JPS6326902Y2 - - Google Patents

Description

[Detailed explanation of the idea] This idea concerns relays.

The relays that form the basis of this invention are shown in Figures 1 to 6. That is, this relay consists of a terminal (base) block 1 and a coil block 2, and the terminal block 1 has a pair of U-shaped yokes 3,
The intermediate part of the yokes 3 and 4 is embedded, and both end parts protrude upward, and a permanent magnet 5 is interposed between the intermediate parts to generate different magnetic poles in each of the yokes 3 and 4. A pair of fixed contact plates 6 to 9 are provided upright at one end of both sides of the terminal block 1, respectively, and the fixed contact plates 6 to 9 are provided on opposite sides of the fixed contact plates 6 to 9.
a to 9a, common terminal plates 10 and 11 are provided upright approximately at the center of both sides of the terminal block 1, and two-piece spring type movable contact springs 12 and 1 are installed on the common terminal plates 10 and 11.
Attach the proximal end of No. 3 and attach the movable contact 12 to the distal end.
a, 12b, 13a, 13b are provided and located between each fixed contact plate 6, 7 and 8, 9. Furthermore, coil connection terminal plates 14 and 15 are provided upright at the other ends of both sides of the terminal block 1, and are connected to the fixed contact plates 6 to 9 and the terminal plates 10, 11, 14, and 15, and terminals 16 are provided below the block. ...is installed vertically.

The coil block 2 has a coil 17 wound around its peripheral body, a T-shaped armature 18 passed through its cavity, and one end of which is rotatably supported on a support ridge 19 formed at the open end of the cavity. , a card 20 is attached to the other end of the armature 18. This coil block 2 is fitted into the central recess of the terminal block, and the coil end of the coil 17 is connected to the coil terminal plate 1.
4 and 15, and both ends of the card 20 are engaged with the movable contact springs 12 and 13. 21 is a cover.

In this relay, when the coil 17 is not energized, the permanent magnet 5 causes magnetic poles of the same strength to appear at both ends of each yoke 3, 4, so the armature 18 can rotate in either direction about the support ridge 19. ,
When its tip approaches one of the yokes 3 and 4, for example, when the tip of the armature 18 approaches one end of the yoke 4, the other end of the armature 18 approaches the other end of the yoke 3, causing the permanent magnet 5 to act as a magnetomotive force. A magnetic circuit is formed by the yokes 3, 4 and the armature 18 to maintain the attracted state, and even if the armature 18 rotates in the opposite direction, the same stable state is achieved.

On the other hand, the coil 17 is energized and the armature 18
When a magnetic flux is passed in the opposite direction to the magnetic flux passing through the armature 18, a repulsive force is generated and the armature 18 rotates in the opposite direction, and even when the power is turned off, a stable state is maintained by the permanent magnet 5.

However, this relay has armature 1
8 is supported by the support ridge 19 of the coil block 2, the magnetic characteristics of the relay, which is greatly affected by the positional relationship between the armature 18 and the yokes 3 and 4, are supported by the base block 1 of the coil block 2.
This has the disadvantage that the positional relationship between the armature and yoke cannot be stably obtained when assembling the coil block and terminal block, and the magnetic properties are also unstable and vary.

Therefore, an object of this invention is to provide a relay that reduces variations in the magnetic characteristics of the relay and is easy to assemble.

The first embodiment of this invention is shown in Figures 7 to 13.
As shown in the figure. That is, in this monostable relay, the portion consisting of the yokes 3 and 4 and the permanent magnet 5 of the terminal block 1 of the relay in FIGS. 1 to 6 is separated as a yoke block 22, and this yoke block 22 is a For stability (single), one yoke 4' is made into an L-shape, and instead a protrusion 23 is formed by molding synthetic resin, and a holding part 24 that holds the end of the yoke 3 facing this protrusion 23 Opposing support ridges 25 and 26 are formed to rotatably support one end of the armature 18, and the coil block 2 is held at the intermediate portion of the yoke block 22, and this yoke block 22 is attached to the base block. 1 in the recess 1a.

