CN108650609B

CN108650609B - Control device for output modulation in a hearing instrument

Info

Publication number: CN108650609B
Application number: CN201810588891.5A
Authority: CN
Inventors: 张力
Original assignee: Dongguan University of Technology
Current assignee: Dongguan University of Technology
Priority date: 2018-06-08
Filing date: 2018-06-08
Publication date: 2020-03-10
Anticipated expiration: 2038-06-08
Also published as: CN108650609A

Abstract

Control device of output modulation in hearing instrument, comprising a main body, the preceding through-hole of seting up of main part, the through-hole communicates with each other with the main part is inside, the several blind hole is seted up to the inner wall of through-hole, the interval between every two adjacent blind holes equals, the inner of blind hole all communicates with each other with the through-hole is inside, the guiding hole is seted up respectively to the outer end of blind hole, the guiding hole respectively with the central line collineation of the blind hole that corresponds, several cylindrical groove is seted up respectively to the preceding inside of main part, cylindrical groove and blind hole one-to-one, cylindrical groove respectively with the central line collineation of the blind hole that corresponds. Through the mutual cooperation between first gear, third gear, crank, connecting rod, rack, second gear and the movable rod, every rotation is a pivot once, can make the adhesive tape swing once, can attract infant's attention to the infant is restless and cry and scream when medical personnel adjust the mode, is favorable to the infant to cooperate and accomplishes the inspection, and high efficiency accomplishes the inspection, helps the accuracy of inspection result.

Description

Control device for output modulation in a hearing instrument

Technical Field

The invention belongs to the technical field of listening devices, and particularly relates to a control device for output modulation in a hearing instrument.

Background

The hearing screening instrument is widely applied to newborn hearing screening, infant condition directional reflex, child and adult hearing tests, hearing aid fitting and adjustment, morning hearing aid examination, hearing recovery evaluation, collective speech training machine fitting and adjustment and F hearing aid fitting. But current hearing sieve looks up appearance all uses the button to adjust output mode, if when the regulation interval is great, medical personnel need press the button many times, and because the button adopts prevents mistake touch design, required power is great when pressing, press for a long time and can lead to medical personnel's finger ache, lead to the cramp even, hearing sieve looks up the appearance and still adopts liquid crystal display, nevertheless in order to reduce the volume of hearing sieve looks up appearance, liquid crystal display is less usually, whether medical personnel watch when adjusting successfully, lead to eye fatigue easily.

Disclosure of Invention

The present invention provides a control device for output modulation in a hearing instrument to address the deficiencies of the prior art.

The invention is realized by the following technical scheme:

