JPH07100997B2 - Airtight door - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention automatically lowers the gap between the lower part of the sliding door and the floor surface with a lower airtight material when closing a sliding door type door such as a sliding door and a single sliding door. Regarding airtight doors to be sealed.

(Prior Art) The present applicant has previously proposed an airtight door shown in Fig. 11 for use in a room requiring airtightness such as a clean room (Japanese Patent Laid-Open No. 60-184181). Sliding door in this airtight door 48
Is for traveling between the door pocket 50 and the door stop frame 51 via the one traveling on the hanger rail of the upper frame 49. When the sliding door 48 is closed, it is drawn to the clean room side by the drawing means, and both sides and the upper side of the sliding door are framed.
At the same time as closely adhering to the 49, 51 and the door bag 50, the lower airtight member 52, which is attached to the lower part of the sliding door so as to be vertically movable over the entire length, is moved downward, and the gap 54 between the sliding door 48 and the floor surface 53 is made of this airtight material. Seal tightly. The operation of the airtight material 52 is the handle when closed.
It is performed through an operating means that is interlocked with the handle by turning 55 in the direction of the arrow. In this way, by rotating the handle 55, the lower airtight member 52 is moved up and down to move the sliding door 48 and the floor surface.
In the conventional example in which the gap with 53 is sealed, the lower gap can be reliably sealed.

(Problems to be solved by the invention) By the way, if the airtight member can be automatically moved up and down by using the movement force associated with the opening / closing operation of the sliding door without operating this handle, The handle operation can be omitted, and the opening and closing operation of the sliding door becomes easier.

Therefore, an object of the present invention is to provide an airtight door in which a lower airtight member of a sliding door can be automatically moved up and down.

(Means for Solving the Problems) A feature of the present invention is that the sliding doors 1 and 1a of a hanging type are attached to a lower side portion of the sliding door so as to be vertically movable over the entire length, and a gap 19 between the sliding door and the floor surface 18 is provided. A lower airtight material 17 capable of sealing
In the place provided with the sliding door, an automatic operation means for moving the lower airtight member up and down, and a stopper 42 provided on the movement locus of the sliding door on the floor surface to restrict the operation of the automatic operation means. is there.

The automatic operation means includes the airtight material pressing bodies 20 and 20a provided in the sliding door at a predetermined interval, the lower airtight material holding bodies 29 and 29a, and the transmission bar 21 movably provided in the sliding door. And an operating body 37 provided on the transmission bar and capable of contacting the stopper, and a spring body for returning the transmission bar.
It consists of 34 and.

Further, the airtight material pressing body is connected to the upper pressing body 22, 22a and the connecting shaft.
26, 26a, lower pressers 23, 23a, and holding shafts 28, 28a, and one end of the upper presser body is fixedly provided with support shafts 24, 24a.
Is rotatably mounted on the transmission bar, and the other end is rotatably provided on the connecting shafts 26, 26a provided on the transmission bar, and one end of the lower presser body is rotatably connected to the connecting shaft. , The other end is connected to the holding shafts 28, 28a, and the upper pressing body and the lower pressing body move in the moving direction of the sliding door about the connecting shafts 26, 26a when the transmission bar moves. The holding shafts 28, 28a can move the lower airtight member 17 up and down via the holding bodies 29, 29a, and the transmission bar 21 causes the actuating body 37 to contact the stopper. The contact causes the spring body 34 to move against the spring force.

(Function) The sliding doors 1 and 1a are drawn to one side of the sliding door by the drawing means when closed, and when the sliding door is, for example, a sliding door, the upper end and the rear end of the one side (opposite the assembling part) The end portion on the side is in close contact with the frame body. For example, in the case of a sliding door, all the end portions except the lower end portion of one side surface are in close contact with the frame body. When the sliding doors 1 and 1a are closed, the actuating body 37 contacts the stopper 42,
Therefore, the transmission bar 21 horizontally moves against the spring force, and the connecting shafts 26, 26a follow the movement, so that the airtight material pressing bodies 20, 20a lower the airtight material holding bodies 29, 29a. Therefore, the lower airtight member 17 moves downward to seal the gap 19 between the sliding door and the floor surface 18.

