Touch switch capable of preventing contact from moving

Abstract

The utility model provides a touch switch preventing contact movement, which comprises a hollow shell and a button arranged above the shell, a conducting strip is arranged in the shell, at least one elastic sheet is arranged between the conducting strip and the button, the conducting strip is provided with a circular ring, the circular ring is provided with a contact, and the contact is arranged on the circular ring. The side part of the circular ring is provided with at least one extension pin which is inserted into the bottom wall of the shell, and the light touch switch can overcome the defect that the touch feeling is poor when the button is pressed due to the change of the stroke between the button and the contact in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of light touch switches, in particular to a light touch switch capable of preventing contact points from moving. Background Art

[0002] A touch switch, also known as a key switch or a sensitive switch, is an electronic switch that closes the switch function by applying pressure in the switch operation direction under the condition of satisfying the operating force, and the switch is disconnected when the pressure is removed. In the utility model patent with the publication number CN113241276B, a waterproof touch switch is disclosed, which includes a base and a button made of plastic, and the base has a contact and a spring. When the button is pressed down, the button squeezes the spring to deform it so as to form electricity. However, during use, the contact is easily deformed downward after being subjected to a long-term squeezing force, thereby causing a change in the stroke between the button and the contact, resulting in a poor touch when the button is pressed. Utility Model Content

[0003] Therefore, the technical problem to be solved by the utility model is to overcome the defect of the change in the stroke between the button and the contact in the prior art, which causes a poor touch feeling when the button is pressed, thereby providing a light touch switch that can prevent the contact from moving.

[0004] To this end, the utility model provides a touch switch for preventing contact point movement, comprising a shell with a hollow interior and a button arranged above the shell, a conductive sheet is arranged inside the shell, at least one spring sheet is arranged between the conductive sheet and the button, the conductive sheet has a circular ring, a contact point is arranged on the circular ring, and at least one extension foot inserted into the bottom wall of the shell is arranged on the side of the circular ring.

[0005] Further: the extension foot is arranged on the side of the ring and the extension foot is arranged to be inclined downward.

[0006] Furthermore: the button includes a pressing end and an extrusion end arranged below the pressing end and used for contacting the spring sheet, and the pressing end is made of rubber material.

[0007] Further: the shell includes a base and a cover plate arranged above the base, the cover plate is provided with an avoidance opening for the pressing end to pass through, the pressing end is provided with an extension ring that contacts the cover plate, and when the pressing end passes through the avoidance opening, the upper end surface of the extension ring can contact the lower end surface of the cover plate.

[0008] Further: the base is provided with an avoidance groove for avoiding the conductive sheet.

[0009] The technical solution of the utility model has the following advantages:

[0010] 1. A tactile switch for preventing contact movement provided by the present utility model, wherein the contact is arranged above the ring, and extension feet are arranged on the side surface of the ring and inserted into the interior of the housing. The extension feet are connected to the housing to form a position for positioning and fixing the ring, preventing the ring from warping or being embedded into the housing during welding, thereby changing the travel between the ring and the contact.

[0011] 2. A tactile switch for preventing contact movement provided by the present utility model, wherein the extension feet are arranged on the side of the ring and inserted into the interior of the housing to form a fulcrum. When the housing melts due to high temperature during welding, the extension feet are connected to the housing to form a support point. Thus, even when the housing melts, the position of the ring will not change, and the travel between the button and the contact will not change either. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0013] Figure 1 It is an exploded structural schematic diagram of the tactile switch;

[0014] Figure 2 It is another exploded structural schematic diagram of the tactile switch;

[0015] Figure 3 It is a structural schematic diagram of the conductive sheet.

[0016] DESCRIPTION OF THE REFERENCE NUMERALS:

[0017] 1. Housing; 11. Base; 12. Cover plate; 2. Button; 21. Pressing end; 22. Extrusion end; 3. Conductive sheet; 31. Ring; 32. Contact; 33. Extension foot; 4. Elastic sheet; 5. Avoidance opening; 51. Extension ring; 6. Avoidance groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following will clearly and completely describe the technical solutions of the present utility model in conjunction with the drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model.

[0019] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0020] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0021] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0022] Embodiment

[0023] This embodiment provides a tactile switch for preventing contact movement, including a hollow housing 1 and a button 2 arranged above the housing 1. A conductive sheet 3 is arranged inside the housing 1. At least one elastic sheet 4 is arranged between the conductive sheet 3 and the button 2. A ring 31 is provided on the conductive sheet 3, a contact 32 is arranged on the ring 31, and at least one extension leg 33 inserted into the bottom wall of the housing 1 is arranged on the side of the ring 31.

[0024] The above specific improvement is as follows: As Figures 1 - 3As shown in the figure, the tactile switch makes the elastic piece 4 contact the contact point 32 by pressing the button 2. When the elastic piece 4 contacts the contact point 32, the tactile switch is in the powered-on state. During the manufacturing process, the ring 31 and the housing 1 need to be welded together. However, since the ring 31 is made of a metal material and the housing 1 is made of a plastic material, their melting points are different. During the welding process, the plastic may deform due to high temperature, resulting in the ring 31 sinking into the plastic or tilting upward away from the plastic, thus causing the stroke between the button 2 and the contact point 32 to become larger or smaller, affecting the pressing feel. Compared with the prior art, the contact point 32 is arranged above the ring 31, and an extension foot 33 is arranged on the side of the ring 31 and inserted into the housing 1. The extension foot 33 is connected to the housing 1 to form a position for positioning and fixing the ring 31, preventing the ring 31 from tilting or being embedded in the housing 1 during welding, so as to prevent the stroke between the ring 31 and the contact point 32 from changing.

[0025] Based on the above embodiment: The extension foot 33 is arranged on the side of the ring 31 and the extension foot 33 is arranged to incline downward.

[0026] The above specific improvement is as follows: As Figure 3 shown in the figure, the extension foot 33 is arranged on the side of the ring 31 and inserted into the housing 1 to form a fulcrum. When the housing 1 melts due to high temperature during the welding process, the extension foot 33 and the housing 1 are connected together to form a support point, so that even when the housing 1 melts, the position of the ring 31 will not change, and thus the stroke between the button 2 and the contact point 32 will not change.

[0027] Based on the above embodiment: The button 2 includes a pressing end 21 and a pressing end 22 arranged below the pressing end 21 and used for contacting the elastic piece 4. The pressing end 21 is made of a rubber material.

[0028] The above specific improvement is as follows: As Figure 2 shown in the figure, the button 2 includes a pressing ring and a pressing end 22 arranged below the pressing end 21. The pressing end 21 can be made of plastic. To improve the service life of the tactile switch, the pressing end 22 can be made of an elastic material. When the button 2 is pressed, the pressing end 21 will press the elastic piece 4, and then through the deformation of the elastic piece 4, the bottom of the elastic piece 4 contacts the contact point 32 to form power-on. During the pressing process, due to the operator not paying attention to the pressing force, it is easy to cause the elastic piece 4 to lose the elastic deformation force during long-term strong pressing. However, through the buffering force of soft materials such as rubber and silica gel of the pressing end 21, the elastic deformation force of the elastic piece can be protected to a large extent, thereby improving the service life of the tactile switch.

[0029] On the basis of the above embodiments: The housing 1 includes a base 11 and a cover plate 12 disposed above the base 11. An avoidance opening 5 for the pressing end 21 to pass through is provided on the cover plate 12. An extension ring 51 in contact with the cover plate 12 is provided on the pressing end 21. After the pressing end 21 passes through the avoidance opening 5, the upper end surface of the extension ring 51 can abut against the lower end surface of the cover plate 12.

[0030] The above specific improvement is as follows: As Figure 1 and Figure 2 shown, during installation, the pressing end 21 needs to pass through the avoidance opening 5 so that the pressing end 21 is exposed outside for an external force to apply pressure. To fix the position of the button 2, a circumferential extension ring 51 is provided on the outer side surface of the pressing end 21. After installation, the extension ring 51 is located between the base 11 and the cover plate 12 and abuts against the lower end surface of the cover plate 12, thereby preventing the button 2 from detaching from the cover plate 12 and achieving the effect of positioning the button 2.

[0031] On the basis of the above embodiments: An avoidance groove 6 for avoiding the conductive sheet is provided on the base 11.

[0032] The above specific improvement is as follows: To effectively fix the position of the conductive sheet 3, an avoidance groove 6 is provided on the base 11. During installation, a part of the conductive sheet 3 is embedded in the avoidance groove 6, thereby quickly fixing the position of the conductive sheet 3.

[0033] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A touch switch for preventing contact point movement, characterized in that: The invention comprises a shell (1) with a hollow interior and a button (2) arranged above the shell (1); a conductive sheet (3) is arranged inside the shell (1); at least one spring sheet (4) is arranged between the conductive sheet (3) and the button (2); a circular ring (31) is provided on the conductive sheet (3); a contact point (32) is provided on the circular ring (31); and at least one extension foot (33) is provided on the side of the circular ring (31) and is inserted into the bottom wall of the shell (1).

2. A touch switch for preventing contact point movement according to claim 1, characterized in that: The extension foot (33) is arranged on the side of the ring (31) and the extension foot (33) is arranged obliquely downward.

3. A touch switch for preventing contact point movement according to claim 1 or 2, characterized in that: The button (2) comprises a pressing end (21) and an extrusion end (22) arranged below the pressing end (21) and used for contacting the spring sheet (4); the pressing end (21) is made of rubber material.

4. A touch switch for preventing contact point movement according to claim 3, characterized in that: The housing (1) comprises a base (11) and a cover plate (12) arranged above the base (11); the cover plate (12) is provided with a relief opening (5) for the pressing end (21) to pass through; the pressing end (21) is provided with an extension ring (51) in contact with the cover plate (12); when the pressing end (21) passes through the relief opening (5), the upper end surface of the extension ring (51) can contact the lower end surface of the cover plate (12).

5. A touch switch for preventing contact point movement according to claim 4, characterized in that: The base (11) is provided with an avoidance groove (6) for avoiding the conductive sheet.

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