CN222281829U

CN222281829U - Key switch structure

Info

Publication number: CN222281829U
Application number: CN202420998032.4U
Authority: CN
Inventors: 易辉; 王实果; 刘娟; 贺伟锋
Original assignee: Shenzhen Jumper Medical Equipment Co Ltd
Current assignee: Shenzhen Jumper Medical Equipment Co Ltd
Priority date: 2024-05-07
Filing date: 2024-05-07
Publication date: 2024-12-31
Anticipated expiration: 2034-05-07

Abstract

The utility model discloses a key switch structure, including a shell, a key and an elastic member, wherein the shell is provided with a main board, and the main board has a contact switch. The key is movably provided on the shell; the elastic member is connected to the shell, and the elastic member is provided on the movable path of the key; the key has a first stroke moving toward the elastic member and a second stroke moving away from the elastic member, and the key can drive the elastic member to press the contact switch when moving along the first stroke. By providing a movable key and an elastic member, when the key is released after the contact switch is turned on by pressing the key, the elastic force of the elastic member can smoothly restore the key to its original position, and the key is not easily stuck.

Description

Key switch structure

Technical Field

The present disclosure relates to electronic devices, and particularly to a key switch structure.

Background

When the electronic product is used, a control board is usually arranged, the control board is connected with control circuits, each control circuit can control the opening and closing of one or a plurality of functions in the electronic product, and a contact switch is generally selected as a switch for controlling the on-off of the circuit in the control circuit, namely, the on-off of the circuit can be realized by pressing the contact switch. When in practical use, a movable plastic key is often arranged on the shell of the electronic product, and the contact switch is driven to be turned on or off by pressing the plastic key.

However, the plastic key in the related art is generally fixed on the contact switch, and directly acts on the contact switch, or a part of the structure of the plastic key is fixed on the electronic product by a welding technology, and the contact switch is directly pressed by the movable part of the plastic key. The arrangement mode of the plastic keys in the related art is troublesome in assembly and easy to cause the phenomenon of clamping keys.

Disclosure of utility model

In view of the above, it is necessary to provide a key switch structure that has a simple structure and is not easy to be locked.

The embodiment of the utility model provides a key switch structure, which comprises:

a housing provided with a main board having a contact switch;

the key is movably arranged on the shell;

The elastic piece is connected to the shell and is arranged on the moving path of the key;

The key is provided with a first travel moving towards the elastic piece and a second travel moving away from the elastic piece, and the elastic piece can be driven to press the contact switch when the key moves along the first travel.

In some embodiments, the elastic member includes an abutting portion and a connecting portion connected together, the abutting portion being disposed opposite to the contact switch, the connecting portion being connectable to the key.

In some embodiments, the key comprises a contact portion, wherein a surrounding portion is arranged on the contact portion, a connecting groove is formed in the surrounding portion, and the connecting portion is inserted and matched in the connecting groove.

In some embodiments, the connecting portion is provided with a positioning hole, a positioning piece is convexly arranged at a position of the contact portion corresponding to the positioning hole, and the positioning piece can be inserted and matched with the positioning hole.

In some embodiments, the elastic member includes an elastic body, the abutting portion and the connecting portion are respectively connected to opposite ends of the elastic body, and the elastic member further includes an elastic connecting member, one end of the elastic connecting member is connected to the elastic body, and the other end is connected to the housing.

In some embodiments, the elastic member is provided with two elastic connecting members, one ends of the two elastic connecting members are arranged at intervals and are respectively connected to two opposite sides of the elastic main body, and the other ends of the two elastic connecting members are connected to the shell in an extending manner in opposite directions.

In some embodiments, the elastic connection member is provided in an arc shape, or a part of the elastic connection member is provided in an arc shape, and the other part of the elastic connection member is provided in a linear shape.

In some embodiments, the housing is provided with a mounting hole, the contact portion is provided with a fastening member, one end of the fastening member away from the contact portion is provided with a fastening portion, the fastening member is disposed through the mounting hole, and the fastening portion can be fastened on the housing.

In some embodiments, a supporting table located in the mounting hole is further disposed on the housing, and the key can abut against the supporting table when moving along the first stroke.

In some embodiments, the housing includes a first housing and a second housing connectable together, the key and the elastic member are both connected to the first housing, and the main board is connected to the second housing.

