CN120356797A

CN120356797A - Key structure and electronic equipment

Info

Publication number: CN120356797A
Application number: CN202410053247.3A
Authority: CN
Inventors: 李辰龙; 张平; 何文涛; 李多; 唐钰柱
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2024-01-12
Filing date: 2024-01-12
Publication date: 2025-07-22

Abstract

The embodiment of the present application discloses a key structure and electronic equipment, and the electronic equipment may include a handheld device, a vehicle-mounted device, a wearable device, a terminal device or any one connected to a wireless modem, a cellular phone, a smart phone, a personal digital assistant, a computer, a tablet computer, a laptop computer, etc. In the embodiment of the present application, the current posture of the key body or the posture change within a specific time period can be known by the proximity sensor, thereby triggering a key function that matches the posture change of the key body, so that the operator only needs to operate the same key body to continuously output a certain instruction without repeatedly pressing the key, and the interaction efficiency is relatively high. In addition, the input of multiple key function instructions is realized through the same key body, and the overall structure of the electronic device is compact, which is conducive to reducing the volume of the electronic device.

Description

Key structure and electronic equipment

Technical Field

The embodiment of the application relates to the technical field of communication equipment, in particular to a key structure and electronic equipment.

Background

Currently, electronic devices typically have more than two keys, such as a volume key, a power key, which are typically mechanical structure type keys, and a user presses a mechanical key to effect input of an instruction. Currently, a key of a mechanical structure type is used for inputting corresponding instructions by touching a pressing key with a contact. When a certain instruction is required to be continuously output, the user is required to repeatedly press keys, and the interaction efficiency is low. Therefore, how to improve the interaction efficiency of the electronic device is a technical problem that those skilled in the art are always concerned with.

Disclosure of Invention

The embodiment of the application provides a key structure with high interaction efficiency and electronic equipment.

In a first aspect, an embodiment of the present application provides a key structure mounted on a housing of an electronic device, the housing having an inner cavity and a key mounting hole, the key structure including:

the key body is limited in the key mounting hole in a sliding mode and is elastically connected with the shell along a first direction, and the key body can deflect relative to the shell, wherein the first direction is parallel to the extending direction of the key mounting hole;

The proximity sensor is positioned in the inner cavity and used for acquiring parameters representing the position change of the key main body relative to the shell so as to trigger corresponding key functions.

According to the embodiment of the application, the gesture of the key main body at the current moment or the gesture change in a specific time period can be known through the acquisition of the gesture parameters of the key main body by the proximity sensor, so that the key function matched with the gesture change of the key main body is triggered, an operator can continuously output a certain instruction only by operating the same key main body, repeated key pressing is not needed, and the interaction efficiency is high. And input of a plurality of key function instructions is realized through the same key main body, so that the whole structure of the electronic equipment is compact, and the volume of the electronic equipment is reduced.

In one example, the device comprises an elastic piece positioned in the inner cavity, the elastic piece comprises a connecting body and a free body which are connected, the connecting body is used for being connected with the shell,

When the key main body moves relative to the shell under the action of external force, the key main body drives the free body to rotate relative to the connecting body;

The proximity sensor detects the attitude parameter of the free body to further obtain the parameter of the position change of the key main body relative to the shell. In the embodiment of the application, when the key main body moves relative to the shell, the key main body drives the elastic piece to deform at the same time, namely, the position change of the key main body relative to the shell can be converted into the shape change of the elastic piece, and the proximity sensor can know the posture change of the key main body by detecting the shape change of the elastic piece, so that the corresponding key function is triggered. The deformation of the elastic piece is detected relatively conveniently, a large signal quantity can be obtained, and the detection reliability is improved.

In one example, the elastic member extends along the length direction of the key body, the elastic member and the key body are arranged along the first direction, and the key body and the free body have at least two abutting points arranged at intervals along the length direction of the key body. The number of the abutting points can be two or more, and the more the abutting points are, the larger the contact area between the key main body and the elastic piece is, the higher the deformation relative sensitivity of the elastic piece is.

In one example, along the length direction of the key body, at least two guide posts are arranged on the surface of the key body facing the free body at intervals, each guide post extends along the first direction, the key body abuts against the free body through each guide post, and the abutting point is the abutting position of the guide post and the free body. The length of the guide pillar protruding out of the key main body can be determined according to the installation position of the elastic piece in the inner cavity, the key main body is reliably abutted against the elastic piece through the guide pillar, the installation of the elastic piece is convenient, and the volume of the inner cavity occupied by the guide pillar is relatively small.

In an example, the elastic member includes two connectors, namely a first connector and a second connector, respectively, the first connector and the second connector are located at two ends of the elastic member along the length of the elastic member, the free body is located between the first connector and the second connector, and the free body can deform relative to the first connector and the second connector, and can be in a spring plate structure. In this embodiment, the two ends of the elastic member are connected with the housing through the first connector and the second connector, and the connection reliability is relatively high.

Or the connector sets up in the middle part of elastic component, and the both sides of connecting portion all are connected with the free body, and the deformation flexibility ratio of the elastic component of this structure is higher.

In one example, when the key body is in the initial state, the key body is elastically abutted against the elastic member. Therefore, the elastic piece can cooperate with the proximity sensor to detect the gesture of the key main body, and also has the function of keeping the key main body at the initial position, so that the key structure is more compact, the space occupation is small, and the whole structural arrangement of the electronic equipment is facilitated.

In one example, the proximity sensor is mounted to a surface of a flexible circuit board, an interior cavity of the housing is provided with a support, and the flexible circuit board is partially supported by the support. In the example, the proximity sensor is directly arranged on the flexible circuit board, and is electrically connected with the processor on the main board through the signal wire arranged in the flexible circuit board, so that the structure is simple, and the occupation of the inner cavity space of the electronic equipment is reduced.

In one example, the proximity sensor is fixed in the inner cavity of the shell, the elastic piece is provided with a detection surface, and the proximity sensor obtains parameters of the position change of the key main body relative to the shell according to the gesture parameters of the detection surface. The proximity sensor obtains the parameter of the change of the position of the key main body relative to the shell through detecting the distance signal between the position of the proximity sensor and the detection surface, so that the change of the position of the key main body can be known through detecting the change of the distance between the proximity sensor and the detection surface, and the force of the key main body pressed down can be known according to the elastic modulus of the free body. The embodiment of the application processes the detection surface on the elastic piece, and the processing technology is relatively simple.

In one example, the proximity sensor is fixedly mounted on the free body, the housing and the key body are provided with detection surfaces, and the proximity sensor obtains parameters of the key body relative to the position change of the housing by detecting a distance signal between the position of the proximity sensor and the detection surfaces. The proximity sensor is arranged on the free body, the detection surface can also be directly arranged on the shell or the key main body, the occupation of the key structure in the S1 direction can be reduced to a certain extent, the inner cavity space is saved, and the arrangement of other electronic devices is facilitated.

In one example, the housing is provided with a detection member, and the detection surface is located on a surface of the detection member facing the proximity sensor. In the embodiment of the application, the detection piece is independently arranged, and the detection surface is arranged on the detection piece, so that the processing difficulty of the detection surface can be reduced.

In an example, the detecting member is located between the key main body and the elastic member, the key main body is provided with a guide pillar, and the guide pillar passes through the detecting member to be in abutting contact with the free body of the elastic member, so that the key structure is beneficial to compact structure.

In an example, the touch screen further comprises a first limiting piece connected between the guide post and the detecting piece, when the key main body moves towards the direction of the elastic piece, the detecting piece moves along with the guide post under the action of the first limiting piece, and the installation position of the free body where the same proximity sensor is located is opposite to the rotation direction of the detecting surface corresponding to the proximity sensor. In the embodiment of the application, the free body and the opposite detection surface are splayed in an splayed structure, and the rotation directions are opposite. In this embodiment, the distance signal amounts detected by the first proximity sensor and the second proximity sensor become larger than the position of the detection surface, and a small amount of position change of the key main body1 can be detected, which is advantageous in improving the detection sensitivity.

In an example, the device further comprises a second limiting piece, wherein the second limiting piece is connected to the inner cavity of the shell and is located on one side, far away from the key main body, of the elastic piece, and the second limiting piece limits the maximum displacement of the free body moving in the direction far away from the key main body, so that the deformation of the elastic piece is excessive and the elastic piece fails.

In one example, the second limiting member is a limiting stop, and the abutting points of the key main body and the elastic member are arranged in one-to-one correspondence with the limiting stop. Therefore, the displacement of the guide post moving in the direction away from the detection surface can be well limited, the elastic piece is protected, and the use reliability of the equipment is improved.

In one example, the number of proximity sensors is two, the proximity sensors being symmetrically arranged about a central transverse plane of the elastic member. In this embodiment, by providing as few proximity sensors as possible, as many key functions as possible are realized with one key main body.

In one example, the two proximity sensors each include an emitter and a receiver, the emitters of the two proximity sensors being symmetrically disposed about a central transverse plane of the elastic member, the receivers of the two proximity sensors also being symmetrically disposed about the central transverse plane of the elastic member. Thus the overall signal variation is 2δ, and the layout will achieve a higher signal-to-noise ratio.

In one example, each proximity sensor includes a first sub-proximity sensor and a second sub-proximity sensor, the first sub-proximity sensor and the second sub-proximity sensor being arranged along a key body length direction, and the transmitter of the first sub-proximity sensor and the transmitter of the second sub-proximity sensor being located between the receiver of the first sub-proximity sensor and the receiver of the second sub-proximity sensor. The two proximity sensors in this embodiment are arranged in a manner that is more advantageous for obtaining a larger signal variation.

In one example, each of the proximity sensors includes a first sub-proximity sensor and a second sub-proximity sensor arranged side by side in a width direction of the elastic member, and the transmitter and the receiver of the first sub-proximity sensor are arranged in a length direction of the elastic member, the transmitter and the receiver of the second sub-proximity sensor are arranged in the length direction of the elastic member, the transmitter of the first sub-proximity sensor and the transmitter of the second sub-proximity sensor, and the receiver of the first sub-proximity sensor and the receiver of the second sub-proximity sensor are arranged symmetrically about the same point center. Thus, the signal variation can be further improved, and a higher signal-to-noise ratio can be obtained.

In one example, each proximity sensor includes an emitter and two receivers, the three are arranged along the length direction of the elastic member, and the two receivers are symmetrically arranged about the principal axis of the outgoing light of the emitter. In this embodiment, the emitter is located between two receivers, and can provide infrared rays for the two receivers, so that one emitter can be saved, and a change in the signal quantity equivalent to the proximity sensor of the two emitters and the two receivers can be obtained.

In a second aspect, an embodiment of the present application further provides an electronic device, including a housing and a key structure of any one of the foregoing embodiments.

In one example, the housing includes a middle frame, and a key through hole is provided on a side wall of the middle frame.

In one example, further comprising:

The storage module is used for storing key function instructions corresponding to the gestures of the key main body one by one;

And the processor is used for receiving the parameters detected by the proximity sensor and judging the current key gesture according to the received parameters so as to trigger a key function instruction corresponding to the key main gesture.

In one example, a first type of key function instruction and a second type of key function instruction are stored in the storage module, the first type of key function instruction includes N static key function instructions corresponding to the gestures of a single key body one by one, and the second type of key function instruction includes M dynamic key function instructions corresponding to dynamic gestures formed by two or more key body gestures within a predetermined time period one by one, where N and M are integers greater than or equal to 1.

The electronic equipment provided by the embodiment of the application comprises the key structure, so that the technical effect of the key structure is achieved.

Drawings

Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a portion of the electronic device B shown in FIG. 1;

FIG. 3 is an exploded view of the structure shown in FIG. 2;

Fig. 4 shows the key body 1 in an initial state, i.e., a state in which it is not pressed;

fig. 5 is a schematic diagram of the posture of the key body when the pressing force P is at the middle position of the key body;

Fig. 6 is a schematic diagram of the posture of the key body when the pressing force P approaches the first end;

fig. 7 is a schematic diagram of the posture of the key body when the pressing force P approaches the second end portion;

FIG. 8 is a schematic top view of the structure of FIG. 2;

FIG. 9 is a schematic front view of the structure shown in FIG. 2;

FIG. 10 is a schematic cross-sectional view of A-A of FIG. 9, wherein the key body is in a pressed state, and m is the central lateral plane of the key body and the elastic member;

FIG. 11 is a schematic view of the key body in a non-depressed state in the structure shown in FIG. 2;

fig. 12 is a schematic structural diagram of a portion of an electronic device at B according to another embodiment of the present application;

FIG. 13 is an exploded view of the structure of FIG. 12;

