Matching structure of thermal relay and contactor

Abstract

The invention is applicable to the technical field of electric appliances, and provides a thermal relay and contactor matching structure, which comprises a thermal relay body and a contactor body, and is characterized in that the thermal relay body and the contactor body are positioned on the same horizontal plane for matching; and the transverse clamping assembly is connected between the thermal relay body and the contactor body and is used for assembling the thermal relay body and the contactor body and driving a conductive part in the thermal relay body to be positioned below a static contact in the contactor body. The thermal relay body and the contactor body are driven to be transversely placed, the thermal relay body is transversely and horizontally assembled and connected with the contactor body, the conductive part can be located below the static contact, meanwhile, the transverse clamping assembly is arranged to connect and install the thermal relay body and the contactor body, and the consistency and stability are higher; the matching precision requirement is lower, the manufacturing cost is lower, the assembly steps are fewer and simpler, and the rotation action is not needed.

Description

technical field [0001] The invention belongs to the technical field of electrical appliances, and in particular relates to a matching structure of a thermal relay and a contactor. Background technique [0002] The thermal overload relay is based on the principle of current thermal effect, and uses the thermal bimetal as the sensitive element. It is often used in the overload protection of the motor and is widely used. The matching method of the existing thermal overload relay and the contactor is to insert the two downward hooks of the heat relay into the corresponding hook holes on the base of the contactor, and then rotate the body of the heat relay at a certain angle so that the conductive parts of the heat relay go from Attach it to the upper surface of the contactor's static contact from top to bottom, and finally tighten the terminal screws to complete the assembly. [0003] As a result of the above assembly method, the conductive parts of the thermal relay are bound ...

AI Technical Summary

Problems solved by technology

[0003] As a result of the above assembly method, the conductive parts of the thermal relay are bound to be only on the upper surface of the static contact of the contactor, and the conductive parts of the thermal relay have special specifications such as cylindrical or U-shaped, which makes it necessary to install additional wires later. or wiring block, the contact surface of the wire or the wiring block is in contact with the uneven conductive part of the heat relay, which will greatly reduce the wiring capacity and cause poor contact. Secondly, when the heat relay cooperates with the contactor, it needs Rotating action increases the difficulty and risk of cooperation. In addition, in order to ensure the consistency and stability of the cooperation, it is bound to increase the requirements for product cooperation accuracy during design, which also increases the dimensional accuracy requirements of related components, thereby increasing Manufacturing cost

Images