The embodiment of the utility model has the following beneficial effects:

According to the key switch structure in the above embodiment, by setting the movable key and the elastic member, in the process of applying an external force on the key to drive the key to move towards the elastic member, the key can be abutted against the elastic member to force the elastic member to deform, and the deformed elastic member can be abutted against the contact switch to press the contact switch, so that the circuit is turned on, and when the external force is removed, the elastic member is restored under the action of the elastic force and is separated from the contact switch, so that the contact switch is in an off state, and the circuit is turned off. Therefore, through setting up movable button and elastic component, utilize the deformation of elastic component can realize turning on contact switch, utilize the resilience force of elastic component can realize the button and resume the normal position and make contact switch break-off to realize the switch-on and the break-off of circuit, this simple structure, manufacturing cost is lower, and the equipment is also relatively easy. And because the elastic action of the elastic piece is utilized to rebound the key, when the key is released after the contact switch is turned on by pressing the key, the elastic force of the elastic piece can smoothly restore the key to the original position, and the phenomenon of key clamping is not easy to occur.

Drawings

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

Wherein:

FIG. 1 shows an exploded view of a key switch structure provided in accordance with the present utility model;

Fig. 2 shows a cross-sectional view of a key switch structure provided according to the present utility model;

FIG. 3 shows a schematic structural view of a first housing and spring mounting structure provided in accordance with the present utility model;

fig. 4 shows a schematic structural diagram of a key according to the present utility model.

Description of main reference numerals:

1. The device comprises a shell, 11, a first shell, 111, a supporting table, 112, a mounting hole, 12, a second shell, 13, a main board, 131, a contact switch, 2, a key, 21, a contact part, 22, a fastening piece, 221, a fastening part, 23, a surrounding part, 231, a connecting groove, 232, a positioning piece, 3, an elastic piece, 31, an elastic body, 32, an abutting part, 33, a connecting part, 331, a positioning hole, 34 and an elastic connecting piece.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Preferred embodiments of the present utility model are shown in the drawings. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

The utility model provides a key 2 switch structure, which can be used in an electronic product, in an embodiment, referring to fig. 1 and 2, the key 2 switch structure comprises a shell 1, a key 2 and an elastic piece 3, wherein the shell 1 main body structure is used for providing an installation supporting environment for the key 2 and the elastic piece 3, in addition, the shell 1 is also used for providing an installation supporting environment for a main board 13 in the electronic product, the main board 13 is provided with a contact switch 131, the contact switch 131 has an upper stroke and a lower stroke, a circuit is switched on when the contact switch 131 is pressed, the contact switch 131 returns when the contact switch is released, the circuit is closed, or after the contact switch 131 is pressed down and then the contact switch 131 is released again, the contact switch 131 is in a connection state.

The key 2 is movably arranged on the shell 1, the elastic piece 3 is connected to the shell 1, and the elastic piece 3 is arranged on the moving path of the key 2. The elastic piece 3 can deform under the action of external force, and can recover when the external force is removed. That is, when an external force is applied to the key 2, the key 2 can be pressed against the elastic member 3, the elastic member 3 can be forced to deform by continuously driving the key 2, and when the external force is removed, the elastic force of the elastic member 3 can drive the key 2 to move in the opposite direction.

The key 2 has a first stroke moving toward the elastic member 3 and a second stroke moving away from the elastic member 3, and referring to fig. 1, a path from M to N is shown as a path of the first stroke, and a path from N to M is shown as a path of the second stroke. The elastic member 3 can be driven to press the contact switch 131 when the key 2 moves along the first stroke to switch on the circuit, and the elastic member 3 is restored to the original state when the key 2 moves along the second stroke to separate from the contact switch 131 to switch off the circuit.

Through setting up movable button 2 and elastic component 3, apply external force drive button 2 towards the in-process of elastic component 3 activity on button 2, button 2 can butt on elastic component 3 to force elastic component 3 to warp, the elastic component 3 that produces deformation can butt on contact switch 131, with pressing contact switch 131, makes the circuit switch on, and when removing external force, elastic component 3 is recovered and is broken away from contact switch 131 under the effect of elasticity, and then makes contact switch 131 be in the off-state, makes the circuit break. Therefore, by arranging the movable key 2 and the elastic member 3, the contact switch 131 can be turned on by using the deformation of the elastic member 3, the key 2 can be restored to the original position and the contact switch 131 can be turned off by using the resilience force of the elastic member 3, so that the on and off of a circuit can be realized. Moreover, because the key 2 is rebounded by the elastic action of the elastic piece 3, when the key 2 is pressed to switch on the contact switch 131 and then the key 2 is released, the key 2 can be smoothly restored to the original position by the elastic force of the elastic piece 3, and the phenomenon of key clamping is not easy to occur.

In one embodiment, referring to fig. 1 to 4, the elastic member 3 includes an abutting portion 32 and a connecting portion 33 connected together, the abutting portion 32 is disposed opposite to the contact switch 131, and the connecting portion 33 can be connected to the key 2. By providing the connection portion 33 to connect to the key 2, the key 2 and the elastic member 3 can be more stable, and the abutting portion 32 can be abutted against the contact switch 131 when the key 2 drives the elastic member 3 to deform.