FIG. 14 is a cross-sectional view of the structure of FIG. 12, in the same position as A-A of FIG. 9, with the key body in a non-depressed state;

FIG. 15 is a schematic view of the key body in a pressed state in the structure shown in FIG. 14;

FIG. 16 is a cross-sectional view showing a part of the structure of an electronic device B in accordance with still another embodiment of the present application, the cross-sectional position being the same as A-A in FIG. 9, wherein the key main body is in a non-depressed state;

FIG. 17 is an exploded view of the structure of FIG. 16;

FIG. 18 is a schematic view of the key body in a pressed state in the structure shown in FIG. 16;

FIG. 19 is a schematic view of the structure of FIG. 16 showing only the key structure;

FIG. 20 is a schematic diagram of the simulation of the signal quantity when the detection surface rotates clockwise in the embodiment of the application;

FIG. 21 is a schematic diagram of the simulation of the signal quantity when the detection surface rotates clockwise in the embodiment of the application;

FIG. 22 is a schematic diagram illustrating a continuous pressing of a key body within a predetermined time period according to an embodiment of the present application;

FIG. 23 is a schematic diagram showing a specific arrangement of proximity sensors in a key structure according to an embodiment of the present application;

FIG. 24 is a schematic diagram showing another embodiment of a proximity sensor in a key structure according to an embodiment of the present application;

FIG. 25 is a schematic diagram showing another embodiment of a proximity sensor in a key structure according to an embodiment of the present application;

FIG. 26 is a schematic diagram of another embodiment of a proximity sensor in a key structure according to an embodiment of the present application;

FIG. 27 is a block diagram of electrical connections of a proximity sensor, a processor, and a memory module in an electronic device in accordance with an embodiment of the present application.

Wherein the one-to-one correspondence between reference numerals and component names in fig. 1 to 26 is as follows:

100 electronic equipment, 110 a shell, 111 a side wall, 112 a middle plate, 1121 a fixed position, 113 an inner cavity, 114 a support, 115 a first limiting piece and 120 a display screen;

130 key structure, 1 key main body, 11 pressing part, 12 guide post, 121 free end, 13 hook, 14 first limit part, 1-1 first end, 1-2 second end, 2 proximity sensor, 3 elastic part, 30 connector, 31 first connector, 32 second connector, 33 free body, 331 first surface, 332 second surface, 4FPT, 5 hinge shaft, 6 detection part, 61 side surface, 611 first detection surface, 612 second detection surface, 62 avoidance hole, 63 fixing seat, 64 rotation shaft.

Detailed Description

In order to enable those skilled in the art to better understand the technical solutions of the embodiments of the present application, the embodiments of the present application are described in further detail below with reference to the accompanying drawings and specific embodiments.

Embodiments of the present application relate to an electronic device, which may include a handheld device, a vehicle-mounted device, a wearable device, a terminal device, or other processing device connected to a wireless modem, and may also include a cellular phone (cellular phone), a smart phone (smart phone), a Personal Digital Assistant (PDA) computer, a tablet computer, a laptop computer, a video camera, a video recorder, a camera, a smart watch (SMART WATCH), a smart band (smart wristband), an augmented reality (augmented reality, AR) device, a Virtual Reality (VR) device, a vehicle-mounted computer, and other electronic devices.

The technical scheme and the technical effects are further introduced for the mobile phone as an example in the electronic equipment provided by the embodiment of the application, and the mobile phone can be a tablet mobile phone or a folding mobile phone. Of course, those skilled in the art will understand that the technical solution of the embodiment of the present application may be applied to a mobile phone, and may also be applied to electronic devices other than a mobile phone, such as a notebook, etc.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the application.

Referring to fig. 1, an electronic device in an embodiment of the present application includes a housing, a display screen, and a key structure, where for a mobile phone, the housing includes a middle frame and a battery cover (not shown), a cavity is formed between the middle frame and the battery cover, and electronic devices (not shown) such as a main board, a processor, an internal memory, a charging management module, a power management module, and a battery of the electronic device may be installed in the cavity, and the display screen is disposed on one side of the middle frame. The housing mainly plays a role in supporting and protecting the electronic devices.

In the embodiment of the application, the shell can be a metal piece or a non-metal piece, such as a plastic piece, and of course, the shell can also comprise a metal body and a plastic body, wherein the plastic body is formed through an injection molding process, the metal body can be formed through a stamping process, and the plastic body and the metal body are combined into a whole in the injection molding process.

The display screen includes a display module (not shown) and a transparent cover plate, the display module is used for displaying images, videos, and the like, and the display module may employ an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode (AMOLED) or an active-matrix organic LIGHT EMITTING diode, a flexible light-emitting diode (FLED), a quantum dot LIGHT EMITTING diodes (QLED), an electrophoretic display technology (electrophoretic, E-Ink), and the like. The transparent cover plate covers the outer side of the display module and plays a role in protecting the display module. The transparent cover plate can be a glass cover plate, and can be any other transparent material capable of playing a protection function, for example, the transparent cover plate can be transparent polyimide. The display screen can also have the function of touch control, namely the display screen can be a touch control screen.

For mobile phones, the main board may be a PCB (english Printed Circuit Board, chinese printed circuit board) which is composed of an insulating base board, connecting wires and pads for assembling and soldering electronic components, and has the dual functions of a conductive line and an insulating base board. The main board can be a single-sided board, and can be a double-sided board or a multi-layer board. It can replace complex wiring, can realize wiring and electrical connection or electrical insulation between various electronic components, and provides required electrical characteristics. The electronic devices inside the electronic apparatus may be directly mounted on the motherboard, or electrically connected to the motherboard through coaxial cables, or flexible circuit boards (Flexible Printed Circuit, FPC).

Referring to fig. 2, fig. 2 is a schematic diagram of a portion of the electronic device B shown in fig. 1.

The embodiment of the present application provides a key structure 130, as shown in fig. 1 and 2, where the key structure 130 is mounted on a housing of an electronic device, specifically, the housing has a side wall 111 and a middle plate 112 that are connected, the side wall 111 and the middle plate 112 only show part of structures, which can enclose an inner cavity 113, and an electronic device of the electronic device can be mounted on the inner cavity 113. As shown in fig. 1 and 2, the side wall 111 of the housing is provided with key mounting holes 110a (refer to the drawings), and the key mounting holes 110a penetrate the side wall 111 of the housing and can communicate with the inner cavity 113. Of course, the key mounting holes 110a are not limited to the case side wall 111 shown in fig. 1 and 2 depending on the product and the arrangement position of the key structure 130.

