CN216146434U

CN216146434U - A leak protection sound structure for bone conduction earphone

Info

Publication number: CN216146434U
Application number: CN202121012444.9U
Authority: CN
Inventors: 刘志华; 严凯; 罗君波; 颜军胜
Original assignee: Cosonic Intelligent Technologies Co Ltd
Current assignee: Cosonic Intelligent Technologies Co Ltd
Priority date: 2021-05-12
Filing date: 2021-05-12
Publication date: 2022-03-29
Anticipated expiration: 2031-05-12

Abstract

The utility model relates to the technical field of bone conduction earphones, in particular to a sound leakage prevention structure for a bone conduction earphone, which comprises a sealed ear shell and a key assembly, wherein an opening is formed in the side surface of the sealed ear shell, the key assembly comprises a key circuit board and a soft rubber fixed at the opening, the key circuit board is fixedly arranged in the sealed ear shell and positioned on the inner side of the soft rubber, and a seal is formed between the soft rubber and the sealed ear shell. Compared with the prior art, through forming sealed between sealed concha and the flexible glue, make sealed concha form effective seal, guaranteed the seal of sealed concha inner chamber, prevent the sound leakage, improve the sound transmission efficiency.

Description

A leak protection sound structure for bone conduction earphone

Technical Field

The utility model relates to the technical field of bone conduction earphones, in particular to a sound leakage preventing structure for a bone conduction earphone.

Background

The existing bone conduction earphone generally comprises a sealed earshell and a vibrator arranged inside the sealed earshell, wherein energy is transmitted through the vibrator to enable a vibration part of the sealed earshell to generate vibration and transmit the vibration. But present sealed earlap is outside except that sealed earlap is originally, and sealed earlap still can set up some auxiliary assembly rather than being connected, for example button subassembly and ear-hang subassembly, because button subassembly and ear-hang subassembly all not with sealed earlap integrated into one piece, consequently, certain gap can certainly exist between sealed earlap and these subassemblies, and space leakproofness is not enough, and these gaps can lead to certain influence to the vibration to lead to the problem of lou sound, lead to sound transmission efficiency to reduce to some extent.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to provide a sound leakage preventing structure for a bone conduction earphone capable of reducing sound leakage in view of the disadvantages of the related art.

The purpose of the utility model is realized by the following technical scheme:

the utility model provides a leak protection sound structure for bone conduction earphone, including sealed earlap and button subassembly, the opening has been seted up to the side of sealed earlap, and the button subassembly includes the key circuit board and fixes at the open-ended flexible glue, and key circuit board fixed mounting just is located the inboard of flexible glue in sealed earlap, forms sealedly between flexible glue and the sealed earlap.

Wherein, the inner side surface of the sealed ear shell is provided with a groove, the opening is arranged at the groove bottom of the groove, and the soft glue is fixedly arranged in the groove.

The button subassembly still includes the ebonite cap that sets up in the flexible glue outside, and the middle part of flexible glue is hollowed and is formed the turn-ups portion that inserts in the ebonite cap towards the ebonite cap protrusion, and turn-ups portion and ebonite cap rigid coupling are sealed.

Wherein, sealed earlap includes casing and lower casing, goes up the casing and is equipped with first joint portion, and the casing is equipped with second joint portion down, and first joint portion and second joint portion joint are sealed.

The first clamping part is a clamping groove formed at the bottom end of the upper shell, the second clamping part is a protrusion formed at the top end of the lower shell, the protrusion is inserted into the clamping groove, and sealant is arranged between the protrusion and the clamping groove.

The second clamping part is a clamping groove formed at the bottom end of the upper shell, the first clamping part is a protrusion formed at the top end of the lower shell, the protrusion is inserted into the clamping groove, and sealant is arranged between the protrusion and the clamping groove.

Wherein, the sealed ear shell is fixedly provided with an ear hook, the end part of the ear hook is provided with an insertion part, and the sealed ear shell is provided with a connecting hole;

the insertion part is inserted into the connecting hole and is connected with the connecting hole in a sealing way.

Wherein, the peripheral side of the inserting part is outwards formed with at least one circle of convex rings for sealing.

Wherein, the peripheral side of grafting portion is seted up at least round slot, and the slot intussuseption is filled with sealed glue.

Wherein, the grafting portion inserts inside sealed earlap, is equipped with sealed glue between the tip of grafting portion and the sealed earlap.

The utility model has the beneficial effects that:

compared with the prior art, the sound leakage preventing structure for the bone conduction earphone has the advantages that the sealing is formed between the sealing earshell and the soft rubber, so that the sealing earshell is effectively sealed, the sealing performance of the inner cavity of the sealing earshell is guaranteed, sound leakage is prevented, and the sound transmission efficiency is improved.

Drawings

The utility model is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the utility model, and for a person skilled in the art, other drawings can be obtained on the basis of the following drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a bone conduction headset in this embodiment.

Fig. 2 is an exploded view of the bone conduction headset in the present embodiment.

Fig. 3 is an exploded view of the bone conduction headset of the present embodiment after the ear hook and the lower housing are hidden.

Fig. 4 is a cross-sectional view taken at a-a in fig. 1.

Fig. 5 is a cross-sectional view at B-B in fig. 1.

Reference numerals: the ear sealing structure comprises a sealing earshell 1, an upper shell 11, a lower shell 12, a connecting hole 13, a groove 14, a first clamping portion 111, a second clamping portion 121, a key assembly 2, soft rubber 21, a hard rubber cap 22, a flanging portion 23, an ear hook 3, an inserting portion 31, a convex ring 32 and a groove 33.

Detailed Description

The utility model is further described with reference to the following examples.

An embodiment of a sound leakage preventing structure for a bone conduction earphone according to the present invention, as shown in fig. 1 and 2, includes a sealing earshell 1 and a key assembly 2. Sealed earmuff 1 includes casing 11 and lower casing 12, button subassembly 2 includes flexible glue 21, key circuit board 24 and ebonite cap 22, the opening has been seted up to the side of sealed earmuff 1 (last casing 11), flexible glue 21 fixed mounting is at the opening part, ebonite cap 22 exposes this opening, and key circuit board is then fixed mounting in last casing 11, and be located flexible glue 21's inboard, it should be said, key circuit board 24 has contact mechanism or button mechanism, through pressing flexible glue 21, flexible glue 21 and key circuit board 24 contact, thereby trigger key circuit board 24 signals of telecommunication.

As an improvement, with reference to fig. 3, a sealant (not shown) is disposed between the soft rubber 21 and the sealed ear shell 1, so as to form a seal between the soft rubber 21 and the upper shell 11, specifically, the sealant can be disposed at the periphery of the soft rubber 21, and a gap between the soft rubber 21 and the upper shell 11 is sealed by the sealant, so that an effective seal is formed between the sealed ear shell 1 and the key assembly 2, thereby ensuring the sealing performance of the inner cavity of the sealed ear shell 1, preventing sound leakage, and improving the sound transmission efficiency.

In order to facilitate positioning and installation of the key assembly 2 and to facilitate the arrangement of a sealant, referring to fig. 4, a groove 14 is formed on the inner side surface of the sealing earshell 1, an opening is formed at the bottom of the groove 14, and the key assembly 2 is fixedly installed in the groove 14. Specifically, the soft rubber 21 of the key assembly 2 is clamped into the groove 14 for fixation, and the hard rubber ring is fixedly connected with the soft rubber 21. The middle part of the soft rubber 21 is hollowed and protrudes towards the hard rubber cap 22 to form a flanging part 23 inserted into the hard rubber cap 22, and the flanging part 23 is fixedly connected and sealed with the hard rubber cap 22. It should be noted that the fixed connection and sealing between the soft rubber 21 and the hard rubber cap 22 can be achieved by glue bonding or vulcanization welding, so that an effective seal is formed between the soft rubber 21 and the hard rubber cap 22, and the sealing performance of the sealed earmuff 1 is further improved.

As another improvement, referring to fig. 4, the upper housing 11 and the lower housing 12 are fixedly connected in a clamping manner, the upper housing 11 is provided with a first clamping portion 111, the lower housing 12 is provided with a second clamping portion 121, and the first clamping portion 111 and the second clamping portion 121 are clamped and sealed. In this embodiment, the first clamping portion is a clamping groove formed at the bottom end of the upper housing 11, the second clamping portion is a protrusion formed at the top end of the lower housing 12, the protrusion is inserted into the clamping groove, and the protrusion and the clamping groove can be continuously and effectively sealed by a sealant, so as to further improve the sealing performance of the sealing earmuff 1. In other embodiments, the second clamping portion may be a clamping groove formed at the bottom end of the upper housing 11, and similarly, the first clamping portion is a protrusion formed at the top end of the lower housing 12, the protrusion is inserted into the clamping groove, and a sealant is also disposed between the protrusion and the clamping groove, which may be continuously selected and set according to actual requirements.

