WO2023139912A1

WO2023139912A1 - Electromagnetic contactor

Info

Publication number: WO2023139912A1
Application number: PCT/JP2022/043018
Authority: WO
Inventors: 大史和賀井; 幸悦高谷; 優志関谷
Original assignee: 富士電機機器制御株式会社
Priority date: 2022-01-21
Filing date: 2022-11-21
Publication date: 2023-07-27
Also published as: JP7487853B2; JPWO2023139912A1; CN117616534A; KR20240011824A

Abstract

A contact support (12) is provided toward the front side in a predetermined depth direction, and has a groove (22) formed therein. A movable plunger (14) is provided toward the back side in the depth direction, and is driven by an electromagnetic part (13). A joint spring (16) is a leaf spring, the center of the joint spring is fixed to the movable plunger (14), and the longitudinal-direction tip end side the joint spring is inserted into the groove (22) along the short direction. A protrusion (36) is formed in the groove (22), a gap (42) serving as a recess is formed at the tip end side of the joint spring (16), and when the tip end side of the joint spring (16) is inserted into the groove (22), the gap (42) and the protrusion (36) fit to each other.

Description

magnetic contactor

The present invention relates to an electromagnetic contactor.

In the electromagnetic contactor, a movable plunger is connected to a contact support via a connection spring, as shown in Patent Document 1, for example. The connecting spring is a plate spring having a longitudinal direction and a lateral direction. A movable plunger is fixed at the center in the longitudinal direction, and both ends in the longitudinal direction are connected by being inserted into grooves of the contact support along the lateral direction.

Japanese Patent No. 6075508

Since the connecting spring is simply inserted into the groove of the contact support, there is a possibility that it will be displaced due to vibration or improper assembly, affecting the operation of the magnetic contactor.
SUMMARY OF THE INVENTION An object of the present invention is to suppress displacement of a connecting spring in an electromagnetic contactor.

An electromagnetic contactor according to one aspect of the present invention includes a contact support, a movable plunger, and a connecting spring. The contact support is provided on the front side in the predetermined depth direction, and has a connecting spring groove. The movable plunger is provided on the far side in the depth direction and is driven by the electromagnet section. The connecting spring is a plate spring, the center of which is fixed to the movable plunger, and the longitudinal tip side is inserted in the connecting spring groove along the lateral direction. One of the concave portion and the convex portion is formed in the connecting spring groove, and the other of the concave portion and the convex portion is formed on the tip side of the connecting spring. When the tip side of the connecting spring is inserted into the connecting spring groove, the concave portion and the convex portion are fitted to each other.

According to the present invention, when the tip side of the connecting spring is inserted into the groove for connecting spring, the concave portion and the convex portion are fitted to each other, thereby regulating the insertion position of the connecting spring in the lateral direction. Therefore, positional deviation of the connecting spring can be suppressed.

It is a figure which shows some electromagnetic contactors. FIG. 11 shows a contact support and movable plunger; FIG. 11 shows a contact support; It is a figure which shows a groove part and a groove part. FIG. 11 shows an armature and a connecting spring; It is a figure which shows the connection state of a contact support and a movable plunger. It is a figure which shows a comparative example. It is a figure which shows the groove part of 2nd embodiment, and a groove part. It is a figure which shows the armature and connection spring of 2nd embodiment. It is a figure which shows the connection state of 2nd embodiment. It is a figure which shows the groove part of 3rd embodiment, and a groove part. It is a figure which shows the armature and connection spring of 3rd embodiment. It is a figure which shows the connection state of 3rd embodiment. It is a figure which shows the contact support of 4th embodiment. It is a figure which shows the connection state of 4th embodiment. It is a figure which shows the contact support of 5th embodiment. It is a figure which shows the connection state of 5th embodiment.

Hereinafter, embodiments of the present invention will be described based on the drawings. Note that each drawing is schematic and may differ from the actual one. Moreover, the following embodiments are intended to exemplify devices and methods for embodying the technical idea of the present invention, and are not intended to limit the configurations to those described below. That is, the technical idea of the present invention can be modified in various ways within the technical scope described in the claims.

<<First embodiment>>
"composition"
In the following description, the three mutually orthogonal directions are referred to as the vertical direction, the width direction, and the depth direction for convenience.
FIG. 1 is a diagram showing part of the electromagnetic contactor 11. As shown in FIG.
Here, the magnetic contactor 11 is shown viewed from one side in the vertical direction, the other side in the width direction, and the front side in the depth direction. The electromagnetic contactor 11 includes a contact support 12 and an electromagnet portion 13 . The contact support 12 is provided on the front side in the depth direction, and the electromagnet portion 13 is provided on the back side in the depth direction.

