JPS63126133A - Electromagnetic contactor with latch - 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 This invention relates to an electromagnetic contactor with a latch for holding a container.

In general, magnetic contactors with latches are used for ordinary electromagnetic liquid acid, which opens and closes contacts by energizing and demagnetizing the closing coil.
This will be explained using FIGS.

In the figure, 9 (1) is a movable contact, (2) is a crossbar that holds the movable contact (1), and 2 (3) is a crossbar (2) that holds the movable contact (1).
) via a movable core pin (4),
(5) is a pair of levers each having a hole through which the movable core bin (4) passes.They are provided on both sides of the movable core (3) in the stacking direction, and a connecting plate (6) is attached to one end of the lever with a screw (
7), and this connecting plate (
6) is rotatably held by a shaft 191 supported by the base (8) of the main body. Also, (1■ is the lever (5)
A latch receiver (10) is rotatably attached to the other end with a screw (111), and the latch receiver (10) is provided with a groove 0J provided in the latch base (12+) and a slidable protrusion (not shown). The latch base 0z is fixed to the latch mounting plate σ with screws, and the latch mounting base is screwed (
(not shown) to the rail plate α opening, and the rail plate side is further fixed to the base (8) with screws (17).

Eventually, the latch base α2 will be fixed to the base (8). 0gJ is a latch rotatably attached to the latch base (12) by shaft α9, (20+ is a groove provided in latch 0 (to), (2D is the shaft part ■ inserted into the groove (20) above) The tripping movable core, ■) is the tripping coil that drives the tripping movable core +21),
1241 is a yoke plate provided on the outer periphery of the tripping coil coil, and 1241 is a tripping spring.
1.

In addition, a magnetic path is formed between the latch mounting plate a, the tripping iron core (21+), and the yoke plate (to). Also, □□□ is the fixed iron core facing the movable iron core (3), and @ is the coil Case(
(to)) and is a closing coil that is wound around a fixed iron core.

Along with the fixed core (26) and coil case, the rail plate 0
6) is fixed. The device is a self-degaussing switch that cuts off the current of the input coil, and ■ is the operating plate that opens and closes the self-degaussing switch 4. One end is inserted into the latch base (groove C31 formed on 12+), and the other end is the self-degaussing switch. (
It is in contact with the auxiliary crossbar C32+ of the support.

Then, insert the latch 0 into the hole (2) made in the central bent part.
An imperial word connected to 81 is inserted, whereby the actuating Iida is rotatably held with respect to the latch base uz.

The self-demagnetizing switch has a latch base az with a screw.
It is fixed to , and is configured as 9th order.

□□□ is the switch base that makes up the self-degaussing switch, (branch) is the four relay terminals that are fixed to the switch base and connects external wires to the closing coil 10 and the tripping coil ◎, and 09) is also the switch A pair of fixed contacts fixed to the base country, +401 is a movable contact opposite to the fixed contact (39), (41) is a pressure spring that biases the movable contact (40), and this movable contact f40 ), Oshihane+
411 is the square hole (4) formed in the auxiliary crossbar (37J).
It is held at 3. (431 is the auxiliary crossbar C32
A trip spring that biases the auxiliary crossbar C3Z
A predetermined sliding movement is performed within the plane of the switch base. (44) is fixed to the switch base country and covers the top of it, +451 is the switch cover (
Attached to 441.

With a push rod that manually releases the latch mechanism.

This push rod (45) passes through the hole (461 (471) provided in the switch cover (441) and faces the protrusion (48) formed at the end of the latch (181). (491
is a trip spring that biases the push rod (451), (50) is a retaining ring attached to the tip of the push rod (451), and (51) is a spring between the latch base α2 and the latch mounting plate Oa. The vertical position of the latch base (1z) relative to the latch mounting plate (04) can be adjusted by increasing or decreasing the spacer slope.

Also, R is the gap between the yoke plate 1241 and the tripping iron core Q1).

The tripping iron core (located 2υ in the left-right direction) with respect to the yoke plate 1241 will now be described with reference to FIG. 4 regarding its electrical connection configuration.

The closing coil is connected in series with the contact part (5) of the self-demagnetizing switch (5), and when the electromagnetic contactor is mechanically held, the contact part (5) opens and is demagnetized.

In addition, the tripping coil (23) is connected in series with the normally open contact (54) of the auxiliary contact (54) that operates in parallel with the main contact portion (2), and is connected in series to the normally open contact ((to) of It is configured to open circuit and be demagnetized.

Next, the operation of the electromagnetic contactor with the above configuration will be explained. FIG. 1 shows the open state after the latch mechanism has been released, and FIG. 3 shows the held state held by the latch mechanism.