Because bone conduction earphone all is provided with ear-hook 3 generally, and ear-hook 3 is the cartridge on sealed earlap 1, consequently, must have the gap between ear-hook 3 and the sealed earlap 1, also can have the problem of louing, consequently, also need do between ear-hook 3 and the sealed earlap 1 and seal the processing. In this embodiment, referring to fig. 5, the ear-hook 3 is fixedly mounted on the ear-sealing shell 1, the end of the ear-hook 3 is provided with the insertion portion 31, and the ear-sealing shell 1 is provided with the connection hole 13. The insertion part 31 is inserted into the connection hole 13 and is hermetically connected with the connection hole 13. Specifically, a circle of convex ring 32 for sealing is formed by the outer peripheral side surface of the insertion part 31 facing outwards, and in an assembly state, the convex ring 32 can abut against the inner wall of the connecting hole 13, so that a first layer of sealing is formed between the sealing earmuff 1 and the earhook 3, and the sealing performance of the sealing earmuff 1 is ensured. Furthermore, a circle of groove 33 is formed in the peripheral side face of the insertion part 31, and sealant is filled in the groove 33, so that a second layer of seal is formed between the sealed earshell 1 and the earhook 3, and the tightness of the sealed earshell 1 is further ensured. In addition, the insertion part 31 is inserted into the sealed ear shell 1, and a sealant is arranged between the end part of the insertion part 31 and the sealed ear shell 1, so that a third layer of seal is formed between the sealed ear shell 1 and the ear hook 3, and the problem of sound leakage at the joint of the ear hook 3 and the sealed ear shell 1 is prevented.

Compared with the prior art, the sound leakage preventing structure for the bone conduction earphone has the advantages that the effective sealing structures are formed between the sealing earshell 1 and the key assembly 2, between the upper shell 11 and the lower shell 12 and between the ear hook 3 and the sealing earshell 1, so that the airtightness of the inner cavity of the sealing earshell 1 is ensured, sound leakage is prevented, and the sound transmission efficiency is improved.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides a leak protection sound structure for bone conduction earphone which characterized in that: including sealed earlap and button subassembly, the opening has been seted up to the side of sealed earlap, the button subassembly includes the button circuit board and fixes the flexible glue of opening, button circuit board fixed mounting just be located the inboard of flexible glue in the sealed earlap, the flexible glue with form sealedly between the sealed earlap.

2. The sound leakage preventing structure for a bone conduction earphone according to claim 1, wherein: the inner side surface of the sealed ear shell is provided with a groove, the opening is arranged at the groove bottom of the groove, and the soft glue is fixedly arranged in the groove.

3. The sound leakage preventing structure for a bone conduction earphone according to claim 1 or 2, wherein: the button subassembly still is including setting up the ebonite cap in the flexible glue outside, the middle part of flexible glue is hollowed and is faced the ebonite cap protrusion forms and inserts turn-ups portion in the ebonite cap, turn-ups portion and ebonite cap rigid coupling and sealed.

4. The sound leakage preventing structure for a bone conduction earphone according to claim 1, wherein: the sealed earlap includes casing and lower casing, it is equipped with first joint portion to go up the casing, the casing is equipped with second joint portion down, first joint portion with second joint portion joint and sealed.

5. The sound leakage preventing structure for a bone conduction earphone according to claim 4, wherein: the first clamping part is formed in a clamping groove in the bottom end of the upper shell, the second clamping part is formed in a protrusion in the top end of the lower shell, the protrusion is inserted into the clamping groove, and a sealant is arranged between the protrusion and the clamping groove.

6. The sound leakage preventing structure for a bone conduction earphone according to claim 4, wherein: the second clamping part is formed in a clamping groove in the bottom end of the upper shell, the first clamping part is formed in a protrusion in the top end of the lower shell, the protrusion is inserted into the clamping groove, and a sealant is arranged between the protrusion and the clamping groove.

7. The sound leakage preventing structure for a bone conduction earphone according to claim 1, wherein: the sealed ear shell is fixedly provided with an ear hook, the end part of the ear hook is provided with an insertion part, and the sealed ear shell is provided with a connecting hole;

the inserting part is inserted into the connecting hole and is connected with the connecting hole in a sealing mode.

8. The sound leakage preventing structure for a bone conduction earphone according to claim 7, wherein: the peripheral side of the insertion part faces outwards to form at least one circle of convex rings for sealing.

9. The sound leakage preventing structure for a bone conduction earphone according to claim 7, wherein: at least one circle of groove is formed in the peripheral side face of the inserting portion, and sealant is filled in the groove.

10. The sound leakage preventing structure for a bone conduction earphone according to claim 7, wherein: the inserting part is inserted into the sealing ear shell, and a sealant is arranged between the end part of the inserting part and the sealing ear shell.