JPH04126656U - electromagnetic relay - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to provide an electromagnetic relay that allows smooth movement of cards. [Configuration] Coil block 20 placed on base 1
The movable iron piece 35, which rotates based on excitation and demagnetization, and the movable contact piece 52 are connected to each other. The card 40 is formed on the base 1, and the card 40 moves while being guided by the guide parts 7 and 9, and is prevented from moving by the stopper part 10.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention is an electromagnetic relay, especially an electromagnetic relay equipped with a card that drives a movable contact piece. It is related to.

0002

[Conventional technology]

Conventionally, as an electromagnetic relay equipped with a card, for example, There is something described in the publication. This electromagnetic relay is based on the excitation and demagnetization of an electromagnet assembly (coil block). Rotate the armature (movable iron piece) above the coil block, and The contact spring (movable) is placed below the coil block through the attached card. The contact point is opened and closed by driving the contact piece). The card is attached to a guide block formed on the yoke (flange) of the coil block. It moves while being guided by the coil block, and the strip also formed on the flange of the coil block moves. The range of movement is restricted by the topper.

0003

[Problem that the idea aims to solve]

However, in the electromagnetic relay, the movement of the card is integrated into the coil block. The guide block and stopper formed on the card control the Therefore, since the movable contact piece that is driven is fixed to the base, the base and the coil If the assembly accuracy of the block is poor, the moving position of the card and the rotating position of the movable contact piece may not match. Otherwise, the card may not slide properly. Therefore, in this invention, we have developed an electromagnetic relay that allows cards to be moved smoothly. The purpose is to provide equipment.

0004

[Means to solve the problem]

In order to achieve the above-mentioned purpose, the present invention has developed a coil block consisting of a coil wound around an iron core. The movable iron piece is rotated based on the excitation and demagnetization of the coil block. By moving the movable iron piece located on the opposite side of the coil block to the movable iron piece. In an electromagnetic relay in which a contact piece is driven via a card attached to the movable iron piece , a guide section that guides the card, and a stock that restricts the movement range of the card. A pad portion is formed on the base.

[0005]

[Effect]

According to the present invention, if the coil block is excited and the movable iron piece is rotated, the The board moves while being guided by the guide section provided on the base and makes movable contact. Drive pieces. On the other hand, if the coil block is demagnetized and the movable iron piece is restored, The card moves until it is prevented from moving by a stopper provided on the base. I will do it.

[0006]

【Example】

Next, one embodiment of the electromagnetic relay according to the present invention will be explained with reference to the attached drawings. Ru. As shown in FIG. 1, this electromagnetic relay roughly consists of a base 1, a coil block 20, , a movable iron piece 35, a card 40, a contact opening/closing mechanism 50, and a case 55. ing.

[0007] The base 1 includes a first accommodating part 2 that opens upwardly and laterally, and this first accommodating part 2. 2, and a second accommodating part 15 that is located on the lower side of 2 and opens on the opposite side and end surface. It is growing. Notches 5, 5 are provided at the center of the side edges of both end surfaces 3, 4 of the first accommodating portion 2, respectively. I'm being kicked. In addition, by providing a stepped portion 6 on one end surface 3, a recess is formed on the side edge side. A first guide part 7 having a step 8 is formed, and a first guide part 7 is formed from the step part 6. Second guide portions 9 are provided protruding from the portion 7 at predetermined intervals. Then, both guide portions 7 , 9 is provided with a stock to prevent vibration when the movable contact piece 52 returns as described below. The parts 10 and 10 are shown in FIG. Further, the upper end of the end surface 3 is cut leaving the side edge portion. A recessed portion 11 is formed by the cutout. A protrusion 16 is formed on the opening side of the end face of the second accommodating portion 15, and the side edge on the opening side is cut out to the protrusion 16 to form a locking receiving portion 17. Also, the end surface 4 On the side, there is a press-fit groove for fixing a fixed contact piece 51 and a movable contact piece 52, which will be described below. 18 and 19 are formed, respectively.

[0008] The coil block 20 is connected to an iron core 21 having a substantially U-shaped cross section via a spool 22. Flange portions 23 are formed by winding a coil 31 and are located at both ends of the spool 22. The first and second legs 26 and 28 provided on one side (flange 23) of 24 have coil ends. The children 30, 30 are each insert molded. The first leg portion 26 is A protrusion 27 is formed at the upper end of the collar 23 and protrudes from the flange 23 . On the other hand, The two leg portions 28 protrude from the flange portion 23 and extend downward, and the two leg portions 28 have the lower ends thereof. A locking portion 29 that locks onto the locking receiving portion 17 of the base 1 is provided in a protruding manner. Also, this A groove portion 25 is formed on the side surface of the collar portion 23 located near the two leg portions 28, and the coil 3 The winding start side of No. 1 is arranged.

[0009] The movable iron piece 35 is a plate-shaped body made of a magnetic material, and a protrusion 36 is provided at one end thereof. and a plate spring attached to the collar portion 24 of the coil block 20 on the other end side. 37 is attached.

0010 The card 40 is a plate-shaped body made of synthetic resin, and has a pair of opposing elastic pieces 4 at its upper end. 1 and 41 are provided to hold the protrusion 36 of the movable iron piece 35, and this The center portions on both sides of the card 30 are narrow width portions 42. On the other hand, this card 40 At the lower end, locking claws 43 extend on both sides, and a protrusion 44 is provided at the center. Ru. This card 40 has a narrow width due to both guide portions 7 and 9 of the base 1. portion 42, and upward movement is restricted by the stopper portion 10. The sea urchin is turning.

