JP3020499U - Ladder - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a ladder that is safe and easy to move up and down by inflating outwardly on each horizontal rail of the ladder, without inclining the body, less injuring when going up and down. [Construction] A ladder in which both side girders 1 and 1 are connected to each other by a plurality of cross rails 2 for hanging, and a central portion of each cross rail is curved outward and both ends thereof are connected to both side cross girders.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a ladder configured by connecting both side girders and a plurality of cross rails between them to connect them.

[0002]

[Prior art]

 In a conventional ladder, the ladder is simply formed by connecting both side girders and a plurality of horizontal girders horizontally arranged between them to connect them with each other.

[0003]

[Problems to be solved by the device]

 By the way, when a worker moves up and down using the ladder as described above, the worker must lean back from the ladder and move up and down. You may feel dangerous.

The present invention has been made in view of the above problems of the prior art. The purpose of the present invention is to bend each lateral rail of the ladder outward to bend the body. The goal is to provide a safe and easy-to-lift ladder that is less likely to be injured when going up and down.

In addition, the present invention aims to provide a ladder that can be conveyed by people and people in an emergency.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the ladder according to the present invention is characterized in that the central portion of each horizontal rail is curved outward and both ends thereof are connected to both side girders.

Further, the present invention is characterized in that the central portion of each horizontal rail is curved downward and outward so that both ends thereof are connected to both side girders.

Further, it is characterized in that the uppermost horizontal rail is formed in a linear shape and a reel around which a rope is wound is arranged in the central portion.

[0009]

[Action]

 Since the ladder is constructed as described above, this ladder is erected at a desired location and the operator uses it to move up and down. Since it is curved and inflated outward when viewed from the lifter's side, there is no protrusion of the cross rail to the worker side, so even if the worker does not bend his body during lifting, The knee rarely abuts the cross rail, and the ladder is not shaken.

Further, when the central portion of each of the horizontal rails is bent downward and outward, the horizontal rail does not project to the worker side, so that the worker does not bend when moving up and down. However, not only is the worker's knee less likely to come into contact with the cross rail and the ladder will not be shaken, but also the worker's foot can be stably and reliably placed on the cross rail when moving up and down.

Further, when the uppermost horizontal rail is formed in a straight line and a reel around which the rope is wound is arranged, the rope is used to prevent an object, a person, etc. It can be transported to the other side, and at that time, since the other cross rails are curved outward at least, there is little obstruction.

[0012]

[Mode for Carrying Out the Invention]

 FIG. 1 is a perspective view of a ladder according to an embodiment of the present invention, and FIG. 2 is a plan view thereof.

In the figure, reference numeral 1 is a side girder, which is located on both sides of a foot railing cross rail 2, and a plurality of the horizontal rails 2 are arranged between the side rails 1 and 1. Each of the horizontal rails 2 has its central portion curved and inflated outward as viewed from the lifter side, and both ends thereof are connected to the side girders 1, respectively.

Since the ladder is configured as described above, the ladder is erected at a desired position and the worker uses it to move up and down. Since the central part is curved and inflated outward when viewed from the lifter side, there is no protrusion of the cross rail 2 to the worker side, so the worker does not bend when moving up and down. However, the operator's knees rarely come into contact with the cross rail 2 and the ladder does not rock.

When the center portion of each of the horizontal rails 2 is further curved slightly downward, the horizontal rails do not project to the worker side, so that the worker does not turn himself up and down during lifting. Even if the worker does not touch it, the worker's knees rarely come into contact with the rung, which may cause the ladder to sway. It fits and is stable and reliable.

Further, when the uppermost horizontal rail 2'is formed in a straight line and the reel 3 around which the rope is wound is arranged, the rope is used to make an object or a person Etc. can be transported in an urgent manner, and at that time, the other cross rails 2 are curved at least outwardly, so there is little obstruction, and it is convenient when raising or lowering an object or in an emergency disaster.

[0017]

[Effect of device]

 According to the ladder according to the present invention, the center portion of each cross rail is curved outward and both ends thereof are connected to both side girders. It is a safe ladder that can be lifted up and down naturally without warping, the operator's knees rarely contact the cross rails, and the ladder does not sway.

Further, when the central portion of each of the horizontal rails is slightly curved further downward, the horizontal rail does not project to the worker side, so that the worker does not bend when moving up and down. Not only that, the worker's knees rarely come into contact with the cross rail, and the ladder is not swayed. The ladder is stable and reliable, and is a safer ladder.

Further, when the uppermost horizontal rail is formed in a straight line and a reel around which the rope is wound is arranged, the rope is used to make things, people, etc. urgent. Since the other cross rails are bent outward at least when doing so, they are less likely to get in the way, making it a convenient ladder when lifting or lowering objects or in an emergency disaster.

[Brief description of drawings]

FIG. 1 is a perspective view of a ladder according to an embodiment of the present invention.

FIG. 2 is a plan view thereof.

FIG. 3 is a front view thereof.

[Explanation of symbols]

 1 side girder 2 cross rail 2'top cross rail 3 reel

Claims (3)

[Scope of utility model registration request] 1. A ladder constructed by connecting both side girders and a plurality of leg crossing crosspieces to each other, wherein the center of each crosspiece is curved outward and both ends thereof are connected to both side girders. A ladder to do. 2. In a ladder constructed by connecting both side girders and a plurality of leg crossing crosspieces between them, the center portion of each crosspiece is curved downward and outward so that both ends thereof are connected to both side girders. Characteristic ladder. 3. The ladder according to claim 1, wherein the uppermost horizontal rail is formed in a straight line, and a reel around which a rope is wound is arranged in the central portion.