KR200456638Y1 - Supporting mechanism of coil terminal for magnetic contactor - Google Patents

Abstract

The present invention is to provide a coil terminal support device that can prevent the occurrence of bending of the coil terminal when the wire and the coil terminal is fastened in the magnetic contactor, the support end provided at the end of the coil terminal in accordance with the present invention; And a support jaw provided on the lower frame of the magnetic contactor to support the support end of the coil terminal. The coil terminal support apparatus of the magnetic contactor is disclosed.

Description

SUPPORTING MECHANISM OF COIL TERMINAL FOR MAGNETIC CONTACTOR}

The present invention relates to a magnetic contactor, and more particularly, to a coil terminal support apparatus of a magnetic contactor.

A magnetic contactor is an electric device mainly used as a switch for supplying or disconnecting power for driving / stopping control of an electric motor. As is well known for this function, the magnetic contactor is attracted to the fixed core, the excitation coil device for magnetizing the fixed core, and the fixed core is attracted to the fixed core side when the fixed core is excited, and fixed by the elastic force of the return spring when the fixed core is demagnetized. And a movable contact movable away from the core, a crossbar connected to the movable core and supporting the movable contact, and a fixed contact electrically connected to the power supply side and the load side (motor side).

The excitation coil device for exciting the fixed core is divided into a bobbin, a coil wound around the bobbin, and a control line for transmitting an external signal for on / off control of the magnetic contactor. It comprises a terminal coil and an excitation coil terminal provided with a coil connection portion is wound one end of the coil.

With reference to FIGS. 1 to 3 attached to the configuration and operation of the excitation coil device of such a general magnetic contactor and magnetic contactor will be described briefly.

Figure 1 is a perspective view showing the appearance of a general magnetic contactor, Figure 2 is a perspective view showing an example of an excitation coil device of a magnetic contactor according to the prior art, Figure 3 is a connection support member and a drive screw of the terminal portion in FIG. An exploded perspective view showing the configuration of a coil terminal separately.

As can be seen in Figure 1, the general magnetic contactor 10 is largely divided to include a lower frame (10a) and the upper frame (10b). Reference numeral 500a designates a terminal cover and 500b designates a dust cover, which will be described later with reference to FIG. 2. In the magnetic contactor 10 shown in Fig. 1, reference numeral 10a1 designates a wire entrance to allow the control line to enter and exit. In FIG. 1, a part of the connection support member 100 is shown in the excitation coil device according to the related art, which will be described later with reference to FIG. 2, inside the wire entrance 10a1.

In the excitation coil device, the connection support member 100 and the driving screw 300 are screwed as shown in FIG. 3, and the connection supporting member 100 is rotated clockwise by a screw driver to support the connection. When the member 100 rises and rotates counterclockwise, the connection supporting member 100 descends.

As can be seen in Figure 3, the coil terminal 200 has a wide wire connecting portion connected to the control line at both ends in the longitudinal direction, and wound the coil (see reference numeral 400a in Figure 2) in the longitudinal middle portion Coil connecting protrusions are provided to provide a means for performing the same. The coil terminal 200 is installed such that the wire connection part enters the connection support member 100 through the opening of the connection support member 100, and an intermediate portion of the coil terminal 200 may refer to FIG. 2. As it is inserted into the upper terminal guide groove of the bobbin 400 is installed.

In FIG. 2, the dust cover 500b may be integrally formed with the bobbin 400 of the excitation coil device 20 by a mold. As shown in FIG. 1, the dust cover 500b serves to shield foreign matter from entering the power supply side and the load side terminal of the magnetic contactor 10.

In FIG. 2, the terminal cover 500a may be preferably configured separately from the bobbin 400 of the excitation coil device 20 so as to be fitted into the lower frame 10a of FIG. 1.

In FIG. 2, the control wire for the excitation or element of the excitation coil device 20 to be inserted into the connection support member 100 of the excitation coil device 20 is provided with a ring terminal W2a. A wire (W2), a wire (W3) provided with a U-shaped terminal (W3b), and a wire having a thin or thick metal conducting wire (W1b) embedded therein and covered with an electrical insulating material (W1a). The example of W1) is mentioned. In FIG. 2, the code | symbol W3a and W2a designate the covering insulation material of the wire of the wire W3 and the wire W2, respectively.

Since the excitation coil device 20 of the electromagnetic contactor according to the related art as described above is not provided with means for supporting both ends for connecting external wires as the control line in the coil terminal 200, In order to connect the external wire to both ends of the coil terminal 200, when the user turns the screw driver while applying excessive force downward when the driving screw 300 is fastened by the screw driver, the coil terminal 200 is lowered. Bend occurs. Such bending of the coil terminal 200 may cause a connection failure with an external wire, and there is a problem that may cause a shortening of the life of the excitation coil device due to the breakage of the coil terminal.

Accordingly, the present invention is to solve the problems of the prior art, the object of the present invention is to prevent the occurrence of bending of the coil terminal due to excessive downward pressure during the connection operation by screwing the coil terminal and the external wire It is to provide a coil terminal support device of the contactor.

An object of the present invention, in the coil terminal support apparatus of the magnetic contactor,

A support end provided at an end of the coil terminal; And

It can be achieved by providing a coil terminal support device for a magnetic contactor according to the present invention, characterized in that it comprises a; support jaw portion provided in the lower frame of the magnetic contactor to support the support end of the coil terminal.