When the sliding doors 1 and 1a are opened, the pulling is released and at the same time,
As the actuating body 37 is separated from the stopper 42 in accordance with the backward movement of the sliding door, the actuating body and the transmission bar 21 are returned to their original positions, and thus the airtight material pressing body 20, 20a lifts the holding bodies 29, 29a, The lower airtight material 17 will be separated from the floor surface 18.

In this way, the vertical movement of the lower airtight member 17 is automatically interlocked with the forward and backward movements performed when opening and closing the sliding doors 1 and 1a.

(Example) As an example of the present invention, an example in which the invention is applied to an automatic airtight door provided with a drawing sliding door will be described with reference to the drawings.

In Figures 5-7, sliding doors 1,1a run from door pockets 2,2a to the central part of the door, and are called in close contact with each other in the central part to cleanliness in the same clean room as shown in Figs. It is divided into a high room R and a low room Ra. Sliding door 1,1a, when closed,
The attracting means 44, 44a, 45, 45a, 46, 47, 47a, which will be described later, attracts to the room R side having high cleanliness. Sliding door 1,1a
It is a top suspension type having a suspension wheel 3 at its upper end portion, and this suspension vehicle travels on a hanger rail 5 provided in the longitudinal direction of the upper frame 4 (left-right direction in FIG. 5). The suspension vehicle 3 includes a bearing 6 (sliding door 1
The bearing 6 is attached to both ends of a slide shaft 7 which penetrates through the bearing 6), and the bearing is attached to the upper ends of the sliding doors 1 and 1a and has a built-in slide bearing. Slide shaft 7
Reverse Y-shaped connecting plates 8 and 8a are attached to both ends of
This connecting plate is a supporting part 9,9a which is standing up from this connecting plate.
Is connected to the endless belt 10 via. The connecting plate 8 of one sliding door 1 is connected to the lower belt portion of the endless belt 10, and the connecting plate 8a of the other sliding door 1a is connected to the upper belt portion, as shown in the fifth illustration. The endless belt 10 is wound around a transmission gear 12 and a pulley 13 of a motor 11 installed on the front and rear ends of the upper frame 4. The operation of the motor 11 is automatic control. Therefore, the operation of the motor 11 causes the transmission gear 12
5 rotates counterclockwise in FIG. 5, the belt 10 moves in the direction of the arrow, so that the sliding doors 1 and 1a move in the direction of the arrow, and the door is opened. If the transmission gear rotates clockwise, the sliding door
1,1a will be closed.

When the sliding doors 1 and 1a are closed, sealing means are provided on the upper frame 4, the door pockets 2 and 2a, and the sliding doors, respectively, in order to ensure sealing. That is, as shown in FIG. 7, a hollow belt-shaped airtight material 14 is fixed inside the upper frame 4 on the room R side where the cleanliness is high, and this airtight material can be closely attached to one upper side surface of the sliding doors 1, 1a. Is. As shown in FIG. 6, a hollow belt-shaped airtight material 15 is fixed in the longitudinal direction on the side of the door pocket (only the door pocket 2 is shown) and on the side of the room Ra where the cleanliness is low. Is airtight on the side surface of the rear end of the sliding door 1. Further sliding door 1,1a
Hollow airtight materials 16 and 16a made of chloroprene rubber are attached to the assembly portion of the front end portion of the both, and both airtight materials can be adhered to each other. Also, on the lower side of the sliding door 1,1a,
As shown in Fig.3,4,7, lower airtight material 17 is provided so that it can move up and down over the entire length.
The gap 19 between and is sealed.

Here, the structure of the automatic operation means for automatically moving the lower airtight member 17 in the one sliding door 1 up and down will be described with reference to FIGS. The automatic operating means on the sliding door 1a side is also substantially the same as the above-mentioned automatic operating means, and therefore its explanation is omitted.

