Membrane switch with high pressure resistance

Abstract

The utility model discloses a membrane switch with high pressure resistance, which belongs to the technical field of membrane switches and comprises a plastic panel, a wire rod connected to one end of the plastic panel and a connector connected to the wire rod, an installation chamber is formed inside the plastic panel, a plurality of installation grooves are arranged on the top wall of the plastic panel, and the installation grooves are communicated with the installation chamber. A plurality of mounting grooves are formed in the plastic panel, top contact blocks are inserted in the mounting grooves in a matched mode, film keys are fixedly bonded to the upper portions of the top contact blocks, the film keys are made of rubber and have elasticity, and the outer circles of the film keys are fixedly bonded to the top wall of the plastic panel; therefore, the thin-film key can drive the top contact block to be fixed on the plastic panel and not to fall down. According to the high-pressure-resistance membrane switch, the sliding plate and the upper-layer circuit board are subjected to resistance when being pressed downwards, so that the moving speed of the high-pressure-resistance membrane switch is reduced, damage caused by rapid pressing of the membrane key is avoided, the pressure resistance is improved, and the membrane switch has high pressure resistance.

Description

Technical Field

[0001] The utility model belongs to the technical field of membrane switches, and in particular relates to a high-pressure-resistant membrane switch. Background Art

[0002] Membrane switch is a common switch, which consists of four parts: panel, upper circuit, isolation layer and lower circuit. When the membrane switch is pressed, the contact of the upper circuit deforms downward and contacts with the plate of the lower circuit. When the finger is released, the contact of the upper circuit rebounds, the circuit is disconnected, and the loop triggers a signal.

[0003] In the process of realizing the utility model, the inventors found that there are at least the following problems in this technology: when the existing membrane switch is in use, it usually does not have a structure to limit the movement speed of the upper circuit board, so the pressure resistance is poor. This results in that when a person presses the button, if a large force is used, the upper circuit board may have a large impact on the lower circuit board and cause damage.

[0004] Therefore, we propose a high pressure-resistant membrane switch to solve the above problems. Utility Model Content

[0005] The main purpose of the utility model is to provide a high-pressure-resistant membrane switch, so that the slide plate and the upper circuit board will encounter resistance when pressed downward, thereby slowing down their movement speed, avoiding damage caused by quickly pressing the membrane button, and improving the pressure resistance. The membrane switch has high pressure resistance and can effectively solve the problems in the background technology.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A high-pressure-resistant membrane switch comprises a plastic panel, a wire connected to one end of the plastic panel, and a connector connected to the wire. An installation chamber is formed inside the plastic panel, a plurality of installation grooves are opened on the top wall of the plastic panel, top contact blocks are respectively inserted and matched in the plurality of installation grooves, and a membrane key is fixedly bonded above the top contact block. The membrane key is made of rubber and has elasticity, wherein the outer circle of the membrane key is fixedly bonded to the top wall of the plastic panel, so that the membrane key can drive the top contact block to remain fixed on the plastic panel and will not fall downward;

[0008] A slide plate is fixedly bonded to the bottom wall of the top contact block, and inclined blocks are integrally connected to the two side walls of the slide plate. An upper circuit board is fixedly installed at the bottom of the slide plate, and a bottom plate is fixedly bonded to the bottom wall of the installation chamber, and a lower circuit board is fixedly installed on the bottom plate, wherein the lower circuit board is located directly below the upper circuit board;

[0009] Side protrusions are symmetrically bonded to both sides of each slide plate in the installation room, and the two side protrusions correspond to the inclined blocks on both sides of the slide plate respectively, and a receiving groove is formed on the opposite sides of the two side protrusions, and a spring and a rebound block connected to each other are arranged in the receiving groove, and an inclined surface is arranged on the opposite sides of the two rebound blocks, and an inclined surface is also arranged on the opposite sides of the two inclined blocks on the slide plate;

[0010] In the installation room, ear plates are fixedly connected to the other two sides of each slide plate, and the two ear plates are slidably sleeved on two slide bars respectively, and each slide bar is vertically arranged and bonded and fixed to the plastic panel.

[0011] As a preferred embodiment, studs are screwed on both sides of the bottom wall of the slide plate, and the two studs on the slide plate are threaded on the side facing away from the slide plate, so that the studs can be fixed under the slide plate.

[0012] As a preferred embodiment, screws are screwed vertically on both sides of the bottom wall of the upper circuit board, and the two screws are respectively inserted into the two studs under the slide board, so that the upper circuit board can be fixed under the slide board.

[0013] As a preferred embodiment, studs are threaded on both sides of the top wall of the bottom plate, and the two studs on the bottom plate are threaded on the side facing away from the bottom plate, so that the studs can be fixed on the top of the bottom plate.

