JP6868511B2 - Evacuation device - Google Patents

Description

The present invention relates to an evacuation device.

As an evacuation device that lowers the lift from the upper floor to the lower floor, the one described in Patent Document 1 is known.

In this conventional example, the evacuation device is formed so as to be movablely arranged between the standby position in the opening provided on the floor on the upper floor side and the lower floor.

Japanese Unexamined Patent Publication No. 2010-51473

However, in the above-mentioned conventional example, in the state where the elevating table is held on the upper floor, there is a step between the floor surface of the upper floor and the surface of the elevating table, so that the user with a disability, In particular, there is a problem that it is not suitable for use in wheelchairs.

The present invention has been made to eliminate the above drawbacks, and an object of the present invention is to provide an evacuation device that can be used by a person with a disability.

According to the present invention, the above object is
A lift that is driven up and down between the standby position held in the evacuation opening on the floor on the upper floor and the floor on the lower floor,
It is rotatably connected to the upper end of the side wall surface of the evacuation opening, and the free end rides on the elevator in the standby position and rises from the set position passed between the upper surface of the evacuation opening and the elevator. A slope member that rotates in a suspended position and is suspended in the evacuation opening as the vehicle descends.
This is achieved by providing an evacuation device having a slope control body that moves the slope member from the suspended posture to the set position when moving the lift to the standby position.

In the present invention, the slope member is rotatably connected to the side wall surface of the evacuation opening provided on the floor on the upper floor side, and the free end of the slope member is the elevating table when the elevating table is in the standby position. It rides on top and absorbs the step formed between the floor surface on the upper floor side and the lift.

In the present invention, when the lift is in the standby position, the slope member absorbs the step between the floor surface on the upper floor and the lift, and the use of a lame user, a wheelchair, or a stretcher. Even a person can evacuate with an evacuation device.

In addition, since the slope member shifts to a posture of being suspended along the side wall surface of the evacuation opening when the elevating platform descends, interference during descent of the evacuation platform is reliably prevented and it is safe. The descent becomes possible.

Further, since the slope member is moved from the suspended posture to the set position by the slope control body operated by the ascending movement of the elevating table, the elevating table when the elevating table is raised and the slope member in the suspended position are used. It becomes possible to prevent the direct contact of. As a result, an impact sound is generated when the slope control body returns to the standby position by forming the contact portion with the lift table with a cushioning material or by incorporating a cushioning mechanism in the slope control body. Can be prevented.

The slope controller shall adopt an appropriate mechanism as long as it abuts on the elevator that rises to the standby position and then converts the driving force given by the ascending motion of the elevator into the rotational motion of the slope member. Is possible, but
When the slope control body is fixed to the rotation axis of the slope member and the free end portion interferes with the elevating platform that rises toward the standby position and rotates to drive the slope member to the set position, the evacuation device is configured. The structure becomes simple.

In addition, as another configuration for achieving the above objectives,
The elevating platform is formed with recesses on which the wheels of a wheelchair or stretcher are placed from the front side edge to the back side edge, which is the entrance to the elevating table.
The tip of the slope member at the set position can form an evacuation device located in the recess of the elevating platform at the standby position.

The recess may be relatively narrow, corresponding to each of the left and right wheels, or large, corresponding to both left and right wheels, as long as the wheels of a wheelchair or stretcher can be placed on it. Good.

In this case, an inclined surface that gradually becomes lower in height is formed in the recess as it goes from the start end to the front side edge that serves as the entrance to the elevator.
The slope member can form an evacuation device in which the free end extends beyond the start end of the inclined surface at the set position.

In the evacuation device provided with the recess, the wheelchair gets on the elevator from the boarding / alighting end, and when it reaches the lower floor, the wheelchair is retracted from the boarding / alighting end and descends to the floor of the lower floor. In addition to the original function of guiding the wheels of the wheelchair, the recess has the effect of lowering the height from the lower floor surface to the wheels when the lift platform lands on the lower floor surface.

As a result, when forming an inclined surface at the getting on / off end in order to eliminate the step between the lower floor surface and the getting on / off end of the wheel guide, the inclination angle can be made gentle even if the length of the inclined surface is short. Therefore, it is possible to smoothly get off the wheelchair on the lower floor.

In addition, the step between the floor surface on the upper floor and the floor surface on the upper floor, which is increased by forming the recess, is eliminated by the guide piece of the slope member whose free end extends beyond the start end of the inclined surface. It does not interfere with boarding.

Therefore, in the present invention, since a slope for eliminating a step having a gentle slope is provided for both getting on and off the wheelchair, it becomes easy to use the wheelchair.

It is a top view which shows the evacuation device of this invention. It is a figure which shows the operation of the evacuation device, and is the side view which shows the state which the lift table is in a standby position. It is a figure which shows the operation of the evacuation device, and is the side view which shows the state which the elevating table has reached the floor surface of the lower floor. It is a perspective view which shows the guide support. It is a figure which shows the guide support, (a) is a plan view, (b) is a front view, (c) is a sectional view seen from the 4C direction of (b). It is a figure which shows the slope member, (a) is a side view, (b) is a perspective view, (c) is a side view which shows the state which the elevating table is lowered. It is a figure which shows the modification of the slope member. It is a perspective view which shows the manual operation release part. It is a figure which shows the operation panel, (a) is a perspective view, (b) is a figure which shows the initial rotation position, (c) is a figure which shows the operation rotation position. It is a figure which shows the operation of the manual operation release part, (a) is a figure which shows the state of the stopper device corresponding to the initial rotation position of an operation panel, (b) is a figure which shows the state of release of a stopper device. It is a figure which shows the state which used the evacuation device in a wheelchair, (a) is a figure which shows the boarding state, and (b) is a figure which shows the state which reached the floor surface of the lower floor.

As shown in FIGS. 1 and 2, the evacuation device stands on the case 2a which is fitted and fixed to the opening opened in the floor 1 on the upper floor to form the evacuation opening 2 and on the floor surface 3 on the lower floor. It has a guide support column 12 which is provided and whose upper end is fixed to the evacuation opening 2, and a lift 4. The lift 4 is a standby position held in the evacuation opening 2 as shown in FIG. And, as shown in FIG. 3, the evacuation position is driven up and down from this standby position to the evacuation position where the vehicle descends along the guide support column 12 and lands on the lower floor surface 3.

The guide column 12 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 12 is fixed to the floor slab on the lower floor, and the upper end is fixed to the case 2a.

Further, a rack groove 12a is formed on one side wall surface of the guide column 12. As shown in FIG. 2, the rack groove 12a is formed by forming recesses 12b 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 12.

Further, as shown in FIG. 5, a weight 14 suspended by a wire 13 is housed in the hollow portion of the guide support column 12. The end opposite to the fixed end of the wire 13 to the weight 14 is connected to the elevating table 4, and the pulley 15 is arranged between the weight 14 and the fixed end to the elevating table 4. The weight 14 is set to a weight that allows the lift 4 in a state where the user is not on board to be pulled upward, and when the user gets off the lift 4 after reaching the lower floor, the weight 14 of the weight 14 The lift 4 returns to the standby position due to the weight.

Although the weight 14 is directly connected to the wire 13 hanging from the pulley 15 in FIG. 5B, a moving pulley may be interposed between the pulley 15 and the weight 14.

On the other hand, the elevating table 4 is provided with a column insertion opening 4a through which the guide column 12 is inserted. The strut insertion openings 4a are formed in each of the adjacent edges 4b adjacent to the front side edge 10 which serves as a boarding port when an evacuee gets on the elevator 4 in the standby position. These strut insertion openings 4a face the front side edge 10 at equal intervals from the front side edge 10 and, as shown in FIG. 1, by a predetermined distance (δ) from the position of the center of gravity of the elevating table 4. It is formed at a position deviated toward the side edge (back side edge 4c), that is, at an intermediate portion between the back side edge 4c and the position of the center of gravity (G), and the guide support column 12 is formed in the support column insertion opening 4a. Two are erected at opposite positions corresponding to.

A pinion 16, a pitching prevention roller 17, and a rolling prevention roller 18 are arranged around the support column insertion opening 4a in order to raise and lower the elevating table 4 along the guide support column 12 through which the support column insertion opening 4a is inserted as described above. Will be done.

As shown in FIGS. 4 and 5, the pinion 16 is incorporated in the slow-down device 19, is connected to the output shaft 19b of the rotary speed reducer 19a, and meshes with the rack groove 12a of the guide support column 12. In this example, the rotation speed reduction device 19a is a centrifugal brake type, and operates by rotating the pinion 16 to limit the rotation speed thereof.

In the slow-moving device 19, the output shaft 19b is arranged in a posture along the adjacent edge 4b corresponding to each guide support 12, and the two guide columns 12 are in a posture in which the rack grooves 12a face each other. It is erected.

Since two sets of rotary speed reducing devices 19a are used for each slow-down device 19 with the guide support column 12 sandwiched in order to secure the deceleration performance, the dimension of the output shaft 19b in the axial length direction becomes large. Therefore, by arranging the slow-down device 19 with the output shaft 19b in a posture along the adjacent edge 4b, it is possible to suppress the dimension of the slow-down device 19 protruding from the center of the lifting table 4, and the space on the lifting table 4 can be reduced. It can be used effectively.

Further, in this example, the pinion 16 and the output shaft 19b of the rotation speed reducer 19a are connected only in the rotation direction of the pinion 16 when the elevator 4 is lowered, and the one-way clutch is disconnected in the reverse rotation direction. It is connected via 19c, and the rotation deceleration control operates only when the elevator 4 descends.

The pitching prevention roller 17 is provided to prevent rotation around the axis parallel to the front side edge 10 of the elevating table 4. As described above, since the guide column 12 is arranged at a position deviated toward the back side edge 4c with respect to the center of gravity position (G) of the elevator table 4, the elevating table 4 and the guide column 12 come into contact with each other. A clockwise moment acts on the portion in the direction of pushing up the inner edge 4c indicated by the arrow in FIG. 5 (c), that is, in FIG. 5 (c).

In order to counter this moment, the pitching prevention rollers 17 are arranged on the opposite wall surface with the guide columns 12 at different installation heights. In this example, a pair is provided in which the contact height with respect to the wall surface in the back side edge 4c direction is higher than the contact height with respect to the wall surface in the front side edge 10 direction. The pair of pitching prevention rollers 17 press against the wall surface of the guide column 12 corresponding to the generated moment to prevent the elevating table 4 from tilting, and the elevating table 4 is maintained in a horizontal posture in this state. ..

Further, in this example, a pair of auxiliary pitching prevention rollers 17'are further arranged at line-symmetrical positions with respect to the pair of pitching prevention rollers 17 described above in preparation for a case where a moment in the opposite direction is applied to the lifting table 4. To.

On the other hand, the rolling prevention roller 18 is provided to prevent rolling rotation around the axis parallel to the adjacent edge 4b of the lifting platform 4, and is a wall surface parallel to the adjacent edge 4b of the guide column 12, that is, a rack groove 12a. Is arranged corresponding to the wall surface on which the is formed and the opposite wall surface.

Further, a recess 8 for guiding the wheel of the wheelchair 7 is recessed on the surface of the lift 4 so that the wheelchair 7 can use it. The recess 8 is formed over almost the entire length from the front side edge 10 to the back side edge 4c of the elevating table 4, and the wheelchair 7 can be boarded on the elevating table 4 after riding on the front side edge 10 and then back. This is done by moving the side edge in the 4c direction.

Further, as shown in FIG. 6, the recess 8 is formed with an inclined surface 11 extending to the back surface of the front side edge 10 with a start end 9 at a position separated from the front side edge 10 by a predetermined distance. After evacuating to the lower floor, the occurrence of a step is prevented when the wheelchair 7 is retracted and descends to the lower floor surface 3.

Further, in order to absorb the step between the evacuation platform 4 and the floor surface 1a on the upper floor side when the elevator 4 is in the standby position, the evacuation opening 2 has a slope member 5 and a slope controller 6 that controls the slope member 5. Is installed.

The slope member 5 has a width direction dimension that can be fitted into the recess 8, and is a member having a U-shaped cross section in which guide rising pieces 5a are erected over the entire length on both side edges, and the two recesses 8 are formed. Correspondingly, two slope members 5 are fixed to the rotating shaft member 20 constituting the rotating shaft of the slope member 5. The rotary shaft member 20 is arranged along one side edge of the case 2a corresponding to the front side edge 10 of the elevating table 4, and as shown in FIG. 6A, the free end is in the standby position. As shown in FIG. 6 (c), it rotates between the set position where it fits into the recess 8 of the table 4 and the hanging posture suspended from the rotating shaft member 20.

As shown in FIG. 6A, when the lift 4 is held in the standby position, the step between the floor surface on the upper floor side and the recess 8 is between the recess 8 and the back surface of the lift 4. The interval between them, that is, it is generated when the elevator 4 lands on the floor surface on the lower floor side, and is larger than the step absorbed by the inclined surface 11.

In consideration of this, as shown in FIG. 6A, the slope member 5 extends beyond the start end of the inclined surface 11 in the direction of the back side edge 4c at the set position, and the inclined surface 11 is inclined. By setting the inclination angle to be substantially the same as that of the above, it is possible to smoothly board and descend the elevating platform 4.

Further, as described above, the determination of the overhang length of the slope member 5 is made on the condition that the inclination angle is substantially the same as that of the inclined surface 11, and as shown in FIG. 11A, the wheelchair 7 is determined. It is also possible to make it a condition that interference with the rear wheels does not occur, and when the length of the slope member 5 is determined in this way, the wheelchair 7 is placed in the correct boarding position in combination with the handrail body position described later. It can function as an indirect guide to guide.

In the above, the case where the slope member 5 is set to have substantially the same inclination angle as the inclination of the inclined surface 11 at the set position has been shown, but it is not always necessary to have the same inclination angle as long as it does not affect the boarding of the wheelchair 7. Absent.

The slope control body 6 is formed by rotatably connecting the tire member 6b to the tip of the support rod 6a integrally connected to the rotation shaft member 20 of the slope member 5. As will be described later, the tire member 6b is formed of a hollow body made of synthetic resin, a tire made of rubber, or the like in order to absorb the collision sound when the tire member 6b collides with the elevator platform 4.

The slope control body 6 is arranged at a position corresponding to the adjacent edge 4b of the lift table 4 so as not to narrow the effective area on the lift table 4, and the slope control body 6 and the slope member 5 are shown in FIG. 6 (c). As shown in the above, when the slope member 5 takes a suspended posture, the tire member 6b is arranged at an angle slightly deviated from the position directly below in the direction of the rear edge 4c.

Therefore, in this example, when the lift 4 descends from the standby position shown in FIG. 6A, the slope control body 6 that has lost its support rotates clockwise in FIG. 6A, and the state shown in FIG. 6C is changed. After that, it lands on the lower floor surface 3. When the evacuee gets off the elevator 4 from this state, the elevator 4 rises toward the standby position by the action of the weight 14 described above.

As shown in FIG. 6C, when the surface of the elevating table 4 comes into contact with the tire member 6b of the slope control body 6 during the ascent, the slope control body 6 rotates due to the upward force of the elevating table 4. When a counterclockwise rotational moment with the shaft member 20 as the center of rotation is generated and further rises, the state of FIG. 6A is restored.

The slope control body 6 is set to a length at which the free end of the slope member 5 does not interfere with the recess 8 or the inclined surface 11 when the elevating platform 4 rises from the state shown in FIG. 6 (c).

In the above, the case where the slope member 5 is connected to one rotating shaft member 20 and further, the support rods 6a of the slope control body 6 are connected to both ends of the rotating shaft member 20 is shown. As shown in a), the rotation shaft member 20 may be connected to each slope member 5, and the support rod 6a of the slope control body 6 may be connected to one end of each rotation shaft member.

Further, the slope member 5 shown in FIG. 5 is shown to be formed in a U-shaped cross-sectional shape that can be fitted into the recess 8, but as shown in FIG. 7B, the slope member 5 of the adjacent slope member 5 It is also possible to connect the upper ends of the guide rising pieces 5a with each other by the connecting plane 5b to form them integrally as a whole.

Further, in the above, the case where the recess 8 is formed in two rows so as to correspond to the left and right wheels of the wheelchair 7, but as shown in FIG. 7 (c), the recess 8 has one groove so as to correspond to both the left and right wheels. In this case, the slope member 5 is formed to be wide corresponding to the recess 8 of one line.

Further, as shown in FIG. 1, a handrail body 21 is attached to the lift 4 as shown in FIG. The handrail body 21 has a horizontal rod 21a and a vertical rod 21b extending in a direction perpendicular to both ends of the horizontal rod 21a, and is formed in a U shape. The free end is rotatably connected to the vicinity of the inner edge 4c of the elevating table 4.

When not in use, the handrail body 21 is held in a lying position along the surface of the elevating table 4, and can be shifted to an upright position by pulling up the horizontal rod 21a.

In the above, the case where the recess 8 is provided on the surface of the elevating table 4 is shown, but the surface of the elevating table 4 can also be formed by a flat surface.

Further, the evacuation device is provided with a stopper device 23 for holding the lift 4 in the standby position, and the horizontal rod 21a of the handrail body 21 is provided with a manual release operation unit for manually releasing the stopper device 23. 24 is arranged.

As shown in FIG. 10, the stopper device 23 is arranged on the elevating table 4 side, has a hook portion 25a at the tip, and is arranged around a rotating shaft 25b and a rotatable stopper member 25, and is arranged on the guide column 12 side. The hook portion 25a has a locked portion 23a to be engaged and disengaged, and the stopper member 25 is urged by the torsion spring 23b on the locked position side with the locked portion 23a, that is, counterclockwise in FIG. To.

Further, the stopper member 25 is provided with a stopper release portion 26 provided with a pedal-shaped release operation input portion 26a, and the stopper release portion 26 is shown by pushing down the release operation input portion 26a against the reaction force of the torsion spring 23b. When rotated clockwise at No. 10, the stopper member 25 rotates in the direction of the unlocked position with the locked portion 23a.

Therefore, in this example, when the elevating table 4 is in the standby position, the stopper member 25 of the stopper device 23 is locked to the locked portion 23a as shown in FIG. 10A to regulate the descent of the elevating table 4. ..

When the release operation input unit 26a of the stopper release unit 26 is pushed down from this state, the hook portion 25a is released from the locked portion 23a as shown in FIG. 10B, and the lift 4 is lowered. Start.

Further, when the elevating table 4 moves to the standby position side, first, the locked portion 23a and the inclined portion 25c formed at the upper end of the hook portion 25a interfere with each other, and the hook portion 25a is as shown in FIG. 10B. Once the lift 4 reaches the standby position after being rotationally driven in the unlocking direction, it returns to the locked state by the restoring force of the torsion spring 23b.

A manual release operation unit 24 is attached to the handrail body 21 so that the stopper device 23 can be operated from above the wheelchair 7. As shown in FIG. 8 and below, the manual release operation unit 24 includes an operation panel 28 in which the rotating body 28a operated by the handle lever 27 is housed in the housing 28b, and a cable that transmits the displacement of the rotating body 28a to the stopper device 23. The operation panel 28 is composed of the device 29 and is arranged at the center of the horizontal rod 21a of the handrail body 21 so that it can be operated by either the left or right hand.

The cable device 29 is formed by movably inserting the inner cable 29a into the outer cable 29b, and one end thereof is connected to the operation panel 28 and the other end is connected to each stopper device 23.

The rotating body 28a is a rod-shaped body whose central portion is rotatably connected to the center position of the circular housing 28b, and is inside the housing 28b from the cable insertion hole 28c (see FIG. 10B) provided in the housing 28b. The inner cable 29a of the cable device 29 introduced in the above is connected. The rotating body 28a can be rotated between the initial rotation position shown in FIG. 9B and the operation rotation position for pulling the inner cable 29a into the housing 28b as shown in FIG. 9C. ..

On the other hand, the end portion of the outer cable 29b on the operation panel 28 side is in contact with the flat surface portion forming the cable insertion hole 28c, and the contact portion between the outer cable 29b and the flat surface portion is an immovable fixed point 29c. It becomes.

As described above, the other end of the inner cable 29a of the cable device 29 whose one end is connected to the operation panel 28 passes through the cable insertion hole 28c provided in the release operation input unit 26a and opens the support column insertion opening of the elevating table 4. It is fixed in the vicinity of 4a (fixed point 29d), and the outer cable 29b comes into contact with the release operation input unit 26a.

As shown in FIG. 10, the outer cable 29b is laid out between the fixed point 29c on the operation panel 28 side and the contact point with respect to the release operation input unit 26a in a state where an appropriate extra length is secured, and further. In order to regulate the wiring path of the outer cable 29b in which the inner cable 29a is fixed at a predetermined position, both ends of the outer cable 29b are in a pressure contact state with the corresponding portions and do not separate from them.

When the rotating body 28a is in the initial rotating position, the end portion of the outer cable 29b on the stopper device 23 side is shown in FIG. 10A regardless of whether the handrail body 21 is in the lying position or the standing position shown in FIG. As shown, the release operation input unit 26a is held at a position where it does not act. When the rotating body 28a is rotationally driven by rotating the handle lever 27 from this state, as shown in FIG. 10B, the inner cable 29a is called into the housing 28b, and as a result, the entry into the housing 28b is immobile. The outer cable 29b blocked at the point 29c moves downward so as to be guided by the inner cable 29a, and pushes down the release operation input unit 26a to operate.

From the above, in this example, as shown in FIG. 11A, the user of the wheelchair 7 can get on the lift platform 4 from the front side edge 10 through the slope member 5. After that, when the handrail body 21 is raised and the operation lever is further rotated, the stopper device 23 is released and the elevating table 4 starts descending.

As shown in FIG. 11B, when the floor surface 3 on the lower floor is reached, the step between the floor surface 3 on the lower floor and the lift 4 is eliminated by the inclined surface 11 simply by retracting the wheelchair 7. , It is possible to move to the floor 3 on the lower floor, and smooth evacuation is possible.

In the above, the object to be mounted on the lift 4 has been described as the wheelchair 7, but in addition to this, a stretcher or the like can also be mounted.

1 Upper floor 2 Evacuation opening 3 Lower floor 4 Lifting platform 5 Slope member 6 Slope controller 7 Wheelchair 8 Recess 9 Starting end 10 Front side edge 11 Inclined surface

Claims (3)

A lift that is driven up and down between the standby position held in the evacuation opening on the floor on the upper floor and the floor on the lower floor,
It is rotatably connected to the upper end of the side wall surface of the evacuation opening, and the free end rides on the elevator in the standby position and rises from the set position passed between the upper surface of the evacuation opening and the elevator. A slope member that rotates in a suspended position and is suspended in the evacuation opening as the vehicle descends.
It has a slope control body that moves the slope member from the suspended posture to the set position when moving the lift to the standby position.
An evacuation device in which the slope control body is fixed to a rotation shaft of the slope member, and a free end portion interferes with an elevating platform that rises toward a standby position and rotates to drive the slope member to a set position. A lift that is driven up and down between the standby position held in the evacuation opening on the floor on the upper floor and the floor on the lower floor,
It is rotatably connected to the upper end of the side wall surface of the evacuation opening, and the free end rides on the elevator in the standby position and rises from the set position passed between the upper surface of the evacuation opening and the elevator. A slope member that rotates in a suspended position and is suspended in the evacuation opening as the vehicle descends.
It has a slope control body that moves the slope member from the suspended posture to the set position when moving the lift to the standby position.
The elevating platform is formed with recesses on which the wheels of a wheelchair or stretcher are placed from the front side edge to the back side edge, which is the entrance to the elevating table.
The tip of the slope member in the set position is located in the recess of the lift in the standby position.
In the recess, an inclined surface that gradually becomes lower in height is formed from the start end toward the front side edge that serves as the entrance to the elevator.
The slope member is an evacuation device that extends to a position where the free end exceeds the start end of the inclined surface at the set position. A lift that is driven up and down between the standby position held in the evacuation opening on the floor on the upper floor and the floor on the lower floor,
It is rotatably connected to the upper end of the side wall surface of the evacuation opening, and the free end rides on the elevator in the standby position and rises from the set position passed between the upper surface of the evacuation opening and the elevator. A slope member that rotates in a suspended position and is suspended in the evacuation opening as the vehicle descends.
It has a slope control body that moves the slope member from the suspended posture to the set position when moving the lift to the standby position.
The elevating platform is formed with recesses on which the wheels of a wheelchair or stretcher are placed from the front side edge to the back side edge, which is the entrance to the elevating table.
The tip of the slope member in the set position is located in the recess of the lift in the standby position.
The slope control body is an evacuation device that abuts on the upper surface of the elevating platform that rises toward the standby position on the side adjacent to the recess, and interferes with the elevating platform to drive the slope member to the set position.

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