As shown in FIG. 1, in the lower part on the front and rear ends of the sliding door 1, the airtight material pressing body 20 bent in a V shape is formed.
20a is provided, and a transmission bar 21 connecting these two pressers is provided so as to be movable horizontally. A mounting plate 25 is fixedly provided on the frame incorporated in the sliding door 1.

A specific configuration of the airtight material pressing body 20 on the left side of FIG. 1 will be described.
As shown in FIGS. 1 and 4, the presser body 20 includes an upper presser plate 22 and a lower presser plate 23, and both upper and lower presser plates form a toggle joint mechanism. The upper pressing plate 22 has its upper end portion rotatably mounted on a support shaft 24 provided on a mounting plate 25. The lower end of the upper presser plate 22 is rotatably connected to a connecting shaft 26 provided on the transmission bar 21, and the connecting shaft is connected to the upper end of the lower presser plate 23. , This connecting shaft is used as the swing center. The connecting shaft 26 is movable in a rectangular escape hole 27 formed in the mounting plate 25. Lower presser plate
A holding plate 29, which is a holding body, is attached to the lower end of the 23 through a holding shaft 28. The lower pressing plate 23 has a holding shaft 28 as a swing center, and the holding shaft is vertically movable within a vertically long guide hole 30 formed in a mounting plate 25.

Further, the structure and the mounting state of the pressing body 20a on the right side of FIG. 1 are substantially the same as those of the pressing body 20 on the left side,
The corresponding relationship is clarified by adding "a" to the code of the presser body 20.

The support plates 31, 32 (the fourth
Both ends of the figure) are supported by bolts 33, and both ends of the lower airtight member 17 are fixedly held by the lower portions of both support plates.

Both ends of the transmission bar 21 made of a channel material are attached to the connecting shafts 26, 26a as shown in FIGS. The transmission bar 21 and the mounting plate 25 have support pins 33 and
It is connected to the coil 3a by a coil spring 34 which is a return spring body having both ends hooked. A mounting auxiliary plate 35 is fixed to the right end portion of the transmission bar 21 in FIG. 1, and an operating plate 37, which is an operating body having a shaft 36 as a rotation center, is vertically provided on the mounting auxiliary plate 35. A contact plate 38 is fixed to the lower end of the operating plate 37. Shaft pins 39 and 39a are planted in the intermediate portion of the actuating plate 37 and the mounting auxiliary plate 35, and a coil spring 40 is hooked on both shaft pins. Therefore, the actuating plate 37 is always biased by the coil spring 40 in the clockwise direction in FIG. A stopper pin 41 is planted in the auxiliary mounting plate 35, and the operating plate 37 is always in contact with this pin to regulate the rotation angle.

Here, the airtight material pressing body 20, 20a, the transmission bar 21, and the lower airtight material
The interlocking relationship with 17 will be explained.

When the transmission bar 21 is horizontally moved to the right from the state shown in FIG. 1, the connecting shafts 26 and 26a are also horizontally moved to the right at the same time, as shown in FIG. Boards 22 and 2
3,22a and 23a are displaced from the bent state to the upright state, and with this transition, the holding shafts 28,28a descend in the guide holes 30,30a,
Therefore, the holding plate 29 also descends in conjunction, the lower airtight member 17 at the lower end of this holding plate moves downward, and eventually it comes into close contact with the floor surface 18 to form a gap.
Seal 19

As the transmission bar 21 moves horizontally to the left and right,
0a makes a bending and upright motion, and the lower airtight member 17 moves up and down following this motion.

As shown in FIGS. 1, 2, and 4, a stopper 42 is fixed on the floor surface 18 with a bolt 43, and a stopper piece 42a stands up at the end of this stopper. The stopper plate 42a is brought into contact with the contact plate 38 of the operating plate 37 when the sliding door 1 is closed.