[0011] The contact opening/closing mechanism 50 consists of a fixed contact piece 51 and a movable contact piece 52. Both of these are attached by pressing the base into the press-fitting grooves 18 and 19 from the side of the base 1. It is now possible to be kicked. A through hole is provided at the free end of the movable contact piece 52. The protrusion 44 of the card 40 is fixed in the through hole 53, and the movable iron piece 35 and the movable contact piece 5 2 are connected.

0012 Next, a method of assembling the electromagnetic relay having the above structure will be explained. First, the fixed contact piece 51 and the movable contact piece 51 are inserted into the second housing part 15 of the base 1 from the side. Insert the contact piece 52 and fix it by press-fitting its base into the press-fitting grooves 18 and 19. , the movable contact 51a and the fixed contact 52a are opposed to each other at a predetermined interval. On the other hand, the coil A movable iron piece 35 is disposed above the lock 20, and its leaf spring 37 is engaged with the end face of the collar 4. Stop and install.

[0013] Then, when the coil block 20 is accommodated in the second accommodating portion 15 of the base 1, The flange 23 of this coil block 20 is located in the recess 11 of the base 1, and is located in the recess 11 of the base 1. The part 26 is located in a recess 8 provided on the side of the first guide part 7, and the second leg part 28 is located in a recess 8 provided on the side of the first guide part 7. 2 A locking portion 29 located on the side of the guide portion 9 and provided at the lower end is a locking portion 29 of the base 1. 17.

[0014] Next, attach the mounting portion 41 of the card 40 to the protrusion 36 of the movable iron piece 35, and then attach the card 40 to the protrusion 36 of the movable iron piece 35. By fixing the protrusions 44 of 0 to the through holes 53 of the movable contact piece 52, respectively. , the movable iron piece 35 and the movable contact piece 52 are connected by a card 40 (see FIG. 4). As a result, the card 40 has the first and second guide portions 7 provided on the base 1, 9, and its narrow part 42 is guided by both guide parts 7 and 9. Become. After that, the electromagnetic relay is completed by covering the base 1 with the case 55. .

[0015] The electromagnetic relay operates as shown in FIG. 2 when the coil block 20 is not energized. The movable iron piece 35 is rotated by the urging force of the plate spring 37 using the upper end of the collar 24 as a fulcrum. It rotates in the clockwise direction, and the card 40 is positioned above and the movable contact piece 52 is straight. The state is maintained, and the movable contact 51a is separated from the fixed contact 52a.

[0016] Then, when the coil block 20 is excited, the free end of the movable iron piece 35 moves to the iron core 2. It is attracted to the magnetic pole surface of 1 and rotates counterclockwise using the upper end of the flange 24 as a fulcrum. Ru. As a result, the card 40 is moved by the first and second guide portions 7 and 9. Move downward while being guided. The movable contact piece 52 is bent, and the movable contact 52 a to the fixed contact 51a.

[0017] Subsequently, when the coil block 20 is demagnetized, the movable iron piece 35 Due to the urging force of 7, the upper end of the flange 4 is used as a fulcrum to rotate clockwise and return to the original position. to return to. As a result, the card 40 is guided by the first and second guide parts 7 and 9. The locking claw 43 moves upward while being guided by the first and second guides. The lower end portions of the portions 7 and 9, that is, abut against the stopper portion 10. As a result, the movable contact The piece 52 returns to its original state without vibration, and the movable contact 52a becomes the fixed contact 51a. Separate from.

[0018] In this way, the movable iron piece 35 rotates based on the excitation and demagnetization of the coil block 20. This moves the card 40, but this card 40 is always placed on base 1. It moves while being guided by the first and second guide parts 7 and 9. On the other hand, the movable The contact piece 52 is fixed to the base 1. In other words, the card 40 is based on The movable contact piece 52 fixed at 1 moves while being precisely regulated in position. Become.

[0019] In this embodiment, the movable iron piece 35 is rotated above the coil block 20. However, the coil block 20 should be rotated below or to the side. In this case, the guide parts 7 and 9 are provided at corresponding positions on the base 1. It will be.

[0020]

[Effect of the idea] As is clear from the above explanation, according to the electromagnetic relay according to the present invention, the base A guide part and a stopper part are provided to connect the movable iron piece and the movable contact piece fixed to the base. Since the movement of the card connecting the movable contact piece and the card is restricted, The relative positional accuracy between is improved.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of an electromagnetic relay.

FIG. 2 is a front view of the electromagnetic relay.

FIG. 3 is a plan view of the electromagnetic relay.

FIG. 4 is a side view of the electromagnetic relay.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1... Base, 7, 9... 1st, 2nd guide part, 10... Stopper part, 20... Coil block, 40... Card, 52...
Movable contact piece.

Claims (1)

[Scope of utility model registration request] Claim 1: A coil block formed by winding a coil around an iron core is placed on a base, and the movable iron piece of the coil block is rotated based on the excitation and demagnetization of the coil block. In an electromagnetic relay in which a movable contact piece located on the opposite side is driven via a card attached to the movable iron piece, a guide part for guiding the card and a stopper part for regulating the movement range of the card are formed on the base. An electromagnetic relay characterized by: