KR101648967B1

KR101648967B1 - Folding footrest type safety ladder

Info

Publication number: KR101648967B1
Application number: KR1020150042125A
Authority: KR
Inventors: 조규선
Original assignee: 조규선
Priority date: 2015-03-26
Filing date: 2015-03-26
Publication date: 2016-08-17

Abstract

The present invention discloses a footrest type foldable safety ladder having a structure in which when foldable stairs, not in use, are pushed into a staircase receiving space formed within a platform box, the safety ladder may be folded to be kept in storage, and when the foldable stairs are pulled out to be used, the foldable stairs are unfolded and installed in front of the platform box. Since the foldable stairs are unfolded when in use, and folded to be kept in the staircase receiving space when not in use, an overall volume of the footrest type foldable safety ladder can be reduced. Also, when a handle is not used, the handle may be inserted into a bar insertion pipe and kept therein, an overall height can be also reduced. The footrest type foldable safety ladder can be easily carried and transferred and does not occupy a large space when kept.

Description

{FOLDING FOOTREST TYPE SAFETY LADDER}

More particularly, the present invention relates to a foldable foot type safety ladder, and more particularly, to a foldable foot type safety ladder, more particularly, when a staircase is not used, To a safety ladder of a foldable foot type having a structure in which a step is installed in front of a single-phase box.

Generally, various kinds of ladders are used to carry out work at a high place. Examples of types of ladders include Λ-shaped ladders, ─ shaped ladders, uma ladders, and foot type safety ladders.

The safety ladder of the foot type has a stable supporting structure and has a safety feature because it has a structure in which the user steps on the stairs and works on the single phase so that there is less possibility of falling.

For example, Korean Patent Laid-Open Nos. 10-2013-0139064 and 10-2013-0112476 disclose foot type safety ladders.

However, the conventional foot type safety ladder is provided with a step in front of a single phase (or a work table), and since the step is formed in a fixed form, the safety ladder has a large total volume, which is inconvenient for movement and transportation, . There is also a problem that it is not suitable for use for other purposes.

1) Korea Patent Publication No. 10-2013-0139064 (published on December 20, 2013), entitled "Mobile Safety Stairs" 2) Korean Patent Laid-Open No. 10-2013-0112476 (Published on October 14, 2013), entitled "Handrail Position Adjustable Safety Ladder" 3) Registered Utility Model No. 20-0439000 (Registered Date: March 10, 2008), Registered Design: "Block ladder" 4) Korean Utility Model No. 20-2014-0000271 (Disclosure Date: January 14, 2014), Name of Design: "Mobile Ladder"

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above-mentioned problems. The object of the present invention is to provide a staircase in which a staircase is provided in front of a single-phase box, So that it can be easily moved and transported and does not take up much space in storage.

It is another object of the present invention to provide an apparatus and a method for inserting and storing not only a staircase but also a handle into a rod insertion pipe provided at a side of a single-phase box when not using a handle, The present invention provides an improved folding-type safety ladder that can be used as a table on which a single-piece can be placed.

The above-mentioned objects are accomplished by a method of manufacturing a three-dimensional image display device having a single phase constituting an upper plate, a side plate provided vertically downward at both side ends of the single phase, and a rear plate provided vertically downward from a rear end of the single phase, box; A plurality of legs secured to the single-phase box and extending downward to support the single-phase box away from the ground; Wherein a plurality of horizontally laid down foot plates are arranged stepwise at predetermined intervals, both sides of the foot plate are supported by links having a structure in which a horizontal bar and a vertical bar are hinged to be foldable, A folding step provided so as to be inserted into the step storage space of the single-phase box when the link is pushed and folded; A step guide means for guiding the folding step to be inserted into the stair storage space when folded; And a handle installed at an upper portion of the single-phase box and capable of being held by a hand for safety when the user is standing on a single-phase work.

The stair guide means includes a frame coupled to the lower portion of the single-phase box along a rim, and a frame provided vertically on both sides of the frame in the stair storage space of the single-phase box, And a roller rotatably fixed at both ends of the upper end of the folding step and provided so as to be movable along the rail groove and connected to the rail groove, The folding step is guided along the rail groove of the moving guide bracket through the roller so as to be housed in the stair storage space.

