Anti-dislocation electronic membrane switch

Abstract

The utility model relates to the technical field of membrane switches, in particular to an anti-dislocation electronic membrane switch, which comprises a switch seat and a membrane layer, a pressing block connected with a trigger sheet is adhered to the inner side of the membrane layer, and a circuit board for turning on and turning off the switch is fixed on the inner side of the switch seat through screws. A supporting rod connected with the fixing sleeve is welded to one side of the pressing block, a connecting rod enabling the fixing sleeve to slide is welded in the switch base, a sliding groove is formed in the switch base, a sliding block connected with the supporting rod is slidably connected to the inner wall of the sliding groove, and the outer side of the connecting rod is sleeved with a spring for buffering. A rubber block for buffering is fixed on one side of the switch base through a screw; through the arrangement of the fixing sleeve, the supporting rod, the connecting rod, the sliding groove, the sliding block, the spring and the rubber block, the problems that when an existing electronic membrane switch is used, dislocation of a trigger piece of the membrane switch and a circuit board is avoided, and meanwhile the circuit board of the membrane switch is inconvenient to protect are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of membrane switches, in particular to an electronic membrane switch that prevents misalignment. Background Art

[0002] Membrane switch is an operating system that integrates key functions, indicating elements, and instrument panels. Membrane switch has rigorous structure, beautiful appearance, good sealing, moisture resistance, long service life, etc. It is widely used in electronic communications, electronic measurement instruments, industrial control, medical equipment, automotive industry, smart toys, household appliances and other fields.

[0003] Patent No. 201620211242.X discloses an electronic membrane switch, which ensures high wear resistance and long service life of the electronic membrane switch.

[0004] However, when the existing electronic membrane switch is used, the membrane on the electronic membrane switch will become loose during long-term use, which will cause the trigger sheet in the membrane to be unable to accurately contact the circuit board in the switch, resulting in a decrease in the sensitivity of the electronic membrane switch. At the same time, when the pressure of pressing the electronic membrane switch is too large, the circuit board in the electronic membrane switch is subjected to excessive impact force, which will have a certain impact on the service life of the circuit board in the electronic membrane switch. Therefore, an electronic membrane switch that prevents misalignment is provided. Utility Model Content

[0005] The main purpose of the utility model is to provide an electronic membrane switch that prevents misalignment. The utility model solves the problem of the existing electronic membrane switch that the trigger sheet of the membrane switch is prevented from being misaligned with the circuit board when in use, and the circuit board of the membrane switch is inconvenient to protect, by providing a fixing sleeve, a support rod, a connecting rod, a slide groove, a slider, a spring and a rubber block.

[0006] The technical solution adopted by the utility model to solve its technical problems is an electronic film switch to prevent dislocation, comprising a switch seat and a film layer, a push block connected to a trigger sheet is glued to the inner side of the film layer, a circuit board for opening and closing the switch is fixed by screws to the inner side of the switch seat, a support rod connected to a fixing sleeve is welded to one side of the push block, a connecting rod for sliding the fixing sleeve is welded to the inside of the switch seat, a sliding groove is provided inside the switch seat, and a sliding block connected to the support rod is slidably connected to the inner wall of the sliding groove, a spring for buffering is sleeved on the outer side of the connecting rod, a rubber block for buffering is fixed by screws to one side of the switch seat, a waterproof layer for improving waterproof performance is glued to the connection between the film layer and the switch seat, and a drying layer for improving drying performance in the switch seat is arranged on one side of the waterproof layer.

[0007] By adopting the above technical solution, when the push block in the film layer is pressed, the trigger piece inside the push block contacts the circuit board in the switch seat, and at the same time, the push block drives the support rod to move, and then the fixed sleeve in the support rod slides outside the connecting rod, and the slider on the support rod slides in the slide groove provided in the switch seat, thereby improving the contact stability between the trigger piece and the circuit board, and avoiding the misalignment of the trigger piece of the membrane switch and the circuit board;

[0008] When the fixing sleeve slides outside the connecting rod, the fixing sleeve presses the spring outside the connecting rod, and then the spring is compressed, and then the outer side of the support rod contacts the rubber block in the switch seat, thereby reducing the impact force of the contact between the trigger piece and the circuit board, which is convenient for protecting the circuit board in the switch seat;

[0009] The waterproof layer provided at the connection between the film layer and the switch seat is made of waterproof rubber to prevent external moisture from entering the switch seat. At the same time, the drying layer on one side of the waterproof layer dries the connection between the film layer and the switch seat, thereby keeping the internal environment of the switch seat dry.

[0010] Specifically, a heat-conducting layer B for heat dissipation is fixed by screws on one side of the circuit board, and a heat-conducting layer A for improving heat dissipation performance is bonded to the outer side of the heat-conducting layer B.

[0011] By adopting the above technical solution, when the circuit board in the switch seat is working, the circuit board will generate heat. The heat-conducting layer B outside the circuit board is made of copper foil, and the fine gaps on the copper foil transfer the heat of the circuit board. At the same time, the heat-conducting layer A arranged outside the heat-conducting layer B is made of thermal grease, and the thermal grease transfers the heat on the circuit board in the switch seat again, thereby improving the heat dissipation efficiency of the circuit board in the switch seat.

[0012] Specifically, the inner size of the slide groove matches the outer size of the slide block.

[0013] By adopting the above technical solution, when the support rod moves in the switch seat, the slider on the support rod slides in the slide groove provided in the switch seat, and the inner side of the slide groove coincides with the outer side of the slider, so that the slider can slide in the slide groove easily.

[0014] Specifically, the inner size of the fixing sleeve matches the outer size of the connecting rod.

[0015] By adopting the above technical solution, when the support rod moves, the fixing sleeve on the support rod slides outside the connecting rod, and the inner side of the fixing sleeve matches the outer side of the connecting rod, thereby improving the stability of the movement of the support rod.

[0016] Specifically, the inner side of the drying layer is filled with a desiccant for improving the drying performance.

[0017] By adopting the above technical solution, the desiccant filled in the drying layer absorbs the liquid entering the switch seat, thereby maintaining a dry environment in the switch seat.

[0018] Beneficial effects of the utility model:

[0019] (1) The utility model discloses an anti-misalignment electronic membrane switch. When the push block in the membrane layer is pressed, the trigger piece on the inner side of the push block contacts the circuit board in the switch seat. At the same time, the push block drives the support rod to move. Then, the fixed sleeve in the support rod slides outside the connecting rod. The slider on the support rod slides in the slide groove provided in the switch seat, thereby improving the contact stability between the trigger piece and the circuit board and avoiding misalignment between the trigger piece and the circuit board of the membrane switch. When the fixed sleeve slides outside the connecting rod, the fixed sleeve presses the spring outside the connecting rod. Then, the spring is compressed. Then, the outer side of the support rod contacts the rubber block in the switch seat, thereby reducing the impact force of the contact between the trigger piece and the circuit board, which is convenient for protecting the circuit board in the switch seat.

[0020] (2) In the utility model, a dislocation-preventing electronic membrane switch is described. When the circuit board in the switch seat is working, the circuit board will generate heat. The heat-conducting layer B outside the circuit board is made of copper foil. The fine gaps on the copper foil transfer the heat of the circuit board. At the same time, the heat-conducting layer A arranged outside the heat-conducting layer B is made of thermal grease. The thermal grease transfers the heat on the circuit board in the switch seat again, thereby improving the heat dissipation efficiency of the circuit board in the switch seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of the overall structure of an electronic membrane switch that prevents misalignment according to the utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of an electronic membrane switch that prevents misalignment according to the utility model;

[0024] In the figure: 1. film layer; 2. switch seat; 3. drying layer; 4. waterproof layer; 5. push block; 6. trigger piece; 7. slider; 8. support rod; 9. fixing sleeve; 10. slide groove; 11. rubber block; 12. spring; 13. connecting rod; 14. heat conducting layer A; 15. heat conducting layer B; 16. circuit board. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0026] In order to avoid misalignment between the trigger sheet 6 of the membrane switch and the circuit board 16, as an embodiment of the present utility model, Figure 1 and Figure 2As shown, the utility model discloses an electronic film switch to prevent dislocation, comprising a switch seat 2 and a film layer 1, a push block 5 connected to a trigger sheet 6 is glued to the inner side of the film layer 1, a circuit board 16 for opening and closing the switch is fixed to the inner side of the switch seat 2 by screws, a support rod 8 connected to a fixed sleeve 9 is welded to one side of the push block 5, a connecting rod 13 for sliding the fixed sleeve 9 is welded to the inside of the switch seat 2, a slide groove 10 is provided inside the switch seat 2, and a slider 7 connected to the support rod 8 is slidably connected to the inner wall of the slide groove 10, a spring 12 for buffering is sleeved on the outer side of the connecting rod 13, a rubber block 11 for buffering is fixed to one side of the switch seat 2 by screws, a waterproof layer 4 for improving waterproof performance is bonded to the connection between the film layer 1 and the switch seat 2, and a drying layer 3 for improving the drying performance inside the switch seat 2 is provided on one side of the waterproof layer 4.

[0027] When in use, when the push block 5 in the film layer 1 is pressed, the trigger piece 6 inside the push block 5 contacts the circuit board 16 in the switch seat 2, and the push block 5 drives the support rod 8 to move, and then the fixed sleeve 9 in the support rod 8 slides outside the connecting rod 13, and the slider 7 on the support rod 8 slides in the slide groove 10 provided in the switch seat 2, thereby improving the contact stability between the trigger piece 6 and the circuit board 16, and avoiding the misalignment of the trigger piece 6 and the circuit board 16 of the membrane switch;

[0028] When the fixing sleeve 9 slides outside the connecting rod 13, the fixing sleeve 9 presses the spring 12 outside the connecting rod 13, and then the spring 12 is compressed, and then the outer side of the support rod 8 contacts the rubber block 11 in the switch seat 2, thereby reducing the impact force of the contact between the trigger piece 6 and the circuit board 16, so as to protect the circuit board 16 in the switch seat 2;

[0029] The waterproof layer 4 provided at the connection between the film layer 1 and the switch seat 2 is made of waterproof rubber to prevent external moisture from entering the switch seat 2. At the same time, the drying layer 3 on one side of the waterproof layer 4 dries the connection between the film layer 1 and the switch seat 2, thereby keeping the internal environment of the switch seat 2 dry.

[0030] In order to improve the efficiency of heat dissipation of the circuit board 16 in the switch seat 2, for example, Figure 2 As shown, the utility model also includes that a heat-conducting layer B15 for heat dissipation is fixed by screws on one side of the circuit board 16, and a heat-conducting layer A14 for improving heat dissipation performance is bonded to the outer side of the heat-conducting layer B15.

[0031] During use, when the circuit board 16 in the switch seat 2 is working, the circuit board 16 will generate heat. The heat-conducting layer B15 outside the circuit board 16 is made of copper foil, and the fine gaps on the copper foil transfer the heat of the circuit board 16. At the same time, the heat-conducting layer A14 arranged outside the heat-conducting layer B15 is made of thermal grease, and the thermal grease transfers the heat on the circuit board 16 in the switch seat 2 again, thereby improving the heat dissipation efficiency of the circuit board 16 in the switch seat 2.

[0032] In order for the slider 7 to slide in the slide groove 10, for example, Figure 2 As shown, the utility model also includes that the inner size of the slide groove 10 is consistent with the outer size of the slider 7.

[0033] When in use, when the support rod 8 moves in the switch seat 2, the slider 7 on the support rod 8 slides in the slide groove 10 provided in the switch seat 2, and the inner side of the slide groove 10 coincides with the outer side of the slider 7, so that the slider 7 can slide in the slide groove 10.

[0034] In order to improve the stability of the movement of the support rod 8, for example, Figure 2 As shown, the utility model also includes that the inner size of the fixing sleeve 9 is consistent with the outer size of the connecting rod 13.

[0035] During use, when the support rod 8 moves, the fixing sleeve 9 on the support rod 8 slides outside the connecting rod 13, and the inner side of the fixing sleeve 9 matches the outer side of the connecting rod 13, thereby improving the stability of the movement of the support rod 8.

[0036] In order to maintain a dry environment in the switch seat 2, for example, Figure 2 As shown, the utility model also includes that the inner side of the drying layer 3 is filled with a desiccant for improving the drying performance.

[0037] When in use, the desiccant filled in the desiccant layer 3 absorbs the liquid entering the switch seat 2 to maintain a dry environment in the switch seat 2 .

