JPH0114617Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention relates to a stair lifting device that is attached to elevator stairs in subways, etc., and is particularly applicable to stairs that can be used to carry disabled or sick people in wheelchairs up and down the stairs. This relates to a lifting device.

Conventional technology Conventionally, there are various types of stair lifting devices installed on elevator stairs such as subways, such as a suspension type that is suspended from the ceiling of the elevator stairs, and a side drive type that goes up and down along a rail installed on the side wall. being developed. In the case of the side drive type, a wheelchair pallet is foldably attached to the bottom of the traveling carriage. When in use, the wheelchair pallet can be opened horizontally to carry the wheelchair, and when not in use, it can be folded upward and stored. There is. When opening the wheelchair pallet from the stored state, the drive unit operates at a low speed, so that even if there are people or obstacles nearby, they can be evacuated or removed safely. However, in consideration of an emergency, it is required to be able to stop the deployment of the wheelchair pallet if it comes into contact with a person's body or an obstacle while the wheelchair pallet is being deployed.

Purpose of the invention The object of this invention is to provide a side drive type stair lifting device that can detect obstacles and stop the unfolding when a foldable wheelchair pallet is unfolded into a loaded state.

Structure of the invention In order to achieve the above object, this invention attaches a drive device to the traveling carriage to open and close the wheelchair pallet, absorbs the impact when the lower surface of the wheelchair pallet comes into contact with an obstacle, etc., and at the same time sends a stop signal to the drive device. This is a side drive type stair climbing device equipped with a bottom cover that has a detector.

Embodiment This invention will be explained below based on the drawings of the embodiment. In the figure, 1 is the upper guide rail, 2
are lower guide rails, which are provided parallel to the side wall B of the staircase A. Reference numeral 3 denotes a rack gear having teeth on its lower side, and is provided on the upper guide rail 1. Reference numeral 4 denotes a traveling carriage, which has an upper guide roller 5 and a lower guide roller 6 rotatably attached to its upper and lower ends, and can roll onto an upper guide rail 1 and a lower guide rail 2 via these guide rollers 5 and 6. engaged. Reference numeral 7 denotes a wheelchair pallet on which a wheelchair is mounted, and is foldably attached to the lower part of the traveling carriage 4 by a hinge mechanism 8. A power cylinder 9 is attached to the traveling carriage 4, which opens and closes the wheelchair pallet 7 via an actuating rod 10, and maintains the wheelchair pallet 7 in a horizontal position when the wheelchair is loaded, and when not in use, it moves along the traveling carriage 4. Hold in storage position. Reference numeral 11 denotes a drive motor fixed to the traveling carriage 4, which drives the upper guide roller 5 through an intermediate gear 12 that transmits torque.
The drive gear 13 is connected to a drive gear 13 provided coaxially with the rack gear 3, and the drive gear 13 meshes with the rack gear 3.
A side protector 14 is foldably attached to the outer side of the wheelchair pallet 7, and protects the loaded wheelchair W along with front and rear handrails 15 and 16 foldably provided on the traveling carriage 4. do. 17 is a carriage cover attached to the traveling carriage 4;
18 is a guide rail cover provided on the side wall B. An operation panel 19 is provided on the upper and lower end side walls of the staircase A.

The wheelchair pallet 7 has a structure in which a lower surface cover 21 is provided on the lower surface side of an underframe 20. The lower cover 21 is fixed to the inner side of the underframe 20, and is attached to the outer side by an elastic body 22 such as a coil spring. Therefore, the three sides of the lower cover 21 excluding the inner side are movable relative to the underframe 20. Reference numeral 23 denotes a micro switch, which is connected to the control section of the power cylinder 9, and is fixed to the underframe 20 side, and the switch is opened and closed by vertical movement of a dog 24 provided on the lower cover 21 side. It will be done.

When using the stair lift device configured as described above, the wheelchair pallet 7 is opened and set at the loading position using the operating panel 19 provided on the side wall B at one end of the stairs A. As shown in FIG. 3, if an obstacle C such as a person's body or a part of the wheelchair comes into contact with the lower cover 21 while the wheelchair pallet 7 is being deployed,
The elastic body 22 is compressed and absorbs the impact. At the same time, dog 24 operates micro switch 23 as a detector. As a result, the operation of the power cylinder 9 is automatically stopped, and the lowering of the wheelchair pallet 7 is stopped. When the lower part of the wheelchair pallet 7 is restored to a safe state, the deployment is completed and the wheelchair W is loaded. By operating a control lever (not shown) on the machine, the drive motor 11 is activated and the drive gear 1 is
3 rotates along the rack gear 3 to advance a traveling carriage 4 supported by guide rollers 5, 6. When the traveling carriage 4 reaches the other end of the stairs A, the traveling carriage 4 is stopped by returning the operating lever on the machine to neutral. The wheelchair W is lowered from the wheelchair pallet 7, and the wheelchair pallet 7 is folded into the storage position using the operation panel 19 on the wall.
Finish climbing stairs.

Effects of the device As explained above, this device is equipped with a drive device that opens and closes the wheelchair pallet on the traveling carriage, and the underside of the wheelchair pallet absorbs the shock when it comes into contact with an obstacle, etc., and at the same time sends a stop signal to the drive device. Since this is a side-drive type stair lift equipped with a bottom cover with a detector, in the unlikely event that the wheelchair pallet comes into contact with a person's body or an obstacle while the wheelchair pallet is being deployed, the wheelchair pallet will automatically deploy. This has the effect of making it possible to safely operate the stair lift device.

[Brief explanation of drawings]

The figures show an embodiment of this invention; FIG. 1 is an overall perspective view of a stair lifting device installed on a staircase, FIG. 2 is a vertical cross-sectional view of the stair lifting device, and FIG. 3 is a sectional view of a main part. 1... Upper guide rail, 2... Lower guide rail, 3... Rack gear, 4... Traveling carriage, 7... Wheelchair pallet, 9... Power cylinder, 20... Underframe, 21... Lower surface Cover, 22...
...Elastic body, 23...Micro switch.

Claims (1)

[Scope of utility model registration request] Upper and lower guide rails are provided parallel to the upper and lower side walls of the staircase, rack gears are provided parallel to the guide rails, and upper and lower guide rollers provided at the upper and lower ends of the stairs are connected to the upper and lower guide rails. A traveling carriage rotatably engaged with and supported by a rail, a wheelchair pallet attached to a lower portion of the traveling carriage, a drive gear attached to the traveling carriage meshing with the rack gear, and a drive device thereof. A stair lifting device comprising: a drive device for opening and closing the wheelchair pallet is attached to the traveling carriage; a lower surface of the wheelchair pallet absorbs a shock when it comes into contact with an obstacle, and at the same time the drive device stops the wheelchair pallet; A stair climbing device characterized by comprising a lower cover having a detector that sends out a signal.