Membrane switch with panel repairing function

Abstract

The utility model discloses a membrane switch with a panel repairing function, which comprises a panel layer, an upper circuit layer, an isolating layer and a lower circuit layer, the upper circuit layer is arranged below the panel layer, the isolating layer is arranged below the upper circuit layer, the lower circuit layer is arranged below the isolating layer, the membrane switch further comprises a key module, and the key module is embedded in the panel layer. According to the membrane switch with the panel repairing function, when the membrane key is pressed down, the built-in pressing plate synchronously presses down the annular air bag, the annular air bag deforms after being extruded, and after pressing is finished, air in the annular air bag helps the annular air bag to restore to the original shape and jacks up the built-in pressing plate and the membrane key, so that the internal pressing plate and the membrane key are pressed down; the built-in pressing plate and the film key are reset, air enters the annular air bag through the inflation pipe, the air in the annular air bag is kept sufficient, and then the film key can be always kept in a reset state after being pressed.

Description

Technical Field

[0001] The utility model relates to the technical field of membrane switches, in particular to a membrane switch with a panel repair function. Background Art

[0002] Membrane switches are electronic components commonly used to control circuit switches. They are made of thin film materials and are mostly used in devices such as touch screens and keyboards.

[0003] During the use of the membrane switch, the panel layer may sink or even fail to rebound due to long-term pressing. In the existing technology, a spring rebound method is used to help the buttons of the panel layer reset.

[0004] However, in actual use, although the panel layer button reset effect can be achieved by using the spring reset method, the spring will also be damaged due to fatigue caused by excessive button pressing, and the reset effect can no longer be achieved. Utility Model Content

[0005] The purpose of the present invention is to provide a membrane switch with a panel repair function to solve the problem that the spring reset method proposed in the above background technology may cause the spring to fatigue and be damaged due to excessive button pressing, and the reset effect can no longer be achieved.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a membrane switch with a panel repair function, comprising a panel layer, an upper circuit layer, an isolation layer, and a lower circuit layer, wherein the upper circuit layer is disposed below the panel layer, the isolation layer is disposed below the upper circuit layer, and the lower circuit layer is disposed below the isolation layer, and further comprising a key module, wherein the key module is embedded in the panel layer;

[0007] The key module includes a module base plate, a membrane key, a built-in pressure plate, a downward pressure rod and an annular airbag. A membrane key is provided on the top of the module base plate, and the membrane key is fixedly connected to the module base plate. The inner side of the membrane key is fixedly connected to the built-in pressure plate, the bottom end of the built-in pressure plate is fixedly connected to the downward pressure rod, and an annular airbag is provided below the built-in pressure plate.

[0008] Preferably, the button module further includes an inflation tube and an inflation terminal, one end of the inflation tube is interconnected with the interior of the annular airbag, and the other end of the inflation tube is interconnected with the inflation terminal.

[0009] Preferably, a guide frame is provided on the outer side of the pressing rod, and the guide frame is fixedly connected to the module bottom plate. A guide hole is opened inside the guide frame, and the inner diameter of the guide hole is the same as the diameter of the pressing rod.

[0010] Preferably, a sealing cap is provided on the top of the inflation end head, and the sealing cap is threadedly connected to the inflation end head.

[0011] Preferably, a back adhesive layer is provided below the lower circuit layer, and the back adhesive layer is fixedly connected to the lower circuit layer.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] The utility model relates to a membrane switch with a panel repair function. By pressing the membrane button, the pressing rod is driven to descend in the guide hole, thereby preventing the pressing rod from deviating during the pressing process and accurately helping the upper circuit layer and the lower circuit layer to contact each other.

[0014] When the down-press rod is pressed down, the built-in pressure plate applies pressure to the annular airbag. When the button is pressed down, the annular airbag helps the membrane button to reset. When the rebound force of the annular airbag deteriorates, the annular airbag can be repeatedly inflated through the inflation end. Unlike the spring which will be damaged by fatigue, the annular airbag can be reused to keep sufficient gas inside to help the membrane button reset. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a side view of the entire utility model;

[0016] Figure 2 This is a cross-sectional view of the key module of the utility model;

[0017] Figure 3 This is a top view of the key module of the utility model.

[0018] In the figure: 1. Panel layer; 2. Key module; 21. Module base plate; 22. Membrane key; 23. Built-in pressure plate; 24. Lower pressure rod; 25. Annular airbag; 26. Inflatable tube; 27. Inflatable terminal; 28. Guide frame; 29. ​​Guide hole; 3. Upper circuit layer; 4. Isolation layer; 5. Lower circuit layer; 6. Adhesive layer. 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 implementation regulations 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] See also Figure 1-3A membrane switch with panel repair function includes a panel layer 1, an upper circuit layer 3, an isolation layer 4 and a lower circuit layer 5. The upper circuit layer 3 is provided below the panel layer 1, the isolation layer 4 is provided below the upper circuit layer 3, and the lower circuit layer 5 is provided below the isolation layer 4. The switch also includes a key module 2, which is embedded in the panel layer 1. The key module 2 includes a module bottom plate 21, a membrane key 22, a built-in pressure plate 23, a lower pressure rod 24 and an annular airbag 25. The top of the module bottom plate 21 is provided with a membrane key 22, and the membrane key 22 is fixed to the module bottom plate 21. The inner side of the membrane button 22 is fixedly connected with a built-in pressure plate 23, and the bottom end of the built-in pressure plate 23 is fixedly connected with a downward pressing rod 24. An annular airbag 25 is provided under the built-in pressure plate 23. When the membrane button 22 is pressed down, the built-in pressure plate 23 simultaneously presses down the annular airbag 25. The annular airbag 25 is deformed after being squeezed, and after the pressing is completed, the gas inside the annular airbag 25 helps the annular airbag 25 to restore its original shape, and push the built-in pressure plate 23 and the membrane button 22 upward, so that the built-in pressure plate 23 and the membrane button 22 are also reset.

