Sound production device

Abstract

The utility model relates to the technical field of electroacoustics provides a kind of sounder, it includes the shell with accommodating space and is equipped with sound hole and installs in the sounder monomer of shell, sounder still includes the supporting piece installed in accommodating space, supporting piece is fixed to shell and will be separated into first cavity and second cavity with accommodating space, supporting piece is equipped with multiple damping holes on it, damping hole will be communicated with first cavity and second cavity, sounder monomer is located in first cavity and is fixed to supporting piece, first cavity is communicated with sound hole, and second cavity is filled with sound-absorbing material;Sounder still includes the boss by the inside of shell protruding extension and formed in second cavity, supporting piece is supported on boss. Compared with prior art, the utility model not only plays the supporting function of sounder monomer, but also is conducive to forming second cavity for powder, improves the good acoustic effect of adjustment.

Description

Technical Field

[0001] This utility model relates to the field of electroacoustic technology, and in particular to a sound-generating device. Background Technology

[0002] With the advent of the mobile internet era, the number of smart mobile devices is constantly increasing. Among these mobile devices, mobile phones are undoubtedly the most common and portable mobile terminal devices. Currently, mobile phones have extremely diverse functions, one of which is high-quality music playback. Therefore, sound-producing devices used for playing sound are widely used in today's smart mobile devices.

[0003] The sound-generating device of the related technology includes a lower cover, an upper cover fixed to the lower cover, and a sound-generating unit fixed to the upper cover. The upper cover has a receiving space, and the sound-generating unit is disposed in the receiving space. The sound-generating unit includes a frame, a vibration system fixed to the frame, and a magnetic circuit system for driving the vibration system to vibrate and generate sound. The frame is fixed to the inner periphery of the lower cover or the upper cover.

[0004] However, in the sound-generating devices described in the related technologies, since the frame is fixed to the inner circumference of the lower or upper cover, the side of the sound-generating unit near the rear cover is suspended. During the process of the sound-generating unit vibrating and generating sound, it is easy to cause poor anti-drop performance and insufficient reliability of the sound-generating unit.

[0005] Therefore, it is necessary to provide a new sound-generating device to solve the above-mentioned technical problems. Utility Model Content

[0006] The purpose of this invention is to provide a sound-generating device that not only supports and prevents the sound-generating unit from falling, but also facilitates the formation of a second cavity for powder canning, thereby improving and adjusting the acoustic effect.

[0007] To achieve the above objectives, this utility model provides a sound-generating device, which includes a housing having a receiving space and a sound outlet, and a sound-generating unit installed in the housing.

[0008] The sound-generating device further includes a support member installed in the receiving space. The support member is fixed to the housing and divides the receiving space into a first cavity and a second cavity. The support member has a plurality of damping holes that pass through it. The damping holes connect the first cavity and the second cavity. The sound-generating unit is located in the first cavity and is fixed to the support member. The first cavity is connected to the sound outlet. The second cavity is filled with sound-absorbing material.

[0009] The sound-generating device further includes a boss that protrudes from the inside of the housing and is formed in the second cavity, and the support member abuts against and supports the boss.

[0010] Preferably, the support member includes a support member body and a fixing arm that extends from the edge of the support member body; the sound-generating unit is abutted and fixed to the support member body, the damping hole is formed in the support member body, and the fixing arm is fixed to the housing; the support member body abuts and supports the boss.

[0011] Preferably, the support body includes two long sides arranged opposite each other and two short sides connecting the two long sides and arranged opposite each other. The housing is provided with two protrusions at each long side and each short side, and each long side and each short side abuts and is supported by their respective two protrusions.

[0012] Preferably, the fixing arm includes a first fixing arm that bends and extends from each short side toward the sound-generating unit and a second fixing arm that bends and extends from each long side toward the sound-generating unit. The sound-generating unit includes a magnetic circuit system. The distance between the magnetic circuit system and the housing at each long side is smaller than the distance between the magnetic circuit system and the housing at each short side. Each first fixing arm is fixed to the housing and is perpendicular to the support body. Each second fixing arm includes a first connecting portion formed by bending and extending from the support body toward the sound-generating unit, a second connecting portion formed by bending and extending from the first connecting portion toward the support body, and a third connecting portion formed by bending and extending from the second connecting portion toward the sound-generating unit. The third connecting portion is fixed to the housing and is perpendicular to the support body.

