KR20230158607A - Electromagnetic contactor and assembly method of electromagnetic contactor - Google Patents

Abstract

The contact support portion 28 exclusively for plunger-type electromagnets is integrally inserted into the upper frame 11B to form a unit for plunger-type electromagnets, or the contact support portion 55 exclusively for leg-type electromagnets is integrally inserted into the upper frame 11B to create a leg-type electromagnet unit. Use a unit for electromagnets. Subsequently, the connection springs 18, 76 on one side of the plunger type electromagnet 12 and the leg type electromagnet 60 are connected to the connection insertion portions 32a, 32b on one side of the plunger type electromagnet unit and the leg type electromagnet unit. Insert the slide into the opening of 75a, 75b). Subsequently, the upper edge of the lower frame 11A is engaged with the lower edge of the upper frame to form a housing.

Description

Electromagnetic contactor and assembly method of electromagnetic contactor

The present invention relates to an electromagnetic contactor and a method of assembling the electromagnetic contactor.

An electromagnetic contactor, comprising a lower frame and an upper frame constituting a main body case of an upper and lower split type, a contact mechanism built into the upper frame, and an operating electromagnet built into the lower frame to turn the contact mechanism on and off, the contact mechanism comprising: a fixed contact fixed to the upper frame, a contact support part movably disposed inside the upper frame and connected to the operating electromagnet, and a contact support part supported by the contact support part, so that the movable contact contacts the fixed contact point of the fixed contactor. A device having a movable contactor is known (e.g., Patent Document 1).

Patent Document 1: Japanese Patent Publication No. 2015-118915

However, as an operating electromagnet for an electromagnetic contactor, one of a plunger type electromagnet and a leg type electromagnet are used. A plunger-type electromagnet is an electromagnet that has a plunger that moves up and down and an armature that protrudes outward from the end of the plunger, and a leg-type electromagnet is an electromagnet that has a movable iron core that moves up and down. Due to the differences in the structures of the plunger-type electromagnet and the leg-type electromagnet, different contact mechanisms and connection structures of the operating electromagnets have been used.

Therefore, the assembly of a conventional electromagnetic contactor involves assembling each part using a different process using a plunger-type electromagnet and a leg-type electromagnet, and requires a different assembly line. As a result, the number of steps is large and the assembly line is long, which increases facility investment. There is a problem in terms of the manufacturing cost of the electromagnetic contactor as it increases.

Therefore, the present invention has been made with attention to the unsolved problems of the above-described prior art, and in the case of manufacturing an electromagnetic contactor using either a plunger-type electromagnet or a leg-type electromagnet as an operating electromagnet, the assembly line is partially shared to reduce the number of assembly steps. The purpose is to provide an electromagnetic contactor and a method of assembling the electromagnetic contactor that can reduce manufacturing costs by reducing investment in assembly equipment by shortening the assembly line.

In order to achieve the above object, one aspect of the electromagnetic contactor according to the present invention includes a lower frame and an upper frame constituting an upper and lower split housing, a movable contactor disposed inside the upper frame and having a pair of movable contact points, A contact mechanism including a pair of fixed contacts having a pair of movable contacts and a fixed contact capable of contacting a contact support portion for supporting the movable contacts, and a contact mechanism disposed inside the lower frame and turning the contact mechanism on and off through the contact support portion. In the electromagnetic contactor provided with an electromagnet for operation and connecting the contact support and the electromagnet by sliding and moving in a direction intersecting the driving direction of the electromagnet, the contact support is integrally inserted into the upper frame and is slid and moved to form the contact support. and an electromagnet were connected.

In addition, one aspect of the method of assembling an electromagnetic contactor according to the present invention is the method of assembling the above-described electromagnetic contactor, which includes a first assembly step of integrally fitting the upper frame and the contact support portion of the contact mechanism, and a first assembly step of integrally fitting the contact support portion of the upper frame and the contact mechanism, and It includes a second assembly step of inserting the contact support portion into the electromagnet by sliding it, and a third assembly step of forming a housing by engaging the upper edge of the lower frame with the lower edge of the upper frame.