a control device for output modulation in a hearing instrument comprises a main body, wherein the front of the main body is provided with a through hole, the through hole is communicated with the inside of the main body, the inner wall of the through hole is provided with a plurality of blind holes, the distance between every two adjacent blind holes is equal, the inner ends of the blind holes are communicated with the inside of the through hole, the outer ends of the blind holes are respectively provided with a guide hole, the guide holes are respectively collinear with the central line of the corresponding blind holes, the front of the main body is respectively provided with a plurality of cylindrical grooves, the cylindrical grooves are in one-to-one correspondence with the blind holes, the cylindrical grooves are respectively collinear with the central lines of the corresponding blind holes, each guide hole is respectively communicated with the cylindrical grooves and the insides of the blind holes, the outer ends of the blind holes are respectively and fixedly connected with one end of a first spring, the other end of the first spring is respectively and fixedly connected with the periphery of a, the periphery of the ball is fixedly connected with one end of an insulating rod, the insulating rod sequentially penetrates through the corresponding first spring, the guide hole and the annular metal plate respectively, the other end of the insulating rod is fixedly provided with a conducting strip respectively, the conducting strips can slide along the corresponding cylindrical grooves respectively, the conducting strips can be in contact fit with the corresponding annular metal plate respectively, a power supply, a rotary switch and a control device for output modulation are fixedly arranged in the main body respectively, the control device for output modulation is connected with the rotary switch and a power supply circuit respectively and simultaneously, a rotating shaft penetrates through the through hole, the periphery of the rotating shaft is in contact fit with the inner wall of the through hole, the periphery of the ball can be in contact fit with the periphery of the rotating shaft respectively and simultaneously, the rear end of the rotating shaft is fixedly connected with an input shaft of the rotary switch, the periphery of the rotating shaft is provided with a groove, one of the ball can be clamped into the groove, an, The annular metal plate is connected with a power circuit, a first gear is fixedly arranged on the periphery of a rotating shaft, the first gear is positioned in a main body, arc grooves are respectively formed in the front surface and the back surface of the main body, the arc grooves are communicated with the inside of the main body, a movable rod is arranged in the main body, the front end and the back end of the movable rod respectively penetrate through the corresponding arc grooves, the movable rod can slide along the arc grooves, the periphery of the movable rod is respectively and simultaneously in contact fit with the inner walls of the arc grooves, second gears are respectively and fixedly arranged on the front side and the back side of the movable rod, the second gears are respectively positioned in the main body, racks are respectively arranged below the second gears, the racks are parallel to each other and are respectively and simultaneously meshed with the corresponding second gears, guide devices based on the racks are respectively and fixedly arranged on the front side and the back side of the bottom surface of the inner wall of the main body, the racks can respectively and horizontally move along, the adhesive tape passes through the inslot from the bar, pass through mounting bracket and bearing installation connecting axle in the main part, the preceding of connecting axle perpendicular to main part, both ends difference fixed mounting third gear around the connecting axle, first gear and the third gear engagement in the place ahead, the preceding eccentric department of place ahead third gear is through the articulated articulate one end of connecting of articulated shaft, the eccentric department in the back of rear third gear is through the articulated same articulate one end of connecting of articulated shaft, the articulate other end articulates the one end of connecting rod respectively, the other end of connecting rod articulates the one end of connecting the rack that corresponds respectively.

In the control device for output modulation in the hearing instrument, the knob is fixedly mounted at the front end of the rotating shaft, and the periphery of the knob is provided with the anti-skid grains.

As above the controlling means of output modulation among the hearing instrument, the bottom surface both sides of arc wall set up the draw-in groove respectively, the bottom surface of draw-in groove is the lower extreme of fixed connection second spring respectively, the upper end of second spring is the bottom surface of fixed connection arc seat respectively, the cambered surface of arc seat all faces the arc wall that corresponds, the cambered surface of arc seat can contact the cooperation with the periphery of movable rod respectively.

In the above control device for output modulation in a hearing instrument, the guide device is a U-shaped seat, the U-shaped seats are respectively and fixedly mounted on the bottom surface of the inner wall of the main body through a fixing device, the openings of the U-shaped seats are all upward, the racks respectively penetrate through the corresponding U-shaped seats, and the peripheries of the racks are respectively in contact fit with the inner walls of the corresponding U-shaped seats.

The control device for output modulation in the hearing instrument is characterized in that the liquid crystal display is fixedly arranged on the top surface of the main body.

According to the control device for output modulation in the hearing instrument, the top surface of the rubber strip is provided with the limiting groove, the bottom surface of the limiting groove is communicated with the outside, the bottom surface of the strip-shaped through groove is fixedly connected with the lower end of the limiting rod, the limiting rod penetrates through the limiting groove, and the upper end of the limiting rod is fixedly connected with the top surface of the strip-shaped through groove.