FIG. 2 shows the contact support 12 and the movable plunger 14. As shown in FIG.
Here, the contact support 12 and the movable plunger 14 are shown viewed from one side in the vertical direction, the other side in the width direction, and the front side in the depth direction.
The contact point support 12 is made of resin and formed in a substantially rectangular parallelepiped shape whose vertical dimension is smaller than its width dimension and depth dimension, and supports a movable contact (not shown).
The electromagnet part 13 has a movable plunger 14 that can move forward and backward in the depth direction. The movable plunger 14 is a cylindrical iron core extending in the depth direction, and advances and retreats in the depth direction according to on/off of the electromagnet part 13 . The movable plunger 14 is fixed to an armature 15 and a connecting spring 16 at its front end in the depth direction.

The armature 15 is a plate-shaped magnetic body having a uniform thickness and extending in the width direction and the longitudinal direction. The connecting spring 16 is a metal plate spring having a substantially uniform thickness and extending in the width direction and the vertical direction, with the width direction being the longitudinal direction and the vertical direction being the short direction. A connection spring 16 is superimposed on the front side of the armature 15 in the depth direction and fixed to the movable plunger 14 together. The movable plunger 14 is connected to the contact support 12 by inserting the armature 15 and the connection spring 16 into the depth direction of the contact support 12 along the vertical direction.

FIG. 3 is a diagram showing the contact support 12. As shown in FIG.
(a) in the figure shows the contact support 12 viewed from one side in the vertical direction, the other side in the width direction, and the front side in the depth direction. (b) in the figure shows the contact support 12 viewed from one side in the vertical direction. The contact support 12 has a pair of grooves 21 (armature grooves) into which the armature 15 is inserted and a pair of grooves 22 (connection spring grooves) into which the connection spring 16 is inserted. The pair of grooves 21 into which the armature 15 is inserted is wider in the width direction than the pair of grooves 22 into which the connecting spring 16 is inserted, and is provided on the far side in the depth direction.

FIG. 4 is a

diagram showing grooves

21 and 22. As shown in FIG.
(a) in the drawing shows a state in which the

grooves

21 and 22 on one side in the width direction are viewed from one side in the vertical direction, the other side in the width direction, and the front side in the depth direction. (b) in the drawing is a state in which a cross section along the width direction and the longitudinal direction passing through the groove portion 22 on one side in the width direction is viewed from the front side in the depth direction.
A groove part 21 into which the armature 15 is inserted has a side face 25 facing inward in the width direction, a bottom face 26 facing the front side in the depth direction, a ceiling face 27 facing the back side in the depth direction, and a terminal face 28 facing one side in the vertical direction. Therefore, the groove 21 is open on one side in the vertical direction and on the inner side in the width direction. The distance from the bottom surface 26 to the ceiling surface 27 is greater than the thickness of the armature 15. - 特許庁Of the area sandwiched between the bottom surface 26 and the ceiling surface 27 , the length from one end in the vertical direction to the end surface 28 serves as an insertion margin for the armature 15 .

The groove part 22 into which the connecting spring 16 is inserted has a side face 31 facing inward in the width direction, a bottom face 32 facing the front side in the depth direction, a ceiling face 33 facing the back side in the depth direction, and a terminal face 34 facing one side in the vertical direction. Therefore, the groove 22 is open on one side in the vertical direction and on the inner side in the width direction. The distance from the bottom surface 32 to the ceiling surface 33 is greater than the height of the connecting spring 16 in the depth direction. In the area sandwiched between the bottom surface 32 and the ceiling surface 33 , the range from one end in the vertical direction to the end surface 34 serves as an insertion margin for the connecting spring 16 . A guide surface 35 is formed on the inlet side of the groove portion 22 and is inclined toward the front side in the depth direction toward the other side in the vertical direction. On the bottom surface 32, a convex portion 36 is formed on the outer side in the width direction so as to protrude toward the front side in the depth direction. The projection 36 has a trapezoidal shape in which the upper base on the front side is shorter than the lower base on the far side in the depth direction when viewed from the inside in the width direction, and more specifically, is an isosceles trapezoid in which the inner angles of both ends of the lower base are equal to each other. The height of the convex portion 36 is about the thickness of the connecting spring 16 .

FIG. 5 shows the armature 15 and the connecting spring 16. FIG.
(a) in the drawing shows a state in which the armature 15 and the connecting spring 16 are viewed from the front side in the depth direction. (b) in the drawing shows a state in which the armature 15 and the connecting spring 16 are viewed from one side in the vertical direction. The armature 15 is formed with insertion pieces 41 projecting outward in the width direction and capable of being inserted into the grooves 21 at positions corresponding to the center in the vertical direction on both end sides in the width direction. The connection spring 16 is bent into a crank shape when viewed in the vertical direction so that the center in the width direction is fixed to the movable plunger 14 and the front end side in the width direction is closer to the front side in the depth direction than the center via a step. When there is no external load, the separation distance D between the tip side of the connecting spring 16 and the armature 15 is smaller than the depth dimension L from the ceiling surface 27 of the groove portion 21 to the bottom surface 32 of the groove portion 22 (FIG. 6(a)). The tip side of the connecting spring 16 is divided into two pieces with a gap 42 (recess) in the vertical direction. The gap 42 is located at the longitudinal center position of the connecting spring 16 and is formed in a U shape that opens outward in the width direction when viewed from the depth direction. The vertical dimension of the gap 42 is greater than the vertical dimension of the upper base of the protrusion 36 .

FIG. 6 is a diagram showing the connection state between the contact support 12 and the movable plunger 14. As shown in FIG.
(a) in the drawing shows a state in which the

grooves

21 and 22 on one side in the width direction are viewed from one side in the vertical direction. When the inserting piece 41 of the armature 15 is inserted into the groove 21 and the tip side of the connecting spring 16 is inserted into the groove 22, the tip side of the connecting spring 16 is pushed up by the guide surface 35 and the bottom surface 32 toward the front in the depth direction and bends. Therefore, the elastic force of the connecting spring 16 pulls the armature 15 forward in the depth direction and separates it from the bottom surface 26 of the groove 21 . At this time, the armature 15 and the connecting spring 16 sandwich the contact support 12 between the ceiling surface 27 and the bottom surface 32 . In this manner, the armature 15 presses the ceiling surface 27 of the groove 21 and the tip side of the connecting spring 16 presses the bottom surface 32 of the groove 22 , thereby connecting the movable plunger 14 to the contact support 12 .

(b) in the figure shows a cross section along the width direction and the longitudinal direction passing through the groove 22 on one side in the width direction, viewed from the front side in the depth direction. When the tip side of the connecting spring 16 is inserted into the groove 22, the other side of the connecting spring 16 in the vertical direction of the two pieces separated by the gap 42 is pushed up and bent forward in the depth direction by the slope (trapezoidal leg) and upper surface (upper base) of the convex portion 36. Then, when the other of the two pieces in the vertical direction gets over the upper surface of the projection 36 and the vertical center position of the projection 36 matches the vertical center position of the gap 42, the shape is restored. In this way, the gap 42 on the tip side of the connecting spring 16 fits into the convex portion 36 of the groove portion 22 , thereby restricting the vertical position of the connecting spring 16 .

《Effect》
Next, main effects of the first embodiment will be described.
The electromagnetic contactor 11 includes a contact support 12 , a movable plunger 14 and a connecting spring 16 . The contact point support 12 is provided on the front side in the predetermined depth direction, and has a groove portion 22 formed therein. The movable plunger 14 is provided on the far side in the depth direction and is driven by the electromagnet section 13 . The connecting spring 16 is a leaf spring, the center of which is fixed to the movable plunger 14, and the longitudinal tip side thereof is inserted into the groove portion 22 along the lateral direction. A convex portion 36 is formed in the groove portion 22, and a gap 42 serving as a concave portion is formed in the tip side of the connecting spring 16, and when the tip side of the connecting spring 16 is inserted into the groove portion 22, the gap 42 and the convex portion 36 are fitted to each other. In this way, when the tip side of the connecting spring 16 is inserted into the groove 22, the insertion position of the connecting spring 16 in the lateral direction is regulated by the gap 42 and the protrusion 36 being fitted to each other. Therefore, positional displacement of the connecting spring 16 can be suppressed.

A convex portion 36 is formed on the bottom surface 32 facing the front side in the depth direction of the groove portion 22, and the connecting spring 16 is divided into two pieces with a gap 42 in the lateral direction at the tip side thereof, and the concave portion is formed by the gap 42.例文帳に追加As a result, the gap 42 and the protrusion 36 are reliably fitted to each other, and displacement of the connection spring 16 can be suppressed. In addition, when assembling, it is possible to easily recognize that the insertion has been completed by obtaining a tactile response (feeling of click) when the gap 42 and the convex portion 36 are fitted.
The convex portion 36 has a trapezoidal shape in which the front side (upper base) is shorter than the deep side (lower base) in the depth direction when viewed from the inside in the longitudinal direction, and the gap 42 is fitted. Thereby, when inserting the tip end side of the connecting spring 16 into the groove part 22, the back side in the inserting direction of the two pieces separated by opening the gap 42 of the connecting spring 16 can easily get over the convex part 36.例文帳に追加

A guide surface 35 is formed on the entrance side of the groove portion 22 and is inclined toward the front side in the depth direction as it goes toward the depth side along the insertion direction. Thus, when the tip side of the connection spring 16 is inserted into the groove part 22, the tip side of the connection spring 16 is gradually lifted forward in the depth direction by the guide surface 35, and the tip side of the connection spring 16 can be guided to the groove part 22.例文帳に追加
A groove portion 21 is formed in the contact support 12 on the back side of the groove portion 22 in the depth direction. The electromagnetic contactor 11 has an armature 15 . The armature 15 is a plate-like magnetic body, is fixed to the movable plunger 14 together with the connecting spring 16, and is inserted into the groove 21 along the surface direction. By inserting the armature 15 into the groove 21 and the connecting spring 16 into the groove 22 in this manner, the movable plunger 14 can be firmly connected to the contact support 12 .

Next, a comparative example will be described.
In the comparative example, the convex portion 36 of the groove portion 22 is omitted, and the gap 42 on the tip side of the connecting spring 16 is omitted. Other than that, the configuration is the same as that of the first embodiment, so common parts are given the same reference numerals and detailed descriptions thereof are omitted.
FIG. 7 is a diagram showing a comparative example.
(a) in the drawing shows a state in which the

grooves

21 and 22 on one side in the width direction are viewed from one side in the vertical direction. (b) in the drawing is a state in which a cross section along the width direction and the longitudinal direction passing through the groove portion 22 on one side in the width direction is viewed from the front side in the depth direction. With a structure in which the connecting spring 16 is simply inserted into the groove 22, there is a possibility that positional deviation may occur due to vibration or assembly failure, which may affect the operation of the electromagnetic contactor.

<<Modification>>
In the first embodiment, the configuration in which the tip end side of the connecting spring 16 is divided into two pieces with the gap 42 opened has been described, but the present invention is not limited to this. That is, even if the tip side is not divided into two pieces, a hole penetrating in the depth direction or a bottomed recess that is concave toward the depth side may be formed as long as the shape fits the protrusion 36 .
In the first embodiment, the configuration in which the protrusions 36 that are trapezoidal when viewed in the width direction are provided has been described, but the configuration is not limited to this. That is, as long as it has a shape that fits in the concave portion of the connecting spring 16, a frustum or hemispherical convex portion may be provided.

<<Second embodiment>>
"composition"
The second embodiment shows another aspect of the groove portion 22 and the connecting spring 16, and since it has the same configuration as the first embodiment described above, the same reference numerals are given to the common parts, and detailed description is omitted.
FIG. 8 is a

diagram showing grooves

21 and 22 of the second embodiment.
(a) in the drawing shows a state in which the

grooves

21 and 22 on one side in the width direction are viewed from one side in the vertical direction, the other side in the width direction, and the front side in the depth direction. (b) in the drawing is a state in which a cross section along the width direction and the longitudinal direction passing through the groove portion 22 on one side in the width direction is viewed from the front side in the depth direction. A guide surface 51 is formed on the inlet side of the groove 22 and is inclined inward in the width direction toward the other side in the vertical direction. The side surface 31 of the groove portion 22 is formed with a concave portion 52 that is concave outward in the width direction and has a substantially rectangular shape when viewed in the width direction.

FIG. 9 is a diagram showing the armature 15 and the connecting spring 16 of the second embodiment.
(a) in the drawing shows a state in which the armature 15 and the connecting spring 16 are viewed from one side in the vertical direction, the other side in the width direction, and the front side in the depth direction. (b) in the drawing shows a state in which the armature 15 and the connecting spring 16 are viewed from the front side in the depth direction. A convex portion 53 that protrudes outward in the width direction is formed at the tip of the connecting spring 16 . The convex portion 53 is located at the center position in the longitudinal direction of the connecting spring 16, and the tip of the convex portion 53 has chamfered corners on both sides in the longitudinal direction.

