JP2008159522A - Electromagnetic contactor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To downsize an electromagnetic contactor. <P>SOLUTION: This electromagnetic contactor is provided with a drive part 1, fixed contacts 21-23, and moving contacts 31-33. The drive part 1 has a moving member 11. The moving member 11 can move in a path L along a direction 91 both in the direction 91 and a direction opposite to it. The fixed contacts 21-23 are arranged on a direction 92 side vertical to the direction 91 with respect to the drive part 1. The moving contacts 31-33 are arranged along the direction 91 with respect to the fixed contacts 21-23, and separate from and contact to the fixed contacts 21-23, respectively, by movement of the moving member 11. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an electromagnetic contactor.

  The electromagnetic contactor includes a fixed contact, a movable contact that is attached to and detached from the fixed contact, and a drive unit. The drive unit includes a movable unit that brings the movable contact into contact with the fixed contact.

  In addition, the technique relevant to this invention is shown below.

JP 2000-100305 A JP-A-11-297177

  In the conventional electromagnetic contactor, the fixed contact and the movable contact, and the drive unit are arranged along the direction in which the movable unit moves. For this reason, the magnetic contactor was enlarged in the said direction.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to reduce the size of an electromagnetic contactor.

  The electromagnetic contactor according to claim 1 of the present invention is a movable element (11) capable of moving along a predetermined path (L) along the first direction (91) in both the first direction and the opposite direction. ), A fixed contact (21-23) provided on the second direction (92) side perpendicular to the first direction with respect to the drive unit, and the fixed contact Movable contacts (31 to 33) arranged along the first direction and attached to and detached from the fixed contacts by movement of the mover.

  An electromagnetic contactor according to a second aspect of the present invention is the electromagnetic contactor according to the first aspect, wherein the fixed contacts (21 to 23) are arranged along the first direction (91) or the first contact point. A plurality of the movable contacts (31 to 33) are in contact with each of the fixed contacts, and a plurality of the movable contacts (31 to 33) are arranged along a third direction (93) perpendicular to both the first and second directions (92). A plurality are provided.

  An electromagnetic contactor according to a third aspect of the present invention is the electromagnetic contactor according to the first or second aspect, wherein the electromagnetic contactor is linked to the movable element (11) and extends along the first direction (91). The movable contact (31-33) is provided on the member.

  According to the electromagnetic contactor according to claim 1 of the present invention, the electromagnetic contactor can be reduced in size in the first direction.

  According to the electromagnetic contactor according to claim 2 of the present invention, when the fixed contacts are arranged along the third direction, the electromagnetic contactor is enlarged in the second direction even if a plurality of fixed contacts are provided. do not do. Further, when the fixed contacts are arranged along the first direction, the electromagnetic contactor does not increase in size in either the second direction or the third direction even if a plurality of fixed contacts are provided.

  According to the electromagnetic contactor according to claim 3 of the present invention, the translational movement of the mover can be transmitted to the movable contact through the member.

  FIG. 1 conceptually shows an electromagnetic contactor according to an embodiment of the present invention. The electromagnetic contactor includes a drive unit 1, fixed contacts 21 to 23, and movable contacts 31 to 33. In FIG. 1, the drive unit 1, the fixed contacts 21 to 23, and the movable contacts 31 to 33 are stored in the housing 6.

  The drive unit 1 includes a mover 11, a magnet 12, and a shaft 13. The axis 13 is along a certain direction 91. The magnet 12 is provided with its magnetic pole surface 12a facing the mover 11 side.

  The mover 11 has a winding wound around the shaft 13 in a state of being movable with respect to the shaft 13. That is, the winding is movable along the path L along the shaft 13 in either the direction 91 or the opposite direction. Therefore, the mover 11 having the winding can be moved similarly.

  When the winding of the movable element 11 is wound clockwise from the high voltage side as viewed from the direction 91 side, a current is passed through the winding to cause the direction 91 of the winding. An S pole is generated on the same side as N and an N pole is generated on the opposite side.

  Therefore, when the winding is wound clockwise as described above and the magnetic pole surface 12a exhibits the N pole (aspect 1), the mover 11 moves toward the direction 91 by passing a current through the winding. And move. On the other hand, when the winding is wound clockwise and the magnetic pole surface 12a has the south pole (aspect 2), the mover 11 moves to the opposite side of the direction 91 by passing a current through the winding. And move.

  When the winding included in the mover 11 is wound counterclockwise starting from the high voltage side when viewed from the direction 91 side, the direction of the winding is obtained by passing a current through the winding. N pole is generated on the same side as 91, and S pole is generated on the opposite side.

  Therefore, as described above, when the winding is wound counterclockwise and the magnetic pole surface 12a has the N pole (mode 3), by passing a current through the winding, the mover 11 is moved in the direction 91. Moves to the other side. On the other hand, when the winding is wound counterclockwise and the magnetic pole surface 12a exhibits the south pole (mode 4), the mover 11 moves to the direction 91 side by passing a current through the winding. To do.