Referring to fig. 2, a key structure 130 in an embodiment of the present application includes a key body 1, a proximity sensor (Proximity Sensor, PS) and an elastic member. The key main body 1 includes a pressing portion 11, and the pressing portion 11 is normally located outside the key mounting hole 110a, so that the operation of a user is facilitated. The shape of the pressing portion 11 can be appropriately set according to the shape of the product. The key body 1 in the embodiment of the present application is limited to the key mounting hole 110a in a sliding manner, which means that the key body 1 can slide reciprocally along the first direction S1 relative to the key mounting hole 110a, and the key body 1 can not be separated from the key mounting hole 110a by a limiting structure. The limiting structure may be a hook 13 disposed on the key body 1, where the hook 13 may be located at two sides of the key body 1 along the S2 direction, and the hook 13 and the middle frame cooperate to inhibit the key body 1 from coming out of the key mounting hole 110a, please refer to fig. 3.

In the embodiment of the present application, for simplicity of description of the technical solution, the extending direction of the key mounting hole is defined as a first direction S1, and the length direction of the key main body 1 is defined as a second direction S2. In the embodiment of the application, the key body 1 is elastically connected with the housing along the first direction S1, so that the key body 1 can return to the initial state under the elastic acting force, and the initial state refers to a state that the key body 1 is not pressed. And the key main body 1 in the embodiment of the present application can deflect inside the key mounting hole 110a with respect to the housing 110, wherein the key main body 1 can deflect with respect to the elastic abutment point with the housing 110, i.e., the key main body 1 in the embodiment of the present application can not only reciprocate in the S1 direction with respect to the key mounting hole (please refer to fig. 11), but also deflect around the abutment point of the key main body 1 and the housing 110. The number of the contact points between the key body 1 and the case 110 may be one, or two or more. The key body 1 can be deflected around one abutment point, but can also be deflected around each abutment point. For the key main body 1 of an elongated shape shown in fig. 2, both end portions of the key main body 1 in the second direction can be deflected around the abutment point. About which abutment point the key body 1 deflects, which depends on the pressing position the user acts on the key body 1.

When the key body 1 is of another shape, for example, the key body 1 is circular or another shape, the position of the key body 1 deflected around the abutment point is not limited to two end points in one direction, and the end points in the other direction of the key body 1 which are angled with respect to the second direction S2 may also be deflected around the abutment point.

In the embodiment of the present application, the proximity sensor is located in the inner cavity of the housing 110, and the proximity sensor 2 may be an infrared reflection type, a capacitance type, an ultrasonic ranging type, etc., and the technical scheme and the technical effect are continuously described mainly in the infrared reflection type. The infrared reflection type proximity sensor can be called as a proximity light sensor, and the working principle of the infrared reflection type proximity sensor is that an infrared light source, such as an infrared LED, emits infrared light, an infrared laser (such as a vertical cavity surface emitting laser) simultaneously receives infrared light reflected by a proximity object by an infrared light receiver, integrates the intensity of the reflected infrared light, and senses the proximity distance of the external object according to the magnitude of the integrated value.

The proximity sensor 2 in the application is used for acquiring parameters representing the position change of the key main body 1 relative to the shell 110, the proximity sensor 2 transmits the acquired parameter information to the main board, the processor on the main board stores key functions corresponding to the gestures of the key main body 1 one by one, and the main board can judge the gesture of the current key main body 1 according to the parameters detected by the proximity sensor 2, so as to trigger the key functions corresponding to the gesture of the current key main body 1. The user is different to the position of pressing of button main part 1, presses the dynamics different, and the gesture of button main part 1 is different, of course, the processor still can further combine the change of button main part 1 gesture to carry out comprehensive judgement key function in the predetermined time quantum. The processor further comprehensively judges key functions which should be triggered at the current moment by referring to the pressing time and the posture change factors of the key main body 1 in a preset time period.

Fig. 4 to 7 show a one-to-one correspondence between the postures of several key bodies 1 and their corresponding key functions, in fig. 4, the key bodies 1 are in an initial state, i.e. a state when not pressed, fig. 5 is a schematic posture of the key bodies 1 when the pressing force P is in the middle position of the key bodies 1, fig. 6 is a schematic posture of the key bodies 1 when the pressing force P is near the first end 1-1, and fig. 7 is a schematic posture of the key bodies 1 when the pressing force P is near the second end 1-2. Referring to fig. 4, the middle position of the key body 1 is pressed, the key body 1 does not deflect relative to the housing, and slides inwards only along the S1 direction, so that the first key function is triggered, referring to fig. 5, the first end 1-1 of the key body 1 is pressed, the first end 1-1 deflects towards the inner cavity, so that the second key function is triggered, referring to fig. 6, the second end 1-2 of the key body 1 is pressed, the second end 1-2 deflects towards the inner cavity, so that the third key function is triggered, and if the pressing force slides gradually from the first end to the second end within a preset time, the fourth key function is triggered. The output instructions corresponding to the first key function, the second key function, the third key function and the fourth key function are different from each other, and can be, for example, functions of increasing volume, decreasing volume, lighting screen, starting up and the like.

In the embodiment of the present application, fig. 2 and fig. 3 to fig. 7 show an embodiment in which the number of the proximity sensors 2 is two, but of course, the number of the proximity sensors may be one, or may be three or more, and the processor determines the key gesture through the received parameters of all the proximity sensors, so as to trigger the corresponding key function. The number of the proximity sensors and the number of the key functions can be reasonably set according to actual demands of products.

In the embodiment of the application, the gesture of the key main body 1 at the current moment or the gesture change in a specific time period can be known by acquiring the gesture parameters of the key main body 1 through the proximity sensor 2, so that the key function matched with the gesture change of the key main body 1 is triggered, an operator can continuously output a certain instruction only by operating the same key main body 1, repeated key pressing is not needed, and the interaction efficiency is high. And input of a plurality of key function instructions is realized through the same key main body, so that the whole structure of the electronic equipment is compact, and the volume of the electronic equipment is reduced.

The obtaining of the position change parameter of the key structure 130 relative to the housing 110 may be obtained by directly detecting the position change of the key structure 130, or may be indirectly obtained, and the embodiment of the application shows that the obtaining of the position change parameter of the elastic member is obtained by detecting the position change parameter.

Referring to fig. 8 to 11, in the embodiment of the application, the elastic member 3 is located in the inner cavity of the housing 110, the elastic member 3 may extend along the length direction (S2 direction) of the key body 1, and the elastic member 3 and the key body 1 are arranged along the first direction S1. The elastic member 3 includes a connecting body and a free body, the connecting body is used for being connected with the housing 110, and the connecting body and the free body can be fixedly connected, can be hinged through the hinge shaft 5, or can be detachably connected through a buckle and the like. Compared with the fixed connection of the elastic piece 3 and the shell 110, the elastic piece 3 is connected with the shell 110 through the hinge shaft 5, the elastic piece 3 is easier to deform when being acted by the key main body 1, and the detection accuracy of the proximity sensor can be improved. The number of the connectors may be two (refer to fig. 3, 8, 10 and 11), and the connectors are respectively defined as a first connector 31 and a second connector 32, the first connector 31 and the second connector 32 are respectively disposed at two ends of the elastic member 3 in the length direction S2, and the free body 33 is connected between the two first connectors 31 and the second connector 32, so that the connection reliability of the elastic member 3 in the structure is relatively high.

Of course, the number of the connectors may be one, for example, only one end of the elastic member 3is provided with the connector 30, the free body 33 is connected to one side of the connector 30, the elastic member 3is a cantilever beam, or the connector 30 is disposed in the middle of the elastic member 3, and both sides of the connector 30 are connected with the free bodies 33 (see fig. 13 to 15).

The connecting body can be of a block structure, and is convenient to install and fix. The free body 33 may have a sheet-like structure, and the free body 33 has an elastic piece having a certain width in the width direction of the key main body 1 (S3 direction in fig. 3). The free body 33 of the sheet structure is easily deformed, and the response sensitivity of the key structure 130 is improved.

In the above embodiment, when the key main body 1 moves relative to the housing 110, the key main body 1 elastically abuts against the free body 33, and the key main body 1 drives the elastic member 3 to deform at the same time, that is, the position change of the key main body 1 relative to the housing 110 can be converted into the shape change of the elastic member 3, and the proximity sensor can know the posture change of the key main body 1 by detecting the shape change of the elastic member 3, so as to trigger the corresponding key function, detect the deformation of the elastic member relatively more conveniently, and can obtain a larger signal quantity, thereby improving the detection reliability.

In the embodiment of the application, the elastic modulus of the free body 33 is reasonably selected to adjust the feedback force of the free body 33 to the key main body 1.

As can be seen from fig. 10 to 11, the key body 1 has guide posts 12 extending toward the elastic member 3, the free ends 121 of the guide posts 12 elastically abut against the elastic member 3, the number of the guide posts 12 is two as shown in fig. 9, the two guide posts 12 are arranged at intervals along the length direction S2 of the key body 1, and the two guide posts 12 may be symmetrically arranged about the central cross section m of the key body 1. When the key body 1 moves relative to the housing 110 under the action of the external force P, the free end 121 of the guide post 12 applies a force to the free body to push the free body to rotate relative to the connecting body. The number of the guide posts can be one, but can be three or more. The length of the guide pillar 12 protruding out of the key main body 1 can be determined according to the installation position of the elastic piece 3 in the inner cavity, the key main body 1 is reliably abutted against the elastic piece 3 through the guide pillar 12, the installation of the elastic piece is convenient, and the volume of the inner cavity occupied by the guide pillar is relatively small.

The contact point of the guide post 12 with the free body 33 is an abutment point, that is to say the key body 1 and the free body 33 may have one or at least two abutment points arranged at intervals, all of which may be symmetrically arranged with respect to the central cross section m of the key body 1. The key body 1 can also be deflected relative to its abutment with the free body 33 when the pressing force is directed against the central transverse face of the key body.

Referring to fig. 8 and fig. 10 to fig. 11, in the embodiment of the application, the proximity sensor 2 may be directly mounted on the surface of the flexible circuit board 4, the inner cavity of the housing 110 is provided with a support 114, the flexible circuit board 4 is partially supported on the support 114, and the support 114 may be integrally formed with the housing 110, for example, by injection molding. The proximity sensor 2 is directly arranged on the flexible circuit board 4, and is electrically connected with a processor on the main board through a signal wire arranged in the flexible circuit board 4, so that the structure is simple, and the occupation of the inner cavity space of the electronic equipment is reduced. Of course, the proximity sensor 2 may also be electrically connected to the motherboard by a cable. In the embodiment of the application, the support 114 is located at one side of the elastic member 3 away from the key main body 1, and the flexible circuit board 4 is mounted on the support 114, so that the proximity sensor 2 is fixedly mounted in the inner cavity of the housing 110, and the fixing stability of the proximity sensor 2 is relatively high.

In the embodiment of the present application, the elastic member 3 is provided with a detection surface, and as seen in fig. 10 and 11, the detection surface is a first surface 331 of the elastic member 3 facing the side of the proximity sensor, and the detection surface may be a part or all of the first surface 331. Accordingly, the side of the elastic member 3 facing the key body 1 is defined herein as the second surface 332. The detection surface in the embodiment of the application can be specially treated to meet the detection requirement, for example, good reflective materials are attached or the processing precision is improved, so as to obtain better signal-to-noise ratio. The proximity sensor 2 obtains the parameter of the position change of the key main body 1 relative to the shell 110 by detecting the distance signal between the position of the proximity sensor and the detection surface, so that the position change of the key main body 1 can be known by detecting the distance change between the proximity sensor 2 and the detection surface, and the force of the key main body being pressed can be known according to the elastic modulus of the free body. The embodiment of the application processes the detection surface on the elastic piece 3, and the processing technology is relatively simple.

In the embodiment of the present application, the proximity sensor 2 includes the first proximity sensor 21 and the second proximity sensor 22 as an example, and the first proximity sensor 21 and the second proximity sensor 22 are symmetrically arranged with respect to the center cross section m of the key main body 1, so that the deformation of the free body 33 can be accurately calculated, and the calculation method is relatively simple.

Referring to fig. 12 to 15, in the embodiment of the present application, the proximity sensor 2 is fixedly mounted on the free body of the elastic member 3, fig. 13 to 15 show that the middle portion of the elastic member 3 is provided with the connecting body 30, the connecting body 30 is fixedly connected with the housing 110, the connecting body 30 is provided with the free bodies 33 along two sides of the S2, the proximity sensor 2 includes the first proximity sensor 21 and the second proximity sensor 22, which are respectively disposed on the two free bodies 33, specifically, the first proximity sensor 21 and the second proximity sensor 22 may be disposed at the ends of the free bodies 33 away from the connecting body 30. The elastic member 3 may be an elastic sheet. The key main body 1 may have the same structure as that shown in fig. 2.

Referring to fig. 15, in the embodiment of the present application, the housing 110 is positioned with the detecting member 6, the detecting member 6 may be positioned on the housing 110 through the fixing seat 63, the fixing seat 63 may be fixedly connected to the housing 110, or may be hinged or hung on the housing 110 through the shaft body 64. The detection piece 6 is located between the key main body 1 and the proximity sensor 2, the detection piece 6 is provided with a detection surface facing the side surface 61 of the proximity sensor 2, when the key main body 1 is pressed, the detection surface is motionless, the key main body 1 and the free body are propped against to drive the free body to deform, all the proximity sensors 2 installed on the free body 33 move along with the free body, the angle and the distance between the proximity sensor 2 and the detection surface are changed, the deformation of the free body 33 can be obtained, and finally the position change condition of the key main body 1 can be obtained.

In this embodiment, the proximity sensor 2 is mounted on the free body 33, and the detection surface may also be directly disposed on the housing 110 or the key body 1, so that occupation of the key structure 130 in the S1 direction may be reduced to a certain extent, and the inner cavity space is saved, so that arrangement of other electronic devices is facilitated.

In this embodiment, the detecting member 6 may be a plate structure, and is located between the key main body 1 and the flexible circuit board 4, where the guide post 12 on the key main body 1 passes through an avoidance structure on the detecting member 6 and elastically abuts against the free body 33, and the avoidance structure may be an avoidance hole 62, or may be a notch or other structure. In the embodiment of the application, the detection piece 6 is independently arranged, and the detection surface is arranged on the detection piece, so that the processing difficulty of the detection surface can be reduced. The detecting element 6 may be fixed to the housing 110 by means of adhesion or hooking. Of course, the detecting element and the housing 110 may be integrally formed, i.e., the detecting surface may be directly disposed on the housing 110.

Referring to fig. 12 to 15, in order to avoid failure caused by excessive deformation of the elastic member 3, the embodiment of the application further provides a second limiting member 115, where the second limiting member 115 is connected to the inner cavity of the housing 110 and is located at one side of the elastic member 3 away from the key main body 1, the second limiting member 115 limits the maximum displacement of the free body 33 moving along the direction away from the key main body 1, the second limiting member 115 may be a limiting block, and the limiting blocks and the guide posts 12 may be arranged in one-to-one correspondence, so that the displacement of the guide posts 12 moving along the direction away from the detection surface can be better limited, protecting the elastic member 3, and improving the use reliability of the device.

Referring to fig. 16 to 19, unlike fig. 12, the guide post 12 in the embodiment of the present application is further provided with a first limiting member 14, and other structures are substantially the same. The first limiting member 14 is connected between the guide post 12 and the detecting member 6, the first limiting member 14 may be a limiting stop, the limiting stop is mounted on the guide post 12, when the key main body 1 moves towards the direction of the elastic member 3, the detecting member 6 moves along with the guide post 12 under the action of the first limiting member 14, the detecting member 6 can move relative to the housing 110, as shown in fig. 19, the first proximity sensor 21 is mounted on the first free body 331, the second proximity sensor 22 is mounted on the second free body 332, and the connecting body of the elastic member 3 is fixed on the support 114. The detection area of the first proximity sensor 21 is defined as a first detection surface 611, the first detection surface 611 is approximately a left-hand oval inner area in the drawing, the detection area of the second proximity sensor 22 is defined as a second detection surface 612, the second detection surface 612 is approximately a right-hand oval inner area in the drawing, when the key main body 1 is acted by an external force, the first free body 331 will rotate counterclockwise around the support 114, the first detection surface 611 opposite to the first free body 331 will rotate clockwise under the action of the limit stop, the second free body 332 will rotate clockwise around the support 114, and the second detection surface 612 opposite to the second free body 332 will rotate counterclockwise under the action of the limit stop, i.e. the free body and the opposite detection surface thereof are splayed in an eight-shaped structure, and the rotation directions are opposite. In this embodiment, the distance signal amounts detected by the first proximity sensor and the second proximity sensor become larger than the position of the detection surface, and a small amount of position change of the key main body 1 can be detected, which is advantageous in improving the detection sensitivity.

In the embodiment of the present application, the number of the proximity sensors 2 is at least two, and the proximity sensors are arranged along the length direction of the elastic member 3, so that the continuous sliding direction and the pressing force of the key main body can be determined according to the increasing and decreasing change trend of the signal quantity detected by each proximity sensor 2, wherein the sliding direction refers to whether the pressing force slides from the first end portion 1-1 to the second end portion 1-2 or from the second end portion 1-2 to the first end portion 1-1 of the key main body 1. According to the simulation result, when the detection surface rotates clockwise around the connection point with the housing 110 (refer to fig. 20), the signal amount received by the proximity sensor decreases, and the signal change amount is assumed to be- δ, and when the detection surface rotates counterclockwise around the connection point with the housing 110 (refer to fig. 21), the signal amount received by the proximity sensor 2 increases, and the relationship between the inclination angle of the elastic member 3 and the received light power (signal amount) is set to be +δ, and refer to the following table 1.

TABLE 1

Working conditions of	Emitted light power/W	Received optical power/W	Relative difference/W
				Initial state	1	1.54158E-05	/
Clockwise rotation by 0.5 °	1	1.53478E-05	-6.79738E-08
				Clockwise by 1 °	1	1.53180E-05	-9.77614E-08
Clockwise by 2 °	1	1.52529E-05	-1.62866E-07
				Rotate clockwise by 3.5 DEG	1	1.50440E-05	-3.71833E-07
Clockwise rotation by 5 °	1	1.48718E-05	-5.44037E-07
				Counterclockwise rotation by-0.5 °	1	1.55043E-05	8.85164E-08
Counterclockwise rotation by-1 °	1	1.55244E-05	1.08596E-07
				Counterclockwise rotation by-2 °	1	1.55902E-05	1.74439E-07
Counterclockwise rotation by-3.5 °	1	1.57568E-05	3.40982E-07
				Counterclockwise rotation by-5 °	1	1.59122E-05	4.96354E-07

Referring to fig. 22, an example is given in which the proximity sensor includes a first proximity sensor 21 and a second proximity sensor 22, and the pressing force slides from the first end 1-1 to the second end 1-2 of the key body, and in the sliding process of the pressing force, the sliding direction of the key body 1 can be known by the change of the signal amounts detected by the first proximity sensor 21 and the second proximity sensor 22, so as to trigger the key function corresponding to the sliding direction of the key body 1. In this embodiment, by providing as few proximity sensors as possible, as many key functions as possible are realized with one key main body.

