Ultra-compact integrated double tactile switch

Abstract

This utility model relates to the technical field of tactile switches and discloses an ultra-miniature integrated double-gang tactile switch. Its features include a plastic base, a cover plate bracket, and two switch buttons. The plastic base has two guide grooves, each with a circular groove segment in the center and outwardly expanding limiting groove segments on both sides. The cover plate bracket covers the top of the plastic base and has button holes corresponding to the two guide grooves, with the button holes communicating vertically with the guide grooves. The lower part of each switch button has a movable portion placed in the guide groove, the middle part of the switch button passes through the button hole to form a through-hole, and the upper part of the switch button is exposed above the button hole. The two sides of the movable portion are embedded in the limiting groove segments, and the bottom of the switch button is connected to an elastic structure. The limiting groove segments restrict the rotation and offset of the switch button, while the elastic structure lifts the switch button, maintaining it in a non-triggered state.

Description

Technical Field

[0001] This utility model relates to the technical field of tactile switches, and more specifically, to an ultra-miniature integrated double tactile switch. Background Technology

[0002] Ultra-miniature double-pole tactile switches are core control components in compact devices such as consumer electronics, portable smart devices, and networking equipment. In networking equipment, they are often used as Reset buttons and WPS buttons. In consumer electronics and portable smart devices, they are adapted to scenarios with internal structural space of less than 10mm, undertaking key operations such as circuit on / off and function switching. They are an important support for the miniaturization design of various compact devices.

[0003] In existing technologies, when dual-touch functionality needs to be implemented in small spaces, a separate combination of a heightened tactile switch and a regular tactile switch is typically used. However, this approach has drawbacks: firstly, the two switches need to be inserted separately during the manufacturing process, increasing labor and time costs and adding to the complexity of the process; secondly, the heightened tactile switch, due to its taller bracket, is prone to sagging and deformation of its button during assembly or use, while the regular tactile switch, limited by its size design and lacking a K-pin fixing structure, is prone to skewing and offset after assembly. Both can directly lead to quality problems such as button jamming and poor contact, seriously affecting the manufacturability and reliability of the product. Utility Model Content

[0004] The purpose of this invention is to provide an ultra-small integrated double-gang tactile switch, which aims to solve the problem of insufficient practicality of ultra-small double-gang tactile switches in the prior art.

[0005] This utility model is implemented as follows: an ultra-small integrated double-gang tactile switch includes a plastic base, a cover plate bracket, and two switch buttons. The plastic base has two guide grooves, each with a circular groove segment in the middle and outwardly expanding limiting groove segments on both sides. The cover plate bracket covers the top of the plastic base, and the cover plate bracket has button holes corresponding to the two guide grooves, with the button holes communicating vertically with the guide grooves. The lower part of the switch button has a movable part placed in the guide groove, the middle part of the switch button passes through the button hole to form a through part, the upper part of the switch button is exposed above the button hole, the two sides of the movable part are embedded in the limiting groove section, and the bottom of the switch button is connected to an elastic structure. The switch button's rotation and offset are restricted by the limiting groove, and the elastic structure lifts the switch button up.

[0006] Optionally, the radial dimension of the movable part is larger than the diameter of the button hole, and the radial dimension of the through part is adapted to the diameter of the button hole, so that the movable part cannot pass through the button hole, thereby achieving axial limiting of the switch button.

[0007] Optionally, the middle part of the movable part is cylindrical and is adapted to the circular groove segment; the two sides of the movable part are square and are adapted to the limiting groove segment, so as to limit the rotation and offset of the switch button.

[0008] Optionally, the elastic structure includes a spring sheet, which is disposed in a guide groove and abuts against the bottom of the switch button.

[0009] Optionally, the bottom of the switch button is provided with a downward-protruding pressure strip, which abuts against the upper surface of the spring sheet; when the switch button is pressed, pressure is transmitted to the spring sheet through the pressure strip.

