JPH08200509A - Inflate sealing member - Google Patents

Abstract

PURPOSE: To dispense with the fixing of an inflate seal member to one member, to facilitate the fitting, to improve the fitting workability, and to improve the sealability. CONSTITUTION: An inflate sealing member is formed of cylindrical bodies 1 having an inflated part 4 and a base part 5 where the expendable reinforcing cloth 2 such as the textile is embedded between a tube rubber 3a and an outer layer rubber 3b consisting of the rubber-like elastic material, and the base parts 5, 5 of two cylindrical bodies 1 are integrated through a partitioning member 8. The fluid such as the air flows in or out of hollow parts 6a, 6b of the cylindrical bodies 1 from in-flow port and discharge port 7a, 7b allowing the inflated part 4 of the cylindrical bodies 1 to be inflated/contracted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of an inflatable seal member, and more specifically, it is integrally formed through a partition member with the base portions of two tubular bodies being back-to-back. The present invention relates to a flate seal member.

[0002]

2. Description of the Related Art Conventionally, it has been used for a sealing member arranged on the peripheral portion of a hatch cover for a ship, a sealing member arranged on the peripheral portion of an opening / closing door of a vehicle, and a portion for maintaining airtightness of a room or a container. As a seal member to be supplied, low-pressure air is supplied to a tubular body formed of a rubber-like elastic material in which a reinforcing cloth is embedded,
As a result, an inflatable seal member is used that instantly expands the volume of the tubular body and tightly seals it, and shuts off air, other gas bodies, liquid, dust, and the like.

By the way, as a conventional inflatable seal member, as shown in FIG. 5, a tubular body 1 having a bulging portion 4 formed of a rubber-like elastic material 3 in which a reinforcing cloth 2 is embedded and a base portion 5 is formed. Is formed into a hollow interior 6 of the tubular body 1.
A fluid A such as air is made to flow in or discharge from the inside of the fluid inlet / outlet 7 to expand or contract the bulging portion 4 of the tubular body 1.

[0004]

However, since the conventional inflatable seal member has a structure in which only the bulging portion 4 on one side expands as described above (expansion in only one direction),
At the time of use, it is necessary to bond and fix the base portion 5 to the cylinder or the core, so that there is a problem that a lot of labor and time are required for the attachment work of the inflatable seal member.

The present invention has been devised in view of the above-mentioned conventional problems, and has a structure in which the cylindrical bodies expand and contract in two directions at 180 degrees, that is, by expanding and contracting in two directions. Even when sealing the gap between two members, it is not necessary to fix the inflatable seal member to one member, it can be easily mounted, the mounting workability can be improved, and the reliability of the sealing property can be improved. It is an object of the present invention to provide an inflatable seal member capable of improving the property.

[0006]

In order to achieve the above object, the present invention allows a fluid to flow into the hollow interior of a cylindrical body having a bulging portion formed of a rubber-like elastic material having a reinforcing cloth embedded therein and a base portion. Alternatively, an inflatable seal member configured to expand and contract the expanded portion of the tubular body by discharging the base portion of the plurality of tubular bodies integrally via a partition member. The idea is to have formed it. Further, a reinforcing cloth or a reinforcing plate such as a woven fabric which does not expand or contract is used as the partition member.

[0007]

The present invention is constructed as described above, and is constructed such that one inflatable seal member bulges in mutually opposite directions, so that, for example, a gap between the tubular body and the core is formed. Also in the case of sealing, an inflatable seal member is interposed between the gaps to cause a fluid to flow into the hollow interior of the tubular body and to expand the bulging portion, thereby expanding the inner wall surface of the tubular body and the outer periphery of the core. Since the seal can be made in close contact with the surface, the inflatable seal member can be used without being fixedly adhered to one member, and the workability of attaching the inflatable seal member can be improved.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings. The same components as those in the conventional example are designated by the same reference numerals and the description thereof will be omitted. FIG. 1 is a sectional view showing a contracted state of an inflatable seal member embodying the present invention. The inflatable seal member includes a tube rubber 3a and an outer rubber layer 3 made of a rubber-like elastic material 3.
A stretchable reinforcing cloth 2 such as a woven fabric is embedded between the two and b to form a tubular body 1 having a bulging portion 4 and a base portion 5, and two tubular bodies 1 thus formed The base portions 5 and 5 are integrally formed via a partition member 8.

In the hollow interiors 6a and 6b of the cylindrical body 1,
A fluid such as air is introduced or discharged from the fluid inlet / outlet 7a, 7b to expand or contract the bulging portion 4 of the tubular body 1. As the partition member 8 provided between the base portions 5 and 5, a reinforcing cloth or a reinforcing plate such as a woven fabric that does not expand or contract is used, and the hollow interior 6a of the tubular body 1
The shape of the tubular body 1 is not collapsed when the fluid is caused to flow into the 6b to be inflated, and only the bulging portion 4 can be bulged.

Further, by using a stretchable knit or a stretchable woven fabric as the reinforcing cloth 2 embedded in the rubber-like elastic material, the degree of freedom of deformation of the reinforcing cloth 2 is increased, and the reinforcing cloth 2 and the tube are expanded. Rubber 3a and outer layer rubber 3b
The shear stress at the interface with and becomes small, and the fracture at the interface can be effectively suppressed. Further, as a method of applying the internal pressure to the inflatable seal member, gas,
The use of a fluid such as a liquid is considered, and air pressure is generally used because of the ease of use of the inflatable seal member, and the working pressure is 1.5 to 2.0 Kgf / cm ² .

The inflatable seal member in the embodiment of the present invention is constructed as described above, and its usage is, for example, as shown in FIGS. 2 to 4, a gap between the tubular body 10 and the core 11. When the portion 12 is sealed, at least one or more inflatable seal members formed in an annular shape are interposed in the gap portion 12, and the hollow interior 6 of the tubular body 1 is inserted.
When a fluid such as air is made to flow into the a and 6b through the inflow / outflow ports 7a and 7b, the bulging portion 4 located on the tubular body 10 side and the bulging portion 4 located on the core 11 side respectively. When expanded, the inner wall surface 10a of the tubular body 10 is expanded as shown by the chain double-dashed line.
And the outer peripheral surface of the core 11 and the tubular body 10 and the core 11.
The gaps 12x and 12y can be partitioned and sealed.

The inflatable seal member may be formed in a band shape in addition to the annular shape as described above, and may be used in a door, which requires soundproofness and airtightness.
It can be used as a wall, and it is also possible to seal between an electric wire and a wall or the like in order to have a sealing property in a hatch of a ship or the like. Furthermore, if an inflatable seal member formed in an annular shape is used, it can be used for centering the shaft.

[0013]

As described above, the present invention allows a fluid to flow into or out of the hollow inside of a tubular body having a bulging portion formed of a rubber-like elastic material in which a reinforcing cloth is embedded and a base portion. An inflatable seal member configured to expand and contract a bulging portion of a tubular body, wherein the base portions of the plurality of tubular bodies are integrally formed via a partition member, and thus, for example, tubular Even when the gap between the body and the core is sealed, the inflation seal member is interposed between the gaps to allow the fluid to flow into the hollow interior of the tubular body and to expand the bulging portion. The inner wall surface of the tubular body and the outer peripheral surface of the core can be intimately sealed to each other. Therefore, the inflatable seal member can be used without being adhesively fixed to one member, and the workability of attaching the inflatable seal member can be improved. Can be good There is an effect.

A door which requires soundproofness and airtightness,
Not only can it be used for walls, but it can also be used to seal between electrical wires and walls, etc., in order to give it a tight seal with the hatch of a ship, etc. Furthermore, an inflatable seal member formed in an annular shape is used. Then, it can be used for centering the shaft.

[Brief description of drawings]

FIG. 1 is a sectional view showing a contracted state of an inflatable seal member embodying the present invention.

FIG. 2 is a cross-sectional view showing a use state of the inflatable seal member according to the present invention.

FIG. 3 is a perspective view showing a state where an inflatable seal member is interposed between a tubular body and a core.

FIG. 4 is a perspective view showing an inflated state of an inflatable seal member interposed between a tubular body and a core.

FIG. 5 is a sectional view of a conventional inflatable seal member.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Cylindrical body 2 Reinforcement cloth 3 Rubber-like elastic material 3a Tube rubber 3b Outer layer rubber 4 Bulging part 5 Base part 6a, 6b Hollow inside 7a, 7b Inflow / exhaust port 8 Partition material 10 Tubular body 11 Core 12 Gap part 12x , 12y gap

Claims (2)

[Claims] 1. A fluid is caused to flow into or out of the hollow inside of a tubular body having a bulging portion formed of a rubber-like elastic material having a reinforcing cloth embedded therein and a base portion, and the bulging portion of the tubular body is inflated. In an inflatable seal member configured to be contracted, the base portions of the plurality of tubular bodies are integrally formed via a partition member. 2. The inflatable seal member according to claim 1, wherein a reinforcing cloth or a reinforcing plate such as a woven fabric that does not expand or contract is used as the partition member.