Button switch
By designing the extension on the pins of the push button switch and increasing the contact area, the problem of poor stability of the traditional push button switch pins is solved, and the reliability of placing more electronic components on a small PCB is improved.
Patent Information
- Application Number
- CN202421400028.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-19
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-19
AI Technical Summary
The pins of traditional push-button switches have poor stability on the base, resulting in reliability issues when placing more electronic components on small PCBs.
A push button switch is designed with a pin extension that extends from one end area near the edge of the base surface to the other end area, increasing the contact area and thereby improving the stability of the pin.
By increasing the contact area of the pin, the stability of the pin on the base is significantly improved, ensuring reliability when placing more electronic components on a small PCB.
Smart Images
Figure CN222672862U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of push button switches, in particular to a push button switch. Background Art
[0002] Fig. 9 The figure shows the internal structure of a traditional push button switch.
[0003] Fig. 9 The size of the push button switch is between ±15mm. Currently, the size of this push button switch needs to be controlled between ±7mm. The advantage is that more electronic components can be placed under the same size PCB.
[0004] Since the pin 100 is fixed at one end at the midpoint of the base near the edge, when the base and the pin are reduced in size, the stability of the pin on the base is relatively poor. Utility Model Content
[0005] In order to solve the above problems, the utility model provides a push button switch, aiming to solve the problem of poor stability of the pin on the base.
[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a push button switch, comprising a base, a rotating lifting mechanism, a conductive sheet, and a pin, the base having a cavity with an opening facing upward, the rotating lifting mechanism being located in the cavity, pushing the conductive sheet out of the cavity, and driving the conductive sheet to rotate to abut against the pin provided on the opening, characterized in that the pin has an extension portion, which extends from one end area of the base surface close to the edge to the other end area of the base surface close to the edge.
[0007] Beneficial effects of the utility model:
[0008] The extension part covers one side of the base surface close to the edge. Compared with the fixed position of the pin on the base in the prior art, the extension part brings a larger contact area and can improve the stability of the pin on the base.
[0009] Furthermore, a local area of the extension portion extends above the cavity, and the conductive sheet located below the extension portion alternately separates from and contacts the extension portion through lifting and rotating motions.
[0010] Furthermore, the lifting and rotating motion is composed of an upper cover, a spring, a button, and a cam. The inner circumferential surface of the upper cover is provided with a plurality of guide rails distributed in a vertical array. The guide rails match the vertical lifting and lowering motion of the button in the upper cover. Specifically, a slot key provided on the circumferential surface of the button slides in the guide rail, and an outer circumferential surface of the cam is provided with a convex portion opposite to the slot key. The convex portion, the slot key, and the guide rail are distributed in a circular array with the same center. The slot key and the convex portion have mutually meshing helical teeth. A guiding surface inclined in the same direction as the slot key is provided between the guide rails. Mutually meshing serrations are provided between the top surface of the cam and the bottom surface of the button, and the tooth top angle of the serrations of the button is located in the guide rail.
[0011] Furthermore, the ratio of the number of the protrusion, the slot key, and the guide rail is 1:1:2.
[0012] Furthermore, the conductive sheet is in a cross structure.
[0013] Furthermore, the pins are provided in a plurality of groups, and the pins in each group share a same extension portion.
[0014] Furthermore, the end of the pin is bent and then extends outward.
[0015] Furthermore, a first notch structure and a second notch structure are provided on the extension portion. The first notch structure adapts to the circumference of the button to avoid interference with the button. The second notch structure is adjacent to the first notch structure and is used to avoid contact with the conductive sheet. The conductive sheet has a length extending to the bottom of the first notch structure.
[0016] Furthermore, the upper cover is fixed on the base.
[0017] Furthermore, a convex point is provided on the base, and a positioning hole is provided on the extension portion and is sleeved on the convex point, and the positioning hole is sleeved on the convex point. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is an explosion schematic diagram of the utility model.
[0019] Figure 2 It is a three-dimensional diagram of the cam.
[0020] Figure 3 This is a schematic diagram of the installation of the pins and the base.
[0021] Figure 4 It is the use state process diagram (I) of the utility model.
[0022] Figure 5 It is the use state process diagram (two) of the utility model.
[0023] Figure 6 It is the use state process diagram (three) of the utility model.
[0024] Figure 7 This is the use state process diagram (IV) of the utility model.
[0025] Figure 8 It is a three-dimensional diagram of the upper cover.
[0026] Fig. 9 A perspective view of the prior art. DETAILED DESCRIPTION
[0027] See also Figure 1-8 As shown, a push button switch includes a base 1, a spring (not shown in the figure), a button 3, a cam 4, a pin 5, a conductive sheet 6, and an upper cover 7.
[0028] A cavity with an opening upward is provided in the central area of the surface of the base 1, so that the conductive sheet 6 can move up and down and rotate in the cavity; the pin 5 has an extension portion 51, and the extension portion 51 extends from one end area of the surface of the base 1 close to the edge to the other end area of the surface of the base 1 close to the edge, so that the extension portion 51 is located between the upper cover 7 and the base 1 in a clamped state; it is not difficult to see that the extension portion 51 covers one side of the surface of the base 1 close to the edge, and compared with the fixed position of the pin 5 on the base 1 in the prior art, the extension portion 51 brings a larger contact area to improve the stability of the pin 5 on the base 1.
[0029] A local area of the extension portion 51 extends above the cavity, and the conductive sheet 6 located below the extension portion 51 alternately separates from and contacts the extension portion 51 through lifting and rotating motions.
[0030] This lifting and rotating motion is composed of an upper cover 7, a spring, a button 3, and a cam 4. The inner circumference of the upper cover 7 is provided with a plurality of guide rails 71 distributed in a vertical array. The guide rail 71 is matched with the vertical lifting motion of the button 3 in the upper cover 7. Specifically, the slot key 31 provided on the circumference of the button 3 slides in the guide rail 71. The outer circumference of the cam 4 is provided with a convex portion 41 opposite to the slot key 31. The number ratio of the convex portion 41, the slot key 31, and the guide rail 71 is 1:1:2, and the number of the convex portion 41, the slot key 31, and the guide rail 71 are all distributed in a circular array with the same center. When the button 3 switch disconnects the current, the slot key 31 and the convex portion 41 are located in the same guide rail 71. Due to the existence of the slot key 31, the position of the convex portion 41 is partially located in the guide rail 71, and the spring connected to the bottom of the cam 4 is squeezed. The groove key 31 and the protrusion 41 have mutually meshing helical teeth, and a guide surface 73 inclined in the same direction as the groove key 31 is provided between the guide rails 71 and the guide rails 71. In the process of switching from separation to contact, the button 3 presses down the cam 4. When the cam 4 is disengaged from the restriction of the guide rail 71, the force of the spring causes the protrusion 41 to rotate on the groove key 31, and a relative relationship is formed between the rotated protrusion 41 and the guide surface 73. After the protrusion 41 contacts the guide surface 73, the protrusion 41 rotates a second time and enters the adjacent guide rail 71. At this time, there is no groove key 31 in the adjacent guide rail 71. Under the action of the elastic force, the protrusion 41 moves into the guide rail 71 and stops after the conductive sheet 6 abuts against the pin 5, thereby completing the switching from separation to contact.
[0031] In addition, mutually meshing saw teeth 8 are provided between the top surface of the cam 4 and the bottom surface of the button 3. The tooth top angle of the saw teeth 8 of the button 3 is located within the guide rail 71. Under the constraint of the guide rail 71, the convex portion 41 on the side surface adjacent to the tooth surface of the saw teeth 8 of the cam 4, when in the contact state, the tooth top angles on the button 3 and the cam 4 are against each other's inclined surfaces; when the button 3 is pressed again, the inclined surfaces between the saw teeth 8 form a guiding effect, and the cam 4 is rotated in combination with the spring, thereby completing the switching from contact to separation.
[0032] This switching method of controlling closing and conducting has the characteristics of simple structure and high precision.
[0033] The conductive sheet 6 is in a cross structure, and the conductive sheet 6 rotates by 45° each time, so the conductive sheet 6 can contact and separate from the extension portion 51 in alternating moments.
