High stability power-off switch

Abstract

The utility model discloses a high stability power-off switch, its characterized in that: including upper casing and base, be provided with first placing groove and second placing groove on the base, first static contact piece sets up in first placing groove, second static contact piece sets up in second placing groove, correspond first static contact piece and be provided with first electricity column, correspond second static contact piece and be provided with second electricity column, be provided with the knob of rotation on the upper casing, the knob is connected with transmission link, be connected with the rotating disc and dynamic contact piece on transmission link, be provided with spring between the rotating disc and dynamic contact piece, tightly press dynamic contact piece on the base, the base adopts insulating material. The utility model discloses simple structure, reasonable in design can realize the rotation type of dynamic contact piece and break, make it can cooperate friction with base and realize arc extinguishing, also guarantee contact pressure stability simultaneously, and electric performance is more reliable.

Description

Technical Field

[0001] This utility model relates to switches, specifically to a high-stability power-off switch. Background Technology

[0002] Power switches are primarily used to connect or disconnect circuits. One type of power switch is used to connect or disconnect vehicle batteries. Its working principle involves controlling the up-and-down movement of a moving contact to make contact with a stationary contact to connect the power supply, or to separate from the stationary contact to disconnect the power supply. However, the above-mentioned power switches have several drawbacks in practical use: an electric arc is generated between the contact points when the moving contact separates from the stationary contact, which can damage the switch components during prolonged use; additionally, the contact pressure of this up-and-down moving contact is unstable when it contacts the stationary contact, affecting the product's electrical performance; furthermore, the mounting holes of traditional power switches are located on the outer edge of the casing, resulting in a larger overall size and requiring more space, making them difficult to install in confined spaces. Utility Model Content

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a highly stable power-off switch for solving the above-mentioned problems.

[0004] Therefore, this utility model is implemented using the following solution: A high-stability power-off switch, characterized in that: it includes an upper housing and a base, the base being provided with a first placement groove and a second placement groove, a first stationary contact piece being disposed in the first placement groove, a second stationary contact piece being disposed in the second placement groove, a first terminal post being disposed corresponding to the first stationary contact piece, and a second terminal post being disposed corresponding to the second stationary contact piece, a knob being rotatably disposed on the upper housing, the knob being connected to a transmission rod, a rotating disk and a moving contact piece being connected to the transmission rod, a spring being disposed between the rotating disk and the moving contact piece to press the moving contact piece tightly against the base, and the base being made of insulating material.

[0005] The upper housing is provided with a mounting post, and the knob is rotated and sleeved on the mounting post.

[0006] The upper housing is provided with a riveting post with a through hole, and the base is provided with a riveting hole corresponding to the riveting post. The riveting pin passes through the riveting post and the riveting hole to rivet the upper housing and the base. The riveting post is located close to the center of the upper housing.

[0007] The top of the rotating disk is provided with a limiting groove, and the upper housing is provided with a limiting protrusion that can be inserted into the limiting groove.

[0008] The base is provided with a limiting post that can abut against the moving contact piece.

[0009] The aforementioned high-stability power-off switch, through an innovative structural design, places the stationary contact on the base and uses a spring to press the moving contact firmly against the base. When the moving contact is rotated to separate from the stationary contact, the moving contact will rub against the base, thereby extinguishing the generated arc. This ensures the arc-extinguishing performance of the product and guarantees that all components can maintain stable operation during long-term switching. At the same time, the spring pressing on the moving contact ensures that the contact pressure between the stationary and moving contacts remains stable, thus improving its electrical performance during connection. In addition, by placing the riveting post close to the center of the upper housing, it is beneficial to the miniaturization of the product, making its overall size smaller and reducing the space it occupies, facilitating its installation in confined spaces. Attached Figure Description

[0010] The present invention includes the following figures: Figure 1 This is a diagram of the external structure of the present invention; Figure 2 for Figure 1 Bottom-view perspective; Figure 3 This is a view of the present invention after removing the knob and the upper housing; Figure 4 This is a structural diagram of the base of this utility model; Figure 5 This is a structural diagram of the knob of this utility model. Detailed Implementation

[0011] As shown in the figure, this utility model discloses a high-stability power-off switch, including an upper housing 3 and a base 6. The upper housing 3 has a riveting post 17 with a through hole 16, and the base 6 has a riveting hole corresponding to the riveting post 17. A riveting pin 11 passes through the riveting post 17 and the riveting hole to rivet the upper housing 3 and the base 6. The riveting post 17 is located close to the center of the upper housing. An annular groove 19 is provided on the upper housing 3, and a sealing ring is provided within the annular groove 19 for sealing between the upper housing 3 and the base 6. The base 6 has a first placement groove and a second placement groove. A first stationary contact piece 14 is placed in the first placement groove, and a second stationary contact piece 15 is placed in the second placement groove. A first power-connecting post 5 is provided corresponding to the first stationary contact piece 14, and a second power-connecting post 4 is provided corresponding to the second stationary contact piece 15. A knob 1 is rotatably mounted on the upper housing 3. Specifically, the upper housing 3 has a mounting post 2, and the knob 1 is rotatably mounted on the mounting post 2. Knob 1 is connected to transmission rod 7, which is connected to rotating disk 8 and moving contact piece 13. A spring 10 is installed between rotating disk 8 and moving contact piece 13, pressing moving contact piece 13 firmly against base 6. Base 6 is made of insulating material, such as plastic or bakelite. A limiting groove 9 is provided around the top of rotating disk 8, and a limiting protrusion 18 on the upper housing 3 can be engaged with the limiting groove 9. With this structure, when knob 1 drives moving contact piece 13 to rotate to the connection or disconnection angle, the corresponding limiting protrusion 18 on the upper housing 3 will engage with the limiting groove 9 on rotating disk 8, thus elastically limiting the rotation of knob 1 and ensuring the stability of the switch connection and disconnection states. Additionally, base 6 is provided with a limiting post 12 that abuts against moving contact piece 13. When moving contact piece 13 rotates to the connection or disconnection angle, it abuts against limiting post 12, ensuring that moving contact piece 13 can accurately rotate to the required angle and be positioned.

[0012] The working principle of this utility model is as follows: When the switch needs to be connected, the control knob 1 is rotated, and the transmission rod 7 drives the moving contact piece 12 to rotate, so that the contact heads at both ends of the moving contact piece 12 contact with the first stationary contact piece 14 and the second stationary contact piece 15 respectively, thereby realizing the connection of the first terminal 5 and the second terminal 4. At this time, the spring 11 presses the moving contact piece 12 tightly on the stationary contact piece, and the contact pressure between the moving and stationary contact pieces can remain stable, improving the electrical performance when connected. When the switch needs to be disconnected, the control knob 1 is rotated, and the transmission rod 7 drives the moving contact piece 12 to rotate, and the moving contact piece 12 separates from the first and second stationary contact pieces, so that the first and second terminals are disconnected. When disconnected, an electric arc is generated on the moving contact piece. As the moving contact piece 12 rotates, the spring 10 presses the moving contact piece 12 tightly on the base 6 made of insulating material. Friction occurs between the moving contact piece 12 and the base 6, thereby extinguishing the generated electric arc.

[0013] This invention features an innovative structural design that places the stationary contact on the base and uses a spring to press the moving contact firmly against the base. When the moving contact is rotated and separated from the stationary contact, it rubs against the base, thus extinguishing the electric arc. This effectively improves the arc-extinguishing performance of the product and ensures that all components can maintain stable operation during long-term switching. At the same time, the spring pressing on the moving contact ensures that the contact pressure between the stationary and moving contacts remains stable, thereby improving the electrical performance during connection.

Claims

1. A high-stability power-off switch, characterized in that: The device includes an upper housing (3) and a base (6). The base (6) is provided with a first placement groove and a second placement groove. A first stationary contact piece (14) is placed in the first placement groove, and a second stationary contact piece (15) is placed in the second placement groove. A first electrical terminal (5) is provided corresponding to the first stationary contact piece (14), and a second electrical terminal (4) is provided corresponding to the second stationary contact piece (15). A knob (1) is rotatably provided on the upper housing (3). The knob (1) is connected to a transmission rod (7). A rotating disk (8) and a moving contact piece (13) are connected on the transmission rod (7). A spring (10) is provided between the rotating disk (8) and the moving contact piece (13) to press the moving contact piece (13) tightly onto the base (6). The base (6) is made of insulating material.

2. The high-stability power-off switch according to claim 1, characterized in that: The upper housing (3) is provided with a mounting post (2), and the knob (1) is rotated and sleeved on the mounting post (2).

3. The high-stability power-off switch according to claim 1, characterized in that: The upper housing (3) is provided with a rivet post (17) with a through hole (16), and the base (6) is provided with a rivet hole corresponding to the rivet post (17). The rivet pin (11) passes through the rivet post (17) and the rivet hole to rivet the upper housing (3) and the base (6). The rivet post (17) is located close to the center of the upper housing (3).

4. A high-stability power-off switch according to claim 1, characterized in that: The top of the rotating disk (8) is provided with a limiting groove (9), and the upper housing (3) is provided with a limiting protrusion (18) that can be inserted into the limiting groove (9).

5. A high-stability power-off switch according to claim 1, characterized in that: The base (6) is provided with a limiting post (12) that can abut against the movable contact piece (13).

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