A height adjusting rod is integrally formed vertically at both ends of the handle, and a hollow rod inserting pipe is vertically fixed to the side of the leg, the height adjusting rod is inserted and inserted into the rod inserting pipe, The height adjusting rods are fixed in a state that they are lifted upwards so that the handle is provided on the upper part of the single-phase box, and when the height adjusting rods are moved downward The handle is brought into close contact with the upper surface of the single-phase box to hide the handle.

The legs are vertically installed at the corner portions of the single-phase box, and fasteners fixed to the ground are provided at the lower ends of the legs located near the folding stairs, and wheels are installed at the lower ends of the legs located far away from the folding stairs The handle is installed on the side of both legs located near the folding step, and the handle is connected to the upper end of the height adjusting rod so as to connect the upper end of the height adjusting rod, And a handle is formed on the upper surface of the handle so as to lift the height adjusting rod. A front door is provided on the front surface of the single-stage box to open and close the stair storage space, When the folded stairs are stored, the front door is closed and the handle is lowered to hide it on the top of the single-phase box. It characterized by consisting able to use a table.

The foldable foot type safety ladder according to the present invention has a structure in which folded stairs are spread when used, but folded stairs are folded and stored in a stair storage space when not in use, so that the overall volume can be reduced, There is an effect that it does not take up much space in storage.

In addition, the foldable foot type safety ladder according to the present invention has a structure in which not only the folding stairs but also the handle are inserted and stored in the bar insertion pipe when not in use, so that the overall height can be reduced, It has an effect of not taking up space.

In addition, according to the foldable foot type safety ladder according to the present invention, when the folding stairs are stored in the stair storage space and the handle is inserted and stored in the rod insertion pipe, stairs or handles do not protrude from the periphery of the single- Can be used as a table can be effective.

1 is a perspective view showing the construction of a foldable foot type safety ladder according to the present invention,
FIG. 2 is a perspective view showing a state in which a step and a handle are stored in FIG. 1 to reduce the overall volume and height,
FIG. 3 is a perspective view showing a state in which a front door is opened and one side plate is separated to show the inside of FIG. 2,
Fig. 4 is a side view when the present invention is used,
5 is a side view when the present invention is not used;

The present invention will now be described in detail with reference to the accompanying drawings.

1 to 3, the foldable foot type safety ladder according to the present invention is provided with a folding step 300 on the front face of a single-phase box 100 supported by a plurality of legs 200 so as to be separated from the ground, The folding step 300 is installed in the single-phase box 100 so as to be able to move in and out, and the handle 400 is installed on the upper part of the single-

First, the single-phase box 100 includes a single-phase 110 constituting an upper plate, a side plate 120 provided vertically downward from both side ends of the single-phase 110, And a stepped storage space 102 formed therein. And a frame 150 is provided along the rim at the lower portion thereof to support the side plate 120 and the back plate 130. The front door 140 is provided on the front surface of the single-phase box 100 to open and close the staircase storage space 102. The front door 140 has a lower end hinged to the lower end of the single- And is configured to be opened and closed while being rotated downward about the hinge 144. A door handle 142 is installed on the upper portion of the front surface of the front door 140. A plurality of through holes 146 are formed to allow the user to see the inside of the front door 140. Locking means A known technique may be applied.

Next, the plurality of legs 200 are vertically fixed to the corner portions of the single-phase box 100 and extend downward to support the single-phase box 100 apart from the ground. Each of the legs 200 is fixedly attached to the frame 150 to have a strong supporting force and is provided so as to surround the corner portion of the single-phase box 100 to prevent the corner portion of the single- do. A fixture 210 fixed to the ground is installed at the lower end of the leg 200 near the folding step 300 to be described later. (220), and is configured to be movable through a wheel (220) when the fixture (210) is carried.