The invention has the advantages that: the user can adjust the rotary switch when rotating the rotating shaft, the rotary switch is connected with the circuit of the control device for output modulation, thereby adjusting the output mode of the device, the first gear and the rotating shaft synchronously rotate, the first gear is meshed with the corresponding third gear to drive the corresponding third gear to rotate, the two third gears are fixedly connected through the rotating shaft, thereby leading the two third gears to synchronously rotate, the third gears are respectively hinged with one end of a crank through a hinged shaft, the other end of the crank is respectively hinged with one end of a connecting rod, the other end of the connecting rod is respectively hinged with the corresponding rack, the third gear respectively forms a crank-connecting rod mechanism with the corresponding crank and the connecting rod, thereby driving the rack to horizontally reciprocate, the rack is meshed with the second gear to drive the second gear to reciprocate, the adhesive tape is soft material, the second gear can drive the adhesive tape to vertically swing through reciprocating rotation, can attract infant's attention, reduce infant's the probability of crying or the random movement, be convenient for medical personnel test it, and during the rotation pivot, under the elastic force effect of first spring, one of them ball can block into to the recess in, first spring extends this moment, the ball is to the blind hole outward movement, through insulator spindle fixed connection between conducting strip and the ball, thereby can drive the conducting strip towards annular metal sheet motion, until conducting strip and annular metal sheet contact, LED lamp circuit switches on and begins work, can indicate medical personnel this time to adjust effective, after this device uses the completion, medical personnel hold between the front and back both ends of movable rod with the hand respectively, make the movable rod upwards slide along the arc wall, in entering the main part until the major part of adhesive tape, can prevent that the adhesive tape from damaging, the life of extension adhesive tape, and can reduce the shared space of this device. The invention can control the rotary switch by rotating the rotating shaft, the rotary switch is connected with the circuit of the control device for output modulation, thereby being capable of adjusting the output mode of the device, overcoming the defect of key adjustment in the traditional structure, leading a user to be more convenient and labor-saving to adjust to a proper mode, improving the working efficiency and shortening the test time, leading the adjustment of the rotating shaft to be more rhythmic by the mutual matching among the first spring, the ball and the groove when the rotating shaft rotates, leading medical personnel to judge the approximate interval of the required output mode by rhythm, further adjusting to the required mode, reducing the time required by mode adjustment and improving the adjustment efficiency, leading the LED lamp to twinkle once by the mutual matching among the annular metal plate, the insulating rod, the conducting plate and the LED lamp for each adjustment of the rotating shaft, thereby prompting the user to successfully adjust, avoid the illusion to lead to the user mistake to consider to adjust the completion, medical personnel need not frequently to look over the adjustment state, avoid medical personnel's eye fatigue, through first gear, the third gear, the crank, the connecting rod, the rack, mutually support between second gear and the movable rod, the pivot once rotates, can make the adhesive tape swing once, can attract infant's attention, in order to avoid infant's vexed and crying when medical personnel mode of regulation, be favorable to infant's cooperation to accomplish the inspection, the inspection is accomplished to high efficiency, help the accuracy of inspection result.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention; fig. 2 is a schematic view of the internal structure of the main body 1; FIG. 3 is an enlarged view of section I of FIG. 1; fig. 4 is a partial enlarged view of ii of fig. 1.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

