JPS641399Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a stair workbench suitable for use during interior work near a rectangular indoor staircase.

Conventionally, when performing interior work on walls, ceilings, etc. near indoor stairs, it was difficult to install stepladders or ladders in the middle of the stairs, so for example, steel pipes were appropriately framed as work platforms. be. However, such a conventional method not only wastes time in assembling the workbench, but also poses problems in terms of safety due to poor robustness. In response to this, a workbench for stairs according to Utility Model Application Publication No. 55-94333 has been proposed, but when this is used for a staircase that turns back in a rectangular shape, it must be installed only on one part of the staircase. As a result, when constructing the entire wall or ceiling near the staircase, it is inconvenient to have to move it many times.

Therefore, this invention is convenient for storage and transportation, easy to assemble,
It was devised to provide a dedicated workbench for staircases that can be easily dismantled and provide a wide working space. In a workbench that is formed by assembling supporting columns and horizontal bars that connect each column, the protrusions formed on both ends of the horizontal bars are attached to the receivers formed on each column, and the protrusions formed on both ends of the treadle are attached to the receivers formed on each column. The present invention consists in that each support can be freely fitted into and removed from a receiving portion formed on a horizontal rod or a support, and that the length of each support is gradually shortened.

Below, an embodiment of the present invention will be described according to the drawings. The present invention consists of four steel columns 1, a plurality of steel horizontal bars 2, 3 connecting each column 1, and three treads 4. It is formed.

The pillar 1 in the illustrated example is bent at the upper part and has a substantially inverted L shape.
A substantially rectangular base plate 5 is formed at the lower end, and receiving portions 6 are formed at appropriate intervals in the height direction on the side surface of the column 1 itself, and a tread plate 4, which will be described later, is supported at each corner portion. It is something to do. The receiving part 6, which is made by bending and fixing a small steel plate into a groove shape, is formed into a rectangular tube shape with a slightly wider upper part. In addition, by attaching a hinge 7 to the upper bent end of the column 1 and connecting the two columns 1 to each other, the entire structure is made more robust, and by making it possible to fold the hinge 7 from the attachment part, it can be stored easily. , to facilitate transportation and assembly.

On the other hand, in order to maintain the horizontal state of the tread 4, the length of each support 1 is formed to become gradually shorter in accordance with the step or inclination of the stairs, and in the illustrated example, the length of each support becomes gradually shorter in the counterclockwise direction. By setting it to 1,
It is used for stairs that lead counterclockwise to the upper floors.
However, when used for a staircase leading clockwise to the upper floor, it is sufficient to simply assemble the entire structure by turning each support column 1 in the illustrated example in the opposite direction. There is no need to build a support.

By the way, when the workbench according to the present invention is used on a standardized dog-shaped staircase in a unit house, etc., the length of each support post 1 may be determined according to the step or slope of the staircase. But the third
As in the other embodiment shown in the figure, if the length of each support post 1 can be freely adjusted by inserting the telescopic rod 8 into the support post 1, appropriate installation and use will be possible even for different types of stairs. Become.

The horizontal rod 2 is a connecting means for each support column 1, and is attached by fitting protrusions 9 formed at both ends into the receiving portions 6. Like the receiving part 6, the protruding piece 9 is made by bending a small steel plate into a groove shape in cross section and fixing it so as to fit onto both ends of the horizontal rod 2, and its lower part is fitted inside the receiving part 6. It is formed into a roughly wedge shape to match the shape. Therefore, it becomes easy to fit into and remove from the receiving part 6,
In addition, rattling of the fitting portion during use is also prevented. A receiving portion 6 similar to that fixed to the column 1 is fixed between both ends of each of a pair of horizontal rods 3 which are attached to the upper part of the column 1 so as to face each other.

The treadle 4 is a substantially ladder-shaped steel member with a steel net plate 10 stretched on one side thereof, and the same protrusions 9 as the front side bars 2 are fixed to both ends of the long bar portion. The mounting method is also the same as that of the horizontal bar 2. In the illustrated example, three step boards 4 are used to facilitate transportation and assembly work. Therefore, it is possible to implement the present invention even if each step board 4 is connected with a hinge and made into a foldable type, and there is no problem even if the step board 4 is composed of one large step board 4. In the case of the latter embodiment, the horizontal bar 3 is not attached, and the protruding pieces 9 formed at each corner of the footboard 4 are made to be able to be fitted into and removed from the receiving parts 6 formed at the upper part of each column 1. The overall structure can be simplified.

The structure of the present invention is as described above, and since the length of each support 1 that supports the substantially rectangular tread 4 at each corner is gradually shortened, the workbench can be folded back into a rectangular shape. It is possible to secure a wide work space by spanning both indoor staircases, allowing interior work such as walls and ceilings near the stairs to be completed all at once, without having to move the workbench like in the past. I can do it. Naturally, since several people can perform various tasks at the same time on one workbench, economical effects can be expected due to improved work efficiency and shortened construction period.

In addition, the projecting pieces 9 formed on both ends of the horizontal bars 2 and 3 are fitted into the receiving parts 6 formed on the respective pillars 1, and the projecting pieces 9 formed on the tread plate 4 are fitted into the receiving parts 6 formed on the horizontal pillars 3 or the pillars 1, respectively. Since it is removable, it is easy to assemble and disassemble, and is extremely convenient for storage and transportation.

Furthermore, by attaching a telescoping rod 8 to each post 1 to adjust the length of the post 1, it can be used not only for a specific standardized type of stairs, but also to suit the steps or slopes of different types of stairs. Benefits accrue.

As explained above, the present invention brings about various excellent practical effects such as improving the efficiency of interior work in the vicinity of indoor stairs.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention.
The figure is a partially exploded perspective view, FIG. 2 is a perspective view showing the state of use, and FIG. 3 is a partially perspective view showing another embodiment. 1... Prop, 2, 3... Horizontal rod, 4... Treadboard, 5
...Base plate, 6...Receptacle, 7...Hinge, 8...
Telescopic rod, 9... protrusion, 10... net plate.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. In a workbench that is assembled and formed by a column that supports a substantially rectangular step board at each corner and a horizontal beam that connects each column, there is a protrusion formed at both ends of the horizontal beam. The projecting pieces formed at both ends of the tread can be freely fitted and removed into the receiving parts formed on each support, and the protruding pieces formed at both ends of the tread can be freely inserted into and removed from the receiving parts formed on the horizontal rod or support, respectively, and the length of each support is gradually shortened. A stair workbench characterized by a formed. 2. The stair workbench according to claim 1, which is a registered utility model, in which each support is equipped with an extensible rod to adjust the length of the support.