Membrane switch with single key replacement function

Abstract

The utility model discloses a membrane switch with a single button replacement function, which relates to the technical field of membrane switches and comprises a panel layer, a surface adhesive layer, an upper circuit layer, a laminated layer, a lower circuit layer and a back adhesive layer, the surface adhesive layer is arranged below the panel layer, the upper circuit layer is arranged below the surface adhesive layer, and the laminated layer is arranged below the upper circuit layer. According to the membrane switch with the single key replacement function, the metal springback pieces are pressed, the metal springback pieces drive the lower pressing plate to descend, the lower pressing plate presses the upper circuit layer downwards, and the upper circuit layer penetrates through the glue clamping layer to be in contact with the lower circuit layer, so that the electrifying effect is achieved, and when a certain metal springback piece is damaged and cannot be used, the metal springback pieces can be replaced by the metal springback pieces. And the mounting frame and the damaged metal spring-back sheet are taken down from the fixed frame by rotating the mounting frame, and a new mounting frame is rotationally mounted on the fixed frame, so that the new metal spring-back sheet is put into use again.

Description

Technical Field

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

[0002] Membrane switch is a commonly used electronic component, usually used to control the switch of circuit. It is made of thin film material, thin and flexible, and is often used in touch screens, keyboards and other devices.

[0003] Existing membrane switches conduct electricity mainly in two ways, one of which is to conduct electricity by pressing the printed upper and lower button circuits, and the other is to conduct electricity by pressing the metal buttons.

[0004] However, when metal buttons are used for pressing and conducting electricity, the usage frequencies of the buttons on the panel layer are not all the same. One or several buttons may be used too frequently, which may cause the buttons to be damaged easily and cannot be used any further. When the buttons cannot be used any further, the entire panel layer needs to be replaced, which has a high replacement cost. Utility Model Content

[0005] The utility model aims to provide a membrane switch with a single button replacement function to solve the problem in the background art that buttons with too high a frequency of use are easily damaged and cannot be used any more, and the entire panel layer needs to be replaced, which results in high replacement costs.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a membrane switch with a single button replacement function, comprising a panel layer, a surface adhesive layer, an upper circuit layer, an interlayer layer, a lower circuit layer and a back adhesive layer, a surface adhesive layer is provided below the panel layer, an upper circuit layer is provided below the surface adhesive layer, an interlayer layer is provided below the upper circuit layer, a lower circuit layer is provided below the interlayer layer, a back adhesive layer is provided below the lower circuit layer, the panel layer comprises a main layer board, a fixing frame, an external thread, an installation frame, an internal thread and a metal rebound sheet, a fixing frame is fixedly installed on the main layer board, an external thread is provided on the outside of the fixing frame, an installation frame is provided above the fixing frame, an internal thread is provided on the bottom of the installation frame, and a metal rebound sheet is provided inside the installation frame.

[0007] Preferably, a label slot is provided on the top of the metal resilient sheet, and an external label of the button is attached to the label slot.

[0008] Preferably, the panel layer further comprises a lower pressing plate and a rebound column. A lower pressing plate is provided at the bottom of the metal rebound sheet. The lower pressing plate is fixedly connected to the metal rebound sheet through a bracket, and rebound columns are provided on both sides of the lower pressing plate.

[0009] Preferably, the rebound column comprises a telescopic tube and an external spring, and the external spring is wound around an inner tube of the telescopic tube.

[0010] Preferably, the edge of the metal resilient sheet is inserted into the installation frame, and the metal resilient sheet is fixedly connected to the installation frame.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] The utility model discloses a membrane switch with a single button replacement function, which is threadedly connected between an internal thread inside a mounting frame and an external thread outside a fixed frame. After a metal springback sheet is damaged due to high-frequency use, only the damaged metal springback sheet and the mounting frame outside the metal springback sheet need to be replaced separately, and a button label is affixed to a label slot on the top of the new metal springback sheet, and the new sheet can be put into use again without affecting other metal springback sheet buttons, thereby saving the cost of replacing the entire panel layer. A springback column is installed at the bottom of the metal springback sheet to help the metal springback sheet to rebound, and at the same time, the upper circuit layer is pressed down by the lower pressing plate, thereby expanding the pressing area and making the upper circuit layer better in contact with the lower circuit layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a side view of the utility model as a whole;

[0014] Figure 2 It is a three-dimensional diagram of the panel layer of the utility model;

[0015] Figure 3 It is a cross-sectional view of the installation frame of the utility model.

