JP2004099299A - Unlocking device of elevator door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an unlocking device for manually easily unlocking a lock mechanism from the elevator landing hall side while keeping superior design without arranging an unsightly key hole exposed to a surface even in a type of arranging a surface of a door arranged in the elevator landing hall side doorway almost flush with a surface of an upper frame of a jamb. <P>SOLUTION: The surface of the upper frame 2a of the jamb 2 is arranged almost flush with the surface of the door 3a, and an unlocking key 31 is inserted up to the back face side of the door 3a via clearance G between an under surface of the upper frame 2a of the jamb 2 and the key hole 30 oppositely arranged in the door 3a to the clearance G from the elevator landing hall side, and the lock mechanism 9 of the door 3a is unlocked by sliding this unlocking key 31 in the horizontal direction. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an elevator door unlocking device that unlocks a lock mechanism that locks a door provided at an entrance on an elevator landing side by manual operation during maintenance or inspection of an elevator.
[0002]
[Prior art]
An opening / closing door is provided at the entrance of the elevator platform, and when the car arrives on the floor of the entrance / exit, the door is automatically opened based on the landing operation. The door is normally locked in a closed state by a lock mechanism, and when the car has landed, the lock mechanism is unlocked and the door is opened.
[0003]
On the other hand, at the time of maintenance and inspection of an elevator, the lock mechanism is manually unlocked using an unlock key from the elevator landing side, and the door is manually opened to perform maintenance and inspection work.
[0004]
FIG. 12 shows an entrance / exit 1 of an elevator hall. This entrance / exit 1 is constituted by a gate-shaped three-sided frame 2. In this example, the entrance / exit 1 is provided with a pair of doors 3a and 3b. The doors 1 are opened and closed by the doors 3a and 3b moving in opposite directions in conjunction with each other.
[0005]
As shown in FIG. 13, a header case 8 is provided inside the upper frame (curtain plate) 2a of the three-way frame 2, and the header case 8 is provided on the header case 8 via a suspension mechanism (not shown). 3b is suspended so as to be movable left and right.
[0006]
A lock mechanism 9 is provided above one door 3a. As shown in FIG. 14, the lock mechanism 9 has a lock lever 10, and the lock lever 10 rotates around a support shaft 11.
[0007]
The lock lever 10 has an engaging portion 14 and a pushing portion 15, and an engaging claw 16 is formed on the engaging portion 14. An engaging body 18 is provided on the inner surface of the header case 8, and the engaging claw 16 of the lock lever 10 is engaged with the engaging body 18, and the door 3a is locked in a closed state by this engagement. Has been blocked.
[0008]
Since the doors 3a and 3b are configured to move left and right in conjunction with each other, opening and closing the doors 3a and 3b is prevented by locking one of the doors 3a.
[0009]
A keyhole 4 is formed in the upper part of one door 3a, which leads to the landing side of the elevator. When the doors 3a and 3b are manually opened for maintenance or the like, an unlock key 20 is inserted into the keyhole 4 from the elevator landing side as shown in FIG. The unlock key 20 includes a main rod 21 and a movable rod 23 rotatably provided at a distal end of the main rod 21 via a hinge pin 22.
[0010]
At the time of maintenance or the like, the unlock key 20 is inserted into the keyhole 4 with the main rod 21 and the movable rod 23 extending linearly. As shown in FIG. 15, the movable rod 23 of the inserted unlock key 20 rotates downward by its own weight after being inserted, and faces the pushing portion 15 of the lock lever 10 in the lock mechanism 9.
[0011]
When the unlock key 20 is turned in one direction from the elevator landing side in this state, the movable rod 23 hits the pushing portion 15, and the lock lever 10 rotates counterclockwise in FIG. The rotation causes the engaging claw 16 to be disengaged from the engaging body 18 and the locking mechanism 9 to be unlocked. Therefore, in this state, the doors 3a and 3b are manually opened from the elevator landing side and enter the hoistway. Work such as maintenance and inspection can be advanced.
