JP3411252B2 - Folding platform - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding type elevator used as a step or a stepladder, and particularly to a vertical direction of a pair of left and right columns which are arranged in a substantially C shape so that the lower side is widened. It was equipped with a pair of legs, each of which has a crossing rail between the middle part and between the upper ends, and the upper ends of both legs were pivotally connected, and the lower ends of both legs were closed and opened. The present invention relates to a small foldable lifting platform whose posture can be freely changed to an open leg posture.

[0002]

2. Description of the Related Art In an ordinary stepladder provided with two or more cross rails between both columns, each cross rail has a front-rear width that is approximately the same as the outer diameter of the pole and projects forward from the pole. It is installed between the opposing inner side surfaces of both stanchions, but it has small crosspieces only at two places between the vertical middle part and the upper end of both stanchions, and it is small and small used as a step or stepladder. The folding lift is
In order to increase the ease of ascending and descending and to increase the stability, each of the cross rails is formed to have a front-rear width wider than the outer diameter of the support pillar, and is installed between the opposing inner side surfaces of the support pillar so as to project forward from the support pillar. FIG. 3 (B) is a cross-sectional plan view showing a leg 11 of a conventional folding type lifting platform which is used as a step or a stepladder.
As can be seen from this figure, the step rail 13 of the leg 11 has a front-rear width that is at least twice the outer diameter (front-rear width) of the support column 2, and both support columns 2 are projected forward from the support column 2. It is built between two.

[0003]

By the way, in the conventional folding type elevator, as can be seen from FIG. 3B, of the step bars 13 of each leg 11, a protrusion protruding forward from the column 2. Since both end surfaces 14, 14 of the part 13a are formed so as to project outward from the positions of the inner side surfaces 2a, 2a of the columns 2, 2 which face each other, they are folded when shipping this kind of lifting platform as a product. When a plurality of lifts are stored in a box in order upside down and packed, the front and rear side surfaces of the column 2 of the leg 11 of one of the two adjacent lifts are connected to the legs of the other lift. The step rail 13 of the body 11 will hit.

That is, FIG. 7 is a transverse cross-sectional view showing a state in which two conventional type elevators K'1 and K'2, each of which is folded, are stacked on top of each other upside down. In K′1 and K′2, the left and right end surfaces 14 and 14 of the projecting portion 13a of each leg 11 projecting forward from the column 2 project outward from the opposing inner side surfaces 2a and 2a of the columns 2 and 2. Since it is formed as shown in FIG.
The front end of the step rail 13 of the leg 11 of the other lift K'2 hits the front and rear side surfaces of the support column 2 of the leg 11 in the above, which causes the distance between the adjacent lifts K'1 and K'2. S'becomes wider and storage efficiency is poor.

According to the present invention, when a plurality of elevators, each of which is folded as described above, are sequentially stored upside down in a box,
The space between adjacent lifts can be made as narrow as possible,
It is an object of the present invention to provide a folding platform that can improve storage efficiency, thereby reducing inventory space and transport space, and thus reducing product cost.

[0006]

The invention according to claim 1 is
As can be seen from FIG. 2, stepped pedestals 3 and 4 are placed between the upper and lower middle portions of the pair of left and right struts 2 and 2 which are arranged in a substantially V shape so that the lower side is widened from the struts 2, respectively. A pair of legs 1 and 1 are installed so as to project forward, and the step rails 3 and 4 are respectively formed on both ends thereof in a plan view.
The substantially L-shaped mounting engagement portion 10 is formed on the inner side surface 2a of each support column 2
Attached to the post 2 while engaging with the front side surface 2b
Only fixed, while pivotally connected the upper ends to each other of the two legs 1,1, folding the bottom end side of the two legs 1,1 is freely attitude change and open leg posture and an open folded position in which closed-type lifting stand met
As for at least the intermediate step rail 3 of each leg 1, both end faces 7, 7 of the front side 3ao of the projecting portion 3a projecting forward from the column 2 have inner surface 2a of the two columns 2, 2 facing each other. It is characterized in that it is formed inside the 2a position.

According to a second aspect of the present invention, in the folding lift according to the first aspect, at least the front side 3ao of the protrusion 3a is included.
Both end faces 7, 7 are characterized in that they are tapered and tapered.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a side view showing a folding-type lifting table K according to the present invention, FIG. 2 is a front view (same as a rear view), and FIG. It is an XX line expanded sectional view. FIG. 3B shows a conventional cross rail. As can be seen from these figures, the lifting platform K is composed of a pair of front and rear legs 1,1. The upper ends of the legs 1,1 are pivotally connected by a hinge 5, and a pair of left and right link mechanisms are provided. As shown in FIG. 1, the legs 6 and 6 have an inverted V-shaped open posture in which the lower ends of the legs 1 and 1 are opened, and the legs 1 and 1 are not shown.
The lower end side of the can be changed to a folded position.

