CN109981830B - Centrifugal motor, electronic device and method for adjusting angle of electronic device - Google Patents

Abstract

The application discloses a centrifugal motor, comprising: a casing on which a support member is arranged; a rotating shaft, which is rotatably connected to the casing, and a fixed sleeve is arranged on the rotating shaft; a rotating block is accommodated in the fixed sleeve, and inside the rotating block A cavity is opened, and magnetic particles are arranged at the bottom of the cavity; a magnetic coil is fixed on the support and located on the periphery of the fixed sleeve, a metal strip is arranged in the magnetic coil, and a driving mechanism is connected with the rotating shaft to make the rotating shaft rotate. In the above structure, the rotation of the rotating shaft drives the fixed sleeve and the rotating block to rotate, and the magnetic coil is periodically energized for part of the time to make the metal strip attract the magnetic particles to the top of the cavity, so that the center of gravity of the rotating block deviates from the axis line of the rotating shaft, thereby generating Centrifugal force, the electronic device using the centrifugal motor can use centrifugal force to adjust the angle of the electronic device when it falls, so as to avoid the fragile parts from hitting the ground. The present application also provides an electronic device and a method for adjusting the angle of the electronic device during a falling process of the electronic device.

Description

Centrifugal motor, electronic device and method for adjusting angle of electronic device

technical field

The present application relates to the field of structural design, and in particular, to a centrifugal motor, an electronic device and a method for adjusting the angle of the electronic device.

Background technique

With the development of smart phone technology, smart phones are becoming more and more popular. With the development of technology, the screen of smart phones is getting bigger and bigger. Once the smart phone is dropped, the screen will be cracked or even broken. When the smartphone is cracked or even broken, it will seriously affect the use of the user, and the replacement of the display screen is also very expensive. At present, there is no good solution that can better protect the screen of the smartphone when the smartphone is dropped.

SUMMARY OF THE INVENTION

The present application provides a centrifugal motor, an electronic device and a method for adjusting the angle of the electronic device during the falling process of the electronic device, which can reduce the probability of screen breakage of the electronic device during the falling process.

A technical solution adopted in this application is to provide a centrifugal motor, including:

a casing, a support member is arranged on the casing;

a rotating shaft, which is rotatably connected with the casing, and a fixing sleeve is arranged on the rotating shaft;

The rotating block is accommodated in the fixed sleeve, and an accommodating groove is set in the rotating block, and the bottom of the accommodating groove is provided with magnetic particles;

a magnetic coil, fixed on the support and located on the periphery of the fixing sleeve, a metal strip is arranged in the magnetic coil, and

a driving mechanism, connected with the rotating shaft to rotate the rotating shaft;

Wherein, the rotation of the rotating shaft drives the fixed sleeve and the rotating block to rotate, the magnetic coil is energized for part of a cycle, and de-energized for part of the time; The magnetic particles are attracted towards the top of the cavity, thereby causing the center of gravity of the rotating block to deviate from the axis of the rotating shaft to generate centrifugal force; in a power-off state, the metal strip loses its magnetism, and the magnetic particles At least most of the parts fall back to the bottom position of the cavity, so that the center of gravity of the rotating block coincides with the axis line of the rotating shaft; wherein, one rotation of the rotating shaft is represented as one cycle.

The present application also provides an electronic device, comprising at least one centrifugal motor as described above, where the centrifugal motor is fixedly connected to the electronic device.

The present application also provides a method for adjusting the angle of the electronic device during the falling process of the electronic device, which is applied to the electronic device as described above, and the method includes:

judging whether the electronic device is in the process of falling;

If the electronic device is in the process of falling, start the centrifugal motor, so that the rotating block of the centrifugal motor generates centrifugal force, so as to adjust the angle of the electronic device, so that the preset surface of the electronic device faces the preset collision object; Wherein, the preset surface is a side surface opposite to the display screen of the electronic device.

In the present application, a support is arranged on the housing, a magnetic coil is arranged on the support, a metal strip is arranged in the magnetic coil, and the rotating block is accommodated in the fixed sleeve. With the above structure, under the action of the driving mechanism, the rotation of the rotating shaft drives the fixed sleeve and the rotating block to rotate, and the magnetic coil is periodically energized to make the metal strip generate a magnetic attraction to attract the magnetic particles to the top of the accommodating slot, thereby making the rotating block The center of gravity deviates from the axis of the shaft to generate centrifugal force. During the continuous rotation of the above rotating shaft, a pulsed centrifugal force is generated during the time period when the center of gravity of the rotating block deviates from the axis line of the rotating shaft.

Then the electronic device using the above centrifugal motor can rotate the shaft when the electronic device is detected to fall, and the angle of the electronic device is adjusted by the centrifugal force generated by the centrifugal motor, so that the preset surface of the electronic device faces the preset collision object. , to prevent the fragile parts of the electronic device from contacting the preset collision object first, thereby reducing the probability of the screen of the electronic device breaking.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following briefly introduces the drawings that are used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

1 is a schematic three-dimensional structure diagram of a centrifugal motor according to an embodiment of the present application;

2 is a schematic front view of a centrifugal motor according to another embodiment of the present application;

FIG. 3 is a schematic structural diagram of the disassembled centrifugal motor shown in FIG. 1;

Fig. 4 is the cross-sectional structure schematic diagram along the a-a direction in Fig. 2;

Figure 5 is a schematic diagram of the centrifugal force generated by one rotation of the rotating block in one embodiment;

6 is a schematic structural diagram of an electronic device having a centrifugal motor according to an embodiment of the present application;

7 is a schematic structural diagram of an embodiment of the electronic device of the present application having two centrifugal motors;

8 is a schematic structural diagram of another embodiment of the electronic device of the present application having two centrifugal motors;

9 is a schematic structural diagram of still another embodiment of the electronic device of the present application having two centrifugal motors;

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

11 is a schematic structural diagram of an electronic device according to another embodiment of the present application;

12 is a schematic structural diagram of an electronic device in yet another embodiment of the present application;

FIG. 13 is a schematic flowchart of an embodiment of a method for adjusting the angle of an electronic device during a falling process of the electronic device according to the present application;

FIG. 14 is a schematic flowchart of another embodiment of a method for adjusting the angle of an electronic device during a fall of the electronic device.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, for the convenience of description, the drawings only show some but not all the structures related to the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

The terms "first", "second" and "third" in this application are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first", "second", "third" may expressly or implicitly include at least one of that feature. In the description of the present application, "a plurality of" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined. All directional indications (such as up, down, left, right, front, rear...) in the embodiments of the present application are only used to explain the relative positional relationship between components under a certain posture (as shown in the accompanying drawings). , motion situation, etc., if the specific posture changes, the directional indication also changes accordingly. Furthermore, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally also includes For other steps or units inherent to these processes, methods, products or devices.

Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor a separate or alternative embodiment that is mutually exclusive of other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

Referring to FIGS. 1-3 , the present application provides a centrifugal motor 100 , the centrifugal motor 100 can generate centrifugal force, so that the device on which the centrifugal motor 100 is installed can adjust the angle under the action of the centrifugal force. The centrifugal motor 100 includes a casing 10 , a rotating shaft 20 rotatably connected to the casing 10 , a fixed sleeve 22 disposed on the rotating shaft 20 , a rotating block 30 partially accommodated in the fixed sleeve 22 , and magnetic lines of force fixed on the casing 10 The ring 70 and the drive mechanism 50 rotatably connected with the rotating shaft 20 .

