JPH0552399B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a clean space, a so-called clean room, used in the manufacture of precision instruments, electronic parts, pharmaceuticals, etc.

<Conventional technology> Clean rooms are currently used in the electronics industry, pharmaceutical industry,
It is used in the biotechnology industry to ensure an ultra-clean environment. In order to keep the inside of a clean room super clean, the air must be
It is distributed indoors through a HEPA filter.

This clean room is provided with openings for the entry and exit of people and the intake and removal of articles, etc. These openings are provided with doors, and are always in an airtight state when the door is closed.

<Problems to be solved by the invention> As a door usually installed at an entrance/exit opening,
There are sliding door types and closed door types. In any case, this type of hanging door or hinged door itself is formed to protrude or retract from the surrounding wall surface forming the opening.

During this isotropic opening and closing, especially in the case of a hanging door, if the swing of the door becomes large due to the closing operation, there is a problem that the door cannot be closed in an airtight state.

On the other hand, in the airflow system of a clean room, for example, a vertical or horizontal laminar flow system may be used. In this laminar flow system, unevenness on the indoor side of the hanging door or hinged door provided at the entrance/exit opening causes variations in airflow velocity, causing turbulence in the laminar flow inside the clean room. This turbulence causes pollutants from the floor and walls to be scattered again, reducing cleanliness.

<Means for Solving the Problems> The present invention has been made in order to solve the above problems, and the opening of the entrance/exit is opened and closed by a hanging door, and when the door is closed, the hanging door opens and closes. is housed in the opening so that the hanging door and the wall surface on the indoor side of the opening are substantially flush with each other.

<Function> In a clean room, the smooth ceiling and inner wall surfaces, as well as the wall surfaces around the hanging door and the opening, are smooth, so no turbulence occurs in the clean room in either the direct current or horizontal laminar flow system. Therefore, contaminants are not scattered again from the floor, walls, etc., and a high degree of cleanliness can be achieved.

Moreover, it is easy to close the door airtight due to the steadying effect when the door is closed.

<Example> The clean room of the present invention will be explained in detail below based on the drawings.

Figure 1 shows the entrance and exit opening O of the clean room CR.
FIG. That is, an entrance/exit opening O is formed by the side walls W ₁ , W ₂ and the downward wall W ₃ ,
A hanging door 1 is provided at the top via an upper frame _W4 .
The hanging door 1 is opened by running to the right as viewed in the drawing, and closed by running to the left. FIG. 2 is a schematic cross-sectional view taken along the line X--X in FIG. 1. Both side walls W ₁ and W ₂ are made by bending plates made of steel, aluminum, stainless steel, etc. into appropriate panel shapes, and have a hard urethane-injected foam material, paper core, metal core, etc. built-in as a core material inside to provide insulation and sound insulation. fulfill a function.

On the other hand, the hanging door 1 also has a panel body made of substantially the same material and the same thickness. As will be described later, when this hanging door 1 is open, it moves further to the right from the position shown by the two-dot chain line, and when the door is closed, it becomes the hanging door 1 shown by the solid line, and is placed in the frame of the side walls W ₁ and W ₂ . gasket provided
It comes into contact with G ₁ and G ₂ and becomes air tight.

Next, Fig. 3 is a schematic cross-sectional view taken along the Y-Y arrow in Fig. 1.
The traveling function, pulling function, and steady rest function of the hanging door 1 will be explained with reference to the drawings.

An upper frame W ₄ is provided below the descending wall W ₃ , and this upper frame W ₄ has a width at least twice as thick as the suspension shape 1 . Moreover, in the clean room indoor side CRI, the side wall W ₁ , It is approximately flush with W ₂ and the downward wall W ₃ . In addition, in the clean room outdoor CRO, the thickness of the hanging door 1 protrudes in order to open the door. upper frame
A pair of traveling mechanisms 2, 2 are provided above the hanging door 1 in _W4 . This traveling mechanism 2 has an axle 22 disposed on a square-shaped bearing flange 21, and a door roller 23 is attached to each axle 22. Then, each door roller 23 is placed on a pair of rails 24 installed within the upper frame _W4 and parallel to the opening O. On the other hand, each axle 22 is provided with a slide bearing 31, and the hanging door 1 is attached to this slide bearing 31 via a bracket 11 and a hanging base 12.

Next, the drawing mechanism 3 will be explained with reference to a schematic plane cross-sectional view in FIG. 4 and a schematic side cross-sectional view in FIG. As the pulling mechanism 3, a link plate 32 is pivotally supported on the above-mentioned slide bearing 31 via a pin P, and another link plate 3 is connected to this link plate 32.
3 at a predetermined angle by the fixed shaft 34, for example 120
A pulling wheel 35 is formed at the tip of the link plate 33 so as to maintain the angle. Towing car 35
The slide bearing 31 can be slid along the axle 22 by coming into contact with the door stop guide 4 when the door is closed.

Furthermore, as the steady rest mechanism 5, a guide plate 51 is arranged on the lower surface of the upper frame _W4 , and a guide wheel 53 provided on the hanging base 12 is arranged in a guide groove 52 provided in this guide plate 51. To prevent upper swing when a door 1 runs and is drawn. Further, the swinging of the lower part in the above state is achieved by drying the slide groove (not shown) of the steady rest cover 13 on the guide roller 6 provided near the indoor side wall.

Next, the running and drawing drive of the hanging door 1 will be explained with reference to FIGS. 4, 5, and 6.

First, when the sliding door 1 is pulled in the direction of the entrance/exit opening O, the hanging door 1 runs (toward the left side in FIG. 1) via the door roller 23 on the rail 24. Finally, the pulling wheel 35 comes into contact with the door stop guide 4.
During this contact, the link plates 32 and 33 always maintain a predetermined angle, so if the pulling wheel 35 moves in the A direction with respect to the door stop guide 4, the fixed shaft 34 moves in the B direction and links Slide the slide bearing shaft 31 onto the axle 22 via the plate 32. That is, the pin P moves in the C direction. In this way, the pulling wheel 35 and the pin P draw the locus shown by the two-dot chain line, and the hanging door 1 similarly closes in the state shown by the two-dot chain line. At this time, a guide wheel 5 provided at the top of the hanging door 1 as shown in FIG.
3 travels along the guide groove 52 together with the door wheels 23, 23, and moves in the direction D within the guide groove 52 in synchronization with the movement of the pulling wheel 35, thereby preventing swinging. Therefore, as shown in Fig. 3, the hanging door 1 has side walls W ₁ ,
W ₂ and the descending wall W ₃ , and in the clean room interior CRI, the side walls W ₁ , W ₂ and the descending wall W ₃ , as well as each indoor side surface of the hanging door 1 are approximately flush with each other. Furthermore, if the gasket G ₃ provided on the lower surface of the hanging door 1 is dropped using a link-type dropping device (not shown), this gasket G ₃ along with each gasket G ₁ and G ₂ will ensure air tightness at the entrance/exit opening O. maintained.

<Effects of the Invention> As explained above, in the clean room of the present invention, when the hanging door is closed, it is drawn into the opening as it moves, making each surface on the inside of the room flush. It does not cause turbulence or the like. Therefore, there is no variation in airflow velocity within the clean room, and contaminants from the walls and floor are not scattered again, making it possible to provide a clean room with extremely high cleanliness.

Moreover, since both the upper and lower parts of the hanging door are prevented from swinging when closed, an airtight state can be maintained easily and reliably.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing the entrance/exit opening of the clean room, Fig. 2 is a schematic cross-sectional view taken along the line X-X in Fig. 1, Fig. 3 is a schematic cross-sectional view taken along the Y-Y line in Fig. 1, and Fig. 4 is a schematic cross-sectional view taken along the Y-Y line in Fig. 5 is a schematic cross-sectional view of the same side, FIG. 6 is a schematic cross-sectional view of the same side, and FIG. 7 is a schematic cross-sectional view of the same side.
It is a figure explaining a steady rest mechanism. DESCRIPTION OF SYMBOLS 1... Hanging door, 2... Traveling mechanism, 21... Bearing flange, 22... Axle, 23... Door roller, 24...
...Rail, 3...Pulling mechanism, 31...Slide bearing, 32, 33...Link plate, 3
5...Pulling car, 4...Door stop guide, 5...
Steady rest mechanism, 51... Guide plate, 52... Guide groove, 53... Guide car, CR... Clean room, CRI... Clean room interior, CRO... Clean room outdoor, W ₁ , W ₂ ... Side wall, W ₃ ……
Downward wall, O... entrance/exit opening.

Claims (1)

[Scope of Claims] 1. An entrance/exit opening is opened and closed by a hanging door by a traveling mechanism, and when the door is opened by a pulling mechanism, the hanging door is placed on the outside of the wall around the opening, and the door is closed. When the hanging door is housed in the opening, the indoor side surface of the hanging door and the indoor wall surface around the opening are made substantially flush with each other, and a steadying mechanism is used to prevent the door from moving when the door is running. In a clean room that prevents swinging of a hanging door when it is pulled in, the traveling mechanism has an upper frame that is disposed substantially flush with the indoor wall surface around the opening and has a width at least twice the thickness of the hanging door; A pair of rails provided in the longitudinal direction within the upper frame; a door roller attached to both ends of an axle disposed on a bearing flange shaped like the shape and rolling on each of the rails; and a door roller provided slidably on the axle. The drawing mechanism includes a link plate having one end pivotally supported by the slide bearing bearing, and a link plate fixed to the other end of the link plate, and a sliding door is suspended from the lower part of the slide bearing bearing. another link plate that holds a predetermined angle with the plate; and the slide bearing is moved through both link plates by abutting against a door stop guide provided at the other end of the other link plate and attached to the upper frame. The steady rest mechanism includes a pulling wheel that slides a bearing along the axle, and the steady rest mechanism includes a guide plate that is disposed on the lower surface of the upper frame and has a guide groove that is inclined toward the indoor side, and a guide plate that is disposed on the lower surface of the upper frame and has a guide groove that is inclined toward the indoor side. a guide wheel provided and arranged in the guide groove; a guide roller provided on the floor on the outside of the wall surface surrounding the opening; and a slide groove provided at the lower part of the hanging door and into which the guide roller is inserted. A clean room characterized by: