CN220627651U

CN220627651U - Key structure of bone conduction earphone

Info

Publication number: CN220627651U
Application number: CN202321300558.2U
Authority: CN
Inventors: 谢嗣海
Original assignee: Dongguan Liesheng Electronic Co Ltd
Current assignee: Dongguan Liesheng Electronic Co Ltd
Priority date: 2023-05-25
Filing date: 2023-05-25
Publication date: 2024-03-19
Anticipated expiration: 2033-05-25

Abstract

The utility model belongs to the technical field of bone conduction earphone products, and particularly relates to a key structure of a bone conduction earphone, which comprises a shell, wherein a circuit board is arranged in the shell, a plurality of switch keys are arranged on the circuit board, the shell is provided with a plurality of concave areas corresponding to the switch keys, the concave areas are respectively and independently arranged, key holes communicated with the inside of the shell are respectively and independently arranged at the bottoms of the concave areas, key caps are arranged at the key holes, and elastic waterproof pieces are arranged between the key caps and the switch keys. The whole movable elastic surface of the elastic waterproof piece is directly contacted with the switch key in the elastic deformation process, so that the touch feeling is ensured, and even if the switch key is deviated due to accumulated tolerance, the whole movable elastic surface of the elastic waterproof piece is always contacted with the whole elastic surface of the elastic waterproof piece, thereby increasing the fault tolerance and effectively ensuring the consistency of the touch feeling.

Description

Key structure of bone conduction earphone

Technical Field

The utility model belongs to the technical field of bone conduction earphone products, and particularly relates to a key structure of a bone conduction earphone.

Background

All be equipped with the button of regulation volume or control switching machine on and shutting down on the current bone conduction earphone, and the button on the bone conduction earphone must have the clearance with bone conduction earphone casing, then the outside drop of water of earphone casing will follow this clearance and enter into bone conduction earphone casing and invade the chip in the wet earphone, and then lead to the chip to damage. At present, as shown in fig. 1, the existing key structure meeting the IPX7 level in the market has a risk that a contact head contacts with a key on the PCBA to increase the hand feeling on the basis that the silica gel encapsulation at the key meets the waterproof tightness, namely after the key is assembled with the contact head, the key is not necessarily aligned strictly due to the accumulated tolerance of each component, and the risk of deviation between the contact head and the key possibly exists, so that the hand feeling of the key with a certain probability is poor.

Disclosure of Invention

The utility model aims to provide a key structure of a bone conduction earphone, and aims to solve the technical problem of poor key hand feeling caused by the risk of deviation between a contact head and a key in the prior art.

To achieve the above objective, an embodiment of the present utility model provides a key structure of a bone conduction earphone, where the key structure of the bone conduction earphone includes a housing, a circuit board is mounted inside the housing, a plurality of switch keys are disposed on the circuit board, the housing is provided with a plurality of recessed areas corresponding to the plurality of switch keys, the plurality of recessed areas are respectively and independently disposed, key holes communicated with the interior of the housing are formed in bottoms of the recessed areas and are respectively and independently disposed, a key cap is disposed at the key holes, and an elastic waterproof member is disposed between the key cap and the switch keys.

Optionally, the inner wall of the shell and the concave area are provided with clamping grooves, and the edge of the elastic waterproof piece is provided with side edges matched with the clamping grooves.

Optionally, the elastic waterproof piece is made of soft rubber material and is injection molded in the clamping groove through a beer sleeving process, so that the elastic waterproof piece and the shell are fixed into a whole.

Optionally, the elastic waterproof piece is provided with a positioning hole, the inside of the shell is provided with a positioning piece matched with the positioning hole, and the positioning piece is positioned between the adjacent concave areas which are independently arranged and is clamped in the positioning hole.

Optionally, the elastic waterproof piece includes a body, a bearing part disposed on the body and used for bearing the key cap, and a telescopic part disposed on the body and located between the bearing part and the side edge of the body.

Optionally, the bearing part is provided with a plurality of bearing parts and is uniformly distributed below the key cap.