A control device for output modulation in a hearing instrument comprises a main body 1, wherein the front of the main body 1 is provided with a through hole 2, the through hole 2 is communicated with the inside of the main body 1, the inner wall of the through hole 2 is provided with a plurality of blind holes 3, the distance between every two adjacent blind holes 3 is equal, the inner ends of the blind holes 3 are communicated with the inside of the through hole 2, the outer ends of the blind holes 3 are respectively provided with a guide hole 4, the guide holes 4 are respectively collinear with the central lines of the corresponding blind holes 3, the front of the main body 1 is respectively provided with a plurality of cylindrical grooves 5, the cylindrical grooves 5 are in one-to-one correspondence with the blind holes 3, the cylindrical grooves 5 are respectively collinear with the central lines of the corresponding blind holes 3, each guide hole 4 is respectively communicated with the cylindrical grooves 5 and the insides of the blind holes 3, the outer ends of the blind holes 3 are respectively and fixedly connected with one end of a first spring 6, the round balls 7 can be respectively positioned in the corresponding blind holes 3, the inner ends of the cylindrical grooves 5 are respectively fixedly provided with annular metal plates 8, the annular metal plates 8 are respectively collinear with the central lines of the corresponding guide holes 4, the peripheries of the round balls 7 are fixedly connected with one ends of insulating rods 9, the insulating rods 9 respectively penetrate through the corresponding first springs 6, the guide holes 4 and the annular metal plates 8 in sequence, the other ends of the insulating rods 9 are respectively fixedly provided with conducting strips 10, the conducting strips 10 can respectively slide along the corresponding cylindrical grooves 5, the conducting strips 10 can respectively contact and match with the corresponding annular metal plates 8, a power supply, a rotary switch and a control device for output modulation are respectively and fixedly arranged in the main body 1, the control device for output modulation is respectively and simultaneously connected with the rotary switch and a power supply circuit, the through hole 2 penetrates through a rotating shaft 11, the peripheries of the rotating shaft 11 are in contact and match with the inner walls of the through holes 2, the peripheries of the round balls 7 can respectively and simultaneously, the rear end of a rotating shaft 11 is fixedly connected with an input shaft of a rotary switch, a groove 12 is formed in the periphery of the rotating shaft 11, one round ball 7 can be clamped into the groove 12, an LED lamp 13 is fixedly installed on the top surface of a main body 1, the LED lamp 13 is respectively connected with a conducting plate 10, an annular metal plate 8 and a power circuit, the LED lamp 13 is connected with the conducting plates 10, the annular metal plates 8 and the power supply through a parallel circuit, each conducting plate 10 and the corresponding annular metal plate 8 are equivalent to a switch, when one conducting plate 10 is in contact with the corresponding annular metal plate 8, the switch is equivalent to be closed, the LED lamp 13, the power supply, the corresponding conducting plate 10 and the corresponding annular metal plate 8 form a series circuit, the LED lamp 13 is electrified and lightened, a main switch is fixedly installed on the front surface of the main body 1 and is in circuit connection with the LED lamp 13, when the main switch is disconnected, no matter whether the conducting plate 10 is in contact, the LED lamps 13 are all not in operation, energy can be saved when the device is not used, a first gear 14 is fixedly arranged on the periphery of the rotating shaft 11, the first gear 14 is positioned in the main body 1, arc-shaped grooves 15 are respectively formed in the front and back surfaces of the main body 1, the arc-shaped grooves 15 are communicated with the inside of the main body 1, a movable rod 16 is arranged in the main body 1, the front end and the back end of the movable rod 16 respectively penetrate through the corresponding arc-shaped grooves 15, the movable rod 16 can slide along the arc-shaped grooves 15, the periphery of the movable rod 16 is respectively contacted and matched with the inner walls of the arc-shaped grooves 15 at the same time, second gears 17 are respectively fixedly arranged on the front side and the back side of the movable rod 16, the second gears 17 are positioned in the main body 1, racks 18 are respectively arranged below the second gears 17, the racks 18 are parallel to each other, the racks 18 are respectively and are respectively meshed with the corresponding second gears 17 at, the racks 18 can respectively horizontally move along the corresponding guide devices, a strip-shaped through groove 19 is formed in one side of the main body 1, one side of an adhesive tape 20 is fixedly connected to the periphery of the movable rod 16, the adhesive tape 20 penetrates through the strip-shaped through groove 19, a connecting shaft 21 is installed in the main body 1 through an installation frame and a bearing, the connecting shaft 21 is perpendicular to the front face of the main body 1, third gears 22 are fixedly installed at the front end and the rear end of the connecting shaft 21 respectively, the first gear 14 is meshed with the third gear 22 in the front, the diameter of the third gear 22 is far smaller than that of the first gear 14, the front eccentric position of the front third gear 22 is hinged to one end of a crank 23 through a hinged shaft, the back eccentric position of the rear third gear 22 is hinged to one end of the same crank 23 through a hinged shaft, the other end of the crank 23 is hinged to one end of a connecting rod 24 respectively. The user can adjust the rotary switch when rotating the rotating shaft 11, because the rotary switch is connected with the circuit of the control device for output modulation, the output mode of the device can be adjusted, and the first gear 14 rotates synchronously with the rotating shaft 11, the first gear 14 is meshed with the corresponding third gear 22 and can drive the corresponding third gear 22 to rotate, the two third gears 22 are fixedly connected through the rotating shaft 21, so that the two third gears 22 rotate synchronously, the third gears 22 are respectively hinged with one end of the crank 23 through the hinge shaft, the other end of the crank 23 is respectively hinged with one end of the connecting rod 24, the other end of the connecting rod 24 is respectively hinged with the corresponding rack 18, the third gear 22 respectively forms a crank-connecting rod mechanism with the corresponding crank 23 and the connecting rod 24, so that the rack 18 can be driven to horizontally reciprocate, the rack 18 is meshed with the second gear 17 and can drive the second gear 17 to reciprocate, the adhesive tape 20 is made of soft materials, the second gear 17 rotates in a reciprocating manner to drive the adhesive tape 20 to swing up and down, the attention of an infant can be attracted, the probability of crying or disordering of the infant is reduced, medical staff can test the adhesive tape, when the rotating shaft 11 rotates, one round ball 7 can be clamped into the groove 12 under the action of the elastic force of the first spring 6, the first spring 6 extends at the moment, the round ball 7 moves towards the blind hole 3, the conducting plate 10 is fixedly connected with the round ball 7 through the insulating rod 9, the conducting plate 10 can be driven to move towards the annular metal plate 8 until the conducting plate 10 is in contact with the annular metal plate 8, the circuit of the LED lamp 13 is conducted to start working, the medical staff can be prompted to take effect the adjustment, when the medical staff use the device, the medical staff respectively pinch the front end and the rear end of the movable rod 16 with hands, the movable rod 16 slides upwards along the arc-shaped groove 15 until most of the adhesive tape 20, can prevent that adhesive tape 20 from damaging, prolong adhesive tape 20's life, and can reduce the shared space of this device. The invention can control the rotary switch by rotating the rotating shaft 11, the rotary switch is connected with the circuit of the control device for output modulation, thereby adjusting the output mode of the device, overcoming the defect of key adjustment in the traditional structure, leading a user to more conveniently and more laborsavingly adjust the rotary switch to a proper mode, improving the working efficiency and shortening the test time, leading the adjustment of the rotating shaft 11 to be more rhythmic by the mutual matching among the first spring 6, the ball 7 and the groove 12 when the rotating shaft 11 rotates, leading medical personnel to judge the approximate interval of the required output mode by rhythm, further adjusting the rotary switch to the required mode, reducing the time required by mode adjustment and improving the adjustment efficiency, leading the LED lamp 13 to twinkle once by each adjustment of the rotating shaft 11 through the mutual matching among the annular metal plate 8, the insulating rod 9, the conducting plate 10 and the LED lamp 13, adjust successfully with the suggestion user, avoid the illusion to lead to the user mistake to think about adjusting the completion, medical personnel need not frequently to look over the regulation state, avoid medical personnel's eye fatigue, through first gear 14, third gear 22, crank 23, connecting rod 24, rack 18, mutually support between second gear 17 and the movable rod 16, pivot 11 once rotates, can make adhesive tape 20 swing once, can attract infant's attention, in order to avoid infant's vexation and crying when medical personnel adjust the mode, be favorable to the infant to cooperate and accomplish the inspection, high efficiency accomplishes the inspection, help the accuracy of inspection result.