Specifically, in one embodiment, the housing 10 is provided with a support 12 , the rotating shaft 20 is rotatably connected to the housing 10 , the rotating shaft 20 is provided with a fixing sleeve 22 , and the fixing sleeve 22 forms an accommodating cavity. The rotating block 30 is accommodated in the accommodating cavity of the fixed sleeve 22 of the rotating shaft 20, and the rotating block 30 is provided with a cavity, and the bottom of the cavity is provided with magnetic particles 32. When the rotating block 30 is installed in the fixed sleeve 22, due to The gravitational magnetic particles 32 are located at the bottom of the cavity. At this time, the center of gravity of the entire rotating block 30 is coincident with the axis line of the rotating shaft 20 . The magnetic coil 70 is fixed on the support 12 and is located at the periphery of the fixing sleeve 22 , and a metal strip 80 is arranged in the magnetic coil 70 . The driving mechanism 50 is connected with the rotating shaft 20 to rotate the rotating shaft 20 and drive the fixed sleeve 22 and the rotating block 30 to rotate relative to the casing 10 .

At the same time, referring to FIG. 4 , the following explains the cooperation process between the various components during the rotation of the rotating shaft 20: under the action of the driving mechanism 50, the rotating shaft 20 rotates relative to the housing 10, and during one rotation, the magnetic coil is partially energized, The metal strip 80 generates an attractive force to attract the magnetic particles 32 toward the top of the cavity, thereby causing the center of gravity of the rotating block 30 to deviate from the axis line of the rotating shaft 20 to generate centrifugal force. When the magnetic coil 70 is not energized, the metal strip 80 loses its magnetic force, and at least most of the magnetic particles 32 fall back to the bottom of the cavity due to the loss of attractive force, so that the center of gravity of the rotating block 30 coincides with the axis line of the rotating shaft 20, As the rotating shaft 20 continues to rotate, the magnetic coil 70 is energized again for a period of time in the next rotating cycle, so that the metal strip 80 generates an attractive force and attracts the magnetic particles 32, so that the center of gravity of the rotating block 30 deviates from the axis line of the rotating shaft 20. , again generating a pulsed centrifugal force.

Then the electronic device using the above centrifugal motor 100 can make the rotating shaft 20 rotate when the electronic device is detected to fall, and the angle of the electronic device can be adjusted by the centrifugal force generated by the centrifugal motor 100, so that the preset surface of the electronic device faces the preset surface. A collision object is provided to prevent the fragile parts of the electronic device from contacting the preset collision object first, thereby reducing the probability of the screen of the electronic device breaking.

Referring to FIG. 5 , it is a schematic diagram of the rotating block generating centrifugal force after one rotation of the rotating shaft. In this embodiment, when the rotating shaft rotates to 270-360 degrees, the magnetic coil 70 is energized, and the metal strip 80 generates a magnetic force to attract the magnetic force in the rotating block 30 The particles move to the top of the cavity, so that the center of gravity of the rotating block 30 deviates from the axis line of the rotating shaft 20 to generate centrifugal force. Between 0 and 270 degrees, at least most of the magnetic particles 32 in the rotating block 30 are located at the bottom of the cavity, and the center of gravity of the rotating block 30 coincides with the axis line of the rotating shaft 20, so the rotating block 30 does not generate centrifugal force during this time. . That is to say, every time the rotating shaft 20 rotates once, the rotating block 30 generates a pulse of centrifugal force. In the process of adjusting the angle of the electronic device, at least one pulse of centrifugal force, or multiple pulses of centrifugal force is required.

It can be understood that during the rotation of the rotating block 30 , in order to make the magnetic particles 32 that have moved close to the magnetic coil 70 all move away from the magnetic coil 70 and return to the bottom of the cavity, the center of gravity of the rotating block 30 is completely aligned with the axis of the rotating shaft 20 . coincide. Then, during the rotation of the rotating shaft 20, the magnetic coil 70 generates a directional magnetic field in a part of the time period so that the metal strip 80 attracts the magnetic particles 32, and in other time periods of the part of the time period, the magnetic coil 70 generates the opposite magnetic field. The direction of the magnetic field makes the magnetic force generated by the metal strip 80 magnetically repel the magnetic particles 32, so that the magnetic particles 32 can better return to the bottom of the cavity, so that the center of gravity of the rotating block 30 completely coincides with the axis line of the rotating shaft 20. . That is to say, in different embodiments, during the continuous rotation of the rotating shaft 20, the magnetic coil 70 is energized at least part of the time, so that the metal strip 80 attracts the magnetic particles 32; During one rotation, the metal strip 80 produces an attractive force to the magnetic particles 32 for a part of the time period, and the metal strip 80 produces a repulsive force to the magnetic particles 32 for another part of the time period.