According to the electromagnetic contactor and the method of assembling the electromagnetic contactor of the present invention, when manufacturing an electromagnetic contactor using one of a plunger-type electromagnet and a leg-type electromagnet as an operating electromagnet, a contact support part dedicated to the plunger-type electromagnet is integrated into the upper frame. Insert it into a plunger-type electromagnet unit, or insert the contact support for leg-type electromagnets into the upper frame as a unit to create a leg-type electromagnet unit. In addition, since one connection insertion part of these plunger-type electromagnet units and leg-type electromagnet units is connected to one side of the plunger-type electromagnet and leg-type electromagnet, the process of inserting the contact support part into the upper frame is common as the initial process. can do. Therefore, when using a plunger-type electromagnet and a leg-type electromagnet as the operating electromagnet, compared to the assembly line of a conventional electromagnetic contactor in which a series of processes for the electromagnetic contactor were performed on a different assembly line, an assembly line that reduces the number of assembly steps is used. can do. In addition, the present invention can shorten the assembly line, reduce investment in assembly equipment, and reduce manufacturing costs when manufacturing an electromagnetic contactor using either a plunger-type electromagnet or a leg-type electromagnet as the operating electromagnet. .

1 is a perspective view showing an electromagnetic contactor of a first embodiment according to the present invention.
Figure 2 is a view showing the electromagnetic contactor of the first embodiment according to the present invention from the front.
Fig. 3 is a cross-sectional view showing the electromagnetic contactor of the first embodiment using a plunger-type electromagnet as the operating electromagnet.
FIG. 4 is a diagram showing a plunger-type electromagnet constituting an electromagnetic contactor in the first embodiment.
Fig. 5 is a perspective view showing the structure of a contact support portion constituting a contact mechanism dedicated to a plunger type electromagnet in the first embodiment.
Fig. 6 is a perspective view showing the upper frame constituting the contact mechanism dedicated to the plunger type electromagnet and the contact support portion disposed on the upper frame in the first embodiment.
FIG. 7 is an enlarged view of the inside of the circle indicated by symbol A in FIG. 3.
Fig. 8 is a diagram showing the electromagnetic contactor of the first embodiment from above.
Fig. 9 is a diagram showing a state in which the contact support portion and the upper frame of the contact mechanism dedicated to the plunger type electromagnet are relatively moved so that the contact gap between the fixed contact and the movable contact is eliminated in the first embodiment.
Figure 10 shows the connection insertion part of the contact support part being connected to the connection spring of the electromagnet by sliding the contact mechanism dedicated to the plunger type electromagnet with respect to the electromagnet without interfering with a part of the electromagnet (front flange part) of the step formed in the upper frame. This is a diagram showing the initial state of Shiki.
Figure 11 shows a contact mechanism dedicated to a plunger-type electromagnet, in which the connection of the connection insertion part of the contact support part and the connection spring of the electromagnet is completed by sliding movement, and the step part of the upper frame is moved to a position where it does not interfere with part of the electromagnet. This is a drawing showing the state.
Fig. 12 is a cross-sectional view showing the electromagnetic contactor of the second embodiment using a leg-type electromagnet as an operating electromagnet.
Fig. 13 is a perspective view showing the structure of the contact support portion constituting the contact mechanism dedicated to the leg-type electromagnet in the second embodiment.
Fig. 14 is a diagram showing a state in which a leg-type electromagnet having a movable iron core is connected to a contact support portion dedicated to the leg-type electromagnet in the second embodiment.

Next, with reference to the drawings, an embodiment according to the present invention will be described. In the description of the drawings below, identical or similar parts are given identical or similar symbols. However, it should be noted that the drawings are schematic, and the relationship between thickness and planar dimension, the ratio of the thickness of each layer, etc. are different from those in reality. Therefore, specific thickness and dimensions should be determined by taking into account the following description. In addition, it goes without saying that parts with different dimensional relationships or ratios are included among the drawings.

In addition, the embodiment shown below exemplifies an apparatus or method for embodying the technical idea of the present invention, and the technical idea of the present invention is to specify the material, shape, structure, arrangement, etc. of the component parts as follows. That is not the case. The technical idea of the present invention can be subject to various changes within the technical scope defined by the claims stated in the patent claims.

In addition, directions such as “top”, “bottom”, “left”, “right”, “bottom”, “front”, “rear”, “long direction”, “short direction”, etc. are described in the description below. The terms indicated are used with reference to the directions in the accompanying drawings.

The electromagnetic contactor 10 of 1st Embodiment which concerns on this invention is demonstrated with reference to FIGS. 1 to 11.

As for the electromagnetic contactor 10 of 1st Embodiment shown in FIG. 1, the housing is comprised by the 1st frame 11A and the 2nd frame 11B being connected to each other in the front-back direction. Attachment plate portions 51 are formed at the four bottom corners of the bottomed rectangular tube-shaped portion 50 of the first frame 11A. The second frame 11B has a square cylinder portion 52 with an open front end facing the bottomed rectangular cylinder portion 50 of the first frame 11A.

In front of the square barrel portion 52 of the second frame 11B, as shown in FIG. 2, a power supply side terminal portion 53a and an auxiliary terminal portion 54a are formed at the upper side, and a load side terminal portion 53b and an auxiliary terminal portion are formed at the lower portion. (54b) is formed.

FIG. 3 shows the internal structure of the electromagnetic contactor 10, with a contact mechanism 13 built into the second frame 11B and a first frame 11A (not shown in FIG. 3). , and is provided with a plunger-type electromagnet 12 that drives the contact mechanism 13 on and off and is used as an operating electromagnet.

As shown in FIG. 3, the plunger-type electromagnet 12 includes a spool 14, a plunger 15, an outer yoke 16, an exciting coil 21, a first armature 24, and a first armature 24. 2 It is equipped with an armature (25). The spool 14 has a cylindrical portion 17, and a front flange portion 19 and a rear flange portion 20 that protrude in the radial direction from both axial ends of the cylindrical portion 17, respectively. An excitation coil 21 is wound and mounted on the outer periphery of the cylindrical portion 17 of the spool 14. Additionally, a coil terminal 22 for supplying electricity to the exciting coil 21 is mounted on the front flange portion 19 of the spool 14.

In addition, the plunger 15 is a cylindrical rod-shaped body inserted into the cylindrical portion 17 of the spool 14, and protrudes in the radial direction at both axial ends of the plunger 15 as shown in FIG. 4. The first armature 24 and the second armature 25 are connected.

And, a connecting spring 18 is fixed to the central part of the first armature 24. This connection spring 18 is formed of a long metal plate, has a fixed plate portion 18a fixed to the first armature 24, and an inclined surface spaced apart from the fixed plate portion 18a to the first armature 24. It is composed of a pair of elastic engaging plate parts 18b and 18c that rise in the direction and have a curved portion on the distal end side.

As shown in FIG. 3, the contact mechanism 13 includes a plurality of power supply side fixed contacts 26a and load side fixed contacts 26b fixed to the second frame 11B and arranged side by side in the left and right directions, and the second frame 11B. A contact support portion 28 mounted to be movable in the front and rear directions inside 11B, a fixed contact 26a1 of a plurality of power supply side fixed contactors 26a supported on the contact support portion 28, and a plurality of sets of load side fixed contacts. The fixed contact point 26b1 at (26b) is provided with a plurality of movable contacts 27 that move in the front-back direction so that the movable contact points 27a and 27b can be contacted.

The contact support portion 28 is a member exclusively for plunger-type electromagnets. As shown in FIG. 5, the contact support portion 28 is integrated with a plurality of movable contact support portions 29 that movably align and hold the plurality of movable contactors 27 in the front-back direction, and these movable contact support portions 29. It is formed and consists of a pair of connection parts (30, 31) to which a plunger-type electromagnet (12) is connected.

As shown in FIG. 5, the pair of connecting portions 30 and 31 are formed spaced apart in the direction in which the plurality of movable contact support portions 29 are aligned, and have a slit shape extending linearly on the opposing inner walls. Connection insertion portions 32a and 32b are formed.

And, as shown in FIG. 3, the elastic engaging plate portions 18b and 18c of the connecting spring 18 fixed to the first armature 24 of the plunger electromagnet 12 are connected to the contact support portion 28. By engaging the insertion portions 32a and 32b in an elastically deformed state, the plunger-type electromagnet 12 and the contact support portion 28 are integrally connected.

Here, FIG. 6 shows the structure of the second frame 11B with the contact support portion 28 disposed therein. The rectangular cylinder portion 52 of the second frame 11B on the side where the power supply side terminal portion 53a and the auxiliary terminal portion 54a are formed is open, and step portions 34 and 35 are formed at both edges of the opening. .

Figure 7 is an enlarged view of the circle indicated by symbol A in Figure 3, but the step portions 34 and 35 formed in the second frame 11B are the front flange portion ( 19), they are arranged overlapping with dimension L in the anteroposterior direction. Moreover, this dimension L is small with respect to the contact gap G of the fixed contact 26a1 and the movable contact 27a (contact gap G of the fixed contact 26b1 and the movable contact 27b) shown in FIG. It is set as a dimension (L<G).

8 shows the electromagnetic contactor 10 from above, but the step portions 34 and 35 are overlapped from the inside with the first frame 11A constituting the housing with the second frame 11B. It is placed and has a function of preventing dust from entering the interior of the electromagnetic contactor 10 from above.

Next, the assembly procedure of the electromagnetic contactor 10 of the first embodiment is explained with reference to FIGS. 1, 3, 9, and 10.

First, the electromagnetic contactor 10 is assembled with the contact mechanism 13 formed. That is, a contact mechanism 13 in which a plurality of power supply side fixed contactors 26a, a load side fixed contactor 26b, a plurality of movable contactors 27, and a contact support portion 28 are inserted inside the second frame 11B. use.

Subsequently, as shown in FIG. 9, the second frame 11B is moved upward with respect to the contact support portion 28, and the fixed contact point 26a1 and the movable contact point 27a (fixed contact point ( 26b1) and the movable contact point 27b) are brought into contact to maintain the contact gap G. In addition, the present invention refers to a state in which a contact gap G exists between the fixed contact 26a1 and the movable contact 27a (the fixed contact 26b1 and the movable contact 27b) of the contact mechanism 13. Corresponding to the first assembly step described, the state shown in FIG. 9 corresponds to the interference prevention step described in the present invention.

Subsequently, as shown in FIG. 10, the openings of the connection insertion portions 32a and 32b provided on the contact support portion 28 of the contact mechanism 13 are opposed to the connection spring 18 on the first armature 24. I order it. Then, the contact mechanism 13 is slidably moved above the plunger electromagnet 12 in a direction perpendicular to the connection direction of the contact mechanism 13 and the plunger electromagnet 12. At that time, since the fixed contact point 26a1 and the movable contact point 27a (the fixed contact point 26b1 and the movable contact point 27b) of the contact mechanism 13 are maintained without the contact gap G, the second Since the step portions 34 and 35 formed in the frame 11B are located at the upper part of Fig. 10 with respect to the front flange portion 19 of the plunger-type electromagnet 12, the contact mechanism 13 is located at the front flange portion ( 19) The slide moves without interference. As a result, the pair of elastic engaging plate portions 18b and 18c of the connecting spring 18 engage with the inside of the connecting insertion portions 32a and 32b. Additionally, the state shown in FIG. 10 corresponds to the second assembly step described in the present invention.

Subsequently, as shown in FIG. 11, the contact mechanism 13 is further slid to the left to connect the pair of elastic engaging plate portions 18b and 18c of the connecting spring 18 to the connecting insertion portions 32a and 32b. ) Complete the matching. At this time, since the step portions 34 and 35 of the second frame 11B are moved to a position where they do not interfere with the front flange portion 19, the second frame 11B is moved toward the plunger-type electromagnet 12. . By performing the operation of this second frame 11B, a contact gap ( G) is installed as the contact mechanism 13, and the contact support portion 28 of the contact mechanism 13 and the plunger-type electromagnet 12 are connected. And, the step portions 34 and 35 of the second frame 11B are arranged to overlap in the front-back direction with respect to the front flange portion 19 of the plunger-type electromagnet 12. Additionally, the state shown in Fig. 11 corresponds to the release step described in the present invention.

Then, assembly of the electromagnetic contactor 10 shown in FIG. 1 is completed by connecting the first frame 11A containing the plunger-type electromagnet 12 to the second frame 11B of the contact mechanism 13. Additionally, the operation of connecting the first frame 11A to the second frame 11B of the contact mechanism 13 corresponds to the third assembly step described in the present invention.

Next, the electromagnetic contactor 60 of the second embodiment according to the present invention is described with reference to FIGS. 12 to 14.

FIG. 12 shows the internal structure of the electromagnetic contactor 60 of the second embodiment, and the contact mechanism 62 built into the second frame 61B is connected to the second frame 61B in the front-back direction. It is built into a first frame (not shown) and is provided with a leg-type electromagnet 63 that drives the contact mechanism 62 on and off and is used as an operating electromagnet.

The leg-type electromagnet 63 includes a fixed iron core 64, a movable iron core 65 whose contact surface 65a is disposed opposite to the contact surface 64a of the fixed iron core 64, and a fixed iron core 64. It is provided with an electromagnetic coil 66 wound around the central protrusion and a return spring 67. The movable iron core 65 is formed with a through hole 65b penetrating in the left-right direction (thickness direction) in FIG. 12 .

The contact mechanism 62 includes a plurality of power supply side fixed contacts 68a and load side fixed contacts 68b fixed to the second frame 61B and arranged side by side in the left and right directions, and located inside the second frame 61B in the front-back direction. A contact support portion 69 dedicated to a leg-type electromagnet movably mounted, a fixed contact point 68a1 of a plurality of sets of power-side fixed contactors 68a supported by the contact support part 69, and a plurality of sets of load-side fixed contactors 68b. The fixed contact point 68b1 is provided with a plurality of movable contacts 70 that move in the front-back direction so that the movable contact points 70a and 70b can be opened and closed.

The contact support portion 69 dedicated to the leg-type electromagnet includes a plurality of movable contact support portions 71 that movably align and hold a plurality of movable contactors 27 in the front-back direction, as shown in FIG. 13, and these movable contact support portions. It is formed integrally with (71) and has a pair of opposing connecting portions (72, 73) to which leg-shaped electromagnets (63) are connected. A movable iron core contact surface 74 is formed between the pair of connecting portions 72 and 73, and a slit-shaped connection extends linearly on the opposing inner wall of the pair of connecting portions 72 and 73. Insertion portions 75a and 75b are formed. This contact support portion 69 dedicated to the leg-type electromagnet is mounted inside the second frame 61B, similar to the contact support portion 28 dedicated to the plunger-type electromagnet shown in the first embodiment, and the contact support portion 69 The fixed contact point 68a1 and the fixed contact point 68b1 of the plurality of power supply side fixed contactors 68a and the load side fixed contactor 68b fixed to the second frame 61B are supported by the movement of the contact support portion 69. The movable contact points 70a and 70b of the multiple movable contactors 70 are in contact with each other.

And, as shown in FIG. 14, the leg-type electromagnet 63 brings the upper surface 65b of the movable iron core 65 into contact with the movable core abutting surface 74 of the contact support portion 69, and is movable. The distal end of the connecting spring 76 inserted into the through hole 65b of the iron core 65 is inserted into the connecting insertion portions 75a and 75b, and the movable iron core 65 is moved by the elastic force of the connecting spring 76. It is pressed against the contact surface 74. Thereby, it becomes possible to configure the electromagnetic contactor 60 of the second embodiment by integrally connecting the leg-type electromagnet 63 to the contact support portion 69.

Next, the assembly procedure of the electromagnetic contactor 60 of the second embodiment will be described.

First, a plurality of power supply side fixed contactors 68a, load side fixed contactors 68b, and contact support portions 69 are inserted into the second frame 61B, that is, a contact mechanism 62 dedicated to the leg type electromagnet is installed. form

Subsequently, the fixed contact point 68a1 and the fixed contact point 68b1 of the contact mechanism 62 are brought into contact with the movable contact points 70a and 70b of the movable contactor 70 supported on the contact support portion 69, so that there is no contact gap. The second frame 61B is moved relative to the contact support portion 69 (corresponding to the first assembly step described in the present invention) so as to achieve this state.

Subsequently, the openings of the connection insertion portions 75a and 75b provided on the contact support portion 69 are opposed to the connection spring 76 inserted into the through hole 65b of the movable iron core 65, and a leg-type electromagnet is formed. The contact mechanism 62 is slidably moved relative to the leg-shaped electromagnet 63 in a direction perpendicular to the connection direction of 63 (corresponding to the second assembly step described in the present invention).

Subsequently, the contact mechanism 62 is further slid to complete engagement of the tip portion of the connection spring 76 with the connection insertion portions 75a and 75b.

Then, the first frame (not shown) is connected to the second frame 61B to incorporate the leg-type electromagnet 63 (corresponding to the third assembly step described in the present invention), thereby forming the electromagnetic contactor of the second embodiment. Assembly of (60) is completed.

Next, about the electromagnetic contactor 10 using the plunger-type electromagnet 12 shown in the first embodiment as the operating electromagnet, and the electromagnetic contactor 60 using the leg-type electromagnet 63 shown in the second embodiment as the operating electromagnet. Explain the effect.

In the method of assembling the electromagnetic contactor 10 using the plunger-type electromagnet 12 as the operating electromagnet, first, as shown in FIG. 9, a contact support portion 28 dedicated to the plunger-type electromagnet is installed inside the second frame 11B. By inserting, a unit for a plunger-type electromagnet is formed. In addition, in the method of assembling the electromagnetic contactor 60 using the leg-type electromagnet 63 as the operating electromagnet, first, the contact support portion 69 dedicated to the leg-type electromagnet is inserted into the second frame 61B to form the leg-type electromagnet. It forms a unit for electromagnets. And in the assembly line of the electromagnetic contactor 10, as the first assembly process, the connection insertion parts 32a and 32b of the plunger type electromagnet unit are connected to the connection spring 18 of the plunger type electromagnet 12 ( 11). In addition, in the assembly line of the electromagnetic contactor 60, as the first assembly process, the connection insertion portions 75a and 75b of the leg-type electromagnet unit are engaged with the movable iron core 65 of the leg-type electromagnet 63. It is connected to the connecting spring (76).

In this way, when manufacturing an electromagnetic contactor using one of the plunger-type electromagnet 12 and the leg-type electromagnet 63 as the operating electromagnet, the plunger-type electromagnet is inserted into the connection insertion portions 32a and 32b of the plunger-type electromagnet unit. The process of connecting the connecting spring 18 of (12) is the first assembly process, or the connecting spring 76 of the leg-type electromagnet 63 is connected to the connecting insertion portions 75a and 75b of the leg-type electromagnet unit. Since the connecting process can be common as the first assembly process, when using the plunger-type electromagnet 12 and the leg-type electromagnet 63 as the operating electromagnet, a series of processes for the electromagnetic contactor were conventionally performed on different assembly lines. Compared to the assembly line of the electromagnetic contactor, it can be made into a short assembly line with a reduced number of assembly steps. In addition, by using a short assembly line, investment in assembly equipment can be reduced, and manufacturing costs can be reduced when manufacturing an electromagnetic contactor using one of the plunger-type electromagnets 12 and the leg-type electromagnets 63.

In addition, when connecting one side of the plunger type electromagnet unit and the leg type electromagnet unit to one side of the plunger type electromagnet 12 and the leg type electromagnet 63, the connection insertion portions 32a and 32b of the plunger type electromagnet unit , and sliding one side of the connection insertion portions 75a, 75b of the leg-type electromagnet unit toward one side of the connection spring 18 of the plunger-type electromagnet 12 and the connection spring 76 of the leg-type electromagnet 63. Since it is only moved, assembly of the electromagnetic contactor can be simplified.

In addition, in the electromagnetic contactor 10 using the plunger-type electromagnet 12 as the operating electromagnet, as shown in FIG. 8, the step portions 34 and 35 of the second frame 11B are inside the first frame 11A. Since the upper walls of the first frame 11A and the second frame 11B of the electromagnetic contactor 10 do not have an internal space, dust is drawn from the top of the electromagnetic contactor 10. It can prevent intrusion inside. In addition, the electromagnetic contactor 60 using the leg-type electromagnet 63 as the operating electromagnet is not described in detail, but the step portions 34 and 35 provided on the second frame 11B are connected to the first frame 11A. By being disposed in an overlapping state from the inside, it is possible to prevent dust from entering the interior of the electromagnetic contactor 10 from above.

10: electromagnetic contactor, 11A: first frame (lower frame), 11B: second frame (upper frame), 12: plunger type electronic, 13: contact mechanism, 14: spool, 15: plunger, 16: outer yoke, 17 : Cylindrical part, 18: Connecting spring, 18a: Fixing plate part, 18b, 18c: A pair of elastic engaging plate parts, 19: Front flange part (flange part), 20: Rear flange part, 21: Excitation coil, 22: Coil terminal , 24: first armature, 25: second armature, 26a: power side fixed contact, 26a1: fixed contact, 26b: load side fixed contact, 26b1: fixed contact, 28: contact support (for plunger type electromagnet), 27: movable contact. , 27a, 27b: movable contact point, 29: movable contact support part, 30, 31: connection part, 32a, 32b: connection insertion part, 34, 35: step part, 50: rectangular cylinder-shaped part with bottom, 51: attachment plate part, 52 : Leg tube part, 53a: Power side terminal part, 53b: Load side terminal part, 54a: Auxiliary terminal part, 54b: Auxiliary terminal part, 60: Magnetic contactor, 61B: Second frame (upper frame), 62: Contact mechanism, 63: Leg type electromagnet, 64: fixed iron core, 64a: contact surface, 65: movable iron core, 65a: contact surface, 65b: through hole, 65c: upper surface of iron core, 66: electromagnetic coil, 67: return spring, 68a: power side fixed contactor, 68b: load side fixed Contactor, 69: Contact support (for leg-type electromagnet), 68a1: Fixed contact, 68b1: Fixed contact, 70a, 70b: Movable contact, 70: Movable contactor, 71: Movable contact support, 72, 73: Connection, 74: Movable. Iron core contact surface, 75a, 75b: connection insertion part, 76: connection spring, G: contact gap

Claims (9)

A lower frame and an upper frame constituting an upper and lower split housing,
A contact mechanism is disposed inside the upper frame and includes a movable contactor having a pair of movable contact points, a pair of fixed contactors having a fixed contact point that can be contacted with the pair of movable contact points, and a contact support part for supporting the movable contact point. and,
An electromagnet for operation that is disposed inside the lower frame and drives the contact mechanism on and off through the contact support part.
Equipped with
In an electromagnetic contactor wherein the contact support portion and the electromagnet are connected by sliding in a direction intersecting the driving direction of the electromagnet,
An electromagnetic contactor, characterized in that the contact support and the electromagnet are connected by sliding and moving the contact support in a state in which the contact support is integrally inserted into the upper frame. According to paragraph 1,
The contact support portion has a connection insertion portion that opens at one end in a direction intersecting the connection direction with the electromagnet and extends in the intersecting direction,
The electromagnet has a connecting spring connected to the contact mechanism,
An electromagnetic contactor, wherein the contact support portion and the electromagnet are connected by sliding the connection insertion portion of the contact support portion toward the connection spring of the electromagnet. According to claim 1 or 2,
The electromagnet has a cylindrical portion on which an excitation coil is wound and a spool having a flange portion protruding outward from an end of the cylindrical portion and toward the contact mechanism, and the upper frame has the movable contact on the electromagnet side. An electromagnetic contactor comprising a step portion that protrudes with a dimension smaller than the contact gap of the fixed contact point, and wherein when the contact gap is opened, the flange portion protruding toward the contact mechanism and the wall surfaces of the step portion face each other. According to any one of claims 1 to 3,
An electromagnetic contactor, wherein the upper frame and the contact support part of the contact mechanism are maintained so that there is no contact gap, and the contact support part is slidably moved toward the electromagnet. The method according to any one of claims 2 to 4, wherein the electromagnet is a plunger-type electromagnet having a plunger that moves up and down and an armature protruding outward from an end of the plunger, and the connecting spring is installed in the armature. An electromagnetic contactor characterized in that there is. According to any one of claims 2 to 4,
The electromagnet is a leg-type electromagnet having a movable iron core that moves up and down, and the connecting spring is installed on the movable iron core. A method of assembling an electromagnetic contactor according to any one of claims 1 to 6, comprising:
A first assembly step of integrally fitting the upper frame and the contact support portion of the contact mechanism;
a second assembly step of sliding and inserting the contact support held together with the upper frame into the electromagnet;
A third assembly step of forming the housing by engaging the upper edge of the lower frame with the lower edge of the upper frame.
A method of assembling an electromagnetic contactor comprising: In clause 7,
Between the first assembling step and the second assembling step, an interference prevention step is provided in which the contact support held with the upper frame is moved relative to the fixed contact point and the movable contact point so that the contact gap disappears. do,
Between the second assembly step and the third assembly step, when the connection between the contact support and the electromagnet is completed, the upper frame is formed so that a predetermined contact gap is provided between the fixed contact and the movable contact. A method of assembling an electromagnetic contactor, characterized in that a release step for moving to the electromagnet is provided. According to paragraph 7 or 8,
An assembly line including a magnetic contactor using a plunger-type electromagnet as an operating electromagnet and a magnetic contactor using a leg-type electromagnet as an operating electromagnet, wherein the first assembly step is common. Assembly method.

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