[0013] Preferably, the support body, the damping hole, and the fixing arm are integrally stamped steel sheet structures.

[0014] Preferably, the housing includes a rear cover, a front cover that covers the rear cover and together forms the receiving space, the sound-emitting hole is opened in the front cover, and the first fixing arm and the second fixing arm are both fixed to the rear cover.

[0015] Preferably, the rear cover includes a bottom wall that is directly opposite the sound-emitting unit and a side wall that extends from the periphery of the bottom wall toward the front cover. The first fixing arm and the second fixing arm are both fixed to the side wall. The boss is formed on the side wall near the sound-emitting unit, and the support member is fixedly disposed on the side of the boss near the front cover.

[0016] Preferably, the support body includes a support plate and two extension plates extending in opposite directions from opposite sides of the support plate. The sound-generating unit is supported and fixed on the side of the support plate away from the bottom wall. The extension plates are suspended in the air, and the damping holes are formed in the extension plates.

[0017] Preferably, the housing further includes a powder filling hole extending therethrough; the sound-generating device further includes a breathable isolation component, which is fixedly covered on the side of the powder filling hole away from the sound-generating unit, and the sound-absorbing material is filled into the second cavity by the powder filling hole.

[0018] Preferably, the sound-generating device further includes a breathable and waterproof component, which is fixed to the housing and covers the sound outlet.

[0019] Preferably, the sound-generating device further includes a waterproof gasket, which is fixed to the outside of the housing and surrounds the sound outlet, and the breathable and waterproof component is supported and fixed to the waterproof gasket.

[0020] Compared with the prior art, the sound-generating device of this utility model includes a sound-generating unit installed inside the housing; the sound-generating device also includes a support member installed in the receiving space, which is fixed to the housing and divides the receiving space into a first cavity and a second cavity; the support member has multiple damping holes that pass through it, which connect the first cavity and the second cavity; the sound-generating unit is located in the first cavity and is fixed to the support member; the first cavity is connected to the sound outlet; the second cavity is filled with sound-absorbing material; the sound-generating device also includes a boss that protrudes from the inside of the housing and forms in the second cavity, and the support member is supported by the boss; this allows the support member to support the sound-generating unit and prevent it from falling, and also facilitates the formation of a second cavity with the housing for powder filling, improving the acoustic effect and further enhancing the acoustic performance of the sound-generating device. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0022] Figure 1 A three-dimensional structural schematic diagram of the sound-generating device provided in an embodiment of this utility model;

[0023] Figure 2 An exploded perspective view of the sound-generating device provided in an embodiment of this utility model;

[0024] Figure 3 for Figure 1 AA-line sectional view;

[0025] Figure 4 for Figure 1 BB line section view;

[0026] Figure 5A schematic diagram of the structure of the support member for the sound-generating device provided in an embodiment of this utility model;

[0027] Figure 6 A schematic diagram of the structure of the back cover of the sound-generating device provided in an embodiment of this utility model;

[0028] Figure 7 This is a schematic diagram of the structure of the sound-generating unit of the sound-generating device provided in an embodiment of the present invention.

[0029] Among them, 100, sound-generating device; 1, housing; 101, front cover; 102, rear cover; 1021, bottom wall; 1022, side wall; 103, sound outlet; 104, receiving space; 1041, first cavity; 1042, second cavity; 3, sound-generating unit; 31, magnetic circuit system; 4, support component; 41, support component body; 411, support plate; 412, extension plate; 413, long side; 414, short side; 42, damping hole; 43, fixing arm; 431, first fixing arm; 432, second fixing arm; 4321, first connecting part; 4322, second connecting part; 4323, third connecting part; 5, powder filling hole; 6, breathable isolation component; 7, conductive component; 8, plastic component; 9, boss; 10, breathable and waterproof component; 11, waterproof gasket; 12, adhesive layer. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0031] Combination Figures 1 to 7 As shown, this embodiment of the present invention provides a sound-generating device 100, which includes a housing 1 having a receiving space 104 and a sound outlet 103, and a sound-generating unit 3 installed within the housing 1. The housing 1 is used to enclose the receiving space 104, and installing the sound-generating unit 3 within the receiving space 104 can save installation space and facilitate the improvement of acoustic performance.

