JP2008150800A - Lock device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lock device capable of exerting waterproof performance over a long period of time. <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 connecting an attachment/detachment connecting end 1 to a lock body 2, by disconnecting the connecting end 1; a locking portion 6 which is arranged in the lock body 2, and which maintains the locked state by locking a portion 5 to-be-locked of the locking body 4; and an elastic seal body 8 for sealing a locking-body inserting hole 7 which allows the insertion of the portion 5 of the locking body 4. The elastic seal body 8 is fixed to either of the lock body 2 and the locking body 4; and a seal-body fitting recess 9, which is externally fitted to the elastic seal body 8 in the locked state so as to cover a peripheral edge of the elastic seal body 8, and which applies a predetermined sealing pressure to the elastic seal body 8, is formed in the other one of the lock body 2 and the locking body 4. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a locking device.

  As a lock device that includes a lock body that advances and retreats from the lock body and prevents water from entering into the lock body from the sliding clearance of the lock body, one disclosed in Patent Document 1 is known. This conventional example relates to a so-called padlock in which one end of a U-shaped arm (locking body) is connected to a lock body, and a cushion ring (elastic seal body) whose periphery is protected by an umbrella is fixed to the locking body. The

When the lock body is moved to the lock position, the ring protruding from the lock body side comes into pressure contact with the elastic seal body, and the contact interface is sealed.
Japanese Utility Model Publication No. 49-24694

  However, in the above-described conventional example, the elastic seal body is almost housed inside the umbrella in the locked state and the exposed area to the outside air is small, but it still has an exposed portion to the outside air, so it is used for a long time. At this time, there is a drawback in that the deterioration of the elastic sealing body progresses from the exposed portion to the inside, and as a result, the sealing performance cannot be exhibited.

  The present invention has been made to eliminate the above drawbacks, and an object of the present invention is to provide a locking device that can exhibit waterproof performance for a long period of time.

  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.

  The lock portion 6 disposed in the lock body 2 is locked to the locked portion 5 formed on the lock body 4 in the locked state, restricts the movement of the lock body 4, and maintains the lock state. As described above, when the locking body 4 is engaged with or disengaged from the lock body 2 only at the detachable connecting end 1 or when the opposite end of the detachable connecting end 1 is a linear body, the detachable connecting end 1 is engaged. A stop 5 is formed. On the other hand, when the opposite end of the detachable connecting end 1 becomes the movable connecting end 10 that moves with the transition between the locked state and the unlocked state, the locked portion 5 is connected to the movable connecting end 10 or the detachable connecting end 10. It is formed on either one of the connecting ends 1.

  The elastic seal body 8 prevents water from entering the locking body insertion hole 7 through which the locked portion 5 is inserted, and prevents malfunction due to corrosion, freezing or the like of the lock portion 6 which is a mechanism portion. The elastic seal body 8 is fixed to either the lock body 4 or the lock body 2 and is crushed by the seal body fitting recess 9 formed on the other side as the lock body 4 moves to the locked state. The seal body fitting recess 9 is in close contact with the wall surface.

  Therefore, in the present invention, when the lock device is in the locked state, water intrusion into the lock body insertion hole 7 communicating with the lock portion 6 is reliably prevented. There is no risk of malfunction due to rusting or freezing. In addition, since the elastic seal body 8 is almost entirely covered with the wall surface of the seal body fitting recess 9 in the locked state, it is possible to prevent deterioration of the elastic seal body 8 due to exposure to the outside air, such as ultraviolet light deterioration. The sealing performance is maintained for a long time.

  Furthermore, when the metal ring 14 surrounding the elastic seal body 8 is fixed to the side to which the elastic seal body 8 is fixed (for example, the lock body 4 side) and is externally fitted by the seal body fitting recess 9 in the locked state, the seal body A gap generated at the boundary between the peripheral edge of the fitting recess 9 and the locking body 4 is blocked by the metal ring 14 from the inside of the seal body fitting recess 9. As a result, the exposed area of the elastic seal body 8 to the outside air is further reduced, and resistance to unauthorized destruction operation by cutting the elastic seal body 8 and the locked portion 5 by inserting a blade or the like through the gap. Will also improve.

  According to the present invention, since the deterioration of the elastic seal body hardly occurs, the waterproof performance can be exhibited for a long time.

