Switchable moving contact

Abstract

The utility model discloses a switchable moving contact, which comprises a contact body and a contact contact block, one end of the contact body is provided with a first slot, the contact contact block is provided with a first insertion part which can be inserted into the first slot in a clinging manner, the contact contact block is provided with convex contacts in a bilateral symmetry manner, and the convex contacts are provided with a second insertion part which can be inserted into the first slot in a clinging manner. The outer convex contact can be matched with the static contact for electric conduction, a first insertion hole is formed in the position, corresponding to the first insertion groove, of the side wall of the contact body, and a second insertion hole corresponding to the first insertion hole is formed in the first insertion part; and the positioning plug connector can be inserted into the first jack and the second jack to realize positioning connection between the contact block and the contact body. According to the utility model, the structure is simple, the design is reasonable, the switching use of the convex contact matched with the static contact can be realized, the service life of the convex contact is effectively prolonged, the convex contact can be independently replaced when only the convex contact is damaged, and the maintenance cost and difficulty are effectively reduced.

Description

Technical Field

[0001] The utility model relates to a safe electrical accessory, in particular to a switchable moving contact. Background Art

[0002] The circuit breaker switch is mainly used to control the connection or disconnection of the circuit. When a short circuit, leakage or other dangerous situation is found in the circuit, the circuit is controlled to be disconnected to ensure the safe supply of electricity. The moving contact is an important component of the circuit breaker. It is mainly used to contact with the static contact to connect the circuit, or to separate from the static contact to disconnect the circuit. During the disconnection process, a large arc will be generated at the moving contact. The high temperature of the arc will cause the contact end of the moving contact to melt and burn, accelerate the wear of the contact, and shorten its service life. Frequent arcing may cause the contact surface to become rough or even stick together, affecting normal disconnection. At this time, the moving contact needs to be replaced. However, except for the large wear on the contact end of the moving contact, the rest of the moving contact is generally not damaged. The replaced moving contact can only be recycled, melted and pressed for secondary molding, resulting in low utilization rate. Especially for some large high-voltage circuit breakers, the moving contact has a large size and generally adopts a sheet structure, which leads to high replacement cost and troublesome replacement operation of the moving contact. Utility Model Content

[0003] In view of the shortcomings of the background technology, the technical problem to be solved by the present invention is to provide a switchable moving contact for solving the above-mentioned problem.

[0004] To this end, the utility model is implemented by adopting the following scheme:

[0005] A switchable moving contact comprises a contact body, characterized in that it also comprises a contact block, a first slot is provided at one end of the contact body, a first plug-in portion which can be snugly inserted into the first slot is provided on the contact block, a convex contact head is symmetrically provided on the contact block, the convex contact head can cooperate with a static contact for electrical conduction, a first socket is provided on the side wall of the contact body at a position corresponding to the first slot, a second socket corresponding to the first socket is provided on the first plug-in portion, and a positioning connector is also included, the positioning connector can be inserted into the first and second sockets to realize the positioning connection between the contact block and the contact body.

[0006] The first and second jacks are rectangular in shape, the positioning connector has a shape corresponding to the first and second jacks, and the positioning connector is interference-fitted with the first and second jacks.

[0007] The positioning plug-in connector is provided with a pull-out connection hole.

[0008] The contact body is provided with a second slot at the bottom of the first slot, and the bottom of the first plug-in portion is provided with a second plug-in portion which can be inserted into the second slot.

[0009] A switchable moving contact of the above technical solution is configured by setting the contact body and the contact block as a split structure, and symmetrically arranging conductive convex contact heads that cooperate with the static contact on the contact block. When the convex contact heads are worn during use, they can be reused by removing the contact block and changing a direction, which is very convenient to operate. In addition, after both convex contact heads are worn, only the contact block needs to be replaced, and the contact body generally will not be damaged during long-term use, thereby reducing the cost of replacing and repairing the moving contact and the difficulty of repair and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The utility model has the following drawings:

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 This is a separate structural diagram of the contact body and the contact block of the utility model;

[0013] Figure 3 This is a view of the top position of the contact body of the present invention. DETAILED DESCRIPTION

[0014] As shown in the figure, a switchable moving contact disclosed by the utility model includes a contact body 1 and a contact block 3. A first slot 9 is provided at one end of the contact body 1. A first plug-in portion 2 that can be inserted tightly into the first slot 9 is provided on the contact block 3 to ensure that the two can stably contact and conduct electricity. A convex contact head 4 is provided on the contact block 3 symmetrically. The convex contact head 4 can cooperate with the static contact to conduct electricity. A first plug hole 10 is provided on the side wall of the contact body 1 at a position corresponding to the first slot 9. A second plug-in portion 2 is provided with a second plug hole 7 corresponding to the first plug hole 10. A positioning plug-in 6 is also included. The positioning plug-in 6 can be inserted into the first and second plug holes to realize the positioning connection between the contact block 3 and the contact body 1. Specifically, the first plug hole 10 and the second plug hole 7 are provided in a rectangular shape. The shape of the positioning plug-in 6 corresponds to the first and second plug holes. The positioning plug-in 6 and the first and second plug holes are interference-fitted. The positioning connector 6 is provided with a pull-out connection hole 5. By inserting the plug rod into the pull-out connection hole 5 and then pulling the plug rod, the positioning connector 6 can be pulled out from the first and second plug holes with relatively little effort. Furthermore, the contact body 1 is provided with a second slot 11 at the bottom of the first slot 9, and the bottom of the first plug part 2 is provided with a second plug part 8 that can be inserted into the second slot 11. By setting the second plug part 8 and the second slot 11 to cooperate, the horizontal position of the positioning connector 6 can be positioned. At the same time, the contact block 3 is provided with a positioning step 12 corresponding to the top of the first plug part 2, and the positioning step 12 abuts against the top of the contact body 1 to achieve positioning during insertion.

[0015] The structure of the utility model is such that the contact body 1 and the contact block 3 are arranged as a split structure, and the conductive convex contact heads 4 cooperating with the static contacts are symmetrically arranged on the contact block 3. When the convex contact heads 4 are worn during use, they can be reused by removing the contact block 3 and changing a direction, which is very convenient to operate. In addition, after both convex contact heads 4 are worn, only the contact block 3 needs to be replaced, and the contact body 1 is generally not damaged during long-term use, thereby reducing the cost of replacing and repairing the moving contact and the difficulty of repair and replacement.

Claims

1. A switchable movable contact, comprising a contact body (1), characterized in that: The invention also comprises a contact block (3), wherein a first slot (9) is provided at one end of the contact body (1), a first plug-in portion (2) which can be snugly inserted into the first slot (9) is provided on the contact block (3), convex contact heads (4) are symmetrically provided on the contact block (3), and the convex contact heads (4) can cooperate with the stationary contact to conduct electricity, a first plug hole (10) is provided on the side wall of the contact body (1) at a position corresponding to the first slot (9), a second plug-in portion (2) is provided with a second plug hole (7) corresponding to the first plug hole (10), and a positioning plug-in component (6) is provided, wherein the positioning plug-in component (6) can be inserted into the first and second plug holes to realize a positioning connection between the contact block (3) and the contact body (1).

2. A switchable moving contact according to claim 1, characterized in that: The first plug hole (10) and the second plug hole (7) are opened in a rectangular shape, the shape of the positioning plug connector (6) corresponds to the first and second plug holes, and the positioning plug connector (6) is interference-fitted with the first and second plug holes.

3. A switchable moving contact according to claim 2, characterized in that: The positioning plug-in connector (6) is provided with a pull-out connection hole (5).

4. The switchable moving contact according to claim 1, characterized in that: The contact body (1) is provided with a second slot (11) at the bottom of the first slot (9), and the bottom of the first plug-in portion (2) is provided with a second plug-in portion (8) which can be inserted into the second slot (11).

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