JP2003301642A - Emergency unlocking device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent re-locking due to erroneous operation or the like during emergency opening thereby permitting to continue to keep an open state. <P>SOLUTION: In an emergency unlocking device 71, a cylinder 5 supporting a cylinder 7 at the inner side, a connector 23 for connecting a rotating piece 17 to a lock mechanism portion of the cylinder 7, a barrel-shaped emergency open handle 41 extrapolated to the cylinder 5 in a freely rotatable manner, a pin 35 directly coupled to the connector 23 and protruded to the outer side in radius direction, and a reverse rotation preventing plate 49 are provided; and this plate 49 has a hook arm and is installed in a freely movable manner in an axis line direction inside the inner periphery of an emergency open handle 41 and non-linkage state to the cylinder barrel 5 is maintained by hooking the hook arm to the pin 35 directly coupled to the connector, and the plate 49 which links to the cylinder barrel 5 by protruding in the axis line direction by releasing the linkage of the hook arm to the pin 35 directly coupled to the connector by the rotation of the emergency open handle 41 and by using an energizing means 53. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emergency unlocking device that can be unlocked without using a key, and more particularly to an improved technique for preventing re-locking at the time of emergency opening.

[0002]

2. Description of the Related Art It is desirable that an emergency door or the like can be locked under normal circumstances due to security concerns, but it is desirable that it can be easily unlocked without using a key during an emergency such as a fire. As a locking device used for such an emergency door, there has been an emergency unlocking device. The emergency unlocking device includes a cylinder and an emergency open handle.

In the emergency unlocking device, normally, the lock / unlock mechanism of the lock box provided inside the emergency door is operated by rotating the cylinder by the key, and the dead box is removed from the lock box as in the normal lock device. It is possible to lock and unlock the emergency door by moving back and forth. On the other hand, in the event of an emergency such as a fire, the normally open cover that is normally covered is exposed and operated to directly rotate the input member (so-called dharma) of the lock box without using a key, and the dead bolt. It was possible to unlock the tablet by retracting it into the lock box.

[0004]

However, in the conventional emergency unlocking device, since both the unlocking operation force and the locking operation force can be transmitted to the lock box by the emergency open handle, in the event of an emergency. After unlocking using the emergency open handle, if the emergency open handle was operated due to an erroneous operation, the emergency door etc. were locked again.

In particular, since quick withdrawal is the most important factor for safety in case of emergency such as fire, it is not preferable to be able to re-lock due to such an erroneous operation. That is, in an emergency, it is desirable that the unlocked state is maintained when unlocked using the emergency open handle.

The present invention has been made in view of the above circumstances, and provides an emergency unlocking device which can prevent re-locking due to an erroneous operation at the time of emergency opening and can keep the opened state,
Therefore, it is intended to improve the reliability of the emergency unlocking device.

[0007]

[Means for Solving the Problems] Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments. Emergency unlocking device 7 according to claim 1 of the present invention
1 is a cylinder tube 5 that supports a cylinder 7 inside
And a rotatable piece 1 provided in the cylinder 7
7, a connector 23 that connects the lock mechanism portion with the lock mechanism 7, a cylindrical emergency open handle 41 that is rotatably inserted into the cylinder tube 5, and a connector direct connection pin 35 that is provided on the connector 23 and projects radially outward. And a latch arm 51, which is provided on the inner circumference of the emergency open handle 41 so as to be movable in the axial direction, and hooks the latch arm 51 on the connector direct connection pin 35 to disengage from the cylinder cylinder 5. While maintaining the state, the locking of the locking arm 51 to the connector direct connection pin 35 is released by the rotation of the emergency open handle 41, and the urging means 53 projects in the axial direction to engage with the cylinder tube 5. And a reverse rotation prevention plate 49.

In this emergency unlocking device 71, the emergency open handle 41 is rotated, and the connector 23 is directly rotated through the connector direct connection pin 35 hooked on the reverse rotation prevention plate 49, so that the lock mechanism portion in the lock box 3 is opened. In the case of directly unlocking, when the emergency open handle 41 is again rotated to lock, the latch arm 51 of the reverse rotation preventing plate 49 is separated from the connector direct connection pin 35, and the reverse rotation preventing plate 49 is locked by the connector direct connection pin 35. Is released. Then, the reverse rotation prevention plate 49 is moved in the axial direction by the biasing means 53, engages with the cylinder tube 5, and blocks further rotation of the emergency open handle 41. This prevents re-locking by the emergency open handle 41.

The emergency unlocking device 71 according to a second aspect is the emergency unlocking device 71 according to the first aspect, wherein the emergency unlocking device 71 is at each position corresponding to the end of rotation in the rotation range of locking and unlocking of the cylinder 7. A pair of reverse rotation prevention plates 49, 49 are provided on the inner circumference of the open handle 41, and the pair of reverse rotation prevention plates 49, 49 are formed in a symmetrical shape such that the tips of the latch arms 51 face each other.

In this emergency unlocking device 71, the cylinder 7
(EN) An emergency unlocking device capable of preventing re-locking by changing the position of the connector direct connection pin 35 regardless of the rotating direction of the rotating operation for locking and unlocking That is, it is possible to obtain a configuration in which the emergency open handle 41 has no right-left hand.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of an emergency unlocking device according to the present invention will be described in detail below with reference to the drawings.
1 is a cross-sectional view of an emergency unlocking device according to the present invention, FIG. 2 is a perspective view showing a cylinder tube in a top view (a) and a bottom view in (b), and FIG. 3 is a rear view of a connector (a). ), A perspective view showing the front view in (b), FIG. 4 shows a top view of the emergency open handle in (a), a bottom view in (b), and FIG.
FIG. 6 is a perspective view of a main part of the emergency unlocking device shown in FIG. 6, FIG. 6 is a sectional view of a click mechanism provided in the emergency unlocking device of FIG. 1, and FIG. 7 is a state in which the cover of the emergency unlocking device shown in FIG. 1 is attached. (A), It is a front view which showed the cover attachment / detachment state in (b).

As shown in FIG. 1, inside the emergency door 1,
It contains a lock box 3. The lock box 3 has a lock mechanism portion (not shown) internally provided, and when an operation turning power is input to an input member (so-called dharma) not shown, a dead bolt (not shown) is advanced and retracted to lock and unlock the emergency door 1. It is possible. The emergency door 1 is provided with a cylinder cylinder 5 that cannot rotate with respect to the lock box 3. The cylinder cylinder 5 may be fixed to the emergency door 1 or the lock box 3.

The cylinder cylinder 5 supports a cylinder 7 inside. As shown in FIG. 2, the cylinder tube 5
An inner cylinder exposing hole 9 is formed at the tip of the inner cylinder exposing hole 9, and the inner cylinder 11 of the cylinder 7 is exposed from the inner cylinder exposing hole 9. The cylinder 7 has a key insertion hole 13 (see FIG. 7) on the exposed end surface of the inner cylinder 11. The inner cylinder 11 is rotatable by inserting a key (not shown) into the key insertion hole 13 so that the shear lines of a plurality of tumbler pins provided inside are aligned with the boundary between the inner cylinder 11 and the outer cylinder 15. The rotation of the inner cylinder 11 that is rotatable in this way is output to the rotation piece 17 protruding from the rear end of the cylinder 7. The rotating piece 17 is rotatably provided with respect to the cylinder 7. That is, the rotating piece 17 is rotatable without being interlocked with the inner cylinder 11 and the outer cylinder, and the front end of the key inserted into the key insertion hole 13 is locked, so that the rotary piece 17 and the inner cylinder are locked together. Tube 1
It rotates in conjunction with 1.

A reverse rotation preventing projection 19 shown in FIG. 2B is fixed to the lower portion of the outer peripheral rear end of the cylinder tube 5. Further, a guide hole 21 that is long in the circumferential direction is formed in the rear end portion of the cylinder tube 5. As shown in FIG. 1, the cylinder cylinder 5 has a cylindrical connector 23 rotatably provided behind the cylinder 7.

As shown in FIG. 3, the front end surface of the connector 23 is formed with a diametrical fitting groove 25 into which the turning piece 17 of the cylinder 7 is fitted. Further, on the rear end surface of the connector 23, a cross-shaped output shaft 27 is provided so as to engage with a not-shown dharma forming the lock mechanism portion in the lock box 3 so as not to rotate relative to each other. The connector 23 has a fixing ring 31 fitted in a fixing groove 29 formed on the inner circumference of the rear end of the cylinder tube 5.
This prevents the cylinder tube 5 from falling off the rear end. The connector 23 works to transmit the rotational operation force of the cylinder 7 to the daruma of the lock box 3. As shown in FIG. 1, a spacer 33 is provided in the gap between the cylinder 7 and the connector 23 to support the connector 23 with respect to the cylinder 7 during rotation.