Specifically, the key 2 includes a contact portion 21, and an end surface of the contact portion 21 for applying an external driving force, for example, pressing the end surface with a finger, can move the key 2 along the first stroke. The other end surface of the contact portion 21 is convexly provided with a surrounding portion 23, a connecting groove 231 is formed around the surrounding portion 23, the shape and the size of the connecting groove 231 are matched with those of the connecting portion 33, the connecting portion 33 can be inserted and matched into the connecting groove 231, and when the connecting portion 33 is inserted and matched into the connecting groove 231, the side wall of the connecting portion 33 is preferably attached to the groove wall of the connecting groove 231.

The connecting groove 231 may be formed by one enclosing part 23 enclosing one closed structure at the end face of the contact part 21, or may be formed by a plurality of enclosing parts 23 having gaps, and is not limited herein.

In a specific embodiment, a positioning hole 331 is further formed at an end of the connecting portion 33 opposite to the abutting portion 32, and a positioning member 232 is disposed at a position of the contact portion 21 corresponding to the positioning hole 331, where the positioning member 232 can be inserted into and adapted to the positioning hole 331. When the connection portion 33 is inserted into the connection groove 231, the positioning piece 232 can be inserted into the positioning hole 331. Through the cooperation of locating hole 331 and setting element 232, when pegging graft connecting portion 33 to spread groove 231, can fix a position in advance, and through setting up locating hole 331 and setting element 232, can increase the stability of the relative position between contact portion 21 and connecting portion 33, the condition that is difficult for taking place button 2 and rocking when pressing button 2.

In an embodiment, referring to fig. 1 to 4, the elastic member 3 includes an elastic body 31, an abutting portion 32 and a connecting portion 33 respectively connected to opposite ends of the elastic body 31, and the elastic body 31, the connecting portion 33 and the abutting portion 32 may be connected together by gluing or welding, or the elastic body 31, the connecting portion 33 and the abutting portion 32 may be integrally formed and arranged, which is not limited herein.

The elastic member 3 further includes an elastic connecting member 34, and the elastic connecting member 34 is made of elastic material, such as elastic plastic or plastic material. One end of the elastic connecting piece 34 is connected to the elastic body 31, and the other end is connected to the housing 1, and the elastic connecting piece 34 makes the connection structure of the elastic body 31, the connection portion 33 and the abutting portion 32 in a suspended state.

By providing the elastic connection member 34, the contact portion 21 and the housing 1 can be connected, so that when the key 2 is pressed to drive the contact portion 21 to move, the elastic connection member 34 can deform, thereby providing a resilience force for the return of the key 2.

In a specific embodiment, the elastic member 3 may be provided with one elastic connection member 34, or may be provided with a plurality of elastic connection members 34 spaced apart, which is not limited herein. In this embodiment, the elastic member 3 is provided with two spaced elastic connecting members 34, one ends of the two elastic connecting members 34 are spaced and connected to opposite sides of the elastic body 31, and the other ends of the two elastic connecting members 34 are connected to the housing 1 in opposite directions.

It should be noted that in a preferred embodiment, two elastic connection members 34 are stacked in a manner to be disposed opposite to the center point of the contact portion 21. Through setting up two or more elastic connection piece 34, can connect the multiple position of contact portion 21 on shell 1 through elastic connection piece 34, not only can guarantee the resilience force, be favorable to promoting the feel when pressing button 2, can also guarantee that the periphery of contact portion 21 can both receive the elasticity effect, guarantee that the atress of contact portion 21 is even, especially when a plurality of elastic connection piece 34 are about the central symmetry of contact portion 21, when button 2 supports the contact portion 21 and moves towards contact switch 131, the contact portion 21 receives the elasticity even, can guarantee that contact portion 21 is difficult for taking place the slope.

In addition, in a specific embodiment, in order to secure the magnitude of the elastic deformation as much as possible, it is preferable that the elastic connection member 34 is provided in an arc shape, and the extending path of the elastic connection member 34 between the housing 1 and the contact portion 21 is perpendicular to the direction of the first stroke or the direction of the second stroke.

Or part of the structure of the elastic connecting piece 34 is arc-shaped, and the other part of the structure is linear, specifically, the middle position of the elastic connecting piece 34 is a linear structure, two end parts of the elastic connecting piece 34 are arc-shaped, the arc-shaped bending directions of the two end parts of the elastic connecting piece 34 are opposite, and the elastic connecting piece 34 is connected to the contact part 21 and the shell 1 respectively through the arc-shaped structure connection of the two end parts.

In one embodiment, the housing 1 is provided with a mounting hole 112, the mounting hole 112 is a through hole, the mounting hole 112 can be communicated into the housing 1, the main board 13 and the contact switch 131 are both located inside the housing 1, and the through hole is opposite to the contact switch 131.

The elastic member 3 is located in the mounting hole 112 and is connected to the wall of the mounting hole 112 through the elastic connecting member 34.

