WO2023236997A1 - Key structure, earphone head and bone conduction earphone - Google Patents

Abstract

Disclosed in the present invention are a key structure, an earphone head and a bone conduction earphone. The key structure comprises a housing, a circuit board, a sealing assembly and a pressing member, wherein the housing is provided with an accommodating cavity, and a through hole communicating the accommodating cavity with the outside. The circuit board is arranged in the accommodating cavity, and the circuit board comprises a switch arranged corresponding to the through hole. The sealing assembly comprises a connecting member arranged opposite the switch, and a flexible member connected between the connecting member and the housing, wherein an outer edge of the flexible member is connected to the housing, the flexible member is provided with a mounting hole, the connecting member is arranged in the mounting hole, and the flexible member and the connecting member cooperate to seal the through hole. The pressing member is connected to the connecting member, and the pressing member comprises a pressing panel positioned outside the through hole. The key structure of the present invention has good sealing performance while achieving a key function.

Description

A button structure, earphone head and bone conduction earphone

Priority information: This application claims priority from Chinese patent application No. 202221454518.9, filed on June 10, 2022.

Technical field

The present invention relates to the technical field of earphones, and in particular to a button structure, an earphone head and a bone conduction earphone.

Background technique

Electronic devices such as bone conduction headphones are usually equipped with buttons, which can be used to conveniently control the electronic device, such as controlling the power on and off, switching songs, making and receiving calls, increasing and decreasing the volume, etc.

On the one hand, due to the relatively small size of bone conduction earphones, the space available for setting buttons is limited. Structures using buttons as buttons in the prior art usually have a small pressing area and are inconvenient to operate. On the other hand, the buttons need to be connected to the electronic components in the casing of the earphones. Therefore, the button structure needs to have good waterproof performance, otherwise it is easy for water to enter and affect the normal use of the earphones.

Therefore, it is necessary to improve the prior art to overcome the defects in the prior art.

Contents of the invention

The object of the present invention is to provide a button structure, an earphone head and a bone conduction earphone, which are easy to operate and have good waterproof performance.

In order to achieve the above-mentioned object of the invention, in the first aspect, the invention proposes a key structure, including:

The shell is provided with a receiving cavity and a through hole connecting the receiving cavity and the outside world;

A circuit board is provided in the receiving cavity, and the circuit board includes a switch provided corresponding to the through hole;

The sealing assembly includes a connecting piece opposite to the switch and a flexible piece connected between the connecting piece and the housing. The outer edge of the flexible piece is connected to the housing, and the flexible piece is configured to There is a mounting hole, the connecting piece is located in the mounting hole, the flexible piece and the connecting piece cooperate to seal the through hole; and,

a pressing member connected to the connecting member, the pressing member including a pressing member located outside the through hole panel.

Further, the first surface of the housing connected to the flexible member is provided with a first groove, and the flexible member is provided with a first convex portion connected to the first groove;

The first groove is annular and surrounds the outside of the through hole; or the housing includes a plurality of first grooves, and the plurality of first grooves surrounds the outside of the through hole. .

Further, the connecting member includes a body, a second groove is provided on the second surface of the body facing the pressing member, and the flexible member is provided with a second protrusion connected in the second groove. .

Further, the connecting member further includes a flange connected to the body, and the flange is attached to the third surface of the flexible member facing the circuit board.

Further, the outer peripheral surface of the body is a tapered surface, and its cross-sectional size gradually decreases in a direction away from the circuit board.

Furthermore, the connecting member further includes a boss protruding from the body toward the pressing panel, and the pressing panel is in contact with the boss.

Further, the connecting piece is provided with a plug hole, and the pressing member also includes an inserting post connected to the pressing panel, and the inserting post is inserted into the inserting hole. The inserting post and the inserting hole They are sealed with glue.

Further, the housing is provided with a guide hole communicating with the through hole, and the pressing member is slidably coupled with the guide hole.

