A silent switch

Abstract

The utility model provides a kind of soundless switch, base is equipped with first terminal and second terminal, the base is fixedly installed with metal spring and button by cover, button is silica gel material, button includes press handle and fixed block, four corners of fixed block are equipped with top post, metal spring is equipped with four supporting legs, top post and the top of supporting leg abut, supporting leg and first terminal contact.In button pressing, the lower end of the press handle of button acts on the top of metal spring, so that metal spring is deformed, and then contact with second terminal, so that first terminal and second terminal are communicated, in the process, because the deformation speed of metal spring is relatively fast, it is contacted with second terminal by downward impact, the vibration generated is transmitted to supporting leg, and is filtered by the top post of fixed block, so as to suppress the vibration when metal spring is deformed, so as to suppress the sound when switch is pressed, improve user experience.

Description

Technical Field

[0001] This utility model belongs to the field of switch technology, specifically relating to a silent switch. Background Technology

[0002] A tactile switch is a common type of electronic switch. Its working principle involves applying sufficient force in the direction of operation to deform a metal spring inside the switch, thus closing or connecting the circuit. When the external force is removed, the metal spring returns to its original shape, and the switch opens. However, existing tactile switches typically produce a loud noise when pressed. This noise can significantly impact the user experience, especially in relatively confined environments such as cars. Utility Model Content

[0003] The purpose of this invention is to provide a silent switch to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a silent switch, including a base, the base having a first terminal and a second terminal, a metal spring and a button fixedly mounted on the base by a cover plate, the button being made of silicone, the button including a handle and a fixing block, the fixing block having a top post at each of its four corners, the metal spring having four supporting feet, the top posts abutting against the tops of the supporting feet, and the supporting feet contacting the first terminal.

[0005] Preferably, the first terminal has a wear-resistant protrusion corresponding to the support foot, and the support foot contacts the wear-resistant protrusion.

[0006] Preferably, the cover plate is made of stainless steel.

[0007] Preferably, the base has a fixing part on its side, the cover plate has a buckle, and the buckle has a reinforcing buckle.

[0008] Preferably, the cover plate is provided with side baffles.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] The button of this invention is made of silicone to reduce the noise when pressed. The metal spring has four supporting feet, and the four corners of the button's fixing block have top posts that abut against the tops of the supporting feet. When the button is pressed, the lower end of the button handle acts on the top of the metal spring, causing the metal spring to deform and then contact the second terminal, connecting the first and second terminals. During this process, because the metal spring deforms quickly and impacts the second terminal, the resulting vibration is transmitted to the supporting feet. The vibration is buffered and filtered by the top posts of the fixing block, thereby suppressing the vibration of the metal spring during deformation and thus reducing the noise when the switch is pressed, improving the user experience. Attached Figure Description

[0011] Figure 1 This is a structural view of the present invention.

[0012] Figure 2 This is a structural view of the base of this utility model.

[0013] Figure 3 This is an exploded structural view of the present invention.

[0014] Figure 4 This is a structural view of the metal spring sheet of this utility model.

[0015] Figure 5 This is a structural view of the cover plate of this utility model.

[0016] The diagram shows: base 1, first terminal 2, second terminal 3, cover plate 4, metal spring 5, button 6, handle 7, fixing block 8, top column 9, support foot 10, wear-resistant protrusion 11, fixing part 12, buckle 13, reinforcing buckle 14, side baffle 15. Detailed Implementation

[0017] 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.

[0018] Example 1:

[0019] This utility model provides a silent switch, including a base 1 with a first terminal 2 and a second terminal 3. A metal spring 5 and a button 6 are fixedly mounted on the base 1 via a cover plate 4. The button 6 is made of silicone and includes a handle 7 and a fixing block 8. Each of the four corners of the fixing block 8 has a top post 9. The metal spring 5 has four support feet 10, with the top posts 9 abutting against the tops of the support feet 10, which in turn contact the first terminal 2. The first terminal 2 has wear-resistant protrusions 11 corresponding to the support feet 10, and the support feet 10 contact these protrusions. The cover plate 4 is made of stainless steel. A fixing part 12 is provided on the side of the base 1, and the cover plate 4 has a buckle 13 with a reinforcing buckle 14. The cover plate 4 also has a side baffle 15.

[0020] Through the above technical solution, the button 6 of this utility model is made of silicone material, which reduces the sound when pressed. The metal spring 5 is provided with four support feet 10. At the same time, the fixing block 8 of the button 6 is provided with top posts 9 at the four corners. The top posts 9 abut against the top of the support feet 10. When the button 6 is pressed, the lower end of the handle 7 of the button 6 acts on the top of the metal spring 5, causing the metal spring 5 to deform and then contact the second terminal 3, so that the first terminal 2 and the second terminal 3 are connected. In this process, because the metal spring 5 deforms quickly, it impacts downward and contacts the second terminal 3. The vibration generated is transmitted to the support feet 10. The vibration is buffered and filtered by the top posts 9 of the fixing block 8, thereby suppressing the vibration when the metal spring 5 deforms, thus suppressing the sound when the switch is pressed and improving the user experience.

[0021] Example 2:

[0022] In this embodiment, the base 1 has a first terminal 2 and a second terminal 3. A cover plate 4 is fixedly installed on the base 1, encapsulating the metal spring 5 and the button 6 inside. The button 6 is made of silicone material, which has good elasticity and shock absorption performance. The button 6 includes two parts: a handle 7 and a fixing block 8. The fixing block 8 has a square structure, with upward-extending top posts 9 at each of its four corners. The metal spring 5 is located below the button 6 and has four support feet 10. The top of the support feet 10 abuts against the top posts 9 of the fixing block 8, and the bottom remains in contact with the first terminal 2 of the base 1.

[0023] When the user presses the handle 7 of button 6, the lower end of handle 7 applies downward pressure to the metal spring 5. Under pressure, the metal spring 5 undergoes elastic deformation, with its center bending downwards until it contacts the second terminal 3, thus establishing a circuit connection between the first terminal 2 and the second terminal 3. Due to the rapid deformation of the metal spring 5, vibration is generated upon contact with the second terminal 3. This vibration is transmitted to the top post 9 of the fixing block 8 through the four support feet 10 of the metal spring 5. The silicone top post 9 has good damping characteristics, effectively absorbing and buffering the vibration energy transmitted by the metal spring 5, thereby suppressing the noise generated by vibration.

[0024] When the pressing force is released, the metal spring 5 returns to its original shape due to its elasticity, separating from the second terminal 3, and the circuit is broken. Due to the buffering effect of the silicone top post 9, the vibration generated by the metal spring 5 during its recovery process is effectively suppressed, avoiding the "click" sound commonly found in traditional switches. Throughout the entire operation, the elastic deformation of the silicone button 6 and the buffering effect of the top post 9 together achieve a silent effect. Furthermore, the symmetrical arrangement of the four support feet 10 and the four top posts 9 ensures that the metal spring 5 is subjected to uniform force, further improving the stability and service life of the switch.

[0025] This silent switch is particularly suitable for applications requiring a quiet environment, such as automotive interiors, medical equipment installations, or offices. The silicone button 6 not only reduces operating noise but also provides a comfortable tactile feel. The contact pressure between the metal spring 5 and the terminal is precisely controlled through the cooperation of the support foot 10 and the top post 9, ensuring excellent electrical contact performance. The entire switch structure is simple and reliable, achieving a silent effect through optimized mechanical design, eliminating the need for additional noise reduction components and reducing production costs.

[0026] Example 3:

[0027] In this embodiment, a first terminal 2 and a second terminal 3 are fixedly installed on the base 1. A metal spring 5 and a silicone button 6 are fixedly installed on the base 1 via a cover plate 4. The silicone button 6 includes a handle 7 and a fixing block 8. Each of the four corners of the fixing block 8 has a top post 9. The metal spring 5 has four support feet 10. The top posts 9 abut against the top of the support feet 10, and the support feet 10 contact the first terminal 2. The first terminal 2 has wear-resistant protrusions 11 corresponding to the support feet 10, and the support feet 10 contact the wear-resistant protrusions 11.

[0028] In practice, the wear-resistant protrusion 11 is located in the contact area of ​​the first terminal 2, and its shape matches the contact surface of the support foot 10. When the button 6 is pressed, the lower end of the handle 7 acts on the top of the metal spring 5, causing the metal spring 5 to undergo elastic deformation. The four support feet 10 of the metal spring 5 slide on the wear-resistant protrusion 11 of the first terminal 2. Due to the presence of the wear-resistant protrusion 11, the friction between the support feet 10 and the first terminal 2 occurs on the surface of the wear-resistant protrusion 11, rather than in direct contact with the body of the first terminal 2. This structural design effectively avoids direct wear of the support feet 10 on the body of the first terminal 2.

[0029] During the deformation process, the supporting foot 10 of the metal spring 5 slides smoothly and steadily on the wear-resistant protrusion 11. When the metal spring 5 deforms to a certain extent, its center part contacts the second terminal 3, realizing the circuit conduction. Due to the setting of the wear-resistant protrusion 11, the frictional resistance between the supporting foot 10 and the first terminal 2 is reduced, and the scraping and wear of the supporting foot 10 on the body of the first terminal 2 is avoided. When the button 6 is released, the metal spring 5 returns to its original shape by its own elasticity, and the supporting foot 10 slides in the opposite direction on the wear-resistant protrusion 11. The friction is stable throughout the process.

[0030] The material selection for the wear-resistant protrusion 11 needs to consider both wear resistance and conductivity, and it is usually made of a conductive material with a hardness higher than that of the first terminal 2 body. The wear-resistant protrusion 11 can be fixed to the first terminal 2 by stamping, welding, or embedding. The contact surface between the support foot 10 and the wear-resistant protrusion 11 is specially treated to ensure stable contact resistance and a moderate coefficient of friction. This structural design not only extends the service life of the first terminal 2, but also maintains good electrical contact performance.

[0031] During long-term use of the switch, continuous friction between the support foot 10 and the wear-resistant protrusion 11 will cause the surface of the wear-resistant protrusion 11 to gradually wear down. However, since the wear-resistant protrusion 11 is a structure independent of the first terminal 2 body, when it wears to a certain extent, the wear-resistant protrusion 11 can be replaced separately without replacing the entire first terminal 2. This modular design greatly improves the maintainability and economy of the switch. At the same time, the wear of the wear-resistant protrusion 11 will not affect the structural integrity of the first terminal 2 body, ensuring the long-term reliable operation of the switch.

[0032] This embodiment effectively solves the wear problem caused by direct friction between the support foot 10 and the first terminal 2 by providing a wear-resistant protrusion 11 on the first terminal 2. The wear-resistant protrusion 11, as a consumable part, can be replaced individually, extending the overall service life of the switch. At the same time, this structural design maintains the original electrical performance and operating feel of the switch, achieving long-term reliable operation of the silent switch.

[0033] Example 4:

[0034] In this embodiment, the base 1 is provided with a first terminal 2 and a second terminal 3 for realizing the connection and disconnection of the circuit. The cover plate 4 is made of stainless steel and is fixed to the base 1 by fasteners to form the overall structure of the switch. The stainless steel cover plate 4 has high mechanical strength and corrosion resistance, which can effectively protect the internal components, while its good rigidity can suppress the transmission of vibration generated during switch operation.

[0035] Button 6 is made of silicone and consists of a handle 7 and a fixing block 8. Each of the four corners of the fixing block 8 has an upwardly extending top post 9, which directly contacts the top of the support foot 10 of the metal spring 5. The metal spring 5 has four support feet 10, which maintain contact with the first terminal 2 of the base 1. When an external force is applied to the handle 7 of button 6, the lower end of the handle 7 pushes the metal spring 5 to undergo elastic deformation.

[0036] During the pressing process, the silicone button 6 effectively absorbs some of the impact energy, reducing the noise generated during pressing. Simultaneously, the four support feet 10 of the metal spring 5 are evenly stressed by the four top posts 9 of the fixing block 8, making the deformation of the spring more stable. When the metal spring 5 deforms to a certain extent, its center will contact the second terminal 3, thereby achieving circuit continuity between the first terminal 2 and the second terminal 3.

[0037] Because the stainless steel cover plate 4 has high structural rigidity, it can effectively suppress the vibration generated when the metal spring 5 deforms and transmit it to the outside. At the same time, the cooperative design of the four support feet 10 and the four top posts 9 makes the impact force when the spring deforms evenly distributed, further reducing the vibration amplitude. When the external force is removed, the metal spring 5 returns to its original shape by its own elasticity, separates from the second terminal 3, and the circuit is broken.

[0038] In this embodiment, the stainless steel cover plate 4 not only provides excellent protection, but its rigidity also effectively suppresses internal vibration transmission. Working in conjunction with the silicone button 6 and the four-legged support structure, it achieves silent operation of the switch. This structural design is particularly suitable for noise-sensitive applications, such as automotive electronics.

[0039] Example 5:

[0040] In this embodiment, the base 1 is provided with a first terminal 2 and a second terminal 3, and the cover plate 4 is fixedly installed on the base 1 by a snap-fit ​​structure 13. The cover plate 4 is provided with snap-fit ​​13, and the side of the base 1 is provided with a fixing part 12 corresponding to the snap-fit ​​13. The snap-fit ​​13 and the fixing part 12 are snapped together to form a stable connection between the cover plate 4 and the base 1. The snap-fit ​​13 is provided with a reinforcing buckle 14 structure, which is a reinforcing rib structure protruding inward at the position of the snap-fit ​​13, which can effectively improve the connection strength and stability between the snap-fit ​​13 and the fixing part 12.

