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Moving contact and circuit breaker

A technology of moving contacts and hole positions, which is applied in the direction of circuit breaker parts, circuit breaker contacts, contacts, etc., to achieve the effects of fast speed, reducing sliding damage and maintaining reliability

Pending Publication Date: 2021-09-17
DELIXI ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a moving contact and a circuit breaker, which solves the problem of relative slippage when the moving contact and the static contact contact and separate in the prior art, and keeps the moving contact and the static contact The stability of the fit improves the service life of the contacts

Method used

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  • Moving contact and circuit breaker
  • Moving contact and circuit breaker
  • Moving contact and circuit breaker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1 This embodiment provides a structure of a movable contact 2, which includes an irregularly shaped body with a certain length, and a shaft hole 210 as a pivot point in the middle, and one end of which is connected to the final transmission of the tripping mechanism. The end of the rod is hinged, and the other end is provided with a movable contact 201 along its side in the direction of rotation when the shaft hole 210 is used as a fulcrum.

[0033] combine figure 2 As shown, the shaft hole 210 is a special-shaped hole, and the special-shaped hole is formed by fan-shaped connection of the first hole 210a in the open state, the second hole 210b in the closed state, and the spring hole 210f. figure 1 As shown, the first hole position 210a corresponding to the opening state is located at the top, and the second hole position 210b corresponding to the closing state is located at the bottom. by figure 2 As a reference, the first hole position 210a and the seco...

Embodiment 2

[0039] Embodiment 2 The difference between this embodiment and Embodiment 1 is that in this embodiment, the opening size of the first hole 210a and the part of the connecting section directly connected to the first hole 210a is the same as that of the synchronous contact 2. Cooperate with the diameter of the rotating shaft to adapt. The opening size of the first hole position 210a is larger than the opening size of a part of the connecting section directly connected to the first hole position 210a. Therefore, when the rotating shaft cooperates with the first hole position 210a, the swing of the rotating shaft is limited, and the stability of the movable contact after opening is improved.

Embodiment 3

[0040] Embodiment 3 This embodiment provides a circuit breaker, including a cover, a base, and a terminal installed between the cover and the base, a tripping system 3, an operating mechanism 4, and a contact system. The contact system includes a fixed installation The static contact 1 and the movable contact 2 provided in the above embodiment that cooperate with the static contact 1 movably. The movable contact 201 of the movable contact 2 provided by the above-mentioned embodiment maintains an arcuate or linear movement relative to the static contact 101 during the opening and closing process, such as image 3 As shown, when the switch is closed, it directly contacts the middle of the static contact 101 and maintains this state until the switch is opened.

[0041] However, when the movable contact 201 of the prior art is closed, it first contacts with the upper part of the static contact 101, and the contact point A is as Figure 4 As shown, with the action of the tripping ...

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PUM

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Abstract

The invention provides a moving contact and a circuit breaker, and belongs to the technical field of low-voltage electrical appliances. The moving contact comprises a moving contact body, a shaft hole is formed in the middle of the moving contact body, and the shaft hole comprises a first hole site in an opening state and a second hole site in a closing state; the first hole site and the second hole site are communicated, and the upper limiting walls and the lower limiting walls of the first hole site and the second hole site are located on the same straight line segment or arc segment respectively. The shape of the straight line segment or arc segment and the inclination direction and angle of the bottom inclined relative to the circuit breaker in the using state are matched with the closing track of the end, linked with the tripping system, of the moving contact. The invention provides the moving contact which is simple in modification and excellent in using effect, and a circuit breaker with the moving contact.The moving contact adapts to the closing track of the tripping mechanism by adjusting the motion track of the rotating fulcrum of the moving contact, so the stable and short-distance rapid opening and closing of the moving contact and the static contact are kept, the contact damage is reduced, the use performance is improved, and the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of low-voltage electrical appliances, in particular to a moving contact and a circuit breaker. Background technique [0002] A circuit breaker is a switching device capable of closing, carrying and breaking current under normal or abnormal circuit conditions in the corresponding environment. The contact system is one of the key components of the switching device, which also directly affects the performance and life of the circuit breaker. The contact includes a fixed fixed contact and a moving contact that moves relative to the static contact. In order to ensure that the contact has a corresponding overtravel, a long waist hole is set on the moving contact as a shaft hole. When the contact moves, one end is controlled by the tripping system and takes the rotating shaft on the shaft hole as the fulcrum, so that the other end is close to the position far away from the static contact. [0003] As the arc will...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H73/04H01H1/50
CPCH01H73/04H01H1/50
Inventor 俞华彬徐方剑许利战
Owner DELIXI ELECTRIC