WO2020226144A1

WO2020226144A1 - Evacuation device

Info

Publication number: WO2020226144A1
Application number: PCT/JP2020/018442
Authority: WO
Inventors: 憲昌城戸; 哲也藤谷; 宗浩寺岡
Original assignee: ナカ工業株式会社
Priority date: 2019-05-08
Filing date: 2020-05-01
Publication date: 2020-11-12
Also published as: CN113825546A; KR102417933B1; CN113825546B; KR20210090552A; JPWO2020226144A1; JP6855644B1

Abstract

The purpose of the present invention is to provide an evacuation device with satisfactory operability.　This evacuation device is configured to include: a lifting table (4) driven up and down between a standby position held in an evacuation opening (2) opened on a floor (1) on the upper floor side and a lower floor surface (3); a rotatable hook member (6) that locks to a locked portion (5) arranged at the peripheral edge of the evacuation opening (2) in a locking position and holds the lifting table (4) at the standby position; a lock member (9) that locks a lock-side protrusion (7) to a hook-side protrusion (8) formed at the hook member (6) in a lock position to restrict the movement of the hook member (6) to a locking release position, and allows the lifting table (4) to descend by moving the hook member (6) to the locking release position by the weight of the lifting table (4) accompanying the movement to the lock release position; and a lock operation part (10) that rotationally operates the lock member (9).

Description

Evacuation device

This disclosure relates to evacuation equipment.

As an evacuation device for moving the elevator platform between the upper and lower floors, the one described in Japanese Patent No. 5648248 is known.

In this conventional example, the evacuation platform is movable along a guide member installed between the upper and lower floors, and is held on the upper floor by locking the locking member provided on the guide member, and the descent operation is performed by the locking member. Is retracted from the locked position with the lift.

However, in the above-mentioned conventional example, since it is necessary to move the locking member in which a large frictional force is generated due to the load of the elevating table to the retracted position when the elevating table is lowered, a large operating force is required and the operability is operability. There is a problem that it gets worse.

The present disclosure is made to eliminate the above drawbacks, and an object of the present disclosure is to provide an evacuation device having good operability.

According to the present disclosure, the above object is
A lift that is driven up and down between the standby position held in the evacuation opening opened on the upper floor and the lower floor,
A rotatable hook member that locks to the locked portion arranged on the periphery of the evacuation opening at the locked position and holds the elevator in the standby position.
At the lock position, the lock side protrusion is locked to the hook side protrusion formed on the hook member to regulate the movement of the hook member to the unlocked position, and the weight of the lift is increased as the hook member moves to the unlocked position. A lock member that moves the hook member to the unlocked position and allows the lift to be lowered.
A lock operation unit that rotates the lock member and
This is achieved by providing an evacuation device with.

The hook member is restricted from moving in the unlocking direction by the lock member and holds the elevating table in the standby position. When the restriction by the lock member is released, the hook member moves to the unlocking position by the weight of the elevating table. ..

In the present disclosure in which the lock member is not directly operated, the lever ratio at the time of operating the lock member, the contact state of the lock portion between the hook member and the lock member, and the like can be appropriately determined, so that the release operation force is reduced. It is possible to improve the operability.

In addition, the evacuation device
The lock member is urged toward the lock position at the unlock position and is also urged to the lock position side.
The lock member and the hook member block each other in the movement path in the lock position direction and the movement path in the lock position direction, and are held at the unlock position and the unlock position.
The hook member can be configured to be provided with an interference protrusion that comes into contact with the locked portion and drives the hook member toward the locking position when the lift is raised.

In this embodiment, when the lock member is moved to the unlock position in the standby position, the hook member is released from the regulation by the lock member, and the lock is released by the weight of the lift. The hook member that has moved to the unlocked position is restricted from moving in the locked position direction by the lock member that has moved to the unlocked position, and stays at that position.

On the other hand, the hook member is provided with an interference protrusion, and when the lift is raised while holding the unlocked state, the interference protrusion abuts on the locked portion and the hook member shifts to the locked position. To do. As a result, the movement path of the lock member blocked by the locking member to the lock position side is opened, and the lock member shifts to the lock position by the urging force in the lock position direction, and thereafter, the lift is held in the standby position. ..

With the above configuration, when shifting from the unlocked position to the locked position, the hook member moves directly to the locked position so as to cover the locked portion, so that the locking operation is reliably performed. , Operation reliability is improved.

It is possible to urge the hook member and the lock member to the unlocked position and the locked position side, respectively, by attaching a torsion spring to each of them.
By connecting the hook member and the lock member with a tension member, the structure can be simplified.

Holding the lock member at the lock position while the hook member is locked to the locked portion can be realized by providing the lock member with an appropriate stopper member for determining the rotation end on the lock position side. If the rotation end of the lock member is determined without using it as the stopper member, the structure becomes simple.

Such an evacuation device
The center of rotation of the lock member is arranged at a position where a rotational force is generated toward the lock position side due to a load applied from the hook side protrusion to the lock side protrusion.
The lock member can be configured to be provided with a hook contact portion that contacts the edge of the hook member on the unlocked position side and regulates rotation of the lock member beyond the lock position.

In this example, when the lock member receives a force in the unlocking position direction from the hook member, a rotational force that tries to rotate beyond the lock position is generated, but in the lock member, the hook contact portion is in pressure contact with the hook member. Is held in the locked position.

When the lock member further receives a force in the unlocking direction from the hook member in this state, the rotation of the lock member is restricted, so that the lock member generates an axial force such as a compressive force in the rotation center direction. , The lock member is maintained as it is, and the locked state of the hook member is maintained.

Further, when the lock side protrusion and the hook side protrusion form an evacuation device formed on a concentric circle centered on the rotation center of the lock member, the operating force of the lock member toward the unlock position side is reduced. Therefore, it is possible to improve the operability.

In addition, as another aspect of the present disclosure, the evacuation device is
A wire device whose one end is connected to the lock member and transmits the operating force of the lock operation unit to the lock member.
It can be configured to have a wire guide that guides the operating force transmission direction of the wire device to the lock member in a plane parallel to the rotational operation surface of the lock member.

In this embodiment, one end (operating side end) of the wire device is connected to the locking member that performs the unlocking operation of the hook member, and the operating direction of the operating side end is set to the rotating operating surface of the locking member by the wire guide. Guided in parallel planes.

As a result, the operating force applied to the lock operating portion to which the other end (operating side end) of the wire device is connected is efficiently transmitted to the releasing operating force of the hook member, so that the operating feeling is improved. be able to.

in this case,
A pair of lock members are arranged at positions where the rotational operation surface is parallel to the left and right side wall surfaces of the guide column that guides the lift, and sandwiches the left and right side walls of the guide column.
The wire device can form an evacuation device connected to an operating rod that connects the lock members.

Further, as another aspect of the present disclosure,
It has a wire device that transmits the operating force of the lock operation unit to the lock member placed near the guide column.
An evacuation device can be configured in which a conversion unit that converts the operating direction of the wire device into the operating direction of the lock member in the unlocking direction is interposed between the wire device and the lock member.

The locked portion can be appropriately arranged at the periphery of the evacuation opening, but it is desirable to provide the locked portion near the evacuation opening of the guide column in order to ensure strength. In this case, the hook member and the lock The members are arranged at positions close to the guide columns on the lift.

On the other hand, various parts such as the connection part between the slow-down device and the guide support, the connection part with the evacuation opening of the guide support, or the leg of the handrail when the handrail is installed on the elevating table so that it can be tilted down. Is densely packed in a narrow space, and it is necessary to route the wire device to prevent interference with parts that lead to wire cutting and kinking.

However, if the bending curvature of the wire device is reduced, the friction at the sliding contact portion of the inner wire with the outer cable increases, and it is necessary to give a large operating force to the operating portion, which causes a decrease in operability.

In this embodiment in which the conversion portion is arranged between the wire device and the lock member, the wiring path of the wire device is prevented from interfering with other parts and the bending portion having an excessive bending curvature is not generated. Since it can be determined, the operability can be improved and the operation reliability can be improved.

Also,
A pair of lock members that operate in a plane parallel to the front and rear walls of the guide column are arranged.
The conversion part is
An operating rod that connects the lock members and
It is connected to a wire device with a rod locking portion that locks to the shaft portion of the operating rod, and has an release lever that rotates in the direction in which the rod locking portion moves toward the unlocked position side of the lock member during a wire tension operation. An evacuation device can be configured.

In this embodiment, when a tensile operating force is applied to the wire device, the release lever rotates to translate the operating rod in a predetermined direction and operate the lock member.

further,
The lock members are arranged symmetrically on the elevator platform,
When a pair of lock operation units are arranged on the handrails installed on the elevating table and the lock operation units are provided with gear-shaped parts that mesh with each other, the lock operation units are arranged on either the left or right handrail. Even if the lock operation unit of the above is operated, the lock operation unit on the opposite side can be operated in synchronization with each other, so that the left and right lock members can be operated in exact synchronization.

As a result, it is possible to reliably prevent one of the left and right sides from being unlocked in advance of the other, and it is possible to improve operation reliability.

According to the present disclosure, the operability of the evacuation device can be improved.

It is a figure which shows the evacuation device by this disclosure. It is a figure which shows the state which the lid is open. It is sectional drawing of the modified example of a case. It is the 3B part enlarged view of FIG. 3A of the modified example of a case. It is a top view of a lift. It is an enlarged view of part 5A of FIG. It is a perspective view which shows the state which the wheelchair is put on the elevating table. It is an enlarged view of the main part of FIG. It is a figure which shows the main part of the handrail of a lying posture. It is a figure which shows the operation of a handrail and shows immediately after the start of transition to the standing posture. It is a figure which shows the operation of a handrail and shows just before the end of the transition operation to a standing posture. It is a figure which shows the operation of a handrail and shows the standing posture. It is a figure which shows the operation of the handrail and shows the temporary holding posture. It is a figure which shows the deformation example of a handrail, and shows just after the start of transition to the standing posture. It is a figure which shows the deformation example of a handrail and shows the temporary holding posture. It is a figure which shows the deformation example of a handrail and shows the standing posture. It is a perspective view which shows the lock operation part. It is a front view of the lock operation part. It is a rear view of the lock operation part. It is a figure which shows the slope body in a set state. It is a figure which shows the slope body in the suspended state. It is a side view of the flap in a locked state. It is a link configuration diagram of the flap in the locked state. It is a figure which shows the operation of a flap and shows the landing state. It is a figure which shows the operation of a flap and shows just before the elevating table reaches a standby position. A modified example of the slope body is shown, and it is a perspective view of the protrusion forming part. It is a figure which shows the deformation example of the slope body and shows the set state. It is a figure which shows the operation of the slope body of FIG. 17 and shows the suspended state. It is a figure which shows the operation of the slope body of FIG. 17 and shows the state just before the transition to the set state. It is a perspective view which shows the conversion part. It is a figure which shows the operation of a hook member and shows the locked state. It is a figure which shows the operation of a hook member, and shows just after the lock state is released. It is a figure which shows the operation of the hook member, and shows the unlocked state. It is a figure which shows the operation of a hook member, is unlocked, and shows the state which the raising and lowering platform move. It is a perspective view which shows the other embodiment of a lift holding mechanism. It is a figure which shows the operation of the hook member of another embodiment, and shows the locked state. It is a figure which shows the operation of the hook member of another embodiment, and shows just after the lock state is released. It is a figure which shows the operation of the hook member of FIG. 22, and shows the state which the hook auxiliary member came into contact with the locked part by raising the elevating table. It is a figure which shows the operation of the hook member of FIG. 22, and shows the state just before the elevating table is further raised and the interference protrusion part comes into contact with the locked part. The operation of the conversion unit is shown, and it is the 24A direction arrow view of FIG. The operation of the conversion unit is shown, and it is sectional drawing of 24B-24B of FIG. 24A. It is a figure which shows the operation of the conversion part, and shows the state which the release lever is rotationally driven. It is a figure which shows the operation of the conversion part, and shows the state which the operation force to the lock operation part is released. It is a plan view which shows the other embodiment of this disclosure, and is the figure which corresponds to FIG. It is the 27A part enlarged view of FIG. It corresponds to FIG. 20 which shows the operation of the hook member, and is the figure which shows the locked state. Corresponding to FIG. 20 showing the operation of the hook member, is a diagram showing immediately after the locked state is released. It corresponds to FIG. 20 which shows the operation of the hook member, and is the figure which shows the unlocked state. It corresponds to FIG. 20 which shows the operation of the hook member, and is the figure which shows the state which is unlocked, and the lift is moving. It is a perspective view which shows the lift holding mechanism. It is a figure which shows the operation state of a lock member, and shows the state which does not operate a lock operation part. It is a figure which shows the operation state of the lock member, and shows the state which operated the lock operation part. It is a perspective view which shows the lower end part of a handrail. It is a side surface showing a handrail in an upright posture. It is sectional drawing which shows the operation of a handrail, and is the figure which shows the lying posture. It is sectional drawing which shows the operation of a handrail, and is the figure which shows the transition from the lying posture to the standing posture. It is sectional drawing which shows the operation of a handrail, and is the figure which shows the standing posture. It is sectional drawing which shows the operation of a handrail, and is the figure which shows the state which operated the lock operation member to the operation position side. It is sectional drawing which shows the operation of a handrail, and is the figure which shows the state which the lock operation member was rotated to the operation position. It is sectional drawing which shows the operation of the handrail, and is the figure which shows the state which the handrail is rotated to the lying posture side.

As shown in FIG. 1 and below, the evacuation device includes a case 2a that is fitted and fixed to an opening opened in the floor 1 on the upper floor side to form an evacuation opening 2, and a lid for closing the evacuation opening 2. It has a body 21, a guide support 14 which is erected on the floor surface 3 of the lower floor and whose upper end is fixed to the evacuation opening 2, and an evacuation platform 4.

As shown in FIG. 1, the evacuation platform 4 has a standby position held in the evacuation opening 2 and an evacuation position where the evacuation platform 4 descends from this standby position along the guide column 14 and lands on the lower floor surface 3. It is driven up and down between.

The guide column 14 is a hollow pipe body having an appropriate buckling strength, and is formed by, for example, extruding aluminum. The lower end of the guide support 14 is fixed to the floor slab on the lower floor, and the upper end is fixed to the case 2a.

Further, a rack groove 14a is formed on one side wall surface of the guide support column 14. As shown in FIG. 1, the rack groove 14a is formed by forming recesses 14b at a predetermined pitch in a high-strength plate material such as stainless steel, and is formed over substantially the entire length of the guide column 14.

