JP2000026063A - Chair type staircase escalating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chair type staircase escalating apparatus which is foldable so as not to obstruct those who go up and down a staircase on foot, without reducing the effective width of the staircase when the apparatus is not used. SOLUTION: This chair type staircase escalating apparatus is provided with an escalating mechanism 4 moving along a guide rail installed along the inclination of a staircase, and a chair 7 fixed to the escalating mechanism 4, wherein the seated part 3 of the chair 7, the arm rest 6, and the foot rest bed 4 of the chair 7 are allowed to be raised or lowered so that they can be folded upward respectively from a roughly horizontal condition to an upward condition and interlocked so that the arm rest 6 and the foot rest bed 4 may be folded when the seated part 3 is folded upward. By bringing the seated part 3, the arm rest 6, and the foot rest bed 4 of the chair 7 into a folded-up condition while not in use, it is possible to substantially reduce the protruding amount of the chair 7 into the staircase.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chair-type stair climbing and lowering device capable of climbing up and down stairs while sitting on a chair. More specifically, the present invention is capable of simultaneously folding an armrest and a footrest when folding a seat. The present invention relates to a chair structure which can be easily and efficiently folded and can be folded low when not in use.

[0002]

2. Description of the Related Art As a welfare device for people who have difficulty in ascending and descending stairs, a guide rail provided along the slope of the stairs is provided with a chair that moves along the guide rails. A chair-type stair-climbing device that can be used has already been proposed.

[0003] In the chair type stair climbing and lowering device, as shown in FIG.
An elevating mechanism 2 is mounted on the guide rail 1, and a seat 7 including a seat 3, a footrest 4, a backrest 5 and an armrest 6 is attached to the elevating mechanism 2. By operating the switch in a state where the chair is in the up position and activating the lifting mechanism 2, the chair 7 moves along the guide rail 1, and the stairs A can be moved up and down while sitting on the chair 7.

A chair 7 in a conventional chair type stair climbing device
The seat 3, the footrest 4, and the armrest 6 can be individually folded so that they are not bulky when not in use and do not obstruct a person who walks up and down the stairs A.

[0005]

By the way, in a structure in which the seat 3, the footrest 4, and the armrest 6 are individually folded like a conventional chair-type stair climbing device, the seat 3 and the footrest are folded at the time of folding. 4 and the armrest 6 must be operated individually, and there is a problem that the folding work is troublesome and troublesome.

Accordingly, an object of the present invention is to make it possible to fold the seat portion, the footrest, and the armrest of the chair in a single operation in conjunction with each other, thereby enabling a one-action folding operation. An object of the present invention is to provide a stair climbing device.

[0007]

According to a first aspect of the present invention, a guide rail provided along a slope of a stair is provided with a lifting mechanism that moves along the guide rail. In the chair type stair climbing device for attaching a chair to the elevating mechanism, the seat portion, the armrest, and the footrest of the chair are foldable so that they can be folded upward from a substantially horizontal state. The footrest is configured so that the armrest and the footrest can be folded at the same time when the seat is folded.

The seat and the footrest are linked by using a cam and a link mechanism so that the footrest synchronizes with the ups and downs of the seat, and the seat and the armrest are moved when the seat is upright. The armrest stands up, and the seat part falls down with the armrest left.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. The basic structure of the chair-type stair climbing device is as described in the section of the prior art. As shown in FIG. It has a structure in which a lifting mechanism 2 is mounted, and a chair 7 including a seat 3, a footrest 4, a backrest 5, and an armrest 6 is attached to the lifting mechanism 2, and the armrest is placed on the chair 7. Operate the switch provided in 6 etc.,
By activating the lifting mechanism 2, the chair 7 moves along the guide rail 1, and the stairs A can be raised and lowered while sitting on the chair 7.

As shown in FIG. 3, the elevating mechanism 2 accommodates a motor inside a case 8 supported on the guide rail 1 via a plurality of rollers, and is disposed along the length of the guide rail 1. The case 8 is moved along the guide rail 1 by driving the sprocket meshing with the chain that has been driven by the motor.

The chair 7 includes a lower base 9 fixed to the front surface of a case 8 of the lifting mechanism 2 and a lower base 9.
And an upper base 1 connected to the lower base 9 so as to be able to adjust a vertical position.
0, a seat portion 3 mounted on the upper base 10, a backrest 5, and left and right armrests 6.

As shown in FIG. 4, the lower base 9 is provided with vertical fixing plates 12 protruding forward on both sides of a mounting plate 11 which is superimposed on the front surface of the case 8 of the lifting mechanism 2 and fixed with bolts. The shaft 14 of the footrest 4 is supported by a bracket 13 protruding below the fixed plates 12, and the footrest 4 is mounted so as to be foldable upward from a horizontal state.

A seat frame 16 is fixed on a horizontally long top plate 15 of the upper base 10, and the seat 3, the backrest 5 and the armrest 6 are placed on the seat frame 16.
The seat 3 and the armrest 6 can be folded upward from a substantially horizontal state.

FIGS. 5 and 6 show an interlocking structure between the seat portion 3 and the armrest 6. Support plates 21 are erected at both ends of the seat frame 16. An arc-shaped upper slot 23 and a lower slot 24 which are coaxial with the bearing hole 22 are provided, respectively.
3 is longer than the lower slot 24.

A seat plate 25 having an L-shaped cross section, which is disposed on the inner surface side of the support plate 21, is fixed to the seat portion 3 at the rear position on both sides thereof, and at the rear end position on the outer surface of the seat plate 25. A mounting shaft 26 that is supported through the bearing hole 22 and a pin 27 that fits into the upper elongated hole 23 are fixed, and the seat portion 3 is substantially horizontal about the mounting shaft 26 supported by the bearing hole 22. The pin 27 can be turned up and down to be able to fold upward from above.
3 will be moved.

The armrest 6 is arranged on the outer surface side of the support plate 21 and is formed by bending a square pipe into an L-shape, and a pair of brackets 28 are fixed to the lower end thereof in an opposing manner. A fitting hole 29 externally fitted to a mounting shaft 26 protruding from the outer surface of the support plate 21, and a first hole protruded toward the support plate 21 and fitted into the upper slot 23
The armrest 6 is rotatably attached to the mounting shaft 26 so as to be in a retaining shape. The first pin 30 moves in the upper elongated hole 23 and the second pin 31 moves in the lower elongated hole 24 during the up-and-down rotation.

Here, the upper slot 23 of the support plate 21
The pin 27 of the seat 3 and the first pin 30 of the armrest 6
Are fitted, and the pin 27 of the seat portion 3 and the armrest 6
The positional relationship of the first pin 30 is such that the first pin 30 is located on the front side in the moving direction of the pin 27 when the seat portion 3 is raised.
Is set to be located.

Therefore, when the seat 3 and the armrest 6 are both lying down substantially horizontally, the pin 27 of the seat 3 is located at the front end of the upper slot 23 as shown in FIG. , Elbow rest 6
The first pin 30 is positioned in the middle of the upper slot 23,
The pin 31 is located at the rear end of the lower elongated hole 24. When the seat 3 is erected from this state, the pin 27 of the seat 3 is moved rearward in the upper elongated hole 23 as shown in FIG. The armrest 6 is moved by pushing the first pin 30 in the same direction to move the armrest 6 around the mounting shaft 26, the first pin 30 is located at the rear end of the upper slot 23, Pin 31 is located at the front end of the lower elongated hole 24, and the armrest 6 is also erected in synchronization with the pin 27, and the overlapping pin 27 and the first pin 30 are located behind the axis just above the mounting shaft 26. , And the seat 3 and the armrest 6 self-hold the upright state. Further, when the seat portion 3 that is erected is turned down, the pin 27
Is separated from the first pin 30, so that the armrest 6 remains upright, and the armrest 6 can be separately operated directly.

The lower slot 24 and the second pin 31 regulate the angle of the armrest 6 to be raised and lowered.

The seat 3 and the footrest 4 are linked by using a cam 32 and a link mechanism 33 so that when the seat 3 is moved up and down, the footrest 4 is simultaneously moved up and down.

As shown in FIGS. 2 and 7, the link mechanism 32 includes a fulcrum pin 3 at an intermediate portion on the front surface of the fixing plate 12.
The swing link 35 pivotally connected at 4, the lower end is pivotally connected to one end of the swing link 35, and the upper end faces the lower part of the seat portion 3, and the other end of the swing link 35 and the footrest It comprises a lifting rod 37 for pivotally connecting the rear part of the table 4.

The upper end of the lifting rod 36 is connected to the upper base 1.
The cam 32 is fixed to the seat 3 at a position facing the upper end of the elevating rod 36. The cam 32 is fixed to the mounting shaft 26 of the seat portion 3, and is attached to the mounting shaft 2 when the seat portion 3 moves up and down.
6 and the upper end of the elevating rod 36 is
Is arranged so as to abut against the surrounding cam surface.

