JPH1116474A - Electromagnetic relay - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electromagnetic relay wherein a card can be mounted on a body easily if positional displacement happens between the card and a cutout groove. SOLUTION: This electromagnetic relay is equipped with a body 1, which has a projecting wall 12 projecting from a bottom part 11 and in which a cutout groove 14 having both side parts 13 is provided in the projecting wall 12, an electromagnet part 2 in which an armature 24 supported, so as to be able to make turning motion, on a yoke 23 joined to one end part of an iron core 21 is attracted to and released from the other end part of the iron core 21, a contact part 3 in which a movable contact 31a is firmly attached to a movable contact spring 31, and a card 4, which has the other piece 42 making a right angle with one piece 41 and in which the one piece 41 is slidably held in the cutout groove 14 of the body 1 and drives the contact part 3 so as to open/close it, and the electromagnet part 2 and the contact part 3 are disposed respectively on both sides of the projecting wall 12. In this event, the body 1 is constructed such that guide tapers 13c for guiding the card 4 are provided on both side parts 13 of the projecting wall 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic relay for transmitting a driving force of an armature to a movable contact spring via a card to drive a contact portion to open and close.

[0002]

2. Description of the Related Art Conventionally, as this type of electromagnetic relay, FIG.
And the configuration shown in FIG. In this device, a coil was wound around a body A having a bottom and a protruding wall A1 protruding from the bottom, and a notch groove A3 notched along the bottom and having both sides A2 provided on the protruding wall A1. An electromagnet section in which an armature rotatably supported by a yoke coupled to one end of the iron core is attracted to and released from the other end of the iron core, and a movable contact which comes into contact with and separates from a fixed contact is a movable contact spring. A piece B1 and another piece B2 orthogonal to the piece B1. The piece B1 is inserted into the cutout groove A3 of the body A and held slidably to open and close the contact portion. And a card B.

More specifically, the electromagnet portion is disposed on one side with respect to the protruding wall A1 of the body A, and the contact portion is disposed on the other side, that is, the electromagnet portion and the contact portion are disposed on both sides of the protruding wall A1. Further, both side portions A2 are constituted by one side portion A21 and the other side portion A22, and concave grooves A4 having a wider groove width than the notch groove A3 are provided on both side portions A2 of the notch groove A3. .

The card B is composed of a piece B1 and the piece B
One piece B is formed in a substantially cross shape with another piece B2 orthogonal to 1
1 is inserted and held in the notch groove A3 from the side, and the other piece B2 is housed inside the concave groove A4. Here, the notch groove A3 has a groove width δ1 accurately formed corresponding to the plate thickness of the piece B1 so that the card B slides stably and slidably. However, in this case, a guide taper for guiding the card B is not provided on both side portions A2.

[0005]

In the above-described conventional electromagnetic relay, the driving force of the armature is transmitted to the movable contact spring via the card B to open and close the contact portion, and the current applied to the contact portion is changed. Can be opened and closed.

[0006] However, the piece B1 is cut into the notch A3.
When mounting card B on body A by inserting
1 and the notch groove A3, a position shift may occur, and damage or the like of the both sides A2 due to an insertion error may occur.

Further, as shown in FIG. 6, the other piece B2 of the card B is accommodated in the concave groove A4.
The thickness δ2 of the other side portion A22 located on the side opposite to the bottom portion of the body A with respect to 3 becomes thinner. Therefore, when the cover C fitted to the body A is deformed, the other side portion A22 is brought into contact with the cover C and receives the deformation stress, so that the groove width δ1 of the notch groove A3 changes, and the card B slides stably. In some cases, it did not slide freely.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has as its object to provide an electromagnetically operable electromagnetic head capable of easily mounting a card on a body even if a positional shift occurs between the card and a notch groove. To provide a relay.

[0009]

According to a first aspect of the present invention, there is provided a notch having a projecting wall protruding from a bottom and having a notch along the bottom and having both sides. An electromagnet in which an armature rotatably supported by a body provided on a protruding wall and a yoke coupled to one end of an iron core wound with a coil is rotatably attracted to and released from the other end of the iron core. Part, a contact part in which a movable contact that comes into contact with and separates from a fixed contact is fixed to a movable contact spring, and one piece and another piece that is orthogonal to the one piece. One piece is inserted into a cutout groove in the body and is slidable. A card that is held at a position and drives the contact portion to open and close, wherein the electromagnet portion and the contact portion are disposed on both sides of the projecting wall of the body, wherein the body has a guide taper that guides the card. In the configuration provided on both sides of the protruding wall, .

According to a second aspect, in the first aspect, the card has a structure in which the other piece is disposed on the electromagnet portion side or the contact portion side with respect to the projecting wall. is there.

According to a third aspect of the present invention, in the first or second aspect, the body is provided with a groove having a groove width wider than that of the notch groove on both sides of the notch groove. The configuration is provided.

According to a fourth aspect of the present invention, in any one of the first to third aspects, the cover fitted to the body is located on the bottom side of the body in the notch groove. An abutment rib abutting on the side portion is provided at a position corresponding to the protruding wall.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

Reference numeral 1 denotes a body, which is provided with a bottom 11 formed of an insulating resin into a substantially rectangular parallelepiped shape, and a projecting wall 12 integrally formed with the bottom 11 and projecting from the bottom 11. A notch groove 14 having both sides 13 and opening to one side is cut out from the side along the bottom 11 and provided on the protruding wall 12. The two side parts 13 have one side part 13a and the other side part 13b facing each other.
3 a is located on the bottom 11 side of the body 1 with respect to the notch groove 14, and the other side 13 b is located on the opposite side of the bottom 11.

Further, as shown in FIG. 3, the chamfered guide taper 13c opens to the opening side of both side portions 13, and the concave groove 13d, which is wider than the cutout groove 14, similarly opens to the opening side. And provided on both sides 13 of the notch groove 14. Further, an engagement groove 13e is formed in the other side portion 13b.

Reference numeral 2 denotes an electromagnet section, which includes an iron core 21 and a coil 22.
, A yoke 23 and an armature 24, and are disposed on one side with respect to the protruding wall 12 of the body 1. The iron core 21 is formed in a rod shape from a magnetic material, and has one end 21a.
And the other end 21b. The other end 21b is formed in a flange shape, and is inserted into the shaft hole 22a of the coil frame.

The coil 22 is a copper wire covered with an insulator, wound around the shaft hole 22a of the coil frame, that is, around the iron core 21, and its terminal is connected to the coil terminal 22b. . The yoke 23 is made of a magnetic material.
And the other piece 23b is formed in a substantially L-shape, and the one piece 23a is caulked to one end 21a of the iron core 21,
The other piece 23b is juxtaposed along the axial hole 22a of the coil frame.

The armature 24 is made of a magnetic material.
a and the other piece 24b are bent at an obtuse angle into a substantially L-shaped long plate shape, and are pressed by the hinge spring 24c to rotate to the end of the other piece 23b of the yoke 23. Freely supported, the piece 24a is sucked and released by the other end 21b of the iron core 21.

Reference numeral 3 denotes a contact portion, which is provided with a movable contact spring 31 and a fixed terminal plate 32.
2 on the other side. The movable contact spring 31
A movable contact 31a made of a silver alloy is fixed to one end of a long plate made of an elastic copper alloy, and the other end is a common terminal 31b.

The fixed terminal plate 32 is formed in a long plate shape using a conductive material such as copper or a copper alloy, and has a fixed contact 32a made of a silver alloy at one end fixed to face the movable contact 31a. The end is a normally open fixed terminal 32b, so-called NO
Terminal. Then, the movable contact 31a comes into contact with and separates from the fixed contact 32a.

Reference numeral 4 denotes a card, which is formed in a plate shape from an insulating resin and has one piece 41 and another piece 4 orthogonal to the one piece 41.
And a contact piece 42a is protruded from the other piece 42, one piece 41 is inserted into the cutout groove 14 of the body 1 and held slidably, and the other piece 42 is It is arranged so as to be located on the contact portion 3 side with respect to the protruding wall 12. Then, the one piece 41 contacts the armature and the contact piece 42a contacts the movable contact spring 31 to drive the contact portion 3 to open and close.

Reference numeral 5 denotes a cover, which is formed in a box shape with a bottom by using an insulating resin.
Is provided at a position corresponding to
The contact rib 51 is engaged with the engagement groove 13 e of the body 1, and one end thereof is in contact with the one side portion 13 a of the body 1.

Here, as shown in FIG. 3, one piece 41 of the card 4 is inserted into the cutout groove 14 of the protruding wall 12 and mounted on the body 1. At this time, even if the position between the piece 41 and the notch groove 14 is shifted from each other, the card 4 is inserted and guided along the guide taper 13c, and
3 can be reliably inserted into the cutout groove 14 without causing damage or the like.

As shown in FIGS. 3 and 4, the card 4 is arranged on the side of the contact portion 3 with respect to the protruding wall 12 of the body 1 without the other piece 42 being accommodated in the groove 13d. Therefore, the other side portion 13b is formed to have a large thickness δ2. Further, since the cover 5 is provided with the contact rib 51, when the cover 5 is deformed while being fitted to the body 1, one end of the contact rib 51 comes into contact with the one side portion 13 a of the body 1 and is deformed. No stress is applied to the other side portion 13b.

The operation of this will be described. When a DC voltage is applied to the coil terminal 22b, the coil 22 wound around the iron core 21 is excited, and the yoke 21 is formed by caulking one end 23a of the iron core 21 to one end 21a of the iron core 21. 23
And an armature 24 rotatably supported at the end of the other piece 23b of the yoke 23 to form a magnetic path. As a result, one piece 24a of the armature 24 is attracted to the other end 21b of the iron core 21 to generate a driving force, and the driving force is transmitted to the movable contact spring 31 via the card 4 to open and close the contact portion 33. Drive.
Then, the movable contact 31a contacts the fixed contact 32a, and the common terminal 31e and the normally-open fixed terminal 33b are closed.

Next, when the DC voltage is removed from the coil terminal 22b, one piece 24a of the armature 24 is released from the other end 21b of the iron core 21, and the movable contact 31a is separated from the fixed contact 32a, and the common contact 31a is opened. The terminal 31e and the normally-open fixed terminal 33b are opened.

In the electromagnetic relay of this embodiment, as described above, the guide taper 13c for guiding the card 4 is provided on both side portions 13 of the protruding wall 12 formed by the cutout grooves 14. Piece 4 of card 4
When the card 1 is inserted along the cutout groove 14 and mounted on the body 1, the card 4 is guided along the guide taper 13 c even if a displacement occurs between the piece 41 and the cutout groove 14. It can be easily mounted, and can be securely inserted, so that it is possible to prevent the side portions 13 from being damaged due to an insertion error.

Further, since the other piece 42 of the card 4 is arranged so as to be located on the contact portion 3 side with respect to the protruding wall 12, the other piece located on the opposite side of the bottom portion 11 of the body 1 with respect to the cutout groove 14. By increasing the thickness of the side portion 13b, the other side portion 13b
Therefore, the card can be slid in a state where the width of the cutout groove 14 is accurately maintained, and the contact portion 3 can be driven to open and close stably.

Further, since the concave groove 13d having a wider groove width than the notch groove 14 is provided at both sides of the notch groove 14, the one piece 41 of the card 4 has both ends of the both sides 13, ie, both ends. The card 4 can be slidably held at two points, so that the card 4 can slide stably.

Further, since the cover 5 fitted to the body 1 is provided and the contact rib 51 is provided on the cover 5, even if the cover 5 is deformed, the contact rib 51 is provided.
Abuts against the notch groove 14 on one side 13 a located on the bottom 11 side of the body 1, and the deformation stress is reduced.
3a, that is, the other side 13
Since the load is not applied to the contact b, the groove width of the notch groove 14 can be accurately maintained, and the contact portion 3 can be driven to open and close stably.