Further, in this case, as shown in FIGS. 3A and 3B, when the recess 2b is formed at the lower end of the peripheral edge of the case 2a, the lower lid and the lower case 2a when the elevating table 4 rises from the retracted position and reaches the standby position. It is possible to prevent the generation of collision noise with the edge.

Further, as shown in FIGS. 4 and 5, a weight 22 suspended by a wire (not shown) is housed in the hollow portion of the guide support column 14, and after the elevating platform 4 reaches the lower floor, the user When the vehicle gets off the platform 4, the platform 4 returns to the standby position due to the weight of the weight 22.

As shown in FIG. 6, the lift 4 is formed so as to have a sufficient size and a load capacity so that the user of the wheelchair 23 can ride, and the wheelchair 23 is shown in FIGS. You can board the wheelchair-mounted area 4a in the center from the rear edge on the left side. An auxiliary space 4b for a caregiver is formed diagonally behind the wheelchair mounting area 4a.

In the present specification, the traveling direction of the wheelchair 23 (right side in FIG. 4) is referred to as "front", the boarding side is referred to as "rear", and the vertical direction is referred to as "side" in the figure.

As shown in FIGS. 4 and 5, support column insertion openings 4c through which the guide columns 14 are inserted are provided on each side of the elevating table 4, and the elevating table 4 is provided before and after the support column insertion openings 4c are sandwiched. A slow descent device 24 for reducing the descent speed is installed. A pinion 24b that meshes with the recess 14b of the guide support column 14 is fixed to the rotating shaft 24a of the slow-down device 24, and the speed of descent of the lifting platform 4 is reduced by decelerating the rotation speed of the pinion 24b by the slow-down device 24. Is reduced.

Further, the elevating table 4 is provided with a roller 4d that comes into contact with the front-rear wall surface of the guide column 14 and the outer side wall surface, and wobbling during ascending / descending is regulated.

Further, a handrail 25 is arranged at the front edge of the lift 4. The handrail 25 is formed by bending a pipe body, and has a horizontal rod 25a and a vertical rod 25b extending in a direction perpendicular to both ends of the horizontal rod 25a, and is formed in a U shape. The handrail 25 is mounted on the elevating table 4 by rotatably connecting the free ends of the vertical rods 25b to the handrail bracket 26 fixed to the elevating table 4.

As shown in FIG. 1, the handrail 25 may rotate and move between a lying posture along the surface of the lift 4 and an standing posture in which the horizontal rod 25a is pulled upward as shown in FIG. it can. The handrail 25 is urged to the standing posture side, maintains the lying posture by closing the lid body 21, and automatically shifts to the standing posture with the opening operation of the lid body 21.

Figures 7 and 8 show the details of the handrail 25. As shown in FIG. 8, each vertical rod 25b of the handrail 25 is connected to the handrail bracket 26 at a position slightly above the lower end in order to make the lower end function as a lock operation piece 25c, and is connected to the handrail bracket 26 by a torsion spring 27, that is, on the standing posture side, that is, , The clockwise urging force in FIG. 8 is given.

As shown in FIG. 8, the handrail bracket 26 is formed with an elongated hole-shaped moving passage 26a for connecting the lock position, the unlock position, and the temporary holding position, which will be described later, and is bridged between the handrail brackets 26. Both ends of the rod-shaped handrail lock body 28 are inserted into the moving passage 26a.

As shown in FIG. 9C, the lock position is provided at a position where the handrail lock body 28 blocks the movement path of the lock operation piece 25c to the prone position side when the handrail 25 is in the upright posture, and the handrail lock is set in FIG. 9B. The unlocking position where the body 28 is located is provided at a position where the handrail lock body 28 does not interfere with the movement locus of the lock operation piece 25c.

Further, the temporary holding position where the handrail lock body 28 is located in FIG. 9D extends rearward from the unlocked position, and the end of the non-interference path 26b that does not interfere with the movement locus of the lock operation piece 25c is terminated by the lock operation piece 25c. In this example, a notch-shaped recess 26c into which the handrail lock body 28 can be fitted is extended in the direction of the center of rotation of the handrail 25.

Further, in order to determine the position of the handrail lock body 28 in the moving passage 26a, the handrail lock body 28 has a first tension spring 29 having one end fixed to the rotation center (C25) of the handrail 25, and one end. The second tension spring 30 is connected to the front end of the handrail bracket 26.

Therefore, in this example, when the lid 21 is opened, the handrail 25 moves from the lying posture shown in FIG. 8 to the standing posture side by the restoring force of the torsion spring 27. First, as shown in FIG. 9A, the lock operation piece 25c interferes with the handrail lock body 28 held at the lock position with the shift to the standing posture, and further moves to the standing posture side. As shown in 9B, the handrail lock body 28 is pushed out toward the unlocked position side.

After that, when the handrail 25 further moves to the standing posture side, the handrail lock body 28 returns to the locked position as shown in FIG. 9C by the restoring force of the first and second tension springs 29 and 30.

When the handrail 25 is in the upright position, the handrail lock body 28 in the locked position restricts the movement of the lock operation piece 25c in the lodging position direction by the wall surface of the moving passage, as shown in FIG. 9C. The handrail 25 does not fall even if a force in the lodging direction is applied to the handrail 25.

From this state, as shown in FIG. 9D, when the handrail lock body 28 is moved beyond the unlocked position to the temporary holding position, the handrail lock body 28 is pressed against the end wall of the temporary holding position by the first tension spring 29. At the same time, the movement of the second tension spring 30 in the lock position direction due to the urging force is blocked by the stopper wall 26d formed by the wall surface of the recess 26c, and as a result, the second tension spring 30 is not separated from the temporary holding position.

Further, as shown in FIGS. 4 and 5, since the central portion of the handrail lock body 28 is open to the rear of the elevating table 4, the handrail can be simply pushed by pushing the central portion of the handrail lock body 28 rearward. The lock body 28 moves to the end of the non-interference path 26b, and after that, when the pushing operation is completed, the lock body 28 can be moved to the temporary holding position by the restoring force of the first tension spring 29.

Further, when the handrail 25 is laid down from the state of FIG. 9D, that is, the handrail 25 is in the upright position and the handrail lock body 28 is in the temporary holding position, the handrail lock body 28 is temporarily held by the lock operation piece 25c. It is pushed out of the holding position into the non-interfering path 26b and then pulled back to the locked position by the restoring force of the second tension spring 30.

Therefore, in this example, after using the evacuation device, the handrail lock body 28 is moved to the temporary holding position in a state where the lifting table 4 is returned to the standby position, and then the handrail 25 is placed in the lodging position simply by closing the lid 21. Can be moved to.

In this example, as shown in FIG. 8, one end of the torsion spring 27 is inserted into the elevating table 4 through the mounting piece 26e of the handrail bracket 26 to the elevating table 4, but it is shown in FIGS. 10A, 10B, and 10C. As shown, it can also be locked to the rear folding piece 26f of the handrail bracket 26.

In each subsequent embodiment, components substantially the same as those in the above-described embodiment are designated by the same reference numerals in the drawings, and description thereof will be omitted.

A lock operation unit 10 for operating the lock member 9, which will be described later, is arranged on the above handrail 25. The lock operation unit 10 is provided at the center of the lateral rod 25a of the handrail 25 so that the person being assisted in the wheelchair 23 can operate any upper limb that is not inconvenient, or the assistant can operate in any auxiliary space 4b. A pair of horizontal rods 25a are provided at symmetrical positions with respect to the center position so that the person being assisted can be operated over the shoulder even when riding.

