JPH0114945Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a protection device for sonar transducers.
More specifically, the present invention relates to an improvement in a protection device attached to the bottom of a ship surrounding a sonar transducer provided on the bottom of the ship.

In the first place, the protection device for sonar transducers is the first
As shown in Figure A, for the purpose of protecting the sonar transducer F installed on the bottom Sa of the ship S, it is attached to the bottom Sa so as to cover it. It is composed of a protective cover mounting body 100 that surrounds the sonar transducer F and is attached to the bottom Sa of the ship, and a protective cover main body 200 that is detachably attached to the protective cover mounting body 100.

The conventional protection device for a sonar transducer is shown in Fig. 1(b), which is an enlarged bottom view of the protective cover mounting body, and Fig. 1(c), which is an enlarged front view showing the state in which the protective cover body is attached to the protective cover mounting body. As shown in FIG. 3, the bead fitting recesses a provided on the joint surfaces of the inner mold 10 and the outer mold 20 constituting the protective cover mounting body 100 are formed in the same shape corresponding to each other over the entire circumference. ing.

Therefore, when attaching the protective cover main body 200 to the protective cover attachment body 100, the inner mold 10 is divided into a plurality of inner mold constituent members 11 as shown in the figure, and the bead portion of each inner mold constituent member 11 is It has been common practice to assemble each inner mold component 11 while fitting the bead portion 220 of the protective cover body 200 into the fitting recess a.

However, in the conventional sonar transducer protection device, the bead portion 2 of the protective cover body 200 is shown in FIG.
As shown in the enlarged cross-sectional explanatory diagram around 20, a plurality of reinforcing layers B for reinforcing the protective covering 210 reinforce the protective covering 210.
1, B2... are folded back from the outside to the inside around the bead wire 221 buried in the bead part 220, and the folded parts B1b,
The protective cover 210 and the bead portion 220 are integrated by overlapping and bonding B2b... to the reinforcing layer before folding.

Therefore, when a water pressure higher than the external water pressure is applied to the inside of the protective cover main body 200 for the purpose of improving external pressure resistance, the folded portion and There is a risk that the joint with the reinforcing layer before folding may peel off.

Conventionally, in order to solve this problem, a second
As shown in the figure, the length of the folded portion is made sufficiently long to increase the joint area.

As a result, the wall thickness around the opening of the protective cover 210 becomes thicker than the other parts over a large area, which deteriorates the acoustic performance and inhibits the flexibility of the protective cover body 200. In addition, since tensile force is applied to the bead portion 220 from only one side by the reinforcing layer B for reinforcing the protective cover, the bead portion 220
There were some problems, such as twisting.

The present invention was developed as a result of studies to solve the above-mentioned problems.

Therefore, the purpose of the present invention is to improve the acoustic performance by making the thickness of the protective cover uniform by devising a reinforcing structure of the main body of the protective cover, especially near the joint between the protective cover and the bead. An object of the present invention is to provide an excellent protection device for a sonar transducer that has uniform flexibility and does not have a bead part twisted.

In other words, the present invention consists of a protective cover mounting body that surrounds the sonar transducer installed on the bottom of the ship and is attached to the bottom of the ship, and a protective cover body that is removably attached to the protective cover mounting body. The main body includes a protective cover made of a rubber-like elastic body with a reinforcing layer embedded in it, which has a streamlined longitudinal profile and an approximately semicircular cross-sectional shape, and is positioned around the opening of the protective cover. and a bead portion with a bead wire embedded therein, and an inner protective cover reinforcing reinforcing layer for reinforcing the protective cover is placed around the bead wire from the inside to the outside. At the same time, the outer protective cover reinforcing reinforcing layer is folded back from the outside to the inside around the beat wire, and each folded portion is superimposed and joined to each of the reinforcing layers before folding. The gist of this article is a protective device for sonar transducers that is characterized by its characteristics.

Hereinafter, the present invention will be explained in detail by way of examples with reference to the drawings.