In the present embodiment, the other piece 4 of the card 4
2 is disposed so as to be located on the contact portion 3 side with respect to the protruding wall 12, but may be disposed so as to be located on the electromagnet portion 2 side.
Not limited.

In the present embodiment, the contact ribs 51 that contact the one side 13a are provided on the cover 5 at the positions corresponding to the protruding walls 12.
When there is no contact, the contact rib 51 need not be provided, and there is no limitation.

[0033]

According to the first aspect of the present invention, since the guide taper for guiding the card is provided on both sides of the projecting wall formed by the notch groove, one piece of the card is inserted along the notch groove. When mounted on the body, even if a misalignment occurs between one piece and the notch groove, the card is guided along the guide taper and can be easily mounted. Can be prevented from being damaged at both sides.

According to the second aspect, in addition to the effect of the first aspect, the other piece of the card is arranged so as to be located on the electromagnet portion side or the contact portion side with respect to the protruding wall, so that the notch is notched. The thickness of the other side located on the side opposite to the bottom of the body 1 with respect to the groove is increased to prevent deformation of the other side, so that the card can be held in a state where the groove width of the cutout groove is accurately maintained. By sliding, the contact portion can be stably opened and closed.

According to the third aspect, in addition to the effect of the first or second aspect, the concave groove having a wider groove width than the notch groove is provided on both sides of the notch groove. One piece of the card is slidably held at both ends of the both sides, that is, at two points, so that the card can be stably slid.

According to a fourth aspect, in addition to the effects of any one of the first to third aspects, a cover fitted to the body is provided, and the cover is provided with a contact rib. Therefore, even if the cover is deformed,
Since the contact rib abuts on one side located on the bottom side of the body with respect to the notch groove, the deformation stress is not applied to one side, that is, the entire body, and is applied to the other side. The contact portion can be driven to open and close stably while maintaining the width of the notch groove accurately.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a perspective view of a protruding wall and a card of the same body.

FIG. 4 is a perspective view showing a state in which the card is held in a cutout groove of a body.

FIG. 5 is a perspective view of a protruding wall of a body and a card showing a conventional example.

FIG. 6 is a perspective view showing a state where the card is held in a cutout groove of a body. .

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 11 Bottom part 12 Projection wall 13 Both sides 13a One side 13c Guide taper 13d Concave groove 14 Notch groove 2 Electromagnet part 21 Iron core 21a One end 21b Other end 22 Coil 23 Yoke 24 Armature 3 Contact part 31 Movable Contact spring 31a Movable contact 32a Fixed contact 4 Card 41 One piece 42 Other piece 5 Cover 51 Contact rib

Claims (4)

[Claims] 1. A body having a protruding wall protruding from a bottom portion, a notch groove notched along the bottom portion and having both side portions provided on the protruding wall, and one end of an iron core around which a coil is wound. An electromagnet portion in which an armature rotatably supported by the coupled yoke is attracted and released to the other end of the iron core, and a contact portion in which a movable contact that comes into contact with and separates from a fixed contact is fixed to a movable contact spring. A card having one piece and another piece orthogonal to the one piece, one piece being inserted into a cutout groove of the body and held slidably to open and close the contact part, and the electromagnet part and the contact part are provided. An electromagnetic relay provided on both sides of a projecting wall of the body, wherein the body has guide tapers provided on both sides of the projecting wall to guide the card. 2. The electromagnetic relay according to claim 1, wherein the card has the other piece disposed on the electromagnet portion side or the contact portion side with respect to the protruding wall. 3. The electromagnetic device according to claim 1, wherein the body has a groove having a groove width wider than that of the notch groove provided on both sides of the notch groove. relay. 4. A cover fitted to the body, wherein a contact rib is provided at a position corresponding to the protruding wall, the contact rib being in contact with one side of the notch groove located on the bottom side of the body. The electromagnetic relay according to any one of claims 1 to 3, wherein: