JP2022157382A - Automatic door device, guard screen locking/unlocking device, and unlocking method for guard screen locking/unlocking device - Google Patents

Abstract

To provide a device provided with an openable/closable guard screen, which is effective for preventing a passer-by from accessing a lock.SOLUTION: An automatic door device comprises: a sliding door; a guard screen provided to face a fixed part provided on the door tail side of the sliding door and to be openable/closable with the sliding door between the guard screen and the fixed part; and a lock 34 provided in at least one of a doorframe 20A of the sliding door or a transom of the automatic door device. Thus, access to the lock 34 can be limited.SELECTED DRAWING: Figure 4

Description

The present invention relates to an automatic door device, a guard screen locking/unlocking device, and an unlocking method for the guard screen locking/unlocking device.

Conventionally, there is known a guard screen that prevents a passerby from contacting an open door when opening a sliding door type automatic door. A guard screen is placed between the path of movement of the opening door and the path of the passerby to isolate both paths.

Guard screens are usually formed so that they can be opened and closed for cleaning and maintenance of the rear side of the guard screen. For example, Patent Literature 1 describes a structure in which a guard screen that can be opened and closed is provided with a French drop lock so that the guard screen cannot be opened unless the lock is unlocked.

JP 2011-157741 A

In the structure of Patent Document 1, if a passerby accesses the lock, the guard screen can be easily unlocked.

SUMMARY OF THE INVENTION An object of the present invention is to provide a device having a guard screen that can be opened and closed, which is effective in preventing passers-by from accessing the lock.

In order to solve the above problems, an aspect of the present invention is a sliding door, a guard screen provided facing a fixed portion provided on the door bottom side of the sliding door and capable of being opened and closed with the sliding door interposed therebetween, and a frame or automatic and a lock portion provided inside at least one of the openings of the door device for restricting the opening operation of the guard screen.

This arrangement prevents passers-by from accessing the lock.

1 is a perspective view of an automatic door system to which a guard screen locking/unlocking device according to this embodiment is applied; FIG. 1 is a perspective view of an automatic door system to which a guard screen locking/unlocking device according to this embodiment is applied; FIG. It is sectional drawing in the XZ plane of the same guard screen. It is sectional drawing in YZ plane of the same guard screen. It is sectional drawing in YZ plane of the same guard screen. It is a sectional view in the YZ plane of the guard screen locking/unlocking device according to the second embodiment. It is the schematic of the guard screen locking/unlocking apparatus by the modification of 2nd Embodiment.

Embodiments of the present invention will be described below. 1 and 2 are perspective views of an automatic door system to which a guard screen locking/unlocking device according to this embodiment is applied. In the following embodiments, for convenience of explanation, detailed explanation may be given using three-dimensional orthogonal coordinates shown in each figure. The X-axis extends along the direction in which a person passes through the automatic door system. The Y-axis is perpendicular to the X-axis on the horizontal plane and extends along the direction in which the sliding door of the automatic door system opens and closes. The Z-axis is along the vertical direction.

First, the basic structures of the guard screen and the automatic door system will be described with reference to FIGS. 1 and 2. FIG. As shown in FIG. 1 , the automatic door device 10 has two sliding doors 12 . The sliding door 12 opens and closes by sliding along the Y-axis, for example, according to a person's motion. When the sliding doors 12 are closed, the side surfaces of the two sliding doors 12 on the door tip side contact each other, blocking the passage of people and the flow of wind. When the sliding doors 12 are open, each of the two sliding doors 12 is accommodated in the door accommodating portion 14 in the +Y direction or the -Y direction, and a predetermined opening is formed between the side surfaces of the sliding doors 12 on the door tip side. .

