Power taking mechanism for circuit breaker
By using a torsion spring power supply in the circuit breaker, power is only drawn when the moving contact is closed, solving the problems of complex circuits and high energy consumption, and achieving miniaturized design and reduced energy consumption.
Patent Information
- Application Number
- CN202422929126.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-11-29
AI Technical Summary
The existing circuit breaker's power supply method leads to complex wiring, affecting the miniaturization design, and the circuit board is always powered on, increasing energy consumption.
A torsion spring is used as the power-taking component. A power circuit is formed only when the moving contact and the static contact are closed. Power is taken through the contact between the moving contact and the torsion spring. The power supply is disconnected when the switch is opened. The position of the torsion spring is fixed in combination with the support column to ensure stable contact.
Simplifies circuit layout, is suitable for small circuit breaker design, reduces energy consumption, realizes power off of circuit board when opening, and improves energy efficiency.
Smart Images
Figure CN223450811U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to low voltage electrical apparatus technical field, concretely relates to a take power mechanism for circuit breaker. BACKGROUND
[0002] The development of small intelligent circuit breaker makes the internal circuit board need to take power from the incoming line end and the moving contact, and the conventional power taking mode is mostly directly through a wire harness, one end of which is electrically connected with the circuit board, and the other end is directly welded and fixed with the moving contact to realize the power supply acquisition of the circuit board, but the wire harness connection leads to complex circuit wiring, and the wire harness also affects the action of other mechanisms, which is not conducive to the miniaturization design of the circuit breaker, and the welding and fixation with the moving contact make the circuit board always in the energized state, which increases the energy consumption. SUMMARY
[0003] In view of the defects in the prior art, the utility model aims at providing a take power mechanism for circuit breaker.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:
[0005] A take power mechanism for circuit breaker, comprising:
[0006] A circuit board arranged in the circuit breaker shell, one power taking end of the circuit board being electrically connected with the incoming line end;
[0007] A power taking piece, one end of which is fixedly connected with another power taking end of the circuit board, and the other end of which is arranged between the moving contact and the static contact, and when the moving contact and the static contact are in contact, the power taking piece is in contact with the moving contact and forms an energized loop.
[0008] The power taking piece is a torsion spring, and the circuit breaker shell is provided with a support column for supporting and fixing the torsion spring.
[0009] One end of the torsion spring is welded and fixed with the circuit board, and the other end of the torsion spring is bent to form a matching end, and when the matching end is matched with the moving contact, line contact is formed.
[0010] The end of the moving contact matched with the power taking piece is provided with a notch.
[0011] The notch is in the shape of a circular arc.
[0012] The utility model has the advantages that the utility model is provided with a power taking piece connected with the circuit board, and power is taken from the moving contact only when the moving contact and the static contact are in the closed position, so that the power supply of the circuit board can be disconnected when the circuit breaker is in the open position, the energy consumption is reduced, the structure is simple, and the utility model is suitable for small circuit breakers. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1The structure diagram of the circuit breaker in the closing state.
[0014] Figure 2 The structure diagram of the circuit breaker in the closing state. DETAILED DESCRIPTION
[0015] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0016] It should be noted that all the directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indications also change accordingly.
[0017] The circuit breaker power taking mechanism provided by the present application is used for line board power taking, and a leakage release and a leakage test circuit are fixed on the line board, both of which can only obtain power in the closing state, and do not need to obtain power in the opening state, so that the power taking structure can be disconnected in the opening state, and energy consumption is reduced.
[0018] The line board 200 is arranged in the circuit breaker shell 100, one power taking end of the line board 200 is electrically connected with an incoming line end, the line board 200 includes two power taking ends, a loop is formed by the two power taking ends and an external circuit, one power taking end is electrically connected with the incoming line end, and the line board 200 can be connected by a wire harness or other metal parts, and the line board 200 can be directly connected with a wiring terminal on one side of the circuit breaker and obtain power from the wiring terminal.
[0019] The power taking part 300 is fixedly connected with another power taking end of the line board 200 at one end, and is arranged between the moving contact 500 and the static contact 400 at the other end, and when the moving contact 500 and the static contact 400 are in contact, the power taking part 300 is in contact with the moving contact 500 and forms a power supply loop.
[0020] The moving contact is electrically connected with a wiring terminal on the other side of the circuit breaker, and the connection mode can adopt a conventional wire harness connection.
[0021] The power taking end of the power taking part is located between the moving contact and the static contact, and is in an empty connection state when the circuit breaker is opened, that is, not in contact with the moving contact and the static contact, and when the moving contact is closed, the moving contact is in contact with the static contact after rotating a certain angle, that is, when the circuit breaker is closed, the line board is in contact with the moving contact through the power taking part and obtains power.
[0022] The power taking part 300 is a torsion spring, and the circuit breaker housing 100 is provided with a support column 110 for supporting and fixing the torsion spring, the torsion spring is sleeved on the support column and is limited by the other side of the housing, so that it can be firmly fixed and the position of the power taking end is stable, and the power taking end can always be in contact with the moving contact when the circuit breaker is closed, and the position of the power taking part will not deviate due to the torsion spring, and the power taking effect will not be affected.
[0023] One end of the torsion spring is welded and fixed with the line board, and the other end is bent to form a matching end 310, and the matching end 310 forms a line contact when matched with the moving contact 500.
[0024] The contact area is increased by bending the torsion spring, so that the contact with the moving contact is more reliable.
[0025] The end of the moving contact 500 matched with the power taking part 300 is provided with a notch 510, and the notch 510 is in the shape of a circular arc. The design of the notch 510 limits the position of the matching end of the power taking part, so that the matching end will not deviate from the contact range of the moving contact, and the notch makes the distance from the moving contact to the static contact consistent with the distance from the moving contact to the power taking part, so that the moving contact is in contact with the power taking part when the moving contact and the static contact are closed.
[0026] The embodiments should not be regarded as a limitation of the utility model, but any improvement based on the spirit of the utility model should be within the protection scope of the utility model.
Claims
1. A power supply mechanism for a circuit breaker, characterized in that: It includes: A circuit board (200) is arranged in a circuit breaker housing (100), wherein a power-taking end of the circuit board (200) is electrically connected to a line-incoming end; The power taking component (300) has one end fixedly connected to the other power taking end of the circuit board (200), and the other end is placed between the moving contact (500) and the static contact (400), and when the moving contact (500) contacts the static contact (400), the power taking component (300) contacts the moving contact (500) and forms a power circuit.
2. A power supply mechanism for a circuit breaker according to claim 1, characterized in that: The power extraction component (300) is a torsion spring, and a support column (110) for supporting and fixing the torsion spring is provided in the circuit breaker housing (100).
3. The power supply mechanism for a circuit breaker according to claim 2, characterized in that: One end of the torsion spring is welded and fixed to the circuit board, and the other end is bent to form a mating end (310), and the mating end (310) forms a line contact when mated with the moving contact (500).
4. The power supply mechanism for a circuit breaker according to claim 1, characterized in that: One end of the moving contact (500) that cooperates with the power extraction member (300) is provided with a notch (510).
5. The power supply mechanism for a circuit breaker according to claim 4, characterized in that: The notch (510) is in an arc shape.