FIGS. 3 to 5 each show a protection device for a sonar transducer according to an embodiment of the present invention.
FIG. 3 is an enlarged cross-sectional explanatory view showing the main part in the first embodiment, that is, the vicinity of the bead of the protective cover body;
The figure is an enlarged cross-sectional explanatory view showing the main part in the second embodiment, that is, the vicinity of the bead part of the protective cover body, and FIG. be.

In the figure, E indicates a protection device for a sonar transducer according to an embodiment of the present invention, which is composed of a protective cover mounting body 100 and a protective cover body 200 detachably attached to the protective cover mounting body 100. ing.

In the present invention, the protective cover body 200
The protective cover 210 is made of a rubber-like elastic body with a reinforcing layer embedded therein, and the outer shape in the longitudinal direction is formed into a wavy line shape and the cross-sectional shape is approximately semicircular.
The bead portion 220 is integrally attached to the periphery of the opening and has a bead wire 221 embedded therein. Here, protective cover 2
The periphery of the opening 10 corresponds to the bead portion 220 attachment position.

Moreover, in the present invention, in particular, the reinforcing layer A for reinforcing the inner protective covering 210 reinforces the protective covering 210.
is folded back from the inside to the outside around the bead wire 221, and the outer protective covering reinforcing layer B is folded back around the bead wire 221 from the outside to the inside, and each folded portion Aa , Bb are superimposed on and bonded to each reinforcing layer before folding.

To further explain this structure in detail, in the first embodiment, as shown in FIG.
The reinforcing layer A for reinforcing the inner protective cover that reinforces the
Around the bead wire 221 embedded in the bead portion 220, fold it back from the inside to the outside, and add a reinforcing layer B for reinforcing the outer protective covering.
The bead wire 221 is folded back from the outside to the inside, and each folded portion Aa, Bb
The bead portion 22 of the protective cover 210 is bonded to the reinforcing layer before each folding.
It is integrated with 0.

Next, the manufacturing process of the protective cover body 200 described above will be briefly explained with reference to FIGS. 6a to 6e. That is, (1) First, as shown in FIG. 6a, an unvulcanized outer protective cover made of a rubber-like elastic body with a reinforcing layer embedded along the inner surface of the protective cover vulcanization outer mold 20. At the same time as pasting the reinforcing reinforcing layer B, the upper part B
1 is placed on the upper surface of the flange portion 20a of the protective cover vulcanization outer mold 20 as shown in the figure.

(2) Next, the upper part B1 of the reinforcing layer B for reinforcing the protective covering.
As shown in FIG. 6b, the bead support jig 30 is placed on the upper surface of the flange portion 20a on which the bead support part 3 of the bead support jig 30 is placed.
The bead wire 221 is placed on the unvulcanized inner protective covering reinforcing layer B made of a rubber-like elastic body with a reinforcing layer embedded along the inner surface of the reinforcing layer B for reinforcing the protective covering. The reinforcing layer A is stretched, and the upper part A1 thereof is placed on the upper surface of the bead support jig 30 via the bead wire 221 as shown in the figure.

(3) In this state, after removing the bead support jig 30, remove the reinforcing layer A for reinforcing the inner protective cover.
As shown in FIG. 6c, the upper part A1 of the is folded back from the inside to the outside around the bead wire 221, and each folded part Aa is formed into a reinforcing layer A for reinforcing the inner protective covering before each folding.
Overlap and join.

(4) Next, in (1) above, the outer mold 20 for curing the protective cover is
As shown in FIG. 6d, the upper part B1 of the outer protective cover reinforcing layer B placed on the upper surface of the flange portion 20a is folded back from the outside to the inside around the bead wire 221. , each folded portion Bb is overlapped and bonded to the outer reinforcing layer B for reinforcing the protective covering before each folding.

(5) After that, the outer mold 40 for bead part vulcanization is attached to the upper part of the outer mold 20 for vulcanizing the protective cover, and the inner mold 41 for bead part vulcanization is attached thereto.
It is attached as shown in Figure e, and the unvulcanized inner and outer reinforcing layers A and B for reinforcing the protective cover are vulcanized using high-pressure and high-temperature steam.

Next, the second embodiment shown in FIG.
In the embodiment, the reinforcing layer A for reinforcing the inner protective covering
This is an example of a two-layer arrangement. That is, in this embodiment, as shown in the drawing, the first inner protective covering reinforcing layer A1 for reinforcing the protective covering 210 is attached to the bead wire 2 embedded in the bead portion 220.
21, the reinforcing layer B for reinforcing the protective cover is folded back around the bead wire 221 from the outside to the inside, and a second inner protective layer is folded around the bead wire 221. The reinforcing layer A2 for reinforcing the cover is attached to the bead wire 2.
21, fold it back from the inside to the outside, and each folded part A1a, A2a and Bb,
The protective cover 210 and the bead portion 220 are integrated by overlapping and bonding to the reinforcing layers before each folding.

Further, in the third embodiment shown in FIG. 5, as in the second embodiment described above, two reinforcing layers A for reinforcing the inner protective cover are arranged, and a reinforcing layer B for reinforcing the outer protective cover is also arranged. This is an example of a two-layer arrangement.

It goes without saying that the second and third embodiments described above can also be manufactured by the same manufacturing method as the first embodiment described above.

As described above, the present invention folds back the inner reinforcing layer for reinforcing the protective covering around the bead wire from the inside to the outside, and folds the reinforcing layer for reinforcing the outer protective covering around the bead wire. The bead wire is folded around the bead wire from the outside toward the inside, and each folded portion is superimposed and bonded to the reinforcing layer before each fold, so that the following effects are achieved. That is, (1) the tensile force acting on the bead portion can be averaged on the inside and outside, and twisting of the bead portion can be prevented.

(2) The thickness around the opening of the protective cover can be prevented from increasing over a large area compared to the thickness of other parts, and acoustic performance can be improved.

(3) The flexibility of the protective cover body can be made uniform.

[Brief explanation of the drawing]

Figure 1A is a front view explanatory view showing a state in which a sonar transducer protection device is installed on a ship, Figure 1B and C are views showing a conventional sonar transducer protection device, and Figure 1B is a Figure 1 is an enlarged bottom view of the protective cover mounting body;
The figure is an enlarged cross-sectional view of the vicinity of the bead of the protective covering body in a conventional sonar transducer protection device, and FIGS. 3 to 5 each show a sonar transducer protection device according to an embodiment of the present invention. FIG. 3 is an enlarged cross-sectional explanatory view showing the main part in the first embodiment, that is, the vicinity of the bead of the protective cover body;
FIG. 4 is an enlarged cross-sectional explanatory view showing the main part in the second embodiment, that is, the vicinity of the bead of the protective cover body;
The figure is an enlarged cross-sectional explanatory view showing the main part in the third embodiment, that is, the vicinity of the bead part of the protective cover body, Fig. 6a
-e are explanatory views showing the manufacturing process of the protective cover body, respectively. 100... Protective cover mounting body, 200... Protective cover body, 21... Protective cover, 220... Bead portion, 2
21... Bead wire, A... Reinforcement layer for reinforcing the inner protective cover, B... Reinforcement layer for reinforcing the outer protective cover, Aa, Bb... Each folded part of each reinforcing layer for reinforcing the inner and outer protective cover, Sg...Bottom, F...Sonar transducer.

Claims (1)

[Scope of utility model registration request] a protective covering mounting body that is attached to the bottom of the ship and surrounds a sonar transducer provided on the bottom of the ship;
It consists of a protective cover main body that is removably attached to the protective cover mounting body, and the protective cover main body is made of a rubber-like elastic body with a reinforcing layer embedded in it. It is composed of a protective cover formed in a circular shape, and a bead part that is integrally attached to the periphery of the opening of the protective cover and has a bead wire embedded inside. The reinforcing layer for reinforcing the protective covering is folded back from the inside to the outside around the bead wire, and the outer reinforcing layer for reinforcing the protective covering is folded back around the bead wire from the outside to the inside. Each folded part,
A protection device for a sonar transducer, characterized in that the protection device is bonded to the reinforcing layer before each folding.