The automatic door device 10 has a guard screen 16 and a fixing portion 17 . A door accommodating portion 14 is provided between the guard screen 16 and the fixed portion 17 . The door accommodating portion 14 is arranged between the guard screen 16 and the fixing portion 17 which are arranged apart in the X-axis direction. More specifically, the guard screen 16 and the fixing portion 17 are arranged apart by a distance slightly longer than the thickness of the sliding door 12 in the X-axis direction. When the sliding door 12 is open, the sliding door 12 is housed between the guard screen 16 and the fixing portion 17 . By housing the sliding door 12 between the guard screen 16 and the fixing part 17, it is possible to prevent a person from coming into contact with the sliding door 12 that shifts from the closed state to the open state.

The guard screen 16 includes a guard screen body 18 made of, for example, transparent or translucent glass, and metal frames 20 surrounding the guard screen body 18 on all sides. The frame 20 consists of horizontal frames 20A and 20B extending horizontally above and below the guard screen body 18 (+Z side and -Z side), respectively, and horizontal frames 20A and 20B extending vertically on the left and right sides (+Y side and -Y side) of the guard screen body 18, respectively. Extending vertical frames 20C and 20D are provided. The guard screen body 18 has two main surfaces 22 facing opposite sides (+X direction and -X direction), two side end surfaces 24A and 24B facing +Y direction and -Y direction, respectively, an upper surface 26 and a lower surface 28. and has a plate shape. One side end face 24A of the guard screen body 18 is located at a position overlapping the rotation axis Z1 when the guard screen 16 is opened and closed. The other side end face 24B of the guard screen body 18 is located at the farthest position from the rotation axis Z1 in the XY plane, and defines the side of the opening when the sliding door 12 is opened. The guard screen body 18 is formed integrally with the stile 20 .

At the +Z direction end of the sliding door 12, a mesh 30 extending between the rotation axis Z1 of the guard screen 16 on the -Y side and the rotation axis Z1 of the guard screen 16 on the +Y side is formed. The mesh 30 has a hollow structure, and a motor and a motor control unit (not shown) that serve as a power source for opening and closing the sliding door 12 are arranged therein. A sensor 32 for detecting a person is provided on the ±X side surface of the blind 30 .

The fixed part 17 is formed by reinforcing the periphery of a transparent or translucent rectangular sheet glass with a frame, for example, similarly to the guard screen 16 . The fixed part 17 is fixed to the shims 30 . The fixing portion 17 is provided on the trailing edge side of the sliding door 12 when the door ends of the sliding doors 12 are in contact with each other (hereinafter referred to as the fully closed state of the sliding door 12). That is, when the sliding door 12 is in the fully closed state, a wall is formed by the fixing portion 17 and the sliding door 12, and a person or an object cannot pass through the automatic door device 10.例文帳に追加Further, when the sliding door 12 is arranged in the door housing portion 14 and is in a state of facing the guard screen 16 (hereinafter referred to as the fully open state of the sliding door 12), the sliding door 12 is sandwiched between the guard screen 16 and the fixing portion 17. .

As shown in FIG. 2, the guard screen 16 that constitutes the accommodation section can be opened and closed around the rotation axis Z1. By making the guard screen 16 openable and closable, it becomes easier to perform maintenance work and cleaning work inside the door housing portion 14 . The work of opening and closing the guard screen 16 is performed by the administrator of the automatic door device 10, not by ordinary passers-by. Therefore, it is necessary to prevent the guard screen 16 from being opened against the administrator's intention when maintenance or the like is not performed. The locking/unlocking device L that regulates the opening and closing of the guard screen 16 will be described below.

3 is a cross-sectional view of the guard screen on the XZ plane, and FIG. 4 is a cross-sectional view of the guard screen on the YZ plane. 3 and 4 both show a state in which the guard screen 16 is closed. As shown in FIGS. 3 and 4, the locking/unlocking device L for the guard screen 16 includes a lock portion 34 that prevents the guard screen 16 from opening in the locked state.

The lock portion 34 restricts the guard screen 16 from opening in the locked state, and allows the guard screen 16 to open in the unlocked state. The lock portion 34 is formed near the other side end surface 24B of the guard screen 16, that is, near the end on the +Z side at a position away from the rotation axis Z1 along the Y axis. The position where the locking portion 34 is provided is not limited to this position. The lock portion 34 may be provided, for example, at a position near the automatic door apparatus 10 or its peripheral structure, or may be provided near one side end face 24A of the guard screen 16 or near the end on the -Z side.

The lock portion 34 includes a lock mechanism 36 that engages with the guard screen 16 in the locked state and restricts the opening operation of the guard screen 16 so that the guard screen 16 cannot rotate about the Z1 axis. A locking mechanism 36 is disposed within the shim 30 . The lock mechanism 36 includes a deadbolt 40 that engages with a lock recessed portion 38 formed on the upper surface of the horizontal frame 20A of the guard screen 16 and is movable along the Z-axis, and a bolt holding portion that temporarily holds the deadbolt 40. and a catch 42 as As an example of the lock mechanism 36, a so-called one-touch open latch can be used. The deadbolt 40 is positioned in the -Z direction in the locked state, protrudes from the inside of the mesh 30 and engages with the lock recess 38 . This restricts the guard screen 16 from rotating around the Z1 axis. In the unlocked state, the deadbolt 40 is positioned in the +Z direction, held by the catch 42 and disengaged from the lock recess 38 . When a force in the +Z direction is applied to the deadbolt 40 while the catch 42 holds the deadbolt 40, the catch 42 releases the deadbolt 40 and the deadbolt 40 shifts to a locked state. When the deadbolt 40 is pushed in the +Z direction while the deadbolt 40 is in the locked state, the deadbolt 40 is lifted and held by the catch 42 . As a result, the deadbolt 40 shifts to the unlocked state.

The lock portion 34 further includes a link 44 as a release mechanism for releasing the restriction of the opening operation of the guard screen 16 by the lock portion 34 . The link 44 is rotatable about the X1 axis extending along the X axis and is arranged within the lateral frame 20A of the guard screen 16. As shown in FIG. Link 44 converts the direction of force applied by a tool, which will be described later, and applies the converted force to deadbolt 40 . The X1 axis is positioned at a corner near the +Z side end of the other side end surface 24B of the vertical frame 20C. The link 44 includes a first arm 44A extending from the X1 axis along the Y axis and a second arm 44B extending in the -Z direction. The lock recess 38 has a substantially L-shape in the YZ plane and accommodates the link 44 therein. In a free state where no external force is applied to the link 44, the first arm 44A is parallel to the Y-axis and the second arm 44B is parallel to the Z-axis.

The locking mechanism 36 is located within the mesh 30 and the link 44 is located within the stile 20 as described above. Therefore, the locking part 34 is partially built in at least one of the mesh 30 and the frame 20 . That the lock part 34 is partially built into at least one means that the inside of at least one of the blind 30 and the frame 20 is so arranged that the lock part 34 is not or hardly visible from the outside when the guard screen 16 is locked. It means that it is placed in At this time, even if the guard screen 16 is not locked and the lock part can be seen from the outside with the guard screen 16 open, the lock part 34 is considered to be at least partially built-in.

In the illustrated example, the locking mechanism 36 is built in the blind 30 , but the locking mechanism 36 may be arranged in the frame 20 of the guard screen 16 . In this case, the guard screen 16 is locked by engaging the dead bolt 40 of the lock mechanism 36 with a recess or the like provided on the side of the blind 30 .

In this embodiment, the blind 30 of the automatic door device 10 and the frame 20 of the guard screen 16 constitute the cover, but the cover is not necessarily limited to this. The cover may be provided separately from the mesh 30 and the frame 20 as long as it can cover the lock portion 34 in the locked state.