[0012]
[Problems to be solved by the invention]
In such a conventional elevator door unlocking device, the keyhole 4 is exposed on the front surface of the door 3a, as shown in FIG. 12, and the keyhole 4 is conspicuous in appearance, impairs aesthetic appearance, and degrades design. There's a problem.
[0013]
By the way, in the case where the upper frame of the three-way frame is not flush with the surface of the door and the door is displaced to the back side of the three-way frame, no keyhole is provided on the surface of the door, and the door surface is not It is possible to adopt a configuration in which a thin plate is inserted into a gap between the frame and the lock mechanism to manually unlock the lock mechanism.
[0014]
However, as shown in FIG. 13, it is difficult to adopt such a configuration in a door device of a type in which the surface of the door 3a and the surface of the upper frame 2a of the three-sided frame 2 are arranged substantially flush. Therefore, it is inevitable to provide the keyhole 4 with poor design.
[0015]
The present invention has been made in view of such a point, and the purpose thereof is that even if the surface of the door and the surface of the upper frame of the three-sided frame are almost flush, the surface of the It is an object of the present invention to provide an elevator door unlocking device capable of easily and manually unlocking a lock mechanism from an elevator platform side while maintaining a good design without providing an unsightly exposed keyhole.
[0016]
[Means for Solving the Problems]
The invention according to claim 1 is an unlocking device for unlocking a lock mechanism for locking a door provided at an entrance on the elevator platform side constituted by a three-way frame by a manual operation using an unlock key from the elevator platform side. The surface of the upper frame of the three-way frame and the surface of the door are disposed substantially flush with each other, and the unlock key is moved from the elevator landing side through the gap between the lower surface of the upper frame of the three-way frame and the upper surface of the door. The door can be inserted into the back side of the door, and the unlock mechanism can be unlocked by sliding the inserted unlock key in the lateral direction.
[0017]
The invention according to claim 2 is characterized in that the door is provided with a horizontally long slit-shaped keyhole facing the gap, and the unlock key can be inserted into the back side of the door through the keyhole. Features.
[0018]
According to a third aspect of the present invention, the unlock key has an operation portion having a width slightly smaller than a horizontal dimension of the keyhole, and a relief portion having a length larger than a depth dimension of the keyhole is provided on a side edge of the operation portion. A notch is formed, and the unlock key can be slid in the lateral direction based on the escape portion.
[0019]
According to a fourth aspect of the present invention, the unlock key has an operation portion having a predetermined width, and a relief portion having a length larger than a depth dimension of the keyhole is cut out at a side edge of the operation portion, and the keyhole is The unlocking key has a laterally long dimension sufficiently larger than the width of the operating section, and a part of the hole opening is closed with respect to this keyhole so that the substantial lateral dimension of the keyhole is adjusted to the operating section of the unlocking key. It is characterized in that it is possible to attach and detach a backing plate which is specified to be slightly larger than the width.
[0020]
The invention according to claim 5 is characterized in that the lock mechanism is provided with an unlock lever, and a sliding operation of the unlock key is transmitted to the lock mechanism via the unlock lever.
[0021]
The invention according to claim 6 is that, when the unlock lever is normally held in a non-contact state with the lock mechanism by a biasing force of an elastic member, an unlock key is inserted, and the slide lever is slid in the lateral direction, An unlock lever operates against the elastic member and comes into contact with the lock mechanism, and the slide operation of the unlock key is transmitted to the lock mechanism by this contact.
[0022]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described below with reference to FIGS. Parts corresponding to those of the conventional configuration are denoted by the same reference numerals, and detailed description thereof is omitted.
[0023]
1 and 2 show a first embodiment of the present invention. The surfaces of the doors 3a and 3b are flush with the surface of the upper frame 2a of the three-sided frame 2. A step 6 having an upright wall 5 is formed at the rear end of the upper end of each of the doors 3a and 3b. The step 6 is arranged so as to face the opening edge of the three-sided frame 2 at the back side. A gap G is provided between the lower surface of the upper frame 2a of the three-way frame 2 and the upper surfaces of the doors 3a and 3b.
