Waterproof structure

Abstract

The utility model discloses a waterproof structure, which is applied to a back-of-ear hearing aid and comprises a shell, a button assembly and a sealing assembly. The shell comprises a first shell wall and a second shell wall, the first shell wall and the second shell wall are enclosed to form a mounting cavity, and the first shell wall is provided with a mounting hole and a sound receiving hole which are communicated with the mounting cavity. And the button assembly penetrates through the mounting hole. The sealing assembly comprises a first sealing element, a second sealing element and a waterproof net, the first sealing element blocks a gap between the button structure and the mounting hole, the second sealing element blocks a gap between the first shell wall and the second shell wall, and the waterproof net covers the sound receiving hole. The utility model provides a waterproof structure of a back-of-ear hearing aid, which reduces the probability that water enters the back-of-ear hearing aid and improves the durability of the back-of-ear hearing aid.

Description

Technical Field

[0001] The utility model relates to the field of hearing aids, in particular to a waterproof structure. Background Art

[0002] A hearing aid is an electronic device primarily used to improve the hearing of those with hearing impairments, helping them better perceive and understand sound. It contains components such as a circuit board assembly, a receiver, and a speaker. The receiver collects sound, converts it into an electrical signal, amplifies it, and then transmits it to the ear through the speaker, enhancing the sound and helping those with hearing impairments improve their hearing and communication skills.

[0003] The outer surface of the BTE hearing aid is provided with a structure for controlling the hearing aid components, as well as a cavity for receiving and releasing sound. Therefore, when the hearing aid is in a humid environment or in water, water can easily enter and damage the internal structure of the BTE hearing aid. Utility Model Content

[0004] The main purpose of the utility model is to provide a waterproof structure, which is applied to a behind-the-ear hearing aid, and aims to provide a behind-the-ear hearing aid that is waterproof in many aspects.

[0005] To achieve the above-mentioned purpose, the present invention proposes a waterproof structure, which is applied to a waterproof structure. The waterproof structure includes:

[0006] A housing, the housing comprising a first housing wall and a second housing wall, the first housing wall and the second housing wall enclosing a mounting cavity, the first housing wall being provided with a mounting hole and a sound receiving hole communicating with the mounting cavity;

[0007] a button assembly, the button assembly being passed through the mounting hole; and

[0008] A sealing assembly, comprising a first sealing member, a second sealing member and a waterproof net, wherein the first sealing member blocks the gap between the button assembly and the mounting hole, the second sealing member blocks the gap between the first shell wall and the second shell wall, and the waterproof net covers the sound receiving hole.

[0009] Optionally, the button component includes:

[0010] A button seat, the button seat is connected to the mounting hole and is provided with a sliding groove;

[0011] A button is slidably connected to the sliding groove, the first sealing member is arranged in the sliding groove, and the button is connected to the first sealing member.

[0012] Optionally, the waterproof structure also includes a circuit board assembly, which is arranged in the installation cavity, one side of the circuit board assembly is connected to the first shell wall in a conformal manner, and the other side of the circuit board assembly is connected to the second shell wall in a conformal manner, and the side of the button assembly located in the installation cavity is connected to the circuit board assembly.

[0013] Optionally, the circuit board assembly includes a mounting seat and a circuit board disposed in the mounting seat, and the mounting seat is disposed in the mounting cavity.

[0014] Optionally, the shell is provided with a positioning groove, the mounting seat is provided with a base plate, the base plate is connected to the positioning groove, the base plate is provided with a positioning column, the positioning column extends parallel to the base plate, the circuit board is provided with a positioning hole, and the circuit board is mounted on the base plate through the positioning column and the positioning hole.

[0015] Optionally, the mounting base is further provided with a bracket, the bracket is connected to the base plate, the positioning column is connected to the bracket, the bracket and the circuit board separate the mounting cavity to form a first cavity and a second cavity, the first cavity is used to install a battery, and the second cavity is used to install a speaker and a receiver.

[0016] Optionally, the bracket includes:

[0017] a partition, the partition being connected to the bottom plate and spaced apart from the circuit board assembly;

[0018] an enclosure, the enclosure being connected to the partition, the enclosure, the partition, and the bottom plate enclosing together to form the first cavity, and the enclosure and the shell enclosing together to form the second cavity; and

[0019] A connecting rod is disposed in the second cavity and is connected to the enclosure plate and the bottom plate.

[0020] Optionally, the second shell wall is provided with a sealing groove, the first shell and the sealing groove are enclosed to form a sealing cavity, and the second sealing member is provided in the sealing cavity.

[0021] Optionally, the second shell wall is provided with a charging hole, and the waterproof structure further includes a charging terminal and a third sealing member, the charging terminal is passed through the charging hole, and the third sealing member blocks the gap between the charging terminal and the charging hole.

[0022] Optionally, the shell is provided with an earphone hole, and the waterproof structure further includes an earphone terminal and a fourth sealing member, the earphone terminal is provided through the earphone hole, and the fourth sealing member blocks the gap between the earphone terminal and the earphone hole.

[0023] The waterproof structure provided by the present application includes a shell, a button assembly and a sealing assembly. The shell is composed of a first shell wall and a second shell wall, and the first shell wall and the second shell wall enclose an installation cavity. The button assembly is installed on the installation hole of the first shell wall. The first shell wall is also provided with a sound receiving hole, which can collect the sound transmitted to the surrounding area of the behind-the-ear hearing aid. It can be understood that when the first shell wall and the second shell wall are installed together, there is a gap between the two. As the button assembly is a movable structure, the relative movement between the button and the first shell wall will also produce a gap. The present application also provides a sealing assembly, which includes a first seal, a second seal and a waterproof net. The first seal blocks the gap between the button assembly and the installation hole, the second seal blocks the gap between the first shell wall and the second shell wall, and the waterproof net covers the sound receiving hole. Through this solution, the installation cavity is in a closed space, which can improve the waterproof performance of the behind-the-ear hearing aid. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0025] Figure 1 A schematic structural diagram of a waterproof structure provided by an embodiment of the present utility model;

[0026] Figure 2 for Figure 1 An exploded schematic diagram of the waterproof structure shown;

[0027] Figure 3 for Figure 2 Another angle diagram of the waterproof structure shown;

[0028] Figure 4 for Figure 1 A side view of the waterproof structure shown;

[0029] Figure 5 for Figure 4 A sectional view of the waterproof structure shown along section line III I I;

[0030] Figure 6 for Figure 4 A partial cross-sectional view of the button assembly of the waterproof structure shown;

[0031] Figure 7 for Figure 1 A schematic structural diagram of the first shell wall of the waterproof structure shown;

[0032] Figure 8 for Figure 7 A sectional view of the first shell wall along section line II II II is shown;

[0033] Figure 9 for Figure 1 A schematic structural diagram of the second shell wall of the waterproof structure shown;

[0034] Figure 10 for Figure 9 A sectional view of the second shell wall along the sectional line IV-IV is shown;

[0035] Figure 11 for Figure 5 An enlarged view of the charging hole structure shown in part A;

[0036] Figure 12 for Figure 5 An enlarged view of the headphone jack structure shown in part B;

[0037] Figure 13 This is a schematic structural diagram of the charging terminal of the present invention.

[0038] Description of Figure Numbers:

[0039]

[0040]

[0041] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0043] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0044] In addition, the descriptions of "first," "second," etc. in this utility model are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0045] See Figure 1 and Figure 2 , an embodiment of the present application provides a waterproof structure. The waterproof structure includes a shell 1, a button assembly 4 and a sealing assembly. The shell 1 includes a first shell wall 11 and a second shell wall 12, the first shell wall 11 and the second shell wall 12 enclose a mounting cavity 13, and the first shell wall 11 is provided with a mounting hole 111 and a sound receiving hole 112 connected to the mounting cavity 13. The button assembly 4 passes through the mounting hole 111. The sealing assembly includes a first sealing member 43, a second sealing member and a waterproof net, the first sealing member 43 blocks the gap between the button 41 structure and the mounting hole 111, the second sealing member blocks the gap between the first shell wall 11 and the second shell wall 12, and the waterproof net covers the sound receiving hole 112.

