Spring operating mechanism and compression end cover thereof

Abstract

The invention relates to a spring operating mechanism and a compression end cover thereof. The spring operating mechanism comprises an energy storage spring used for storing energy required by openingand closing, one end of the energy storage spring is provided with a fixing seat used for supporting the energy storage spring, the other end of the energy storage spring is provided with a compression end cover used for driving the energy storage spring to compress, the compression end cover is connected with a transmission piece used for driving the compression end cover, the compression end cover is provided with a spring contact part used for providing pressure for the energy storage spring in the axis direction of the energy storage spring, the compression end cover further comprises a transmission piece connecting part used for being connected with the transmission piece, and the transmission piece connecting part is closer to the fixed seat compared to the spring contact part. Thetransmission piece connecting part is close to a spring fixed seat, the anti-tilting resistance arm of the compression end cover is large and is not easy to tilt; and meanwhile, the self-balancing effect of the compression end cover is good, and the compression end cover can be aligned after being inclined. Therefore, the compression end cover capable of reducing the inclination of an energy storage spring and a spring operating mechanism using the compression end cover are provided.

Description

technical field [0001] The present invention relates to a spring operating mechanism and its compression end cap. Background technique [0002] The spring operating mechanism is an operating mechanism commonly used in circuit breakers, which uses the energy storage spring as the power element to open and close the switch. It has a small operating power supply capacity and can use both AC and DC power sources with low cost advantage. [0003] The authorized announcement number is CN206401197U, and the Chinese patent authorized announcement date is 2017.08.11 discloses a circuit breaker and its spring operating mechanism. The schematic diagram of the spring operating mechanism is as follows figure 1 As shown, it includes a motor, a transmission mechanism, an energy storage spring 103, a flywheel gear 107 for driving the energy storage spring 103 to compress, and an energy storage pinion 106 meshed with the flywheel gear 107 for transmission. The energy storage spring 103 is i...

AI Technical Summary

Problems solved by technology

[0005] But the problem of using this kind of compression end cover is: when the energy storage spring is compressed, it stores energy. Since the energy storage spring is fixed at one end, the end with the compression end cover is forced to drive the energy storage spring to compress, and the connecting part of the transmission part is set On the outside of the spring, when the energy storage spring is too long or the compression amount is large, the energy storage spring and the compression end cover will rotate relative to each other, causing the energy storage spring to be twisted or even skewed. The wall of the energy storage spring barrel produces friction, which damages the energy storage spring and the spring barrel

In order to avoid this situation, friction-reducing rollers and anti-tilt structures are often added to the compression end cover, which makes the structure of the compression end cover complicated and the manufacturing cost high

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