As shown in FIG. 1, the connector 23 has
The connector direct connection pin 35 is provided so as to project outward in the radial direction. The connector direct connection pin 35 projects from the outer peripheral surface of the cylinder cylinder 5 through the guide hole 21 of the cylinder cylinder 5. Therefore, when the connector 23 rotates, the connector direct connection pin 35 reciprocates in the circumferential direction of the cylinder tube 5 along the guide hole 21.

A cylinder decoration tube 39 is attached to the tip of the cylinder tube 5 protruding from the emergency door 1. A cylindrical emergency open handle 41 is externally fitted on the outer periphery of the cylinder cylinder 5. As shown in FIG. 4, the emergency open handle 41
Is provided with a substantially triangular plate-shaped finger hook plate 43 on the upper and lower surfaces of the outer peripheral front end.

Further, the emergency open handle 41 is formed with mounting grooves 44, 44 on the inner peripheral surface for mounting a later-described reverse rotation preventing plate. Further, a through hole 45 that is long in the circumferential direction is formed in the lower rear end of the emergency open handle 41. In the present embodiment, the connector direct connection pin 35 protruding from the guide hole 21 of the cylinder tube 5 also enters the through hole 45. Note that the connector direct connection pin 35 does not necessarily need to be projected from the through hole 45 of the emergency open handle 41 because it is an essential requirement to engage with a reverse rotation prevention plate described later.

On the inner circumference of the emergency open handle 41, a reverse rotation prevention plate (stopper board) 49 shown in FIG. 5, which is movable in the axial direction, is provided. The stopper board 49 is
It has a latch arm 51 projecting in the circumferential direction orthogonal to the axis, and is formed in a substantially T shape. A coil spring 53, which is a biasing means, is provided inside the emergency open handle 41, and the coil spring 53 biases the stopper board 49 in a direction projecting from the rear end side of the emergency open handle 41.

As shown in FIG. 5, the stopper board 49 hooks the latch arm 51 to the connector direct connection pin 35 protruding from the guide hole 21 of the cylinder cylinder 5 to prevent the reverse rotation preventing projection 19, that is, the cylinder cylinder 5. The non-engaged state is retained. On the other hand, when the emergency open handle 41 is rotated in the direction of arrow a in FIG. 5, the stopper board 49 and the coil spring 53 move together with the emergency open handle 41, and the hooking of the latch arm 51 with respect to the connector direct connection pin 35 is released. It As a result, the stopper board 49
Is projected from the rear end side of the emergency open handle 41 by the urging force of the coil spring 53 and engages with the reverse rotation preventing projection 19 to prevent the emergency open handle 41 from rotating in the same direction.

As shown in FIG. 6, a concave portion 55 is formed on the outer periphery of the cylinder cylinder 5, and a click pin 57 having a substantially spherical tip is provided in the concave portion 55. A spring 59 is provided between the bottom surface of the recess 55 and the click pin 57, and the spring 59 urges the click pin 57 in the direction of projecting from the outer periphery of the cylinder cylinder 5. On the other hand, a recess 60 into which the tip of the click pin 57 enters is formed on the inner peripheral surface of the emergency open handle 41. That is, the emergency open handle 41 is prevented from rotating below a predetermined rotational moment. As a result, even if the connector direct connection pin 35 moves, the emergency opening handle 4
The co-rotation of 1 is blocked.

In this embodiment, as shown in FIG. 9D, the pair of stopper boards 49, 49 make the line parallel to the axis on the outer peripheral surface of the cylinder cylinder 5 symmetrical, and It is arranged around the circumference. These stopper boards 49, 49 have symmetrical shapes such that the tips of the respective latch arms 51, 51 face each other, and each position corresponding to the end of rotation in the rotation range of locking and unlocking of the cylinder 7, that is, the present embodiment. In the embodiment, since the cylinder 7 is locked and unlocked within a range of about 90 °, the cylinder 7 is provided at both end positions of the through hole 45 of the emergency open handle 41 formed in the circumferential direction corresponding to this rotation range. To be With these stopper boards 49, 49, in the emergency unlocking device 71 of the present embodiment, the position of the connector direct connection pin 35 is set regardless of the rotation direction of the rotation operation for locking and unlocking the cylinder 7. It is possible to obtain the emergency unlocking device that can prevent re-locking by changing the above, that is, the emergency open handle 41 can be provided with a structure without right and left.

