A tactile on-keyboard membrane switch

Abstract

The utility model discloses a kind of keyboard membrane switch of light touch connection, specifically related to membrane switch technical field, including membrane switch body, the top of membrane switch body Both sides are fixedly connected with side plate, the surface of side plate is equipped with sliding slot, the inside of sliding slot is slidably connected with slider, the inside of slider is equipped with sliding slot, the inside of sliding slot is slidably connected with limit rod, the top of limit rod is fixedly connected with the lever of pushing, the outside wall of limit rod is equipped with reset spring, the side wall of side plate is equipped with several limit holes, and several limit holes are connected with limit rod snap-fit;Through the cooperation setting of lever of pushing, limit rod, reset spring, using reset spring extrusion lever of pushing and make it insert into limit hole, to limit and fix slider, limit and fix the protection mechanism after position adjustment simultaneously, improve the stability after position adjustment of protection mechanism, make it to the protection of pressure touch button.

Description

Technical Field

[0001] This utility model relates to the field of membrane switch technology, and more specifically, to a touch-activated keyboard membrane switch. Background Technology

[0002] A membrane switch is an operating system that integrates button functions, indicator elements, and an instrument panel. It consists of four parts: panel, upper circuit, isolation layer, and lower circuit. When the membrane switch is pressed, the contacts of the upper circuit deform downward and make contact with the plates of the lower circuit to conduct electricity. When the finger is released, the contacts of the upper circuit bounce back, the circuit is broken, and the circuit triggers a signal. Membrane switches have a rigorous structure, beautiful appearance, good sealing, moisture resistance, and long service life. They are widely used in electronic communication, electronic measurement instruments, industrial control, medical equipment, automotive industry, smart toys, home appliances and other fields.

[0003] A search revealed that publication number CN222421734U discloses a tactile contact type keyboard membrane switch, including a membrane switch and a protective mechanism. The protective mechanism, comprising a pressure-sensitive button, side plates, a slide groove, a slider, a spring plate, and a pressure cover, is located on the surface of the membrane switch. The pressure-sensitive button is located on the surface of the membrane switch, and side plates are located on both sides of the top of the switch. Adjusting the slider position allows the pressure cover to fit precisely into the outer periphery of the pressure-sensitive button, thus shielding and protecting the button. The spring plate acts as a connector. When the corresponding pressure-sensitive button needs to be operated, the corresponding pressure cover is pressed directly. After pressing, the spring plate controls the pressure cover to automatically reset. Compared to existing switch assemblies, this design does not affect the normal use of the membrane switch while providing excellent protection, preventing damage to the surface membrane from affecting the normal contact of the switch. The inventors discovered the following problems with the existing technology during the development of this utility model:

[0004] When the device is in use, the position of the slider is fixed by bolts, which in turn fixes the position of the pressure cover. However, during long-term use, frequent disassembly of the bolts will cause the bolt threads to strip, making it impossible to fix the slider and the pressure cover, thus preventing the pressure cover from protecting the touch button.

[0005] Therefore, a touch-activated keyboard membrane switch is proposed to address the above problems. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a touch-activated keyboard membrane switch to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a touch-activated keyboard membrane switch, comprising a membrane switch body, side plates fixedly connected to both sides of the top of the membrane switch body, a sliding groove formed on the surface of the side plate, a slider slidably connected inside the sliding groove, a sliding groove formed inside the slider, a limit rod slidably connected inside the sliding groove, a toggle rod fixedly connected to the top of the limit rod, a return spring sleeved on the outer side wall of the limit rod, and a plurality of limit holes formed on the side wall of the side plate, the plurality of limit holes engaging with the limit rod.

[0008] Preferably, a protective mechanism is provided on one side of the slider, the protective mechanism including a spring sheet fixedly connected to the slider, and a pressure cap fixedly connected to one end of the spring sheet.

[0009] Preferably, the inside of the pressure cap has a hollow groove, and an adhesive strip is fixedly connected to the bottom of the hollow groove.

[0010] Preferably, the spring sheet is made of shape memory alloy material, and the pressure cap is made of silicone material.

[0011] Preferably, the surface of the membrane switch body is provided with a plurality of pressure-sensitive buttons, and the plurality of pressure-sensitive buttons are engaged and connected with the slot.

[0012] Preferably, a waterproof connector structure is provided on one side of the membrane switch body. The waterproof connector structure includes a connecting body that is fixedly connected to the connecting end of the membrane switch body, and a sealing sleeve is provided on the outer wall of the connecting body.

[0013] Preferably, one end of the connecting body is fixedly connected to a connecting wire, the connecting wire is located inside the sealing sleeve, and one end of the connecting wire is fixedly connected to a mating socket.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] 1. Compared with the prior art, this tactile contact type keyboard membrane switch uses a toggle lever, a limit lever, and a return spring in combination. The return spring squeezes the toggle lever, causing it to move the limit lever towards the limit hole on the side plate surface and insert it into the limit hole, thereby limiting and fixing the slider. At the same time, it limits and fixes the protective mechanism after the position is adjusted, improving the stability of the protective mechanism after the position is adjusted, and protecting the pressed key.

