JP4683040B2 - Electromagnetic relay - Google Patents

Description

  The present invention relates to an electromagnetic relay suitable for application to a power meter relay.

Conventionally, a power meter relay rated at a high capacity of about 60 A has been configured by arranging two electromagnetic relays side by side in the in-plane direction of the mounting substrate.
Japanese Patent Laid-Open No. 2001-143594

  In a conventional electromagnetic relay, since a screw mounting surface for mounting a movable terminal and a fixed terminal to a controlled object such as a power meter is positioned in a direction perpendicular to the mounting substrate, for example, two electromagnetic relays as shown in FIG. When 10a and 10b are arranged side by side in the in-plane direction of the mounting substrate, it is difficult to attach screws to the movable terminal 11 and the fixed terminal 12 located inside. In order to solve such a problem, a method of separating the electromagnetic relays 10a and 10b so that the screw can be easily attached can be considered. However, when this method is used, the entire relay for the power meter is considered. The size increases.

  On the other hand, in order to suppress the temperature rise of the movable terminal and the fixed terminal due to energization, it is desirable to increase the terminal cross-sectional area (plate thickness) as much as possible. However, the conventional electromagnetic relay is configured to regulate the lengths of the movable terminal 11 and the fixed terminal 12 in the longitudinal direction by bending as shown in FIG. For this reason, when the cross-sectional area of the terminal is increased, the bending height of the terminal inevitably increases. Therefore, it is difficult to increase the cross-sectional area of the terminal in order to reduce the size of the electromagnetic relay.

  The present invention has been made to solve the above-described problems, and its object is to facilitate the mounting work of the fixed terminal and the movable terminal to the controlled object without increasing the size and to fix the terminal with energization. And it is providing the electromagnetic relay which can suppress the temperature rise of a movable terminal.

  An electromagnetic relay according to the present invention is an electromagnetic relay that contacts and separates a fixed terminal and a movable terminal that are arranged to face each other by displacing the movable terminal relative to the fixed terminal by switching the direction of the current flowing through the coil. The auxiliary member includes an auxiliary member that is caulked and joined to the upper end of each of the fixed terminal and the movable terminal, and the auxiliary member has a substantially L shape including a vertical surface joined to the terminal and a horizontal plane parallel to the mounting substrate. A screw mounting hole for joining the terminal to the controlled object is formed on the horizontal plane.

  According to the electromagnetic relay according to the present invention, since the screw mounting surface is positioned parallel to the mounting substrate, it is easy to mount the fixed terminal and the movable terminal to the controlled object without increasing the size. Can do. Further, according to the electromagnetic relay according to the present invention, since the cross-sectional area of the terminal around the screw mounting portion can be increased, the temperature rise of the fixed terminal and the movable terminal accompanying energization can be suppressed.

  Hereinafter, the electromagnetic relay which becomes embodiment of this invention is demonstrated.

  As shown in FIG. 1, the electromagnetic relay 1 according to the embodiment of the present invention is disposed to face the fixed terminal 3 by displacing the movable terminal 4 by switching the direction of the current flowing through the coil 2. The fixed terminal 3 and the movable terminal 4 are contacted and separated. The internal configuration of the electromagnetic relay 1 and its operating principle are known at the time of filing of the present invention, and will not be described below. A substantially L-shaped auxiliary member 5 composed of a horizontal surface 5a and a vertical surface 5b is attached to the upper ends of the fixed terminal 3 and the movable terminal 4 by caulking and welding. A screw attachment hole 5c for attaching the fixed terminal 3 and the movable terminal 4 to an object to be controlled such as a power meter terminal is formed in the horizontal plane of the auxiliary member 5. Dummy terminals 5 d for attaching the electromagnetic relay 1 to the mounting substrate are formed at the lower ends of the fixed terminal 3 and the movable terminal 4.

  According to such a configuration of the electromagnetic relay 1, the screw attachment hole 5c for attaching the fixed terminal 3 and the movable terminal 4 to the control object is formed in the vertical direction, in other words, the screw attachment surface is the control object. Therefore, the fixed terminal 3 and the movable terminal 4 can be easily screwed to the controlled object. As a result, when two electromagnetic relays 1 are arranged side by side in the in-plane direction of the mounting board as shown in FIG. 2, it is not necessary to secure a space for screwing work between the electromagnetic relays 1. Can be realized. Furthermore, since the cross-sectional areas of the fixed terminal 3 and the movable terminal 4 on the periphery of the screw mounting portion can be increased by forming the horizontal surface 5a, the temperature rise of the terminal portion due to energization can be suppressed. In addition, since the fixed terminal 3 and the movable terminal 4 are fixed to the mounting surface in both the screw mounting hole 5c and the dummy terminal 5d, the load applied to the terminal during and after the mounting of the screw is dispersed to improve the reliability of the terminal. Can do.

  In the above embodiment, the horizontal surface 5a of the auxiliary member 5 is arranged at the substantially upper end position in the height direction of the electromagnetic relay 1 as shown in FIG. 1, but by attaching the auxiliary member 5 as shown in FIG. The horizontal surface 5a of the auxiliary member 5 may be arranged in the vicinity of the center position in the height direction of the electromagnetic relay 1 in consideration of the size of the head of the screw attached to the hole 5c. According to such a configuration, the head portion of the screw attached to the screw attachment hole 5c can be accommodated within the height dimension of the electromagnetic relay 1, so that space saving in the height direction of the electromagnetic relay 1 is realized. can do. Also, the dowel and hole positions for caulking are set to the same position on both the fixed terminal 3 and movable terminal 4 sides, and the screw mounting hole 5c of the auxiliary member 5 is shifted from the center position of the horizontal surface 5a as shown in FIG. You may make it form. According to such a configuration, it is possible to cope with a plurality of screw attachment positions by preparing two types of auxiliary members 5.

  As mentioned above, although embodiment which applied the invention made by the present inventors was described, this invention is not limited by description and drawing which make a part of indication of this invention by this embodiment. That is, other embodiments, examples, operational techniques, and the like made by those skilled in the art based on the present embodiment are all included in the scope of the present invention.

It is a perspective view which shows the structure of the electromagnetic relay used as embodiment of this invention. It is a figure which shows the state which arranged two electromagnetic relays shown in FIG. 1 along with the in-plane direction of the mounting substrate. It is a perspective view which shows the structure of the modification of the electromagnetic relay shown in FIG. It is a perspective view which shows the structure of the modification of the electromagnetic relay shown in FIG. It is a figure showing the state where two conventional electromagnetic relays were arranged side by side in the in-plane direction of the mounting substrate. It is the figure which expanded the stationary terminal and movable terminal part of the conventional electromagnetic relay.

Explanation of symbols

1: Electromagnetic relay 2: Coil 3: Fixed terminal 4: Movable terminal 5: Auxiliary member 5a: Horizontal surface 5b: Vertical surface 5c: Screw mounting hole

Claims (4)

In the electromagnetic relay which contacts and separates the fixed terminal and the movable terminal which are arranged to face each other by displacing the movable terminal relative to the fixed terminal by switching the direction of the current flowing in the coil, the fixed terminal and the movable terminal Auxiliary members that are caulked and joined to the respective upper ends are provided, and the auxiliary members have a substantially L-shape consisting of a vertical surface that is joined to the terminals and a horizontal plane that is parallel to the mounting substrate. An electromagnetic relay characterized in that a screw mounting hole is formed for electrically connecting the motor to a control object.
The electromagnetic relay according to claim 1,
The electromagnetic relay, wherein the horizontal plane is located in the vicinity of a central position in the height direction of the electromagnetic relay. In the electromagnetic relay according to claim 1 or 2,
The positions of the dowel and the hole for caulking and joining the auxiliary member to the terminal are at the same position on the fixed terminal side and the movable terminal side, and the screw mounting hole is formed to be shifted from the center position of the horizontal plane. An electromagnetic relay characterized by that. The electromagnetic relay according to any one of claims 1 to 3,
An electromagnetic relay, wherein a dummy terminal for passing through a mounting board is formed at a lower end portion of the fixed terminal and the movable terminal.

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