[0024]
On the upright wall 5 of the step portion 6 of one of the doors 3a, a horizontally long slit-like keyhole 30 is formed so as to face the gap G. The keyhole 30 is formed so as to penetrate the upright wall 5 and communicate from the front surface to the rear surface. Then, the pressing portion 15 of the lock lever 10 in the lock mechanism 9 is held so as to be arranged on a side portion on one end side of the keyhole 30.
[0025]
Reference numeral 31 shown in FIG. 5 is a dedicated unlock key used for manually unlocking the lock mechanism 9. The unlock key 31 is formed by bending a thin plate material such as a metal at a substantially right angle to operate the grip portion 32. It is formed in an L shape having a portion 33. A U-shaped escape portion 33a is cut out at one side edge of the operation portion 33.
[0026]
The width H of the operation portion 33 of the unlock key 31 is slightly smaller than the laterally long dimension of the keyhole 30, the length L of the operation portion 33 is larger than the width of the thickness of the door 3a, and the length L1 of the escape portion 33a is 30 is slightly larger than the depth dimension.
[0027]
When unlocking the lock mechanism 9 manually, the grip portion 32 of the unlock key 31 is grasped by hand, and the operation portion 33 is inserted into the keyhole 30 from the elevator landing side through the gap G as shown in FIG. Then, the front end side is projected to the rear side of the door 3a.
[0028]
Then, the unlock key 31 is horizontally slid horizontally to the right in FIG. 3 by aligning the escape portion 33 a on the side edge of the operation portion 33 of the unlock key 31 with the side wall of the keyhole 30. Due to this sliding operation, one side edge of the operation section 33 moves further outward from one end of the keyhole 30 and comes into contact with the pushing section 15 of the lock lever 10 in the lock mechanism 9.
[0029]
The contact causes the lock lever 10 to rotate in the counterclockwise direction in FIG. 3, whereby the engagement claw 16 is disengaged from the engagement body 18 and the lock mechanism 9 is unlocked. Therefore, in this state, the doors 3a and 3b can be manually opened from the landing side of the elevator, and can enter the hoistway to proceed with work such as maintenance and inspection.
[0030]
In such a configuration, the unsightly keyhole 30 is not exposed on the surface of the door 3a, so that the surface of the door 3a facing the landing side of the elevator is cleaner in appearance, and the design is improved.
[0031]
To unlock the lock mechanism 9, the operation part 33 of the unlock key 31 is inserted into the keyhole 30, and the escape part 33 a on the side edge of the operation part 33 is aligned with the length section of the keyhole 30 in the depth direction. This can be achieved only when the operation unit 33 is slid in the lateral direction, so that even if a thin plate material such as a ruler is inserted into the keyhole 30 by mischief, the sliding in the lateral direction becomes impossible. Therefore, the unlocking operation of the lock mechanism 9 due to mischief can be prevented.
[0032]
FIG. 6 shows a second embodiment. In this embodiment, the width of the keyhole 30 is longer than that of the first embodiment. That is, the width of the keyhole 30 is sufficiently longer than the width H of the operation portion 33 of the unlock key 31 shown in FIG. Then, as shown in FIG. 6A, the push portion 15 of the lock lever 10 in the lock mechanism 9 is disposed so as to face the one end of the keyhole 30.
[0033]
As shown in FIG. 6B, a backing plate 35 for closing a part of the opening of the keyhole 30 can be detachably attached to the rear surface of the door 3a via a screw 36.
[0034]
By attaching the backing plate 35, a part of the opening of the keyhole 30 is closed, and the laterally long dimension of the substantial opening of the keyhole 30 is slightly larger than the width H of the operation portion 33 of the unlock key 31. It can be specified.
[0035]
By the way, it is important for the lock mechanism 9 to normally prevent the unlocking operation by tampering using a thin plate material such as a ruler, but it is necessary to frequently repeat the unlocking operation during an elevator installation work period or the like. Therefore, it is required that the operation is easy to some extent.