Optionally, the bottom surface of the bearing part is a planar structure.

Optionally, the bearing part is a plurality of bearing cylinders, and the key cap is provided with a plurality of pressing columns which are in one-to-one correspondence with the plurality of bearing cylinders and penetrate through the bearing cylinders.

Optionally, a gap exists between the key cap and the sidewall of the recessed region.

Optionally, an annular table top is arranged on the area of the bottom of the concave area, the key cap is accommodated in the concave area, and the key cap is abutted against the upper part of the annular table top in the pressing process.

The above technical solutions in the key structure of the bone conduction earphone provided by the embodiments of the present utility model have at least one of the following technical effects:

according to the key structure of the bone conduction earphone, when external force acts on the key cap, the key cap presses down along the key hole to move, the key cap presses down to drive the elastic waterproof piece to deform and act on the switch key, the whole movable elastic surface of the elastic waterproof piece directly contacts with the switch key in the elastic deformation process, and even if the switch key deviates due to accumulated tolerance while the hand feeling is ensured, the whole movable elastic surface of the elastic waterproof piece always keeps contact with the whole elastic surface of the elastic waterproof piece, so that the fault tolerance is increased, and the consistency of the hand feeling is effectively ensured.

According to the utility model, the key cap is made of an independent plastic material, and the elastic support piece is made of a soft rubber material and is injection molded in the shell through a beer sleeving process, so that a sealing space can be formed in the shell, and the waterproof and dustproof effects of IPX7 level or above can be effectively achieved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of the overall structure of a key structure of a bone conduction headset in the prior art;

fig. 2 is a schematic diagram of the overall structure of a key structure of a bone conduction headset according to an embodiment of the present utility model;

fig. 3 is an exploded schematic view of a key structure of a bone conduction headset according to an embodiment of the present utility model;

fig. 4 is a cross-sectional view of a key structure of a bone conduction headset according to an embodiment of the present utility model;

fig. 5 is a schematic structural view of an elastic waterproof member of a key structure of a bone conduction headset according to an embodiment of the present utility model.

Wherein, each reference sign in the figure:

1. casing 2, circuit board 3, on-off key

4. Recessed area 5, key hole 6 and key cap

7. Elastic waterproof piece 8, clamping groove 9 and positioning hole

10. Positioning piece 11, main body 12 and bearing part

13. Telescoping part 14, side edge 15 and bearing cylinder

16. Pressing column 17, annular table top

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and intended to illustrate embodiments of the utility model and should not be construed as limiting the utility model.

In the description of the embodiments of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the embodiments of the present utility model and simplify description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more, unless explicitly defined otherwise.

In the embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and include, for example, either permanently connected, removably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

In one embodiment of the present utility model, as shown in fig. 2-4, a key structure of a bone conduction earphone is provided, where the key structure of the bone conduction earphone includes a housing 1, a circuit board 2 is installed inside the housing 1, a plurality of switch keys 3 are disposed on the circuit board 2, the housing 1 is provided with a plurality of recessed areas 4 corresponding to the plurality of switch keys 3, the plurality of recessed areas 4 are respectively and independently disposed, a key hole 5 communicating with the interior of the housing 1 is provided at the bottom of each of the recessed areas 4, a key cap 6 is disposed at the key hole 5, and an elastic waterproof member 7 is disposed between the key cap 6 and the switch keys 3. When an external force acts on the key cap 6, the key cap 6 is pressed down along the key hole 5 to move, and the key cap 6 is pressed down to drive the elastic waterproof piece 7 to deform and act on the switch key 3, so that the switch key 3 is triggered. The whole movable elastic surface of the elastic waterproof piece 7 is directly contacted with the switch key 3 in the deformation process, so that the fault tolerance is increased, and the consistency of the hand feeling is effectively ensured, and even if the switch key 3 is deviated due to accumulated tolerance, the whole movable elastic surface of the elastic waterproof piece 7 is always contacted with the whole elastic surface.

