JP2012188883A - Locking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a locking device which can be installed with ease to an existing lever handlebar provided to a door, can lock a swing operation of the lever handlebar, and can easily be canceled a locked state when the lever handlebar is used.SOLUTION: A locking device comprises: a lever handlebar 15 whose rotatable lever shaft 23 protrudes perpendicularly from a door surface 21 and whose lever grip part 31 perpendicular to the lever shaft 23 swings so as to enable a door 25 to be unlocked; an operation barrier member 17 which extends along the lever grip part 31 at an opposite side to a rotating direction of the lever grip part 31 so as to block a rotating operation of the lever grip part 31; and a barrier member supporting body 19 which includes a supporting shaft 35 perpendicular to the lever shaft 23, is fixed to the door 25, and supports swingably an end portion 41 of the operation barrier member 17 in a longitudinal direction with the supporting shaft 35.

Description

  The present invention relates to a lock device that regulates the operation of an operation member provided for opening and closing a door.

  A lever handle, which is an operation member for opening and closing provided on the door, is interlocked and connected to a lock device built in the door or provided in an exposed state on the door surface. The lever handle includes a shaft portion connected to the mechanism portion of the lock device and a handle portion extending in a direction orthogonal to the shaft portion, and by holding and holding this handle portion, the mechanism in the lock device is operated. The latch bolts are moved forward and backward by interlocking the parts. This locking device is generally operated from the outdoor side of the door, for example, by a lock key, and from the indoor side, the dead bolt is moved forward and backward by an operation by a thumb turn. In the operation of unlocking and opening the door, there is one having a mechanism (so-called anti-panic mechanism) in which unlocking is performed by swinging only the lever handle without using a thumb turn or the like. This unlocking mechanism using the lever handle is effective when you want to open the door immediately in an emergency. It eliminates the need for thumb turn and other operations, and only unlocks and opens the door with an emergency. Is possible. In addition, since there is no thumb turn, there is a structure in which the thumb turn is not provided.

  Such an emergency unlocking mechanism for the lever handle can be unlocked by forcibly swinging the lever handle even in the locked state. There is a risk of getting out of the door and entering a dangerous place alone. In order to prevent such a risk, for example, a locking device is provided at a high position where a small child cannot reach, or the swing of the lever handle is restricted. As a structure that regulates the swing of the lever handle, a pressing plate that engages with the shaft part of the door handle from the handle mounting seat and prevents the door handle from rotating is provided via a hinge. Covering the periphery of the operating lever with a structure that prevents the door handle from rotating (Patent Document 1 below) and a detachable, generally U-shaped plate, and attached a box-shaped lever housing, There is one that covers and restricts rocking (the following Patent Document 2).

JP-A-6-336865 Japanese Utility Model Publication No. 3-28278

  However, all of the above-described conventional structures for restricting the swing of the lever handle are detachable structures, and are attached to the lever handle when necessary, and the lever handle is continuously restricted. When not in use, the structure removed from the lever handle must be stored somewhere. Further, in each of the above patent documents, a key is essential to regulate and maintain the lever handle, and although it improves safety in the sense of a double lock, it requires storage of the key, This is also complicated. In particular, when the emergency door is opened as described above, the conventional structure may not be able to be opened due to its complexity, and it is possible to easily open the door in an emergency. Therefore, there has been a demand for a lever handle swing restricting structure having a function capable of providing sufficient safety.

  Therefore, in order to solve the above problems, the present invention can be easily assembled to an existing lever handle disposed on the door, and the swing operation of the lever handle can be locked, and It is an object of the present invention to provide a lock device that can be easily released when the lever handle is usable.

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
In the locking device according to the first aspect of the present invention, the lever shaft 23 is rotatable from the door surface 21 so as to protrude vertically, and the lever handle portion 31 perpendicular to the lever shaft 23 is rotated so that the door 25 can be unlocked. Lever handle 15 to
An operation barrier member 17 extending along the lever handle portion 31 before the lever handle portion 31 in the rotational direction and preventing the lever handle portion 31 from rotating;
A barrier member support 19 having a support shaft 35 in a direction perpendicular to the lever shaft 23 and fixed to the door 25 and rotatably supporting one end 41 in the longitudinal direction of the operation barrier member 17 by the support shaft 35. When,
It is characterized by comprising.

