High-durability switch assembly

Abstract

The utility model discloses a high-durability switch assembly, which comprises a shell, a PCB (printed circuit board), a metal dome, a spring and a button, an accommodating cavity is arranged in the shell, at least two contacts are arranged on the PCB, leads are led out from the contacts, the metal dome is arranged on the PCB, the button is in sliding connection with the shell, and the spring is arranged in the accommodating cavity. The spring is connected with the button and the shell, and the button acts on the metal dome. According to the utility model, the metal domes are connected with the contacts, and the durability of the switch is greatly improved by adopting a pressing mode. The guide part of the button is provided with the groove, so that the contact area with the guide hole is reduced, and the pressing reliability and smoothness of the button are further ensured. The guide block is arranged on the guide part, the movement range of the button is limited through the guide block, the button is notified and guided to move, and therefore it is guaranteed that the contact part is reliably pressed on the metal dome.

Description

Technical Field

[0001] The utility model relates to the field of switches, in particular to a high-durability switch component. Background Art

[0002] Existing push button switches adopt a peach heart structure, and realize electrical connection through the cooperation of fixed contact and moving contact. During use, the fixed contact and moving contact are constantly worn. When the wear reaches a certain extent, it will cause poor contact and failure of the switch, which cannot meet the high durability requirements. Utility Model Content

[0003] In view of the defects of the above-mentioned prior art, the main purpose of the present invention is to overcome the shortcomings of the prior art and discloses a highly durable switch assembly, including a shell, a PCB board, a pot piece, a spring and a button, a housing cavity is provided in the shell, at least two contacts are provided on the PCB board, and wires are led out of the contacts, the pot piece is provided on the PCB board, the button is slidably connected to the shell, the spring connects the button and the shell, and the button acts on the pot piece.

[0004] Furthermore, the shell includes a base plate, an end seat and an upper cover, the end seat is fixed to one end of the base plate, the upper cover is fixed to the base plate by clamping, and the end seat is provided with a guide hole passing through, and the guide hole is slidably matched with the button.

[0005] Furthermore, the button includes a pressing portion, a guide portion and a contact portion which are arranged in sequence.

[0006] Furthermore, the guide portion is a square strip structure.

[0007] Furthermore, a groove is axially provided in the guide hole.

[0008] Furthermore, the button further includes a guide block, the guide block is placed in the accommodating cavity, and the guide block is plugged into the guide portion.

[0009] Furthermore, first guide parts are protruded from the left and right sides of the guide block, and second guide parts are protruded from the upper and lower surfaces of the guide block.

[0010] Furthermore, the first guiding portion is a plane.

[0011] Furthermore, the second guiding portion is a circular protrusion arranged in an array.

[0012] Furthermore, a gap is provided between the button and the pot piece.

[0013] Beneficial effects achieved by this utility model:

[0014] This new design connects the contacts via a pot, employing a press-action mechanism, significantly increasing the durability of the switch. A groove is provided in the button's guide portion to reduce the contact area with the guide hole, thereby ensuring reliable and smooth button pressing. A guide block is provided on the guide portion to limit the button's range of movement, guiding its movement and ensuring that the contact portion is securely pressed against the pot. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of a high-durability switch assembly of the present utility model;

[0016] Figure 2 for Figure 1 sectional view of

[0017] Figure 3 This is a schematic diagram of the internal structure of a high-durability switch assembly of the present utility model;

[0018] Figure 4 Schematic diagram of the connection structure between the base plate and the end seat;

[0019] Figure 5 It is a structural diagram of the button;

[0020] The reference numerals are as follows:

[0021] 1. Housing, 2. PCB board, 3. Pot, 4. Spring, 5. Button, 6. Wire, 11. Bottom plate, 12. End seat, 3. Upper cover, 111. Buckle, 121. Guide hole, 122. Groove, 131. Slot, 51. Pressing part, 52. Guide part, 53. Contact part, 54. Guide block, 541. First guide part, 542. Second guide part. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] A high-durability switch assembly, such as Figure 1-Figure 5As shown, it includes a housing 1, a PCB board 2, a pot piece 3, a spring 4 and a button 5. A housing cavity is provided in the housing 1, and the PCB board 2 is placed in the housing cavity. At least two contacts are provided on the PCB board 2, and the contacts are led out through a wire 6. The number of contacts is determined by the number of lead-out wires. Usually, the number of contacts is two. The pot piece 3 is provided on the PCB board 2, and the contacts are connected through the pot piece 3 by pressing the pot piece 3, thereby making the circuit path. The button 5 is slidably connected to the housing 1, and the spring 4 connects the button 5 and the housing 1. The spring 4 provides a restoring force for the button 5 so that the button 5 returns to its initial position. The button 5 acts on the pot piece 3.

[0024] In one embodiment, if Figure 1-Figure 5 As shown, the housing 1 includes a base plate 11, an end base 12, and an upper cover 13. The end base 12 is fixed to one end of the base plate 11, and the upper cover 13 is fixed to the base plate 11 by snapping. The end base 12 is provided with a guide hole 121 extending therethrough, and the guide hole 121 slides with the button 5. Specifically, the base plate 11 has protruding buckles 111 on both sides, and the upper cover 13 has corresponding slots 131 provided at corresponding positions. During assembly, the upper cover 13 and the base plate 11 are assembled by the slots 131 and the buckles 111.

[0025] In one embodiment, if Figure 1-Figure 5 As shown, the button 5 includes a pressing portion 51, a guide portion 52, and a contact portion 53, which are arranged in sequence. The guide portion 52 cooperates with the guide hole 121 to guide the reciprocating movement of the button 5. The contact portion 53 presses the pot 3. The pressing portion 51 is located outside the housing 1 and is used for operator control.

[0026] In the above embodiment, if Figure 1-Figure 5 As shown, the guide portion 52 is a square strip structure, which can prevent the button from rotating; of course, the guide portion 52 can also be other structures, such as a polygonal strip structure, a circular strip structure, and an elliptical strip structure; when it is a circular strip structure, if the button 5 needs to stop rotating when used, a limiting groove or a limiting plane can be set on the side of the circular strip structure.

[0027] In one embodiment, if Figure 1-Figure 5 As shown, the guide hole 121 is circumferentially provided with a groove 122. The groove 122 can reduce the contact area between the guide portion 52 and the guide hole 121, thereby reducing the pressing resistance thereof.

[0028] In one embodiment, if Figure 1-Figure 5As shown, the button 5 also includes a guide block 54, which is placed in the accommodating cavity and plugged into the guide portion 52. The guide block 54 serves both as a guide and as a limiter. When the button 5 is assembled with the housing 1, the guide portion 52 is inserted through the guide hole 121, and the guide block 54 is installed to prevent the button 5 from separating from the housing 1. When pressed, the guide block 52 controls the end position, preventing damage to the pot 3 and the PCB board caused by excessive pressing. In addition, the guide block 54 cooperates with the accommodating cavity to guide the button.

[0029] In the above embodiment, if Figure 1-Figure 5 As shown, first guide portions 541 are protruded from the left and right sides of the guide block 54 , and second guide portions 542 are protruded from the upper and lower surfaces of the guide block 54 .

[0030] In one embodiment, if Figure 1-Figure 5 As shown, the first guide portion 541 is a plane.

[0031] In one embodiment, if Figure 1-Figure 5 As shown, the second guide portion 542 is a circular protrusion arranged in an array.

[0032] In the above embodiment, Figure 1-Figure 5 As shown, the first guide portion 541 and the second guide portion 542 reduce contact with the inner wall of the accommodating cavity, ensuring smooth movement of the guide block 54 .

[0033] In the above embodiment, if Figure 1-Figure 5 As shown, slots are formed on both side surfaces of the guide portion 52 and a notch is formed on the lower surface of the guide block 54. When the guide block 54 is assembled with the guide portion 52, the two side walls of the notch of the guide portion 52 are inserted into the slots.

[0034] In one embodiment, if Figure 1-Figure 5 As shown, a gap is set between the button 5 and the pot piece 3. This gap serves as an idle stroke. Since the effective stroke of the pot piece is short, the idle stroke of the button 5 is avoided by setting the gap.

[0035] When the utility model is in use, Figure 1-Figure 5 As shown, push the button 5, so that the contact portion 53 moves toward the pot piece 3, and at the same time the spring 4 is compressed until it is pressed into place, and the contact is connected through the pot piece 3. Release the button 5, the button is reset by the elastic force of the spring 4, and the pot piece 3 automatically resets.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Without departing from the spirit and scope of the present invention, modifications or equivalent replacements of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A highly durable switch assembly, characterized in that: The invention comprises a shell, a PCB board, a pot piece, a spring and a button. A accommodating cavity is provided in the shell. At least two contacts are provided on the PCB board, and wires are led out from the contacts. The pot piece is provided on the PCB board. The button is slidably connected to the shell. The spring connects the button and the shell. The button acts on the pot piece.

2. A highly durable switch assembly according to claim 1, characterized in that: The shell includes a base plate, an end seat and an upper cover. The end seat is fixed to one end of the base plate. The upper cover is fixed to the base plate by clamping. The end seat is provided with a guide hole passing through. The guide hole is slidably matched with the button.

3. The high-durability switch assembly according to claim 1, characterized in that: The button includes a pressing portion, a guide portion and a contact portion which are arranged in sequence.

4. A highly durable switch assembly according to claim 3, characterized in that: The guide portion is a square strip structure.

5. The high-durability switch assembly according to claim 2, characterized in that: The guide hole is axially concavely provided with a groove.

6. A highly durable switch assembly according to claim 4, characterized in that: The button further includes a guide block, which is placed in the accommodating cavity and plugged into the guide portion.

7. A highly durable switch assembly according to claim 6, characterized in that: The left and right sides of the guide block are provided with first guide parts, and the upper and lower surfaces of the guide block are provided with second guide parts.

8. The high-durability switch assembly according to claim 7, characterized in that: The first guide portion is a plane.

9. The high-durability switch assembly according to claim 7, characterized in that: The second guiding portions are circular protrusions arranged in an array.

10. The highly durable switch assembly according to claim 1, characterized in that: A gap is set between the button and the pot piece.

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