JPS5918069Y2 - telescopic long door - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a retractable long door used at temporary construction sites such as civil engineering construction sites and construction sites.

Conventionally, at such sites, board screens and the like have been installed around the site as a means to prevent danger and to prevent third parties from entering, but the overall weight makes it difficult to transport. However, since temporary installations are used at civil engineering construction sites and construction sites, simple installation devices are required, and permanent installations require high costs and work. It had the disadvantage that it could not achieve its purpose.

In view of this, the applicant has solved the above-mentioned drawbacks by providing a telescopic long door that can be easily folded, lightweight, and easily transported. If something falls from a height, it will bounce back in a nearly horizontal direction due to the repulsive force of the collision with the corner of the building, the ground, etc., and fly out of the gap between the lattice-shaped rods of the long door, landing on the road outside the construction site. This had the potential to pose a danger to passersby.

Although the probability that such a situation will actually occur is extremely low, the present invention is intended to eliminate the above-mentioned drawbacks from the standpoint of ensuring absolute safety. To explain, the late-autumn safety cover 1, which is made of cloth, leather, cloth netting, and other materials, is developed over the entire rear surface of a lattice-shaped rod 2, which is formed in two stages, front and rear, with pivoting and intersecting points, and the top of the rod 2. 3.3', 3"・
... Pawls 4.4' and 4" respectively at corresponding positions
-... are inserted into the insertion holes 5, 5', 5"...
... as shown in Figure 3)
3.3', 3"... long screw rod 6,6',6"・
...Insert the tip into the pawls 4.4', 4''..., and insert the pawls 4.4', 4''...
・Nuts 7a, 7a', 7a'' screwed on the front and rear surfaces・
...and 7 b, 7 b', 7b''...
7a)
, 7a', 7a'', . . . maintain a predetermined distance between the safety cover 1 and the rod 2.

As for the method of fixing the upper end of the safety cover 1 and the upper end of the rod 2, in addition to the method described above, as shown in FIG. At the same time, screw the screw hole 9 at the end of the rod 2 through the holes 3.3', 3'', etc., and fix the upper end of the safety cover 1 at the other end by means such as screwing. It's okay,
Alternatively, the upper end of the safety cover 1 and the upper end of the rod 2 may be simply tied together with a wire, or a hook-shaped hook may be attached to the upper end of the safety cover 1 and the hook may be attached to a predetermined position on the upper portion of the rod 2. Various known fixed lid or latching methods may be used.

Next, a pawl 10.10 is placed in a predetermined position at the bottom of the safety cover 1.
', 10''...... insertion hole 11.1
1'.

11"..., and bolts 12.12', 12"... at the bottom of the rod 2 are provided with chain fixing tools 13, 13' for every other bolt.

13'', and the series of chenos 14 are held in a slightly relaxed state with each chenos fixing tool 13, 13', 13
"...", and hook-shaped fixtures 15.
″... is installed.

Here, the fixing tools 15.15', 15"... and the insertion holes 11.11', 11" at the bottom of the safety cover 1 are used.
... are placed in corresponding positions,
Fixtures 15.15', 15'' as shown in Figure 5
The hooked rod part of... is inserted into the insertion hole 11, 11', 11''.
The pawl 10.10', 1 attached to...
0''..., thereby movably fixing the lower part of the safety cover 1 to the lower part of the rod 2 via the chain 14.

Note that both ends of the chino 14 are fixed to the lower part of the running rod 16 and the lower part of the fixed rod 17 of the extendable long door body.

Next, approximately J-shaped bar fittings 18, 18', 18", etc. are placed at the upper and lower intermediate positions on the rear surface of the rod 2 at predetermined intervals.
・Attach the metal fittings 18 and 18'.

Ventilation holes 19, 19', 19'', etc. are formed by cutting out the periphery of one portion of the safety cover corresponding to the safety cover 18''.

The shape, inner diameter, etc. of the ventilation holes 19.19', 19''... are not particularly limited, and the cannula fittings 18.18', 1
In embodiments that do not use 8''..., the cutout portion is not limited to the above.

In short, the present invention fixes the upper part of the late-autumn safety cover 1, which extends over the entire rear surface of the lattice-shaped rod 2, which is formed in two stages, front and rear, with intersecting pivots, at a predetermined position on the upper rear surface of the lattice-shaped rod 2. Therefore, there is no risk of construction materials, tools, etc. flying out from the openings of the lattice rods 2 onto the road outside the construction site due to an accident or worker's carelessness, posing a danger to passersby. is fixed to the chain 14 attached to a predetermined position on the lower rear surface of the lattice-shaped rod 2, so even if the vertical distance between the upper and lower fixing points of the safety cover 1 changes due to opening and closing of the extendable long door body, it can be moved via the chain 14. Since the lower fixing point that is fixed to the top and bottom can be adjusted up and down freely, there is a risk that the safety cover 1 will tear between the upper and lower fixing points due to excessive tension when the door is closed, and may become loose and double in the vertical direction when the door is opened. It can be completely prevented, and the safety cover 1 has ventilation holes 19, 19', 19"...
The practical effects of this, such as being able to alleviate wind pressure, etc., are tremendous because the notches are cut out.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the present invention. Fig. 1 is a partially cutaway rear view showing the state in which the safety cover is used, Fig. 2 is a view showing the main part of the same section taken along line X-X, and Fig. 3 is Figure 4 is a diagram showing how the safety cover is secured with bolts, Figure 4 is a diagram showing the other embodiment in which the safety cover is secured at the same location with fixing fittings, and Figure 5 is a diagram showing how the safety cover is secured with a chain. be.

Claims (1)

[Scope of utility model registration request] The upper part of the late autumn safety cover, which is spread over the entire rear surface of the lattice-shaped rod formed in two front and rear sections with intersecting pivots, is fixed at a predetermined position on the upper rear surface of the lattice-shaped rod, and the lower part is attached to the lower rear surface of the lattice-shaped rod. A retractable long door, which is fixed to a cenograph installed in a predetermined position, and has a ventilation hole cut out at an appropriate part of the safety cover.