JPS6087184A - Lifting gear for stair - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a stair lifting device used for raising and lowering a wheelchair.

[Prior art]

First, let us explain the conventional stair lifting device with reference to Figs. 1 to 4. In Figs. A pair of upper and lower rails are arranged vertically, 3 is movably engaged with the rail 2, and a carrier for carrying a wheelchair, etc. 4 is fixed parallel to the rail 2 over the entire length of the rail 2. rack, 5 is a pinion that is always engaged with rack 4, 6
7 is a lifting electric motor which is fixed to the carrier 3 and has the pinion 5 fitted and fixed to the drive shaft 6a, and 7 is a turning wheel 2 of the carrier 3.
This is a contact detector located on the side edge. As shown in FIG. 4, the contact detector 7 has an upper end portion of a contact plate 9 pivotally attached to a shaft 8 fixed to the upper end portion of the carrier 3, and comes into contact with a recess 3a of the carrier 3 on the side opposite to the rail 2. A compression spring 10 is interposed between the plate 9 and the plate 9. A hook part 9k is formed on the back surface of the upper part of the contact plate 9, and a stopper 11 is formed on the upper part of the carrier 3, so that the rotation range of the contact plate 9 is limited by the engagement of the hook part 9a and the stopper 11. It is composed of 12 is the contact plate 9
This is a limit switch that comes into contact with the rotation of the carrier 3 and operates.This switch 12 is installed at the bottom of the recess 3& of the carrier 3, and when the limit switch 12 operates, the operation of the carrier 3 is stopped to ensure safety. .

When the 'fc stair lift device configured as described above is used, the user, such as a physically handicapped person, rides on the carrier 3 along with the wheelchair 13 at one end of the top and bottom of the stairs 1, and the electric motor 6 for lifting is energized. and the binion 5 which is meshed with the rack 4
By driving, the carrier 3 ascends and descends the stairs 1f and
The carriage 3 is stopped at the other upper and lower ends of the carriage 3, and the wheelchair 13 and its user are lowered from the carriage 3.

Additionally, if a passerby going up or down the stairs 1 accidentally contacts the contact plate 9 while the stair lift device is in operation, the contact plate 9 rotates around the shaft 8, operating the limit switch 12, and 3 will stop immediately.

However, in this stair lift device, as shown in FIGS. 3 and 4, if a passerby touches the vicinity of the shaft 8 of the contact plate 9, the contact plate 9 does not rotate, so the limit switch 12 does not operate, the carrier 3 continues to operate, and if a passerby falls at this time, there is a risk of being caught in the carrier 3.

[Summary of the invention]

This invention attempts to solve the above-mentioned drawbacks of the conventional ones, and by improving the contact plate of a contact detector and forming a concave part at the upper end thereof and a convex part below the concave part, The purpose of this invention is to provide a stair climbing device in which the contact detector operates reliably and is highly safe.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIG.

In FIG. 5, the same reference numerals as in FIGS. 1 to 4 indicate the same or corresponding parts. The contact plate 9 contacts the stopper 11 with a spring force, and the contact plate 9 has a recess 9 located on the rail 2 side at the upper end from the shaft 8 to the hook 9a.
A convex portion 9c protruding toward the side opposite to the rail 2 is formed in the lower part of the concave portion 9b, and a step 9d is provided between the concave portion 9b and the convex portion 9C. The convex portion 9C is provided within a range where the contact plate 9 can rotate about the shaft 8 when touched by a passerby.

In the stair lift device of the embodiment configured as described above, if a passerby or the like accidentally touches the contactor T while driving, the contact plate 9 will contact the convex portion 9C of the contact plate 9. Immediately rotate to operate the limit switch 12 and move the carrier 3.
operation has stopped and is safe. At this time, the contact plate 9
The concave portion 9b near the shaft 8 is not touched by passersby.

The configuration and operation of this embodiment other than those described above are as follows.
This is similar to the stair lifting device shown in FIGS. 1 to 4.

〔Effect of the invention〕

As explained above, the present invention provides a rail disposed along the longitudinal direction of a staircase, a carrier that is engaged with the rail and moves up and down, and a contact plate provided on the side of the rail of the carrier. In a stair lifting device equipped with a contact detector that stops the movement of the carrier at a point, a recess located on the rail side is provided at the top of the contact plate whose upper end is pivotally attached to the carrier, and a recess located on the side opposite to the rail from the recess Since the protruding convex part is formed below the concave part, even if a passerby passing by on the stairs comes into contact with the carrier, the contact plate will operate reliably and the contact detector will operate to stop the carrier. Therefore, there is an effect that a highly safe stair climbing device can be realized.

[Brief explanation of drawings]

Fig. 1 is a schematic side view showing a conventional stair lift device, Fig. 2 is an enlarged side view of the main parts, Fig. 3 is an enlarged front view of the same, and Fig. 4 is an enlarged cross section taken along the line IV-IV of Fig. 2. FIG. 5 is a view corresponding to FIG. 4 showing a stair lift device according to an embodiment of the present invention. 1...Stairs 2...Rail 3...Carrier 7...
・Contact detector 8...Axis 9...Contact plate 9b...
・Concave part 9C...Convex part 12...Limit switch. In addition, the same parts or corresponding parts in the figures are indicated by the same reference numerals. Agent Dai-Iwa Masuo (and 2 others)! 4m5 3t 6 Illustration procedure amendment (voluntary) 1. Indication of the case: Japanese Patent Application No. 1938-15-1982, title of the invention: Stair lift device 3, representative of the person making the amendment: Hitoshi Katayama Department 4, agent 5, subject of amendment (1) drawing 6, content of amendment ( 1) Correct the drawings in Figures 1 and 5 as shown in the attached sheet. 7. Attached documents (1) Amended drawings 1 suitability 1 illustration 5 illustrations

Claims (1)

[Claims] A rail 2 disposed in the longitudinal direction of the staircase 1. The carrier 3 is engaged with the rail 2 and moves up and down, and the carrier 3 is moved up and down by contact with the contact plate 9 provided at the counter rail 2@ part of the carrier 3.
In the stair climbing device equipped with a contact detector T for stopping the movement of the contact plate 9, the upper end of which is pivotally connected to the carrier 3.
A recess 9b located at the rail 211tl is provided in the upper part of the rail 211tl,
A stair lift device characterized in that a convex portion 9C that protrudes from the concave portion 9b toward the opposite side of the rule 2 is formed below the concave portion 9b.