JPH08189263A - Doorway sealing device - Google Patents

Abstract

PURPOSE: To provide a doorway sealing device which is structured simply and excels in the durability. CONSTITUTION: A doorway sealing device according to the present invention is to be installed at the doorway of a house to seal the gap with respect to a truck, container, railway car, etc., located at the doorway and is composed of cylindrical pieces 11 installed at the doorway at least along its two sides, a resilient piece 12 made from a resin plate, metal plate, etc., and installed inside the cylindrical pieces 11 to energize them 11 so that they are flattened, and a means connected with the cylindrical pieces 11 to supply or exhaust compressed air. The resilient piece 12 is curved by supplying the compressed air into the cylindrical pieces 11 by a supplying/exhausting means, and thereby the cylindrical pieces 11 are expanded and put in pressure contact with a truck, container, railway car, etc., located at the doorway. The compressed air in the cylindrical pieces 11 are exhausted by the energizing force of the resilient piece 12 and the supplying/exhausting means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing device for sealing between a doorway of a building and a vehicle or the like located at the doorway to prevent outside air from entering the building and the vehicle, and particularly to a cylinder. The present invention relates to a doorway sealing device using a body.

[0002]

2. Description of the Related Art For example, when a cold storage object is carried in or out of a cold storage truck of a truck type, a shutter provided at a doorway of the cold storage warehouse is opened, a truck is backed, and the cold storage vehicle is directly attached to the door. The cold storage items are put in and taken out by arranging the cargo bed part of the so as to prevent outside air from entering as much as possible. However, when the truck is moved back, there is little discrepancy in the height direction between the platform and the platform, and the platform can be applied to the cushioning material, but there is a slight gap between the platform and the side surface of the doorway. Further, there is also a deviation in the height direction due to the influence of the tire air pressure. In this way, even if a skilled driver drives, an unavoidable gap is created between the doorway and the luggage carrier, and outside air enters through this gap. Therefore, a sealing device for sealing between a doorway of a building and a vehicle or the like located at the doorway to prevent outside air from entering the building and the vehicle is installed on the doorway side. In addition, such a sealing device is applied not only between the cold storage vehicle and the cold storage warehouse, but also when the cargo requiring cleanliness is directly put in and taken out of the building. In this case, dust, insects, etc. Is used to prevent entry into the building.

As a sealing device used for such a purpose, for example, the one shown in Japanese Utility Model Laid-Open No. 2-34982 is known. This is one in which air is supplied to a stretchable airbag formed of a flexible sheet member by a blower to expand the airbag and seal between a doorway of a building and a vehicle. . By the way, when the vehicle moves forward and backward with respect to the door, it is preferable to fold the airbag thinly and provide a sufficient space for the vehicle forward and backward. Therefore, a biasing means for contracting the airbag is provided. A weight is used as the urging means, and the airbag is contracted by the weight of the weight and folded along a fold line provided in advance.

[0004]

However, the above-mentioned urging means for contracting the airbag utilizes a pulley, a rope extending around the pulley, and a weight connected to the other end of the rope. . The structure is complicated, and there are problems such as the rope coming off the pulley. In addition, the airbag is sewn in a complicated shape, and since the rope guides and the like are stored in the airbag, there is some thickness even in the folded state, and the degree of shrinkage is insufficient. . The present invention has been made in view of such problems of the prior art, and an object thereof is to provide a doorway sealing device having a simple structure and excellent durability. There is.

[0005]

[MEANS FOR SOLVING THE PROBLEMS] A doorway sealing device for solving the above-mentioned problems is a doorway sealing device which is provided at a doorway of a building and seals between a truck, a container, a railway vehicle, etc. located at the doorway. And a tubular body attached along at least both sides of the doorway, and an elastic member such as a resin plate or a metal plate which is provided inside the tubular body and biases the tubular body to be flat. A body and means for supplying or discharging compressed air connected to the tubular body, wherein the elastic body is bent by supplying compressed air into the tubular body by the supply / discharge means. Expands the tubular body,
The tubular body is pressed against a truck, a container, a railway vehicle, etc. located at the doorway, and the compressed air in the tubular body is discharged by the urging force of the elastic body and the supply / discharge means. Is.

