Circuit board electricity taking mechanism for circuit breaker

Abstract

The utility model discloses a circuit board electricity taking mechanism for a circuit breaker, which comprises a coil (1), the coil (1) is fixedly connected with a circuit breaker shell (3) through a tripping frame (2), a magnet yoke (4) is connected outside the coil (1), and a circuit board (5) is electrically connected outside the magnet yoke (4). One end of the first pin (6) extends to the outer side of the tripping frame (2) and is attached to the magnet yoke (4), and the other end of the first pin (6) extends to the outer side of the tripping frame (2) and is electrically connected with the circuit board (5). According to the utility model, the occupation of the internal space of the circuit breaker can be reduced, and wiring of operators is facilitated.

Description

Technical Field

[0001] The utility model relates to a circuit breaker, in particular to a circuit board power taking mechanism for the circuit breaker. Background Art

[0002] At present, the electromagnetic release in the circuit breaker includes a yoke that is snap-fitted and connected to the circuit breaker housing, a release coil is fixed inside the yoke, the outer end of the release coil is electrically connected to the static contact, and the outer end of the yoke is electrically connected to the circuit board. However, the defect of the existing electromagnetic release during installation is that, since the yoke and the circuit board are respectively located on the inner and outer sides of the circuit breaker housing during installation and are in a state of separation from each other, the yoke needs to be led outward through the enameled wire during connection, and the enameled wire is welded to the circuit board after the circuit board is installed. This results in that the enameled wire lead-out structure not only occupies the internal space of the circuit breaker housing, but also requires operators to route and weld the enameled wire during assembly, thereby increasing the difficulty of assembly and wiring of the circuit breaker.

[0003] Therefore, the existing yoke connection structure of the circuit breaker has the problems of occupying space and being inconvenient to operate. Utility Model Content

[0004] The purpose of the utility model is to provide a circuit board power supply mechanism for a circuit breaker, which can reduce the occupation of the internal space of the circuit breaker and facilitate the wiring of operators.

[0005] The technical solution of the utility model is as follows: a circuit board power supply mechanism for a circuit breaker, comprising a coil, which is fixedly connected to a circuit breaker housing via a trip frame, the outside of the coil is connected to a yoke, the outside of the yoke is electrically connected to a circuit board, the trip frame is provided with a first jack, a first pin is snap-connected in the first jack, one end of the first pin extends to the outside of the trip frame and fits with the yoke, and the other end of the first pin extends to the outside of the trip frame and is electrically connected to the circuit board.

[0006] In the aforementioned circuit board power supply mechanism for a circuit breaker, the circuit board is provided with a first through hole for the first pin to pass through, and the first pin is welded to the circuit board after passing through the first through hole.

[0007] In the aforementioned circuit board power supply mechanism for a circuit breaker, the outside of the coil is connected to a zero-sequence current transformer, a second pin is snap-connected to the zero-sequence current transformer via a second socket, the inner end of the second pin is electrically connected to the enameled wire of the zero-sequence current transformer, and the outer end of the second pin extends to the outside of the zero-sequence current transformer and is electrically connected to the circuit board.

[0008] In the aforementioned circuit board power supply mechanism for a circuit breaker, the circuit board is provided with a second through hole for the second pin to pass through, and the second pin is welded to the circuit board after passing through the second through hole.

[0009] In the aforementioned circuit board power supply mechanism for a circuit breaker, the middle parts of the first plug pin and the second plug pin are both provided with a clamping portion for limiting, and the shape of the clamping portion is larger than the first plug hole and the second plug hole.

[0010] Compared with the prior art, the utility model has the following characteristics:

[0011] (1) The utility model cooperates with the structure of the trip frame and the first pin, so that after the trip frame is installed, one end of the first pin and the yoke can be attached to each other and electrically connected, and the other end of the first pin can pass through the trip frame to extend to the outside; on this basis, by setting a first through hole on the circuit board, the first pin can pass through the first through hole to extend to the outside when the circuit board is installed, so that the operator can directly weld the first pin to the circuit board after the circuit board is fixed, thereby eliminating the wiring process of the yoke connection line and reducing the occupation of the internal space of the circuit breaker; on the other hand, the operator can also directly weld from the outside after the circuit board is fixed, that is, reducing the difficulty of wiring the circuit board;

[0012] (2) Similarly, the utility model provides a second pin on the zero-sequence current transformer and cooperates with a second through-hole on the circuit board, so that the zero-sequence current transformer and the circuit board can be directly connected through the second pin and the second through-hole after installation, thereby eliminating the existing enameled wire connection structure and facilitating operators to connect the wires from the outside;

[0013] Therefore, the utility model can reduce the occupation of the internal space of the circuit breaker and facilitate the wiring of the operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a connection structure diagram of a yoke, a zero-sequence current transformer and a circuit board 5.

[0016] The markings in the accompanying drawings are: 1-coil, 2-trip frame, 3-circuit breaker housing, 4-yoke, 5-circuit board, 6-first pin, 7-first through hole, 8-zero-sequence current transformer, 9-second pin, 10-second through hole. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0018] Embodiment. A circuit board power supply mechanism for a circuit breaker, comprising: Figure 1As shown, it includes a coil 1, which is fixedly connected to a circuit breaker housing 3 via a trip frame 2 made of plastic material. The outside of the coil 1 is connected to a yoke 4, and the outside of the yoke 4 is electrically connected to a circuit board 5. The yoke 4 and the trip frame 2 are snap-fitted and connected to the circuit breaker housing 3 during installation. The trip frame 2 is provided with a first socket, and a first pin 6 is snap-fitted and connected in the first socket. One end of the first pin 6 extends to the outside of the trip frame 2 and is attached to and electrically connected to the yoke 4, and the other end of the first pin 6 extends to the outside of the trip frame 2 and is electrically connected to the circuit board 5.

[0019] The circuit board 5 is provided with a first through hole 7 for the first pin 6 to pass through. After passing through the first through hole 7 , the first pin 6 extends to the outside of the circuit board 5 and is soldered to the circuit board 5 .

[0020] The outside of the coil 1 is connected to a zero-sequence current transformer 8 for leakage detection, and a second pin 9 is connected to the zero-sequence current transformer 8 via a second socket. The inner end of the second pin 9 is electrically connected to the enameled wire of the zero-sequence current transformer 8, and the outer end of the second pin 9 extends to the outside of the zero-sequence current transformer 8 and is electrically connected to the circuit board 5.

[0021] The circuit board 5 is provided with a second through hole 10 for the second pin 9 to pass through. After passing through the second through hole 10 , the second pin 9 extends to the outside of the circuit board 5 and is soldered to the circuit board 5 .

[0022] The first pin 6 and the second pin 9 are both provided with a clamping portion for limiting in the middle, and the shape of the clamping portion is larger than the first socket and the second socket. After being inserted into the first socket and the second socket, the first pin 6 and the second pin 9 are axially positioned by the clamping portion, thereby leaving an end length for welding the circuit board 5.

[0023] Working principle of the utility model: When installing the electromagnetic release of the utility model, first wind the coil 1 on the release frame 2, and then fix the release frame 2 and the yoke 4 together on the circuit breaker housing 3 after buckling. After the release frame 2 and the yoke 4 are buckled, the inner end of the first pin 6 and the yoke 4 fit each other to form an electrical connection, and the outer end of the first pin 6 extends outward. After the electromagnetic release is installed, the operator fixes the circuit board 5 on the outside of the electromagnetic release, and makes the first pin 6 extend to the outside of the circuit board 5 through the first perforation 7 after the circuit board 5 is installed, so that the operator can directly weld the circuit board 5 and the first pin 6 on the outside, and realize the electrical connection function of the yoke 4 and the circuit board 5.

[0024] Similarly, when installing the zero-sequence current transformer 8, the operator first fixes the zero-sequence current transformer 8 directly on the circuit breaker housing 3, then fixes the circuit board 5 to the outside of the zero-sequence current transformer 8, and extends the second pin 9 through the second perforation 10 to the outside of the circuit board 5, so that the operator can directly weld the second pin 9 from the outside after the circuit board 5 is installed, reducing the difficulty of wiring the zero-sequence current transformer 8.

Claims

1. A circuit board power supply mechanism for a circuit breaker, comprising a coil (1), the coil (1) being fixedly connected to a circuit breaker housing (3) via a trip frame (2), the outside of the coil (1) being connected to a yoke (4), the outside of the yoke (4) being electrically connected to a circuit board (5), characterized in that: The trip frame (2) is provided with a first plug hole, in which a first plug pin (6) is buckled and connected, one end of the first plug pin (6) extends to the outside of the trip frame (2) and fits with the yoke (4), and the other end of the first plug pin (6) extends to the outside of the trip frame (2) and is electrically connected to the circuit board (5).

2. A circuit board power supply mechanism for a circuit breaker according to claim 1, characterized in that: The circuit board (5) is provided with a first through hole (7) for the first plug pin (6) to pass through, and the first plug pin (6) is welded to the circuit board (5) after passing through the first through hole (7).

3. A circuit board power supply mechanism for a circuit breaker according to claim 1, characterized in that: The coil (1) is externally connected to a zero-sequence current transformer (8), a second plug pin (9) is snap-fitted to the zero-sequence current transformer (8) via a second plug hole, an inner end of the second plug pin (9) is electrically connected to an enameled wire of the zero-sequence current transformer (8), and an outer end of the second plug pin (9) extends to the outside of the zero-sequence current transformer (8) and is electrically connected to a circuit board (5).

4. A circuit board power supply mechanism for a circuit breaker according to claim 3, characterized in that: The circuit board (5) is provided with a second through hole (10) for the second plug pin (9) to pass through, and the second plug pin (9) is welded to the circuit board (5) after passing through the second through hole (10).

5. The circuit board power supply mechanism for a circuit breaker according to claim 3, characterized in that: The middle parts of the first plug pin (6) and the second plug pin (9) are both provided with a clamping portion for limiting the position, and the outer shape of the clamping portion is larger than that of the first plug hole and the second plug hole.

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