JPS6319277Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a fender that is attached to a ship or a quay to prevent damage to the ship when the ship approaches the quay.

Conventionally, as shown in Figure 1, the above-mentioned fender materials include:
There is one in which the outer peripheral surface of an inner core 1 made of a single cell elastic material is covered with an outer cover 2 made of a solid elastic material reinforced with a non-stretchable material such as synthetic fiber. In such fenders, the inner core 1 may change due to external temperature changes.
Both the inner core 1 and the outer sheath 2 expand and contract, but the inner core 1 made of a single cell elastic material is made of a non-stretchable material due to the influence of the gas inside the inner core 1 whose volume changes greatly depending on the temperature. It expands and contracts more than the outer covering 2. Therefore, when used in a place where the temperature is higher than that at the time of manufacture, the inner core 1 expands more than the outer sheath 2, and strong tension acts on the outer sheath 2, causing fatigue or damage to the outer sheath 2. It was dangerous. On the other hand, if the inner core 1 is used in a place with a lower temperature than when it was manufactured, the inner core 1 will shrink more than the outer sheath 2, which will cause the outer sheath 2 to loosen and wrinkle, which will not only spoil the appearance but also prevent wrinkles. The mountainous parts were easily damaged.

The purpose of this invention is to provide a fender that solves each of the above problems.

This invention will be explained in detail below based on an embodiment shown in FIG. In the figure, reference numeral 10 denotes an inner core, which is roughly shaped like a cigar.
Similarly, it is made of single cell elastic material.

Reference numeral 12 denotes an outer sheath, which has a cigar-shaped middle chamber so as to surround the inner core 10 with a certain gap, and like the conventional outer sheath 2, this is also made of a non-stretchable material, such as synthetic fiber. Made of reinforced elastic material.

Reference numeral 14 denotes an intermediate layer, which includes the inner circumferential surface of the outer cover 12 and the inner core 10.
It is arranged in a gap between the outer circumferential surface of the cell and the outer peripheral surface of the cell so that it is in surface contact with both of them, and is made of an open-celled or semi-open-celled elastic material. Note that the outer cover 10, inner core 12, and intermediate layer 14 are bonded to each other with an adhesive.

Reference numeral 16 denotes a supply/discharge port, which is bored in the center of one end of the outer cover 12 so as to penetrate from the inside to the outside.

With the fender constructed in this way, all the problems of the conventional fender shown in Fig. 1 can be solved by keeping the temperature of the inner core 10 during manufacture close to the lowest temperature expected during use. can. That is, during use, the temperature rises compared to when manufactured, so the inner core 10 expands more than the outer jacket 12, but the expansion of the inner core 10 compresses the intermediate layer 14, and the air inside the intermediate layer 14 is compressed. Exhausted to the outside from the supply/discharge port 16, the outer sheath 12
The tension caused by the expansion of the inner core 10 does not act on the outer sheath 1.
2 will not fatigue or break.

Further, when the temperature becomes lower than this state, the inner core 10 contracts more than the outer sheath 12, but at that time, the intermediate layer 14 sucks outside air from the supply/discharge port 16 and expands, so the outer core 10 contracts more than the outer sheath 12. 12 does not become loose and wrinkles do not occur. Therefore, the appearance will not be impaired and the wrinkled peaks will not be damaged.

In the above embodiment, the outer shape of the fender is cigar-shaped, but it can be made into various shapes such as a columnar shape or a prismatic shape depending on the place of use. In addition, supply/discharge port 1
Although only one hole 6 is provided at the center of one end of the outer sheath 12, it may be provided at any location as long as it penetrates inside and outside, and the number of holes may be increased depending on the situation. Furthermore, although the supply/discharge port 16 is formed by boring through the outer sheath 12, a tubular metal fitting having flange-like portions on both the inner and outer surfaces of the outer sheath 12 may be inserted therethrough. Note that this fender can also be used as a float.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a conventional fender, and FIG. 2 is a longitudinal sectional view of a fender according to this invention. 10... Inner core, 12... Outer cover, 14... Middle layer, 16... Supply/discharge port.

Claims (1)

[Scope of utility model registration request] A hollow outer sheath made of a non-stretchable material, an inner core made of a single cell elastic body provided within the outer sheath, and a space between the inner circumferential surface of the outer sheath and the outer circumferential surface of the inner core. A fender comprising an intermediate layer made of an open-celled or semi-open-celled elastic material interposed so as to be in contact with each other, and a supply/discharge port drilled in the above-mentioned outer jacket so as to communicate with the inside and outside.