A hole 50 into which an unlocking tool 48 for releasing the locked state of the lock portion 34 can be inserted is formed in the vertical frame 20C. In this embodiment, the hole 50 is provided near the +Z side end of the other side end surface 24B of the vertical frame 20C. By forming the hole 50 in the side end surface 24B of the vertical frame 20C, the hole 50 is made difficult to be visually recognized by passers-by, and deterioration of the design of the guard screen 16 can be prevented. The hole 50 penetrates the vertical frame 20C from the side end surface 24B to the lock recess 38 along the Y-axis. Holes 50 have, for example, rectangular, square or circular cross-sections. In the illustrated example, the holes 50 extend linearly parallel to the Y-axis, but they may be inclined with respect to the X-axis, Y-axis, or Z-axis. The opening size, length, and shape in the XZ cross section of the hole 50 are such that a finger cannot pass through. The size and shape that the fingers cannot pass through are determined according to JISB9707 or ISO13857. As an example, hole 50 is a hole with a diameter of 12 mm and a length of 50 mm. This prevents passers-by from inserting their fingers into the holes 50 .

To access the locking portion 34 through the hole 50 of the stile 20, a tool 48 (see FIG. 5) having a shape smaller than the opening dimension of the hole 50 and longer than the length of the hole 50 is used. A tool 48 is used to exert a force on the second arm 44B of the link 44 through the hole 50. As shown in FIG. As the tool 48, any rod-shaped member having a length that can be inserted into the hole 50 and that has a length that can cross the vertical frame 20C along the Y-axis and contact the link 44 can be used. may be As the tool 48, a tool having such an elongated rod-shaped member may be prepared, or familiar items such as a mechanical pencil and a ballpoint pen may be used.

The operation of the automatic door system 10 will be described below with reference to FIGS. 4 and 5. FIG. FIG. 5 is a cross-sectional view of the guard screen in the YZ plane. 4 shows the guard screen in the locked state, while FIG. 5 shows the guard screen in the unlocked state. As described above, in the locked state of FIG. 4, the first arm 44A of the link 44 extends along the Y axis and the second arm 44B extends along the Z axis. The −Z side end of the deadbolt 40 is in contact with the upper surface of the first arm 44A. As shown in FIG. 5, when the tool 48 is passed through the hole 50 and the tip of the tool 48 pushes the second arm 44B, the link 44 rotates about the axis X1. As a result, the first arm 44A pushes up the deadbolt 40 in the +Z direction. When the deadbolt 40 is pushed up by the first arm 44</b>A, the deadbolt 40 is pushed out of the lock recess 38 and held by the catch 42 . This disengages the deadbolt 40 from the guard screen 16 and allows the guard screen 16 to rotate about the axis Z1. As a result, the door accommodating portion 14 is opened, and maintenance, cleaning, and the like can be performed.

When locking the guard screen 16, the guard screen 16 is rotated so that the guard screen 16 is parallel to the Y-axis. A tool 48 is then inserted into the hole 50 to push the second arm 44B of the link 44. As shown in FIG. As a result, the link 44 rotates around the axis X1 and the first arm 44A pushes the bottom surface of the deadbolt 40. As shown in FIG. This causes catch 42 to release deadbolt 40 . When deadbolt 40 is released, deadbolt 40 enters lock recess 38 and guard screen 16 is locked.

Considering the structure of the automatic door apparatus 10, especially when the lock portion 34 is provided on the other side end surface 24B of the vertical frame 20C, the deadbolt 40 is provided in the grommet 30 of the automatic door apparatus 10 and extends along the Z axis. should be placed as follows. When force is applied in the Z-axis direction to the deadbolt 40 extending along the Z-axis, it is necessary to form a hole extending parallel to the Z-axis. As a space where a hole extending in the Z-axis direction can be formed in the guard screen 16, there is a step surface facing the -Z direction between the horizontal frame 20A and the guard screen body 18. FIG. It is possible to move the dead bolt 40 even if a hole is formed in the step surface. However, by extending the hole along the Y-axis and using the link 44 to change the direction in which the force acts, for example, the operator does not need to work while facing upward, thereby improving workability.

