JPH0334475Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an airtight door.

As an airtight door in a clean room, etc., the present applicant has provided a sliding door that can be pulled out from the door bag to the vertical frame in a hanging state on the upper frame via a hanging wheel running on a guide rail, and the sliding door can be pulled toward the airtight room side to close the door. We proposed a device equipped with a drawing means for sealing.

The purpose of the present invention is to prevent dust from accumulating on the guide rail, prevent this dust from entering the airtight chamber when the sliding door is closed, and maintain airtightness.

The sliding door in the airtight door of the present invention can be pulled out from the door pocket to the vertical frame in a suspended state via a hanging wheel on the upper frame, and opens and closes the opening from the door pocket to the vertical frame. A hanging wheel chamber is provided within the upper frame, and the inner bottom of this hanging wheel chamber is a guide rail on which the hanging wheel runs, and a guide groove is formed on the opening side and in the running direction of the sliding door. The hanging wheel is attached to a support plate extending from the sliding door through a guide groove into the hanging wheel room. A sealing member having a length reaching at least from the vertical frame side end of the door pocket to the vertical frame is attached to the opposing surface of the guide groove, and the opposing end portions of both sealing members are in contact with both sides of the support plate, respectively. , the inside of the hanging vehicle is sealed. Pulling means for drawing the sliding door toward the airtight room are provided on both upper and lower sides of the sliding door, and when the sliding door is closed, the sliding door is moved toward the airtight room by the operation of the drawing means to seal the door. The drawing means includes an upper guide roller, an upper drawing rail, a lower guide roller, and a lower drawing rail. The upper guide rollers are rotatably supported at the upper end of the sliding door and spaced apart from each other at both ends in the running direction, with a support shaft as the center of rotation. The upper pulling rail is provided with bent parts bent toward the airtight chamber by a predetermined length at two places, the middle part and the end on the side of the vertical frame, and the upper guide roller runs on this upper pulling rail. It is free. The lower guide roller is attached to the floor on the rear end side of the sliding door in the closed state, with the support shaft as the center of rotation. The lower pull rail is fixed to the lower end of the sliding door, and has a bent portion bent outward by a length equal to the bent length on the rear end side, and the lower guide roller is fixed to the lower end of the sliding door. The position where the upper guide roller transitions to the bent portion and the position where the upper guide roller transitions to the bent portion of the upper pulling rail coincide with each other above and below the sliding door.

A dropping means is provided on the upper side of the sliding door to bring the lower end of the sliding door into contact with the floor. This drop-in means has two drop-in grooves formed at the intermediate portion of the guide rail and at the end of the vertical frame, into which the hanging wheel is dropped, and the depth of the drop-in groove is , the distance between the lower end of the sliding door and the floor is set to be equal to or greater than the distance between the lower end of the sliding door and the floor.

Embodiments of the present invention will be described below based on the drawings.

In Figures 1 to 3, the sliding door 1 can be freely moved from the door pocket 2 to the vertical frame 4 in a hanging state on the upper frame 3, and in the closed state, the clean room 5 side (left side in Figure 2) is moved from the clean room 5 side (left side in Figure 2) to the outside 6 side ( Seal from the right side). As shown in FIG. 2, a support plate 7 with a T-shaped cross section stands up at the upper end of the sliding door 1, and this support plate extends into the hanging wheel chamber 8 provided in the upper frame 3 and is located inside the room. Bearing 1 with built-in slide bearing 9 at the upper end
0 is installed. A hanging wheel 12 is rotatably attached to both ends of a shaft 11 which is supported by this bearing. Both suspended wheels can run freely on guide rails 13, 13 provided on both sides of the inner bottom of the suspended wheel chamber 8. The guide rails are fixed to mounting frames 14, 14 that cover the upper part of the sliding door 1 from both sides of the lower part of the upper frame 3, and to the side inner surface of the upper frame. The bottom central portion of the hanging wheel chamber 8 is open toward the sliding door 1, and has a downward guide groove 15 of approximately the same length as the upper frame. The support plate 7 passes through this guide groove and is freely movable within the groove. On the opposite surface of the guide groove 15, there are shown in FIG.
As shown in FIGS. 2 and 4, holding members 16, 16 of a channel type and long enough to reach the vertical frame 4 from the vertical frame side end of the door pocket 2 are fixed to each holding member. Brush-shaped synthetic resin sealing members 17, 17 are attached over the entire area. Both sealing members 17,
The tip side portion 17 is in contact with both sides of the support plate 7 and seals the inside of the hanging wheel chamber 8.

Further, upper guide rollers 19, 19 are rotatably supported at the upper ends of both sides of the sliding door 1, with the support shaft 18 as the rotation center, as shown in FIGS. 2 and 5.
This guide roller can run freely within an upper drawing rail 20 provided on the inner surface of the mounting frames 14, 14. This upper pull rail has bent portions 20a, 20a which are bent toward the clean room 5 side by a length L at two points, the middle portion and the end portion on the side of the vertical frame 4.
(Fig. 5), and this bent part is the sliding door 1
This is for pulling the sliding door toward the left in FIG. 2 at the same time as closing, so that the surfaces of the upper side and both sides of the sliding door are brought into close contact with the airtight material 21 fixed to the upper frame 3, vertical frame 4, and door pocket 2. Also, a pulling means is provided on the lower side of the sliding door 1 to pull the sliding door toward the clean room 5 side. That is, as shown in FIGS. 1 to 3, a support shaft 23 is provided upright on the floor 22 surface on the rear end side of the sliding door 1 in the closed state, and the support shaft 23 has a support shaft 23 with the shaft as the center of rotation. A lower guide roller 24 is attached. This lower guide roller is a guide path 25a of a lower drawing rail 25 with an opening at the lower end fixed in the lower side of the sliding door 1.
The interior can be freely moved in relation to the sliding door. A bent portion 25b is formed on the rear end side (left side in FIG. 3) of the guide path 25a and is bent toward the outside 6 by a length equal to the above-mentioned length L. Kaidrolla 24
The path is changed by passing through the bent portion 25b, and when changing to the clean room 5 side, the sliding door 1 is drawn toward the clean room side and can come into close contact with the airtight material 21. The position where the lower guide roller 24 moves to the bending part 25b of the lower drawing rail and the position where the upper guide roller 19 moves to the bending part 20a of the upper drawing rail coincide with each other above and below the sliding door 1. The pulling action on the upper side and that on the lower side can be performed at the same time.

In addition, there are second and third
As shown in the figure, a side drawing block 26 is fixed, and a corner of the side surface of the tip end of the sliding door 1 is slidably abutted on an inclined surface 26a provided on each side drawing block. As the sliding door 1 is closed, the corner of the sliding door comes into contact with the inclined surface 26a and slides on this inclined surface toward the vertical frame 4, so that the sliding door is drawn toward the clean room 5. By providing the side pulling blocks, the pulling operation of the upper and lower parts of the sliding door 1 can be performed even more smoothly. It should be noted that the side pulling means may be constructed in a band shape instead of a block shape.

Further, a lower airtight material 21a (FIG. 2) is attached to the lower side of the sliding door 1 over its entire length. The airtight material is inserted between the side of the lower draw rail 25 and the side plate of the sliding door 1, and a predetermined distance is left between the lower surface of the airtight material and the floor 22 surface. The airtight material 21a is the sliding door 1
Floor 22 is lowered by lowering the sliding door using the dropping means.
Can be pressed against the surface.

To explain this drop-in means, the first,
As shown in Figure 2, hanging wheels 12,
Dropping grooves 13a, 13a for dropping 12
has been formed. The depth of this drop-in groove is set to be greater than or equal to the distance between the airtight material 21a and the surface of the floor 22.

Next, how to use it will be explained.

When the sliding door 1 is pulled out from the door pocket 2 towards the vertical frame 4, the hanging wheel 12 runs on the rail 13, the upper guide roller 19 runs on the upper pulling rail 20,
Eventually, when the sliding door is about to close, the fifth
As shown in the figure, the guide roller moves to the bent part 20a of the upper drawing rail, and at the same time the lower guide roller also moves to the bent part 25b of the drawing rail,
Eventually, the upper guide roller enters the bent part 20a and moves parallel to the clean room 5 side by a distance equal to the length L, so the upper part of the sliding door 1 is forcibly drawn toward the clean room side, and the lower guide roller 24 is also pulled downward. Since it enters the bent part 25b of the rail, the lower part of the sliding door is forcibly drawn towards the clean room side, and when the sliding door contacts the vertical frame 4 and closes, the upper side and both sides of the sliding door are moved toward the clean room side as shown in Fig. 3. As shown in the figure, the sliding door is in close contact with the upper frame 3, the vertical frame 4, and the door pocket 2, and the sliding door seals the clean room door except for the lower side.

The space between the lower side of the sliding door 1 is sealed by the hanging wheel 12 falling into the groove 13a of the guide rail 13 at the same time as the sliding door is closed. This is done by pressing against the surface. As a result, when the door is closed, all four sides of the sliding door 1 are in close contact with the upper frame 3, the vertical frame 4, the door pocket 2, and the floor 22 through the airtight materials 21 and 21a, ensuring the airtightness of the clean room 5. Hold.

Another embodiment of the hanging wheel chamber is shown in FIG. In this example, the hanging wheel chamber 8a is provided on the clean room side (left side) of the sliding door 1, and the inside of the upper frame 3 is formed by a mounting frame 27 and a mounting frame 28, and the guide groove 15a is formed horizontally. The hanging wheel 12a is attached to the mounting frame 2
It can run freely on a guide rail 27a formed integrally with 7. 27b is a drop groove provided in the guide rail. A sealing member 17a is provided on the opposing surface of the guide groove 15a via holding members 16a, 16a.
17a is attached, and the tip sides of both sealing members are in contact with both sides of a support plate 7a attached to the sliding door 1 and cantilevering the hanging wheel 12a. An upper guide roller 19a attached to a support shaft 18a at the upper end of the sliding door 1 can freely run within a pulling rail 29 fixed to the inner surface of the upper frame 3. 29a is a bent portion provided on the pulling rail 29.

As explained above, according to the present invention, since the hanging wheel chamber is sealed with the sealing member, dust does not accumulate on the guide rail, and dust does not enter the airtight chamber when the door is closed. Therefore, for example, in a clean room, the cleanliness level will not be reduced.
The airtightness of the airtight room is maintained by providing a pulling means for pulling the sliding door toward the airtight room and a dropping means for bringing the lower end of the sliding door into contact with the floor, so that the airtight room can be sealed when closed. can.

[Brief explanation of the drawing]

Fig. 1 is a front view, Fig. 2 is an enlarged sectional view taken along the line shown in Fig. 1 at the position of the sliding door indicated by the chain line in Fig. 1;
3 is an enlarged sectional view taken along the line of FIG. 1, FIG. 4 is a perspective view of the sealing member, FIG. 5 is an explanatory diagram showing the positional relationship between the upper guide roller and the upper drawing rail when the door is closed, and FIG. FIG. 6 is a sectional view of a main part of another embodiment. 1...Sliding door, 3...Top frame, 4...Vertical frame, 5...
...airtight room (clean room), 6...external, 7,
7a... Support plate, 8, 8a... Hanging wheel chamber, 12, 1
2a... Hanging wheel, 13, 27a... Guide rail,
13a, 27b...Drop groove, 14, 27, 2
8...Mounting frame, 15, 15a...Guide groove, 1
7, 17a...Sealing member, 19, 19a...Upper guide roller, 20, 29...Upper drawing rail, 20a, 29a...Bending portion, 21, 21a...
... airtight material, 22 ... floor, 24 ... lower guide roller, 25 ... lower pull rail, 25b ... bending part.

Claims (1)

[Scope of Claim for Utility Model Registration] A sliding door is provided on the upper frame, which can be pulled out from the door pocket to the vertical frame in a suspended state via a hanging wheel, and has a space between the lower end and the floor, A hanging wheel chamber is provided within the frame, the inner bottom of which is a guide rail on which the hanging wheel runs, and a guide groove is formed on the opening side in the running direction of the sliding door, and the hanging wheel is moved from the sliding door through the guide groove. A sealing member is attached to a support plate extending into the room, and on the opposite surface of the guide groove, a sealing member having a tip portion touching each surface of the support plate and having a length reaching from the end of the vertical frame side of the door bag to the vertical frame is attached. Attachment: Pulling means for pulling the sliding door toward the airtight room are provided on both the upper and lower sides of the sliding door, and a dropping means is provided on the upper side of the sliding door for bringing the lower end of the sliding door into contact with the floor; The pulling means includes an upper guide roller, an upper pulling rail, a lower guide roller, and a lower pulling rail. The upper draw rail is supported rotatably around a support shaft, and the upper draw rail has a bent portion bent toward the airtight chamber side by a predetermined length at two points: the middle portion and the end portion on the side of the vertical frame. The upper guide roller is movable, the lower guide roller is attached to the floor on the rear end side of the sliding door in the closed state with a support shaft as the center of rotation, and the lower pulling rail is attached to the floor at the rear end of the sliding door in the closed state. The lower guide roller is fixed to the lower end of the rail, and has a bent portion bent outwardly on the rear end side by a length equal to the bent length, and the position where the lower guide roller transitions to the bent portion of the lower pull rail. and the position where the upper guide roller moves to the bent part of the upper pull rail coincide with the upper and lower parts of the sliding door, and the dropping means is placed at two locations, at the middle part of the guide rail and at the end of the vertical frame. , forming a drop-in groove into which the hanging wheel is dropped, and the depth of this drop-in groove is set to be greater than or equal to the distance between the lower end of the sliding door and the floor. An airtight door featuring