[0014] As a preferred embodiment, screws are screwed vertically on both sides of the top wall of the lower circuit board, and the two screws are respectively inserted into the two studs above the bottom plate; so that the lower circuit board can be fixed above the bottom plate.

[0015] As a preferred implementation scheme, the spring is arranged horizontally, and the two ends of the spring are respectively connected to the inner wall of the receiving groove and the rebound block, and the four side walls of the rebound block are all in contact with the inner wall of the receiving groove; so that the spring can drive the rebound block to expand and contract within a certain range.

[0016] In summary, the technical effects and advantages of the utility model are as follows:

[0017] The high-pressure-resistant membrane switch is provided with sliding bars on both sides of each slide plate, so that when the top contact block is subjected to pressure, the slide plate will be driven to slide along with the two sliding bars, thereby ensuring that the movement trajectory of the slide plate and the upper circuit board is fixed. At the same time, the inclined blocks on both sides of the slide plate correspond to the inclined surfaces on the two rebound blocks, so that the slide plate and the upper circuit board will encounter resistance when pressed downward, thereby slowing down their movement speed, avoiding damage caused by quickly pressing the membrane button, improving the pressure resistance, and making the membrane switch have high pressure resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a cross-sectional view of one side of the utility model;

[0020] Figure 3 It is a cross-sectional view of the other side of the utility model;

[0021] Figure 4 For this utility model Figure 3 A magnified view of the structure in the middle.

[0022] In the figure: 1. Plastic panel; 2. Wire; 3. Connector; 4. Installation chamber; 5. Membrane button; 6. Top contact block; 7. Slide plate; 8. Oblique block; 9. Upper circuit board; 10. Bottom plate; 11. Lower circuit board; 12. Side protrusion; 13. Storage slot; 14. Spring; 15. Rebound block; 16. Ear plate; 17. Slide rod; 18. Stud; 19. Screw. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Reference Figure 1-Figure 4 A high-pressure-resistant membrane switch comprises a plastic panel 1, a wire 2 connected to one end of the plastic panel 1, and a connector 3 connected to the wire 2. An installation chamber 4 is formed inside the plastic panel 1, and a plurality of installation grooves are provided on the top wall of the plastic panel 1. Top contact blocks 6 are respectively inserted and matched in the plurality of installation grooves, and a membrane key 5 is fixedly bonded above the top contact block 6. The membrane key 5 is made of rubber and has elasticity, wherein the outer circle of the membrane key 5 is fixedly bonded to the top wall of the plastic panel 1, so that the membrane key 5 can drive the top contact block 6 to remain fixed on the plastic panel 1 and will not fall downward;

[0025] A slide plate 7 is fixedly bonded to the bottom wall of the top contact block 6, and oblique blocks 8 are integrally connected to the two side walls of the slide plate 7. An upper circuit board 9 is fixedly installed at the bottom of the slide plate 7. A bottom plate 10 is fixedly bonded to the bottom wall of the installation chamber 4, and a lower circuit board 11 is fixedly installed on the bottom plate 10, wherein the lower circuit board 11 is located directly below the upper circuit board 9. Side protrusions 12 are symmetrically bonded to both sides of each slide plate 7 in the installation chamber 4, and the two side protrusions 12 correspond to the oblique blocks 8 on both sides of the slide plate 7, respectively. A receiving groove 13 is formed on the opposite side of the protrusion 12, and a spring 14 and a rebound block 15 connected to each other are arranged in the receiving groove 13. The spring 14 is arranged horizontally, and the two ends of the spring 14 are respectively connected to the inner wall of the receiving groove 13 and the rebound block 15. The four side walls of the rebound block 15 are in contact with the inner wall of the receiving groove 13, so that the spring 14 can drive the rebound block 15 to expand and contract within a certain range. An inclined surface is provided on the opposite side of the two rebound blocks 15, and an inclined surface is also provided on the opposite side of the two inclined blocks 8 on the slide plate 7.

[0026] In the installation chamber 4, the other two sides of each slide plate 7 are fixedly connected with ear plates 16, and the two ear plates 16 are slidably sleeved on two slide bars 17 respectively, and each slide bar 17 is vertically arranged and bonded and fixed to the plastic panel 1;

[0027] As for the installation method of the upper circuit board 9 and the lower circuit board 11, it should be noted that studs 18 are threaded on both sides of the bottom wall of the skateboard 7, and the two studs 18 on the skateboard 7 are tapped with threads on the side facing away from the skateboard 7, so that the studs 18 can be fixed under the skateboard 7, screws 19 are threaded in the vertical direction on both sides of the bottom wall of the upper circuit board 9, and the two screws 19 are respectively inserted into the two studs 18 under the skateboard 7, so that the upper circuit board 9 can be fixed under the skateboard 7, studs 18 are threaded on both sides of the top wall of the bottom plate 10, and the two studs 18 on the bottom plate 10 are tapped with threads on the side facing away from the bottom plate 10, so that the studs 18 can be fixed above the bottom plate 10, screws 19 are threaded in the vertical direction on both sides of the top wall of the lower circuit board 11, and the two screws 19 are respectively inserted into the two studs 18 above the bottom plate 10, so that the lower circuit board 11 can be fixed above the bottom plate 10.

