JPS59213887A - Joint leg for stepladder - 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 If the ground surface of a conventional stepladder is not flat, for example on stairs or on a slope, the stepladder cannot be stably stood upright.

The present invention relates to an integrated leg for a stepladder that allows the stepladder to be stably erected on an upright store 1 at any location, and the accompanying drawings showing one embodiment are 1'! The detailed description in terms of at is as follows.

Stepladder additional leg A will be explained.

Stepladder addition 1llj A is a combination of two pieces.

The arcuate leg (1) is equipped with a stepladder support metal fitting (2) that supports the stepladder (2).
3) is provided so as to be slidable along the arc of the arc leg (1).

The stepladder support fitting (3) in Fig. 1f11 has arms (5) vertically placed on the left and right sides of the horizontal base pipe (4), and arcuate legs (1) are attached to the lower end of this vertical pipe (5). A β-shaped guide piece (6) is attached, a tightening bolt (7) is passed through this guide piece (6),
At the bottom of the vertical pipe (5), attach the leg rod (2) of the stepladder (2) toward the outside.
A support box (9) is attached to support the lower part of the support box (9), and a support bolt 00) is passed through the middle of this support box (9), and draw-out pipes are installed on both sides of the horizontal base pipe (4). Insert it so that it can slide freely, and attach 11,'dl n (
8) is attached, a support bolt α4 is provided on this support pipe αl, and a fixed pole (15) is provided on the upper end of the horizontal base pipe (4).

This stepladder support fitting (3) is provided with a fixing fitting α6) that is fixed to the arcuate leg (1) at a desired position.

The fixing fittings in the drawing (1 (i+) is a presser foot (17) that presses the arcuate leg (1) from below, with an L-shaped handle (lE9) attached vertically,
This L-shaped handle σ8) is the receptacle part 09 provided at the base of the receiver C1! Natsuto G attached to the bottom of I! υ and turn the L-shaped handle a to release the presser foot (17).
◇ In the figure, code (2) is the reinforcing crosspiece, and (1) is the spanning crosspiece.

Conventional stepladders are designed to be used standing upright on level ground, so the lengths of the four leg bars are the same.

For this reason, if you have to use the product on an uneven surface, such as on stairs or on a slope, you may not be able to stand upright, or you will be standing in a shaky position, making it unstable and dangerous to climb on top of it. Sometimes even.

The present invention solves these drawbacks, and as described above, the stepladder support fitting (3) that supports the stepladder (2) is slidable along the arc of the arcuate leg (1) on the arcuate leg (1). Attach the arcuate leg (1) at the desired position to this stepladder support metal fitting (31).
For example, when using on stairs, the arcuate leg (1) is grounded on the stairs, and then the stepladder support bracket (3) is attached to the arcuate leg (1) so that it can slide freely.
Release the fixing bracket 06), slide the stepladder support bracket (3), and tighten the fixing bracket ←e at the position where the horizontal base pipe aυ is in a horizontal state.
3) and place the stepladder (2) on the stepladder support bracket (3).
i″j, then even if there is a difference in level, the stepladder (2) can be installed upright just like on level ground by sliding the stepladder support (3).

At this time, since the stepladder support metal fitting (3) is equipped with a fixing metal fitting to fix it at the desired position, the horizontal base pipe (4) of the stepladder support metal fitting (3) is installed.
If you slide the stepladder to a horizontal position and then tighten and fix the stepladder support bracket (3) using the fixing bracket (L6), the stepladder (2) will no longer wobble unstablely and will be securely held in an upright position. This means that it can be erected stably.

Furthermore, the four leg rods (8) of the stepladder (2) are always in contact with the ground through the arcuate legs (1), just like on flat ground, so it is stable without wobbling when used on flat ground. This means that it can be installed upright, making it easy to climb up and work on it, just like a stepladder set up on level ground.

Moreover, the present invention does not provide a slideable arcuate leg (1) at the bottom of the stepladder (2), but a stepladder support fitting (3) is slidably provided on the arcuate leg (1), and the stepladder support fitting (3) is slidably provided on the arcuate leg (1). ) to support the stepladder (2), so I purchased two sets of stepladder extension legs A and used the stepladder (2) on hand.
It can be used in combination with step 2), and there is no need to go to the trouble of purchasing a stepladder (2), demonstrating excellent practicality.

[Brief explanation of the drawing]

FIG. 1 is a perspective view, the second figure is a sectional view of the fixing fitting, and FIG. 3 is a partially cut away front view. A--Additional stepladder legs, (1)...Circular legs, (2)...
Stepladder, (3)...Stepladder support metal fittings, (tEil...Fixing metal fittings.

Claims (1)

[Claims] Stepladder support fittings for supporting the stepladder are provided on the arcuate legs so as to be slidable along the arc of the arcuate legs, and the stepladder support fittings are provided with fixing fittings to be fixed to the arcuate legs at desired positions.Two stepladder extension legs A are provided. An integrated leg for a stepladder characterized by being combined into a set.