JPS587959Y2 - polarized relay - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a polarized relay.

Conventionally, this type of polarized relay has been constructed as shown in FIGS. 1 and 2.

That is, in FIG. 1, 1 is a coil block,
A coil 4 is wound around a U-shaped iron core that is held by a support frame 2 and has both ends protruding as magnetic pole pieces 3, 3.

Further, the outer end portions of the magnetic pole pieces 3, 3 are provided so as to slightly bulge out from the end surface of the support frame 2, and engaging protrusions 5, 5 are provided on both side surfaces.

6, 6 are coil lead wires; 1 is a contact block provided with a recess 8 in which the coil block 1 can be accommodated; on the top surface, movable contact terminals 9, 9 and fixed contact terminals are arranged in two rows facing each other on both sides. 10.10 is provided protrudingly.

Further, guide grooves 11.11 for the coil lead wires 6, 6 are formed on the upper surface of both sides in the longitudinal direction of the contact block l, and coil terminals 12.12 connected to the coil lead wires are formed on the outer surface of the contact block 1 in the longitudinal direction. an upper end 12 thereof adjacent to said guide groove 11.11 below said guide groove 11.11;
The contact terminals 9, 9, 10, 10 and the coil terminal 1 are implanted so that a is exposed, and the contact terminals 9, 9, 10, 10 and the coil terminal 1 are
The lower parts of 2.12 are aligned and protruded in two rows.

Further, on the inner upper edge of the contact block 1 in the longitudinal direction, there are magnetic pole piece holding recesses 13, 13 for receiving the outer ends of the magnetic pole pieces 3, 3.
is formed, and a recess 14 for engaging the engaging protrusions 5, 5 is formed on the inner surface corresponding to the side surface on which the engaging protrusions 5, 5 are provided.
, 14 are provided oppositely.

15. 15 is a contact spring whose base is bent into an L-shape, whose free ends are formed into twin shapes, and which is fixed to the inside or outside of the movable contact terminals 9, 9 in the center according to the contact configuration. A movable contact 16.16 is fixed at the end, and is provided so as to be able to come into contact with the fixed contact terminals 10.10 near both ends.

17 is a magnetic pole piece 3 protruding from the coil block 1;
This is a bearing plate in which notches 1B and 18 are formed corresponding to 3, and a shaft 19 is implanted in the center.

Haruka is an armature block, a pair of armature 2
1.21 are provided in parallel, and a bearing piece 22 having a shaft hole 23 bored in the center through which the shaft 19 is inserted is integrated, and is spaced apart from the bearing piece 22 on both sides of the bearing piece 22, A card piece 24. is provided with a card protrusion 25.25 that protrudes outward in a direction perpendicular to the longitudinal direction of the armature 21.21 and is capable of pressing the contact spring 15.15.
24 are integrated.

The armature 21.21 also projects outwardly from the card piece 24.24 at both ends, and the pole piece 3,
It is provided so as to play with 3.

26 is a bottom plate that covers the lower surface of the recess 27 27; 28 and 28 are permanent magnets that are accommodated in the recesses 27 and 27 while sandwiching the bearing pieces 22; The lower edge of the formed cover is brought into contact with the stepped portion 31 of the contact block 1, and is crowned.

Therefore, the outer ends of the magnetic pole pieces 3, 3 are fitted into the four magnetic pole piece holding parts 13. Coil on 8
The electromagnetic relay is assembled by fitting the block 1, mounting the contact opening/closing member group consisting of the contact spring 15° 15, the bearing plate 17, the armature block 20, etc., and covering the case 29. By energizing, the armature block can be rotated to open and close the movable contact 16.16 of the contact spring 15.15.

However, in the polarized relay having the above structure, as shown in FIG. The cut and bent base of the contact spring 15 is fixed to the upper ends of the movable contact terminals 9 by welding.

After that, the bridging portion 15' formed in the center of the contact spring 15 shown by the broken line is cut, and the contact springs 15 and 15 are separated from each other.
In this case, the contact spring 15 is formed separately.
The base of the movable contact terminal 9.9 is brought into contact with the upper end of the movable contact terminal 9.9, and considerable force is applied from both sides as shown by the arrows to the joint surface. Due to conditions, etc., variations in dimensional accuracy are likely to occur, and the contact spring 15 is also easily deformed.
This has been accompanied by drawbacks such as variations in contact pressure, poor chattering, and poor contact resistance.

The object of the present invention is to provide a polarized relay that improves the above-mentioned drawbacks.

Hereinafter, the polarized relay of the present invention will be explained along with the drawings.

Figures 3 to 6 show embodiments of the present invention.
In the figure, 33a is an operating spring block, and this operating spring block has a U-shaped bridge portion 15a extending upward.
After molding a molded product 34a at the same time on the bases of the contact springs 15a, 15a which are integrally connected by
The contact springs 15a, 15a extending in opposite directions from the side end surfaces of the molded product 34a are insulated and separated by cutting off the upper part of the bridge portion 15a' protruding from the upper end surface of the molded product 34a. .

The molded product 34a has a raised portion 9a.

A pair of grooves 3 for inserting retaining portions 9b, 9b having 9a into movable contact terminals 9c, 9c, which are expanded at the upper part.
5a and 35a are formed.

The grooves 35a, 35a are, as shown in FIG.
A groove 35C whose cross section is approximately rectangular and is integral with the groove 35b and has a width slightly wider than the width of the upper part of the groove 35b.
It is formed in a so-called undercut shape.

Therefore, the operating spring block 33a is connected to the movable contact terminals 9c, 9 through the grooves 35a, 35a.
As the terminals 9c and 9c are inserted into the grooves 35, the engaging portions 9b and 9b of the terminals 9c and 9c are inserted into the grooves 35 due to the undercut.
C, 35C, and the operating spring block 33
a is fixed to the movable contact terminals 9 c and 9 c.

In this case, since the raised parts 9a, 9a raised on the retaining parts 9b, 9b have spring properties, as shown in FIG. Item 34
Contact springs 1 disposed in grooves 35 a and 35 a of a
The operating spring blocks 33a are electrically connected to the bases of the terminals 9c, 15a, and are securely fixed to the terminals 9c, 9c by their spring force.

FIG. 6 shows the operating spring block 34a connected to the terminal 9c.
, 9c is shown attached.

Note that the configuration and assembly of other parts are the same as in the case of FIG. 1.

As described above, according to the present invention, in order to fix the contact spring to the terminal board, it is sufficient to simply insert the operating spring block into the terminal, and (a) variation in dimensional accuracy is reduced (c) deformation of the contact spring, etc. (c) Therefore, the quality of contact pressure etc. is stable (ii)
This has practical effects such as improved assembly workability and cost reduction.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of a conventional polarized relay, Fig. 2A is a partially assembled explanatory diagram, the mouth view is a top view of the same, Fig. 3 is a partial perspective view of the polarized relay of the present invention, and Fig. 4 is FIG. 5 is a partial side sectional view, FIG. 5 is a top view, and FIG. 6 is a partially assembled explanatory view. 1... Coil block, 2... Support frame, 3... Magnetic pole piece, 4... Coil, 5...
...Engaging protrusion, 6...Coil leader wire, 7
...Contact block, 8...Recess, 9,
9C...Movable contact terminal, 9a...Elevated portion, 9b...Engagement portion, 11...Guide groove, 12...・Coil terminal, 13...
Magnetic pole piece holding recess, 14... recess for outstanding person, 15,
15a...Contact spring, 15', 15a'...
...Bridging part, 16...Movable contact, 17...
... Bearing plate, 18 ... Notch, 19 ...
...Axis, 20...Armature block, 2
1... Armature, 22... Bearing piece, 23... Shaft hole, 24... Card piece, 25... Card projection , 26... Bottom plate, 27... Recess, 28... Permanent magnet, 29... Cover, 30... Receiving part, 3
1... Step part, 32... Electrode, 33 a
...Moving spring block, 34a... Molded product, 35 a, 35 b, 35 C-groove.

Claims (1)

[Scope of utility model registration request] In a polarized relay, a coil block is disposed within a terminal block to which a movable contact spring is fixed, and an armature block is rotatably mounted on the coil block via a bearing plate having a shaft. A contact spring 15a that is integrally connected by a cuttable bridging portion 15a' and can be separated left and right, and a groove 35b whose width narrows upwardly formed at the same time at the base of this contact spring 15a. An operating spring block 33 consisting of an insulating molded surface 34a having a pair of grooves 35a which are connected to the upper part of the groove 35b and have a slightly wider width 35C. The base of the contact spring 15a in the groove 35a is inserted into the movable contact terminal 9C, which has a swollen retaining part 9b with a raised part 9a having spring properties on the upper part. and the movable contact terminal 9C are electrically connected to each other, and the operating spring block 33a is fixed to the movable contact terminal 9C.