A hearing aid with a magnetic suction design on a fishing line

Abstract

The present invention relates to the technical field of hearing aids, and in particular to a hearing aid with a magnetic suction design on a fishing line, comprising a hearing aid body, an ear mold arranged on one side of the hearing aid body, a winding roller arranged at one end of the inner cavity of the hearing aid body, a fishing line wound on the outer side of the winding roller, a suction ball arranged at one end of the fishing line, a magnetic block integrated inside the suction ball, and a locking mechanism, wherein the locking mechanism is arranged at one end of the hearing aid body, the locking mechanism comprises two locking plates, and a number of brake blocks are arranged on the inner wall of the locking plate. In the present invention, by embedding a spherical magnetic block at the end of the fishing line, the problem of the abrupt appearance and the occupation of the internal space of the traditional hearing aid magnetic suction device is solved, the smooth and beautiful appearance of the hearing aid is maintained, and the occupation of the internal space is avoided. At the same time, the spherical magnetic block is arranged at the end of the fishing line, so that when the hearing aid can be fixed on clothing, a backpack or other magnetic objects through magnetic suction, it is ensured that the hearing aid will not fall accidentally.

Description

Technical Field

[0001] The present invention relates to the technical field of hearing aids, and in particular to a hearing aid with a magnetic attraction design on a fishing line. Background Art

[0002] As an important device for assisting hearing, hearing aids play an indispensable role in modern society, especially for people with hearing loss. With the advancement of technology, rechargeable hearing aids have gradually become the mainstream of the market due to their convenience. This type of hearing aid is usually designed with a magnetic device so that users can easily place the hearing aid in the charging box when not in use, realizing the dual functions of automatic charging and storage.

[0003] However, the magnetic design of existing rechargeable hearing aids generally has the problem of balancing aesthetics and practicality. Specifically, the magnetic device is often installed directly on the bottom of the hearing aid housing to form a convex structure, which not only destroys the overall streamlined design of the hearing aid, but also affects the aesthetics of the product due to the significant difference in the gloss of the magnetic metal and the color of the housing material. If you try to build the magnet into the bottom of the housing to maintain a smooth appearance, it will inevitably take up valuable space inside the hearing aid, pose a challenge to the layout of internal components, and may even affect the performance and comfort of the hearing aid. If the magnetic design is completely abandoned, although the above-mentioned space and aesthetic problems can be avoided, it will significantly reduce the user experience, especially in the charging and storage process. Hearing aids without magnetic assistance are difficult to quickly and accurately locate and place in the charging box, which increases the complexity and inconvenience of operation. Summary of the invention

[0004] The object of the present invention is to provide a hearing aid with a magnetic attraction design on a fishing line to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A hearing aid with a magnetic attraction design on a fishing line, comprising

[0007] A hearing aid body, wherein an ear mold is arranged on one side of the hearing aid body, a winding roller is arranged at one end of the inner cavity of the hearing aid body, a fishing line is wound on the outer side of the winding roller, a suction ball is arranged at one end of the fishing line, and a magnetic block is integrated inside the suction ball;

[0008] A locking mechanism, which is arranged at one end of the hearing aid body, and includes two locking plates, the inner walls of which are provided with a number of brake blocks, and a locking ring is formed by the two locking plates, the fishing line passes through the inner wall of the locking ring, a collar is arranged on one side of the locking plate, and a connecting plate is arranged on one side of the collar;

[0009] The charging compartment is used to store and charge the hearing aid body. The charging compartment is provided with two groups of charging slots and placement slots. The charging slots match and dock with the hearing aid body, and the placement slots match and dock with the ear mold. A magnetic group is provided inside the charging compartment below the charging slots. The magnetic group consists of an auxiliary magnetic coil and a driving magnetic coil. An adjustment mechanism for controlling the distance between the auxiliary magnetic coil and the driving magnetic coil is also provided inside the charging compartment.

[0010] Preferably, the locking mechanism also includes a button, which is arranged on the outside of the hearing aid body, one end of the button is fixedly connected to a transmission bar, both ends of the transmission bar are provided with a transmission block, one side of the transmission block is fixedly connected to one end of the connecting plate, and the contact surfaces of the transmission bar and the transmission block are both arranged as mutually compatible inclined surfaces.

[0011] Preferably, the contact ends of the two collars are each provided with a connecting groove, and the inner wall of the connecting groove is provided with a spring, and the two collars are connected via the spring.

[0012] Preferably, sliding bars are provided at both ends of the transmission bar, and the contact surfaces between the transmission block and the transmission bar are provided with sliding grooves adapted to each other.

[0013] Preferably, a rotating shaft is provided on one side of the winding roller, a torsion spring is provided on the inner wall of the rotating shaft, and one end of the rotating shaft and the torsion spring are both connected to the inner wall of the hearing aid body.

[0014] Preferably, the adjustment mechanism includes a bolt and two screws, the bolt drives the screw to rotate, the top of the screw is fixedly connected to the bottom of the driving magnetic ring, and the bottom of the inner cavity of the charging bin is provided with a spiral groove that is compatible with the outer side of the screw, and the screw rotates along the inner wall of the spiral groove.

[0015] Preferably, the bolt is arranged at the bottom of the charging bin, a main pulley is arranged on the top of the bolt, the outer side of the main pulley is transmission-connected with two belt strips, the inner wall of the belt strip is transmission-connected with a secondary pulley, and a screw is arranged on the top of the secondary pulley.

[0016] Preferably, a telescopic rod is provided on the top of the secondary pulley, the top of the telescopic rod is fixedly connected to the bottom end of the screw rod, the telescopic rod consists of a rod body and a sleeve, a sliding groove is provided on the rod body along the length direction, a protruding slider is provided on the inner wall of the sleeve, the sleeve is sleeved on the rod body, the slider is engaged with the sliding groove, and the sleeve and the rod body are in a sliding fit.

[0017] Preferably, a Hall sensor is provided inside the charging compartment on one side of the charging slot, and a charging circuit for use with the Hall sensor is also provided inside the charging compartment.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In the present invention, by embedding a spherical magnetic block at the end of the fishing line, the problem of the conventional magnetic device of the hearing aid being awkward in appearance and occupying the internal space is solved, the smooth and beautiful appearance of the hearing aid is maintained, and the occupation of the internal space is avoided. At the same time, the spherical magnetic block is arranged at the end of the fishing line, so that the hearing aid can be fixed on clothing, backpacks or other magnetic objects through magnetic attraction, ensuring that the hearing aid will not be accidentally dropped or lost;

[0020] 2. In the present invention, the retractable design of the fishing line enables flexible adjustment of the position of the spherical magnetic block. The user can press a button to stop the locking device from locking the fishing line and adjust the length of the fishing line according to actual needs, thereby positioning the spherical magnetic block at the optimal adsorption position of clothing, backpacks or other magnetic objects, further improving the stability of the hearing aid during wearing and effectively preventing accidental dropping or loss.

[0021] 3. In the present invention, the magnetic attraction strength can be flexibly controlled by adjusting the distance between the magnets. When a stable connection is required, such as when carrying or moving the hearing aid, the user can operate the adjustment device to bring the magnets closer together to enhance the magnetic force, thereby ensuring a tighter and more reliable connection between the hearing aid and the charging box, effectively preventing the hearing aid from accidentally falling off during movement, and improving the safety and convenience of carrying. By reversely operating the adjustment device to increase the distance between the magnets and weaken the magnetic force accordingly, the hearing aid can be easily removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 is a schematic diagram of the overall structure of the hearing aid body of the present invention;

[0024] Figure 3 For the present invention Figure 2 Enlarged view of area A in the middle;

[0025] Figure 4 For the present invention Figure 3 The overall structural diagram of the locking mechanism;

[0026] Figure 5 It is a diagram showing the action state changes of the locking mechanism in the present invention;

[0027] Figure 6 It is a schematic diagram of the overall structure of the winding roller in the present invention;

[0028] Figure 7 This is a cross-sectional view of the overall structure of the charging bin in the present invention;

[0029] Figure 8 For the present invention Figure 7Schematic diagram of the overall structure of the middle adjustment mechanism;

