Binding post apparatus without screw thread

Abstract

The invention provides a binding post apparatus without a screw thread. The apparatus comprises a main body and a pressure plate. A conductive member, an elastic member and a withdrawing wire member are packaged in a cavity of the main body, and a plug wire hole and an unweaving wire hole communicate with the cavity respectively. Both the elastic member and the withdrawing wire member are provided with at least one arc part used for providing elastic compacting force to a lead and one latching end used for compacting and locking the lead respectively. When the lead is inserted in place through the plug wire hole, the lead extrudes a first arc part and a first latching end of the elastic member, and a second arc part and a second latching end of the conductive member respectively, and elastic deformation of the elastic member and the conductive member act on elasticity compacting force of the lead, wherein directions of the first arc part and elasticity compacting force of the first latching end are same, directions of the second arc part and compacting force of the second latching end are same, and a composite force direction of the first arc part and a composite force direction of the second arc part are opposite. The binding post apparatus without a screw thread can be applied to wire connection of a thick or thin lead, contact resistance is small, temperature rise is small,and wiring reliability that the lead will not be drawn out accidentally is raised.

Description

technical field [0001] The invention relates to a wire terminal device suitable for electrical equipment with a rated voltage not greater than 250V and a rated current not greater than 16A, especially a threadless terminal device used in a wall switch or socket, which is suitable for thicker wires , is also suitable for thinner wires. Background technique [0002] In order to improve work efficiency and reduce installation costs, a widely used screwless terminal device structure has emerged. There is a reed inside the wiring hole, and the stripped wire end can be directly inserted into the wiring hole to complete the wiring without using screwdriver tool. There are also some switches or sockets that use screwless terminal device structures on the market, but due to structural limitations, the wiring range of these products is limited to 1.0mm 2 -2.5mm 2 wire or 1.5mm 2 -4.0mm 2 wires, and cannot be applied to 1.0mm 2 -4.0mm 2 Wiring requirements for wires of various t...

AI Technical Summary

Problems solved by technology

If the wiring range is extended to 1.0mm 2 -4.0mm 2 , the temperature rise index of the prior art terminal can not meet the standard requirements

According to mechanics, for the elastic sheet pressed by one-way elastic force in the prior art, the greater the elastic deformation, the greater the elastic pressure difference. The elastic deformation-elastic pressure of the elastic sheet is designed only by selecting the parameters of the elastic sheet. Under the constraints of miniaturization conditions, it is difficult to design an ideal elastic sheet with large elastic deformation and small elastic pressure difference, which restricts the connection range of the prior art terminal block and cannot be expanded.

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