CN217010935U

CN217010935U - Electronic device

Info

Publication number: CN217010935U
Application number: CN202220724916.1U
Authority: CN
Inventors: 蔡晓东; 刘松
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2022-03-30
Filing date: 2022-03-30
Publication date: 2022-07-19
Anticipated expiration: 2032-03-30

Abstract

The utility model discloses an electronic device, comprising: a housing; the first sound-producing device is arranged on the shell and comprises a first magnetic circuit system, a first vibration system and a second vibration system, the first vibration system comprises a first vibrating diaphragm and a first voice coil, the second vibration system comprises a second vibrating diaphragm, a first sound cavity is formed between the first vibrating diaphragm and the first magnetic circuit system, a second sound cavity is formed between the second vibrating diaphragm and the first magnetic circuit system, and a through hole is formed between the first sound cavity and the second sound cavity; the shell is provided with two first sound outlets corresponding to the first sound-emitting device, wherein one first sound outlet is arranged corresponding to the first vibrating diaphragm, the other first sound outlet is arranged corresponding to the second vibrating diaphragm, and an included angle between sound-emitting directions of the two first sound outlets is smaller than 180 degrees; and the second sound generating device is arranged on the shell, and the shell is provided with a second sound outlet corresponding to the second sound generating device. The technical scheme of the utility model can reduce the risk of sound leakage of the electronic equipment during conversation and can realize sound emission of the electronic equipment.

Description

Electronic device

Technical Field

The utility model relates to the technical field of acoustic equipment, in particular to electronic equipment.

Background

In an electronic device, such as a mobile phone, a tablet computer, a portable computer, etc., a sound generating device is generally installed inside the electronic device. However, when an electronic device such as a mobile phone is used for a call, the problem of sound leakage generally exists, and personal privacy protection is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide electronic equipment, aiming at reducing the risk of sound leakage when the electronic equipment is in a call.

To achieve the above object, the present invention provides an electronic device comprising:

a housing;

the first sound-generating device is arranged on the shell and comprises a first magnetic circuit system, a first vibration system and a second vibration system which are respectively arranged on two opposite sides of the first magnetic circuit system, the first vibration system comprises a first diaphragm and a first voice coil arranged on the first diaphragm, at least part of the first voice coil extends into the magnetic gap of the first magnetic circuit system, the second vibration system comprises a second diaphragm, a first sound cavity is formed between the first diaphragm and the first magnetic circuit system, a second sound cavity is formed between the second diaphragm and the first magnetic circuit system, a through hole is arranged between the first sound cavity and the second sound cavity, the airflow generated by the vibration sound production of the first vibrating diaphragm is transmitted to the second vibrating diaphragm through the first sound cavity, the through hole and the second sound cavity in sequence so as to drive the second vibrating diaphragm to vibrate and produce sound;

the shell is provided with two first sound outlets corresponding to the first sound-emitting device, one of the first sound outlets is communicated with one side of the first vibrating diaphragm, which is far away from the first sound cavity, the other first sound outlet is communicated with one side of the second vibrating diaphragm, which is far away from the second sound cavity, and the included angle between the sound-emitting directions of the two first sound outlets is smaller than 180 degrees; and

the second sound generating device is arranged on the shell, and the shell corresponds to the second sound generating device and is provided with a second sound outlet.

Optionally, the second diaphragm is provided as a flexible diaphragm.

Optionally, the second diaphragm is a waterproof diaphragm.

Optionally, the second diaphragm is made of polymer plastic, thermoplastic elastomer or silicone rubber.

Optionally, the through hole comprises a first through hole provided in the first magnetic circuit system.

Optionally, the first magnetic circuit comprises a central magnetic circuit portion and a side magnetic circuit portion, at least one of the central magnetic circuit portion and the side magnetic circuit portion being provided with a permanent magnet, a magnetic gap of the first magnetic circuit being formed between the central magnetic circuit portion and the side magnetic circuit portion;

the central magnetic path portion and/or the side magnetic path portion are provided with the first through-hole.

Optionally, the first magnetic circuit system is provided with a first through hole communicating with the magnetic gap thereof.

Optionally, the first sound-emitting device further includes a first housing connecting the first vibration system, the first magnetic circuit system, and the second vibration system, and the through hole includes a second through hole provided in the first housing.

Optionally, the first sound generating device and the two first sound outlets are both arranged at the upper end of the shell, and the second sound generating device and the second sound outlets are both arranged at the lower end of the shell.

Optionally, the housing has a front shell, a rear shell and a middle frame, the front shell is provided with a display part, the rear shell is arranged opposite to the front shell, and the middle frame is located between the rear shell and the front shell;

one of the first sound outlets is arranged at the joint of the front shell or the front shell and the top frame edge of the middle frame, and the other first sound outlet is arranged at the joint of the rear shell, the top frame edge of the middle frame or the rear shell and the top frame edge of the middle frame; and/or

The second sound outlet is arranged at the front shell, the bottom frame edge of the middle frame or the joint of the front shell and the bottom frame edge of the middle frame.

In the technical scheme of the utility model, two first sound outlets which are respectively and correspondingly arranged with a first vibrating diaphragm and a second vibrating diaphragm of a first sound-emitting device are arranged on a shell of the electronic equipment, and the distances of the two sound outlets are close, so that when a user uses the electronic equipment for conversation, only the first sound-emitting device is opened, and one of the first sound outlets is close to the ear of the user, so that the user can hear conversation sound, and for people around the user, a sound dipole effect can be formed, specifically, as the two first sound outlets are respectively communicated with the two opposite sides of the first vibrating diaphragm and the second vibrating diaphragm, namely, sound waves with opposite phases are emitted by the two first sound outlets, the distance between the two first sound outlets can be ignored, the distances from the two first sound outlets to the ears of people around are close, the sound waves with opposite phases reach the positions of the ears of people around and are mutually offset, the purpose of reducing the sound leakage is achieved; in particular, for the user of the electronic device, the distance between the two first sound outlets and the ears thereof is relatively different, the condition of the acoustic dipole effect is not satisfied, the sound wave cancellation degree is small, and therefore the user of the electronic device can hear the sound with proper loudness. In addition, the electronic equipment is also provided with a second sound generating device, so that when a user uses the electronic equipment to play video or audio, the second sound generating device can be opened only to play sound through a second sound outlet of the shell of the electronic equipment.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an electronic device according to an embodiment of the utility model;

FIG. 2 is an enlarged view of FIG. 1 at A;

fig. 3 is a partially enlarged view of another embodiment of the electronic device of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1	Shell body	11	First sound outlet
12	Second sound outlet	101	Front shell
				102	Rear shell	103	Middle frame
26	Second diaphragm	2	First sound generating device
				21	First diaphragm	22	First voice coil
20	Magnetic gap	23	Central magnetic circuit part
				24	Side magnetic circuit part	25	First shell
201	First through hole	202	Second through hole
				3	Second sound generating device

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used for explaining the relative position relationship between the components, the motion situation, and the like in a specific posture, and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" and/or "appears throughout, the meaning includes three parallel schemes, for example," A and/or B "includes scheme A, or scheme B, or a scheme satisfying both schemes A and B. In addition, technical solutions between the embodiments may be combined with each other, but must be based on the realization of the technical solutions by a person skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides an electronic device which can be a mobile phone, a tablet computer, a computer or an intelligent watch and the like.

Referring to fig. 1 and 2, in an embodiment of the present invention, the electronic device includes:

a housing 1;

the first sound-emitting device 2 is arranged on the shell 1, the first sound-emitting device 2 comprises a first magnetic circuit system, and a first vibration system and a second vibration system which are respectively arranged on two opposite sides of the first magnetic circuit system, the first vibration system comprises a first vibrating diaphragm 21 and a first voice coil 22 arranged on the first vibrating diaphragm 21, at least part of the first voice coil 22 extends into a magnetic gap 20 of the first magnetic circuit system, the second vibration system comprises a second vibrating diaphragm 26, a first sound cavity is formed between the first vibrating diaphragm 21 and the first magnetic circuit system, a second sound cavity is formed between the second vibrating diaphragm 26 and the first magnetic circuit system, and a through hole is arranged between the first sound cavity and the second sound cavity; the first voice coil 22 drives the first diaphragm 21 to vibrate and sound, and the airflow generated by the vibration and sound of the first diaphragm 21 is transmitted to the second diaphragm 26 through the first sound cavity, the through hole and the second sound cavity in sequence so as to drive the second diaphragm 26 to vibrate and sound;

the housing 1 is provided with two first sound outlets 11 corresponding to the first sound generating device 2, wherein one of the first sound outlets 11 is communicated with one side of the first diaphragm 21 away from the first sound cavity, the other first sound outlet 11 is communicated with one side of the second diaphragm 26 away from the second sound cavity, and an included angle between sound emitting directions of the two first sound outlets 11 is smaller than 180 degrees; and

the second sound generating device 3 is arranged on the shell 1, and the shell 1 is provided with a second sound outlet 12 corresponding to the second sound generating device 3.

It is understood that in the present invention, the first sound emitting device 2 and the second sound emitting device 3 are selectively turned on by power. For example, in some embodiments, a switch is further disposed on the electronic device, and the switch may be, but is not limited to, a single-pole double-throw switch, so as to enable the selective opening of the first sound generating device 2 and the second sound generating device 3 through the switch. However, the design is not limited thereto, and in other embodiments, the electronic device is provided with a display screen, and a virtual switch button can be called on the display screen, so that the first sound generating device 2 and the second sound generating device 3 are selectively turned on through the virtual switch button. In still other embodiments, the opening of the first sounding device 2 and the second sounding device 3 can also be automatically controlled, for example, when the electronic device is in a call, the first sounding device 2 is automatically controlled to be opened, and when the electronic device plays video or audio, the second sounding device 3 is automatically controlled to be opened.

In the technical solution of the present invention, two first sound outlets 11 are provided on a housing 1 of an electronic device, the two first sound outlets 11 are provided corresponding to a first diaphragm 21 and a second diaphragm 26 of a first sound emitting apparatus 2, and the two sound outlets are close to each other, so that when a user uses the electronic device to talk, the first sound emitting apparatus 2 can be opened only, and one of the first sound outlets 11 is close to an ear of the user, so that the user can hear talk sound, and for people around the user, an acoustic dipole effect can be formed, specifically, since the two first sound outlets 11 are respectively communicated with two opposite sides of the first diaphragm 21 and the second diaphragm 26, that is, sound waves with opposite phases are emitted from the two first sound outlets 11, and a distance between the two first sound outlets 11 can be ignored, distances from the two first sound outlets 11 to ears of people around are close, and sound waves with opposite phases reach positions of the ears of people around and cancel each other, the purpose of reducing the noise leakage is achieved; in particular, for the user of the electronic device, the distance between the two first sound outlets 11 and the ears thereof is relatively different, the condition of the acoustic dipole effect is not satisfied, the sound wave cancellation degree is small, and therefore the user of the electronic device can hear the sound with proper loudness. In addition, the electronic device is further provided with a second sound generating device 3, so that when a user plays video or audio by using the electronic device, the second sound generating device 3 can be opened only to make sound be emitted through the second sound outlet 12 of the electronic device housing 1.

In one embodiment, the second diaphragm 21 is configured as a flexible diaphragm, that is, the second diaphragm 26 has flexibility. It can be understood that, in the present invention, the first diaphragm 21 is an active diaphragm, the second diaphragm 26 is a passive diaphragm, and when the second diaphragm 26 is set as a flexible diaphragm, the second diaphragm 26 can be more easily driven by the airflow, so as to improve the vibration effect of the second diaphragm 26.

In another embodiment, the second diaphragm 26 is a waterproof diaphragm, that is, the second diaphragm 26 has waterproofness, so that the second cavity is prevented from water entering, and the probability of water entering failure of the product is reduced.

In another embodiment, the second diaphragm 26 is a flexible diaphragm with waterproof property, that is, the second diaphragm 26 has both flexibility and waterproof property. Optionally, the second diaphragm is made of polymer plastic, thermoplastic elastomer, silicon rubber, or the like.

Further, the through hole includes a first through hole 201 provided in the first magnetic circuit system. It can be understood that the first magnetic circuit system is generally opposite to both the first diaphragm 21 and the second diaphragm 26, that is, the first through hole 201 is opposite to both the first diaphragm 21 and the second diaphragm 26, so that the air flow generated by the vibration of the first diaphragm 21 can be more smoothly transmitted to the second diaphragm 26 through the first through hole 201, so as to facilitate the generation of the passive vibration of the first diaphragm 26.

Alternatively, the first magnetic circuit system includes a central magnetic circuit portion 23 and a side magnetic circuit portion 24, at least one of the central magnetic circuit portion 23 and the side magnetic circuit portion 24 is provided with a permanent magnet, and the magnetic gap 20 of the first magnetic circuit system is formed between the central magnetic circuit portion 23 and the side magnetic circuit portion 24, in which case the first voice coil 22 is generally disposed around the central magnetic circuit portion 23. However, the present design is not limited thereto, and in other embodiments, the first magnet system may also include two oppositely disposed magnet sets, the magnetic gap 20 of the first magnetic circuit system is formed between the two magnet sets, in this case, the first voice coil 22 is a flat voice coil, and the axial direction of the first voice coil 22 is perpendicular to the stacking direction of the magnet sets.

Further, the central magnetic path portion 23 may be provided with the first through hole 201; it can be understood that the amplitude of the central portion of the first diaphragm 21 is usually the largest, and the vibrating airflow is the strongest, and the first through hole 201 is provided on the central magnetic circuit portion 23 opposite to the central portion of the first diaphragm 21, so that the vibrating airflow can be better transmitted to the second diaphragm 26 through the first through hole 201, and the passive vibration of the first diaphragm 26 can be better generated.

Alternatively, the side magnetic circuit portion 24 may also be provided with the first through hole 201; indeed, the first through hole 201 of the side magnetic circuit portion 24 can also transmit the vibrating air flow to the second diaphragm 26.

Optionally, the first magnetic circuit system may further be provided with a first through hole 201 communicating with the magnetic gap 20 thereof; indeed, the first through hole 201 communicating with the magnetic gap 20 can also transmit the vibrating air flow to the second diaphragm 26; in particular, the first through hole 201 communicating with the magnetic gap 20 of the first magnetic circuit system needs to penetrate through a relatively short physical thickness, which is beneficial to the opening of the first through hole 201. Further alternatively, the first through holes 201 communicating with the magnetic gap 20 of the first magnetic circuit system are generally provided in plural, and the plural first through holes 201 are arranged at intervals along the magnetic gap 20 to increase the passing area of the vibrating airflow.

Without loss of generality, in another embodiment, with reference to fig. 3, the first sound-emitting device 2 further comprises a first housing 25 connecting the first vibration system, the first magnetic circuit system and the second vibration system. Further, the through hole may further include a second through hole 202 provided in the first housing 25; indeed, the second through-hole 202 is capable of transmitting a vibrating airflow to the second diaphragm 26.

