JPH0512898Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] This invention relates to a magnetic contactor with an additional auxiliary contact block, and in particular to the installation of an additional auxiliary contact block.

[Conventional technology]

Figure 8 is a partial sectional view showing the outline of a conventional electromagnetic contactor, Figure 9 is a partial sectional view showing how the additional auxiliary contact block is attached, and Figure 10 is the electromagnetic contactor main body and the additional auxiliary contact block separated. It is a sectional view showing a state.

In the figure, 1 is a rectangular parallelepiped-shaped electromagnetic contactor main body, 2
3 is a rectangular parallelepiped-shaped additional auxiliary contact block attached to the head of the electromagnetic contactor main body 1; 3 is a main body crossbar disposed in the center of the electromagnetic contactor main body 1; 4
is a movable contact held on the main body crossbar 3 by a contact spring 5, 6 is a fixed contact that comes into contact with and separates from the movable contact 4, and 7 is the head of the base 8 of the electromagnetic contactor main body 1. A pair of engaged parts facing each other at a predetermined interval on the upper surface, and an engaging groove 7a on the outer surface.
They each have Reference numeral 9 denotes a retaining protrusion provided on one side of the center of the top surface of the base 8, and 10 is a stopper portion provided on the other side of the center of the top surface of the base 8.

11 is an auxiliary crossbar provided in the center of the additional auxiliary contact block 2; 12 is an auxiliary movable contact held on the auxiliary crossbar 11 by an auxiliary contact spring 13; and 14 is an auxiliary movable contact 12.
Fixed contacts 15 that come into contact with and separate from the additional auxiliary contact block 2 are engaging protrusions provided on both inner surfaces of the bottom of the base 16 of the additional auxiliary contact block 2. Reference numeral 17 denotes a slider that is movable up and down at the center of the lower side wall of one end of the base 16 of the additional auxiliary contact block 2, and is biased downward by a spring 18.

A conventional electromagnetic contactor is configured as described above, for example, an additional auxiliary contact block 2 is added to the electromagnetic contactor main body 1.
When installing the additional auxiliary contact block 2, slide the bottom of the additional auxiliary contact block 2 in the length direction to the predetermined mounting position on the top surface of the head of the electromagnetic contactor body 1, and the additional auxiliary contact block 2 will fit into the engagement groove 7a of the electromagnetic contactor body 1. When the engaging protrusions 15 of the contact block 2 are engaged, the main cross bar 3 and the auxiliary cross bar 11 are also fitted, and the two are mechanically connected.

At this time, the tip of the slider 17 of the additional auxiliary contact block 2 engages with the retaining protrusion 9 of the electromagnetic contactor main body 1, thereby preventing the additional auxiliary contact block 2 from coming off.

[Problem that the invention attempts to solve]

In the conventional electromagnetic contactor configured as described above, an additional stopper protrusion 9 is provided on one side of the center of the upper surface of the head of the electromagnetic contactor main body 1, and an additional attachment is provided at the lower center of the side wall at one end of the base 16 of the auxiliary contact block 2. The tip of the slider 17, which is movable up and down and urged downward by a spring 18, engages to prevent the additional auxiliary contact block 2 from coming off. 2, the height of the slider 17 at the bottom becomes a dead space, making it impossible to make it thin, and when the additional auxiliary contact block 2 is attached to the electromagnetic contactor body 1, problems occur in the depth direction during use. . Further, since the slider 17 and the retaining protrusion 9 are engaged with each other by the biasing force of the spring 18 that biases the slider 17, there is no play between the electromagnetic contactor main body 1 and the additional auxiliary contact block 2. This is likely to occur, and the additional auxiliary contact block 2 moves when the electromagnetic contactor main body 1 opens and closes, causing malfunction or breaking of the electric wire.
There are problems in that the engagement portions of the slider 17 and the retaining protrusion 9 are subject to increased wear, and furthermore, when a large impact force is applied to the additional auxiliary contact block 2, there is a risk of damage.

This idea was made in order to solve these problems, and it is possible to securely attach an additional auxiliary contact block to the electromagnetic contactor body without causing problems in the depth direction and without causing play. The purpose is to obtain a contactor.

[Means for solving problems]

The electromagnetic contactor according to this invention has a mounting screw hole provided on the top surface of the head of the electromagnetic contactor body between the main body crossbar and one side of the intermediate contact terminal part, and auxiliary contact terminal parts arranged on the left and right sides of the center part. At the bottom of the additional auxiliary contact block formed in a two-pole structure, a mounting hole is provided on one side of the hollow part located between the auxiliary crossbar and the left and right auxiliary contact terminals, and a fixing screw is inserted through the mounting hole. The additional auxiliary contact block is fixed to the electromagnetic contactor body by screwing it into the mounting screw hole.

[Effect]

In this invention, the additional auxiliary contact block is attached to the electromagnetic contactor by screwing a fixing screw that passes through the mounting hole provided at the bottom of the additional auxiliary contact block into the mounting screw hole provided on the top surface of the head of the electromagnetic contactor body. Since it is fixed to the contactor body, there is no need for a conventional slider, and the additional auxiliary contact block can be firmly fixed to the head of the electromagnetic contactor body by tightening the fixing screw with a screwdriver. I can do it. In addition, the auxiliary contact terminals of the additional auxiliary contact block are placed on the left and right sides of the center, and are located in the dead space created by the absence of a slider. The contact block is securely fixed to the electromagnetic contactor body.