  In this locking device, the operation barrier member 17 is positioned in front of the lever handle portion 31 in the rotation direction, so that the operation barrier member 17 and the lever handle portion 31 are held together as they are. The operation barrier member 17 becomes a hindrance when the lever handle 31 is gripped and operated. In order to operate the lever handle 15, it is necessary to shift the operation barrier member 17 so that the lever handle 31 can be operated independently.

The locking device according to claim 2 is the locking device according to claim 1,
The operation barrier member 17 positioned along the lever handle portion 31 is rotated in a direction away from the door surface 21.

  In this locking device, when the lever handle portion 31 is operated, the operation barrier member 17 is pulled toward the front side, so that the operation barrier member 17 is displaced from a position that hinders the operation of the lever handle portion 31, and the lever handle portion 31 is moved. It can be operated independently.

The locking device according to claim 3 is the locking device according to claim 1,
A rotation direction of the operation barrier member 17 positioned along the lever handle portion 31 is a direction approaching the door surface 21.

  In this locking device, when the lever handle portion 31 is operated, the operation barrier member 17 is pushed in a direction approaching the door surface 21, so that the operation barrier member 17 is shifted from a position that hinders the operation of the lever handle portion 31. The lever handle 31 can be operated independently.

The lock device according to claim 4 is the lock device according to any one of claims 1, 2, and 3,
The operation barrier member 17 is arranged at a position along the lever handle portion 31 by an urging member.

  In this locking device, the operation barrier member 17 is held at a position in front of the lever handle portion 31 in the rotational direction by being biased by the biasing member. That is, the operation barrier member 17 is restored to the original position again by the biasing member in the movement by the contact not intended to be released. For this reason, for releasing, it is necessary to continuously apply a force in a direction in which the operation barrier member 17 is always shifted, for example, a pulling force or a pushing force.

The lock device according to claim 5 is the lock device according to any one of claims 1, 2, 3, and 4,
The rotating tip 43 of the operation barrier member 17 is curved so as to cover the gap 45 with the lever handle 31 from the side.

  In this locking device, the rotation tip 43 of the operation barrier member 17 covers the gap 45 between the lever handle 31 and the opening and release when the operation barrier member 17 and the lever handle 31 are simply arranged in parallel. The part is not formed on the extension line of the gap 45.

A lock device according to claim 6 is the lock device according to any one of claims 1, 2, 3, and 4,
The rotating front end portion 63 of the operation barrier member 61 is curved and formed in a substantially U shape so as to cover the periphery of the handle front end portion 65 of the lever handle portion 31.

  In this locking device, the rotation tip 63 of the operation barrier member 61 is substantially U-shaped so as to cover the periphery of the handle tip 65 of the lever handle 31, so that the lever handle from the handle tip 65 A gap 45 between 31 and the operation barrier member 61 is covered and hidden.

The lock device according to claim 7 is the lock device according to any one of claims 1, 2, and 3,
An edge portion 71 opposite to the door surface 21 of the operation barrier member 69 is formed to be curved so as to cover the gap 45 with the lever handle portion 31.

  In this locking device, the edge 71 on the side opposite to the door surface 21 of the operation barrier member 69 is curved so as to cover the gap 45 with the lever handle portion 31, so that the front from the position facing the door surface 21 is formed. In view, the gap 45 between the operation barrier member 69 and the lever handle 31 is hidden.

  According to the locking device of the first aspect of the present invention, simply by grasping the lever handle portion of the lever handle, it is grasped together with the operation barrier member, and unlocking and opening operation are impossible. As a result, the swing operation of the lever handle cannot be used and can be locked. Further, when the lever handle can be used, the locked state can be easily released by shifting the operation barrier member. Furthermore, it can be easily assembled to an existing lever handle.

  According to the lock device of the second aspect, the release of the operation barrier member is not simple compared with the pushing direction, and the safety is improved.

