JP2005209510A - Circuit breaker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a circuit breaker which can lock a handle at an ON position automatically only by making the handle rotate to the ON position. <P>SOLUTION: The circuit breaker includes a locking part 12 formed on the body 10 of the handle 2, a handle locking member 15 locked in the state that the locking part 12 can override and the locking part 12 overrides when the handle 2 is disposed in the form opposed to the body 10 and urged in the direction of the body 10 and rotated from an OFF position to the ON position, a releasing member 16 disposed operably out of a device body 1 to drive the handle locking member 15 in the direction for releasing the locking state of the locking part 12 against the urging force of the handle locking member 15, and a drive part 50 provided in a tripping member 39 to drive the handle locking member 15 in the direction of releasing the locking state with the locking part 12 against the urging force of the handle locking member 15. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a circuit breaker such as a breaker with a handle lock mechanism that can lock a turning operation of a handle in an off direction in an on state, for example.

  As a first conventional example, there is one shown in Patent Document 1. In this case, the handle cannot be rotated in the off direction by covering the handle in the on state with a handle lock. Moreover, this thing can also be made not to be able to rotate a handle | steering-wheel by turning a handle | steering-wheel lock on the handle | steering-wheel in an OFF state.

As a second conventional example, there is one shown in Patent Document 2. In this product, after the handle is moved to the on or off position, the operation switch is operated and a part of the operation switch is engaged with the end of the handle so that the handle cannot be turned to the off or on position. It is a thing.
Japanese Patent Laid-Open No. 7-220609 JP 2001-110294 A

  In the first conventional example, since the handle lock itself is detachable from the handle, the handle lock may be lost.

  Further, in the first conventional example and the second conventional example, when the handle is locked in the on position, it is necessary to operate the handle to the on position and put the handle lock or operate the operation switch in that state. It was. Therefore, conventionally, in the case of on-locking, after the handle is rotated, the handle lock member is operated and locked, which is troublesome.

  The present invention has been invented in view of the above problems, and an object thereof is to provide a circuit breaker capable of automatically locking a handle to an on position by simply rotating the handle to an on position. It is in.

The circuit breaker of the present invention has a container, a handle having a main body rotatably held in the container, a handle having a handle that is connected to the main body and protrudes from the surface of the container, and the handle. A latch member connected through a link, a tripping member having a latch portion for locking a part of the latch member and supported in the body, and a part of the latch member on the tripping member. A movable body having a contact that is opened and closed by a turning operation of the handle in the latched state, and a drive in a direction to release the latch member from the latched state when an abnormal current flows through the contact in a closed state of the contact And an urging means for urging the movable body in a contact opening direction when the latched state of the latch member is released, and the handle is urged by a spring in the off direction, Abnormal current at the contact When flowing, the tripping member releases the latched state of the latch member to forcibly open the contact, and the handle is positioned at a neutral position between on and off by the urging force of the handle in the off direction. In the circuit breaker
A locking portion formed on the main body of the handle;
The handle is disposed so as to face the main body and is biased in the direction of the main body of the handle so that when the handle is turned from the off position to the on position, the locking portion can be overcome, and A handle locking member that locks when the handle is rotated from the on position to the off position in a state where the locking portion has been overcome;
A release member that is arranged to be operable from outside the container body and that drives the handle locking member in a direction to release the locking state of the locking portion against its urging force;
A drive unit that is provided on the tripping member and drives the handle locking member in a direction to release the locked state with the locking unit against the biasing force when driven by the abnormal current detection device; It is characterized by having.

  In the above-described configuration, the locking portion is formed to project from the main body, and the handle locking member has a tip that can contact only the locking portion of the main body when the handle is rotated. To lock the container.

