JP2008150801A - Lock device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lock device with the proper workability of replacement of a cylinder lock. <P>SOLUTION: This lock device comprises: a locking body 4 which releases the locked state of restraining the movement of a locking object 3 by the connection of an attachment/detachment connecting end 1 to a lock body 2, by disconnecting the connecting end 1; a cylinder lock 6 which is mounted by being inserted into the lock mounting hole 5 of the lock body 2, and which regulates a shift to an unlocked state by restraining the locking body 4 to the lock body 2 in the locked state; an anti-coming-off member 7 which can freely protrude into/recede from the lock mounting hole 5, and which prevents the coming-off of the cylinder lock 6 by being locked to the cylinder lock 6 in a position to protrude into the lock mounting hole 5; and a stopper 9 which is mounted on the lock body 2 so as to regulate the movement of the anti-coming-off member 7 from the protruding position, and which enables the operation of receding from a regulating position to be performed by operating an operation portion 8 exposed outside in the unlocked state. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a locking device.

  As a locking device in which a cylinder lock for restricting one end of a locking body protruding from a lock body to a locking position is replaceable, the one described in Patent Document 1 is known.

  In this conventional example, the locking device is formed by connecting one end of a U-shaped locking hook (locking body) to a locking body (locking body), and operates to lock a cylinder (cylinder lock) attached to the locking body. By doing so, the lock body can be restrained at the lock position where the lock body and the lock body form a closed loop.

  The cylinder lock is provided with a headed pin that is urged toward the lock body and protrudes, and the cylinder lock is prevented from coming off by positioning the headed pin at the boundary between the cylinder lock and the lock body.

Replacement of the cylinder lock is performed by removing the guard screw screwed into a position covered by the lock body in the locked state, and then pushing the headed pin into the cylinder lock by means of a curve inserted from the screw hole of the guard screw.
Japanese Utility Model Publication No. 58-38127

  However, in the above-described conventional example, in order to remove the cylinder lock, it is necessary to push the headed pin into the headed pin using a bend, and the cylinder lock replacement operation is a headed which is urged in the protruding direction by a spring. Since it is necessary to handle the cylinder lock with the pin held, there is a problem that workability is poor.

  In addition, the pushing operation to the headed pin can be simplified by using the opening closed by the stopper as the operation hole. In this case, the operation hole is opened on the outer surface of the lock body. However, there is a drawback that it is easy to be mischievous.

  The present invention has been made to eliminate the above-described drawbacks, and an object of the present invention is to provide a locking device with good cylinder lock replacement workability.

  The lock device includes a lock body 2 and a lock body 4 that can restrain the lock object 3 by connecting the detachable connecting end 1 to the lock body 2. The locking body 4 can be formed entirely as a rigid body, or can be formed by fixing the detachable connecting end 1 made of a rigid body to one end of a linear body that can be bent, such as a wire. Further, the opposite end of the locking body 4 is not necessarily connected to the lock body 2 in a non-detachable manner. For example, the locking body 4 as a whole is detached from the lock body 2 in the unlocked state, or the object to be locked It may be fixed to 3 and not connected to the lock body 2 at all.

  A cylinder lock 6 for restraining the lock body 4 to be held in a locked state is inserted into a lock mounting hole 5 provided in the lock body 2, and a retaining member 7 that moves forward and backward in the lock mounting hole 5 is inserted into the cylinder. It is prevented from coming off by being locked to the lock 6. The stopper member 7 is restricted from moving in the unlocking direction with the cylinder lock 6 by the stopper 9, and the cylinder lock 6 is removed from the restricted position by detaching or moving the stopper 9. Thereafter, the locking of the cylinder lock 6 by the retaining member 7 is released.

  In the present invention configured to restrict the movement of the retaining member 7 to the unlocking position with the cylinder lock 6 by the stopper 9 where the operation portion 8 is exposed in the unlocked state, The cylinder lock 6 can be removed without requiring an operation. As a result, troublesome work for operating the retaining member 7 is not required and the operability is improved, and the holes for operating the retaining member 7 that may be targeted for mischief and the like are provided in the lock body. 2 is not required to be opened on the outer surface.

  The unlocking operation of the retaining member 7 is performed by, for example, moving the retaining member 7 to the unlocking position using the dead weight of the retaining member 7 after performing the restriction releasing operation by the stopper 9. However, the retaining portion of the retaining member 7 and the cylinder lock 6 has a component in the retracting direction from the lock mounting hole 5 to the retaining member 7 due to the pulling operation force from the lock mounting hole 5 to the cylinder lock 6. If formed into a shape to be generated, the cylinder lock 6 can be removed only by applying a removal force to the cylinder lock 6 after the restriction release operation by the stopper 9, so that the operability is further improved. Such a locking portion is, for example, any one of the locking portion between the locking member 7 and the cylinder lock 6 by forming the locking member 7 with a sphere and locking the portion less than the hemisphere with the cylinder lock 6. It can be realized by forming an inclined surface on either side.