[0046] In this embodiment, the housing 1 includes a first housing wall 11 and a second housing wall 12. The first housing wall 11 is connected to the second housing wall 12 to enclose a mounting cavity 13. The first housing wall 11 is provided with a mounting hole 111, so that when the button assembly 4 is installed in the mounting hole 111, one side of the button assembly 4 is located outside the first housing wall 11 and the other side is located inside the mounting cavity 13. There is a gap between the hole wall of the mounting hole 111 and the button assembly 4 to facilitate the movement of the button assembly 4. The first sealing member 43 is made of a material such as silicone, rubber, or viscose, and is provided between the hole wall of the mounting hole 111 and the button assembly 4 so that the gap is blocked by the first sealing member 43. As a result, no gap will appear when the button 41 moves or moves relative to the first housing wall 11. The waterproof mesh is a metal mesh with a high pore density ratio. The waterproof mesh is connected to the inner wall of the first housing wall 11 and covers the sound receiving hole 112. The waterproof mesh allows sound to be transmitted to the mounting cavity 13 through vibration, but it is difficult for water to enter the mounting cavity 13 through the waterproof mesh. The first shell wall 11 and the second shell wall 12 are both cover-like structures. The edges of the two cover-like structures are connected together to form a hollow shell 1. A second sealing member is provided at the connected edge to seal the gap between the first shell wall 11 and the second shell wall 12.

[0047] In this embodiment, the housing 1 is composed of a first housing wall 11 and a second housing wall 12, which enclose an installation cavity 13. The button assembly 4 is mounted on the installation hole 111 of the first housing wall 11. The first housing wall 11 also has a sound receiving hole 112, which collects sound transmitted to the surrounding area of the BTE hearing aid. It is understood that when the first and second housing walls 11 and 12 are installed together, a gap exists between them. Since the button assembly 4 is a movable structure, the relative movement between the button 41 and the first housing wall 11 will also create a gap. This application also provides a sealing assembly, which includes a first sealing member 43, a second sealing member, and a waterproof mesh. The first sealing member 43 blocks the gap between the button 41 and the installation hole 111, the second sealing member blocks the gap between the first and second housing walls 11 and 12, and the waterproof mesh covers the sound receiving hole 112. This solution creates a sealed installation cavity 13, improving the waterproof performance of the BTE hearing aid.

[0048] See Figure 1 and Figure 2 An embodiment of the present application provides a waterproof structure. The second shell wall 12 is provided with a sealing groove 124 . The first shell 1 and the sealing groove 124 are enclosed to form a sealed cavity. The second sealing member is provided in the sealing groove 124 .

[0049] In this embodiment, the edge surface of the second shell wall 12 is provided with a boss, and a sealing groove 124 is provided on the outward side of the boss. The sealing groove 124 is used to accommodate a second sealing member. It is understood that the second sealing member is connected within the sealing groove 124 to form an annular shape. The second sealing member can be made of silicone or rubber, or a viscous colloid. When the first shell wall 11 and the second shell wall 12 are connected, the first shell wall 11 is snapped onto the boss, so that the first shell wall 11 is attached to the surface of the boss with the sealing groove 124, so that the sealing groove 124 forms a sealed cavity. The second sealing member is located within the sealed cavity to seal the gap between the first shell wall 11 and the second shell wall 12.

[0050] In this embodiment, a sealing groove 124 is provided on the second shell wall 12. This groove 124 can be used to secure the second sealant, provide a reference position for the glue application process, and allow space for the silicone to be accommodated. The first shell wall 11 and the second shell wall 12 are then connected, sandwiching the second sealant between the first shell wall 11 and the second shell wall 12, so that the gap between the first shell wall 11 and the second shell wall 12 is filled with the second sealant.

[0051] See Figure 1 、 Figure 2 、 Figure 11 and Figure 13One embodiment of the present application provides a waterproof structure. The second shell wall 12 is provided with a charging hole 122. The waterproof structure also includes a charging terminal 5 and a third sealing member. The charging terminal 5 is provided through the charging hole 122. The third sealing member blocks the gap between the charging terminal 5 and the charging hole 122.

[0052] In this embodiment, the second shell wall 12 is provided with a charging hole 122, and the charging hole 122 consists of three circular holes. The charging terminal 5 is provided with three pin needles 51, and the three pin needles 51 are connected to the terminal seat 52. One pin needle 51 is set corresponding to one circular hole. When the circuit board assembly 2 is installed in the installation cavity 13, the base of the circuit board assembly 2 is installed in the second shell wall 12 and the enclosure 322 of the circuit board has an abutting surface 301, and the abutting surface 301 abuts against the terminal seat 52, that is, the abutting surface 301 and the inner wall of the second shell wall 12 clamp the electronic seat of the charging terminal 5 to fix the charging terminal 5. The third sealing member can be silicone or rubber, or a viscous or fluid colloid.

[0053] According to this embodiment, when installing the charging terminal 5, the pin 51 is first inserted from the inside of the mounting cavity 13 into the charging hole 122, and then the circuit board assembly 2 is installed. At this point, the pin 51 is inserted into the gap between the charging hole 122 and the charging hole 122, while the terminal base 52 of the charging terminal 5 is located within the mounting cavity 13 and electrically connected to the circuit board assembly 2, and is clamped between the inner wall of the second shell wall 12 and the abutment surface 301. A third sealant is then provided between the abutment surface 301 and the terminal base 52. The third sealant is glued to seal the gap between the charging terminal 5 and the charging hole 122. The third sealant is also connected to the abutment surface 301 of the base, so that the second shell wall 12 and the base clamp the third sealant, making the third sealant more effective and enhancing the waterproof effect. The adhesiveness of the third sealant also secures the main circuit board assembly 2.

[0054] See Figure 1 、 Figure 2 and Figure 12 One embodiment of the present application provides a waterproof structure. The housing 1 is provided with an earphone hole 123. The waterproof structure further includes an earphone terminal 6 and a fourth sealing member. The earphone terminal 6 is provided through the earphone hole 123. The fourth sealing member blocks the gap between the earphone terminal 6 and the earphone hole 123.

[0055] In this embodiment, an earphone jack 123 is defined on the side of the first and second housing walls 11 and 12 away from the charging port 122. Specifically, each of the first and second housing walls 11 and 12 has a semicircular hole, which together form the earphone jack 123. The earphone terminal 6 has a fixing post 61 with a slot 62. The first housing wall 11 has a latch 113. When the earphone terminal 6 is installed, the latch 113 is inserted into the slot 62, and the fixing post 61 is inserted into the earphone jack 123, electrically connecting the circuit board assembly 2. A fourth sealant is disposed around the columnar structure, sandwiching the fourth sealant between the earphone terminal 6 and the earphone jack 123 to seal the gap between them.

[0056] Furthermore, the fourth sealing member can be made of silicone or rubber, or a viscous colloid. When the fourth sealing member is a sealing ring structure, the fourth sealing member is arranged in the housing 1, and the earphone terminal 6 can be detachably connected to the earphone jack 123, so that the earphone can be replaced.

[0057] Through this embodiment, the four sealing members seal the gap between the earphone terminal 6 and the earphone hole 123, thereby improving the waterproof effect.

[0058] See Figure 1 、 Figure 2 and Figure 3 , an embodiment of the present application provides a waterproof structure. The waterproof structure includes a shell 1, a button assembly 4 and a circuit board assembly 2. The button assembly 4 and the circuit board assembly 2 are connected to the shell 1. Among them, the circuit board assembly 2 is used to process and transmit sound signals, amplify, filter and other processes the received sound to adapt to the user's hearing needs, and transmit the processed signal to the relevant sound-emitting components. For example, when external sound is transmitted to the behind-the-ear hearing aid, the circuit board assembly 2 will analyze and optimize the sound so that the user can hear the sound more clearly. The button assembly 4 is used to control various functions of the behind-the-ear hearing aid, such as adjusting the volume, switching different sound modes or turning the behind-the-ear hearing aid on / off. For example, the user can increase the volume by pressing the button assembly 4 to adapt to different environmental sound levels; or when quiet is needed, turn off the behind-the-ear hearing aid through the button assembly 4.

[0059] In this embodiment, the housing 1 includes a first shell wall 11 and a second shell wall 12. The first shell wall 11 is connected to the second shell wall 12 to enclose a mounting cavity 13. The circuit board assembly 2 is disposed in the mounting cavity 13. One end of the button assembly 4 is located in the mounting cavity 13 and connected to the circuit board assembly 2, and the other end of the button assembly 4 passes through the first shell wall 11 and is exposed to the outside. The circuit board assembly 2 has a first edge 201 and a second edge 202, and the first edge 201 and the second edge 202 are located on opposite sides of the circuit board assembly, wherein the first edge 201 is contoured with the inner side of the first shell wall 11, and the first edge 201 of the circuit board assembly 2 is abutted against the inner side of the first shell wall 11. The second edge 202 of the circuit board assembly 2 is contoured with the inner side of the second shell wall 12, and the second edge 202 of the circuit board assembly 2 is abutted against the inner side of the second shell wall 12.

[0060] In this embodiment, the housing 1 is teardrop-shaped, with the first housing wall 11 convex relative to the mounting cavity 13 and the second housing wall 13 concave relative to the mounting cavity 13. Correspondingly, the circuit board assembly 2 is roughly teardrop-shaped, convex toward the first housing wall 11 and concave toward the second housing wall 12. When wearing the behind-the-ear hearing aid, the first housing wall 11 rests against the outside of the auricle.

[0061] In this embodiment, the button assembly 4 includes two contacts 411 . The two contacts 411 extend into the mounting cavity 13 and connect to the contacts 21 of the circuit board assembly 2 .

[0062] The waterproof structure provided by the present application is provided with a shell wall arranged in a curved shape on one side of the shell 1, so that the entire waterproof structure is a curved structure, and the interior thereof is a mounting cavity 13. The edges of the two sides of the circuit board assembly 2 are arranged in a curved shape, so that the entire circuit board assembly 2 is also a curved structure. The button assembly 4 is installed on the curved shell wall. By arranging the circuit board assembly 2 in the mounting cavity 13, the curved edge of the circuit board assembly 2 can adapt to the curved shell wall of the shell 1, and the edge of the circuit board assembly 2 is close to the shell wall. Since the first edge 201 is contoured with the inner side of the first shell wall 11, and the first edge 201 of the circuit board assembly 2 is against the inner side of the first shell wall 11, the button assembly 4 located on the shell wall is close to the circuit board assembly 2, which facilitates the connection of the button assembly 4 to the circuit board assembly 2.

[0063] When assembling the behind-the-ear hearing aid, first install the circuit board assembly 2 on the second shell wall 12, then install the button assembly 4 on the first shell wall 11, and then connect the first shell wall 11 and the second shell wall 12 so that the contact 411 of the button assembly 4 is connected to the contact 21 of the circuit board assembly 2.

[0064] See Figure 2 、 Figure 3 、 Figure 7 and Figure 8 In this embodiment, the housing 1 is provided with a mounting hole 111, and the button assembly 4 includes a button seat 42 and a button 41. The button seat 42 is provided in the mounting hole 111 and has a sliding groove 421. The button 41 is slidably connected to the sliding groove 421, and the button 41 is connected to the circuit board assembly 2.

[0065] Specifically, a mounting hole 111 is provided on the side of the first housing wall 11 facing away from the second housing wall 12, i.e., on the side of the housing wall mounted on the protrusion. The mounting hole 111 communicates with the mounting cavity 13. A button seat 42 is a slot-shaped structure. The button seat 42 is located within the mounting cavity 13 and connected to the first housing wall 11, such that the mounting hole 111 communicates with the sliding slot 421. The button 41 is slidably connected within the sliding slot 421. An opening is provided at the bottom of the button seat 42 to allow the contact 411 of the button 41 to extend into the mounting cavity 13. The contact 411 passes through the opening and connects to the contact 21 of the circuit board assembly 2.

[0066] In this embodiment, the sliding groove 421 limits the travel of the button 41. After a certain distance of movement, the button 41 abuts against the inner wall of the housing 1 or the bottom wall of the button seat 42 to prevent the button 41 from falling out of the sliding groove 321.

[0067] When assembling the button assembly 4, first install the button 41 in the sliding groove 421, which acts as a limiter. Then connect the button seat 42 to the first shell wall 11 to complete the installation of the button assembly 4, making it easier to connect the button assembly 4 and the circuit board assembly 2.

[0068] See Figure 2 、 Figure 7 and Figure 8 In this embodiment, the button assembly 4 further includes a first seal 43, which is mounted in the sliding groove 421. The button 41 is connected to the first seal 43. The button 41 and the button seat 42 clamp the first seal 43, and the elastic potential energy of the first seal 43 keeps the button 41 in contact with the housing 1. This ensures the sealing of the button assembly 4, preventing moisture from entering the mounting cavity 13 through the button assembly 4, while also providing the button 41 with a certain degree of elasticity, improving the tactile feel when the user presses the button 41.

[0069] refer to Figure 1 、 Figure 4 、 Figure 5 and Figure 6The present invention provides an embodiment of a waterproof structure comprising a housing 1 and a circuit board assembly 2. The housing 1 has a curved side wall configured to conform to the back of the ear, i.e., the outer concha. The housing 1 also defines a mounting cavity 13. The circuit board assembly 2 is disposed within the mounting cavity 13. One side edge of the circuit board assembly 2 is curved. When the circuit board assembly 2 is installed within the mounting cavity 13, the curved edge of the circuit board assembly 2 abuts the curved side wall.

[0070] Specifically, the shell 1 has a curved structure, so that one side of the shell walls of the shell 1 is concave and curved, and the other side is convex and curved. When the user wears the behind-the-ear hearing aid, the concave curved side fits the back of the ear. The inside of the shell 1 is a mounting cavity 13. The back of the ear is regarded as curved, and the arc direction along the back of the ear is set as the first direction 101, and the direction perpendicular to the back of the ear is set as the second direction 102. The structure of the circuit board assembly 2 is also a curved structure, so that the two side edges of the circuit board assembly 2, the second edge 202 is a concave curve, and the first edge 201 is a convex curve. The two side curves of the circuit board assembly 2 and the two side shell walls of the shell 1 are correspondingly abutted, so that the circuit board assembly 2 is embedded in the shell 1 and then installed in the mounting cavity 13.

[0071] Furthermore, the housing 1 is divided into a first housing wall 11 and a second housing wall 12. The first housing wall 11 has a protruding curvature, while the second housing wall 12 has a concave curvature. The first housing wall 11 and the second housing wall 12 enclose a mounting cavity 13. The circuit board assembly 2 is first mounted on the second housing wall 12, and then the first housing wall 11 is mounted, so that the first housing wall 11 and the second housing wall 12 clamp and secure the circuit board assembly 2.

[0072] Through this embodiment, a waterproof structure for mounting a circuit board assembly 2 and electronic components is provided. One side of the housing 1 has a curved wall that partially conforms to the back of the ear, i.e., the outer concha. This results in a curved structure for the entire waterproof structure, with a mounting cavity 13 within. One side edge of the circuit board assembly 2 is curved, resulting in a curved structure for the entire circuit board assembly 2. Considering the back of the ear as curved, let the arc direction along the back of the ear be a first direction 101, and a direction perpendicular to the first direction 101 be a second direction 102. The curved wall of the housing 1 and the curved edge of the circuit board assembly 2 both extend along the first direction 101, while the surface of the circuit board assembly 2 on which the electronic components are mounted is parallel to the second direction 102. It is understood that this arrangement ensures that when electronic components are mounted on the circuit board assembly 2, they will not be affected by the sides of the behind-the-ear hearing aid that conform to or are away from the back of the ear, making the design of the circuit board assembly 2 or the mounting position of the electronic components more flexible.

[0073] See Figure 2 and Figure 3In this embodiment, the circuit board assembly 2 includes a mounting base 3 and the circuit board assembly 2. The mounting base 3 includes a base plate 31. The circuit board assembly 2 is mounted on the base plate 31. The mounting base 3 is disposed within the mounting cavity 13. The side of the base plate 31 facing the second housing wall 12 is provided with a second edge 202. The side of the base plate 31 facing the mounting space 35 is flat, which facilitates adaptation to the perimeter of the circuit board assembly 2 and improves the accuracy and efficiency of mounting the circuit board assembly 2.

[0074] refer to Figure 2 、 Figure 3 、 Figure 9 and Figure 10 In this embodiment, the housing 1 is provided with a positioning groove 121, the bottom plate 31 is connected to the positioning groove 121, the bottom plate 31 is provided with a positioning column 33, the positioning column 33 extends roughly parallel to the bottom plate 31, and the circuit board assembly 2 is provided with a positioning hole 22. The circuit board assembly 2 is installed on the bottom plate 31 through the positioning column 33 and the positioning hole 22.

[0075] Specifically, the bottom of the housing 1, i.e., the second wall 12, is a concave, curved wall. The side facing the mounting cavity 13 is convex, with a portion cut away to form a positioning groove 121 enclosed by two parallel side surfaces and a flat surface. The distance between the two parallel side surfaces is equal to the width of the mounting seat 3. The flat surface and two parallel side surfaces allow the mounting seat 3 to slide within the positioning groove 121, making it easier for the mounting seat 3 to find its correct position.

[0076] In this embodiment, the base plate 31 is further connected to positioning posts 33, and the circuit board assembly 2 is provided with positioning holes 22. The positioning holes 22 of the circuit board assembly 2 can be locked onto the positioning posts 33 to achieve fixation. The multiple positioning structures of the positioning slots 121, positioning posts 33, and positioning holes 22 ensure that the circuit board assembly 2 can be accurately mounted on the mounting base 3, and the mounting base 3 can be accurately mounted on the housing 1.

[0077] See Figure 2 、 Figure 3 、 Figure 4 and Figure 5In this embodiment, the mounting base 3 is further provided with a bracket 32. The bracket 32 is connected to the base plate 31, and the positioning post 33 is connected to the bracket 32. The bracket 32 and the circuit board assembly 2 separate the mounting cavity 13 into a first cavity 131 and a second cavity 132. The first cavity 131 is used to install the battery, and the second cavity 132 is used to install the speaker and receiver. After the circuit board assembly 2 is installed on the mounting base 3 and the mounting base 3 is installed in the mounting cavity 13, the bracket 32 divides the mounting cavity 13 into the first cavity 131 and the second cavity 132. The first cavity 131 is used to install the battery, and the second cavity 132 is used to install the speaker and receiver. The separation of the battery can provide protection for the battery. The bracket 32 and the housing 1 enclose the second cavity 132. Due to the different installation method of the circuit board assembly 2, the location for installing the receiver and speaker is no longer restricted by the curved housing 1. The presence of a certain amount of space can also improve the sound reception effect.

[0078] refer to Figure 3 、 Figure 4 and Figure 5 The present invention provides an embodiment in which the bracket 32 includes a partition 321, a surrounding plate 322, and a connecting rod 323. The partition 321 is connected to the base plate 31 and is spaced apart from the circuit board assembly 2. The surrounding plate 322 is connected to the partition 321. The surrounding plate 322, the partition 321, and the base plate 31 together form a first cavity 131. The surrounding plate 322 and the housing 1 together form a second cavity 132. The connecting rod 323 is disposed within the second cavity 132 and connects the surrounding plate 322 and the base plate 31.

[0079] Specifically, the partition 321 is connected to one side of the base plate 31 and is spaced and arranged parallel to the circuit board assembly 2. One side of the enclosure 322 is connected to the edge of the partition 321. The other side of the enclosure 322 is provided with a positioning post 33, and the circuit board assembly 2 is mounted on the positioning post 33 through the positioning hole 22. The enclosure 322, the partition 321 and the base plate 31 together form the first cavity 131. The shape of the first cavity 131 is adapted to the shape of the battery. The remaining space outside the first cavity 131 is the second cavity 132. One end of the connecting rod 323 is connected to the side of the base plate 31 away from the enclosure 322, and the other end is connected to the enclosure 322. Positioning rods are arranged at intervals on the connecting rod 323.

[0080] Through this embodiment, different structures are used to protect the batteries of the circuit board and improve the structural strength of the entire mounting frame.

[0081] The present utility model provides an embodiment, wherein the mounting seat 3 is provided with a limiting boss, and the circuit board assembly 2 is provided with a limiting groove, and the circuit board assembly 2 is limited on the mounting seat 3 by the limiting boss and the limiting groove.

[0082] Specifically, a limiting protrusion is provided on the bottom plate 31, and the limiting protrusion extends along a certain direction, and a limiting groove is provided on the edge of the circuit board assembly 2. When the limiting groove of the circuit board assembly 2 is engaged with the limiting protrusion, the circuit board assembly 2 can slide.

[0083] When installing the circuit board assembly 2, first limit the circuit board assembly 2 through the limiting groove and the limiting protrusion. At this time, the positioning hole 22 of the circuit board assembly 2 is aligned with the positioning column 33 of the mounting seat 3, and then the circuit board assembly 2 can be slid through the positioning hole 22 to install the circuit board assembly 2 on the positioning column 33.

[0084] The present invention provides an embodiment, in which the waterproof structure further comprises an earphone, which is connected to the housing 1 and electrically connected to the circuit board assembly 2 .

[0085] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A waterproof structure for a behind-the-ear hearing aid, wherein the arc direction along the back of the ear is a first direction, and the second direction perpendicular to the first direction is a second direction, characterized in that: The waterproof structure comprises: A housing, the housing comprising a first housing wall and a second housing wall, the first housing wall and the second housing wall enclosing a mounting cavity, the first housing wall being provided with a mounting hole and a sound receiving hole communicating with the mounting cavity, and the second housing wall being provided with a charging hole; a button assembly, the button assembly being passed through the mounting hole; A mounting seat connected to the mounting cavity, the mounting seat being provided with a partition, the partition being parallel to the second direction, the mounting seat being used to mount a circuit board, the circuit board being arranged parallel to the partition; and A sealing assembly, the sealing assembly includes a first seal, a second seal, a third seal, a charging terminal and a waterproof net, the first seal blocks the gap between the button assembly and the mounting hole, the second seal blocks the gap between the first shell wall and the second shell wall, the waterproof net covers the sound receiving hole, the charging terminal is passed through the charging hole, the third seal blocks the gap between the charging terminal and the charging hole, and the mounting seat is also provided with an abutment surface, the abutment surface and the inner wall of the second shell wall clamp the charging terminal.

2. The waterproof structure according to claim 1, characterized in that: The button assembly includes: A button seat, the button seat is connected to the mounting hole and is provided with a sliding groove; A button is slidably connected to the sliding groove, the first sealing member is arranged in the sliding groove, and the button is connected to the first sealing member.

3. The waterproof structure according to claim 1, characterized in that: The waterproof structure also includes a circuit board assembly, which is arranged in the installation cavity. One side of the circuit board assembly is connected to the first shell wall in a conformal manner, and the other side of the circuit board assembly is connected to the second shell wall in a conformal manner. The side of the button assembly located in the installation cavity is connected to the circuit board assembly.

4. The waterproof structure according to claim 3, characterized in that: The shell is provided with a positioning groove, the mounting seat is provided with a base plate, the base plate is connected to the positioning groove, the base plate is provided with a positioning column, the positioning column extends parallel to the base plate, the circuit board is provided with a positioning hole, and the circuit board is mounted on the base plate through the positioning column and the positioning hole.

5. The waterproof structure according to claim 4, characterized in that: The mounting seat is also provided with a bracket, the bracket is connected to the base plate, the positioning column is connected to the bracket, the bracket and the circuit board separate the mounting cavity into a first cavity and a second cavity, the first cavity is used to install the battery, and the second cavity is used to install the speaker and the receiver.

6. The waterproof structure according to claim 5, characterized in that: The bracket comprises: an enclosure, the enclosure being connected to the partition, the enclosure, the partition, and the bottom plate enclosing together to form the first cavity, and the enclosure and the shell enclosing together to form the second cavity; and A connecting rod is disposed in the second cavity and is connected to the enclosure plate and the bottom plate.

7. The waterproof structure according to claim 1, characterized in that: The second shell wall is provided with a sealing groove, the first shell wall and the sealing groove are enclosed to form a sealing cavity, and the second sealing member is provided in the sealing cavity.

8. The waterproof structure according to claim 1, characterized in that: The housing is provided with an earphone hole, and the waterproof structure further includes an earphone terminal and a fourth sealing member. The earphone terminal is provided through the earphone hole, and the fourth sealing member blocks the gap between the earphone terminal and the earphone hole.

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