Manual reset temperature control relay

Abstract

The invention discloses a manual reset temperature control relay which comprises fixing rings, a shell, a reset rod, a reed, a bottom cover, a temperature-sensing element, a push rod and an outer housing, wherein the bottom cover is connected with the bottom end of the shell; the push rod is inserted into a push rod hole of the bottom cover in a penetrating manner; the reset rod is inserted into a reset rod hole of the shell in a penetrating manner; the outer housing is enwrapped on the bottom cover and is connected with the shell; the reed is fixedly arranged in the shell, and a connecting port of the reed is arranged in a boss of the reset rod; a pin hole is arranged on a pin type contact in a penetrating manner; the temperature-sensing element is arranged between the bottom cover and the outer housing, the central part of the temperature-sensing element is connected with the push rod; the fixing ring is arranged at the outer side of the shell and is fixed with the outer housing; and a raised flanging is arranged on the periphery of the pin hole of the reed. The manual reset temperature control relay has the beneficial effects that the structure is simple, and not only are the requirements of the temperature control relay on the manual reset satisfied, but also the working life is prolonged, and the working reliability is improved.

Description

technical field [0001] The invention relates to the technical field of control electrical appliances, in particular to a manual reset temperature control relay. Background technique [0002] For temperature control relays with manual reset, when the circuit of the temperature control relay is disconnected, an external force needs to be manually applied to reset it. When the temperature control relay is reset, an external force is applied to the reset lever. The ball head of the reset lever touches the bent part of the reed and pushes against the push rod. During the reset process, the bent part of the reed is easily deformed. Cause the deformation of the reed itself and weaken the rigidity. Since the end of the reed is equipped with a moving contact, and the connection structure of the reed is a cantilever beam, the deformation reduces the contact strength between the moving contact and the static contact or cannot be contacted at all, resulting in The internal resis...

AI Technical Summary

Problems solved by technology

[0002] For temperature control relays with manual reset, when the circuit of the temperature control relay is disconnected, an external force needs to be manually applied to reset it. When the temperature control relay is reset, an external force is applied to the reset lever. The ball head of the reset lever touches the bent part of the reed and pushes against the push rod. During the reset process, the bent part of the reed is easily deformed. Cause the deformation of the reed itself and weaken the rigidity. Since the end of the reed is equipped with a moving contact, and the connection structure of the reed is a cantilever beam, the deformation reduces the contact strength between the moving contact and the static contact or cannot be contacted at all, resulting in The internal resistance of the temperature relay is too large or cannot be turned on and cannot work normally

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