CN218101035U - Button structure and earphone - Google Patents

Abstract

The utility model belongs to the technical field of can only dress electronic equipment, especially, relate to a button structure and earphone. The key structure comprises a conducting strip, an induction coil and a shell with an accommodating cavity, wherein the induction coil is accommodated in the accommodating cavity, and the conducting strip is connected with the inner wall of the accommodating cavity, is opposite to the induction coil and is arranged at intervals; the conductive sheet has a first position state and a second position state relative to the induction coil; when the induction coil is in the first position state, the conducting strip and the induction coil have a first distance; when the induction coil is in the second position state, the conducting strip and the induction coil have a second distance; the first pitch and the second pitch of the same point on the conductive sheet are not equal.

Description

Button structure and earphone

Technical Field

The utility model belongs to the technical field of can only dress electronic equipment, especially, relate to a button structure and earphone.

Background

The TWS (True, wireless and Stereo) headset refers to a "real Wireless Stereo" headset, and both the left headset and the right headset of the same pair of TWS headset can be wirelessly connected by bluetooth; the novel multifunctional umbrella has the advantages of small volume, smooth lines of the outer contour, simple external structure and convenience in wearing and use, and is popular with consumers.

At present, due to pursuit of product beauty and wearing experience, a traditional mechanical key with large occupied space is inconvenient to install on a machine body of a TWS earphone, and a common TWS earphone usually adopts a capacitor structure as a key to realize a human-computer interaction function of the TWS earphone; the method is characterized in that a human body is used as a conductive medium, and when a human hand approaches to an electrode of a capacitor structure, the capacitance value of the electrode is increased, so that the current is increased accordingly; the controller controls the corresponding elements to implement the corresponding functions by recognizing such a change in current.

However, when a human body approaches to the earphone, the human body is likely to touch the earphone by mistake, and wearing articles such as gloves made of insulating materials can disable the keys, thereby causing inconvenience to users.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a button structure and an earphone, and the problem that how to realize the button function and improve the convenience and flexibility of operation is solved.

In order to achieve the purpose, the technical scheme adopted by the application is as follows:

on one hand, the key structure comprises a conducting strip, an induction coil and a shell with a containing cavity, wherein the induction coil is contained in the containing cavity, and the conducting strip is connected with the inner wall of the containing cavity, is opposite to the induction coil and is arranged at intervals;

the conductive sheet has a first position state and a second position state relative to the induction coil; when the induction coil is in the first position state, the conducting sheet and the induction coil have a first distance; when the induction coil is in the second position state, the conducting sheet and the induction coil have a second distance; the first pitch and the second pitch of the same point on the conductive sheet are not equal.

In one embodiment, the plane defined by the induction coil is parallel to the plane defined by the conductive sheet.

In one embodiment, the projection of the conductive sheet towards the induction coil completely covers the induction coil.

In one embodiment, a pressing part for being pressed by a human hand is convexly arranged on the outer side of the shell corresponding to the position of the conducting strip.

In one embodiment, the key structure further includes a first bracket received in the receiving cavity and connected to the housing, the first bracket has a mounting surface facing the conductive sheet, and the induction coil is disposed on the mounting surface.

In one embodiment, the first bracket is provided with a limiting groove, a limiting part matched with the limiting groove is convexly arranged at a corresponding position on the wall of the accommodating cavity, and at least part of the limiting part is accommodated in the limiting groove.

In one embodiment, the key structure further comprises a second bracket accommodated in the accommodating cavity and connected with the shell; the second support is abutted against the outer surface of the bottom of the limiting groove, and the second support is extruded towards the limiting part.

In one embodiment, the key structure further comprises a flexible circuit board, the flexible circuit board is attached to the mounting surface, and the induction coil is electrically mounted on the flexible circuit board.

In one embodiment, the housing includes a front shell and a rear shell disposed opposite to the front shell, the rear shell is recessed away from the front shell and forms the accommodating cavity with an opening, the front shell is connected to the rear shell and covers the opening, and the conductive sheet is connected to the rear shell.

On the other hand, still provide an earphone, include the button structure, earphone still includes treater and functional element, functional element with induction coil all with treater electric connection.

The beneficial effect of this application lies in: the shell is provided with an accommodating cavity, the accommodating cavity provides an installation space for the conducting strip and the induction coil, and meanwhile, the inner wall of the shell has supporting and fixing functions on the conducting strip and the induction coil; the conducting strip and the induction coil are oppositely arranged, the conducting strip is normally kept at a first position or a second position, and a fixed first distance or a fixed second distance is kept between the conducting strip and the induction coil; when the conducting strip is switched between the first position and the second position, because the first distance and the second distance are not equal, the current flowing through the induction coil is slightly changed, so that the induction coil outputs a preset electric signal, and the induction coil is connected in a circuit, and the key function can be realized through the preset electric signal. In addition, the key operation can be performed only by slightly deforming the corresponding part of the shell and driving the conducting plate to switch between the first position and the second position, and the operation is not influenced by the material of an object outside the shell. In conclusion, the key function is achieved, and the technical problems of convenience and flexibility of operation are improved.

Drawings

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

Fig. 1 is a schematic structural diagram of a key structure according to an embodiment of the present application;

fig. 2 is a perspective structural view of an earphone according to another embodiment of the present application;

fig. 3 is an exploded view of the earphone shown in fig. 2;

FIG. 4 is a partial block diagram of the headset shown in FIG. 2;

fig. 5 is a partially enlarged view of a point a in fig. 4.

Wherein, in the figures, the various reference numbers:

100. a key structure; 10. an induction coil; 20. a conductive sheet; 30. a housing; 31. a front housing; 32. a rear housing; 321. a pressing part; 322. a limiting part; 33. an accommodating cavity; 40. a first bracket; 41. a limiting bump; 411. a limiting groove; 42. a mounting surface; 50. a second bracket; 60. a flexible circuit board; 200. an earphone; 70. a processor; 80. a functional element.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the scope of the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application, and the specific meaning of the terms will be understood by those skilled in the art according to the particular situation. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.

Referring to fig. 1, an embodiment of the present application provides a key structure 100 that can be electrically installed in an electronic device for a predetermined human-computer interaction function. The key structure 100 includes a conductive sheet 20, an induction coil 10 and a housing 30 having a receiving cavity 33; the induction coil 10 is accommodated in the accommodating cavity 33, and the conducting strip 20 is connected with the inner wall of the accommodating cavity 33 and is opposite to the induction coil 10 and arranged at intervals; the conductive sheet 20 has a first position state and a second position state relative to the induction coil 10; in the first position state, the conducting strip 20 and the induction coil 10 have a first distance; in the second position state, the conducting strip 20 and the induction coil 10 have a second distance; the first pitch and the second pitch of the same point on the conductive sheet 20 are not equal. It can be understood that when the conductive sheet 20 is switched between the first position and the second position, the distance between the induction coil 10 and the conductive sheet 20 is changed, thereby enabling the induction coil 10 to output a predetermined electrical signal. Alternatively, the housing 30 may be a housing of an electronic device such as an earphone 200, an oven, a microwave oven, a washing machine, an induction cooker, or a rice cooker.

Referring to fig. 1, it can be understood that, in the present embodiment, the housing 30 has an accommodating cavity 33, the accommodating cavity 33 provides an installation space for the conductive sheet 20 and the induction coil 10, and meanwhile, the inner wall of the housing 30 has supporting and fixing functions for both the conductive sheet 20 and the induction coil 10; the conducting strip 20 and the induction coil 10 are oppositely arranged, the conducting strip 20 is normally kept at a first position or a second position, and a fixed first distance or a fixed second distance is kept between the conducting strip 20 and the induction coil 10; when the conductive sheet 20 is switched between the first position and the second position, the current flowing through the induction coil 10 slightly changes due to the unequal first and second distances, so that the induction coil 10 outputs a predetermined electrical signal, and the induction coil 10 is connected to a circuit, thereby realizing the key function through the predetermined electrical signal. In addition, the key operation can be performed only by slightly deforming the corresponding portion of the housing 30 and driving the conductive sheet 20 to switch between the first position and the second position, and the operation is not affected by the material of the object outside the housing 30. In conclusion, the key function is achieved, and the technical problems of convenience and flexibility of operation are improved.

It can be understood that, the key structure 100 is electrically connected to a chip or other structure having a signal processing function, and then the chip is electrically connected to a switch, a player or a microphone or other element having a predetermined function, that is, the predetermined electrical signal is obtained to control the corresponding element to implement a corresponding human-computer interaction function.

Optionally, the housing 30 has an elastic restoring force, and the position of the housing 30 corresponding to the conductive sheet 20 can drive the conductive sheet 20 to move from the first position to the second position or from the second position to the first position under the action of an external force.

Alternatively, the first pitch is greater than the second pitch, and the induction coil 10 outputs a predetermined electrical signal when the conductive sheet 20 moves from the first position to the second position.

Alternatively, the conductive sheet 20 is a sheet-like or plate-like structure made of a conductive material.

Alternatively, the conductive sheet 20 is a metal sheet.

Optionally, the conductive sheet 20 is a copper sheet.

Referring to fig. 3 and 5, optionally, the key structure 100 further includes a PCB circuit board, and the induction coil 10 is a copper foil coil drawn on the PCB circuit board; alternatively, the key structure 100 further includes a flexible circuit board 60, and the induction coil 10 is a copper foil layer embedded in the flexible circuit board 60.

Referring to fig. 1 and 5, optionally, in the present embodiment, the plane defined by the induction coil 10 is parallel to the plane defined by the conductive sheet 20. It will be appreciated that when the two are arranged in parallel, the conductive sheet 20 has a greater effect on the induction coil 10, thereby making the induction coil 10 more sensitive.

Referring to fig. 5, optionally, the wall surface of the accommodating cavity 33 for mounting the conductive sheet 20 is parallel to the plane defined by the induction coil 10, and the conductive sheet 20 is attached to the corresponding wall surface of the accommodating cavity 33. It can be understood that an external force is applied to the outside of the case 30 to drive the conductive sheet 20 toward the induction coil 10; when the conductive sheet 20 is attached to the corresponding wall surface of the accommodating cavity 33, the contact area between the conductive sheet and the housing 30 is increased, and the feedback to the external force action is more obvious, that is, the conductive sheet is easier to move towards the induction coil 10 under the external force action; further, the key structure 100 is made more sensitive.

Referring to fig. 1 and fig. 5, alternatively, in the present embodiment, the projection of the conductive sheet 20 toward the induction coil 10 completely covers the induction coil 10. It can be understood that in the present embodiment, the area of the conductive sheet 20 is larger than the area determined by the outermost circle of the induction coil 10, in this case, the influence of the conductive sheet 20 on the induction coil 10 is increased, and the sensitivity of the induction coil 10 is improved. Alternatively, the conductive sheet 20 may be disposed on the wall of the housing 30.

Referring to fig. 3 and fig. 5, optionally, in the present embodiment, a pressing portion 321 pressed by a human hand is protruded at a position corresponding to the conductive sheet 20 on the outer side of the housing 30. It can be understood that applying an external force to a position on the housing 30 corresponding to the conductive sheet 20 more easily reduces the distance between the conductive sheet 20 and the induction coil 10; the pressing portion 321 is arranged at the position, which is beneficial for direct identification by touching of a human hand, and the convenience of use of the key structure 100 is increased.

Referring to fig. 3 and fig. 5, optionally, in the present embodiment, the key structure 100 further includes a first bracket 40 accommodated in the accommodating cavity 33 and connected to the housing 30, the first bracket 40 has a mounting surface 42 facing the conductive sheet 20, and the induction coil 10 is disposed on the mounting surface 42.

Referring to fig. 3 and 5, it can be understood that the first bracket 40 has supporting and fixing functions on the induction coil 10, so that the induction coil 10 is not easily shaken or separated from an installation position during use, and the structural stability is further enhanced. It will be appreciated that the mounting face 42 facing the conductive sheet 20 helps to secure the induction coil 10 in position opposite the conductive sheet 20. It will be appreciated that the first support 40 is separate from the housing 30, which facilitates relative movement between the housing 30 and the first support 40, thereby facilitating movement of the conductive plate 20 towards or away from the induction coil 10.

Referring to fig. 1 and 5, alternatively, in the present embodiment, the mounting surface 42 is parallel to the plane defined by the conductive sheet 20; the induction coil 10 is laid out on the mounting surface 42 such that the plane defined by the induction coil 10 is parallel to the plane defined by the conductive sheet 20.

Referring to fig. 3 and fig. 5, optionally, in the present embodiment, the first bracket 40 is provided with a limiting groove 411, a corresponding position on the cavity wall of the accommodating cavity 33 is convexly provided with a limiting portion 322 adapted to the limiting groove 411, and at least a portion of the limiting portion 322 is accommodated in the limiting groove 411. It can be understood that, in the present embodiment, the first bracket 40 can be fixedly installed in the accommodating cavity 33 by the cooperation of the limiting groove 411 and the limiting portion 322; wherein, the sidewall of the limiting portion 322 abuts against the corresponding wall of the limiting slot 411, thereby limiting the displacement of the first bracket 40.

Referring to fig. 3 and 5, optionally, the limiting portion 322 is completely disposed in the limiting slot 411, and each inner wall of the limiting slot 411 is respectively attached to the corresponding peripheral sidewall of the limiting portion 322. It will be appreciated that in this embodiment, the form of the snug connection helps to enhance the retention of the first bracket 40 by the retention portion 322.

Referring to fig. 3 and 5, optionally, one end of the first bracket 40 is connected to a limit protrusion 41, and the limit slot 411 is opened on the limit protrusion. It is understood that, in the present embodiment, the limit projection 41 and the first bracket 40 are integrally formed; or, the limiting convex block 41 and the first bracket 40 are separately processed and then fixedly connected in a gluing or threaded manner.

Referring to fig. 3 to fig. 5, optionally, in the present embodiment, the key structure 100 further includes a second bracket 50 accommodated in the accommodating cavity 33 and connected to the housing 30; the second bracket 50 abuts against the outer surface of the groove bottom of the stopper groove 411, and presses the second bracket 50 toward the stopper portion 322. It can be understood that, in the present embodiment, the second bracket 50 presses the first bracket 40 toward the corresponding side surface of the position-limiting portion 322, so that the first bracket 40 can be effectively prevented from moving in the direction away from the position-limiting portion 322, and the stability of the whole structure is further enhanced.

Referring to fig. 3 to fig. 5, optionally, in the embodiment, the second bracket 50 abuts against one end of the limiting protrusion 41 away from the limiting groove 411, and presses the limiting protrusion 41 toward the limiting portion 322.

Referring to fig. 3, optionally, in the present embodiment, the housing 30 includes a front shell 31 and a rear shell 32 disposed opposite to the front shell 31, the rear shell 32 is recessed away from the front shell 31 and forms an accommodating cavity 33 with an opening, the front shell 31 is connected to the rear shell 32 and covers the opening, and the conductive sheet 20 is connected to the rear shell 32.

It can be understood that, in the present embodiment, the housing 30 is designed separately, so as to facilitate the installation of the conductive sheet 20, the induction coil 10, the first bracket 40, the second bracket 50, and the like in the accommodating cavity 33.

Optionally, the conductive sheet 20 has a corresponding wall thickness of 0.5 mm. It will be appreciated that a smaller wall thickness is more conducive to applying force to the corresponding location of the housing 30 to drive movement of the conductive plate 20.

Optionally, in the present embodiment, the wall thickness of the rear shell 32 is 0.5 mm.

Referring to fig. 3 and fig. 5, optionally, in the present embodiment, the key structure 100 further includes a flexible circuit board 60, the flexible circuit board 60 is attached to the connection mounting surface 42, and the induction coil 10 is electrically installed in the flexible circuit board 60. It is understood that in the present embodiment, the induction coil 10 may be a copper foil layer structure embedded in the flexible circuit board 60, or may be a conductive coil electrically mounted on the flexible circuit board 60.

Referring to fig. 2 to 4, the present invention further provides an earphone 200, where the earphone 200 includes a key structure 100, and the specific structure of the key structure 100 refers to the above embodiments, and since all technical solutions of all the above embodiments are adopted, all beneficial effects brought by the technical solutions of the above embodiments are also achieved, and are not repeated herein.

Referring to fig. 2 to 4, the earphone 200 further includes a processor 70 and a functional element, wherein the functional element and the induction coil 10 are electrically connected to the processor 70, and the processor 70 can receive a predetermined electrical signal and control the functional element to perform a corresponding operation.

It is understood that, in the present embodiment, after the key structure 100 is pressed, the induction coil 10 releases a predetermined electrical signal to the processor 70, and the processor 70 controls the functional element 80 to implement a corresponding human-machine interaction function after receiving the predetermined electrical signal. Optionally, the processor 70 is a microprocessor chip. Alternatively, the functional element 80 is a switch, a microphone or a player, etc.

The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims (10)

1. A key structure is characterized by comprising a conducting strip, an induction coil and a shell with an accommodating cavity, wherein the induction coil is accommodated in the accommodating cavity, and the conducting strip is connected with the inner wall of the accommodating cavity, is opposite to the induction coil and is arranged at intervals;

the conductive sheet has a first position state and a second position state relative to the induction coil; when the induction coil is in the first position state, the conducting plate and the induction coil have a first distance; when the induction coil is in the second position state, the conducting plate and the induction coil have a second distance; the first pitch and the second pitch of the same point on the conductive sheet are not equal.

2. The key structure of claim 1, wherein the plane defined by said induction coil is parallel to the plane defined by said conductive sheet.

3. The key structure of claim 2, wherein a projection of the conductive sheet toward the induction coil completely covers the induction coil.

4. The key structure of claim 1, wherein a pressing portion for being pressed by a human hand is protruded from the outer side of the housing corresponding to the position of the conductive sheet.

5. The key structure according to any one of claims 1-4, further comprising a first bracket received in the receiving cavity and connected to the housing, the first bracket having a mounting surface facing the conductive sheet, the induction coil being disposed on the mounting surface.

6. The key structure of claim 5, wherein the first frame is provided with a limiting groove, a corresponding position on the wall of the accommodating cavity is provided with a limiting portion which is matched with the limiting groove in a protruding manner, and at least part of the limiting portion is accommodated in the limiting groove.

7. The key structure of claim 6, further comprising a second bracket received in the receiving cavity and coupled to the housing; the second support is abutted to the outer surface of the bottom of the limiting groove, and the second support is extruded towards the limiting part.

8. The key structure of claim 5, further comprising a flexible circuit board, wherein the flexible circuit board is attached to the mounting surface, and the induction coil is electrically mounted on the flexible circuit board.

9. The key structure of any one of claims 1-4, wherein the housing comprises a front shell and a rear shell disposed opposite to the front shell, the rear shell is recessed away from the front shell and forms the receiving cavity with an opening, the front shell is connected to the rear shell and covers the opening, and the conductive strip is connected to the rear shell.

10. An earphone, comprising a key structure according to any one of claims 1-9, the earphone further comprising a processor and a functional element, wherein the functional element and the induction coil are both electrically connected to the processor.

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