JPS59154717A - Power switching device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to power switching devices such as electromagnetic contactors and wiring Sockets, and particularly relates to improvements in commutating electrodes.

Conventional electromagnetic contactors are shown in Figures 1, 2, and 3a.

In the figure, (1) shows an arc extinguishing arc box made of heat-resistant material, with a grid (2+ and commutating electrode (3) made of magnetic metal). The cast is fixed according to the number of phases of the electrical circuit to be opened and closed. (4) Hakurosuno (-t (
5] is a movable IBJ contact, (6) is a movable contact attached to the bottom of the movable contact (5), (7) is an oJ movable contact presser, (8) is a presser spring support, (The 9th one is the contact, (
1 (l stands for "Stotsunoku-". The above contact spring (9; is fixed in the regular section between the lower part of the stone/<-Qα and the lower end of the presser foot spring support (8), and the presser foot is The upper end of the spring support (81) and the upper surface of the movable contact valve valve (7) and the movable contact (
The upper surface of the movable contact valve 51 and the lower surface of the movable contact valve valve (7) are assembled so that the terminal 2 comes out.

(131 is a fixed contact, σ center is a fixed contact, the movable contact (5) and fixed contact αJ are provided facing each other,
The pJ working point (6) and the fixed contact a4 can be brought into contact with and separated from each other.

05) is an arc runner.

Such a movable contact mechanism is connected to a well-known built-in electromagnetic drive device via a movable contactor (9+); They are arranged in correspondence with the number of phases of the electrical circuits that open and close in the direction perpendicular to the plane of the paper.

FIG. 2 is a perspective view schematically showing the main parts of FIG. 1, such as the commutation plate (3), the movable contact X5), and the movable contact (6).

Furthermore, when the portions of the fixed contact holder, fixed contact I, and arc runner f15) in Fig. 1 are schematically enlarged, Fig. 3 a
, b. In fig.

31) to (b) indicate the first to fourth surfaces, respectively.In this electromagnetic contactor, the fixed contact I and the movable contact (
When 61 is opened, one end of the arc generated between the inner contact 9 and 61.141 is connected to the moving contact (61 to commutating electrode
3) The other end is transferred from the fixed contact α female to the arc runner (15). The other end of the transferred arc moves toward the end on the arc runner U51, and eventually the arc is moved between the vertical part of the arc runner US and the commutating electrode (3) that cuts the arc. The arc is extinguished.

By the way, the commutation electrode t31 in the conventional electromagnetic contactor had a shape as shown in FIG. In this commutation electrode, an arc u? + foot has occurred,
Commutation basket'Jjdp (If the components flowing into the legs of the arc runner are shown as 11+ 12+ 13, the arc +1
71 fl 'Fixed contact 1131 by viewing the evil current component
In response to the 41@ power to the grid (2) side, the driving force to the grid (2) side is weakened. For this reason, sufficient blocking performance could not be obtained.

This invention was made in order to eliminate the entry points of the conventional ones as described above, and the direction from the side opposite to the side joined to the third surface of the fourth surface to the joined side. It is an object of the present invention to provide a power disconnection device with excellent interrupting performance by providing a notch extending a predetermined length on the entire fourth surface.

Is the following an implementation of this invention? I will explain based on ll.

Figure 4 (d) Shows the fall t military envoy related to the fruit of this invention MH. In Figure 1, (3A)
110iI'j: the side that is joined to the joined side (3A) by a predetermined length in the direction of the joined side (3A) from the side opposite to the joined side (3A) in the fourth facing It is a flip notch. 9. Although not shown, the commutation electrode 431 has a predetermined thickness.

Now, 'Contact t61 of the power switchgear. When IIC is opened, the arc α? generated between 9 internal contacts (6!, 144)
The third surface of the commutating electrode (3) and the arc runner [15
Transfer to 1. , the arc travels between the 30th plane and the arc runner (19), and finally reaches the commutating electrode (3).
4th surface (b), grid (2) and arc runner US
An arc αη exists between the + grid (21) and the opposing surface (15A). One leg of the arc α7) In this case, the current components flowing from the commutating electrode (3) to the arc contact 7) are 11 and 12, which drives the current component 13+ in the conventional example of Fig. 2, that is, the arc (17) to the fixed contact U. However, since there is no component that reduces the driving force to the grid (21 side), the arc α7 is strongly driven to the grid (211 law), resulting in excellent transfer v1 performance. The shape of the notch (i mark) was made rectangular, but this is not suitable for VC.

In addition, in the case of electric contact I9!1 where there is no arc runner L151, the fixed contact (the arc foot generated at 11 is transferred to the fixed contact (13), and this arc foot is a fixed contact).
” Meko+131 runs all the way. Then, the other leg of the arc i'J 0J' hJ contact (61 to transverse electrode (3
], the situation in which the arc is driven is the same as in the case where the arc runner U5I is engaged even when there is no arc runner (19).Therefore, it is clear that the 9-light beam is also effective for electromagnetic contactors without the arc runner 05]. Ruru.

Furthermore, this invention! It can be applied not only to the magnetic contactor but also to other power switching devices such as the PF switch for wiring.

According to the present invention, the notch extends from the side opposite to the side joined to the third surface of the fourth surface in the direction of the joined side by a constant length T. Since it is provided on the fourth surface, there is an effect that a collapsed power switchgear with no traceability can be obtained.

[Brief explanation of the drawing]

The first problem is a side view showing a conventional electromagnetic contactor partially in section, and FIG. View from above, Figure 3 aUjA
Fig. 1 is a semi-union view showing the arc runner and the LL8LI foot contactor, Fig. 3 is a cross-sectional view showing the A-A cross section of Fig. 3a, and Fig. 4 is an embodiment of the present invention. This transformation Me
FIG. 3 is a top view showing an electrode. In the figure, (2I is the grid, (3) is the commutation electrode s
(!51 is a movable contact, (6 (is a movable contact, α31 is a fixed rectangular contact. 041tri fixed contact, 03 to 4) are the 81st to 4th surfaces of the commutation electrode (3), (3A ) is the fourth side (
The side where the third surface 031 - is joined to Q&+
ID notch and wholesale are connected by arc. Note that the same reference numerals in Figure 9 indicate the same or corresponding parts.・Toto Shin Kuzuno - Figure 2 Figure 4 Figure 1 Figure 3/3 ((1) /j tb)

Claims (1)

[Claims] a fixed contact, a fixed contact joined to the fixed contact, a movable contact provided opposite the fixed contact;
A movable contact that is connected to the J-moving contact and has an H shape for contacting and separating from the fixed contact, a grid provided parallel to the contacting and separating direction of both of the contacts, and facing the contact surface opposite to the contact surface of the movable ER element. a first surface parallel to the contact/separation direction, a third surface opposite to the contact joint surface V of the contactor, and a fourth surface opposite to the grid. 2 above.
The third surface is provided with a notch that does not prevent the movable contacts from coming into contact with each other, and the first, second and third surfaces are provided with a notch that does not prevent the movable contacts from coming into contact with each other. Third. In a power switchgear equipped with a commutation plate electrically connected in the order of the fourth surface, the direction from the side opposite to the side joined to the third surface of the fourth surface to the joined side. A power switching device characterized in that a notch extending to the fourth surface is provided entirely on the fourth surface.