A spring type trigger switch

Abstract

The utility model relates to the technical field of trigger switch, concretely relates to a spring type trigger switch, including circuit board and the shell of being located at the top of circuit board, the sealed cavity is formed between the shell and circuit board, the first conductive area is equipped with in the sealed cavity length direction one end of circuit board, the second conductive area is equipped with in the sealed cavity length direction other end of circuit board, the conductive spring is equipped with in the sealed cavity along the length direction, the connecting portion is equipped with in the length direction one end of the conductive spring, the trigger portion is equipped with in the length direction other end of the conductive spring, the conductive piece is equipped with in the length direction one end of the sealed cavity, the connecting portion passes through the conductive piece and is electrically connected with the first conductive area, the trigger portion is located at the top of the second conductive area, the utility model discloses the deformation design of conductive spring, triggers on when spring type trigger switch is subjected to external force, and the switch is excellent in switch on effect, has the advantages of compact structure, small space occupation and low cost.

Description

Technical Field

[0001] This utility model relates to the field of trigger switch technology, specifically to a spring-type trigger switch. Background Technology

[0002] In the field of trigger switch technology, existing triggering devices mainly include mechanical push-button switches, ball-type trigger switches, and mercury switches. Among them, mechanical push-button switches rely on physical pressing to achieve on / off switching, which has the problems of large size and the need to reserve space for pressing, making it difficult to adapt to the assembly requirements of miniaturized electronic devices (such as micro sensors and smart wearable devices); moreover, its triggering direction is not restricted, which cannot meet the precise control requirements of unidirectional triggering in specific scenarios.

[0003] Ball-type trigger switches achieve conductivity by having internal balls roll and contact the conductive terminals. However, they have poor sealing properties and are susceptible to dust and moisture, leading to poor contact, short service life, and difficulty in adapting to humid or dusty environments (such as bathroom electronic devices and outdoor sensors). Furthermore, their trigger sensitivity is difficult to adjust, making it hard to match the varying trigger force requirements of different circuits.

[0004] While mercury switches can achieve angle-triggered operation, mercury is toxic and does not meet environmental regulations, leading to their gradual elimination from the market. Furthermore, most existing trigger switches require manual soldering and assembly, making them incompatible with SMT (Surface Mount Technology) production lines, resulting in low production efficiency and high mass production costs.

[0005] In summary, existing technologies suffer from problems such as large size, poor sealing, short lifespan, insufficient environmental friendliness, inability to accurately trigger in one direction, and low production efficiency. There is an urgent need for a unidirectional trigger switch that is compact, reliably sealed, environmentally friendly, and compatible with automated production. Utility Model Content

[0006] The purpose of this invention is to address the aforementioned shortcomings in the prior art by providing a spring-type trigger switch.

[0007] The objective of this utility model is achieved through the following technical solution: a spring-type trigger switch, comprising a circuit board and a housing disposed on the top of the circuit board; a sealed cavity is formed between the housing and the circuit board; a first conductive area is provided at one end of the circuit board along the length of the sealed cavity; and a second conductive area is provided at the other end of the circuit board along the length of the sealed cavity. A conductive spring is provided along the length direction inside the sealed cavity; a connecting part is provided at one end of the conductive spring along the length direction; a trigger part is provided at the other end of the conductive spring along the length direction; a conductive element is provided at one end of the sealed cavity along the length direction; the connecting part is electrically connected to the first conductive area through the conductive element; the trigger part is located at the top of the second conductive area; a gap is provided between the trigger part and the second conductive area.

[0008] The present invention is further configured such that both the first conductive region and the second conductive region are copper foil.

[0009] The present invention is further provided with black adhesive at the connection between the outer shell and the circuit board.

[0010] The present invention is further configured such that the outer shell is an iron shell.

[0011] The present invention is further configured such that the conductive component is conductive silver paste.

[0012] The present invention is further configured such that the conductive silver paste has an arc-shaped groove in the middle; the connecting part is fixed to the arc-shaped groove; the bottom of the conductive silver paste is fixed to the circuit board; the top of the conductive silver paste is fixed to the outer shell; and the bottom of the conductive silver paste is in contact with the first conductive area.

[0013] The present invention is further configured such that the length direction of the circuit board, the length direction of the outer shell, and the length direction of the conductive spring are arranged in parallel.

[0014] The present invention is further configured such that mounting grooves are provided at both ends of the circuit board along its length.

