CN112601160B - Sound production device and electronic device - Google Patents

Sound production device and electronic device Download PDF

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Publication number
CN112601160B
CN112601160B CN202011425446.0A CN202011425446A CN112601160B CN 112601160 B CN112601160 B CN 112601160B CN 202011425446 A CN202011425446 A CN 202011425446A CN 112601160 B CN112601160 B CN 112601160B
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China
Prior art keywords
shell
frame
vibration
side wall
basin
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CN202011425446.0A
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Chinese (zh)
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CN112601160A (en
Inventor
毛林进
李红霞
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Goertek Inc
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Goertek Inc
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Abstract

The invention belongs to the technical field of electroacoustic conversion, and particularly discloses a sound production device and an electronic device. The sound generating device includes: the magnetic circuit system comprises a basin frame and magnetic components, at least one part of the magnetic components are arranged on the basin frame, and an elastic part is arranged on the outer surface of the basin frame; the vibration assembly comprises a vibrating diaphragm and a voice coil, the vibrating diaphragm is connected with the voice coil, and at least one part of the voice coil is positioned in the magnetic circuit system; the magnetic circuit system is arranged in the shell, the basin frame and the shell form a relatively fixed relation, the elastic piece is clamped between the shell and the basin frame, and the vibration assembly is connected with the shell. According to the technical scheme, the vibration of the basin frame and the vibration transmitted to the shell and other parts in contact with the basin frame can be reduced in the sounding process of the sounding device, so that the whole sounding device is damped.