In the embodiment of the application, when the key body is in the initial state, the key body 1 is elastically abutted against the elastic member 3. Therefore, the elastic piece can cooperate with the proximity sensor to detect the gesture of the key main body 1, and also has the function of keeping the key main body 1 at the initial position, so that the key structure 130 is more compact, the space occupation is small, and the whole structural arrangement of the electronic equipment is facilitated.

Referring to fig. 23, in the embodiment of the present application, the first proximity sensor 21 and the second proximity sensor 22 may be symmetrically arranged about a central lateral plane m of the elastic member 3, wherein the central lateral plane of the elastic member 3 and the central lateral plane of the key main body are coplanar. For a proximity sensor, the proximity sensor comprises at least one emitter 2a for emitting detected infrared light or ultrasonic waves and at least one receiver 2b for sensing infrared light or ultrasonic waves reflected by the detected surface, the receiver 2b may be a diode which converts the received light into an electrical signal and transmits it to a processor. The first proximity sensor 21 and the second proximity sensor 22 are symmetrically arranged, and correspondingly the emitter 2a of the first proximity sensor and the emitter 2a of the second proximity sensor are symmetrically arranged about the central transverse plane of the elastic member 3, and the receiver 2b of the second proximity sensor 22 and the receiver 2b of the second proximity sensor are symmetrically arranged about the central transverse plane of the elastic member 3. Thus the overall signal variation is 2δ, and the layout will achieve a higher signal-to-noise ratio.

Referring to fig. 23 again, in the embodiment of the present application, the emitter 2a is disposed at the relatively close end of the first proximity sensor 21 and the second proximity sensor 22, and the receiver 2b of the first proximity sensor 21 and the receiver 2b of the second proximity sensor 22 are disposed at the relatively far end of the first proximity sensor 21 and the second proximity sensor 22, respectively, so that the two proximity sensors are disposed in a manner more favorable for obtaining a larger signal variation.

Referring to fig. 24, in the embodiment of the present application, the proximity sensor at each detection position includes a first sub-proximity sensor 211 and a second sub-proximity sensor 212, the first sub-proximity sensor 211 and the second sub-proximity sensor 212 are arranged along the length direction of the key body 1, and the transmitter 2a of the first sub-proximity sensor 211 and the transmitter 2a of the second sub-proximity sensor 212 are located between the receiver 2b of the first sub-proximity sensor 211 and the receiver 2b of the second sub-proximity sensor 212, so that the signal variation can be further improved, and a higher signal-to-noise ratio can be obtained.

The proximity sensor at each detection position in the key structure 130 may be further set as follows according to the simulation result in the above table, further increasing the signal variation. Referring to fig. 25, each of the proximity sensors includes a first sub-proximity sensor 211 and a second sub-proximity sensor 212, the first sub-proximity sensor 211 and the second sub-proximity sensor 212 are arranged side by side along a width direction (S3) of the elastic member 3, and the transmitter 2a and the receiver 2b of the first sub-proximity sensor 211 are arranged along a length direction of the elastic member 3, the transmitter 2a and the receiver 2b of the second sub-proximity sensor 212 are arranged along the length direction of the elastic member 3, and the transmitter 2a of the first sub-proximity sensor 212, and the receiver 2b of the first sub-proximity sensor 211 and the receiver 2b of the second sub-proximity sensor 212 are arranged symmetrically about the same point center. Thus, the signal variation can be further improved, and a higher signal-to-noise ratio can be obtained.

Referring to fig. 26, in the embodiment of the present application, each proximity sensor (the first proximity sensor 21 and the second proximity sensor 22) includes one emitter 2a and two receivers 2b, the three are arranged along the length direction of the elastic member 3, and the two receivers 2b are symmetrically arranged about the principal axis of the outgoing light of the emitter 2a, in which the emitter 2a is located between the two receivers 2b, so that infrared rays can be provided to the two receivers 2b, one emitter 2a can be saved, and a signal quantity variation equivalent to the proximity sensors of the two emitters 2a and the two receivers 2b can be obtained.

Of course, more arrangement modes of the proximity sensors can be set according to simulation results.

The electronic device provided by the embodiment of the application comprises the key structure 130, so the electronic device also has the technical effects of the key structure 130.

In the embodiment of the application, the electronic equipment further comprises a storage module and a processor, wherein the storage module stores key function instructions corresponding to the gestures of the key main body 1 one by one, and the processor is used for receiving parameters detected by the proximity sensor and judging the current key gesture according to the received parameters so as to trigger the key function instructions corresponding to the gestures of the key main body 1. The proximity sensors may include N, namely, a first proximity sensor to an Nth proximity sensor, and the key functions may include M, namely, a first key function to an Mth key function, wherein N and M are integers greater than or equal to 1.

In the embodiment of the application, a first type key function instruction and a second type key function instruction are stored in a storage module, wherein the first type key function instruction comprises N static key function instructions which are in one-to-one correspondence with the gestures of a single key main body 1, and the second type key function instruction comprises M dynamic key function instructions which are in one-to-one correspondence with dynamic gestures formed by two or more than two key main bodies 1 in a preset time period, wherein N and M are integers which are larger than or equal to 1. Such a key body can integrate as many key functions as possible.

For other structures of electronic devices please refer to the current art.

In embodiments of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

References to orientation terms, such as "inner", "outer", etc., in the embodiments of the present application are only with reference to the orientation of the drawings, and thus, the use of orientation terms is intended to better and more clearly describe and understand the embodiments of the present application, rather than to indicate or imply that the apparatus or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the embodiments of the present application.

In the description of embodiments of the present application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

In the embodiment of the application, "and/or" is merely an association relationship describing the association object, and indicates that three relationships may exist, for example, a and/or B may indicate that a exists alone, and a and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

The foregoing is merely a preferred embodiment of the present application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present application, which are intended to be comprehended within the scope of the present application.