  According to the lock device of the third aspect, the operation barrier member can be easily released compared to the pulling direction, and the operability is improved. Further, since the operation barrier member does not pop out at the time of operation, it is difficult to become an obstacle.

  According to the lock device of the fourth aspect, by incorporating the urging member, the restricted state by the operation barrier member can be made normal, the door cannot be easily opened, and the safety is improved.

  According to the lock device of the fifth aspect, the clearance tip can be concealed and the safety can be improved by making the rotation tip of the operation barrier member a curved shape along the lever handle.

  According to the lock device of the sixth aspect, the gap can be hidden by forming the rotation tip portion of the operation barrier member in a substantially U shape so as to cover the periphery of the handle tip portion. Thereby, the clearance gap between the lever handle part and the operation barrier member from the handle tip part is covered, and the safety can be further improved.

  According to the lock device of the seventh aspect, the gap can be hidden by forming the edge portion on the side opposite to the door surface of the operation barrier member so as to cover the gap with the lever handle portion. Thereby, in the front view, the gap between the operation barrier member and the lever handle portion is covered, and safety can be improved.

It is a perspective view of the locking device concerning the present invention. It is a front view of the lock device shown in FIG. (A) is operation | movement explanatory drawing which planarly viewed the normal state, (b) is operation | movement explanatory drawing which planarly viewed the time of lever operation to which the operation barrier member was moved. (A) is operation | movement explanatory drawing which planarly viewed the normal state of the locking device concerning 2nd Embodiment, (b) is operation | movement explanatory drawing which planarly viewed the time of the lever operation to which the operation barrier member was moved. It is a perspective view of the locking device which concerns on 3rd Embodiment in which the support shaft was offset from the extension line | wire of the operation barrier member. FIG. 6 is a plan view of FIG. 5. It is a perspective view of the locking device which concerns on 4th Embodiment by which the rotation front-end | tip part of the operation barrier member was curvedly formed in the substantially U shape so that the circumference | surroundings of the grip front-end | tip part might be covered. It is a perspective view of the locking device which concerns on 5th Embodiment by which the edge part on the opposite side to the door surface of the operation barrier member was curvedly formed so that a clearance gap might be covered. It is the side view which looked at FIG. 8 from the rotation front end side of the operation barrier member. It is a front view of the lock device concerning a 6th embodiment arranged with a support shaft offset.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of a locking device according to the present invention, and FIG. 2 is a front view of the locking device shown in FIG.
In the present embodiment, a case where the locking device according to the invention is a lever handle lock 13 will be described as an example. The lever handle lock 13 includes a lever handle 15, an operation barrier member 17, and a barrier member support 19 as main components. The lever handle 15 protrudes vertically from the door surface 21 with the lever shaft 23 being rotatable. The lever handle 15 is provided inside and outside the door 25, and is rotated integrally by a not-shown angular axis. The square shaft passes through a lock mechanism (not shown) provided in the door 25, and the rotation operating force of the lever handle 15 is transmitted to the lock mechanism via the square shaft, so that the latch bolt 29 that protrudes at the door mouth 27. Alternatively, a dead bolt (not shown) is moved forward and backward.

  The lever handle lock 13 can be suitably used for a so-called anti-panic mechanism (not shown) that can release the locked state in an emergency or the like. While the anti-panic mechanism enables locking / unlocking by thumb turn, when the lever handle 15 is turned strongly in an emergency, the locking state is released and the door 25 can be opened immediately in an emergency. . Of course, the lever handle lock 13 may not be provided with this anti-panic mechanism, but may be configured with a simple lock function.

  The lever handle 15 enables the door 25 to be unlocked by the rotation of the lever handle 31 perpendicular to the lever shaft 23. The lever handle 31 is operated by rotating, for example, approximately 45 ° clockwise from the state shown in FIG. The lever shaft 23 is rotatable through an escation 33 fixed to the door surface 21.

  The operation barrier member 17 is disposed before the lever handle portion 31 in the rotational direction and above the lever handle portion 31 shown in FIG. 2 in the present embodiment. The operation barrier member 17 extends along the upper edge of the lever handle portion 31 and prevents the lever handle portion 31 from being directly gripped, thereby preventing the lever handle portion 31 from rotating.