In one implementation, specifically, the support member 12 includes two arcuate claws 122 disposed opposite to each other, the two arcuate claws 122 form the outlet 124 , and the fixing sleeve 22 is surrounded by the two arcuate claws 122 . Further, in one embodiment, the magnetic coil 70 is disposed at the position of the outlet 124 and is opposite to the fixing sleeve 22 .

3 , specifically, in one embodiment, the housing 10 further includes a sleeve 14 , the sleeve 14 is fixedly connected to the support member 12 , and a part of the rotating shaft 20 is located in the sleeve 14 . Specifically, the shape of the sleeve 14 may be a cylindrical shape, a rectangular parallelepiped, or other shapes, as long as it has a cavity for a part of the rotating shaft 20 to pass through. A part of the rotating shaft 20 passes through the sleeve 14 .

Optionally, in an embodiment, one end or both ends of the support member 12 is provided with a limit sleeve 24, the limit sleeve 24 is provided with a groove (not shown) that communicates with the outlet 124 of the support member 12, and the fixed sleeve 22 Housed in the groove and outlet 124 that communicate with each other. Adopting such a structure can prevent the fixing sleeve 22 from axially sliding down from the supporting member 12 and being separated from the supporting member 12. In this embodiment, the outlet 124 of the supporting member 12 axially penetrates, or at least one end penetrates through to place the fixing sleeve 22 in. .

In one embodiment, the housing 10 of the present application further includes a handle 18 integrally formed with the sleeve 14 and the support 12 , as shown in FIG. 3 , a through hole is formed on the handle 18 . The handle 18 is provided mainly to facilitate the installation of the centrifugal motor 100 to other devices. In other embodiments, the above-mentioned handle 18 may not be included, for example, an accommodating hole is opened on the device to be installed, and the installation can be performed by interference fit or fixed connection by an adhesive layer.

In this embodiment, the driving mechanism 50 is a magnetic coil, and the rotating shaft 20 is partially sleeved in the magnetic coil. That is to say, when the rotating block 30 needs to generate centrifugal force, the magnetic coil is energized, and after the magnetic coil is energized, a magnetic force acts on the rotating shaft 20 to make the rotating shaft 20 rotate, thereby driving the rotating block 30 to rotate. It can be understood that the part of the rotating shaft 20 located in the sleeve 14 contains a permanent magnet rotor.

Optionally, in other embodiments, the driving mechanism 50 may also be other types of other motors capable of generating power, such as motors.

Referring to FIG. 6 , the present application further provides an electronic device 200 having the centrifugal motor 100 described in any of the above embodiments. Specifically, the electronic device 200 in the present application may be a mobile phone, an IPad, a smart wearable device, a digital audio and video player, an electronic reader, a handheld game console, a vehicle-mounted electronic device, a digital camera, a flash disk, and the like.

