Contact matching structure of electrical switch
An electrical switch and matching structure technology, applied in electrical switches, air switch parts, electrical components, etc., can solve the problems of unstable test, uncontrollable electrical wear position, etc., to increase closing reliability and high space utilization. , the effect of increasing the design spacing
Pending Publication Date: 2020-12-25
SHANGHAI LIANGXIN ELECTRICAL
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Problems solved by technology
[0004] In order to solve the technical problem that the position of electrical wear is uncontrollable when the dynamic and static contacts are in contact with each other, resulting in unstable tests after the test, the present invention provides a contact matching structure of an electrical switch, so that most of the burning loss is concentrated on the arc contacts, To control the position of the contact ablation point
Method used
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[0013] Below by embodiment and in conjunction with accompanying drawing, the present invention will be further described:
[0014] like figure 1 and figure 2 As shown, a contact matching structure of an electrical switch is composed of a static contact 1 and a moving contact 2. The static contact 1 is fixed on the base, and the moving contact 2 is installed on a sliding block. The moving contact The head 2 approaches or moves away from the static contact 1 driven by the slider, so as to realize closing or opening. The edges of the side of the static contact 1 and the moving contact 2 that are close to each other have chamfers. The moving contact 2 is provided with an arcing contact 201 and a main contact 202 , and the arcing contact 201 is located at the outer end of the moving contact 2 . There is an included angle between the contact surfaces on the corresponding side of the static contact 1 and the moving contact 2, so that the arc contact 201 contacts the static contact...
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The present invention provides a contact matching structure of an electrical switch. The contact matching structure comprises a static contact and a moving contact which are parallel to each other, the moving contact is provided with an arc contact and a main contact, the arc contact is located at the outer end of the moving contact, and an included angle is formed between the edges of the sides,close to each other, of the static contact and the moving contact in a switching-off state. In this way, the arc contact contacts the static contact before the main contact during the closing process.According to the invention, the arc contact of the moving contact is firstly contacted with the static contact during switching-on and is finally disconnected during switching-off, so that most burning loss is concentrated at the arc contact, and the ablation point position of the moving contact is effectively controlled; due to the design of the static contact pit, the safety margin that slag accumulation of the arc contact exceeds the height of the main contact is increased, and the closing reliability is improved; and the space of the moving contact in the moving direction is not occupied,so that the space utilization rate of the moving contact in the moving direction is higher, the design opening distance is increased, and the product performance is improved.
Description
technical field [0001] The invention belongs to the field of isolating switches, and in particular relates to a contact matching structure of an electric switch. Background technique [0002] The isolating switch is a switching device that is mainly used to "isolate power supply, switch operation, connect and cut off small current circuits", and has no arc extinguishing function. When the isolating switch is in the off position, there is an insulation distance between the contacts that meets the specified requirements and an obvious disconnection mark; current switching devices. [0003] In the existing translational isolating switch, the static contacts are generally fixed on the base, and the moving contacts are installed on the slidable slider. Through the sliding of the slider, the moving and static contacts are separated and closed to realize the on-off of the switch. The existing translational isolating switch has the following defects: 1. When the dynamic and static...
Claims
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Login to View More IPC IPC(8): H01H31/02
CPCH01H31/023H01H31/026
Inventor 王恒阳柯正张江蒋兆勇
Owner SHANGHAI LIANGXIN ELECTRICAL