Claims

1. A key structure installed in a housing of an electronic device, wherein the housing has an inner cavity and a key installation hole, wherein the key structure comprises:

A key body, the sliding limit is located in the key installation hole and the key body is elastically connected to the shell along a first direction, and the key body can deflect relative to the shell, wherein the first direction is parallel to the extension direction of the key installation hole;

A proximity sensor is located in the inner cavity, and is used to obtain a parameter representing a position change of the key body relative to the shell to trigger a corresponding key function.

2. The key structure according to claim 1, characterized in that it comprises an elastic member located in the inner cavity, the elastic member comprises a connected connecting body and a free body, the connecting body is used to connect with the housing,

When the key body moves relative to the housing under the action of an external force, the key body drives the free body to rotate relative to the connecting body; the key body deflects relative to the abutment point between the key body and the free body;

The proximity sensor detects the posture parameters of the free body and thereby obtains the parameters of the position change of the button body relative to the shell.

3. The key structure according to claim 2 is characterized in that the elastic member extends along the length direction of the key body, and the elastic member and the key body are arranged along the first direction; along the length direction of the key body, the key body and the free body have at least two abutment points arranged at intervals.

4. The key structure according to claim 3 is characterized in that, along the length direction of the key body, the surface of the key body facing the free body has at least two guide pillars arranged at intervals, each of the guide pillars extends along the first direction, and the key body abuts against the free body through each of the guide pillars, and the abutment point is the abutment position between the guide pillar and the free body.

5. The key structure according to claim 3, characterized in that the elastic member comprises two connectors, namely a first connector and a second connector, the first connector and the second connector are respectively located at two ends of the elastic member along its length, and the free body is located between the first connector and the second connector;

Alternatively, the connecting body is arranged in the middle of the elastic member, and both sides of the connecting portion are connected to the free body.

6. The key structure according to claim 2, characterized in that when the key body is in an initial state, the key body elastically abuts against the elastic member.

7. The button structure according to any one of claims 1 to 6, characterized in that the proximity sensor is mounted on the surface of the flexible circuit board, the inner cavity of the shell is provided with a support, and the flexible circuit board is partially supported by the support.

8. The button structure according to any one of claims 2 to 7 is characterized in that the proximity sensor is fixed to the inner cavity of the shell, a detection surface is provided on the elastic member, and the proximity sensor obtains parameters of the position change of the button body relative to the shell based on posture parameters detected by the detection surface.

9. The button structure according to any one of claims 2 to 7 is characterized in that the proximity sensor is fixedly mounted on the free body, the shell and the button body are provided with detection surfaces, and the proximity sensor obtains parameters of the position change of the button body relative to the shell by detecting a distance signal between its position and the detection surface.

10 . The key structure according to claim 9 , wherein a detection member is provided on the housing, and the detection surface is located on a surface of the detection member facing the proximity sensor.

11. The key structure according to claim 10, characterized in that the detection member is located between the key body and the elastic member, the key body has a guide column, and the guide column passes through the detection member and abuts against the free body of the elastic member.

12. The button structure according to claim 11 is characterized in that it also includes a first limit member connected between the guide column and the detection member. When the button body moves toward the direction of the elastic member, under the action of the first limit member, the detection member moves with the guide column, and the free body installation position of the same proximity sensor is opposite to the rotation direction of the detection surface corresponding to the proximity sensor.

13. The button structure according to any one of claims 9 to 12 is characterized in that it also includes a second limiter, which is connected to the inner cavity of the shell and is located on the side of the elastic member away from the button body, and the second limiter limits the maximum displacement of the free body moving in a direction away from the button body.

14. The key structure according to claim 13, characterized in that the second limiting member is a limiting block, and the abutment points of the key body and the elastic member are arranged in one-to-one correspondence with the limiting block.

15 . The key structure according to claim 1 , wherein there are two proximity sensors, and the two proximity sensors are symmetrically arranged with respect to a central lateral plane of the elastic member.

16. The button structure according to claim 15 is characterized in that the two proximity sensors each include a transmitter and a receiver, the transmitters of the two proximity sensors are symmetrically arranged with respect to the central lateral plane of the elastic member, and the receivers of the two proximity sensors are also symmetrically arranged with respect to the central lateral plane of the elastic member.

17. The button structure according to claim 15 or 16 is characterized in that each of the proximity sensors includes a first sub-proximity sensor and a second sub-proximity sensor, the first sub-proximity sensor and the second sub-proximity sensor are arranged along the length direction of the button body, and the transmitter of the first sub-proximity sensor and the transmitter of the second sub-proximity sensor are located between the receiver of the first sub-proximity sensor and the receiver of the second sub-proximity sensor.

18. The button structure according to claim 15 or 16 is characterized in that each of the proximity sensors includes a first sub-proximity sensor and a second sub-proximity sensor, the first sub-proximity sensor and the second sub-proximity sensor are arranged side by side along the width direction of the elastic member, and the transmitter and the receiver of the first sub-proximity sensor are arranged along the length direction of the elastic member, the transmitter and the receiver of the second sub-proximity sensor are arranged along the length direction of the elastic member, and the transmitter of the first sub-proximity sensor and the transmitter of the second sub-proximity sensor, as well as the receiver of the first sub-proximity sensor and the receiver of the second sub-proximity sensor are symmetrically arranged about the same point.

19. The key structure according to claim 15 or 16 is characterized in that each of the proximity sensors comprises a transmitter and two receivers, which are arranged along the length direction of the elastic member, and the two receivers are symmetrically arranged about the main axis of the outgoing light of the transmitter.

20. An electronic device, comprising a housing and the key structure according to any one of claims 1 to 19.

21 . The electronic device according to claim 20 , wherein the housing comprises a middle frame, and the button through hole is disposed on a side wall of the middle frame.

22. The electronic device according to claim 20, further comprising:

A storage module storing key function instructions corresponding to the key body postures one by one;

The processor is used to receive the parameters detected by the proximity sensor and determine the current key posture according to the received parameters to trigger a key function instruction corresponding to the key body posture.

23. The electronic device according to claim 22 is characterized in that the storage module stores first-category key function instructions and second-category key function instructions, the first-category key function instructions include N static key function instructions corresponding one-to-one to the postures of a single key body, and the second-category key function instructions include M dynamic key function instructions corresponding one-to-one to the dynamic postures formed by two or more key body postures within a predetermined time period, wherein N and M are integers greater than or equal to 1.