A silent mechanical push button switch with silicone reset feel

Abstract

This utility model discloses a silent mechanical key switch with silicone reset feel, belonging to the field of computer keyboard switch technology. It includes an upper cover, a shaft core, reset silicone, a lower cover, a moving contact piece, and a stationary contact piece. The upper cover and the lower cover are connected by a snap-fit. The moving contact piece is located on the top of the reset silicone and at the bottom of the shaft core. A connecting spring is fixedly installed on the outside of the stationary contact piece, and the connecting spring penetrates the lower cover. This utility model achieves key action through silicone cup deformation and rebound. The shaft core bottoms out silently, and the elastic arm protrusion forms a buffer on the top of the upper cover. The mechanical contact structure of the moving and stationary contact pieces ensures rapid triggering and fast electrical response. The structure is detachable and easy to maintain. The snap-fit ​​connection between the upper and lower covers facilitates opening and replacement of internal components. When applied to a keyboard, each individual key switch can be disassembled for repair and replacement, improving product lifespan and maintainability.

Description

Technical Field

[0001] This utility model belongs to the field of computer keyboard switch technology, specifically a silent mechanical key switch with silicone reset feel. Background Technology

[0002] With the development of computer peripheral technology, users have placed higher demands on the feel, response speed, and noise performance of keyboard switches.

[0003] Currently, the mainstream keyboard switches mainly include two types: mechanical and membrane. Mechanical switches rely on metal contacts for conduction and are reset by a spring. Although they have the advantages of sensitive triggering and clear tactile feedback, they also have the problems of loud noise and heavy keystrokes. Membrane switches achieve contact conduction through the deformation of silicone domes. Their structure in keyboards mainly consists of an upper circuit film with contacts, an isolation layer, and a lower circuit film.

[0004] When the button is pressed, the contacts of the upper circuit film make contact with the plates of the lower circuit film to conduct electricity and form an electrical signal. When the button is released, the contacts bounce back to their initial state, breaking the circuit. It has the advantage of being quiet, but the conductivity response is slow, the structure is not disassembled, and maintenance is inconvenient. Therefore, the market urgently needs a new type of button switch that combines the trigger sensitivity of mechanical switches with the quietness and light touch of membrane switches. Utility Model Content

[0005] To overcome the above-mentioned defects, this utility model provides a silent mechanical push button switch with silicone reset feel, which solves the problems of slow conductive response speed, non-disassembly structure and inconvenient maintenance in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a silent mechanical push button switch with silicone reset feel, comprising an upper cover, a shaft core, reset silicone, a lower cover, a moving contact piece and a stationary contact piece, wherein the upper cover and the lower cover are connected by a snap fastener, and the top of the upper cover has a slot, and the shaft core is disposed in the slot, the reset silicone is located directly below the shaft core, and the reset silicone has a bowl-shaped structure; The movable contact piece is provided on the top of the reset silicone, and the movable contact piece is located at the bottom of the shaft core; The stationary contact piece is installed symmetrically inside the lower cover. The moving contact piece is movably connected to the stationary contact piece. A connecting spring is fixedly provided on the outside of the stationary contact piece, and the connecting spring penetrates the lower cover.

[0007] As a further embodiment of this utility model: elastic arms are installed on both sides of the outer wall of the shaft core, and protrusions are fixedly connected to the ends of the elastic arms.

[0008] As a further embodiment of this utility model: sliders are fixedly connected to both sides of the shaft core, and a groove is provided on the inner wall of the upper cover to cooperate with the sliders.

[0009] As a further embodiment of this utility model: the top of the reset silicone is provided with a through hole for use with the moving contact piece, and the moving contact piece penetrates the reset silicone.

