Miniature touch switch

Abstract

The utility model relates to the technical field of electronic switches, in particular to a mini touch switch, which comprises a base main body, a conductive terminal is arranged in the base main body, the conductive terminal is in fit connection with an elastic sheet used for controlling conduction on-off, and the base main body is further provided with a button used for pressing the elastic sheet. A gasket used for preventing vaporized and volatilized rosin from entering is arranged between the button and the elastic piece, meanwhile, a first through hole is formed in the gasket, the button is provided with a protruding point corresponding to the first through hole, the protruding point of the button is arranged in the first through hole of the gasket in a sleeved mode, and when the button is pressed, the protruding point synchronously presses the elastic piece. Therefore, according to the mini touch switch, vaporized and volatilized rosin can be well prevented from entering the switch through the gasket, and the pressing effect of the button on the elastic sheet cannot be influenced.

Description

Technical fields:

[0001] This utility model relates to the field of electronic switch technology, and in particular to a miniature tactile switch. Background technology:

[0002] In the assembly of electronic devices, miniature tactile switches are a commonly used electronic component, widely applied in various button-type devices such as minicomputers, small computers, servers, remote controls, electronic toys, and small electronic instruments. These tactile switches typically feature small size, compact structure, and sensitive operation, enabling rapid switching on and off of circuits.

[0003] However, a tricky technical problem often arises when soldering miniature tactile switches to circuit boards. Currently, rosin is commonly used as a flux in the soldering process. Its main function is to remove the oxide layer on the metal surface and reduce surface tension, thereby ensuring the reliability and quality of the solder joint. During soldering, rosin vaporizes upon heating. This vaporized rosin can easily seep into the interior of the miniature tactile switch through the gaps around the button. If a significant amount of vaporized rosin enters, it may deposit on the internal surface of the miniature tactile switch, forming solid particle residues. This can cause blockages or jamming inside the miniature tactile switch, affecting its normal operation and use. This phenomenon not only reduces product reliability but may also lead to the malfunction of the entire electronic device, causing inconvenience to users.

[0004] Therefore, how to effectively prevent vaporized rosin from entering the miniature tactile switch during the welding process has become a pressing technical challenge. Utility model content:

[0005] The purpose of this invention is to provide a miniature tactile switch that can better prevent vaporized rosin from entering the interior, addressing the shortcomings of existing technologies.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A miniature tactile switch includes a base body with conductive terminals inside. A spring contact for controlling the on / off state of conductivity is attached to the conductive terminals. The base body also has a button for pressing the spring contact. A gasket for preventing vaporized rosin from entering is provided between the button and the spring contact. The gasket has a first through hole. The button has a protrusion corresponding to the first through hole, and the protrusion of the button fits into the first through hole of the gasket. When the button is pressed, the protrusion simultaneously presses the spring contact.

[0008] A further improvement to the above solution is that the base body has a button hole for mounting the button, and the gasket is tightly fitted into the button hole; wherein, the gasket includes a first circular body, the first through hole is a circular through hole and is located at the center of the first circular body, and the first circular body has a first extended side wing integrally formed on both sides; the button is provided with a second circular body corresponding to the first circular body, the protrusion is a cylinder and is located at the center of the second circular body, and the second circular body has a second extended side wing integrally formed on both sides corresponding to the first extended side wing; the second circular body and the second extended side wing of the button are respectively in close contact with the first circular body and the first extended side wing of the gasket.

[0009] A further improvement to the above solution is that the thickness of the gasket is 0.3-0.5 mm, and the gasket is made of high-temperature resistant LCP material.

[0010] A further improvement to the above solution is that the conductive terminal includes a conductive contact and a first pin for inserting into a circuit board. The first pin protrudes from the side of the base body near the circuit board, and the side of the base body near the circuit board has several grooves for accommodating solder.

[0011] A further improvement to the above scheme is that the conductive contacts of the conductive terminal and the surface of the first pin are both plated with gold or silver.

[0012] A further improvement to the above solution is that a receiving cavity is formed on the outside of the button, an LED light is disposed in the receiving cavity, and the LED light is connected to a conductive pin for electrical connection.

[0013] A further improvement to the above solution is that the miniature tactile switch is a side-press miniature tactile switch, a cover is fastened to the side of the base body, the cover has a second through hole for the receiving cavity of the button to protrude, and a second pin extending downward is provided at the bottom end of the cover; the second pin of the cover, the conductive pin of the LED light, and the first pin of the conductive terminal all protrude from the bottom end of the base body.

[0014] A further improvement to the above solution is that the base body includes a base and a middle base, the base and the middle base being interlocked; wherein, each of the four corners of the base is provided with a third through hole, the middle base is formed with protrusions that match the third through holes, and the four protrusions of the middle base are inserted into the four third through holes of the base; the button hole is located in the middle base, and the inner periphery of the button hole is formed with a step for abutting the gasket.

[0015] A further improvement to the above solution is that the base body and the button are made of insulating plastic material, while the cover, spring, conductive terminal, and conductive pin of the LED are all made of metal material.

[0016] A further improvement to the above scheme is that the length, width, and height of the base body are all 2-10 mm.

[0017] The beneficial effects of this invention are as follows: A gasket is provided between the button and the spring to prevent vaporized rosin from entering. Simultaneously, the gasket has a first through hole, and the button has a protrusion corresponding to the first through hole. The protrusion of the button fits into the first through hole of the gasket. When the button is pressed, the protrusion simultaneously presses the spring. Therefore, this miniature tactile switch not only effectively prevents vaporized rosin from entering the interior through the gasket, but also does not affect the button's pressing effect on the spring. Attached image description:

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another perspective.

[0020] Figure 3 This is a side view of the present invention.

[0021] Figure 4 for Figure 3 AA sectional view.

[0022] Figure 5 This is an exploded view of the present invention.

[0023] Figure 6 This is an exploded view of the button, gasket, and spring of this utility model.

[0024] Figure 7 This is a three-dimensional structural diagram of the middle seat of this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1—Base body, 10—Button hole, 101—Step, 11—Base, 111—Third through hole, 12—Middle seat, 121—Protrusion, 13—Groove, 2—Conductive terminal, 21—First pin, 3—Spring, 4—Button, 41—Protrusion, 42—Second circular body, 43—Second extended side wing, 44—Receiving cavity, 5—Gasket, 51—First through hole, 52—First circular body, 53—First extended side wing, 6—LED light, 61—Conductive pin, 7—Cover, 71—Second through hole, 72—Second pin. Detailed implementation method:

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] like Figures 1-7 As shown, in this embodiment, the miniature tactile switch of this utility model is a side-press type miniature tactile switch, which includes a base body 1. A conductive terminal 2 is disposed inside the base body 1. A spring contact 3 for controlling the on / off state of conductivity is attached to the conductive terminal 2. A button 4 for pressing the spring contact 3 is also installed on the base body 1. A gasket 5 is disposed between the button 4 and the spring contact 3 to prevent the entry of vaporized rosin. The gasket 5 has a first through hole 51, and the button 4 has a protrusion 41 corresponding to the first through hole 51.

[0029] In traditional miniature tactile switches, there are gaps around the button, allowing vaporized rosin to easily enter the interior. This invention addresses this by placing a gasket 5 between the button 4 and the spring 3 to seal these gaps, thus preventing vaporized rosin from entering. Simultaneously, through clever structural design, the protrusion 41 of the button 4 fits tightly into the first through-hole 51 of the gasket 5. When the button 4 is pressed, the protrusion 41 simultaneously presses the spring 3, ensuring the effective pressing of the button 4 against the spring 3.

[0030] Preferably, the base body 1 has a button hole 10 for mounting the button 4, and the gasket 5 is tightly fitted to the button hole 10 so that the gasket 5 can seal the button hole 10; wherein, the gasket 5 includes a first circular body 52, the first through hole 51 of the gasket 5 is a circular through hole and the first through hole 51 is located at the center of the first circular body 52, and the first circular body 52 has first extended side wings 53 integrally formed on both sides; the button 4 is provided with a second circular body 42 corresponding to the first circular body 52, the protrusion 41 of the button 4 is a cylinder and the protrusion 41 is located at the center of the second circular body 42, and the second circular body 42 has second extended side wings 43 integrally formed on both sides corresponding to the first extended side wings 53; the second circular body 42 and the second extended side wings 43 of the button 4 are respectively tightly attached to the first circular body 52 and the first extended side wings 53 of the gasket 5. The above structure ensures that the button 4 can accurately transmit pressure to the spring 3 during the pressing process, allowing the button 4 to press the spring 3 better, while also better preventing the vaporized rosin from entering the interior.

[0031] Preferably, the thickness of the gasket 5 is 0.3-0.5 mm, and the length, width, and height of the base body 1 are all 2-10 mm. These dimensions meet the miniaturization requirements of modern electronic devices while ensuring sufficient mechanical strength and structural stability. Furthermore, the gasket 5 is made of high-temperature resistant LCP (liquid crystal polymer) material, which not only has excellent high-temperature resistance but also good mechanical strength and chemical stability.

[0032] Preferably, the conductive terminal 2 includes conductive contacts and a first pin 21 for connecting to a circuit board. The first pin 21 protrudes from the side of the base body 1 closest to the circuit board, and the side of the base body 1 closest to the circuit board has several grooves 13 for accommodating solder. This structure allows excess solder protruding near the pin to be placed in the grooves 13 during soldering, preventing the excess solder from pushing up the base body 1. The surfaces of the conductive contacts and the first pin 21 of the conductive terminal 2 can be gold-plated or silver-plated, as gold and silver have excellent conductivity and corrosion resistance.

[0033] Preferably, the outer side of the button 4 is formed with a receiving cavity 44, and an LED light 6 is disposed within the receiving cavity 44. The LED light 6 is connected to a conductive pin 61 for electrical connection. This design enables the tactile switch of this application to not only have the traditional conductive on / off function, but also to realize status indication or backlight display function through the LED light 6. For example, in electronic devices, the LED light 6 can be used to indicate the on / off state, power status, or fault status of the switch, providing users with a more intuitive operating experience.

[0034] Preferably, a cover 7 is fastened to the side of the base body 1. The cover 7 has a second through hole 71 for the receiving cavity 44 of the button 4 to protrude. A second pin 72 extending downward is provided at the bottom end of the cover 7. The second pin 72 is also soldered to the circuit board to assist in fixation. Among them, the second pin 72 of the cover 7, the conductive pin 61 of the LED 6, and the first pin 21 of the conductive terminal 2 all protrude from the bottom end of the base body 1, so that the button 4 protrudes from the side of the base body 1, forming a side-press miniature tactile switch.

[0035] More specifically, the base body 1 includes a base 11 and a middle seat 12, which are interlocked. Each of the four corners of the base 11 has a third through hole 111, and the middle seat 12 has protrusions 121 that match the third through holes 111. The four protrusions 121 of the middle seat are inserted into the four third through holes 111 of the base 11. Thus, the base body 1 adopts a split structure of base 11 and middle seat 12, which are tightly interlocked, improving the structural stability of the base body 1 and facilitating assembly and production. The button hole 10 is located on the middle seat 12, and the inner periphery of the button hole 10 has a step 101 formed to abut against the gasket 5, further ensuring the stable installation of the gasket 5 and preventing displacement due to external force or vibration.

[0036] Preferably, the base body 1 and button 4 are made of insulating plastic material, while the cover 7, spring 3, conductive terminal 2, and conductive pin 61 of LED light 6 are all made of metal material. By rationally selecting materials, production costs are effectively controlled while ensuring high performance.

[0037] In summary, this utility model's miniature tactile switch, through a series of innovative structural designs and material selections, achieves functional effects such as preventing the entry of vaporized rosin, improving conductivity and corrosion resistance, integrating LED lighting functions, and meeting diverse operational needs. It also excels in miniaturization, cost control, and production efficiency, demonstrating broad application prospects and significant market competitiveness.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that any modifications or equivalent substitutions to the technical solutions of this utility model shall fall within the scope of protection of this utility model.

Claims

1. A miniature tactile switch, comprising a base body, wherein a conductive terminal is disposed inside the base body, and a spring contact for controlling the on / off state of conduction is attached to the conductive terminal; the base body is also equipped with a button for pressing the spring contact, characterized in that: A gasket is provided between the button and the spring sheet to prevent vaporized rosin from entering. The gasket has a first through hole, and the button has a protrusion corresponding to the first through hole. The protrusion of the button fits into the first through hole of the gasket. When the button is pressed, the protrusion presses the spring sheet simultaneously.

2. The miniature tactile switch according to claim 1, characterized in that: The base body has button holes for mounting the button, and the gasket is tightly fitted into the button holes. The gasket includes a first circular body, a first through hole located at the center of the first circular body, and first extended side wings integrally formed on both sides of the first circular body. The button has a second circular body corresponding to the first circular body, a cylindrical protrusion located at the center of the second circular body, and second extended side wings integrally formed on both sides of the second circular body corresponding to the first extended side wings. The second circular body and second extended side wings of the button are respectively in close contact with the first circular body and first extended side wings of the gasket.

3. The miniature tactile switch according to claim 1 or 2, characterized in that: The gasket has a thickness of 0.3-0.5 mm and is made of high-temperature resistant LCP material.

4. The miniature tactile switch according to claim 1 or 2, characterized in that: The conductive terminal includes a conductive contact and a first pin for inserting into a circuit board. The first pin protrudes from the side of the base body near the circuit board. The side of the base body near the circuit board has several grooves for accommodating solder.

5. The miniature tactile switch according to claim 4, characterized in that: The conductive contacts and the surface of the first pin of the conductive terminal are plated with gold or silver.

6. The miniature tactile switch according to claim 4, characterized in that: The button has a cavity formed on its outer side, and an LED light is disposed inside the cavity. The LED light is connected to a conductive pin for electrical connection.

7. The miniature tactile switch according to claim 6, characterized in that: The miniature tactile switch is a side-press type miniature tactile switch. A cover is fastened to the side of the base body. The cover has a second through hole for the receiving cavity of the button to protrude. A second pin extending downward is provided at the bottom end of the cover. The second pin of the cover, the conductive pin of the LED light, and the first pin of the conductive terminal all protrude from the bottom end of the base body.

8. The miniature tactile switch according to claim 2, characterized in that: The base body includes a base and a middle base, which are interlocked. Each of the four corners of the base has a third through hole, and the middle base has protrusions that match the third through holes. The four protrusions of the middle base are inserted into the four third through holes of the base. The button hole is located in the middle base, and the inner periphery of the button hole has a step for abutting the gasket.

9. The miniature tactile switch according to claim 7, characterized in that: The base body and button are made of insulating plastic material, while the cover, spring, conductive terminal, and conductive pin of the LED are made of metal material.

10. The miniature tactile switch according to claim 8, characterized in that: The length, width, and height of the base body are all 2-10 mm.

Images