Key switch structure

Abstract

The embodiment of the utility model discloses a key switch structure, which comprises a shell, a key and an elastic piece, the shell is provided with a mainboard, and the mainboard is provided with a contact switch. The key is movably arranged on the shell; the elastic piece is connected to the shell, and the elastic piece is arranged on the moving path of the key; the key has a first stroke moving towards the elastic piece and a second stroke moving back to the elastic piece, and the key can drive the elastic piece to press the contact switch when moving along the first stroke. Through the arrangement of the movable key and the elastic piece, when the key is released after the touch switch is switched on by pressing the key, the elastic force of the elastic piece can smoothly enable the key to return to the original position, and the phenomenon that the key is stuck does not exist easily.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic products, in particular to a key switch structure. Background Art

[0002] Electronic products are usually equipped with a control board when in use. The control board is connected to a control circuit. Each control circuit may control the opening and closing of one or several functions in the electronic product. In the control circuit, a contact switch is generally used as a switch to control the on and off of the circuit. That is, pressing the contact switch can realize the on and off of the circuit. In actual application, a movable plastic button is often set on the shell of the electronic product, and the contact switch is driven on and off by pressing the plastic button.

[0003] However, the plastic buttons in the related art are generally either fixed on the contact switch to directly act on the contact switch, or the partial structure of the plastic button is fixed on the electronic product through welding technology, and the contact switch is directly pressed through the movable part of the plastic button. This setting method of the plastic button in the related art is not only troublesome to assemble, but also prone to the phenomenon of key jamming. Utility Model Content

[0004] Based on this, it is necessary to propose a key switch structure with a simple structure and not prone to key jamming in order to solve the above problems.

[0005] The present invention provides a key switch structure, comprising:

[0006] A housing is provided with a main board, wherein the main board has a contact switch;

[0007] A button, movably arranged on the housing;

[0008] and an elastic member, the elastic member being connected to the housing and arranged on a movable path of the key;

[0009] The key has a first stroke moving toward the elastic member and a second stroke moving away from the elastic member. When the key moves along the first stroke, it can drive the elastic member to press the contact switch.

[0010] In some embodiments, the elastic member includes an abutting portion and a connecting portion connected together, the abutting portion is arranged opposite to the contact switch, and the connecting portion can be connected to the button.

[0011] In some embodiments, the button includes a contact portion, an enclosure portion is disposed on the contact portion, the enclosure portion is surrounded by a connecting groove, and the connecting portion is plugged and adapted to fit in the connecting groove.

[0012] In some embodiments, a positioning hole is formed on the connecting portion, and a positioning piece is protruded from the contact portion at a position corresponding to the positioning hole, and the positioning piece can be plugged and adapted to the positioning hole.

[0013] In some embodiments, the elastic member includes an elastic body, the abutting portion and the connecting portion are respectively connected to two opposite ends of the elastic body, and the elastic member also includes an elastic connecting member, one end of which is connected to the elastic body, and the other end is connected to the shell.

[0014] In some embodiments, the elastic member is provided with two elastic connecting members, one ends of the two elastic connecting members are spaced apart and respectively connected to opposite sides of the elastic body, and the other ends of the two elastic connecting members extend in opposite directions to be connected to the outer shell.

[0015] In some embodiments, the elastic connector is configured to be arc-shaped, or a portion of the structure of the elastic connector is configured to be arc-shaped and another portion of the structure is configured to be straight-line-shaped.

[0016] In some embodiments, a mounting hole is provided on the shell, a buckle is provided on the contact portion, a buckle portion is provided at one end of the buckle away from the contact portion, the buckle passes through the mounting hole, and the buckle portion can be buckled on the shell.

[0017] In some embodiments, the housing is further provided with a support platform located in the mounting hole, and the key can abut against the support platform when moving along the first stroke.

[0018] In some embodiments, the housing includes a first shell and a second shell that can be connected together, the button and the elastic member are both connected to the first shell, and the mainboard is connected to the second shell.

[0019] The following beneficial effects are achieved by using the embodiments of the present invention:

[0020] According to the key switch structure in the above embodiment, by setting a movable key and an elastic member, in the process of applying an external force on the key to drive the key to move toward the elastic member, the key can abut against the elastic member to force the elastic member to deform, and the deformed elastic member can abut against the contact switch to press the contact switch to connect the circuit. When the external force is removed, the elastic member recovers and detaches from the contact switch under the action of the elastic force, thereby putting the contact switch in an off state and disconnecting the circuit. Therefore, by setting a movable key and an elastic member, the deformation of the elastic member can be used to connect the contact switch, and the rebound force of the elastic member can be used to restore the key to its original position and disconnect the contact switch to connect and disconnect the circuit. This structure is simple, has a low manufacturing cost, and is relatively easy to assemble. Moreover, because the elastic action of the elastic member is used to rebound the key, when the key is released after pressing the key to connect the contact switch, the elastic force of the elastic member can smoothly restore the key to its original position, and the key is not easily stuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] in:

[0023] Figure 1 An exploded view of the key switch structure provided by the utility model is shown;

[0024] Figure 2 A cross-sectional view of a key switch structure provided by the utility model is shown;

[0025] Figure 3 A schematic structural diagram of a first housing and an elastic member installation structure provided according to the utility model is shown;

[0026] Figure 4 A structural schematic diagram of a key provided according to the utility model is shown.

[0027] Description of main component symbols:

[0028] 1. Shell; 11. First shell; 111. Support platform; 112. Mounting hole; 12. Second shell; 13. Main board; 131. Contact switch; 2. Button; 21. Contact portion; 22. Snap-fit ​​member; 221. Snap-fit ​​portion; 23. Enclosing portion; 231. Connecting groove; 232. Positioning member; 3. Elastic member; 31. Elastic body; 32. Abutting portion; 33. Connecting portion; 331. Positioning hole; 34. Elastic connecting member. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the accompanying drawings. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0032] The utility model provides a key 2 switch structure that can be used in electronic products. In one embodiment, please refer to Figure 1 and Figure 2 The switch structure of the button 2 includes a shell 1, a button 2 and an elastic member 3. The main structure of the shell 1 is used to provide an installation support environment for the button 2 and the elastic member 3. In addition, the shell 1 is also used to provide an installation support environment for the main board 13 in the electronic product. The main board 13 is arranged therein. The main board 13 has a contact switch 131. The contact switch 131 has two upper and lower strokes. When pressed, the circuit is connected. When released, the contact switch 131 returns to its original position and the circuit is closed. Alternatively, after the contact switch 131 is pressed and then released, the contact switch 131 is in a connected state. After the contact switch 131 is pressed again and then released again, the contact switch 131 is in a disconnected state.

[0033] The button 2 is movably arranged on the housing 1, and the elastic member 3 is connected to the housing 1, and the elastic member 3 is arranged on the movable path of the button 2. The elastic member 3 can be deformed under the action of external force, and can return to its original state when the external force is removed. That is, when an external force is applied to the button 2 to move, the button 2 can press against the elastic member 3, and continuing to drive the button 2 can force the elastic member 3 to deform. When the external force is removed, the elastic force of the elastic member 3 can drive the button 2 to move in the opposite direction.

[0034] The button 2 has a first stroke moving toward the elastic member 3 and a second stroke moving away from the elastic member 3. Figure 1 , the path from M to N in the figure is the path of the first stroke, and the path from N to M is the path of the second stroke. When the key 2 moves along the first stroke, it can drive the elastic member 3 to press the contact switch 131 to connect the circuit. When the key 2 moves along the second stroke, the elastic member 3 returns to its original state and disengages from the contact switch 131 to close the circuit.

[0035] By providing an active button 2 and an elastic member 3, when an external force is applied to the button 2 to drive the button 2 to move toward the elastic member 3, the button 2 can abut against the elastic member 3 to force the elastic member 3 to deform, and the deformed elastic member 3 can abut against the contact switch 131 to press the contact switch 131 to connect the circuit. When the external force is removed, the elastic member 3 recovers and detaches from the contact switch 131 under the action of the elastic force, thereby making the contact switch 131 in an off state and disconnecting the circuit. Therefore, by providing an active button 2 and an elastic member 3, the deformation of the elastic member 3 can be used to connect the contact switch 131, and the resilience of the elastic member 3 can be used to restore the button 2 to its original position and disconnect the contact switch 131 to connect and disconnect the circuit. This structure is simple, the manufacturing cost is low, and it is also relatively easy to assemble. Furthermore, because the elastic effect of the elastic member 3 is utilized to rebound the button 2, when the button 2 is released after the contact switch 131 is turned on by pressing the button 2, the elastic force of the elastic member 3 can smoothly restore the button 2 to its original position, and the button is not easily stuck.

[0036] In one embodiment, see Figures 1 to 4 The elastic member 3 includes an abutting portion 32 and a connecting portion 33 connected together, the abutting portion 32 is arranged opposite to the contact switch 131, and the connecting portion 33 can be connected to the key 2. By arranging the connecting portion 33 to be connected to the key 2, the key 2 and the elastic member 3 can be made more stable, and when the key 2 drives the elastic member 3 to deform, the abutting portion 32 can be abutted against the contact switch 131.

[0037] Specifically, the key 2 includes a contact portion 21, one end surface of the contact portion 21 is used to apply an external driving force, for example, by pressing the end surface with a finger, the key 2 can be moved along the first stroke. The other end surface of the contact portion 21 is convexly provided with an enclosure portion 23, and the enclosure portion 23 is formed to enclose a connecting groove 231. The shape and size of the connecting groove 231 are adapted to the shape and size of the connecting portion 33, so that the connecting portion 33 can be plugged and adapted in the connecting groove 231. When the connecting portion 33 is plugged and adapted in the connecting groove 231, the side wall of the connecting portion 33 is preferably in contact with the groove wall of the connecting groove 231.

[0038] It should be noted that the connection groove 231 can be formed by an enclosure portion 23 surrounding the end surface of the contact portion 21 to form a closed structure, or can be formed by a plurality of enclosure portions 23 with intervals to form a structure with a gap, which is not limited here.

[0039] In a specific embodiment, a positioning hole 331 is further provided on one end of the connecting portion 33 facing away from the abutting portion 32, and a positioning member 232 is protrudingly provided at the position of the contact portion 21 corresponding to the positioning hole 331, and the positioning member 232 can be inserted and adapted to the positioning hole 331. When the connecting portion 33 is inserted into the connecting groove 231, the positioning member 232 can be inserted into the positioning hole 331. Through the cooperation of the positioning hole 331 and the positioning member 232, when the connecting portion 33 is inserted into the connecting groove 231, it can be positioned in advance, and by providing the positioning hole 331 and the positioning member 232, the relative position between the contact portion 21 and the connecting portion 33 can be increased in stability, and the key 2 is not prone to shaking when the key 2 is pressed.

[0040] In one embodiment, see Figures 1 to 4 The elastic member 3 includes an elastic body 31, and abutment portions 32 and connection portions 33 are respectively connected to opposite ends of the elastic body 31. The elastic body 31 and the connection portions 33 and the abutment portions 32 can be connected together by gluing or welding, or the elastic body 31, the connection portions 33 and the abutment portions 32 can be integrally formed, which is not limited here.

[0041] The elastic member 3 further includes an elastic connector 34, which is made of an elastic material, such as an elastic plastic or a plastic material. One end of the elastic connector 34 is connected to the elastic body 31, and the other end is connected to the housing 1. The elastic connector 34 makes the connection structure of the elastic body 31, the connection part 33 and the abutment part 32 in a suspended state.

[0042] By providing an elastic connecting member 34 , the contact portion 21 and the housing 1 can be connected. Thus, when the button 2 is pressed to drive the contact portion 21 to move, the elastic connecting member 34 can be deformed, thereby providing a rebound force for the button 2 to return to its original position.

[0043] In a specific embodiment, the elastic member 3 may be provided with one elastic connector 34, or may be provided with a plurality of elastic connectors 34 spaced apart, which is not limited here. In this embodiment, the elastic member 3 is provided with two elastic connectors 34 spaced apart, one end of the two elastic connectors 34 is spaced apart and respectively connected to the opposite sides of the elastic body 31, and the other ends of the two elastic connectors 34 extend in opposite directions to be connected to the housing 1.

[0044] It should be noted that, in a preferred embodiment, two elastic connectors 34 are stacked relative to the center point of the contact portion 21. By providing two or more elastic connectors 34, multiple parts of the contact portion 21 can be connected to the housing 1 through the elastic connectors 34, which can not only ensure the rebound force, which is conducive to improving the hand feel when pressing the button 2, but also ensure that the periphery of the contact portion 21 can be subjected to the elastic force, ensuring that the force on the contact portion 21 is uniform, especially when multiple elastic connectors 34 are symmetrical about the center of the contact portion 21, when the button 2 presses the contact portion 21 to move toward the contact switch 131, the elastic force on the contact portion 21 is uniform, which can ensure that the contact portion 21 is not prone to tilt.

[0045] In addition, in a specific embodiment, in order to ensure the size of the elastic deformation as much as possible, the elastic connector 34 is preferably set to an arc shape, and the extension path of the elastic connector 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.

[0046] Alternatively, part of the structure of the elastic connector 34 is set to an arc shape, and the other part of the structure is a straight line shape. Specifically, the middle position of the elastic connector 34 is set to a straight line structure, and the two ends of the elastic connector 34 are set to an arc structure, and the arc bending directions of the two ends of the elastic connector 34 are opposite. The elastic connector 34 is connected to the contact part 21 and the housing 1 respectively through the arc structures at both ends.

[0047] It should be noted that, in one embodiment, a mounting hole 112 is opened on the shell 1, and the mounting hole 112 is a through hole. The mounting hole 112 can be connected to the shell 1, and the main board 13 and the contact switch 131 are both located inside the shell 1, and the through hole is arranged opposite to the contact switch 131.

[0048] The elastic member 3 is located in the mounting hole 112 and is connected to the hole wall of the mounting hole 112 via an elastic connecting member 34 .