The pulling means 44 to 47, 44a, 45a, 47a of the sliding doors 1, 1a will be described. The upper and lower parts of the sliding door 1 can be drawn together. Sliding door 1
The pulling means on the upper side will be described. As shown in FIGS. 7 and 8, rollers 44, 44a as pulling means are horizontally attached to the upper ends of the sliding doors 1, 1a. Rollers 44,44a
Can travel in a guide passage 45 provided in the upper frame 4. The guide passage 45 has a bent portion 45a that is bent toward the room R (upper side in FIG. 8) at a position corresponding to an intermediate portion of the passage, that is, a position where the sliding doors 1 and 1a meet. For this reason rollers 44,44a
As shown by the arrow in FIG. 8, the traveling direction changes when the sliding doors 1 and 1a are closed.

Explaining the pulling means 46 on the lower side of the sliding doors 1, 1a,
As shown in FIGS. 1, 3, and 9, a roller 46 as a drawing means is attached to the upper portion of the bolt 43 fixing the stopper plate 42. The rollers 46 can travel in guide passages 47, 47 provided in the lower portions of the sliding doors 1, 1a, respectively. The guide passages 47, 47 are
As shown in FIG. 9, a bent portion 47a is formed on the room Ra side (lower side in FIG. 9) on the rear end (right end) side. For this reason sliding doors
When 1, 1a is closed, the lower side is moved to the room R side.

Next, the operation of the present invention will be described.

First, the case where the sliding doors 1 and 1a are closed will be described.

When the sliding doors 1 and 1a are open, they are in the positions shown by the solid lines in FIG.
As shown in the first illustration, there is a gap 19 between the sliding door and the floor surface 18. By the operation of the motor 11, the transmission gear 12 rotates clockwise in FIG. 5, and the sliding doors 1 and 1a run toward the center of the door and eventually close. Just before closing, rollers 44, 44a and 46
Travels along the bent portions 45a and 47a of the guide passages 45 and 47, so that the sliding doors 1 and 1a are drawn to the room R side where the degree of cleaning is high. Therefore, the airtight material 14 fixed to the inner side of the upper frame 4 on the room R side having a high degree of cleaning shown in Fig. 7 is in close contact with and pressed against one upper side surface of the sliding doors 1, 1a. Further, the airtight material 15 fixed to the low-cleaning room Ra side of the door pocket 2 shown in FIG. 6 is pressed against the rear end side surface of the sliding door 1.

At the same time, the contact plate 38 of the operating plate 37 is the stopper piece of the stopper plate 42.
As it abuts 42a and the sliding doors 1 and 1a try to close further,
In relation to the sliding door, the transmission bar 21 horizontally moves in the direction opposite to the running direction of the sliding door (rightward in FIG. 1) against the spring force of the spring body 34 and the spring 40, and at the time of closing. , As shown in Fig. 10, both upper and lower presser members 22, 23 and 22a, 23a
So that the holding plate 29 descends and the lower airtight member 17
Moves downward and contacts the floor surface 18 to seal the gap 19. In this way, the lower airtight member 17 automatically moves down in association with the pulling operation of the sliding doors 1 and 1a, whereby the doors are sealed. Further, the airtight members 16 and 16a in the assembled portion of the sliding doors 1 and 1a are in close contact with each other.

Next, the case where the sliding doors 1, 1a are opened will be described.

When the sliding doors 1 and 1a are opened and closed by the operation of the motor 11, the operating plate
Since the contact plate 38 of 37 is separated from the stopper piece 42a, the spring force of the coil springs 34, 40 causes the transmission bar 21 and the operating plate 37 to move.
Return to their original position, and therefore the upper and lower presser plates 22,23 and 22a, 23a
1 again bends like a dogleg as shown in FIG. 1, the holding plates 29, 29a rise and the airtight member 17 moves upward and returns to the original position.
When opened, the upper and lower rollers 44, 44a, 46 escape the bent portions 45a, 47a of the guide passages 45, 47, so that the pulling of the sliding doors 1, 1a is released.

The airtight door does not limit the door that partitions the same room of the clean room, and can be widely used as, for example, a door that partitions the clean room from the corridor. Further, the operating plate 37 may be fixed to the transmission bar 21.