  The barrier member support 19 has a support shaft 35 in a direction perpendicular to the lever shaft 23 and is fixed to the door 25. In the present embodiment, the direction perpendicular to the lever shaft 23 is the vertical direction in FIG. For example, the barrier member support 19 is secured to the door 25 via the base member 37 to ensure strength. In the present embodiment, a column body portion 39 projects from the base member 37, and a support shaft 35 is provided at the projecting tip of the column body portion 39. The barrier member support 19 supports the one end 41 in the longitudinal direction of the operation barrier member 17 on the support shaft 35 so as to be freely rotatable.

  As a result, the rotation direction of the operation barrier member 17 positioned along the lever handle 31 is away from the door surface 21. That is, in the present embodiment, the operation barrier member 17 disposed along the lever handle portion 31 is not rotated in the direction approaching the door 25. In the locking device according to the invention, the rotation direction of the operation barrier member 17 is not limited to this.

  The operation barrier member 17 is preferably disposed at a position along the lever handle portion 31 by a biasing member (not shown). Examples of the urging member include a helical spring, a coil spring, and a leaf spring. The operation barrier member 17 is urged by the urging member, whereby the operation barrier member 17 is held at a position before the lever handle portion 31 in the rotation direction. That is, the operation barrier member 17 is restored to the original position again by the biasing member in the movement by the contact not intended to be released. For this reason, in order to release, it is necessary to continuously apply a force in a direction in which the operation barrier member 17 is always shifted. Thus, by incorporating the biasing member, the restricted state by the operation barrier member 17 can be made normal, the door cannot be easily opened, and safety is improved.

  In addition, it is preferable that the operation barrier member 17 is curved and formed so that the rotation tip portion 43 covers the gap 45 with the lever handle portion 31 from the side. The rotating front end 43 of the operation barrier member 17 covers the gap 45 between the lever handle portion 31 and the separation opening portion when the operation barrier member 17 and the lever handle portion 31 are simply arranged in parallel is the gap 45. It is not formed on the extension line L. By making the rotation front end 43 of the operation barrier member 17 into a curved shape along the lever handle 31, the gap 45 can be hidden and safety can be improved.

Next, the operation of the lever handle lock 13 having the above configuration will be described.
FIG. 3A is an operation explanatory diagram in plan view of the normal state, and FIG. 3B is an operation explanatory diagram in plan view when the lever of the operation barrier member 17 is moved.
When the lever handle lock 13 is not operated normally, as shown in FIG. 3A, the operation barrier member 17 is positioned along the upper edge that is in front of the rotation direction of the lever handle portion 31. As it is, both the operation barrier member 17 and the lever handle 31 are gripped. That is, the operation barrier member 17 becomes an obstacle when the lever handle 31 is gripped and operated. In this state, the lever handle 15 cannot be swung, and inadvertent unlocking and door opening operations using the lever handle 15 can be prevented. That is, the lever handle lock 13 functions as a simple locking / unlocking device.

  Further, when the anti-panic mechanism described above is provided, even if the locking / unlocking mechanism is in the locked state, if the operation barrier member 17 is moved and the lever handle 15 is operated strongly, the thumb turn (not shown) Unlocking is possible without performing the unlocking operation. In other words, even if the anti-panic mechanism is provided, if the operation barrier member 17 is not moved, the forced unlocking will not function by the anti-panic mechanism. As a result, a small child can be prevented from forcibly unlocking only by strongly operating the lever handle 15. Further, since the anti-panic mechanism functions only by moving the operation barrier member 17, the immediate opening of the door 25 in an emergency is not prevented.

  In order to operate the lever handle 15, as shown in FIG. 3B, it is necessary to shift the operation barrier member 17 so that the lever handle 31 can be operated independently. That is, unlocking and opening operation with both hands. By shifting the operation barrier member 17, there is no barrier to the operation before the lever handle portion 31 in the operation direction, and the lever handle portion 31 can be operated independently. From this state, the lever handle lock 13 is unlocked and opened by rotating the lever handle 31.

  Further, in the lever handle lock 13 according to the present embodiment, when the lever handle portion 31 is operated, the operation barrier member 17 is pulled toward the front side, so that the operation barrier member 17 can be moved from a position that hinders the operation of the lever handle portion 31. The lever handle 31 can be operated independently. The release of the operation barrier member 17 is not easy compared to the pushing direction, and safety is improved.

Next, a lever handle lock 47 according to a second embodiment of the present invention will be described.
FIG. 4A is an operation explanatory view in plan view of the normal state of the lock device according to the second embodiment, and FIG. 4B is an operation explanatory view in plan view when the lever of the operation barrier member 17 is moved. . In the following embodiments, members that are the same as those shown in FIGS. 1 to 3 are given the same reference numerals, and redundant descriptions are omitted.
In the lever handle lock 47, the rotation direction of the operation barrier member 17 positioned along the lever handle 31 is a direction approaching the door surface 21. When the lever handle portion 31 is operated, the operation barrier member 17 is pushed in a direction approaching the door surface 21, so that the operation barrier member 17 is shifted from a position that hinders the operation of the lever handle portion 31, and the lever handle portion 31. Can be operated independently.
According to the lever handle lock 47, the operation barrier member 17 can be easily released compared to the pulling direction, and the operability is improved. Moreover, since the operation barrier member 17 does not pop out to the front during operation, it is difficult to become an obstacle.

  In addition, the operation barrier member 17 is configured to be able to move both in a direction approaching the door surface 21 and in a direction away from the door surface 21 from a position disposed along the lever handle 31. You can also. According to this configuration, inadvertent unlocking and opening operation by using the lever handle 15 can be prevented, and the operability is further improved.

Next, a lever handle lock 49 according to a third embodiment of the present invention will be described.
FIG. 5 is a perspective view of the locking device according to the third embodiment in which the support shaft 35 is offset from the extension line of the operation barrier member 51, and FIG. 6 is a plan view of FIG.
In the lever handle lock 49, a barrier member support 53 including a support shaft 35 is fixed to the door surface 21 with a protruding height smaller than that of the barrier member support 19. Therefore, as shown in FIG. 6, the support shaft 35 is arranged so as to be offset in a direction approaching the door surface 21 from the extension line of the operation barrier member 51. A bent portion 57 is formed at the support end portion 55 of the operation barrier member 51, and the bent portion 57 is connected to the support shaft 35.
According to the lever handle lock 49, the connecting portion between the barrier member support 53 and the operation barrier member 51 does not protrude as a corner portion, and it is difficult to interfere with the body or a transported object.

Next, a lever handle lock 59 according to a fourth embodiment of the present invention will be described.
FIG. 7 is a perspective view of the locking device according to the fourth embodiment in which the rotation tip 63 of the operation barrier member 61 is curved and formed in a substantially U shape so as to cover the periphery of the handle tip 65.
The lever handle lock 59 is formed in a substantially U-shape so that the rotation tip 63 of the operation barrier member 61 covers the periphery of the handle tip 65 of the lever handle 31. The rotation tip portion 63 of the operation barrier member 61 is substantially U-shaped so as to cover the periphery of the handle tip portion 65 of the lever handle portion 31, so that the lever handle portion 31 and the operation barrier member from the handle tip portion 65 are formed. The gap 45 with 61 is covered and hidden from the side (from the front end side).
According to the lever handle lock 59, the gap 45 between the lever handle 31 and the operation barrier member 61 from the handle tip 65 can be covered, and safety can be further improved.

Next, a lever handle lock 67 according to a fifth embodiment of the present invention will be described.
FIG. 8 is a perspective view of the lock device according to the fifth embodiment in which the edge 71 opposite to the door surface 21 of the operation barrier member 69 is curved so as to cover the gap 45, and FIG. 9 is a perspective view of FIG. It is the side view seen from the rotation front end side.
The lever handle lock 67 is curved so that the edge 71 opposite to the door surface 21 of the operation barrier member 69 covers the gap 45 between the lever handle 31 and the lever handle lock 67. That is, the front edge portion of the operation barrier member 69 is curved. When viewed from the front, the upper surface 75 is covered from the upper edge 73 of the lever handle 31. Thereby, the gap 45 between the operation barrier member 69 and the lever handle 31 is hidden in a front view from the position facing the door surface 21.
According to the lever handle lock 67, the gap 45 between the operation barrier member 69 and the lever handle portion 31 is covered in a front view, and an object cannot be inserted into the gap 45 from the front side, thereby improving safety. be able to. Moreover, it covers along the lever handle part 31, and an external appearance becomes favorable.

Next, a lever handle lock 77 according to a sixth embodiment of the present invention will be described.
FIG. 10 is a front view of the lock device according to the sixth embodiment in which the support shaft 35 is disposed offset.
In the lever handle lock 77, the barrier member support 79 is disposed below the lever shaft 23. Therefore, the support shaft 35 is disposed so as to be offset downward from the extension line of the operation barrier member 81. An inclined connecting portion 83 is formed at the support end portion 55 of the operation barrier member 81, and the inclined connecting portion 83 is connected to the support shaft 35.
According to the lever handle lock 77, the operation barrier member 81 hits the lever handle portion 31 even when an excessive downward force is applied in a state where the operation barrier member 81 is not moved. Thereby, it is possible to prevent an excessive force from being applied to the barrier member support 79, and to improve the durability of the barrier member support 79.

  Therefore, according to the locking device according to each of the above-described embodiments, simply grasping the lever handle portion 31 of the lever handle 15 grasps it together with the operation barrier members 17, 51, 61, 69, 81, so that Locking and opening operation become impossible. Thereby, the swing operation of the lever handle 15 can be locked. Further, when the lever handle 15 can be used, the locked state can be easily released by shifting the operation barrier members 17, 51, 61, 69, 81. Furthermore, it can be easily assembled to the existing lever handle 15.

  In each of the above-described embodiments, the case where the barrier member support 19 and the like are provided on the door tip side of the door 25 has been described. However, the barrier member support 19 may be provided on the handle tip side opposite to this.

13, 47, 49, 59, 67, 77 ... Lever handle lock (locking device)
DESCRIPTION OF SYMBOLS 15 ... Lever handle 17 ... Operation barrier member 19 ... Barrier member support body 21 ... Door surface 23 ... Lever axis | shaft 25 ... Door 31 ... Lever handle part 35 ... Support axis 41 ... One end part in a longitudinal direction 43 ... Rotation tip part 45 ... Gap 65 ... tip end of handle 71 ... edge on opposite side

Claims (7)

A lever handle allowing the lever shaft to rotate freely from the door surface and projecting vertically, and a lever handle perpendicular to the lever shaft to rotate to unlock the door;
An operation barrier member that extends along the lever handle portion in front of the lever handle portion in the rotation direction and prevents the lever handle portion from rotating;
A barrier member support having a support shaft in a direction perpendicular to the lever shaft and fixed to the door and rotatably supporting one end in the longitudinal direction of the operation barrier member on the support shaft;
A locking device comprising: The locking device according to claim 1,
The locking device according to claim 1, wherein a rotation direction of the operation barrier member positioned along the lever handle is a direction away from the door surface. The locking device according to claim 1,
The locking device according to claim 1, wherein a rotation direction of the operation barrier member positioned along the lever handle portion is a direction approaching the door surface. The locking device according to any one of claims 1, 2, and 3,
The locking device according to claim 1, wherein the operation barrier member is disposed at a position along the lever handle by an urging member. The locking device according to any one of claims 1, 2, 3, and 4,
The locking device according to claim 1, wherein a rotation tip portion of the operation barrier member is curved so as to cover a gap with the lever handle portion from a side. The locking device according to any one of claims 1, 2, 3, and 4,
The locking device is characterized in that a rotating tip end portion of the operation barrier member is curved and formed in a substantially U shape so as to cover the periphery of the handle tip end portion of the lever handle portion. The locking device according to any one of claims 1, 2, and 3,
The locking device, wherein an edge portion of the operation barrier member opposite to the door surface is curved so as to cover a gap with the lever handle portion.

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