[0038] When the utility model is in use, when the push block 5 in the film layer 1 is pressed, the trigger piece 6 inside the push block 5 contacts the circuit board 16 in the switch seat 2, and the push block 5 drives the support rod 8 to move, and then the fixed sleeve 9 in the support rod 8 slides outside the connecting rod 13, and the slider 7 on the support rod 8 slides in the slide groove 10 provided in the switch seat 2, thereby improving the contact stability between the trigger piece 6 and the circuit board 16, and avoiding the misalignment of the trigger piece 6 of the membrane switch and the circuit board 16;

[0039] When the fixing sleeve 9 slides outside the connecting rod 13, the fixing sleeve 9 presses the spring 12 outside the connecting rod 13, and then the spring 12 is compressed, and then the outer side of the support rod 8 contacts the rubber block 11 in the switch seat 2, thereby reducing the impact force of the contact between the trigger piece 6 and the circuit board 16, so as to protect the circuit board 16 in the switch seat 2;

[0040] The waterproof layer 4 provided at the connection between the film layer 1 and the switch seat 2 is made of waterproof rubber to prevent external moisture from entering the switch seat 2. At the same time, the drying layer 3 on one side of the waterproof layer 4 dries the connection between the film layer 1 and the switch seat 2, thereby keeping the internal environment of the switch seat 2 dry.

[0041] When the circuit board 16 in the switch seat 2 is working, the circuit board 16 generates heat. The heat-conducting layer B15 outside the circuit board 16 is made of copper foil. The fine gaps on the copper foil transfer the heat of the circuit board 16. At the same time, the heat-conducting layer A14 arranged outside the heat-conducting layer B15 is made of thermal conductive silicone grease. The thermal conductive silicone grease transfers the heat on the circuit board 16 in the switch seat 2 again, thereby improving the heat dissipation efficiency of the circuit board 16 in the switch seat 2.

[0042] When the support rod 8 moves in the switch seat 2, the slider 7 on the support rod 8 slides in the slide groove 10 provided in the switch seat 2, and the inner side of the slide groove 10 coincides with the outer side of the slider 7, so that the slider 7 can slide in the slide groove 10.

[0043] When the support rod 8 moves, the fixing sleeve 9 on the support rod 8 slides outside the connecting rod 13, and the inner side of the fixing sleeve 9 matches the outer side of the connecting rod 13, thereby improving the stability of the movement of the support rod 8;

[0044] The desiccant filled in the desiccant layer 3 absorbs the liquid entering the switch seat 2 to maintain a dry environment in the switch seat 2 .

[0045] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. An electronic membrane switch for preventing misalignment, characterized in that: The switch seat (2) comprises a switch seat (2) and a film layer (1), wherein a push block (5) connected to a trigger plate (6) is glued to the inner side of the film layer (1), a circuit board (16) for turning on and off the switch is fixed to the inner side of the switch seat (2) by screws, a support rod (8) connected to a fixing sleeve (9) is welded to one side of the push block (5), a connecting rod (13) for sliding the fixing sleeve (9) is welded to the inside of the switch seat (2), a sliding groove (10) is provided inside the switch seat (2), and a sliding block (7) connected to the support rod (8) is slidably connected to the inner wall of the sliding groove (10), a spring (12) for buffering is sleeved on the outer side of the connecting rod (13), a rubber block (11) for buffering is fixed to one side of the switch seat (2), a waterproof layer (4) for improving waterproof performance is glued to the connection between the film layer (1) and the switch seat (2), and a drying layer (3) for improving the drying performance inside the switch seat (2) is arranged on one side of the waterproof layer (4).

2. The anti-misalignment electronic membrane switch according to claim 1, characterized in that: A heat-conducting layer B (15) for heat dissipation is fixed by screws on one side of the circuit board (16), and a heat-conducting layer A (14) for improving heat dissipation performance is bonded to the outer side of the heat-conducting layer B (15).

3. The anti-misalignment electronic membrane switch according to claim 1, characterized in that: The inner size of the slide groove (10) matches the outer size of the slide block (7).

4. The anti-misalignment electronic membrane switch according to claim 1, characterized in that: The inner size of the fixing sleeve (9) matches the outer size of the connecting rod (13).

5. The anti-misalignment electronic membrane switch according to claim 1, characterized in that: The inner side of the drying layer (3) is filled with a desiccant for improving the drying performance.

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