Touch switch

Abstract

The utility model discloses a touch switch, and belongs to the technical field of electric switches. The touch switch solves the problems that the button is poor in pressing hand feeling and the assembly is tedious due to the fact that a dustproof film needs to be additionally arranged. The button, the cover plate and the base are assembled together, and the circular reed is arranged in an inner cavity of the base, and the center of the circular reed hunches upwards. The button is of a silica gel integrally-formed structure and comprises a cylindrical button body, an annular connecting part formed by outwards extending from the middle of the button body in the radial direction and an annular mounting part formed by outwards extending from the bottom of the outer periphery of the annular connecting part. The upper end of the button body penetrates through an opening in the cover plate and extends out of the cover plate, and the annular installation part is pressed and limited between the cover plate and the base.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric switches, and in particular relates to a light touch switch. Background Art

[0002] Tactile switches, also known as pushbutton switches or sensitive switches, operate by applying pressure in the desired direction to close the switch. Removing the pressure disconnects the switch. Tactile switches offer advantages such as low contact resistance, precise operating force tolerance, and a variety of specifications, making them widely used in electronic devices and household appliances.

[0003] The buttons in existing tactile switches are mostly made of plastic, which has a poor pressing feel. In addition, in order to improve the dustproof effect of the tactile switch, a dustproof film is set inside the switch to block dust. However, the dustproof film is thin and small, making the switch assembly inconvenient. Utility Model Content

[0004] The utility model provides a light touch switch, which solves the problems of poor button pressing feel and complicated assembly caused by the need for a separate dustproof film.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A tactile switch is provided, comprising a button, a cover plate, and a base assembled together, and a circular spring leaf with an upwardly arched center disposed within an inner cavity of the base; the button is a one-piece silicone molded structure, comprising a cylindrical button body, an annular connecting portion extending radially outward from the middle portion of the button body, and an annular mounting portion extending outward from the bottom of the outer peripheral edge of the annular connecting portion; the upper end of the button body extends outside the cover plate through an opening in the cover plate, and the annular mounting portion is pressed and limited between the cover plate and the base.

[0007] In some embodiments, a receiving groove is formed at the lower end surface of the cover plate, and the annular mounting portion is attached to the receiving groove.

[0008] In some embodiments, in the receiving groove, a circle of edges formed around the opening of the cover plate is an arc-shaped edge.

[0009] In some embodiments, fixing columns for fixing the periphery of the annular mounting portion are provided in the accommodating groove, and corresponding fixing holes are provided around the periphery of the annular mounting portion.

[0010] In some embodiments, a contact surface is provided on the top surface of the base and is in contact with the bottom surface of the annular mounting portion. An annular convex ridge is provided on the contact surface and is arranged around the inner cavity of the base.

[0011] In some embodiments, a retaining edge is formed on the outer periphery of the cover plate and extends vertically downward; the retaining edge surrounds the outer side of the annular mounting portion and the upper end of the base.

[0012] In some embodiments, a central contact point and a side contact point are respectively provided at the center and the edge of the bottom of the base inner cavity, and the positions of the central contact point and the side contact point respectively correspond to the center and the periphery of the circular spring.

[0013] In some embodiments, the tactile switch further includes a first card and a second card arranged at the bottom of the base, the upper ends of the first card and the second card extend into the base and are electrically connected to the center contact point and the side contact point respectively, and the lower ends of the first card and the second card extend outside the base to form pins.

[0014] The utility model has the positive effects that the button of the touch switch is made of silicone material, the button feels good when pressed, and the annular connecting part and the annular mounting part integrally arranged on the outer periphery of the button body can replace the existing dustproof film to block dust, but there is no need to set up a dustproof film as a component separately. The structure is simple and the assembly is convenient, thereby effectively ensuring the service life and safety of the touch switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the structure of the touch switch in the present utility model;

[0017] Figure 2 This is an exploded schematic diagram of the touch switch in the present utility model;

[0018] Figure 3 The figure is a structural diagram of the cover plate and button of the touch switch in the present invention. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral whole; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0021] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0022] The present invention provides a touch switch 100. Figure 1 and Figure 2 As shown, the touch switch 100 includes a button 1, a cover plate 2 and a base 3 assembled together, and a circular reed 4 with an upward arch at the center arranged in the inner cavity of the base 3. The circular reed 4 is made of elastic metal.

[0023] Among them, such as Figure 2 As shown, the button 1 is a one-piece silicone molded structure, comprising a cylindrical button body 11, an annular connecting portion 12 extending radially outward from the middle portion of the button body 11, and an annular mounting portion 13 extending outward from the bottom of the outer periphery of the annular connecting portion 12. The upper end of the button body 11 extends outward from the cover plate 2 through an opening in the cover plate 2, and the annular mounting portion 13 is positioned between the cover plate 2 and the base 3. The button of this tactile switch is made of silicone material, providing a good pressing feel. Furthermore, the annular connecting portion 12 and annular mounting portion 13 integrally formed on the periphery of the button body 11 can replace the existing dustproof film to block dust, but without the need for a separate dustproof film, resulting in a simple structure and easy assembly. The button 1 is a one-piece silicone molded structure, simple in structure, and easy to process.