The contact portion 21 is provided with a buckling piece 22, the buckling piece 22 and the enclosing portion 23 are located on the same side of the contact portion 21, the end portion of the buckling piece 22 extends back to the contact portion 21, one end, away from the contact portion 21, of the buckling piece 22 is provided with a buckling portion 221, and the buckling portion 221 protrudes outwards. The fastening member 22 can be inserted through the mounting hole 112, and the fastening portion 221 can be fastened to the housing 1.

It should be noted that, the outer wall of the fastening member 22 can be attached to the inner wall of the mounting hole 112, and a plurality of fastening members 22 are preferably provided, in this embodiment, two fastening members 22 are provided, and the two fastening members 22 are symmetrically arranged. By providing the fastening member 22, when the elastic connecting member 34 is in the free state, the connecting portion 33 is inserted into the connecting groove 231, the top end of the connecting portion 33 abuts against the bottom of the connecting groove 231, and at this time, the abutting portion just abuts against the housing 1, that is, when the fastening portion 221 abuts against the housing 1, it can prevent the key 2 from continuing to move along the second stroke, so that the key 2 can be prevented from being sprung away from the elastic member 3 when the elastic force of the elastic connecting member 34 is too large.

The outer wall of the contact portion 21 is also bonded to the inner wall of the mounting hole 112, and the mounting hole 112 is opened in the first stroke or the second stroke direction. In this way, through the cooperation of the fastening piece 22 and the mounting hole 112, and through the cooperation of the contact part 21 and the mounting hole 112, the moving path of the key 2 in the downward pressing process can be limited, so that the stability of the hand feeling is ensured, the shaking is not easy to feel, and the experience of the key 2 is ensured.

It should be noted that the housing 1 is further provided with a supporting table 111 located in the mounting hole 112, the supporting table 111 is protruded on the inner wall of the mounting hole 112 around the inner wall of the mounting hole 112, and the supporting table 111 forms a step structure in the mounting hole 112. The outer wall of the fastening member 22 is configured to be attached to the inner wall of the supporting table 111, and the external dimension of the contact portion 21 and the external dimension of the mounting hole 112 are adapted, so that the contact portion 21 can abut on the supporting table 111 when the key 2 moves along the first stroke.

By providing the support base 111, the distance that the key 2 moves along the first stroke can be restricted, and it is ensured that excessive pressing does not occur in the case where the external force is excessive.

In one embodiment, the housing 1 includes a first shell 11 and a second shell 12 that can be connected together, a mounting hole 112 penetrates the first shell 11, the key 2 and the elastic member 3 are both connected to the first shell 11, and the main board 13 is connected to the second shell 12.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. A push-button switch structure, comprising:

a housing provided with a main board having a contact switch;

the key is movably arranged on the shell;

2. The key switch structure according to claim 1, wherein the elastic member includes an abutting portion and a connecting portion connected together, the abutting portion being disposed opposite to the contact switch, the connecting portion being connectable to the key.

3. The key switch structure according to claim 2, wherein the key comprises a contact portion, a surrounding portion is disposed on the contact portion, a connection groove is formed around the surrounding portion, and the connection portion is inserted and fitted in the connection groove.

4. The key switch structure according to claim 3, wherein the connecting portion is provided with a positioning hole, and the contact portion is provided with a positioning piece in a protruding manner at a position corresponding to the positioning hole, and the positioning piece can be inserted and adapted to the positioning hole.

5. The key switch structure of claim 2, wherein the elastic member comprises an elastic body, the abutting portion and the connecting portion are respectively connected to opposite ends of the elastic body, the elastic member further comprises an elastic connecting member, one end of the elastic connecting member is connected to the elastic body, and the other end is connected to the housing.

6. The key switch structure according to claim 5, wherein the elastic member is provided with two elastic connecting members, one ends of the two elastic connecting members are spaced apart and connected to opposite sides of the elastic main body, and the other ends of the two elastic connecting members are connected to the housing in an extending manner in opposite directions.

7. The key switch structure according to claim 5 or 6, wherein the elastic connection member is provided in an arc shape, or a part of the elastic connection member is provided in an arc shape, and the other part is provided in a linear shape.

8. The key switch structure according to claim 3, wherein the housing is provided with a mounting hole, the contact portion is provided with a fastening member, one end of the fastening member away from the contact portion is provided with a fastening portion, the fastening member is disposed through the mounting hole, and the fastening portion is capable of being fastened to the housing.

9. The key switch structure of claim 8, wherein a support stand is further provided on the housing in the mounting hole, and the key can abut on the support stand when moving along the first stroke.

10. The key switch structure of claim 1, wherein the housing comprises a first housing and a second housing connectable together, the key and the elastic member are both connected to the first housing, and the main board is connected to the second housing.