Lightweight compression-resistant membrane keyboard

Abstract

The utility model discloses a lightweight compression-resistant membrane keyboard, which particularly relates to the technical field of membrane keyboards and comprises a bottom plate, a positioning plate fixedly arranged at the top of the bottom plate, an electrostatic inductor fixedly arranged at the top of the positioning plate, and a compression-resistant mechanism fixedly arranged at the top of the electrostatic inductor. The anti-pressure mechanism comprises an interlayer fixedly arranged at the top of the electrostatic inductor, a clamping groove is formed in the surface of the interlayer, a first magnetic attraction strip is fixedly arranged in the clamping groove, a second magnetic attraction strip is connected to one side of the first magnetic attraction strip in a magnetic attraction mode, a clamping strip is fixedly arranged at the top of the second magnetic attraction strip, the clamping strip is connected with the clamping groove in an inserted mode, and an upper cover frame is fixedly arranged at the top of the clamping strip; the bottom plate and the upper cover frame are both made of carbon fiber materials. According to the utility model, the pressure resistance and the supporting effect can be improved, the insensitivity of the key cap caused by large external force extrusion is further prevented, the hand feeling is lighter, the touch is smoother when touching the bottom, the waterproof and dustproof effects are realized, and the service life is long.

Description

Technical Field

[0001] The utility model relates to the technical field of membrane keyboards, and more specifically, to a lightweight, pressure-resistant membrane keyboard. Background Art

[0002] The keyboard is a device for inputting instructions and data to operate a computer. It is the most commonly used input device in life. With the development of technology, membrane keyboards have gradually appeared. They use membrane switches instead of mechanical switches. Membrane switches are composed of multiple layers of plastic film and conductive materials.

[0003] Existing membrane keyboards, based on the principle of membrane switches, require a space inside the keyboard for the spring to move, which results in the membrane keyboard being thick and easily affected by dust and liquid.

[0004] After searching, the Chinese patent with authorization announcement number CN216593889U discloses a membrane keyboard. The structure is designed with a new flexible pressure sensor structure, and the first end of the data acquisition module is connected to the flexible pressure sensor, and the second end of the data acquisition module is connected to the microprocessor. In addition, the packaging structure is used to package the microprocessor, data acquisition module, communication module and sensing electrode into a whole, which is tightly connected without having to reserve capacitor space, further reducing the thickness of the membrane keyboard.

[0005] However, in actual use, the membrane keyboard of this structure is relatively simple in structure. When it is squeezed by a large external force, such as when it is squeezed by other objects in a backpack, the keys are easily squeezed, thereby easily damaging the membrane circuit inside the keyboard, causing the keys to malfunction. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a lightweight pressure-resistant membrane keyboard to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] A lightweight, pressure-resistant membrane keyboard comprises a bottom plate, a positioning plate fixedly provided on the top of the bottom plate, an electrostatic inductor fixedly provided on the top of the positioning plate, and a pressure-resistant mechanism fixedly provided on the top of the electrostatic inductor;

[0009] The pressure-resistant mechanism includes an interlayer fixedly arranged on the top of the electrostatic sensor, a card slot is opened on the surface of the interlayer, a first magnetic strip is fixedly arranged inside the card slot, a second magnetic strip is magnetically connected to one side of the first magnetic strip, a card strip is fixedly arranged on the top of the second magnetic strip, the card strip is plugged into the card slot, an upper cover frame is fixedly arranged on the top of the card strip, and the bottom plate and the upper cover frame are both made of carbon fiber material.

[0010] By adopting the above technical solution: in order to improve the pressure resistance and supporting effect, thereby preventing the keycaps from being insensitive due to large external force squeezing, and at the same time being waterproof and dustproof, further strengthening the protection.

[0011] As a further description of the above technical solution: a key mechanism is fixedly provided on the top of the electrostatic sensor, and the key mechanism includes a sensing electrode fixedly provided on the top of the electrostatic sensor, and limit frames are fixedly provided on both sides of the sensing electrode, and the inner part of the limit frame is slidably connected to a limit bar, and a keycap is fixedly provided on the top of the limit bar, and a keycap column is fixedly provided on the bottom of the keycap, and a protruding block is fixedly provided on the bottom of the keycap column, and a spring is provided on the outer sleeve of the keycap column.

[0012] By adopting the above technical solution, the keystroke feel is made lighter and the keystroke sound is made softer, thereby improving the hand feel.

[0013] As a further description of the above technical solution: a support tube is fixedly provided on one side of the interlayer, electronic hardware is fixedly provided inside the support tube, a waterproof layer is fixedly provided on the surface of the upper cover frame and the keycap, a pattern layer is fixedly provided on the top of the waterproof layer, and a silicone layer is fixedly provided on the top of the pattern layer.

[0014] By adopting the above technical solution: in order to enhance the dustproof and waterproof effects, and effectively improve the wear resistance of the keys.

[0015] The technical effects and advantages of this utility model are:

[0016] 1. By setting up a pressure-resistant mechanism, compared with the existing technology, by pulling the upper cover frame upward, the card strip at the bottom of the upper cover frame is driven to move, and then the card strip drives the second magnetic strip to move upward, so that the second magnetic strip is separated from the first magnetic strip, and then the card strip is driven to separate from the card slot, so that the upper cover frame is removed, thereby facilitating the installation and disassembly of the upper cover frame. Since the height of the upper cover frame is higher than the keycap, it effectively prevents external objects from directly squeezing the keycap when the keyboard is stored, thereby preventing key failure, providing sufficient structural support to resist external pressure, thereby improving pressure resistance, and has the advantages of moisture-proof, dust-proof and light weight, and is easy to clean;

[0017] 2. By setting up a key mechanism, compared with the existing technology, when the keycap is pressed, the keycap column at the bottom of the keycap is driven to move downward, thereby mobilizing the limit bar to move downward inside the limit frame, and then the spring is deformed, so that the raised block at the bottom of the keycap column is close to the sensing electrode, and the electrostatic sensor uses the capacitance change to detect the key action. When the key is not pressed, there is a certain capacitance value between the electrodes, thereby achieving low noise and a lighter feel when pressing the key, so as to improve the wear resistance of the key and make the feel better. 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 schematic diagram of the overall split structure of the utility model.

[0020] Figure 3 This is a schematic structural diagram of the anti-compression mechanism of the utility model.

[0021] Figure 4 It is a schematic diagram of the cross-sectional structure of the present utility model.

[0022] Figure 5 This is a schematic diagram of the key mechanism structure of the present utility model.

[0023] The accompanying drawings are marked as follows: 1. Base plate; 2. Positioning plate; 3. Electrostatic sensor; 4. Interlayer; 5. Card slot; 6. First magnetic strip; 7. Second magnetic strip; 8. Card strip; 9. Upper cover frame; 10. Sensing electrode; 11. Limit frame; 12. Limit strip; 13. Keycap; 14. Keycap column; 15. Raised block; 16. Spring; 17. Support tube; 18. Electronic hardware; 19. Waterproof layer; 20. Pattern layer; 21. Silicone layer. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] The embodiments of this application disclose Figure 1-5 The lightweight, pressure-resistant membrane keyboard shown includes a base plate 1, a positioning plate 2 fixedly disposed on the top of the base plate 1, an electrostatic inductor 3 fixedly disposed on the top of the positioning plate 2, and a pressure-resistant mechanism fixedly disposed on the top of the electrostatic inductor 3;