Referring to FIG. 7, optionally, in an embodiment, the centrifugal motor 100 installed in the electronic device 200 includes a first centrifugal motor 100a and a second centrifugal motor 100b, and the first and second centrifugal motors 100a and 100b are respectively fixed to the electronic device On opposite sides of the device 200 in the length direction, the centrifugal force generated by the rotating blocks 30 of the first and second centrifugal motors 100a and 100b has at least components in opposite directions. The different cases are as follows:

For example, the direction of the centrifugal force generated by the first centrifugal motor 100a acting on the electronic device 200 is opposite to the direction of the centrifugal force generated by the second centrifugal motor 100b acting on the electronic device 200 . For example, one centrifugal force is perpendicular to the display screen of the electronic device 200 upward, and the other centrifugal force is perpendicular to the display screen of the electronic device 200 downward, which is equivalent to one centrifugal force pulling upward, and the other centrifugal force pulling downward. The directions of the two centrifugal forces are opposite, so that the electronic device 200 can adjust the angle faster, for example, the electronic device 200 can be adjusted to a downward angle of the display screen to an upward angle of the display screen to avoid the collision of the display screen when the electronic device 200 hits the ground. On the ground, reduce the chance of the display breaking.

Optionally, in another embodiment, the first and second centrifugal motors 100a and 100b are respectively fixed on opposite sides of the electronic device 200 in the width direction, as shown in FIG. 8 .

In other embodiments, the directions of the centrifugal forces generated by the first and second centrifugal motors 100a and 100b may not be completely opposite, as long as the respective component forces of the two centrifugal forces are opposite in the same direction.

9, in another embodiment, at least two centrifugal motors 100c are installed on an electronic device 200a, the two centrifugal motors 100c are arranged side by side, and the centrifugal forces generated by the rotating blocks of the two centrifugal motors 100c are in the same direction. In another embodiment, the components of the centrifugal forces generated by the centrifugal forces generated by the rotating blocks 30 of the two centrifugal motors 100c may be the same in one direction. With such a structure, the two parallel centrifugal motors 100c can generate larger or more continuous centrifugal force acting on the electronic device 100a, that is, two centrifugal forces can be generated when the rotating shaft 20 rotates once. Specifically, the centrifugal force of the two pulses generated by the two centrifugal motors 100c can be in the same time period or in different time periods, so that the angle of the electronic device 100a can be adjusted more quickly.

It can be understood that, in other embodiments, the number of centrifugal motors 100c arranged side by side may also be three or more, which is not specifically limited.

Referring to FIG. 10, further, in yet another embodiment, at least two centrifugal motors 100d are arranged side by side on opposite sides of the electronic device 200b in the length direction, or on opposite sides in the width direction of the electronic device 200b, respectively, and the side-by-side on the same side The centrifugal force generated by the centrifugal motors 100d has at least a component force in the same direction, while the centrifugal force generated by the side-by-side centrifugal motors 100e on the other side is in the opposite direction to the centrifugal force generated by the side-by-side centrifugal motors 100d on one side. For example, the centrifugal force generated by the at least two centrifugal motors 100d arranged side by side near the top camera of the electronic device 200b is vertical to the display screen, while the centrifugal force generated by the at least two centrifugal motors 100d arranged side by side on the side near the bottom button of the electronic device 200d The centrifugal force is perpendicular to the display screen downward, and the forces in the two directions act together on the electronic device, and the adjustment speed is faster. It can be understood that the directions of the centrifugal forces generated by the at least two centrifugal motors 100d disposed side by side near the top camera of the electronic device 200b may not be exactly the same, as long as each centrifugal force has a component force in the same direction. The centrifugal forces generated by the at least two centrifugal motors that are arranged side by side near the button side of the bottom of the electronic device 100b may not be exactly the same, which will not be repeated here.

It can be understood that, in an embodiment, the centrifugal force component of the centrifugal force generated by the side-by-side centrifugal motors 100e on the other side of the electronic device 200b is in the opposite direction to the centrifugal force generated by the side-by-side centrifugal motors 100d on the side of the electronic device 200b. Can.

