JPH07454A - Stairway obliquely moving lifter for wheelchair - Google Patents

Abstract

PURPOSE:To provide a safe device allowing a wheelchair living person such as a disabled person or an old person to move between the lower floor and the upper floor along with a wheelchair without requiring the much labor of a helper in a general home and with reduced power consumption. CONSTITUTION:This stairway obliquely moving lifter for a wheelchair is constituted of a carriage 1 having a vertical lift mechanism 3 and a riding plate 4 and a obliquely moving mechanism 2. The obliquely moving mechanism 2 is arranged to one side wall of an existing stairway and an access space is minimized by the vertical lift mechanism 3 and the riding plate 4 is driven at the time of non-use to be folded to ensure the passage of healthy people.

Description

Detailed Description of the Invention

[0001]

This invention relates generally to lifters,
More specifically, the present invention relates to a slant lifter for raising or lowering a wheelchair for a disabled person or an elderly person in a general household while the user rides along the slope of the stairs.

[0002]

2. Description of the Related Art Conventionally, elevators have been used to move up and down in wheelchairs, or wheelchair escalators installed at some stations have been used, and these facilities are expensive to install. Therefore, in general households, wheelchair users, such as persons with disabilities and the elderly, can travel between the upper floor and the lower floor by (i) being carried on the back of a person and going up and down. Wheelchairs are transported separately, such as when people transfer to a rowing machine and only move up and down.

[0003]

[Problems to be Solved by the Invention] It takes a considerable amount of labor and time for a person in a wheelchair to get out of the wheelchair, lift the person and the wheelchair up and down with double labor, and then get on the wheelchair again. Therefore, a wheelchair user can easily go up and down between the lower floor and the upper floor with a wheelchair-ridden passenger, does not require a large access space, does not require a large output, and is required to have a relatively low-priced lifting device. There is.

[0004]

A staircase skew lifter for a wheelchair according to the present invention comprises a carriage having a vertical lift mechanism and a board, and a skew mechanism, and the carriage cantilevers the board by means of a pivot shaft. It is supported like a beam and moves diagonally by a skewing mechanism so that it can reciprocate between the lower floor and the upper floor, and the boarding plate moves up and down by a vertical lift mechanism at the skew stop position on the lower floor and the upper floor. The wheelchair can be put in and out of the wheelchair, and when not in use, the wheelchair is pivoted around a pivot point and folded to the side of the skew mechanism so as not to interfere with the lifting of a healthy person. Solved.

[0005]

[Function] When a wheelchair user (hereinafter referred to as a user) goes from a lower floor to an upper floor in a wheelchair, the user is in a "suspended lift" with the user riding on a board (also called a platform) together with the wheelchair. When the button is pressed, the board lifts vertically by the vertical lift mechanism and stops at a fixed position to release the electrical interlock. When the "diagonal ascend" button is pressed, the oblique mechanism is activated and the vertical lift mechanism is activated. , The carriage including the board is skewed. By this vertical ascending movement of the board, the board can be positioned near the stairs, and the access space can be reduced.

Next, the slanting motion reduces the power consumption at a reasonable speed, automatically stops by the limit switch at the slanting rising limit, and pushes the "hanging down" button to lower the board. When the landing switch is activated, it stops and the wheelchair moves from the board to the upper floor. When going from the upper floor to the lower floor, it is the same as the above except that the "skew down" button is pressed instead of the "skew up". When this staircase lift lifter for wheelchairs is not used, the board can be pivoted and folded so that it does not interfere with the lifting of a healthy person.

[0007]

1 is a front view of an embodiment of a wheelchair staircase oblique lifter according to the present invention, which is a carriage 1
And the skew feeding mechanism 2. The carriage 1 is composed of a vertical lift mechanism 3 and a boarding plate 4 as shown in FIGS. 2 and 3 in front and side views, respectively. The vertical lift mechanism 3 has a box-shaped cross section that stands upright on one side surface of the staircase, and has a ball screw 6 that transmits a driving force in the vertical direction and a ball nut 7 that engages with the ball screw 6 inside thereof. In addition, a box-shaped block 9 pivotally connected to an arm 8 for supporting the board 4 is provided in the lower portion, and two fixed angle members 10 are respectively incorporated therein so as to be vertically slidable. 6 is driven via a belt 12 by an elevating motor (brake motor with helical reducer) 11 provided on the side of the column 5 in parallel with the column 5. At the lower end of the column 5, there are wheels 14 rolling on the lower guide rails 13 of the skew mechanism 2 (see FIGS. 1, 2, and 4C), and on the back side surface (FIG. 2) near the upper end. A horizontal roller that rotatably supports the vertical lift mechanism 3 and the boarding plate 4, which are engaged with the upper guide rail 15 and are supported in a cantilever shape, so that they are inclined to lean due to the weight of the wheelchair and the user. A vertical roller 16 and a vertical roller 17 are provided as shown in FIGS. 3 and 5A. At the lower part of the same back surface of the column 5, as shown in FIG. 3 and FIG. 5 (B), a connecting fitting 20 fixed to the chain 19 in the chain case 18 is further provided.
A guard 21 formed by bending a pipe horizontally in a rectangular ring shape is provided on the board side slightly above the center of the vehicle so as to be able to swing up and down via an arm 22. The guard 21 is provided when the wheelchair rides on the board. Is flipped up.

The boarding plate 4 of the carriage 1 has a substantially rectangular plate shape and has two arms 8 fixed upright on the upper surface near the center of one end face, and a vertical lift mechanism is provided between the two arms 8. The box-shaped block 9 of No. 3 is inserted and connected by a pivot shaft 23, and tilt plates 24 and 25 are openably and closably attached to both sides of the boarding plate 4 at right angles to the oblique movement direction.

FIG. 4 is a front view of the skew feeding mechanism 2, and FIG.
5A, 5B, and 5C are enlarged views of cross sections A, B-B, and C-C, respectively.
Lower guide rails 15 and 13 and chain case 18
And a motor 28. The lower guide rails 15 and the upper guide rails are grooved steel and are used for supporting columns 2 on the lower and upper floors.
6, 27, the upper and lower ends thereof are fixed by bolts (not shown) or the like, and fixed to the sleepers 13a along the stairs 41 by flat head screws or the like. The interrupted chain case 18 is made of steel having a C-shaped cross section, is fixed to the support columns 26 and 27 at the upper and lower ends by bolts and is fixed in parallel to the lower guide rail 13, and is internally driven and driven by a sprocket 19.
Chain 1 with built-in chain 19 stretched over a and 19b
A part of 9 is connected to the connecting fitting 20 of the column 5 as shown in FIGS. 3 and 5B. The drive sprocket 19a is driven by a motor 28 with a worm speed reducer having a cell clock effect in which rotation is not transmitted from the driven side to the drive shaft, and the motor 28 is bolted to a floor surface 29 and a bracket 30 fixed to the chain case 18. Has been done. The upper guide rail 15 of the upper stage is a grooved steel, and the upper and lower ends of the upper and lower ends are bolted to the support columns 26 and 27, and fixed to the lower guide rail 13 in parallel with the sleeper 15a if necessary, and A flat steel member 15b is welded to the side surface of the rail 15 at a right angle. As shown in FIGS. 4 and (A), the vertical roller of the column 3 is attached to the groove 15C of the upper guide rail 15 and the side surface of the flat steel member 15b. 17 and the horizontal roller 16 (see FIG. 3) are engaged. The support pillars 27 on the upper floor can be omitted and the walls can be used directly.

The operation will be described below. When a person in a wheelchair goes from the lower floor to the upper floor in the wheelchair 40, the caregiver manually opens the tilt plate 25 to transfer the wheelchair 40 to the board 4, and then tilts. When the plate 25 is closed and the "lifting" button is pressed, the lifting motor 11 rotates and the board 4 moves up through the ball screw 6, the ball nut 7, the angle member 10, the box-shaped block 9 and the like, about 250 mm. Then, the limit switch (not shown) is activated and stopped, the electrical interlock is released, and when the "diagonal ascend" button is pressed, the motor 28 is rotated, the chain 19 is driven, and the connecting metal fitting 20 is used. Carriage 1 skews. At this time, the wheels 14 roll on the lower guide rails 13, and the horizontal rollers 16 and the vertical rollers 17 on the upper portion of the column 3 are flat steel members 15 respectively.
b. The carriage 1 is guided by the upper guide rail 15 and supports the loaded board 4 having a cantilever structure and is slanted upward. In the ascending ascending limit, it is automatically stopped by the ha limit switch (not shown), and when the "hanging down" button is pressed, the boarding plate 4 is lowered and the landing switch (not shown) is activated to stop the descent. To do. At this time, if the landing switch is in a position where it does not operate for some reason, a descent limit switch (not shown) operates and stops. Then, the tilting plate 24 is manually opened, and the wheelchair 40 descends from the boarding plate 4.
When descending, the same as above except that the "skew down" button is pressed instead of the "skew up" button.

Due to the lifting mechanism of the boarding board 4, it is difficult to completely land on the floor due to the size of the load, the play of the switch itself, etc., and the boarding board swings when the wheelchair moves, which makes transfer difficult.
It may induce psychological anxiety, and to prevent it,
It is preferable that knock pins (not shown) are projected on the tilt plates 24 and 25, a set hole is provided at a relative position on the floor surface, and both are fitted to fix the board. For stairs with no walls or pillars on the side, support pillars must be provided on the lower floor and upper floor, but in a normal wooden building only the lower floor is a solid wooden building that uses walls and pillars and omits the supporting pillars. It is also possible.

Further, when a direct current is applied to the stator coil of the AC motor in order to make the stop position of the skewing motor 28 accurate, a power generation action occurs internally, and a short-circuit current flows through the bar of the rotor to cause a braking effect. Using the principle that
A combination of a small transformer, a silicon diode, a power relay, and a timer enables the main motor power (AC100V)
Immediately after the FF, DC24V10A was applied for 0.3 seconds to stop almost instantly, and the error of the stop position was set within several mm.

When vertically lifting an object having a mass of Wkg at a speed of Hm / s, the efficiency of the drive system is F and the gravitational acceleration is G.
(= 9.8 m / s ² ) Required output P (Watt)
Is P = 9.8 WH / F, (i) if the lifting load is 100 kg and the lifting speed is 20 mm / s,
The output of the lifting motor 11 is 9.8 × 100 × 0.025.
× 1 / 0.8 = 30.6 watts, so a 40 W brake motor is combined with a 1/3 helical reducer.
(Ii) In the case of skew, the height from the lower floor to the upper floor is 2,
Ascending speed is 2,70 when moving 700 mm in 20 seconds.
0/20 = 135 (mm / s), pulling load is 120kg including carriage, worm reducer efficiency is 50
%, The required output is 9.8 × 120 × 0.135 ×
1 / 0.5 = 318 watts, thus using a 400 W capacitor motor is sufficient.

[0014]

As described above, the staircase lift lifter for wheelchairs according to the present invention is installed on an existing staircase in a general home to minimize access space, reduce power consumption at a reasonable speed, and ensure safe operation. , The labor of wheelchair users and caregivers is significantly reduced, and when not in use, the board and guard are folded to secure a passage for healthy people.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of a staircase lift lifter for wheelchairs according to the present invention.

FIG. 2 is a front view of a carriage of a staircase lift lifter for wheelchairs according to the present invention.

FIG. 3 is a side view of FIG. 2 viewed from the arrow.

FIG. 4 is a front view of a skew mechanism of a stair skew lifter for wheelchairs according to the present invention.

5 (A), (B), and (C); FIG.
It is an expanded sectional view of A, BB, and CC section.

[Explanation of symbols]

 1 Carriage 2 Oblique mechanism 3 Vertical lift mechanism 4 Riding plate 6 Ball screw 7 Ball nut 11 Lifting motor 19 Chain 19a Drive sprocket 19b Driven sprocket 28 Oblique motor 40 Wheelchair

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[Procedure amendment]

[Submission date] December 27, 1991

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 1

[Correction method] Change

[Correction content]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 2

[Correction method] Change

[Correction content]

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 3

[Correction method] Change

[Correction content]

[Procedure amendment 4]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 4

[Correction method] Change

[Correction content]

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction content]

[0007]

1 is a front view of an embodiment of a wheelchair staircase oblique lifter according to the present invention, which is a carriage 1
And the skew feeding mechanism 2. The carriage 1 is composed of a vertical lift mechanism 3 and a boarding plate 4 as shown in FIGS. 2 and 3 in front and side views, respectively. The vertical lift mechanism 3 has a box-shaped cross section that stands upright on one side surface of the staircase, and has a ball screw 6 that transmits a driving force in the vertical direction and a ball nut 7 that engages with the ball screw 6 inside thereof. In addition, a box-shaped block 9 pivotally connected to an arm 8 that supports the board 4 is provided at the bottom, and two channel members (or channel steels) 10 that are fixed to each other are built in so that they can slide vertically. The ball screw 6 is driven via a roller chain 12 by an elevating motor (brake motor with helical reducer) 11 provided on the side of the column 5 in parallel with the column 5. At the lower end of the column 5, there are wheels 14 rolling on the lower guide rails 13 of the skew mechanism 2 [see FIGS. 1, 2, and 4 (C)], and at the back side near the upper end (see FIG. 2). ) Rotatably supports the vertical lift mechanism 3 and the boarding plate 4 which are engaged with the upper guide rail 15 and are supported in a cantilever shape so as to be inclined by the weight of the wheelchair and the user. The horizontal roller 16 and the vertical roller 17 are
And as shown in FIG. 5 (A). As shown in FIG. 3 and FIG. 5 (B), a connecting fitting 20 fixed to the chain 19 in the chain case 18 is provided at the lower part of the same back side of the column 5 and slightly above the center of the column 5. Guards 21 in which a pipe is bent horizontally in a rectangular ring shape are provided on the boarding board side so as to be able to swing up and down via arms 22, and the guards 21 are flipped up when a wheelchair rides on the boarding board. .

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction content]

The boarding plate 4 of the carriage 1 has a substantially rectangular plate shape and has two arms 8 fixed upright on the upper surface near the center of one end face, and a vertical lift mechanism is provided between the two arms 8. The box-shaped block 9 of No. 3 is inserted and connected by the pivot shaft 23, and the tilting plate 2 is provided on both front and rear sides of the boarding plate 4 in the oblique movement direction.
4, 25 are attached so that they can be opened and closed.

[Procedure Amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction content]

FIG. 4 is a front view of the skew feeding mechanism 2, and FIG.
5A, 5B, and 5C are enlarged views of cross sections A, B-B, and C-C, respectively.
Lower guide rails 15 and 13 and chain case 18
And a motor 28. The lower guide rail 13 and the upper guide rail 15 are grooved steel, and are fixed to the support columns 26 and 27 on the lower floor and the upper floor by fixing bolts (not shown) at their upper and lower ends, respectively. Sleeper 13 along 41
It is fixed to a with flat head screws. Middle chain case 1
8 is made of shaped steel having a C-shaped cross section,
The upper and lower ends are bolted to the lower guide rail 13
Driven and driven sprocket 1 fixed in parallel to
A chain 19 stretched around 9a and 19b is built in, and a part of the chain 19 is connected to the connecting fitting 20 of the column 5 as shown in FIGS. 3 and 5B. The drive sprocket 19a is driven by a motor 28 with a worm reducer having a self-locking effect in which rotation is not transmitted from the driven side to the drive shaft, and the motor 28 is bolted to a floor surface 29 and a bracket 30 fixed to the chain case 18. Has been done. The upper guide rail 15 of the upper stage is a grooved steel, and the upper and lower end portions of the upper guide rail 15 are bolted to the support columns 26 and 27,
It is fixed in parallel to the lower guide rail 13 via sleepers 15a as necessary, and a flat steel member 15b is welded to the side surface of the guide rail 15 at a right angle, as shown in FIGS. 4 and 5 (A). Vertical rollers 17 and horizontal rollers 16 (see FIG. 3) of the column 3 are engaged with the side surfaces of the groove 15c of the upper guide rail 15 and the flat steel member 15b. The support pillars 27 on the upper floor can be omitted and the walls can be used directly.