[0010] As a further embodiment of this utility model: the inner wall of the upper cover is fixedly connected with connecting columns in a symmetrical structure, and the reset silicone is provided with mounting grooves on both sides to cooperate with the connecting columns.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: The button action is achieved through the deformation and rebound of the silicone cup. The bottoming out of the switch is silent, and the elastic arm protrusion forms a buffer on the top of the cover, further reducing the impact sound of the switch returning to its original position. By setting up a mechanical contact structure with moving and stationary contacts, the silicone cup provides a gentle reset force, ensuring rapid triggering and fast electrical response; The structure is detachable and easy to maintain: the upper and lower covers are connected by snaps, making it easy to open and replace internal components. When applied to keyboards, each individual keyboard switch can be disassembled for maintenance and replacement, improving product lifespan and maintainability. Attached Figure Description

[0012] Figure 1 This is a first-view schematic diagram of the overall structure of this utility model; Figure 2 This is a second-view schematic diagram of the overall structure of this utility model; Figure 3 This is a schematic diagram showing the overall structural cross-sectional effect of this utility model; Figure 4 This is a schematic diagram showing the overall structural disassembly of this utility model; Figure 5 This is a schematic diagram showing the separation effect of the top cover and the shaft core of this utility model; Figure 6 This is a schematic diagram illustrating the separation effect of the top cover and the reset silicone of this utility model. Figure 7 This is a schematic diagram showing the disassembly effect of the shaft core and the moving contact piece of this utility model; Figure 8 This is a three-dimensional structural diagram of the lower cover and static contact plate of this utility model.

[0013] In the diagram: 1. Top cover; 2. Shaft core; 3. Reset silicone; 4. Bottom cover; 5. Moving contact piece; 6. Stationary contact piece; 7. Slider; 8. Slide groove; 9. Through hole; 10. Elastic arm; 11. Protrusion; 12. Connecting spring; 13. Connecting post; 14. Mounting groove. Detailed Implementation