  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 part block 12 is formed in an L-shape in front view by extending the fixed end of the movable side casing 13 in the axial length direction of the movable side casing 13, and is fitted on an elastic seal body 8 described later on the lower end surface of the extension part. A mating seal body fitting recess 9 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 side housing 13 and the detachable side housing 11 are connected so as not to be removed by a retaining pin 12a driven into the connecting block 12. The retaining pin is driven so as to be engaged with the narrow-diameter portion 15 formed at the upper end of the housings 13 and 11 and enables the housings 13 and 11 to be idled in a connected state. A hole for mounting the retaining pin 12a is filled with a buried metal (berry metal 12b) so as not to induce an unauthorized removal operation to the retaining pin 12a.

  Further, a retaining portion 13 a and a locked portion 5 are formed at the lower end portion of the movable housing 13. The retaining portion 13a and the locked portion 5 are formed by utilizing a step between the small-diameter portion 13b and the general portion formed on the movable side housing 13.

  On the other hand, the lock body 2 is formed by accommodating a cylinder lock 16 in a lock case 2a. The lock case 2 a is formed with a lock body insertion hole 7 and a lock fitting hole 2 b 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 7. The movable side housing 13 is inserted. A compression spring 17 is interposed between the lower end of the movable housing 13 and the bottom wall of the locking body insertion hole 7 to urge the locking body 4 upward.

  As shown in FIG. 2, the movable side housing 13 is prevented from coming off by locking a retaining pin 18 driven into the lock case 2a to the retaining portion 13a. As shown in FIGS. 1 and 2, the narrow-diameter portion 13b formed in the movable housing 13 to form the retaining portion 13a 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 2b corresponds to the locked state.

  As shown in FIG. 1, the lock body 4 and the lock body 2 form a closed loop in the locked state, 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 2b. 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 6. The lock portion 6 includes a lock piece 6 a that advances and retreats into the locking body insertion hole 7, and a compression spring 6 b that urges the lock piece 6 a in the protruding direction into the locking body insertion hole 7. The lock piece 6a has a locking tip 6c 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 5 of the locked body 4 in the locked state.

  The lateral hole 2c opened in the lock case 2a for accommodating the lock piece 6a is closed using the belly metal 2d after the assembly work is completed, and the tampering operation using the opening is prevented from being induced.

  Therefore, in this embodiment, when the locking body 4 is pushed in from the unlocked state, the lock piece 6a once retracts from the locking body insertion hole 7 against the urging force of the compression spring 6b and then returns to the original position again. The locking body 4 is locked to the locked portion 5 and thereafter the movement in the unlocking direction is restricted. The retaining portion 13a of the movable side housing 13 and the narrow-diameter portion 13b for forming the locked portion 5 are cross-sectional shapes that do not interfere with the retaining pin 18 and the lock piece 6a due to the rotational posture (in this embodiment) Therefore, idling around the axis of the movable housing 13 is allowed even in the locked state.

  In this embodiment, which automatically shifts to a lock state that cannot be released by movement to the lock position, the cylinder lock 16 is provided to release the restraint by the lock portion 6. The cylinder lock 16 is formed by rotatably inserting a plug 16b into a cylinder case 16a, and is inserted into a lock mounting hole 19 with an open end facing the lower surface. A cam 16c is connected to the plug 16b, and the lock piece 6a is moved in the unlocking direction by rotating the plug 16b 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 19 is closed by a cover plate 20 that can be rotated around the rotation shaft 20a so that water, dust, and the like do not enter the plug 16b in use.

  In this embodiment, the cylinder lock 16 is detachably mounted in the lock mounting hole 19 using a ball 21 and a stopper 22. The ball 21 is inserted into the lateral hole 2e opened from the outer peripheral wall of the lock case 2a toward the lock mounting hole 19 so as to roll freely, and as shown in FIGS. Engage / disengage with the recess 16d. After the ball 21 is inserted, the horizontal hole 2e is closed using the belly metal 2d, thereby preventing an illegal destruction operation using the opening.

  The stopper 22 is a bowl-shaped member having a large-diameter head 22a at the upper end, and is inserted into a stopper insertion hole 23 extending downward from the lock fitting hole 2b. A male screw 22b is formed on the large-diameter head portion 22a and is screwed into the stopper insertion hole 23 using a slit 22c formed at the upper end.

  In the stopper 22, a restricting portion 22d having a large diameter and a restriction releasing portion 22e having a small diameter are arranged in the axial length direction, and as shown in FIG. 4B, the restricting portion 22d. The movement of the ball 21 to the unlocking position is restricted with the ball 21 in contact with the ball 21. In order to remove the cylinder lock 16 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. To expose the slit 22b.

  Next, using this slit, as shown in FIG. 4, when the stopper 22 is moved to a position where the restriction release portion 22e faces the horizontal hole 2e or until it is completely removed, the movement restriction on the ball 21 is released. The When a pulling force is applied to the cylinder lock 16 in this state, the ball 21 receives a component force from the retaining recess 16d and moves in the direction of releasing the locking with the retaining recess 16d, whereby the cylinder lock 16 can be pulled out.

  In order to prevent water from entering the lock body 2 in the locked state, that is, in use, the lock body insertion hole 7 is sealed by an elastic seal body 8 formed of a material having elasticity such as synthetic rubber. 2 and 3B, the elastic sealing body 80 on the lock fitting hole 2b side is formed in a ring shape, and a step between the large-diameter head portion 22a of the stopper 22 and the stopper insertion hole 23 is formed. It is inserted between the parts.

  As shown in FIGS. 2 and 3 (c), the elastic sealing body 8 on the side of the locking body insertion hole 7 is formed by expanding the upper and lower cylindrical portions 8b and 8c at the eccentric position of the circular seat portion 8a, and the seat portion 8a. The rivet 24 is used to fix the lock body 2 to the lock case 2a. Between the seat portion 8a and the surface portion of the lock case 2a, a metal ring 14 having the same outer diameter as the seat portion 8a is fastened together by the rivet 24, and the cylindrical portion 8c is pressed.

  The elastic seal body 8 is fixed in a state where the lower cylindrical portion 8 c is fitted to the metal ring 14, and the movable side housing 13 of the locking body 4 is inserted through a through hole 8 d formed in the elastic seal body 8. Then, it is inserted into the locking body insertion hole 7.

  Therefore, in this embodiment, as shown in FIG. 1, in the locked state, the elastic seal body 8 is fitted into the seal body fitting recess 9 of the locking body 4 and pressed from above. As a result, the gaps between the portions formed between the outside of the locking device and the locking body insertion hole 7 are completely closed by the elastically deformed elastic seal body 8, so that the water immersion into the locking body insertion hole 7 is ensured. Protected.

  In the locked state, the elastic seal body 8 is covered almost entirely by the metal ring 14 at the lower part of the side surface and the wall surface of the seal body fitting recess 9 at the upper part. 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.

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).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Removable connection end 2 Lock body 3 Lock object 4 Lock object 5 Locked part 6 Locked part 6 Lock part 7 Locking body insertion hole 8 Elastic seal body 9 Seal body fitting recessed part 10 Movable connection end 11 Removable side housing 12 Connection block 13 Movable side Housing 14 Metal ring

Claims (5)

A locking body that releases the lock state in which the movement of the lock target is restricted by the connection of the detachable connection end to the lock body;
A lock portion that is disposed within the lock body and holds the locked portion by locking the locked portion of the locking body;
An elastic sealing body that seals the locking body insertion hole through which the locked portion of the locking body is inserted;
The elastic seal body is fixed to one of the lock body and the lock body, and the other is fitted to the elastic seal body in a locked state to cover the periphery of the elastic seal body, and the elastic seal body A locking device in which a sealing body fitting recess for applying a predetermined sealing pressure is formed.   The locking body includes the locked portion, and has a movable connection end that is movable and non-detachably connected to the lock body, and is formed in a U shape with both ends of the detachable connection end. The locking device according to claim 1. 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.
4. The locking device according to claim 3, wherein a seal body fitting recess is formed on the fixed base end surface of the movable side housing of the connecting block.   4. The lock device according to claim 1, wherein the detachable connecting end is free to rotate around a central axis in a locked state.   5. The metal ring that surrounds the periphery of the elastic seal body and that is externally fitted with the seal body fitting recess in the locked state is fixed to the fixed side member of the elastic seal body. The locking device according to 1.

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