Description

Sound production device and electronic device
Technical Field
The invention belongs to the technical field of electroacoustic conversion, and particularly relates to a sound production device and an electronic device.
Background
The sound generating device is an important electroacoustic transducer element in electronic products, and is used for converting current signals into sound. Along with the rapid development of electronic products in recent years, sound generating devices applied to the electronic products are also improved correspondingly.
In the sound generating mechanism working process, the basin frame can vibrate along with the vibration of the voice coil loudspeaker voice coil, and then the casing that leads to contacting with the basin frame vibrates, has strong vibration sense of touch at complete machine module sound production in-process, can influence the sound producing effect of whole device. In practical applications, the sound generating device module is usually disposed in an electronic device such as a mobile phone or a tablet computer for generating sound, and the vibration may cause problems such as noise and sound distortion.
Disclosure of Invention
In order to solve the above problems, the present invention provides a sound generating apparatus including:
the magnetic circuit system comprises a basin frame and a magnetic assembly, the magnetic assembly is arranged on the basin frame, and an elastic part is arranged on the surface of the basin frame;
the vibration assembly comprises a vibrating diaphragm and a voice coil, the vibrating diaphragm is connected with the voice coil, and at least one part of the voice coil is positioned in the magnetic circuit system;
the casing, the vibration subassembly with magnetic circuit is fixed in the casing, the elastic component clamp is established the casing with between the basin frame.
Optionally, the basin stand has a side wall, the elastic member covers on an outer surface of the side wall, and the elastic member is clamped between the outer surface of the side wall and the housing.
Optionally, the lateral wall of basin frame is equipped with the breach that removes the material and form, the elastic component encircles the lateral wall sets up and with the lateral wall forms the profile modeling structure.
Optionally, the elastic member covers the entire side wall in the height direction of the side wall.
Optionally, the elastic element is disposed on an outer surface of the bottom wall, and the elastic element is sandwiched between the bottom wall and the housing.
Optionally, the elastic member is made of silicone or rubber.
Optionally, the elastic member is injection molded or bonded to the frame.
Optionally, after the basin stand is fixed to the housing, the elastic member is elastically deformed.
The present invention also provides an electronic device, comprising:
the electronic device shell and any one of the sound generating devices, wherein the basin frame of the sound generating device is exposed out of the shell of the sound generating device.
Optionally, the elastic part is partially clamped between the bottom wall of the basin stand and the electronic device housing.
The invention has the technical effect that the elastic piece is arranged on the surface of the basin frame and clamped between the surface of the basin frame and the shell, so that the vibration of the shell and other parts which are in contact with the basin frame and caused by the vibration of the basin frame is reduced, and the aim of damping the whole sound production device is fulfilled.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic view of a partial structure of a sound generating device;
FIG. 2 is a schematic sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic view of the assembled relationship of the housing and the basin stand;
FIG. 4 is a schematic view of the resilient member disposed around the sidewall;
FIG. 5 is a schematic sectional view taken along line B-B of FIG. 4;
FIG. 6 is a schematic view of the elastic member covering the entire side wall of the tub frame in the height direction of the side wall.
Description of reference numerals:
1-a magnetic circuit system; 11-a basin stand; 111-side walls of the frame; 112-a frame bottom wall; 12-a magnetic assembly; 2-a vibrating assembly; 21-a voice coil; 22-a diaphragm; 3-a shell; 4-elastic member.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be considered a part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
The sound generating device is a device for converting an electric signal into an acoustic signal, and the principle of the sound generating device is that a current-carrying conductor (i.e., a voice coil) is stressed in a magnetic field, and the force is in direct proportion to the current passing through the voice coil, so that the electric signal is converted into the vibration of the voice coil. The magnetic field is generally provided by a magnetic circuit system, which includes a frame and a magnet assembly. Under the effect of electric current, the basin frame can produce the vibration along with the vibration of voice coil loudspeaker voice coil, the vibration of basin frame can further lead to parts such as the casing rather than the contact to vibrate, the vibration of parts such as casing leads to at the sound production in-process, and whole sound generating mechanism has strong vibration sense of touch, influences the sound production effect of whole device. In addition, in order to ensure the sealing performance of the whole sounding device, the basin frame and the shell are usually sealed by using a sealant, and in the production process of products, the steps of gluing, airing and the like are required during the sealing treatment of the sealant, so that the production efficiency is reduced; still often can appear the rubber coating inequality at the rubber coating or dry the in-process, sealed glue colloid shrink or remain the problem such as bubble in the colloid, lead to sealed effect poor, produce bad phenomena such as gas leakage.
Referring to fig. 1 to 2, the present embodiment provides a sound generating apparatus including: magnetic circuit system 1, vibration assembly 2 and housing 3.
The magnetic circuit system 1 comprises a basin frame 11 and a magnetic assembly 12, wherein the magnetic assembly 12 is arranged on the basin frame 11, and an elastic part 4 is arranged on the surface of the basin frame 11. The vibration assembly 2 comprises a diaphragm 22 and a voice coil 21, the diaphragm 22 is connected with the voice coil 21, and at least a part of the voice coil 21 is located in the magnetic circuit system 1. The vibration component and the magnetic circuit system 1 are fixed on the shell 3, and the elastic piece 4 is clamped between the shell 3 and the basin frame 11. When the sound generating device works, the voice coil 21 in the vibration assembly 2 is stressed in the magnetic circuit system 1, and the vibrating diaphragm 22 connected with the voice coil 21 is caused to vibrate to generate sound. During the vibration of the vibration assembly 2, the vibration of the voice coil 21 can cause the frame 11 in the magnetic circuit system 1 to vibrate. The vibration of basin frame 11 can cause with the casing 3 vibration of basin frame 11 contact, the vibration of casing 3 and then can cause whole sound generating mechanism to have strong vibration sense of touch to influence the vocal effect. This application casing 3 can be the free casing of sound generating mechanism, also can be the casing of sound generating mechanism module (containing back sound chamber), also can contain sound generating mechanism's electron device's shell.
In the present embodiment, the frame 11 is a supporting structural frame in the sound generating apparatus for supporting and fixing the magnetic circuit system 1 and the vibration assembly 2. When the vibration component 2 vibrates, most of the vibration received by the magnetic circuit system 1 such as the basin stand 111 can be transmitted to the shell 3 through the basin stand. The elastic piece 4 is arranged on the surface of the basin frame 11, and the elastic piece 4 is clamped between the shell 3 and the basin frame 11, so that the vibration of the basin frame 11 can be absorbed, and the vibration transmitted from the basin frame 11 to the shell 3 is reduced.
Optionally, referring to fig. 3, the frame 11 has a bottom wall 112 and a side wall 111 extending from the periphery of the bottom wall 112 in a bending manner, and the side wall 111 is provided with a notch formed by removing material, and the notch is used for avoiding a voice coil lead. The elastic piece 4 is arranged on the outer surface of the side wall 111 of the basin stand, and the elastic piece 4 is clamped between the outer surface of the side wall 111 of the basin stand and the shell 3. Normally, the basin stand 11 and the housing 3 are fixed to each other, and do not move relative to each other, but the transmission of vibration tends to generate a relative movement tendency, which is likely to cause problems such as poor sealing. The elastic piece 4 is arranged between the outer surface of the side wall 111 of the basin stand and the contact surface of the shell 3, so that the side wall 111 of the basin stand and the shell 3 can be isolated from each other, and the vibration effect and the relative movement trend transmitted between the contact surfaces of the side wall 111 and the shell are weakened. Better sealing effect is obtained while vibration is reduced. Compared with gluing sealing, the steps of special gluing and drying are omitted, the problem of poor sealing caused by uneven gluing, colloid shrinkage and the like is avoided, the production efficiency is improved, and the sealing effect is guaranteed. In addition, the elastic member 4 is arranged on the outer surface of the side wall 111 of the basin stand, and is easier to manufacture and install in actual production.