〔Example〕

Figure 1 is a partial sectional view showing an embodiment of this invention, Figure 2 is a plan view of the electromagnetic contactor body, Figure 3 is a front view of the electromagnetic contactor body, and Figure 4 is an addition to the electromagnetic contactor body. An explanatory diagram showing the state immediately before the auxiliary contact block is installed, Fig. 5 is a plan view of the additional auxiliary contact block, Fig. 6 is a sectional view taken along the - line in Fig. 5, and Fig. 7 is a sectional view taken along the - line in Fig. 5. It is a diagram. In the figure, the same reference numerals as in the above conventional example indicate the same parts. 2
Reference numeral 1 denotes a mounting screw hole formed at the center of the upper surface of the head of the base 8 of the electromagnetic contactor main body 1 between the main body crossbar 3 and one side of the intermediate contact terminal portion 1a. 2 is an auxiliary contact terminal part 2 arranged on the left and right sides of the intermediate part.
This is an additional auxiliary contact block formed in a bipolar structure with a hollow part 2c in the middle.
22 is the bottom of the base 16 of the additional auxiliary contact block 2, and 23 is a fixing screw for attaching the electromagnetic contactor body 1 and the additional auxiliary contact block 2. It is.

In the electromagnetic contactor configured as described above, an additional auxiliary contact block 2 is added to the electromagnetic contactor main body 1.
When installing an additional auxiliary contact block 2 on the head of the electromagnetic contactor body 1, align the mounting screw holes 21 of the electromagnetic contactor body 1 with the mounting holes 22 of the additional auxiliary contact block 2, and install the additional auxiliary contact block 2. After positioning the block 2 at the mounting position with respect to the electromagnetic contactor main body 1, insert the fixing screw 23 through the mounting hole 22 and screw it into the mounting screw hole 21. The contact block 2 is securely fastened to the electromagnetic contactor main body 1 without wobbling. Such mounting screw holes 21 and mounting holes 22
is provided toward the inside of the head of the base 8 of the electromagnetic contactor body 1 and the bottom of the base 16 of the additional auxiliary contact block 2, and the mounting hole 22 is provided between the auxiliary contact terminal parts 2a and 2b of the additional auxiliary contact block. Since it is provided in the hollow part 2c, the additional auxiliary contact block 2 is provided with a retaining protrusion 9 on the conventional electromagnetic contactor body 1 and the additional auxiliary contact block 2 is provided with a slider 17 that moves up and down. The height does not increase, and the additional auxiliary contact block 2 can be attached to the electromagnetic contactor main body 1.
The problems in the depth direction that occurred when used with the camera attached to the camera do not occur. In addition, since the fixing screw 23 is used to tighten and fix, even when a large impact force is applied to the additional auxiliary contact block 2, there is no fear that the additional auxiliary contact block 2 will be damaged as in the conventional case.

[Effect of idea]

As explained above, this device is designed to provide additional support by screwing a fixing screw that passes through the mounting hole provided at the bottom of the additional auxiliary contact block into the mounting screw hole provided on the top surface of the head of the electromagnetic contactor body. Since the contact block is fixed to the electromagnetic contactor body, there is no need for a conventional slider, and the additional auxiliary contact block can be firmly attached to the head of the electromagnetic contactor body by tightening the fixing screw with a screwdriver. Moreover, the auxiliary contact terminals of the additional auxiliary contact block are placed on the left and right sides of the center, and are located in the dead space created by the absence of a slider, so the height of the additional auxiliary contact block can be increased. This has the effect that problems in the depth direction do not occur when the electromagnetic contactor is properly installed and used.

[Brief explanation of the drawing]

Figure 1 is a partial sectional view showing an embodiment of this invention, Figure 2 is a plan view of the electromagnetic contactor body, Figure 3 is a front view of the electromagnetic contactor body, and Figure 4 is an addition to the electromagnetic contactor body. An explanatory diagram showing the state immediately before the auxiliary contact block is installed, Fig. 5 is a plan view of the additional auxiliary contact block, Fig. 6 is a sectional view taken along the - line in Fig. 5, and Fig. 7 is a sectional view taken along the - line in Fig. 5. Fig. 8 is a partial sectional view schematically showing a conventional electromagnetic contactor, Fig. 9 is a partial sectional view showing an outline of a conventional magnetic contactor.
The figure is a partial sectional view showing the state in which the additional auxiliary contact block is attached, and FIG. 10 is a sectional view showing the state in which the electromagnetic contactor main body and the additional auxiliary contact block are separated. In the figure, 1 is the electromagnetic contactor main body, 2 is an additional auxiliary contact block, 3 is a main body crossbar, 11 is an auxiliary crossbar, 21 is a mounting screw hole, 22 is a mounting hole, and 23 is a fixing screw. In each figure, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claim for Utility Model Registration] An additional auxiliary contact block is attached to the head of the electromagnetic contactor body, and an auxiliary contact block is attached to the main body crossbar provided in the center of the electromagnetic contactor body and the auxiliary contact block is provided in the center of the additional auxiliary contact block. In an electromagnetic contactor that is mechanically connected to a crossbar to move the auxiliary movable contact of an additional auxiliary contact block, there is a connection between the main body crossbar and one side of the intermediate contact terminal section on the top surface of the head of the electromagnetic contactor body. A mounting screw hole is provided in the open space between the two terminals, and the additional auxiliary contact block is formed into a bipolar structure with auxiliary contact terminals that can be placed on the left and right sides of the center. Make a mounting hole on one side of the hollow space located in the middle of the auxiliary contact terminal section, pass the fixing screw through the mounting hole, screw it into the mounting screw hole, and attach the additional auxiliary contact block to the electromagnetic contactor body. An electromagnetic contactor characterized by being fixed.