A gear-shaped portion 20 that meshes with each other is formed in the pair of lock operation units 10 so that the inner wire 15b, which will be described later, can be operated in synchronization with any of these lock operation units 10.

Further, each lock operation unit 10 can be operated by the person being assisted by simply placing his / her arm on the lock operation unit 10 and putting his / her weight on it, or by simply pushing the lock operation unit 10 over the shoulder of the person being assisted. As shown in FIGS. 6 and 11, consideration is given so that the lock member 9 can be unlocked by pushing it downward in a lever shape.

The operation of the lock member 9 by the lock operation unit 10 is performed by using a wire device 15 in which the inner wire 15b is movably inserted into the outer cable 15a, and as shown in FIGS. 11, 12A, 12B, the rotation center. An inner wire 15b is connected to each lock operation unit 10 that can be rotated around (C10).

In order to use the wire device 15 as a pull specification, the inner wire 15b is inserted into the lock operation unit 10 on the opposite side of the lock operation unit 10 to be connected. As shown in FIG. 11, the wire device 15 connected to the lock operation unit 10 is drawn into the internal space of the handrail 25 from the wire introduction opening 25d opened in the pipe-shaped handrail 25, and then as shown in FIG. Then, the wire is pulled out from the wire lead-out opening 25e to the outside of the handrail 25, is arranged along the vertical rod 25b of the handrail 25 at an appropriate height on the surface of the elevating table 4, and is connected to the conversion unit 16 described later.

Further, a flap 31 is rotatably connected to the rear end of the wheelchair mounting area 4a of the lift 4 around the rotation axis (C31) in the vertical direction, and the lift 4 is connected to the lower floor surface 3 behind the flap 31. An inclined surface 32 for absorbing a step with the floor surface 3 on the lower floor is formed in the state of landing on the floor.

As will be described later, the flap 31 is formed so as to be unlocked and allowed to rotate downward when it lands on the lower floor surface 3, and after landing on the lower floor surface 3, the wheelchair 23 When the flap 31 is retracted, the flap 31 rotates so as to be pushed down, the free end portion rides on the inclined surface 32, and the flap 31 can proceed to the lower floor surface 3 as it is.

Further, in order to facilitate the mounting of the wheelchair 23 at the standby position on the upper floor side, the slope body 33 is connected to the evacuation opening 2.

As shown in FIG. 6, the slope body 33 is a plate body having a width dimension enough for the wheelchair 23 to pass through, and as shown in FIG. 13, the set position where the free end portion rides on the lift table 4. And, as shown in FIG. 14, it rotates around the center of rotation (C33) between the suspended posture and the suspended posture from the evacuation opening 2.

The set roller 34 and the bearing roller 35 are connected to the free end of the slope body 33. As shown in FIG. 13, at the set position, the bearing roller 35 rides on the inclined surface 34 and bears the load of the wheelchair 23 passing over the slope body 33.

Further, as shown in FIG. 13, the flap 31 described above is in a state of riding on the free end of the slope body 33 when the elevator 4 is in the standby position, and in this state, the floor surface 1 on the upper floor side 1 A slope body 33 is bridged between the floor surface 1 and the surface of the lift 4 to eliminate the step between the floor surface 1 on the upper floor side and the surface of the lift 4.

When the lift 4 descends in this state, as shown in FIG. 14, the slope body 33 that has lost the support by the inclined surface 32 rotates downward due to its own weight and shifts to the suspended posture.

In the set roller 34, when the slope body 33 is in the suspended posture and comes into contact with the upper surface of the inner end portion of the auxiliary space 4b of the ascending platform 4, the slope body 33 is set in the set position direction, that is, counterclockwise in FIG. It is arranged so as to generate a rotating operation force around it.

Therefore, in this example, when the lift 4 moves to the standby position side again after descending, the set roller 34 first comes into contact with the upper surface of the inner end portion of the auxiliary space 4b of the lift 4, and the slope body 33 rises with the lift 4. At the same time, it returns to the set position and returns to the initial state shown in FIG.

Further, a damper 36 is interposed between the evacuation opening 2 and the back surface of the slope body 33 in order to absorb the impact when the lift 4 and the set roller 34 come into contact with each other.

As described above, the flap 31 is rotatably connected to the rear end portion of the wheelchair mounting area 4a of the lift 4 in the vertical direction, and the standing posture shown in FIG. 14 and the lying posture in which the free end rides on the inclined surface 32. It rotates between the two and is urged to the standing posture side by the torsion spring 31a wound around the rotating shaft (C31). The angle of the flap 31 in the standing posture is determined so as to function as a wheel chock of the wheelchair 23 on the lift 4 in consideration of the length dimension of the flap 31 in the front-rear direction.

The flap 31 is controlled to maintain the standing posture by the flap lock portion 37, and is locked and the standing posture is maintained except when the lift 4 is raised and lowered, that is, when the standby position and the landing on the lower floor surface 3 are not reached. Then, when the elevating table 4 is landed at the elevating end position, that is, the standby position and the floor surface 3 on the lower floor, the lock is released and the movement to the prone position side is allowed.

As a result, while the lift 4 is descending, the standing posture of the flap 31 is maintained to prevent the wheelchair 23 from falling from the lift 4, and the lift end position of the lift 4, that is, the standby position and the lower floor. When landing on the surface 3, the movement to the prone position is allowed and does not hinder the passage of the wheelchair 23.

As shown in FIGS. 15A and 15B, the flap lock portion 37 is rotatably connected to the lock control body 38 rotatably connected to the lift 4 and the free end portion of the flap 31 and the lock control body 38. It has a flap lock body 39, and

lock stoppers

38a and 39a that lock each other in a locked state are formed in each.

The lock control body 38 is rotatable around the center of rotation (C38) between the lock position and the unlock position, and the flap lock portion 37 is a lock of the lock control body 38 in which the flap lock body 39 is in the lock position. The lock state is set by moving to the locking position where the lock stopper 39a is locked to the stopper 38a.

Further, a torsion spring 40 is wound around a rotation shaft (C39M) connecting the lock control body 38 and the flap lock body 39, and as a result, the flap 31 can rotate around the center of rotation (C39). The flap lock body 39 to be connected is urged to the locking position side by the urging force of the torsion spring 31a, and the lock control body 38 is urged by the urging force of the torsion spring 40 interposed between the flap lock body 39 and the flap lock body 39. It is urged to the lock position side.

As shown in FIG. 15A, the connection position between the flap lock body 39 and the lock control body 38, the connection position of the lock control body 38 to the lift 4 and the lock positions of the

lock stoppers

38a and 39a in the locked state are determined. The

lock stoppers

38a and 39a change the intersection angle (θ) between the flap lock body 39 and the lock control body 38 when the operating force for moving the flap 31 in the lodging direction is applied to the connection point with the flap lock body 39. It is set so that the relationship is regulated by locking.

That is, in FIG. 15B, when a rotational operation force in the lodging direction is applied to the flap 31, a force (F) acts on the connection point (C39) of the flap lock body 39 with the flap 31, and the lock control body 38 is affected. Generates a counterclockwise rotational force. The locking position between the

lock stoppers

38a and 39a is a position that regulates a decrease in the intersection angle (θ) between the lock control body 38 and the flap lock body 39 on the sharp angle side due to the counterclockwise rotation of the lock control body 38. As a result, the lock control body 38 and the flap lock body 39 behave substantially as one body with respect to the load in the lodging direction of the flap 31.

