JP2538433Y2 - Reinforcement structure for the base of rubber bag - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing structure of a base for attaching a base of a rubber bag, and more particularly to an improvement of a base for mounting a rubber bag used for an oil fence, a silt fence or the like.

[0002]

2. Description of the Related Art Conventionally, a cylindrical injection / ejection base is attached to an end of a rubber bag as an oil fence, a silt fence, or the like, and the bases are sequentially connected to form a continuous body of a series of connected rubber bags. There is known a rubber bag body capable of injecting or exhausting a liquid or gas from the base (for example, Japanese Utility Model Application No. Hei 2-7888). Incidentally, since the rubber bag is often used while floating on the sea surface or the like, bending force tends to be applied particularly to the vicinity of the mouthpiece portion due to the waves. Accordingly, there is a tendency that the stress is easily broken at the boundary between the rubber sheet portion and the base portion due to stress concentration. In order to solve such a problem, a rubber bag body near the base mounting portion
In many cases, a thick rubber sheet is stuck on the outer surface of the rubber sheet to form a reinforcing structure.

[0003]

However, the above-mentioned reinforcement structure is not shown in FIG.
As shown in FIG.
Since the rubber sheet C is stacked and vulcanized and integrated, the thickness of the rubber sheet C differs greatly from that of the other parts. Therefore, in the manufacturing stage, as shown in FIG. It is necessary to interpose the spacer E in the rubber sheet portion D, which has a drawback that the manufacturing is troublesome. In use, the rubber sheet portion whose thickness changes stepwise as shown in FIG. There is a drawback that stress concentration occurs in the portion (F) and a crack may be formed from this portion.

[0004]

SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks, this invention can reinforce a base portion and eliminate a sudden change in thickness from a peripheral rubber sheet portion to prevent stress concentration. The purpose of the present invention is to provide a reinforcing structure for a base mounting portion.

[0005]

That is, the reinforcing structure of the mouthpiece mounting portion of the rubber bag according to the present invention is a funnel-shaped rubber having a through hole 2C for accommodating the mouthpiece 1 made of a metal cylinder. The metal cylinder 1 is placed in a reinforcing body 2 made of a canvas.
It consists of a rubberized canvas that is stored and funnel-shaped
Front and back rubber sheets constituting a rubber bag body 3 on the outer surface of the reinforcing body 2
3A and 3B are stacked, and the base 1, the reinforcing body 2, and the rubber bag
3 and is characterized in that become bonded together.

[0006]

Next, an embodiment of the present invention will be described. FIG. 1 is an exploded perspective view of an embodiment of the present invention, and FIG. 2 is a sectional view of the embodiment.

The reinforcing structure of the mouthpiece mounting portion of the rubber bag according to the embodiment has a connecting flange or connecting joint 1A at one end.
The metal cylinder 1 is placed in a reinforcing body 2 made of a funnel-shaped rubber canvas having a through hole 2C for accommodating a base 1 made of a metal cylinder having a coupling joint (in the illustrated example, a coupling joint).
It consists of a rubberized canvas that is stored and funnel-shaped
Front and back rubber sheets constituting a rubber bag body 3 on the outer surface of the reinforcing body 2
3A and 3B are stacked, and the base 1, the reinforcing body 2, and the rubber bag
3 and is constructed by integrally bonded to the.

[0008] reinforcing member 2 made of rubber Technology of sail cloth formed in a funnel shape in the above embodiment, normally, rubberized canvas
Is cut into a fan shape and rolled to meet the end corresponding to the bus
As shown in FIG. 3, a rubberized sailcloth in which a through- hole 2C through which the base 1 is inserted and housed in one opening end of a cylindrical body 2B formed of a rubberized sailcloth 2A is previously formed, as shown in FIG. The patch cloth 2D formed in step 2 may be formed by welding or the like. The front and back rubber sheets 3A and 3B , the reinforcing member 2 and the base 1 are used to form the reinforcing member 2 into a fan shape as shown in FIG.
The base 1 is stored inside and the front and back rubber sheets 3
A, after combining together by stacking 3B, are bonded and integrated by such squeezing vulcanization.

[0009]

According to the reinforcing structure of the mouthpiece mounting portion of the rubber bag of the present invention, the vicinity of the mouthpiece is reinforced by the reinforcing body 2 made of a rubberized canvas, and since the thickness is thin, stress concentration occurs. No step is formed , and cracks do not occur even when rubbed by waves. Also, since the thickness is small, a spacer or the like is not required for pressing during press vulcanization.

[0010]

[Effect of the invention] As this invention has been described above, since the reinforcing of the base around the rubber bag body portion is reinforced by a reinforcing member made of a rubber Technology of sail cloth formed into a funnel shape, around spinneret resistant It has various practical effects, such as excellent bending strength and bending durability, and can be vulcanized and vulcanized without using a spacer or the like at the time of molding, which facilitates production.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention.

FIG. 2 is a sectional view of the embodiment.

FIG. 3 is a perspective view of a main part of another embodiment.

FIG. 4 is a sectional view of a conventional example.

FIG. 5 is a sectional view showing a manufacturing process of a conventional example.

[Explanation of symbols]

1 Base 1A made of a metal cylinder 1A Joint 2 Reinforcement 2C made of rubberized canvas 2C Through hole 3 Rubber bag 3A, 3B Rubber sheet constituting rubber bag

Claims (1)

(57) [Scope of request for utility model registration] 1. A housing for accommodating a base 1 made of a metal cylinder.
It is made of a rubberized canvas having a through hole 2C and formed in a funnel shape.
The metal cylinder 1 is housed in a reinforcing body 2
On the outer surface of the reinforcement 2 made of rubberized canvas
Front and back rubber sheets 3A and 3B constituting the
I, the reinforcing structure of the mouthpiece attachment portion of the rubber bag, characterized by comprising adhered integrally with said mouthpiece 1 and the reinforcement member 2 and the rubber bag 3.