Binaural hearing aid with protective function

Abstract

The present invention discloses a binaural hearing aid with a protective function, and relates to the technical field of hearing aids, including a hearing aid housing, an earpiece, and a protective cover. One end of the hearing aid housing is connected to a plastic ear hook, and one end of the plastic ear hook is buckled with the protective cover. A hose drawn from the earpiece passes through the protective cover and the plastic ear hook and extends into the hearing aid housing. The hearing aid housing includes a first shell and a second shell. The sealing structure formed by the sealing ring prevents sweat and rain from corroding the internal circuit of the hearing aid. The sealing shock-absorbing pad seals the gap between the first shell and the second shell, and sweat and dirt cannot remain in the gap, further improving the sealing performance and facilitating cleaning. The sealing shock-absorbing pad can absorb part of the impact force generated by falling through the deformable characteristics to protect the hearing aid. The sealing ring shrinks inward to drive the outer locking plate to move toward the direction of the air flow channel, so that the locking teeth are disengaged from the locking groove to facilitate the disassembly of the first shell and the second shell.

Description

Technical Field

[0001] The present invention relates to the technical field of hearing aids, and in particular to a binaural hearing aid with a protective function. Background Art

[0002] The hearing aid system may include a single hearing aid or two hearing aids, one for each ear of the hearing aid user. The hearing aid fits the ear by installing a bent tube at the bottom. In order to disassemble the hearing aid for maintenance, the existing hearing aid uses a snap-on connection to separate the shell. The behind-the-ear hearing aid is worn above the auricle. After long-term wear, it is easy to be affected by sweat, rain, and water after the wearer washes his face. The sweat or water behind the ear will flow into the hearing aid through the gap of the shell, affecting the internal electrical components, accelerating the aging of components, and reducing the service life of the hearing aid. Summary of the invention

[0003] The purpose of the present invention is to provide a binaural hearing aid with a protective function, which has a sealing structure formed by a sealing ring to prevent sweat and rain from corroding the internal circuit of the hearing aid. By changing the shape of the gap, sweat can quickly fall along the arc groove gap to the bottom gap of the hearing aid shell, avoiding sweat hanging on the hearing aid gap position where it fits the ear, reducing the breeding of bacteria there, and with the pluggable collection and protection component, absorbing the impact force of the hearing aid falling part to reduce damage to the hearing aid, the collection tube disperses and discharges the sweat flowing into the arc groove gap from the drainage hole, avoiding sweat gathering at a certain place at the bottom end of the hearing aid to cause dirt accumulation, and the sealing ring shrinks inward to drive the outer lock plate to move toward the direction of the air flow channel, so that the lock teeth are separated from the lock groove to facilitate the disassembly of the first shell and the second shell.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: a binaural hearing aid with a protective function, comprising a hearing aid housing, an earpiece and a protective cover, one end of the hearing aid housing is connected to a plastic ear hook, one end of the plastic ear hook is buckled with the protective cover, a hose led out of the earpiece passes through the protective cover and the plastic ear hook and extends into the hearing aid housing, an earplug is also installed on the side of the earpiece, a sealing device is arranged in the hearing aid housing, the hearing aid housing is formed by splicing a first shell and a second shell, the sealing device is arranged at a gap position at the splicing of the end faces of the first shell and the second shell, and is used to seal the gap between the end faces of the first shell and the second shell;

[0005] The sealing device includes an outer locking plate fixed to the second shell and an inner locking plate fixed to the first shell, wherein the outer locking plate and the inner locking plate are arranged alternately, wherein after the first shell and the second shell are spliced ​​together, one side of the outer locking plate abuts against the side of the inner locking plate, and the other side of the outer locking plate is connected to the sealing ring, and the sealing ring covers the gap between the first shell and the second shell.

[0006] Furthermore, the plastic ear hook is composed of an upper half shell and a lower half shell, the upper half shell is fixed to a port of the first shell, and the lower half shell is fixed to a port of the second shell, partitions are fixed on the inner walls of the upper half shell and the lower half shell, and card slots are also provided at the ports of the upper half shell and the lower half shell, the upper half shell and the lower half shell are card-connected to form a plastic ear hook, the two partitions are in close contact and separate the interior of the plastic ear hook into a first cavity and a second cavity, and the upper half shell is also provided with a sound receiving groove connected to the second cavity.

[0007] Furthermore, the protective sleeve is fixed on the hose, and the card block arranged on the port of the protective sleeve is inserted into the card slot.

[0008] Furthermore, the inner locking plate and the outer locking plate are respectively arranged along the edges of the first shell and the second shell, the edges of the first shell and the inner locking plate constitute a locking ring groove, and the edges of the second shell and the outer locking plate constitute an accommodating ring groove, and the sealing ring is arranged in the accommodating ring groove.

[0009] Furthermore, the end faces of the first shell and the second shell are non-flat surfaces, and the end faces of the first shell and the second shell are both provided with notches, and an arc slot gap is formed after the first shell and the second shell are spliced, wherein the middle portion of the arc slot gap has a large diameter, and the upper and lower ends of the arc slot gap have small diameters;

[0010] A collecting and protecting component is inserted into the arc groove gap at the bottom of the first shell and the second shell. The collecting and protecting component includes an anti-fall pad and a collecting tube. The collecting tube is arranged along the center line of the inner wall of the anti-fall pad. The collecting tube is inserted into the arc groove gap with a large diameter. A guide block with a small diameter inserted into the upper end of the arc groove gap is fixed on the top of the collecting tube. A drainage hole connected to the collecting tube is also arranged on the anti-fall pad.

[0011] Furthermore, a circle of sealing shock-absorbing pads is also arranged on the outer peripheral surface of the sealing ring, and the sealing shock-absorbing pads are clamped by the end surfaces of the first shell and the second shell.

[0012] Furthermore, a locking groove is provided on the side of the inner locking plate facing the first shell, and a locking tooth is provided on the side of the outer locking plate facing the second shell. After the first shell and the second shell are spliced ​​together, the locking tooth is inserted into the locking groove to lock the first shell and the second shell, and the locking tooth and the locking groove are flush with the height of the center of the airflow channel.

[0013] Furthermore, an air flow channel is provided inside the sealing ring, and a telescopic component for injecting or extracting air into the air flow channel is also installed in the second shell, wherein a knob connected to the telescopic component passes through the second shell.

[0014] Furthermore, the telescopic assembly includes a cylinder fixed on the second shell and a piston head sliding in the cylinder, the cylinder is connected to a pipe connected to the air flow channel, one end of a push rod connected to the piston head passes through the cylinder and is connected to an inner ring, the inner ring is threadedly connected to a transmission screw, the inner ring is inserted into an outer ring, and a port of the transmission screw is meshed with a knob through a bevel gear.

[0015] Furthermore, the outer ring is fixed on the second housing, a guide groove is provided on the inner circumference of the outer ring, and a guide block inserted into the guide groove is fixed on the outer circumference of the inner ring, which is used for the transmission screw to rotate and drive the inner ring and the piston head to reciprocate.

[0016] Technical effects and advantages of the present invention:

[0017] 1. After the first shell and the second shell are spliced ​​together, the outer locking plate and the inner locking plate can provide support for the sealing ring, and the sealing ring can cover the connection between the two places. The sealing structure formed by the sealing ring can prevent sweat and rainwater from corroding the internal circuit of the hearing aid.

[0018] 2. The sealing shock-absorbing pad is squeezed by the first shell and the second shell to fill the gap between the end faces of the first shell and the second shell. The outermost edge of the sealing shock-absorbing pad is flush with or exceeds the first shell and the second shell. Sweat cannot flow into the gap between the first shell and the second shell, and dirt cannot remain in the gap, which further improves the sealing performance. The end faces of the first shell and the second shell are separated by the sealing shock-absorbing pad. When the hearing aid falls, the first shell and the second shell will act on the sealing shock-absorbing pad when they are slightly deformed. The sealing shock-absorbing pad can absorb part of the impact force generated by the fall through the deformation property to protect the hearing aid and extend its life.

[0019] 3. When the air flow channel is evacuated, the sealing ring contracts inwardly to drive the outer locking plate to move toward the air flow channel, so that the locking teeth are disengaged from the locking groove to facilitate the disassembly of the first shell and the second shell. After the first shell and the second shell are installed, air is injected into the air flow channel, and the air flow channel will be stretched open to drive the outer locking plate to move toward the inner locking plate until the locking teeth and the locking groove are engaged. The sealing ring can improve the sealing performance of the gap between the first shell and the second shell, and also reduce the pressure on the gap between the first shell and the second shell, thereby preventing the connection between the first shell and the second shell from being stretched outward.

[0020] 4. By changing the shape of the gap, sweat flows into the gap. Due to the larger opening of the arc slot gap, the tension of the sweat in the gap is destroyed, allowing the sweat to quickly fall along the arc slot gap to the bottom gap of the hearing aid shell, avoiding sweat hanging in the hearing aid gap where it fits the ear, reducing the breeding of bacteria there, and cooperating with the pluggable collection and protection components to absorb the impact force of the falling part of the hearing aid to reduce damage to the hearing aid. The collection tube disperses the sweat flowing into the arc slot gap from the drainage hole to avoid sweat gathering at a certain place at the bottom of the hearing aid, causing dirt accumulation. At the same time, the collection and protection components are easy to disassemble for later replacement and cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is an overall structural diagram of the first embodiment of the present invention;

[0022] Figure 2 It is an exploded view of the first embodiment of the present invention;

[0023] Figure 3 This is a structural diagram of a sealing device according to Embodiment 1 of the present invention;

[0024] Figure 4 is a cross-sectional view of a sealing device according to Embodiment 1 of the present invention;

[0025] Figure 5 It is a cross-sectional view of the sealing ring of the present invention being separated from the accommodating ring groove;

[0026] Figure 6 is a cross-sectional view of a sealing device according to a second embodiment of the present invention;

[0027] Figure 7 This is a structural diagram of a sealing ring according to a second embodiment of the present invention;

[0028] Figure 8 is a cross-sectional view of a sealing device according to a third embodiment of the present invention;

[0029] Fig. 9 It is a cross-sectional view of the sealing ring of the third embodiment of the present invention;

[0030] Fig.10 This is a diagram showing the first shell and the second shell being separated from each other in Embodiment 3 of the present invention;

[0031] Fig.11 For the present invention Fig.10 A magnified image of point A;

[0032] Fig.12 This is a structural diagram of a telescopic assembly according to Embodiment 3 of the present invention;

[0033] Fig.13 This is a separation diagram of a hearing aid and a collection protection part according to a fourth embodiment of the present invention;

[0034] Fig.14 is a partial cross-sectional view of a hearing aid according to a fourth embodiment of the present invention;

[0035] Fig.15 For the fourth embodiment of the present invention Fig.14 The enlarged view of point B;

[0036] Fig.16 This is a structural diagram of the collection and protection component of embodiment 4 of the present invention.

[0037] In the figure: 1. hearing aid shell; 11. first shell; 12. second shell; 13. locking ring groove; 14. accommodating ring groove; 2. earpiece; 21. hose; 3. protective cover; 31. block; 4. plastic ear hook; 41. upper shell; 411. sound receiving groove; 42. lower shell; 43. partition; 44. slot; 5. telescopic assembly; 51. cylinder; 52. piston head; 53. outer ring; 54. inner ring; 55. transmission screw; 6. sealing device; 61. sealing ring; 611. sealing shock-absorbing pad; 62. outer locking plate; 63. inner locking plate; 64. locking groove; 65. locking tooth; 66. air flow channel; 7. earplug; 8. knob; 10. collection protection component; 101. anti-fall pad; 102. collection tube. DETAILED DESCRIPTION

[0038] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0039] In order to better understand the binaural hearing aid with a protective function provided by the present embodiment, the following first briefly introduces the existing behind-the-ear binaural hearing aid. The prior art binaural hearing aid realizes the separation of the shell by snapping. Due to manufacturing errors in the process, there will be gaps at the connection of the shells after splicing. Since the behind-the-ear binaural hearing aid is worn above the auricle, it is easily eroded by sweat, rainwater, etc. after long-term wearing. The sweat behind the ear will flow into the hearing aid through the gap of the shell, resulting in affecting the internal electrical components and causing hearing aid failure. In the prior art, a movable waterproof shell is installed on the adjustment part of the outer shell of the hearing aid, and the sealing is achieved by a sealing strip installed inside the waterproof shell. However, the waterproof shell only seals the upper edge of the hearing aid, and no waterproof shell is set at the position where the hearing aid contacts the ear root, resulting in the sweat behind the ear still flowing into the hearing aid from the gap below the hearing aid shell. The specification aims to solve the above technical problems. The present application embodiment provides a binaural hearing aid with a protective function.

[0040] Example 1: Reference Figure 1-Figure 5 , which is the first embodiment of the present invention, provides a binaural hearing aid with a protective function, comprising a hearing aid housing 1, an earpiece 2 and a protective cover 3, one end of the hearing aid housing 1 is connected to a plastic ear hook 4, one end of the plastic ear hook 4 is buckled with the protective cover 3, a hose 21 led out from the earpiece 2 passes through the protective cover 3 and the plastic ear hook 4 and extends into the hearing aid housing 1, an earplug 7 is also installed on the side of the earpiece 2, a sealing device 6 is arranged in the hearing aid housing 1, the hearing aid housing 1 is formed by splicing a first shell 11 and a second shell 12, the sealing device 6 is arranged at the gap position at the splicing of the end faces of the first shell 11 and the second shell 12, and is used to seal the gap between the end faces of the first shell 11 and the second shell 12;

[0041] The gap between the first shell 11 and the second shell 12 is sealed by the sealing device 6 to prevent sweat and rain from corroding the internal circuit of the hearing aid.

[0042] The sealing device 6 includes an outer locking plate 62 fixed to the second housing 12 and an inner locking plate 63 fixed to the first housing 11. The outer locking plate 62 and the inner locking plate 63 are arranged alternately. After the first housing 11 and the second housing 12 are spliced, one side of the outer locking plate 62 abuts against the side of the inner locking plate 63, and the other side of the outer locking plate 62 is connected to the sealing ring 61, and the sealing ring 61 covers the gap between the first housing 11 and the second housing 12. The inner locking plate 63 and the outer locking plate 62 are arranged along the edges of the first housing 11 and the second housing 12, respectively. The edges of the first housing 11 and the inner locking plate 63 form a locking ring groove 13, and the edges of the second housing 12 and the outer locking plate 62 form a receiving ring groove 14. The sealing ring 61 is arranged in the receiving ring groove 14.

[0043] The top surface of the outer locking plate 62 is set higher than the end surface of the first shell 11, and the height of the outer locking plate 62 is also higher than the end surface of the second shell 12. After the first shell 11 and the second shell 12 are spliced, the connection between the outer locking plate 62 and the inner locking plate 63 is staggered with the end surface connection of the first shell 11 and the second shell 12. The outer locking plate 62 and the inner locking plate 63 can provide support for the sealing ring 61, and the outer locking plate 62 and the inner locking plate 63 can also form another protective wall. At the same time, the sealing ring 61 can cover the two connections. The sealing structure formed by the sealing ring 61 can prevent sweat and rainwater from eroding the internal circuit of the hearing aid.

[0044] The plastic ear hook 4 is composed of an upper half shell 41 and a lower half shell 42. The upper half shell 41 is fixed to a port of the first shell 11, and the lower half shell 42 is fixed to a port of the second shell 12. Partitions 43 are fixed on the inner walls of the upper half shell 41 and the lower half shell 42. Card slots 44 are also provided at the ports of the upper half shell 41 and the lower half shell 42. The upper half shell 41 and the lower half shell 42 are card-connected to form the plastic ear hook 4. The two partitions 43 are in close contact and separate the interior of the plastic ear hook 4 into a first cavity and a second cavity. The upper half shell 41 is also provided with a sound receiving groove 411 connected to the second cavity.

[0045] The protective sleeve 3 is fixed on the hose 21, and the block 31 provided on the port of the protective sleeve 3 is inserted into the card slot 44. The second cavity constitutes an arc-shaped sound collection channel with a diameter from small to large. The sound collection slot 411 is provided at the end with a small diameter of the sound collection channel. The lower half shell 42 is provided with an inclined surface connected to the partition 43, wherein the inclined surface is located directly below the sound collection slot 411, and is used to guide the sound to propagate toward the receiver. The external sound received on the sound collection slot 411 is propagated toward the receiver through the guidance of the inclined surface, and the second cavity is an arc-shaped cavity, and the sound wave is reflected by the inner wall of the arc-shaped cavity to be concentrated on the receiver, so as to receive clear external sound.

[0046] After the upper half shell 41 and the lower half shell 42 are disassembled, the protective cover 3 can be replaced. The pipe connected to the protective cover 3 can transmit the sound amplified by the hearing aid to the earpiece 2 and the earplug 7 through the hose 21, thereby achieving a hearing aid effect.

[0047] Example 2: Reference Figure 6-Figure 7 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment. During the implementation of the first embodiment, it is found that the sealing ring 61 is elastic. The locking force of the first shell 11 and the second shell 12 after splicing only relies on the pressure between the outer locking plate 62 and the inner locking plate 63 by the sealing ring 61. The outer locking plate 62 and the inner locking plate 63 are not separated by friction, resulting in a small locking force between the first shell 11 and the second shell 12. The impact force generated when the hearing aid falls may cause the first shell 11 and the second shell 12 to separate, thereby damaging the hearing aid.

[0048] And the sealing ring 61 only seals the gap between the first shell 11 and the second shell 12 from the inside of the hearing aid housing 1. Sweat mixes with grease, dead skin cells, dust, etc. on the back of the ear to form dirt. The dirt mixed with sweat will still enter the gap between the first shell 11 and the second shell 12. When the sweat evaporates and the dirt dries, it will remain in the gap between the first shell 11 and the second shell 12. Since the gap is narrow, it is not easy to clean.

[0049] In order to solve the above problems, this embodiment is provided with a sealing shock-absorbing pad 611 that can absorb impact force while preventing sweat from flowing into the gap between the first shell 11 and the second shell 12, as well as a locking tooth 65 and a locking groove 64 that increase the locking force between the first shell 11 and the second shell 12.

[0050] A circle of sealing shock-absorbing pads 611 are also provided on the outer peripheral surface of the sealing ring 61, and the sealing shock-absorbing pads 611 are clamped by the end faces of the first shell 11 and the second shell 12. During the splicing process of the first shell 11 and the second shell 12, the bottom end of the sealing ring 61 is inserted into the accommodating ring groove 14, and the sealing shock-absorbing pads 611 on the side of the sealing ring 61 are placed on the end face of the second shell 12. When the first shell 11 and the second shell 12 are assembled, the end face of the first shell 11 will be pressed on the sealing shock-absorbing pads 611.

[0051] A locking groove 64 is provided on the side of the inner locking plate 63 facing the first shell 11, and a locking tooth 65 is provided on the side of the outer locking plate 62 facing the second shell 12. After the first shell 11 and the second shell 12 are spliced ​​together, the locking tooth 65 is inserted into the locking groove 64 to lock the first shell 11 and the second shell 12. The locking tooth 65 and the locking groove 64 increase the locking force between the first shell 11 and the second shell 12 to prevent the first shell 11 and the second shell 12 from falling apart when dropped.

[0052] By squeezing the sealing shock-absorbing pad 611 between the first shell 11 and the second shell 12, the gap between the end faces of the first shell 11 and the second shell 12 can be filled. The outermost edge of the sealing shock-absorbing pad 611 is flush with or exceeds the first shell 11 and the second shell 12. Sweat cannot flow into the gap between the first shell 11 and the second shell 12, and dirt cannot remain in the gap, thereby further improving the sealing performance.

[0053] Furthermore, since the end faces of the first shell 11 and the second shell 12 are separated by the sealing shock-absorbing pad 611, when the hearing aid falls, the first shell 11 and the second shell 12 will act on the sealing shock-absorbing pad 611 when they are slightly deformed, and the sealing shock-absorbing pad 611 can absorb part of the impact force generated by the fall through the deformable characteristics of the sealing shock-absorbing pad 611 to protect the hearing aid. The optimal sealing shock-absorbing pad 611 is a super-hydrophobic material, specifically polyurethane acrylate, and there is a gap of more than 150 between the sealing shock-absorbing pad 611 and the sealing ring 61. The angle of degrees is such that sweat and grease quickly flow down under the action of gravity after contacting the sealing shock-absorbing pad 611, thereby reducing the sweat hanging rate. The outer end of the sealing shock-absorbing pad 611 forms a columnar part, which contacts the first shell 11 and the second shell 12, and plays a role in supporting the first shell 11 and the second shell 12 when in use, and reduces the phenomenon of sweat infiltration and sweat adhesion. When falling occurs, the columnar part on the sealing shock-absorbing pad 611 can buffer the vibration generated, thereby achieving the purpose of overall protection.

[0054] Example 3: Reference Figure 8-Figure 12 , which is the third embodiment of the present invention. This embodiment is different from the second embodiment. During the implementation of the third embodiment, it is found that although the arrangement of the locking teeth 65 and the locking groove 64 improves the locking force of the first shell 11 and the second shell 12, due to the elastic characteristics of the sealing ring 61, the tightness of the connection between the inner locking plate 63 and the outer locking plate 62 is achieved by the elastic force of the sealing ring 61. If the deformation degree of the sealing ring 61 is small, resulting in a small rebound force, the extrusion pressure on the inner locking plate 63 and the outer locking plate 62 is reduced, resulting in a small locking degree of the bite between the locking teeth 65 and the locking groove 64, and the problem of falling off and causing the first shell 11 and the second shell 12 to separate will still occur. If the deformation degree of the sealing ring 61 is large, resulting in a large rebound force, although the extrusion pressure on the inner locking plate 63 and the outer locking plate 62 is increased, the locking degree of the bite between the locking teeth 65 and the locking groove 64 is improved, resulting in the problem that the first shell 11 and the second shell 12 are not easy to disassemble.

[0055] In order to solve the above problems, this embodiment provides an air flow channel 66 capable of adjusting the deformation degree of the sealing ring 61, which can improve the locking degree of the bite between the locking teeth 65 and the locking groove 64 to prevent the first shell 11 and the second shell 12 from falling apart, and also facilitate the disassembly of the first shell 11 and the second shell 12.

[0056] An air flow channel 66 is provided inside the sealing ring 61, and the locking teeth 65 and the locking groove 64 are flush with the height of the center of the air flow channel 66. A telescopic component 5 for injecting or extracting air into the air flow channel 66 is also installed in the second shell 12, wherein the knob 8 connected to the telescopic component 5 passes through the second shell 12.

[0057] The telescopic assembly 5 includes a cylinder 51 fixed on the second shell 12 and a piston head 52 sliding in the cylinder 51. The cylinder 51 is connected to a pipe connected to the air flow channel 66. The inner ring 54 connected to the piston head 52 passes through the cylinder 51. The inner ring 54 is threadedly connected to the transmission screw 55. The inner ring 54 is inserted into the outer ring 53. The port of the transmission screw 55 is meshed with the knob 8 through a bevel gear.

[0058] The outer ring 53 is fixed on the second housing 12 , and a guide groove is provided on the inner circumference of the outer ring 53 . A guide block inserted into the guide groove is fixed on the outer circumference of the inner ring 54 , which is used for the transmission screw 55 to rotate and drive the inner ring 54 and the piston head 52 to reciprocate.

[0059] The telescopic assembly 5 is provided to inject gas into or exhaust gas into the airflow channel 66 to change the pressure in the airflow channel 66. The knob 8 is rotated in two directions to change the rotation direction of the transmission screw 55, so that the inner ring 54 can reciprocate on the outer ring 53 to provide thrust for the movement of the piston head 52, thereby achieving the purpose of injecting gas into and exhausting gas from the airflow channel 66.

[0060] In this embodiment, the two side surfaces of the sealing ring 61 are fixed to the first housing 11 and the outer locking plate 62 respectively, and the airflow channel 66 shrinks to a "vertical line" shape when the airflow channel 66 is in the evacuated state. At this time, the sealing ring 61 near the airflow channel 66 will shrink inward. Since the outer locking plate 62 is set with an elastic plate, the contraction of the sealing ring 61 will drive the outer locking plate 62 to move toward the airflow channel 66, so that the locking teeth 65 are disengaged from the locking groove 64 to facilitate the disassembly of the first housing 11 and the second housing 12, and also facilitate the installation of the first housing 11 and the second housing 12. After the first housing 11 and the second housing 12 are installed , air is injected into the air flow channel 66, and the air flow channel 66 will be stretched open. The middle part of the air flow channel 66 is stretched to the maximum, and the upper and lower parts of the air flow channel 66 are stretched to the minimum. The sealing ring 61 expands and drives the outer locking plate 62 to move toward the inner locking plate 63 until the locking teeth 65 and the locking groove 64 are engaged. The upper part of the air flow channel 66 has a smaller deformation degree, and the sealing ring 61 can seal the gap between the first shell 11 and the second shell 12 from the inside of the hearing aid housing 1, and at the same time reduce the pressure on the gap between the first shell 11 and the second shell 12, thereby preventing the connection between the first shell 11 and the second shell 12 from being stretched outward.

[0061] Example 4: Reference Figure 13-Figure 16 , which is the fourth embodiment of the present invention. This embodiment is different from the previous three embodiments. Since sweat will flow into the gap between the first shell 11 and the second shell 12 that fit the ear, and the gap between the first shell 11 and the second shell 12 is narrow, the sweat will be retained in the gap due to the tension of water and cannot flow down, resulting in the problem of sweat hanging in the gap. The sweat hanging area of ​​the hearing aid housing 1 is in contact with the ear, and the sweat cannot be discharged in time, which makes it easy for bacteria to grow.

[0062] In order to solve the problem that the gap is prone to sweating, the end surfaces of the first shell 11 and the second shell 12 are improved, such as Fig.12 As shown, the end faces of the first shell 11 and the second shell 12 are not flat faces, but notches are provided on the end faces of the first shell 11 and the second shell 12. After the first shell 11 and the second shell 12 are spliced, an arc groove gap is formed, wherein the arc groove gap opening toward the outside of the hearing aid is large, and the arc groove gap opening toward the inside of the hearing aid is small. By changing the shape of the gap, sweat flows into the gap. Due to the larger opening of the arc groove gap, the tension of the sweat at the gap is destroyed, allowing the sweat to quickly fall along the arc groove gap to the bottom gap of the hearing aid housing 1, thereby preventing sweat from hanging in the gap position of the hearing aid where it fits the ear, reducing the growth of bacteria there.

