JPH0743484U - Ladder - Google Patents

Abstract

(57) [Summary] [Purpose] When using a ladder on sloping or uneven terrain, ensure its safety. [Structure] Both legs of the ladder are provided with auxiliary legs that can relatively move in and out.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a commonly used ladder.

[0002]

[Prior art]

 The ladder used in the past had both legs of the ladder fixed to exactly the same length.

[0003]

[Problems to be solved by the device]

 Conventionally used ladders have the same length on both legs, so there is no problem if the installation location is horizontal, but in the case of sloping ground or uneven terrain, force is applied to only one leg. The ladder was dangerous to tilt.

For this reason, the shorter leg has been padded or the auxiliary leg has been connected, but in both cases, it is unavoidable and involves some danger.

The present invention was devised for the purpose of solving these drawbacks of conventional ladders.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention is provided with auxiliary legs which are connected to both legs of a ladder with connecting rods and which can be relatively moved in and out.

[0007]

[Action]

 When using a ladder on a sloping land or an uneven ground, the auxiliary legs provided on both legs are stretched depending on the unevenness of the surface of the land when the ladder is leaned against the land.

[0008]

【Example】

 As shown in the perspective views of FIGS. 1 and 2, auxiliary legs 4 and 5 which are connected to both legs 1 and 2 of the ladder by a connecting rod 3 and which can be relatively moved in and out are provided. 6 and 7 are set screws for fixing the auxiliary legs.

[0009]

[Effect of device]

 Since the present invention is constructed as described above, the following effects are produced.

First, the setscrews 6 and 7 for fixing the auxiliary legs 4 and 5 are loosened, and the ladder is leaned against the place of use while the auxiliary legs can freely move in and out.

In this case, the auxiliary leg automatically expands and contracts according to the unevenness of the surface of the land to be used, and the ladder leg is used to the land of the land even if the surface of the land is inclined or uneven. Stick to the surface.

When the setscrews 6 and 7 are tightened in this state, the auxiliary legs 4 and 5 are fixed to the ladder legs 1 and 2, so that the ladder can be used quickly and safely.

[Brief description of drawings]

FIG. 1 is a sectional view of the present invention and a usage state diagram on a sloping ground.

FIG. 2 is a perspective view of the present invention.

Claims (1)

[Scope of utility model registration request] 1. A ladder characterized in that both legs of the ladder are provided with auxiliary legs that can relatively move in and out.