CN117616534A

CN117616534A - Electromagnetic contactor

Info

Publication number: CN117616534A
Application number: CN202280047241.4A
Authority: CN
Inventors: 和贺井大史; 高谷幸悦; 关谷优志
Original assignee: Fuji Electric FA Components and Systems Co Ltd
Current assignee: Fuji Electric FA Components and Systems Co Ltd
Priority date: 2022-01-21
Filing date: 2022-11-21
Publication date: 2024-02-27
Also published as: WO2023139912A1; KR20240011824A; JPWO2023139912A1; JP7487853B2

Abstract

The invention provides an electromagnetic contactor. The contact support (12) is provided on the front side in the predetermined depth direction, and a groove (22) is formed. The movable plunger (14) is provided on the inner side in the depth direction and is driven by the electromagnet portion (13). The connecting spring (16) is a leaf spring, the center of which is fixed to the movable plunger (14), and the front end side in the longer direction is inserted into the groove (22) in the shorter direction. A convex portion (36) is formed in the groove portion (22), a gap (42) serving as a concave portion is formed on the front end side of the connecting spring (16), and when the front end 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.

Description

Electromagnetic contactor

Technical Field

The present invention relates to an electromagnetic contactor.

Background art

The electromagnetic contactor is configured such that a movable plunger is coupled to a contact support via a coupling spring, as described in patent document 1, for example. The coupling spring is a leaf spring having a longer direction (also referred to as a longer side direction) and a shorter direction (also referred to as a shorter side direction), a movable plunger is fixed at the center of the longer direction, and both end sides of the longer direction are inserted into the groove portions of the contact support in the shorter direction to couple the coupling spring.

Prior art literature

Patent literature

Patent document 1: patent publication No. 6075508

Disclosure of Invention

Technical problem to be solved by the invention

Since the coupling spring is configured to be inserted only into the groove portion of the contact support, a misalignment (positional deviation) may occur due to vibration or poor assembly, and the operation of the electromagnetic contactor may be affected.

The invention aims to inhibit dislocation of a connecting spring in an electromagnetic contactor.

Technical means for solving the technical problems

An electromagnetic contactor according to an embodiment of the present invention includes a contact support, a movable plunger, and a coupling spring. The contact support is provided on the front side in the predetermined depth direction, and a connecting spring groove is formed. The movable plunger is provided on the inner side in the depth direction and is driven by the electromagnet portion. The connecting spring is a leaf spring, the center of which is fixed to the movable plunger, and the front end side in the longer direction is inserted into the connecting spring groove along the shorter direction. One of the concave portion and the convex portion is formed in the connecting spring groove portion, and the other of the concave portion and the convex portion is formed on the distal end side of the connecting spring. When the tip end side of the coupling spring is inserted into the coupling spring groove, the concave portion and the convex portion are fitted to each other.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, when the tip end side (i.e., tip end side portion) of the coupling spring is inserted into the coupling spring groove portion, the insertion position of the coupling spring in the shorter direction can be restricted by the recess portion and the projection portion being fitted to each other. Therefore, misalignment of the coupling springs can be suppressed.

Drawings

Fig. 1 is a diagram showing a part of an electromagnetic contactor.

Fig. 2 is a view showing the contact support and the movable plunger.

Fig. 3 is a view showing the contact support.

Fig. 4 is a diagram showing a groove portion and a groove portion.

Fig. 5 is a diagram showing the armature and the coupling spring.

Fig. 6a and 6b are diagrams showing a state where the contact support and the movable plunger are coupled.

Fig. 7 is a diagram showing a comparative example.

Fig. 8 is a diagram showing a groove portion and a groove portion according to the second embodiment.

Fig. 9 is a diagram showing an armature and a coupling spring according to the second embodiment.

Fig. 10 is a diagram showing a connection state of the second embodiment.

Fig. 11 is a diagram showing a groove portion and a groove portion according to the third embodiment.

Fig. 12 is a diagram showing an armature and a coupling spring according to the third embodiment.

Fig. 13 is a diagram showing a connection state of the third embodiment.

Fig. 14 is a view showing a contact support according to a fourth embodiment.

Fig. 15 is a diagram showing a connection state of the fourth embodiment.

Fig. 16 is a view showing a contact support according to a fifth embodiment.

Fig. 17 is a diagram showing a connection state of the fifth embodiment.

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Wherein the various figures are schematic and sometimes differ from the actual ones. The following embodiments are examples of an apparatus and a method for embodying the technical idea of the present invention, and the configuration thereof is not limited to the following. That is, the technical idea of the present invention can be variously changed within the technical scope described in the claims (summary of the invention).

First embodiment

Structure

In the following description, three directions orthogonal to each other are set to be a longitudinal direction, a width direction, and a depth direction for convenience of description.

Fig. 1 is a diagram showing a part of an electromagnetic contactor 11.

Here, the state when the electromagnetic contactor 11 is viewed from one side (one side) in the longitudinal direction, the other side (the other side) in the width direction, and the side immediately before the depth direction is shown. 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 rear side in the depth direction.

Fig. 2 is a view showing the contact support 12 and the movable plunger 14.

Here, the contact support 12 and the movable plunger 14 are shown as viewed from one side in the longitudinal direction, the other side in the width direction, and the near side in the depth direction.

The contact support 12 is made of resin, is formed in a substantially rectangular parallelepiped shape having a longitudinal dimension smaller than a width dimension and a depth dimension, and supports a movable contact, not shown.

The electromagnet portion 13 includes a movable plunger 14 capable of advancing and retreating in the depth direction. The movable plunger 14 is a columnar iron core extending in the depth direction, and advances and retreats in the depth direction in accordance with the ON/OFF (ON/OFF) of the electromagnet portion 13. An armature 15 and a coupling spring 16 are fixed to the end of the movable plunger 14 on the near side 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 (extending), and is formed in a substantially rectangular shape when viewed from the depth direction, and forms a magnetic circuit together with a yoke, not shown, and the movable plunger 14. The coupling spring 16 is a metal leaf spring having a substantially uniform thickness and extending in a width direction and a longitudinal direction, and the width direction is a longer direction and the longitudinal direction is a shorter direction. The coupling spring 16 is disposed on the front side of the armature 15 in the depth direction so as to overlap therewith, and is fixed to the movable plunger 14. The armature 15 and the coupling spring 16 are inserted into the inner side of the contact support 12 in the depth direction in the longitudinal direction, and thereby the movable plunger 14 is coupled to the contact support 12.

Fig. 3 is a view showing the contact support 12.

In the figure, (a) shows the contact support 12 when viewed from one side in the longitudinal direction, the other side in the width direction, and the near side in the depth direction. Fig. (b) shows a state when the contact support 12 is viewed from one side in the longitudinal direction. A pair of grooves 21 (armature grooves) into which the armature 15 is inserted and a pair of grooves 22 (coupling spring grooves) into which the coupling spring 16 is inserted are formed on the contact support 12 on the rear side (i.e., the rear side portion) in the depth direction. The pair of grooves 21 into which the armature 15 is inserted are provided on the inner side in the depth direction with a larger interval in the width direction than the pair of grooves 22 into which the coupling spring 16 is inserted.

Fig. 4 is a diagram showing the groove 21 and the groove 22.

In the figure, (a) shows the state of the groove portions 21 and 22 when the groove portions 21 and 22 are viewed from one side in the longitudinal direction, the other side in the width direction, and the side near the front side in the depth direction. In the figure, (b) is a state when a cross section in the width direction and the longitudinal direction is viewed from the side near the depth direction through the groove 22 on one side in the width direction.

The groove portion 21 into which the armature 15 is inserted includes: a side surface 25 facing the inner side in the width direction; a bottom surface 26 facing the front side in the depth direction; a top surface 27 facing the inner side in the depth direction; and a terminal surface (also referred to as "terminal surface") 28 facing one side in the longitudinal direction. Accordingly, the groove 21 is formed so that one side in the longitudinal direction and the inner side in the width direction are open. The distance from the bottom surface 26 to the top surface 27 is greater than the thickness of the armature 15. The portion from one end to the end face 28 in the longitudinal direction in the region sandwiched by the bottom face 26 and the top face 27 is the insertion range of the armature 15.

The groove 22 into which the coupling spring 16 is inserted includes: a side surface 31 facing the inner side in the width direction; a bottom surface 32 facing the front side in the depth direction; a top surface 33 facing the inner side in the depth direction; and a terminal surface 34 facing one side in the longitudinal direction. Accordingly, the groove 22 is formed so that one side in the longitudinal direction and the inner side in the width direction are open. The distance from the bottom surface 32 to the top surface 33 is greater than the height of the connecting spring 16 in the depth direction. The range from one end in the longitudinal direction to the end face 34 in the region sandwiched by the bottom face 32 and the top face 33 is the insertion range of the coupling spring 16. A guide surface 35 is formed on the inlet side of the groove 22, and is inclined toward the front side in the depth direction as going to the other side in the longitudinal direction. A convex portion 36 protruding toward the near side in the depth direction is formed on the bottom surface 32 on the outer side in the width direction. The convex portion 36 has a trapezoid shape having a shorter upper bottom than a lower bottom on a front side in a depth direction, more specifically, an isosceles trapezoid shape having inner angles at both ends of the lower bottom equal to each other, when viewed from the inner side in the width direction. The height of the protruding portion 36 is the thickness of the connecting spring 16.

Fig. 5 is a diagram showing the armature 15 and the coupling spring 16.

In the figure, (a) shows the state when the armature 15 and the coupling spring 16 are viewed from the near side in the depth direction. In the figure, (b) shows the state when the armature 15 and the coupling spring 16 are viewed from one side in the longitudinal direction. At the armature 15, at the positions of the both end sides in the width direction and the center in the longitudinal direction, insertion pieces 41 that can be inserted into the groove portions 21 are formed so as to protrude outward in the width direction. The coupling spring 16 is bent in a crank shape when seen in the longitudinal 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 located on the near side in the depth direction with a step (difference in the height plane) from the center. When no load is applied from the outside, the distance D between the distal end side of the coupling spring 16 and the armature 15 is smaller than the depth dimension L from the top surface 27 of the groove 21 to the bottom surface 32 of the groove 22 (fig. 6 a). The front end side of the coupling spring 16 is divided into two parts by forming a gap 42 (recess) in the longitudinal direction. The gap 42 is located at a central position in the longitudinal direction of the coupling spring 16, and is formed in a U shape that is open to the outside in the width direction when viewed in the depth direction. The longitudinal dimension of the gap 42 is greater than the longitudinal dimension of the upper bottom of the boss 36.

Fig. 6a and 6b are diagrams showing a state where the contact support 12 and the movable plunger 14 are coupled.

Fig. 6a shows the state when the groove portions 21 and 22 on one side in the width direction are viewed from one side in the longitudinal direction. When the insertion piece 41 of the armature 15 is inserted into the groove 21 and the tip end side of the coupling spring 16 is inserted into the groove 22, the tip end side of the coupling spring 16 is pushed upward by the guide surface 35 and the bottom surface 32 toward the near side in the depth direction to be bent. Therefore, the armature 15 is pulled toward the front side in the depth direction by the elastic force of the coupling spring 16, and is separated from the bottom surface 26 of the groove 21. At this time, the armature 15 and the coupling spring 16 sandwich a portion between the top surface 27 and the bottom surface 32 of the contact support 12. In this way, the armature 15 presses the top surface 27 of the groove 21 and the front end side of the coupling spring 16 presses the bottom surface 32 of the groove 22, thereby coupling the movable plunger 14 to the contact support 12.

Fig. 6b is a state when a cross section in the width direction and the longitudinal direction passing through the groove 22 on one side in the width direction is viewed from the side near the depth direction. When the distal end side of the coupling spring 16 is inserted into the groove 22, the other side in the longitudinal direction of the two portions of the coupling spring 16 separated by the gap 42 is pushed upward by the inclined surface (trapezoidal waist) and the upper surface (upper bottom) of the convex portion 36 to the near side in the depth direction and is bent. Also, when the other side in the longitudinal direction of the two portions passes over the upper surface of the convex portion 36, and the center position in the longitudinal direction of the convex portion 36 coincides with the center position in the longitudinal direction of the gap 42, the shape is restored. In this way, the gap 42 at the distal end side of the coupling spring 16 is fitted to the convex portion 36 of the groove 22, and the position of the coupling spring 16 in the longitudinal direction is restricted.

Effect of action

Next, the main operational effects of the first embodiment will be described.

The electromagnetic contactor 11 includes a contact support 12, a movable plunger 14, and a coupling spring 16. The contact support 12 is provided on the front side in the predetermined depth direction, and a groove 22 is formed. The movable plunger 14 is provided on the inner side in the depth direction and is driven by the electromagnet portion 13. The coupling spring 16 is a leaf spring (plate spring) and is fixed at the center thereof to the movable plunger 14, and the front end side in the longer direction is inserted into the groove 22 in the shorter direction. The groove 22 is formed with a convex portion 36, and a gap 42 serving as a concave portion is formed on the distal end side of the coupling spring 16, and the gap 42 and the convex portion 36 are fitted to each other when the distal end side of the coupling spring 16 is inserted into the groove 22. In this way, when the tip end side of the coupling spring 16 is inserted into the groove 22, the insertion position of the coupling spring 16 in the shorter direction is restricted by fitting the gap 42 and the convex portion 36 to each other. Therefore, misalignment of the coupling spring 16 can be suppressed.

The groove 22 has a convex portion 36 formed on the bottom surface 32 on the near side in the depth direction, and the front end side of the coupling spring 16 has a gap 42 formed in the shorter direction and divided into two parts, and a concave portion is formed by the gap 42. By adopting such a configuration, the gaps 42 and the projections 36 are reliably fitted, and misalignment of the coupling spring 16 can be suppressed. Further, at the time of assembly, by obtaining a feel (click feel) at the time of engagement of the clearance 42 and the boss 36, it is possible to easily recognize that the insertion is completed.

The convex portion 36 has a trapezoidal shape in which the bottom edge (upper bottom) of the front side in the depth direction is shorter than the bottom edge (lower bottom) of the rear side when seen from the inner side in the longer direction, and is fitted in the gap 42. By adopting such a configuration, when the distal end side of the coupling spring 16 is inserted into the groove 22, the portion of the coupling spring 16 on the rear side in the insertion direction, which is divided into two portions by the gap 42, can easily pass over the convex portion 36.

On the inlet side of the groove 22, a guide surface 35 is formed that is inclined toward the front side in the depth direction as going to the rear side in the insertion direction (that is, a guide surface 35 is formed that is inclined toward the front side in the depth direction as going to the rear side in the insertion direction). By adopting such a configuration, when the distal end side of the coupling spring 16 is inserted into the groove 22, the distal end side of the coupling spring 16 is gradually lifted up toward the near side in the depth direction by the guide surface 35, and the distal end side of the coupling spring 16 can be guided to the groove 22.

The contact support 12 has a groove 21 formed on the rear side in the depth direction from the groove 22. The electromagnetic contactor 11 includes an armature 15. The armature 15 is a plate-shaped magnetic body, is fixed to the movable plunger 14 together with the coupling spring 16, and is inserted into the groove 21 in the planar direction. In this way, by inserting the armature 15 into the groove 21 and inserting the coupling spring 16 into the groove 22, the movable plunger 14 can be firmly coupled 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, the gap 42 on the distal end side of the coupling spring 16 is omitted, and the same reference numerals are given to common parts as in the first embodiment, and detailed description thereof is omitted.

Fig. 7 is a diagram showing a comparative example.

In the figure, (a) shows the state when the groove portions 21 and 22 on one side in the width direction are viewed from one side in the longitudinal direction. In the figure, (b) shows a state when a cross section along the width direction and the longitudinal direction of the groove 22 passing through one side in the width direction is viewed from the side near the depth direction. If the coupling spring 16 is simply inserted into the groove 22, the electromagnetic contactor may be displaced due to vibration or poor assembly, and the operation of the electromagnetic contactor may be affected.

Modification of the invention

In the first embodiment, the configuration in which the gap 42 is formed at the distal end side of the coupling spring 16 and divided into two is described, but the present invention is not limited to this. That is, even if the tip end side is not divided into two parts, if the tip end side is in a shape to be fitted with the convex portion 36, a hole penetrating in the depth direction and a concave portion having a bottom to be recessed toward the back side in the depth direction may be formed.

In the first embodiment, the configuration in which the convex portion 36 having a trapezoidal shape when viewed in the width direction is provided has been described, but the present invention is not limited thereto. That is, if the shape is fitted in the concave portion of the coupling spring 16, the shape may be a truncated cone or a hemispherical convex portion.

Second embodiment

Structure

The second embodiment describes other modes of the groove 22 and the coupling spring 16, and the other configurations are the same as those of the first embodiment described above, and common portions are given the same reference numerals, and detailed description thereof is omitted.

Fig. 8 is a diagram showing the groove portion 21 and the groove portion 22 of the second embodiment.

In the figure, (a) shows the state of the groove portions 21 and 22 when the groove portions 21 and 22 are viewed from one side in the longitudinal direction, the other side in the width direction, and the side near the front side in the depth direction. In the figure, (b) is a state when a cross section along the width direction and the longitudinal direction of the groove 22 passing through one side in the width direction is viewed from the side near the depth direction. On the inlet side of the groove 22, a guide surface 51 is formed that is inclined toward the inside in the width direction as going toward the other side in the longitudinal direction. A recess 52 which is recessed outward in the width direction and is substantially rectangular when viewed in the width direction is formed in the side surface 31 of the groove 22.

Fig. 9 is a diagram showing the armature 15 and the coupling spring 16 according to the second embodiment.

In the figure, (a) shows the state when the armature 15 and the coupling spring 16 are viewed from one side in the longitudinal direction, the other side in the width direction, and the near side in the depth direction. In the drawing, (b) shows the state when the armature 15 and the coupling spring 16 are viewed from the near side in the depth direction. A convex portion 53 protruding outward in the width direction is formed at the tip of the coupling spring 16. The convex portion 53 is located at the center of the connecting spring 16 in the longitudinal direction, and corners of the distal end of the convex portion 53 on both sides in the longitudinal direction are chamfered.

Fig. 10 is a diagram showing a connection state of the second embodiment.

In the figure, (a) shows the state when the groove portions 21 and 22 on one side in the width direction are viewed from one side in the longitudinal direction. In the figure, (b) is a state when a cross section in 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 longitudinal direction. When the distal end side of the coupling spring 16 is inserted into the groove 22, the convex portion 53 of the coupling spring 16 contacts the guide surface 51, and the distal end side of the coupling spring 16 contacts the guide surface 35. By adopting such a configuration, the distal end side of the coupling spring 16 is pushed up and bent toward the near side in the depth direction by the guide surface 51 and the guide surface 35. When the tip of the protruding portion 53 contacts the side surface 31, the tip side of the coupling spring 16 does not contact the bottom surface 32. When the tip of the convex portion 53 reaches the concave portion 52, the bending of the tip side of the coupling spring 16 is reduced, and the coupling spring contacts the bottom surface 32. In this way, by fitting the convex portion 53 of the distal end of the coupling spring 16 into the concave portion 52 of the groove portion 22, the position of the coupling spring 16 in the longitudinal direction is restricted.

The other structure is the same as the first embodiment described earlier.

Effect of action

Next, the main operational effects of the second embodiment will be described.

The groove 22 has a concave portion 52 formed in the side surface 31 facing the front end of the coupling spring 16, and a convex portion 53 formed in the front end of the coupling spring 16. By adopting such a configuration, when the distal end side of the coupling spring 16 is inserted into the groove 22, the concave portion 52 and the convex portion 53 are fitted, and displacement of the coupling spring 16 can be suppressed. Further, at the time of assembly, by obtaining a feel (click feel) at the time of fitting the concave portion 52 and the convex portion 53, it is possible to recognize that the insertion is completed.

Other operational effects are the same as those of the first embodiment described earlier.

Third embodiment

Structure

The third embodiment describes other modes of the groove 22 and the coupling spring 16, and the other configurations are the same as those of the first embodiment described above, and common portions are given the same reference numerals, and detailed description thereof is omitted.

Fig. 11 is a diagram showing the groove portion 21 and the groove portion 22 of the third embodiment.

In the figure, (a) shows the state of the groove portions 21 and 22 when the groove portions 21 and 22 are viewed from one side in the longitudinal direction, the other side in the width direction, and the side near the front side in the depth direction. In the figure, (b) is a state when a cross section along the width direction and the longitudinal direction of the groove 22 passing through one side in the width direction is viewed from the side near the depth direction. A recess 55 having a substantially rectangular shape when viewed from the depth direction is formed in the bottom surface 32 of the groove 22.

Fig. 12 is a diagram showing an armature 15 and a coupling spring 16 according to the third embodiment.

In the figure, (a) shows the state when the armature 15 and the coupling spring 16 are viewed from one side in the longitudinal direction, the other side in the width direction, and the near side in the depth direction. In the figure, (b) shows the state when the coupling spring 16 is viewed from one side in the longitudinal direction, the other side in the width direction, and the back side in the depth direction. A convex portion 56 that protrudes further toward the inner side in the depth direction is formed on the front end side of the coupling spring 16 at a position most protruding toward the inner side in the depth direction from the inner side surface in the depth direction. The convex portion 56 is located at a central position in the longitudinal direction of the coupling spring 16. The convex portion 56 is formed by drawing, and is recessed toward the back side in the depth direction on the surface of the front side in the depth direction.

Fig. 13 is a diagram showing a connection state of the third embodiment.

In the figure, (a) shows the state when the groove portions 21 and 22 on one side in the width direction are viewed from one side in the longitudinal direction. In the figure, (b) is a state when a cross section in 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 longitudinal direction. When the distal end side of the coupling spring 16 is inserted into the groove 22, the convex portion 56 of the coupling spring 16 contacts the guide surface 35, and the distal end side of the coupling spring 16 is pushed upward by the guide surface 35 toward the near side in the depth direction and is bent. When the tip of the convex portion 56 reaches the concave portion 55, the bending of the tip side of the coupling spring 16 is reduced, and the coupling spring contacts the bottom surface 32. In this way, the position of the coupling spring 16 in the longitudinal direction is restricted by fitting the convex portion 56 on the tip end side of the coupling spring 16 into the concave portion 55 of the groove portion 22.

The other structure is the same as the first embodiment described earlier.

Effect of action

Next, the main operational effects of the third embodiment will be described.

The groove 22 has a recess 55 formed in the bottom surface 32 on the near side in the depth direction, and a protrusion 56 formed in the front end side of the coupling spring 16 and on the rear side in the depth direction. By adopting such a configuration, when the distal end side of the coupling spring 16 is inserted into the groove 22, the concave portion 55 and the convex portion 56 are fitted, and therefore, displacement of the coupling spring 16 can be suppressed. Further, at the time of assembly, by obtaining a feel (click feel) at the time of engagement of the concave portion 55 and the convex portion 56, it is possible to recognize that the insertion is completed.

Fourth embodiment

Structure

The fourth embodiment describes other modes of the contact support 12, and the other configurations are the same as those of the first embodiment described above, and common portions are given the same reference numerals, and detailed description thereof is omitted.

Fig. 14 is a view showing the contact support 12 of the fourth embodiment.

Fig. (a) shows a state when the contact support 12 is viewed from one side in the longitudinal direction, the other side in the width direction, and the inner side in the depth direction. Fig. (b) shows the contact support 12 when viewed from the other side in the longitudinal direction, the other side in the width direction, and the inner side in the depth direction. In the contact support 12, an interference portion 61 (coupling spring interference portion) is formed on the inlet side of the groove 22 so as to protrude toward the deep side. The interference portion 61 extends from the groove portion 22 on one side to the groove portion 22 on the other side in the width direction.

Fig. 15 is a diagram showing a connection state of the fourth embodiment.

In the figure, (a) shows the state when the groove portions 21 and 22 on one side in the width direction are viewed from one side in the longitudinal direction. In the figure, (b) is a state when the cross section A-A of the passage blocking portion 61 of the contact support 12 along the longitudinal direction and the depth direction is viewed from the inner side in the width direction. When the distal end side of the coupling spring 16 is inserted into the groove 22, the distal end side of the coupling spring 16 is pushed upward and bent toward the near side in the depth direction by the guide surface 35 and the bottom surface 32. At this time, since the distal end side of the coupling spring 16 is pressed by the interference portion 61, the distal end side is stretched to the outer side in the width direction, deformed, and drilled (pressed) below the interference portion 61. When the distal end side of the coupling spring 16 passes through the interference portion 61, the distal end side returns to the inner side in the width direction by its own elastic force. At this time, as shown in (b), the portion of the distal end side of the coupling spring 16 that most protrudes to the near side in the depth direction is located at the near side in the depth direction from the lower end of the interference portion 61.

The other structure is the same as the first embodiment described earlier.

Effect of action

Next, the main operational effects of the fourth embodiment will be described.

The electromagnetic contactor 11 includes a contact support 12, a movable plunger 14, and a coupling spring 16. The contact support 12 is provided on the front side in the predetermined depth direction, and a groove 22 is formed. The movable plunger 14 is provided on the inner side in the depth direction and is driven by the electromagnet portion 13. The coupling spring 16 is a leaf spring, and is fixed at the center to the movable plunger 14, and the longer-direction tip side is inserted into the groove 22 in the shorter direction. In the contact support 12, an interference portion 61 is formed on the inlet side of the groove portion 22, and when the coupling spring 16 inserted in the groove portion 22 is displaced to the inlet side, the interference portion 61 interferes with the coupling spring 16 to prevent the coupling spring 16 from coming out. By adopting such a configuration, even if the coupling spring 16 is displaced to the inlet side of the groove 22, the distal end side of the coupling spring 16 is caught by the interference portion 61, and the escape from the groove 22 can be prevented. That is, misalignment of the coupling spring 16 can be suppressed.

The interference portion 61 protrudes inward in the depth direction. The distal end side of the coupling spring 16 is deformed and is drilled below the interference portion 61 when inserted into the groove portion 22, and is restored (recovered) by its own elastic force when exceeding the interference portion 61. By adopting such a configuration, the passage of the interference portion 61 can be allowed when the coupling spring 16 is inserted into the groove 22, and the escape from the groove 22 can be prevented when the coupling spring 16 is to be displaced toward the inlet side after being inserted into the groove 22.

Modification of the invention

In the fourth embodiment, the configuration in which the interference portion 61 is added to the first embodiment has been described, but the present invention is not limited to this. That is, the second and third embodiments may be configured to add the interference portion 61. Further, the interference portion 61 may be added to the comparative example of the first embodiment. That is, since the displacement of the coupling spring 16 can be suppressed by the interference portion 61, the convex portion 36 of the groove portion 22 and the gap 42 of the coupling spring 16 may be omitted.

Fifth embodiment

Structure

The fifth embodiment describes other modes of the contact support 12, and the configuration other than this is the same as that of the first embodiment described above, and common parts are given the same reference numerals, and detailed description thereof is omitted.

Fig. 16 is a view showing the contact support 12 of the fifth embodiment.

Fig. (a) shows a state when the contact support 12 is viewed from one side in the longitudinal direction, the other side in the width direction, and the inner side in the depth direction. Fig. (b) shows the contact support 12 when viewed from the other side in the longitudinal direction, the other side in the width direction, and the inner side in the depth direction. In the contact support 12, an interference portion 62 (armature interference portion) that protrudes toward the deep inner side of the groove portion 21 is formed on the inlet side. The interference portion 62 is provided on both one side and the other side in the width direction.

Fig. 17 is a diagram showing a connection state of the fifth embodiment.

In the figure, (a) shows the state when the groove portions 21 and 22 on one side in the width direction are viewed from one side in the longitudinal direction. Fig. (B) is a state when the B-B section of the contact support 12 along the longitudinal direction and the depth direction is viewed from the inner side in the width direction. When the insertion piece 41 of the armature 15 is inserted into the groove 21 and the tip end side of the coupling spring 16 is inserted into the groove 22, the tip end side of the coupling spring 16 is pushed upward and bent toward the near side in the depth direction by the guide surface 35 and the bottom surface 32. Therefore, the armature 15 is pulled toward the front side in the depth direction by the elastic force of the coupling spring 16, and is separated from the bottom surface 26 of the groove 21. At this time, as shown in (b), the upper surface of the armature 15 facing the near side in the depth direction is located at a position near the near side in the depth direction from the lower end of the interference portion 62.

The other structure is the same as the first embodiment described earlier.

Effect of action

Next, the main operational effects of the fifth embodiment will be described.

The electromagnetic contactor 11 includes a contact support 12, a movable plunger 14, and a coupling spring 16. The contact support 12 is provided on the front side in the predetermined depth direction, and a groove 22 is formed. The movable plunger 14 is provided on the inner side in the depth direction and is driven by the electromagnet portion 13. The coupling spring 16 is a leaf spring, and is fixed at the center to the movable plunger 14, and the longer-direction tip side is inserted into the groove 22 in the shorter direction. The contact support 12 has a groove 21 formed on the rear side in the depth direction from the groove 22. The electromagnetic contactor 11 includes an armature 15. The armature 15 is a plate-shaped magnetic body, is fixed to the movable plunger 14 together with the coupling spring 16, and is inserted into the groove 21 in the plane direction. In the contact support 12, an interference portion 62 is formed on the inlet side of the groove portion 21, and when the armature 15 inserted in the groove portion 21 is displaced to the inlet side, the interference portion 62 interferes with the armature 15 to prevent the armature 15 from coming off. By adopting such a configuration, even if the armature 15 is displaced to the inlet side of the groove portion 21, the armature 15 is caught by the interference portion 62, and the escape from the groove portion 21 can be prevented. That is, the displacement of the coupling spring 16 can be indirectly suppressed by the armature 15.

The interference portion 62 protrudes toward the rear side in the depth direction. When the armature 15 is inserted into the groove 21, it is displaced toward the front side in the depth direction by the elastic force of the coupling spring 16 until the armature exceeds the interference portion 62. By adopting such a configuration, the armature 15 can be allowed to pass through the interference portion 62 when inserted into the groove portion 21, and the armature 15 can be prevented from coming out of the groove portion 21 when it is to be displaced toward the inlet side after being inserted into the groove portion 21.

Modification of the invention

In the fifth embodiment, the configuration in which the interference portion 62 is added to the first embodiment has been described, but the present invention is not limited to this. That is, the interference portion 62 may be added to the second and third embodiments. Further, the interference portion 62 may be added to the comparative example of the first embodiment. That is, since the displacement of the coupling 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 coupling spring 16 may be omitted.

While the present invention has been described with reference to a limited number of embodiments, the scope of the claims is not limited to these embodiments, and modifications to the embodiments based on the above disclosure will be apparent to those skilled in the art.

Description of the reference numerals

An electromagnetic contactor of 11 …, a contact support of 12 …, an electromagnet portion of 13 …, a movable plunger of 14 …, an armature of 15 3835, a coupling spring of 16 …, a slot portion of 21 …, a slot portion of 22 …, a side surface of 25 …, a bottom surface of 26 …, a top surface of 27 …, a terminal surface of 28 …, a side surface of 31 …, a bottom surface of 32 …, a top surface of 33 …, a terminal surface of 34 …, a guide surface of 35 …, a convex portion of 36 …, a gap of 41 …, a guide surface of 51 …, a concave portion of 52 …, a convex portion of 53 …, a convex portion of 55 …, a convex portion of 61 …, and a blocking portion of 62 ….

Claims

1. An electromagnetic contactor, comprising:

a contact support member provided on a front side in a predetermined depth direction and having a groove portion for connecting the spring;

a movable plunger provided on the inner side in the depth direction and driven by the electromagnet portion; and

a connecting spring which is a leaf spring, wherein the center of the connecting spring is fixed to the movable plunger, the front end side of the connecting spring in the longer direction can be inserted into the connecting spring groove part in the shorter direction,

one of a concave portion and a convex portion is formed in the connecting spring groove portion,

the other of the concave portion and the convex portion is formed on the tip side of the connecting spring,

the concave portion and the convex portion are fitted to each other when the tip end side of the coupling spring is inserted into the coupling spring groove portion.

2. The electromagnetic contactor as claimed in claim 1, wherein:

the convex portion is formed on a surface of the connecting spring groove portion facing the front side in the depth direction,

the connecting spring has a gap formed at a front end side thereof in the shorter direction and divided into two parts, and the recess is formed by the gap.

3. The electromagnetic contactor as claimed in claim 2, wherein:

the convex portion has a trapezoid shape in which a bottom edge of a front side in the depth direction is shorter than a bottom edge of a rear side when viewed from the inner side in the longer direction, and the convex portion is fitted in the gap.

4. The electromagnetic contactor as claimed in claim 1, wherein:

the concave portion is formed on a surface of the connecting spring groove portion facing the front end of the connecting spring,

the convex portion is formed at the tip of the connecting spring.

5. The electromagnetic contactor as claimed in claim 1, wherein:

the concave portion is formed on a surface of the connecting spring groove portion facing the front side in the depth direction,

the convex portion is formed on a surface of the distal end side of the connecting spring, the surface facing the inner side in the depth direction.

6. The electromagnetic contactor according to any one of claims 1 to 5, wherein:

a guide surface inclined so as to be closer to the front side in the depth direction as going to the rear side in the insertion direction is formed on the inlet side of the coupling spring groove portion.

7. An electromagnetic contactor, comprising:

the contact support is formed with a coupling spring interference portion provided on an inlet side of the coupling spring groove portion, and the coupling spring interference portion prevents the coupling spring from coming out when the coupling spring inserted into the coupling spring groove portion is displaced toward the inlet side.

8. The electromagnetic contactor as claimed in claim 7, wherein:

the connecting spring interference part protrudes to the inner side of the depth direction,

the distal end side of the coupling spring is deformed when inserted into the coupling spring groove portion, is drilled below the coupling spring interference portion, and is restored by its own elastic force after exceeding the coupling spring interference portion.

9. The electromagnetic contactor according to any one of claims 1 to 8, wherein:

an armature groove is formed in the contact support member at a position on the inner side of the coupling spring groove in the depth direction,

the electromagnetic contactor includes an armature, which is a plate-shaped magnetic body, fixed to the movable plunger together with the coupling spring, and is insertable into the armature groove in a planar direction.

10. An electromagnetic contactor, comprising:

the electromagnetic contactor includes an armature which is a plate-shaped magnetic body and is fixed to the movable plunger together with the coupling spring, the armature being insertable into the armature groove in a planar direction,

an armature interference portion is formed in the contact support, the armature interference portion being provided on an inlet side of the armature groove portion, and the armature interference portion interfering with the armature to prevent the armature from coming off when the armature inserted into the armature groove portion is displaced toward the inlet side.

11. The electromagnetic contactor as claimed in claim 10, wherein:

the armature interference portion protrudes toward the deep side in the depth direction,

when the armature is inserted into the armature groove, the armature is displaced toward the front side in the depth direction by the elastic force of the coupling spring after exceeding the armature interference portion.