It is preferable that the tubular body is a continuous tubular body that is bent at a predetermined position and is attached to at least both sides and an upper portion of the doorway. Further, the supply / discharge means has terminal closing means for at least one end of the tubular body, and the terminal closing means supplies a seal hose, a seal fitting, and compressed air connected to the seal hose. Or a means for discharging, by supplying compressed air into the seal hose and expanding the seal hose, the end portion of the tubular body is sandwiched between the seal hose and the seal fitting. Those that seal are preferred. Further, the tubular body is preferably a tubular woven fabric in which a warp yarn and a weft yarn are woven in a tubular shape, and the inner surface of the tubular woven fabric is coated with rubber or synthetic resin.

[0007]

When compressed air is supplied into the tubular body, the tubular body expands, and as the tubular body expands, the elastic body such as a resin plate or a metal plate placed in the tubular body It bends and tries to expand into a generally circular shape, blocking and sealing between the doorway and the vehicle. When the air in the tubular body is discharged, the curved elastic body tries to restore the tubular body to its original shape by its biasing force, and the air in the tubular body is discharged. The shape returns to its original flat shape. The simple structure of the tubular body and the elastic body such as a resin plate or metal plate inside it makes it easy to flatten, and if you want to gain height when inflated, stack the tubular bodies in the height direction. Just do it.

When the continuous tubular body is bent and arranged, the air piping for the tubular bodies on both sides and the upper portion is unnecessary, so that the air piping is simplified. The elastic body inside the tubular body may be inserted separately from both sides and the upper part. Further, in a terminal sealing device having a seal hose and a seal fitting, a tubular body is located between the seal hose and the seal fitting, and compressed air is supplied into the seal hose to expand the seal hose. The end of the tubular body is sealed by sandwiching the tubular body between the expanded seal hose and the seal fitting. When the compressed air in the seal hose is discharged, the seal hose does not press the end of the tubular body and the end of the tubular body is released, and the air in the tubular body is rapidly discharged. . Furthermore, since the inner surface of the tubular woven fabric in which the warp yarn and the weft yarn are woven in a tubular shape is coated with rubber or synthetic resin, there is no sewing part or welded part, so the impact from the track hits,
No damage.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of the doorway seal device of the present invention when air is exhausted, and FIG. 2 is a front view of the doorway seal device of the present invention when air is supplied.

Referring to FIGS. 1 and 2, the doorway seal device includes a tubular body 11 mounted on both sides of the doorway 1 along three sides of an upper surface thereof by being bent in an inverted concave shape, and inside the tubular body 11. It is composed of an elastic body 12 which is divided into three parts and a compressed air supply / discharge means 13.

Reference numeral 14 is a belt for attaching the tubular body 11 to the doorway 1, and is formed of a rubber belt so as to absorb the difference in outer circumference between the tubular body 11 when flat and the tubular body 11 when inflated. Has been done. More specifically, the tubular body 11 was attached by hanging the belt 14 on an attachment fitting attached to the support wall of the doorway 1. Mounting brackets are attached to the upper and left corners of the upper part of the door opening and the lower parts of both sides. Note that ropes, strings, and the like can be used in addition to the belt 14, but in consideration of expansion of the tubular body 11 when compressed air is introduced into the tubular body 11, the use of an elastic belt, a rubber cord, or a spring is recommended. preferable. In addition, the tubular body 11 is provided on the left and right corners of the upper portion of the opening of the doorway 1 and on the lower portions of both sides, and the tubular body 11 on the upper side and the both sides is provided at a few places with an elastic belt, a rubber cord or a spring. It is preferably fixed.

The lower side of the doorway 1 is a platform 2, and a cushioning material 3 against which the lower end surface of the truck carrier abuts is attached to the upper portion of the platform 2. The cushioning material 3 has some elasticity and also functions as a sealing material. The lower end portions on both sides of the tubular body 11 extend further downward along the cushioning material 3. That is, as clearly shown in FIG. 2, the four sides of the truck bed can be sealed by the tubular body 11 along both sides of the doorway 1 and the three sides of the upper surface and the cushioning material 3. Alternatively, the tubular body 11 may be attached to the platform 2 below the cushioning material 3, and one tubular body 11 may be bent into a square shape so that the four sides can be sealed.

The compressed air supply / discharge means 13 is a cylindrical body 1.
1. One end sealing device 21 and one end sealing device 21
And a pipe 23 for the tubular body 11,
An operation box 24 for supplying or exhausting compressed air to the pipes 22 and 23 (communication with the atmosphere) and an air source 25 such as a factory air source, a compressor, and a blower. In addition,
This air inlet / outlet through the pipe 23 is used for the terminal sealing device 21.
It is preferable to form it in the vicinity of.

Compressed air is fed into the tubular body 11 through the pipe 23 to expand the tubular body 11, and compressed air supplied to the terminal sealing device 21 through the pipe 22 is used to end the tubular body 11. Press and seal. Then, as shown in FIG. 2, the tubular body 11 causes the elastic body 12 therein to be curved and deformed to expand.
When the operation box 24 is operated to bring the pipes 22 and 23 into communication with the atmosphere, the terminal sealing device 21 opens the end portion of the tubular body 11 and a large amount of air from the end portion of the tubular body 11 at a time is short. Exhausted. Then, the tubular body 11 has the elastic body 12 inside.
The cylindrical body 1 is deformed from the curved state to the original state by the urging force of
1 is made flat as shown in FIG. 1 to secure a large opening for the doorway 1.

The other end portion of the tubular body 11 on the opposite side of the terminal sealing device 21 is formed by folding the flexible tubular body 11 and closing it by an appropriate means such as an adhesive or a clamp.

Next, detailed structures of the cylindrical body 11 and the elastic body 12 will be described with reference to FIG. The tubular body 11 has airtightness, and is a woven fabric in which warp yarns and weft yarns are woven in a tubular shape, and an inner surface of the woven fabric is lined with soft rubber or synthetic resin. Is preferably coated with latex, vinyl chloride paste, or resin. This coating increases the coefficient of friction of the surface of the tubular body, prevents slippage between the tubular body and the cargo, and further protects the tubular body 11 from external damage and improves durability. Further, as the tubular body 11, two flexible sheets are superposed, and both side portions thereof are bonded by an adhesive means such as an adhesive or heat fusion to form a tubular body, or a flexible body. It is also possible to fold a sheet having the above and bond the side portions of the upper and lower sheets to each other by the above-mentioned bonding means to form a tubular shape. The flexible sheet is preferably a woven fabric obtained by weaving warp yarns and weft yarns, both surfaces of which are coated with a flexible synthetic resin.

An elastic body 12 is placed in the cylindrical body 11. The elastic body 12 is a long plate having a width slightly narrower than the folding width inside the tubular body 11. This elastic body 1
The short sides of both ends of 2 are cut into a semicircle, and the corners of the upper and lower long sides are rounded so as not to damage the rubber or synthetic resin lining on the inner surface of the tubular body 11. This elastic body 1
As a specific material for No. 2, a metal plate such as SUS spring steel material or a resin plate having flexibility such as polycarbonate is suitable. Further, as the elastic body 12, a wire may be bent in a zigzag shape to form a flat surface having a width slightly narrower than the folding width inside the tubular body 11. Similar to the elastic body 12, both ends are bent into a semicircle, and the upper and lower bent portions are bent with a radius so that the lining is not damaged. Also,
The elastic body 12 and the bent body of the wire are preferably continuous ones corresponding to the length of the tubular body, but a plurality of elastic bodies 12 are connected and inserted, or different kinds of elastic bodies such as a metal plate and a resin plate. You may put in 12 combinations.

Further, as shown in FIG. 3 (a), it is preferable that the elastic body 12 is slightly bent as shown by a chain double-dashed line so as to have a habit to regulate the bending direction. Then, the elastic body 12 bends convexly to the right in the longitudinal direction in the thickness direction of the paper surface, and convexly curves to the left at the back to prevent the phenomenon that the center is twisted. The elastic body 12 can be curved on the vehicle side to ensure the sealing performance with respect to the vehicle.

Further, as shown in FIG. 1, when the tubular body 11 is bent to be along the doorway 1, the elastic bodies 12 are the first elastic body 12a for the left side, the second elastic body 12b for the upper side, and the right side. It is divided like the third elastic body 12b for the side, and these elastic bodies 12a, 12b, 12c are connected by a wire 15, and the wire 1
It is preferable to cover the hose 5 with a slightly hard hose 16. Then, there is no hindrance to the bending at the bending point indicated by Δ, and the hose 16 is used by the hose 16 when the internal air is discharged.
The air flows without the 1 sticking together. When air begins to flow to the bent portion, air can be quickly discharged.

The thickness and material of the elastic body 12 and the material and thickness of the wire to be used are appropriately selected according to the size, material, thickness and air pressure of the tubular body 11. For example, if the elastic body 12 is thick, even if compressed air is sent into the tubular body 11, the elastic force of the elastic body 12 is too large and the tubular body 11 does not expand. On the other hand, when the elastic body 12 is thin, the elastic force is insufficient and the tubular body 11 expanded by the compressed air fed cannot be returned to the original flat shape, and the air inside the tubular body 11 cannot be restored. Can no longer be discharged. The diameter of the product is 300m
A 0.6 mm thick SUS spring steel material was used in the cylindrical body 11 of m.

Next, the structure and operation of the terminal sealing device 13 will be described with reference to FIG. In FIG. 5, (a) shows a state when air is discharged, and (b) shows a state when air is supplied.
The first seal fitting 31 and the second seal fitting 32 are arranged at a predetermined distance H, and one end of the tubular body 11 is passed between the first and second seal fittings 31 and 32, and a part 33 of one end is provided. Are fixed to the second seal fitting 32 with bolts 34. Also,
A seal hose 35 that expands or flattens due to air supply and discharge is disposed between the tubular body 11 and the first seal fitting 31, and attached to the first seal fitting 31 by an appropriate means. The shape of the first and second seal fittings 31 and 32 viewed from the upper side is rectangular and bolted through a spacer (not shown). In particular, the second seal fitting 32 is provided with a rectangular recess 36. The opening width L of the removed portion 36
Is larger than the folded width of the tubular body 11 when it is flat.
Further, the size of the seal hose 35 shown by the dotted line is gradually larger than the removal portion 36. As shown in FIG. 5, the corner of the removed portion 36 is cut at an angle of 45 degrees, and the tubular body 11 is pressed against this corner portion by the seal hose 35 while being flatly overlapped.

When compressed air is supplied into the seal hose 35 and the seal hose 35 expands, the tubular body 11 is sandwiched and sealed by the seal hose 35 and the seal fitting 32. The tubular body 11 is pressed against the sealing metal fitting 32, and the central portion of the sealing metal fitting 32 has a rectangular hollow portion.
1 becomes convex. Since the seal fitting 32 and the tubular body 11 are in pressure contact with each other, the force received by the tubular body 11 in the removal portion 32 is
Since the cylindrical body 11 acts as a force for pressing the tubular body 11 against the corner of the removed portion 36 of the seal fitting 32, the sealing performance is improved.

The tubular member 11 can be sealed by using the seal fitting 32 made of one plate instead of the seal fitting 32 made of the two rectangular rods 36 or the two divided rods. However, since the expanded seal hose 35 only press-contacts the entire tubular body 11, the sealing performance is poor. The end of the tubular body 11 on the side of the terminal sealing device 12 may be fixed to the terminal sealing device 12 separately with a separate metal fitting. In addition, the terminal sealing device 12 includes the tubular body 11.
It may be attached not only to one end but to both ends thereof.

Next, the operation of the above-described doorway sealing device will be described with reference to FIGS. 6 and 7. First, as shown in FIG. 6, the overdoor (shutter) 4 provided inside the doorway 1 is closed, and the tubular body 11 is flatly contracted as shown in FIG. The door is opened back to the inside of the doorway 1 having a depth, and the lower portion of the truck carrier 5 is applied to the cushioning material 3 of the platform 3 and stopped. At this time, the Tokrac loading platform 5 is moved back so as to be located in the center of the doorway 1 as much as possible.

Then, the operation box 24 of FIG. 1 is operated to supply compressed air to the pipes 22 and 23. A large amount of compressed air is supplied from an air inlet / outlet, which is a connecting portion of the pipe 22 to the tubular body 11, and the tubular body 11 expands while bending and deforming an internal elastic body. Then, as shown in FIG. 6, the belt 14
In the process in which the cylindrical body 11 expands while extending, the surface of the truck carrier 5 is abutted and sealed, and the state shown in FIG. 7 is obtained.
The pressure of the compressed air is a low pressure of about 0.1 to 0.2 kg / cm ² so as not to deform the truck carrier 5. However, the tubular body 11 itself has a pressure resistance of more than 10 k.
Since it is as strong as about g / cm ^2, even if the truck carrier 5 hits the tubular body 11, it is less likely to be damaged.

Then, as shown in FIG. 7, both sides and the upper part of the truck carrier are sealed by the tubular body 11, and the communication with the outside air is cut off. When the overdoor 4 is opened and the cargo is loaded and unloaded from the truck bed 5 in this state, dust, insects, and the like enter with the outside air, and cold air does not easily escape to the outside. Then, when the loading and unloading of the cargo is completed, the overdoor 4 in FIG. 6 is closed and the operation box 24 in FIG. 1 is operated to connect the pipes 22 and 23 to the atmosphere. Then, the terminal sealing device 21 of FIG. 7 is brought into the state of FIG. 5A, the air in the tubular body 11 is expelled at a stroke, and the state of FIG. 1 is promptly returned. After that, the truck is started and returns to the original standby state. As described above, since the strong and simple tubular body 11 is used and the elastic body 12 secures the rapid contraction, it operates effectively as a doorway sealing device having excellent durability and handleability.

[0027]

In the doorway sealing device having the above-described structure, the air in the tubular body can be easily discharged by inserting the elastic body into the tubular body, and the tubular body can be flattened to its original shape. Since it can be returned to the door, the protrusion from the door is reduced, and the vehicle can be easily moved in and out of the door. Since it has a simple structure of a tubular body and an elastic body, it is durable and durable even after repeated use.

By bending and using a continuous tubular body, the air piping at the bent portion can be simplified, and even when sealing both sides and the upper surface of the doorway, the air piping does not increase. , The structure can be simplified. In addition, the terminal of the tubular body can be released by discharging a small amount of compressed air in the seal hose of the terminal sealing device, and the end of the tubular body is opened wide, so that the air in the tubular body is rapidly released. Therefore, the time required to bring the tubular body into a flat state can be shortened, and the waiting time when the vehicle advances and retracts with respect to the door can be shortened. Furthermore, by using a uniformly woven tubular body, a hose with pressure resistance can be diverted, and since it is more durable than an airbag made of a sheet or the like, it can be damaged even if a truck hits it. There is nothing to do.

[Brief description of drawings]

FIG. 1 is a front view showing a mounting state of a doorway seal device of the present invention when air is discharged.

FIG. 2 is a front view showing a mounting state of the doorway sealing device of the present invention when air is supplied.

FIG. 3 is a cross-sectional view of the tubular body during air discharge and air supply.

FIG. 4 is a view showing an elastic body in a bendable tubular body.

FIG. 5 is a vertical cross-sectional view of the terminal sealing means provided at the end of the tubular body, showing the states during air supply and air discharge.

FIG. 6 is a side view showing a sealed state of a truck and a doorway.

FIG. 7 is a front view showing a sealed state of a truck and a doorway.

[Explanation of symbols]

 1 Doorway 5 Truck carrier (vehicle) 11 Cylindrical body 12 Elastic body 13 Compressed air supply / discharge means 21 Terminal sealing device 24 Operation box 31 1st sealing metal fitting 32 2nd sealing metal fitting 35 Seal hose 36 Pull-out part

Claims (4)

[Claims] 1. A doorway sealing device which is provided at a doorway of a building and seals between a truck, a container, a railway vehicle, etc. located at the doorway, the tube being attached along at least both sides of the doorway. A cylindrical body, and an elastic body such as a resin plate or a metal plate that is provided inside the cylindrical body and biases the cylindrical body to be flat,
Means for supplying or discharging compressed air connected to the cylindrical body, wherein the elastic body is curved by supplying compressed air into the cylindrical body by the supply and discharge means. The tubular body is inflated, and the tubular body is pressed against a truck, a container, a railway vehicle, etc. located at the doorway, and compressed air in the tubular body is compressed by the urging force of the elastic body and the supply / discharge means. Door seal device designed to be discharged. 2. The doorway sealing device according to claim 1, wherein the tubular body is a continuous tubular body that is bent at a predetermined position and is attached to at least both sides and an upper portion of the doorway. 3. The supply / discharge means has a terminal closing means for at least one end of the tubular body, and the terminal sealing device comprises a seal hose, a seal fitting, and a compression connected to the seal hose. Means for supplying or discharging air, and by supplying compressed air into the seal hose to expand the seal hose, the end portion of the tubular body is sandwiched between the seal hose and the seal fitting. The doorway sealing device according to claim 1 or 2, which seals by performing. 4. The doorway according to claim 1, 2 or 3, wherein the tubular body is a tubular woven fabric formed by weaving a warp yarn and a weft yarn into a tubular shape and coating the inner surface with rubber or a synthetic resin. Sealing device.