[0032] The sound-generating device 100 further includes a support member 4 installed within the receiving space 104. The support member 4 is fixed to the housing 1 and divides the receiving space 104 into a first cavity 1041 and a second cavity 1042. The support member 4 has a plurality of damping holes 42 extending through it, which connect the first cavity 1041 and the second cavity 1042. The sound-generating unit 3 is located within the first cavity 1041 and is fixed to the support member 4. The first cavity is connected to the sound outlet 103. The second cavity 1042 is filled with sound-absorbing material. By providing damping holes 42 on the support member 4, the acoustic impedance of the second cavity 1042 can be increased and the sound-absorbing material can be prevented from entering the first cavity 1041, thereby improving the acoustic effect of the sound-generating device 100.

[0033] The sound-generating device 100 further includes a boss 9 extending from the inner side of the housing 1 and forming within the second cavity 1042, with the support member 4 abutting and supporting the boss 9. This allows the support member 4 to support the sound-generating unit 3 and prevent it from falling, and also facilitates the formation of the second cavity 1042 for powder dispensing with the housing 1, improving the acoustic effect of adjusting the first cavity 1041 and the second cavity 1042, and further enhancing the acoustic performance of the sound-generating device 100.

[0034] In this embodiment, the support member 4 includes a support member body 41 and two fixing arms 43 extending from the edge of the support member body 41. The sound-generating unit 3 is abutted and fixed to the support member body 41, the damping hole 42 is formed in the support member body 41, the fixing arms 43 are fixed to the housing 1, and the support member body 41 abuts and supports the boss 9. By fixing the support member 4 to the inside of the housing 1 with the fixing arms 43, the fixing performance between the support member 4 and the housing 1 can be improved, thereby improving the support effect of the sound-generating unit 3. Optionally, two bosses 9 are provided at intervals along the relatively short axis of the sound-generating device 3, and the fixing arms 43 are spaced between the two bosses 9 to improve the support stability of the support member body 41.

[0035] In this embodiment, the support body 41 includes two long sides 413 arranged opposite each other and two short sides 414 connecting the two long sides 413 and arranged opposite each other. The housing 1 is provided with two protrusions 9 at each long side 413 and each short side 414, and each long side 413 and each short side 414 abuts and is supported by its corresponding two protrusions 9. By providing two protrusions 9, the supporting effect of the support member 4 can be further improved.

[0036] In this embodiment, the fixing arm 43 includes a first fixing arm 431 that bends and extends from each short side 414 toward the sound-generating unit 3 and a second fixing arm 432 that bends and extends from each long side 413 toward the sound-generating unit 3. The sound-generating unit 3 includes a magnetic circuit system 31. The distance between the magnetic circuit system 31 and the housing 1 at each long side 413 is smaller than the distance between the magnetic circuit system 31 and the housing 1 at each short side 414. Each first fixing arm 431 is fixed to the housing 1 and is perpendicular to the support body 41. By setting the first fixing arm 431 and the second fixing arm 432 on the short side 414 and the long side 413 respectively, and fixing the first fixing arm 431 and the second fixing arm 432 to the housing 1, the fixed contact area between the first fixing arm 431, the second fixing arm 432 and the housing 1 can be increased, thereby further improving the fixing performance of the support body 41.

[0037] Specifically, each of the second fixed arms 432 includes a first connecting portion 4321 formed by bending and extending the support body 41 away from the sound-generating unit 3, a second connecting portion 4322 formed by bending and extending the first connecting portion 4321 away from the support body 41, and a third connecting portion 4323 formed by bending and extending the second connecting portion 4322 towards the sound-generating unit 3; the third connecting portion 4323 is fixed to the housing 1 and is arranged perpendicular to the support body 41. By making the second fixed arm 432 into a bent shape with the first connecting portion 4321 in the opposite direction, the bending space can be increased, the first connecting portion 4321 can be prevented from abutting against the sound-generating unit 3, and the vibration space of the sound-generating unit 3 can be increased. At the same time, the direct bending space of the second fixed arm 432 is insufficient, so such a reverse bending is required; secondly, the three-dimensional structure of the short side 414 with such a reverse bending can also ensure the structural strength of the support body 41.

[0038] Optionally, the first fixing arm 431 and the second fixing arm 432 are fixedly connected to the side wall 1022 by welding, and the welding fixation effect is good.

[0039] In this embodiment, the support body 41, the damping hole 42, and the fixing arm 43 are integrally stamped steel sheet structures. The integrally stamped structure is easy to manufacture, has high structural strength, and provides good support.