[0041] The silicone button 6 includes a handle 7 and a fixing block 8, with top posts 9 at each of the four corners of the fixing block 8. The metal spring 5 has four support feet 10, with the top of each support foot 10 abutting against the top posts 9 of the fixing block 8, and the lower end of each support foot 10 maintaining contact with the first terminal 2. When the button 6 is pressed, the lower end of the handle 7 acts on the top center of the metal spring 5, causing the metal spring 5 to undergo elastic deformation. During the deformation of the metal spring 5, its four support feet 10 evenly transmit the force to the fixing block 8 through the top posts 9; this multi-point support structure effectively disperses the impact force.

[0042] During the deformation of the metal spring 5, vibration occurs when the spring moves rapidly downward and contacts the second terminal 3. Since the metal spring 5 contacts the silicone top post 9 via four support legs 10, the damping properties of the silicone material effectively absorb and buffer the vibration energy. Simultaneously, the symmetrical arrangement of the four support legs 10 ensures that the vibration energy is evenly distributed, preventing localized concentrated vibration. The cover plate 4 and the base 1 are tightly fixed by a snap-fit ​​structure 13 with reinforcing buckles 14; this rigid connection further suppresses the propagation of vibration within the switch.

[0043] The special structure of the reinforcing buckle 14 enhances the connection rigidity between the buckle 13 and the fixing part 12, preventing micro-movements between the cover plate 4 and the base 1 due to vibration during button 6 operation. This stable connection structure, combined with the damping characteristics of the silicone button 6, effectively controls the noise of the switch operation. When the pressing pressure is released, the metal spring 5 returns to its original shape due to its own elasticity, separating from the second terminal 3, and the circuit is broken. Throughout the entire operation, the switch produces almost no audible noise because vibration is effectively suppressed.

[0044] Example 6:

[0045] In this embodiment, the base 1 is provided with a first terminal 2 and a second terminal 3 for realizing the circuit switching function. The cover plate 4 is fixedly installed on the base 1, encapsulating the metal spring 5 and the button 6 inside. The button 6 is made of silicone material, which has good elasticity and shock absorption performance. The button 6 consists of a handle 7 and a fixing block 8, with the fixing block 8 located at the lower part of the button 6.

[0046] Each of the four corners of the fixing block 8 has an upwardly protruding top post 9, which directly abuts against the top of the support foot 10 of the metal spring 5. The metal spring 5 has four support feet 10, the lower end of which is in contact with the first terminal 2 on the base 1. When the button 6 is pressed, the lower end of the handle 7 acts on the top center of the metal spring 5, causing the metal spring 5 to undergo elastic deformation. During the deformation process, the metal spring 5 bends downward and eventually contacts the second terminal 3, realizing the circuit connection between the first terminal 2 and the second terminal 3.

[0047] The cover plate 4 has symmetrical side baffles 15 on both sides, which extend downward from the main body of the cover plate 4 to form clamping spaces on both sides of the fixing block 8 for the button 6. The inner side of the side baffles 15 maintains an appropriate clearance fit with the two sides of the fixing block 8, allowing the button 6 to move freely in the vertical direction while effectively preventing the button 6 from shifting laterally or falling off during pressing. When the button 6 is subjected to lateral force, the side baffles 15 can provide reliable limiting support to ensure that the button 6 always remains in the correct working position.

[0048] During the release of button 6, the elastic restoring force of the metal spring 5 pushes button 6 back to its initial position. Due to the damping characteristics of the silicone material and the buffering effect of the top post 9 and the support foot 10, the entire reset process is smooth and quiet, without producing noticeable mechanical collision noise. The symmetrical arrangement of the four support feet 10 makes the force on the metal spring 5 more even, further reducing vibration and noise. The side baffle 15 not only improves the stability of button 6 but also avoids abnormal wear and noise problems caused by the tilting of button 6.

[0049] This silent switch achieves quiet operation through the shock-absorbing properties of the silicone button 6, the multi-point support structure of the metal spring 5, and the limiting protection of the side baffles 15 on the cover plate 4. It is particularly suitable for noise-sensitive applications such as automotive electronics, significantly improving the user experience. The entire switch structure is compact, with precise coordination of all components, effectively suppressing noise generated by mechanical movements while ensuring reliable electrical performance.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0051] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A silent switch, comprising a base, the base having a first terminal and a second terminal, wherein a metal spring and a button are fixedly mounted on the base via a cover plate, characterized in that, The button is made of silicone and includes a handle and a fixing block. The fixing block has a top post at each of its four corners. The metal spring has four supporting feet. The top post abuts against the top of the supporting foot, and the supporting foot contacts the first terminal. The first terminal is provided with a wear-resistant protrusion corresponding to the support foot, and the support foot contacts the wear-resistant protrusion; the cover plate is made of stainless steel; The base has a fixing part on its side, the cover plate has a buckle, and the buckle has a reinforcing buckle; The cover plate is equipped with side baffles.

Images