KR200300429Y1 - Height adjustable fold-type ladder - Google Patents

Abstract

The present invention relates to a folding ladder that can adjust the height of the ladder, more specifically, it is possible to adjust the height by combining a plurality of ladders to work at various heights with a single ladder, the coupling between ladders after work It is possible to reduce the length by releasing the foldable ladder that can be easily adjusted height.

The height-adjustable folding ladder 20 according to the present invention includes a folding ladder member 22 to which the first and second ladders 30 and 32 are rotatably connected, and the first and second pillars 38 and 40. The first and second coupling ladders 34 and 36, which form an isosceles triangle shape, gradually decrease upwards, and combine the folding ladder member 22 and the first coupling ladder 34, or The second coupling ladder (34, 36) consists of coupling means for coupling each other.

Description

Folding ladder with height adjustment {HEIGHT ADJUSTABLE FOLD-TYPE LADDER}

The present invention relates to a folding ladder that can adjust the height of the ladder, more specifically, it is possible to adjust the height by combining a plurality of ladders to work at various heights with a single ladder, the coupling between ladders after work It is possible to reduce the length by releasing the foldable ladder that can be easily adjusted height.

In general, ladders are used for climbing up and down, and are fastened by nailing or slotting a plurality of short-length scaffolds between two long pillars using wood, bar, rope, and light metal. These ladders can be used so that the upper part is hung on a wall or the like, or the two ladders abut each other to connect the parts to form a triangular shape. It was used by hanging a string or wire.

A conventional folding ladder is shown in FIG. The conventional folding ladder 1 includes first and second ladders 2 and 4 consisting of two long pillars, a plurality of short-length scaffolds 6 provided at regular intervals between the two pillars, and the first and second ladders. The connecting member 8 for rotatably coupling the upper portions of the first and second ladders 2 and 4 and the two ladders 2 and 4 so as not to be opened between the first and second ladders 2 and 4. It consists of a fixing member 10 for fixing to each other.

However, in the conventional folding ladder as described above, the height of the ladder is limited because the length of the post is constant. Thus, several ladders of different heights were required, which cannot be used to climb up and down the height of ladders. In addition, there was a problem in that the length of the ladder is also inconvenient to carry.

The present invention has been devised to solve the problems of the conventional folding ladder as described above, the height can be adjusted by combining a plurality of ladders, it is possible to work at various heights with a single ladder, the coupling between the ladders after the work The purpose of the present invention is to provide a folding ladder that can be height-adjusted and easier to carry by reducing the length.

1 is a perspective view of a conventional folding ladder.

Figure 2 is a side view of the height adjustable folding ladder according to the present invention.

Figure 3 is a front view of the height adjustable folding ladder according to the present invention.

Figure 4 is a front view of the coupling ladder according to an embodiment of the present invention.

5 is an enlarged cross-sectional view of portion A of FIG. 2;

6 is a perspective view of the coupling member shown in FIG.

7 is a front view of the coupling ladder according to another embodiment of the present invention.

8 is a front view of the height adjustable folding ladder of another embodiment according to the present invention.

※ Explanation of symbols for main parts of drawing

DESCRIPTION OF SYMBOLS 1: Conventional folding ladder 2: First ladder 4: Second ladder

6 footrest 8 connecting member 10 holding member

20: ladder of the present invention 22: folding ladder member 24: connecting member

26 fixing member 28 footrest 30 first ladder

32: 2nd ladder 34: 1st ladder

36: 2nd binding ladder 38: 1st pillar 40: 2nd pillar

50: hook 52: coupling member 54: rough surface

56: smooth side 60: another binding ladder according to another embodiment

62: first pillar 62: second pillar

70: ladder according to another embodiment of the present invention

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.

Figure 2 is a side view of the height adjustable folding ladder according to the present invention, Figure 3 is a front view of the height adjustable folding ladder according to the present invention.

The height-adjustable folding ladder 20 according to the present invention includes a folding ladder member 22 to which the first and second ladders 30 and 32 are rotatably connected, and the first and second pillars 38 and 40. The first and second coupling ladders 34 and 36, which form an isosceles triangle shape, gradually decrease upwards, and combine the folding ladder member 22 and the first coupling ladder 34, or The second coupling ladder (34, 36) consists of coupling means for coupling each other.

The folding ladder member 22 includes first and second ladders 30 and 32 having a plurality of foot plates 28 of short length between two pillars whose width gradually decreases upwards, and the two ladders 30 and 32. It consists of a connecting member 24 for rotatably connecting the fixing member 26 for fixing so as not to open the gap between the two ladders (30, 32).

A first coupling ladder 34 according to an embodiment of the present invention is shown in FIG. 4. The first coupling ladder 34 is composed of first and second pillars 38 and 40 with a gradually decreasing gap therebetween, and a plurality of short scaffolds 28 coupled between the two pillars 38 and 40. . Although the first coupling ladder 34 is illustrated in FIG. 4, the second coupling ladder 40 has the same shape and is not illustrated because there is only a difference between the two pillars. The first and second coupling ladders 34 and 36 are coupled to the two ladders 30 and 32 of the folding ladder member 22 so as to face each other.

An enlarged coupling state of the first and second coupling ladders 34 and 36 shown in part A of FIG. 2 is shown in FIG. 5. As shown in FIG. 5, a pair of hooks 50 protrude from the top footrest of the second coupling ladder 36 to seat and support the footrest of the first coupling ladder 34. Looking at the coupling process of the first and second coupling ladders (34, 36), once the footrest of the first coupling ladder 34 is seated on the hook 50 installed on the upper footboard of the second coupling ladder (36). Thereafter, the first coupling ladder 34 is in close contact with the second coupling ladder 36. The scaffolds of the first and second engagement ladders 34 and 36 that are in close contact overlap each other in a straight line. As such, the scaffolds of the first and second coupling ladders 34 and 36 positioned at the bottom of the overlapping scaffolds are coupled to each other using the coupling member 52. The first and second coupling ladders 34 and 36 coupled in the same manner as described above can be stably and shake-free even when using a ladder.

6 shows a coupling member 52 for coupling the scaffolds of the two ladder members 34 and 36 superimposed on the same straight line as described above. The coupling member 52 may be of various kinds, but in the present invention, a velcro tape was used as an embodiment. The velcro tape 52 is composed of a rough surface 54 and a smooth surface 56, the structure and the rough surface 54 and the soft surface 56 is tangled with each other firmly. 3 illustrates a state in which the footholds of the two ladder members are connected to each other by using the Velcro tape 52.

In FIG. 5, only the coupling method of the first and second coupling ladders 34 and 36 is illustrated, but the coupling method between the folding ladder member 22 and the first coupling ladder 34 is also the same as the coupling method described above. Not shown.

As described above, by combining the first and second coupling ladders 34 and 36 to the folding ladder member 22 in order, the height of the ladder can be adjusted, and assembling and disassembling are easy to transport. Moreover, since it has a triangular shape, stability can be ensured.

A coupling ladder 60 according to another embodiment according to the present invention is shown in FIG. 7. The coupling ladder 60 according to the other embodiment of the present invention except that the first pillar 62 is inclined with respect to the ground, and the second pillar 64 has a right triangle shape perpendicular to the ground. Coupling method or function is the same as the first and second coupling ladders 34 and 36 according to an embodiment of the present invention. 8 shows a ladder 70 according to another embodiment of the present invention in which the coupling ladder 60 shown in FIG. 7 is coupled. Ladder 70 according to another embodiment of the present invention is one side is perpendicular to the ground, the other side has a right triangle shape inclined with respect to the ground. Such a shape can minimize the distance to the wall when working near the wall, so that the work can be safely performed.

As described above, the height-adjustable folding ladder according to the present invention is possible because the height can be adjusted by combining a plurality of ladders, it is possible to work at various heights with one ladder, by releasing the coupling between the ladders after the work The length can be shortened to make transportation easier.

Claims (4)

In the ladder, First and second ladders 30 and 32 having an isosceles triangle shape gradually decreasing in width, and a connecting member 24 rotatably connecting the first and second ladders 30 and 32; A folding ladder member (22) comprising a fixing member (26) for fixing the first and second ladders (30, 32) so as not to be opened; And The width of the first and second pillars 38 and 40 gradually decreases upwards to form an isosceles triangle, and the first and second coupling ladders 34 and 36 have different widths. This possible folding ladder. The method of claim 1, The pair of hooks 50 protruding from the top of the first and second coupling ladders 34 and 36 to support the folding ladder member 22 or the foot of the first coupling ladder 34 are supported. The height-adjustable folding ladder characterized in that there is. The method of claim 2, Coupling members 52 for coupling the scaffold of the folding ladder member 22, the scaffold of the first coupling ladder 34, and the scaffolds of the first and second coupling ladders 34 and 36, which are overlapped on a straight line, A height adjustable folding ladder further comprising. The method of claim 1, Instead of the first and second coupling ladders 34 and 36, the first pillar 62 is inclined with respect to the ground, and the second pillar 64 is a coupling ladder 60 having a right triangle shape perpendicular to the ground. The height-adjustable folding ladder, which is combined to form a right triangle shape.