Electromagnetic relay and assembling method of electromagnetic unit thereof

Abstract

The invention relates to an electromagnetic relay and an assembling method of an electromagnetic unit thereof. The electromagnetic relay comprises a shell block, an electromagnetic unit and a switch unit, wherein the electromagnetic unit is provided with a magnetic coil holder set, at least one coil assembly and at least one pair of wire wrap end pins. The assembling method comprises the following steps of: firstly, penetrating the wire wrap end pins through the coil holder set and arranging in parallel along the direction of a minor axis of the coil holder set; then winding the coil assembly to the coil holder set by taking one of the two wire wrap end pins as the starting end of the coil assembly, and bending the wire wrap end pins along the direction of a long axis by taking the other wire wrap end pin as a terminating end of the coil assembly; and finally, clamping the switch unit and the electromagnetic unit into a whole and encapsulating in the shell block. Thereby, the volume of the electromagnetic unit is reduced by the concealed wire wrap end pins, and the goal of automated assembling work is achieved by an assembling mode of bending and clamping.

Description

technical field [0001] The invention relates to an electromagnetic relay, in particular to an electromagnetic relay which utilizes electromagnetic action to transmit control signals and an assembly method of the electromagnetic unit thereof. Background technique [0002] refer to figure 1 , figure 2 , taking the electromagnetic relay 1 of US Patent No. 4881053 as an example, it mainly includes a shell base 11 , and an electromagnetic unit 12 and a switch unit 13 packaged in the shell base 11 . The electromagnetic unit 12 has a wire frame 121, two pairs of wire winding pins 122 passing through two opposite sides of the wire frame 121, passing through the other two opposite sides of the wire frame 121 and connecting with the pair of wire winding pins 122 respectively. Two pairs of conductive pins 123, and a coil group 124 wound on the bobbin frame 121 with one of the winding pins 122 as the starting end and the other winding pin 122 as the ending end. The switch unit 13 ha...

AI Technical Summary

Problems solved by technology

[0004] However, since the pair of wire winding pins 112 pass through two opposite sides of the wire frame 111, the terminal base 131 must relatively expand the overall volume in order to embed the entire set of electromagnetic units 12, and the electromagnetic unit 12 There is no engagement design with the terminal base 131, and it is easy to shake, resulting in misalignment between the pair of conductive pins 123 and the pair of conductive terminals 134

[0005] What is important is that in the case where the aforementioned common connection terminal 132, conductive terminal 133, and conductive terminal 134 are respectively embedded on the two sides of the terminal base 131 and do not protrude from the terminal base 131, it is necessary to manually place the joint on the aforementioned common connection terminal 131. The terminal 132, the conductive terminal 133, and the conductive terminal 134 are used for welding the solder joints, which not only consumes processing time and manpower, but also fails to increase production capacity.

Images