Further, the pressing panel is slidably coupled with the guide hole, or the pressing member further includes a decorative piece connected to the fifth surface of the pressing panel facing away from the circuit board, and the decorative piece is connected to the Guide hole sliding fit.

Further, the connecting piece and the housing are made of hard plastic, and the flexible piece is made of silicone. The connecting piece, the flexible piece and the housing are molded together by two-color injection molding.

Further, the pressing member is not in direct contact with the housing.

In a second aspect, the present invention provides an earphone head, including a button structure as described in any one of the above items.

In a second aspect, the present invention proposes a bone conduction earphone, including a button structure as described in any one of the above or an earphone head as described above.

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

1. In the present invention, the key structure is provided with a sealing component, and its flexible parts and connecting parts cooperate with the sealing shell. The through hole can effectively improve the sealing performance, prevent external water vapor, liquid and dust from entering the housing, and ensure the normal operation of the electronic components in the housing. On the one hand, the flexible part can provide the reset force that drives the pressing part to reset. On the other hand, it can play a sealing role, simplifying the structure, and triggering the switch through the connecting piece, which can protect the flexible part and reduce the wear of the flexible part.

2. As an improvement, the housing is provided with a guide hole, and the pressing member is slidably matched in the guide hole. On the one hand, the guide hole can guide the movement of the pressing member to ensure that the pressing member can reliably trigger the switch when pressed. On the other hand, the pressing member Embedded in the guide hole, it is not easily damaged by lifting, and the structure is more reliable.

Description of drawings

Figure 1 is a schematic three-dimensional view of a key structure according to an embodiment of the present invention.

FIG. 2 is an exploded view of the key structure shown in FIG. 1 .

FIG. 3 is a top view of the key structure shown in FIG. 1 .

FIG. 4 is a cross-sectional view along line A-A in FIG. 3 .

FIG. 5 is a perspective view of the housing of the key structure shown in FIG. 1 .

FIG. 6 is a cross-sectional view of the housing of the key structure shown in FIG. 1 .

Figure 7 is a schematic perspective view of a flexible member according to an embodiment of the present invention.

FIG. 8 is a perspective view of the housing shown in FIG. 5 from another direction.

FIG. 9 is an enlarged view of part I in FIG. 4 .

Figure 10 is a top view of the housing according to an embodiment of the present invention. In the figure, the first groove is annular.

Figure 11 is a schematic three-dimensional view of a connector according to an embodiment of the present invention.

Fig. 12 is a schematic structural diagram of the connecting member in Fig. 11 from another perspective.

Figure 13 is a cross-sectional view of a key structure according to an embodiment of the present invention. In the figure, the pressing panel is not provided with insertion posts.

Figure 14 is a schematic perspective view of a pressing panel according to an embodiment of the present invention.

Figure 15 is a schematic structural diagram of an earphone head according to an embodiment of the present invention.

Figure 16 is a schematic structural diagram of an earphone according to an embodiment of the present invention.

Detailed ways

In order to make the above objects, features and advantages of the present application more obvious and easy to understand, the specific implementation modes of the present application will be described in detail below with reference to the accompanying drawings. It can be understood that the specific embodiments described here are only used to explain the present application, but not to limit the present application. It should also be noted that for For convenience of description, only some but not all structures related to the present application are shown in the drawings. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

The terms "including" and "having" and any variations thereof in this application are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes Other steps or units inherent to such processes, methods, products or devices.

Reference herein to "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.

As shown in Figures 1 to 4, a key structure corresponding to a preferred embodiment of the present invention includes a housing 1, a circuit board 2, a sealing component 3 and a pressing member 4.

As shown in Figures 5 and 6, the housing 1 includes a base portion 1a and an annular side shell portion 1b protruding outward from the outer edge of the base portion 1a. A receiving cavity with one end open is formed between the base portion 1a and the side shell portion 1b. 10. The base 1a is also provided with a through hole 11 that communicates the receiving cavity 10 with the outside world.

The circuit board 2 is arranged in the receiving cavity 10 and fixed on the base 1a. The circuit board 2 and the base 1a may be connected through adhesive connection, screw connection, or hot melt column connection, for example. As shown in FIGS. 4 to 6 , in this embodiment, the base 1 a is provided with a hot melt pillar 15 protruding into the receiving cavity 10 . The hot melt pillar 15 passes through the circuit board 2 and extends to the top of the circuit board 2 . Not only can the circuit board 2 be positioned, but its upper end can also be fixed by heat fusion.

The circuit board 2 is provided with a switch 20. The switch 20 can be, for example, a micro switch or a tact switch. It can trigger an electrical signal after being pressed by an external force. The electrical signal is transmitted to the control system of the earphone through the circuit board and processed by the control system of the earphone. Then the corresponding control instructions are generated. The switch 20 is provided corresponding to the through hole 11 so that the pressing member 4 triggers the switch 20 when pressed.

The sealing assembly 3 is connected to the housing 1 and seals the through hole 11 . It includes a connecting piece 30 opposite to the switch 20 and a flexible piece 31 connected between the connecting piece 30 and the housing 1 . The connecting piece 30 and the flexible piece 31 cooperate to seal The through hole 11 , specifically, the flexible member 31 is annular, and its outer edge is connected to the housing 1 . A mounting hole 310 is opened in the center of the flexible member 31 , and the connector 30 is connected in the mounting hole 310 to cooperate with the flexible member 31 to seal the through hole 11 to prevent external water vapor, liquid, dust and other foreign matter from entering the receiving cavity 10 .

The pressing part 4 is connected to the connecting part 30, which is connected to the housing 1 through the sealing component 3, and is not directly connected to the housing 1, and preferably it is not in direct contact with the housing 1. The pressing member 4 includes a pressing panel 40 for pressing. When the pressing panel 40 is pressed by a finger, it drives the connecting member 30 to move in the direction of the switch 20 and presses down the trigger switch 20. During this process, the flexible member 31 Elastic deformation, after the pressing panel 40 loses external pressure, the flexible member 31 resumes its deformation, driving the connecting member 30 and the pressing member 4 back to their original positions.

In a preferred embodiment, when the connecting piece 30 is in the original position (the position when not affected by external pressure), it abuts the switch 20 but does not press the switch 20. When the pressing panel 40 is pressed, the connecting piece 30 is driven to press switch 20. In another preferred embodiment, when the connecting piece 30 is in the original position, it does not contact the switch 20 and there is a gap between the two. When the panel 40 is pressed to drive the connecting piece 30 to move toward the switch 20, the connecting piece 30 moves toward the switch 20. 30 first contacts the switch 20, and then presses the switch 20.

By arranging the flexible member 31 and the connecting member 30 to cooperate with the sealed through hole 11, the sealing performance of the key structure can be effectively improved, and external water vapor, liquid, dust, etc. can be prevented from entering the receiving cavity 10, and the internal electronic components can be effectively protected. Improve the reliability of electronic equipment. At the same time, the flexible member 31 also has the function of providing a restoring force, which can simplify the overall structure. In addition, the pressing panel 40 is located outside the through hole 11, and its area can be made larger, thereby making it easier for fingers to press the pressing panel 40.

As a preferred embodiment, the material of the connecting member 30 and the housing 1 is hard plastic, such as PC+ABS (engineering plastic alloy), PC+glass fiber or PA+glass fiber, etc., and the material of the flexible member 31 is silica gel. Choosing the connecting member 30 to be made of hard plastic can more reliably depress the switch 20 when the pressing member 4 is pressed, and at the same time avoid wear and damage caused by the extrusion of the flexible member 31 . Preferably, the connecting piece 30, the flexible piece 31 and the housing 1 are molded together by two-color injection molding, which can reduce assembly steps and improve production efficiency.

As a preferred embodiment, the outer periphery of the connecting member 30 and the inner wall of the through hole 11 are equidistant. In this way, when the connecting member 30 moves, the flexible member 31 can be driven to deform evenly, and the restoring force generated on the connecting member 30 is also It is more uniform and the connecting piece 30 is less likely to shift or tilt.