[0030] In the figure: 1. hearing aid body; 11. ear mold; 12. suction ball; 13. fishing line; 14. locking mechanism; 141. button; 142. transmission strip; 143. transmission block; 144. connecting plate; 145. collar; 146. locking sleeve; 147. brake block; 148. spring; 15. winding roller; 151. rotating shaft; 152. torsion spring; 2. charging compartment; 21. charging slot; 211. auxiliary magnetic coil; 212. driving magnetic coil; 22. placement slot; 23. adjustment mechanism; 231. bolt; 232. main pulley; 233. belt strip; 234. secondary pulley; 235. telescopic rod; 236. screw; 24. Hall sensor. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0033] See also Figure 1-Figure 8 , the present invention provides a technical solution:

[0034] A hearing aid with a magnetic attraction design on a fishing line, comprising

[0035] A hearing aid body 1, an ear mold 11 is arranged on one side of the hearing aid body 1, a winding roller 15 is arranged at one end of the inner cavity of the hearing aid body 1, a fishing line 13 is wound on the outer side of the winding roller 15, a suction ball 12 is arranged at one end of the fishing line 13, and a magnetic block is integrated inside the suction ball 12;

[0036] The locking mechanism 14 is disposed at one end of the hearing aid body 1. The locking mechanism 14 includes two locking plates 146. The inner wall of the locking plate 146 is provided with a number of brake blocks 147. The two locking plates 146 form a locking ring. The fishing line 13 passes through the inner wall of the locking ring. A collar 145 is disposed on one side of the locking plate 146. A connecting plate 144 is disposed on one side of the collar 145.

[0037] The charging compartment 2 is used to store and charge the hearing aid body 1. Two groups of charging slots 21 and placement slots 22 are provided on the charging compartment 2. The charging slots 21 match and dock with the hearing aid body 1, and the placement slots 22 match and dock with the ear mold 11. A magnetic group is provided inside the charging compartment 2 below the charging slots 21. The magnetic group consists of an auxiliary magnetic circle 211 and a driving magnetic circle 212. An adjustment mechanism 23 for controlling the distance between the auxiliary magnetic circle 211 and the driving magnetic circle 212 is also provided inside the charging compartment 2.

[0038] In this embodiment, please refer to Figure 4-Figure 5 The locking mechanism 14 also includes a button 141, which is arranged on the outside of the hearing aid body 1. One end of the button 141 is fixedly connected to a transmission bar 142. Both ends of the transmission bar 142 are provided with a transmission block 143. One side of the transmission block 143 is fixedly connected to one end of the connecting plate 144. The contact surfaces of the transmission bar 142 and the transmission block 143 are both arranged as mutually adaptive inclined surfaces. In this embodiment, by pressing the button 141 on the outside of the hearing aid body 1, the transmission bar 142 can push the two transmission blocks 143 to increase the distance between the transmission blocks 143, thereby driving the connecting plate 144 and the ring 145 to increase the distance between them through the transmission block 143, thereby increasing the inner diameter of the locking ring composed of the two locking plates 146, so that the brake block 147 stops locking the fishing line 13, and the length of the fishing line 13 can be adjusted, and the position of the suction ball 12 can be adjusted.

[0039] In this embodiment, please refer to Figure 5 The contact ends of the two rings 145 are each provided with a connecting groove, and the inner wall of the connecting groove is provided with a spring 148, and the two rings 145 are connected by the spring 148. In this embodiment, when the two rings 145 are pushed apart from each other, the spring 148 will be deformed by the force, so that when the thrust disappears, the spring 148 rebounds, so that the two rings 145 return to their original positions, and the inner diameter of the locking ring becomes smaller again, and the fishing line 13 continues to be locked, realizing the self-locking function.

[0040] In this embodiment, please refer to Figure 5 Slide bars are provided at both ends of the transmission bar 142, and mutually matching slide grooves are provided on the contact surface between the transmission block 143 and the transmission bar 142. In this embodiment, the slide groove and the slide bar design on the contact surface between the transmission bar 142 and the transmission block 143 can prevent the transmission bar 142 from being disconnected from the transmission block 143 when it moves along the inclined surface of the transmission block 143. At the same time, the design of the slide groove and the slide bar can reduce the contact surface and the friction, thereby making the transmission effect of the transmission bar 142 and the transmission block 143 better.

[0041] In this embodiment, please refer to Figure 6A rotating shaft 151 is provided on one side of the winding roller 15, and a torsion spring 152 is provided on the inner wall of the rotating shaft 151. One end of the rotating shaft 151 and the torsion spring 152 are connected to the inner wall of the hearing aid body 1. In this embodiment, when the suction ball 12 is pulled by external force to lengthen the length of the fishing line 13, the winding roller 15 rotates under the action of the tension and drives the rotating shaft 151 to rotate. The rotation of the rotating shaft 151 causes the torsion spring 152 to be deformed by the force. Therefore, when the suction ball 12 stops being pulled, the torsion spring 152 loses the pressure and returns to its original state. Under the action of the elastic force, the winding roller 15 rotates, and the fishing line 13 is retracted and wrapped around its outer side, so that the suction ball 12 can achieve the function of rapid recovery.

[0042] In this embodiment, please refer to Figure 7-Figure 8 The adjusting mechanism 23 includes a bolt 231 and two screws 236. The bolt 231 drives the screw 236 to rotate. The top of the screw 236 is fixedly connected to the bottom of the driving magnetic circle 212. The bottom of the inner cavity of the charging bin 2 is provided with a spiral groove that matches the outer side of the screw 236. The screw 236 rotates along the inner wall of the spiral groove. In this embodiment, the bolt 231 is rotated by external force to drive the screw 236 to rotate along the inner wall of the spiral groove. Since the outer side of the screw 236 matches the spiral groove, by controlling the rotation direction of the screw 236, the screw 236 can be controlled to move upward or downward, thereby controlling the driving magnetic circle 212 to move upward or downward. By moving the driving magnetic circle 212 upward, the distance between it and the auxiliary magnetic circle 211 becomes larger, and the adsorption effect on the suction ball 12 becomes weaker. When the driving magnetic circle 212 moves downward, the distance between it and the auxiliary magnetic circle 211 becomes smaller, and the adsorption effect on the suction ball 12 becomes stronger.

[0043] In this embodiment, please refer to Figure 7-Figure 8 The bolt 231 is arranged at the bottom of the charging bin 2, and a main pulley 232 is arranged on the top of the bolt 231. The outer side of the main pulley 232 is connected to two belt strips 233 for transmission, and the inner wall of the belt strip 233 is connected to a secondary pulley 234 for transmission. A screw 236 is arranged on the top of the secondary pulley 234. In this embodiment, when the bolt 231 is rotated by external force, the two belt strips 233 can be driven to rotate through the main pulley 232, thereby driving the two secondary pulleys 234 to rotate through the belt strip 233, and driving the two screws 236 to rotate through the secondary pulley 234, thereby simultaneously controlling the suction force of the two charging slots of the charging bin to the hearing aid.

[0044] In this embodiment, please refer to Figure 8A telescopic rod 235 is provided on the top of the secondary pulley 234, and the top of the telescopic rod 235 is fixedly connected to the bottom end of the screw 236. The telescopic rod 235 consists of a rod body and a sleeve. A sliding groove is provided on the rod body along the length direction, and a protruding slider is provided on the inner wall of the sleeve. The sleeve is sleeved on the rod body, and the slider is engaged with the sliding groove. The sleeve and the rod body are in sliding cooperation. In this embodiment, the telescopic rod 235 can transmit torque while, when the screw 236 moves up and down, the telescopic rod 235 is synchronously extended and retracted with the rise and fall of the screw 236, so as to adjust the position of the driving magnetic ring 212.

[0045] In this embodiment, please refer to Figure 7 A Hall sensor 24 is provided inside the charging compartment 2 on one side of the charging slot 21, and a charging circuit used in conjunction with the Hall sensor 24 is also provided inside the charging compartment 2. In this embodiment, when the hearing aid body 1 is correctly placed in the area of ​​the charging slot 21, the suction ball 12 approaches the Hall sensor 24, triggering the hearing aid body 1 to generate a signal, and then the charging circuit controls the start of charging for the hearing aid body 1, ensuring that charging only starts when the hearing aid body 1 is correctly placed, thereby avoiding invalid charging in a non-contact state or possible safety hazards.

[0046] Working principle of the present invention:

[0047] Step 1. When the hearing aid needs to be charged, the button 141 is pressed by external force so that the button 141 pushes the transmission bar 142 to move backward. Since the contact surfaces of the two ends of the transmission bar 142 and the two transmission blocks 143 are respectively set as mutually compatible inclined surfaces, when the transmission bar 142 moves backward, the distance between the two transmission blocks 143 gradually increases, and the transmission blocks 143 drive the connecting plate 144 to move away from each other. The connecting plate 144 moves away from each other to pull the spring 148 to deform it, and the distance between the two locking plates 146 increases, so that the inner diameter of the locking ring composed of the two locking plates 146 increases, so that the brake block 147 is not in contact with the outer side of the fishing line 13. When the fishing line 13 is no longer fixed, the torsion spring 152 loses pressure and returns to its original state. Under the elastic force of the torsion spring 152, the rotating shaft 151 drives the winding roller 15 to rotate, and the fishing line 13 is gathered and collected to the outside of the winding roller 15, so that the length of the fishing line 13 outside the hearing aid body 1 gradually shortens until the suction ball 12 contacts one end of the hearing aid body 1. At this time, the hearing aid body 1 can be placed in the inner cavity of the charging slot 21. Since the suction ball 12 and the auxiliary magnetic circle 211 and the driving magnetic circle 212 attract each other, the user can easily and accurately place the hearing aid body 1 in the charging slot 21, and charge the hearing aid body 1 through the charging compartment 2.

[0048] Step 2, when the hearing aid is used, by pressing the button 141 according to the working principle of step 1, when the button 141 is pressed by external force, the fishing line 13 is no longer fixed, at this time, by pulling the suction ball 12, the fishing line 13 drives the winding roller 15 to rotate, and the torsion spring 152 is deformed by force, and the winding roller 15 is rotated by pulling the suction ball 12, so that the fishing line 13 is separated from the outside of the winding roller 15, so that the length of the fishing line 13 is lengthened, and when the suction ball 12 is adjusted to a suitable position, stop pressing the button 141, at this time, the spring 148 loses pressure and rebounds, driving the two rings 145 to reduce the distance between them and re-contact them together, driving the locking plate 146 to reduce its inner diameter, so that the brake block 147 is in contact with the outside of the fishing line 13 again, and the brake block 147 clamps the outside of the fishing line 13, so that the position of the fishing line 13 is locked, and the suction ball 12 is fixed at the adjusted position, and the user can adjust the position of the suction ball 12 according to actual needs;

[0049] Step 3, turn the bolt 231 through external force, so that the bolt 231 drives the main pulley 232 to rotate, and the main pulley 232 drives the two belt strips 233 to rotate, and the belt strip 233 drives the two secondary pulleys 234 to rotate, and the secondary pulley 234 drives the telescopic rod 235 to rotate, and the telescopic rod 235 drives the screw 236 to rotate. Since the bottom of the inner cavity of the charging slot 21 is provided with a spiral groove that matches the spiral pattern on the outer side of the screw 236, by controlling the rotation direction of the screw 236, the screw 236 can be moved up or down along the spiral groove, and by controlling the screw 236 to move upward, the screw 236 pushes the driving magnetic ring 212 to move upward, so that the driving magnetic ring The distance between the auxiliary magnetic circle 212 and the auxiliary magnetic circle 211 becomes larger. Since the auxiliary magnetic circle 211 and the driving magnetic circle 212 form a magnetic force group, the magnetic fields of the auxiliary magnetic circle 211 and the driving magnetic circle 212 will overlap with each other to form a composite magnetic field. When the distance between the auxiliary magnetic circle 211 and the driving magnetic circle 212 gradually increases, the magnetic force decreases with the increase of distance, thereby weakening the suction force on the suction ball 12, and the user can easily take the earphone out of the charging slot 21. By controlling the rotation direction of the screw 236, the distance between the driving magnetic circle 212 and the auxiliary magnetic circle 211 gradually decreases, and the magnetic force increases with the decrease of distance, thereby strengthening the adsorption force on the suction ball 12, so that the hearing aid body 1 is placed more firmly in the charging slot 21.

[0050] The above shows and describes the basic principles, main features and advantages of the present invention. The present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A hearing aid with a magnetic attraction design on a fishing line, characterized in that: include A hearing aid body (1), wherein an ear mold (11) is arranged on one side of the hearing aid body (1), a winding roller (15) is arranged at one end of the inner cavity of the hearing aid body (1), a fishing line (13) is wound on the outer side of the winding roller (15), a suction ball (12) is arranged at one end of the fishing line (13), and a magnetic block is integrated inside the suction ball (12); A locking mechanism (14), the locking mechanism (14) being arranged at one end of the hearing aid body (1), the locking mechanism (14) comprising two locking plates (146), the inner wall of the locking plate (146) being provided with a number of brake blocks (147), the two locking plates (146) forming a locking ring, the fishing line (13) passing through the inner wall of the locking ring, a collar (145) being arranged on one side of the locking plate (146), and a connecting plate (144) being arranged on one side of the collar (145); A charging compartment (2) is used to store and charge a hearing aid body (1); the charging compartment (2) is provided with two groups of charging slots (21) and placement slots (22); the charging slots (21) are matched and docked with the hearing aid body (1); the placement slots (22) are matched and docked with the ear mold (11); a magnetic group is provided inside the charging compartment (2) below the charging slots (21); the magnetic group consists of an auxiliary magnetic circle (211) and a driving magnetic circle (212); and an adjustment mechanism (23) for controlling the distance between the auxiliary magnetic circle (211) and the driving magnetic circle (212) is also provided inside the charging compartment (2).

2. A hearing aid with a magnetic attraction design on a fishing line according to claim 1, characterized in that: The locking mechanism (14) further comprises a button (141), wherein the button (141) is arranged on the outside of the hearing aid body (1), one end of the button (141) is fixedly connected to a transmission bar (142), both ends of the transmission bar (142) are provided with a transmission block (143), one side of the transmission block (143) is fixedly connected to one end of a connecting plate (144), and the contact surfaces of the transmission bar (142) and the transmission block (143) are arranged as mutually compatible inclined surfaces.

3. The hearing aid with magnetic attraction design on the fishing line according to claim 1, characterized in that: The contact ends of the two sleeve rings (145) are each provided with a connection groove, and the inner wall of the connection groove is provided with a spring (148), and the two sleeve rings (145) are connected via the spring (148).

4. The hearing aid with magnetic attraction design on the fishing line according to claim 2, characterized in that: Slide bars are provided at both ends of the transmission bar (142), and mutually matching slide grooves are provided on the contact surfaces of the transmission block (143) and the transmission bar (142).

5. The hearing aid with magnetic attraction design on the fishing line according to claim 1, characterized in that: A rotating shaft (151) is provided on one side of the winding roller (15), a torsion spring (152) is provided on the inner wall of the rotating shaft (151), and one end of the rotating shaft (151) and the torsion spring (152) are both connected to the inner wall of the hearing aid body (1).

6. The hearing aid with magnetic attraction design on the fishing line according to claim 1, characterized in that: The adjustment mechanism (23) comprises a bolt (231) and two screw rods (236); the bolt (231) drives the screw rod (236) to rotate; the top end of the screw rod (236) is fixedly connected to the bottom of the driving magnetic ring (212); the bottom of the inner cavity of the charging compartment (2) is provided with a spiral groove that is mutually compatible with the outer side of the screw rod (236); and the screw rod (236) rotates along the inner wall of the spiral groove.

7. The hearing aid with magnetic attraction design on the fishing line according to claim 6, characterized in that: The bolt (231) is arranged at the bottom of the charging compartment (2), a main pulley (232) is arranged on the top of the bolt (231), the outer side of the main pulley (232) is transmission-connected to two belt strips (233), the inner wall of the belt strip (233) is transmission-connected to a secondary pulley (234), and a screw rod (236) is arranged on the top of the secondary pulley (234).

8. The hearing aid with magnetic attraction design on the fishing line according to claim 7, characterized in that: A telescopic rod (235) is arranged on the top of the secondary pulley (234), the top end of the telescopic rod (235) is fixedly connected to the bottom end of the screw rod (236), the telescopic rod (235) is composed of a rod body and a sleeve, the rod body is provided with a sliding groove along the length direction, the inner wall of the sleeve is provided with a protruding sliding block, the sleeve is sleeved on the rod body, the sliding block is meshed with the sliding groove, and the sleeve and the rod body are in sliding fit.

9. The hearing aid with magnetic attraction design on the fishing line according to claim 7, characterized in that: A Hall sensor (24) is provided inside the charging compartment (2) on one side of the charging slot (21), and a charging circuit for use with the Hall sensor (24) is also provided inside the charging compartment (2).

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