Key switch

Abstract

The utility model provides a button switch, which comprises a shell, a fixed seat, PIN spring needles, a button spring, a button assembly and a conductor, the fixed seat is fixed at one end in the shell, at least two PIN spring needles are arranged on the fixed seat at intervals and extend into the shell, the button assembly is arranged in the shell in a sliding manner, and the conductor is arranged in the shell. The key spring is installed in the shell and abuts against the position between the key assembly and the fixing base so that one end of the key assembly can be exposed out of the shell, the conductor is installed at the end, located in the shell, of the key assembly, and the conductor corresponds to the positions of the PIN spring needles so that the key assembly can be pressed so that the conductor can make contact with the PIN spring needles to achieve conduction. According to the key switch provided by the utility model, through the built-in double springs, the stability of contact conduction during pressing is ensured, the springback speed is high, the possibility of jamming is low, the numerical value change of a contact resistance value is extremely small after long-time use, the key can be pressed downwards continuously under the condition of conduction, and the damage to the key switch caused by large-force impact is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of switches, in particular to a key switch. Background Art

[0002] At present, the same type of mechanical key switches on the market are connected by springs, which have a long contact time and the spring force decreases year by year, causing the risk of poor contact. In addition, the contact surfaces rub against each other during use, and the conductive layer of the contact surface is easily damaged after working for a long time, which increases the contact resistance and causes poor contact, thus affecting the change of the current passing value. Utility Model Content

[0003] In view of the above, the utility model provides a key switch, which ensures the stability of contact conduction when pressed through a built-in double spring, has a fast rebound speed, is not prone to jamming, and has a very small change in the contact resistance value after long-term use. When the key is conductive, the key can still be pressed down to avoid damage to the key switch caused by large force impact.

[0004] The technical solution of this utility model:

[0005] The utility model provides a key switch, comprising a shell, a fixing seat, a PIN spring needle, a key spring, a key assembly and a conductor. The fixing seat is fixed at one end in the shell, at least two PIN spring needles are installed on the fixing seat at intervals and extend into the shell, the key assembly is slidably arranged in the shell, the key spring is installed in the shell and abuts between the key assembly and the fixing seat, so that one end of the key assembly is exposed to the outside of the shell, and the conductor is installed on one end of the key assembly located in the shell, and the conductor corresponds to the position of the at least two PIN spring needles, so that the conductor contacts the at least two PIN spring needles to achieve conduction when the key assembly is pressed.

[0006] Further, the shell includes a tube body and a fixing block fixed to the outer periphery of the tube body, the fixing block is provided with a fixing hole for fixed installation, and the fixing seat, PIN spring needle, key spring, key assembly and conductor are all installed in the tube body; or,

[0007] The shell comprises a cylinder with external threads and two nuts threadedly connected to the cylinder.

[0008] Furthermore, the fixing seat is assembled in the tube body or the cylinder body by means of a clamping ring or a thread.

[0009] The utility model provides a key switch, comprising a shell, a fixing seat, a PIN spring needle, a key spring, a key assembly and a conductor. The shell comprises a first outer cylinder, a lug and a second outer cylinder. The lug is fixed to the outer periphery of the first outer cylinder. The first outer cylinder is screwed to the second outer cylinder. The fixing seat is screwed inside the second outer cylinder. At least two PIN spring needles are installed on the fixing seat at intervals and extend into the first outer cylinder. The key assembly is slidably installed in the first outer cylinder and the second outer cylinder. A limiting ring is provided inside the second outer cylinder. The key spring is supported between the key assembly and the limiting ring so that one end of the key assembly is exposed outside the first outer cylinder. The conductor is installed at one end of the key assembly located inside the first outer cylinder. The conductor corresponds to the positions of the at least two PIN spring needles so that the conductor contacts the at least two PIN spring needles to achieve conduction when the key assembly is pressed.

[0010] Furthermore, the fixing seat includes a fixing column and a guide column which are integrally connected, one end of the key spring is sleeved on the outer periphery of the guide column, and the fixing column and the guide column are provided with through holes for the PIN spring needle to pass through.

[0011] Furthermore, the PIN spring needle includes a needle tube, a needle head and a needle inner spring. The needle head can be slidably inserted into the needle tube. The needle inner spring is accommodated in the needle tube and is supported between the needle tube and the needle head to extend the needle head out of the needle tube.

[0012] Furthermore, the key assembly includes a keycap seat and a keycap, one end of the keycap is fixed on the keycap seat, and the conductor is installed on an end of the keycap seat away from the keycap.

[0013] Furthermore, it also includes a sealing ring, which is sleeved on the outer periphery of the keycap seat.

[0014] Furthermore, it also includes a sealant bonded to one end of the fixing seat.

[0015] Furthermore, it also includes a wire connected to the PIN spring pin.

[0016] Beneficial effects of the utility model:

[0017] The key switch provided by the utility model adopts a double spring structure design combining a key spring and a PIN spring pin, which can control the key pressing height and the conduction size requirements, ensuring that the key assembly can stably and reliably contact the PIN spring pin when pressed, thereby realizing the conduction of the circuit. This design not only improves the response speed, accuracy and stability of the switch, but also greatly reduces the failure rate caused by poor contact. More importantly, it can continue to press the key down when it is turned on, avoiding damage to the key switch caused by a large force impact, and the rebound speed is fast, and it is not easy to get stuck. The value of the contact resistance value changes very little after long-term use. The key switch of the utility model also has the advantages of simple structure and easy installation. Since the fixing seat is directly fixed inside the shell, the installation position of key components such as the PIN spring pin and the key assembly can be fixed, making the structure of the entire switch more compact and stable. At the same time, this design also facilitates the user's installation and maintenance, and reduces the cost of use.

[0018] The preferred implementation scheme of the utility model and its beneficial effects will be further described in detail in conjunction with specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the utility model and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the utility model, but should not constitute a limitation of the utility model.

[0020] Figure 1 It is a three-dimensional diagram of the first embodiment of the push button switch of the utility model;

[0021] Figure 2 It is a cross-sectional view of the first embodiment of the push button switch of the utility model;

[0022] Figure 3 This is an exploded view of the first embodiment of the push button switch of the utility model;

[0023] Figure 4 A perspective view of a second embodiment of the push button switch of the utility model;

[0024] Figure 5 A perspective view of a third embodiment of the push button switch of the utility model;

[0025] Figure 6 This is an exploded view of the third embodiment of the push button switch of the utility model;

[0026] Figure 7 It is a cross-sectional view of the third embodiment of the push button switch of the utility model.

[0027] Description of the accompanying drawings: shell 1, fixing seat 2, PIN spring needle 3, key spring 4, key assembly 5, conductor 6, tube body 11, fixing block 12, fixing column 21, guide column 22, keycap seat 51, keycap 52, sealing ring 7, sealant 8, wire 9, cylinder body 101, nut 102, first outer cylinder 111, lug 112, second outer cylinder 113. DETAILED DESCRIPTION

[0028] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0029] See also Figures 1 to 3 The utility model provides a key switch, comprising a housing 1, a fixing seat 2, a PIN spring pin 3, a key spring 4, a key assembly 5 and a conductor 6. The fixing seat 2 is fixed at one end of the housing 1, and at least two PIN spring pins 3 are installed on the fixing seat 2 at intervals and extend into the housing 1. The key assembly 5 is slidably arranged in the housing 1, and the key spring 4 is installed in the housing 1 and abuts between the key assembly 5 and the fixing seat 2, so that one end of the key assembly 5 is exposed outside the housing 1. The conductor 6 is installed on one end of the key assembly 5 located in the housing 1, and the conductor 6 corresponds to the position of the at least two PIN spring pins 3, so that the conductor 6 contacts the at least two PIN spring pins 3 to achieve conduction when the key assembly 5 is pressed.

[0030] The key switch provided by the utility model adopts a double spring structure design combining a key spring 4 with a PIN spring needle 3, which can control the key pressing height and the conduction size requirements, ensuring that the key assembly can stably and reliably contact the PIN spring needle when pressed, thereby realizing the conduction of the circuit. This design not only improves the response speed, accuracy and stability of the switch, but also greatly reduces the failure rate caused by poor contact. More importantly, it can continue to press the key down when it is turned on, avoiding damage to the key switch caused by a large force impact, and the rebound speed is fast, and it is not easy to get stuck. The value of the contact resistance value changes very little after long-term use. The key switch of the utility model also has the advantages of simple structure and easy installation. Since the fixing seat 2 is directly fixed to the inside of the housing 1, the installation positions of key components such as the PIN spring needle 3 and the key assembly 5 are fixed, making the structure of the entire switch more compact and stable. At the same time, this design also facilitates the user's installation and maintenance, and reduces the cost of use.