Optionally, in different embodiments, three centrifugal motors may also be provided on one electronic device 200c. For example, in one embodiment, one centrifugal motor 100f is located at the top of the electronic device 200c, and the other two centrifugal motors 100f are arranged side by side at the bottom of the electronic device 200c, as shown in FIG. 11 . In another embodiment, the first centrifugal motor 100g is located at the top of the electronic device 200d, the second centrifugal motor 100g is located at the bottom of the electronic device 200c, and the third centrifugal motor 100g is located at the middle edge of the electronic device 200c, as shown in FIG. 12 . shown. In other embodiments, the positions of the three centrifugal motors 100 on the electronic device 200 can be adjusted according to actual needs. Specifically, the direction of the centrifugal force generated by the three centrifugal motors 100 is the same as the setting principle of the above embodiment, mainly because the multiple centrifugal forces act together on the electronic device 200 to speed up the adjustment of the electronic device 200 , which is not repeated here. Of course, in other embodiments, a larger number of centrifugal motors 100 may be provided as required.

The present application also provides a method for adjusting the angle of an electronic device during a falling process of the electronic device, which is applied to the electronic device described in any of the above embodiments. FIG. 13 is a schematic flowchart of an embodiment of the method in the present application. Methods include:

101: Determine whether the electronic device is in a falling process.

In one embodiment, an acceleration sensor is set in the electronic device, and if the acceleration sensor detects the generation of gravitational acceleration, that is, the electronic device is in a free fall state, it is determined that the electronic device is in a falling state. Specifically, in different embodiments, it can be determined by the change of the acceleration in the direction of gravity of the electronic device and the time when the acceleration is generated. This is not elaborated.

102 : If the electronic device is in the process of falling, start the centrifugal motor so that the rotating block of the centrifugal motor generates centrifugal force to adjust the angle of the electronic device so that the preset surface of the electronic device faces the preset collision object.

When the centrifugal motor is started, the rotating block rotates and periodically eccentrically eccentric with the axis of the fixed sleeve to generate centrifugal force. The generated centrifugal force acts on the electronic device, so that the preset surface of the electronic device faces the preset collision object. Specifically, the preset surface of the electronic device is a surface that is relatively unbreakable or relatively impact-resistant, such as the back of the electronic device, or the surface with a protective cover. In different embodiments, the user can set a surface by himself according to the actual structure of the electronic device, or a part is a preset surface. The collision object generally refers to the ground, and may also be a wall or a tree trunk in other embodiments, for example, when the user falls and the electronic device is thrown out by force.

FIG. 14 is a schematic flow chart of the steps of the method in another embodiment. The method includes steps 201 to 204, wherein steps 201 and 202 are consistent with the above-mentioned embodiments, which will not be repeated here. The following focuses on steps 203 and 204:

201: Determine whether the electronic device is in a falling process.

202 : If the electronic device is in the process of falling, start the centrifugal motor, so that the rotating block of the centrifugal motor generates centrifugal force, so as to adjust the angle of the electronic device, so that the preset surface of the electronic device faces the preset collision object.

203 : Determine whether the electronic device is adjusted so that the preset surface faces the preset collision object.

The distance change between the preset surface and the preset collision object, and the distance change between the side opposite to the preset surface and the preset collision object are detected by the distance sensor, if the distance between the preset surface and the preset collision object changes The change and the change trend of the distance between the side opposite to the preset surface and the preset collision object are the same, for example, they are getting smaller and smaller, and the distance ratio between the preset surface and the preset collision object is the same as the preset surface. If the distance between the back side and the preset collision object is smaller, it is determined that the electronic device has been adjusted so that the preset surface faces the preset collision object. In other embodiments, the variation of the distance and the light conditions of the predetermined surface and the surface position of the surface opposite to the predetermined surface may also be used. For example, if the distance between the preset surface and the preset collision object changes and the distance between the side opposite to the preset surface and the preset collision object changes in the same trend, for example, they are getting smaller and smaller, and the preset surface If the light on the surface is opposite to the light on the surface of the surface opposite to the preset surface, it is determined that the electronic device has been adjusted so that the preset surface faces the preset collision object.

204: If yes, turn off the centrifugal motor.

Since the electronic device has been adjusted so that the preset surface faces the preset collision object, it is only necessary to turn off the centrifugal motor at this time, so that the preset surface of the electronic device can touch the collision object instead of the fragile surface of the electronic device. Protect electronic devices well.