Coil terminal support apparatus for a magnetic contactor according to the present invention, the support end is provided at the end of the coil terminal; And a supporting jaw provided in the lower frame of the electromagnetic contactor so as to support the supporting end of the coil terminal, so that the coil terminal can be supported by the supporting jaw provided in the lower frame, so as to connect external wires. There is an effect that the bending of the coil terminal by the excessive tightening force can be prevented during screwing.

In the coil terminal support apparatus of the magnetic contactor according to the present invention, the supporting jaw portion is provided in the lower rear wall of the wire entrance to allow the external wire to enter and exit the lower frame of the magnetic contactor, and thus the coil terminal at the portion of the lower frame. To be firmly supported, the phenomenon in which the coil terminal bends due to excessive clamping force during screwing to connect external wires can be effectively prevented.

In the coil terminal supporting apparatus of the magnetic contactor according to the present invention, the support end has an extended width, so that the coil terminal is screwed by placing the supporting end of the extended width on the supporting jaw provided in the lower frame of the magnetic contactor. It is possible to obtain an effect that can be effectively supported so that the bending of the coil terminal by the excessive tightening force during the fastening operation.

1 is a perspective view showing the appearance of a general magnetic contactor,
2 is a perspective view showing an example of an excitation coil device of a magnetic contactor according to the prior art,
FIG. 3 is an exploded perspective view showing a structure of a connection supporting member, a terminal screw, and a coil terminal separately in FIG. 2;
Figure 4 is a perspective view of the assembly of the coil terminal and the connection supporting member and the terminal screw showing the configuration of the support terminal in the coil terminal support apparatus of the magnetic contactor according to an embodiment of the present invention,
5 is a partially enlarged view showing the configuration of the coil terminal support apparatus of the magnetic contactor according to the preferred embodiment of the present invention,
6 is a perspective view showing a lower frame of the magnetic contactor to which the coil terminal supporting apparatus of the magnetic contactor according to the preferred embodiment of the present invention is applied, and an enlarged view of the support jaw portion.

The object of the present invention and the constitution and effect of the present invention to achieve the same will be more clearly understood by the following detailed description of the preferred embodiment of the present invention with reference to the accompanying drawings.

Figure 4 is a perspective view of the assembly of the coil terminal and the connection support member and the terminal screw showing the configuration of the support terminal in the coil terminal support apparatus of the magnetic contactor according to a preferred embodiment of the present invention, Figure 5 is a preferred embodiment of the present invention Part is an enlarged view showing the configuration of the coil terminal support device of the magnetic contactor according to the example, Figure 6 is a perspective view showing a lower frame of the magnetic contactor to which the coil terminal support device of the magnetic contactor according to an embodiment of the present invention is applied It is an enlarged view of a support jaw part.

4 to 6 are views showing only the coil terminal support device of the magnetic contactor according to the preferred embodiment of the present invention, and other parts of the magnetic contactor as shown in Figures 1 to 3 general magnetic contactor Reference may be made to the external configuration and the configuration of the excitation coil device, and therefore, the presentation of the drawings is omitted to avoid duplication.

Coil terminal support apparatus of the magnetic contactor according to the present invention is a support end 210 is provided at the end of the coil terminal 200, as shown in Figures 4 to 6, the support provided in the lower frame (10a) It is comprised including the jaw part 10a2. The support jaw portion 10a2 supports the support end 210 of the coil terminal 200.

As can be seen in Figure 6, the support jaw portion (10a2) is provided in the lower rear wall of the wire entrance (10a1) to allow the entrance of the external wire of the lower frame (10a) of the magnetic contactor.

As shown in FIGS. 4 and 5, the support end 210 provided at the end of the coil terminal 200 has an extended width. That is, the support end 210 is wider than other portions of the coil terminal 200. According to a preferred embodiment, the width of the support end 210 is in particular wider than the width of the opening of the connection support member 100 of FIG. 3 and with reference to FIG. 6 the wire entrance 10a1 of the lower frame 10a. It has a wider width than. Therefore, the support end 210 cannot be inserted into the opening of the connection support member 100 of FIG.

The operation of the coil terminal support device of the magnetic contactor according to the present invention configured as described above will be described with reference to FIGS. 4 to 6.

In order to connect the external wires W1, W2, W3 as shown in FIG. 2 to the coil terminal 200, the driving screw 300 is imposed downwardly with a screw driver during the screwing operation on the driving screw 300. ) Is rotated clockwise to raise the connection support member 100. At this time, even if the driving screw 300 is rotated in the clockwise direction while applying pressure downward with a screwdriver, the support end 210 provided at the end of the coil terminal 200 according to the present invention can refer to FIGS. 5 and 6. Since the support is supported from below by the support jaw portion 10a2, the phenomenon in which the coil terminal 200 is bent downward can be prevented from occurring.

10: magnetic contactor 10a: lower frame
10a1: wire entrance 10a2: support jaw
10b: upper frame 20: excitation coil device
100: connection support member 200: coil terminal
300: driving screw 400: bobbin
500a: terminal cover 500b: dust cover

Claims (3)

In the coil terminal support device of the magnetic contactor,
A support end provided at an end of the coil terminal; And
And a support jaw provided at a lower rear wall of the wire entrance to allow the external wire to enter and exit the lower frame of the magnetic contactor so as to support the support end of the coil terminal, and support the support end from below. Coil terminal support device for a magnetic contactor, characterized in that. delete The method of claim 1,
The support terminal is a coil terminal supporting device of the magnetic contactor, characterized in that the width is wider than other parts of the coil terminal.

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