JP7051007B2 - Release from prison electromagnetic trip device - Google Patents

Description

The present invention relates to a release-type electromagnetic tripping device used for a circuit breaker such as an air circuit breaker.

Conventionally, as a tripping device arranged in a circuit breaker such as a circuit breaker, a release-type electromagnetic tripping device that operates when an abnormal current is detected is known. When an abnormal current is detected in the circuit breaker, the release-type electromagnetic tripping device is released from the initial state, so that the circuit breaker is turned off.

The release-type electromagnetic trip device is equipped with a reset button. The reset button protrudes from the release electromagnetic trip device when the release electromagnetic trip device goes from the initial state to the release state. When the reset button is pressed, the release-type electromagnetic trip device is reset, and the release-type electromagnetic trip device returns from the released state to the initial state.

Jitsukaihei 2-31044 Gazette

However, in the above-mentioned conventional technique, when the reset button is continuously pressed, the reset operation is prioritized. Therefore, if an abnormal current is detected while the reset button is being pressed, the release-type electromagnetic trip device does not shift to the release state and the circuit breaker does not turn off.

The present invention has been made in view of the above, and is a release-type electromagnetic tripping device capable of giving priority to release over reset operation and turning off the circuit breaker in a state where the reset button is continuously pressed. The purpose is to obtain.

In order to solve the above-mentioned problems and achieve the object, the release-type electromagnetic trip device of the present invention is a release-type electromagnetic trip device arranged in a circuit breaker, and is a frame, a lever, and a first latch. , A reset button unit, a second latch, and an electromagnetic solenoid. The lever is rotatably supported by the frame and urged in a direction that acts on the circuit breaker opening / closing mechanism. The first latch is rotatably supported by the frame and urged in a direction that engages the lever. The reset button unit is movably supported by the frame and urged in the first direction, which is the direction protruding from the frame. The second latch is urged in a direction in which it engages with the lever while being rotatably supported by the reset button unit, and the reset button unit protrudes from the frame in the second direction opposite to the first direction. When pressed, the lever is rotated to engage the lever with the first latch. The electromagnetic solenoid rotates the first latch and the second latch in the direction opposite to the urged direction by the protrusion of the plunger in the engaged state in which the lever is engaged with the first latch and the second latch. By doing so, the engaged state is released.

According to the present invention, when the reset button is continuously pressed, the release is prioritized over the reset operation, and the circuit breaker can be turned off.

The figure which shows the structural example of the circuit breaker which concerns on Embodiment 1 of this invention. The figure for demonstrating the release from prison electromagnetic trip device which concerns on Embodiment 1. Side view of the release-type electromagnetic tripping device according to the first embodiment when viewed from the Y-axis positive direction. Side view of the release-type electromagnetic tripping device according to the first embodiment when viewed from the negative direction of the Y-axis. A side view showing a state in which one side plate of the frame in the release-type electromagnetic tripping device according to the first embodiment is removed. Side view of the initial state of the release-type electromagnetic tripping device according to the first embodiment when viewed from the positive direction of the Y-axis. A side view of the operating state of the release-type electromagnetic tripping device according to the first embodiment when viewed from the positive direction of the Y-axis. A side view of the state in which the release-type electromagnetic tripping device according to the first embodiment is in the middle of operation when viewed from the positive direction of the Y-axis. Side view of the state where the operation of the release-type electromagnetic tripping device according to the first embodiment is completed when viewed from the positive direction of the Y-axis. Side view of the state where the operation of the release-type electromagnetic tripping device according to the first embodiment is completed when viewed from the negative direction of the Y-axis. Side view of the state in the middle of resetting the release-type electromagnetic tripping device according to the first embodiment when viewed from the positive direction of the Y-axis. Side view of the state in the middle of resetting the release-type electromagnetic tripping device according to the first embodiment when viewed from the negative direction of the Y-axis. A side view of the release-type electromagnetic tripping device according to the first embodiment when the reset is completed when viewed from the positive direction of the Y-axis. A side view of the state in which the reset of the release-type electromagnetic tripping device according to the first embodiment is completed when viewed from the negative direction of the Y-axis. A side view of a state in which the electromagnetic solenoid is operated while the reset button unit of the release-type electromagnetic tripping device according to the first embodiment is continuously pressed, as viewed from the positive direction of the Y-axis. A side view of a state in which the operation is completed with the reset button unit of the release-type electromagnetic tripping device according to the first embodiment viewed from the positive direction of the Y-axis.