The present application also provides a device with a storage function, storing program data, and when the program data is executed, the methods described in the above embodiments are implemented. Specifically, the above-mentioned device with a storage function may be one of a personal computer, a server, a network device, or a USB flash drive.

The above description is only an embodiment of the present application, and is not intended to limit the scope of the patent of the present application. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present application, or directly or indirectly applied to other related technologies Fields are similarly included within the scope of patent protection of this application.

Claims (9)

1. a centrifugal motor, is characterized in that, comprises: a casing, a support member is arranged on the casing; a rotating shaft, which is rotatably connected with the casing, and a fixing sleeve is arranged on the rotating shaft; The rotating block is accommodated in the fixed sleeve, and a cavity is set in the rotating block, and the bottom of the cavity is provided with magnetic particles; a magnetic coil, fixed on the support and located on the periphery of the fixing sleeve, a metal strip is arranged in the magnetic coil, and a driving mechanism, connected with the rotating shaft to rotate the rotating shaft; Wherein, the rotation of the rotating shaft drives the fixed sleeve and the rotating block to rotate, the magnetic coil is energized for part of a cycle, and de-energized for part of the time; The magnetic particles are attracted towards the top of the cavity, thereby causing the center of gravity of the rotating block to deviate from the axis of the rotating shaft to generate centrifugal force; in a power-off state, the metal strip loses its magnetism, and the magnetic particles At least most of the parts fall back to the bottom position of the cavity, so that the center of gravity of the rotating block coincides with the axis line of the rotating shaft; wherein, one rotation of the rotating shaft is represented as one cycle. 2 . The centrifugal motor according to claim 1 , wherein the support member comprises two arc-arc claws arranged opposite to each other, the two arc-arc claws constitute an outlet, and the magnetic coil is located at the outlet position. 3 . , opposite to the fixed sleeve. 3. The centrifugal motor according to claim 2, wherein one end or both ends of the support member is provided with a limit sleeve, and the limit sleeve is provided with a groove that communicates with the outlet of the support member, so The fixing sleeve is accommodated in the communicating groove and the outlet. 4 . The centrifugal motor according to claim 1 , wherein the casing further comprises a sleeve, the sleeve is fixedly connected with the support, and the rotating shaft is partially located in the sleeve. 5 . 5. An electronic device, characterized in that it comprises at least one centrifugal motor according to any one of claims 1-4, the centrifugal motor being fixedly connected to the electronic device. 6. The electronic device according to claim 5, wherein the at least one centrifugal motor comprises a first centrifugal motor and a second centrifugal motor, and the first and second centrifugal motors are respectively fixed to the electronic device The opposite sides in the length direction, or are respectively fixed on the opposite sides in the width direction of the electronic device, and the centrifugal forces generated by the rotating blocks of the first and second centrifugal motors have at least components in opposite directions. 7. The electronic device according to claim 5, wherein the electronic device comprises at least two centrifugal motors, at least two centrifugal motors are arranged side by side, and at least two rotating blocks of the centrifugal motors The centrifugal force generated is in the same direction or the centrifugal force generated by each has at least a component force in the same direction. 8. A method for adjusting the angle of an electronic device during a falling process of the electronic device, applied to the electronic device according to any one of claims 5-7, characterized in that, comprising: judging whether the electronic device is in the process of falling; If the electronic device is in the process of falling, start the centrifugal motor, so that the rotating block of the centrifugal motor generates centrifugal force, so as to adjust the angle of the electronic device, so that the preset surface of the electronic device faces the preset collision object; Wherein, the preset surface is a side surface opposite to the display screen of the electronic device. 9. The method for adjusting the angle of the electronic device during the fall of the electronic device according to claim 8, further comprising: determining whether the electronic device is adjusted so that the predetermined surface faces the predetermined collision object; If so, turn off the centrifugal motor.

Images