[0036]
Therefore, during the period of the elevator installation work or the like, as shown in FIG. 6A, the work or the like is performed with the backing plate 35 removed. In this case, since the width of the keyhole 30 is longer than the width of the operation part 33 of the unlock key 31, when unlocking the lock mechanism 9, the operation part 33 of the unlock key 31 is inserted into the keyhole 30. In this state, only the operating portion 33 is slid in the lateral direction, and the escape portion 33a on the side edge of the operating portion 33 is particularly moved in the depth direction of the keyhole 30. The lock mechanism 9 can be easily and efficiently unlocked by pressing the pressing portion 15 of the lock lever 10 in the lock mechanism 9 without requiring a troublesome and troublesome operation for fitting to the length section.
[0037]
Further, instead of using the unlock key 31, a thin plate material such as another ruler can be inserted into the keyhole 30 and the locking mechanism 9 can be unlocked by sliding it horizontally.
[0038]
Then, when the installation work of the elevator is completed and the elevator is used in a normal state, as shown in FIG. 6B, the backing plate 35 is attached to the back surface of the door 3a with screws 36. In this state, the lateral dimension of the keyhole 30 is substantially shortened. Therefore, in this state, the operating portion 33 of the unlock key 31 is inserted into the keyhole 30 and the side edge of the operating portion 33 is relieved. The operation portion 33 is slid in the horizontal direction with the portion 33a aligned with the side edge of the backing plate 35, and the lock mechanism 9 is unlocked. In this case, even if a thin plate material such as a ruler is inserted into the keyhole 30 by mischief, the slide in the lateral direction is restricted by the backing plate 35 and becomes impossible, so that the unlocking operation of the lock mechanism 9 due to the mischief can be performed. Can be prevented.
[0039]
That is, according to the second embodiment, the unlocking operation of the lock mechanism 9 can be easily and efficiently performed during the installation work of the elevator or the like, and the unlocking of the lock mechanism 9 by mischief is performed during normal use of the elevator. Operation can be prevented.
[0040]
FIGS. 7 to 10 show a third embodiment. In this embodiment, the doors 3a and 3b are provided with a hanger plate 39 on the upper rear surface. A lock lever 40 is attached, and an engagement body 41 that can be engaged with and disengaged from the lock lever 40 is attached to the back surface of the header case 8.
[0041]
The lock lever 40 has an intermediate portion rotatably supported via a support shaft 42, a hook-shaped engaging portion 43 at one end, and a pushing portion 44 at the other end. The engaging member 41 is engaged with the engaging claw 45 so as to be disengageable.
[0042]
An unlock lever 48 is rotatably mounted on a back surface of the hanger plate 39 via a support shaft 49. The unlock lever 48 has an L shape, and the support shaft 49 is provided at a bent portion thereof. One end of the unlock lever 48 bordering the support shaft 49 is an operation unit 50, and the other end is a receiving unit 51. Then, the operating portion 50 comes into contact with the pushing portion 44 of the lock lever 40, the receiving portion 51 extends below the hanger plate 39, and the side edge of the extending end is rotated by the own weight of the unlock lever 48. And is in contact with the stopper 52.
[0043]
The hanger plate 39 is formed with a keyhole 53 having a horizontally long slit shape facing the gap G between the lower surface of the upper frame 2a of the three-way frame 2 and the upper surface of the door 3a. The receiving portion 51 of the unlock lever 48 is disposed at one side.
[0044]
FIG. 10 shows an unlock key 31 used in this embodiment. In this unlock key 31, the length of the U-shaped escape portion 33a formed on one side edge of the operation portion 33 is set. The dimension L2 is smaller than that of the unlock key 31 shown in FIG.
[0045]
When unlocking the lock mechanism 9, the grip portion 32 of the unlock key 31 shown in FIG. 10 is grasped by hand, and the operation portion 33 is passed through the gap G from the landing side of the elevator hall as shown by a chain line in FIG. It is inserted into the keyhole 53, and its tip side is made to protrude to the back side of the hanger plate 39, and the escape portion 33 a faces the side edge of the keyhole 53.