[Procedure Amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction content]

The operation will be described below. When a person in a wheelchair goes from the lower floor to the upper floor in the wheelchair 40, the caregiver manually opens the tilt plate 25 to transfer the wheelchair 40 to the board 4, and then tilts. When the plate 25 is closed and the "lifting" button is pressed, the elevating motor 11 rotates and the board 4 is mounted via the ball screw 6, the ball nut 7, the channel (or channel steel) member 10, the box-shaped block 9 and the like. Rises to about 250 m
At m, a limit switch (not shown) is activated and stopped,
When the electrical interlock is released and the "diagonal ascend" button is pressed, the motor 28 rotates, the chain 19 is driven, and the carriage 1 skews via the coupling fitting 20 and the like. At this time, the wheel 14 rolls on the lower guide rail 13, and the horizontal roller 16 and the vertical roller 17 on the upper portion of the column 3 are guided by the flat steel member 15b and the upper guide rail 15, respectively, and cantilevered under load. The carriage 1 skews upward while supporting the board plate 4 having a beam structure. The limit switch (not shown) automatically stops at the slanting rising limit, and when the "hanging down" button is pressed, the boarding plate 4 is lowered and the landing switch (not shown) is activated to stop the descending. . At this time, if the landing switch is in a position where it does not operate for some reason, a descent limit switch (not shown) operates and stops.
Then, the tilt plate 24 is manually opened and the wheelchair 40 is lowered from the board 4. When descending, the same as above except that the "skew down" button is pressed instead of the "skew up" button.

[Procedure Amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction content]

Due to the lifting mechanism of the boarding board 4, it is difficult to completely land on the floor due to the size of the load, the play of the switch itself, etc., and the boarding board swings when the wheelchair moves, which makes transfer difficult.
It may induce psychological anxiety, and to prevent it,
It is preferable that knock pins (not shown) are projected on the tilt plates 24 and 25, a set hole is provided at a relative position on the floor surface, and both are fitted to fix the board. For stairs with no walls or pillars on the side, support pillars must be provided on the lower and upper floors, but in normal wooden buildings only the lower floor is used, and in solid wooden buildings, support pillars are omitted by using walls and pillars. It is also possible to do so.

[Procedure Amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction content]

Further, when a direct current is applied to the stator coil of the AC motor in order to make the stop position of the skewing motor 28 accurate, a power generation action occurs internally, and a short-circuit current flows through the bar of the rotor to cause a braking effect. Using the principle that
A combination of a small transformer, a silicon diode, a power relay, and a timer enables the main motor power (AC100V)
Immediately after the FF, a current of DC24V10A is applied for 0.3 seconds to stop almost instantly, and the error of the stop position is within several mm. ─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] November 20, 1992

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of a staircase lift lifter for wheelchairs according to the present invention.

FIG. 2 is a front view of a carriage of a staircase lift lifter for wheelchairs according to the present invention.

FIG. 3 is a side view taken along the arrow III in FIG.

FIG. 4 is a front view of a skew mechanism of a stair skew lifter for wheelchairs according to the present invention.

5 (A), (B) and (C) of this figure are partial enlarged cross-sectional views taken along arrows AA, BB and CC of FIG. 4, respectively.

[Others] No change in the substance of the description

Claims (4)

[Claims] 1. A stairs oblique lifter for wheelchair consumers, comprising: a carriage having a board for mounting the wheelchair and a vertical lift mechanism for vertically moving the board for carrying the wheelchair vertically. The carriage comprises a slanting mechanism that ascends and descends along the slope of the stairs, and the carriage supports the board in a cantilever shape by means of a pivot shaft, and the slanting mechanism descends and descends. It moves back and forth between the floor and the upper floor, and the board is moved up and down by the vertical lift mechanism at the slant stop position on the lower floor and the upper floor so that the wheelchair can be loaded and unloaded. A staircase lift lifter for wheelchairs. 2. The staircase lift lifter for a wheelchair according to claim 1, wherein when not in use, the staircase lifter is pivoted around the carriage pivot shaft and folded toward the skew mechanism to hinder the lifting of a normal person. A staircase lift lifter for wheelchairs, characterized by being kept from coming. 3. The staircase oblique lifter for a wheelchair according to claim 1, wherein the vertical lift mechanism is a lifting motor.
A staircase lift lifter for wheelchairs, characterized in that the rotation of the rotor is transmitted in a vertical direction by a ball screw and a ball engaging with the ball screw. 4. The staircase lift lifter for a wheelchair according to claim 1, 2 or 3, wherein the tilting mechanism is stretched in parallel and obliquely along the slope of the stairs between the drive sprocket and the driven sprocket. A stair climb lifter for wheelchairs, which is connected to a chain and driven by a skew motor.