In another embodiment of the present utility model, the housing 1 includes a first housing and a second housing, where the first housing and the second housing are buckled to form a containing space, and the circuit board 2 is disposed in the containing space. And the first shell and the second shell are made of plastic materials.

Specifically, the inner wall of the housing 1 and the recess 4 are provided with a clamping groove 8, and the edge of the elastic waterproof piece 7 is provided with a side edge 14 matched with the clamping groove 8. The elastic waterproof piece 7 is injection molded in the clamping groove 8 through a beer sleeving process, so that the elastic waterproof piece 7 and the shell 1 are fixed into a whole, liquid such as water can be effectively prevented from entering the shell 1 through the elastic waterproof piece 7, and the waterproof performance of a waterproof key is improved. Preferably, the elastic waterproof member 7 is connected in the clamping groove 8 in a glue bonding manner or a bonding manner of combining a clamping structure with glue bonding, so that the elastic waterproof member 7 and the housing 1 are fixed into a whole.

In this embodiment, the elastic waterproof piece 7 is made of a soft rubber material, and specifically, the elastic waterproof piece 7 is made of high-elastic silica gel or a mixed material of high-elastic silica gel and common silica gel. The high-elastic silica gel has higher elasticity and better structural strength, and even if a key with a limited space is pressed in a small size, the high-elastic silica gel still can provide better pressing hand feeling elasticity, and meanwhile, good structural strength is ensured.

In another embodiment of the present utility model, as shown in fig. 3-5, the elastic waterproof member 7 is provided with a positioning hole 9, a positioning member 10 that is matched with the positioning hole 9 is disposed inside the housing 1, and the positioning member 10 is located between the adjacent recessed areas 4 that are independently disposed and is clamped in the positioning hole 9. Specifically, setting element 10 with casing 1 integrated into one piece, and the shape of setting element 10 with the shape of locating hole 9 is unanimous, just the joint of setting element 10 interference in locating hole 9, through setting element 10 with cooperation between the locating hole 9 realizes to the effect that elastic waterproof piece 7 played the location prevents elastic waterproof piece 7 appears the beat in the in-process of pressing deformation to can effectually avoid liquid such as water to see through elastic waterproof self gets into inside casing 1, thereby improved the waterproof performance of bone conduction earphone.

Specifically, as shown in fig. 5, the elastic waterproof member 7 includes a main body 11, a carrying portion 12 provided on the main body 11 and configured to carry the key cap 6, and a telescopic portion 13 provided on the main body 11 and located between the carrying portion 12 and the side edge 14 of the main body 11. The expansion and contraction part 13 is used for increasing the movement travel of the body 11 when pressed.

Specifically, the bottom surface of the carrying portion 12 has a planar structure. The bearing part 12 with the plane structure enlarges the contact area with the switch key 3, when external force acts on the key cap 6, the key cap 6 pushes down along the key hole 5 and moves, the key cap 6 pushes down and drives the elastic waterproof piece 7 to deform, the whole bearing part 12 of the elastic waterproof piece 7 directly contacts with the switch key 3, and even if the switch key 3 deviates due to accumulated tolerance while ensuring the hand feeling, the bearing part always contacts with the whole elastic surface of the bearing part 12 of the elastic waterproof piece 7, thereby increasing the fault tolerance and effectively ensuring the consistency of the hand feeling.

In this embodiment, the expansion portion 13 is in an arc transition, and the expansion portion 13 may be configured as a U-shape, a corrugated shape, a V-shape, or the like. The design of the telescopic part 13 can improve the up-and-down movement stroke of the key cap 6, so as to improve the pressing hand feeling, and the fastening connection between the telescopic part 13 of the elastic waterproof piece 7 and the shell 1 can not be influenced when the key cap 6 is pressed, so that the sealing performance and the service life are also improved.