[0046]
Then, the unlock key 31 is slid horizontally to the right in FIG. At this time, since the escape portion 33 a of the operation portion 33 enters the side edge of the keyhole 53, one side edge of the operation portion 33 moves further outward than one end of the keyhole 53 and the receiving portion of the unlock lever 48. Abuts 51.
[0047]
By this contact, the unlocking lever 48 rotates counterclockwise in FIG. 9 about the support shaft 49, and this rotation causes the pushing portion 44 of the lock lever 40 to move downward with the operating portion 50 of the unlocking lever 48. This causes the lock lever 40 to rotate clockwise about the support shaft 42, the engaging portion 43 is disengaged from the engaging claw 45 of the engaging body 41, and the lock mechanism 9 is unlocked. Therefore, in this state, the doors 3a and 3b can be manually opened from the landing side of the elevator, and can enter the hoistway to proceed with work such as maintenance and inspection.
[0048]
Even in such a configuration, the ugly keyhole 53 is not exposed on the surface of the door 3a, so that the surface of the door 3a facing the elevator landing side is cleaner in appearance, and the design is improved.
[0049]
In the third embodiment, by using the unlock lever 48, unlike the case of the first embodiment, the lock mechanism 9 has an unlock key even if the pressing portion 44 has a structure extending in the horizontal direction. The lock mechanism 9 can be unlocked by the operation of sliding the lock 31 horizontally in the horizontal direction. Further, in the third embodiment, the turning operation force of the lock lever 40 can be adjusted by changing the length L of the operation portion 50 of the unlock lever 48.
[0050]
FIG. 11 shows a fourth embodiment. In this embodiment, the unlock lever 48 in the third embodiment is elastically urged clockwise by a spring 55.
[0051]
Then, under the locked state of the lock mechanism 9, as shown in FIG. 11A, the receiving portion 51 of the unlock lever 48 elastically abuts the stopper 52 by the urging force of the spring 55, and the operating portion 50 Are kept in a non-contact state in which they are separated from and not in contact with the pressing portion 44 of the lock lever 40.
[0052]
When unlocking the lock mechanism 9, as shown in FIG. 11B, the operation unit 33 of the unlock key 31 is inserted into the keyhole 53 from the landing side of the elevator, and is slid rightward to unlock. The lever 48 rotates counterclockwise in the figure around the support shaft 49 against the spring 55.
[0053]
Due to this rotation, the push portion 44 of the lock lever 40 is pressed downward by the operation portion 50 of the unlock lever 48, and the lock lever 40 rotates clockwise about the support shaft 42 by this pressing, and the engagement portion 43 is disengaged from the engagement claw 45 of the engagement body 41, and the lock mechanism 9 is unlocked. Therefore, in this state, the doors 3a and 3b are manually opened from the landing side of the elevator to enter the hoistway for maintenance. Work such as inspection can be advanced.
[0054]
By the way, the lock mechanism 9 is provided with a switch mechanism S for electrically detecting the presence or absence of the lock during normal operation of the elevator, but the unlock lever 48 comes into contact with the lock lever 40 of the lock mechanism 9. In such a case, vibrations of the unlock lever 48 during normal operation of the elevator may be transmitted to the switch mechanism S to cause a malfunction.
[0055]
However, in the fourth embodiment, the unlock lever 48 is elastically biased by the spring 55, and the unlock lever 48 and the lock lever 40 of the lock mechanism 9 are kept in a non-contact state during normal operation of the elevator. As a result, vibration of the unlock lever 48 and the like are not transmitted to the lock mechanism 9, and therefore, a risk of malfunction of the switch mechanism S provided in the lock mechanism 9 can be prevented.
[0056]
In each of the above embodiments, a pair of doors are moved in opposite directions to open and close the doorway, and the double door system is used, but a plurality of doors are overlapped on each other at different speeds in the same direction. The present invention can be applied to a door device that moves to open and close an entrance or a single-door type door device in which a single door moves left and right to open and close an entrance.
