JPS58184229A - Motor driven spring operating mechanism for circuit breaker - 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 an improvement in the winding (storage) part of the electric bat operation mechanism of a stone one-way circuit breaker.

FIGS. 1 to 8 show a conventional ttii, s spring operating mechanism, and the structure and operation thereof will first be explained based on these drawings. That is, the main shaft (2) is supported by a bearing (1a) attached to the mechanism frame (to) and a bearing (82a) attached to the mechanism frame (to), and the backstop one-way clutch ( Due to the action of the one-way rotating clutch (lb), the (
b) Only rolling is allowed. The main shaft (2) is equipped with a mold wheel (to), a charging cam (3), and a crank arm (c) so as to rotate together.

And the model wheel (to) is fitted with a concentrically freely rotating accumulating arm (to), (to), and this accumulating arm can, (to)
The roller (to) that comes into contact with the energy storage cam attached to the motor shaft is connected to the p-ra mounting pin-G? It is attached with l, the father type (to) is connected by the claw attachment pin (to), '5
The claw is constantly pressed against the model car by a torsion spring provided on the spring shaft.

On the other hand, the spring shaft has an energy storage arm (toward) as shown in Figure 8.
, (to) in the direction of the arrow (d) is connected, and the other end of this spring is connected to a spring mounting pin attached to the frame (1).

A roller (4) is attached to the closing cam (81) with a roller shaft (5), and the roller (4) comes into contact with the closing latch (6) after energy storage is completed.The closing latch (6) is connected to the latch shaft (7). The frame (1)
It is biased in one direction by a spring tension spring (9) following a spring mounting pin (101) attached to the side and maintains its position by abutting against a stopper pin (8).

The operating lever (15) has arms that branch in three directions, and is rotatably supported with the center part as an axis.One arm is in contact with the closing cam (8), and this operating lever (+5) is 1st
A roller (for rotating in the direction of the arrow (0) shown in the figure) is attached with a roller shaft (9)), and a row release latch (11) is attached to the father's arm to maintain the rotation position.
A roller 06) which engages with is mounted with a roller axis αη. Furthermore, an operating rod (2) is connected to one arm with a connecting pin #4. Although not shown, the operating rod (c) is connected to a contact point for opening and closing an electric circuit. In addition, outside the column, , 5 two, (1
υ is Ra, axis 0FJk1. It is movable and attached to the spring mounting bin (2), and is biased by a tension spring (4) attached to the spring mounting bin (2), so as to come into contact with the roller (06). - is a row release spring for the operating lever (B), one end of which is attached to the spring mounting pin ←, and the other end is attached to the spring mounting pin (9) of the operating lever (B). The direction opposite to the direction of the arrow (0) shown in Figure 1, centering on ), that is, the arrow (IP) shown in Figure 2
The end position is maintained by a stopper pin eυ.

It should be noted that the row removal spring and the stopper bin Qυ are not mounted at a different position than shown in the figure, but are generally held in the final position, that is, the row removal completion position, in combination with a damper device or the like.

As shown in Figures 4 to 6, the 2-ink arm is attached to the closing spring via the spring mounting bracket ■, and to the crank bin), and the other end of the closing spring) is attached to the spring mounting bracket ■. , the bottle (2), and the bearing stand are connected to the main body frame Gυ.

The conventional mechanism has the above-mentioned structure, and when the input is made, 1: Accumulation of assets starts from the state shown in FIGS. 2 and 8. At this time, the state of the other Yayanari parts is shown in Figures 5 and 8.
The state shown in the figure is maintained. At this point, a command is first input to the electric motor, and the energy storage cam attached to the motor shaft rotates. This energy storage cam is an eccentric cam, and the energy storage arms (to) and (to) swing through an angle of θ1 shown in Fig. 7, and are attached to the energy storage arms (to) and (to). Use the sticky claws to roll the mold wheel (c) in the direction of the arrow (B) shown in Figure 8 (b). For this reason, as shown in FIG. 5, the crank arm (C) also moves in the direction of the arrow (B), extending the closing spring () and accumulating spring force. And crank bin (
When the load (fit) passes the upper blunt point, the crank arm (fit), main shaft (2), and input cam (81) begin to overrun together due to the spring force, and the input cam (loading cam (8)) begins to overrun. The roller (4) that was not installed comes into contact with the closing latch (6) and stops. This overrun operation activates a limit switch (not shown) and issues a stop command to the motor. However, the motor The mold wheel 03 stops rotating due to inertia, but after the overrun described above, the mold wheel 03 is not machined with teeth, so the mold wheel 03 is not rotated due to the inertia of the motor. This is shown in FIG. 1, FIG. 4, and FIG. 7, and is in the so-called state of energy storage completion.

Next, when the closing latch (6) shown in FIG. 1 is operated in the direction of arrow (A) using, for example, an electromagnet, the closing cam (8, I) moves simultaneously in the direction of arrow (B) due to the force of the closing spring.

At this time, the input cam (3) contacts the roller attached to the operating lever), rotates the operating lever) in the direction of arrow (0), and rotates the operating rod) in the direction of arrow (D). to close the electrical contacts (not shown). At this time, the row removal latch 0 and the roller 0a are engaged and this state is maintained, and the row removal spring is extended to accumulate the row removal force. Next, as shown in FIG. 2, if the row removal latch 0υ is operated in the direction of the arrow (II5), the row removal will be in the state shown in FIG. 8 due to the force of the row removal spring.

In other words, this is a cutoff state, and the above operation will be repeated from now on.

Now, after the energy storage is completed (Figure 4), when the energy is released (loaded), the position of the crank bin (on the crank bin) is lowered due to the inertia of the moving body (main shaft, die wheel, input cam, etc.) as shown in Figure 6. past the point,
It further rotates in the direction of arrow (B).

At this time, the closing spring () is once compressed and then extended again as it passes the bottom dead center, and when this spring force and the inertia of the interlocking body are balanced, it is moved in the opposite direction, that is, the arrow (,
Try to rotate the moving body in the r) direction. However, at this time, the one-way clutch (1b) for the backstop and the main shaft (2) attached to the mechanism frame (1) shown in Figure 6
engages, moves slightly in the direction of the arrow (, r) by the engagement backlash of the one-way clutch (1b), and stops at an angle of θl. By the way, the above-mentioned one-way clutch rotates in one direction by the same amount as the frictional resistance of the bearing, and locks the rotation in the opposite direction with a slight backlash.

The position of the above θ error is not always constant if you look at it lamicroscopically,
The position of the θ yoke changes depending on the frequency of use, an increase or decrease in frictional resistance due to changes in the environment, etc. Therefore, when it stops at the loading completion position shown in Figure 8, the tip of the claw (b) and the mold wheel (to)
There are times when the tips of the teeth collide with each other, and in particular, the impact force during rotation in the (, r) direction has the disadvantage that part of the large pot (claw (2)) and the mold wheel (to) are damaged.

The present invention attempts to eliminate the drawbacks of the conventional one-way clutch by allowing the pawl to move slightly beyond the amount of backlash of the one-way clutch.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 9 shows a state in which energy storage is completed. In the figure, (to) is a mold wheel, and <Baa) is a convex portion that moves the latch 6υ in the direction of arrow (S), which protrudes into the soil from the outer periphery of the mold wheel (to). The latch 60 and the pawl (B) are connected to each other by a moving shaft (to), and are supported so as to be able to move around this moving shaft (to). Both ends of the moving axis (to) are connected to the energy storage arm C.
(!Oval hole provided in 9ci (85a) (86b)
It is fitted through the holder so that it can move inside the oval holes (85a) and (86b).

The ring is a stopper and is fixed to the energy storage arm. (To) is a compression spring that rotates the latch 61) in the opposite direction to the direction of arrow CB), and the compression spring ring is for engaging the pawl (To) with the mold wheel (To). .

Next, Fig. 10 shows the state in which the mold wheel (to) is rotating in the direction of the arrow (ri), and Fig. 11 is a sectional view taken along I-1 in Fig. 9. The present invention has a structure as described above with respect to its embodiments, and its operation will next be described.

In the state shown in Fig. 9, when it is put into the released state, the mold wheel (to) rotates in the direction of the arrow (, T), and the protrusion (88a) provided on the mold wheel (to) is latched ← Arm part of υ (51a)
Rotate the latch in the direction of the arrow (S) around the moving axis (to). When the latch 61) rotates, the hook portion (51b) provided on the latch comes off the stopper. When the hook is released in this way, the latch and pawl (b) supported by the moving shaft (2) are moved to the left in the figure by the force of the compression spring together with the moving shaft (to). ) (to) along the oval holes (85a) (86b). The state is shown in FIG. The mold wheel (to) rotates further, and when the release of the input energy is completed T, the mold car (to) rotates further.
The relative positions of (to) and pawl (-) are as shown in FIG. 8 described above. As mentioned above, this situation is caused by the one-way clutch backlash (
play) moves slightly by il and then stops. This model car (
If the tip of the teeth of the arm (to) and the tip of the claw (b) are engaged, the claw (b) will fit into the oval groove (hole) provided in the storage arm (to) (to).
Accordingly, escape to the right side with respect to Figure 10. Next, in the process in which the charge command is issued and the charge arm (C) (to) swings to the left in relation to Fig. 9, the tip of the claw (material) and the mold wheel (to) engage, and the claw ( b) and the latch are pushed to the right side in Fig. 9 via the moving axis (to) and moved to the right end of the oval holes (85a) and (86b) provided in the storage arm (to) (to). (to), the hook part (51b) of the latch engages with the lower part of the stopper to maintain the state shown in Fig. It is possible to rotate the mold wheel (to) at a predetermined position with respect to the energy storage arm @ (to), and after the discharge is completed, the mold wheel (to) rotates slightly in the direction of the arrow (B) in Fig. 1θ. Even if it moves and collides with the tip of the pawl (B), the pawl (goods) escapes, so there is no chance of damaging the tip of the pawl or the tooth tip of the mold wheel.

Therefore, the present invention has the effect of improving the reliability of an operating machine that requires a large amount of input energy, and that it can be manufactured economically.

[Brief explanation of drawings]

1 to 8 are explanatory diagrams showing the structure and operation of a conventional device, and FIG. 9 is an enlarged view of a claw portion showing an embodiment of the present invention, showing a state in which energy storage is completed. FIG. 10 is an energy release process state, and FIG. 11 is a sectional view taken along the line II in FIG. 10. In the figure, (c) is the mold wheel, (88a) is the protrusion of the mold wheel, (b) is the claw, (85a) and (86b) are the oval holes, the art hook latch,
H is a stopper, and 62 wheels are compression springs. In the drawings, the same reference numerals indicate the same or corresponding parts. Agent Haku Kuzuno - Figure 9 Figure 11

Claims (1)

[Claims] The closing spring is charged with the crank action, and the circuit breaker is turned on by releasing the stored energy of the closing spring.
In the mechanism that performs tripping, a pawl and a latch are rotatably supported by a moving shaft that passes through an oval hole formed in the accumulating arm, and a convex part that moves the latch clockwise is molded. A circuit breaker, characterized in that the circuit breaker is provided with a stopper protruding from the outer periphery of the vehicle, and further includes a stopper that engages the latch when the energy storage is completed, and a compression spring that biases the model vehicle and the latch in a counterclockwise direction. Rotating spring operating mechanism.