[0016] 2. Compared with the prior art, this touch-activated keyboard membrane switch, through the cooperation of the connecting body and the sealing sleeve, first connects the connecting body to the connecting wire, and then puts the sealing sleeve on the connection between the connecting body and the connecting wire to prevent moisture from seeping in from the connection between the connecting body and the connecting wire, thus protecting the internal circuit. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the membrane switch body of this utility model.

[0018] Figure 2 This is a three-dimensional cross-sectional structural diagram of the slider of this utility model.

[0019] Figure 3 This is a three-dimensional cross-sectional structural diagram of the protective mechanism of this utility model.

[0020] Figure 4 This is a three-dimensional structural diagram of the docking socket of this utility model.

[0021] The attached diagram is labeled as follows: 1. Membrane switch body; 2. Press-button button; 3. Side plate; 4. Slide groove; 5. Slider; 6. Limiting hole; 7. Slide groove; 8. Toggle lever; 9. Limiting lever; 10. Return spring; 11. Spring sheet; 12. Cover; 13. Hollow groove; 14. Adhesive strip; 15. Connecting wire; 16. Connecting socket; 17. Protective mechanism; 18. Waterproof connector structure; 19. Connecting body; 20. Sealing sleeve. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1

[0024] As attached Figures 1 to 4 The illustrated tactile contact type membrane switch includes a membrane switch body 1. Side plates 3 are fixedly connected to both sides of the top of the membrane switch body 1. A sliding groove 4 is formed on the surface of the side plate 3. A slider 5 is slidably connected inside the sliding groove 4. A sliding groove 7 is formed inside the slider 5. A limit rod 9 is slidably connected inside the sliding groove 7. A toggle rod 8 is fixedly connected to the top of the limit rod 9. A return spring 10 is sleeved on the outer wall of the limit rod 9. A plurality of limit holes 6 are formed on the side wall of the side plate 3. The plurality of limit holes 6 are engaged with the limit rod 9. A protective mechanism 17 is provided on one side of the slider 5.

[0025] In use, the device first moves the limiting rod 9 by the toggle lever 8, causing the slider 5 to slide inside the slide groove 4. Then, the slider 5 moves the protective mechanism 17, thereby adjusting the position of the protective mechanism 17. After adjusting to the appropriate position, the limiting rod 9 is released. At this time, the return spring 10 presses the toggle lever 8, causing the toggle lever 8 to move the limiting rod 9 towards the limiting hole 6 provided on the surface of the side plate 3 and insert it into the limiting hole 6, thereby limiting and fixing the slider 5. At the same time, it limits and fixes the protective mechanism 17 after the position adjustment, improving the stability of the protective mechanism 17 after the position adjustment and protecting the pressure button 2.

[0026] Example 2

[0027] Based on Example 1, the solution in Example 1 will be further described in detail below with reference to the specific working method, such as... Figures 1 to 4 As shown below, see details:

[0028] In a preferred embodiment, the protective mechanism 17 includes a spring sheet 11 fixedly connected to the slider 5. The spring sheet 11 serves as a connector, and a pressure cap 12 is fixedly connected to one end of the spring sheet 11. The pressure cap 12 provides protection for the membrane switch body 1. The pressure cover 12 has an internal slot 13, and a rubber strip 14 is fixedly connected to the bottom of the slot 13. The rubber strip 14 can provide a buffer at the connection position. The spring sheet 11 is made of shape memory alloy material. Shape memory alloy has excellent fatigue resistance and can maintain stable elastic deformation after repeated pressing, which can effectively extend the service life of the protective mechanism 17. The pressure cover 12 is made of silicone material. The surface of the membrane switch body 1 is provided with several pressure-sensitive buttons 2. The pressure-sensitive buttons 2 are engaged with the slot 13. When it is necessary to operate the pressure-sensitive button 2 at the corresponding position, simply press the pressure cover 12 at the corresponding position. At this time, the pressure-sensitive button 2 is in contact with the slot 13 on the surface of the pressure cover 12. At the same time, the rubber strip 14 can provide a buffer at the connection position. After pressing, the spring sheet 11 controls the pressure cover 12 to automatically reset. Compared with the existing switch assembly, it does not affect the normal use of the membrane switch body 1, and at the same time, it can provide good protection and prevent damage to the surface membrane from affecting the normal pressure of the switch.

[0029] In a preferred embodiment, a waterproof connector structure 18 is provided on one side of the membrane switch body 1. The waterproof connector structure 18 includes a connecting body 19 fixedly connected to the connecting end of the membrane switch body 1. A sealing sleeve 20 is provided on the outer wall of the connecting body 19. The sealing sleeve 20 can effectively prevent moisture from seeping in from the connection between the connecting wire 15 and the membrane switch body 1, thus protecting the internal circuit. A connecting wire 15 is fixedly connected to one end of the connecting body 19. The connecting wire 15 is located inside the sealing sleeve 20. A docking socket 16 is fixedly connected to one end of the connecting wire 15. In use, the docking socket 16 is first connected to an external device, and then electrical transmission is achieved between the connecting wire 15 and the membrane switch body 1. At the same time, the sealing sleeve 20 can effectively prevent moisture from seeping in from the connection between the connecting wire 15 and the membrane switch body 1, thus protecting the internal circuit.

[0030] The working process of this utility model is as follows: First, the connecting body 19 is connected to the connecting line 15. Then, the sealing sleeve 20 is placed on the connection between the connecting body 19 and the connecting line 15 to prevent moisture from seeping in from the connection between the connecting line 15 and the membrane switch body 1, thus protecting the internal circuit. Next, the docking socket 16 is connected to the external device. Then, electrical transmission is achieved between the connecting line 15 and the membrane switch body 1. Next, the toggle lever 8 moves the limiting lever 9, causing the slider 5 to slide inside the slide groove 4. Then, the slider 5 drives the protective mechanism 17 to move, thereby adjusting the position of the protective mechanism 17. When the protective mechanism 17 moves to directly above the pressure button 2, the limiting lever 9 is released. At this time, the return spring 10 squeezes the toggle lever 8, causing the toggle lever 8 to move the limiting lever 9 towards the limiting hole 6 provided on the surface of the side plate 3 and insert it into the inside of the limiting hole 6, thereby limiting and fixing the slider 5.

[0031] Simultaneously, the protective mechanism 17 after position adjustment is limited and fixed to improve the stability of the protective mechanism 17 after position adjustment, so as to protect the pressure button 2. When the pressure button 2 in the corresponding position needs to be operated, the pressure cover 12 in the corresponding position can be pressed directly. At this time, the pressure button 2 fits into the groove 13 set on the surface of the pressure cover 12. At the same time, the setting of the rubber strip 14 can play a buffering role at the connection position. After pressing, the spring sheet 11 controls the pressure cover 12 to automatically reset. Compared with the existing switch assembly, it does not affect the normal use of the membrane switch body 1, and at the same time can play a good protective role, avoiding damage to the surface membrane and affecting the normal pressure of the switch. The above is the working principle of this kind of light-touch connection keyboard membrane switch.

Claims

1. A tactile on-keyboard membrane switch, comprising a membrane switch body (1), characterized in that: The membrane switch body (1) has side plates (3) fixedly connected to both sides of its top. The surface of the side plate (3) is provided with a sliding groove (4). A slider (5) is slidably connected inside the sliding groove (4). A sliding groove (7) is provided inside the slider (5). A limit rod (9) is slidably connected inside the sliding groove (7). A toggle rod (8) is fixedly connected to the top of the limit rod (9). A reset spring (10) is sleeved on the outer side wall of the limit rod (9). A number of limit holes (6) are provided on the side wall of the side plate (3). The number of limit holes (6) are engaged with the limit rod (9).

2. The dome switch of claim 1, wherein: A protective mechanism (17) is provided on one side of the slider (5). The protective mechanism (17) includes a spring sheet (11) fixedly connected to the slider (5). A pressure cap (12) is fixedly connected to one end of the spring sheet (11).

3. A touch-activated keyboard membrane switch according to claim 2, characterized in that: The inside of the pressure cap (12) is provided with a hollow groove (13), and a rubber strip (14) is fixedly connected to the bottom of the hollow groove (13).

4. A touch-activated keyboard membrane switch according to claim 2, characterized in that: The spring sheet (11) is made of shape memory alloy material, and the pressure cap (12) is made of silicone material.

5. A touch-activated keyboard membrane switch according to claim 1, characterized in that: The surface of the membrane switch body (1) is provided with a plurality of pressure-sensitive buttons (2), and the plurality of pressure-sensitive buttons (2) are engaged with the slots (13).

6. The dome switch of claim 1 wherein: the dome switch is a tactile on-keyboard membrane switch. A waterproof connector structure (18) is provided on one side of the membrane switch body (1). The waterproof connector structure (18) includes a connecting body (19) that is fixedly connected to the connecting end of the membrane switch body (1). A sealing sleeve (20) is provided on the outer wall of the connecting body (19).

7. A tactile on-keyboard membrane switch according to claim 6, characterized in that: One end of the connecting body (19) is fixedly connected to a connecting wire (15), the connecting wire (15) is located inside the sealing sleeve (20), and one end of the connecting wire (15) is fixedly connected to a docking socket (16).

Images