As shown in FIGS. 6 to 10 , the housing 1 is provided with a flat first surface 14 , and the flexible member 31 is connected to the first surface 14 . In order to improve the connection force between the flexible member 31 and the housing 1 , the housing 1 is provided with a recessed first groove 12 on the first surface 14 , and the flexible member 31 is provided with a third recess connected to the first groove 12 . a convex part 312, the first protrusion 312 is filled in the first groove 12, which can enhance the firmness of the combination of the flexible member 31 and the housing 1 and prevent the two from being separated. In a preferred embodiment, the number of the first grooves 12 is multiple. As shown in Figures 7 and 8, the plurality of first grooves 12 are spaced apart and surround the periphery of the through hole 11. Correspondingly, the first groove 12 is The number of the protrusions 312 is the same as the number of the first grooves 12 , and the protrusions 312 are correspondingly filled in the first grooves 12 . In another preferred embodiment, as shown in FIG. 10 , the number of the first groove 12 is one, which is annular and surrounds the periphery of the through hole 11 . Correspondingly, the first convex portion 312 is annular convex. This can further enhance the sealing while improving the firmness of the connection.

As shown in Figure 11, the connector 30 includes a body 300, a flange 301 connected to the body 300, and a boss 302 protruding outward from the body 300. The flange 301 protrudes outward along the radial direction of the body 300, and is connected with the boss 302. The platforms 302 are respectively located on both sides of the body 300 , wherein the flange 301 is located on the side of the body 300 close to the circuit board 2 , and the boss 302 is located on the side of the body 300 close to the pressing panel 40 .

In order to improve the connection force between the flexible member 31 and the connecting member 30, as shown in Figures 7 and 11, a recessed second groove 3000 is provided on the second surface 3001 of the body 300 facing the pressing panel 40. The flexible member 31 There is a second protrusion 311 connected in the second groove 3000. By filling the second protrusion 311 in the second groove 3000, the firmness of the connection between the two can be enhanced. As a preferred embodiment, the body 300 is provided with a plurality of second grooves 3000 arranged at intervals. In Figure 11, there are six second grooves 3000. The six second grooves 3000 are symmetrically arranged on both sides of the body 300. side, and the second groove 3000 communicates with the outer peripheral surface of the body 300. Correspondingly, the number of the second protrusions 311 is the same as the number of the second groove 3000, and is filled in the second groove 3000.

As a preferred embodiment, referring to FIG. 9 , the flange 301 and the flexible member 31 are attached toward the third surface 313 of the circuit board 2 . In this way, the connection force between the connecting member 30 and the flexible member 31 can be improved while effectively This prevents the connecting piece 30 from being separated from the flexible piece 31 in the direction of pressing the panel 40, and the connection is more reliable.

As a preferred embodiment, the outer peripheral surface of the body 300 is set as a tapered surface, and its cross-sectional size gradually decreases in the direction away from the circuit board 2. On the one hand, it can increase the contact area between the body 300 and the flexible member 31, and improve The connection strength, on the other hand, can prevent the connecting member 30 from being separated from the flexible member 31 in the direction of pressing the panel 40, making the connection between the two more reliable.

In a preferred embodiment, as shown in FIG. 13 , the pressing panel 40 and the boss 302 of the connecting member 30 are connected through adhesive connection, such as through glue or double-sided tape. In another preferred embodiment, as shown in Figures 2, 4, 9 and 11, the boss 302 of the connector 30 is provided with an insertion hole 303, The number of the jacks 303 is not limited, and two jacks 303 are shown in the figure. The jacks 303 preferably penetrate the body 300 . The pressing member 4 also includes an inserting post 42 connected to the pressing panel 40. The inserting post 42 is preferably injection molded integrally with the pressing panel 40. It is inserted into the socket 303 and is sealed with the socket 303 by glue, for example. The plug 42 can be coated with glue and then inserted into the plug hole 303, which not only improves the connection strength between the two, but also effectively achieves sealing. Further, as shown in FIG. 12 , the jack 303 is connected to the fourth surface 304 of the connector 30 facing the circuit board 2 , and a glue groove 305 surrounding the periphery of the jack 303 is provided on the fourth surface 304 . The glue groove 305 can Holds the glue, further improving the seal.