[0014] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0015] like Figures 1-8 As shown, this utility model provides a technical solution: A silent mechanical push button switch with silicone reset feel includes an upper cover 1, a shaft core 2, a reset silicone 3, a lower cover 4, a moving contact piece 5 and a stationary contact piece 6. The upper cover 1 and the lower cover 4 are connected by a snap-fit. The top of the upper cover 1 has a slot, and the shaft core 2 is disposed in the slot. The reset silicone 3 is located directly below the shaft core 2 and has a bowl-shaped structure. The top of the reset silicone 3 is provided with a movable contact piece 5, which is located at the bottom of the shaft core 2; The stationary contact piece 6 is installed symmetrically inside the lower cover 4. The moving contact piece 5 is movably connected to the stationary contact piece 6. A connecting spring piece 12 is fixedly provided on the outside of the stationary contact piece 6, and the connecting spring piece 12 passes through the lower cover 4. Specifically, when the user presses the keyboard keycap, the keycap will drive the spindle 2 installed in the slot of the upper cover 1 to move downward. During the downward movement of the spindle 2, it will contact and squeeze the cup-shaped reset silicone 3 directly below it. As the reset silicone 3 is squeezed and deforms downward, the moving contact piece 5 fixed at its top will also move downward synchronously until it contacts the stationary contact piece 6 symmetrically installed inside the lower cover 4. At this time, the moving and stationary contact pieces 6 form a circuit, and the current is transmitted through the connecting spring 12 fixed on the outside of the stationary contact piece 6 and passing through the lower cover 4 to complete the triggering of the key signal. When the user releases the keycap and the external force disappears, the bowl-shaped reset silicone 3 begins to bounce upward and return to its initial shape due to its own elasticity. The moving contact 5 moves upward with the reset silicone 3 and separates from the stationary contact 6, the circuit is broken, and the core 2 also returns to its initial position, and the entire key press process ends. The button action is achieved through the deformation and rebound of the bowl-shaped reset silicone 3. When the spindle 2 bottoms out, the flexible cushioning of the silicone avoids direct collision between metal parts, achieving a silent bottoming out and effectively improving the quietness of use. Secondly, the elasticity of the bowl-shaped silicone can provide a soft and uniform reset force, making the pressing feel delicate and comfortable, and reducing finger fatigue with long-term use. At the same time, the moving contact 5 and the stationary contact 6 adopt a mechanical contact structure, which does not rely on indirect triggering methods. The circuit switching response is fast and the conductivity stability is strong, which can meet the needs of scenarios with high triggering efficiency requirements such as high-speed typing and gaming. In addition, the upper cover 1 and the lower cover 4 are connected by a snap-fit. This structural design makes the switch as a whole detachable. By opening the snap-fit, the internal reset silicone 3, moving contact piece 5 and other components can be replaced. When applied to a keyboard, each independent keyboard switch can be disassembled, repaired and replaced individually without replacing the entire keyboard. This greatly improves the product's lifespan and maintainability, and reduces the cost of use. Elastic arms 10 are installed on both sides of the outer wall of the shaft core 2. A protrusion 11 is fixedly connected to the end of the elastic arm 10. A slider 7 is fixedly connected to both sides of the shaft core 2. A sliding groove 8 for use with the slider 7 is opened on the inner wall of the upper cover 1. A through hole 9 for use with the moving contact piece 5 is opened on the top of the reset silicone 3. The moving contact piece 5 passes through the reset silicone 3. A connecting post 13 is fixedly connected to the inner wall of the upper cover 1 in a symmetrical structure. Mounting grooves 14 for use with the connecting post 13 are opened on both sides of the reset silicone 3. Specifically, when the shaft core 2 is pressed, the sliders 7 on both sides of the shaft core 2 will slide smoothly along the grooves 8 on the inner wall of the upper cover 1 to prevent the shaft core 2 from shifting during movement. At the same time, the elastic arms 10 on both sides of the outer wall of the shaft core 2 naturally extend as the shaft core 2 moves down. The through hole 9 at the top of the reset silicone 3 provides a through channel for the moving contact piece 5, ensuring that the moving contact piece 5 can stably move down with the shaft core 2 and contact the stationary contact piece 6. The mutual cooperation between the connecting post 13 and the mounting groove 14 makes it easy to fix the reset silicone 3 between the upper cover 1 and the lower cover 4 for use. When the shaft core 2 is released, under the rebound action of the reset silicone 3, the shaft core 2 resets upward, and the slider 7 slides upward along the slide groove 8. At this time, the elastic arm 10 gradually contracts, and the protrusion 11 at its end contacts the inner side of the top of the upper cover 1. The protrusion 11 and the top of the upper cover 1 form a flexible buffer to reduce the upward impact force when the shaft core 2 resets. The moving contact piece 5 that penetrates the through hole 9 of the reset silicone 3 also moves upward synchronously with the shaft core 2, disengaging from the stationary contact piece 6 to complete the reset. The protrusion 11 at the end of the elastic arm 10 forms a buffer on the top of the upper cover 1. When the shaft core 2 moves upward to the top after reset, the protrusion 11 first contacts the upper cover 1 and absorbs the impact force through its own elasticity, further reducing the impact sound of the shaft core 2 hitting the top of the upper cover 1 when reset, thus achieving low noise throughout the entire key travel. Secondly, the sliders 7 on both sides of the shaft core 2 cooperate with the slide grooves 8 of the upper cover 1 to provide precise guidance for the up and down movement of the shaft core 2, avoiding problems such as jamming or offset of the shaft core 2, and ensuring the smoothness of the key action. The through hole 9 at the top of the reset silicone 3 allows the moving contact piece 5 to pass through stably and fit against the bottom of the shaft core 2, ensuring the synchronicity and stability of the moving contact piece 5 when moving with the shaft core 2, further ensuring the reliability of mechanical contact triggering. The working principle of this utility model is as follows: First, when the user presses the keyboard keycap, the keycap causes the spindle 2 installed in the slot of the upper cover 1 to move downward. After the spindle 2 moves downward, it squeezes the cup-shaped reset silicone 3 directly below it, causing the reset silicone 3 to deform downward. The moving contact 5 (through the through hole 9 at the top of the silicone) on the top of the reset silicone 3 moves downward synchronously with the deformation of the silicone until it contacts the stationary contact 6 symmetrically installed inside the lower cover 4. At this time, the moving and stationary contact 6 form a circuit, and the current is transmitted through the connecting spring 12 fixed on the outside of the stationary contact 6 and passing through the lower cover 4, thus completing the triggering of the key signal. When the user releases the keycap, the external force disappears, and the cup-shaped reset silicone 3 rebounds upward with its own elasticity and returns to its initial shape. The moving contact 5 moves upward with the rebound of the silicone and separates from the stationary contact 6, the circuit is broken, and the spindle 2 also returns to its initial position, realizing the complete triggering and reset cycle of the key. Secondly, the sliders 7 fixedly connected to both sides of the shaft core 2 will slide smoothly along the grooves 8 opened on the inner wall of the upper cover 1 during the pressing and resetting process, avoiding problems such as offset and jamming when the shaft core 2 moves up and down, ensuring that the shaft core 2 can accurately transmit the pressing force, and at the same time ensuring the stable contact position between the moving contact piece 5 and the stationary contact piece 6, further improving the reliability of triggering. It is worth mentioning that when the switch core 2 bottoms out, the flexible cushioning of the cup-shaped reset silicone 3 prevents direct collision of metal parts, eliminating bottoming-out noise from the source. At the same time, the elastic arms 10 installed on both sides of the outer wall of the switch core 2 and the protrusions 11 at their ends will first contact the inner side of the top of the top cover 1 when the switch core 2 returns to its original position. The flexible characteristics of the elastic arms 10 and the protrusions 11 absorb the impact force of the switch core 2 returning to its original position, further reducing the impact sound between the switch core 2 and the top of the top cover 1, and achieving quietness throughout the entire travel of the button. Finally, the upper cover 1 and the lower cover 4 are connected by a snap-fit. This structure allows the switch to be disassembled as a whole. When internal components such as the reset silicone 3 and the moving contact 5 are worn out, the damaged components can be replaced individually simply by opening the snap-fit. When applied to a keyboard, each individual keyboard switch can be disassembled, repaired, and replaced individually without replacing the entire keyboard. This significantly improves the product's lifespan and maintainability, and reduces usage costs.

[0016] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A silent mechanical push button switch with silicone reset feel, comprising an upper cover (1), a shaft core (2), reset silicone (3), a lower cover (4), a moving contact piece (5), and a stationary contact piece (6), wherein the upper cover (1) and the lower cover (4) are connected by a snap-fit, and the top of the upper cover (1) has a slot, and the shaft core (2) is disposed in the slot, characterized in that: The reset silicone (3) is located directly below the shaft core (2), and the reset silicone (3) has a bowl-shaped structure; The reset silicone (3) is provided with the moving contact piece (5) on top, and the moving contact piece (5) is located at the bottom of the shaft core (2); The stationary contact piece (6) is installed symmetrically inside the lower cover (4). The moving contact piece (5) is movably connected to the stationary contact piece (6). A connecting spring piece (12) is fixedly provided on the outside of the stationary contact piece (6). The connecting spring piece (12) passes through the lower cover (4).

2. A silent mechanical key switch with silicon gel reset hand feeling according to claim 1, characterized in that: The outer walls of the shaft core (2) are equipped with elastic arms (10), and the ends of the elastic arms (10) are fixedly connected with protrusions (11).

3. A mechanical key switch with a silicone reset hand feel and mute according to claim 1, characterized in that: The shaft core (2) is fixedly connected to two sides with sliders (7), and the inner wall of the upper cover (1) is provided with a groove (8) for use with the sliders (7).

4. A mechanical key switch according to claim 1, wherein: the silicone rubber is a thermosetting silicone rubber. The reset silicone (3) has a through hole (9) at the top for use with the moving contact piece (5), and the moving contact piece (5) passes through the reset silicone (3).

5. A silent mechanical key switch with silicon gel reset hand feeling according to claim 1, characterized in that: The inner wall of the upper cover (1) is fixedly connected with a connecting column (13) in a symmetrical structure, and the reset silicone (3) has mounting grooves (14) on both sides for use with the connecting column (13).

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