Each leg 1 has a step 2 and a step 2 between the upper and lower intermediate portions of a pair of left and right columns 2 and 2 which are arranged in a substantially V shape so that the lower side is widened. As shown in FIG. 3 (A), the intermediate step rail 3 is provided on the front side 3ao of the projecting section 3a projecting forward from the column 2. Both end surfaces 7, 7 are formed so as to be located inside the positions of the inner side surfaces 2a, 2a of the columns 2, 2 that face each other.

The intermediate step rail 3 is located slightly closer to the lower side than the half point of the entire length of the support column 2. This is to prevent the adjacent rails 3 and 3 of the adjacent elevators K and K from overlapping each other when a plurality of elevators K ... are alternately stacked upside down during packaging.

The step rail 3 comprises a step rail main body 8 made of an extruded aluminum alloy material and resin caps 9 and 9 attached to both ends of the step rail main body 8, respectively. A mounting engagement portion 10 having a substantially L shape in a plan view is formed on the inner surface 2 a of the support column 2.
And the front side surface 2b are engaged and fixed to the column 2. Each cap 9 includes a portion 9a located on the inner side surface 2a side of the support column 2 and a portion 9b protruding forward from the front side surface 2b of the support column 2, and the portion 9b protruding forward from the support column 2 is on the front side thereof. The outer surface of is located inside the inner surface 2a of the column 2.

[0012] However, the pillar 2 in the above-mentioned step 3
The projecting portion 3a projecting further forward includes a part of each of the step rail body 8 and each cap 9, and both end surfaces 7, 7 of the projecting portion 3a projecting forward from the column 2 on the front side 3ao.
Is the outer surface on the front side of the front protruding portions 9b, 9b of both caps 9, 9. As can be seen from FIG. 3B,
Both end faces 7, 7 on the front side 3ao of the protruding portion 3a protruding forward from the column 2, that is, the front protruding portion 9 of both caps 9, 9.
The front side outer surfaces of b and 9b are tapered so as to be tapered.

The step rail 4 on the upper end side is shown in FIG.
Although detailed illustrations such as the above are omitted, as can be seen by referring to FIGS. 1 and 2, only the length of the step rail 4 is shorter than that of the intermediate side step rail 3, and The structure is similar to the structure of the intermediate rail 3 described above. Each of the columns 2 of the leg 1 is made of an extruded aluminum alloy material, like the steps 3 and 4, and a resin cap 15 is attached to the lower end of each column 2.

FIG. 4A is a front view showing a state in which two elevators K1 and K2, each of which is folded in a folding posture, are stacked upside down, and FIG. 4B is a side view thereof. Is. In this state, one leg 1 of the lifting platform K1 and
The leg 1 of one of the elevators K2 adjacent thereto faces each other upside down, but at this time, the leg 1 of the elevator K1
The middle stepped rail 3 is the two columns 2 and 2 of the leg 1 of the lift K2.
As it rushes in between, the middle-side step bar 3 of the leg 1 of the elevator K2 rushes between both columns 2 and 2 of the leg 1 of the elevator K1,
This state is enlarged and shown in FIG. Further, at this time, the upper-end-side step bar 4 of the leg body 1 of the lifting platform K1 protrudes between the lower ends of both columns 2 and 2 of the leg body 1 of the lifting platform K2, and the upper end portion side of the leg body 1 of the lifting platform K2. The step rail 4 projects between the lower ends of both columns 2 and 2 of the leg 1 of the lift K1.

As shown in FIG. 5, the elevators K1 and K2 are provided.
Means that the left and right end surfaces 7, 7 on the front side 3ao of the projecting portion 3a projecting forward from the column 2 of each leg 1 are both columns 2, 2.
Are formed so as to be located inside the facing inner side surfaces 2a, 2a, the intermediate step rail 3 of the leg body 1 of the lift K2 has a protruding portion 3a protruding forward from the column 2.
3ao of the front part of the elevator 3 projects into the space between the support columns 2 and 2 of the leg body 1 of the elevator K2, and the intermediate step rail 3 of the leg 1 of the elevator platform K2
Also in (shown in phantom line), the front portion side 3ao (shown in phantom line) of the projecting portion 3a projecting forward from the column 2 projects between both columns 2 and 2 of the leg 1 of the lift K1. In this case, the protrusion 3
Since both end surfaces 7 and 7 on the front side 3ao side of a are tapered and formed in a tapered shape, the tapered end surfaces 7 and 7 serve as guide surfaces and extend between the supporting columns 2 and 2 of the leg 1 of the other party. It is easy to enter.

As described above, when the two elevators K1 and K2 are stacked upside down, the gap S between the elevators K1 and K2 is equal to the step 3 on the intermediate portion side of each leg 1. The front side 3ao of the protruding part of the
It becomes narrower as it rushes in between two. By the way, in the conventional lift, as shown in FIG. 7, the front and rear side surfaces of the columns 2 of the legs 11 in one lift K1 come into contact with the front ends of the steps 13 of the legs 11 in the other lift K2. The distance S between the adjoining lifts K1 and K2 is wide. By comparing and referring to FIG. 7 and FIG. 5, the operation and effect of the lifting table K according to the present invention is clear.