(Effect of the invention) According to the present invention, since the vertical movement of the lower airtight member is performed in conjunction with the running of the sliding door, it is possible to automatically seal the gap with the floor surface when the sliding door is closed without manually. This makes it possible to open and close the airtight door easily and easily, and if the door is an automatic door, for example, the robot can enter and exit a room where airtightness is required, such as a clean room.

[Brief description of drawings]

FIG. 1 is a front view of the operating means for the lower airtight member, FIG. 2 is a sectional view taken along line II-II of FIG. 1, FIG. 3 is a sectional view taken along line III-III of FIG. 1, and FIG. -IV line sectional view, Fig. 5 is a front view showing a closed state of the sliding door, Fig. 6 is an enlarged sectional view of Fig. 5 VI-VI line, Fig. 7 is a vertical sectional view of the sliding door, and Fig. 8 is an upper portion. FIG. 9 is an explanatory view showing the relationship between the guide passage and the sliding door, FIG. 9 is an explanatory view showing the relationship between the lower guide passage and the sliding door, FIG. 10 is a front view showing the closed state of the lower airtight material, and FIG. 11 is a conventional example. It is a partially cutaway front view of FIG. 1,1a …… Sliding door, 14,15 …… Airtight material, 17 …… Lower airtight material, 1
8 …… floor, 19 …… gap, 2,2a …… door pocket, 20,20a …… airtight material retainer, 21 …… transmission bar, 24,24a …… support shaft, 26,2
6a …… Connecting shaft, 28,28a …… Holding shaft, 29,29a …… Holder,
34 ... Spring body, 37 ... Actuator, 4 ... Upper frame, 42 ... Stopper, 44,44a ... Pulling means (roller), 46 ... Pulling means (roller), 45, 47 ... Pulling means (guide passage), 45a, 47a ... Pulling means (folding part).

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shinichiro Tomikawa 2-16-1 Kyobashi, Chuo-ku, Tokyo Shimizu Construction Co., Ltd. (72) Yuo Ogasawara 2-16-1 Kyobashi, Chuo-ku, Tokyo Shimizu Construction Co., Ltd. (56) References Actually opened 54-101052 (JP, U) Actually opened 59-69395 (JP, U) Actually opened 54-149111 (JP, U)

Claims (2)

[Claims] 1. A sliding door (1, 1a) of a hanging type and a lower door of the sliding door, which is vertically movable over the entire length, and is capable of sealing a gap (19) between the sliding door and a floor surface (18). A lower airtight material (17), an automatic operation means provided on the sliding door to move the lower airtight material up and down, and a stopper (a) provided on the movement locus of the sliding door on the floor surface to restrict the operation of the automatic operation means ( 42), the automatic operating means is provided in the sliding door at a predetermined interval with the airtight material pressing body (20, 20a), the lower airtight material holding body (29, 29a), and the sliding door. A movable transmission bar (21), an operating body (37) provided on the transmission bar and capable of contacting the stopper, and a spring body (34) for returning the transmission bar, The airtight material presser body includes an upper presser body (22, 22a) and a connecting shaft (2
6, 26a), the lower presser body (23, 23a) and the holding shaft (28, 28a), and one end of the upper presser body is fixedly provided on the support shaft (2
4, 24a) is rotatably attached, and the other end is rotatably provided on the connecting shaft (26, 26a) provided on the transmission bar, and one end of the lower presser body is connected to the connecting shaft. (26, 26a) is rotatably connected, the other end is connected to the holding shaft (28, 28a), the upper presser body and the lower presser body, depending on the movement of the transmission bar The connecting shaft (26, 26a) can be bent in the moving direction of the sliding door, and the holding shaft (28, 28a) can secure the lower airtight material (17) via the holding body (29, 29a). The transmission bar (21) can move up and down, and the transmission bar (21) moves against the spring force of the spring body (34) when the actuating body (37) contacts the stopper. Airtight door to do. 2. The pulling means (44,44a, 45,45a, 4) for pulling the sliding door to one side surface thereof according to claim 1.
6,47,47a) are provided, and the pulling means can be used to crimp the sliding doors to the airtight materials (14,15) attached to the upper frame (4) and the door pocket (2,2a), respectively. Characteristic airtight door.