Touch switch assembly

Abstract

The utility model discloses a kind of touch switch assemblies, including base, PCB assembly and touch plate, the placing groove of accommodating PCB assembly is equipped on base, touch plate covers on placing groove, and light transmission pattern is equipped on touch plate, PCB assembly includes PCB board, lamp pearl and contact spring, limiting step extending to the mouth of placing groove is equipped on the inner wall of placing groove, cooperation end is equipped on touch plate with the limiting of limiting step, and gap exists between cooperation end and the outer wall of touch plate, the outer wall of touch plate and the outer wall of base smoothly transition, limiting step includes side wall and bottom wall, and clamping arm is equipped on bottom wall to the protrusion of touch plate, clamping arm is equipped with the clamping end of the protrusion to side wall on the side away from bottom wall, cooperation end is located between side wall and clamping arm, and limiting end is equipped on cooperation end with the limiting of clamping end, by the cooperation of clamping end and limiting end, it can prevent that the gap between touch plate and base is too large, convenient transportation, guarantee the trigger effect of touch switch in use process.

Description

Technical Field

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

[0002] Touch switches are widely used in production and daily life due to their simple structure and ease of operation. To facilitate identification of different operating states, touch switches typically include an indicator light assembly. A touch switch with an indicator light function usually includes a base, a PCB assembly, and a touch panel. The base has a slot to accommodate the PCB assembly, and the touch panel covers the slot. The PCB assembly includes a PCB board, LEDs mounted on the PCB board, and components such as springs electrically connected to the PCB board. To ensure stable triggering of the touch panel, the inner wall of the slot usually has a limiting step extending to the slot opening, and the touch panel has a mating end that can cooperate with the limiting step to form a limiting position.

[0003] Current touchpads lack a limiting structure to prevent them from detaching from the base. Typically, a limiting structure on the device itself prevents this. However, as the device ages, this limiting structure may loosen, creating a gap between the touchpad and the base. This prevents the touchpad from maintaining stable contact with the contact spring, thus affecting the touch switch's triggering effect. Summary of the Invention

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a touch switch assembly with a more stable indicator light triggering effect.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a touch switch assembly, including a base, a PCB assembly, and a touch panel. The base is provided with a placement groove for accommodating the PCB assembly. The touch panel covers the placement groove and has a light-transmitting pattern. The PCB assembly includes a PCB board, LED beads, and a contact spring. The inner wall of the placement groove is provided with a limiting step extending to the opening of the placement groove. The touch panel is provided with a mating end that forms a limiting position with the limiting step. There is a gap between the mating end and the outer wall of the touch panel. The outer wall of the touch panel smoothly transitions to the outer wall of the base. The limiting step includes a side wall and a bottom wall. The bottom wall is provided with a latching arm protruding towards the touch panel. The side of the latching arm away from the bottom wall is provided with a latching end protruding towards the side wall. The mating end is located between the side wall and the latching arm, and the mating end is provided with a limiting end that forms a limiting position with the latching end.

[0006] By adopting the above solution, the cooperation between the snap-fit ​​end and the limiting end can prevent the gap between the touch panel and the base from being too large, which facilitates transportation and ensures the triggering effect of the touch switch during use.

[0007] As a further feature of this invention, the snap-fit ​​arm is located at the edge of the bottom wall away from the side wall, and the surface of the snap-fit ​​arm facing away from the side wall smoothly transitions with the inner wall of the placement groove.

[0008] The above solution facilitates the installation of the PCB assembly into the placement slot.

[0009] As a further feature of this utility model, both the snap-fit ​​end and the mating end are annular, the limiting step is annular, and at least two plate-shaped snap-fit ​​arms are provided on the bottom wall. The distance between adjacent snap-fit ​​arms is consistent, and the distance between adjacent snap-fit ​​arms is less than the width of the snap-fit ​​arm along the extension direction of the limiting step.

[0010] By adopting the above scheme, the deformation and reset effect of the snap-fit ​​arm is guaranteed, and the limiting end is conveniently inserted between the snap-fit ​​arm and the side wall, ensuring that the snap-fit ​​end limits the limiting end.

[0011] As a further feature of this utility model, the mating end is in the shape of a square cylinder, the limiting end is in the shape of a square ring, the side wall is in the shape of a square cylinder, the bottom wall is in the shape of a square ring, and there are two snap-fit ​​arms arranged opposite each other, or there are four snap-fit ​​arms arranged opposite each other in pairs.

[0012] The above solution prevents relative rotation between the touchpad and the base, ensuring that the locking end limits the position of the limiting end.

[0013] As a further feature of this invention, when the touch panel abuts against the base, there is a gap between the mating end and the side wall, a gap between the mating end and the bottom wall, and a gap between the mating end and the snap-fit ​​arm.

[0014] The above solution facilitates the insertion of the mating end between the side wall and the snap-fit ​​arm.

[0015] As a further feature of this utility model, the touch panel has a raised end in the middle that protrudes away from the base, and a fixing groove is provided on the surface of the touch panel facing the base for inserting the end of the contact spring away from the PCB board. The fixing groove is arranged opposite to the raised end, and the light-transmitting pattern is located on the raised end.

[0016] Using the above design, the fixing groove prevents the contact spring from shifting laterally, and the raised end makes it easier for the operator to align the contact spring. In poor visibility conditions, the raised end also helps the operator confirm the position.

[0017] As a further feature of this invention, the fixing groove extends from the surface of the touch panel toward the base into the protruding end.

[0018] By adopting the above solution, the depth of the fixing groove is greater than the thickness of the touch panel, which further increases the lateral stability of the contact spring.

[0019] As a further feature of this utility model, the bottom of the fixing groove is provided with a spherical protrusion, the protrusion being smaller than a hemisphere, the contact spring surrounding the protrusion, the contact spring being a tower-shaped spring, and the outer diameter of the contact spring gradually increasing from the side closer to the PCB board to the side farther away from the PCB board.

[0020] Using the above scheme, the tower-shaped spring has advantages such as high load-bearing capacity, non-linear characteristic line, and good vibration damping effect. Preferably, the height of the protrusion protruding from the fixing groove is less than or equal to half the depth of the fixing groove.

[0021] The present invention will now be further described with reference to the accompanying drawings. Attached Figure Description

[0022] Appendix Figure 1 This is an exploded view of a specific embodiment of the present invention; Appendix Figure 2 This is a cross-sectional view of the touch panel and base in a specific embodiment of the present invention; Appendix Figure 3 For the appendix Figure 2 AA sectional view.

[0023] Base 1, placement slot 11, limiting step 12, side wall 121, bottom wall 122, snap-fit ​​arm 13, snap-fit ​​end 131, PCB assembly 2, PCB board 21, LED bead 22, contact spring 23, touch panel 3, light-transmitting pattern 31, mating end 32, limiting end 321, protruding end 33, fixing slot 34, protrusion 35. Detailed Implementation

[0024] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] In the description of this utility model, it should be noted that, unless otherwise specified, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are used only for the convenience of describing this utility model and simplifying the description. They 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] Specific embodiments of this utility model are shown in the accompanying drawings.

[0027] A touch switch assembly includes a base 1, a PCB assembly 2, and a touch panel 3. The base 1 has a placement groove 11 for accommodating the PCB assembly 2. The touch panel 3 covers the placement groove 11 and has a light-transmitting pattern 31. The PCB assembly 2 includes a PCB board 21, LED beads 22, and a contact spring 23. The inner wall of the placement groove 11 has a limiting step 12 extending to the opening of the groove 11. The touch panel 3 has a mating end 32 that forms a limiting position with the limiting step 12. There is a gap between end 32 and the outer wall of touchpad 3. The outer wall of touchpad 3 smoothly transitions with the outer wall of base 1. Limiting step 12 includes side wall 121 and bottom wall 122. The bottom wall 122 is provided with a latching arm 13 protruding towards touchpad 3. The side of latching arm 13 away from bottom wall 122 is provided with a latching end 131 protruding towards side wall 121. The mating end 32 is located between side wall 121 and latching arm 13, and the mating end 32 is provided with a limiting end 321 that limits the latching end 131. Through the cooperation of latching end 131 and limiting end 321, the gap between touchpad 3 and base 1 can be prevented from being too large, facilitating transportation and ensuring the triggering effect of touch switch during use.

[0028] The latch arm 13 is located at the edge of the bottom wall 122 away from the side wall 121, and the surface of the latch arm 13 facing away from the side wall 121 smoothly transitions with the inner wall of the placement slot 11. This facilitates the insertion of the PCB assembly 2 into the placement slot 11.

[0029] The side wall 121 is square cylindrical, the bottom wall 122 is square annular, the mating end 32 is square cylindrical, and the limiting end 321 is square annular. These shapes prevent relative rotation between the touchpad 3 and the base 1. In this embodiment, the bottom wall 122 has four sheet-like snap-fit ​​arms 13, arranged in pairs opposite each other. The distance between adjacent snap-fit ​​arms 13 is consistent, and the distance between adjacent snap-fit ​​arms 13 is less than the width of the snap-fit ​​arm 13 extending along the limiting step 12. This ensures the deformation and reset effect of the snap-fit ​​arms 13, facilitates the insertion of the limiting end 321 between the snap-fit ​​arm 13 and the side wall 121, and ensures the limiting end 131 limits the limiting end 321.

[0030] When the touchpad 3 abuts against the base 1, there are gaps between the mating end 32 and the side wall 121, between the mating end 32 and the bottom wall 122, and between the mating end 32 and the snap-fit ​​arm 13. This facilitates the insertion of the mating end 32 between the side wall 121 and the snap-fit ​​arm 13.

[0031] The touchpad 3 has a raised end 33 in the middle that protrudes away from the base 1. The surface of the touchpad 3 facing the base 1 has a fixing groove 34 for inserting the end of the contact spring 23 away from the PCB board 21. The fixing groove 34 is positioned opposite the raised end 33, and a light-transmitting pattern 31 is located on the raised end 33. The fixing groove 34 prevents the contact spring 23 from shifting laterally, and the raised end 33 facilitates the operator's alignment of the contact spring 23. In low-light conditions, the raised end 33 helps the operator confirm the position.

[0032] The fixing groove 34 extends from the surface of the touch panel 3 toward the base 1 into the protruding end 33. The depth of the fixing groove 34 is greater than the thickness of the touch panel 3, which further increases the lateral stability of the contact spring 23.

[0033] The bottom of the fixing groove 34 has a spherical protrusion 35, which is smaller than a hemisphere. A contact spring 23 surrounds the protrusion 35. The contact spring 23 is a tower-shaped spring, and its outer diameter gradually increases from the side closer to the PCB board 21 to the side farther away from the PCB board 21. The protrusion 35 facilitates the assembly of the contact spring 23. The tower-shaped spring has advantages such as high load-bearing capacity, non-linear characteristic curve, and good shock absorption. In this embodiment, the height of the protrusion 35 protruding from the fixing groove 34 is equal to half the depth of the fixing groove 34.

[0034] This utility model is not limited to the specific embodiments described above. Those skilled in the art can implement this utility model using other specific embodiments based on the content disclosed in this utility model. Any simple changes or modifications made to the design structure and concept of this utility model will fall within the protection scope of this utility model.

Claims

1. A touch switch assembly, comprising a base, a PCB assembly, and a touch panel, wherein the base has a placement groove for accommodating the PCB assembly, the touch panel covers the placement groove, the touch panel has a light-transmitting pattern, the PCB assembly includes a PCB board, LED beads, and a contact spring, the inner wall of the placement groove has a limiting step extending to the opening of the placement groove, the touch panel has a mating end that forms a limiting position with the limiting step, a gap exists between the mating end and the outer wall of the touch panel, and the outer wall of the touch panel smoothly transitions to the outer wall of the base, characterized in that: The limiting step includes a side wall and a bottom wall. The bottom wall is provided with a latching arm that protrudes toward the touch panel. The latching arm has a latching end that protrudes toward the side wall on the side away from the bottom wall. The mating end is located between the side wall and the latching arm, and the mating end is provided with a limiting end that forms a limiting position with the latching end.

2. The touch switch assembly according to claim 1, characterized in that: The snap-fit ​​arm is located at the edge of the bottom wall away from the side wall, and the face of the snap-fit ​​arm facing away from the side wall smoothly transitions to the inner wall of the placement groove.

3. A touch switch assembly according to claim 2, characterized in that: Both the snap-fit ​​end and the mating end are annular, the limiting step is annular, and at least two plate-shaped snap-fit ​​arms are provided on the bottom wall. The distance between adjacent snap-fit ​​arms is consistent, and the distance between adjacent snap-fit ​​arms is less than the width of the snap-fit ​​arm along the extension direction of the limiting step.

4. A touch switch assembly according to claim 3, characterized in that: The mating end is in the shape of a square cylinder, the limiting end is in the shape of a square ring, the side wall is in the shape of a square cylinder, the bottom wall is in the shape of a square ring, and there are two snap-fit ​​arms arranged opposite each other, or there are four snap-fit ​​arms arranged opposite each other in pairs.

5. A touch switch assembly according to claim 4, characterized in that: When the touchpad abuts against the base, there is a gap between the mating end and the side wall, a gap between the mating end and the bottom wall, and a gap between the mating end and the snap-fit ​​arm.

6. A touch switch assembly according to claim 5, characterized in that: The touchpad has a raised end in the middle that protrudes away from the base. The surface of the touchpad facing the base has a fixing groove for inserting the end of the contact spring away from the PCB board. The fixing groove is arranged opposite to the raised end, and the light-transmitting pattern is located on the raised end.

7. A touch switch assembly according to claim 6, characterized in that: The fixing groove extends from the surface of the touch panel toward the base into the protruding end.

8. A touch switch assembly according to claim 7, characterized in that: The bottom of the fixing groove is provided with a spherical protrusion, which is smaller than a hemisphere. The contact spring surrounds the protrusion and is a tower-shaped spring. The outer diameter of the contact spring gradually increases from the side closer to the PCB board to the side farther away from the PCB board.

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