As shown in FIG. 1, on the surface of the emergency door 1,
The locking plate 6 is provided above and below the emergency opening handle 41.
A base plate 69 provided with 1, 61 is fixed. A locking claw 65 of a box-shaped cover 63 that covers the emergency open handle 41 is removably locked to the locking plates 61, 61. Therefore, as shown in FIG. 7, when the cover 63 is attached to the emergency door 1, the emergency open handle 41 is covered, and only the tip of the cylinder 7 is exposed from the cylinder exposure hole 67 of the cover 63. . On the other hand, in the event of an emergency such as a fire, by pulling, for example, the lower portion of the cover 63, the locking between the locking plates 61, 61 and the locking claws 65 is released, and the cover 63 is removed, as shown in FIG. As shown
The emergency open handle 41 is exposed.

Next, the operation of the emergency unlocking device 71 configured as described above will be described. FIG. 8 is an operation explanatory view showing the rear view of the emergency unlocking device before the emergency unlocking operation in (a) and the side view in the b direction of (a) in (b). FIG. 9 shows the emergency unlocking state in the emergency unlocking state. The rear view of the locking device is (a), b of (a),
c, d, e direction side view (b), (c), (d),
FIG. 10 is an operation explanatory view shown in (e), and FIG. 10 is a rear view of the emergency unlocking device in a state in which the lock cannot be restored, (a), b of (a),
(b) and (c) of FIG. 11 are explanatory views of the operation in a side view in the c direction, and FIG. 11 is a rear view of the emergency unlocking device in the locked / returned state with the key / thumbnail. It is operation | movement explanatory drawing which represented direction side view to (b), (c).

As shown in FIG. 8, before the emergency unlocking operation,
Although the stopper board 49 is urged by the coil spring 53, it does not project from the rear end of the emergency open handle 41 because the latch arm 51 is caught by the connector direct connection pin 35. Therefore, in this state, the stopper board 49 can pass without engaging with the reverse rotation preventing projection 19.

In this state, when the emergency open handle 41 is rotated in the direction of arrow b in FIG. 9, the connector direct connection pin 35 is pushed by the stopper board 49 mounted on the inner circumference of the emergency open handle 41, and along the guide hole 21. Move and connector 23
Are rotated in the same direction. As a result, the dharma in the lock box 3 is directly unlocked.

As shown in FIG. 10, the emergency open handle 41
Is operated and the emergency unlocking device 71 is unlocked,
When the emergency open handle 41 is rotated in the reverse direction to lock and return, the latch arm 51 of the stopper board 49, which has been hooked on the connector direct connection pin 35, moves in the direction away from the connector direct connection pin 35 and comes off. As a result, the stopper board 49 is unlocked by the connector direct connection pin 35, protrudes from the rear end of the emergency opening handle 41 by the urging force of the coil spring 53, engages with the reverse rotation preventing protrusion 19, and engages with the emergency opening handle 41. Reverse is blocked. In this way, the re-locking operation using the emergency open handle 41 in an emergency is prevented.

Further, when the locking / returning is performed by the key (combined key) or thumb turn, as shown in FIG. 11, the connector direct connection pin 35 is moved while the latch arm 51 of the stopper board 49 is placed. Therefore, the tip of the stopper board 49 does not engage with the reverse rotation preventing projection 19, and the connector direct connection pin 35 moves along the guide hole 21.

As described above, according to the emergency unlocking device 71, the emergency open handle 41 is rotated, and the connector 23 is directly rotated through the connector direct connection pin 35 hooked on the stopper board 49 to lock the lock box 3 When the locking mechanism inside is directly unlocked and the emergency open handle 41 is rotated again to try to lock, the latch arm 51 of the stopper board 49 separates from the connector direct connection pin 35, and the stopper board 49 by the connector direct connection pin 35. Is released. Then, the stopper board 49 is moved in the axial direction by the coil spring 53 and engages with the reverse rotation preventing projection 19 of the cylinder cylinder 5. As a result, it is possible to prevent further rotation of the emergency open handle 41 and prevent re-locking by the emergency open handle 41.

Further, the symmetrical stopper board 49,
By disposing 49, it is possible to prevent re-locking by changing the position of the connector direct connection pin 35 regardless of the rotation direction of the lock operation and unlock operation of the cylinder 7. It is possible to obtain an emergency unlocking device capable of performing the above, that is, it is possible to obtain, as the emergency opening handle 41, a versatile structure with no left-right handedness.