The housing 1 is provided with a guide hole 13 communicating with the through hole 11 , and the pressing member 4 is slidably coupled with the guide hole 13 . The pressing panel 40 is disposed in the guide hole 13. In a preferred embodiment, the pressing panel 40 is clearance-fitted with the guide hole 13, so that the pressing member 4 is not in direct contact with the housing 1, and the pressing member 4 is in direct contact with the guide hole. The sliding coupling of 13 enables the pressing member 4 to move along the guide hole 13. Furthermore, the pressing panel 40 is partially exposed from the guide hole 13, allowing for direct pressing operation by human hands. In another preferred embodiment, referring to FIGS. 4 to 9 , the pressing member 4 further includes a decorative member 43 connected to the pressing panel 40 , and the decorative member 43 is connected to the fifth surface 401 of the pressing panel 40 facing away from the circuit board 2 and has a ring portion 430 covering the outer circumferential surface of the pressing panel 40. The decorative piece 43 is adapted to the guide hole 13. It has a clearance fit with the guide hole 13 and can move along the guide hole 13. The decorative piece 43 is pressed to drive the connection. Piece 30 moves.

The arrangement of the guide hole 13 can guide the pressing member 4 to move along the axis of the guide hole 13, preventing the pressing member 4 from tilting or getting stuck during movement, so that the connecting member 30 can trigger the switch 20 accurately and reliably. At the same time, the guide hole 13 allows the pressing member 4 to be partially embedded in the housing 1, and only the outer end surface (or part of the outer peripheral surface) of the pressing member 4 is exposed to the housing 1 for human hands to press. On the one hand, it enhances the aesthetics. On the other hand, it can prevent the pressing member 4 from being artificially lifted and damaged, and the reliability is better.

The decorative piece 43 is preferably made of metal material, such as aluminum alloy, which has a better texture. Knurled patterns can also be provided on the outer end surface 431 of the decorative piece 43 to increase friction and further enhance the feel and aesthetics of use.

The decorative part 43 and the pressing panel 40 are preferably connected by adhesive. In a preferred embodiment, the decorative part 43 and the pressing panel 40 are connected by double-sided adhesive. In another preferred embodiment, The decorative part 43 and the pressing panel 40 are adhered to each other by glue. As shown in Figure 14, a glue groove 400 is provided on the fifth surface 401 of the pressing panel 40 and the decorative part 43, which can accommodate glue and prevent the glue from flowing out of the decorative part 43. and overflow from the gap between the pressing member 4 and the pressing member 4.

The present invention also proposes an earphone head, which includes the button structure described above. As shown in Figure 15, the earphone head also includes a cover 5 connected to the open end of the receiving cavity 10 and a vibrating sound generator connected to the cover 5. Device 50. The vibrating sound-generating device 50 can generate vibration, and when the cover 5 is in contact with the human facial skin, the user can hear the sound. By applying different pressing methods (such as long press, short press, double click, etc.) to the button structure, different control instructions can be generated, such as controlling the power on and off, pausing, switching songs, answering calls, etc.

The present invention also proposes a bone conduction earphone, which includes the above-mentioned button structure or earphone head.

As shown in Figure 16, the bone conduction earphone includes a control compartment 6, a battery compartment 60, a first earphone head 61, a second earphone head 62, a neck cord 63 connected between the control compartment 6 and the battery compartment 60, There is a first earhook 64 between an earphone head 61 and the control compartment 6 and a second earhook 65 connected between the second earphone head 62 and the battery compartment 60 .

