KR200452864Y1 - ladder - Google Patents

Abstract

Ladder is disclosed. A ladder comprising a pair of frames having a rod shape, a plurality of scaffolds each of which is coupled to a pair of frames, and a foot which is coupled to one end of the frame and extends or contracts in the longitudinal direction of the frame, Because it is adjustable, it is easy to move, and when working on electric poles, it can be fixed leaning against electric poles so that it can work in narrow spaces, and even when the terrain is not flat, the ladder can be leveled to ensure stability of work.

Ladder, Adjustable Length, Horizontal, Poles, Terrain

Description

Ladder

The present invention relates to a ladder having a horizontal maintenance function and a length adjustment function in consideration of terrain characteristics.

Ladders are designed to be stepped up high and are commonly used in telecommunication facilities, such as telephone poles and overhead cables. The ladders currently used in the workplaces of telecommunication facilities include bamboo ladders, folding ladders used for folding, and aluminum ladders and fiberglass reinforce plastic ladders depending on the material. These conventional ladders generally have a constant length, so that they are bulky and heavy, which makes them inconvenient to use in many places of communication facilities. In addition, when used leaning against the pole, the contact area with the pole is less unstable fixed, when the worker loses the equilibrium had the disadvantage that the ladder is easily turned away from the pole. If the work site was inclined, it was difficult to maintain the balance of the ladder.

The present invention is to provide a ladder that can be horizontally adjusted according to the terrain, adjustable in length, easy to move, even in a narrow space.

According to an aspect of the present invention, a pair of frame of the rod shape; A plurality of scaffolds having both ends coupled to a pair of frames, respectively; A ladder is provided that is coupled to one end of the frame and includes a foot that extends or contracts in the longitudinal direction of the frame.

The frame may include a U-shaped channel having one side open and a bar inserted into the channel, and the scaffolding coupled to the bar may be located in a different plane than the scaffolding coupled to the channel, in particular, Both ends of the scaffold to be joined may be respectively coupled to opposite sides of the pair of bars.

A support portion coupled to the other end of the pair of frames to be in contact with the support object, wherein the support portion includes a cap covering the other end of the frame; And a bow-shaped contact portion coupled to the cap, and an elastic member may be interposed between the contact portion and the cap. In addition, the support portion may further include a friction member formed on the surface in contact with the support object.

According to a preferred embodiment of the present invention, the length is adjustable, so it is easy to move, can be fixed leaning against the pole when working in the pole, etc. can work in a narrow space, even where the terrain is not flat level of the ladder It is possible to maintain the stability of the work.

The present invention may be variously modified and have various embodiments, and specific embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all transformations, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the present invention, when it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Hereinafter, a preferred embodiment of the ladder according to the present invention will be described in detail with reference to the accompanying drawings, in the description with reference to the accompanying drawings, the same or corresponding components are given the same reference numerals and duplicate description thereof Will be omitted.

1 is a front view showing a ladder according to an embodiment of the present invention, Figure 2 is a side view showing a ladder according to an embodiment of the present invention. 3 is a plan view showing a ladder according to an embodiment of the present invention, Figure 4 is a perspective view according to an embodiment of the present invention. 1 to 3, an upper portion 10 including a bar 11 and a first footrest 12, a lower portion 20 including a channel 21, and a second footrest 22, and a cap 14. , The contact portion 15, the coupling portion 16, the fixing hole 19, the horizontal adjustment screw 25, the foot 28 and the fixing screw 24 are shown. In this embodiment, the surface on which the ladder is leaned on the supporting object is called the front face A, and the rear surface is called the rear face B. FIG.

The upper portion 10 consists of a pair of bars 11 and a plurality of first scaffolds 12, wherein the pair of bars 11 are spaced apart at an interval corresponding to the width of the first scaffold 12 in parallel. Both ends of the first footrest 12 are engaged with the bars 11 at right angles to the longitudinal direction of the bar 11.

The lower portion 20 is composed of a pair of c-shaped channels 21 and a plurality of second scaffolds 22, and the pair of channels 21 are spaced corresponding to the width of the second scaffold 22. Spaced apart from each other and disposed in parallel to each other, and both ends of the second scaffold 22 may be coupled to the channel 21 at right angles to the longitudinal direction of the channel 21.

The lower end of the bar 11 and the upper end of the channel 21 are connected so that the length of the upper part 10 and the lower part 20 is the length of the entire ladder. A channel 21 having an empty inside and having a U-shaped cross section is provided to allow the bar 11 to be inserted therein, and when the ladder is stored or moved, the bar 11 is inserted into the channel 21 to partially or partially By wrapping the whole, you can adjust the length of the ladder.

Referring to FIG. 1, a space is formed inside the channel 21, and the front surface of the channel 21 is open to confirm that the cross section is a c-shape. The empty space inside the channel 21 is to allow the bar 11 to be inserted, the front is open, when the bar 11 is inserted into the channel 21, the first footrest 12 is a channel The purpose of this is to prevent them from colliding with the 21 or the second footrest 22. Although the open side is shown in the front in the figure, a channel 21 having an open rear side is also available.

2 and 4, the first scaffold 12 of the upper part 10 and the second scaffold 22 of the lower part 20 are separately disposed on the front side A and the rear side B of the ladder, respectively. Is shown. That is, when the first footrest 12 and the second footrest 22 are positioned on different planes, and the bar 11 is inserted into the channel 21, the first footrest 12 and the second footrest 22 are formed. It shall not be crossed.

The fixing screw 24 serves to fix the bar 11 and the channel 21 through the bar 11 and the channel 21 so that the bar 11 and the channel 21 are not inserted. As shown in FIG. 2, when a plurality of fixing holes 19 are formed on the side surfaces of the bars 11, the lengths of the bars 11 inserted into the channels 21 may be adjusted.

In addition to the illustrated form, the bar 11 can be applied as long as the device can be fixed so as not to be inserted into the channel 21.

The foot 28 and the horizontal adjustment screw 25 coupled to the lower end of the channel 21 adjust the lengths of the pair of channels 21 differently, so that even when the terrain is not flat, the first footrest 12 and The second scaffold 22 serves to correct so that it is horizontal with respect to gravity. Therefore, it is possible to work in a stable posture even when the floor is inclined. The horizontal adjustment screw 25 is one embodiment, and may be used if the device is capable of maintaining a horizontal level by finely adjusting the length of the channel 21. In addition, the foot 28 may use a material that can increase the friction with the floor, such as rubber so that the ladder does not slip.

An apparatus for stably leaning on a support object may include a support portion coupled to an upper end portion of a frame, and in the present embodiment, the upper portion of the bar 11 may be stably fixed to a fixed object having a round shape, such as a pole. The cap 14, the contact 15 and the engagement 16 are presented as supports.

3 and 4, it can be seen that the contact portion 15 protrudes in the front (A) direction of the ladder. The contact portion 15 is bent in a bow shape and can be stably leaned on a cylindrical support object such as a pole. When a friction member such as rubber is coupled to the contact surface with the supporting object, the ladder is reliably leaned without slipping. Moreover, if the contact part 15 is changed into another shape according to the shape of a support object, it can be utilized other than a pole.

The cap 14 is located at the top of the bar 11 and secures the contact 15 to the bar 11. When the cap 14 is detachable from the frame, it is possible to use a ladder for various purposes by combining the support portion formed with the contact portion 15 of the other shape as necessary.

When the engaging portion 16 is used between the cap 14 and the contact portion 15 by using an elastic member such as rubber, the angle of the contact portion 15 can be changed in accordance with the angle of leaning the ladder, thereby stably fixing the ladder. can do.

5 is a front view showing a ladder according to another embodiment of the present invention, Figure 6 is a side cross-sectional view showing a ladder according to another embodiment of the present invention, Figure 7 is a perspective view showing a ladder according to another embodiment of the present invention to be.

Referring to FIGS. 5-7, an upper portion 30 including a bar 31 and a first footrest 32, a lower portion 40 including a channel 41 and a second footrest 42, and a cap 34 are included. ), The contact portion 35, the coupling portion 36, the fixing hole 39, the horizontal adjustment screw 45, the foot 48 and the fixing screw 44 are shown. In this embodiment, the surface on which the ladder is leaned on the supporting object is called the front surface C, and the rear surface is called the rear surface D. FIG.

6 and 7, the pair of channels 41 are open to face each other when the bar 31 of the upper portion 30 is inserted into the channel 41 of the lower portion 40. Provide a passage through which the first footrest 32 will pass.

In addition, both ends of the lower second footrest 22 at the front side C and the rear side D of the ladder may be coupled to the pair of channels 41. In the drawing, the second scaffold 42 is illustrated as being paired to the front (C) and the rear (D), but the second scaffold (22) on only one side of the front (C) or the rear (D). It is also possible to form By placing the positions of the first footrest 32 and the second footrest 42 in different positions on the plane viewed from above, the upper portion 30 and the lower portion 40 may be stacked as in one embodiment.

In addition, the cap 34, the contact portion 35, the coupling portion 36, the fixing hole 39, the horizontal adjustment screw 45, the foot 48 and the fixing screw 44 are similar to the above embodiment , The description will be replaced with the detailed description thereof.

In the above description with reference to a preferred embodiment of the present invention, those of ordinary skill in the art that the present invention in the scope of the invention without departing from the spirit and scope of the present invention described in the utility model registration claims It will be understood that modifications and changes can be made.

Many embodiments other than the above-described embodiments exist within the utility model registration claims of the present invention.

1 is a front view showing a ladder according to an embodiment of the present invention.

Figure 2 is a side view showing a ladder according to an embodiment of the present invention.

3 is a plan view showing a ladder according to an embodiment of the present invention.

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

5 is a front view showing a ladder according to another embodiment of the present invention.

Figure 6 is a side cross-sectional view showing a ladder according to another embodiment of the present invention.

7 is a perspective view showing a ladder according to another embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

10,30: upper 20, 40: lower

11, 31: bar 21, 41: channel

12,32: first footrest 22,42: second footrest

14, 34: Cap 24, 44: Set screw

15,35 contact 28,48 foot

16,36: coupling part

19,39: Fixing hole 25,45: Horizontal adjusting screw

Claims (8)

A pair of frames of rod shape; A plurality of scaffolds having both ends coupled to the pair of frames, respectively; A horizontal adjustment screw formed at one end of the frame; And And a foot coupled to one end of the frame, the foot extending or contracted in the longitudinal direction of the frame by the leveling screw. The method of claim 1, The frame is The channel of the U-shape open on one side and And a bar inserted into the channel. The method of claim 2, The scaffolding coupled to the bar is located in a plane different from the scaffolding coupled to the channel. The method of claim 3, Both ends of the scaffold coupled to the bar is coupled to each other, characterized in that coupled to the opposite surface of the pair of bars. The method of claim 1, Coupled to the other end of the pair of frames The ladder further comprises a support portion in contact with the support object. The method of claim 5 The support portion A cap covering the other end of the pair of frames; And Ladder comprising a bow-shaped contact portion coupled to the cap. The method of claim 6, The ladder characterized in that the elastic member is interposed between the contact portion and the cap. The method of claim 5, Ladder characterized in that it further comprises a friction member formed on the surface in contact with the support object of the support.

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