JPH0245420Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an automatic door guide device in which the door main body, the upper part of which is suspended from a running rail, is opened and closed by traveling in a straight line.

As a general automatic door, the upper part of the door body is suspended on a running rail that spans the top of the doorway, and the door body is moved in a straight line along the running rail to open and close the doorway. There is an automatic door. Further, in this type of automatic door, if the lower side of the door body swings laterally, the automatic door cannot be opened and closed smoothly, so a guide device is provided to prevent the lower part of the door body from swinging laterally. However, as conventional guide devices of this kind, for example, a guide groove is formed in the floor of the doorway and the lower part of the door body is inserted into this guide groove, or a groove is formed in the lower end of the door body. Some devices insert a guide member protruding from the floor into this groove to prevent the lower part of the door from touching sideways. Since there was a slight gap and play, the door itself rattled while moving, making it difficult to open and close smoothly, and also causing noise.

This idea was made to improve the above-mentioned situation, and the purpose is that the lower part of the door body does not swing laterally, so it can be opened and closed smoothly, without making noise, and securely. The present invention aims to provide a guide device for an automatic door that can be opened and closed at any time.

Hereinafter, one embodiment of this invention will be described in detail based on FIGS. 1 to 3. In the figure, reference numeral 1 denotes a door body disposed at the doorway, and a roller (not shown) pivotally supported at the top of the door body 1 is connected to a running rail 3 spanning from the top of the doorway to the top of the door pocket 2.
The door 1 runs in a straight line (direction of arrows X and Y) along a running rail 3 to open and close the doorway.

Further, a guide device 4 is provided near the border between the doorway and the door pocket 2 on the lower side of the door body 1 to guide the lower side of the door body 1 and prevent it from swinging laterally. That is, both lower side plates 1a, 1a are made to protrude downward on both sides of the lower end of the door body 1, and these lower side plates 1
The guide device 4 is disposed within the groove 5 formed by the grooves 5a, 1a, etc., and the guide device 4 is constructed as shown in FIGS. 2 and 3.
That is, a support column 7 is planted on the floor 6 near the boundary between the entrance and the door pocket 2 so as to be placed in the groove 5. A substantially flat rotating arm 8 extending from side to side along the inside of the groove 5 is rotatably attached to the upper part of the support column 7 . Guide rollers 9a and 9b are rotatably attached to both ends of the rotary arm 8 via support shafts 8a and 8b, respectively. These guide rollers 9a, 9b
are in contact with the respective inner walls of both lower side plates 1a of the door body 1, and rotate along with the travel of the door body 1. Further, a coil spring 10 is attached to the support column 7.
is wrapped around it. This coil spring 10 always biases the rotating arm 8 to rotate in the direction of arrow Z, and each guide roller 9a, 9b is rotated toward both lower side plates 1.
The coil spring 10 is for elastic pressure contact with the inner walls of the coil springs 10 and 1a, and one end of the coil spring 10 is connected to the rotating arm 8.
The other end is attached to the support column 7.

Therefore, according to the automatic door guide device configured as described above, the coil spring 10 causes the two guide rollers 9a, 9b to move against both lower side plates 1 of the door body 1.
Since they are always in pressure contact with the inner inner walls of a and 1a with elastic force, there is no gap between the door body 1 and the guide rollers 9a and 9b, which prevents the door body 1 from swinging laterally or wobbling. The door main body 1 can be held reliably and well without any damage.
Furthermore, when opening and closing the door body 1, the guide rollers 9a and 9b are always in rolling contact with the inner walls of the lower plates 1a and 1a of the door body 1 while being pressed with elastic force, so that the door body 1 while it is running is It can be opened and closed smoothly without rattling.

In the above embodiment, the guide device is provided on the floor 6, and the guide device 4 is arranged in the groove 5 of the door body 1, but the invention is not limited to this, and for example, A guide groove may be provided in the floor 6, and a guide device provided at the lower end of the door body 1 may be placed in this groove.

Next, another embodiment of this invention will be described based on FIG. 4. Guide device 20 shown in this figure
are both lower side plates 1a provided at the lower end of the door body 1,
1a, two guide rollers 21a and 21b are in contact with the inner wall of one lower side plate 1a, and a guide roller 21c is in pressure contact with the inside of the other lower side plate 1a. That is, the guide roller 2
1a and 21b, a mounting arm 23 is swingably provided on the top of a support column 22 (not shown) planted on the floor, and support shafts 24a, 24a and 21b are provided at both ends of the mounting arm 23,
It is rotatably attached via 24b.
Further, the guide roller 21c has a support shaft 24c.
It is rotatably attached to a holding member 25 via a spring member 26, and this holding member 25 is attached to an intermediate location of the mounting arm 23 via a spring member 26. Therefore, the guide roller 21c is always urged in the direction of the arrow Z' by the spring member 26, and is brought into pressure contact with the inner wall of the lower plate 1a.
Further, each of the guide rollers 21a and 21b is pressed against the other lower plate 1 by the guide roller 21c.
It is designed to come into pressure contact with the inner wall of a. Even with the guide device 20 configured in this way, there are effects that are exactly the same as those of the above-described embodiment.

Next, still another embodiment of this invention will be described based on FIG. Guide device 3 shown in this figure
0 is such that both lower sides of the door body 1 are sandwiched between a fixed roller 31a and pressure rollers 31b and 31c. That is, the fixed roller 31a is rotatably attached to a support shaft 32 planted on the floor, and comes into contact with one outer wall of the door body 1. In addition, the pressure rollers 31b, 31c
is the rotating arm 3 via the support shafts 33a and 33b.
A spring member 35 is rotatably attached to both ends of the movable arm 34, and one end of the movable arm 34 is fixed to a mounting member (not shown) rising from the floor.
Therefore, the pressure rollers 31b and 31c are pressed against the other outer wall of the door body 1 by the spring member 35, and one outer wall of the door body 1 is pressed against the fixed roller. 31a.

In the guide device 30 configured in this way, the fixed roller 31a and the pressure rollers 31b, 31
Since both sides of the lower part of the door body 1 are elastically supported by the door body 1, the door body 1 can be held securely and well without sideways swinging or shaking, and the door body 1 can be held securely and well. When opening and closing the door body 1, each roller 31a, 31b, 31c
Since the door body 1 rotates as the door moves, the door body 1 can be opened and closed smoothly. In this case, since the two pressure rollers 31b and 31c are configured to press against the other outer wall of the door body 1 by the spring member 35,
Even if the opening and closing direction of the door body 1 deviates slightly, the pressure rollers 31b and 31c follow the deviation of the door body 1, so that the door body 1 can be opened and closed more smoothly.

In addition, in any of the above-mentioned embodiments, the roller was brought into pressure contact with the outer surface of the door body 1, but this invention is not limited to the roller in any way;
It is also possible to use a sliding member that smoothly slides on the outer or inner surface of the holder.

Further, in each of the embodiments described above, the guide devices 4, 20, and 30 were provided near the border between the doorway and the door pocket 2, but this invention is not limited to this.
A plurality of the guide devices 4, 20, 30 may be provided at more than one location. In this case, since the door body 1 is held at a plurality of locations, swinging and rattling of the door body 1 can be further prevented.

As explained above, according to the automatic door guide device according to the invention, at least one of the plurality of guide sliding members is elastically pressed against the lower side surface of the door body by a spring member to guide the door body. Therefore, there are advantages such as being able to reliably and effectively prevent the door body from swinging sideways and rattling, and also being able to open and close the automatic door smoothly.

[Brief explanation of the drawing]

Figure 1 is an external front view of the automatic door according to this invention.
Figure 2 is a sectional view of the main part, and Figure 3 is the − of Figure 2.
A line sectional view, FIG. 4 is a sectional view showing another embodiment,
FIG. 5 is a sectional view showing still another embodiment. 1... Door body, 4, 20, 30... Guide device, 9a, 9b, 21a, 21b, 21c, 31
a, 31b, 31c...roller (guide sliding member), 10, 26, 35...spring member.

Claims (1)

[Scope of utility model registration request] In an automatic door in which the upper part of the door body is movably suspended on a running rail and the door body is opened and closed by running in a straight line along the rail, on at least one lower side surface of the door body, A guide device for an automatic door, characterized in that at least one of a plurality of guide sliding members is elastically pressed by a spring member to guide an upper door body.