Further, FIG. 6A shows a state in which, for example, eight elevators K according to the present invention are piled up upside down, and FIG. 6B shows the same eight units. It shows a state in which the conventional type elevators K'are piled up upside down. Here, in the lifting table K of the present invention, the front-rear width a of the support column 2 is 30 mm, the protrusion amount b of the step rail 3 from the front side surface of the support column 2 is about 45 mm, and the upper ends of the folded legs 1, 1 are located. The front-rear width c is about 80 mm, the width d on the lower end side thereof is about 70 mm, and when the conventional type elevator K ′ has the same dimensions a to d as the elevator K of the present invention, The stacking length L of the eight elevators K is 808 mm, the stacking length L'of the conventional eight elevators K is 947 mm, and the difference between them is L-L '=
The total length is 139 mm, and the total length can be shortened by 139 mm when eight units are stacked.

In the above-described embodiment of the present invention, both the intermediate-side step bar 3 and the upper-end side step bar 4 of each leg 1 have a front side 3ao of the protrusion 3a protruding forward from the support column 2. Both end faces 7, 7 of the support columns 2 and 2 facing each other on the inner side faces 2a
Although it is formed so as to be located inside the position, when a plurality of elevators are sequentially stacked upside down, the upper end side step bar 4 of each elevator K is shown in FIG. As can be seen from the above, since the length is short and it contacts the lower end of the leg 1 of the opponent's lift K, the entire area of the step bar 4 is in a state in which it can enter between the lower ends of the columns 2 and 2. The upper end side step rail 4 may have a conventional structure.

In the elevator according to the present invention, as shown in FIG. 3, the length of the step body 8 of the step 3 is slightly shortened, but this shortened portion is a portion close to the column 2. Since the cap 9 is attached to this portion, there is no practical problem.

[0020]

According to the folding lift of the invention of claim 1, at least the intermediate side step bar of each leg has at least both front end surfaces of the projecting portion projecting forward from the column. Since it is formed so as to be located inside the facing inner side surface of both columns, when shipping this elevator as a product, a plurality of folded elevators were stacked upside down in order. When packing in a box in a state, at least the front side of the protrusion of the middle side step of each leg can project between the left and right struts of the other leg, and therefore the space between the left and right struts The space between adjoining elevators can be narrowed by the amount of rushing in to increase the storage efficiency, which can reduce the inventory space and transportation space, resulting in lower product cost. It will be possible.

According to the folding type elevator of the invention as claimed in claim 2, since both end surfaces of at least the front side of the projecting portion are tapered so as to be tapered, the tapered end surface serves as a guide surface. As a result, it becomes easy for the leg of the other party to plunge between the columns.

[Brief description of drawings]

FIG. 1 is a side view showing a folding-type lifting table according to the present invention.

FIG. 2 is a front view of the folding lift table of the above.

3A is an enlarged cross-sectional view taken along line XX of FIG.
(B) is a sectional view similar to (A) showing a conventional step rail.

FIG. 4 (A) is a front view showing a state in which two elevators K are stacked upside down and FIG. 4 (B) is a side view thereof.

FIG. 5 is an enlarged cross-sectional view taken along line YY of FIG.

FIG. 6 (A) is a side view showing a state in which eight lifts according to the present invention are stacked upside down, and FIG.
[Fig. 4] is a similar side view showing a state in which the same eight conventional type elevators are stacked upside down.

FIG. 7 is a cross-sectional view similar to FIG. 5, showing a case of a conventional lift.

[Explanation of symbols]

K, K1, K2 lifts 1 leg 2 props 3 Mid-section side rail 3a Projection of step 3ao Front part of protrusion 4 Upper end side step 7 End face of front part of protrusion 8 step body 9 cap K ', K'1, K'2 Conventional lifts 11 Legs of conventional lifts 13 Steps of conventional lifts 13a Projection portion of a conventional crossing stair

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) E06C 1/393

Claims (2)

(57) [Claims] 1. A pair of left and right struts, which are arranged in a substantially C-shape so that the lower side is widened, are provided with stepping rails 3, 4 between the upper and lower intermediate portions and between the upper and lower portions, respectively, from the stanchion 2 to the left and right front. Each leg has a pair of legs 1 and 1 that are installed so as to project.
Reference numerals 3 and 4 are L-shaped in plan view formed at both ends thereof.
The engaging portion 10 for mounting is provided on the inner side surface 2a and the front side surface 2b of each column 2.
Attached and fixed to the column 2 in a state of being engaged over
A folding type lifting platform , in which the upper ends of both legs 1, 1 are pivotally connected to each other, and the lower ends of both legs 1, 1 can be freely changed between a folded position and an open position. At least the intermediate step rail 3 of each leg 1 has both end surfaces 7, 7 on the front side 3ao of the projecting portion 3a projecting forward from the support pillar 2 and inner surface 2a, 2a facing each other of the support pillars 2, 2. A foldable lift that is formed so as to be located inside the position. 2. At least a front side 3a of the protrusion 3a
The folding lift table according to claim 1, wherein both end surfaces 7, 7 of o are tapered and formed in a tapered shape.