  Further, when the retaining member 7 is formed of a sphere, the contact area with the cylinder lock 6 can be reduced, so that even when corrosion or the like due to long-term use occurs, the fixing force is weak. This will not interfere with the removal of the cylinder lock 6.

The locking device
A locking state in which both ends of the U-shaped locking body 4 are connected to the lock body 2 and a closed loop is formed by the lock body 2 and the locking body 4;
A locking device capable of transitioning between an unlocked state in which one end of the locking body 4 is detached from the lock body 2,
The locking body 4 is formed by connecting the straight bodies 11 and 13 to both ends of the connection block 12 in a parallel posture,
Each straight body 11, 13 can be configured to be idle with respect to the lock body 2 and the connecting block 12 in the locked state.

  A so-called padlock or shackle lock that uses a U-shaped shackle with two parallel straight portions as a locking body 4 is generally in a locked state and may be broken by unauthorized cutting into the parallel straight portions. is there. As a countermeasure against this, the locking body 4 is provided with sufficient cutting strength.

  However, since the parallel straight part needs to be inserted into the lock body 2 and further locked by the lock part in the lock body 2, the strength improvement due to the increase in the step area causes an increase in the size of the entire apparatus. There is a problem.

  In this regard, according to the present invention, when the straight rod bodies 11 and 13 constituting the parallel straight rod portion are to be cut, the straight rod bodies 11 and 13 are idled around the axial center, and a cutting force is applied to the straight rod bodies 11 and 13. To regulate. As a result, it is possible to increase the resistance to the above-described unauthorized breaking without forming an excessively large cross-sectional area or using an expensive material.

  According to the present invention, it is possible to improve the cylinder lock replacement workability.

  As shown in FIG. 1, the lock device is formed by connecting a lock body 4 to a lock body 2. The lock casing 2a of the lock body 2 and the components of the lock body 4 are made of a material having a good knife cutting resistance in order to prevent breakage due to unauthorized cutting operation.

  The locking body 4 is formed in a U-shape when viewed from the front by connecting the movable housing 13 and the detachable housing 11 to both ends of the connecting block 12. The connecting block 12 is formed in an L-shape when viewed from the front by extending the fixed end of the movable housing 13 in the axial length direction of the movable housing 13, and the extension lower end surface is externally fitted to an elastic seal body 14 described later. A sealing body fitting recess 12a is formed. In the following description, “up and down” is defined based on the posture shown in FIG.

  As shown in FIG. 3A, the movable housing 13 and the detachable housing 11 are connected so as not to be removed by retaining pins 12b driven into the connecting block 12. The retaining pin 12b is driven so as to be engaged with the small-diameter portions 11a and 13a formed at the upper ends of the casings 11 and 13, and enables the casings 11 and 13 to be idle in a connected state. The hole for mounting the retaining pin 12b is filled with a buried metal (berry metal 12c) so as not to induce an unauthorized removal operation to the retaining pin 12b.

  Further, a retaining portion 15 and a locked portion 16 are formed at the lower end portion of the movable housing 13. The retaining portion 15 and the latched portion 16 are formed using a step between the small diameter portions 15a, 16a formed on the movable side housing 13 and the general portion.

  On the other hand, the lock body 2 is formed by accommodating a cylinder lock 6 in a lock case 2a. The lock case 2a is formed with a lock body insertion hole 2b and a lock fitting hole 2c corresponding to the movable side housing 13 and the detachable side housing 11 of the lock body 4, and the lock body 4 is formed in the lock body insertion hole 2b. The movable housing 13 is inserted. A compression spring 20 is interposed between the lower end of the movable housing 13 and the bottom wall of the locking body insertion hole 2b, and urges the locking body 4 upward.

  As shown in FIG. 2, the movable side housing 13 is prevented from coming off by locking the retaining pin 17 driven into the lock case 2 a to the retaining portion 15. As shown in FIGS. 1 and 2, the small diameter portion 15a formed in the movable housing 13 to form the retaining portion 15 determines the vertical stroke of the locking body 4, and the lower stroke end shown in FIG. That is, the state in which the distal end portion (detachable connecting end 1) of the detachable housing 11 is fitted in the lock fitting hole 2c corresponds to the locked state.

  In the locked state, the lock body 4 and the lock body 2 form a closed loop, and the lock object 3 can be restrained using the closed loop. As shown in FIG. 2, when the locking body 4 is pulled up to the end of the upper stroke from this state, the detachable connecting end 1 is released from the lock fitting hole 2c. In this state, the closed loop formed in the locked state is eliminated, and thereafter, the locking body 4 can be horizontally rotated around the axis of the movable housing 13 as necessary to release the restriction of the locking object 3.

  In order to hold the lock body 4 in the locked state, the lock body 2 is provided with a lock portion 18. The lock portion 18 includes a lock piece 18a that advances and retreats into the locking body insertion hole 2b, and a compression spring 18b that urges the lock piece 18a in the protruding direction into the locking body insertion hole 2b. The lock piece 18a has a locking tip 18c having an upper surface formed as an inclined surface and a lower surface formed by a horizontal surface, and is disposed at a position facing the locked portion 16 of the locked body 4 in the locked state.

  The lateral hole opened in the lock case 2a to accommodate the lock piece 18a is closed using the belly metal 19 after the assembly work is completed, thereby preventing an illegal destruction operation using the opening.

  Therefore, in this embodiment, when the locking body 4 is pushed in from the unlocked state, the lock piece 18a once retracts from the locking body insertion hole 2b against the urging force of the compression spring 18b, and then returns to the original position again. It locks to the locked portion 16 of the locking body 4 and thereafter restricts movement in the unlocking direction. The retaining portion 15 of the movable housing 13 and the narrow diameter portions 15a and 16a for forming the locked portion 16 are cross-sectional shapes that do not interfere with the retaining pin 17 and the locking tip 18c of the lock piece 18a depending on the rotational posture. Since it is formed in a circular shape in this embodiment, idling around the axis of the movable housing 13 is allowed even in the locked state.

  In order to prevent water intrusion into the lock body 2 in the locked state, that is, in use, the lock fitting hole 2c and the lock body insertion hole 2b are formed by an elastic seal body 14 formed of a material having elasticity such as synthetic rubber. Sealed. As shown in FIGS. 2 and 3B, the elastic sealing body 14 on the lock fitting hole 2 c side is formed in a ring shape, and a step between the large-diameter head 9 a of the stopper 9 described later and the stopper insertion hole 21. It is inserted between the parts.

  On the other hand, as shown in FIGS. 2 and 3, the elastic sealing body 14 on the side of the locking body insertion hole 2b is formed by expanding the upper and lower cylindrical portions 14b and 14c at the eccentric position of the circular seat portion 14a. A lock case 2 a of the lock body 2 is fixed using a rivet 22. Between the seat portion 14a and the surface portion of the lock case 2a, a metal ring 23 having the same outer diameter as the seat portion 14a is fastened together by the rivet 22.

  The elastic seal body 14 is fixed in a state where the lower cylindrical portion 14c is fitted to the metal ring 23, and the movable housing 13 of the lock body 4 passes through the elastic seal body 14 and enters the lock body insertion hole 2b. Inserted into.

  Therefore, in this embodiment, as shown in FIG. 1, in the locked state, the elastic seal body 14 is fitted into the seal body fitting recess 12a of the locking body 4 and pressed from above. As a result, the gaps between the respective parts formed between the outside of the locking device and the locking body insertion hole 2b are completely closed by the elastically deformed elastic seal body 14, so that the water immersion into the locking body insertion hole 2b is ensured. Protected.

  In the locked state, the elastic seal body 14 is covered almost entirely by the metal ring 23 at the lower portion of the side surface and the wall surface of the seal body fitting recess 12a. As a result, the exposed portion to the outside air becomes as small as possible, and elastic deterioration due to ultraviolet rays or the like is prevented.

  In this embodiment, which automatically shifts to a lock state that cannot be released by movement to the lock position, the cylinder lock 6 is provided to release the restraint by the lock portion 18. The cylinder lock 6 is formed by rotatably inserting a plug 6b into a cylinder case 6a, and is inserted into a lock mounting hole 5 with an open end facing the lower surface. A cam 6c is connected to the plug 6b, and the lock piece 18a is moved in the unlocking direction by rotating the plug 6b in the unlocking direction. Thereafter, the lock body 4 can be moved to the unlocked state side. Become.

  The open end of the lock mounting hole 5 is closed by a cover plate 24 that can be rotated around the rotation shaft 24a so that water, dust, and the like do not enter the plug 6b in the use state.

  The cylinder lock 6 is detachably mounted in the lock mounting hole 5 using a retaining member 7 and a stopper 9. The retaining member 7 has a spherical shape and is slidably inserted into a lateral hole 2d opened from the outer peripheral wall of the lock case 2a toward the lock mounting hole 5, and as shown in FIGS. It engages / disengages in the retaining recess 6d formed in 6a. After the retaining member 7 is inserted, the lateral hole 2d is closed using the belly metal 2e, thereby preventing an illegal destruction operation using the opening.

  The stopper 9 is a bowl-shaped member having a large-diameter head portion 9a at the upper end, and is inserted into a stopper insertion hole 21 extending downward from the lock fitting hole 2c. A male screw 9b is formed in the large-diameter head portion 9a, and is screwed into the female screw portion of the stopper insertion hole 21 using a slit (operation portion 8) formed at the upper end.

  In the stopper 9, a restricting portion 25 having a large diameter and a restriction releasing portion 26 having a small diameter are arranged in the axial direction. As shown in FIG. 4B, the restricting portion 25 is arranged. The movement of the retaining member 7 to the unlocking position is regulated at the regulating position where the retaining member 7 is in contact with the retaining member 7. In order to remove the cylinder lock 6 from this state, first, as shown in FIG. 2, the lock body 4 is first moved to the unlocking position, and then the lock body 4 is rotated around the axis of the movable housing 13. The slit 8 is exposed.

  Next, as shown in FIG. 4, when the stopper 9 is moved to a position where the restriction release portion 26 is directly opposed to the horizontal hole 2 d using the slit 8 or until it is completely removed, movement restriction with respect to the retaining member 7 is performed. Is released. When a pulling force is applied to the cylinder lock 6 in this state, the retaining member 7 receives a component force from the retaining recess 6d and moves in the direction of releasing the locking with the retaining recess 6d, and the cylinder lock 6 can be pulled out. .

  4 shows a case where the stopper 9 is integrally formed with a male screw at the head, but as shown in FIG. 5, a screw member 27 having a male screw 9b and a housing portion 28 are provided. It can also be formed separately. The housing portion 28 is formed at the upper end from the head and the lower portion has the same diameter over the entire length as the restricting portion 25. The cylinder lock 6 can be replaced by removing the screw member 27 and then stopping the housing portion 28 as a stopper. It is carried out by removing from the insertion hole 21.

  FIG. 6 shows a second embodiment of the present invention. In the following description of the embodiments, components that are substantially the same as those of the above-described embodiment are denoted by the same reference numerals in the drawings, and description thereof is omitted.

  In this embodiment, the locking body 4 is formed in a bowl shape, and the locking body 4 is driven between the locked state and the unlocked state by operating the cylinder lock 6 so that the cylinder lock 6 is brought into the locked state. By restricting the rotation of the plug 6b, the transition to the unlocked state is restricted.

  A cylindrical cam 29 is connected to the plug 6 b of the cylinder lock 6, and the locking body 4 is disposed at a position parallel to the cylindrical cam 29 so as to be movable in the axial direction. The locking body 4 and the cylindrical cam 29 are connected via a follower node 30. When the plug 6b is rotated, the locking body 4 moves in the axial direction, and the detachable connecting end 1 at the tip is formed in the lock case 2a. The lock engagement hole 2c is engaged and disengaged.

  In this embodiment, the retaining member 7 is formed in a bowl shape with a locking flange portion 7a at the intermediate portion. The retaining member 7 is fitted into the retaining recess 6d of the cylinder lock 6 across the lock fitting hole 2c, and restricts the removal of the cylinder lock 6 from the lock mounting hole 5. The open end of the insertion hole 31 into which the retaining member 7 is inserted is filled with belly metal 31a.

  On the other hand, the stopper 9 is formed by a screw and is screwed into a stopper insertion hole 21 formed as a screw hole. One end of the stopper insertion hole 21 is opened in the lock fitting hole 2c, and the stopper 9 screwed in is obliquely inserted into the insertion hole 31 so that the stopper 9 can be locked to the locking flange portion 7a of the retaining member 7. It is formed to intersect.

  Therefore, in this embodiment, as shown in FIG. 6A, when in the locked state, the slit 8 of the stopper 9 is obscured by the detachable connecting end 1 of the locking body 4, and when in the unlocked state, the slit 8 is external. Exposed to. In this unlocked state, as shown in FIG. 6B, when the stopper 9 is removed, the retaining member 7 is movable and the cylinder lock 6 can be removed.

FIG. 7 shows a third embodiment of the present invention. In this embodiment, the locking body 4 is formed in a shape in which the movable housing 13 is exposed to the outside in the locked state. Both the movable housing 13 and the detachable housing 11 are free to rotate around the axis in the locked state. If the housings 11 and 13 are illegally cut using a blade, the housings 11 and 13 are idle. , Cutting is prevented.
(Appendix 1)
A locking body that releases the locked state in which the movement of the locking target is restricted by the connection of the detachable connecting end to the lock body;
A cylinder lock that is inserted into the lock mounting hole of the lock body and is mounted, restrains the lock body to the lock body in the locked state, and restricts the transition to the unlocked state; and
A locking member that can be moved forward and backward from the lock mounting hole, is locked to the cylinder lock at the protruding position to the lock mounting hole, and prevents the cylinder lock from being removed.
A stopper that is mounted on the lock body and restricts movement of the retaining member from the protruding position, and can be retracted from the restricted position by operating the operation part exposed to the outside in the unlocked state;
A locking device.
(Appendix 2)
The locking portion between the retaining member and the cylinder lock is formed in a shape in which a component force in the retracting direction from the lock mounting hole is generated in the retaining member by a pulling operation force from the lock mounting hole to the cylinder lock. The locking device as described.
(Appendix 3)
The locking device according to appendix 1 or 2, wherein the retaining member is a sphere.
(Appendix 4)
The locking body has a movable connecting end that is connected to the lock body so as to be movable in the advancing and retracting direction and not removable, and has a detachable connecting end at the other end, and is formed in a U shape, 2. The locking device according to 2 or 3.
(Appendix 5)
The movable connection end is formed on a movable side casing connected to the other end of a connection block to which an attachment / detachment side casing having the attachment / detachment connection end is connected at one end.
The locking device according to appendix 4, wherein the detachable housing and the movable housing are free to rotate around the central axis in the locked state.
(Appendix 6)
A locking device having a locked state in which both ends of a U-shaped locking body 4 are connected to the lock body 2 and a closed loop is formed by the lock body 2 and the locking body 4,
The locking body 4 is formed by connecting a casing to both ends of the connection block 12,
A lock device in which each housing is freely rotatable relative to the lock body 2 and the connecting block 12 in the locked state.

It is a figure which shows this invention, (a) is sectional drawing, (b) is a 1B direction arrow directional view of (a). It is sectional drawing which shows a lock release state. 2A is a sectional view taken along line 3A-3A, FIG. 2B is a sectional view taken along line 3B-3B, FIG. 2C is a sectional view taken along line 3C-3C, and FIG. 2D is a sectional view taken along line 3D-3D. It is. 4A and 4B are views showing the replacement of the cylinder lock, in which FIG. 2A is a cross-sectional view showing a state in which the stopper is moved to a cylinder lock replaceable position, and FIG. Line sectional drawing, (c) is sectional drawing in the state of Fig.4 (a). It is sectional drawing which shows the modification of a stopper. It is sectional drawing which shows the 2nd Embodiment of this invention, (a) is a figure which shows a locked state, (b) is a figure which shows the state which replaced | exchanged the cylinder lock. It is a figure which shows the 3rd Embodiment of this invention, (a) is sectional drawing which shows a locked state. It is sectional drawing which shows the lock release state of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Removable connection end 2 Lock body 3 Lock object 4 Lock object 5 Lock attachment hole 6 Cylinder lock 7 Retaining member 8 Operation part 9 Stopper 10 Movable connection end 11 Detachment side housing 12 Connection block 13 Movable side housing

Claims (5)

A locking body that releases the locked state in which the movement of the locking target is restricted by the connection of the detachable connecting end to the lock body;
A cylinder lock that is inserted into the lock mounting hole of the lock body and is mounted, restrains the lock body to the lock body in the locked state, and restricts the transition to the unlocked state; and
A locking member that can be moved forward and backward from the lock mounting hole, is locked to the cylinder lock at the protruding position to the lock mounting hole, and prevents the cylinder lock from being removed.
A stopper that is mounted on the lock body and restricts movement of the retaining member from the protruding position, and can be retracted from the restricted position by operating the operation part exposed to the outside in the unlocked state;
A locking device.   The locking portion between the retaining member and the cylinder lock is formed in a shape in which a withdrawal direction component force from the lock mounting hole is generated in the retaining member by a pulling operation force from the lock mounting hole to the cylinder lock. The locking device according to 1.   The locking device according to claim 1, wherein the retaining member is a sphere.   2. The lock body is formed in a U-shape having a movable connection end connected to a lock main body so as to be movable in an advancing and retreating direction and not removable and having a detachable connection end at the other end. 2. The locking device according to 2 or 3. The movable connection end is formed on a movable side casing connected to the other end of a connection block to which an attachment / detachment side casing having the attachment / detachment connection end is connected at one end.
5. The locking device according to claim 4, wherein the detachable housing and the movable housing are free to rotate around the central axis in the locked state.

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