Further, the first sound generating device 2 and the second sound generating device 3 are respectively disposed at two opposite ends of the housing 1, specifically, the first sound generating device 2 is disposed at an upper end of the housing 1, and the second sound generating device 3 is disposed at a lower end of the housing 1, it can be understood that the two first sound outlets 11 are also disposed at the upper end of the housing 1, and the second sound outlet 12 is disposed at the lower end of the housing 1; therefore, the installation space of the upper end and the lower end of the shell 1 can be more reasonably utilized, and in addition, the first sound-emitting device 2 capable of realizing far-field sound attenuation is arranged at the upper end of the shell 1, so that the use habit that the upper end of the shell 1 is attached to the ear when a user uses electronic equipment to communicate is met. However, the present design is not limited thereto, and in other embodiments, the first sound generating device 2 and the second sound generating device 3 may also be disposed at the same end of the housing 1; alternatively, the first sound generating device 2 is disposed at the upper end of the housing 1, and the second sound generating device 3 is disposed at one side edge of the housing 1 adjacent to the upper end.

In the embodiment, the electronic device is taken as a mobile phone for illustration, but is not limited thereto. The housing 1 has a front case 101, a rear case 102, and a middle frame 103, the front case 101 being provided with a display portion, the rear case 102 being disposed opposite to the front case 101, and the middle frame 103 being located between the rear case 102 and the front case 101.

In this embodiment, for the two first sound outlets 11, one of the first sound outlets 11 is closer to the front shell 101 than the other first sound outlet 11, so as to ensure that when a user uses the electronic device for a call, the user can couple well with the ear of the user through the first sound outlet 11 closer to the front shell 101, so that the user can clearly hear call sound, and the call answering effect of the user is improved.

Optionally, the first sound outlet 11 relatively closer to the front shell 101 is disposed at the joint of the top frame of the front shell 101 and the top frame of the middle frame 103, so that the occupied space of the first sound outlet 11 in the front shell 101 can be reduced, that is, the space of the front shell 101 for setting the display portion occupied by the first sound outlet 11 can be reduced, which is beneficial to increasing the size of the display portion and realizing a full-screen mobile phone. However, the design is not limited thereto, in other embodiments, the first sound outlet 11 near the front shell 101 may also be directly disposed on the front shell 101, so that the first sound outlet 11 is more favorable for the attachment between the ear of the user and the ear of the user, so as to improve the clarity of the ear of the user hearing the conversation sound.

Optionally, the first sound outlet 11 relatively closer to the rear shell 102 is arranged at the joint of the rear shell 102 and the top frame edge of the middle frame 103; it can be understood that the corner positions are usually easier to be ignored, that is, when the first sound outlet 11 is disposed at the joint of the rear shell 102 and the top frame edge of the middle frame 103, hiding of the first sound outlet 11 is facilitated, and when another sound outlet is disposed at the joint of the front shell 101 and the top frame edge of the middle frame 103, the two first sound outlets 11 are symmetrical about the middle plane of the casing 1, which is more favorable for cancellation of sound waves in the far field, and the sound attenuation effect is better. However, the design is not limited thereto, and in other embodiments, the first sound outlet 11 relatively closer to the rear shell 102 may also be disposed at the top frame edge of the middle frame 103 or the rear shell 102, so as to achieve the acoustic dipole effect and reduce the sound leakage risk.

Optionally, a front sound outlet channel for communicating the first front sound cavity with the first sound outlet 11 is formed by spacing the top of the front shell 101 and the top frame edge of the middle frame 103, that is, the front sound outlet channel is formed by directly using a fit gap between the top of the front shell 101 and the top frame edge of the middle frame 103. However, the present design is not limited thereto, and in other embodiments, a sound notch may be formed in at least one of the top of the front shell 101 and the top frame edge of the middle frame 103, so as to form the front sound emitting channel through the sound notch.

Optionally, a rear sound outlet channel communicating the first rear sound cavity with the other first sound outlet 11 is formed by spacing the top of the rear shell 102 and the top frame edge of the middle frame 103, that is, the rear sound outlet channel is formed by directly using a fit gap between the top of the rear shell 102 and the top frame edge of the middle frame 103. However, the design is not limited thereto, and in other embodiments, a sound notch may be formed in at least one of the top of the rear shell 102 and the top frame edge of the middle frame 103, so as to form the rear sound channel through the sound notch.

