JPH089870Y2 - relay - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a relay, and more particularly to a relay having a high insulating property.

[Conventional technology]

Conventionally, this type of relay is disclosed in JP-A-55-6716.

In FIGS. 4 (a), (b), and (c), 21 is a substantially U-shaped iron core that is inserted into a coil frame 20a around which a coil 20 is wound. Both ends of which are hinge-engaged. A card 23 made of an insulating material is attached to an intermediate portion of the amateur 22. A movable contact spring 30 has fixed contacts 32 and 32 at one end.
And the other end is fixed to the base 24. The base 24 houses and arranges the above-mentioned components, and is made of a substantially box-shaped insulating material as a whole. Reference numeral 25 denotes a partition wall projecting from the bottom of the base 24, which is provided between the contact portion and the coil portion.

[Problems to be solved by the invention] In the relay described in the conventional example, the partition wall 25 provided between the contact part and the coil part improves the insulation property to some extent between the two parts. Is low so coil 20
And a part of which is very close to the iron core 21 and the amateur 22, the partition wall 25
Over and over to project from the coil to the contact,
Since the iron core 21 and the armature 22 which are metal parts are interposed between the coil 20 and the contact portion, the insulation distance between the coil 20 and the contact portion is substantially reduced, and the insulation becomes worse as the size is reduced. was there.

The present invention has been made in view of the above problems and has been improved. An object of the present invention is to provide a relay having a high insulation property even if it is downsized.

[Means for solving the problem]

In order to solve the above-mentioned problems, the present invention provides an insulating wall between a coil chamber having a base coil and a magnetic pole portion, and an insulating wall between the contact chamber having other metal parts, and the iron core is coiled in the coil chamber. I try not to expose it from the frame.

Further, a part of the insulating wall is formed by a flange portion of the coil frame from which the magnetic pole portion of the iron core projects.

[Action]

An insulating wall is provided between the coil chamber having the base coil and the magnetic pole portion, and an insulating wall is provided between the contact chamber having other metal parts to increase the insulation distance between the coil and the contact portion, and the iron core is provided in the coil chamber. By not exposing the coil frame, the insulation between the coil and the iron core communicating with the contact chamber is improved.

Further, by forming a part of the insulating wall by the flange portion of the coil frame from which the magnetic pole portion of the iron core projects, the insulation between the iron core and the coil is further enhanced.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

1 to 2 (a), (b), (c) and (d) respectively show an embodiment of the present invention. This relay includes a coil block 1, a permanent magnet 3 and an armature. It is composed of a block 4, a base 8 and a case 11.

The coil block 1 includes an iron core 2 made of a substantially U-shaped metal magnetic body, and a coil frame formed by winding the coil 1 and integrally attached to the middle of the iron core 2 and made of an insulating material such as synthetic resin. It is configured. As shown in FIG. 1 (c), the iron core 2 is bent at a portion integrally formed with the coil frame, and the magnetic pole portions 2a, 2a are laterally extended from the collar portions 1a, 1a of the coil bottom portion.
Is protruding. Extension portions 1b, 1b are provided at the portions of the collar portions 1a, 1a where the iron core 2 projects so that the insulation distance between the projecting portion of the iron core 2 and the coil becomes large.

The permanent magnet 3 has a cubic shape and is magnetized to have the same pole (for example, S pole) at both ends and the opposite pole (for example, N pole) at both ends so that both ends are magnetically arranged between the magnetic pole portions of the iron core 2. Is bound to.

Both ends of the amateur block 4 are magnetic poles of the iron core 2
The armature 5 is composed of a metal magnetic body, which is rotatably supported by a support body 6 and has an intermediate portion facing the 2a and 2a, and a movable contact spring 7 integrally attached to the support body. The armature 5 is notched at the intermediate portion on the side of the support body 6 to which the movable contact spring 7 is attached, so that the height of the amateur block 4 is suppressed to a low level. One side of the support 6 has a rotating shaft 6a.
Is formed, and a notch 6b is provided on the opposite side. The movable contact spring 7 has a bifurcated tip extending further than both ends of the amateur, and a movable contact 7a is provided at that portion.
7a is attached. A support spring portion 7b is provided in the middle of the movable contact spring 7 so as to extend from the notch 6b of the support body 6 in the direction of the rotation axis.

The base 8 is made of a molding material such as a substantially box-shaped synthetic resin, and the contact terminals 9 and the coil terminals 10 which are integrally embedded from both sides protrude from the lower surface of the base 8. An insulating wall 8a that insulates and isolates the coil chamber 8c and the contact chamber 8d from the middle of the bottom of the base 8 is provided. A bearing recess 8b that pivotally supports the rotating shaft 6a of the amateur block is provided on the upper portion of the insulating wall 8a.

The case 11 has a substantially box shape and is fitted on the base 8.

When assembling and manufacturing each of the above parts, first, the coil block 1 is housed in the coil chamber 8c of the base 8, and then the permanent magnet 3 is provided in the contact chamber 8d.
It is placed at a and 2a. At this time, the contact chamber 8d and the coil chamber 8c are insulated and isolated by the insulating wall 8b and the extension portions 1b of the coil collar portion 1a arranged on both sides of the insulating wall 8b, and at least in the coil chamber 8c. Since the iron core 2 extended to the portion is not exposed, the coil chamber is inserted through the iron core 2.
A sufficient insulation distance can be secured without reducing the substantial insulation distance between the coil 1c of 8c and the contact portion of the contact chamber 8d.

Although the insulating wall 8a is partially formed by the extending portion 1b of the coil frame 1a, if only the insulating wall 8a is provided with a hole through which the protruding magnetic pole portions 2a, 2a of the iron core 2 can be inserted. You may form with.

Next, the armature block 4 is disposed in the contact point chamber 8d from above to support the rotary shaft 6a of the support 6 in the recess 8b of the bearing provided in the base 8 and the support spring portion 7b of the movable contact spring 7 The base 8 is electrically attached to a connection portion integrally provided with the common terminal 9 by welding or soldering.

After arranging the above-mentioned components in the base 8, the case 11 is fitted on the base 8.

[Effect of device]

As described above, the present invention provides an insulating wall between a coil chamber having a base coil and a magnetic pole portion, and an insulating wall between the contact chamber having other metal parts to increase the insulation distance between the coil and the contact portion. Moreover, since the iron core is prevented from being exposed from the coil frame in the coil chamber, the insulation distance between the magnetic path metal component and the coil in the coil chamber does not become small unlike the conventional case. The substantial insulation distance between the contact parts does not become small, high insulation between the coil and the contact is obtained, and even if the relay is miniaturized by high-density mounting of parts, a highly insulating relay can be obtained. .

As an effect of the second term, by forming a part of the insulating wall by the flange portion of the coil frame from which the magnetic pole portion of the iron core projects,
The insulation between the iron core and the coil in the coil chamber can be further enhanced, and a smaller and highly insulating relay can be obtained.

[Brief description of drawings]

1 to 2 (a), (b), (c) and (d) respectively show an embodiment of the present invention, wherein FIG. 1 is an exploded perspective view and FIG. 2 (a), respectively. Is a plan sectional view, FIG.
Is a lateral side cross-sectional view, FIG. 6C is a lateral side view, and FIG. FIG. 3 is a perspective view showing another embodiment of the permanent magnet. 4 (a), 4 (b), and 4 (c) show a conventional example, FIG. 4 (a) is a plan view, and FIG. 4 (b) is a longitudinal side sectional view. FIG. 7C is a lateral side sectional view. 1 ... Coil block, 1b ... Collar part, 1c ... Extension part,
2 ... Iron core, 2a ... Magnetic pole part, 5 ... Amateur, 7 ...
Movable contact spring, 8 ... Base, 8a ... Insulating wall, 8c ... Coil chamber, 8d ... Contact chamber.

Claims (2)

[Scope of utility model registration request] 1. An iron core, which is inserted into a coil frame around which a coil is wound, has magnetic poles at both ends, an armature that constitutes a magnetic path with the magnetic poles, and is driven by the excitation of the coil, and is opened and closed by the armature. A contact point portion, a coil chamber having the coil, and a base provided with an insulating wall between the contact point chamber having the other magnetic parts while including the magnetic pole portion, and the iron core is formed from the coil frame in the coil chamber. A relay characterized by not being exposed. 2. The relay according to claim 1, wherein a part of the insulating wall is formed by a flange portion of a coil frame from which a magnetic pole portion of an iron core projects.