CN111083612A

CN111083612A - Elastic sheet, bone conduction loudspeaker and bone conduction ear-wearing type equipment

Info

Publication number: CN111083612A
Application number: CN202010062733.3A
Authority: CN
Inventors: 朱达云
Original assignee: Shenzhen Chuangxiang Listening Technology Co Ltd
Current assignee: Shenzhen Chuangxiang Listening Technology Co Ltd
Priority date: 2020-01-19
Filing date: 2020-01-19
Publication date: 2020-04-28
Also published as: WO2021143115A1

Abstract

The invention discloses a spring plate which comprises an inner ring body and connecting arms, wherein the connecting arms are fixedly connected to the inner ring body and extend outwards. Compared with the elastic sheet in the prior art, the elastic sheet does not have an outer ring, the structure is simpler, the size is relatively smaller, the dynamic range is larger, the stroke is longer during vibration, and the vibration stroke is longer and better due to the correlation between the vibration stroke and the low-frequency performance, so that the elastic sheet has good bass performance. The invention also discloses a bone conduction speaker, which is provided with the elastic sheet, the tail end of the connecting arm of the elastic sheet is fixed on the magnetic unit through a supporting piece or directly fixed on the magnetic unit, and the structure is simplified; therefore, the bone conduction speaker has the characteristics of simple structure, easiness in assembly and maintenance, miniaturization and light weight. The invention also discloses bone conduction ear-wearing equipment which is provided with the bone conduction loudspeaker. The bone conduction ear-worn device has the advantage of miniaturization.

Description

Elastic sheet, bone conduction loudspeaker and bone conduction ear-wearing type equipment

Technical Field

The invention belongs to the technical field of speakers, and particularly relates to a spring plate, a bone conduction speaker and bone conduction ear-wearing equipment.

Background

Bone conduction is a means of sound conduction. The bone conduction loudspeaker converts the audio signal into mechanical vibration with different frequencies, and transmits sound waves through skull, bone labyrinth, inner ear lymph fluid transmission, spiral organ, auditory nerve and auditory center of a human body. Bone conduction eliminates many steps of acoustic wave transmission relative to the classical way of acoustic wave transmission by diaphragm generation. Earphones using such a sound wave transmission method, i.e., bone conduction earphones, are now popular and widely used.

Existing bone conduction speakers typically have a spring. The elastic sheet plays a role of elastic support. The conventional spring plate has an inner ring and an outer ring. The spring plate occupies a large space, so that the volume of the bone conduction speaker is large, and the requirement of miniaturization cannot be met.

Disclosure of Invention

The invention aims to provide a spring plate, a bone conduction speaker and bone conduction ear-wearing equipment, and aims to solve the technical problem that the volume of the bone conduction speaker is larger due to larger occupied space of the spring plate in the prior art.

In order to achieve the above object, the present invention provides a spring plate, including:

an inner ring body; and

and the connecting arms are fixedly connected to the inner ring body and extend outwards.

Optionally, the number of the connecting arms is at least two, and at least two of the connecting arms are fixedly connected to the outer periphery of the inner ring body.

Optionally, the connecting arm comprises a connecting portion and a radial arm portion; the connecting part is fixedly arranged on the outer periphery of the inner ring body and extends outwards along the radial direction of the inner ring body; the rotation arm portion extends in the circumferential direction of the inner ring body, and one end of the rotation arm portion is fixedly connected to the tail end of the connecting portion.

Optionally, the connecting portion is in a circular arch shape or an arc shape, and the arc-shaped connecting portion extends along the axial direction of the inner ring body;

or the end part of the rotating arm part connected with the connecting part is arc-shaped and extends along the axial direction of the inner ring body.

Optionally, the connecting arms are fixedly connected to the outer periphery of the inner ring body in a radial or spiral arm shape.

The present invention also provides a bone conduction speaker, comprising:

a magnetic unit having a magnetic gap formed therein;

the bone conduction speaker further includes:

the elastic sheet is suspended on the magnetic unit, and the connecting arm is fixed on the magnetic unit through a supporting piece or directly fixed on the magnetic unit;

the voice coil is arranged on the lower surface of the elastic sheet and extends into the magnetic gap; and

the conducting piece is arranged on the upper surface of the elastic piece.

Optionally, the support comprises a number of support columns; the supporting column is fixedly arranged on the magnetic unit;

or the support piece also comprises a support ring, the support column is fixedly arranged on the support ring, and the support ring is arranged on the magnetic unit.

Optionally, the support column comprises a support column lower part and a support column upper part arranged on the top surface of the support column lower part; the tail end of the connecting arm is provided with a through hole, the upper portion of the supporting column penetrates through the through hole, and the tail end of the connecting arm is limited on the top surface of the lower portion of the supporting column.

Optionally, one end of the connecting arm is fixedly connected to the magnetic unit, and the other end of the connecting arm extends upward and is fixedly connected to the inner ring body, and the inner ring body is suspended.

Optionally, the bone conduction speaker further comprises:

the magnetic unit and the elastic sheet are contained in the shell, and the conducting piece extends out of the shell.

Optionally, the two supporting pieces are accommodated in the shell, and one of the two supporting pieces is arranged between the magnetic unit and the lower surface of the elastic sheet; the other supporting piece is arranged between the shell and the upper surface of the elastic piece.

The invention also provides bone conduction ear-wearing equipment which is provided with the elastic sheet.

One or more technical solutions of the elastic sheet, the bone conduction speaker and the bone conduction ear-worn device provided by the embodiment of the present invention at least have one of the following technical effects:

1. compared with the elastic sheet in the prior art, the elastic sheet has the advantages that the elastic sheet does not have an outer ring, the structure is simpler, the size is relatively smaller, the dynamic range is larger, the stroke during vibration is longer, and the longer the vibration stroke is, the better the low-frequency performance is, and therefore the elastic sheet has good bass performance;

2. the bone conduction speaker has the elastic sheet, so that the bone conduction speaker has the characteristics of simple structure, easiness in disassembly and assembly, miniaturization and light weight, and the low-frequency performance is widened while the miniaturization is realized.

3. The bone conduction ear-worn device comprises a bone conduction earphone and a bone conduction hearing aid; the bone conduction ear-wearing type equipment with the elastic sheet correspondingly has the advantages of miniaturization, portability and comfortable wearing, and can realize a new wearing mode, such as being placed in narrow spaces of an external auditory canal, an auricle and the like.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a spring plate according to embodiment 1 of the present invention.

Fig. 2 is a schematic structural diagram of a spring plate according to embodiment 2 of the present invention.

Fig. 3 is a schematic structural diagram of a spring plate according to embodiment 3 of the present invention.

Fig. 4 is a schematic structural diagram of a spring plate according to embodiment 4 of the present invention.

Fig. 5 is a schematic structural diagram of a spring plate according to embodiment 5 of the present invention.

Fig. 6 is a schematic structural diagram of a spring plate according to embodiment 6 of the present invention.

Fig. 7 is a schematic structural diagram of a spring plate according to embodiment 7 of the present invention.

Fig. 8 is a schematic structural diagram of a spring plate according to embodiment 8 of the present invention.

Fig. 9 is a schematic structural diagram of a spring plate according to embodiment 9 of the present invention.

Fig. 10 is a schematic structural diagram of a spring plate according to embodiment 10 of the present invention.

Fig. 11 is a schematic structural diagram of a spring plate according to embodiment 11 of the present invention.

Fig. 12 is a schematic structural diagram of a bone conduction speaker according to embodiment 12 of the present invention.

Fig. 13 is a schematic structural diagram of a bone conduction speaker according to embodiment 14 of the present invention.

Fig. 14 is a schematic structural view of a supporting member according to embodiment 14 of the present invention.

Fig. 15 is a cross-sectional view taken along line a-a shown in fig. 14.

Fig. 16 is a schematic structural diagram of a bone conduction speaker according to embodiment 16 of the present invention.

Fig. 17 is a schematic structural diagram of a bone conduction speaker according to embodiment 17 of the present invention.

Fig. 18 is a schematic structural diagram of a bone conduction speaker according to embodiment 18 of the present invention.

Fig. 19 is a schematic structural diagram of a bone conduction speaker according to embodiment 19 of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the embodiments of the present invention, and should not be construed as limiting the invention.

