Anti-falling membrane switch

Abstract

The utility model discloses a kind of anti-falling membrane switches, comprising: backplate, rectangularly setting, and backside is provided with back glue and is clamped and fixed on the clamping hook of instrument;Switch diaphragm, paste setting on the surface of the backplate;Press frame, annularly fixed on the periphery of backplate, and the periphery of the switch diaphragm is pressed tightly.The utility model is fixed on the backplate of instrument by setting, and the press frame that the periphery of switch diaphragm is pressed tightly is set on backplate, the double fixing of switch diaphragm is realized, even if glue oxidation also cannot appear separation phenomenon, increase the service life and use stability of switch diaphragm.

Description

Technical Field

[0001] This utility model relates to the field of membrane switches, and in particular to a membrane switch that prevents detachment. Background Technology

[0002] A membrane switch is a type of electronic switch that opens or closes a circuit by applying pressure between different contact layers. When a user presses a specific area of ​​the membrane switch, this causes the upper and lower conductive layers to make contact at that point, thus completing the circuit.

[0003] Traditional membrane switches are usually directly glued to the device during use. However, as the usage time increases, the adhesive at the bonding point will gradually oxidize, and it is easy for it to loosen or fall off, affecting the normal use of the membrane switch, which needs to be improved. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a membrane switch that prevents detachment.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a membrane switch that prevents detachment, comprising:

[0006] The back panel is rectangular in shape and has adhesive backing and hooks for attaching and fixing it to the instrument.

[0007] A switch diaphragm is adhered to the surface of the back plate;

[0008] The pressure frame is fixed in a ring around the perimeter of the back plate and presses against the perimeter of the switch diaphragm.

[0009] In a preferred embodiment, the present invention can be further configured such that: the pressure frame is provided with locking hooks on all four sides, and the back plate is provided with locking holes for the locking hooks to be inserted.

[0010] In a preferred embodiment, the present invention can be further configured such that: positioning rods are provided around the pressure frame, positioning holes for the positioning rods to be inserted are provided on the back plate, and through holes for the positioning rods to pass through are provided on the switch diaphragm.

[0011] In a preferred embodiment, the present invention can be further configured such that the back plate is provided with a positioning groove for embedding the switch diaphragm.

[0012] In a preferred embodiment, the present invention can be further configured such that: a dovetail block is provided on the back side of the switch diaphragm, and a groove for the dovetail block to be inserted into is provided on the back plate, and a dovetail slot is provided connecting the lower end of the groove for the dovetail block to be inserted into.

[0013] In a preferred embodiment, the present invention can be further configured such that a glow-in-the-dark ring is embedded on the surface of the pressure frame.

[0014] In a preferred embodiment, the present invention can be further configured such that both sides of the pressure frame are provided with buckle grooves.

[0015] In summary, this utility model has the following beneficial effects:

[0016] 1. By setting a backplate fixed to the instrument and setting a pressure frame on the backplate to press the switch diaphragm around, the switch diaphragm is double fixed, and even if the glue oxidizes, it will not detach, thus increasing the service life and stability of the switch diaphragm.

[0017] 2. By setting a positioning rod that passes through the switch diaphragm, the switch diaphragm is fixed between the back plate and the pressure frame. The switch diaphragm is installed by snap-fit, so as to achieve a stable fixation of the three and prevent the switch diaphragm from falling off after long-term use. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of an embodiment;

[0019] Figure 2 This is a schematic diagram of the forward connection relationship in an embodiment;

[0020] Figure 3 This is a schematic diagram of the back-side connection relationship in an embodiment.

[0021] Reference numerals: 1. Back plate; 11. Adhesive backing; 12. Hook; 13. Positioning groove; 14. Lock hole; 15. Positioning hole; 16. Groove; 17. Dovetail groove; 2. Switch diaphragm; 21. Through hole; 22. Dovetail block; 3. Pressure frame; 31. Luminous ring; 32. Lock hook; 33. Buckle groove; 34. Positioning rod. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings.

[0023] like Figure 1 , Figure 2 , Figure 3 As shown, a membrane switch designed to prevent detachment includes a back plate 1, a switch diaphragm 2, and a pressure frame 3.

[0024] like Figure 2 , Figure 3 As shown, the back plate 1 is rectangular in shape, and has an adhesive backing 11 and a hook 12 for fastening to the instrument, achieving double fixation of the back plate 1. The surface of the back plate 1 is provided with a positioning groove 13, and the switch diaphragm 2 is embedded in the positioning groove 13 and adhered to the surface of the back plate 1.

[0025] like Figure 2 , Figure 3 As shown, the pressure frame 3 is fixed in a ring around the back plate 1, and a luminous ring 31 is embedded on the surface of the pressure frame 3 to provide location marking at night.

[0026] like Figure 2 , Figure 3 As shown, the pressure frame 3 presses against the circumference of the switch diaphragm 2. Locking hooks 32 are provided around the circumference of the pressure frame 3, and locking holes 14 are provided on the back plate 1 for the locking hooks 32 to be inserted. Clip grooves 33 are provided on both sides of the pressure frame 3, making it easy to pry up the pressure frame 3 with tools to facilitate the maintenance and replacement of the switch diaphragm 2.

[0027] Therefore, when assembling the membrane switch, the switch diaphragm 2 is embedded in the positioning groove 13 on the back plate 1, and the switch diaphragm 2 is pressed to bond and fix it to the back plate 1. Then, the pressure frame 3 is fastened around the back plate 1, and the locking hook 32 is inserted into the locking hole 14 to fix the pressure frame 3. At this time, the pressure frame 3 presses tightly around the switch diaphragm 2, achieving a double fixation of bonding and pressing, so that even if the glue oxidizes, there will be no detachment, increasing the service life and stability of the switch diaphragm 2.

[0028] like Figure 2 , Figure 3 As shown, positioning rods 34 are provided around the pressure frame 3, positioning holes 15 are provided on the back plate 1 for the positioning rods 34 to be inserted, and through holes 21 are provided on the switch diaphragm 2 for the positioning rods 34 to pass through.

[0029] Therefore, when the switch diaphragm 2 is installed, the through hole 21 on the switch diaphragm 2 automatically aligns with the positioning hole 15. During the installation of the pressure frame 3, the positioning rod 34 passes through the through hole 21 and is inserted into the positioning hole 15 to fix the position of the switch diaphragm 2 around its perimeter, increasing the tightness of the switch diaphragm 2 and preventing it from falling off.

[0030] like Figure 2 , Figure 3 As shown, a dovetail block 22 is provided on the back side of the switch diaphragm 2, and a groove 16 for the dovetail block 22 to be inserted and a dovetail groove 17 connecting the lower end of the groove 16 and for the dovetail block 22 to be inserted are provided on the back plate 1.

[0031] Therefore, when installing the switch diaphragm 2, first control the switch diaphragm 2 to bend so that the dovetail block 22 is embedded in the groove 16, then control the switch diaphragm 2 to slide down so that the dovetail block 22 is embedded in the dovetail groove 17, and then press the switch diaphragm 2 to achieve the bonding and fixing of the switch diaphragm 2, and further achieve the locking of the switch diaphragm 2 to prevent the switch diaphragm 2 from falling off after long-term use.

[0032] The specific embodiments are merely explanations of this utility model and are not intended to limit it. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this utility model.

Claims

1. A membrane switch designed to prevent detachment, characterized in that: include: The back panel (1) is rectangular in shape and has adhesive backing (11) and hooks (12) for snapping and fixing to the instrument. A switching diaphragm (2) is adhered to the surface of the back plate (1); The pressure frame (3) is fixed in a ring around the back plate (1) and presses against the circumference of the switch diaphragm (2).

2. The anti-detachment membrane switch according to claim 1, characterized in that: The pressure frame (3) is provided with locking hooks (32) on all four sides, and the back plate (1) is provided with locking holes (14) for the locking hooks (32) to be inserted.

3. The anti-detachment membrane switch according to claim 1, characterized in that: The pressure frame (3) is provided with positioning rods (34) on all four sides, the back plate (1) is provided with positioning holes (15) for the positioning rods (34) to be inserted, and the switch diaphragm (2) is provided with through holes (21) for the positioning rods (34) to pass through.

4. The anti-detachment membrane switch according to claim 3, characterized in that: The back plate (1) is provided with a positioning groove (13) for the switch diaphragm (2) to be embedded.

5. A membrane switch for preventing detachment according to claim 4, characterized in that: The back side of the switch diaphragm (2) is provided with a dovetail block (22), and the back plate (1) is provided with a groove (16) for the dovetail block (22) to be inserted and a dovetail groove (17) connected to the lower end of the groove (16) for the dovetail block (22) to be inserted.

6. The anti-detachment membrane switch according to claim 1, characterized in that: A glow-in-the-dark ring (31) is embedded on the surface of the pressure frame (3).

7. A membrane switch for preventing detachment according to claim 1, characterized in that: Both sides of the pressure frame (3) are provided with buckle grooves (33).

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