Alternatively, referring to fig. 4 to 5, the elastic member 4 is disposed around the side wall 111 of the tub stand and forms a contour structure with the side wall. In practical application, the elastic part 4 is provided with a material removing opening matched with the notch of the side wall 111 so as to avoid the lead of the voice coil and facilitate the internal airflow circulation of the sound generating device. In addition, the profile modeling structure of elastic component 4 can make elastic component 4 with basin frame 11's cooperation is laminated more, and sealed effect is better, has avoided in the rubber coating sealing mode, because the colloid ages and loses the problem that the sealed effect that viscidity and cause weakens.
Alternatively, referring to fig. 6, the elastic member 4 covers the entire side wall 111 in the height direction of the side wall 111. When setting up elastic component 4, cover it with the position of the high assorted of basin frame lateral wall 111, can increase the area of contact between basin frame lateral wall 111 and the 3 contact surface of casing, elastic component 4 can absorb more the basin frame 11 transmits for the vibration of casing, has transmitted for the vibration of casing also can disperse more, and whole sound generating mechanism's vibration also can reduce greatly. In this embodiment, when the elastic member 4 covers the entire side wall 111 along the height direction of the side wall 111, the elastic member may be set to surround the side wall 111 of the basin stand for a circle, or may be set to form a plurality of vertical bars on the side wall 111 of the basin stand. When the basin frame is arranged to cover the whole side wall 111 along the height direction of the side wall 111 in a circle, the contact surface between the basin frame 11 and the shell 3 can be increased, and the elastic part 4 not only can absorb more vibration conducted by the basin frame 11, but also can ensure that the basin frame 11 is fixedly connected with the shell 3 more firmly. When the elastic members 4 are arranged on the side wall 111 of the basin stand in a plurality of vertical bars and cover the whole side wall 111 along the height direction of the side wall 111, when one vertical bar elastic member 4 falls off or is damaged, other elastic members 4 can continue to absorb the vibration force, and the safety is higher.
Optionally, the elastic member 4 is disposed on an outer surface of the bottom wall 112 of the basin stand 11, and the elastic member 4 is sandwiched between the bottom wall 112 and the housing 3. In one embodiment, the outer surface of the bottom wall 112 of the frame 11 is in contact with the housing 3, the vibration of the frame 11 generated along with the vibration of the voice coil 21 is transmitted to the whole side wall 111 and the bottom wall 112 of the frame 11, and the elastic member 4 is arranged on the bottom wall of the frame 11 to absorb the vibration on the bottom wall of the frame 11, so that the vibration transmitted from the bottom wall 112 of the frame to the housing is weakened.
The vibration reduction effect and the sealing effect can influence the sound production effect of the whole sound production device, and the sound production device can also influence the sound production effect of the whole electronic product if the sound production device is arranged in various electronic products (such as mobile phones, tablet computers and the like). As can be seen from the above embodiments, the elastic members 4 are arranged at different positions on the frame 11, and have different vibration absorption effects, and the arrangement positions and the arrangement number thereof can be specifically combined according to the contact positions and the contact areas of the frame 11 and the housing 3, and the arrangement positions and the arrangement number of the elastic members 4 are not limited in the present invention.
Optionally, the elastic member 4 is made of silicone or rubber. The material of the elastic member 4 may also have an influence on the effect of absorbing vibration, and a material having a certain elasticity may have a better effect of buffering vibration, such as various materials of silica gel, rubber, and the like. The silica gel material has stable chemical property and no combustion, and can be used in various complex environments. The elastic part 4 made of silica gel can obtain better vibration reduction effect and can also improve the adaptability of the sound generating device to the use environment. The rubber material has good elasticity, water resistance, air tightness and excellent bonding performance, and can achieve better sealing and waterproof effects while reducing vibration. Compared with a sealant, the elastic part 4 made of silica gel or rubber has the advantages of ensuring the sealing effect and buffering vibration due to superior material property.
Optionally, the elastic member 4 is injection molded or bonded to the frame 11. The injection molding process has low cost, high production efficiency and good fixing performance, so that the basin frame 11 and the elastic part 4 cannot be broken due to loose connection. The fixing between the elastic element 4 and the basin stand can also adopt other modes, such as adhesion and the like. After the elastic piece 4 is fixedly bonded with the shell 3, the basin stand 11 is more stably fixed with the shell 3, and relative movement is not easy to occur. The elastic piece 4 is bonded with the shell 3, so that the overall appearance of the sounding device is more attractive, and residual marks during gluing and bonding are prevented.
Optionally, after the frame 11 is fixed to the housing 3, the elastic member 4 is elastically deformed. Basin frame 11 with casing 3 is right elastic deformation has been produced through the squeezing action to elastic component 4, can make the sealed effect between basin frame 11 and the casing 3 compacter, prevents perhaps between basin frame 11 and the elastic component 4 casing 3 and elastic component 4 between be connected and take place to drop, influence sound generating mechanism's sound producing effect.
In actual production, the above schemes can be combined according to the situation. For example, the elastic member 4 may be fixed on the frame 11 by injection molding using a silicone material, and the elastic member 4 is fixed to the housing 3 by adhesion. When the flowerpot is installed, the flowerpot frame 11 and the shell 3 elastically deform the elastic piece 4. This embodiment reinforces the connection between the elastic member 4 and the frame as well as the connection between the elastic member 4 and the housing 3. The casing 3 with the basin frame 11 is right after the elastic component 4 produces elastic deformation for whole assembling relation is inseparabler, has both reached the effect that sets up the damping of elastic component 4, has improved again the basin frame 11 with sealing performance between the casing 3. In this embodiment, other combinations may also be adopted, and the present invention is not limited to this.
The invention also provides an electronic device, which comprises an electronic device shell (not shown in the figure) and the sounding device according to any one of the above embodiments, wherein the basin frame 11 of the sounding device is exposed out of the shell 3 of the sounding device. The elastic part 4 is clamped between the shell 3 and the side wall 111 of the basin stand, part of the elastic part 4 is clamped between the bottom wall 112 of the basin stand and the shell of the electronic device, when the voice coil vibrates, the vibration force generated by the basin stand 11 along with the vibration of the voice coil 21 can be transmitted on the whole side wall 111 and the whole bottom wall 112 of the basin stand 11, the elastic part 4 can buffer the vibration effect of the voice coil 21 on the basin stand 11, and the vibration force transmitted by the basin stand 11 and received by the shell 3 of the sound generating device is reduced; the vibration on the bottom wall 112 of the basin stand can be absorbed, the vibration of the basin stand 11 on the shell of the electronic device is buffered, the vibration transmitted to the shell of the electronic device is reduced, and the whole electronic device achieves the vibration reduction effect.
In the embodiments, the differences between the embodiments are mainly described, and different optimization features between the embodiments can be combined to form a better embodiment as long as the differences are not contradictory, and further description is omitted here in view of brevity of the text.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims (9)