Hereinafter, the release-type electromagnetic tripping device according to the embodiment of the present invention will be described in detail with reference to the drawings. The present invention is not limited to this embodiment.

Embodiment 1.
FIG. 1 is a diagram showing a configuration example of a circuit breaker according to the first embodiment of the present invention. FIG. 2 is a diagram for explaining the release-type electromagnetic tripping device according to the first embodiment. The left-right direction in FIGS. 1 and 2 is defined as the X-axis direction, the vertical direction in FIGS. 1 and 2 is defined as the Z-axis direction, and the direction orthogonal to the X-axis direction and the Z-axis direction is defined as the Y-axis direction. Further, in other drawings and the like, the XYZ coordinates corresponding to the XYZ coordinate systems shown in FIGS. 1 and 2 are shown.

As shown in FIG. 1, the circuit breaker 100 includes a fixed contact 110, a movable contact 111, and an opening / closing mechanism 112 that brings the movable contact 111 into contact with the fixed contact 110 and separates the movable contact 111 from the fixed contact 110. .. The circuit breaker 100 is turned on when the opening / closing mechanism 112 brings the movable contact 111 into contact with the fixed contact 110. The circuit breaker 100 is turned off when the opening / closing mechanism 112 separates the movable contact 111 from the fixed contact 110. The circuit breaker 100 is, for example, an air circuit breaker. A release-type electromagnetic trip device 1 can be arranged on the circuit breaker 100.

As shown in FIG. 2, the release-type electromagnetic tripping device 1 includes a frame 10, a lever 20 rotatably supported by the frame 10 and urged in a direction acting on the opening / closing mechanism 112 of the circuit breaker 100, and the frame 10. It is provided with a first latch 30 that is rotatably supported and urged in a direction that engages with the lever 20.

Further, the release type electromagnetic tripping device 1 is movably supported by the frame 10 and urged in the positive direction of the X-axis, and the lever 20 is rotatably supported by the reset button unit 40. It is provided with a second latch 50 that is urged in a direction of engaging with. The X-axis positive direction is an example of the first direction in which the reset button unit 40 protrudes from the frame 10.

A reset button 41 is provided at the tip of the reset button unit 40. The second latch 50 rotates the lever 20 and engages the lever 20 with the first latch 30 when the reset button unit 40 is pushed in the negative direction of the X-axis from the state of protruding from the frame 10. The negative X-axis direction is an example of the second direction, and is the direction opposite to the first direction, which is the direction protruding from the frame 10.

Further, the release-type electromagnetic tripping device 1 includes an electromagnetic solenoid 60 having a plunger 61 and projecting the plunger 61 when energized. The electromagnetic solenoid 60 rotates the first latch 30 and the second latch 50 by the protrusion of the plunger 61 to release the engagement between the first latch 30 and the second latch 50 and the lever 20.

When the engagement between the first latch 30 and the lever 20 is released, the lever 20 rotates in the direction of acting on the opening / closing mechanism 112 of the circuit breaker 100, and the circuit breaker 100 is turned off. Further, since the reset button unit 40 is urged in the positive direction of the X axis, the engagement between the second latch 50 and the lever 20 is released, so that the reset button unit 40 moves in the positive direction of the X axis and is released from the electromagnetic desorption type. It protrudes from the device 1.

After that, when the reset button unit 40 is pushed in the negative direction of the X-axis, the second latch 50 supported by the reset button unit 40 rotates the lever 20 to engage the lever 20 with the first latch 30. Then, in a state where the reset button unit 40 is continuously pushed in the negative direction of the X-axis, the first latch 30 and the second latch 50 can be rotated by the protrusion of the plunger 61 in the direction of disengaging the engagement with the lever 20. In position.

Therefore, in a state where the reset button unit 40 is continuously pushed in the negative direction of the X-axis, the engagement between the first latch 30 and the second latch 50 and the lever 20 is released by the protrusion of the plunger 61, and the lever 20 rotates. , The circuit breaker 100 is turned off. As described above, in the release-type electromagnetic trip device 1, the release from the electromagnetic solenoid 60 can be prioritized and the circuit breaker 100 can be turned off while the reset button 41 is continuously pressed.

Hereinafter, the configuration of the release-type electromagnetic tripping device 1 will be specifically described. FIG. 3 is a side view of the release-type electromagnetic tripping device according to the first embodiment when viewed from the Y-axis positive direction. FIG. 4 is a side view of the release-type electromagnetic tripping device according to the first embodiment when viewed from the negative direction of the Y-axis. FIG. 5 is a side view showing a state in which one side plate of the frame in the release-type electromagnetic tripping device according to the first embodiment is removed.

As shown in FIGS. 3 and 4, the frame 10 includes two side plates 11 and 12 facing each other in the Y-axis direction, and connecting pins 13 and 14 connecting the two side plates 11 and 12. As shown in FIG. 3, the side plate 11 is provided with a guide groove 11a for guiding the movement of the reset button unit 40 in the X-axis direction. Further, as shown in FIG. 4, the side plate 12 is provided with a guide groove 12a for guiding the movement of the reset button unit 40 in the X-axis direction.

Further, shafts 15 and 16 extending in the Y-axis direction are attached to the side plates 11 and 12, respectively. The lever 20 is rotatably supported by the side plates 11 and 12 via the shaft 15 about the axis of the shaft 15. The first latch 30 is rotatably supported by the side plates 11 and 12 via the shaft 16 about the axis of the shaft 16.

As shown in FIG. 4, the release-type electromagnetic trip device 1 includes a tension spring 81 bridged between the frame 10 and the base end portion of the reset button unit 40, and the reset button unit 40 is X-axis by the tension spring 81. Being urged in the positive direction.

Further, as shown in FIG. 5, the release-type electromagnetic tripping device 1 has a tension spring 82 having one end attached to the frame 10 and the other end attached to the lever 20, and one end attached to the frame 10 and the other end. It includes a tension spring 83 attached to the first latch 30. Further, the release-type electromagnetic tripping device 1 includes a tension spring 84 having one end attached to the reset button unit 40 and the other end attached to the second latch 50.

The tension spring 82 urges the lever 20 in the counterclockwise direction. The tension spring 83 urges the first latch 30 in the counterclockwise direction. The tension spring 84 urges the second latch 50 in the counterclockwise direction. Here, the counterclockwise direction is the counterclockwise direction in FIG. 5, and is the counterclockwise direction when the release type electromagnetic trip device 1 is viewed from the positive direction of the Y axis. In the following, the counterclockwise direction is the direction when the release type electromagnetic trip device 1 is viewed from the positive direction of the Y axis, and the clockwise direction is the direction when the release type electromagnetic trip device 1 is viewed from the positive direction of the Y axis. It will be described as the direction in.

The reset button unit 40 includes a reset button 41 and an extension portion 42 to which the reset button 41 is attached to a tip portion and extends in the X-axis direction. As shown in FIG. 3, the stretched portion 42 is formed with a protruding portion 43 that protrudes in the positive direction of the Y-axis and is inserted into the guide groove 11a. Further, as shown in FIG. 4, the stretched portion 42 is formed with a protruding portion 44 that protrudes in the negative direction of the Y-axis and is inserted into the guide groove 12a. The other end of the tension spring 81 is attached to the base end portion of the stretched portion 42. The reset button unit 40 protrudes in the positive direction of the X-axis when the circuit breaker 100 is turned off, and is manually pushed in the negative direction of the X-axis to reset the release-type electromagnetic trip device 1.

As shown in FIG. 5, a shaft 45 extending in the Y-axis direction is attached to the extending portion 42 of the reset button unit 40. The second latch 50 is rotatably supported by the reset button unit 40 via the shaft 45 about the axis of the shaft 45.

Next, the configurations of the lever 20, the first latch 30, the reset button unit 40, and the second latch 50 will be described more specifically. FIG. 6 is a side view when the initial state of the release-type electromagnetic tripping device according to the first embodiment is viewed from the positive direction of the Y-axis, and FIG. 6 shows the side plates 11 and the tension springs 81 and 82 for convenience of explanation. , 83, 84 are not shown.

As shown in FIG. 6, the lever 20 is a connecting plate 23 that connects the first side plate 21 and the second side plate 22 facing each other and the ends of the first side plate 21 and the second side plate 22 in the positive direction of the X axis. And have. The first side plate 21 and the second side plate 22 are rotatably supported by the frame 10 via the shaft 15 about the axis of the shaft 15.

A first lever engaging portion 21a that engages with the first latch 30 is formed at one end of the first side plate 21. Further, a second lever engaging portion 22a and a third lever engaging portion 22b that engage with the second latch 50 are formed at one end of the second side plate 22.

The first latch 30 is formed with a tripping engaging portion 31 that engages with the first lever engaging portion 21a of the lever 20 at one end, and is attached to a push plate 62 fixed to the tip of the plunger 61 at the other end. Opposing protrusions 32 are formed.

The second latch 50 has a reset engaging portion 51 formed at one end thereof to engage with the second lever engaging portion 22a and the third lever engaging portion 22b of the lever 20, and is fixed to the tip of the plunger 61 at the other end. A protruding portion 52 facing the pushed plate 62 is formed.

Further, the release-type electromagnetic tripping device 1 has a transmission mechanism 70 rotatably supported by the frame 10 via a shaft 18 extending in the Y-axis direction, and transfers the rotational force of the lever 20 to the push plate 62. Has the function of transmitting.

Next, the operation of the release-type electromagnetic tripping device 1 will be described. First, the tripping operation of the release-type electromagnetic tripping device 1 will be described. FIG. 7 is a side view of the operating state of the release-type electromagnetic tripping device according to the first embodiment when viewed from the positive direction of the Y-axis. FIG. 8 is a side view of the state in which the operation of the release-type electromagnetic tripping device according to the first embodiment is in progress, as viewed from the positive direction of the Y-axis. FIG. 9 is a side view of the state in which the operation of the release-type electromagnetic tripping device according to the first embodiment is completed when viewed from the positive direction of the Y-axis. FIG. 10 is a side view of the state in which the operation of the release-type electromagnetic tripping device according to the first embodiment is completed when viewed from the negative direction of the Y-axis. In FIGS. 7 to 10, the side plate 11 and the tension springs 81, 82, 83, 84 are not shown for convenience of explanation.

When the release type electromagnetic tripping device 1 is in the initial state, as shown in FIG. 6, the tripping engaging portion 31 of the first latch 30 is engaged with the first lever engaging portion 21a of the lever 20. , The rotation of the lever 20 in the counterclockwise direction is suppressed. Further, since the reset engaging portion 51 of the second latch 50 is engaged with the second lever engaging portion 22a of the lever 20, the movement of the reset button unit 40 in the positive direction of the X axis is suppressed.

When an abnormal current is detected by the circuit breaker 100, the electromagnetic solenoid 60 is energized, an exciting current is supplied to a coil (not shown), and a magnetic flux is generated from the coil. As a result, as shown in FIG. 7, the plunger 61 protrudes.

When the plunger 61 protrudes, the protruding portion 32 of the first latch 30 is pushed by the push plate 62 fixed to the tip end portion of the plunger 61. Therefore, as shown in FIG. 7, the first latch 30 watches around the shaft 16. Rotate in the clockwise direction. Further, since the protruding portion 52 of the second latch 50 is pushed by the push plate 62, the second latch 50 rotates in the clockwise direction about the shaft 45 as shown in FIG. 7.

Therefore, the engagement between the detachable engaging portion 31 of the first latch 30 and the first lever engaging portion 21a of the lever 20 is released, and the reset engaging portion 51 of the second latch 50 and the second lever of the lever 20 are engaged. The engagement with the joint portion 22a is released. When the detached engaging portion 31 of the first latch 30 and the first lever engaging portion 21a of the lever 20 are disengaged, the lever 20 is centered on the shaft 15 as shown in FIGS. 8 and 9. Rotate counterclockwise. Therefore, the lever 20 acts on the latch of the opening / closing mechanism 112, and the opening / closing mechanism 112 separates the movable contact 111 from the fixed contact 110.

Further, the protruding portion 24 of the lever 20 comes into contact with one end portion 71 of the transmission mechanism 70 by rotating the lever 20 in the counterclockwise direction, and the one end portion 71 of the transmission mechanism 70 is rotated clockwise with the shaft 18 as the axis. Rotate in the direction. As a result, as shown in FIG. 9, the other end 72 of the transmission mechanism 70 rotates in the clockwise direction, and the other end 72 of the transmission mechanism 70 pushes the push plate 62. Therefore, the plunger 61 is returned to the electromagnetic solenoid 60, and the electromagnetic solenoid 60 returns to the initial state.

Further, since the engagement between the reset engaging portion 51 and the second lever engaging portion 22a is released, the reset button unit 40 is provided with the tension spring 81 shown in FIG. 4 as shown in FIGS. 9 and 10. It moves in the positive direction of the X-axis and protrudes from the release-type electromagnetic tripping device 1. At this time, when the protruding portions 43, 44 of the reset button unit 40 come into contact with the ends of the guide grooves 11a, 12a, the movement of the reset button unit 40 in the positive direction of the X axis is restricted.

Next, the reset of the release-type electromagnetic trip device 1 will be described. FIG. 11 is a side view of the state in the middle of resetting the release-type electromagnetic tripping device according to the first embodiment when viewed from the positive direction of the Y-axis. FIG. 12 is a side view of the state in the middle of resetting the release-type electromagnetic tripping device according to the first embodiment when viewed from the negative direction of the Y-axis. FIG. 13 is a side view of the state in which the reset of the release-type electromagnetic tripping device according to the first embodiment is completed when viewed from the positive direction of the Y-axis. FIG. 14 is a side view of the state in which the reset of the release-type electromagnetic tripping device according to the first embodiment is completed when viewed from the negative direction of the Y-axis. In FIGS. 11 to 14, the side plate 11 and the tension springs 81, 82, 83, 84 are not shown for convenience of explanation.

The release-type electromagnetic tripping device 1 is reset by manually pushing the reset button unit 40 in the negative direction of the X-axis from the states shown in FIGS. 9 and 10. When the reset button unit 40 moves in the negative X-axis direction, as shown in FIGS. 11 and 12, the reset engagement portion 51 of the second latch 50 rotatably supported by the reset button unit 40 is the third lever 20. Engage with the lever engaging portion 22b.

Since the reset engaging portion 51 of the second latch 50 moves in the negative direction of the X axis as the reset button unit 40 moves in the negative direction of the X axis, the reset engaging portion 51 moves in the negative direction of the X axis. Along with this, the lever 20 rotates in the clockwise direction. Then, as shown in FIGS. 13 and 14, the lever 20 moves to the initial position where the first lever engaging portion 21a of the lever 20 engages with the tripping engaging portion 31 of the first latch 30, and is released. The electromagnetic trip device 1 is reset. In such a reset state, the engagement between the third lever engaging portion 22b of the lever 20 and the reset engaging portion 51 of the second latch 50 continues.

When the reset button unit 40 is released from the pushed state, the reset button unit 40 and the second latch 50 try to return in the positive direction of the X-axis by the spring force of the tension spring 81 shown in FIG. 4, but FIG. As shown in the above, the second latch 50 engages with the lever 20 whose rotation is restricted by the engagement with the first latch 30. Therefore, the reset button unit 40 and the second latch 50 are restricted from moving in the positive direction of the X-axis and are maintained in the initial positions.