[0031] In this embodiment, the housing 1 includes a tube body 11 and a fixing block 12 fixed to the outer periphery of the tube body 11. The fixing block 12 is provided with fixing holes for fixing and installation. The fixing seat 2, the PIN spring pin 3, the key spring 4, the key assembly 5 and the conductor 6 are all installed in the tube body 11.

[0032] In this embodiment, the fixing seat 2 includes an integrally connected fixing column 21 and a guide column 22, the fixing column 21 is fixedly arranged in the tube body 11, and one end of the key spring 4 is sleeved on the outer periphery of the guide column 22. The fixing column 21 and the guide column 22 are provided with through holes for the PIN spring needle 3 to pass through. By designing a fixing seat 2 including an integrally connected fixing column 21 and a guide column 22, stable installation and flexible operation of the PIN spring needle 3 are achieved. The fixing column 21 is fixedly arranged in the tube body 11, ensuring the stability and reliability of the entire structure. At the same time, one end of the key spring 4 is sleeved on the outer periphery of the guide column 22, which not only simplifies the assembly process, but also enhances the compactness and integrity of the structure. The fixing seat 2 can be assembled in the tube body 11 using a retaining ring or a thread.

[0033] In this embodiment, the PIN spring needle 3 includes a needle tube, a needle head and a needle inner spring. The needle head can be slidably inserted into the needle tube. The needle inner spring is accommodated in the needle tube and abuts between the needle tube and the needle head to extend the needle head out of the needle tube. This has a simple structure and is easy to manufacture, and can realize smooth reciprocating sliding of the needle head in the needle head.

[0034] In this embodiment, the key assembly 5 includes a keycap seat 51 and a keycap 52. The keycap seat 51 is slidably mounted in the tube body 11. One end of the keycap 52 is fixed on the keycap seat 51, and the other end extends from one end of the tube body 11. The conductor 6 is installed on the end of the keycap seat 51 away from the keycap 52 by screws. The keycap seat 51 includes a seat body and a boss. One end of the keycap 52 is clamped on the boss and limited in the tube body 11.

[0035] In this embodiment, in order to improve the waterproof performance, the key switch provided by the utility model further includes a sealing ring 7, which is sleeved on the outer periphery of the base body of the key cap seat 51, and the outer peripheral surface of the sealing ring 7 is against the inner wall surface of the tube body 11.

[0036] In this embodiment, in order to improve the waterproof performance, the key switch provided by the utility model further includes a sealant 8 bonded to one end of the fixing base 2 .

[0037] In this embodiment, in order to facilitate the electrical connection of the PIN spring pin 3 , the key switch provided by the utility model further includes a wire 9 connected to the PIN spring pin 3 .

[0038] See also Figure 4 In another embodiment, different from the above embodiment, the housing 1 includes a cylinder 101 with external threads, and two nuts 102 screwed on the cylinder 101. The two nuts are clamped to achieve fixed installation. The remaining corresponding structures are the same as the above embodiment or adjusted accordingly, and will not be repeated here.

[0039] See also Figures 5 to 7In another embodiment, different from the above embodiment, the housing 1 includes a first outer cylinder 111, a lug 112 and a second outer cylinder 113. The lug 112 is fixed to the outer periphery of the first outer cylinder 111, the first outer cylinder 111 and the second outer cylinder 113 are screwed together, and the fixing seat 2 is screwed into the second outer cylinder 113. The key assembly 5 is slidably installed in the first outer cylinder 111. A limiting ring is provided in the second outer cylinder 113, and the key spring 4 is supported on the limiting ring. This structure is simple, easy to assemble, and has good structural strength. Specifically, the key switch includes a housing 1, a fixing seat 2, a PIN spring pin 3, a key spring 4, a key assembly 5 and a conductor 6. At least two PIN spring pins 3 are installed on the fixing seat 2 at intervals and extend into the first outer cylinder 111. The key spring 4 is installed in the first outer cylinder 111 and the second outer cylinder 113 and is supported between the limiting rings in the key assembly 5 and the second outer cylinder 113, so that one end of the key assembly 5 is exposed outside the first outer cylinder 111. The conductor 6 is installed at one end of the key assembly 5 located in the first outer tube 111, and the conductor 6 corresponds to the position of at least two PIN spring pins 3, so that the key assembly 5 is pressed so that the conductor 6 contacts at least two PIN spring pins 3 to achieve conduction. The remaining corresponding structures are the same as those in the above embodiment or adjusted accordingly, and will not be repeated here.

[0040] In the description of the present invention, it should be noted that the terms "upper", "lower", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying importance; the words "bottom surface" and "top surface", "inside" and "outside" refer to the geometric direction toward or away from a specific component, respectively.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the insides of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A key switch, characterized in that: The invention comprises a housing (1), a fixing seat (2), a PIN spring needle (3), a key spring (4), a key assembly (5) and a conductor (6); the fixing seat (2) is fixed at one end of the housing (1); at least two PIN spring needles (3) are installed on the fixing seat (2) at intervals and extend into the housing (1); the key assembly (5) is slidably arranged in the housing (1); the key spring (4) is installed in the housing (1) and abuts between the key assembly (5) and the fixing seat (2) so that one end of the key assembly (5) is exposed outside the housing (1); the conductor (6) is installed on one end of the key assembly (5) located in the housing (1); the conductor (6) corresponds to the position of the at least two PIN spring needles (3) so that the conductor (6) contacts the at least two PIN spring needles (3) when the key assembly (5) is pressed to achieve conduction.

2. The key switch according to claim 1, characterized in that: The housing (1) comprises a tube body (11) and a fixing block (12) fixed to the outer periphery of the tube body (11); a fixing hole is provided on the fixing block (12) for fixing and installation; a fixing seat (2), a PIN spring needle (3), a key spring (4), a key assembly (5) and a conductor (6) are all installed in the tube body (11); or, The housing (1) comprises a cylinder (101) provided with external threads, and two nuts (102) threadedly connected to the cylinder (101).

3. The key switch according to claim 2, characterized in that: The fixing seat (2) is assembled in the tube body (11) or the cylinder body (101) by means of a clamping ring or a thread.

4. A key switch, characterized in that: The invention comprises a housing (1), a fixing seat (2), a PIN spring needle (3), a key spring (4), a key assembly (5) and a conductor (6); the housing (1) comprises a first outer cylinder (111), a lug (112) and a second outer cylinder (113); the lug (112) is fixed to the outer periphery of the first outer cylinder (111); the first outer cylinder (111) and the second outer cylinder (113) are screwed together; the fixing seat (2) is screwed into the second outer cylinder (113); at least two PIN spring needles (3) are installed on the fixing seat (2) at intervals and extend into the first outer cylinder (111); the key assembly (5) is provided with a first outer cylinder (111) and a second outer cylinder (113); the first outer cylinder (111) and the second outer cylinder (113) are screwed together; the fixing seat (2) is screwed into the second outer cylinder (113); at least two PIN spring needles (3) are installed on the fixing seat (2) at intervals and extend into the first outer cylinder (111); the key assembly (5) is provided with a second outer cylinder (113) and a second outer cylinder (113); 5) is slidably mounted in the first outer tube (111) and the second outer tube (113), a limiting ring is provided in the second outer tube (113), a key spring (4) is held between the key assembly (5) and the limiting ring, so that one end of the key assembly (5) is exposed outside the first outer tube (111), a conductor (6) is mounted on one end of the key assembly (5) located in the first outer tube (111), the conductor (6) corresponds to the position of at least two PIN spring needles (3), so that the conductor (6) contacts at least two PIN spring needles (3) to achieve conduction when the key assembly (5) is pressed.

5. The key switch according to claim 1 or 4, characterized in that: The fixing seat (2) comprises a fixing column (21) and a guide column (22) which are integrally connected, one end of the key spring (4) is sleeved on the outer periphery of the guide column (22), and a through hole for the PIN spring needle (3) to pass through is provided on the fixing column (21) and the guide column (22).

6. The key switch according to claim 1 or 4, characterized in that: The PIN spring needle (3) comprises a needle tube, a needle head and a needle inner spring. The needle head can be slidably inserted into the needle tube. The needle inner spring is accommodated in the needle tube and abuts between the needle tube and the needle head so as to extend the needle head out of the needle tube.

7. The key switch according to claim 1 or 4, characterized in that: The key assembly (5) comprises a keycap seat (51) and a keycap (52), one end of the keycap (52) is fixed on the keycap seat (51), and the conductor (6) is installed on the end of the keycap seat (51) away from the keycap (52).

8. The key switch according to claim 7, characterized in that: It also includes a sealing ring (7), which is sleeved on the outer periphery of the key cap seat (51).

9. The key switch according to claim 1 or 4, characterized in that: It also includes a sealant (8) bonded to one end of the fixing seat (2).

10. The key switch according to claim 1 or 4, characterized in that: It also includes a wire (9) connected to the PIN spring needle (3).

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