[0024] like Figure 3As shown, in order to further enhance the protective effect, a receiving groove 21 is formed at the lower end surface of the cover plate 2, and the annular mounting portion 13 is attached to the receiving groove 21, so that the annular mounting portion 13 can effectively prevent water or dust from penetrating from the opening of the cover plate 2. Furthermore, a circle of edges with an arc-shaped edge is formed around the opening of the cover plate 2 in the receiving groove 21, and the surface of the arc-shaped edge is an arc-shaped surface, which will not cause damage to the button 1. When the cover plate 2 and the base 3 are buckled together, the pressure ring 22 can form an indentation on the annular mounting portion 13, further enhancing the dustproof effect. Furthermore, a fixing column 23 for fixing the annular mounting portion 13 is provided in the receiving groove 21, and corresponding fixing holes 131 are provided around the annular mounting portion 13, so that the annular mounting portion 13 can be strengthened and fixed by plugging and fitting the fixing column 23 and the fixing hole 131.

[0025] In some embodiments, as Figure 2 As shown, a contact plane 31 is provided on the top surface of the base 3 and is in contact with the bottom surface of the annular mounting portion 13. The contact plane is provided with an annular ridge arranged around the inner cavity of the base 3. When the annular mounting portion 13 is pressed, its bottom surface is tightly against the contact plane 31, and the corresponding part forms an engagement with the annular ridge, thereby strengthening the fixation and sealing effect of the part.

[0026] In some embodiments, as Figure 1 and Figure 2 As shown, a retaining edge 24 is formed on the outer peripheral edge of the cover plate 2 and extends vertically downward; the retaining edge 24 surrounds the outer side of the upper end of the annular mounting portion 13 and the base 3, which can effectively prevent dust from invading through the gap at the overlapping edge of the cover plate 2 and the annular mounting portion 13.

[0027] In some embodiments, as Figure 2 As shown, a circular spring 4 with an upwardly arched center is disposed within the inner cavity of the base 3. A central contact point 32 and a side contact point 33 are provided at the center and edge of the bottom of the inner cavity, respectively. The positions of the central contact point 32 and the side contact points 33 correspond to the center and periphery of the circular spring 4, respectively. Under normal conditions, the circular spring 4 contacts the side contact points 33 and does not contact the central contact point 32. This allows the circular spring 4 to deform downward when the button 1 applies downward pressure to the circular spring 4, causing the center and periphery of the circular spring to contact the central contact point 32 and the side contact points 33 simultaneously, respectively, completing the circuit through the circular spring 4. When the external force applied to the button 1 is removed, the circular spring 4 elastically returns to its original position and separates from the central contact point 32, thereby achieving the on / off function of the switch.

[0028] In some embodiments, as Figure 1and Figure 2 As shown, the tactile switch 100 further includes a first clamping member 34 and a second clamping member 35 provided at the bottom of the base 3. The upper ends of the first clamping member 34 and the second clamping member 35 extend into the base 3 and are electrically connected to the center contact point 32 and the side contact point 33 respectively. The lower ends of the first clamping member 34 and the second clamping member 35 extend outside the base 3 to form pins, which are used to connect to an external circuit.

[0029] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A touch switch, characterized in that: It includes a button, a cover plate and a base assembled together, and a circular spring leaf with the center arched upward and arranged in the inner cavity of the base; the button is a silicone one-piece molding structure, which includes a cylindrical button body, an annular connecting portion formed by the middle part of the button body extending radially outward, and an annular mounting portion formed by the bottom of the outer peripheral edge of the annular connecting portion extending outward; the upper end of the button body extends out of the cover plate through the opening on the cover plate, and the annular mounting portion is pressed and limited between the cover plate and the base.

2. The touch switch according to claim 1, characterized in that: A receiving groove is formed at the lower end surface of the cover plate, and the annular mounting portion is attached to the receiving groove.

3. The touch switch according to claim 2, characterized in that: A circle of edges is formed in the receiving groove around the opening of the cover plate and is an arc-shaped edge.

4. The touch switch according to claim 2, characterized in that: The containing groove is provided with fixing columns for fixing the periphery of the annular mounting portion, and the periphery of the annular mounting portion is provided with corresponding fixing holes.

5. The touch switch according to claim 2, characterized in that: A contact plane that contacts the bottom surface of the annular mounting portion is arranged on the top surface of the base, and an annular convex ridge that surrounds the inner cavity of the base is arranged on the contact plane.

6. The touch switch according to claim 2, characterized in that: A stop edge is formed on the outer peripheral edge of the cover plate and extends vertically downward; the stop edge surrounds the outer side of the annular mounting portion and the upper end of the base.

7. The touch switch according to any one of claims 1 to 6, characterized in that: A central contact point and a side contact point are respectively provided at the center and the edge of the bottom of the inner cavity of the base, and the positions of the central contact point and the side contact point correspond to the center and the periphery of the circular spring leaf respectively.

8. The touch switch according to claim 7, characterized in that: The touch switch also includes a first card and a second card arranged at the bottom of the base, the upper ends of the first card and the second card extend into the base and are electrically connected to the center contact point and the side contact point respectively, and the lower ends of the first card and the second card extend out of the base to form pins.

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