As described above, by arranging the locking portion 34 inside the stile 20 and the mesh 30 and making the locking portion 34 operable only through the hole 50, the guard screen 16 can be opened only when the special tool 48 is used. can be unlocked. This prevents a person who does not have the tool 48 from accessing the lock of the guard screen 16 and unlocking it. This can prevent, for example, a person who does not have the tool 48 from opening the guard screen 16 .

Further, when the lock is released using the tool 48, the lock can be released only by applying force to the link with the tool 48. - 特許庁Therefore, the unlocking work is very simple. Thus, it is possible to prevent a person who does not have the tool 48 from opening the guard screen 16 while maintaining workability.

Next, a second embodiment will be described. FIG. 6 is a cross-sectional view along the YZ plane of the guard screen according to the second embodiment.

As shown in FIG. 6, the guard screen 52 has an electric lock 54 as a locking portion. The electric lock 54 is preferably powered by a power supply for driving the automatic door system 10 . The electric lock 54 is arranged in the blind 30 of the automatic door apparatus 10 and driven by a switch 56 . Also in this case, the electric lock 54 is arranged at a position that cannot be visually recognized from the outside. The switch 56 may communicate with the electric lock by a wireless method such as a remote controller, or may be provided in a control room or the like where passers-by cannot enter and communicate with the electric lock by a wired method. The electric lock 54 includes a deadbolt 58 movable along the Z-axis and a bolt driver 60 that drives the deadbolt 58 . By supplying electric power to the bolt drive unit 60 from the drive unit M of the automatic door device 10, the wiring at the time of construction can be simplified. The deadbolt 58 locks the guard screen 52 by engaging with a locking recess 62 provided on the upper surface of the horizontal frame 20A. When the deadbolt 58 is moved in the +Z direction by the bolt drive unit 60, the deadbolt 58 is disengaged from the locking recess 62 and is retracted into the mesh 30 from the engagement state with the guard screen 52 and is held in the mesh 30. be done. As a result, the engagement between the deadbolt 58 and the guard screen 16 is released and the guard screen 52 is brought into the unlocked state.

By using such an electric lock 54 and providing a switch 56 for unlocking the electric lock 54 at a position away from the lock portion and inaccessible by the passerby, the passerby unlocks the guard screen 52. can prevent

FIG. 7 is a schematic diagram of a guard screen locking/unlocking device according to a modification of the second embodiment. As shown in FIG. 7 , the guard screen locking/unlocking device includes a controller 64 that controls the electric lock 54 . A controller 64 controls power supply to the electric lock 54 . The deadbolt 58 of the electric lock 54 is retained within the lock recess 62 while power is supplied from the controller 64 to the electric lock 54 . When power supply from the controller 64 to the electric lock 54 is stopped, the deadbolt 58 is retracted from the lock recess 62 . Power supply from the controller 64 to the electric lock 54 is interlocked with turning on or off the power of the automatic door apparatus 10 . Specifically, while the automatic door apparatus 10 is powered on, power is supplied from the controller 64 to the electric lock 54 so that the electric lock 54 can be driven, and the deadbolt 58 is engaged with the lock recess 62 . On the other hand, only when the power of the automatic door apparatus 10 is turned off, the power supply from the controller 64 to the electric lock 54 is stopped, and the deadbolt 58 is retracted from the lock recess 62 .

By linking the electric lock 54 and the power source of the automatic door device 10 in this way and providing the power switch of the automatic door device 10 at a position away from the lock portion and inaccessible to passers-by, the guard screen can be opened by passers-by. can be prevented from unlocking the Also, with such a configuration, the electric lock 54 can be unlocked only when the power of the automatic door apparatus 10 is turned off. Therefore, malfunction of the electric lock 54 can be prevented.

The following aspects can be derived by generalizing the above-described embodiment and its modifications.

[Aspect 1]
automatic door sliding door,
a guard screen that faces a fixed portion provided on the trailing edge side of the sliding door and is provided so as to be openable and closable across the sliding door;
an automatic door apparatus comprising: a lock section provided inside at least one of the frame of the guard screen and the opening of the automatic door apparatus, and restricting the opening operation of the guard screen.