[0040] In this embodiment, the rear cover 102 includes a bottom wall 1021 directly opposite the sound-generating unit 3 and a side wall 1022 extending from the periphery of the bottom wall 1021 toward the front cover 101. The first fixing arm 431 and the second fixing arm 432 are both fixed to the side wall 1022. The boss 9 is formed on the side of the side wall 1022 near the sound-generating unit 3, and the support member 4 is fixedly disposed on the side of the boss 9 near the front cover 101. This improves the fixing performance of the support member 4, resulting in good anti-fall effect for the sound-generating unit 3. Optionally, the boss 9 extends protruding from the side near the bottom wall 1021 toward a direction away from it. The cross-section of the boss 9 along the vibration direction perpendicular to the sound-generating unit 3 is a triangular structure, which provides structural stability and good support.

[0041] In this embodiment, the support body 41, the damping hole 42, the first fixing arm 431, and the second fixing arm 432 are integrally stamped steel sheet structures. The integrally stamped structure is easy to manufacture, has high structural strength, and provides good support.

[0042] In this embodiment, the support body 41 includes a support plate 411 and two extension plates 412 extending in opposite directions from opposite sides of the support plate 411. The sound-generating unit 3 is supported and fixed on the side of the support plate 411 away from the bottom wall 1021. The extension plates 412 are suspended, and the damping holes 42 are formed in the extension plates 412. The two first fixing arms 431 are formed by bending and extending the two extension plates 412 away from each other, and the two second fixing arms 432 are formed by bending the other opposite sides of the support plate 411. The support plate 411 is used to install and fix the sound-generating unit 3, and the two first fixing arms 431 and two second fixing arms 432 are used for fixation, improving the fixing effect of the support plate 411.

[0043] In this embodiment, the housing 1 further includes a powder filling hole 5 extending through it; the sound-generating device 100 also includes a breathable insulating member 6, which is fixedly attached to the side of the powder filling hole 5 away from the sound-generating unit 3, and the sound-absorbing material is filled into the second cavity 1042 through the powder filling hole 5. The powder filling hole 5 is used to achieve pressure relief balance, acoustic optimization, and reduction of resonance. The breathable insulating member 6, installed on the powder filling hole 5, provides waterproof and dustproof protection.

[0044] In this embodiment, the sound-generating device 100 further includes a conductive element 7. One end of the conductive element 7 is connected to the sound-generating unit 3, and the other end of the conductive element 7 extends to the outside of the front cover 101. The conductive element 7 is used to connect to an external power source and supply power to the sound-generating unit 3, so that the sound-generating unit 3 vibrates and generates sound when energized. Optionally, the conductive element 7 can be a PFC (Flexible Printed Circuit), which has good conductivity and is easy to install.

[0045] In this embodiment, the sound-generating device 100 further includes a plastic component 8, which is fixed to the outer sides of the rear cover 102 and the front cover 101, respectively. The conductive component 7 extends through the plastic component 8. This improves the fixing effect between the rear cover 102 and the front cover 101, and also ensures that the conductive component 7 is well assembled and fixed.

[0046] In this embodiment, the sound-generating device 100 further includes a breathable and waterproof component 10, which is fixed to the housing 1 and covers the sound outlet 103. This achieves both waterproofing and breathable sound generation; the breathability ensures natural and stable sound quality, while the waterproofing and dustproofing protect internal components, ultimately resulting in good sound quality and extended lifespan.

[0047] In this embodiment, the sound-generating device 100 further includes a waterproof gasket 11, which is fixed to the outside of the housing 1 and surrounds the sound outlet 103. The breathable and waterproof component 10 is supported and fixed to the waterproof gasket 11. The waterproof gasket 11 increases the distance between the breathable and waterproof component 10 and the sound-generating unit 3, providing effective vibration space for the sound-generating unit 3 and improving reliability.

[0048] In this embodiment, the sound-generating device 100 also includes an adhesive layer 12, which is fixed between the support member 4 and the sound-generating unit 3 by adhesive, thereby improving the fixing effect of the sound-generating unit 3.

[0049] Compared with the prior art, the sound-generating device of this utility model includes a sound-generating unit installed inside the housing; the sound-generating device also includes a support member installed in the receiving space, which is fixed to the housing and divides the receiving space into a first cavity and a second cavity; the support member has multiple damping holes that pass through it, which connect the first cavity and the second cavity; the sound-generating unit is located in the first cavity and is fixed to the support member; the first cavity is connected to the sound outlet; the second cavity is filled with sound-absorbing material; the sound-generating device also includes a boss that protrudes from the inside of the housing and forms in the second cavity, and the support member is supported by the boss; this allows the support member to support the sound-generating unit and prevent it from falling, and also facilitates the formation of a second cavity with the housing for powder filling, improving the acoustic effect and further enhancing the acoustic performance of the sound-generating device.

[0050] The above description is merely an embodiment of this utility model. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of this utility model, but these improvements all fall within the protection scope of this utility model.

Claims

1. A sound-generating device, comprising a housing having a receiving space and a sound outlet, and a sound-generating unit installed within the housing, characterized in that, The sound-generating device further includes a support member installed in the receiving space. The support member is fixed to the housing and divides the receiving space into a first cavity and a second cavity. The support member has a plurality of damping holes that pass through it. The damping holes connect the first cavity and the second cavity. The sound-generating unit is located in the first cavity and is fixed to the support member. The first cavity is connected to the sound outlet. The second cavity is filled with sound-absorbing material. The sound-generating device further includes a boss that protrudes from the inside of the housing and is formed in the second cavity, and the support member abuts against and supports the boss.

2. The sound-generating device according to claim 1, characterized in that, The support member includes a support member body and a fixing arm that extends from the edge of the support member body; the sound-generating unit is abutted and fixed to the support member body, the damping hole is opened in the support member body, and the fixing arm is fixed to the housing; the support member body abuts and is supported by the boss.

3. The sound-generating device according to claim 2, characterized in that, The support body includes two long sides arranged opposite each other and two short sides connecting the two long sides and arranged opposite each other. The housing is provided with two protrusions at each long side and each short side, and each long side and each short side abuts and is supported by their respective two protrusions.

4. The sound-generating device according to claim 3, characterized in that, The fixing arm includes a first fixing arm that bends and extends from each short side toward the sound-generating unit and a second fixing arm that bends and extends from each long side toward the sound-generating unit. The sound-generating unit includes a magnetic circuit system. The distance between the magnetic circuit system and the housing at each long side is smaller than the distance between the magnetic circuit system and the housing at each short side. Each first fixing arm is fixed to the housing and is perpendicular to the support body. Each second fixing arm includes a first connecting portion formed by bending and extending from the support body toward the sound-generating unit, a second connecting portion formed by bending and extending from the first connecting portion toward the support body, and a third connecting portion formed by bending and extending from the second connecting portion toward the sound-generating unit. The third connecting portion is fixed to the housing and is perpendicular to the support body.

5. The sound-generating device according to claim 2, characterized in that, The support body, the damping hole, and the fixing arm are integrally stamped steel sheet structures.

6. The sound-generating device according to claim 4, characterized in that, The housing includes a rear cover and a front cover that covers the rear cover and together form the receiving space. The sound-emitting hole is opened in the front cover, and the first fixing arm and the second fixing arm are both fixed to the rear cover.

7. The sound-generating device according to claim 6, characterized in that, The rear cover includes a bottom wall that is directly opposite the sound-emitting unit and a side wall that extends from the periphery of the bottom wall toward the front cover. The first fixing arm and the second fixing arm are both fixed to the side wall. The boss is formed on the side wall near the sound-emitting unit, and the support is fixedly disposed on the side of the boss near the front cover.

8. The sound-generating device according to claim 7, characterized in that, The support body includes a support plate and two extension plates extending in opposite directions from opposite sides of the support plate. The sound-generating unit is supported and fixed on the side of the support plate away from the bottom wall. The extension plates are suspended in the air, and the damping holes are formed in the extension plates.

9. The sound-generating device according to claim 1, characterized in that, The housing also includes a powder filling hole extending through it; the sound-generating device also includes a breathable isolation component, which is fixed to the side of the powder filling hole away from the sound-generating unit, and the sound-absorbing material is filled into the second cavity through the powder filling hole.

10. The sound-generating device according to claim 1, characterized in that, The sound-generating device also includes a breathable and waterproof component, which is fixed to the housing and covers the sound outlet.

11. The sound-generating device according to claim 10, characterized in that, The sound-generating device also includes a waterproof gasket, which is fixed to the outside of the housing and surrounds the sound outlet. The breathable and waterproof component is supported and fixed to the waterproof gasket.

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