[0010] Optionally, the bottom of the guide groove is provided with a downwardly recessed spring cavity, and a contact terminal is provided in the spring cavity. The spring is arranged in the spring cavity. When the switch button is pressed, the spring is subjected to pressure and makes contact with the contact terminal to conduct electricity. After being released, the spring returns to its original position.

[0011] Optionally, the spring is disposed at the top of the spring cavity, and the edge of the spring is positioned in contact with the inner wall of the spring cavity.

[0012] Optionally, the plastic base is provided with a terminal mounting groove, and a conductive terminal is installed in the terminal mounting groove, with the outer end of the conductive terminal extending to the outside of the plastic base.

[0013] Optionally, a connecting structure is provided between the cover plate bracket and the plastic base, and the cover plate bracket and the plastic base are detachably connected through the connecting structure.

[0014] Optionally, the connecting structure includes a strip groove and a fitting protrusion; the bottom of the plastic base is provided with the strip groove that is recessed upwards, and the two sides of the cover plate bracket extend downwards to form side sections. The side sections are connected with the fitting protrusions that extend laterally, and the fitting protrusions are embedded in the strip groove to achieve the snap-fit ​​fixation between the cover plate bracket and the plastic base.

[0015] Compared with existing technologies, the ultra-small integrated double tactile switch provided by this utility model eliminates the secondary insertion process of traditional split solutions through an integrated structural design, simplifying the manufacturing process and reducing costs. At the same time, the limit groove section restricts the rotation and offset of the switch button, and the elastic structure keeps the switch button upright, avoiding the problems of switch button drooping and tilting. It effectively solves the defects of button jamming and poor contact, improves the manufacturability and reliability of the product, and is suitable for electronic equipment scenarios with compact space. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the ultra-small integrated double tactile switch provided by this utility model; Figure 2 This is a cross-sectional schematic diagram of the ultra-small integrated double-gang tactile switch provided by this utility model; Figure 3 This is a cross-sectional schematic diagram of the ultra-small integrated double-gang tactile switch provided by this utility model; Figure 4 This is a schematic diagram of the structure of the cover plate bracket provided by this utility model; Figure 5 This is a bottom view of the ultra-small integrated double tactile switch provided by this utility model. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0018] The implementation of this utility model will be described in detail below with reference to specific embodiments.

[0019] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0020] Reference Figures 1-5 The image shown is a preferred embodiment of the present invention.

[0021] The ultra-small integrated double tactile switch provided by this utility model includes a plastic base 100, a cover plate bracket 200, and two switch buttons 300. The plastic base 100 is provided with two guide grooves 110, and the guide grooves 110 have a circular groove segment 111 in the middle. The circular groove segment 111 has outwardly expanding limiting groove segments 112 on both sides. The cover plate bracket 200 covers the top of the plastic base 100. The cover plate bracket 200 is provided with button holes 201 corresponding to the two guide grooves 110. The button holes 201 are vertically connected to the guide grooves 110. The lower part of the switch button 300 has a movable part 310 placed in the guide groove 110. The middle part of the switch button 300 passes through the button hole 201 to form a through part. The upper part of the switch button 300 is exposed above the button hole 201. The two sides of the movable part 310 are embedded in the limiting groove section 112. The bottom of the switch button 300 is connected to an elastic structure. The limit groove 112 restricts the rotation and offset of the switch button 300, and the elastic structure lifts the switch button 300.

[0022] The ultra-small integrated double tactile switch described above eliminates the secondary insertion process of traditional split solutions through its integrated structural design, simplifying the manufacturing process and reducing costs. At the same time, the limiting groove 112 restricts the rotation and offset of the switch button 300, and the elastic structure keeps the switch button 300 upright, avoiding the problems of switch button drooping and tilting. This effectively solves the defects of button jamming and poor contact, improves the manufacturability and reliability of the product, and is suitable for electronic equipment scenarios with limited space.

[0023] Specifically, the radial dimension of the movable part 310 is larger than the diameter of the key hole 201, and the radial dimension of the through part is adapted to the diameter of the key hole 201, preventing the movable part 310 from passing through the key hole 201 and achieving axial limitation of the switch button 300. In this way, a stepped limitation is formed by the size adaptation, and the movable part 310 and the edge of the key hole 201 form a blockage, effectively preventing the switch button 300 from falling off; no additional fixing parts are required, ensuring that it will not loosen during long-term use.

[0024] In this embodiment, the central part of the movable part 310 is cylindrical and matches the circular groove segment 111; the two side contours of the movable part 310 are square and match the limiting groove segment 112 to limit the rotation and offset of the switch button 300. In this way, the square contour limits the circumferential rotation of the switch button, making the pressing stroke consistent with the trigger position, and significantly improving the pressing accuracy.

[0025] The elastic structure includes a spring 500, which is disposed in the guide groove 110 and abuts against the bottom of the switch button 300. Thus, the spring 500 has good elasticity, fast response, and long lifespan, and can quickly reset the switch button; moreover, its structure is thin and light, occupying little space, adapting to ultra-small design requirements, simplifying assembly, and reducing costs.

[0026] Specifically, the spring 500 is made of phosphor bronze through precision stamping. The spring 500 has a lifespan of more than 100,000 cycles and has both circuit conduction and elastic reset functions. The spring 500 has a contact protrusion designed at the position corresponding to the switch button 300, which is linked with the switch button 300 to realize the circuit opening and closing and the switch button 300 rebound.

[0027] The cover plate bracket 200 is made of SPCC cold-rolled iron / brass material, and the material grade can be selected according to different cost requirements of the product.

[0028] The plastic base 100 is made of high-temperature resistant PPA plastic. The switch button can be selected according to different design lengths and is made of high-temperature resistant PPA plastic material. The length specifications can be selected as needed.

[0029] In this embodiment, the bottom of the switch button 300 is provided with a downwardly protruding pressure strip 320, which abuts against the upper surface of the spring sheet 500. When the switch button 300 is pressed, pressure is transmitted to the spring sheet 500 through the pressure strip 320. The pressure strip 320 can concentrate the pressing force, avoid pressure dispersion, cause the spring sheet 500 to deform in a specific direction, improve trigger sensitivity and consistency, and reduce fatigue damage to the spring sheet 500.

[0030] In this embodiment, the bottom of the guide groove 110 is provided with a downwardly recessed spring contact cavity 120, in which a contact terminal 600 is provided, and a spring contact 500 is disposed within the spring contact cavity 120. When the switch button 300 is pressed, the spring contact 500 is subjected to pressure and makes contact with the contact terminal 600 to conduct electricity. After being released, the spring contact 500 returns to its original position. In this way, the spring contact cavity 120 provides a fixed space for the spring contact 500 to move, preventing lateral displacement and ensuring precise contact between the spring contact 500 and the conductor terminal, thus ensuring a fast and stable circuit switching response.

[0031] Specifically, the spring 500 is positioned at the top of the spring cavity 120, and the edge of the spring 500 abuts against the inner wall of the spring cavity 120 for positioning. This multi-point positioning, achieved by the edge of the spring 500 abutting against the cavity wall, restricts the displacement of the spring 500 and improves its reliability.

[0032] The plastic base 100 includes a terminal mounting slot, in which a conductive terminal 400 is mounted. The outer end of the conductive terminal 400 extends to the outside of the plastic base 100. The conductive terminal 400 facilitates connection to external circuits, improving connection reliability and assembly efficiency.

[0033] The cover plate bracket 200 and the plastic base 100 are connected by a connecting structure, allowing for a detachable connection. This detachable design facilitates product assembly and subsequent maintenance, improving production efficiency and product yield.

[0034] Specifically, the connecting structure includes a strip groove 130 and a fitting protrusion 211. The bottom of the plastic base 100 has an upwardly recessed strip groove 130, and the two sides of the cover plate bracket 200 extend downward to form side sections 210. The side sections 210 are connected to the laterally extending fitting protrusions 211, which are embedded in the strip groove 130 to achieve a snap-fit ​​fixation between the cover plate bracket 200 and the plastic base 100. In this way, the fitting protrusions 211 and the strip groove 130 are precisely matched, the connection is firm and not easy to fall off, the operation is convenient, and the assembly and maintenance costs are reduced.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An ultra-miniature integrated double-pole tactile switch, characterized in that, The device includes a plastic base, a cover plate bracket, and two switch buttons. The plastic base has two guide grooves, each with a circular groove section in the middle and outwardly expanding limiting groove sections on both sides. The cover plate bracket covers the top of the plastic base and has button holes corresponding to the two guide grooves. The button holes are vertically connected to the guide grooves. The lower part of the switch button has a movable part placed in the guide groove, the middle part of the switch button passes through the button hole to form a through part, the upper part of the switch button is exposed above the button hole, the two sides of the movable part are embedded in the limiting groove section, and the bottom of the switch button is connected to an elastic structure. The switch button's rotation and offset are restricted by the limiting groove, and the elastic structure lifts the switch button up.

2. The ultra-miniature integrated double-gang tactile switch as described in claim 1, characterized in that, The radial dimension of the movable part is larger than the diameter of the button hole, and the radial dimension of the through part is adapted to the diameter of the button hole, so that the movable part cannot pass through the button hole, thereby achieving axial limiting of the switch button.

3. The ultra-miniature integrated double-gang tactile switch as described in claim 1, characterized in that, The middle part of the movable part is cylindrical and is adapted to the circular groove segment; the two sides of the movable part are square and are adapted to the limiting groove segment to limit the rotation and offset of the switch button.

4. The ultra-miniature integrated double-gang tactile switch as described in claim 1, characterized in that, The elastic structure includes a spring piece, which is disposed in a guide groove and abuts against the bottom of the switch button.

5. The ultra-miniature integrated double-gang tactile switch as described in claim 4, characterized in that, The bottom of the switch button is provided with a downward-protruding pressure strip, which abuts against the upper surface of the spring sheet; when the switch button is pressed, pressure is transmitted to the spring sheet through the pressure strip.

6. The ultra-miniature integrated double-pole tactile switch as described in claim 4, characterized in that, The bottom of the guide groove is provided with a downwardly recessed spring cavity, and a contact terminal is provided in the spring cavity. The spring is arranged in the spring cavity. When the switch button is pressed, the spring is subjected to pressure and makes contact with the contact terminal to conduct electricity. After the button is released, the spring returns to its original position.

7. The ultra-miniature integrated double-gang tactile switch as described in claim 6, characterized in that, The spring is positioned at the top of the spring cavity, and the edge of the spring is positioned against the inner wall of the spring cavity.

8. The ultra-miniature integrated double-gang tactile switch as described in claim 1, characterized in that, The plastic base is provided with a terminal mounting groove, and a conductive terminal is installed in the terminal mounting groove. The outer end of the conductive terminal extends to the outside of the plastic base.

9. The ultra-miniature integrated double-pole tactile switch as described in any one of claims 1 to 8, characterized in that, A connecting structure is provided between the cover plate bracket and the plastic base, and the cover plate bracket and the plastic base are detachably connected through the connecting structure.

10. The ultra-miniature integrated double-gang tactile switch as described in claim 9, characterized in that, The connecting structure includes a strip groove and a fitting protrusion; the bottom of the plastic base is provided with the strip groove that is recessed upwards, and the two sides of the cover plate bracket extend downwards to form side sections. The side sections are connected with the fitting protrusions that extend laterally. The fitting protrusions are embedded in the strip groove to achieve the snap-fit ​​fixation between the cover plate bracket and the plastic base.

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