The rest is the same as in Figs. 1 to 6.

With this structure, when the coil block 2 is held by the yoke block 22 with the armature 18 loosely inserted into the coil block 2, and at the same time one end of the armature 18 is supported by the support ridges 25 and 26, the first Unlike the cases shown in Figures 6 to 6, the magnetic characteristics of the relay are independent of the positional relationship of the coil block 2, and only the positions of the yokes 3, 4' and the armature 18, so the magnetic characteristics do not vary during assembly and are stable. At the same time, assembly and overall adjustment become easier.

A second embodiment of this invention is shown in FIG. That is, in this relay, the support protrusions 25 and 26 in the first embodiment are removed, and the distance between one end of the yoke 3 and the protrusion 23 is changed so that the tip of the armature 18 is spaced between the opposing parts of the yokes 3 and 4'. The armature 18 is loosely fitted within a swingable range, and the free movement of the armature 18 causes it to be attracted to the yokes 3, 4'.

The rest is the same as the first embodiment, and since the gap between the armature 18 and the yokes 3, 4' is not affected by the coil block 2, the same effect as in the first embodiment is obtained.

The third embodiment of this invention is shown in Fig. 15 and 1.
It is shown in Figure 6. That is, in this relay, the yoke block 22' is replaced by two U-shaped yokes 27 and 28, whereas the first embodiment is a single type.
This is a bistable latching structure in which the armature 18 is stabilized by the permanent magnet 5 no matter which way it rotates, and is otherwise the same as the first embodiment and has the same effects.

As described above, in the relay of this invention, the coil block is held by the yoke block, and the armature that passes through the coil block is rotatably supported by the yoke block, so variations in magnetic characteristics can be reduced and stability can be achieved. This makes assembly easier. In addition, compared to a structure in which the armature is supported by a rotating shaft and the yoke block is constructed from one yoke and four permanent magnets, the number of parts is reduced and the cost is reduced.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional plan view of the relay that is the basis of this invention, Fig. 2 is a cross-sectional view taken along the - line, Fig. 3 is a cross-sectional view taken along the line shown in Fig. 1, and Fig. 4 is a cross-sectional view taken along the line taken from Fig. 1. Fig. 5 is a sectional view taken along the line of Fig. 1, Fig. 6 is a sectional view taken along the line taken from Fig. 1, and Fig. 7 is a sectional view taken along the line of Fig. 1.
FIG. 8 is an exploded perspective view, FIG. 9 is a cross-sectional plan view, and FIG. 10 is a cross-sectional view along the - line.
Figure 11 is a sectional view taken along the line XI-XI of Figure 9, Figure 12 is a sectional view taken along the line XII-XII of Figure 9, and Figure 13 is a sectional view taken from Figure 9-
A line sectional view, FIG. 14 is a principle diagram of the second embodiment,
FIG. 15 is a principle diagram of the embodiment shown in FIG. 3, and FIG. 16 is an exploded perspective view. 1...Terminal block, 2...Coil block,
3, 4', 27, 28... Yoke, 5... Permanent magnet, 6-9... Fixed contact plate (contact part), 12, 1
3...Movable contact spring (contact part), 17...Coil,
18... Armature, 20... Card, 22,
22'...Yoke block, 25, 26...Support protrusion.

Claims (1)

[Claims for Utility Model Registration] (1) A coil block around which a coil is wound, a yoke block in which the coil block is held and is constituted by two yokes and a permanent magnet, and the coil block is A relay comprising an armature that is loosely inserted and rotatably supported between two yokes of the yoke block, and a card that is attached to the armature and drives a contact portion. (2) The relay according to claim 1, wherein the armature is rotatably supported by the yoke block. (3) The relay according to claim 1, wherein the armature is loosely fitted between the yokes of the yoke block.