Specifically, in order to facilitate people to rotate the rotating shaft 11, the knob 25 is fixedly installed at the front end of the rotating shaft 11, and the anti-skid threads are formed on the periphery of the knob 25. The rotating shaft 11 can be rotated by rotating the knob 25, so that people can save more labor when rotating the rotating shaft 11, and the anti-slip lines can increase the friction force between the hands of people and the knob 25, so that slipping when rotating the knob 25 is prevented.

Specifically, in order to limit the position of the movable rod 16, the clamping grooves 26 are respectively formed in two sides of the bottom surface of the arc-shaped groove 15, the bottom surface of the clamping groove 26 is respectively and fixedly connected with the lower end of the second spring 27, the upper end of the second spring 27 is respectively and fixedly connected with the bottom surface of the arc-shaped seat 28, the arc surface of the arc-shaped seat 28 faces towards the corresponding arc-shaped groove 15, and the arc surface of the arc-shaped seat 28 can be respectively in contact fit with the periphery of the movable rod 16. As shown in fig. 4, the arc seat 28 can limit the movable rod 16 at the bottom of the arc groove 15, and the movable rod 16 cannot slide upwards along the arc groove 15 without external force, so that the rubber strip 20 is prevented from retracting into the strip-shaped through groove 19 when in use, and a user holds the front end and the rear end of the movable rod 16 with hands to enable the movable rod 16 to slide upwards along the arc groove 15, and the arc seat 28 can enter the clamping groove 26, so that the second spring 27 contracts, and the movable rod 16 can slide smoothly.