1. A sound generating device, comprising:
the magnetic circuit system comprises a basin frame and a magnetic assembly, the magnetic assembly is arranged on the basin frame, and the basin frame is provided with a side wall; the surface of the basin stand is provided with an elastic piece, the elastic piece covers the whole side wall along the height direction of the side wall and surrounds the side wall to form a profiling structure with the side wall;
the vibration assembly comprises a vibrating diaphragm and a voice coil, the vibrating diaphragm is connected with the voice coil, and at least one part of the voice coil is positioned in the magnetic circuit system;
the vibration component and the magnetic circuit system are fixed on the shell, and the elastic component is clamped between the shell and the basin frame.
2. The sound generating apparatus as claimed in claim 1, wherein the elastic member is covered on an outer surface of the side wall, and the elastic member is interposed between the outer surface of the side wall and the housing.
3. The sound generating apparatus as claimed in claim 2, wherein the side wall of the frame is provided with a notch formed by removing material.
4. The sound generating apparatus as claimed in claim 2, wherein the elastic member is disposed on an outer surface of a bottom wall of the frame, the elastic member being interposed between the bottom wall and the housing.
5. The sound-generating apparatus as claimed in claim 1, wherein the elastic member is made of silicone or rubber.
6. The sound generating apparatus as claimed in claim 5, wherein the elastic member is injection molded or bonded to the frame.
7. The sound generating apparatus as claimed in claim 1, wherein the elastic member is elastically deformed after the frame is fixed to the housing.
8. An electronic device, comprising
An electronic device shell and the sound generating device of any one of the claims 1 to 7, wherein the basin stand of the sound generating device is exposed out of the shell of the sound generating device.
9. The electronic device of claim 8,
the elastic piece part is clamped between the bottom wall of the basin stand and the shell of the electronic device.
CN202011425446.0A 2020-12-08 2020-12-08 Sound production device and electronic device Active CN112601160B (en)

