JPS6127840Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an observation buoy used for collecting oceanographic information.

A conventional observation buoy of this kind, as shown in FIG.
A parachute 3 provided at the top of the buoy opens, and the parachute 3 allows the buoy main body 2 to maintain a stable attitude and land on the sea surface at an appropriate falling speed. The buoy body 2 that has landed on the water is once submerged in the sea as shown in Figure 1b, but the gas generation mechanism installed inside the buoy body 2 is activated by a seawater battery or a power supply circuit closed by seawater. , the float 4 is expanded as shown in FIG. 1c, and the parachute 3 is
In order to separate the buoy body 2 from the buoy body 2, the buoy body 2
It rises to the surface and floats on the sea surface as shown in Figure d. A cable 5 is let out from the bottom of the buoy body 2, and a sensor 6 provided at the tip of the cable 5 is suspended at a predetermined depth to obtain ocean information.

However, the above-mentioned conventional observation buoy has the drawbacks of having a large number of parts and being expensive because the parachute and float are operated separately.
In order to activate the gas generation mechanism and expand the float, the float is expanded to a depth where the relationship between the submerged depth Hm of the buoy body and the internal pressure of the float P ₀ Kg/cm ² becomes P ₀ > H/10. However, there were difficulties in increasing reliability.

The purpose of the present invention is to solve these drawbacks, and for this purpose, a bag-shaped resistor made of cloth or rubber, etc., whose lower end is wide open and the upper end is narrowed or closed, is attached to the outer periphery of the float, and an observation buoy is installed. Immediately after the buoy is dropped by an aircraft, the float is inflated, and the bag-shaped resistor stabilizes the falling posture of the buoy body, and at the same time obtains an appropriate falling speed.

To explain the following with reference to the drawings, Fig. 2a is a longitudinal sectional view showing an embodiment of the present invention, Fig. 2b is a plan view, 2 is a buoy body, and 4 is a float attached to the buoy body 2. . Reference numeral 7 denotes a bag-shaped resistor made of thin cloth or soft rubber, with a large opening at the lower end and a narrowed or closed upper end. This bag-like resistor 7 has a plurality of vertical line-shaped joints set at equal intervals, and each joint is placed at a predetermined position on the outer peripheral surface of the float 7, for example, at each edge 8.
This allows an equal space to be formed between each surface of the float 4.

Although the float 4 is formed into a roughly quadrangular pyramid shape in the figure, it is not limited to this shape, and the bag-shaped resistor 7 can be attached to the float 4 even if it is, for example, a triangular pyramid or a cone.

Next, the operation of the above-described configuration will be explained. First, before the observation buoy is dropped from the aircraft 1, the float 4 and the bag-shaped resistor 7 are folded and housed in the upper part of the buoy body 2 of the observation buoy. Therefore, as shown in Figure 3a, we placed an observation buoy on the aircraft 1.
When dropped from the buoy body 2, the gas generating mechanism housed within the buoy body 2 operates to inflate the float 4, and the expanded float 4 protrudes above the buoy body 2. Note that the gas generation mechanism can be operated by an arming wire (not shown) attached to the aircraft 1. When the float 4 expands and falls, the weight of the buoy body 2 causes the float 4 to rise as shown in Figure 3b, and the bag-shaped resistor 7 attached to the outer periphery of the float 4 becomes filled with air. As a result, the buoy main body 2 stabilizes its falling posture and simultaneously falls at an appropriate falling speed, landing on the sea surface. After landing on the water, the buoy main body 2 floats on the sea surface without being submerged in the water because the float 4 has already expanded, and the cable 5 is let out from the bottom as shown in Figure 3c. The sensor 6 provided at the tip is suspended at a predetermined depth to obtain ocean information.

As mentioned above, the bag-like resistor 7 is made of thin cloth or soft rubber, so it not only does not hinder the floating of the buoy body 2 and the float 4 after landing on the water, but also prevents the buoy body 2 and the float 4 from floating during stormy weather. Buoy body 2
When the buoy body 2 and the float 4 are tilted, seawater enters between the buoy body 2 and the float 4, which has the advantage of suppressing the movement of the buoy body 2 and the float 4.

In addition, the falling speed of the buoy body 2 is determined by the rate at which the bag-shaped resistor 7
The larger the opening on the lower end side of the bag-like resistor 7, the slower the drop can be made, and the stability of the falling posture can be ensured by adjusting the opening on the upper end of the bag-like resistor 7.

As explained above, the present invention inflates the float immediately after being dropped from an aircraft, stabilizes the falling posture of the buoy body using a bag-shaped resistor attached to the outer periphery of the float, and at the same time maintains an appropriate falling speed. This makes it possible to omit the parachute used in conventional buoys, reducing the number of parts and reducing manufacturing costs. ,
It has the effect of increasing reliability because it floats on the sea surface without submerging in water.

[Brief explanation of the drawing]

Fig. 1 a, b, c, and d are operation process diagrams showing a conventional example; Fig. 2 a, b are longitudinal cross-sectional views and plan views showing an embodiment of the present invention; Fig. 3 a, b, and c are FIG. 3 is an operation process diagram of the embodiment of FIG. 2; 1... Aircraft, 2... Buoy body, 4... Float, 7... Bag-shaped resistor, 8... Ridge.

Claims (1)

[Scope of utility model registration request] For observation buoys dropped from aircraft, the lower end is wide open and the upper end is narrowed or closed to create equal space between each side of the float on the outer periphery of the float to float the buoy body on the sea surface. A bag-like resistor made of cloth or rubber is attached to each of the joints, and a bag-shaped resistor made of cloth or rubber is set with a plurality of vertical line-shaped joints so as to be able to form a resistor. An observation buoy characterized by being provided with a gas generation mechanism that inflates the float that is folded and stored in the upper part of the buoy body.