Example 1

As shown in fig. 1, the elastic sheet 20a provided in this embodiment includes an inner ring 21a and connecting arms 22a, and the connecting arms 22a are fixedly connected to the inner ring 21a and extend outward. Compared with the elastic sheet in the prior art, the elastic sheet 20a has no outer ring, the structure is simpler, the size is relatively smaller, the dynamic range is larger, the stroke is longer during vibration, and the longer the vibration stroke is, the better the low-frequency performance is, and therefore the elastic sheet has good bass performance.

The number of the connecting arms 22a is three, and the three connecting arms 22a are fixedly connected to the outer periphery of the inner ring body 21 a.

The connecting arm 22a includes a connecting portion 221a and a radial arm portion 222 a. The connecting portion 221a is fixedly disposed on an outer peripheral edge of the inner ring 21a and extends outward along a radial direction of the inner ring 21 a. The inner ring 21a has a circular shape, and the arm portion 222a extends in the circumferential direction of the inner ring 21a and has one end fixedly connected to the distal end of the connecting portion 221 a. The connecting arm 22a has the advantages of good supporting performance and good fixing effect.

Example 2

The present embodiment is different from embodiment 1 in that: referring to fig. 2, the elastic sheet 20b of the present embodiment includes an inner ring 21b and a plurality of straight connecting arms 22 b. The connecting arms 22b are fixedly connected to the outer periphery of the inner ring 21b in a radial shape. The elastic sheet 20b has the characteristics of simple shape and easy processing.

The rest of this embodiment is the same as embodiment 1, and the features not explained in this embodiment are explained by embodiment 1, which is not described again here.

Example 3

The present embodiment is different from embodiment 1 in that: referring to fig. 3, the elastic piece 20c provided in this embodiment includes an inner ring 21c and a plurality of arc-shaped connecting arms 22 c. The connecting arm 22c is fixedly connected to the outer periphery of the inner ring 21c in a radial arm shape.

Example 4

The present embodiment is different from embodiment 1 in that: referring to fig. 4, the elastic piece 20d provided in the present embodiment includes a triangular inner ring 21d and a plurality of arc-shaped connecting arms 22 d. The connecting arm 22d is fixedly connected to the outer periphery of the inner ring 21d in a radial arm shape.

Example 5

The present embodiment is different from embodiment 1 in that: referring to fig. 5, the elastic piece 20e of the present embodiment includes a triangular inner ring 21e and a plurality of straight bar-shaped connecting arms 22 e. The connecting arms 22e are fixedly connected to the outer periphery of the inner ring 21e in a radial shape.

Example 6

The present embodiment is different from embodiment 1 in that: referring to fig. 6, the elastic piece 20f provided in the present embodiment includes a square inner ring 21f and a plurality of arc-shaped connecting arms 22 f. The connecting arm 22f is fixedly connected to the outer periphery of the inner ring 21f in a radial arm shape.

Example 7

The present embodiment is different from embodiment 1 in that: referring to fig. 7, in the elastic sheet 20h provided in the present embodiment, the connecting portion 221h is in a circular arch shape. The connecting part of dome shape atress performance is better, is difficult for deformation.

Example 8

The present embodiment is different from embodiment 1 in that: referring to fig. 8, in the elastic sheet 20i provided in the present embodiment, the connecting portion 221i is arc-shaped, and the arc-shaped connecting portion 221i extends along the axial direction of the inner ring 21 i. The arc-shaped connecting portion 221i can save lateral space, make the lateral dimension of the elastic sheet 20i smaller, and provide stress performance.

Example 9

The present embodiment is different from embodiment 1 in that: referring to fig. 9, in the elastic sheet 20j provided in this embodiment, an end portion of the rotation arm portion 222j connected to the connecting portion 221j is arc-shaped and extends along the axial direction of the inner ring 21 j. The radial arm 222j can save lateral space, reduce the lateral size of the spring plate 20j, and provide the stress performance.

Example 10

The present embodiment is different from embodiment 1 in that: referring to fig. 10, in the elastic sheet 20k provided in the present embodiment, the peripheries of the four connecting arms 22k are square.

Example 11

The present embodiment is different from embodiment 1 in that: referring to fig. 11, in the elastic sheet 20l provided in the present embodiment, the periphery of the four connecting arms 22l is in a track shape.

Example 12

As shown in fig. 12, the bone conduction speaker provided in this embodiment includes a magnetic unit 10a, the elastic sheet 20a provided in embodiment 1, a support 30, a voice coil 40, and a conductive element 50. The magnetic unit 10a has a magnetic gap 13 formed therein. The elastic sheet 20a is suspended above the magnetic unit 10 a. The distal end of the connecting arm 22a is fixed to the magnet unit 10a by the support 30. The spring plate 20a serves to support the voice coil 40 and the conductive member 50. The elastic sheet 20a is a conductive elastic sheet, which is made of a composite conductive material and is formed with a circuit thereon, and positive and negative electrode pads are further provided on the surface thereof. The voice coil 40 is electrically connected with the conductive elastic sheet, the conductive elastic sheet is connected with an external circuit, an electrical structure for supplying power to the voice coil 40 does not need to be additionally designed, and the structure is simplified.

The voice coil 40 is disposed on the lower surface of the elastic sheet 20a and extends into the magnetic gap 13. The connection relationship between the voice coil 40 and the elastic sheet 20a is fixed connection. The voice coil 40 is energized to react with the magnetic field in the magnetic gap 13 to generate vibration.

The conductive element 50 is disposed on the upper surface of the elastic sheet 20 a. The connection relationship between the conductive element 50 and the elastic sheet 20a is fixed connection. The vibration generated by the voice coil 40 is transmitted to the conductive member 50 through the resilient piece 20 a. The conductor 50 is in contact with a contact portion of a human body, and transmits audio through the principle of bone conduction.

The elastic sheet 20a of the bone conduction speaker includes an inner ring 21a and a plurality of connecting arms 22 a. The end of the connecting arm 22a of the spring 20a is fixed on the magnetic unit 10a by the support 30, and the fixing structure is further simplified. The bone conduction speaker has the elastic sheet 20a, so that the bone conduction speaker has the characteristics of simple structure, easiness in disassembly and assembly, miniaturization, small size and light weight, and widens the low-frequency performance while realizing the miniaturization.

Referring to fig. 1 and 12, the supporting member 30 includes a supporting column, and the supporting column is fixed on the magnetic unit 10 a. Specifically, a hole is formed in the magnetic unit 10a, and the support pillar is fixedly mounted in the hole in a welding manner. The support member 30 has an advantage of simple structure, and is advantageous for reducing the volume of the product. The end of the connecting arm 22a is provided with a through hole 2221, the supporting column 32 passes through the through hole 2221, and the connecting arm 22a is limited and fixed on the supporting member 30.

Referring to fig. 12, the magnet unit 10a includes a U-iron 11 and a first magnet 12. The first magnet 12 functions to generate a magnetic field. The U-shaped iron 11 has the functions of magnetic conduction and magnetic leakage prevention, and can also be used as a supporting shell, so that the structure is further simplified. The U-shaped iron 11 is provided with a U-shaped iron bottom wall 111, and the periphery of the U-shaped iron bottom wall 111 extends upwards to form a U-shaped iron side wall 112. The first magnet 12 is a columnar magnet, one magnetic pole of which is fixed in the middle of the U-shaped iron bottom wall 111, and the other magnetic pole of which is provided with a first washer 121 a. The first washer 121a functions as a magnetic conductor. The magnetic gap 13 is an annular gap formed by the side surface of the first magnet 12 and the U-iron side wall 112.

Referring to fig. 12, an installation groove 1123 is formed at the upper portion of the U-shaped iron side wall 112, and the supporting member 30 is fixedly disposed in the installation groove 1123, which has an advantage of compact structure.

Example 13

This embodiment provides a bone conduction ear-worn device having the bone conduction speaker provided in embodiment 12. The bone conduction ear-worn device is a bone conduction headset.

Example 14

The present embodiment is different from embodiment 12 in that:

referring to fig. 13 to 15, the bone conduction speaker further includes a housing 60, the magnetic unit 10b, the supporting member 30 and the elastic sheet 20 are accommodated in the housing 60, and the conductive sheet 50 extends out of the housing 60. The housing 60 serves to support and prevent leakage of magnetic flux.