Another circuit breaker of the present invention includes a container body, a handle having a main body rotatably held in the container body, a handle having a handle that is connected to the main body and protrudes from the surface of the container body, A latch member connected to the handle via a link, a tripping member having a latch portion for locking a part of the latch member and supported in the body, and a latch member attached to the tripping member. A movable body having a contact that is opened and closed by a turning operation of the handle in a state where the portion is latched, and a direction in which the latch member is released from the latched state when an abnormal current flows through the contact when the contact is closed And an urging means for urging the movable body in the contact opening direction when the latched state of the latch member is released, and the handle is urged by a spring in the off direction. And the contact is abnormal When a flow flows, the tripping member releases the latched state of the latch member to forcibly open the contact, and the handle is positioned at a neutral position between on and off by the urging force of the handle in the off direction. In the circuit breaker designed to let
A locking portion formed on the main body of the handle;
The handle is disposed so as to face the main body and is biased in the direction of the main body of the handle so that when the handle is turned from the off position to the on position, the locking portion can be overcome, and A handle locking member that locks when the handle is rotated from the on position to the off position in a state where the locking portion has been overcome;
A release member that is arranged to be operable from outside the container body and that drives the handle locking member in a direction to release the locking state of the locking portion against its urging force;
The release member is rotatably supported by the container body, and the release member is connected to one side of the rotation fulcrum, and the movable body is connected to the other side of the rotation fulcrum. And a rotating body that drives the handle locking member in the direction of releasing the locking state with the locking portion against the biasing force via the releasing member.

In the above configuration, the release member is disposed so as to be movable in the vertical direction of the container while being urged so as to protrude outward from the upper surface of the container, and the release member is opposed to the urging force. The handle locking member is driven in a direction away from the main body of the handle when moved into the body, and the release member and the rotating body are connected by a connecting body,
One of the release member and the rotating body is formed with a loose insertion hole for loosely inserting the coupling body to a position where the rotating body does not rotate when the release member is pressed in the body direction.

  According to the circuit breaker of the present invention, since the engaging portion gets over the handle engaging portion only by rotating the handle from the off position to the on position, the handle can be locked in the on position with good operability. The lock can be released by releasing the locking state of the locking portion from the tip of the handle locking member via the release member and rotating the handle to the off position in this state. Furthermore, when the abnormal current flows and the contact is forcibly opened, the handle locking member moves in a direction to release the locking state of the locking portion by the drive unit, so the handle moves to the on / off neutral position, Trip status can be displayed.

  Since the handle locking member is locked to the container at a position where it can contact only the locking portion of the main body, when the handle is rotated, the tip of the handle locking member does not touch any part of the handle except the locking portion. Therefore, the handle can be rotated smoothly.

  In addition, when the contact is in the open state, the handle locking member is moved in a direction to release the locking state of the locking portion by the rotating body, so that the handle is turned to the on / off neutral position when a trip occurs when an abnormal current is detected. Move and display trip status.

Since the release member is disposed so as to be movable in the vertical direction of the container body, the handle locking member can be moved and the locked state of the locking portion can be released simply by pressing the release member against the biasing force against the urging force. .
Since the release member and the rotating body are connected by the connecting body through the loose insertion hole, the movable body, for example, the crossbar is not driven even if the release member is pressed toward the body, so the crossbar is rotated. The handle locking member can be easily driven without applying a load.

  A first embodiment of the present invention will be described with reference to FIGS. That is, the circuit breaker includes a body 1, a handle 2, an opening / closing / trip mechanism 3, a handle locking member 15, and a release member 16.

  The body 1 has terminals 4 and 5 at both ends, a movable contact 8 having a fixed contact 6 connected to the terminal 5 between the internal terminals 4 and 5, and a movable contact 7 contacting and separating from the fixed contact 6. A flexible electric wire 9 connected to the movable contact 8, an abnormal current detecting device 20 for detecting an excessive current, etc. are arranged, and the flexible electric wire 9 is connected to the terminal 4 via the current detecting means 20 etc. These constitute an internal electric circuit.

  The handle 2 has a main body 10 that is rotatably held in the body 1, and has a handle 11 that is connected to the main body 10 and protrudes from the upper surface through a handle hole 21 of the body 1. A locking portion 12 is formed on the outer peripheral surface of the main body 10. In the embodiment, the center of the main body 10 is pivotally supported on the container body 1 by the shaft 13 and is urged in the off direction by the handle return spring 14. The locking portion 12 is formed so as to project at a predetermined position on the outer peripheral surface of the main body 10, and when the handle 2 is rotated from the off position to the on position as will be described later, the handle locking member 15 is pushed to move the handle locking member. It will overcome 15 tips.

  The opening / closing / tripping mechanism 3 includes a handle 2, a latch member 35 connected to the handle 2 via a link 36, and a latch portion 37 for locking a part of the latch member 35. A tripping member 39 rotatably supported by a shaft 38, and a movable contact 7 that is opened and closed by a turning operation of the handle 2 in a state where a part of the latch member 35 is latched by the tripping member 39. A movable body having, for example, a crossbar 40, and an abnormal current detection device 20 that drives the tripping member 39 in a direction to release the latch member 35 from the latched state when an abnormal current flows through the movable contact 7 in a closed state of the movable contact 7. The biasing means 41 includes a biasing means 41 using, for example, a spring that biases the cross bar 40 in the contact opening direction when the latching state of the latch member 35 is released. With this configuration, when an abnormal current flows through the movable contact 7, the latched state of the latch member 35 is released to forcibly open the movable contact 7, and the handle 2 connected to the latch member 35 and the link 36 in the off direction. The handle 2 can be positioned in a neutral position between on and off by the biasing force.

  In the embodiment, the cross bar 40 is rotatable about a shaft 40 a, holds the rear end portion of the movable contact 8 provided with the movable contact 7 at the tip, and is directed toward the fixed contact 6 by the contact pressure spring 42. Is energized. Therefore, when the handle 2 is turned on and off, the movable contact 7 is driven to open and close with respect to the fixed contact 6, and when an abnormal current flows when the movable contact 7 and the fixed contact 6 are closed, the movable contact 8 is forcibly opened as described above. To do.

  The handle locking member 15 is disposed so as to be able to advance and retreat with respect to the main body 10 with the tip opposed to the main body 10, and is urged in a direction approaching the main body 10 so as to be locked at the on position of the handle 2. 12 to prevent the handle 2 from turning in the off direction. In the embodiment, a guide recess 22 is provided in the container body 1 in a direction perpendicular to the shaft 13, the handle locking member 15 is movably accommodated in the guide recess 22, and the rear end of the handle locking member 15 A spring 23 using a compression coil spring is interposed between the inner end of the guide recess 22 and the tip of the handle locking member 15 is biased in a direction approaching the main body 10. In this case, when the handle 2 is rotated, the stopper 1 is attached to the container body 1 so that the tip of the handle locking member 15 is locked to the container body 1 at a position where only the locking part 12 of the main body 10 can come into contact. 24 is provided, and the engaging portion 25 provided on the distal end side portion of the handle locking member 15 is locked.

  Here, when the handle 2 is turned from the off position to the on position, the latching portion 12 pushes the handle latching member 15 to get over the tip of the handle latching member 15. The tip of the stop member 15 is tapered, and the tip surface is formed on an inclined surface 26 facing one of the side surfaces gradually toward the locking portion 12 at the off position of the handle 2, and the handle 2 is turned on from the off position. When rotating to the position, the locking portion 12 comes into contact with the inclined surface 26 and moves back over the handle locking member 15 against the spring 23.

  The release member 16 is disposed on the body 1 so as to be operable from outside the body 1, and drives the handle locking member 15 in a direction away from the locking portion 12 of the main body 10 against its urging force. In the embodiment, a release member storage portion 27 opened on the upper surface of the container body 1 is provided adjacent to the handle 2 of the container body 1, and the release member 16 is stored in the release member 16 so as to be movable up and down. The release member 16 is urged by a spring 28 in the storage portion 27 so as to protrude outward from the upper surface of the container 1 in the handle protruding direction. The lower end surface 29 is tapered and faces the tapered receiving portion 30 provided at the rear end portion of the handle locking member 15. When the upper end portion of the release member 16 is pushed against the spring 28, the lower end surface 29 is lowered. The receiving portion 30 is pushed by the end face 29, the handle locking member 15 is retracted against the spring 23, and is separated from the locking portion 12.

  The drive unit 50 is provided on the tripping member 39 and faces the second receiving unit 51 provided at the rear end of the handle locking member 15. When the tripping member 39 is driven by the abnormal current detection device 20, the second receiving portion 51 is pushed and the handle locking member 15 is driven in a direction to release the locking state with the locking portion 17 against the biasing force. To do.

  FIG. 1 shows a state in which the handle 2 is in the off position, and the movable contact 8 is separated from the fixed contact 6. At this time, the handle locking member 15 advances to a state in which the tip approaches the main body 10 by the spring 23 and is supported by the stopper portion 24. At this time, the second receiving portion 51 approaches the driving portion 50. On the exposed surface of the main body 10 from the container 1, “OFF” is displayed as shown in FIG.

  FIG. 2 shows a state in which the handle 2 is rotated from the off position to the on position. At this time, the movable contact 10 of the movable contact 8 contacts the fixed contact 6 by the opening / closing / trip mechanism 3. That is, the latch member 39, one end of which is latched by the latch portion 37, is pulled down via the link 36 by the rotation of the handle 2, and the cross bar 40 is rotated in the ON direction against the biasing means 41 to be movable. At the same time as the movable contact 10 of the contact 8 contacts the fixed contact 6, the link 36 is in the reverse position. Further, as the handle 2 rotates, the locking portion 12 pushes the inclined surface 26 of the handle locking member 15 and gets over the tip of the handle locking member 15. The handle latching member 15 is retracted by the spring 23 and then returns to the advanced state when the latching portion 12 passes and latches to the stopper portion 24. For this reason, the rotation of the handle 2 from the on position to the off position is locked. On the exposed surface of the main body 10 from the body 1, “ON LOCK” is displayed as shown in FIG.

  When the release member 16 is pushed in this state, the receiving portion 30 is pushed by the release member 16 and the handle locking member 15 is retracted and separated from the locking portion 12, so that the lock is released and the handle 2 can be turned in the off direction. Become. When the pushing of the release member 16 is released, the release member 16 is returned to the state shown in FIG. 2 by the spring 28 and the handle locking member 15 is returned by the spring 23.

  FIG. 3 shows a state where an abnormal current flows and trips in the ON state of FIG. First, the tripping member 39 is driven by the abnormal current detection device 20. As a result, the latch portion 37 of the tripping member 39 trips the latch member 35, the crossbar 40 is rotated by the spring 41, and the movable contact 7 of the movable contact 8 is separated from the fixed contact 6. At the same time, the tripping member 39 is driven to push the second receiving portion 51 by the driving portion 50, and the handle locking member 15 is separated from the locking portion 12. The handle 2 is moved to the neutral position by the handle return spring 14.

  A second embodiment of the present invention will be described with reference to FIGS. Instead of the driving unit 50 and the second receiving unit 51 of the first embodiment, a rotating body 53 is added. The rotating body 53 is rotatably supported by the container 1 and connects the release member 16 to one side of the rotation fulcrum 57 and connects the crossbar 40 to the other side of the rotation fulcrum 57. When 40 is in the contact opening position, the handle locking member 15 is driven in the direction of releasing the locking state with the locking portion 12 against the biasing force via the release member 16.

  The release member 16 is disposed so as to be movable in the vertical direction of the container body 1 while being urged so as to protrude from the upper surface of the container body 1, and the release member 16 is moved against the urging force of the container body 1. When moved inward, the handle locking member 15 is driven in a direction away from the main body 10 of the handle 2. Then, the release member 16 and the rotating body 50 are connected by the connecting body 54, and when the releasing member 16 is pressed to the rotating body 53 in the direction in the container 1, the connecting body 54 is moved to a position where the rotating body 53 does not rotate. A loose insertion hole 55 for loose insertion is formed. The rotating body 53 and the cross bar 40 are also connected by a connecting body 56. In other configurations, the movable contact 7 and the fixed contact 6 and the abnormal current detection device 20 are arranged in the left-right direction in the figure on the internal circuit, and the direction of the movable contact 8 and the pulling direction of the urging means 41 are opposite. This is the same as in the first embodiment.

  FIG. 4 shows an off state, and the cross bar 40 is rotated in the opening direction about the shaft 40a, whereby the rotating body 53 is rotated clockwise in FIG. 16 is moved inward of the instrument, the receiving portion 30 of the handle locking member 15 is pushed, and the handle locking member 15 is retracted to release the on-lock of the handle 2. The release member 16 is drawn into the container 1.

  FIG. 5 shows an on state, in which the handle 2 is tilted to the on side from the off state of FIG. At this time, the latch member 35 whose one end is locked to the latch portion 37 is pushed down via the link 36, and is pushed by the latch member 35, so that the cross bar 40 rotates around the shaft 40 a, and the movable contact 8 The movable contact 7 is in contact with the fixed contact 6. The rotating body 53 is rotated counterclockwise by the rotation of the cross bar 40, the release member 16 is returned by the spring 28, protrudes outside from the container 1, and the handle locking member 15 is moved by the spring 23 to the handle 2. The main body 10 is approached and locked to the stopper portion 24. At this time, the locking portion 12 of the handle 2 gets over the handle locking member 15 and the handle 2 is locked on.

  FIG. 6 shows a tripped state due to an abnormal current flowing in the ON state. The abnormal current detection device 20 operates, the tripping member 39 is driven, and the latch member 35 is pulled out by the latch portion 37, whereby the cross bar 40 rotates counterclockwise. For this reason, the rotating body 53 rotates in the clockwise direction, pulls the release member 16 and pulls the handle locking member 15, moves away from the locking portion 12, the handle 2 is unlocked, and assumes a neutral posture.

FIG. 7 shows a state in which the release member 16 is pushed in the ON state and the handle 2 is unlocked.
At this time, the receiving portion 30 is pushed by the pushing of the release member 16 and the handle locking member 15 moves backward. However, since the coupling body 54 moves in the loose insertion hole 55, the rotating body 53 rotates around the shaft 57. The movable contact 8 does not move and the movable cross bar 40 does not rotate, and the movable contact 8 maintains the ON state. The handle 2 can be turned off.

  In the present invention, the loose insertion hole 55 may be formed in the release member 16. Further, the locking portion 12 can be configured to get over without the inclined surface 26 at the tip of the handle locking member 15. Further, the inclined surface 26 can be provided not on the handle locking member 15 but on the locking portion 12.

(A) is a partial sectional side view of the 1st Embodiment of this invention in the OFF state, (b) is a top view. (A) is a partial sectional side view of an ON state, (b) is a top view. (A) is a partial sectional side view of a trip state, (b) is a plan view. (A) is the partial cross section side view of the OFF state of 2nd Embodiment, (b) is a top view. (A) is a partial sectional side view of an ON state, (b) is a top view. (A) is a partial sectional side view of a trip state, (b) is a plan view. (A) is the fragmentary sectional side view of the ON state which pushed the release member, (b) is a top view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Container 2 Handle 3 Open / close / trip mechanism 6 Fixed contact 7 Movable contact 8 Movable contact 10 Main body 11 Handle 12 Locking part 15 Handle locking member 16 Release member 20 Abnormal current detection device 23 Spring 24 Stopper 28 Spring 30 Receiving Part 35 latch member 36 link 37 latch part 39 tripping member 40 crossbar 41 urging means 50 driving part 51 second receiving part 53 rotating body 55 loose insertion hole