[0016] In the figure: 1. Panel layer; 11. Main layer board; 12. Fixing frame; 13. External thread; 14. Installation frame; 15. Internal thread; 16. Metal rebound sheet; 17. Label slot; 18. Lower pressure plate; 19. Rebound column; 2. Surface adhesive layer; 3. Upper circuit layer; 4. Interlayer layer; 5. Lower circuit layer; 6. Back adhesive layer. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the implementation regulations described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-3A membrane switch with a single key replacement function comprises a panel layer 1, a surface adhesive layer 2, an upper circuit layer 3, an interlayer layer 4, a lower circuit layer 5 and a back adhesive layer 6. The surface adhesive layer 2 is provided below the panel layer 1, the upper circuit layer 3 is provided below the surface adhesive layer 2, the interlayer layer 4 is provided below the upper circuit layer 3, the lower circuit layer 5 is provided below the interlayer layer 4, and the lower circuit layer 5 is provided with a back adhesive layer 6. The panel layer 1 comprises a main layer board 11, a fixing frame 12, an external thread 13, an installation frame 14, an internal thread 15 and a metal rebound sheet 16. The fixing frame 12 is fixedly installed on the main layer board 11, the outer side of the fixing frame 12 is provided with an external thread 13, the upper part of the fixing frame 12 is provided with an installation frame 14, and the bottom of the installation frame 14 is provided with a back adhesive layer 6. An internal thread 15 is provided on the part, and the installation frame 14 is threadedly connected with the external thread 13 on the fixed frame 12 through the internal thread 15. A metal rebound sheet 16 is provided inside the installation frame 14. By pressing the metal rebound sheet 16, the metal rebound sheet 16 drives the lower pressure plate 18 to descend, and the lower pressure plate 18 presses down the upper circuit layer 3. The upper circuit layer 3 passes through the interlayer 4 and contacts the lower circuit layer 5 to achieve the effect of power supply. After the metal rebound sheet 16 is damaged due to high-frequency use, the installation frame 14 is rotated to remove the installation frame 14 and the damaged metal rebound sheet 16 from the fixed frame 12, and a new installation frame 14 is replaced and rotatably installed on the fixed frame 12, so that the new metal rebound sheet 16 is put into use again.

[0019] Furthermore, a label slot 17 is provided at the top of the metal rebound sheet 16, and the external label of the key is attached to the label slot 17. After the installation frame 14 and the metal rebound sheet 16 are replaced as a whole, the label of the key is attached to the label slot 17 at the top of the new metal rebound sheet 16 and put into use again.

[0020] Furthermore, the panel layer 1 also includes a lower pressing plate 18 and a rebound column 19. The lower pressing plate 18 is provided at the bottom of the metal rebound sheet 16. The lower pressing plate 18 is fixedly connected to the metal rebound sheet 16 through a bracket. The lower pressing plate 18 presses down on the upper circuit layer 3, thereby expanding the pressing area and making the upper circuit layer 3 better contact with the lower circuit layer 5. Rebound columns 19 are provided on both sides of the lower pressing plate 18.

[0021] Furthermore, the rebound column 19 includes a telescopic tube and an external spring. The external spring is wound on the inner tube of the telescopic tube. The outer tube of the telescopic tube is fixedly connected to the metal rebound sheet 16, and the inner tube is fixedly connected to the mounting frame 14. When the metal rebound sheet 16 is pressed down, the inner tube enters the outer tube, and the external spring is compressed. The external spring helps the metal rebound sheet 16 to reset when it rebounds.

[0022] Furthermore, the edge of the metal resilient sheet 16 is inserted into the installation frame 14 , and the metal resilient sheet 16 and the installation frame 14 are fixedly connected.

[0023] Working principle: The utility model is a membrane switch with a single button replacement function. When in use, by pressing the metal springback sheet 16, the metal springback sheet 16 drives the lower pressure plate 18 to descend, and the lower pressure plate 18 presses down the upper circuit layer 3. The upper circuit layer 3 passes through the interlayer 4 and contacts the lower circuit layer 5 to achieve the effect of power-on. When a metal springback sheet 16 is damaged and cannot be used, the installation frame 14 is rotated to remove the installation frame 14 and the damaged metal springback sheet 16 from the fixed frame 12, and a new installation frame 14 is replaced and rotatably installed on the fixed frame 12, so that the new metal springback sheet 16 can be put into use again.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A membrane switch with a single key replacement function, comprising a panel layer (1), a surface adhesive layer (2), an upper circuit layer (3), an interlayer (4), a lower circuit layer (5) and a back adhesive layer (6), wherein the surface adhesive layer (2) is provided below the panel layer (1), the upper circuit layer (3) is provided below the surface adhesive layer (2), the interlayer (4) is provided below the upper circuit layer (3), the lower circuit layer (5) is provided below the interlayer (4), and the lower circuit layer (5) is provided below the back adhesive layer (6), characterized in that: The panel layer (1) comprises a main layer plate (11), a fixing frame (12), an external thread (13), a mounting frame (14), an internal thread (15) and a metal springback sheet (16); the fixing frame (12) is fixedly mounted on the main layer plate (11); the outer side of the fixing frame (12) is provided with an external thread (13); the upper side of the fixing frame (12) is provided with a mounting frame (14); the bottom side of the mounting frame (14) is provided with an internal thread (15); and the interior of the mounting frame (14) is provided with a metal springback sheet (16).

2. A membrane switch with a single key replacement function according to claim 1, characterized in that: A label slot (17) is provided on the top of the metal resilient sheet (16), and an external label of the key is attached to the label slot (17).

3. The membrane switch with a single key replacement function according to claim 1, characterized in that: The panel layer (1) further comprises a lower pressing plate (18) and a rebound column (19); the lower pressing plate (18) is provided at the bottom of the metal rebound sheet (16); the lower pressing plate (18) is fixedly connected to the metal rebound sheet (16) via a bracket; and rebound columns (19) are provided on both sides of the lower pressing plate (18).

4. The membrane switch with a single key replacement function according to claim 3, characterized in that: The rebound column (19) comprises a telescopic tube and an external spring, wherein the external spring is wound around an inner tube of the telescopic tube.

5. The membrane switch with a single key replacement function according to claim 1, characterized in that: The edge of the metal resilient sheet (16) is inserted into the installation frame (14), and the metal resilient sheet (16) and the installation frame (14) are fixedly connected.

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