The supporting members 30, 30' are accommodated in the housing, and two of the supporting members 30 are disposed between the magnetic unit 10b and the lower surface of the resilient plate 20. Another supporting member 30' is disposed between the housing 60 and the upper surface of the resilient plate 20. The support 30 comprises a support ring 31 and three support columns 32. The support ring 31 is disposed on the magnetic unit 10a, and the support pillar 32 is fixedly disposed on the support ring 31. Specifically, the connection relationship between the supporting column 32 and the supporting ring 31 is integrally formed. The two supporting members 30, 30' are matched to suspend the elastic sheet 20.

The supporting post 32 comprises a supporting post lower portion 321 and a supporting post upper portion 322 disposed on the top surface of the supporting post lower portion 321, and the diameter of the supporting post upper portion 322 is smaller than that of the supporting post lower portion 321, so that when the supporting post upper portion 322 passes through the through hole 2221 at the end of the connecting arm 22a, the end of the connecting arm 22a is limited on the top surface of the supporting post lower portion 321 to be suspended.

The magnetic unit 10b of the bone conduction speaker provided in the present embodiment includes a first T-iron 14 and a second magnet 15. The first T-iron 14 includes a T-iron base 141 and a magnetic conductive column 142 fixedly disposed in the middle of the T-iron base 141. The first T iron 14 plays a role in magnetic conduction and magnetic leakage prevention. The second magnet 15 is a ring magnet, one magnetic pole of which is fixedly arranged on the T-iron base 141, and the other magnetic pole of which is provided with a second washer 151. The second washer 151 plays a role of magnetic conduction. The magnetic gap 13 is an annular gap formed by the inner peripheral surface of the second magnet 15 and the side surface of the magnetic conductive column 142.

The rest of this embodiment is the same as embodiment 12, and the features not explained in this embodiment are explained by embodiment 12, which is not described again here.

Example 15

This embodiment provides a bone conduction ear-worn device having the bone conduction speaker provided in embodiment 14. The bone conduction ear-worn device is a bone conduction hearing aid.

Example 16

The present embodiment is different from embodiment 14 in that:

referring to fig. 16, the magnetic unit 10c of the bone conduction speaker provided in this embodiment includes a third magnet 16, a fourth magnet 17 and a lower plate 18. Specifically, the magnetic unit 10c has a double-magnet structure, and has an advantage of high magnetic field strength. The third magnet 16 is a cylindrical magnet, one magnetic pole of which is fixedly arranged on the lower pole plate 18, and the other magnetic pole of which is provided with a third washer 161. The lower pole plate 18 plays a role in preventing magnetic leakage, and the third washer 161 plays a role in magnetic conduction. The fourth magnet 17 is a ring magnet, one magnetic pole of which is fixedly arranged on the lower pole plate 18, and the other magnetic pole of which is provided with a fourth washer 171. The fourth washer 171 plays a role of magnetic conduction. The magnetic gap 13 is an annular gap formed by surrounding the side surface of the third magnet 16 and the inner peripheral surface of the fourth magnet 17.

The rest of this embodiment is the same as embodiment 14, and the features that are not explained in this embodiment are all explained by embodiment 14, which is not described again here.

Example 17

The present embodiment is different from embodiment 14 in that:

referring to fig. 17, the bone conduction speaker of the present embodiment includes a magnetic unit 10b, a spring plate 20g, a voice coil 40, a conductive element 50, and a housing 60. The elastic piece 20g is suspended above the magnetic unit 10b and includes an inner ring 21g and a plurality of connecting arms 22 g. The connecting arm 22g is fixedly connected to the inner ring 21g and extends outward, and the end of the connecting arm 22g is directly fixed to the magnetic unit 10 b. Since the bone conduction speaker does not require a support member by directly fixing the connection arm 22g to the magnet unit 10b, it has a simpler structure, a smaller volume, a lighter weight, and a lower material cost.

One end of the connecting arm 22g is fixedly connected to the magnetic unit 10b, and the other end thereof extends upward and is fixedly connected to the periphery of the inner ring 21g, and the inner ring 21g is suspended. Specifically, the end of the connecting arm 22g is fixed between the housing 60 and the second washer 151 by welding.

Example 18

Referring to fig. 18, the difference between the present embodiment and embodiment 12 is: the bone conduction speaker provided by the present embodiment includes a magnetic unit 10d, a lower spring 20h, an upper spring 20i, a voice coil 40, a conductor 50, and a housing 60. The magnet unit 10d includes a second T-iron and a second magnet provided on the second T-iron. The bottom of the T-iron is connected to the lower spring plate 20h, and the periphery of the lower spring plate 20h is fixedly connected to the edge of the bottom opening of the housing 60. The voice coil 40 is disposed around the periphery of the second magnet, the top of the voice coil is fixedly connected to the bottom surface of the upper elastic sheet 20i, and the periphery of the upper elastic sheet 20i is fixedly connected to the edge of the top opening of the housing 60 through a pillar 70. The conductive element 50 is disposed on the top surface of the upper elastic sheet 20 i. The bone conduction speaker is of an internal magnet type.

Example 19

Referring to fig. 19, the difference between the present embodiment and embodiment 18 is: the voice coil 40 provided by this embodiment is fixedly connected to the upper elastic piece 20i through a connecting post 41, the connecting post 41 penetrates through the upper elastic piece 20i, and the conducting element 50 is fixedly arranged on the connecting post 41. The connection post 41 serves to connect the respective parts and conduct electricity, simplifying the circuit structure. The magnetic unit 10e is provided with a through hole 19 at the center thereof.

The rest of this embodiment is the same as embodiment 18, and the features that are not explained in this embodiment are all explained by embodiment 18, which is not described again here.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. An elastic sheet, comprising:

an inner ring body; and

2. The shrapnel of claim 1, characterized in that the number of the connecting arms is at least two, and at least two connecting arms are fixedly connected to the outer periphery of the inner ring body.

3. A shrapnel according to claim 1 or 2, characterized in that the connecting arm comprises a connecting part and a radial arm part; the connecting part is fixedly arranged on the outer periphery of the inner ring body and extends outwards along the radial direction of the inner ring body; the rotation arm portion extends in the circumferential direction of the inner ring body, and one end of the rotation arm portion is fixedly connected to the tail end of the connecting portion.

4. A shrapnel according to claim 3, characterized in that the connecting part is in the shape of a circular arch or an arc, and the arc-shaped connecting part extends along the axial direction of the inner ring body;

5. An elastic sheet according to claim 1 or 2, wherein the connecting arms are fixedly connected to the outer periphery of the inner ring body in a radial or radial arm shape.

6. A bone conduction speaker, comprising:

a magnetic unit having a magnetic gap formed therein;

it is characterized by also comprising:

the shrapnel of any one of claims 1 to 5, which is suspended on the magnetic unit, and the connecting arm is fixed on the magnetic unit through a supporting piece or directly fixed on the magnetic unit;

the conducting piece is arranged on the upper surface of the elastic piece.

7. The bone conduction speaker of claim 6, wherein the support comprises a number of support posts; the supporting column is fixedly arranged on the magnetic unit;

8. The bone conduction speaker of claim 7, wherein the support post comprises a support post lower portion and a support post upper portion provided on a top surface of the support post lower portion; the tail end of the connecting arm is provided with a through hole, the upper portion of the supporting column penetrates through the through hole, and the tail end of the connecting arm is limited on the top surface of the lower portion of the supporting column.

9. The bone conduction speaker as claimed in claim 6, wherein one end of the connecting arm is fixedly connected to the magnetic unit, and the other end of the connecting arm extends upward and is fixedly connected to the inner ring, and the inner ring is suspended.

10. The bone conduction speaker of claim 6, further comprising:

11. The bone conduction speaker as claimed in claim 10, wherein the number of the supporting members is two, and one of the supporting members is disposed between the magnetic unit and the lower surface of the resilient plate; the other supporting piece is arranged between the shell and the upper surface of the elastic piece.

12. Bone conduction ear-worn device, characterized by having a spring plate according to any of claims 1 to 5.