SU574786A1 - Electromagnetic relay and method of assembling same - Google Patents

Description

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The invention relates to the construction and assembly technology of electrical switching devices, the contact springs of which are fixed at one end to the rotary cortex.

The invention can be used in the development of technological processes and the design of electromagnetic relays.

The known construction and technological process of assembling electromagnetic relays of the type REV-201, REV-813, in which the contact spring is attached to the core with a screw.

In such a technology, the assembly process is very laborious and practically cannot be automated due to the soda and microblocks formed when the contact spring is screwed to the bore; product quality suffers.

Known more advanced design of the relay, for example RES10, RES15, which allow a more advanced technological process. The contact springs of these relays are attached to the bark by ripping a special protrusion made on the bark and entering the hole.

However, the assembly process is also time consuming; when the protrusion is riveted, the layer of chemical coating is disturbed and the place of riveting is painted over with paint, which sometimes flies off during operation of the relay, falls into the contact area, and the relay does not operate.

The purpose of the invention is to simplify the assembly technology.

For this, a co-tact spring at the point of connection with the bark is made with petals covering the side surfaces of the core with some tension, is mounted on the bark and the petals are welded to the side surfaces of the core.

The drawing shows the construction of the RES10 axonometry.

The electromagnetic relay contains a plastic base 1 with leads 2, a magnetic system in the form of an L-shaped housing 3, a 4 N coil of a coil 5. A contact spring 6 with a contact 7 is attached to the bark 5, and a return spring 8 and a clamp 9 are attached to the housing 3. The spring 6 is made with petals 10. Fixed coggings 11 are mounted on base 1.

The assembly of the ocyHtecTB electromagnetic relay is as follows.

A housing 3 with pre-attached coil 4, a return spring 8 and a clamp 9 is installed and secured to the base 1. Then the iodine clamp petals 9 and under the return spring 3 they pull the pin 5 and with the clamp 9 press it against the case 3.

;) From above, they put the contact spring b on top 5 so that the petals 10 cover the side surfaces of the core 5 with some tension, and the contact 7 enters the gap between the non-movable contacts 11. At the same time, by moving the contact spring 6 left-right ( in the plane of the drawing) the necessary positioning of the contact 7 is established with respect to the contacts 11. Then the petals 10 are welded to the side surfaces of the core 5, and this completes the assembly process.

The assembly of the electromagnetic relay with welding of the petals of the contact spring to the side surfaces of the core considerably simplifies the technological process of the general assembly consisting of only three operations: installations based on the magnetic system, core and contact spring, and improves the quality of the relay, since there is no need to use paint for painting over the attachment points of the contact spring.

Design tests of relays assembled according to a new technology have shown the reliability of fastening of all elements and the reduction of contact rejects.

Fore | M La Invention

Claims (2)

1. Electromagnetic relay containing a contact spring with a moving contact, fixed on the bark, characterized in that, in order to simplify the assembly technology, the contact spring at the junction with the crust is made with petals covering the lateral surfaces of the core. 2. An electromagnetic relay assembly method according to claim 1, characterized in that the contact spring is mounted on the bark, the position of the movable contact is adjusted and the petals of the contact spring are fixed on the side surfaces of the core, for example, by resistance welding.