FIG. 10 is a diagram showing the connected state of the second embodiment.
(a) in the drawing shows a state in which the

grooves

21 and 22 on one side in the width direction are viewed from one side in the vertical direction. (b) in the drawing is a state in which a cross section along the width direction and the depth direction passing through the concave portion 52 and the convex portion 53 is viewed from one side in the vertical direction. When the tip side of the connection spring 16 is inserted into the groove portion 22 , the convex portion 53 of the connection spring 16 contacts the guide surface 51 and the tip side of the connection spring 16 contacts the guide surface 35 . As a result, the tip side of the connecting spring 16 is pushed up toward the near side in the depth direction by the guide surfaces 51 and 35 and is bent. When the tip of the projection 53 is in contact with the side surface 31 , the tip side of the connecting spring 16 does not contact the bottom surface 32 . When the tip of the projection 53 reaches the recess 52 , the bending of the connection spring 16 on the tip side is reduced and contacts the bottom surface 32 . In this way, the projection 53 at the tip of the connection spring 16 fits into the recess 52 of the groove 22, thereby restricting the position of the connection spring 16 in the vertical direction.
Other configurations are the same as those of the first embodiment described above.

《Effect》
Next, main effects of the second embodiment will be described.
A concave portion 52 is formed on the side surface 31 of the groove portion 22 facing the tip of the connecting spring 16 , and a convex portion 53 is formed on the tip of the connecting spring 16 . As a result, when the tip side of the connecting spring 16 is inserted into the groove 22 , the concave portion 52 and the convex portion 53 are fitted together, and displacement of the connecting spring 16 can be suppressed. In addition, when assembling, it is possible to easily recognize that the insertion has been completed by obtaining a tactile response (feeling of click) when the concave portion 52 and the convex portion 53 are fitted to each other.
Other functions and effects are the same as those of the first embodiment described above.

<<Third Embodiment>>
"composition"
The third embodiment shows another aspect of the groove portion 22 and the connecting spring 16, and since it has the same configuration as the first embodiment described above, the same reference numerals are given to the common parts, and detailed explanation is omitted.
FIG. 11 is a

diagram showing grooves

21 and 22 of the third embodiment.
(a) in the drawing shows a state in which the

grooves

21 and 22 on one side in the width direction are viewed from one side in the vertical direction, the other side in the width direction, and the front side in the depth direction. (b) in the drawing is a state in which a cross section along the width direction and the longitudinal direction passing through the groove portion 22 on one side in the width direction is viewed from the front side in the depth direction. A bottom surface 32 of the groove portion 22 is formed with a recessed portion 55 that is recessed toward the back side in the depth direction and has a substantially rectangular shape when viewed from the depth direction.

FIG. 12 is a diagram showing the armature 15 and the connecting spring 16 of the third embodiment.
(a) in the drawing shows a state in which the armature 15 and the connecting spring 16 are viewed from one side in the vertical direction, the other side in the width direction, and the front side in the depth direction. (b) in the drawing shows the state of the connecting spring 16 viewed from one side in the vertical direction, the other side in the width direction, and the back side in the depth direction. On the tip end side of the connecting spring 16, a convex part 56 projecting further toward the inner side in the depth direction is formed at a position protruding most to the inner side in the depth direction among the surfaces facing the inner side in the depth direction. The convex portion 56 is located at the longitudinal center position of the connecting spring 16 . The convex portion 56 is formed by drawing, and the surface facing the front side in the depth direction is recessed toward the back side in the depth direction.

FIG. 13 is a diagram showing the connected state of the third embodiment.
(a) in the drawing shows a state in which the

grooves

21 and 22 on one side in the width direction are viewed from one side in the vertical direction. (b) in the drawing is a state in which a cross section along the width direction and the depth direction passing through the concave portion 55 and the convex portion 56 is viewed from one side in the vertical direction. When the tip side of the connecting spring 16 is inserted into the groove 22, the projection 56 of the connecting spring 16 contacts the guide surface 35, and the tip side of the connecting spring 16 is pushed up by the guide surface 35 toward the front side in the depth direction and bent. When the tip of the projection 56 reaches the recess 55 , the bending of the connection spring 16 on the tip side is reduced and contacts the bottom surface 32 . In this way, the projection 56 on the front end side of the connection spring 16 fits into the recess 55 of the groove 22, thereby restricting the position of the connection spring 16 in the vertical direction.
Other configurations are the same as those of the first embodiment described above.

《Effect》
Next, main effects of the third embodiment will be described.
A concave portion 55 is formed on the bottom surface 32 of the groove portion 22 facing the front side in the depth direction, and a convex portion 56 is formed on the front end side of the connecting spring 16 on the surface facing the back side in the depth direction. As a result, when the tip side of the connecting spring 16 is inserted into the groove 22 , the concave portion 55 and the convex portion 56 fit together, and the positional displacement of the connecting spring 16 can be suppressed. In addition, when assembling, it is possible to easily recognize that the insertion is completed by obtaining a tactile response (feeling of click) when the concave portion 55 and the convex portion 56 are fitted.
Other functions and effects are the same as those of the first embodiment described above.

<<Fourth Embodiment>>
"composition"
The fourth embodiment shows another aspect of the contact support 12, and other than that, it has the same configuration as the first embodiment described above, so common parts are given the same reference numerals and detailed explanations are omitted.
FIG. 14 is a diagram showing the contact support 12 of the fourth embodiment.
(a) in the drawing shows the contact support 12 viewed from one side in the vertical direction, the other side in the width direction, and the far side in the depth direction. (b) in the figure shows the contact support 12 viewed from the other side in the vertical direction, the other side in the width direction, and the back side in the depth direction. The contact point support 12 is formed with an interference portion 61 (connection spring interference portion) protruding toward the depth side in the depth direction on the inlet side of the groove portion 22 . Interference portion 61 extends from groove portion 22 on one side to groove portion 22 on the other side in the width direction.

FIG. 15 is a diagram showing a connected state of the fourth embodiment.
(a) in the drawing shows a state in which the

grooves

21 and 22 on one side in the width direction are viewed from one side in the vertical direction. (b) in the drawing is a state of the AA cross section along the vertical direction and depth direction passing through the interference portion 61 in the contact support 12, viewed from the inside in the width direction. When the tip side of the connection spring 16 is inserted into the groove portion 22, the tip side of the connection spring 16 is pushed up toward the front side in the depth direction by the guide surface 35 and the bottom surface 32 and is bent. At this time, since the tip side of the connecting spring 16 is pressed by the interference portion 61 , the tip side is extended outward in the width direction and deformed so as to pass through the interference portion 61 . Then, when the tip side of the connecting spring 16 exceeds the interference portion 61, the tip side is restored by its own elastic force so as to return inward in the width direction. At this time, as shown in (b) in the figure, the portion of the tip side of the connecting spring 16 that protrudes most toward the front side in the depth direction is positioned closer to the front side in the depth direction than the lower end of the interference portion 61.
Other configurations are the same as those of the first embodiment described above.

《Effect》
Next, main functions and effects of the fourth embodiment will be described.
The electromagnetic contactor 11 includes a contact support 12 , a movable plunger 14 and a connecting spring 16 . The contact point support 12 is provided on the front side in the predetermined depth direction, and has a groove portion 22 formed therein. The movable plunger 14 is provided on the far side in the depth direction and is driven by the electromagnet section 13 . The connecting spring 16 is a leaf spring, the center of which is fixed to the movable plunger 14, and the longitudinal tip side thereof is inserted into the groove portion 22 along the lateral direction. The contact support 12 is provided with an interference part 61 which is provided on the entrance side of the groove part 22 and interferes with the connection spring 16 to prevent it from coming off when the connection spring 16 inserted into the groove part 22 is displaced to the entrance side. As a result, even if the connecting spring 16 is displaced toward the inlet side of the groove 22 , the distal end side of the connecting spring 16 is caught by the interference portion 61 and can be prevented from falling out of the groove 22 . That is, it is possible to suppress the positional deviation of the connecting spring 16 .

The interference portion 61 protrudes toward the depth side in the depth direction. When the connecting spring 16 is inserted into the groove 22 , the distal end side of the connecting spring 16 is deformed so as to pass through the interfering portion 61 , and when it exceeds the interfering portion 61 , it is restored by its own elastic force. Thus, when the connecting spring 16 is inserted into the groove part 22, it can be allowed to pass through the interference part 61, and when the connecting spring 16 is about to be displaced to the entrance side after being inserted into the groove part 22, it can be prevented from coming off from the groove part 22. - 特許庁
Other functions and effects are the same as those of the first embodiment described above.

<<Modification>>
In the fourth embodiment, the configuration in which the interference section 61 is added based on the first embodiment has been described, but the configuration is not limited to this. That is, the interference part 61 may be added based on the second embodiment or the third embodiment. Furthermore, the configuration may be such that the interference portion 61 is added based on the comparative example of the first embodiment. That is, since the positional deviation of the connecting spring 16 is suppressed by the interference portion 61, the convex portion 36 of the groove portion 22 and the gap 42 of the connecting spring 16 may be omitted.

<<Fifth embodiment>>
"composition"
The fifth embodiment shows another aspect of the contact support 12, and since it has the same configuration as the first embodiment described above, the common parts are denoted by the same reference numerals and detailed explanations are omitted.
FIG. 16 is a diagram showing the contact support 12 of the fifth embodiment.
(a) in the drawing shows the contact support 12 viewed from one side in the vertical direction, the other side in the width direction, and the far side in the depth direction. (b) in the figure shows the contact support 12 viewed from the other side in the vertical direction, the other side in the width direction, and the back side in the depth direction. The contact support 12 is formed with an interference portion 62 (armature interference portion) protruding toward the inner side in the depth direction on the inlet side of the groove portion 21 . The interference portion 62 is provided on both one side and the other side in the width direction.

FIG. 17 is a diagram showing the connected state of the fifth embodiment.
(a) in the drawing shows a state in which the

grooves

21 and 22 on one side in the width direction are viewed from one side in the vertical direction. (b) in the drawing is a state of the BB cross section along the vertical direction and the depth direction of the contact support 12 as viewed from the inside in the width direction. When the inserting piece 41 of the armature 15 is inserted into the groove 21 and the tip side of the connecting spring 16 is inserted into the groove 22, the tip side of the connecting spring 16 is pushed up by the guide surface 35 and the bottom surface 32 toward the front in the depth direction and bends. Therefore, the elastic force of the connecting spring 16 pulls the armature 15 forward in the depth direction and separates it from the bottom surface 26 of the groove 21 . At this time, as shown in (b) of the figure, the upper surface of the armature 15 facing the front side in the depth direction is positioned closer to the front side in the depth direction than the lower end of the interference portion 62 .
Other configurations are the same as those of the first embodiment described above.

《Effect》
Next, main functions and effects of the fifth embodiment will be described.
The electromagnetic contactor 11 includes a contact support 12 , a movable plunger 14 and a connecting spring 16 . The contact point support 12 is provided on the front side in the predetermined depth direction, and has a groove portion 22 formed therein. The movable plunger 14 is provided on the far side in the depth direction and is driven by the electromagnet section 13 . The connecting spring 16 is a leaf spring, the center of which is fixed to the movable plunger 14, and the longitudinal tip side thereof is inserted into the groove portion 22 along the lateral direction. A groove portion 21 is formed in the contact support 12 on the back side of the groove portion 22 in the depth direction. The electromagnetic contactor 11 has an armature 15 . The armature 15 is a plate-like magnetic body, is fixed to the movable plunger 14 together with the connecting spring 16, and is inserted into the groove 21 along the surface direction. The contact support 12 is provided with an interference part 62 which is provided on the entrance side of the groove part 21 and interferes with the armature 15 to prevent it from coming off when the armature 15 inserted into the groove part 21 is displaced to the entrance side. As a result, even if the armature 15 is displaced toward the entrance side of the groove 21 , the armature 15 is caught by the interference portion 62 and can be prevented from falling out of the groove 21 . That is, it is possible to indirectly suppress the displacement of the connecting spring 16 via the armature 15 .

The interference portion 62 protrudes toward the depth side in the depth direction. When the armature 15 is inserted into the groove portion 21 and exceeds the interference portion 62 , it is displaced forward in the depth direction by the elastic force of the connecting spring 16 . Thus, when the armature 15 is inserted into the groove 21, it can be allowed to pass through the interfering part 62, and when the armature 15 is about to be displaced to the entrance side after being inserted into the groove 21, it can be prevented from coming off from the groove 21.例文帳に追加
Other functions and effects are the same as those of the first embodiment described above.

<<Modification>>
In the fifth embodiment, the configuration in which the interference section 62 is added based on the first embodiment has been described, but the configuration is not limited to this. That is, the interference part 62 may be added based on the second embodiment or the third embodiment. Furthermore, a configuration in which the interference portion 62 is added based on the comparative example of the first embodiment may be employed. That is, since the positional deviation of the connecting spring 16 is indirectly suppressed by the interference portion 62, the convex portion 36 of the groove portion 22 and the gap 42 of the connecting spring 16 may be omitted.

Although the above has been described with reference to a limited number of embodiments, the scope of rights is not limited thereto, and modifications of the embodiments based on the above disclosure are obvious to those skilled in the art.

11... Electromagnetic contactor, 12... Contact support, 13... Electromagnet part, 14... Movable plunger, 15... Armature, 16... Connection spring, 21... Groove part, 22... Groove part, 25... Side surface, 26... Bottom surface, 27... Ceiling surface, 28... End surface, 31... Side surface, 32... Bottom surface, 33... Ceiling surface, 34... End surface, 35... Guide surface, 36... Insertion piece, 42... Gap, 51... Guide surface, 52... Concave part, 53... Convex part, 55... Concave part, 56... Concave part, 61... Interference part, 62... Interference part

Claims

a contact support provided on the front side in a predetermined depth direction and having a connecting spring groove formed thereon;
a movable plunger provided on the far side in the depth direction and driven by an electromagnet;
a connecting spring that is a leaf spring and whose center is fixed to the movable plunger and whose longitudinal tip side is inserted into the connecting spring groove along the lateral direction;
One of a concave portion and a convex portion is formed in the connecting spring groove,
The other of the concave portion and the convex portion is formed on the tip side of the connecting spring,
The electromagnetic contactor, wherein the concave portion and the convex portion are fitted to each other when the tip side of the connecting spring is inserted into the connecting spring groove portion.
The connecting spring groove is formed with the convex portion on the surface facing the front side in the depth direction,
2. The electromagnetic contactor according to claim 1, wherein the connecting spring is divided into two pieces with a gap in the lateral direction at the tip side thereof, and the concave portion is formed by the gap.
3. The magnetic contactor according to claim 2, wherein the projection has a trapezoidal shape with a base on the front side that is shorter than a base on the back side in the depth direction when viewed from the inside in the longitudinal direction, and the gap is fitted.
The concave portion is formed in the surface facing the tip of the connecting spring in the connecting spring groove,
2. The electromagnetic contactor according to claim 1, wherein the connecting spring is formed with the projection at the tip.
The connecting spring groove is formed with the recess on a surface facing the front side in the depth direction,
2. The electromagnetic contactor according to claim 1, wherein the convex portion is formed on the front end side of the connecting spring on a surface facing the back side in the depth direction.
The magnetic contactor according to any one of claims 1 to 5, characterized in that a guide surface that is inclined toward the front side in the depth direction toward the depth side along the insertion direction is formed on the entrance side of the groove for the connecting spring.
a contact support provided on the front side in a predetermined depth direction and having a connecting spring groove formed thereon;
a movable plunger provided on the far side in the depth direction and driven by an electromagnet;
a connecting spring that is a leaf spring and whose center is fixed to the movable plunger and whose longitudinal tip side is inserted into the connecting spring groove along the lateral direction;
The contact support is provided on the inlet side of the connecting spring groove, and when the connecting spring inserted in the connecting spring groove is displaced toward the inlet side, the electromagnetic contactor is formed with a connecting spring interference portion that interferes with the connecting spring to prevent it from falling off.
The connection spring interference portion protrudes toward the depth side in the depth direction,
The tip side of the connection spring is deformed so as to pass through the connection spring interference portion when inserted into the connection spring groove portion, and is restored by its own elastic force when it exceeds the connection spring interference portion. The electromagnetic contactor according to claim 7.
An armature groove is formed in the contact support on the far side in the depth direction from the connection spring groove,
The magnetic contactor according to any one of claims 1 to 8, characterized by comprising an armature that is a plate-shaped magnetic body, is fixed to the movable plunger together with the connecting spring, and is inserted into the armature groove along the surface direction.
a contact support provided on the front side in a predetermined depth direction and having a connecting spring groove formed thereon;
a movable plunger provided on the far side in the depth direction and driven by an electromagnet;
a connecting spring that is a leaf spring and whose center is fixed to the movable plunger and whose longitudinal tip side is inserted into the connecting spring groove along the lateral direction;
An armature groove is formed in the contact support on the far side in the depth direction from the connection spring groove,
An armature, which is a plate-shaped magnetic body, is fixed to the movable plunger together with the connecting spring, and is inserted into the armature groove along the surface direction,
The contact support is provided on the inlet side of the armature groove, and when the armature inserted into the armature groove is displaced to the inlet side, the electromagnetic contactor is formed with an armature interference portion that interferes with the armature to prevent it from falling off.
The armature interference portion protrudes toward the depth side in the depth direction,
11. The electromagnetic contactor according to claim 10, wherein when the armature is inserted into the armature groove, the armature is displaced forward in the depth direction by the elastic force of the connecting spring when the armature interference portion is exceeded.