Sound cavity device of novel hearing-aid earphone and earphone
By integrating the rear sound chamber cover, speaker unit and front chamber protective cover, the problem of inconsistent sealing in the existing hearing aid headphone speaker design is solved, and efficient sealing and automated production of the rear sound chamber is achieved, which facilitates mass production and design expansion.
Patent Information
- Application Number
- CN202510160305.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2025-04-15
AI Technical Summary
The speaker design of existing hearing aid headphones has the problem of high cost of dynamic iron horns and inconsistent sealing of dynamic coil horns, which leads to air leakage and howling, affecting the use effect.
By integrating the rear sound chamber cover, speaker unit and front chamber protective cover, the seal consistency of the rear sound chamber is improved, air leakage is avoided, and air outlets are used to adjust the air pressure in the rear sound chamber.
It realizes efficient sealing of the rear sound cavity, avoids air leakage, facilitates mass production management and automation equipment production, reduces defective rates, and expands the scope of design application.
Smart Images
Figure CN119835596A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of earphones, and in particular to a new sound cavity device of a hearing-aid earphone and an earphone. Background Art
[0002] In recent years, with the increasing number of people suffering from ear damage due to aging and war, the demand for hearing aids has increased, and TWS-type headphones tend to be younger, so manufacturers pay more attention to cost control. Speakers in the prior art usually adopt expensive dynamic iron speaker designs. Due to the structural properties of dynamic iron speakers, they have no rear sound cavity and their cost is 5-20 times that of dynamic speakers. Speakers in the prior art also adopt low-cost dynamic speakers, use the whole machine structure to form a rear sound cavity, and seal it by gluing. The disadvantages are: the consistency of gluing and sealing is difficult to control. Once there is air leakage, it will seriously affect the side-hearing effect and howling. There is a technical problem of air leakage. Therefore, in view of this situation, there is an urgent need to develop a new sound cavity device for hearing aids to meet the needs of actual use. Summary of the invention
[0003] In view of this, the present invention aims to address the deficiencies in the prior art, and its main purpose is to provide a new sound cavity device and earphone for hearing aid headphones, which improves the sealing consistency of the rear sound cavity by integrally connecting the rear sound cavity cover, the speaker unit and the front cavity protection cover, avoids air leakage, facilitates mass production control, and facilitates the realization of automated equipment production.
[0004] To achieve the above purpose, the present invention adopts the following technical solutions:
[0005] A new sound cavity device of a hearing aid earphone comprises a rear sound cavity cover, a speaker unit and a front cavity protection cover, wherein the rear sound cavity cover is located behind the speaker unit; the front cavity protection cover is located in front of the speaker unit; the rear sound cavity cover and the speaker unit are enclosed to form a rear sound cavity; an air outlet hole for adjusting the air pressure in the rear sound cavity is provided on the speaker unit, and the air outlet hole is connected to the internal space of the rear sound cavity; the rear sound cavity cover, the speaker unit and the front cavity protection cover are integrally connected.
[0006] As a preferred solution: the speaker unit includes a speaker bracket, a magnet, a coil and a diaphragm, the rear sound cavity cover is located behind the speaker bracket; the front cavity protection cover is located in front of the speaker bracket; the diaphragm is fixed to the front side of the speaker bracket; the magnet is fixed to the rear side of the speaker bracket; the coil is fixed to the rear side of the diaphragm and extends to the position of the magnet.
[0007] As a preferred solution: the speaker bracket includes an integrated connecting portion and a protruding portion, the protruding portion is located behind the connecting portion, and the connecting portion is distributed along the outer circumference of the protruding portion; the air outlet is opened at the center of the protruding portion.
[0008] As a preferred solution: the rear sound cavity cover is sleeved behind the raised portion, and the rear sound cavity is enclosed between the inner side wall of the rear sound cavity cover and the outer side wall of the raised portion.
[0009] As a preferred solution: the connecting portion has an outer edge, a sunken step is formed between the outer edge and the raised portion, and the outer edge is planar; the front side wall of the rear sound cavity cover is planar, and the front side wall of the rear sound cavity cover is in contact with the outer edge.
[0010] As a preferred solution: the speaker bracket is provided with two lead pads, which are symmetrically spaced and distributed on the speaker bracket; and both lead pads are in contact with the speaker bracket.
[0011] As a preferred solution: the rear sound cavity cover is provided with a clearance notch for making way for the lead pads, and the two lead pads are located on the side of the rear sound cavity cover.
[0012] As a preferred solution: the speaker bracket and the front cavity protection cover enclose a receiving cavity, the magnet, the coil and the diaphragm are all located in the receiving cavity, and the speaker bracket and the front cavity protection cover are buckled together.
[0013] As a preferred solution: the front cavity protection cover is in a circular ring shape, and the middle part of the front cavity protection cover protrudes forward to form a boss.
[0014] An earphone comprises the sound cavity device of the novel hearing-aid earphone.
[0015] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical scheme that the sealing consistency of the rear sound cavity is improved by integrally connecting the rear sound cavity cover, the speaker unit and the front cavity protective cover, thereby avoiding air leakage, facilitating mass production control, facilitating the realization of automated equipment production, and simplifying the production of manufacturers; by adopting a new sound cavity device of the hearing aid earphone provided by the present application, more space can be effectively saved, which is convenient for meeting the design of more shapes and has a wide range of applications; the rear sound cavity cover, the speaker unit and the front cavity protective cover are convenient for processing and manufacturing during assembly, and each link can be tested during production, thereby reducing the defective rate.
[0016] In order to more clearly illustrate the structural features and effects of the present invention, it is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 A schematic diagram of the stereoscopic structure of a sound cavity device of a novel hearing aid earphone according to the present invention from a first-view perspective;
[0018] Figure 2 A schematic diagram of the stereoscopic structure of a sound cavity device of a novel hearing aid earphone according to the present invention from a second viewing angle;
[0019] Figure 3 A schematic diagram of the stereoscopic structure of a sound cavity device of a novel hearing aid earphone according to the present invention from a third viewing angle;
[0020] Figure 4 This is an exploded view of a sound cavity device of a novel hearing aid earphone of the present invention;
[0021] Figure 5 This is a schematic diagram of the three-dimensional structure of the sound cavity cover of the present invention;
[0022] Figure 6 This is a schematic diagram of the stereoscopic structure of the speaker bracket of the present invention from a first viewing angle;
[0023] Figure 7 This is a schematic diagram of the stereoscopic structure of the speaker bracket of the present invention from a second viewing angle;
[0024] Figure 8 This is a schematic diagram of the three-dimensional structure of the front cavity protection cover of the present invention;
[0025] Fig. 9 A schematic diagram of the three-dimensional structure of an earphone including the sound cavity device of the present invention;
[0026] Fig.10 The figure is an exploded view of the earphone including the sound cavity device of the present invention.
[0027] Description of the accompanying drawings:
[0028] In the figure: 100, sound cavity device; 10, rear sound cavity cover; 11, clearance gap; 20, speaker unit; 21, speaker bracket; 211, connecting part; 212, outer edge; 213, raised part; 214, air outlet; 215, sunken step; 216, lead pad; 22, magnet; 23, coil; 24, diaphragm; 30, rear sound cavity; 40, front cavity protection cover; 41, boss. DETAILED DESCRIPTION
[0029] The present invention Figures 1 to 10 As shown, a new sound cavity device 100 of a hearing aid earphone includes a rear sound cavity cover 10, a speaker unit 20 and a front cavity protection cover 40, wherein:
[0030] The rear sound cavity cover 10 is located behind the speaker unit 20; the front cavity protection cover 40 is located in front of the speaker unit 20; the rear sound cavity cover 10 and the speaker unit 20 enclose a rear sound cavity 30; the speaker unit 20 is provided with an air outlet 214 for adjusting the air pressure in the rear sound cavity 30, and the air outlet 214 is connected to the internal space of the rear sound cavity 30; the rear sound cavity cover 10, the speaker unit 20 and the front cavity protection cover 40 are integrally connected.
[0031] By integrally connecting the rear sound cavity cover 10, the speaker unit 20 and the front cavity protective cover 40, the sealing consistency of the rear sound cavity 30 is improved, air leakage is avoided, mass production control is facilitated, and automated equipment production is facilitated, which simplifies the production of manufacturers; by adopting a new sound cavity device 100 of a hearing aid earphone provided by the present application, more space can be effectively saved, and it is convenient to meet the design of more shapes and has a wide range of applications; the rear sound cavity cover 10, the speaker unit 20 and the front cavity protective cover 40 are convenient to process and manufacture during assembly, and each link is convenient to test during production, thereby reducing the defective rate.
[0032] The rear sound cavity cover 10, the speaker unit 20 and the front cavity protection cover 40 are integrally connected by assembling and then gluing. The gluing process is simpler, and the speaker unit 20 and the rear sound cavity 30 are combined, which is convenient for automated mass production.
[0033] The rear exhaust of the speaker in the prior art is natural exhaust, and then the rear sound cavity 30 is designed through the whole machine casing. Since the upper and lower shells of the mold assembly design are split structures, it is impossible to achieve mass production sealing consistency. The patent uses the rear sound cavity cover 10, the speaker unit 20 and the front cavity protection cover 40 to be connected in one piece to realize a single unit assembly process, which can effectively solve the mass production leakage problem.
[0034] The speaker unit 20 includes a speaker bracket 21, a magnet 22, a coil 23 and a diaphragm 24. The rear sound cavity cover 10 is located behind the speaker bracket 21; the front cavity protection cover 40 is located in front of the speaker bracket 21; the diaphragm 24 is fixed to the front side of the speaker bracket 21; the magnet 22 is fixed to the rear side of the speaker bracket 21; the coil 23 is fixed to the rear side of the diaphragm 24 and extends to the position of the magnet 22; the overall structure is compact and occupies a small area.
[0035] The speaker bracket 21 includes an integrated connecting portion 211 and a protruding portion 213, wherein the protruding portion 213 is located at the rear of the connecting portion 211, and the connecting portion 211 is distributed along the outer circumference of the protruding portion 213; the air outlet 214 is opened at the center position of the protruding portion 213; by setting the air outlet 214 at the center position of the protruding portion 213, it is convenient to adjust the air pressure of the rear sound cavity 30, thereby improving the adjustment effect; by adopting the connecting portion 211, it is convenient to closely connect the speaker bracket 21 with the rear sound cavity cover 10 and the front cavity protection cover 40.
[0036] The rear sound cavity cover 10 is sleeved behind the raised portion 213 to enclose the rear sound cavity 30 between the inner wall of the rear sound cavity cover 10 and the outer wall of the raised portion 213 ; the raised portion 213 is used to facilitate enclosing the rear sound cavity 30 with the rear sound cavity cover 10 .
[0037] The connecting portion 211 has an outer edge 212, and a sunken step 215 is formed between the outer edge 212 and the raised portion 213, and the outer edge 212 is planar; the front side wall of the rear sound cavity cover 10 is planar, and the front side wall of the rear sound cavity cover 10 abuts against the outer edge 212; by setting the outer edge 212 to be planar and the front side wall of the rear sound cavity cover 10 to be planar, it is convenient to improve the stability when the front side wall of the rear sound cavity cover 10 abuts against the outer edge 212, ensure the tightness of the connection, and improve the airtightness.
[0038] The speaker bracket 21 is provided with two lead pads 216 , which are symmetrically spaced and distributed on the speaker bracket 21 ; both lead pads 216 are in contact with the speaker bracket 21 ; the use of the lead pads 216 facilitates the welding of the speaker leads.
[0039] The rear sound cavity cover 10 is provided with a clearance notch 11 for making way for the lead pads 216 . The two lead pads 216 are located on the side of the rear sound cavity cover 10 . Position interference is avoided by providing the clearance notch 11 .
[0040] By adopting the lead pads 216, two lead pads 216 are located beside the rear sound cavity cover 10, so that the speaker lead does not pass through the rear sound cavity 30, which can solve the technical problem of air leakage caused by the movement of the speaker lead.
[0041] The speaker bracket 21 and the front cavity protection cover 40 enclose a receiving cavity, and the magnet 22, the coil 23 and the diaphragm 24 are all located in the receiving cavity. The speaker bracket 21 and the front cavity protection cover 40 are buckled together; the overall design is compact and occupies little space.
[0042] The front cavity protection cover 40 is annular, and the middle portion of the front cavity protection cover 40 protrudes forward to form a boss 41 .
[0043] An earphone includes a sound cavity device 100 of the novel hearing-aid earphone.
[0044] The method and principle of using the sound cavity device of the new hearing aid earphone are as follows:
[0045] The rear exhaust of the speaker in the prior art is natural exhaust, and then the rear sound cavity is designed through the whole machine casing. Since the upper and lower shells in the mold assembly design are split structures, it is impossible to achieve mass production sealing consistency. The patent utilizes the rear sound cavity cover, the speaker unit and the front cavity protection cover to be connected in one piece to realize a single-body assembly process, which can effectively solve the problem of air leakage in mass production; the rear sound cavity cover, the speaker unit and the front cavity protection cover are connected in one piece by assembling and then gluing, and the gluing process is simpler, realizing the combination of the speaker unit and the rear sound cavity, which is convenient for automated mass production.
[0046] The design focus of the present invention is that the sealing consistency of the rear sound cavity is improved by integrally connecting the rear sound cavity cover, the speaker unit and the front cavity protective cover, air leakage is avoided, mass production control is facilitated, and automated equipment production is facilitated, thereby simplifying the production of manufacturers; by adopting a new sound cavity device of the hearing aid earphone provided by the present application, more space can be effectively saved, and it is convenient to meet the design of more shapes and has a wide range of applications; the rear sound cavity cover, the speaker unit and the front cavity protective cover are convenient to process and manufacture during assembly, and each link can be tested during production, thereby reducing the defective rate.
[0047] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.
Claims
1. A new sound cavity device for hearing aid earphones, characterized in that: It includes a rear sound cavity cover, a speaker unit and a front cavity protection cover, wherein the rear sound cavity cover is located behind the speaker unit; the front cavity protection cover is located in front of the speaker unit; the rear sound cavity cover and the speaker unit form a rear sound cavity; the speaker unit is provided with an air outlet for adjusting the air pressure in the rear sound cavity, and the air outlet is connected to the internal space of the rear sound cavity; the rear sound cavity cover, the speaker unit and the front cavity protection cover are connected in an integral manner.
2. The sound cavity device of a new hearing aid earphone according to claim 1, characterized in that: The speaker unit includes a speaker bracket, a magnet, a coil and a diaphragm. The rear sound cavity cover is located behind the speaker bracket; the front cavity protection cover is located in front of the speaker bracket; the diaphragm is fixed to the front side of the speaker bracket; the magnet is fixed to the rear side of the speaker bracket; the coil is fixed to the rear side of the diaphragm and extends to the position of the magnet.
3. The sound cavity device of a new hearing aid earphone according to claim 2, characterized in that: The speaker bracket includes an integrated connecting portion and a raised portion, wherein the raised portion is located behind the connecting portion and is distributed along the outer circumference of the raised portion; and the air outlet is arranged at the center of the raised portion.
4. The sound cavity device of the new hearing aid earphone according to claim 3 is characterized in that: The rear sound cavity cover is sleeved behind the raised portion, and the rear sound cavity is enclosed between the inner side wall of the rear sound cavity cover and the outer side wall of the raised portion.
5. The sound cavity device of the novel hearing aid earphone according to claim 3 is characterized in that: The connecting portion has an outer edge, a sunken step is formed between the outer edge and the raised portion, and the outer edge is planar; the front side wall of the rear sound cavity cover is planar, and the front side wall of the rear sound cavity cover is in contact with the outer edge.
6. The sound cavity device of a new hearing aid earphone according to claim 2, characterized in that: The speaker bracket is provided with two lead pads, which are symmetrically distributed on the speaker bracket at intervals; and both lead pads are fitted with the speaker bracket.
7. The sound cavity device of the novel hearing aid earphone according to claim 6, characterized in that: The rear sound cavity cover is provided with a making way notch for making way for the lead pads, and the two lead pads are located on the side of the rear sound cavity cover.
8. The sound cavity device of a new hearing aid earphone according to claim 2, characterized in that: The speaker bracket and the front cavity protection cover enclose a receiving cavity, and the magnet, the coil and the diaphragm are all located in the receiving cavity. The speaker bracket and the front cavity protection cover are buckled together.
9. The sound cavity device of a new hearing aid earphone according to claim 2, characterized in that: The front cavity protection cover is in a circular ring shape, and the middle part of the front cavity protection cover protrudes forward to form a boss.
10. An earphone, characterized in that: A sound cavity device comprising a novel hearing aid earphone as claimed in any one of claims 1 to 9.