JPH04102505U - Suspension cable structure - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose of the present invention is to provide a low-cost suspension cable that can reduce the storage volume without impairing the function of the ocean sensor when storing the ocean sensor in a storage case. [Structure] The sheathing material of the curl cable, which is a component of the suspension cable and has a spiral spring property, is made of a low elastic modulus elastomer resin, and its outer diameter is increased from, for example, the conventional approximately 6.7 mm to approximately 5 mm. It was formed with a smaller diameter. As a result, the spring constant does not become large, and the outer diameter is made smaller, which improves storability.Furthermore, since it is not made of special material, it can be realized at low cost.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is used in marine sensors to suspend the sensor at a desired depth underwater. This relates to the structure of the suspension cable.

0002

[Conventional technology]

Figure 3 shows the overall configuration of a marine sensor using a conventional suspension cable. This is a side view. In the figure, 1 is a float floating on the water surface, and 2 is a float floating on the water surface. A suspension cage attached to the bottom surface of the seat 1 and suspended from the bottom surface. This suspension cable 2 has a spiral shape as shown in the figure. It has a coil spring structure that can be freely contracted. 3 is connected to the lower end of this suspension cable 2 and extends further downward. The damper 4 is suspended from the lower end of the cable. 5 is below this damper 4 A sensor suspended from the surface via a cable 6, which measures the temperature of the water, the speed of water flow, etc. These sensors detect directions, etc., and constitute an ocean sensor.

0003 The ocean sensor has a predetermined size (not shown) until it is installed underwater. The items are stored folded or rolled up in a cylindrical storage case. It is dropped onto the water from an aircraft or ship, and is affected by the impact etc. when it lands on the water. It is removed from the storage case and placed in the water as shown in the figure. vinegar In other words, float 1 floats above the water surface, and suspension cable 2 and cable 3 , 6 are unwound due to the weight of the sensor 5 and extend downward through the water. and stop when suspension cable 2 and cables 3 and 6 are fully extended. Therefore, the sensor 5 is installed at a predetermined depth that has been set in advance. Figure 4 is an enlarged view of the main parts showing the structure of the suspension cable mentioned above. The pension cable 2 is a straight cable made of an insulating and elastic material such as rubber. The rubber cord 7 and the rubber cord 7 are surrounded in a spiral manner so as to cover the periphery of the rubber cord 7. The coil cable 8 has a coil spring structure.

0004 FIG. 5 is an enlarged sectional view of the curl cable, and the curl cable 8 is shown in this figure. As can be seen, there are two conductors 9 and the conductors 9 are covered and held at a predetermined distance. cable sheathing 10 as a sheathing material, and this cable sheathing 10 is water resistant for underwater use, and the performance and detection information of sensor 5. Priority is given to insulation to avoid affecting the The material of the cover 10 is hard material such as high-density polyethylene or vinyl chloride. This was formed into a spiral coil spring-like structure.

[0005]

[Problem that the idea aims to solve]

However, according to the conventional technology described above, ocean sensors have a limited size collection. Place each component in the storage case, including the float, suspension cable, and It has a structure that stores sensors, etc., and the suspension cable Other components, such as sensors, may become larger or require longer cable lengths. As the need arises, the space occupied by these storage cases increases. If the suspension cable volume has to be reduced due to The finished outside diameter of the curled cable in the previous suspension cable was changed as is. There are ways to make it smaller and reduce its volume. In other words, suspension cable storage The volume is determined by the finished outer diameter of the curled cable and the entire length of the suspension cable. This is because it is determined by the length.

[0006] However, as mentioned above, by reducing the finished diameter of the curl cable, the volume can be increased. When trying to reduce the spring constant of a suspension cable, its typical spring characteristics (Determining factors for spring characteristics are the number of turns of the spring, wire diameter, and spring diameter) This causes a problem in that the ocean sensor functions to suppress wave agitation deteriorate. It will end up being alive. Therefore, if you make sure that the spring constant does not increase even if you reduce the finished diameter, Although the above problem is solved, it is difficult to realize such a suspension cable. In order to It is necessary to change to a special rubber that is strong and soft, or to develop a new one. However, this may mean that normally easily available rubber cannot be used, or that it requires a large amount of development cost and time. This will require a lot of time, and the cost will increase significantly. Therefore, there is no deterioration in the performance of the suspension cable, and the cost is low. None of the above methods are technically satisfactory for reducing the storage volume in the storage case. It was not something that could be done.

[0007] This invention was made to solve the above-mentioned problems, and the storage case Decrease the storage volume of the suspension cable by reducing the finished outer diameter of the curl cable There are various problems that arise when reducing the spring constant due to changes in the spring constant. Without deteriorating the sensor function or using a special material for the rubber cord, Achieves a smaller diameter curled cable without the need for development that requires significant cost and time. Provides a suspension cable structure with excellent storage and spring properties at low cost. The purpose is to

[0008]

[Means to solve the problem]

In order to achieve the above-mentioned purpose, the present invention uses a straight rubber cord and a conductor covered with a straight rubber cord. The outer peripheral surface of the rubber cord is covered with a spiral material and has a spring property. The sensor is suspended and supported at a desired depth underwater. In the suspension cable structure of a marine sensor for The cable sheathing material is made of a low modulus elastomer resin. This low modulus elastomer resin is polyester elastomer resin. resin, urethane resin, or a combination of urethane resin and vinyl chloride resin It is made of resin.

[0009]

[Effect]

According to the above configuration, the curl cable is made of elastomer resin with a low elastic modulus. Because the elastic modulus is low, the outer diameter of the conventional curl cable can be stored in a storage case. Even if the diameter is made smaller to improve storage capacity, the spring constant will not increase. , the same spring constant as before is maintained.

0010

【Example】

An embodiment of the present invention will be described below with reference to the drawings. Figure 1 shows the suspension case. Figure 2 is an enlarged view of the main part showing the structure of the curl cable, and Figure 2 is a sectional view of the main part showing the structure of the curl cable. be. In FIGS. 1 and 2, 11 is a suspension cable, its component structure is almost the same as the conventional one, with a straight rubber cord 7 in the center and a spiral around it. It consists of a curl cable 12 with a coil spring structure surrounded by In the example, the outer diameter D of this curl cable 12 is 5 mm from the conventional 6.7 mm. The diameter of the curl cable 12 has been reduced, and the cable as a covering material that makes up the curl cable 12 has been made smaller. The material of the cable covering 13 is changed to a resin material with a low elastic modulus as described below.

[0011] In other words, as a low modulus elastomer resin, (1) Polyester elastomer resin (2) Urethane resin (3) Resin made by combining urethane resin and vinyl chloride resin Using three types of materials, each material can be used to create a curl case with an outer diameter D = 5 mm. A bull 12 is formed. Table 1 shows curl cables 12 made of the various materials mentioned above and high-density polyester. It shows a comparison of the spring constant with the conventional curl cable 8 made of tyrene. For those made of high-density polyethylene, the outer diameter is D = 6.7 mm. This shows the values for two types of curled cables, one with a smaller diameter, and the other with a smaller diameter of D = 5mm. ing.

0012

[Table 1] Note: The length of the sample shall be 1 m.

[0013] As seen in this figure, conventional high-density polyethylene material is used, and the outer diameter is D= If the spring constant of 0.44 for the 6.7 mm is used as the reference value, then the material is If the outer diameter is reduced to D=5mm without changing, the spring constant will be 0.75. It becomes about 1.7 times larger. However, using each of the resins (1), (2), and (3) mentioned above, the outer diameter D = 5 mm. The spring constants are 0.44, 0.44, and 0.43, respectively. , it is possible to obtain a value that is almost the same as the reference value spring constant (0.44) shown earlier. I understand.

[0014]

[Effect of the idea]

As explained above, according to the present invention, the coating material of the curl cable has a low elastic modulus error. The outer diameter of the curl cable was reduced because it was formed using stromer resin. However, the spring constant will not increase even if the spring constant is the same as before. can be used without compromising the function of ocean sensors to suppress wave agitation. It is possible to improve the storage efficiency in a storage case. Additionally, it is possible to obtain the above effect simply by changing the material of the curl cable. In order to Since there is no need to do this, you can reduce cost increase and create a low-cost and high-performance suspension. tion cable structure.

[Brief explanation of drawings]

FIG. 1 is an enlarged view of main parts showing the structure of a suspension cable of this embodiment.

FIG. 2 is a sectional view of a main part showing the structure of the curl cable of this embodiment.

FIG. 3 is an overall side view showing a configuration example of a conventional ocean sensor.

FIG. 4 is an enlarged view of main parts showing the structure of a conventional suspension cable.

FIG. 5 is a sectional view of a main part showing the structure of a conventional curl cable.

[Explanation of symbols]

7 Rubber cord 11 Suspension cable 12 Curl cable 13 Cable sheathing

──────────────────────────────────────────────── ─── Continuation of front page (72) Creator Yasunori Nakata Oki Electric, 1-7-12 Toranomon, Minato-ku, Tokyo Inside Kogyo Co., Ltd.

Claims (4)

[Scope of utility model registration request] [Claim 1] Consisting of a straight rubber cord and a curled cable formed by covering a conductor with a covering material, the outer circumferential surface of the rubber cord is spirally covered to give it spring properties, and 1. A suspension cable structure for a marine sensor for suspending and supporting a sensor at a desired depth, characterized in that the covering material of the curl cable is made of a low modulus elastomer resin. 2. The suspension cable structure according to claim 1, wherein the low modulus elastomer resin is a polyester elastomer resin. 3. The suspension cable structure according to claim 1, wherein the low modulus elastomer resin is a urethane resin. 4. The suspension cable structure according to claim 1, wherein the low elastic modulus elastomer resin is a resin made by synthesizing urethane resin and vinyl chloride resin.