Next, even after the release-type electromagnetic trip device 1 is reset, the reset button unit 40 is in a state of being continuously pressed, and when the electromagnetic solenoid 60 is energized in such a state, the release-type electromagnetic trip device 1 The operation will be described. FIG. 15 is a side view of a state in which the electromagnetic solenoid is operated while the reset button unit of the release-type electromagnetic tripping device according to the first embodiment is continuously pressed, as viewed from the positive direction of the Y-axis. FIG. 16 is a side view of the state in which the operation is completed while the reset button unit of the release-type electromagnetic tripping device according to the first embodiment is continuously pressed, as viewed from the positive direction of the Y-axis. Note that, in FIGS. 15 and 16, for convenience of explanation, the side plate 11 and the tension springs 81, 82, 83, 84 are not shown.

When an abnormal current is detected in the circuit breaker 100, the electromagnetic solenoid 60 is energized. In the release-type electromagnetic tripping device 1, as shown in FIG. 15, when the electromagnetic solenoid 60 is energized from the state where the reset button unit 40 is continuously pressed, the plunger 61 of the electromagnetic solenoid 60 protrudes.

When the plunger 61 protrudes, the protruding portion 32 of the first latch 30 is pushed by the push plate 62 fixed to the tip end portion of the plunger 61, so that the first latch 30 rotates clockwise around the shaft 16. Further, since the protruding portion 52 of the second latch 50 is pushed by the push plate 62, the second latch 50 rotates in the clockwise direction about the shaft 45.

Therefore, the engagement between the detachable engaging portion 31 of the first latch 30 and the first lever engaging portion 21a of the lever 20 is released, and the reset engaging portion 51 of the second latch 50 and the third lever of the lever 20 are engaged. The engagement with the joint portion 22b is released. As a result, as shown in FIG. 16, the lever 20 rotates in the counterclockwise direction about the shaft 15, so that the lever 20 acts on the latch of the opening / closing mechanism 112, and the circuit breaker 100 is turned off.

In this way, the release-type electromagnetic trip device 1 can give priority to release and turn off the circuit breaker 100 even when the reset button unit 40 is continuously pressed. Since the lever 20 and the second latch 50 are not engaged in the state shown in FIG. 16, when the reset button unit 40 is stopped pressed, the reset button is pressed by the spring force of the tension spring 81 shown in FIG. The unit 40 moves in the positive direction of the X-axis. As a result, the release-type electromagnetic trip device 1 is in the state shown in FIGS. 9 and 10.

As described above, the release-type electromagnetic trip device 1 according to the first embodiment is a release-type electromagnetic trip device arranged in the circuit breaker 100. The release-type electromagnetic tripping device 1 includes a frame 10, a lever 20, a first latch 30, a reset button unit 40, a second latch 50, and an electromagnetic solenoid 60. The lever 20 is rotatably supported by the frame 10 and urged in a direction acting on the opening / closing mechanism 112 of the circuit breaker 100. The first latch 30 is rotatably supported by the frame 10 and urged in a direction that engages with the lever 20. The reset button unit 40 is movably supported by the frame 10 and is urged in the positive direction of the X-axis. The second latch 50 is rotatably supported by the reset button unit 40 and is urged in a direction that engages with the lever 20. Further, when the reset button unit 40 is pushed in the negative direction of the X-axis from the state where the reset button unit 40 protrudes from the frame 10, the second latch 50 rotates the lever 20 and engages the lever 20 with the first latch 30. The electromagnetic solenoid 60 engages by rotating the first latch 30 and the second latch 50 by the protrusion of the plunger 61 in the engaged state in which the lever 20 is engaged with the first latch 30 and the second latch 50. Release the combined state. As a result, the release-type electromagnetic trip device 1 can give priority to release over the reset operation in a state where the reset button 41 is continuously pressed, and can turn off the circuit breaker 100.

Further, the lever 20 has a first lever engaging portion 21a that engages with the first latch 30, a second lever engaging portion 22a that engages with the second latch 50, and a third lever that engages with the second latch 50. A lever engaging portion 22b is provided. The first latch 30 includes a tripping engaging portion 31 that engages with the first lever engaging portion 21a. The second latch 50 includes a reset engaging portion 51 that engages with the second lever engaging portion 22a and the third lever engaging portion 22b. By engaging the first lever engaging portion 21a with the tripping engaging portion 31 of the first latch 30, the rotation of the first lever engaging portion 21a in the direction acting on the opening / closing mechanism 112 is suppressed. The engagement of the second lever engaging portion 22a with the reset engaging portion 51 of the second latch 50 suppresses the movement of the reset button unit 40 in the positive direction of the X-axis. When the reset button unit 40 is pushed in the negative direction of the X-axis from the state of protruding from the frame 10, the lever 20 is moved by the engagement between the third lever engaging portion 22b and the reset engaging portion 51 of the second latch 50. Rotate and engage the lever 20 with the first latch 30. As described above, the release-type electromagnetic tripping device 1 has the second lever engaging portion 22a and the third lever engaging portion 22b that engage with the second latch 50 on the lever 20, so that the reset operation can be performed relatively easily. Release can be prioritized over.

The lever 20 connects the first side plate 21 on which the second lever engaging portion 22a is formed, the second side plate 22 on which the third lever engaging portion 22b is formed, and the first side plate 21 and the second side plate 22. The connecting plate 23 is provided. This makes it possible to easily arrange the lever 20, the first latch 30, and the second latch 50.

The configuration shown in the above-described embodiment shows an example of the content of the present invention, can be combined with another known technique, and is one of the configurations as long as it does not deviate from the gist of the present invention. It is also possible to omit or change the part.

1 Solenoid tripping device, 10 frames, 11, 12 side plates, 11a, 12a guide grooves, 13, 14 connecting pins, 15, 16, 18 shafts, 20 levers, 21 1st side plates, 21a 1st lever engaging parts , 22 2nd side plate, 22a 2nd lever engaging part, 22b 3rd lever engaging part, 23 connecting plate, 30 1st latch, 31 tripping engaging part, 32, 43, 44, 52 protruding part, 40 reset Button unit, 41 reset button, 42 extension part, 45 shaft, 50 second latch, 51 reset engagement part, 60 electromagnetic solenoid, 61 plunger, 62 push plate, 70 transmission mechanism, 71 one end, 72 other end, 81 , 82,83,84 Tension spring, 100 circuit breaker, 110 fixed contact, 111 movable contact, 112 opening / closing mechanism.

Claims (3)

It is a release-type electromagnetic trip device placed in a circuit breaker.
With the frame
A lever that is rotatably supported by the frame and urged in a direction that acts on the opening / closing mechanism of the circuit breaker.
A first latch that is rotatably supported by the frame and urged in a direction that engages with the lever.
A reset button unit that is movably supported by the frame and urged in the first direction, which is the direction protruding from the frame.
While being rotatably supported by the reset button unit, it is urged in a direction in which it engages with the lever, and the reset button unit protrudes from the frame in a second direction opposite to the first direction. A second latch that rotates the lever and engages the lever with the first latch when pressed.
In the engaged state in which the lever is engaged with the first latch and the second latch, the first latch and the second latch are urged in the direction opposite to the urged direction by the protrusion of the plunger. A release-type electromagnetic tripping device comprising an electromagnetic solenoid that releases the engaged state by rotation. The lever
A first lever engaging portion that engages with the first latch, a second lever engaging portion that engages with the second latch, and a third lever engaging portion that engages with the second latch are provided. ,
The first latch is
An engaging portion that engages with the first lever engaging portion is provided.
The second latch is
The second lever engaging portion and the engaging portion that engages with the third lever engaging portion are provided.
By engaging the first lever engaging portion with the engaging portion of the first latch, the rotation of the lever in the direction acting on the opening / closing mechanism is suppressed.
The engagement between the second lever engaging portion and the engaging portion of the second latch suppresses the movement of the reset button unit in the first direction.
When the reset button unit is pushed in the second direction from the state of protruding from the frame, the lever is rotated by the engagement between the third lever engaging portion and the engaging portion of the second latch. The release-type electromagnetic trip device according to claim 1, wherein the lever is engaged with the first latch. The lever
The first side plate on which the first lever engaging portion is formed, the second side plate on which the second lever engaging portion and the third lever engaging portion are formed, the first side plate, and the second side plate. The release-type electromagnetic tripping device according to claim 2, further comprising a connecting plate for connecting the two.

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