A low pressure injection molding magnetic proximity switch

Abstract

The invention relates to the technical field of magnetic proximity switches, in particular to a low-pressure injection molding magnetic proximity switch, which comprises a plastic box, a reed switch and an inlet and outlet lead, wherein an opening is formed in the upper end of the plastic box; two threading slots are formed in the right end wall of the plastic box; a wire fixing pinch plate is arranged at the inner side of the left end wall of the plastic box; the wire fixing pinch plate is matched with the lateral wall of the plastic box to form a wire fixing opening; the inlet and outlet lead is electrically connected with two pins of the reed switch respectively; one pin of the reed switch is fixedly arranged in the wire fixing opening; and the inlet and outlet lead is transversely led out from the corresponding threading slot. The low-pressure injection molding magnetic proximity switch is reasonable in structure; one pin of the reed switch is integrally connected with the lead through a rivet; the electric connection strength is high; and the performance is stable. The rivet at one end of the reed switch is arranged in the wire fixing opening in a penetrating manner; the other end of the reed switch is limited through the positions of a wire clamping hole and a rib plate, so that the assembly position of the reed switch in an inner cavity of the plastic box is reasonable; a low-pressure injection molding process is achieved; and the impact strength and the electrical stability of the reed switch can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of magnetic proximity switches, in particular to a low-voltage injection-molded magnetic proximity switch. Background technique [0002] Reed switch magnetic proximity switch is an on-off control switch that can realize non-contact magnetic triggering between two contacts of reed switch. Its reliability has been fully verified and it has been widely used as a safety control component. The reed switch is a fragile glass tube product, which is relatively easy to be damaged during the manufacturing and transportation process, resulting in switch failure, direct connection and other quality hazards. For this reason, the magnetic switch mostly adopts structural interference design, so that the reed switch can be effectively supported in the magnetic switch, thereby improving the accuracy of injection molding and improving the processing efficiency. [0003] For example, the magnetic proximity switch structure di...

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Problems solved by technology

[0004] The above scheme is mainly aimed at the purpose of fixing the reed switch in the plastic box and positioning it with glue, and does not fully consider the stability of the connection structure between the reed switch and the lead wire, and the weather resistance and reliability of the magnetic switch are not good.

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