The folding stairs 300 are installed on the front face of the single-phase box 100, and a plurality of horizontally placed footing boards 310 are arranged in a stepped manner at predetermined intervals. So as to be foldable. Here, the link 320 has a structure in which a middle portion and an end portion of the horizontal bar 322 and the vertical bar portion 324 are coupled to each other by a hinge 326, and the detailed description thereof will be omitted. Subsequently, the lower end of the link 320 is connected by a floor support 330, and a step handle 332 is protruded upward at a portion of the floor support 330. Accordingly, when the link 320 is pulled up by holding the stepped handle 332, the floor support 330 is brought into contact with the ground, and the footplate 310 is unfolded to form a step in front of the single-phase box 100, The foot plate 310 is installed so as to be inserted into the step storage space 102 of the single-phase box 100. [

When the folding step 300 is folded as described above, it is possible to guide the stitching step into the stair storage space 102 by the step guide means.

The stair guide means is installed vertically on both sides of the frame 150 in the stair storage space 102 of the single-phase box 100, and is provided at the center in the depth direction of the stair storage space 102 A moving guide bracket 160 having a long rail groove 162 formed along the folding stairs 300 and a plurality of movable guide brackets 160 rotatably fixed to both ends of the upper ends of the folding stairs 300, And a roller (340) installed to rotate. When the folding step 300 is pushed into the stair storage space 102 while the folding step 300 is retracted by folding the link 320, the folding step 300 is moved to the rail groove 162 of the moving guide bracket 160 through the roller 340, And is housed in the staircase storage space 102. When the link 320 of the folding step 300 is folded, the footrest 310 is superimposed in a vertically erected state so that when the roller 340 moves along the rail groove 162, Is stored in the stair storage space 102. The upper end of the middle portion of the moving guide bracket 160 is formed with an assembly groove 164 communicating with the rail groove 162. The roller 340 is inserted into the rail groove 162 through the assembly groove 164, It becomes possible to assemble into the inside.

Next, the handle 400 is installed on the upper part of the single-phase box 100 so that the user can hold it by hand for safety when the user stands on the single-phase 110, do.

A height adjusting rod 410 is vertically formed integrally at both ends of the handle 400 and a hollow rod inserting pipe 420 is provided on the side of the leg 200. [ And the height adjusting rod 410 is inserted and inserted into the rod insertion pipe 420. That is, the rod insertion pipe 420 is installed on each side of the legs near the folding step 300, and the handle 400 is formed in a shape of "∩" shape so as to connect the upper end of the height adjustment rod 410 And has a bent structure. The assembled height adjusting rod 410 is configured to be fixed at a desired position by a fixing means while being inserted into the rod insertion pipe 420. That is, when the height adjusting rod 410 is fixed in the upward state, the handle 400 is provided on the upper part of the single-phase box 100, and when the height adjusting rod 410 is lowered The handle 400 is brought into close contact with the upper surface of the single-phase box 100 so that the handle 400 is hidden.

Although not shown in the drawing, a space in which the handle 400 is inserted along the rim is formed in the upper surface of the single-phase box 100 such that the handle 400 is formed in an " So that it can be inserted into the space and maintained in a non-protruded state.

Here, a handle knob 402 protrudes from the upper surface of the handle 400 so that the height adjusting rod 410 can be lifted. The fixing means for fixing the height adjusting rod 410 may be a pin type. That is, a pin insertion hole 422 is formed at one side of the upper end of the rod insertion pipe 420, and a plurality of pin fixing holes 412 The fixing pin P may be fixed in such a manner as to penetrate through the pin insertion hole 422 and the pin fixing hole 412. In this case, Therefore, when the handle 400 is lifted up and the fixing pin P is fitted, the fixed state is maintained at the position. Of course, the handle fixing means may be a bolt type fixing the position of the height adjusting rod 410 by pressing through the bolt in addition to the pin type described above.

Now, the operation and operation relationship of the present invention constituted as described above will be described.

When the foldable foot type safety ladder according to the present invention is used, when the front door 140 of the single-phase box 100 is opened and the folding stairs 300 are pulled while holding the step knob 332 as shown in FIG. 4, The link 320 is unfolded so that the stairs come out. When the floor support stand 330 is unfolded until reaching the ground, the stairs are naturally installed in front of the single-phase box 100. When the handle 400 is lifted by holding the handle 402, and fixed to the desired position through the fixing pin P, the installation is completed. In this state, the operator can stand on the single-phase (110) through the stairs and perform desired operations.

5, when the handle 400 is lowered to remove the fixing pin P, the handle 400 is moved downward to the left side of the single-phase box 100, So as to be brought into close contact with the upper surface. Then, when the folded stairs 300 are folded so that the folded stairs 300 are folded, the folded stairs 300 are folded and the links 320 are folded and guided into the stair storage space 102 of the single-phase box 100 Folded stairs 300 are guided along the rail grooves 162 of the moving guide bracket 160 through the rollers 340 and completely housed in the stair storage space 102. [ In this state, the front door 140 may be closed and stored. Of course, the single-phase box 100 in which the folding step 300 and the handle 400 are housed can be used as a table on which objects can be placed.

While the present invention has been particularly shown and described with reference to specific embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Anyone who can afford it will know.

100: Single phase box 102: Stair storage space
110: single phase 120: shroud
130: back plate 140: front door
150: frame 160: moving guide bracket
162: rail groove 200: leg
210: fastener 220: wheel
300: folding step 310: stepping
320: Link 330: Floor support
340: roller 400: handle
410: height adjustment rod 420: rod insertion pipe
P: Fixing pin

Claims

A single-phase box having a single-phase box constituting an upper plate, a side plate provided vertically downward at both side ends of the single-phase, and a rear plate vertically arranged downwardly from a rear end of the single-phase,
A plurality of legs secured to the single-phase box and extending downward to support the single-phase box away from the ground;
Wherein a plurality of horizontally laid down foot plates are arranged stepwise at predetermined intervals, both sides of the foot plate are supported by links having a structure in which a horizontal bar and a vertical bar are hinged to be foldable, A folding step provided so as to be inserted into the step storage space of the single-phase box when the link is pushed and folded;
A step guide means for guiding the folding step to be inserted into the stair storage space when folded; And
And a handle provided on the upper portion of the single-phase box and capable of being held by a hand for safety when the user is standing on a single-phase and working.

The method according to claim 1,
Wherein the step guide means comprises:
A frame coupled to the lower portion of the single-phase box along a rim,
A moving guide bracket installed vertically on both sides of the frame in the stair storage space of the single-phase box and having a rail groove formed along the depth direction of the stair storage space at the center,
And rollers fixed to both ends of the upper end of the folding step so as to be rotatable and connected to the rail grooves and movable along the rail grooves,
And the folding step is guided along the rail groove of the moving guide bracket through the roller to be housed in the stair storage space when the link is folded and the folding step is pushed into the stair storage space in a contracted state. .

The method according to claim 1,
A height adjusting rod is vertically formed integrally with both ends of the handle, a hollow rod inserting pipe is vertically fixed to the side of the leg, the height adjusting rod is inserted and inserted into the rod inserting pipe, The height adjusting rod is fixed in a state where the height adjusting rod is lifted upwards so that the handle is provided on the upper part of the single phase box, And the handle is hermetically fitted to the upper surface of the single-phase box so that the handle is hidden.

The method of claim 3,
The legs are vertically provided at the corner portions of the single-phase box, and fasteners fixed to the ground are provided at the lower ends of the legs near the folding stairs, and wheels are provided at the lower ends of the legs located far away from the folding stairs And is movable through a wheel when the fixture is pushed and held,
The bar insertion pipe is installed on each side of the legs near the folding step, and the handle is bent in a "?"Shape to connect the upper end of the height adjusting rod, A handle knob is protruded so as to be lifted,
The front door of the single-phase box is provided with a front door which can open and close the stair storage space. When the front door is closed while the folded stairs are housed in the stair storage space and the handle is lowered and hidden in the upper surface of the single- Wherein the safety ladder is configured such that the safety ladder is configured so that the safety ladder is configured.