In another embodiment of the present utility model, as shown in fig. 4-5, the carrying portion 12 is provided with a plurality of carrying portions and is uniformly distributed under the key cap 6. The bearing part 12 is a plurality of bearing drums 15, and the key cap 6 is provided with a plurality of pressing columns 16 which are in one-to-one correspondence with the plurality of bearing drums 15 and penetrate through the bearing drums. In this embodiment, the bottom surface of the carrying cylinder 15 is a closed structure, and of course, according to practical situations, the bottom surface of the carrying cylinder 15 may also be a penetrating structure. After the bearing cylinder 15 is connected with the pressing column 16, the key cap 6 and the elastic waterproof piece 7 are connected together through hot melting treatment or glue sealing treatment. Through the connection between the bearing cylinder 15 and the pressing post 16, when the key cap 6 is pressed, the key cap 6 can be stressed uniformly, and the stress is concentrated on the pressing post 16, so that the main body 11 of the elastic waterproof piece 7 is pushed to deform downwards, and when the pressing force disappears, the key cap 6 is reset along with the elastic waterproof piece 7.

In another embodiment of the present utility model, a gap exists between the key cap 6 and the sidewall of the recess 4. The key cap 6 is an independently manufactured part and is formed by injection molding of plastic materials. And the key cap 6 is accommodated in the concave area 4 and is in clearance fit with the concave area 4, so as to ensure smooth pressing and resetting of the key cap 6.

Specifically, an annular table top 17 is disposed on the bottom area of the recessed area 4, the key cap 6 is accommodated in the recessed area 4, and the key cap 6 abuts against the upper portion of the annular table top 17 during pressing. Through the setting of annular mesa 17, button cap 6 at the in-process of pushing down with annular mesa 17 looks butt, annular mesa 17 can effectually prevent button cap 6 transition pushes down, and then to button cap 6 plays spacing effect, and further restriction the scope of upwards kick-backing of depressed area 4.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The utility model provides a key structure of bone conduction earphone, its characterized in that, bone conduction earphone's key structure includes the casing, casing internally mounted has the circuit board, be equipped with a plurality of on & off switch on the circuit board, the casing be equipped with a plurality of the depressed area that the on & off switch corresponds, a plurality of the depressed area is independent setting respectively, and the key hole with the inside intercommunication of casing has been seted up to the depressed area bottom that sets up respectively independently, key hole department is equipped with the button cap, the button cap with be equipped with elasticity waterproof piece between the on & off switch.

2. The key structure of the bone conduction earphone according to claim 1, wherein a clamping groove is formed in the inner wall of the shell and located in the concave area, and a side edge matched with the clamping groove is formed on the edge of the elastic waterproof piece.

3. The key structure of the bone conduction earphone according to claim 2, wherein the elastic waterproof piece is made of soft rubber material and is injection molded in the clamping groove through a beer sleeving process, so that the elastic waterproof piece and the shell are fixed into a whole.

4. The key structure of the bone conduction earphone according to claim 3, wherein the elastic waterproof piece is provided with a positioning hole, a positioning piece matched with the positioning hole is arranged inside the shell, and the positioning piece is located between the concave areas which are adjacent and independently arranged and is clamped in the positioning hole.

5. The key structure of the bone conduction headset according to claim 4, wherein the elastic waterproof member comprises a body, a carrying portion provided on the body for carrying the key cap, and a telescopic portion provided on the body and located between the carrying portion and the side edge of the body.

6. The key structure of the bone conduction headset according to claim 5, wherein the plurality of bearing parts are uniformly distributed below the key cap.

7. The key structure of the bone conduction headset of claim 6, wherein the bottom surface of the bearing portion is a planar structure.

8. The key structure of the bone conduction headset according to claim 6, wherein the bearing part is a plurality of bearing cylinders, and the key cap is provided with a plurality of pressing columns which are in one-to-one correspondence with and penetrate through the plurality of bearing cylinders.

9. The key structure of a bone conduction headset of claim 8, wherein a gap exists between the key cap and a sidewall of the recessed region.

10. The key structure of the bone conduction headset according to claim 9, wherein an annular table surface is provided on an area of the bottom of the depression, the key cap is accommodated in the depression and the key cap is abutted against an upper portion of the annular table surface during pressing.