By integrating the lock control body 38 and the flap lock body 39, the flap 31, the integrated body of the lock control body 38 and the flap lock body 39, and the lift 4 form a three-section link, and the freedom of movement is eliminated. Therefore, the flap 31 can maintain the standing posture.

Further, the lock control body 38 extends downward from the connection point (C38) to the elevating table 4, and when the elevating table 4 lands on the lower floor surface 3, the lock control body 38 is rotated clockwise in FIG. 15A. A detection protrusion 38b that rotates in the unlocking direction) is provided.

Therefore, in this example, when the elevator 4 descends and lands on the lower floor surface 3, the detection protrusion 38b is pushed by the lower floor surface 3 and rotates clockwise in FIG. 15A, that is, in the unlocked position direction. .. When the lock control body 38 rotates to the unlocked position, as shown in FIG. 16A, the lock stopper 39a of the flap lock body 39 is unlocked, and the connection point (C39M) between the lock control body 38 and the flap lock body 39 is released. The restraint of the flap lock body 39 is released, the flap lock body 39 can be rotated, and the flap 31 can move in the lodging direction.

When the wheelchair 23 moves in this state, the flap 31 is pushed by the wheels in the direction of the arrow in FIG. 16A and the free end rides on the inclined surface 32, so that the wheelchair 23 can get off.

On the other hand, when the lift 4 rises and reaches the vicinity of the standby position, the slope body 33 shifts from the suspended posture to the set position as described above.

As shown in FIG. 13, the free end portion of the slope body 33 is provided with an operation protrusion 41 that moves the flap lock body 39 in the unlocking direction with the lock control body 38 when moving to the set position. In this example, the operating protrusion 41 is formed in a protruding shape that presses the arc-shaped pressed side 39b formed on the flap lock body 39.

As shown in FIG. 16B, as the lifting table 4 approaches the standby position, the operating protrusion 41 approaches the pressed side 39b of the flap lock body 39, and the pressed side 39b is eventually moved by the operating protrusion 41. Pushed forward.

The lock stopper 39a of the flap lock body 39 whose pressed side 39b is pushed forward by the operation protrusion 41 is released from the lock stopper 38a of the lock control body 38, and the lock control body 38 is further unlocked. In the direction, the flap 31 is driven in the lodging position direction.

The pressed side 39b of the flap lock body 39 is set so that the free end of the flap 31 rides on the slope body 33 after returning to the set position of the slope body 33, and the rotational drive for the flap lock body 39 is stopped in that state. As described above, the wheelchair 23 can smoothly board from the floor 1 on the upper floor side through the slope body 33 and the flap 31 in the state where the lift 4 is returned to the standby position.

Figures 17A, 17B, 18A, and 18B show modified examples of the slope body 33. In this modification, the slope body 33 includes a slope main body 47 having a set roller 34 connected to the front end, and a protrusion forming portion 48 fixed to the front end of the slope main body 47. As shown in FIG. 17A, the protrusion forming portion 48 is formed by rotatably connecting a roller-shaped operating protrusion 41 to the front end of the housing 48a to which the support roller 35 is connected. Both ends of the operation protrusion 41 are inserted into the elongated holes 48b formed in the housing 48a and are prevented from coming off by nuts or the like, and are further urged forward by the torsion spring 48c.

Therefore, in the present modification, when the elevating table 4 is in the standby position, the roller-shaped operating protrusion 41 comes into contact with the pressed side 39b of the flap lock body 39, as in the above-described embodiment.

Further, when the elevating table 4 rises from the suspended posture shown in FIG. 18A, the relative positions of the elevating table 4 and the slope body 33 deviate from the set value due to the accumulation of dimensional errors, and the operation protrusion 41 shifts to the pressed side 39b. For example, the length (moment arm) of the perpendicular line drawn from the center of rotation (C39) to the direction line of the operating force may be shortened in the direction of the center of rotation (C39) of the flap lock body 39. In this case, since a sufficient rotational operation force cannot be applied to the flap lock body 39, there is a risk that smooth operation will be hindered.

However, if the operating protrusion 41 is made movable in the elongated hole 48b as in this modification, the operating protrusion 41 moves rearward along the elongated hole 48b even in the case described above. By doing so, the contact angle with the pressed side 39b changes and the moment arm becomes large, so that smooth operation is guaranteed.

The elevating table 4 configured as described above is held in the standby position by using the elevating table holding mechanism 42.

As shown in FIG. 19, the elevating table holding mechanism 42 sets the locked portion 5 formed around the standby position, the hook member 6 engaged with and disengaged from the locked portion 5, and the hook member 6 engaged and disengaged. It is composed of a lock member 9 to be controlled.

In this example, the locked portions 5 are formed by U-shaped bolts, and a total of four are fixed to the front and rear wall surfaces of a pair of two guide columns 14 (see FIG. 4) arranged symmetrically. The hook member 6 and the lock member 9 are arranged on the elevating table 4 corresponding to the respective locked portions 5, and each guide column 14 has two pairs, a total of four pairs of the hook member 6 and the lock member. Reference numeral 9 denotes operation in an operating surface parallel to the front and rear wall surfaces of the guide column 14.

The hook member 6 is rotatable around the center of rotation (C6) between the locking position shown in FIG. 20A and the unlocking position shown in FIG. 20C, and is locked at the upper end portion at the locking position. A locking hook portion 6a that locks to the portion 5 and an interference protrusion 11 at a position facing the locking hook portion 6a are provided.

As shown in FIG. 20D, the interference protrusion 11 is a relative movement path of the locked portion 5 when the hook member 6 is in the unlocked position, that is, the locked portion 5 when the elevating table 4 is raised and lowered. It is placed on a relative movement path.

Therefore, in this example, when the lift 4 rises from the state shown in FIG. 20D, the locked portion 5 first abuts on the interference protrusion 11 of the hook member 6, and the hook member 6 is rotationally driven to the locked position. .. As shown in FIG. 20A, the hook portion is located above the locked portion 5 by the rotation of the hook member 6 to the locked position, and is locked to the locked portion 5.

Further, the hook side protrusion 8 is projected from the lock release position side edge of the hook member 6. The locking surface between the hook-side protrusion 8 and the lock-side protrusion 7 described later is formed by an arc surface centered on the rotation center (C9) of the lock member 9.

In the locked state with the locked portion 5, a rotational force is generated in the hook member 6 in the unlocking direction due to the weight of the elevating table 4, and the locked state is maintained against this rotational force. The lock member 9 is arranged there.

The lock member 9 is arranged adjacent to the unlocking side edge of the hook member 6, is rotatable between the locking position of FIG. 20A and the unlocking position of FIG. 20C, and the hook member 6 is at the locking position. The lock-side protrusion 7 projecting from the side edge is locked to the hook-side protrusion 8 of the hook member 6. The lock member 9 and the hook member 6 are connected by a tension spring 12 as a tension member, and the tension spring 12 urges the lock member 9 toward the lock position when the hook member 6 is in the locking position.

When a rotational force is generated in the hook member 6 in the unlocking position direction (clockwise in FIG. 20A) while the lock side protrusion 7 is locked to the hook side protrusion 8, the lock member 9 has a rotation center (C9). A compressive force is generated toward the hook member 6, and the hook contact portion 13 formed on the side edge of the hook member 6 comes into contact with the hook member 6.

The position of the contact portion of the hook contact portion 13 with the hook member 6 is the region where the lock member 9 approaches when the hook member 6 moves to the unlocked position, that is, the rotation of the lock member 9 in this example. It is set above the center (C9).

Therefore, in this example, even if a rotational force in the unlocking position direction is generated in the hook member 6 due to the load of the lifting platform 4, the pressure contact force between the lock side protrusion 7 and the edge of the corresponding hook member 6 increases. By simply doing so, the hook member 6 does not rotate, and the locked state, that is, the holding state of the lift 4 in the standby position is maintained.

When the lock member 9 is rotated to the unlocked position from this state, the lock side protrusion 7 is released from the lock with the hook side protrusion 8 while moving on the arc surface of the hook side protrusion 8, and the lift is released. 4 starts descent. As shown in FIGS. 20B and 20C, the hook member 6 is released from the locked portion 5 and the hook member 6 is held by the tension spring 12 while the lock member 9 is held at the unlocked position. It is further pulled toward the unlocking position side, and the hook side protrusion 8 of the hook member 6 is locked to the step portion 9a of the lock member 9.

This state is the unlocked state, and once the hook member 6 is locked to the step portion 9a, the movement path of the lock member 9 to the lock position side is blocked by the hook member 6, so that the unlocked state is maintained. ..

As described above, after that, when the lift 4 is raised and the hook member 6 is locked to the locked portion 5, the lock member 9 is moved to the locked position by the tension spring 12, and then the locked state is maintained. Will be done.

21, 22A, 22B, 23A, 23B show a modified example of the lift holding mechanism 42. In FIGS. 21, 22A, 22B, 23A, and 23B, components substantially the same as those in the above-described embodiment are designated by the same reference numerals in the drawings, and description thereof will be omitted.

In this modification, the rack groove 14a is formed on the front and rear wall surfaces of the guide column 14, and the pinion 24b of the slow-down device 24 meshes with the rack groove 14a formed on the front wall surface indicated by the arrow in FIG. By arranging the rack groove 14a on the front and rear wall surfaces of the guide column 14, that is, the short side portion in this way, the short side portion has higher rigidity and the amount of bending is smaller than that of the long side portion. The meshing accuracy with the 24b is increased, smooth operation is possible, and the overall strength can be increased.

Note that in FIG. 21, the

wires

22a and 22b for suspending the weight 22 indicate pulleys.

Further, the lifting platform holding mechanism 42 operates in a plane parallel to the wall surface adjacent to the wall surface on which the rack groove 14a of the guide column 14 is formed, and is formed so as to be engageable and disengageable from the locked portion 5.

As shown in FIGS. 22A and 22B, the lifting platform holding mechanism 42 in this modified example is equipped with a hook auxiliary member 46 in addition to the hook member 6, the lock member 9, and the tension spring 12 described above. Similar to the above-described embodiment, the hook member 6 and the lock member 9 are provided with a hook side protrusion 8 and a lock side protrusion 7 and are rotatably mounted on a lift 4 around a rotation center (C6, C9). They are connected and operate in the same manner as in the above-described embodiment, and the lock members 9 are connected to each other by the operating rod 17.

The hook auxiliary member 46 is provided with a hook-shaped contact protrusion 46a coaxially with the hook member 6 so as to be rotatable relative to the hook member 6 and capable of contacting the locked portion 5 at the rear end portion. At the same time, an operating wall 46b is provided at the front end portion, and a relief elongated hole 46c is opened at the intermediate portion thereof.

The relief elongated hole 46c is formed in an arc shape centered on the rotation center (C6) of the hook member 6, and is formed with a curvature through which the rotation axis forming the rotation center (C9) of the lock member 9 can be inserted. To.

Further, the working wall 46b is located above the working protrusion 9b projecting from the lock member 9, and is formed at a position where it can come into contact with the working protrusion 9b.

As shown in FIG. 22A, when the hook member 6 is in the locked state, the contact protrusion 46a of the hook auxiliary member 46 is located slightly above the locked portion 5. When the hook member 6 is released from the locked portion 5 and the lift 4 starts to descend, the contact protrusion 46a of the hook auxiliary member 46 comes into contact with the locked portion 5, and is shown in FIG. 22B. As described above, the hook auxiliary member 46 rotates clockwise so that the rotation axis (C9) of the lock member 9 moves relative to the inside of the relief slot 46c.

Since the working wall 46b presses the working protrusion 9b of the lock member 9 with the rotation of the hook auxiliary member 46, the lock member 9 is rotationally driven to the stroke end position on the unlocking side.

Further, the hook member 6 and the hook auxiliary member 46 are given a counterclockwise urging force by a torsion spring (not shown), and when the hook member 6 is released from the lock and the lift 4 is lowered, FIG. 22A Return to the initial posture of.

On the other hand, when the lift 4 is raised, as shown in FIG. 23A, first, the contact protrusion 46a of the hook auxiliary member 46 comes into contact with the locked portion 5 and rotates clockwise. With the rotation of the hook auxiliary member 46, the operating protrusion 9b of the lock member 9 is pushed downward by the operating wall 46b of the hook auxiliary member 46, and rotates toward the unlocking position side as shown in FIG. 23B. The interference protrusion 11 of the hook member 6 comes into contact with the locked portion 5, and then the hook member 6 moves to the locking position by the force applied to the interference protrusion 11.

As described above, in the present modification, when the lift 4 rises and moves to the standby position, the hook member 6 does not collide with the locked portion 5, so that the hook member 6 is damaged. Can be reliably prevented from occurring.

The operation of the lock member 9 is performed by the conversion unit 16 connected to the lock operation unit 10 arranged on the handrail 25 as described above.

As shown in FIG. 19, the conversion unit 16 connects the pair of lock members 9 arranged to face each other, and includes an operating rod 17 arranged along the rack groove 14a forming wall surface of the guide column 14 and an opening lever 19. Has. A collar 43 having a tubular shape through which the operating rod 17 is movably inserted and flanges 43a formed at both ends is attached to the central portion of the operating rod 17 in the longitudinal direction.

As shown in FIGS. 19 and 25, the release lever 19 has a mounting piece 19a and a rising piece 19b formed by bending a plate material into an L shape, and the lever 19 is fixed on the lift 4 by the mounting piece 19a. It is rotatably connected to the bracket 44.

The release lever 19 is arranged in a posture in which the rising piece 19b is orthogonal to the operating rod 17, and as shown in FIG. 24B, the rising piece 19b has an arcuate shape that abuts on the outer circumference of the collar 43 over substantially half a circumference. An elongated rod-shaped rod locking portion 18 having a toe end 18a is formed. The opposite end of the rod locking portion 18 with respect to the locking end 18a is formed with a downward opening portion 18b for providing an entrance for inserting the collar 43 when mounted on the collar 43.

As shown in FIG. 24A, the rotation center (C19) of the release lever 19 is arranged slightly closer to the center of the elevating table 4 from the operating rod 17, and the inner wire 15b of the wire device 15 is located on the opposite side of the rotation center. Are concatenated.

The wire device 15 is arranged along the surface of the elevating table 4 at an appropriate height on the elevating table 4 in parallel with the vertical rod 25b of the handrail 25, that is, the operating rod 17, and the lock operation unit 10 of the handrail 25. When the operation is performed, the inner wire 15b is pulled toward the lock operation portion 10 and the release lever 19 rotates about the rotation axis (C19) as shown in FIG. 25A. As the release lever 19 rotates, the locking end 18a of the rod locking portion 18 moves forward, and the collar 43 and the operating rod 17 inserted into the collar 43 are initially pushed by the locking end 18a. It moves toward the center of the lift 4 by a predetermined distance (δ) from the position.

The moving distance (δ) corresponds to the operating stroke from the lock position to the unlock position of the lock member 9, and as a result, the lock member 9 moves to the unlock position and moves to the locked portion 5 by the hook member 6. Is released from the locked state and the lift 4 starts to descend.

Further, the flange 43a of the collar 43 is urged to the initial position side by the compression spring 45, and when the operating force on the lock operation unit 10 is released after the release operation on the lock member 9, the collar 43 is restored by the restoring force of the compression spring 45. Generates an operating force in the initial position direction.

The lever bracket 44 is formed so that the straight portion 18c (see FIG. 24B) following the locking end 18a of the rod locking portion 18 is formed in a slightly inclined shape in consideration of the vertical component during operation of the lock member 9. Since the collar 43 is provided at an angle, the collar 43 returns to the initial position through the straight portion 18c of the rod locking portion 18, and the release lever 19 returns to the initial position accordingly (see FIG. 25B). When the release lever 19 returns to the initial position, the inner wire 15b of the wire device 15 is also driven to the initial state side, and the lock operation unit 10 also returns to the initial state.

After that, when the hook member 6 causes a locking operation to the locked portion 5, the lock member 9 moves to the lock position side as described above, and the operating rod 17 moves accordingly, and the conversion unit 16 returns to the initial state shown in FIG.

FIG. 26 and below show other embodiments of the present disclosure. In this example, the rack groove 14a is formed on the rear wall surface of the guide column 14, and a pinion (not shown) of a slow-moving device (not shown) meshes with the rack groove 14a. Further, hook members 6 and A pair of locked portions 5 forming the elevating table holding mechanism 42 in cooperation with the lock member 9 are fixed at the backward position.

The hook member 6 and the lock member 9 are arranged on the elevating table 4 corresponding to each locked portion 5, and rotate with a surface parallel to the left and right side wall surfaces of the guide column 14 as an operating surface.

The hook member 6 is rotatable around a rotation center (C6) between the locking position shown in FIG. 28A and the unlocking position shown in FIG. 28C, and is engaged at the upper end portion at the locking position. A locking hook portion 6a for locking to the stopping portion 5 is provided, and an interference protrusion portion 11 is provided at a position facing the locking hook portion 6a.

In this example, when the lift 4 rises from the state of FIG. 28D, the interference protrusion 11 of the hook member 6 first abuts on the locked portion 5, and then the hook member 6 is rotationally driven to the locked position. As shown in FIG. 28A, it is locked to the locked portion 5.

The lock member 9 is arranged adjacent to the hook member 6 and is rotatable around the center of rotation (C9) in the same plane as the operating surface of the hook member 6, and when the hook member 6 is in the locking position, the hook The hook-side protrusion 8 of the member 6 is locked to the lock-side protrusion 7 of the lock member 9.

Further, when the hook member 6 is in the locking position, the hook member 6 is generated with a rotational force in the unlocking direction due to the weight of the elevating table 4, whereas the hook contact portion 13 of the lock member 9 is hooked. The counterclockwise rotation of FIG. 28A is restricted by abutting on the hook side protrusion 8 of the member 6, and the lock side protrusion 7 is pressed by the hook side protrusion 8 to regulate the clockwise rotation. Therefore, it stays at the position shown in FIG. 28A, and as a result, the locking member 9 is held at the locking position.

When the lock member 9 is rotated in the clockwise direction in FIG. 28A, that is, toward the unlock position side from this state, the hook member 6 loses the support by the lock side protrusion 7 and moves in the unlock position direction as shown in FIG. 28B. It rotates to release the lock with the locked portion 5, and the elevating table 4 starts descending.

In order to smoothly unlock the hook member 6 by the lock member 9, the contact surface between the lock side protrusion 7 and the hook side protrusion 8 is an arc centered on the rotation center (C9) of the lock member 9. Formed by faces.

Further, since the hook member 6 and the lock member 9 are connected by the tension spring 12, the hook member 6 moves to the unlocked position as the lock member 9 is rotated to the unlocked position, and FIG. 28C As shown in the above, the hook side protrusion 8 is locked to the step portion 9a of the lock member 9 and stops.

In order to operate the lock member 9, as shown in FIG. 29, the pair of lock members 9 corresponding to the side walls of the guide columns 14 are connected by the operating rod 17 and at the center position of the operating rod 17. Is connected to the other end of the inner wire 15b of the wire device 15 whose one end is connected to the lock operation unit 10 (see FIGS. 30A and 30B).

The lift 4 so that the operating direction of the inner wire 15b, to be exact, the operating force acting direction of the inner wire 15b on the operating rod 17 is located in a plane parallel to the operating surfaces of the hook member 6 and the lock member 9. Is provided with a wire guide 49.

Further, a compression spring 50 is interposed between the outer cable 15a of the wire device 15 fixed to the wire guide 49 and the inner wire 15b connected to the working rod 17, and the working rod 17 is connected to the inner wire 15b. Gives a pulling force to the end side of the connection to. As a result, when the elevating table 4 rises from the lower floor surface 3 and returns to the standby position and the hook member 6 shifts to the locking position, the inner wire 15b is pulled and the lock operation unit 10 is in the initial state before operation. Return to.

The wire device 15 is operated by arranging the hook member 6 and the lock member 9 along the left and right side walls of the guide column 14 and connecting the wire device 15 at the center position of the operating rod 17 connecting the lock members 9. As shown in FIG. 27, the connecting end to the rod 17 substantially coincides with the center line in the width direction of the guide column 14.

As a result, the bending curvature of the wire device 15 drawn out from the wire lead-out opening 25e of the handrail 25 can be made larger than that shown in FIG. 5, so that the contact resistance during wire operation becomes smaller and the operating force becomes smaller. Can be transmitted smoothly.

Further, in this example, as shown in FIGS. 31 and 32, a lock operation member 51 is rotatably connected around the center of rotation (C51) to the front end of the handrail bracket 26 for rotatably connecting the handrail 25. Moving passages 26a are provided at opposite positions in the pair of wing pieces 52 facing each other of the handrail bracket 26, and both ends of the handrail lock body 28 pulled by the first tension spring 29 and the second tension spring 30 are movable. Will be inserted.

The first tension spring 29 and the second tension spring 30 are arranged so that the handrail lock body 28 is urged in the direction of the end position on the interference path 26g side of the moving passage 26a described later, and in this example, the second tension One end of the spring 30 is connected to the rotation center (C51) position of the lock operation member 51.

The movement passage 26a has an interference path 26g that interferes with the movement locus of the lower end of the handrail 25 (lock operation piece 25c) and a non-interference path 26b that does not interfere with the movement locus, and has an L-shape that is convex forward. , When the handrail 25 is in the upright position and the handrail lock body 28 is located in the interference path 26g, the falling motion of the handrail 25 from the standing position is restricted, and when the handrail 25 is located in the non-interference path 26b, the falling motion of the handrail 25 is allowed. Will be done. Further, as shown in FIG. 34A, a lock position is set near the end position on the interference path 26g side of the moving passage 26a, and a lock shelter position is set near the end position of the non-interference path 26b.