For convenience of explanation, the operation of changing from the open state to the holding state will be referred to as the closing operation, and the operation of changing from the holding state to the open state will be referred to as the tripping operation, and the closing operation will be explained first.

In Fig. 1, when the input coil 10,000 is energized.

The movable iron core (3) is attracted by the fixed iron core α) and moves in the direction of arrow A. One end of the lever (5) and the connecting plate (6) rotate in the direction of arrow B around the screw (7), and the lever (5) rotates in the direction of arrow B.
5) The other end and latch receiver q■ move in the direction of arrow C.

When the movable iron core (3) is attracted to the fixed iron core (26) and the corner (-) of the latch receiver (10) is removed from the corner (3) of the latch (19), the latch (18) moves in the direction of the arrow around axis a9. The - side (5→) of the latch (18) enters above the - side (to) of the Unochi holder!10). Latch q
The movement of the prisoner is carried out by the biasing force of the trip spring 3) via the trip iron core (21), the 9 operating plate (2), and the trip spring (43) via the auxiliary crossbar (321).

The shaft α) connected to the latch 0& rotates in the direction of the arrow E around the axle load in the same way as the latch ball, and the actuating plate When the tip of the actuating plate (■) rotates in the direction of arrow E, the auxiliary crossbar (37J), which is biased by the tripping spring (431), moves in the direction of arrow E and moves from the fixed contact (exposed) to the movable contact ( 40) opens.The contact part (
5 When the brocade is opened, the input coil So is demagnetized and the movable iron core (
3), the fixed core moves further apart and moves in the opposite direction to the arrow A direction. As the movable iron core (3) moves, the latch receiver fl
o) moves in the opposite direction to the arrow C direction, but as shown in Figure 3, one side of the latch receiver tlGl (5I3 and the latch 0 second side (51) come into contact and the latch receiver C1■ is locked by the latch mark. In order to do this, the crossbar (2) is mechanically held to complete the closing operation.

Next, the tripping operation will be explained.

In FIG. 3, the normally open contact in the closed circuit state (when the tripping coil coil connected in series with 5υ is excited, the tripping iron core I21) is attracted to the yoke plate L and moves in the direction of arrow F. The latch mark connected to the trip iron core (211) rotates in the direction of arrow G, and the latch +181 is released from the latch receiver f1ω, releasing the engagement. When the engagement is released, the latch receiver +XO+ rotates in the direction of arrow H. To.

The lever (5) is moved in the direction of the arrows H and J, the connecting plate (6) is moved in the direction of the arrow J, the movable core (3) is moved in the direction of the arrow, and the crossbar is moved in the direction of the arrow.
(2) respectively move in the directions of the arrows and return to the open state shown in FIG. While the crossbar (2) is moving, the normally open contact (5→
is opened to demagnetize the tripping coil (23), and by moving the latch mark, the 7 actuating plate (■) and the auxiliary loss bar Gz are moved in the direction of the arrow to return the contact portions (5) to the closed state.

Next, a case will be described in which the closing operation and the tripping operation are performed manually.

The manual closing operation can be performed by pressing the tip of the crossbar (2) with a screwdriver or the like and pushing the crossbar (2) in the direction of arrow M in FIG.

In addition, the 2-manual release operation is performed using the push rod (4) in Figure 3.
By pushing ω in the direction of arrow N with a screwdriver, etc.,
The latch u81 is rotated in the direction of the arrow G and pulled as described above about the axis α9 in contact with the protrusion (48) of the latch (1&), and the lever rotatably mounted on the movable core is connected to the movable core. Since it is provided on both sides in the stacking direction, the lever is located above the closing coil, so there is no need to provide extra space between the closing coil and the base, and a compact magnetic contactor with a latch can be provided. .

It is an electrical connection diagram of the contactor.

In the figure, (3) is the movable core, (5) is the lever, flol
is the latch receiver, (13 is the latch base, (131 is the groove, circle is the latch mounting plate, (181 is the latch, CI) is the tripping core, is the tripping coil, and ■ is the fixed core.

Note that the same reference numerals in the two figures indicate the same or equivalent parts.

Claims (1)

[Claims] A fixed core, a movable core disposed opposite to the fixed core, a lever rotatably attached to the movable core, a latch receiver rotatably attached to one end of the lever, and the latch receiver slidably attached to one end of the lever. a latch base having an engaging groove; a latch mounting plate mounted on the latch base; a latch rotatably mounted on the latch mounting plate and engaged with the latch receiver; A latch comprising a trip iron core that controls engagement between the latch and the latch receiver, a trip coil that operates the trip iron core, and the levers are provided on both sides of the movable iron core in the stacking direction. Comes with a magnetic contactor.