JP5162336B2 - Handle lock device and handle lock system - Google Patents

Description

  The present invention includes a handle lock device that restrains an operation handle that extends along a predetermined extending direction from a switch that performs electrical opening and closing or mechanical opening and closing in a state where it cannot be operated, and the handle lock device. The present invention relates to a handle lock system.

  A switch such as a circuit breaker is provided with an operation handle that swings between an OFF position and an ON position in conjunction with a movable contact, extending in a predetermined extending direction. When the circuit breaker separates the movable contact from the fixed contact and interrupts the electric circuit, when the power is restored, the operating handle is swung from the OFF position to the ON position to bring the movable contact into contact with the fixed contact. .

  Since the electric circuit changes to the cut-off state or the energized state by operating the operation handle of the circuit breaker, the operation handle is fixed at the ON position or the OFF position for the purpose of restricting the electric circuit from being turned off or energized. A handle lock device is used. The handle lock device is not only a switch that performs electrical switching such as a circuit breaker, but also a switch that mechanically opens and closes to a device in which an operation handle extends in a predetermined extending direction. Can be used.

  As a conventional handle lock device, a lock member that is externally fitted to an operation handle and is attached to a circuit breaker, and an engagement state that is locked to the circuit breaker and the lock member to maintain the mounting state of the lock member with respect to the circuit breaker. There is a U-shaped lock pin.

  The handle lock device is small enough to be carried by a worker in a pocket of clothes. In particular, when the lock member and the lock pin are configured separately, the lock pin is easily lost.

Therefore, there is a type in which a lock pin is inserted into a sliding groove formed in the lock member from one end to the center, and the lock pin is movably held by the lock member. The lock pin is rotatably engaged with the circuit breaker at both ends, and engages with the engagement groove of the lock member at the center (see, for example, Patent Document 1).
Japanese Patent Application Laid-Open No. 2005-268012

  However, since the central portion of the lock pin comes into contact with the engagement groove of the lock member only in one direction, the contact state between the central portion of the lock pin and the engagement groove of the lock member is easily lost due to plastic deformation over time. There is a problem that the mounting state of the lock member with respect to the switch cannot be reliably maintained.

  An object of the present invention is to prevent the contact state between the lock pin and the lock member from being lost due to plastic deformation over time by bringing the lock pin into contact with the lock member in a plurality of directions. An object of the present invention is to provide a handle lock device and a handle lock system that can reliably maintain the mounting state.

  The handle lock device according to the present invention includes a lock member and a lock pin. The lock member is attached to the switch and has a recess into which the operation handle is inserted along the extending direction. The lock pin is a substantially U-shaped wire rod that is held by a lock member, has both ends detachably and pivotably engaged with a switch, and has a pair of support portions extending from both sides of the center portion to both ends. Become. The lock pin, with both ends engaged with the switch, a retracted position that is movable along the extending direction of the operation handle with respect to the lock member, and a fixed position where movement relative to the lock member is restricted, It can be freely rotated between. The lock member includes a groove portion in which each intermediate portion of the support portion in the lock pin at the fixed position is fitted in the rotation direction.

  The plastic deformation with time occurring in the intermediate portion of the lock pin is corrected by the insertion of the intermediate portion into the groove portion, and the mounting state of the lock member with respect to the switch is reliably maintained by the insertion of the intermediate portion into the groove portion.

Lock member Ru includes first to third slits. The central portion of the first slit passes while the lock pin rotates from the fixed position to the retracted position. The second slit has a first end continuous with the first slit, a central portion passing in the extending direction, and a second end continuous with the groove. The third slit is continuous with the second end. When the lock member is attached to or detached from the switch, the lock pin can be reliably moved within the lock member.

  Moreover, it is preferable that the lock member includes a stepped portion that engages with the support portion in a state where the intermediate portion is fitted in the groove portion. The lock pin can be fixed to the lock member removed from the switch.

