Magnetic latching relay with symmetrical transmission structure

Abstract

The invention discloses a magnetic latching relay with a symmetrical transmission structure, which comprises a pushing part. The pushing part comprises an armature part, a transmission piece and a pushing clamp. One end of the transmission piece is clamped in a clamping groove at one end of the pushing clamp. The other end of the pushing clamp is matched with a movable spring assembly. The transmission piece rotates around an axle center, which passes through the clamping groove of the pushing clamp matched with the transmission piece from an action state to a return state of the relay, is positioned at the middle point of the displacement in the effective movement direction and is vertical to any point on a straight line in the effective movement direction. The axle center is provided with a rotating shaft. The rotating shaft is positioned and arranged on a shell. The other end of the transmission piece is matched with the armature part. After the magnetic latching relay adopts the structure, for a cantilever rotating magnetic circuit, the problem of unbalance of mechanical parameters in the actuating and return states of the relay in the actuating and return states, which is caused by displacement of the pushing clamp in the ineffective movement direction, can be solved, and the performance stability of a product is promoted; and for a direct-action type magnetic circuit, the aim of solving the problem on relation between the capacity and the volume of the relay so as to make the structure of the product more compact and make performance of the product more stable is fulfilled.

Description

technical field [0001] The invention relates to an electromagnetic relay, in particular to a magnetic holding relay with a symmetrical transmission mechanism. Background technique [0002] The magnetic latching relay is a new type of relay developed in recent years, and it is also an automatic switch. Like other electromagnetic relays, it can automatically switch on and off the circuit. The difference is that the magnetic latching relay is a bistable relay that still maintains the state of the excitation after the excitation amount is removed. [0003] The structure of the existing magnetic latching relay usually consists of a magnetic circuit system, a contact system, a driving part and a housing. The magnetic circuit system includes magnetically conductive parts (yokes, iron cores) and coils, the contact system includes a moving spring assembly and a static spring assembly, and the pushing part includes an armature part and a pushing card. When the relay coil passes a p...

AI Technical Summary

Problems solved by technology

The movement trajectory of the rod portion 121' of the armature part 12' and the card slot 10' that is engaged with the push card 16' is asymmetrical with respect to the longitudinal axis, and the push card 16' has displacements in the horizontal and vertical directions, and the magnetic circuit system acts on the push card. The length of the force arm of the card 16' is different, that is, the distance a' and the distance b' in the figure are not equal, which makes the mechanical parameters of the pushing mechanism of the relay asymmetric during the action and return process, and finally affects the breaking force of the contact, causing The electrical parameters are unbalanced, increasing power consumption and causing the performance of the relay to be very unstable

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