JPH0217112Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a door support fitting for an automatic door that opens and closes by traveling in a straight line and pulls the automatic door closer just before closing.

Generally, automatic doors that travel in a straight line and open and close automatically are widely used. In addition, in order for an automatic door that runs in a straight line to run smoothly, a slight gap is required between the automatic door and the inner wall surface, etc., but if there is a gap when closing, indoor air will escape. Therefore, it is not suitable for automatic doors in hospitals, freezers, etc. On the other hand, if you eliminate the gap between the automatic door and the inner wall,
If these things come into contact, the automatic door may not move smoothly. For this reason, recently, automatic doors have been used that move in a straight line and are brought into contact with an inner wall surface, etc., just before closing, to ensure a secure seal when the door is closed. In addition, such an automatic door must firmly support a considerably heavy automatic door body, be relatively simple in construction, and allow the automatic door to run smoothly.

This idea was devised in view of the above circumstances, and its purpose is to make it possible to smoothly open and close an automatic door, to ensure a secure seal when closed, and to improve the structure. To provide a door support fitting for an automatic door that can relatively simply and firmly support the automatic door, and can be manufactured easily and inexpensively.

This invention will be explained below based on embodiments shown in the drawings. In the figure, reference numeral 1 denotes a metal fitting main body having a flat plate shape, and a support member 2 formed by bending into an "L" shape is fixed to the lower part of this metal fitting main body 1 by welding or the like. A hole 2a is formed in the center of the support member 2, and the first shaft 3 is inserted into the hole 2a from below.
Screw the nut 4 onto the upwardly protruding part, and
Attach the shaft 3 to the support member 2. Further, the lower side of the first shaft 3 is inserted into a hole formed at the end of the link arm 7, and the link arm 7 of the first shaft 3 is inserted into the hole formed at the end of the link arm 7.
Radial bearings 5, 5 and thrust bearings 6, 6 are attached to the upper and lower sides of the shaft, respectively, and a link arm 7 is rotatably attached to the first shaft 3. Further, the second shaft 8 is inserted through the hole formed at the other end of the link arm 7, and the link arm 7 of the second shaft 8 is inserted.
Radial bearings 9, 9 and thrust bearings 10, 10 are attached to the upper and lower sides of the link arm 7, and nuts are tightened from the ends thereof, and the second shaft 8 is rotatably attached to the link arm 7. Further, a "T" shaped fixing plate 11 is fixed to the lower end of the second shaft 8, and the automatic door main body 12 is attached to this fixing plate 11.

Then, when the support roller 13 that is pivotally supported on the upper side of the metal fitting main body 1 is brought into contact with the rail 14 and this support roller 13 runs on the rail 14, the automatic door main body 12 supported by this support roller 13 is rotated. As shown in FIG. 4, the guide roller 15 runs in a straight line (direction of arrow A) to open and close the door, and when the automatic door body 12 is just about to close, the guide roller 15 rolls into contact with and presses the outer surface of the automatic door body 12. Place.

To explain the operation of the device configured as described above, the support roller 13 runs on the rail 14, and the automatic door body 12 supported by the support roller 13 runs in a straight direction (in the direction of arrow A). to open and close. At this time, as shown in FIG.
The vehicle is always parallel to the vehicle and runs smoothly without coming into contact with walls, etc. Then, just before the automatic door body 12 closes, the guide roller 15
The outer surface of the automatic door body 12 is pressed, and the third
As shown in the figure, since the link arm 7 rotates about the first and second axes 3 and 8, the automatic door main body 12
is drawn toward the inner wall surface 16, and as shown in FIG. 4, the automatic door main body 12 comes into close contact with the inner wall surface 16, and when the automatic door main body 12 is closed, it is possible to reliably seal.

As described in detail above, this invention pivots a support roller that runs on a rail in rolling contact with a flat metal fitting body, and a first shaft that is attached to the lower part of this metal fitting body via a support member. The lower part of the link arm is inserted through the link arm, radial bearings and thrust bearings are provided on the upper and lower sides of the link arm of the first shaft, and the link arm is rotatably mounted, and the link arm is inserted through the other part of the link arm. A radial bearing and a thrust bearing are provided on the upper and lower sides of the link arm of the provided second shaft, and the second shaft is rotatably mounted, and the link arm is attached to the lower part of the fixed plate fixed to the lower end of the second shaft. This is characterized by a fixed automatic door body.
Therefore, just when the automatic door is about to close, the link arm automatically rotates to pull the automatic door closer, making it possible to close the door reliably, and also allowing smooth opening and closing operations of the automatic door. In addition, the configuration is relatively simple, as it is only necessary to connect the metal fitting body and the automatic door body using the first and second shafts and link arms rotatably attached to these via radial bearings and thrust bearings. The automatic door can be supported firmly and easily, and can be manufactured easily and inexpensively.

[Brief explanation of the drawing]

FIG. 1 is a partially exploded perspective view showing an embodiment of this invention, FIG. 2 is a side view thereof, FIG. 3 is a plan view thereof, and FIG. 4 is a plan view illustrating its operating state. 1...Metal fitting body, 2...Supporting member, 3...First
shaft, 5, 6... bearing, 7... link arm, 8
... Second shaft, 9, 10 ... Bearing, 11 ... Fixed plate, 12 ... Automatic door body, 13 ... Support roller,
14...Rail, 15...Guide roller.

Claims (1)

[Scope of utility model registration request] The automatic door supported by the door support bracket is opened and closed by running in a straight line along the rail, and just before closing, the side of the automatic door is pressed by a guide to move the automatic door in a direction perpendicular to the direction of movement. In an automatic door that is moved to pull the automatic door closer, a support roller that runs on a rail is supported by a flat metal fitting body, and is attached to the bottom of this metal fitting body via a support member. The lower side of the first shaft is inserted through the link arm, and radial bearings and thrust bearings are provided on the upper and lower sides of the link arm of the first shaft to rotatably attach the link arm. A radial bearing and a thrust bearing are provided on the upper and lower sides of the link arm of the second shaft that is provided through the other part, and the second shaft is rotatably attached and fixed to the lower end of the second shaft. A door support fitting for an automatic door, characterized in that an automatic door body is fixed to the lower part of a fixed plate.