JPS5840508Y2 - Relay structure - Google Patents

Description

[Detailed description of the invention] The present invention relates to a relay structure, in which a contact piece 12 is arranged, one end of which is fixed to the base 8 and the tip 31 is in elastic contact with the inner wall surface of the base 8 of the relay. Contact piece 12
A presser spring 7 provided at a predetermined angle so as to face the abutment piece 12 from the tip of the relay contacts 13 biases the armature 2, which drives the relay contact 13 to open and close, in the return direction of the relay contact 13. This relates to a relay structure that holds.

Conventionally, as shown in FIG.
In the case where the common terminal 17 is formed by the presser spring portion 14 having a The presser spring 7 of the presser spring portion 14 presses the armature 2, which drives the relay contact 13 to open and close, toward the yoke 1, thereby forming a fulcrum for rotation of the armature 2. At the same time, the armature 2 was urged in the return direction.

In such a case, when the presser spring part 14 shifts toward the armature 2 due to variations in the bending of the presser spring part 14 or variations in the bending of the presser spring 7, the tip 31 of the presser spring part 14 may come into contact with the armature 2. This has the disadvantage that the armature 2 does not return to its normal position, and the pressure applied by the presser spring 7 to the armature 2 also changes, resulting in unstable operating characteristics.

The present invention has been proposed in view of the above-mentioned points, and includes a presser spring that allows the tip of the contact piece provided from the tip to come into elastic contact with the inner wall surface of the base of the relay, thereby positioning the base. The purpose is to easily and reliably position the presser spring and stabilize the operation of the relay contact by urging the armature that drives the relay contact to open and close with a spring in the direction of return of the relay contact and holding the armature. That is.

The present invention will be described in detail below based on illustrated embodiments.

In the figure, reference numeral 8 denotes a base that is a synthetic resin molded surface, and walls 21 are erected around the top surface, and a cover 9 that is also a synthetic resin molded surface and whose lower surface is open is placed over this wall 21 to cover the outer surface of the wall 21. The protrusion 22 provided and the engagement hole 2 provided at the bottom of the cover 9
3, both can be assembled by engaging them.

A pair of parallel insulating walls 26 and 27 are erected on the upper surface of the base 8, a yoke 1 is placed between the two line edge walls 26 and 27, a coil block is placed on one side of the insulating wall 26, and a coil block is placed on one side of the insulating wall 26. A contact block is arranged on one side of 27.

The coil block is composed of a coil frame 5 around which a coil 4 is wound around the outer periphery of a central body 28, and an iron core 3 disposed in a through hole 30 of a core of the coil frame 5. Coil terminals are provided at both ends of the coil frame 5. Terminal holding part 29.2 into which 20 is inserted
9 are integrally molded.

The iron core 3 is integrated with the L-shaped yoke 1, and the iron core 3 and the yoke 1 are formed into a U-shape.

Both have rectangular cross-sectional shapes and the same size.

The end face of the iron core 3 and the end face of the yoke 1 are also cut at right angles so that both end faces become the same plane.

Therefore, the iron core 3 and the yoke 1 are compatible, and the coil frame 5
At the time of installation, one of the pieces may be used as the iron core 3 and the other piece may be used as the yoke 1.

2 in the figure is an armature, which forms an abbreviated shape with a piece 2a that is attracted to the magnetic pole surface of the end face of the iron core 3 and a piece 2b that presses and drives a contact spring 6, which will be described later. A concave surface 11 is formed at the center of the outer surface, and a piece 2a of the inner surface of the bent portion is formed.
A recess 10 is formed in the closer portion.

The armature 2 has one edge of the recess 10 supported by the edge of the yoke 1 so that it can swing freely, and a presser spring that contacts the concave surface 11 and urges the armature 2 toward the yoke 1. It is held by 7.

The presser spring 7 is formed integrally with the other end of the contact spring 6, which has a pair of movable contacts 15, 16 at one end, and is attached to the common terminal 17.

The point of contact between the presser spring 7 and the armature 2 in the concave surface 11 is closer to the piece 2b that drives the contact spring 6 than the point where the armature 2 is supported by the yoke 1, and therefore the presser spring 7 simply contacts the armature 2. It not only holds the armature 2 by urging it toward the yoke 1, but also functions as a return spring for the armature 2.

A common terminal 17, to which a contact spring 6 and a presser spring 7 are attached, and a fixed contact 16, 16, respectively, is attached.

Both the normally closed terminal 18 and the normally open terminal 19 are attached to the base 8 by inserting their terminal pin portions into insertion holes 24 provided in the base 8.

The coil frame 5 is also attached to the base 8 by inserting the coil terminals 20 into the insertion holes 25 provided at the corners of the base 8.

Reference numeral 12 denotes a contact piece, which is formed into a cross-sectional shape with a contact spring 6 having a movable contact 15, and further has a common terminal 17 formed integrally with the terminal portion 32.

This abutting piece 12 is cut out along the periphery leaving the tip of the abutting piece 12, and the piece is bent inward at a predetermined angle to form the presser spring 7.

Thus, when inserting and fixing the common terminal 17 into the insertion hole 24 of the base 8, the contact piece 12 is bent greatly outward as shown in FIG. The tip 31 of the contact piece 12 fixed to the base 8 is made to surely come into elastic contact with the inner wall surface of the base 8.

By bending this abutment piece 12 largely, the tip 31 of the abutment piece 12 will surely come into elastic contact with the inner wall surface of the base 8, and thereby the presser spring 7, whose base has been positioned, will be connected to the relay contact 13 of the yoke 1. The armature 2, which is driven to open and close, is pressed to hold the armature 2, and the armature 2 is urged with a predetermined pressure in the direction in which the relay contact 13 returns.

As mentioned above, the present invention arranges a contact piece whose one end is fixed to the base and whose tip is in elastic contact with the inner wall surface of the base of the relay. The structure is such that a presser spring installed at a predetermined angle biases the armature that drives the relay contact to open and close in the direction of return of the relay contact and holds the armature. This has the advantage that even if there is some variation, the positioning of the presser spring can be facilitated and the operation of the relay can be ensured.

[Brief explanation of drawings]

Figure 1 is a plan view of a conventional relay, Figure 2 is an exploded perspective view of an embodiment of the present invention, Figure 3 is a perspective view of the same relay, Figure 4 is a perspective view of the same relay, and Figure 5. is an explanatory diagram of the action of the abutment piece and presser spring same as above, 2 is an armature, 7 is a presser spring, 8 is a base, 12 is an abutment piece, 13 is a relay contact,
31 is the tip.

Claims (1)

[Scope of utility model registration request] A contact piece whose one end is fixed to the base and whose tip is in elastic contact with the inner wall surface of the base of the relay is arranged, and a presser spring is provided at a predetermined angle from the tip of the contact piece to face the contact piece. is a relay structure in which the armature that drives the relay contact to open and close is biased in the direction of return of the relay contact to hold the armature.