Self-locking mechanical switch

Abstract

The utility model discloses a self -locking mechanical switch, including the wiring holder, the wiring holder surface fixedly connected with the casing, the casing inboard wall fixedly connected with the fixed cover, the fixed cover inboard wall slidingly connected with the movable cover, the fixed cover top end threadedly connected with the knob, and the knob bottom wall and movable cover top end abut, the inboard wall slidingly connected with the abutment piece of wiring holder, and the abutment piece and movable cover bottom fixed link, the abutment piece lower surface fixedly connected with the movable frame, the movable frame inboard wall fixedly connected with the transverse board, and the transverse board both ends all fixedly connected with the movable contact, the utility model discloses the sliding cooperation of fixed cover and movable cover, the elastic support of reset spring, ensure that switch action is accurate, reduce the risk of poor contact, and the state of circuit on-off can be realized by single operation, need not continuously press, improve the operation convenience, and movable contact and fixed contact touch directly through mechanical force, and the stable conductive contact area reduces the contact resistance, reduces the heating.

Description

Technical Field

[0001] This utility model relates to the field of mechanical switch technology, specifically a self-locking mechanical switch. Background Technology

[0002] In the field of mechanical control, traditional mechanical switches often suffer from the following problems: some switches require continuous external force to maintain their conductive state, making them prone to accidental circuit disconnection due to accidental contact or the disappearance of external force; while some switches possess self-locking functions, their complex structures (such as multiple sets of gears or electromagnetic locking) not only increase manufacturing costs but also make them susceptible to self-locking failure due to component wear. Therefore, those skilled in the art have provided a self-locking mechanical switch to solve the problems mentioned in the background section. Utility Model Content

[0003] The purpose of this invention is to provide a self-locking mechanical switch to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A self-locking mechanical switch includes a terminal block, a housing fixedly connected to the surface of the terminal block, a fixed sleeve fixedly connected to the inner wall of the housing, a movable sleeve slidably connected to the inner wall of the fixed sleeve, a knob threadedly connected to the top of the fixed sleeve, and the bottom wall of the knob abutting against the top of the movable sleeve, an abutting block slidably connected to the inner wall of the terminal block, and the abutting block fixedly connected to the bottom end of the movable sleeve, a movable frame fixedly connected to the lower surface of the abutting block, a horizontal plate fixedly connected to the inner wall of the movable frame, and moving contacts fixedly connected to both ends of the horizontal plate.

[0006] Furthermore, a first return spring is fixedly connected between the inner wall of the fixed sleeve and the outer wall of the movable sleeve, and the first return spring is used to reset the movable sleeve.

[0007] Furthermore, a second reset spring is fixedly connected to the bottom wall of the inner cavity of the terminal block, and the top end of the second reset spring abuts against the bottom end of the movable frame.

[0008] Furthermore, a terminal block is fixedly connected inside the terminal block, and a fixed contact is fixedly connected to the upper surface of the terminal block.

[0009] Furthermore, the moving contact comes into contact with the fixed contact when it moves.

[0010] By adopting the above technical solution

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. Through the sliding fit between the fixed sleeve and the movable sleeve, and the elastic support of the reset spring, the switch action is ensured to be accurate, reducing the risk of poor contact. The circuit can be maintained in a single operation without continuous pressing, which improves the convenience of operation. The moving contact and the fixed contact are directly touched by mechanical force, which stabilizes the conductive contact area, reduces contact resistance, and reduces heat generation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a self-locking mechanical switch;

[0014] Figure 2 A cross-sectional view of a self-locking mechanical switch;

[0015] Figure 3 This is a schematic diagram of the internal structure of the terminal block in a self-locking mechanical switch;

[0016] Figure 4 This is a schematic diagram of the planar structure of the terminal block in a self-locking mechanical switch.

[0017] In the diagram: 1. Terminal block; 2. Housing; 3. Fixed sleeve; 4. Knob; 5. Movable sleeve; 6. First return spring; 7. Abutment block; 8. Second return spring; 9. Movable frame; 10. Horizontal plate; 11. Moving contact; 12. Terminal block; 13. Fixed contact. Detailed Implementation

[0018] To make the technical means, creative features, achieved objectives and effects of this utility model easier to understand, the present utility model is further described below in conjunction with specific embodiments. In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0019] Please see Figures 1-4This utility model provides an embodiment of a self-locking mechanical switch, including a terminal block 1, a housing 2 fixedly connected to the surface of the terminal block 1, a fixed sleeve 3 fixedly connected to the inner wall of the housing 2, a movable sleeve 5 slidably connected to the inner wall of the fixed sleeve 3, a knob 4 threadedly connected to the top of the fixed sleeve 3, and the bottom wall of the knob 4 abutting against the top of the movable sleeve 5, an abutting block 7 slidably connected to the inner wall of the terminal block 1, and the abutting block 7 fixedly connected to the bottom end of the movable sleeve 5, a movable frame 9 fixedly connected to the lower surface of the abutting block 7, a horizontal plate 10 fixedly connected to the inner wall of the movable frame 9, and movable contacts 11 fixedly connected to both ends of the horizontal plate 10, and a fixed sleeve... A first return spring 6 is fixedly connected between the inner wall of the 3rd side and the outer wall of the movable sleeve 5. The first return spring 6 is used to reset the movable sleeve 5. A second return spring 8 is fixedly connected to the bottom wall of the inner cavity of the terminal block 1. The top of the second return spring 8 abuts against the bottom of the movable frame 9. A terminal block 12 is also fixedly connected inside the terminal block 1. A fixed contact 13 is fixedly connected to the upper surface of the terminal block 12. The moving contact 11 contacts the fixed contact 13 when moving. The first return spring 6 provides a certain resistance during the rotation of the knob 4 to increase the feel and stability of the operation. When the knob 4 is rotated, the knob 4 presses down on the movable sleeve 5, forcing The movable sleeve 5 slides downward along the inner wall of the fixed sleeve 3, simultaneously compressing the first return spring 6. The movable sleeve 5 drives the bottom abutment block 7 to move downward in sync, thereby pushing the movable frame 9 and the horizontal plate 10 downward. This causes the moving contacts 11 at both ends of the horizontal plate 10 to contact the fixed contacts 13 on the terminal block 12, thus completing the circuit. The rotation of the knob 4 is converted into pressing and lifting motions on the moving contacts 11. Combined with the self-locking characteristic of the screw rotation, the movable sleeve 5 remains stably in its current position after rotation stops, ensuring continuous contact between the moving and fixed contacts 13. When the knob 4 is rotated again, the self-locking state is released, and the first return spring 6 and the second return spring 7 release their contact. The spring 8 (acting on the movable sleeve 5 and the movable frame 9 respectively) generates an upward elastic force, pushing the movable sleeve 5, the abutment block 7, the movable frame 9 and the horizontal plate 10 to reset. The moving contact 11 separates from the fixed contact 13, the circuit is broken, and one on-off cycle is completed. Through the sliding cooperation between the fixed sleeve 3 and the movable sleeve 5 and the elastic support of the reset spring, the switch action is ensured to be accurate, reducing the risk of poor contact. The circuit on-off state can be maintained with a single operation without continuous pressing, which improves the convenience of operation. The moving contact 11 and the fixed contact 13 are in direct contact by mechanical force, the conductive contact area is stable, the contact resistance is reduced, and the heat generation is reduced.

[0020] The first return spring 6 provides a certain resistance during the rotation of the knob 4 to increase the feel and stability of the operation. When the knob 4 is rotated, the knob 4 presses down on the movable sleeve 5, forcing the movable sleeve 5 to slide down along the inner wall of the fixed sleeve 3, while compressing the first return spring 6. The movable sleeve 5 drives the bottom abutment block 7 to move down synchronously, thereby pushing the movable frame 9 and the horizontal plate 10 to move down, so that the moving contacts 11 at both ends of the horizontal plate 10 contact the fixed contacts 13 on the terminal block 12, realizing the circuit conduction. The rotation of the knob 4 is converted into the pressing and lifting motion of the moving contact 11. With the self-locking characteristic of the screw rotation, it remains stably in the current position after the rotation stops, so that the moving and fixed contacts 13 continue to contact. When the knob 4 is rotated again, the self-locking state is released, and the first return spring 6 and the second return spring 8 (acting on the movable sleeve 5 and the movable frame 9 respectively) generate an upward elastic force, pushing the movable sleeve 5, the abutment block 7, the movable frame 9 and the horizontal plate 10 to reset. The moving contact 11 separates from the fixed contact 13, the circuit is broken, and one on-off cycle is completed.

[0021] The sliding fit between the fixed sleeve 3 and the movable sleeve 5, along with the elastic support of the reset spring, ensures precise switch operation, reduces the risk of poor contact, and allows the circuit to remain open or closed with a single operation without continuous pressing, thus improving ease of operation. The moving contact 11 and the fixed contact 13 are in direct contact through mechanical force, resulting in a stable conductive contact area, reduced contact resistance, and reduced heat generation.

[0022] This specification describes embodiments, but not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A self-locking mechanical switch, characterized in that, The device includes a terminal block (1), a housing (2) is fixedly connected to the surface of the terminal block (1), a fixed sleeve (3) is fixedly connected to the inner wall of the housing (2), a movable sleeve (5) is slidably connected to the inner wall of the fixed sleeve (3), a knob (4) is threadedly connected to the top of the fixed sleeve (3), and the bottom wall of the knob (4) abuts against the top of the movable sleeve (5). An abutting block (7) is slidably connected to the inner wall of the terminal block (1), and the abutting block (7) is fixedly connected to the bottom of the movable sleeve (5). A movable frame (9) is fixedly connected to the lower surface of the abutting block (7), and a horizontal plate (10) is fixedly connected to the inner wall of the movable frame (9). Moving contacts (11) are fixedly connected to both ends of the horizontal plate (10).

2. The self-locking mechanical switch according to claim 1, characterized in that, A first return spring (6) is fixedly connected between the inner wall of the fixed sleeve (3) and the outer wall of the movable sleeve (5). The first return spring (6) is used to reset the movable sleeve (5).

3. A self-locking mechanical switch according to claim 1, characterized in that, The bottom wall of the inner cavity of the terminal block (1) is fixedly connected to a second reset spring (8), and the top end of the second reset spring (8) abuts against the bottom end of the movable frame (9).

4. A self-locking mechanical switch according to claim 1, characterized in that, The terminal block (1) is also fixedly connected to a terminal (12), and a fixed contact (13) is fixedly connected to the upper surface of the terminal (12).

5. A self-locking mechanical switch according to claim 1, characterized in that, The moving contact (11) contacts the fixed contact (13) when it moves.

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