JP2500370B2 - Stair lift for people with disabilities - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stair lift for disabled persons, which is used as a welfare device in public facilities such as stations, libraries, city halls, etc. for lifting stairs of wheelchairs for disabled persons.

[0002]

2. Description of the Related Art Stairs and steps at stations are a major obstacle for wheelchairs, which are a general means of transportation for people with disabilities.
Especially in urban areas, there are many high-floor buildings, and not only the above stations but also public buildings such as libraries and city halls, shopping centers, and other places where people with disabilities often use them, do not give sufficient consideration to the movement of people with disabilities. , It considerably limits the opportunities for people with disabilities to participate in society. Considering these points, in order to support the participation of people with disabilities in society, it is urgently necessary to develop a simple system that allows people with disabilities to go up and down stairs.
For example, there is already known a system in which two guide rails installed on the wall of a stairway guide the elevator, and one of the guide rails drives the elevator up and down by a rope or a gear. There is.

It is needless to say that these systems need to be useful for people with disabilities by their intended functions.
At the same time, it is necessary not to interfere with the behavior of healthy people. For that purpose, it is necessary that the fixed installation structure is installed so as not to interfere with the behavior of the healthy person, and the movable equipment can be stored in the storage area such as the back of the stairs when it is not used. In order to popularize it, while satisfying the required moving function, the device is inexpensive and easy to install,
Easy maintenance is also important. However, the proposed moving device does not always satisfy each of these requirements, and an unbalanced load acts to transmit power on one guide rail, which makes it difficult to obtain smooth movement. There was also.

[0004]

The technical problem of the present invention is that it satisfies the above-mentioned conditions, that is, it is of course effective for elevating stairs for persons with physical disabilities, but a fixed installation structure does not affect the behavior of healthy persons. There is no obstruction, mobile equipment can be stored in a place where it will not interfere when not in use, and the device is simple,
An object of the present invention is to provide a stair lift for persons with disabilities, which is inexpensive, easy to install, and easy to maintain.

[0005]

In order to solve the above-mentioned problems, a stair lift for persons with disabilities according to the present invention is provided with two parallel guide rails on the side wall of the stairway in parallel with the inclination direction of the staircase. Then, the engaging legs provided on the lift base are slidably engaged with the two guide rails to maintain the posture of the lift base, and the drive device can be vertically driven along the guide rails. In the above,
Extending radially from a rotation shaft which is rotatably driven by a motor on the protruding elevation frame toward the wall, at the tip of a plurality of arms which rotate to face the wall of the staircase, two of definitive to the wall
Is provided with an engaging element which is engaged with and guided by a drive guide provided between the guide rails of the arm, and when the engaging element of the arm tip engages with the drive guide and rotates, with respect to the rotation axis of the arm. And a guide surface for providing a substantially constant speed movement in the ascending / descending direction of the stairs, and the arm is provided with a retracting means for avoiding contact with the drive guide in the return stroke. is there.

The arm retracting means of the stair lifter tilts the rotation axis of the arm with respect to the wall of the stairs and separates the rotation path of the engaging element at the arm tip from the drive guide of the wall in the return stroke of the arm. It can be configured by.

[0007]

In the above stair lift, when the motor is rotated to raise the lift along the stairs, the armature engaging element engages with the drive guide and moves on the drive guide. Is driven up the stairs,
The lift moves in that direction. Since the rotating shaft of the arm is inclined as the retracting means of the engaging element, the engaging element does not interfere with the drive guide in the returning process of the arm.

Further, in the movement of the lifting table, the lifting table is guided by the guide legs by the engaging legs to maintain its posture, and the driving force acts between the pair of guide rails. No uneven load is applied between the lifter and the shaft 7, and the elevator can be smoothly moved.

Further, in the stair lift, the guide rails, which are fixed installation structures, are in the form of handrails on the stairs, and the drive guides are provided between the pair of handrail-shaped guide rails. Does not interfere with the behavior of healthy people, while the elevator, which is a movable facility,
Since it can be guided to a place where it does not get in the way when it is not used, this also does not hinder the walking of healthy persons. Furthermore, the structure is simple on both the guide rail side and the lifting table side, and relatively high precision is not required, so it is easy and inexpensive to manufacture,
Can be installed.

[0010]

1 and 2 show an embodiment of a stair lift for persons with disabilities according to the present invention. This stair lift is provided with two parallel guide rails 3 and 3 on a wall 2 along the inclination direction of the stairs 1, and along with the guide rails 3 and 3, a wheelchair and a disabled person can be put on board. The elevator 5 is moved up and down so that people with disabilities can easily move up and down the stairs.

The elevator 5 has an engaging leg 7 for slidably engaging the two guide rails 3 and 3 on the wall 2 with an elevating table 6 on which a wheelchair can be mounted to maintain the posture of the elevating table 6. 7, and further includes a driving device for driving the elevating table 6 up and down along the guide rails, which will be described in detail below.

The engaging legs 7 are for simply sliding the guide rails 3 while holding the guide rails 3 and moving the elevating table 6 along the guide rails 3 for driving. It does not have gears. Therefore, it is not necessary to provide a rack or the like for driving the guide rail 3 as well, and the guide rail 3 need only be capable of supporting the load of the elevator 5, so that it can be formed using hard plastic or the like. Therefore, it is possible to eliminate the use of oil and eliminate the risk of soiling the clothes of pedestrians with oil. Further, the guide rail 3 is formed by the pair of engaging legs 7.
The structure in which the elevating table 6 is held in the table facilitates the movement of the elevating machine 5 along the guide rail curved in the plane.

As the driving device, a rotating shaft 9 rotatably driven by a motor 8 provided on an elevating table 6 is used as a staircase wall 2.
To a plurality of drive guides 12 provided on the wall 2 and sequentially engaged with the tips of a plurality of arms 10 that extend radially from the rotation shaft 9 and rotate to face the wall 2. Each of the guided engaging elements 11 is provided. It is desirable that these engaging elements 11 are composed of rotatable rollers.

A large number of drive guides 12 arranged in parallel between the guide rails 3 and 3 on the wall 2 to engage the engaging elements 11 are rotated when the engaging elements 11 at the tip of the arm 10 are engaged. Further, it has a guide surface for imparting a substantially constant speed movement in the ascending / descending direction of the stairs to the rotating shaft 9 of the arm 10. That is, when the arm 10 rotates in a state in which the engaging element 11 in any one of the arms is engaged with one drive guide 12 (the state of FIG. 1), the rotating shaft 9 is stepped by the guide of the engaging element 11 by the drive guide 12. 1
Moving in the up-and-down direction and at least before the engagement element 11 is disengaged from the drive guide 12, the next engagement element 11 engages with and is guided by the next-order drive guide 12, and as a result, the rotation shaft 9 is moved. The guide surface is formed so that the guide surface is always moved in a vertical direction at a substantially constant speed.

When such a drive guide 12 is provided, the engaging member 11 disengaged from the drive guide 12 is engaged with the rotation of the arm 10 in the return stroke for engaging the next drive guide 12. The alloy 11 may come into contact with the drive guide 12. Therefore, the drive device is provided with a retracting means for avoiding contact of the engaging element 11 with the drive guide. As an evacuation means for this arm, in the illustrated embodiment, as clearly shown in FIG. 2, the rotating shaft 9 of the arm 10 is inclined with respect to the wall 2 of the stairs, and the engaging member at the tip of the arm in the return stroke of the arm 10 is engaged. Although the rotation path of 11 is separated from the drive guide 12 of the wall 2, for example, each arm 10 is rotatable in the direction in which it can be retracted from the drive guide 12 at its intermediate portion, and a cam provided on the lifting table 6 side or the like. Thus, it is possible to adopt a configuration in which the protruding / withdrawing of the tip of the arm is controlled.

In the stair lift having the above structure,
When raising the lifting platform 6 along the stairs 1, the motor 8 in the drive device is rotated in the direction of arrow a in the state of FIG. As a result, the engaging element 11 of the arm 10 is moved to the drive guide 1
Since it engages with 2 and moves on the drive guide 12, the rotating shaft 9 of the arm 10 is driven in the direction of rising the stairs,
The lift 6 moves in that direction. In the drive,
Since the rotating shaft 9 is inclined as the retracting means of the engagement element 11, the engagement element 11 does not interfere with the drive guide 12 in the return stroke of the arm 10.

In moving the lift table 6, the lift table 6 is moved.
Is guided by the guide legs 3 by the engagement legs 7 and 7 to maintain its posture, and a driving force acts in the middle of the pair of guide rails 3, 3, so that an eccentric load is applied between the guide rails and the engagement legs 7. Smooth movement of the elevator can be obtained without any action. Further, since the rotation of the motor 8 is directly converted into the linear motion via the drive guide 12, the efficiency is good.
When the elevator is lowered along the stairs, the motor 8 is driven contrary to the above, and the elevator 11 is prevented from slipping down by the engagement of the engaging element 11 with the drive guide 12 and is lowered by gravity.

In the stair lift, since the guide rail 3 which is a fixed installation structure has a handrail shape of the stairs, and the drive guide 12 is provided between the pair of handrail guide rails 3, The elevator 5 which is a movable facility, on the other hand, does not interfere with the behavior of healthy persons.
When not in use, the guide rail 3 can be curved or extended to guide it to a place such as a storage room where it does not get in the way and be stored there. Therefore, the elevator does not interfere with walking of healthy persons and is safe. Furthermore, the structure is simple on both the guide rail side and the lifting table side, and relatively high precision is not required. Therefore, it is possible to easily and inexpensively manufacture and install.

[0019]

EFFECTS OF THE INVENTION According to the stair lift for persons with disabilities of the present invention described in detail above, it goes without saying that it is effective for raising and lowering stairs for persons with disabilities, but a fixed installation structure hinders the action of healthy persons. And the movable equipment can be stored in a place where it does not interfere when not in use, and the device is simple and inexpensive,
Easy to manufacture and install, and easy to maintain.

[Brief description of drawings]

FIG. 1 is a side view of an embodiment of the present invention.

FIG. 2 is a cross-sectional view of an essential part of the embodiment.

[Explanation of symbols]

 1 stairs, 2 walls, 3 guide rails, 5 elevators, 6 elevators, 7 engaging legs, 8 motors, 9 rotating shafts, 10 arms, 11 engaging elements, 12 drive guides.

Claims (2)

(57) [Claims] 1. A pair of upper and lower parallel guide rails are installed on a side wall of a stairway along an inclination direction of the staircase, and an engaging leg provided on a lift is slidable on the two guide rails. In a stair climber that is engaged with the pedestal to maintain the posture of the elevator and can be moved up and down along the guide rail by the drive unit, the drive unit is projected toward the wall and rotated by the motor on the elevator platform. extend radially from the rotation axis to be driven, the tips of the arms to rotate to face the wall of the stairs, is guided to it engages with the drive guide provided between two guide rails definitive in the wall With an engaging element
The drive guide is provided with a guide surface that gives a substantially constant speed movement in the ascending / descending direction of the stairs with respect to the rotation axis of the arm when the engaging member at the tip of the arm is engaged and rotates, and the arm is provided with a return stroke. The stair lift for persons with disabilities, characterized in that it is configured by providing a retracting means for avoiding contact with the drive guide in. 2. The stair lift according to claim 1, wherein as a retracting means of the arm, a rotation axis of the arm is inclined with respect to a wall of the stairs, and a rotation path of the engaging element at the tip of the arm in a return stroke of the arm is defined as above. A stair lift for people with disabilities characterized by being separated from the drive guide on the wall.