JPH05256077A - Stepladder - Google Patents

Abstract

PURPOSE:To make it possible to easily carry a stepladder together with tools, materials and others by providing casters to the lower parts of one of a pair of bearing steps of the stepladder, and loading a collapsible load receiving platform on the lower parts of the other of them. CONSTITUTION:Casters 3 and 3 are provided to the lower parts of bearing steps 1a and 1a. While, a load receiving platform 4 is provided to the lower parts of bearing steps 1b and 1b. The load receiving platform 4 is fixed to an overhanging position in a state to close a stepladder A, tools, materials and others are mounted on the load receiving platform 4, and the upper part of the stepladder A is held by the worker to incline it towards the casters 3 side to move the stepladder A. According to the constitution, the stepladder can be speedily and safely moved, and the efficiency of the whole work can be promoted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stepladder used at a construction site or the like.

[0002]

2. Description of the Related Art Conventionally, a pair of ladder-shaped support legs are pivotally supported at their upper portions, and they are spread and fixed in an inverted V shape so that it is possible to climb the stepladder and perform work at a high position. The stepladder is known.

[0003]

However, when carrying out work at a high position, it is necessary to carry the stepladder, tools and materials necessary for the work to the site, and since the stepladder is long, a handcart or the like is required. It was difficult to carry them on the table at the same time, and the stepladder was often carried separately. When carrying the stepladder and other materials together, it was very heavy and the workability was also reduced.

[0004]

The problems to be solved by the present invention are as described above, and in order to solve the problems, in a stepladder which is provided with a pivotal support portion at the upper part and is spread in an inverted V-shape, A caster is provided on one lower part of the pair of support legs, and a foldable luggage cradle is attached to the lower part of the other support leg.

[0005]

The function of the present invention will be described. According to the above configuration, when the luggage cradle is extended with the stepladder closed, the luggage cradle is locked against the stopper and can be maintained at that position, and work materials and tools are placed on the luggage cradle. The supporting leg can be used as a substitute for the backing plate, and the worker can raise the upper part of the stepladder to raise the caster, and the caster can be run on the caster, and carry the luggage to the site. Can be done.

[0006]

The problems to be solved and the means for solving the problems of the present invention are as described above. Next, the concrete constitution of the present invention will be explained with reference to the accompanying drawings. 1 is an overall perspective view of the present invention, FIG. 2 is a perspective view of a caster attached, FIG. 3 is an enlarged perspective view of a luggage cradle, FIG. 4 is a partial front view of the luggage cradle, and FIG. 5 is a front view showing a moving state. 6 is a side view showing a use state during work.

The overall structure of the present invention will be described with reference to FIG. The stepladder A of the present invention is a support leg 1a that is symmetrically arranged.
The upper end of 1b is pivotally connected, the supporting legs 1a and 1b are formed in a ladder shape, the upper end is a top plate 1d, and a pivotal support portion is provided at the ends of the top plates 1d and 1d. The width stop 10 is pivotally supported on the front and rear surfaces of the upper portion of the support leg 1a (or 1b), and the support leg 1 on the other side is supported.
A locking portion is provided at the same height position of b so that the end of the width stop 10 can be locked and fixed, so that the pivotal support portion can be spread around the center for stable installation.

Casters 3 are provided on the lower portions of the support legs 1a and 1a, respectively, and as shown in FIG. 2, through holes 1c and 1c are formed in the lower portions of the support legs 1a and 1a in the front-rear direction. On the other hand, the U-shaped fixing metal fittings 3b, 3b of the caster 3 have through-holes 3 corresponding to the through-holes 1c, 1c.
The holes c and 3c are bored, and the both are fitted and fixed by the bolts 5.5 and the nuts 6.6. 3a is a caster roller, and 13 is a rubber cap for fixing the support leg 1 to the scaffold.

Further, on the lower part of the other support leg 1b, 1b,
As shown in FIGS. 3 and 4, a luggage cradle 4 is provided, and the luggage cradle 4 has a width to be attached to the inside of the supporting legs 1b and 1b of the stepladder, and the supporting frames 4b and 4 are provided on both sides.
b is formed, the support rods 4c and 4c are rotatably supported at one end of the support frames 4b and 4b to fix the outer side to the support legs 1b and 1b, and an urging spring is provided inside the support rods 4c and 4c. 8 and 8 are fitted on the support spring 4
The luggage cradle 4 is housed in the support leg 1b by interposing between the c and 4c and the support frames 4b and 4b so as to urge the luggage cradle 4 to rotate toward the support legs 1b and 1b. I am trying. Then, the stopper 4 is provided outside the support frames 4b and 4b so as not to rotate further than the support leg 1b.
d. 4d are provided, and the stopper 4d is made of iron and a magnet 11 is provided on the support leg 1b against which the stopper 4d abuts so that there is no positional deviation. However, the magnet may be provided on the stopper 4d, or the magnet may be provided on the lateral bar 12 of the support leg 1b.

Then, in order to fix the luggage cradle 4 to the projecting position, pins 15 and 15 for restricting downward rotation are provided on the inside of the support legs 1b and 1b so as to extend the width of the support frame 4b. The stop pins 14 and 14 are slidably pierced and are biased in the protruding direction by springs 16 and 16. However, the luggage cradle 4 is not limited to the above configuration as long as it can be locked in the projecting position.

With this construction, if the retaining pins 14 and 14 are pulled and the luggage receiving plate 4a is applied to the pins 15 and the retaining pins 14 are released, the retaining pins 14 can be fixed in the projecting position, as shown in FIG. In addition, the construction tool B or the like can be placed on the luggage cradle 4 in a state in which the legs are closed, and the operator can move and carry the top of the stepladder A by inclining it toward the caster 3 side. Then, when the luggage is unloaded and the locking pins 14 and 14 are pulled, the luggage cradle 4 is rotated upward by the biasing spring 8 and the magnet 1
It is fixedly attached to 1/11 and stored. In this state, the luggage receiving plate 4a has a length that does not project upward from the lower horizontal bar 12 so that the operator does not get in the way when moving up and down for work. And the supporting leg 1a
When 1b is spread in an inverted V shape and fixed with the width stopper 10, it can be used as a normal stepladder as shown in FIG.

[0012]

Since the present invention is configured as described above, it has the following effects. That is, since the casters are attached to the stepladder, they can be moved easily without having to lift them, and simple construction tools can be placed on the luggage cradle and transported, and can be easily stored during work. Therefore, it is possible to move the stepladder safely and swiftly, and the efficiency of the whole construction is greatly improved.

[Brief description of drawings]

FIG. 1 is an overall perspective view of the present invention.

FIG. 2 is a caster mounting perspective view.

FIG. 3 is an enlarged perspective view of a luggage cradle.

FIG. 4 is a partial front view of a luggage cradle.

FIG. 5 is a front view showing a moving state.

FIG. 6 is a side view showing a usage state during work.

[Explanation of symbols]

 A stepladder 1a, 1b support leg 3 caster 4 luggage cradle

Claims (1)

[Claims] 1. In a stepladder having a pivotal support provided on an upper part and being spread in an inverted V shape for use, a caster is provided on one lower part of a pair of support legs and a foldable luggage cradle is provided on a lower part of the other support leg. A stepladder that is equipped with.