As shown in FIG. 7, the footrest 4 is connected to the lower base 9.
A spring 39 is provided at a portion of the shaft 14 attached so as to be able to move up and down so that one end is locked to the lower base 9 and the other end is locked to the footrest 4.
With this, the rotation elasticity in the folding direction which always stands on the footrest 4 is urged.

The lower end of the lifting / lowering rod 37 in the link mechanism 33 is located at a position rearward of the shaft 14 of the footrest 4 as shown in FIG. The lifting and lowering rod 37 is always pulled down by the upright pivoting elasticity of the footrest base 4 by the spring 39, and the lifting and lowering rod 36 is pushed up by the action of the swing link 35. It is in pressure contact with the cam 32.

As shown in FIG. 7 (A), when the seat 3 falls down substantially horizontally, the large-diameter portion of the cam 32 pushes down the elevating rod 36, and the elevating rod 37 is raised by the action of the swing link 35. And
Pull up the rear of the footrest 4 against the spring 39,
The footrest 4 is turned down substantially horizontally.

When the seat 3 is raised as shown in FIG. 7B, the cam 32 releases the pushing down of the elevating rod 36,
Due to the elasticity of the spring 39, the footrest 4 is automatically erected on the shaft 14 as a fulcrum.

Further, when the seat portion 3 standing upright is turned over,
The lifting rod 36 is pushed down by the cam 32, and the lifting rod 37 rises in the opposite direction to raise the position behind the shaft 14 of the footrest 4, and the footrest 4 falls down on the shaft 14 as a fulcrum. Become.

When the footrest 4 is tilted down, a stopper piece 42 provided at the rear end abuts on the lower portion of the lower plate 9 to support the load applied on the footrest 4.

The chair type stair climbing and lowering device of the present invention is configured as described above. When the user sits on the chair 7 and turns on a switch provided at an appropriate position of the chair 7, the lifting mechanism 2 operates to guide the rail 1 to the guide rail 1. The chair 7 moves along and the stairs A can be moved up and down while sitting.

When the chair 7 is used, as shown in FIGS. 3 and 7, when the seat portion 3 is turned down, the footrest 4 is turned down in conjunction with the seat portion 3 and the armrest 6 is also turned down. The stairs A can be moved up and down while sitting on the floor 7.

When the chair 7 is not in use, the seat 3 is not used.
When the armrest 6 is raised, the armrest 6 and the footrest 4 are also erected, and as shown in FIG. 4, the chair 7 is operated only by the standing operation of the seat 3 only, and the armrest 6 and the footrest 4 are interlocked. When the chair 7 is folded, the amount of protrusion of the chair 7 into the stairs A is greatly reduced, the effective width of the stairs A is not reduced, and the chair 7 does not obstruct a person who walks up and down the stairs A.

[0032]

As described above, according to the present invention, the lifting mechanism that moves along the guide rail is mounted on the guide rail provided along the slope of the stairs, and the chair is attached to the lifting mechanism. In the stair-climbing device, the chair seat, the armrest and the footrest are each foldable so that they can be folded upward from a substantially horizontal state, and the seat, the armrest and the footrest can be folded when the seat is folded. When the chair-type stair-climbing device is not used, the chair seat, armrests, and footrests are folded so that the seat, footrests, and armrests are all folded. Can be performed in a single operation, and the folding operation can be simplified.

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view of a chair-type stair climbing device.

FIG. 2 is a front view of a main part of a chair with cutouts;

FIG. 3 is a side view showing a main part of the chair.

FIG. 4 is a side view showing the above-mentioned folded state.

FIG. 5 is an exploded perspective view showing a main part of the chair.

6A and 6B are enlarged cross-sectional views showing the relationship between a seat portion of a chair and an armrest.

FIGS. 7A and 7B are longitudinal sectional views showing the interlocking relationship between a seat portion of a chair and a footrest;

FIG. 8 is a vertical sectional front view of a conventional chair-type stair climbing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Guide rail 2 Elevating mechanism 3 Seat part 4 Footrest 5 Backrest 6 Armrest 7 Chair 9 Lower base 10 Upper base 12 Fixed plate 21 Support plate 23 Upper slot 24 Lower slot 25 Sheet plate 27 Pin 30 First pin 31 second pin 32 cam 33 link mechanism

Claims (1)

[Claims] 1. A chair-type stair climbing device in which a lift mechanism moving along the guide rail is attached to a guide rail provided along the slope of the stairs, and a chair is attached to the lift mechanism. The part, the armrest, and the footrest are each foldable to be upwardly foldable from a substantially horizontal state, so that the seat part, the armrest, and the footrest can be folded at the same time when the seat part is folded. A chair-type stair climbing and lowering device that is linked to.