[0057]
【The invention's effect】
As described above, according to the present invention, even if the surface of the door provided at the doorway on the elevator landing side and the surface of the upper frame of the three-way frame are almost flush, it is not possible to expose the surface of the door. The lock mechanism can be easily unlocked manually from the elevator landing side while maintaining good design without providing a styled keyhole.
[Brief description of the drawings]
FIG. 1 is a front view showing an elevator door unlocking device according to a first embodiment of the present invention.
FIG. 2 is a side view of the unlocking device.
FIG. 3 is a front view showing a state when the unlock device is operated.
FIG. 4 is a front view showing a state when the unlock device is operated.
FIG. 5 is a perspective view showing an unlock key used in the unlock device.
FIG. 6 is a front view showing an elevator door unlocking device according to a second embodiment of the present invention.
FIG. 7 is a front view showing an elevator door unlocking device according to a third embodiment of the present invention.
FIG. 8 is a side view of the unlocking device.
FIG. 9 is a front view showing a state when the unlocking device is operated.
FIG. 10 is a perspective view showing an unlock key used for the unlock device.
FIG. 11 is a front view showing an elevator door unlocking device according to a fourth embodiment of the present invention.
FIG. 12 is a front view showing an entrance of an elevator platform.
FIG. 13 is a side view showing a conventional elevator door unlocking device.
FIG. 14 is a front view of the unlocking device.
FIG. 15 is a side view showing a state when the unlock device is operated.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Doorway 2 ... Three-sided frame 3a, 3b ... Door 9 ... Lock mechanism 10 ... Lock lever 14 ... Engaging part 15 ... Pushing part 18 ... Engaging body 30 ... Keyhole 31 ... Unlock key 35 ... Backing plate 39 ... Hanger plate 40 ... lock lever 41 ... engagement body 48 ... unlock lever 52 ... stopper 53 ... key hole 55 ... spring

Claims (6)

In an unlocking device that unlocks a lock mechanism that locks a door provided at an entrance on the elevator platform side configured by a three-way frame by a manual operation using an unlock key from the elevator platform side,
In the unlocking device, the surface of the upper frame of the three-way frame and the surface of the door are substantially flush with each other, and the unlock key is provided in a gap between the lower surface of the upper frame of the three-way frame and the upper surface of the door. The door can be inserted from the elevator landing side to the rear side of the door through the door, and the lock mechanism can be unlocked by sliding the inserted unlock key in the lateral direction. apparatus. 2. The door according to claim 1, wherein the door is provided with a horizontally long slit-shaped keyhole facing the gap, and the unlock key can be inserted into the back side of the door through the keyhole. 3. An unlocking device for an elevator door as described in the above. The unlock key has an operation portion having a width slightly smaller than the horizontal dimension of the keyhole, and a relief portion having a length larger than the depth dimension of the keyhole is cut out at a side edge of the operation portion, and the escape portion is formed. The unlocking device for an elevator according to claim 2, wherein the unlocking key can be slid in the horizontal direction based on the following. The unlock key has an operating portion having a predetermined width, and a relief portion having a length larger than the depth dimension of the keyhole is cut out at a side edge of the operating portion, and the operating portion of the unlock key is formed by notching. The keyhole has a laterally long dimension that is sufficiently larger than the width of the keyhole, and a part of the hole opening is closed with respect to this keyhole so that the substantial lateral dimension of the keyhole is slightly larger than the width of the operating portion of the unlock key. 3. The elevator unlocking device according to claim 2, wherein the prescribed contact plate can be attached and detached. 5. The lock mechanism according to claim 1, wherein the lock mechanism includes an unlock lever, and a sliding operation of the unlock key is transmitted to the lock mechanism via the unlock lever. 6. Elevator unlocking device. The unlock lever is normally held in a non-contact state with the lock mechanism by an urging force of an elastic member, and when an unlock key is inserted and slid in a lateral direction, the unlock lever is moved to the elastic member. The elevator unlocking device according to claim 5, wherein the unlocking device contacts the lock mechanism by operating against the lock mechanism, and the slide operation of the unlock key is transmitted to the lock mechanism by the contact.

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