JPH08628U - Electromagnetic relay - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To extend the life of a device by preventing the influence of one contact part or the contact plate even if the contact or the contact plate is damaged due to welding or the like from affecting the other contact parts or electromagnets. Provide an electromagnetic relay capable of SOLUTION: A pair of fixed contact plates 9 and a movable contact plate 1
One contact portion is formed from 0, but when a plurality of such contact portions are arranged in the base 7, the base 7 is divided into a plurality of contact chambers, and one contact portion is provided in each contact chamber.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to an electromagnetic relay having a plurality of contact parts, and more particularly to an electromagnetic relay in which even if one contact part is damaged by welding or the like, other contact parts are not affected.

[0002]

[Prior art]

 As a conventional device of this type, for example, one described in U.S. Pat. No. 4,020,434 is known, and a movable contact plate is arranged between a pair of fixed contact plates to form one contact portion. A plurality of such contact portions are provided on the base in the case.

[0003]

[Problems to be Solved by the Invention]

 However, in the conventional device as described above, when forming a plurality of contact portions, a plurality of contact portions are provided directly on the base in the case.

Therefore, if the contact or the contact plate is damaged by welding or the like at one contact portion, the effect also extends to the other contact portions or electromagnets, which shortens the life of the device.

The present invention has been made in view of the conventional problems as described above, and an object thereof is to have an effect even if a contact or a contact plate is damaged by welding or the like at one contact portion. It is to provide an electromagnetic relay that can extend the life of the device by not reaching other contact parts or electromagnets.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the invention of claim 1 provides a pair of fixed contact plates and a movable contact plate arranged between the fixed contact plates in a non-conductive box-shaped base whose periphery is covered with a case. The movable contact plates are locked to one card and the contacts of each contact part are switched by the reciprocating motion of the card, and each contact part is formed by implanting a plurality of contact parts that are insulated from each other. In an electromagnetic relay in which a switch is simultaneously switched by one card by the displacement of the armature caused by the excitation or demagnetization of the coil, the contact parts are housed in a plurality of contact chambers formed by partitioning the box base. It is characterized by being

A second aspect of the present invention is the device according to the first aspect, wherein the contact chamber is in a direction perpendicular to a direction in which each contact plate is planted and in a lateral direction of the device body. It is characterized by being formed of a base having an opening on the corresponding side and a wall surface of the case covering the opening of the base.

In this invention, the contact portion is housed in each of a plurality of contact chambers formed by partitioning the inside of the box-shaped base, so that the contact or the contact plate can be welded by one contact portion. Even if it is damaged, the effect does not affect other contact parts or electromagnets.

Further, since the contact chamber is provided in the base having an opening on a side which is perpendicular to the direction in which each contact plate is planted and which corresponds to the side surface direction of the device body, the opening can be formed in the case. You can adjust each contact plate before covering.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION

 Hereinafter, the details of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a plan view showing an electromagnetic relay according to the present invention, and FIG. 2 is a sectional view taken along the line II of FIG.

In FIG. 1, reference numeral 1 denotes a bottom plate of a case 13. On one side of the bottom plate 1, a coil 2 having a coil core wire 2a wound around and attached to an outer circumference of a bobbin is vertically arranged, and the coil 2 The leading end side and the terminal end side of the coil core wire 2a pulled out are connected to the coil terminal 3 planted in the case bottom plate 1.

An armature 5 urged by a hinge spring 4 is attached to the upper side of the coil 2 so as to be in contact with and separated from a magnetic pole surface 2b of the coil. The movable piece 6 is attached so as to move together.

Reference numeral 7 is a base mounted on the other side of the bottom plate 1. The base 7 is formed in a hollow box shape, and fixed bases 9 and a movable contact plate 9 ... The columns of the contact plates 10 ... And the projecting walls 7a ..., 7b.

Further, a plurality of terminals 8 ... Are planted on the bottom surface of the case bottom plate 1 and the base 7, and each of the terminals 8 ... In the base 7, a pair of fixed contact plates 9 and 9 are provided. It is connected to a movable contact plate 10 arranged between the fixed contact plates 9, 9.

Reference numeral 11 denotes a card, and one end of the card 11 is joined to the lower end portion of the movable piece 6 described above. As the movable piece 6 operates, the card 11 moves back and forth horizontally in the box-shaped base 7. The movable contact plate 10 is switched from one fixed contact plate 9 to the other fixed contact plate 9 by switching.

On the other hand, the top plate of the base 9 is provided with a rectangular monitoring window 12 through which the movable contact plate 10 provided on the lower surface side of the base 7 can be confirmed.

A transparent case 13 is attached to the outer periphery of the bottom plate 1 to cover the relay body.

In the example shown in FIG. 1, four monitoring windows 12 are provided, and four contact portions and four contact chambers according to the present invention are provided.

Further, FIG. 2 shows a cross-sectional view of two of these contact portions and a contact chamber. Each contact chamber has an opening on the side wall side of the case 7, and the opening is made in the case 7. Each contact plate can be adjusted from this opening before the part is covered, and after the opening is covered with the case 7, each contact chamber becomes a contact chamber independent from other contact chambers. Even if one of the contact points or the contact plate is damaged due to welding or the like at the one contact point, the influence can be prevented from affecting the other contact points or the electromagnetic stone 2.

Since the present invention is configured as described above, when the electromagnetic relay is energized, the armature 5 is attracted to the magnetic pole surface 2b of the excited coil 2 and the displacement of the armature 5 is caused. By the movement of the movable piece 6 accompanying the movement of the card 11, the card 11 moves in the horizontal direction in the base 7, and the horizontal movement of the card 11 causes the movable contact plate 10 to be separated from one fixed contact plate 9 and The fixed contact plate 9 is pressed.

When the coil 2 is de-energized, the magnetic pole surface 2b is demagnetized, the armature 5 is separated from the magnetic pole surface 2b by the hinge spring 4, and the movement of the movable piece 6 causes the armature 5 to move. Moves horizontally to the original state, so that the movable contact plate 10 pressed by the other fixed contact plate 9 is returned to one fixed contact plate 9 and the switch switching operation is performed. Such contact operation can be visually confirmed through a monitoring window 12 opened on the top plate of the box-shaped base 7 that covers the fixed contact plate 9 ... And the movable contact plate 10.

As described above, according to the electromagnetic relay according to the present invention, it is possible to easily confirm the contact position associated with the displacement of the movable contact plate by the monitoring window provided on the base top plate, and thus the electronic device. Even if a malfunction occurs in the, the contact that is the cause of the malfunction can be found through the monitoring window, and the repair work can be performed quickly and easily.

Further, since it is possible to visually check the degree of wear and damage of each contact point, it is possible to easily perform a periodic inspection and the like, which is also advantageous in terms of equipment safety management.

[0025]

【The invention's effect】

 As described above, according to the present invention, the contact portion is housed in each of a plurality of contact chambers formed by partitioning the inside of the box-shaped base. Therefore, the contact portion or the contact plate is welded by one contact portion. Even if it is damaged by, the influence can be prevented from affecting other contact parts and electromagnets, and the life of the device can be extended.

Further, since the contact chamber is provided in the base having an opening on a side which is perpendicular to the direction in which each contact plate is planted and which corresponds to the lateral direction of the device body, the opening can be formed in the case. Each contact plate can be adjusted before covering, improving the assembly workability of this type of device.

[Brief description of drawings]

FIG. 1 is a plan view showing the present invention.

FIG. 2 is a sectional view taken along line I-I of FIG.

[Explanation of symbols]

 1 Bottom plate 2 Coil 9 Fixed contact plate 10 Moving contact plate 12 Monitoring window

Claims (2)

[Scope of utility model registration request] 1. A pair of fixed contact plates and a movable contact plate disposed between them are planted in a non-conductive box-shaped base whose periphery is covered with a case to form a plurality of contact parts insulated from each other. At the same time, each movable contact plate is locked to one card and the contact of each contact part is switched by the reciprocating motion of the card, and each contact part is simultaneously displaced in one card by the displacement of the amateur due to the excitation or demagnetization of the coil. In the switched electromagnetic relay, the contact portion is housed in each of a plurality of contact chambers formed by partitioning the inside of the box-shaped base. 2. The contact chamber covers a base having an opening on a side which is perpendicular to a direction in which each contact plate is planted and which corresponds to a lateral direction of a device body, and the opening of the base. The electromagnetic relay according to claim 1, wherein the electromagnetic relay is formed from a wall surface of the case.