  Furthermore, the intermediate portion can be composed of a plurality of bent portions. A lock pin having an intermediate portion that is fitted in the groove portion in different directions can be easily formed using a wire.

  The handle lock system according to the present invention includes a handle lock device for a switch and a switch, and engages both ends of a lock pin with an engagement hole formed in the switch. The switch lock device for a switch is the handle lock device for a switch described in any of the above. The switch has an operation handle that can swing between an ON position and an OFF position.

  In this configuration, the lock member and the switch are locked by engaging both end portions of the lock pin of the handle lock device with the engagement holes formed in the switch.

  According to the handle lock device of the present invention, by bringing the lock pin into contact with the lock member in a plurality of directions, the contact state between the lock pin and the lock member can be prevented from being lost due to plastic deformation over time. It is possible to reliably maintain the mounting state of the lock member with respect to the switch.

  FIG. 1 is a perspective view of a handle lock device according to an embodiment of the present invention. The handle lock device 10 is composed of a lock member 1 and a lock pin 2, and as an example, an operation handle that extends along a predetermined extending direction from a circuit breaker that is a switch is restrained so as not to be operated at an OFF position.

  As an example, the lock member 1 is made of resin as a material. The lock member 1 has a through hole 11, an insertion hole 12, a recess 13, and a slit 14. The through hole 11 penetrates the upper part of the lock member 1. The insertion hole 12 is open on the upper surface of the lock member 1 in a direction perpendicular to the axial direction of the through hole 11. The recess 13 is open to the bottom at the bottom of the lock member 1. The slit 14 is formed by bending a plurality of times downward from the insertion hole 12. The through hole 11 communicates with the slit 14 in the upper part of the lock member 1.

  The lock pin 2 is formed, for example, in a substantially U shape by bending a spring wire at a plurality of positions. The lock pin 2 is held by the lock member 1 by allowing the center portion 21 to move within the slit 14 by allowing the end portion 23 to the center portion 21 to pass through the insertion hole 12.

  FIG. 2 is a side view of the lock member 1. The lock member 1 includes a base 1A having a substantially triangular side view, an upper portion 1B having a substantially rectangular side view, and a lower portion 1C having a substantially parallelogram in a side view.

  The slit 14 is formed in the upper portion 1B, and the first arc portion 14A that is the first slit of the present invention, the straight portion 14B that is the second slit, and the second arc portion 14C that is the third slit. Are connected in order from the top to the bottom. That is, the straight portion 14B is connected to the first arc portion 14A at the upper end portion which is the first end portion of the present invention, and is connected to the second arc portion 14C at the lower end portion which is the second end portion of the present invention. It is connected.

  The first arc portion 14 </ b> A communicates with the insertion hole 12 through the communication hole 17. The communication hole 17 has an opening width on the upper insertion hole 12 side slightly larger than the outer diameter of the lock pin 2 and a lower opening width on the first arcuate portion 14A side than the outer diameter of the lock pin 2 in side view. Also slightly narrowed.

  On the side surface of the lock member 1, a groove portion 15 is formed continuously to the upper end side of the second arc portion 14 </ b> C. The width of the groove 15 in a side view is substantially equal to the outer diameter of the lock pin 2. The width of the slit 14 in a side view is slightly larger than the outer diameter of the lock pin 2. Moreover, the width | variety of the one end part located under the communicating hole 17 in 14 A of 1st circular arc parts is made wider than the other part. The slit 14 is formed through both side surfaces of the lock member 1. The groove 15 is formed at a predetermined depth from both side surfaces of the lock member 1 and does not penetrate both side surfaces of the lock member 1.

  The recess 13 is formed between the base 1A and the lower part 1C. The operation handle of the circuit breaker is inserted into the recess 13 along the arrow X direction from the bottom surface side of the lock member 1. The arrow X direction is parallel to the extending direction of the operation handle from the circuit breaker. Further, the linear portion 14B is formed in parallel with the arrow X direction.

  FIG. 3 is a perspective view of the lock pin. The lock pin 2 is formed in a symmetrical shape with the central portion 21 sandwiched by the central portion 21, the support portion 22, and the end portion 23.

  The support portion 22 is continuous from both ends of the central portion 21 to the end portion 23. The intermediate portion 22 </ b> A of the support portion 22 includes, as an example, a bent portion 24 </ b> A to 24 </ b> C, and includes an insertion portion 25 </ b> A parallel to the central portion 21 and a press contact portion 25 </ b> B orthogonal to the central portion 21.

  The end portion 23 is continuous with the lower end portion of the support portion 22 and is formed in parallel with the central portion 21.

  When the lock pin 2 is held by the lock member 1, one end portion 23 to the center portion 21 is inserted into the insertion portion 12 of the lock member 1, and then the center portion 21 is passed through the communication hole 17 downward. Guide into the first arc portion 14A. Since the width of the upper portion of the communication hole 17 is slightly wider than the outer diameter of the lock pin 2, the central portion 21 can be easily guided into the communication hole 17.

  When the central portion 21 passes through the communication hole 17, the width of the lower portion of the communication hole 17 expands until it becomes substantially equal to the outer diameter of the lock pin 2 due to elastic deformation. When the center portion 21 reaches the first arc portion 14A, the width of the lower portion of the communication hole 17 is restored to a width slightly narrower than the outer diameter of the lock pin 2 by elastic force. This makes it difficult for the central portion 21 to pass through the communication hole 17 from the first arc portion 14 </ b> A toward the insertion hole 12. The lock pin 2 is held in the lock member 1 such that the central portion 21 can freely move in the first arc portion 14A, the straight portion 14B, and the second arc portion 14C.

  The distance between the two support portions 22 is slightly wider than the thickness of the upper portion 1B and the lower portion 1C of the lock member 1 on the central portion 21 side, and is sufficiently wider than the thickness of the base portion 1A of the lock member 1. It is narrower than the thickness of the lock member 1. Further, the distance between the two support portions 22 is sufficiently narrower than the thickness of the upper portion 1B and the lower portion 1C of the lock member 1 on the end portion 23 side, and slightly larger than the thickness of the base portion 1A of the lock member 1. Further, the distance between the two support portions 22 is equal to the thickness of the groove portion 15 of the lock member 1 at the position of the pressure contact portion 25B.

  4A to 4C are side views showing the positional relationship between the lock member and the lock pin. As shown in FIG. 4A, when the central portion 21 of the lock pin 2 is positioned on the lower end side of the second arc portion 14C, the central portion 21 side of the support portion 22 of the lock pin 2 is the lock member 1. Opposite the base 1A. Since the distance between the two support portions 22 on the central portion 21 side is sufficiently larger than the thickness of the base portion 1A of the lock member 1, the lock pin 2 is elastically pressed by pressing the two support portions 22 from both sides. By deforming, the interval between the two end portions 23 can be narrowed.

  After the two end portions 23 (both end portions) in a state where the interval is narrowed are opposed to the two hole portions (engagement holes of the present invention) of the circuit breaker, the pressing force on the support portion 22 is released. The two end portions 23 are fitted into the two hole portions by the elastic force of the lock pin 2. As a result, the lock pin 2 is elastically engaged with the circuit breaker while being detachable and rotatable at both ends.

  Even in this state, the engagement state of the lock pin 2 with respect to the circuit breaker can be released by pressing the two support portions 22 from both side surfaces and extracting the end portion 23 from the hole of the circuit breaker.

  When the lock member 1 is moved downward along the arrow X direction from the state shown in FIG. 4A, the operation handle of the circuit breaker enters the recess 13. When the operation handle of the circuit breaker is completely inserted into the recess 13, the positional relationship between the lock member 1 and the lock pin 2 is as shown in FIG. 4B, and the handle lock device is attached to the circuit breaker. can do.

  As shown in FIG. 4B, when the center portion 21 of the lock pin 2 is positioned on the lower end side of the first arc portion 14A, the center portion 21 is the first arc portion 14A, the straight portion 14B, and the second arc. It can move freely within the portion 14C. Therefore, even when the end 23 of the lock pin 2 is engaged with the circuit breaker, the lock member 1 is moved from the position shown in FIG. 4B to the position shown in FIG. 4A along the arrow X direction. The handle lock device can be removed from the circuit breaker by moving upward. The position of the lock pin 2 shown in FIG. 4B in a state where the end 23 is engaged with the hole of the circuit breaker is the retracted position of the present invention.

  When the lock pin 2 is rotated in the direction of the arrow Y from the retracted position shown in FIG. 4B with the end portion 23 as a fulcrum, the center portion 21 moves in the first arc portion 14A toward the upper end side, and the insertion portion 25A and the pressure contact portion 25B move toward the inside of the groove portion 15.

  As shown in FIG. 4C, when the central portion 21 reaches the upper end of the first arc portion 14A, the fitting portion 25A and the pressure contact portion 25B are fitted into the groove portion 15. The position of the lock pin 2 shown in FIG. 4C in a state where the end 23 is engaged with the hole of the circuit breaker is the fixed position of the present invention.

  Accordingly, the central portion 21 passes through the first arc portion 14A, which is the first slit of the present invention, while the lock pin 2 rotates from the fixed position to the retracted position. The central portion 21 passes through the linear portion 14B, which is the second slit of the present invention, in the extending direction.

  Since the width of the groove portion 15 in a side view is substantially equal to the outer diameter of the lock pin 2, the fitting portion 25 </ b> A is formed on the upper and lower surfaces of the groove portion 15 in a state where the lock pin 2 is in the fixed position shown in FIG. The displacement of the lock pin 2 with respect to the lock member 1 in the direction of the arrow X is restricted.

  In addition, since the distance between the two support portions 22 is equal to the thickness of the lock member 1 in the groove portion 15 at the position of the press contact portion 25B, the two press contact portions 25B contact the groove portion 15 in the thickness direction of the lock member 1. The fitting portion 25 </ b> A does not come out from the groove portion 15 in the thickness direction of the lock member 1. Further, the rotation of the lock pin 2 from the fixed position toward the retracted position is also suppressed.

  Further, since the interval between the two support portions 22 is narrower than the thickness of the lock member 1 at the step portion 16, the support portion 22 elastically engages with the step portion 16 and moves from the fixed position to the retracted position. The rotation of the lock pin 2 is more reliably regulated.

  Thus, in a state where the lock pin 2 is in the fixed position, the mounting state of the handle lock device 10 with respect to the circuit breaker is maintained.

  However, since the first arc portion 14A is wider than the outer diameter of the lock pin 2 and wider at the upper end portion, the central portion 21 contacts the inner surface of the first arc portion 14A. The central portion 21 is not involved in maintaining the mounting state of the handle lock device 10 with respect to the circuit breaker.

  The width of the groove 15 and the outer diameter of the lock pin 2, the thickness of the lock member 1 in the groove 15, and the distance between the two support portions 22 in the pressure contact portion 25 </ b> B are set appropriately, thereby fitting into the groove 15. The lock pin 2 can be held at the fixed position only by fitting the portion 25A and the pressure contact portion 25B. In this case, the step 16 can be omitted.

  By enabling the lock pin 2 to be held at a fixed position, in the handle lock device 10 not attached to the circuit breaker, the integrity of the lock member 1 and the lock pin 2 can be maintained, and the handle lock device 10 Portability can be improved. For this purpose, it is effective to provide the locking member 1 with a step 16.

  FIGS. 5A and 5B are perspective views of a handle lock system using the handle lock device described above. FIG. 5A shows a handle lock system in which the handle lock device 10 is used in a single-pole circuit breaker 100. FIG. 5B shows a handle lock system in which the handle lock device 10 is used for a two-pole circuit breaker 200.

  After the lock pin 2 is elastically engaged with the circuit breakers 100 and 200 at the end 23 (not shown in FIG. 5) in a freely rotatable and detachable manner, the operation handle 110 and the recess 13 of the lock member 1 are engaged. 210 is inserted, and the lock pin 2 is rotated from the retracted position to the fixed position. Thereafter, the hook 301 is passed through the through hole 11 of the lock member 1 and the padlock 300 is locked.

  When the hook 301 passes through the slit 14, the lock pin 2 cannot be rotated to the retracted position, and the lock member 1 cannot be separated from the circuit breakers 100 and 200. Thereby, until the padlock 300 is unlocked, the inserted state of the operation handles 110 and 210 with respect to the recess 13 of the lock member 1 is maintained, and the operation of the operation handles 110 and 210 can be restricted.

  The shape and interval of the two holes where the two ends 23 of the lock pin 2 are engaged are equal to each other in the circuit breaker 100 and the circuit breaker 200. For this reason, the same handle lock device 10 can be used for the circuit breaker 100 and the circuit breaker 200.

  In addition, since the circuit breaker of 3 poles or more provided with the one-hand type operation handle having the same shape as the circuit breakers 100 and 200 also has the same shape and interval of the two holes, the handle lock device 10 is connected to the circuit breaker. It can be used similarly to the circuit breakers 100 and 200.

  In addition, the handle lock device 10 is not limited to the circuit breakers 100 and 200 but is opened and closed electrically and mechanically, provided that the handle lock device 10 includes an operation handle extending along a predetermined extending direction. Can be used in a vessel.

  The above description of the embodiment is to be considered in all respects as illustrative and not restrictive. The scope of the present invention is shown not by the above embodiments but by the claims. Furthermore, the scope of the present invention is intended to include all modifications within the meaning and scope equivalent to the scope of the claims.

1 is a perspective view of a handle lock device according to an embodiment of the present invention. It is a side view of the lock member with which the handle lock device is equipped. It is a perspective view of the lock pin with which the handle | steering-wheel locking apparatus is equipped. (A)-(C) are side views which show the positional relationship of a locking member and a lock pin. (A) And (B) is a perspective view of the handle lock system which uses the above-mentioned handle lock device.

Explanation of symbols

1-lock member 2-lock pin 10-handle lock device 13-recess 14-slit 15-groove 21-center 22-support 23-end 22A-intermediate position 100,200-circuit breaker 110,210-operation handle

Claims (4)

In a handle lock device that restrains an operation handle extended along a predetermined extending direction from a switch so that it cannot be operated,
A lock member attached to the switch, the lock member having a recess into which the operation handle is inserted along the extending direction;
A lock pin held by the lock member, substantially U having both ends connected to the switch detachably and pivotably, and a pair of support portions extending from both sides of the central portion to the both ends. And a lock pin made of a letter-shaped wire,
The lock pin has a retracted position that is movable along the extending direction with respect to the lock member in a state where both ends are engaged with the switch, and a fixed that is restricted from moving with respect to the lock member. Between the position and the rotation,
The lock member includes a groove portion in which each intermediate portion of the support portion in the lock pin at the fixed position is fitted in the rotation direction,
The lock member includes a first slit through which the central portion passes while the lock pin rotates from the fixed position to the retracted position, and a first end portion that is continuous with the first slit. A second slit having a central portion passing in the extending direction and a second end continuing to the groove; and a third slit continuing to the second end;
A handle lock device that maintains a state in which the lock member is attached to the switch by the fitting of the intermediate portion to the groove. 2. The handle lock device according to claim 1, wherein the lock member includes a step portion that engages with the support portion in a state where the intermediate portion is fitted in the groove portion. The handle lock device according to claim 1 or 2 , wherein the intermediate portion is constituted by a plurality of bent portions. The handle lock device according to any one of claims 1 to 3 ,
A switch having an operation handle swingable between an ON position and an OFF position,
A handle lock system, wherein both ends of the lock pin are engaged with engagement holes formed in the switch.

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