CN202307716U

CN202307716U - Electromagnetic switch

Info

Publication number: CN202307716U
Application number: CN2011203805199U
Authority: CN
Inventors: 程星海; 程云霞
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-10-10
Filing date: 2011-10-10
Publication date: 2012-07-04
Anticipated expiration: 2021-10-10

Abstract

The present utility model relates to an electromagnetic switch, especially to an electromagnetic switch used in an automobile starter. The switch comprises a coil, a moving iron core, a push rod and other parts, a hook of the electromagnetic switch is connected with the moving iron core, a gasket is arranged on a connecting part of the hook and the moving iron core, a step-shaped inner hole is arranged on the middle of the moving iron core, the push rod is arranged in the inner hole of the moving iron core and stretched out of the inner hole, a return spring is arranged on the push rod of the inner hole, a contacting copper nail is arranged on a part of the push rod, which is stretched out of the inner hole, a separating spring is arranged on the end part of the push rod, and the contacting copper nail is arranged on a position of a switch box, which is opposite to a contacting copper plate. Compared with the prior art, the electromagnetic switch is compact in structure and small in volume, and contacts are easily cut off and not easy to bond.

Description

Electromagnetic switch

Technical field

The utility model relates to a kind of electromagnetic switch, especially a kind of electromagnetic switch that is used on the automobile starter.

Background technology

At present, automobile starter is used electromagnetic switch, and is different with the connected mode of moving iron core according to the push rod of electromagnetic switch, is divided into two kinds of different structural forms: a kind of is split type, and a kind of is integral type.Its push rod of split type switch and moving iron core are two independently parts; Compact on the structure of assembling back; Size is short and small, but the separation of contact mainly leans on the counter-force of contact separation spring to realize, because this spring is less; The strength that the contact is broken off is less, occurs the phenomenon that the contact adhesion is broken not open easily.The push rod and the moving iron core of another kind of integrated switch are combined into a part, and contact separation is mainly leaned on the counter-force of return spring, and its strength is bigger, help the contact and break off, and are not prone to the contact adhesion phenomenon, and it is long that shortcoming is exactly the more split type switch of total length.

Summary of the invention

The technical assignment of the utility model is to above weak point, provides a kind of simple in structure, easy to operate, and switch contact is difficult for adhesion, the electromagnetic switch that overall dimensions is less.The utility model solves the technical scheme that its technical problem adopted: the utility model comprises parts such as coil, moving iron core, push rod; The hook of electromagnetic switch is connected with moving iron core; Hook is provided with packing ring with moving iron core junction, and the endoporus of step shape is set in the middle of the moving iron core, and push rod is arranged in the endoporus that moves iron core and reaches outside the endoporus; On the push rod at endoporus position, return spring is set; Push rod stretches out on the part of endoporus the contact fastener is set, and the push rod end is provided with cut spring, and the contact fastener is arranged on the switch dress box and the corresponding position of contact copper coin.Described moving iron core endoporus is the thick middle thin stepped holes in two ends.

The utility model is compared with prior art, has following characteristics: one, the utility model design science is reasonable, and cost is low, moves in the iron core endoporus because a push rod part is arranged on, so compact short and small on the product overall dimensions; Two, the utility model helps the disconnection of contact owing to used return spring, has solved the contact adhesion phenomenon.

Description of drawings

Further specify below in conjunction with 1 pair of the utility model of accompanying drawing.

Accompanying drawing 1 is the structural representation of electromagnetic switch.

Among the figure: 1, moving iron core, 2, push rod, 3, packing ring, 4, hook, 5, return spring, 6, cut spring, 7, contact copper coin, 8, the contact fastener.

Embodiment

With reference to explanation at length below the electromagnetic switch work of 1 pair of the utility model of Figure of description.

The utility model mainly comprises parts such as coil, moving iron core 1, push rod 2.The hook 4 of the utility model is connected with moving iron core 1; The endoporus of step shape is set in the middle of the moving iron core 1, push rod 2 is penetrated in moving iron core 1 stepped hole by prescribed direction, hook 4 adds a packing ring; Moving iron core 1 connects and assembles with push rod 2; Press into as a whole, make push rod 2 and moving iron core 1 can as the moving iron core of integrated switch motion simultaneously, again because push rod 2 in moving iron core 1 endoporus with link up with 4 certain interval arranged; The sound contact distance is designed by split type switch, dwindled the overall dimensions of switch so again.Push rod 2 is in the endoporus that is arranged on moving iron core 1 part; Some reaches outside the endoporus; On the push rod 2 at endoporus position, return spring 5 is set; Push rod 2 stretches out contact copper coin 7 is set on the part of endoporus, and push rod 2 ends are provided with cut spring 6, and contact fastener 8 is arranged on the switch dress box position corresponding with contact copper coin 7.Described moving iron core 1 endoporus is the thick middle thin stepped holes in two ends.

The utility model in use, after switch energising, coil produces magnetic field; Moving iron core 1 receives the effect of magnetic force, move forward, push rod 2 with link up with 4 terminations and contact after; Moving iron core 1 will drive push rod 2 and together advance, and contact copper coin 7 is to be assembled on the push rod 2, therefore also together advances; Contact with the fastener 8 that contacts in the switch assembling box, big electric current is passed through.When deenergization, moving iron core 1 is retreated rapidly under the effect of return spring 5; Cut spring 6 also promotes push rod 2 and retreats; But strength is less, when moving iron core 1 retreat to stepped hole when step on the push rod 2 contacts, moving iron core 1 spurs push rod 2 and together retreats under the effect of return spring 5; Thereby contact copper coin 7 is separated with contact fastener 8 fully, accomplish and all work.

Each equipment or the parts and the interconnecting or cooperating between them that constitute this device all can be adopted prior art or other possible technology.

Claims

1. electromagnetic switch; Comprise coil, moving iron core (1), push rod (2), it is characterized in that hook (4) is connected with moving iron core (1), hook (4) is provided with packing ring (3) with moving iron core (1) junction; The endoporus of step shape is set in the middle of the moving iron core (1); Push rod (2) is arranged in the endoporus of moving iron core (1) and reaches outside the endoporus, on the push rod (2) at endoporus position, return spring (5) is set, and push rod (2) stretches out on the part of endoporus contact copper coin (7) is set; Push rod (2) end is provided with cut spring (6), and contact fastener (8) is arranged on the switch dress box and the corresponding position of contact copper coin (7).

2. electromagnetic switch according to claim 1 is characterized in that described moving iron core (1) endoporus is the thick middle thin stepped holes in two ends.