[0031]

As described above, according to the emergency unlocking device of the first aspect of the present invention, the cylinder is supported inside the cylinder barrel, and the rotating piece of the cylinder and the locking mechanism portion are connected. Connect the connector direct connection pin to the connector
A cylindrical emergency open handle is rotatably inserted into the cylinder barrel, and the rotation of the emergency open handle unlocks the direct connector pin to engage the cylinder barrel with a reverse rotation prevention plate. When unlocked using the handle,
When you try to rotate the emergency handle again to lock it,
The reverse rotation preventing plate engages with the cylinder tube, and further rotation of the emergency open handle is prevented, and relocking by the emergency open handle can be prevented. By this, at the time of emergency opening,
It is possible to prevent the emergency unlocking device from being re-locked due to an erroneous operation or the like, and it is possible to keep the opened state and improve the reliability of the emergency unlocking device.

According to the emergency unlocking device of the second aspect, the tips of the latching arms are mutually attached to the inner circumference of the emergency opening handle at respective positions corresponding to the end of rotation in the rotation range of locking and unlocking of the cylinder. Since a pair of reverse rotation prevention plates formed in a symmetrical shape facing each other are arranged, the rotation direction of the rotation operation for locking and unlocking the cylinder is in any case,
It is possible to obtain an emergency unlocking device capable of preventing re-locking by changing the position of the connector direct connection pin, that is, it is possible to obtain a structure without right and left as an emergency open handle. This makes it possible to obtain a general-purpose emergency unlocking device.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an emergency unlocking device according to the present invention.

FIG. 2 is a perspective view showing a top view (a) and a bottom view (b) of a cylinder tube.

FIG. 3 is a rear view (a) and a front view (b) of the connector.
It is a perspective view represented in FIG.

FIG. 4 is a perspective view of the emergency handle shown in a top view (a) and a bottom view (b).

5 is a perspective view of essential parts of the emergency unlocking device shown in FIG. 1. FIG.

6 is a cross-sectional view of a click mechanism provided in the emergency unlocking device of FIG.

FIG. 7 is a front view of the emergency unlocking device shown in FIG. 1 with a cover attached state (a) and a cover detached state (b).

FIG. 8 is an operation explanatory diagram showing the rear view of the emergency unlocking device before the emergency unlocking operation in (a) and the side view in the b direction of (a) in (b).

FIG. 9 is a rear view of the emergency unlocking device in an emergency unlocked state, (a), a side view of the b, c, d, and e directions of (a), (b),
It is operation | movement explanatory drawing represented to (c), (d), (e).

FIG. 10 is a rear view of the emergency unlocking device in a state in which the lock cannot be restored, and a side view of the emergency unlocking device in the b and c directions of FIG.
It is an operation explanatory view shown in (c).

FIG. 11 is an operation explanatory view showing the rear view of the emergency unlocking device in the locked / restored state by the key / thumbnail, and (b) and (c) of (a) and (b) and (c) of the rear view of the emergency unlocking device. is there.

[Explanation of symbols]

5 ... Cylinder cylinder 7 ... Cylinder 17 ... Rotating piece 23 ... Connector 35 ... Pin directly connected to connector 41 ... Emergency handle 49 ... Reverse rotation prevention plate (stopper board) 51 ... Hook arm 53 ... Biasing means (coil spring) 71 ... Emergency unlocking device

Claims (2)

[Claims] 1. A cylinder tube having a cylinder supported therein, a connector for connecting a rotatable turning piece provided in the cylinder and a locking mechanism section, and a tube rotatably inserted into the cylinder tube. -Shaped emergency open handle, a connector direct connecting pin provided on the connector and protruding outward in the radial direction, and a hooking arm that is provided on the inner periphery of the emergency open handle so as to be movable in the axial direction While retaining the non-engaged state with the cylinder by hooking the latch arm, rotation of the emergency open handle releases the latch of the latch arm from the connector direct connection pin, and the biasing means axially moves the latch arm. An emergency unlocking device, comprising: a reverse rotation preventing plate that protrudes to engage with the cylinder cylinder. 2. The emergency unlocking device according to claim 1, wherein the tip of the latch arm is provided on the inner circumference of the emergency open handle at each position corresponding to the end of rotation in the rotation range of locking and unlocking of the cylinder. An emergency unlocking device, characterized in that a pair of reverse rotation prevention plates formed in a symmetrical shape facing each other are arranged.