JPH012234A - Structure of relay contact spring - 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 1. Technical Field 1 The present invention relates to the structure of a contact spring of a relay.

1 Back weight technology 1 Fig. 7 shows a configuration diagram of a conventional general relay, in which an iron core 8 is inserted and placed inside a coil bobbin 6 around which a coil 7 is wound, and one end of the iron core 6 is attached to a suction surface) ( a, and the other end is fixed to the vertical piece 1]a of the yoke 9.A substantially doglegged armature 10 is pivoted to the tip of the horizontal piece 9b of the yoke 9, and one end of the armature 10 is fixed to the iron core 8. When the coil 7 is excited, the attraction surface 8a of the card 5 will be attracted to the attraction surface 8a of the card 5.
is pressed and driven. The base of the contact spring 3' is connected to the common terminal plate 1.
1, and a fixed terminal plate 1 is attached to the tip of the contact spring 3'.
A movable contact 2 facing a fixed contact 1 is fixed to a fixed contact 2. When the card 5 is pressed and driven, the card 5
The contact spring (') is pressed and driven to close the movable contact 2 and the fixed contact 1.

Then, when the excitation of the filter 7 is cut off, the armature 10 returns to its original position, and the contact spring 3' also returns to its original position, so that the contacts 1 and 2 are separated by [11].

In such a conventional example, the contact spring 3' is simply connected to the card 5.
Since the contacts 1 and 2 are only driven or returned in the direction of the arrow, the contacts 1 and 2 cannot perform a large wiping action, resulting in a problem that the welding resistance of the contacts 1 and 2 is poor.

[Object of the Invention] The present invention has been provided in view of the above-mentioned points, and provides a contact spring structure for a relay that aims to improve welding resistance by increasing wiping and rolling. It is something to do.

[Disclosure 1 of the Invention (vI construction) The present invention comprises a contact spring having a fixed base and a movable contact facing the fixed contact at the tip, and an electromagnetic device that drives the contact spring to push the movable contact. In a relay having a fixed contact and a card for closing, a support is provided with one end supported and the other end pivotally connected to a contact spring, and a longitudinal end of the contact spring is provided between the base of the contact spring and the push contact of the card. Movement that allows for directional movement! By providing the 1ffll+ means, when the card presses the contact spring, by pushing the movement adjustment means side with the other end of the support whose one end is supported, the contact spring itself moves and wipes the contact, Further, when the contact spring returns to its original position, the contact spring moves in the opposite direction to the above-mentioned direction to perform rolling.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

Incidentally, the electromagnet device consisting of an armature and the like for pushing and driving the card 4 is the same as the conventional one, and the gist of the present invention is that the curved portion 13 provided on the base side of the contact spring 3 is pivotally coupled to the contact spring 3. The other structure is the same as the conventional one, so the explanation will be omitted. That is, as shown in FIG. tjS1, a curved portion 13 shaped like a letter 1 is formed at the base of the contact spring 3 fixed to the common terminal plate 11. One end of the support body 5 is supported in the recess 15 of the body 14, and the other end is pivotally connected to the contact spring 3. In other words, the third
As shown in the figure, a notch 3a is formed on both sides between the curved part 13 of the contact spring 3 and the push contact point of the card 4, and a protrusion 5a that loosely fits into the notch 3a is attached to the other end of the support 5. It is integrally formed on both sides.

When the card 4 is pressed and driven in the same manner as in the conventional case, from the state shown in FIG.
As shown in FIG. JtJ2 (b), the card 4 presses the contact spring 3 to close both contacts 1 and 2.

Furthermore, when the card 4 presses the contact spring 3, the contact spring 3
Because it is loosely fitted to the support body 5 which is supported at one end,
The support body 5 rotates with one end as a fulcrum in the direction of the arrow shown in FIG. 2(e), and the curved portion 13 is caught in the movement of the support body 5, thereby moving the contact spring 3 toward the base side. Therefore, this operation causes the movable contact 2 to perform a wiping operation in which it slides on the surface of the fixed contact 1. In addition, when the card 4 returns, the operation opposite to the above is performed. In other words, when the card 4 returns due to the return force of the return spring or the contact spring 3 itself, the contact spring 3 is moved toward the tip side by the return of the curved portion 13. By moving the movable contact 2, a rolling action is performed in which the movable contact 2 slides on the surface of the fixed contact 1. Therefore, the contact spring 3 can be moved to the width of the lower part of the curved part 13 by rotating the support body 5 according to the amount of pressing of the card 4, so that a large amount of wiping can be achieved and the welding resistance is improved. It is possible to obtain a strong contact spring 3 configuration. Incidentally, the curved portion 13 constitutes a movement adjustment means.

FIG. 4 shows another embodiment of the electromagnetic device, in which four of the iron cores 23
Grooves 24 are formed on each side surface over the entire length in the longitudinal direction, and a link g28 that fits into the grooves 24 is integrally formed between the flanges 22 of the coil bobbin 21 made of an insulating material. That is, the iron core 23 provided with the fly 24 is coated, four connecting parts 28 are formed in the opening of the flange part 22 corresponding to the grooves 24 of the iron core 23, and all the molded parts between the flange parts 22 are not formed. The suction power is improved by using a molded part as a part. A yoke 25 is arranged below the fill bobbin 21 to which the iron core 23 is attached.
An opening 26 into which one end of the iron core 23 is inserted is formed in the vertical piece 5. Further, the armature 27 is attracted to the other end surface of the iron core 26 .

FIG. 5 shows a cross-sectional view, in which a coil 29 is wound around the outer periphery of the iron core 23 and the connecting portion 28. The smaller the connecting portion 28 of the fill bobbin 21 is, the better; it is also possible to form two connecting portions 28 at the top and bottom as shown in FIG. 6(a), or two connecting portions 28 on both sides as shown in FIG. 6(1)). It's good. With this, the suction force is improved compared to when the joint ffl528 between the flanges 22 of the coil bobbin 21 is made thicker than the molded wall. The coil bobbin 21 has one
As a result, the number of parts is reduced, making it possible to obtain a low-cost electromagnet.

[+2 Light Effect] As described above, the present invention has a contact spring having a fixed base and a fixed contact at the tip (Jh contact), and an electromagnet V.
After being driven by the C position and moving by pressing the contact spring,
In this relay, a support body is provided with one end supported and the other end pivotally connected to a contact spring, and the contact spring is connected between the base of the contact spring and the push contact of the card. Since the card is provided with a movement adjustment means that enables movement in the longitudinal direction, when the card presses against the contact spring, one end of the card is supported by pressing the movement adjustment means side with the other end of the support. The contact spring itself moves and wipes the contact, and when the contact spring returns, it moves in the opposite direction to the above and can perform rolling, so rolling and wiping are large. Can be removed to obtain a contact spring structure with strong welding resistance.
This has the effect of reducing C''.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of an embodiment of the present invention, and FIGS. 2(a) to (c)
) is an explanatory diagram of the same operation as above, FIG. 3 is an enlarged exploded perspective view of the main parts of the above, FIG. 14 is an exploded perspective view of another embodiment of the electromagnet device as above, FIG. (a) and (+3) are sectional views showing other examples of the connecting portions, respectively, and FIG. 7 is a configuration diagram of a conventional example. 1 is a fixed contact, 2 is a movable contact, 3 is a contact spring, 4 is a card, and 5 is a support body. Agent Patent Attorney Ishi ll Chief 71■-I-- :ko 〇Figure 7

Claims (1)

[Claims] (1) A contact spring having a fixed base and a movable contact facing the fixed contact at the tip, and a card driven by an electromagnetic device to press and drive the contact spring to close the movable contact to the fixed contact. In the relay, a support body is provided with one end supported and the other end pivotally connected to a contact spring, and a movement adjusting means for enabling longitudinal movement of the contact spring is provided between the base of the contact spring and the push contact point of the card. A structure of a contact spring of a relay, characterized in that it comprises: