JPS6129919Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a leg member for a ladder or stepladder, which is used at construction sites, railway line construction, etc., and is used as a foothold for climbing to high places.

[Prior art]

Generally, ladders and stepladders are used with non-slip rubber caps fitted to the bottom ends of the ladders as leg members, but these leg members may have a bottom that runs along the ground surface since the ladder is used while leaning against the ladder. Are known.

[Problem that the invention attempts to solve]

However, although this type of ladder leg is effective on a relatively flat surface, it becomes unstable when leaning on a slope, for example in a direction other than the slope, as the ground contact area becomes small. There are inconveniences such as troublesome handling and friction. In particular, when the ground is placed on a gravel surface such as at a route construction site, it is unstable and does not help prevent slipping, and when fixed by plunging into the gravel surface, the ground is leveled because of the flat bottom surface. There were many inconveniences such as troublesome handling.

The present invention eliminates these conventional drawbacks and provides a simple and low-cost ladder leg that can provide stable grounding even when the ground surface is poor, even at an angle, and can be accurately and reliably fixed to prevent slipping over a wide range. The purpose is to

[Means for solving problems]

The present invention is a ladder consisting of a support column with treads attached at intervals, and is provided with a non-slip leg member made of an elastic material at least at the lower end of the support column, in which the front and rear surfaces of the leg member are It is formed into a shape that protrudes from the upper end, and its left and right sides are formed with slopes with the lower ends shaved off, and the bottom surface is formed with slopes with horizontal grooves that match the leaning angle of the ladder. This ladder leg is characterized in that a hollow fitting hole is provided, and a stator passing through the leg member is detachably fitted and fixed to the column.

In addition, in this specification, the surface along the direction parallel to the treadle 2 is referred to as the front and rear surfaces, and the surface along the direction perpendicular to the treadle 2 and the support 1 is referred to as the left and right surfaces.

〔Example〕

In the illustrated example, the leg member 3 is made of an elastic material such as high-quality rubber or synthetic resin and has a cylindrical shape with a bottom, and its front and rear surfaces are each formed into a slope 18 that tapers toward the lower end. The left and right sides each have slopes 9, 9 with a shaved shape at their lower ends.
However, the slopes 9, 9 are abutted at an abutting portion 19. The bottom surface is a slope 4, 4 with a slope at an angle of 10 to 30 degrees, preferably 15 to 20 degrees with respect to the ground plane, and the butt part of both slopes 4, 4 is formed into a protruding corner 5 at approximately the center. The slope 4 has a protruding surface.
At least one or two or more lateral grooves 7 are provided at intervals in the horizontal direction, but the grooves may be formed in a grid or dice shape in the vertical or diagonal direction. However, it is possible to choose to form a convex non-slip surface. In addition, the leg member 3 has a U
A fitting hole 6 is drilled into which the support 1 of various shapes such as C-shape, C-shape, L-shape, O-shape, etc. is fitted. Although the drain hole 8 which opens and communicates is provided as a horizontal hole, it may also be provided as a vertical hole that opens in the horizontal groove 7 or the bottom surface.

Furthermore, in order to attach and fix the stator 11 to the ladder support 1, the leg member 3 is provided with a mounting hole 10 or a screw hole into which the stator 11 is inserted, for example, a bolt, screw, or screw. It penetrates through the support column 1 and is fixed integrally to provide compatibility.

Furthermore, although the leg member 3 is attached to at least the lower end of the support column 1, it can also be attached to the upper end so that it can be used leaning against either direction.In the case of a bifold stepladder, both ends It is convenient to set it in

In the figure, 12 is a cushioning material, 13 is a step protection cover, 14 is an upper end protector, 15 is a screw, 16 is a rivet, and 17 is a step mounting metal fitting.

Thus, in a ladder in which step bars 2 are attached at intervals to a pair of columns 1, 1, the lower ends of the columns 1, 1 are fitted into the fitting holes 6 of the leg members 3 made of elastic material, and fixed with the stator 11 of the bolt nut. However, when the ladder is set up, the slope 4 on the bottom of the leg member 3 is formed to be long in the front and back direction by the slope 18, so it easily supports the support column 1 stably along the ground surface. The angle of inclination of the ladder can be maintained well, and in particular, the protruding corner 5 is made as sharp as possible by the slopes 4.4 and 9, 9, 9, 9, so it can be easily attached to a gravel surface. Since it can be fixed by pushing it in, it is easy to handle, has good adhesion, and is safe to use.Also, even when leaning against a slope in a direction other than the slope direction, the other slope 4 acts as a non-slip surface, increasing stability and further protruding. The corner portion 5 becomes a raised edge, which reduces slippage even on soft ground and can be used safely.

[Effect of idea]

With this invention, when a ladder is set up, there are multiple slopes on the bottom of the legs, so it is properly prevented from slipping, and it also makes it easy to secure a foothold on unstable sites such as gravel surfaces, making it easy to handle and applicable over a wide range. It is possible to securely support the ladder in a stable state across the ladder, making it possible to create a ladder that can be stably installed even on uneven or sloping surfaces, and because of its tapered shape, it can be used, for example, on gravel when working on railway lines. When placed upright, it is easy to sink into gravel, and if it is on soft ground, it is easy to crawl, so it has good stability.Depending on the weight, the bottom of the leg member can be crushed and spread out, and in the direction of leaning, it can become taut and have a tendency to bite. It can be installed safely, and since it is compatible, it can be easily replaced in the event of wear or elastic deterioration, and the bottom of the support can be reinforced with a stator that penetrates, making it easy to construct, easy to manufacture, and inexpensive. The effect is significant.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a longitudinal sectional view, FIG. 2 is a front view cut along the line of FIG. 1, FIG. 3 is a side view, FIG. Figure 5 is a longitudinal cross-sectional view along the line of Figure 4;
FIG. 6 is a perspective view of the leg member in an inverted state. 1... Support column, 2... Step pedestal, 3... Leg member, 4...
...Slope, 5...Protruding corner, 6... Fitting hole, 8...
Drain hole, 9...Slope, 10...Mounting hole, 11...
…stator.

Claims (1)

[Claims for Utility Model Registration] 1. A ladder consisting of a support 1 with treads 2 attached at intervals, and provided with an anti-slip leg member 3 made of an elastic material at least at the lower end of the support 1. The front and rear surfaces of the leg member 3 are formed in such a shape that the lower end thereof protrudes from the upper end thereof, and the left and right surfaces are formed with slopes with the lower ends shaved off, and the bottom surface is formed with horizontal grooves 7, 7 that match the leaning angle of the ladder. The leg member 3 is formed with slopes 4, 4, and has a fitting hole 6 into which the support column 1 can fit.
A ladder leg characterized in that it is removably fitted and fixed to the support column 1 with a stator 11 passing through. 2. A utility model registration claim in which the leg member 3 is a cylindrical body with a bottom, and the installation bottom has slopes 4, 4 at an angle of 10 to 30 degrees with respect to the installation plane. Legs for ladders as described in Scope 1.