Further, in order to guide the rack 18 simply and effectively, the guide device described in this embodiment is a U-shaped seat 29, the U-shaped seats 29 are respectively fixedly mounted on the bottom surface of the inner wall of the main body 1 through a fixing device, the openings of the U-shaped seats 29 are all upward, the racks 18 respectively pass through the corresponding U-shaped seats 29, and the peripheries of the racks 18 are respectively in contact fit with the inner walls of the corresponding U-shaped seats 29. The structure is easy to manufacture and install, and the U-shaped seat 29 and the second gear 17 are matched to ensure that the rack 18 can stably move horizontally.

Furthermore, in order to facilitate the medical staff to record the test data, the liquid crystal display is fixedly installed on the top surface of the main body 1. Through the mode that liquid crystal display medical personnel can take notes the test and choose for use, make things convenient for the doctor to summarize the inspection data of examinee.

Furthermore, in order to prevent the rubber strip 20 from entering the main body 1, the top surface of the rubber strip 20 according to this embodiment is provided with a limiting groove 30, the bottom surface of the limiting groove 30 is communicated with the outside, the bottom surface of the strip-shaped through groove 19 is fixedly connected with the lower end of a limiting rod 31, the limiting rod 31 penetrates through the limiting groove 30, and the upper end of the limiting rod 31 is fixedly connected with the top surface of the strip-shaped through groove 19. The outer periphery of the limiting rod 31 can be in contact fit with the outer side of the limiting groove 30, and the maximum displacement of the rubber strip 20 can be limited, so that the rubber strip 20 is prevented from entering the main body 1.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. Control device for output modulation in a hearing instrument, characterized by: comprises a main body (1), a through hole (2) is arranged in front of the main body (1), the through hole (2) is communicated with the inside of the main body (1), a plurality of blind holes (3) are arranged on the inner wall of the through hole (2), the distance between every two adjacent blind holes (3) is equal, the inner ends of the blind holes (3) are communicated with the inside of the through hole (2), guide holes (4) are respectively arranged at the outer ends of the blind holes (3), the guide holes (4) are respectively collinear with the central lines of the corresponding blind holes (3), a plurality of cylindrical grooves (5) are respectively arranged in front of the main body (1), the cylindrical grooves (5) are in one-to-one correspondence with the blind holes (3), the cylindrical grooves (5) are respectively collinear with the central lines of the corresponding blind holes (3), each guide hole (4) is respectively communicated with the cylindrical groove (5) and the inside of the blind hole (3), the outer ends of the, the other end of the first spring (6) is respectively and fixedly connected with the periphery of a round ball (7), the round balls (7) can be respectively positioned in corresponding blind holes (3), the inner end of a cylindrical groove (5) is respectively and fixedly provided with an annular metal plate (8), the annular metal plates (8) are respectively collinear with the central lines of corresponding guide holes (4), the periphery of the round ball (7) is fixedly connected with one end of an insulating rod (9), the insulating rod (9) respectively and sequentially penetrates through the corresponding first spring (6), the corresponding guide holes (4) and the annular metal plates (8), the other end of the insulating rod (9) is respectively and fixedly provided with a conducting strip (10), the conducting strips (10) can respectively slide along the corresponding cylindrical grooves (5), the conducting strips (10) can respectively and be in contact fit with the corresponding annular metal plates (8), a power supply, a rotary switch and a control device for output modulation are respectively and fixedly arranged in the main body (1), the control device for output modulation is respectively and simultaneously connected with a rotary switch and a power circuit, a rotating shaft (11) penetrates through a through hole (2), the periphery of the rotating shaft (11) is in contact fit with the inner wall of the through hole (2), the periphery of a round ball (7) can be respectively and simultaneously in contact fit with the periphery of the rotating shaft (11), the rear end of the rotating shaft (11) is fixedly connected with an input shaft of the rotary switch, a groove (12) is formed in the periphery of the rotating shaft (11), one round ball (7) can be clamped into the groove (12), an LED lamp (13) is fixedly installed on the top surface of a main body (1), the LED lamp (13) is respectively connected with a conducting plate (10), an annular metal plate (8) and the power circuit, a first gear (14) is fixedly installed on the periphery of the rotating shaft (11), the first gear (14) is positioned in the main body (1), arc-shaped grooves (15) are respectively formed in the front surface and the rear surface of the main body (1), a movable rod (16) is arranged in the main body (1), the front end and the rear end of the movable rod (16) respectively penetrate through the corresponding arc-shaped grooves (15), the movable rod (16) can slide along the arc-shaped grooves (15), the periphery of the movable rod (16) is respectively and simultaneously in contact fit with the inner walls of the arc-shaped grooves (15), the front side and the rear side of the movable rod (16) are respectively and fixedly provided with a second gear (17), the second gears (17) are respectively positioned in the main body (1), racks (18) are respectively arranged below the second gears (17), the racks (18) are parallel to each other, the racks (18) are respectively and simultaneously meshed with the corresponding second gears (17), the front side and the rear side of the bottom surface of the inner wall of the main body (1) are respectively and fixedly provided with guide devices based on the racks (18), the racks (18) can respectively and horizontally move along the corresponding guide devices, one side of the main body (1) is provided, the periphery of movable rod (16) is fixed connection one side of adhesive tape (20), adhesive tape (20) pass in strip through groove (19), pass through mounting bracket and bearing installation connecting axle (21) in main part (1), connecting axle (21) perpendicular to the front of main part (1), both ends are fixed mounting third gear (22) respectively around connecting axle (21), first gear (14) and third gear (22) meshing in the place ahead, the preceding off-centre department of place ahead third gear (22) passes through the articulated one end of articulated connection crank (23), the back off-centre department of back third gear (22) passes through the articulated one end of connecting the same crank (23) of articulated shaft hinge, the other end of crank (23) articulates the one end of connecting rod (24) respectively, the other end of connecting rod (24) articulates the one end of connecting corresponding rack (18) respectively.

2. Control device for output modulation in a hearing instrument according to claim 1, characterised in that: the front end of the rotating shaft (11) is fixedly provided with a knob (25), and anti-skid grains are arranged on the periphery of the knob (25).

3. Control device for output modulation in a hearing instrument according to claim 1, characterised in that: draw-in groove (26) are seted up respectively to the bottom surface both sides of arc wall (15), the lower extreme of bottom surface difference fixed connection second spring (27) of draw-in groove (26), the bottom surface of the upper end difference fixed connection arc seat (28) of second spring (27), the cambered surface of arc seat (28) all faces arc wall (15) that correspond, the cambered surface of arc seat (28) can respectively with the periphery contact cooperation of movable rod (16).

4. Control device for output modulation in a hearing instrument according to claim 1, characterised in that: the guide device is a U-shaped seat (29), the U-shaped seat (29) is fixedly installed on the bottom surface of the inner wall of the main body (1) through a fixing device, openings of the U-shaped seats (29) face upwards, the racks (18) penetrate through the corresponding U-shaped seats (29) respectively, and the peripheries of the racks (18) are in contact fit with the inner walls of the corresponding U-shaped seats (29) respectively.

5. Control device for output modulation in a hearing instrument according to claim 1, characterised in that: and the liquid crystal display screen is fixedly arranged on the top surface of the main body (1).

6. Control device for output modulation in a hearing instrument according to claim 1, characterised in that: the top surface of adhesive tape (20) set up spacing groove (30), the bottom surface of spacing groove (30) communicates with each other with the external world, the bottom surface fixed connection gag lever post (31) of the trough (19) is passed through to the bar, gag lever post (31) pass from the limiting groove (30), the upper end fixed connection bar of gag lever post (31) passes through the top surface of trough (19).