According to this configuration, access to the lock section can be restricted.

[Aspect 2]
The automatic door apparatus according to aspect 1, wherein the guard screen is formed with a hole into which a tool for releasing the restriction of the opening operation of the guard screen by the lock portion is inserted.

This arrangement allows access to the lock only by those with tools.

[Aspect 3]
The automatic door apparatus according to aspect 1, wherein the lock portion is an electric lock including a bolt that engages the guard screen in a locked state, and a drive portion that retracts the bolt from the engagement state with the guard screen. .

According to this configuration, the locking portion can be electrically controlled. As a result, for example, the locking unit can be operated remotely.

[Aspect 4]
The automatic door apparatus according to aspect 3, wherein the electric lock is driven using electric power of the automatic door apparatus.

According to this configuration, there is no need to separately provide a power source for the electric lock.

[Aspect 5]
The automatic door apparatus according to aspect 4, wherein the electric lock becomes drivable when the automatic door apparatus is powered off.

According to this configuration, malfunction of the electric lock can be prevented.

10 automatic door device, 16, 52 guard screen, 18 guard screen body, 20 frame, 24 side end surface, 30 mesh, 34 lock part, 36 lock mechanism, 38, 62 lock concave part, 40, 58 dead bolt, 42 catch, 44 link, 50 hole, 54 electric lock, 60 bolt drive

Claims (11)

automatic door sliding door,
a guard screen that faces a fixed portion provided on the trailing edge side of the sliding door and is provided so as to be openable and closable across the sliding door;
an automatic door apparatus comprising: a lock section provided inside at least one of the frame of the guard screen and the opening of the automatic door apparatus, and restricting the opening operation of the guard screen. 2. The automatic door apparatus according to claim 1, wherein said guard screen is formed with a hole into which a tool for releasing the restriction of the opening operation of said guard screen by said locking portion is inserted. 2. The automatic door according to claim 1, wherein the lock portion is an electric lock including a bolt that engages the guard screen in a locked state, and a driving portion that retracts the bolt from the engagement state with the guard screen. Device. 4. The automatic door apparatus according to claim 3, wherein said electric lock is driven using electric power of said automatic door apparatus. 5. The automatic door apparatus according to claim 4, wherein said electric lock becomes drivable when said automatic door apparatus is powered off. A guard screen facing a fixed portion provided on the door bottom side of a sliding door of an automatic door and capable of being opened and closed with the sliding door interposed therebetween;
A guard screen locking/unlocking device, comprising: a lock section provided inside at least one of the frame of the guard screen and the opening of the automatic door device, and restricting the opening operation of the guard screen. 7. The guard screen locking/unlocking device according to claim 6, wherein said guard screen is formed with a hole into which a tool for releasing the restriction of the opening operation of said guard screen by said locking portion is inserted. The guard screen locking/unlocking device according to claim 7, wherein the holes are formed in the vertical stile of the guard screen. The lock portion includes a lock mechanism that engages with the guard screen;
The guard screen locking/unlocking device according to claim 7 or 8, further comprising a release mechanism for transmitting a force applied from the tool to the lock mechanism to operate the lock mechanism to release the engagement with the guard screen. The lock mechanism includes a bolt that engages with the guard screen to restrict the opening operation of the guard screen;
10. The guard screen locking/unlocking device according to claim 9, further comprising a bolt holding portion that temporarily holds the bolt when the bolt is disengaged from the guard screen. a guard screen facing a fixed portion provided on the trailing side of a sliding door of an automatic door in an open state and capable of being opened and closed across the sliding door;
a lock portion provided inside at least one of the frame of the guard screen and the opening of the automatic door device, and restricting the opening operation of the guard screen;
A method for unlocking a guard screen locking/unlocking device, wherein the guard screen is formed with a hole for inserting a tool for releasing the restriction of the opening operation of the guard screen by the lock section,
The method of releasing the locking portion in response to insertion of the tool into the hole.

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