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Application Number Priority Date Filing Date Title
CN202011425446.0A CN112601160B (en) 2020-12-08 2020-12-08 Sound production device and electronic device

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Application Number Priority Date Filing Date Title
CN202011425446.0A CN112601160B (en) 2020-12-08 2020-12-08 Sound production device and electronic device

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CN112601160A CN112601160A (en) 2021-04-02
CN112601160B true CN112601160B (en) 2022-08-12

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Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202949558U (en) * 2012-11-02 2013-05-22 瑞声光电科技(常州)有限公司 Vibration energy converter
CN203618117U (en) * 2013-12-11 2014-05-28 歌尔声学股份有限公司 Loudspeaker module
CN204697267U (en) * 2015-05-18 2015-10-07 Tcl通力电子（惠州）有限公司 Fixing structure for horn and sound equipment
CN205123993U (en) * 2015-11-30 2016-03-30 歌尔声学股份有限公司 Loudspeaker
CN205123994U (en) * 2015-12-01 2016-03-30 歌尔声学股份有限公司 Loudspeaker
CN209201326U (en) * 2018-12-20 2019-08-02 瑞声科技(新加坡)有限公司 Microphone device
CN112104935A (en) * 2020-09-29 2020-12-18 瑞声新能源发展(常州)有限公司科教城分公司 Loudspeaker box
CN111970590B (en) * 2020-09-29 2022-07-22 瑞声新能源发展(常州)有限公司科教城分公司 Loudspeaker box and terminal equipment

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