[0026] The anti-pressure mechanism includes an interlayer 4 fixedly arranged on the top of the electrostatic inductor 3, a card slot 5 is opened on the surface of the interlayer 4, a first magnetic strip 6 is fixedly arranged inside the card slot 5, and a second magnetic strip 7 is magnetically connected to one side of the first magnetic strip 6. A card strip 8 is fixedly arranged on the top of the second magnetic strip 7, and the card strip 8 is plugged into the card slot 5. An upper cover frame 9 is fixedly arranged on the top of the card strip 8. The bottom plate 1 and the upper cover frame 9 are both made of carbon fiber material. The user pulls the upper cover frame 9 upward to drive the card strip 8 at the bottom of the upper cover frame 9 to move, thereby causing the card strip 8 to drive the second magnetic strip 7 upward. Move to separate the second magnetic strip 7 from the first magnetic strip 6, and then drive the card strip 8 to separate from the card slot 5, so as to remove the upper cover frame 9, and then use it normally. After use, follow the above steps in reverse to install the upper cover frame 9. The height of the upper cover frame 9 is higher than the keycap 13, so that when the keyboard is stored, it can effectively prevent external objects from squeezing the keycap 13, thereby preventing key failure. At the same time, the upper cover frame 9 also effectively plays a dust-proof effect, preventing dust from accumulating between the two keycaps 13. At the same time, after removing the upper cover frame 9, it is convenient to clean.

[0027] Reference Figure 2-3 As shown, a key mechanism is fixedly provided on the top of the electrostatic sensor 3, and the key mechanism includes a sensing electrode 10 fixedly provided on the top of the electrostatic sensor 3, and a limit frame 11 is fixedly provided on both sides of the sensing electrode 10. The limit frame 11 is internally slidably connected to a limit bar 12, and a keycap 13 is fixedly provided on the top of the limit bar 12. A keycap column 14 is fixedly provided at the bottom of the keycap 13, and a protrusion 15 is fixedly provided at the bottom of the keycap column 14. A spring 16 is sleeved on the outer surface of the keycap column 14. When the keycap 13 is pressed, the keycap column 14 at the bottom of the keycap 13 is driven to move downward, thereby mobilizing the limit bar 12 to move downward inside the limit frame 11, and then the spring 16 is deformed, so that the protrusion 15 at the bottom of the keycap column 14 is close to the sensing electrode 10. The electrostatic sensor 3 uses capacitance changes to detect key press actions. When no key is pressed, there is a certain capacitance value between the electrodes, thereby achieving low noise, reducing the resistance generated by the shaft body to the key, and making the key press feel lighter.

[0028] Reference Figure 4-5As shown, a support tube 17 is fixedly provided on one side of the interlayer 4, and electronic hardware 18 is fixedly provided inside the support tube 17. A waterproof layer 19 is fixedly provided on the surface of the upper cover frame 9 and the key cap 13. A pattern layer 20 is fixedly provided on the top of the waterproof layer 19, and a silicone layer 21 is fixedly provided on the top of the pattern layer 20. The bottom plate 1 and the upper cover frame 9 are both made of carbon fiber material, which serves as the frame of the keyboard to provide good pressure resistance and stability, and has the advantages of light weight, high strength, and corrosion resistance. The surface of the upper cover frame 9 and the key cap 13 is provided with a waterproof layer 19, thereby improving the overall waterproof effect. Secondly, different keyboard colors and patterns can be designed through the pattern layer 20, and the silicone layer 21 can be used to improve the wear resistance of the keys and make the feel better.

[0029] Working principle of this utility model:

[0030] The utility model is a lightweight pressure-resistant membrane keyboard. When the device is in use, the bottom plate 1 and the upper cover frame 9 are made of carbon fiber material, which serves as the keyboard frame to provide good pressure resistance and stability, and has the advantages of light weight, high strength, and corrosion resistance.

[0031] When the keycap 13 is pressed, the keycap post 14 at the bottom of the keycap 13 moves downward, thereby mobilizing the limit bar 12 to move downward inside the limit frame 11, and then the spring 16 is deformed, so that the raised block 15 at the bottom of the keycap post 14 is close to the sensing electrode 10. The electrostatic sensor 3 uses the capacitance change to detect the key action. When the key is not pressed, there is a certain capacitance value between the electrodes, thereby achieving low noise and reducing the resistance of the shaft to the key, thereby making the key feel lighter. The elasticity of the spring 16 also enables a quick reset.

[0032] It is worth noting that the electrostatic sensor 3 changes the capacitance value by changing the distance between the protrusion 15 and the sensing electrode 10. The detection circuit in the keyboard can sense this capacitance change. When the capacitance change reaches a certain threshold, it is determined that a key has been pressed and the corresponding key signal is sent to the computer. This belongs to the prior art and will not be described in detail in this technical solution.

[0033] The user pulls the upper cover frame 9 upwards, driving the card strip 8 at the bottom of the upper cover frame 9 to move, and then the card strip 8 drives the second magnetic strip 7 to move upwards, so that the second magnetic strip 7 is separated from the first magnetic strip 6, and then drives the card strip 8 to separate from the card slot 5, so that the upper cover frame 9 is removed, and then normal use can be carried out. After use, the upper cover frame 9 can be installed according to the above steps in reverse. The height of the upper cover frame 9 is higher than the keycap 13, so that when the keyboard is stored, external objects are effectively prevented from squeezing the keycap 13, thereby preventing key failure. At the same time, the upper cover frame 9 also effectively plays a dust-proof effect, preventing dust from accumulating between the two keycaps 13. At the same time, after the upper cover frame 9 is removed, it is convenient to clean;

[0034] The surface of the upper cover frame 9 and the keycap 13 are both provided with a waterproof layer 19 to improve the overall waterproof effect. Secondly, the pattern layer 20 can be used to design different keyboard colors and patterns, and the silicone layer 21 can be used to improve the wear resistance of the keys and make the feel better.

[0035] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A lightweight, pressure-resistant membrane keyboard, comprising a base plate (1), characterized in that: A positioning plate (2) is fixedly provided on the top of the bottom plate (1), an electrostatic inductor (3) is fixedly provided on the top of the positioning plate (2), and a pressure-resistant mechanism is fixedly provided on the top of the electrostatic inductor (3); The anti-pressure mechanism comprises an interlayer (4) fixedly arranged on the top of the electrostatic inductor (3), a card slot (5) is provided on the surface of the interlayer (4), a first magnetic strip (6) is fixedly arranged inside the card slot (5), a second magnetic strip (7) is magnetically connected to one side of the first magnetic strip (6), a card strip (8) is fixedly arranged on the top of the second magnetic strip (7), the card strip (8) is plugged into the card slot (5), an upper cover frame (9) is fixedly arranged on the top of the card strip (8), and the bottom plate (1) and the upper cover frame (9) are both made of carbon fiber material.

2. The lightweight, pressure-resistant membrane keyboard according to claim 1, wherein: A key mechanism is fixedly provided on the top of the electrostatic inductor (3), and the key mechanism comprises an induction electrode (10) fixedly provided on the top of the electrostatic inductor (3), and limit frames (11) are fixedly provided on both sides of the induction electrode (10).

3. The lightweight, pressure-resistant membrane keyboard according to claim 2, wherein: The limiting frame (11) is internally slidably connected to a limiting strip (12), a keycap (13) is fixedly provided on the top of the limiting strip (12), and a keycap column (14) is fixedly provided on the bottom of the keycap (13).

4. The lightweight, pressure-resistant membrane keyboard according to claim 3, wherein: A protruding block (15) is fixedly provided at the bottom of the key cap column (14), and a spring (16) is sleeved on the outside of the key cap column (14).

5. The lightweight, pressure-resistant membrane keyboard according to claim 1, wherein: A support tube (17) is fixedly provided on one side of the interlayer (4), and electronic hardware (18) is fixedly provided inside the support tube (17).

6. The lightweight, pressure-resistant membrane keyboard according to claim 1, wherein: The surfaces of the upper cover frame (9) and the keycap (13) are both fixedly provided with a waterproof layer (19), the top of the waterproof layer (19) is fixedly provided with a pattern layer (20), and the top of the pattern layer (20) is fixedly provided with a silicone layer (21).

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