As shown in FIG. 31, the lock operation member 51 connects a pair of side pieces 51a along the inner wall surface of a pair of wing pieces 52 facing each other of the handrail bracket 26 by a connecting piece 51b, and has a width from each side piece 51a. It is formed by projecting the driven piece 51c toward the center of the direction. Each side piece 51a is provided with a first stopper side 53a, a second stopper side 53b, an operating side 53c, a pressing side 53d, and an intermediate side 53e connecting the operating side 53c and the pressing side 53d.

As shown in FIGS. 33A and 33B, the lock operating member 51 has an initial position where the first stopper side 53a is brought into contact with the operating member stopper wall 26i of the handrail bracket 26, and as shown in FIGS. 35A and 35B. 2 The stopper side 53b can be rotated between the operating position where the stopper side 53b is brought into contact with the operation member stopper wall 26i.

As shown in FIG. 33A, when the handrail 25 is pressed by the lid 21 and is in the prone position, the lock operation member 51 is driven to the initial position as the handrail 25 is changed to the prone position, as will be described later. To. In this state, the operation side 53c is subjected to a clockwise rotational force in FIG. 33A by the urging force applied to the handrail lock body 28, and as a result, the first stopper side 53a is pressed against the operation member stopper wall 26i, and the lock operation member The 51 is held in the initial position by preventing the occurrence of rattling and the like.

When the lid 21 is released from this state, the handrail 25 moves in a plane parallel to the left and right side walls of the guide column 14 due to the restoring force of the torsion spring 27, as shown in FIG. 33B, in the standing posture direction. Rotate to. The handrail 25 is shown in FIGS. 32 and 34A in order to push down the handrail lock body 28 by the lower end portion (lock operation piece 25c) of the handrail 25 as the handrail 25 rotates to open the rotation locus of the handrail 25. As described above, it is possible to shift to the upright posture in which the lower end of the handrail 25 is in contact with the handrail stopper 26j formed on the handrail bracket 26.

In the standing posture of the handrail 25, the handrail lock body 28 abuts on the front surface of the lock operation piece 25c of the handrail 25 and restricts the counterclockwise rotation of the handrail 25 in FIG. 34A, that is, the rotation in the lodging direction. Even if a force in the lodging direction is applied to the handrail 25, the handrail 25 does not fall.

From this state, as shown in FIG. 34B, when the lock operating member 51 is rotated from the initial position to the operating position side by pulling up the connecting piece 51b, the handrail lock body 28 is pushed down by the operating side 53c of the lock operating member 51. It moves from the interference path 26g into the non-interference path 26b. After that, when the lock operation member 51 is further rotated to the operating position where the second stopper side 53b abuts on the operation member stopper wall 26i, the handrail lock body 28 has the operation side 53c of the lock operation member 51 as shown in FIG. 35A. Then, it is pushed down by the pressing side 53d and moved to the lock relief position.

At the lock relief position, the handrail lock body 28 is in pressure contact with the pressing side 53d of the lock operating member 51, and the locking operating member 51 is rotated clockwise in FIG. 35A due to the component force in the direction orthogonal to the pressing side 53d at the pressing portion. A moment, that is, a rotational force that presses the second stopper side 53b against the operating member stopper wall 26i is generated, and the lock operating member 51 is maintained in the operating position and the handrail lock body 28 is maintained in the lock retaining position. ..

The handrail lock body 28 is allowed to move in the lodging direction while the handrail lock body 28 remains in the lock retaining position, and the handrail 25 rotates in the falling direction as the lid 21 is closed. As shown in FIG. 35B, when the handrail 25 rotates in the lodging direction, the lower end of the handrail 25 eventually comes into contact with the driven piece 51c, and when the handrail 25 falls further, the driven piece 51c is pushed by the lower end of the handrail 25 to perform a lock operation. The member 51 returns to the initial position.

The handrail lock body 28 moves to the lock position side following the return operation of the lock operation member 51, and the operation side 53c, the pressing side 53d, and the intermediate side 53e of the handrail lock body 28 set the movement timing of the handrail lock body 28. It functions as a cam for determining that interference with the handrail 25 does not occur.

The evacuation device disclosed in this disclosure can be used for evacuation of residents, etc. in the event of a fire in a building.

Claims

A lift that is driven up and down between the standby position held in the evacuation opening opened on the upper floor and the lower floor,
A rotatable hook member that locks the locked portion arranged on the periphery of the evacuation opening at the locked position and holds the elevating table in the standby position.
At the lock position, the lock side protrusion is locked to the hook side protrusion formed on the hook member to restrict the movement of the hook member to the unlocked position, and the ascending / descending portion is moved to the unlocked position. A lock member that allows the hook member to move to the unlocked position by the weight of the table and allows the lift table to descend.
A lock operation unit that rotates the lock member and
Evacuation device with.
The lock member is urged toward the lock position at the unlock position and is urged to the lock position side.
The lock member and the hook member block each other in the movement path in the lock position direction and the movement path in the lock position direction, and are held at the unlocked position and the unlocked position.
The evacuation device according to claim 1, wherein the hook member is provided with an interference protrusion that comes into contact with the locked portion and drives the hook member toward the locking position when the lift is raised.
The evacuation device according to claim 1 or 2, wherein the hook member and the lock member are connected by a tension member.
The rotation center of the lock member is arranged at a position where a rotational force is generated toward the lock position side due to a load applied from the hook side protrusion to the lock side protrusion.
The first, second or third aspect of the present invention, wherein the lock member is provided with a hook contact portion that abuts on the edge of the hook member on the unlocked position side and regulates rotation of the lock member beyond the lock position. Evacuation device.
The evacuation device according to any one of claims 1 to 4, wherein the lock-side protrusion and the hook-side protrusion are formed on concentric circles centered on the rotation center of the lock member.
A wire device whose one end is connected to the lock member and transmits the operating force of the lock operation unit to the lock member.
The evacuation device according to any one of claims 1 to 5, further comprising a wire guide that guides the operating force transmission direction of the wire device to the lock member in a plane parallel to the rotational operation surface of the lock member.
A pair of the lock members are arranged at positions where the rotational operation surface is parallel to the left and right side wall surfaces of the guide column that guides the lift, and sandwiches the left and right side walls of the guide column.
The evacuation device according to claim 6, wherein the wire device is connected to an operating rod that connects the lock members.
It has a wire device that transmits the operating force of the lock operation unit to the lock member arranged near the guide column.
The invention according to any one of claims 1 to 5, wherein a conversion unit that converts the operating direction of the wire device into the operating direction of the lock member in the unlocking direction is interposed between the wire device and the lock member. Evacuation device.
A pair of lock members that operate in a plane parallel to the front and rear wall surfaces of the guide column are arranged.
The conversion unit
An operating rod that connects the lock members and
An opening that is connected to the wire device with a rod locking portion that locks to the shaft portion of the operating rod and that rotates in a direction in which the rod locking portion moves toward the unlocked position side of the lock member during a wire tension operation. The evacuation device according to claim 8, which has a lever.
The lock members are arranged symmetrically on the elevating table.
The evacuation device according to any one of claims 6 to 9, wherein the lock operation unit is arranged in pairs on a handrail installed on the lift, and the lock operation unit is provided with a gear-shaped portion that meshes with each other. ..