[0028] The high-pressure membrane switch: when in use, a person presses his hand on the membrane button 5, which can cause the membrane button 5 to deform and cause the top contact block 6 and the slide plate 7 to sink. When the slide plate 7 sinks, the inclined blocks 8 on both sides thereof will gradually contact the inclined surfaces of the two rebound blocks 15. After the inclined surfaces of the inclined blocks 8 contact the inclined surfaces of the rebound blocks 15, the rebound blocks 15 will be gradually squeezed into the storage groove 13 by the inclined blocks 8, and the sinking rate of the inclined blocks 8 will be slowed down. During the entire sinking process of the slide plate 7, the ear plates 16 on both sides thereof slide on the two slide bars 17, ensuring that the sinking trajectory of the slide plate 7 and the upper circuit board 9 is certain, thereby ensuring the stability of the sinking of the upper circuit board 9. When the upper circuit board 9 contacts the lower circuit board 11, it can be turned on to realize the corresponding function. When the person releases his hand, the membrane button 5 will drive the top contact block 6, the slide plate 7 and the upper circuit board 9 to return to their original positions.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-pressure-resistant membrane switch, comprising a plastic panel (1), a wire (2) connected to one end of the plastic panel (1), and a connector (3) connected to the wire (2), wherein an installation chamber (4) is formed inside the plastic panel (1), characterized in that: The top wall of the plastic panel (1) is provided with a plurality of mounting grooves, and top contact blocks (6) are respectively inserted and matched in the plurality of mounting grooves, and a membrane key (5) is fixedly bonded above the top contact block (6), and the membrane key (5) is made of rubber material and has elasticity, wherein the outer circle of the membrane key (5) is fixedly bonded to the top wall of the plastic panel (1); A slide plate (7) is fixedly bonded to the bottom wall of the top contact block (6), and inclined blocks (8) are integrally connected to the two side walls of the slide plate (7), an upper circuit board (9) is fixedly mounted on the bottom of the slide plate (7), and a bottom plate (10) is fixedly bonded to the bottom wall of the installation chamber (4), and a lower circuit board (11) is fixedly mounted on the bottom plate (10); Side protrusions (12) are symmetrically bonded on both sides of each slide plate (7) in the installation chamber (4), and the two side protrusions (12) correspond to the inclined blocks (8) on both sides of the slide plate (7), respectively; a receiving groove (13) is formed on the opposite sides of the two side protrusions (12), and a spring (14) and a rebound block (15) connected to each other are arranged in the receiving groove (13); an inclined surface is arranged on the opposite sides of the two rebound blocks (15), and an inclined surface is also arranged on the opposite sides of the two inclined blocks (8) on the slide plate (7); Ear plates (16) are fixedly connected to the other two sides of each slide plate (7) in the installation chamber (4), and the two ear plates (16) are slidably mounted on two slide bars (17) respectively, and each slide bar (17) is vertically arranged and bonded and fixed to the plastic panel (1).

2. The high pressure resistance membrane switch according to claim 1, characterized in that: Both sides of the bottom wall of the slide plate (7) are threaded with studs (18), and the two studs (18) on the slide plate (7) are threaded on the side facing away from the slide plate (7).

3. The high pressure resistance membrane switch according to claim 2, characterized in that: Screws (19) are screwed in a vertical direction on both sides of the bottom wall of the upper circuit board (9), and the two screws (19) are respectively inserted into two studs (18) below the slide plate (7).

4. The high pressure resistance membrane switch according to claim 1, characterized in that: Both sides of the top wall of the bottom plate (10) are threaded with studs (18), and the two studs (18) on the bottom plate (10) are threaded on the side facing away from the bottom plate (10).

5. The high pressure resistance membrane switch according to claim 4, characterized in that: Screws (19) are screwed in a vertical direction on both sides of the top wall of the lower circuit board (11), and the two screws (19) are respectively inserted into two studs (18) above the bottom plate (10).

6. The high pressure resistance membrane switch according to claim 1, characterized in that: The spring (14) is arranged horizontally, and the two ends of the spring (14) are respectively connected to the inner wall of the receiving groove (13) and the rebound block (15), and the four side walls of the rebound block (15) are all in contact with the inner wall of the receiving groove (13).

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