Claims (4)

A body, a main body having a main body rotatably held in the main body, a handle having a handle that is connected to the main body and protrudes from the surface of the main body to the outside, and is connected to the handle via a link A latch member, a tripping member having a latch portion for locking a part of the latch member and supported in the body, and a part of the latch member latched by the tripping member. A movable body having a contact that is opened and closed by a turning operation; an abnormal current detection device that drives the latch member in a direction to release the latch member when an abnormal current flows through the contact in a closed state of the contact; and An urging means for urging the movable body in a contact opening direction when the latched state of the latch member is released, and when the handle is urged by a spring in the off direction and an abnormal current flows through the contact The trip member A circuit breaker in which the latching state of the latch member is released to forcibly open the contact, and the handle is positioned at a neutral position between on and off by a biasing force in the off direction of the handle. ,
A locking portion formed on the main body of the handle;
The handle is disposed so as to face the main body and is biased in the direction of the main body of the handle so that when the handle is turned from the off position to the on position, the locking portion can be overcome, and A handle locking member that locks when the handle is rotated from the on position to the off position in a state where the locking portion has been overcome;
A release member that is arranged to be operable from outside the container body and that drives the handle locking member in a direction to release the locking state of the locking portion against its urging force;
A drive unit that is provided on the tripping member and drives the handle locking member in a direction to release the locked state with the locking unit against the biasing force when driven by the abnormal current detection device; A circuit breaker comprising:   The locking portion is formed to project from the main body, and the handle locking member has a tip that can contact only the locking portion of the main body when the handle is rotated. The circuit breaker according to claim 1, wherein the circuit breaker is engaged with the circuit breaker. A body, a main body having a main body rotatably held in the main body, a handle having a handle that is connected to the main body and protrudes from the surface of the main body to the outside, and is connected to the handle via a link A latch member, a tripping member having a latch portion for locking a part of the latch member and supported in the body, and a part of the latch member latched by the tripping member. A movable body having a contact that is opened and closed by a turning operation; an abnormal current detection device that drives the latch member in a direction to release the latch member when an abnormal current flows through the contact in a closed state of the contact; and An urging means for urging the movable body in a contact opening direction when the latched state of the latch member is released, and when the handle is urged by a spring in the off direction and an abnormal current flows through the contact The trip member A circuit breaker in which the latching state of the latch member is released to forcibly open the contact, and the handle is positioned at a neutral position between on and off by a biasing force in the off direction of the handle. ,
A locking portion formed on the main body of the handle;
The handle is disposed so as to face the main body and is biased in the direction of the main body of the handle so that when the handle is turned from the off position to the on position, the locking portion can be overcome, and A handle locking member that locks when the handle is rotated from the on position to the off position in a state where the locking portion has been overcome;
A release member that is arranged to be operable from outside the container body and that drives the handle locking member in a direction to release the locking state of the locking portion against its urging force;
The release member is rotatably supported by the container body, and the release member is connected to one side of the rotation fulcrum, and the movable body is connected to the other side of the rotation fulcrum. A circuit breaker comprising: a rotating body that drives the handle locking member in the direction of releasing the locking state with the locking portion against the biasing force via the releasing member. The release member is disposed so as to be movable in the vertical direction of the container while being urged so as to protrude outward from the upper surface of the container, and the release member is opposed to the urging force of the container. The handle locking member is driven in a direction away from the main body of the handle when being moved, and the release member and the rotating body are connected by a connecting body,
The loose insertion hole which loosely inserts the said connection body to the position where the said rotation body does not rotate is formed in one of the said cancellation | release member and the said rotation body when the said release member is pressed in the body direction. Circuit breaker.

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