[0049] The contact portion 21 is provided with a buckle 22, the buckle 22 and the enclosure portion 23 are arranged on the same side of the contact portion 21, the end of the buckle 22 extends away from the contact portion 21, and the buckle 221 is arranged at one end of the buckle 22 away from the contact portion 21, and the buckle 221 is arranged to protrude outward. The buckle 22 can be inserted into the mounting hole 112, and the buckle 221 can be buckled on the housing 1.

[0050] It should also be noted that the outer wall of the fastener 22 can fit on the inner wall of the mounting hole 112. It is preferred that a plurality of fasteners 22 are provided. In this embodiment, two fasteners 22 are provided, and the two fasteners 22 are symmetrically provided. By providing the fastener 22, when the elastic connector 34 is in a free state, the connecting portion 33 is inserted into the connecting groove 231, and the top of the connecting portion 33 abuts against the bottom of the connecting groove 231. At this time, the mouth portion just abuts against the housing 1, that is, when the fastener 221 abuts against the housing 1, it can prevent the key 2 from continuing to move along the second stroke, so as to prevent the key 2 from bouncing off the elastic member 3 when the elastic force of the elastic connector 34 is too large.

[0051] In addition, the outer wall of the contact portion 21 is also attached to the inner wall of the mounting hole 112, and the mounting hole 112 is opened along the direction of the first stroke or the second stroke. In this way, through the cooperation between the fastener 22 and the mounting hole 112, and through the cooperation between the contact portion 21 and the mounting hole 112, the movement path of the key 2 when pressed downward can be limited to ensure a stable hand feel, and it is not easy to feel shaking, thereby ensuring the experience of pressing the key 2.

[0052] It is worth mentioning that the housing 1 is also provided with a support platform 111 located in the mounting hole 112. The support platform 111 surrounds the inner wall of the mounting hole 112 and is convexly arranged on the inner wall of the mounting hole 112. The support platform 111 forms a stepped structure in the mounting hole 112. The outer wall of the fastener 22 is arranged to fit on the inner wall of the support platform 111. The outer dimensions of the contact portion 21 match the outer dimensions of the mounting hole 112, so that the contact portion 21 can abut against the support platform 111 when the key 2 moves along the first stroke.

[0053] By providing the support platform 111 , the distance that the button 2 moves along the first stroke can be limited, thereby ensuring that excessive pressing does not occur when the external force is too large.

[0054] In one embodiment, the housing 1 includes a first shell 11 and a second shell 12 that can be connected together, the mounting hole 112 passes through the first shell 11, and the button 2 and the elastic member 3 are both connected to the first shell 11, and the mainboard 13 is connected to the second shell 12.

[0055] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent application. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A key switch structure, characterized in that: include: A housing is provided with a main board, wherein the main board has a contact switch; A button, movably arranged on the housing; and an elastic member, the elastic member being connected to the housing and arranged on a 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. When the key moves along the first stroke, it can drive the elastic member to press the contact switch.

2. The key switch structure according to claim 1, characterized in that: The elastic member includes an abutting portion and a connecting portion connected together, the abutting portion is arranged opposite to the contact switch, and the connecting portion can be connected to the button.

3. The key switch structure according to claim 2, characterized in that: The button comprises a contact portion, an enclosing portion is arranged on the contact portion, the enclosing portion is enclosed to form a connecting groove, and the connecting portion is plugged and adapted to fit in the connecting groove.

4. The key switch structure according to claim 3, characterized in that: A positioning hole is formed on the connecting portion, and a positioning piece is protruded from the contact portion at a position corresponding to the positioning hole, and the positioning piece can be plugged and adapted to the positioning hole.

5. The key switch structure according to claim 2, characterized in that: The elastic member includes an elastic body, the abutting portion and the connecting portion are respectively connected to two opposite ends of the elastic body, and the elastic member also includes an elastic connecting member, one end of which is connected to the elastic body, and the other end is connected to the shell.

6. The key switch structure according to claim 5, characterized in that: 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 the two opposite sides of the elastic body, and the other ends of the two elastic connecting members extend in opposite directions to be connected to the shell.

7. The key switch structure according to claim 5 or 6, characterized in that: The elastic connecting member is configured to be in an arc shape, or a part of the structure of the elastic connecting member is configured to be in an arc shape, and another part of the structure is configured to be in a straight line shape.

8. The key switch structure according to claim 3, characterized in that: The shell is provided with a mounting hole, the contact portion is provided with a buckle, one end of the buckle away from the contact portion is provided with a buckle part, the buckle passes through the mounting hole, and the buckle part can be buckled on the shell.

9. The key switch structure according to claim 8, characterized in that: The housing is also provided with a support platform located in the mounting hole, and the key can abut against the support platform when moving along the first stroke.

10. The key switch structure according to claim 1, characterized in that: The housing comprises a first shell and a second shell which can be connected together, the button and the elastic member are both connected to the first shell, and the mainboard is connected to the second shell.

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