CN113795308B

CN113795308B - Refuge device

Info

Publication number: CN113795308B
Application number: CN202080033643.XA
Authority: CN
Inventors: 城户宪昌; 藤谷哲也; 小野木涉; 浅川友纪
Original assignee: Nagar Industrial Co ltd
Current assignee: Nagar Industrial Co ltd
Priority date: 2019-05-08
Filing date: 2020-05-01
Publication date: 2023-05-05
Anticipated expiration: 2040-05-01
Also published as: CN113795308A; KR20210114329A; JP6855643B1; WO2020226142A1; JPWO2020226142A1; JP6855643B6; KR102417935B1

Abstract

The invention aims to provide an evacuation device which can enable wheelchair users to evacuate safely. The evacuation device comprises: a lifting table (4) which is lowered from a standby position held in a refuge opening (2) opened to an upper layer to a lower layer; a hinge plate (5) for blocking the wheel, which is arranged at the side edge of the riding-in side of the lifting platform (4) and is forced to the side of the standing position protruding from the surface of the lifting platform (4); and a hinge plate locking part (6) which is in a locking state when the lifting platform (4) is lifted, restricts the movement of the hinge plate (5) to the lodging position side, and releases the locking state at the lifting terminal position.

Description

Refuge device

Technical Field

The present invention relates to evacuation devices.

Background

As an evacuation device for elevating a lift between an upper floor and a lower floor, a device described in japanese unexamined patent publication No. 2010-51473 is known.

However, if the area of the lifting platform can be increased and the wheelchair user can take refuge, if the use method is wrong due to forgetting to lock the tire or the like, the wheelchair may roll off the lifting platform.

Disclosure of Invention

Problems to be solved by the invention

The present invention has been made to solve the above-described drawbacks, and an object of the present invention is to avoid danger and to improve safety, and to provide an evacuation device capable of safely evacuating a wheelchair user.

Means for solving the problems

According to the invention, the above object is achieved by providing a refuge device comprising: the vehicle is provided with a lifting table which is kept at a standby position in a refuge opening formed in an upper layer and descends to a lower layer, a hinge plate which is arranged at a riding-in side edge part of the lifting table and is forced to a standing position side protruding from the surface of the lifting table, and a hinge plate locking part which limits the movement of the hinge plate to a lodging position side and releases the locking state at a lifting terminal position when the lifting table is lifted.

In the present invention, a hinge plate that rotates between a standing position and a laying position is provided at a rear edge portion of the lift table, that is, at an entrance side edge portion of the lift table. The hinge plate is raised to a height of a wheel stopper of the wheelchair on the lifting platform at the raised position, and the raised state of the hinge plate is maintained when the hinge plate locking part is in the locked state.

The hinge plate locking part is in a locking state during the lifting of the lifting platform, and maintains the lifting posture of the hinge plate, so that the hinge plate locking part can be used as a wheel blocking member of a wheelchair on the lifting platform to prevent the wheelchair from rolling off the lifting platform.

When the wheelchair is moved so that the hinge plate can be moved to the reclined position, the hinge plate is pushed down by the wheels of the wheelchair, and the wheelchair can be moved up and down to the lifting platform.

As another aspect of the present invention, the following evacuation device may be configured: the hinge plate locking portion includes a locking control body rotatably coupled to the lifting table, and a hinge plate locking body rotatably coupled to the locking control body and the hinge plate, and the hinge plate locking body and the locking control body are engaged so as not to change an intersection angle with respect to a moving operation force of the hinge plate to the lodging position side in a locked state of the hinge plate locking portion.

In this aspect, the hinge plate locking portion includes a locking control body and a hinge plate locking body, and when the locking control body is located at the locking position, the hinge plate locking body is locked with the locking control body, and rotation of the hinge plate to the lodging position side is restricted.

In this case, the hinge plate locking body is coupled to the locking control body and the hinge plate pin, which are coupled to the lifting table, and the hinge plate locking body and the locking control body are locked in a locked state so that the intersection angle cannot be changed, whereby the evacuation device can be configured with a simple structure.

As another aspect of the present invention, the following evacuation device may be configured: the lock controller is biased toward a locked position where the hinge plate lock is locked with the hinge plate lock in a locked state of the hinge plate lock, the hinge plate lock is biased toward a locked position where the hinge plate lock is locked with the lock controller located at the locked position, and the lock controller or the hinge plate lock is rotationally driven in either one direction or the other of the locking/unlocking directions at the lifting terminal position of the lifting table by an unlocking operation unit disposed at the lifting terminal position to unlock the locked state of the hinge plate lock.

When the lifting platform reaches the lifting terminal position, either the locking control body or the hinge plate locking body is driven in a direction for releasing the mutually locked state, that is, in a direction for releasing the locking control body or the hinge plate locking body by a releasing operation part arranged at the lifting terminal position. Thus, the locking state of the hinge plate locking part is released, and the wheelchair can be lifted and lowered.

In addition, in the lifting from the lifting terminal position, the lock control body and the hinge plate lock body are urged to the locking position side and the locking position side, respectively, and thus, the state is shifted to the mutually locked state.

In addition, as another aspect of the present invention, the following evacuation device may be configured: the opening for evacuation is provided with a tilting body which is held in a position where a free end portion thereof rides on the lifting table when the lifting table is positioned at the standby position, and is transferred to the hanging posture by the lowering of the lifting table, and the tilting body is returned to the fixed position by the raising of the lifting table, and the tilting body is provided with a release operation portion which rotates the hinge plate locking body in the locking releasing direction with respect to the locking control body when the tilting body is returned to the fixed position.

In this aspect, the tilting body is erected between the upper floor and the lifting table when the lifting table is in the standby position, and the free end rides on the lifting table, so that the wheelchair can smoothly move on the tilting body even if there is a step or a gap between the upper floor and the lifting table.