[0063] As the sweat falls to the bottom gap of the hearing aid housing 1, the sweat easily accumulates at the bottom of the hearing aid housing 1. The sweat is mixed with grease, dead skin cells, dust, etc. on the back of the ear. When the sweat evaporates, the grease, dead skin cells, and dust dry to form dirt that remains in the bottom gap of the hearing aid housing 1 and contacts the sealing ring 61 at the bottom.

[0064] In order to solve the problem that dirt is easily accumulated in the gap at the bottom of the hearing aid housing 1, a non-flat surface is used on the end faces of the first shell 11 and the second shell 12, and the end faces of the first shell 11 and the second shell 12 are both provided with notches. After the first shell 11 and the second shell 12 are spliced, an arc groove gap is formed, wherein the middle diameter of the arc groove gap is large, and the upper and lower ends of the arc groove gap have small diameters; a collection protection component 10 is inserted into the arc groove gap at the bottom of the first shell 11 and the second shell 12, and the collection protection component 10 includes an anti-fall pad 101 And a collecting pipe 102, which is arranged along the center line of the inner wall of the anti-fall pad 101, and the collecting pipe 102 is inserted into the arc groove gap with a large diameter. A guide block with a small diameter inserted into the upper end of the arc groove gap is fixed on the top of the collecting pipe 102. The anti-fall pad 101 is also provided with a drainage hole connected to the collecting pipe 102, and the harder guide block is inserted into the narrow diameter at the upper end of the arc groove gap to provide support for the bottom of the first shell 11 and the second shell 12 to avoid squeezing the first shell 11 and the second shell 12 to cause the gap of the arc groove gap to change.

[0065] Among them, this embodiment sets the battery of the hearing aid at the bottom, which is used to adjust the counterweight of the hearing aid so that when the hearing aid falls, the bottom of the hearing aid will first contact the ground. This embodiment facilitates the replacement of the collecting and protecting component 10 through the plug-in collecting and protecting component 10. When the hearing aid falls, the anti-fall pad 101 first contacts the ground. The rubber anti-fall pad 101 is used to absorb part of the impact force to reduce damage to the hearing aid. The collecting tube 102 is embedded in the arc groove gap, and the sweat at the gap of the hearing aid shell flows into the collecting tube 102 and is then dispersed and discharged from the drainage hole to avoid the sweat gathering at a certain place at the bottom of the hearing aid and causing dirt accumulation.

[0066] In order to improve the locking degree of the splicing of the first shell 11 and the second shell 12, the locking groove 64 and the locking tooth 65 of the second embodiment can also be assembled, and the air flow channel 66 can be used to change the thickness of the sealing ring 61 to drive the locking tooth 65 to move to facilitate the assembly of the first shell 11 and the second shell 12.

[0067] By changing the gap of the hearing aid, sweat can be allowed to flow down quickly. With the pluggable collecting and protecting component 10, the impact force of the falling part of the hearing aid can be absorbed to reduce the damage to the hearing aid. The collecting tube 102 disperses the sweat flowing into the arc groove gap and discharges it from the drainage hole to prevent the sweat from gathering at a certain place at the bottom of the hearing aid and causing the problem of dirt accumulation. At the same time, the collecting and protecting component 10 is easy to disassemble for later replacement and cleaning.