Optionally, the rear sound emitting channel at least partially penetrates through the top frame edge of the middle frame 103, for example, a part of the rear sound emitting channel is formed by spacing the top of the rear shell 102 and the top frame edge of the middle frame 103, and a part of the rear sound emitting channel partially penetrates through the top frame edge of the middle frame 103, so that a part of the rear sound emitting channel can be formed by directly using a fit clearance between the top of the rear shell 102 and the top frame edge of the middle frame 103, and thus, the structure of the product is simpler and the production and implementation are easy.

Furthermore, the center lines of the two first sound outlets 11 are located on the same first plane, and the first plane is perpendicular to the front surface of the display portion, in this case, the two first sound outlets 11 are opposite to each other in the thickness direction of the electronic device; thus, the leakage of sound to people around the electronic device is reduced.

Optionally, the second sound outlet 12 is disposed on the bottom frame side of the middle frame 103, so that the second sound outlet 12 can be completely prevented from occupying the space of the front shell 101, that is, the space of the front shell 101 occupied by the second sound outlet 12 can be prevented from occupying, and the realization of a full-screen mobile phone is facilitated. However, the design is not limited thereto, and in other embodiments, the second sound outlet 12 may also be disposed at the front shell 101 or a joint of the front shell 101 and the bottom frame of the middle frame 103, so as to also emit the sound emitted by the second sound emitting device 3.

Further, the periphery of the first sound-emitting device 2 is hermetically connected with the housing 1 to isolate the two first sound outlets 11. Taking the first diaphragm 21 corresponding to the first sound outlet 11 close to the front shell 101 as an example, this embodiment can avoid the inverse sound wave emitted by the second diaphragm 26 from leaking and propagating to the first sound outlet 11 close to the front shell 101 through the sealing isolation of the two first sound outlets 11, thereby avoiding the sound heard by the near ear of the user from decreasing, and ensuring that the user can hear clear conversation sound during conversation. Optionally, a sealing ring (not shown) is disposed between the periphery of the first sound-generating device 2 and the housing 1, so as to achieve a sealing connection through the sealing ring; however, the design is not limited thereto, and in other embodiments, the periphery of the first sound emitting device 2 may also be adhered to the housing 1 by an adhesive (not shown), so as to achieve the sealing and isolation of the two first sound outlets 11 while achieving the stable installation of the first sound emitting device 2 by the adhesive.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. An electronic device, comprising:

a housing;

2. The electronic device of claim 1, wherein the second diaphragm is configured as a flexible diaphragm.

3. The electronic device of claim 1, wherein the second diaphragm is configured as a waterproof diaphragm.

4. The electronic device of claim 1, wherein the second diaphragm is made of polymer plastic, thermoplastic elastomer or silicon rubber.

5. The electronic device of claim 1, wherein the via comprises a first via provided to the first magnetic circuit system.

6. An electronic device as claimed in claim 5, wherein the first magnetic circuit system comprises a central magnetic circuit portion and a side magnetic circuit portion, at least one of the central magnetic circuit portion and the side magnetic circuit portion being provided with a permanent magnet, a magnetic gap of the first magnetic circuit system being formed between the central magnetic circuit portion and the side magnetic circuit portion;

7. An electronic device according to claim 5, wherein the first magnetic circuit system is provided with a first through hole communicating with the magnetic gap thereof.

8. The electronic device according to claim 1, wherein the first sound-emitting apparatus further comprises a first housing connecting the first vibration system, the first magnetic circuit system, and the second vibration system, and the through-hole comprises a second through-hole provided in the first housing.

9. The electronic device according to any one of claims 1 to 8, wherein the first sound emitting device and the two first sound outlets are both provided at an upper end of the housing, and the second sound emitting device and the second sound outlet are both provided at a lower end of the housing.

10. The electronic device according to claim 9, wherein the housing has a front case provided with a display portion, a rear case disposed opposite to the front case, and a middle frame between the rear case and the front case;