[0034] There are multiple groups of pins 5 , and the pins 5 in each group share the same extension portion 51 . By obtaining more use of the pins 5 , the stability of the utility model can be significantly improved.
[0035] In this embodiment, two groups of pins 5 are provided.
[0036] The end of pin 5 is bent and extended outward, which has the advantage of increasing more area for soldering and improving the connection stability with the PCB board.
[0037] The extension portion 51 is provided with a first notch structure 53 and a second notch structure 52. The first notch structure 53 is adapted to the circumference of the button 3 to avoid interference with the button 3. The second notch structure 52 is adjacent to the first notch structure 53. The second notch structure 52 is used to avoid contact with the conductive sheet 6. The conductive sheet 6 has a length extending to the bottom of the first notch structure 53.
[0038] Furthermore, the upper cover 7 is fixed on the base 1 .
[0039] Furthermore, the base 1 is provided with a protrusion (not shown in the figure), and the extension part 51 has a positioning hole 52 which is sleeved on the protrusion. The positioning hole 52 is sleeved on the protrusion, so that the extension part 51 can be quickly assembled on the base 1.
[0040] A guide column 74 is provided at the bottom of the upper cover 7. The guide column 74 passes through the base 1 and is tightly connected to the upper cover 7 and the base through a buffer block 72 extending outward from the bottom thereof. In addition, the buffer block 72 can be used to alleviate the impact force of the downward pressing action.
[0041] The above implementation modes are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field shall fall within the protection scope determined by the claims of the present invention.
Claims
1. A push button switch, comprising a base, a rotating lifting mechanism, a conductive sheet, and a pin, wherein the base has a cavity with an opening upward, the rotating lifting mechanism is located in the cavity, pushes the conductive sheet out of the cavity, and drives the conductive sheet to rotate to abut against the pin provided on the opening, characterized in that: The pin has an extension portion, which extends from one end region of the base surface close to the edge to the other end region of the base surface close to the edge.
2. A push button switch according to claim 1, characterized in that: A local area of the extension portion extends above the cavity, and the conductive sheet located below the extension portion alternately separates from and contacts the extension portion through lifting and rotating motions.
3. A push button switch according to claim 2, characterized in that: The lifting and rotating motion is composed of an upper cover, a spring, a button, and a cam. The inner circumference of the upper cover is provided with a plurality of guide rails distributed in a vertical array. The guide rails match the vertical lifting motion of the button in the upper cover. Specifically, a slot key provided on the circumference of the button slides in the guide rail, and the outer circumference of the cam is provided with a convex portion opposite to the slot key. The convex portion, the slot key, and the guide rail are distributed in a circular array with the same center. The slot key and the convex portion have mutually meshing helical teeth. A guiding surface inclined in the same direction as the slot key is provided between the guide rails. Mutually meshing serrations are provided between the top surface of the cam and the bottom surface of the button, and the tooth top angle of the serration of the button is located in the guide rail.
4. A push button switch according to claim 3, characterized in that: The ratio of the number of protrusions, slot keys and guide rails is 1:1:
2.
5. A push button switch according to claim 1, characterized in that: The conductive sheet is in a cross structure.
6. A push button switch according to claim 1, characterized in that: The pins are arranged in a plurality of groups, and the pins in each group share a common extension portion.
7. A push button switch according to any one of claims 1 to 6, characterized in that: The ends of the pins are bent and extended outward.
8. A push button switch according to claim 1, characterized in that: The extension portion is provided with a first notch structure and a second notch structure. The first notch structure adapts to the circumference of the button to avoid interference with the button. The second notch structure is adjacent to the first notch structure and is used to avoid contact with the conductive sheet. The conductive sheet has a length extending to the bottom of the first notch structure.
9. A push button switch according to claim 1, characterized in that: The upper cover is fixed on the base.
10. A push button switch according to claim 1, characterized in that: The base is provided with a convex point, the extension part is provided with a positioning hole which is sleeved on the convex point, and the positioning hole is sleeved on the convex point.