Opening and closing mechanism of high-voltage part hand-operated maintenance switch

Abstract

The invention discloses an opening and closing mechanism of a high-voltage part hand-operated maintenance switch. The opening and closing mechanism comprises a base, an upper cover housing sleeving the base, and a handle fixed to the upper cover housing through a bolt rotating shaft. Two ends of the handle are provided with splines, and through the splines, the handle is connected with gear sectors similarly provided with splines. The gear sectors are engaged with fixed teeth arranged on the base. Compared with the guide rail type opening and closing mechanism, the opening and closing mechanism provided by the invention is small and even in opening force and is convenient and rapid, and the mechanism provided by the invention is more sturdy and durable.

Description

technical field [0001] The invention relates to the field of high-voltage safety of new energy vehicles, in particular to an opening and closing mechanism of a manual maintenance switch for high-voltage components. Background technique [0002] In recent years, China's new energy vehicles have developed rapidly. Since there are high-voltage components such as batteries and motors in new energy vehicles, people pay more and more attention to the safety of high-voltage electricity, especially when the vehicle is being maintained and maintained, maintenance personnel will inevitably come into contact with high-voltage components. To avoid the hidden danger of electrical injury, a switch needs to be installed to reliably disconnect the high-voltage connection line. In the initial stage of the development of new energy vehicles, industrial circuit breakers are generally installed on vehicles. When high-voltage lines need to be cut off, the circuit breakers are manually operated ...

AI Technical Summary

Problems solved by technology

[0005] (2) Uneven opening force

The opening force exerted on the handle has a great relationship with the lever ratio. Since the protrusion on the base slides in the ghost track of the handle, the contact point between the protrusion on the base and the inner wall of the guide rail will change, that is, the resistance point of the lever will change. changes, and thus the leverage ratio changes, the need to apply to the handle changes, resulting in uneven opening force

[0006] (3) The fulcrum of the lever mechanism bears a large force and is easily damaged

Due to the large opening force of the manual maintenance switch, and the handle of the manual maintenance switch is made of plastic, the strength is limited. In the actual use process, the handle will be deformed and finally detached from the fulcrum.

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