JPS62140329A - Electromagnetic relay - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to electromagnetic silk appliances.

[Conventional technology]

Conventionally, in this type of π electromagnetic relay, as shown in FIG. (not shown), and a fixing pin 142 provided at the bottom of the rear flange portion 10 of the coil assembly is inserted and fixed into a hole portion (not shown) of the contact spring assembly 8. was. The coil block, which is constructed by inserting the iron core 5 and yoke 6 into the coil assembly 7, is assembled into the contact spring assembly 8 having the movable contact spring 12 and the terminal 13 as described above, and the magnetic pole plate 2a , 2b
A contact spring driver 4, which includes a permanent magnet and a permanent magnet, is fitted from above. A relay is constructed by covering the cover 1 from above. The contact blade driver 4 is held by two guides 9 provided on the front flange portion 11 of the coil assembly 7 so as to be slidable laterally. When the coil 71 of the coil assembly 7 is energized, magnetic poles are generated at the end of the iron core 5 and the end of the yoke 6 connected to the iron core 5. An attractive force that acts between these magnetic poles and the magnetic poles that are generated in advance on the magnetic pole plates 2a and 2b due to the magnetic flux of the permanent magnet 3.

Due to the repulsive force, the contact spring driver 4 suppresses and opens the movable piece, the movable contact spring 12, in the above-mentioned sliding direction, thereby opening and closing the contact circuit.

[Problem that the invention seeks to solve]

However, in this type of electric/sand clamping device described above, the movable contact spring 12. The dimensional relationship between the terminal 13, the yoke 6, and the iron core 5 depends on the fixing pins 141 and 142. In particular, the fixing pin 141 passes through the hole 61 of the yoke, but since the yoke hole 61 is located in the middle of the magnetic flux path generated by the coil 71, it cannot be made large, so the size of the fixing pin 1410 that passes through it is also limited. . For this reason, the above-mentioned dimensional stability was compromised, and sufficient assembly strength could not be obtained, requiring additional work such as heat caulking of the fixing pins 141 and 142.

[Failure to solve the problem]

Den@Silk of the present invention:'r11; The device includes a front flange portion having legs extending downward and outward from the lower portions of both ends, and a rear flange portion having a groove portion provided laterally in the lower portion; A coil assembly including a coil wound around the periphery and an iron core penetrated through the center; a yoke fittingly connected to the iron core; a contact spring having a movable contact; and the forward flange portion. a contact spring assembly having a lateral protrusion that fits into the foot portion of the flange, and a lateral protrusion that press-fits into a groove of the rear flange portion; a permanent magnet; and both magnetic poles of the permanent magnet. and a contact spring driver for driving the contact spring, the contact spring driver having a magnetic pole plate fixed to the contact spring.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

Referring to FIGS. 1A and 1B, a coil assembly 7 according to an embodiment of the present invention has legs 15 extending downwardly and outwardly from the bottom of both ends of the front flange portion 11.
and a protrusion 17 provided at the lower center, and a groove 19 in the rear flange 10. Furthermore, the contact barb assembly 8 in one embodiment of the present invention has a protrusion 16 on its inner wall surface that fits into the foot part, and a protrusion part 19 at the rear end part.
It has a protrusion 18 that is inserted into and fitted into. The yoke 6 is press-fitted between the two legs 15 of the coil assembly 7, and the coil assembly 7 is moved in the direction of the arrow so that the legs 15 fit into the projections 16, and the yoke 6 , coil assembly 7. and a contact barb assembly 8 is secured at the front flange portion 11. It's the rear flange part 10.
, the coil assembly 7 is moved in the direction of arrow B in the figure, and the groove 19 and the projection 18 at the rear of the contact spring assembly 8 are fitted and fixed. At this time, the yoke 6 is attached to the coil assembly 7.
Since the coil assembly 7 is fixed by caulking with the iron core 5 which is press-fitted into the coil assembly 7, it is indirectly fixed to the coil assembly 7.

As is clear from the fixed state shown in FIG. 2, the following points are effective in improving assembly dimensional accuracy.

(1) The protrusion 17 provided on the pillar body 7 ensures parallelism when the yaw and 5-axis 6 are fixed.

(2) Since the projection 16 on the inner wall of the contact spring assembly 8 is press-fitted into the leg 15 of the coil assembly 7 so as to press the side surface of the yoke 6, the leg 15 of the coil assembly 7 is less likely to deform. , the reference dimensions become stable.

(3) A yoke because the protrusion 81 on the inner bottom of the contact spring assembly 8 presses the yoke 6 against the coil assembly.

The relative dimensions of the coil assembly and contact spring assembly are stable.

〔Effect of the invention〕

As described above, the present invention fixes the yoke and press-fits the contact barb assembly with the feet provided at the lower part of the front flange of the coil assembly, and Since the groove provided in the contact spring assembly and the protrusion at the rear of the contact spring assembly are press-fitted and fixed, it is possible to realize an electromagnetic relay that is easy to assemble and has high assembly accuracy.

[Brief explanation of drawings]

1A and 1B are partially exploded perspective views showing the assembled state of the coil assembly, yoke, and contact spring assembly in one embodiment of the present invention, and FIG. 2 shows the assembly of each member shown in 1AI%. FIG. 3 is a cross-sectional view of the assembled state, and a perspective view of a conventional electromagnetic relay. 1...Cover, 2a, 2b...Magnetic pole plate, 3...Permanent magnet, 4...Contact spring driver, 5...Iron core, 6... York, 7...
...Coil assembly, 8...Contact spring assembly,
9...Contact spring driver holding part, 10...
・Rear flange part, 11...Front flange part,
12...Contact spring, 12a...Contact, 13
...Terminal, 141.142...Fixing pin, 15...Foot, 16...Protrusion, 17
...Protrusion, 18...Protrusion, 19...
... Groove. ,,/'dehe・ −゛Δ−

Claims (1)

[Claims] A front flange portion having legs extending downward and outward from the bottom of both ends, a rear flange portion having a groove portion provided laterally in the bottom portion, and a coil wound around the front flange portion. and,
a coil assembly including an iron core penetrated through the center; a yoke fittingly connected to the iron core; a contact spring having a movable contact; and a lateral portion fitting with the foot portion of the front flange portion; a contact spring assembly having a lateral protrusion and a lateral protrusion press-fitted into a groove of the rear flange; a permanent magnet; and a magnetic pole plate fixed to both magnetic poles of the permanent magnet; An electromagnetic relay comprising: a contact spring driver for driving a contact spring;