In addition, the inclined body is in a hanging posture when the lifting platform descends, and the inclined body does not become an obstacle. Further, the tilting body that comes into contact with the lifting table as the lifting table moves to the standby position receives a rotational moment from the lifting table and automatically moves from the hanging posture to the fixed position, and the hinge plate locking body is rotated to the locking release position during the movement operation to release the locking state of the hinge plate locking portion, so that the movement of the hinge plate to the reclined posture can be performed later, and the wheelchair can be ridden and lowered.

In this case, if the evacuation device is configured such that the fixed roller is provided at the free end of the inclined body so as to abut against the lifting table that is raised in the suspended posture and generate a rotational moment to the fixed position side on the inclined body, the inclined body can be moved to the smooth fixed position in association with the raising of the lifting table, and the configuration becomes simpler than, for example, a case where the fixed roller is provided outside the rod-shaped body coaxial with the inclined body.

In addition, as another aspect of the present invention, the following evacuation device may be configured: the lock control body is provided with a detection protrusion which is in contact with the ground of the lower floor when the lifting platform is landed on the lower floor, and rotates the lock control body in a direction for releasing the locking of the hinge plate lock body.

In this aspect, the lock control body is provided with a detection protrusion, and when the lift table reaches the lower floor, the detection protrusion is brought into contact with the lower floor surface as the release operation portion, and the lock control body is driven in the direction of releasing the lock with the hinge plate lock body, thereby releasing the locked state.

Drawings

Fig. 1 is a view showing an evacuation device according to the present invention.

Fig. 2 is a view showing a state where the lid is opened.

Fig. 3a is a cross-sectional view showing a modification of the case.

Fig. 3B is an enlarged view of portion 3B of fig. 3 a.

Fig. 4 is a top view of the lift table.

Fig. 5 is an enlarged view of a portion 5A of fig. 4.

Fig. 6 is a perspective view showing a state in which a wheelchair is mounted on the elevating platform.

Fig. 7 is an enlarged view of a main portion of fig. 1.

Fig. 8 is a view showing a main portion of the armrest in a reclined position.

Fig. 9a is a diagram showing the operation of the armrest, and shows immediately after the start of the transition to the upright posture.

Fig. 9b is a diagram showing the operation of the armrest, and shows the state immediately before the completion of the operation of transferring to the standing posture.

Fig. 9c is a diagram showing the operation of the armrest, and shows the standing posture.

Fig. 9d is a diagram showing the operation of the armrest, and shows a temporary holding posture.

Fig. 10a is a diagram showing a modification of the armrest, and shows the armrest immediately after the start of the transition to the upright posture.

Fig. 10b is a diagram showing a modification of the armrest, and shows a temporary holding posture.

Fig. 10c is a diagram showing a modification of the armrest, and shows a standing posture.

Fig. 11 is a perspective view showing the lock operation portion.

Fig. 12a is a front view showing the lock operation portion.

Fig. 12b is a rear view showing the lock operation portion.

Fig. 13 is a view showing the inclined body in a fixed state.

Fig. 14 is a view showing the inclined body in the suspended state.

Fig. 15a is a side view of the hinge plate showing a locked state.

Fig. 15b is a link structure diagram of the hinge plate showing a locked state.

Fig. 16a is a view showing the operation of the hinge plate, showing a grounded state.

Fig. 16b is a view showing the operation of the hinge plate, and shows the state immediately before the lift table reaches the standby position.

Fig. 17a is a view showing a modification of the inclined body, and is a perspective view of the protrusion forming portion.

Fig. 17b is a view showing a fixed state of the tilting body of fig. 17 a.

Fig. 18a is a view showing the operation of the tilting body of fig. 17a, showing a suspended state.

Fig. 18b is a diagram showing the operation of the tilting body of fig. 17a, showing a state immediately before transition to the fixed state.

Fig. 19 is a perspective view showing the conversion unit.

Fig. 20a is a diagram showing the operation of the hook member, and shows the locked state.

Fig. 20b is a diagram showing the operation of the hook member, and shows immediately after the lock state is released.

Fig. 20c is a diagram showing the operation of the hook member, and shows immediately before the transition to the unlocked state.

Fig. 20d is a diagram showing the operation of the hook member, and shows the unlocked state.

Fig. 21 is a perspective view showing another embodiment of the elevating platform holding mechanism.

Fig. 22a is a diagram showing the operation of the hook member according to another embodiment, and shows a locked state.

Fig. 22b is a diagram showing the operation of the hook member according to the other embodiment, and shows the state immediately after the lock is released.

Fig. 23a is a view showing the operation of the hook member of fig. 22, and shows a state in which the hook auxiliary member collides with the engaged portion due to the lifting of the lifting table.

Fig. 23b is a view showing the operation of the hook member of fig. 22, and shows a state immediately before the lifting table is further lifted and the interference protrusion comes into contact with the engaged portion.

Fig. 24A is a diagram showing the operation of the conversion unit, and is a view in the direction 24A of fig. 19.

Fig. 24B is a diagram showing the operation of the conversion unit, and is a sectional view 24B-24B of fig. 24 a.

Fig. 25a is a diagram showing the operation of the conversion unit, and shows a state in which the open handle is rotationally driven.

Fig. 25b is a diagram showing the operation of the conversion unit, and shows a state in which the operation force to the lock operation unit is released.

Detailed Description

As shown in fig. 1 below, the evacuation device includes a housing 2a fitted and fixed to an opening formed in an upper floor 1 to form an evacuation opening 2, a cover 14 for closing the evacuation opening 2, a guide stay 15 erected on a lower floor 3 and fixed at an upper end to the evacuation opening 2, and a lift table 4.

As shown in fig. 1, the lifting table 4 is driven to move up and down between a standby position held in the evacuation opening 2 and an evacuation position where the lifting table moves down along the guide stay 15 from the standby position and lands on the lower floor 3.

The guide stay 15 is a hollow pipe body having an appropriate buckling strength, and is formed by extrusion molding of aluminum, for example. The guide stay 15 has a lower end fixed to the floor panel of the lower layer and an upper end fixed to the housing 2a.

Further, a tooth groove 15a is formed in one side wall surface of the guide post 15. As shown in fig. 1, the tooth grooves 15a are formed in a high-strength plate material such as stainless steel at predetermined intervals with recesses 15b formed along substantially the entire length of the guide post 15.

In this case, as shown in fig. 3, if the recess 2b is formed at the lower end of the peripheral edge of the housing 2a, the occurrence of collision sound between the lower cover and the lower edge of the housing 2a when the lift table 4 is lifted from the retracted position to the standby position can be prevented.

As shown in fig. 4 and 5, a weight 16 suspended by an off-drawing wire is accommodated in the hollow portion of the guide stay 15, and when the user gets down from the lift table 4 after the lift table 4 reaches the lower floor, the lift table 4 returns to the standby position by the weight of the weight 16.

As shown in fig. 6, the lift table 4 is formed to have a sufficient width and load resistance to enable the user of the wheelchair 13 to sit, and the wheelchair 13 can enter the wheelchair-mounted area 4a in the center from the rear edge portion on the left side in fig. 4 and 6. An auxiliary space 4b for assisting the occupant is formed obliquely rearward of the wheelchair-mounted area 4a.

In the present specification, the traveling direction (right side in fig. 4) of the wheelchair 13 is referred to as "front", the riding-in side is referred to as "rear", and the up-down direction is referred to as "side" in the drawing.

As shown in fig. 4 and 5, each side of the lift table 4 is provided with a column insertion opening 4c through which the guide column 15 is inserted, and a descent control device 17 for reducing the descent speed of the lift table 4 is mounted in the front-rear direction through the column insertion opening 4 c. A pinion gear 18 engaged with the concave portion 15b of the guide stay 15 is fixed to the rotation shaft (C17) of the descent control device 17, and the descent speed of the lift table 4 is reduced by decelerating the rotation number of the pinion gear 18 by the descent control device 17.

Further, rollers 19 are disposed on the lift table 4 so as to abut on the front-rear direction wall surface and the outer side wall surface of the guide stay 15, and regulate the shake and the like at the time of lifting.

Further, an armrest 20 is disposed at the front edge of the lift table 4. The armrest 20 is formed by bending a tube body, and has a cross bar 20a and a vertical bar 20b extending in a right angle direction from both ends of the cross bar 20a, and is formed in a U-shape. The armrests 20 are attached to the lift table 4 by rotatably coupling the free ends of the respective vertical bars 20b to an armrest bracket 21 fixed to the lift table 4.

The armrest 20 is rotatable between a reclined position along the surface of the lift table 4 shown in fig. 1 and an upright position in which the cross bar 20a is pulled upward shown in fig. 2. The armrest 20 is urged to the upright posture side, and is kept in the reclined posture by blocking the lid 14, and is automatically moved to the upright posture in accordance with the opening operation of the lid 14.

Fig. 7 and 8 show the armrest 20 in detail. As shown in fig. 8, each vertical rod 20b of the armrest 20 is coupled to the armrest bracket 21 at a position slightly above the lower end in order to function as a lock operation piece 20c at the lower end, and a force in the clockwise direction in fig. 8, which is the side of the standing posture, is applied by the torsion spring 22.

As shown in fig. 8, a long hole-shaped moving path 23 is formed in the armrest bracket 21 to connect a lock position, a lock release position, and a temporary holding position, which will be described later, and both ends of a rod-shaped armrest lock body 24 provided between the armrest brackets 21 are inserted into the moving path 23.

As shown in fig. 9c, the lock position is set at a position where the armrest lock body 24 blocks the movement path of the lock operation piece 20c to the lodging posture side when the armrest 20 is in the standing posture, and the unlock position where the armrest lock body 24 is located in fig. 9b is set at a position where the armrest lock body 24 does not interfere with the movement locus of the lock operation piece 20 c.

In fig. 9d, the temporary holding position where the armrest locking body 24 is located is extended rearward from the unlocking position, and is provided at a position where the terminal end of the noninterference path 23a that does not interfere with the movement locus of the lock operation piece 20C is brought again into the region that interferes with the movement locus of the lock operation piece 20C, and in this example, the notch-shaped recess 25 into which the armrest locking body 24 can be fitted is extended in the direction of the rotation center (C20) of the armrest 20.

In order to determine the position of the armrest locking body 24 in the movement path 23, a first tension spring 26 having one end fixed to the rotation center (C20) of the armrest 20 and a second tension spring 27 having one end fixed to the front end portion of the armrest bracket 21 are connected to the armrest locking body 24.

Therefore, in this example, when the cover 14 is opened, the armrest 20 moves from the reclined posture shown in fig. 8 to the upright posture side by the restoring force of the torsion spring 22. First, as shown in fig. 9a, the lock operation piece 20c interferes with the armrest lock body 24 held at the lock position with the shift to the upright posture, and as shown in fig. 9b, presses the armrest lock body 24 to the unlock position side with the shift to the upright posture side.

Then, when the armrest 20 is moved further toward the upright posture side, the armrest locking body 24 is returned to the locking position by the restoring forces of the first and second tension springs 26 and 27 as shown in fig. 9 c.

When the armrest 20 is in the upright posture, as shown in fig. 9, the armrest locking body 24 located at the locking position restricts the movement of the locking operation piece 20c in the direction of the lodging position by the wall surface 23b of the movement path 23, so that the armrest 20 does not lodge even if a force in the lodging direction is applied to the armrest 20.

As shown in fig. 9d, when the armrest lock body 24 is moved from this state beyond the unlock position to the temporary holding position, the armrest lock body 24 is pressed against the terminal wall of the temporary holding position by the first tension spring 26, and the movement in the lock position direction by the urging force of the second tension spring 27 is blocked by the restricting wall 25a formed by the wall surface of the recess 25, so that the armrest lock body does not come off from the temporary holding position.

As shown in fig. 4 and 5, since the center portion of the armrest locking body 24 is opened rearward of the lift table 4, the armrest locking body 24 is moved toward the end of the non-interference path 23a only by pushing the center portion of the armrest locking body 24 rearward, and thereafter, the armrest locking body 24 can be moved toward the temporary holding position by the restoring force of the first tension spring 26 when the pushing operation is completed.

When the armrest 20 is tilted from the state shown in fig. 9d, that is, the state in which the armrest 20 is in the raised position and the armrest lock body 24 is in the temporary holding position, the armrest lock body 24 is pushed out from the temporary holding position to the non-interference path 23a by the lock operation piece 20c, and then is pulled back to the lock position by the restoring force of the second tension spring 27.

Therefore, in this example, after the evacuation device is used, the armrest locking body 24 is moved to the temporary holding position in a state where the elevating platform 4 is returned to the standby position, and then the armrest 2 can be moved to the reclined position only by the blocking cover 14.

In this example, one end of the torsion spring 22 penetrates the armrest bracket 21 and is inserted into the lift table 4 toward the mounting piece 21a of the lift table 4 as shown in fig. 8, but may be locked to the rear folded piece 21b of the armrest bracket 21 as shown in fig. 10.

In the following examples, components substantially identical to those in the above-described embodiments are denoted by the same reference numerals in the drawings, and description thereof is omitted.

The above-described armrest 20 is provided with a lock operation portion 29 for operating a lock member 28 described later. The lock operation portion 29 is provided in the center portion of the cross bar 20a of the armrest 20, and is provided in a pair at symmetrical positions with respect to the center position of the cross bar 20a so that any one of the upper limbs of the helped person who sits on the wheelchair 13, which is not free, can be operated, or so that the helped person can operate over the shoulder of the helped person even when riding in any auxiliary space 4 b.

Even if any one of the locking operation portions 29 is operated, a pair of locking operation portions 29 are formed with gear-like portions 29a that mesh with each other so that an inner wire 30b described later can be operated in synchronization.

As shown in fig. 6 and 11, the lock operation portions 29 are disposed so that the helped person can operate by merely mounting his or her arms on the lock operation portions 29 and receiving his or her weight, or so that the helped person can operate by merely pressing his or her arms over their shoulders, and so that the lock release operation of the lock member 28 is performed by pressing the helped person in a rod-like manner and downward direction.

The operation of the locking member 28 by these locking operation portions 29 is performed by using a wire device 30 in which an inner wire 30b is inserted into an outer cable 30a so as to be movable, and as shown in fig. 11 and 12, the inner wire 30b is connected to each of the locking operation portions 29 rotatable about a rotation center (C29).

In order to use the wire device 30 as a stretching style, the inner wire 30b is inserted into the lock operation portion 29 on the opposite side of the lock operation portion 29 to be connected. As shown in fig. 11, the wire device 30 connected to the lock operation portion 29 is pulled into the inner space of the armrest 20 from the wire introduction opening 20d provided in the tubular armrest 20, and then pulled out of the armrest 20 again from the wire discharge opening 20e as shown in fig. 5, and is wired along the vertical rod 20b of the armrest 20 at an appropriate height on the surface of the elevating platform 4 and connected to a conversion portion 31 described later.

The hinge plate 5 is coupled to the rear end portion of the wheelchair-carrying area 4a of the lift table 4 so as to be rotatable in the up-down direction about the rotation axis (C5), and an inclined surface 4d for absorbing a step difference with the lower floor surface 3 is formed behind the hinge plate in a state where the lift table 4 is landed on the lower floor surface 3.

As will be described later, the hinge plate 5 is formed so as to land on the lower floor 3 and unlock the lower floor 3 and allow downward rotation, and when the wheelchair 13 is retracted after landing on the lower floor 3, the hinge plate 5 rotates so as to be pushed down and the free end portion rides on the inclined surface 4d, and in this state, the lower floor 3 can be entered.

In order to facilitate the mounting of the wheelchair 13 in the upper standby position, the inclined body 11 is connected to the evacuation opening 2.

As shown in fig. 6, the tilting body 11 is a plate body having a width dimension to such an extent that the wheelchair 13 can pass through, and rotates about the rotation center (C11) between a fixed position where the free end portion shown in fig. 13 rides on the lifting table 4 and a hanging posture in a state of being hung from the evacuation opening 2 shown in fig. 14.

A fixed roller 12 and a support roller 11a are connected to the free end of the inclined body 11. As shown in fig. 13, in the fixed position, the support roller 11a rides on the inclined surface 4d and bears the load of the wheelchair 13 passing over the inclined body 11.

As shown in fig. 13, when the lift table 4 is in the standby position, the hinge plate 5 is in a state of riding on the free end of the tilting body 11, and in this state, the tilting body 11 is placed between the upper floor surface 1 and the surface of the lift table 4, thereby eliminating the step difference between the upper floor surface 1 and the surface of the lift table 4.

When the lifting table 4 is lowered in this state, as shown in fig. 14, the inclined body 11, which is not supported by the inclined surface 4d, is rotated downward by its own weight and is shifted to the hanging posture.

The fixed roller 12 is disposed so that a rotational operation force in a fixed installation direction, i.e., counterclockwise in fig. 14, is generated on the inclined body 11 when the inclined body 11 is in the hanging posture and is in contact with the upper surface of the inner end portion of the auxiliary space 4b of the ascending lift table 4.

Therefore, in this example, when the lift table 4 is lowered and then moved to the standby position again, the fixed roller 12 first comes into contact with the upper surface of the inner end portion of the auxiliary space 4b of the lift table 4, and the inclined body 11 is raised together with the lift table 4 and returned to the fixed position, and the initial state shown in fig. 13 is restored.

In order to absorb the impact when the lifting table 4 collides with the fixed roller 12, a damper 32 is mounted between the evacuation opening 2 and the rear surface of the tilting body 11.

As described above, the hinge plate 5 is rotatably coupled to the rear end portion of the wheelchair mounting area 4a of the lift table 4 in the up-down direction, rotates between the standing posture shown in fig. 14 and the reclined posture in which the free end rides on the inclined surface 4d, and is biased to the standing posture side by the torsion spring 33 wound around the rotation shaft (C5). The angle of the hinge plate 5 in the standing posture is determined so as to function as a wheel stopper of the wheelchair 13 on the lift table 4 in consideration of the longitudinal dimension of the hinge plate 5 in the front-rear direction.

The hinge plate 5 is kept in the raised posture by the hinge plate locking portion 6, and is locked and kept in the raised posture when the lifting table 4 is lifted, that is, when the lifting table 4 is lifted up and down, that is, when the lifting table 4 is lifted down, that is, when the lifting table is lifted up and down, that is, when the lifting table 4 is lifted up, that is, when the lifting table is lifted down, on the ground surface 3, and is allowed to move to the side of the lodging posture.

As a result, the wheelchair 13 is prevented from rolling off the lift table 4 while the lift table 4 is being lowered by maintaining the raised posture of the hinge plate 5, and movement to the reclined posture is allowed without interfering with the passage of the wheelchair 13 at the lift end position of the lift table 4, that is, at the standby position and the landing on the lower floor 3.

As shown in fig. 15, the hinge plate locking portion 6 includes a lock control body 7 rotatably coupled to the lift table 4 and a hinge plate locking body 8 rotatably coupled to the free end portion of the hinge plate 5 and the lock control body 7, and

lock stoppers

7a and 8a that are engaged with each other in a locked state are formed on each of them.

The lock control body 7 is rotatable about a rotation center (C7) between a lock position and a lock release position, and the hinge plate lock portion 6 is brought into a locked state by the hinge plate lock body 8 being moved to a lock limiter 7a which engages the lock limiter 8a with the lock control body 7 located at the lock position.

Further, a torsion spring 34 is wound around a rotation shaft (C8M) connecting the lock control body 7 and the hinge plate lock body 8, and as a result, the hinge plate lock body 8 rotatably connected to the hinge plate 5 about the rotation center (C8) is urged to the locking position side by the urging force of the torsion spring 33, and the urging force of the torsion spring 34, which is attached between the lock control body 7 and the hinge plate lock body 8, is urged to the locking position side.

As shown in fig. 15a, the connection position of the hinge plate lock body 8 and the lock control body 7, the connection position of the lock control body 7 to the lifting table 4, and the locking positions of the

lock stoppers

7a, 8a in the locked state are set so as to change the intersection angle between the hinge plate lock body 8 and the lock control body 7 when the movement operation force of the hinge plate 5 in the lodging direction is restricted by the locking of the

lock stoppers

7a, 8a to each other, at the connection point (C8) with the hinge plate lock body 8.

That is, in fig. 15b, when a rotational operation force in the tilting direction is applied to the hinge plate 5, the force (F) acts on the joint point between the hinge plate lock body 8 and the hinge plate 5, and a counterclockwise rotational force is generated in the lock control body 7. The locking positions of the

locking stoppers

7a and 8a are set to positions that restrict a decrease in the intersection angle (θ) between the locking control body 7 and the hinge plate locking body 8 due to the counterclockwise rotation of the locking control body 7, and as a result, the load in the lodging direction of the locking control body 7 and the hinge plate locking body 8 with respect to the hinge plate 5 acts substantially as a single body.

By integrating the lock control body 7 and the hinge plate lock body 8, the hinge plate 5, the integrated body of the lock control body 7 and the hinge plate lock body 8, and the lifting table 4 constitute a three-joint link, and the hinge plate 5 can maintain the standing posture without any degree of freedom in movement.

The lock control body 7 is provided with a detection protrusion 10 extending downward from a connection point to the lift table 4, and the lock control body 7 is rotated counterclockwise (unlocking direction) in fig. 15a when the lift table 4 is landed on the lower floor 3.

Therefore, in this example, when the lifting table 4 is lowered and landed on the lower floor 3 functioning as the release operation portion, the detection protrusion 10 is pressed against the lower floor 3 and rotated clockwise in fig. 15a, that is, in the unlocking direction. When the lock control body 7 is rotated to the unlocking position, as shown in fig. 16a, the locking of the

lock stoppers

7a, 8a of the hinge plate lock body 8 is released, and the constraint of the joint (C8M) between the lock control body 7 and the hinge plate lock body 8 is released, so that the hinge plate lock body 8 can be rotated and the hinge plate 5 can be moved in the reclining direction.

When the wheelchair 13 moves in this state, the hinge plate 5 is pushed in the arrow direction in fig. 16a by the wheels, and the free end is brought into a state of riding on the inclined surface 4d, so that the wheelchair 13 can be driven off.

On the other hand, when the lifting table 4 is lifted up and reaches the vicinity of the standby position, the tilting body 11 is shifted from the lifted-down posture to the fixed position as described above.

As shown in fig. 13, a release operation portion 9 for moving the hinge plate lock body 8 in the lock release direction with respect to the lock control body 7 when moving to the fixed position is provided at the free end portion of the tilting body 11. In this example, the release operation portion 9 is formed in a protruding shape that presses the arcuate pressed edge 8b formed in the hinge plate lock body 8.

As shown in fig. 16b, as the lifting table 4 approaches the standby position, the release operation portion 9 approaches the pressed edge 8b of the hinge plate lock body 8, and the pressed edge 8b is pushed forward by the release operation portion 9.

The lock stopper 8a of the hinge plate lock body 8, which is pressed forward by the pressing edge 8b, is released from the lock stopper 7a of the lock control body 7 by the release operation part 9, and the lock control body 7 is driven in the unlock position direction, and the hinge plate 5 is driven in the lodging position direction.

The pressed edge 8b of the hinge plate locking body 8 is set so that the free end of the hinge plate 5 rides on the tilting body 11 after being returned to the fixed position of the tilting body 11, and in this state, the rotation drive with respect to the hinge plate locking body 8 is stopped, and as described above, the wheelchair 13 can smoothly ride on the floor 1 on the upper floor side via the tilting body 11 and the hinge plate 5 in the state where the lift table 4 is returned to the standby position.

Fig. 17 and 18 show modifications of the inclined body 11. In the present modification, the tilting body 11 is composed of a tilting body 45 having a fixed roller connected to the tip end thereof, and a protrusion forming portion 46 fixed to the tip end of the hinge plate body 45. As shown in fig. 17a, the protrusion forming portion 46 is formed by rotatably connecting a roller-shaped release operation portion 9 to the tip of a housing 46a to which the support roller 11a is connected. Both ends of the release operation portion 9 are inserted through long holes 46b formed in the housing 46a, are prevented from coming off by nuts or the like, and are urged forward by torsion springs 46 c.

Therefore, in the present modification, when the lifter plate 4 is located at the standby position, the roller-shaped release operation portion 9 is in contact with the pressed edge 8b of the hinge plate lock body 8, as in the above embodiment.

When the lift table 4 is lifted from the hanging posture shown in fig. 18a, the relative position between the lift table 4 and the tilting body 11 may deviate from the set value due to the accumulation of the dimensional error, and there is a case where the operation force from the release operation portion 9 to the pressed edge 8b may become shorter, for example, in the direction of the rotation center (C8) of the hinge plate locking body 8 or the length (arm) of the vertical line that is sagging from the rotation center (C8) on the line of the direction of the operation force, and in this case, a sufficient rotation operation force may not be applied to the hinge plate locking body 8, and therefore, there is a possibility that a smooth operation may be hindered.

However, as in the present modification, if the release operation portion 9 is allowed to move freely in the long hole 46b, even in the above-described case, the release operation portion 9 moves rearward along the long hole 46b, and the contact angle with the pressed edge 8b changes, so that the arm of force becomes large, and smooth operation can be ensured.

The lift table 4 configured as described above is held at the standby position by the lift table holding mechanism 35.

As shown in fig. 19, the elevating platform holding mechanism 35 includes a locked portion 36 formed around the standby position, a hook member 37 that is engaged with and disengaged from the locked portion 36, and a locking member 28 that controls the engaged and disengaged state of the hook member 37.

In this example, the engaged portion 36 is formed of a U-bolt, and a total of four guide posts 15 (see fig. 4) are fixed to the front and rear wall surfaces of a pair of guide posts 15 disposed at laterally symmetrical positions. The hook members 37 and the lock members 28 are disposed on the elevating platform 4 in correspondence with the engaged portions 36, and the two pairs of the hook members 37 and the lock members 28 in total of four pairs are operated on the guide posts 15 in an operation plane parallel to the front and rear wall surfaces of the guide posts 15.

The hook member 37 is rotatable about a rotation center (C37) between a locking position shown in fig. 20a and a locking release position shown in fig. 20d, and has a locking hook 37a at an upper end portion thereof, which is locked with the locked portion 36 at the locking position, and an interference protrusion 37b at an opposite position of the locking hook 37 a.

As shown in fig. 20d, the interference protrusion 37b is disposed on a relative movement path of the engaged portion 36 when the hook member 37 is located at the engagement release position, that is, a relative movement path of the engaged portion 36 when the lifting table 4 is lifted.

Therefore, in this example, when the lift table 4 is lifted from the state of fig. 20d, first, the engaged portion 36 collides with the interference protrusion 37b of the hook member 37, and the hook member 37 is rotationally driven to the engaged position. By rotating the hook member 37 to the locking position, as shown in fig. 20a, the hook portion is positioned above the locked portion 36 and locked with the locked portion 36.

Further, a hook-side protrusion 37c is provided to protrude from the edge of the hook 37 at the engagement release position. The engagement surface between the hook-side projection 37C and a locking-side projection 28C described later is formed by an arc surface centered on the rotation center (C28) of the locking member 28.

In the locked state with the locked portion 36, a rotational force in the locking releasing direction is generated in the hook member 37 due to the weight of the lifting table 4, and the locking member 28 is disposed so as to maintain the locked state against the rotational force.

The lock member 28 is disposed adjacent to the engagement release side edge of the hook member 37, and is rotatable between a lock position shown in fig. 20a, in which the lock side protrusion 28c protruding from the side edge of the hook member 37 is engaged with the hook side protrusion 37c of the hook member 37, and a unlock position shown in fig. 20 d. The lock member 28 and the hook member 37 are connected by a tension spring 38, and the tension spring 38 urges the lock member 28 toward the lock position when the hook member 37 is positioned at the lock position.

When a rotational force in the direction of the lock release position (clockwise in fig. 20 a) is generated in the hook member 37 in a state where the lock side protrusion 28C is locked with the hook side protrusion 37C, a compressive force toward the rotation center (C28) is generated in the lock member 28, and the hook contact portion 28a formed at the side edge of the hook member 37 contacts the hook member 37.

The contact position of the hook contact portion 28a to the hook member 37 is set above the rotation center (C28) of the lock member 28 in this example, which is a region where the lock member 28 approaches when the hook member 37 moves to the lock release position.