When in use, the neckband wire 63 is wrapped around the person's neck, the first ear hook 64 and the second ear hook 65 are hooked above the person's ear, and the first earphone head 61 and the second earphone head 62 are respectively located on the head. On both sides, and in contact with the skin of the part of the face close to the ears, at least one of the first earphone head 61 and the second earphone head 62 is provided with the button structure described above.

The above are only specific embodiments of the present invention, and any other improvements made based on the concept of the present invention are deemed to be within the protection scope of the present invention.

Claims (13)

1. A key structure is characterized by including:

   The housing (1) is provided with a receiving cavity (10) and a through hole (11) connecting the receiving cavity (10) with the outside world;

   A circuit board (2) is provided in the receiving cavity (10), and the circuit board (2) includes a switch (20) corresponding to the through hole (11);

   The sealing assembly (3) includes a connecting piece (30) arranged opposite to the switch (20) and a flexible piece (31) connected between the connecting piece (30) and the housing (1), so The outer edge of the flexible part (31) is connected to the housing (1), the flexible part (31) is provided with a mounting hole (310), and the connecting piece (30) is provided in the mounting hole (310) Inside, the flexible member (31) and the connecting member (30) cooperate to seal the through hole (11); and,

   The pressing member (4) is connected to the connecting member (30). The pressing member (4) includes a pressing panel (40) located outside the through hole (11).
2. The key structure according to claim 1, characterized in that a first groove (12) is provided on the first surface (14) of the housing (1) connected to the flexible member (31), and the flexible member (31) is provided with a first groove (12). The member (31) is provided with a first protruding portion (312) connected to the first groove (12);

   The first groove (12) is annular and surrounds the outside of the through hole (11); or the housing (1) includes a plurality of the first grooves (12), and a plurality of the first grooves (12) are The first groove (12) surrounds the outside of the through hole (11).
3. The key structure according to claim 1, characterized in that the connecting member (30) includes a body (300), and the body (300) is disposed on the second surface (3001) facing the pressing member (4). There is a second groove (3000), and the flexible member (31) is provided with a second protrusion (311) connected in the second groove (3000).
4. The key structure of claim 3, wherein the connecting member (30) further includes a flange (301) connected to the body (300), and the flange (301) is connected to the flexible member. (31) Laminate toward the third surface (313) of the circuit board (2).
5. The key structure according to claim 3, characterized in that the outer peripheral surface of the body (300) is a tapered surface, and its cross-sectional size gradually decreases in a direction away from the circuit board (2).
6. The key structure of claim 3, wherein the connecting member (30) further includes a boss (302) protruding from the body (300) toward the pressing panel (40). The panel (40) is in contact with the boss (302).
7. The key structure according to any one of claims 1 to 6, characterized in that the connecting member (30) is provided with an insertion hole (303), and the pressing member (4) further includes a connecting member with the pressing panel (40). ) connected to each other, the plug (42) is inserted into the plug hole (303), and the plug (42) and the plug hole (303) are sealed by glue.
8. The key structure according to any one of claims 1 to 6, characterized in that the housing (1) is provided with a guide hole (13) communicating with the through hole (11), and the pressing member (4 ) is slidably coupled with the guide hole (13).
9. The key structure according to claim 8, characterized in that the pressing panel (40) is slidingly coupled with the guide hole (13), or the pressing member (4) further includes a key element connected with the pressing panel (13). 40) A decorative piece (43) connected away from the fifth surface (401) of the circuit board (2), and the decorative piece (43) is slidably matched with the guide hole (13).
10. The key structure according to any one of claims 1 to 6, characterized in that the material of the connecting member (30) and the housing (1) is hard plastic, and the material of the flexible member (31) is Made of silicone, the connecting piece (30), flexible piece (31) and housing (1) are molded together through two-color injection molding.
11. The key structure according to any one of claims 1 to 6, characterized in that the pressing member (4) is not in direct contact with the housing (1).
12. An earphone head, characterized by including the button structure according to any one of claims 1 to 11.
13. A bone conduction earphone, characterized in that it includes a button structure as claimed in any one of claims 1 to 11 or an earphone head as claimed in claim 12.