[0015] The beneficial effects of this utility model are as follows: This utility model, through the deformation design of the conductive spring, triggers the switch to conduct when the spring-type trigger switch is subjected to external force, resulting in excellent switch conduction effect. It has the advantages of compact structure, small space occupation and low cost. Attached Figure Description

[0016] Fig. 1 This is a schematic diagram of the structure of this utility model; Fig. 2 This is a cross-sectional view of the present invention; Fig. 3 This is a cross-sectional view of the present invention from another perspective; Fig. 4 This is an exploded view of the structure of this utility model; Among them: 1. Circuit board; 11. First conductive area; 12. Second conductive area; 13. Black glue; 14. Mounting groove; 2. Housing; 21. Sealing cavity; 3. Conductive spring; 31. Connecting part; 32. Triggering part; 33. Gap; 4. Conductive component; 41. Arc groove. Detailed Implementation

[0017] The present invention will be further described in conjunction with the following embodiments.

[0018] Depend on Figs. 1 to 4As can be seen, the spring-type trigger switch described in this embodiment includes a circuit board 1 and a housing 2 disposed on the top of the circuit board 1; a sealed cavity 21 is formed between the housing 2 and the circuit board 1; a first conductive area 11 is provided at one end of the length direction of the sealed cavity 21 on the circuit board 1; a second conductive area 12 is provided at the other end of the length direction of the sealed cavity 21 on the circuit board 1. A conductive spring 3 is provided in the sealed cavity 21 along its length; a connecting part 31 is provided at one end of the conductive spring 3 along its length; a trigger part 32 is provided at the other end of the conductive spring 3 along its length; a conductive element 4 is provided at one end of the sealed cavity 21 along its length; the connecting part 31 is electrically connected to the first conductive area 11 through the conductive element 4; the trigger part 32 is located at the top of the second conductive area 12; a gap 33 is provided between the trigger part 32 and the second conductive area 12.

[0019] Specifically, in this embodiment, the spring-type trigger switch, when not subjected to external force, has the conductive spring 3 in a naturally extended state, and a preset gap 33 is maintained between its trigger part 32 and the second conductive area 12. The size of the gap 33 can be designed according to the actual trigger sensitivity requirements. At this time, the current cannot form a path through the first conductive area 11-conductive silver paste-conductive spring 3-second conductive area 12, and the switch as a whole is in an open-circuit OFF state.

[0020] When the spring-type trigger switch is subjected to an external force, such as vibration or centrifugal force generated by movement, and the external force reaches a set threshold, the conductive spring 3 undergoes directional deformation due to inertia, and its trigger part 32 bends towards the second conductive area 12 and comes into contact with the second conductive area 12. At this time, the current is sequentially conducted through the first conductive area 11, the conductive silver paste, the connecting part 31 of the conductive spring 3, and the trigger part 32 of the conductive spring 3 to the second conductive area 12, forming a closed circuit, and the switch is in the ON state.

[0021] When the external force disappears, the conductive spring 3 returns to its natural extended state due to its own elasticity, the trigger part 32 separates from the second conductive area 12, the gap 33 is re-formed, the current conduction is interrupted, and the switch returns to the open circuit OFF state.

[0022] This embodiment utilizes the deformation design of the conductive spring 3 to trigger the switch when it is subjected to external force, resulting in excellent switch conduction performance. It also features a compact structure, small footprint, and low cost.

[0023] In this embodiment, a spring-triggered switch is described, in which both the first conductive area 11 and the second conductive area 12 are made of copper foil. Copper foil has excellent conductivity, and as the material for the first conductive area 11 and the second conductive area 12, it can ensure stable current transmission when the switch is turned on, reducing signal loss or delay. At the same time, copper foil has strong adhesion to the circuit board 1, making it easy to etch and form on the surface of the circuit board 1, suitable for mass production processes, and its cost is lower than that of precious metal conductive materials such as gold and silver, which can reduce the overall manufacturing cost.

[0024] In this embodiment, a spring-type trigger switch is provided with black adhesive 13 at the connection between the housing 2 and the circuit board 1. The black adhesive 13 has good sealing and adhesion properties, forming a sealing layer at the connection between the housing 2 and the circuit board 1. This isolates the internal sealed cavity 21 from the external environment, effectively preventing the intrusion of dust, moisture, etc., and avoiding poor contact problems caused by moisture or impurities in the conductive spring 3, the first conductive area 11, and the second conductive area 12. This significantly improves the switch's environmental adaptability and service life. Simultaneously, the adhesive effect of the black adhesive 13 enhances the connection strength between the housing 2 and the circuit board 1, preventing them from separating under external impact.

[0025] The spring-type trigger switch described in this embodiment has an outer casing 2 made of iron. The iron casing has high structural strength, providing robust protection for the internal conductive spring 3, the first conductive area 11, and the second conductive area 12, resisting damage to the internal structure from external impacts or compression. Furthermore, as a conductive material, iron, in conjunction with the sealed cavity 21, forms a certain electromagnetic shielding effect, reducing the influence of external electromagnetic interference on the switch's conduction signal and improving the switch's operational stability in complex electromagnetic environments.

[0026] In this embodiment, a spring-type trigger switch is described, wherein the conductive component 4 is conductive silver paste. The conductive silver paste possesses both conductivity and adhesion properties. Serving as the conductive medium between the connecting part 31 and the first conductive area 11, it achieves both electrical connection between the two and, through adhesion, fixes the connecting part 31 of the conductive spring 3 within the sealed cavity 21, preventing the spring from detaching due to vibration or deformation. Compared to traditional metal soldering methods, the curing process of conductive silver paste is simpler and will not damage the circuit board 1 or the spring due to high-temperature soldering.

[0027] This embodiment describes a spring-type trigger switch. The conductive silver paste has an arc-shaped groove 41 in the middle. The connecting part 31 is fixed to the arc-shaped groove 41. The bottom of the conductive silver paste is fixed to the circuit board 1. The top of the conductive silver paste is fixed to the outer casing 2. The bottom of the conductive silver paste contacts the first conductive area 11. The arc-shaped groove 41 in the middle of the conductive silver paste matches the shape of the connecting part 31 of the conductive spring 3. The connecting part 31 can be fixed through a combination of physical fitting and adhesive force, ensuring that the connecting part 31 does not shift when the spring deforms, thus guaranteeing the stability of the conductive path. Simultaneously, the fixing method of connecting the bottom of the conductive silver paste to the circuit board 1 and the top of the conductive silver paste to the outer casing 2 forms a mechanically linked structure between the outer casing 2, the circuit board 1, and the conductive spring 3, enhancing the overall impact resistance. Furthermore, the direct contact between the bottom and the first conductive area 11 minimizes contact resistance.

[0028] In this embodiment, a spring-type trigger switch is provided, wherein the length directions of the circuit board 1, the housing 2, and the conductive spring 3 are arranged parallel to each other. This arrangement ensures a stable and reliable overall structure.

[0029] This embodiment describes a spring-type trigger switch, in which mounting slots 14 are provided at both ends of the circuit board 1 along its length. The mounting slots 14 can cooperate with positioning posts or snap-fit ​​structures of external devices such as motherboards to achieve rapid positioning of the switch during assembly, ensuring accurate installation. Simultaneously, this design is compatible with the automated gripping and assembly processes of SMT production lines, reducing manual intervention, improving batch production efficiency, and the positioned mounting structure enhances the connection between the switch and the equipment, preventing loosening or displacement due to vibration during use.

[0030] Furthermore, this embodiment can adopt a surface mount design, with mounting slots 14 at both ends of the circuit board 1, allowing direct assembly via an SMT placement machine without requiring additional operating space, thus reducing the size and meeting the miniaturization requirements of microelectronic devices. Moreover, this embodiment has fewer structural components and is compatible with automated SMT production lines, effectively improving production efficiency and reducing mass production costs compared to traditional hand-soldered switches.

[0031] 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 modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A spring-type trigger switch, characterized in that: The device includes a circuit board (1) and a housing (2) disposed on the top of the circuit board (1); a sealed cavity (21) is formed between the housing (2) and the circuit board (1); the circuit board (1) has a first conductive area (11) at one end of the sealed cavity (21) along its length; the circuit board (1) has a second conductive area (12) at the other end of the sealed cavity (21) along its length. A conductive spring (3) is provided in the sealed cavity (21) along its length direction; a connecting part (31) is provided at one end of the conductive spring (3) along its length direction; a trigger part (32) is provided at the other end of the conductive spring (3) along its length direction; a conductive element (4) is provided at one end of the sealed cavity (21) along its length direction; the connecting part (31) is electrically connected to the first conductive area (11) through the conductive element (4); the trigger part (32) is located at the top of the second conductive area (12); a gap (33) is provided between the trigger part (32) and the second conductive area (12).

2. A spring-type trigger switch according to claim 1, characterized in that: Both the first conductive region (11) and the second conductive region (12) are copper foil.

3. A spring-type trigger switch according to claim 1, characterized in that: Black adhesive (13) is provided at the connection between the outer casing (2) and the circuit board (1).

4. A spring-type trigger switch according to claim 1, characterized in that: The outer shell (2) is an iron shell.

5. A spring-type trigger switch according to claim 1, characterized in that: The conductive component (4) is conductive silver paste.

6. A spring-type trigger switch according to claim 5, characterized in that: The conductive silver paste has an arc-shaped groove (41) in the middle; the connecting part (31) is fixed to the arc-shaped groove (41); the bottom of the conductive silver paste is fixed to the circuit board (1); the top of the conductive silver paste is fixed to the outer shell (2); the bottom of the conductive silver paste is in contact with the first conductive area (11).

7. A spring-type trigger switch according to claim 1, characterized in that: The circuit board (1) is arranged in parallel along its length, the outer casing (2) is arranged in parallel along its length, and the conductive spring (3) is arranged in parallel along its length.

8. A spring-type trigger switch according to claim 1, characterized in that: The circuit board (1) has mounting grooves (14) at both ends along its length.

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