[0068] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A binaural hearing aid with protective function, comprising a hearing aid housing (1), an earpiece (2) and a protective cover (3), wherein one end of the hearing aid housing (1) is connected to a plastic ear hook (4), one end of the plastic ear hook (4) is snapped onto the protective cover (3), a hose (21) extending from the earpiece (2) passes through the protective cover (3) and the plastic ear hook (4) and extends into the hearing aid housing (1), and an earplug (7) is further installed on the side of the earpiece (2), characterized in that: A sealing device (6) is provided in the hearing aid housing (1); the hearing aid housing (1) is formed by splicing a first housing (11) and a second housing (12); the sealing device (6) is provided at a gap position at a splicing location of end surfaces of the first housing (11) and the second housing (12), and is used to seal the gap between the end surfaces of the first housing (11) and the second housing (12); The sealing device (6) comprises an outer locking plate (62) fixed to the second shell (12) and an inner locking plate (63) fixed to the first shell (11), wherein the outer locking plate (62) and the inner locking plate (63) are arranged alternately, wherein, after the first shell (11) and the second shell (12) are spliced ​​together, one side of the outer locking plate (62) abuts against a side of the inner locking plate (63), and the other side of the outer locking plate (62) is in contact with the sealing ring (61), and the sealing ring (61) covers a gap between the first shell (11) and the second shell (12); A locking groove (64) is provided on the side of the inner locking plate (63) facing the first shell (11), and a locking tooth (65) is provided on the side of the outer locking plate (62) facing the second shell (12); after the first shell (11) and the second shell (12) are spliced ​​together, the locking tooth (65) is inserted into the locking groove (64) to lock the first shell (11) and the second shell (12); An air flow channel (66) is provided inside the sealing ring (61), and the locking teeth (65) and the locking groove (64) are flush with the center of the air flow channel (66). A telescopic component (5) for injecting or extracting air into the air flow channel (66) is also installed in the second shell (12), wherein a knob (8) connected to the telescopic component (5) passes through the second shell (12); The telescopic assembly (5) comprises a cylinder (51) fixed on the second housing (12) and a piston head (52) sliding in the cylinder (51); the cylinder (51) is connected to a pipe connected to the air flow channel (66); an inner ring (54) connected to the piston head (52) passes through the cylinder (51); the inner ring (54) is threadedly connected to a transmission screw (55); the inner ring (54) is inserted into an outer ring (53); and a port of the transmission screw (55) is meshed with a knob (8) via a bevel gear; The outer ring (53) is fixed on the second housing (12), a guide groove is provided on the inner circumferential surface of the outer ring (53), and a guide block inserted into the guide groove is fixed on the outer circumferential surface of the inner ring (54) for driving the screw rod (55) to rotate and drive the inner ring (54) and the piston head (52) to reciprocate.

2. A binaural hearing aid with protective function according to claim 1, characterized in that: The plastic ear hook (4) is composed of an upper half shell (41) and a lower half shell (42); the upper half shell (41) is fixed to a port of the first shell (11), and the lower half shell (42) is fixed to a port of the second shell (12); partitions (43) are fixed to the inner walls of the upper half shell (41) and the lower half shell (42); slots (44) are also provided at the ports of the upper half shell (41) and the lower half shell (42); the upper half shell (41) and the lower half shell (42) are snap-connected to form the plastic ear hook (4); the two partitions (43) are in close contact with each other and separate the interior of the plastic ear hook (4) into a first cavity and a second cavity; the upper half shell (41) is also provided with a sound receiving slot (411) communicating with the second cavity.

3. A binaural hearing aid with protective function according to claim 2, characterized in that: The protective sleeve (3) is fixed on the hose (21), and a clamping block (31) provided on the port of the protective sleeve (3) is inserted into the clamping slot (44).

4. A binaural hearing aid with protective function according to claim 3, characterized in that: The inner locking plate (63) and the outer locking plate (62) are respectively arranged along the edges of the first shell (11) and the second shell (12); the edges of the first shell (11) and the inner locking plate (63) form a locking ring groove (13); and the edges of the second shell (12) and the outer locking plate (62) form a receiving ring groove (14); and the sealing ring (61) is arranged in the receiving ring groove (14).

5. The binaural hearing aid with protective function according to claim 4, characterized in that: The end surfaces of the first shell (11) and the second shell (12) are non-flat surfaces, and the end surfaces of the first shell (11) and the second shell (12) are both provided with notches, and the first shell (11) and the second shell (12) are spliced ​​to form an arc groove gap, wherein the middle portion of the arc groove gap has a large diameter, and the upper and lower ends of the arc groove gap have small diameters; A collecting protection component (10) is inserted into the arc groove gap at the bottom of the first shell (11) and the second shell (12), the collecting protection component (10) comprising an anti-fall pad (101) and a collecting pipe (102), the collecting pipe (102) being arranged along the center line of the inner wall of the anti-fall pad (101), the collecting pipe (102) being inserted into the arc groove gap with a large diameter, a guide block with a small diameter inserted into the upper end of the arc groove gap being fixed at the top end of the collecting pipe (102), and a drainage hole communicating with the collecting pipe (102) is also arranged on the anti-fall pad (101).

6. A binaural hearing aid with protective function according to claim 5, characterized in that: A circle of sealing shock-absorbing pads (611) is also provided on the outer peripheral surface of the sealing ring (61), and the sealing shock-absorbing pads (611) are clamped by the end surfaces of the first shell (11) and the second shell (12).

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