Therefore, in this example, even if a rotational force in the direction of the locking release position is generated in the hook member 37 due to the load of the lifter 4, the pressing force between the locking side protrusion 28c and the edge of the corresponding hook member 37 increases, and the hook member 37 does not rotate, and the locked state, that is, the holding state of the lifter 4 to the standby position is maintained.

When the lock member 28 is rotated from this state to the unlock position, the lock-side protrusion 28c moves on the arc surface of the hook-side protrusion 37c to release the engagement with the hook-side protrusion 37c, and the lifting platform 4 starts to descend. As shown in fig. 20b and 20c, the engagement between the hook member 37 and the engaged portion 36 is released, and the hook member 37 is pulled further toward the engagement release position side by the tension spring 38 in a state where the lock member 28 is held at the lock release position, and the hook side protrusion 37c of the hook member 37 is engaged with the step portion 28b of the lock member 28.

This state is a lock release state, and when the hook member 37 is engaged with the step portion 28b, the movement path of the lock member 28 to the lock position side is blocked by the hook member 37, and thus the lock release state is maintained.

As described above, when the lifting table 4 is lifted and the hook member 37 is engaged with the engaged portion 36, the lock member 28 is moved to the lock position by the tension spring 38, and thereafter, the locked state is maintained.

Fig. 21 to 23 show a modification of the elevating platform holding mechanism 35. In fig. 21 to 23, components substantially identical to those of the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted.

In the present modification, the tooth grooves 15a are formed on the front and rear wall surfaces of the guide stay 15, and the pinion gear 18 of the descent control device 17 is engaged with the tooth grooves 15a formed on the front wall surface shown by the arrow in fig. 21. In this way, since the tooth grooves 15a are arranged on the front and rear wall surfaces of the guide strut 15, that is, on the short side portions, the short side portions have higher rigidity than the long side portions, and the deflection is small, the meshing accuracy with the pinion gear 18 is high, smooth operation is possible, and the strength of the whole can be improved.

In fig. 21, 16a represents a wire for suspending the

weight

16, and 16b represents a pulley.

The elevating platform holding mechanism 35 operates in a plane parallel to the wall surface adjacent to the wall surface of the guide post 15 where the tooth grooves 15a are formed, and can be engaged with and disengaged from the engaged portion 36.

As shown in fig. 22, the elevating platform holding mechanism 35 of the present modification is provided with a hook auxiliary member 47 in addition to the hook member 37, the lock member 28, and the tension spring 38 described above. The hook member 37 and the lock member 38 are provided with the hook-side protrusion 37C and the lock-side protrusion 28C and are rotatably coupled to the lift table 4 about the rotation center (C37, C28) in the same manner as in the above embodiment, and the lock members 28 are coupled to each other by the operation rod 39.

The hook auxiliary member 47 and the hook member 37 are rotatable relative to the hook member 37 coaxially, and have a hook-shaped contact projection 47a capable of contacting the engaged portion 36 at a rear end portion thereof, an operation wall 47b at a front end portion thereof, and an escape slot 47c at an intermediate portion thereof.

The escape long hole 47C is formed in a circular arc shape centering on the rotation center (C37) of the hook member 37, and has a curvature through which the rotation shaft forming the rotation center (C28) of the lock member 28 can be inserted.

The operation wall 47b is located above the operation protrusion 28d protruding from the lock member 28, and is formed at a position where it can abut against the operation protrusion 28 d.

As shown in fig. 22a, when the hook member 37 is in the engaged state, the contact projection 47a of the hook auxiliary member 47 is located slightly above the engaged portion 36. When the engagement of the hook member 37 with the engaged portion 36 is released and the lifting table 4 starts to descend, the abutment projection 47a of the hook auxiliary member 47 abuts against the engaged portion 36, and as shown in fig. 22b, the rotation shaft of the lock member 28 moves relatively in the escape slot 47c, and the hook auxiliary member 47 rotates clockwise.

As the hook auxiliary member 47 rotates, the operation wall 47b presses the operation protrusion 28d of the lock member 28, and therefore, the lock member 28 is rotationally driven to the end-of-travel position on the lock release side.

Further, when the hook member 37 and the hook auxiliary member 47 are biased counterclockwise by the torsion spring, the lifting table 4 is lowered by releasing the engagement of the hook member 37, and the initial posture of fig. 22a is restored.

On the other hand, when the lift table 4 is lifted, as shown in fig. 23a, first, the abutment projection 47a of the hook auxiliary member 47 abuts against the engaged portion 36 and rotates clockwise. As the hook auxiliary member 47 rotates, the locking member 28 presses the operation protrusion 28d downward by the operation wall 47b of the hook auxiliary member 47, and rotates toward the lock release position as shown in fig. 23b, the interference protrusion 37b of the hook member 37 abuts against the engaged portion 36, and then the hook member 37 moves toward the lock position by the force applied to the interference protrusion 37 b.

As described above, in the present modification, when the lift table 4 is lifted up and moved to the standby position, the hook member 37 does not collide with the engaged portion 36, and therefore damage to the hook member 37 can be reliably prevented.

As described above, the operation of the lock member 28 is performed by the conversion unit 31 connected to the lock operation unit 29 provided in the armrest 20.

As shown in fig. 19, the conversion unit 31 includes an operating lever 39 and an open handle 40 that are connected between a pair of locking members 28 disposed opposite to each other and are disposed along the tooth space 15a of the guide post 15 to form a wall surface. A collar 41 is attached to a central portion of the operating rod 39 in the longitudinal direction, the collar 41 is formed in a tubular shape through which the operating rod 39 is inserted so as to be movable, and flanges 41a are formed at both ends.

As shown in fig. 19 and 25, the open handle 40 includes an attachment piece 40a and a rising piece 40b formed by bending a plate material into an L-shape, and is rotatably coupled to a handle bracket 42 fixed to the lifting table 4 in the attachment piece 40 a.

The open handle 40 is disposed in a posture in which the rising piece 40b is orthogonal to the operating rod 39, and as shown in fig. 24b, a long hole-shaped rod locking portion 43 having an arc-shaped locking end 43a which is in contact with the outer periphery of the collar 41 at approximately half the circumference is formed in the rising piece 40 b. The rod locking portion 43 has a lower opening 43b formed at an opposite end to the locking end 43a for providing an entrance for inserting the ferrule when attached to the ferrule 41.

As shown in fig. 24a, the rotation center (C40) of the open handle 40 is disposed slightly closer to the center of the lifting table 4 from the operation rod 39, and the inner wire 30b of the wire device 30 is connected to the opposite side across the rotation center.

The wire device 30 is wired in parallel to the vertical rod 20b of the armrest 20, that is, the operation rod body 39, along the surface of the elevating table 4 at an appropriate height on the elevating table 4, and when the lock operation portion 29 of the armrest 20 is operated, the inner wire 30b is pulled in the direction of the lock operation portion 29, and as shown in fig. 25a, the open handle 40 is rotated about the rotation axis (C40). With the rotation of the open handle 40, the locking end 43a of the rod locking portion 43 moves forward, and the collar 41 and the operating rod 39 inserted into the collar 41 are pushed by the locking end 43a to move from the initial position in the center direction of the lifting table 4 by a predetermined distance (δ).

The movement distance (δ) corresponds to the movement stroke from the lock position of the lock member 28 to the unlock position, and as a result, the lock member 28 moves to the unlock position, the engaged state of the hook member 37 to the engaged portion 36 is released, and the lifting table 4 starts to descend.

When the flange 41a of the collar 41 is urged toward the initial position by the compression spring 44 and the operation force to the lock operation portion 29 is released after the release operation of the lock member 28, the restoring force of the compression spring 44 generates an operation force in the initial position direction on the collar 41.

Since the linear portion 43c (see fig. 24 b) of the lever locking portion 43 continuous with the locking end 43a is slightly inclined by adding the component in the vertical direction at the time of the operation of the locking member 28, the handle bracket 42 is inclined, and the loop 41 is returned to the initial position by the linear portion 43c of the lever locking portion 43, and the open handle 40 is returned to the initial position (see fig. 25 b). By resetting the open handle 40 to the initial position, the inner wire 30b of the wire device 30 is also driven to the initial state side, and the lock operation portion 29 is also reset to the initial state.

Thereafter, when the locking operation to the locked portion 36 is performed by the hook member 37, the lock member 28 moves to the lock position side as described above, and the operation lever 39 moves accordingly, and the conversion portion 31 returns to the initial state shown in fig. 19.

Claims

1. A refuge device is characterized in that,

the device comprises:

a lifting platform which is lowered from a standby position kept in a refuge opening arranged on an upper layer to a lower layer;

a hinge plate for blocking the wheel, which is arranged at the edge part of the riding side of the lifting platform and is forced to the side of the standing position protruding from the surface of the lifting platform; and

a hinge plate locking part which is in a locking state when the lifting platform is lifted, restricts the hinge plate to move to the lodging position side, releases the locking state at the lifting terminal position,

an inclined body is provided in the evacuation opening, and is held in a fixed position where a free end portion rides on the elevating table when the elevating table is in the standby position,

the inclined body is transferred to the hanging posture by the descending of the lifting platform, and is restored to the fixed position by the ascending lifting platform,

the tilting body releases the locking state of the hinge plate locking part when the tilting body returns to the fixed position.

2. The refuge device of claim 1, wherein the means for maintaining the refuge chamber comprises,

the hinge plate locking portion includes:

a lock control body rotatably connected to the lifting table; and

A hinge plate locking body rotatably connected to the locking control body and the hinge plate,

the hinge plate locking body and the locking control body are locked so that the intersection angle cannot be changed with respect to the movement operation force of the hinge plate to the lodging position side in the locked state of the hinge plate locking portion.

3. The refuge device of claim 2, wherein the means for maintaining the vehicle comprises,

in the locked state of the hinge plate locking portion, the locking control body is biased toward the locked position where the hinge plate locking body is locked,

the hinge plate locking body is forced to the locking position side locked with the locking control body at the locking position,

at the lifting terminal position of the lifting platform, the locking control body and the hinge plate locking body are driven to rotate in any direction and the other locking and unlocking direction by a releasing operation part arranged at the lifting terminal position, so as to release the locking state of the hinge plate locking part,

the tilting body is provided with the release operation part for rotating the hinge plate locking body in the locking release direction of the locking control body when the tilting body is restored to the fixed position.

4. A refuge apparatus according to claim 2 or 3, wherein,

the lock control body is provided with a detection protrusion which is brought into contact with the ground of the lower floor when the lifting table is lowered to the lower floor, and rotates the lock control body in a direction to release the locking with the hinge plate lock body.

5. A refuge apparatus according to any one of claims 1 to 3, wherein,

the free end of the inclined body is provided with a fixed roller which is in contact with the lifting platform in the lifting state and generates a rotation moment to the fixed position side of the inclined body.

6. A refuge device is characterized in that,

the device comprises:

the hinge plate locking portion includes:

a lock control body rotatably connected to the lifting table; and

the hinge plate locking body and the locking control body are locked in such a manner that the intersection angle cannot be changed with respect to the moving operation force of the hinge plate to the lodging position side in the locked state of the hinge plate locking portion,

the hinge plate locking body is driven to rotate in a locking and unlocking direction with the locking control body by a releasing operation part of a lifting terminal position arranged at the standby position side of the lifting table, so as to release the locking state of the hinge plate locking part,

at the lifting terminal position of the lower floor side of the lifting platform, the locking control body is driven to rotate in the locking and unlocking direction with the hinge plate locking body by using the lower floor surface as the unlocking operation part, and the locking state of the hinge plate locking part is unlocked.