JPS5826440Y2 - Clapper type magnetic contactor - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a clapper-type electromagnetic contactor, particularly to an improvement in the insulator that supports the conductive part.

As is well known, the conductive parts of an electromagnetic contactor include a power supply conductor, a fixed contact, a movable contact, a load-side conductor, etc., all of which are supported by a fixed metal part via an insulator.

In the conventional type, since the shapes of these insulators are different, it is necessary to prepare many types of parts, which has the disadvantage of increasing the cost.

This invention aims to improve the above-mentioned drawbacks, and provides a clapper-type electromagnetic contactor in which the insulator supporting the above-mentioned conductive part is made of one type of molded part with the same shape and configuration. It is something to do.

An embodiment of this invention will be described below with reference to FIGS. 1 to 5.

In the figure, 1 is a power supply side conductor, 2 is a fixed contact to which a fixed contact 3 is attached, 27 is a movable alloy to which a movable contact 4 is attached, 5
is a movable contact to which a movable alloy 27 is attached, 6 is a load-side conductor, 7 is a flexible conductor that connects the movable contact 5 and the load-side conductor 6, 8 is a power-side insulator that supports the power-side conductor 1, 9 10 is a load-side insulator that supports the load-side conductor 6; 11 is a fixed core; 12 is an electromagnetic coil wound around the fixed core 11; 12a, 12;
b is a terminal of the electromagnetic coil 12, 13 is a yoke plate that supports the fixed iron core 11 and forms a magnetic circuit, and 13a is a power supply side support plate that bends the yoke plate 13 toward the power supply side and supports the power supply side insulator 8. , 13b is a load-side support plate that bends the yoke plate 13 toward the load side and supports the load-side insulator 10; 14 is a load-side support plate 13b with a moon-shaped fulcrum portion 14a supported;
A movable insulator 9 is attached to the end of the movable core 14, which is attracted to the fixed core 11 by the energization of the electromagnetic coil 12, and a cut-and-raised tongue piece 1 formed on the load side support plate 13b.
3 Bending portion 1 formed by extending C and movable iron core 14
4b, the movable core 14 rotates clockwise in the figure with the moon-shaped fulcrum portion 14a as a fulcrum, thereby opening the contacts 3 and 4.

16 presses the movable contact 5 counterclockwise in the figure,
A push spring that applies a predetermined contact pressure between contacts 3 and 4, 1
7 penetrates the movable insulator 9, and the head 17a penetrates the movable insulator 9.
The spring support pin 18 hooked to is an adjustment nut for adjusting the spring pressure of the push spring 16.

Power supply side insulator 8, movable insulator 9 and load side insulator 10
The shape and structure of the two are molded surfaces made of synthetic resin, and the details of the structure are shown in FIG.

19 is a partition wall for maintaining a sufficient creepage distance between the charging part and the grounding part; 20a and 20b are through holes; 21 is a recess; 22
23 is a mounting hole, 23 is a side wall, and 24 is an inclined surface of a partition wall.

With the above structure, the power supply side insulator 8 is attached to the power supply side support plate 13a with the screw 25 passing through the mounting hole 22, and the power supply side conductor 1 is attached to the upper part with the screw 26 passing through the through hole 20b. Fix it.

In the movable insulator 9, a screw 25 passes through the mounting hole 22.
It is attached to the movable iron core 14 by the through hole 20 a.
A spring support pin 17 to which a push spring 16 for pressing the movable iron core 5 is mounted is passed through the head 17a, and the head 17a is attached to the movable insulator 9.
Let it hang on.

Further, the end of the movable contact 5 is inserted into the recess 21 and serves as a fulcrum when the contacts 3 and 4 are opened and closed.

The load side insulator 10 is attached to the load side support plate 13b by screws 25b passing through the mounting holes 22, and the load side conductor 6 is attached to the load side support plate 13b by screws 26a passing through the through holes 20b.
Fix it to the top.

Further, the lower end of the side wall 23 of the load-side insulator 10 prevents the moon-shaped fulcrum portion 14a of the movable core 14 from moving rightward in FIG. 1 due to the horizontal spring pressure component of the trip spring 15.

Furthermore, due to the deenergization of the electromagnetic coil 12, the tripping spring 15
Due to the spring pressure, the movable iron core 14 rotates clockwise in the figure about the moon-shaped fulcrum portion 14a, but the inclined surface 24 of the partition wall 19 functions as a stopper.

As described above, with this invention, the insulator that supports the conductive part is made common by using one type of molded part with the same shape and configuration, which increases the production lot and reduces inventory costs, thereby reducing the product cost. can be reduced.

[Brief explanation of drawings]

Figures 1 to 5 show an embodiment of this invention; Figure 1 is a sectional view showing the structure of the device, Figure 2 is a plan view, Figure 3 is a perspective view of the insulator, and Figure 4 is a cross-sectional view showing the structure of the device. A perspective view of the yoke, and FIG. 5 is a perspective view of the movable iron core. In the figures, the same reference numerals indicate the same or corresponding parts, 1
is the power supply side conductor, 5 is the movable core contactor, 6 is the load side conductor,
8 is a power supply side insulator, 9 is a movable insulator, 10 is a load side insulator, 13a is a power supply side support plate, 13b is a load side support plate,
14 is a movable iron core, 16 is a push spring, 17 is a spring support pin, 19 is a partition, 20a, 20b are through holes, 21 is a recess,
22 is a mounting hole, and 23 is a side wall.

Claims (1)

[Claims for Utility Model Registration] Partition walls formed in parallel, an intermediate member disposed between the partition walls and having a through hole and a recess formed on the top surface, and a mounting hole protruding outward from the partition wall. a movable contact fixed to a first insulator fixed to a movable iron core in the plurality of insulators using the mounting hole; A clapper comprising a power supply side conductor fixed to a second insulator fixed using a hole, and a load side conductor fixed to a third insulator and a load side support plate using the mounting hole. - type electromagnetic contactor.