  In FIG. 1, the member 4 is fixed to the mover 11, and the compression spring 5 is connected to the end of the member 4 opposite to the direction 91. When the member 4 moves in the direction opposite to the direction 91, the compression spring 5 is compressed, and the member 4 receives a force from the compression spring 5 toward the direction 91. Since the member 4 is fixed to the movable element 11, the force received from the compression spring 5 is transmitted to the movable element 11 through the member 4. That is, when the mover 11 moves to the side opposite to the direction 91, a force toward the direction 91 is applied to the mover 11.

  In this case, the following operation | movement is attained by employ | adopting the said aspect 2 or aspect 3 for the drive part 1. FIG. That is, by supplying a current to the windings of the mover 11, the mover 11 moves in the direction opposite to the direction 91. At this time, an electromagnetic force is generated in the mover 11 in the direction opposite to the direction 91. The magnitude of the electromagnetic force is larger than the drag force of the compression spring 11. On the other hand, the movable element 11 is returned to the direction 91 side by the drag of the compression spring 5 by cutting off the current supply to the winding.

  A specific example of the drive unit 1 is a linear motor.

  The fixed contacts 21 to 23 are provided on the direction 92 side perpendicular to the direction 91 with respect to the drive unit 1, and are arranged along the direction 91. For example, the fixed contacts 21 to 23 are respectively connected to terminals 71 to 73 provided on the housing 6 (FIG. 1), and are connected to an external device of the housing 6 such as a motor via the terminals 71 to 73. The

  The movable contacts 31 to 33 are provided in association with the fixed contacts 21 to 23, respectively. Specifically, the movable contact 31 is disposed along the direction 91 with respect to the fixed contact 21. Similarly, the movable contacts 32 and 33 are arranged along the direction 91 with respect to the fixed contacts 22 and 23, respectively.

  All the movable contacts 31 to 33 are detached from the corresponding fixed contacts 21 to 23 by the movement of the movable element 11. Specifically, the movable contacts 31 to 33 are provided on the member 4, and when the movable element 11 moves, the member 4 fixed to the movable element 11 also moves, and the movable contacts 31 to 33 are respectively fixed contacts 21. Take off with ~ 23.

  From this content, it can be understood that the member 4 transmits the translational motion of the movable element 11 to the movable contacts 31 to 33. The member 4 is not limited to the member fixed to the movable element 11 as shown in FIG. 1, but may be any member that can transmit the translational motion of the movable element 11 to the movable contacts 31 to 33.

  Each of the movable contacts 31 to 33 is desirably provided with compression springs 51 to 53 from the side opposite to the fixed contacts 21 to 23. This is because, after each of the movable contacts 31 to 33 comes into contact with the fixed contacts 21 to 23, the movable element 11 further moves in the direction opposite to the direction 91, whereby the compression springs 51 to 53 are compressed and the movable contact 31. This is because ˜33 is pressed against the fixed contacts 21 to 23 by the drag of the compression springs 51 to 53. That is, poor contact between the fixed contacts 21 to 23 and the movable contacts 31 to 33 can be avoided.

  According to the electromagnetic contactor described above, the length of the electromagnetic contactor in the direction 91 can be reduced. Thus, the magnetic contactor is miniaturized in direction 91.

  In addition, since the fixed contacts 21 to 23 are arranged along the direction 91, the electromagnetic contactor is not enlarged even in a direction perpendicular to the direction 91.

  2 and 3 conceptually show an electromagnetic contactor in which the fixed contacts 21 to 23 are arranged differently from the above-described electromagnetic contactor. The electromagnetic contactor is configured in the same manner as the above-described electromagnetic contactor except that the arrangement of the fixed contacts 21 to 23 is different. 2 shows a view seen from the same direction as FIG. 1, and FIG. 3 shows a view seen from the direction 92.

  The fixed contacts 21 to 23 are arranged along a direction 93 perpendicular to both the direction 91 and the direction 92. With such an arrangement, the magnetic contactor does not increase in size in direction 92.

  The electromagnetic contactor shown in FIGS. 1 to 3 includes three pairs of fixed contacts 21 to 23 and movable contacts 31 to 33 that are associated with each other. For example, the number of pairs is smaller or larger than three. The pair may be provided.

It is a figure which illustrates the electromagnetic contactor concerning this invention. It is a figure which illustrates the electromagnetic contactor concerning this invention. It is a figure which illustrates the electromagnetic contactor concerning this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Drive part 4 Member 11 Movable element 21-23 Fixed contact 31-33 Moving contact 91,92,93 Direction L path | route

Claims (3)

A drive unit (1) having a movable element (11) capable of moving along a predetermined path (L) along the first direction (91) in both the first direction and the opposite direction;
Fixed contacts (21 to 23) provided on the second direction (92) side perpendicular to the first direction with respect to the driving unit;
An electromagnetic contactor comprising movable contacts (31 to 33) arranged along the first direction with respect to the fixed contact and attached to and detached from the fixed contact by movement of the mover. The fixed contacts (21 to 23) are along the first direction (91) or along a third direction (93) perpendicular to both the first and second directions (92). Are arranged,
The electromagnetic contactor according to claim 1, wherein a plurality of the movable contacts (31 to 33) are provided in contact with each of the fixed contacts. In connection with the mover (11), it has a member (4) that moves along the first direction (91),
The electromagnetic contactor according to claim 1, wherein the movable contact (31 to 33) is provided on the member.

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