JPH0886169A - Gate opening / closing device - Google Patents

Abstract

(57) [Abstract] [Purpose] Especially, in a sliding gate opening / closing device without rails, the amount of bending of the gate is reduced, and when snow falls,
Make it possible to open and close the gate when it freezes. [Structure] In a gate opening / closing device in which a gate 5 is slidably held between guide rollers 10 and 11 provided above and below,
Since the groove 12 is engraved on the rolling surface of the guide roller, even if there is snow on the rolling surface of the guide roller of the gate, the snow is removed by the groove as the gate opens and closes, and there is no hindrance in opening and closing. Since one set and two guide rollers are provided on the lower side, the load is dispersed and the load on the guide rollers is reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gate opening / closing device provided at a doorway of a fence or the like, and more particularly to a slide type gate opening / closing device having no rail.

[0002]

2. Description of the Related Art When a sliding type gate opening / closing device is installed at an entrance / exit of a fence or the like, a gate opening / closing device of a type in which the gate is railed on a rail laid on the ground is used in a cold region where there is snow in winter. Is not suitable as it is difficult to open and close as the hardened snow fills the rails. For this reason, a non-rail slide type gate opening / closing device is installed without a rail in the gate opening / closing device installed in a situation where a volume is expected on a snowy country or on the ground.

A conventional non-rail slide type door opening / closing device will be described with reference to FIGS. 3 and 4. FIG.

In the figure, reference numeral 1 is a wall facing the entrance / exit 2, and the wall 1 has a required space above and below the wall 2, respectively.
Individual guide rollers 3 and 4 are rotatably provided on an upper shaft 8 and a lower shaft 9 which are erected on the wall 1, and a gate 5 is provided between the guide rollers 3 and 4, and the guide rollers 3 and 4 are provided. The gate 5 is slidably supported while maintaining a required height above the ground.

The guide rollers 3 and 4 are iron flanged rollers. An upper guide bar 6 and a lower guide bar 7 are fixed to the upper and lower surfaces of the gate 5 by welding or the like. It is fitted between the flanges of the guide rollers 3 and 4. Thus, the gate 5 slides with respect to the guide rollers 3 and 4 without falling off.

[0006]

In the conventional gate opening / closing device described above, the span of the gate 5 becomes long in the case where it is provided at the doorway where the width of the doorway where a large truck or the like comes in and out is large. For this reason, when the gate 5 is in a supporting state close to cantilever support in a closed state or an open state, the deflection of the free end of the gate becomes significantly large, and a large load acts on the lower guide roller. Occurs. Further, since the guide rollers 3 and 4 are made of iron, rust occurs, which causes a state where they do not rotate smoothly. Further, in winter, the upper surface of the upper guide bar 6 also has snow, but if snow removal is not performed each time it is opened and closed, the snow will be compressed every time it is opened and closed, and the compressed snow will be caught between the guide roller 3 and the upper guide bar 6. If the snow can not be opened and closed, and the snow is frozen further, it will be difficult to remove it, and a great deal of labor will be required to restore the opening and closing function.

In view of the above situation, the present invention is intended to reduce the amount of bending of the gate, and to open and close the gate during snowfall or during freezing without hindrance.

[0008]

SUMMARY OF THE INVENTION The present invention is a door opening / closing device in which a gate is slidably held between upper and lower guide rollers, and a groove is formed on a rolling surface of the guide roller. In addition, at least one guide roller provided on the lower side
The present invention relates to a gate opening / closing device addressed to two sets.

[0009]

[Effect] Even if there is snow on the rolling surface of the guide rollers of the gate, the snow is removed by the groove as the gate is opened and closed without hindering the opening and closing. Therefore, the load is dispersed and the load on the guide roller is reduced.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, the same components as those shown in FIGS. 3 and 4 are designated by the same reference numerals.

Two upper shafts 8 are erected on the wall 1 in the horizontal direction with a required space therebetween, and an upper guide roller 10 is rotatably fitted to the upper shaft 8. A total of four lower shafts 9 are erected below the upper shaft 8 for each of the upper shafts 8, and a lower guide roller 11 is rotatably fitted to the lower shaft 9. A gate 5 is provided between the upper guide roller 10 and the lower guide roller 11, and the upper guide roller 10 and the lower guide roller 11 are provided.
Thus, the gate 5 is slidably supported while maintaining a required height above the ground.

The upper guide roller 10 and the lower guide roller 11 are stainless steel flanged rollers, and grooves are formed on the rolling surfaces of the upper guide roller 10 and the lower guide roller 11, respectively.

An upper guide bar 6 and a lower guide bar 7 are fixed to the upper and lower surfaces of the gate 5 by welding or the like, and the guide bars 6 and 7 contact the upper guide roller 10 and the lower guide roller 11 and a flange. They are fitted in between. Thus, the gate 5 is the upper guide roller 1
0, the lower guide roller 11 does not fall off, and the upper guide roller 10 and the lower guide roller 11 slide with rotation.

As described above, since the lower guide rollers 11 are provided in a set of two, a total of four, the lower guide rollers 1 are provided.
The load acting on 1 is distributed, the load per set is reduced, and the life of the lower guide roller 11 is extended. Further, since the upper guide roller 10 and the lower guide roller 11 are made of stainless steel, rust is not generated, smooth rotation is maintained, and smooth opening and closing of the gate 5 is guaranteed.

Next, even if there is snowfall and freezing in the winter, and the top guide bar 6 has snow on it, the gate 5 slides,
When the upper guide roller 10 rolls on the upper guide bar 6, snow and ice are removed in the groove 12, and snow and ice are prevented from being caught between the upper guide roller 10 and the upper guide bar 6. It Therefore, during the snowfall, even if the snow removal work is not frequently performed, the opening and closing of the gate 5 will not be hindered.

Further, although not particularly shown, by making the gate 5 into a truss-assembled structure, the strength of the gate 5 itself can be increased, and a wide frontage can be accommodated.

In the above embodiment, the guide rollers are provided only for one set and two sets only on the lower side. However, the guide rollers may be provided for two sets each for the upper side as well.

[0019]

As described above, according to the present invention, it is possible to open and close the gate without hindrance without frequent snow removal work and freezing ice removal work during snowfall, and the burden on the guide rollers. It also has the excellent effect of reducing the bending of the gate and improving the appearance.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a view as viewed in the direction of arrows AA in FIG. 1;

FIG. 3 is a front view showing a conventional example.

FIG. 4 is a view taken along the line BB of FIG.

[Explanation of symbols]

 1 Fence 5 Gate 6 Upper guide bar 7 Lower guide bar 8 Upper shaft 9 Lower shaft 10 Upper guide roller 11 Lower guide roller 12 Groove

Claims (2)

[Claims] 1. A gate opening / closing device in which a gate is slidably held between upper and lower guide rollers, wherein a groove is formed on a rolling surface of the guide roller. . 2. The gate opening / closing device according to claim 1, wherein at least two guide rollers provided on the lower side are addressed to one set and two guide rollers.