[0021] Furthermore, the button module 2 also includes an inflation tube 26 and an inflation terminal 27. One end of the inflation tube 26 is interconnected with the interior of the annular airbag 25, and the other end of the inflation tube 26 is interconnected with the inflation terminal 27. The annular airbag 25 is inflated through the inflation terminal 27. The gas enters the annular airbag 25 through the inflation tube 26, which can keep the gas inside the annular airbag 25 sufficient.

[0022] Furthermore, a guide frame 28 is provided on the outer side of the lower pressure rod 24, and the guide frame 28 is fixedly connected to the module base plate 21. A guide hole 29 is opened inside the guide frame 28. The inner diameter of the guide hole 29 is the same as the diameter of the lower pressure rod 24. The lower pressure rod 24 can press the upper circuit layer 3 downward along the guide hole 29 to make it contact with the lower circuit layer 5.

[0023] Furthermore, a sealing cap is provided on the top of the inflation end head 27 , and the sealing cap is threadedly connected to the inflation end head 27 , so that the sealing cap can seal the inflation end head 27 .

[0024] Furthermore, a back adhesive layer 6 is provided below the lower circuit layer 5 , and the back adhesive layer 6 is fixedly connected to the lower circuit layer 5 , and the membrane switch is pasted through the back adhesive layer 6 for use.

[0025] Working principle: The utility model is a membrane switch with panel repair function. When in use, the membrane button 22 is pressed down. When the membrane button 22 is pressed down, the pressing rod 24 is pressed down. The pressing rod 24 presses down along the guide hole 29 to press the upper circuit layer 3 to make it contact with the lower circuit layer 5 to achieve the effect of power supply. When the membrane button 22 is pressed down, the built-in pressing plate 23 presses down the annular airbag 25 synchronously. The annular airbag 25 is deformed after being squeezed, and after the pressing is completed, the annular airbag is The gas inside 25 helps the annular airbag 25 to return to its original state, and pushes the built-in pressure plate 23 and the membrane button 22 upward, so that the built-in pressure plate 23 and the membrane button 22 are also reset. When the gas inside the annular airbag 25 becomes less and is not enough to restore the annular airbag 25, the annular airbag 25 is inflated through the inflation end 27, and the gas enters the annular airbag 25 through the inflation tube 26, keeping the gas inside the annular airbag 25 sufficient, so that the membrane button 22 can always remain in the restored state after the pressing is completed.

[0026] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A membrane switch with a panel repair function, comprising a panel layer (1), an upper circuit layer (3), an isolation layer (4) and a lower circuit layer (5), wherein the upper circuit layer (3) is provided below the panel layer (1), the isolation layer (4) is provided below the upper circuit layer (3), and the lower circuit layer (5) is provided below the isolation layer (4), characterized in that: It also includes a key module (2), wherein the key module (2) is embedded in the panel layer (1); The key module (2) comprises a module base plate (21), a membrane key (22), a built-in pressure plate (23), a downward pressure rod (24) and an annular airbag (25); a membrane key (22) is provided on the top of the module base plate (21), and the membrane key (22) and the module base plate (21) are fixedly connected; the inner side of the membrane key (22) is fixedly connected to the built-in pressure plate (23); the bottom end of the built-in pressure plate (23) is fixedly connected to the downward pressure rod (24); and an annular airbag (25) is provided below the built-in pressure plate (23).

2. The membrane switch with panel repair function according to claim 1, characterized in that: The key module (2) further comprises an inflation tube (26) and an inflation terminal (27); one end of the inflation tube (26) is in communication with the interior of the annular airbag (25); and the other end of the inflation tube (26) is in communication with the inflation terminal (27).

3. The membrane switch with panel repair function according to claim 1, characterized in that: A guide frame (28) is provided on the outside of the push rod (24), and the guide frame (28) is fixedly connected to the module bottom plate (21). A guide hole (29) is provided inside the guide frame (28), and the inner diameter of the guide hole (29) is the same as the diameter of the push rod (24).

4. The membrane switch with panel repair function according to claim 2, characterized in that: A sealing cap is provided on the top of the inflation end head (27), and the sealing cap is threadedly connected to the inflation end head (27).

5. The membrane switch with panel repair function according to claim 1, characterized in that: A back adhesive layer (6) is provided below the lower circuit layer (5), and the back adhesive layer (6) is fixedly connected to the lower circuit layer (5).

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