JP3020440B2 - Buoy antenna device and storage method thereof - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a buoy antenna device for notifying a ship distressed position dropped from an aircraft or the like and a method of storing the antenna device.

[0002]

2. Description of the Related Art A structure is adopted in which an antenna is extended after landing on water.
A method of extending the antenna by applying the gas pressure of a gas cylinder using a water pressure sensor (for example, Japanese Patent Publication No. 55-1317)
0) and a method in which the antenna base is connected to the top surface of the target with a coil spring, the antenna is bent 180 ° at the coil spring at the base, and temporarily fixed to the side surface of the target with a water-soluble tape.

[0003]

The method of extending the antenna with a gas cylinder is dangerous if it malfunctions during inspection. In the case of using a coil spring for the antenna base, the antenna base is connected to the top surface of the target body by the coil spring. As a result, the antenna shakes due to the buoy shaking, and the transmission performance may be reduced.

The present invention has been made in view of the above problems. The antenna base is fixed to the rotation axis in the radial direction with the central axis horizontal, and the rotation axis is fixed in the antenna upright position. . However, the radio buoy is dropped into the water and the annular buoyant body expands, and at the same time, the antenna rotates in the upright direction from the retracted state with the urging force of the spring, but the expansion of the buoyant body and the rotation of the antenna interfere and the antenna is erected. There was something I couldn't do. SUMMARY OF THE INVENTION The present invention solves this problem and provides a buoy antenna device and a method for storing the buoy, in which the buoyant body is easily expanded and the antenna is turned upright.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is directed to a housing for accommodating an annular buoyant body which is evacuated and folded into an umbrella-like shape in a concave portion of a target body.
A rotation axis that fixes the antenna base is provided in the horizontal radiation direction,
A retractable antenna mounting portion having a spring biased so as to rotate and push the rotating shaft in the axial direction, and having a fixing means in an upright state of the antenna; The antenna is rotated downward and stored in a position where the upper half of the antenna fits on the inner surface of the cylindrical cover outside the folded annular buoyant body in front of the downward vertical position. The direction is opposite to the winding direction when the annular buoyant body is stored. With such a configuration, the expansion of the annular buoyant body and the upright rotation of the antenna can be easily performed at the time of landing of the buoy without interference.

[0006]

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a buoy specimen 1 in which an upper specimen 2 and a lower specimen 3 are connected by a support 4, a recess 5 is formed around the support 4, and a vertical slit is formed. 6a, the recessed portion 5 is covered with an elastic cylindrical cover 6 to form a cylindrical target 1, and a central mounting portion of a chargeable annular buoyant body provided with a gas cylinder for charging is fixed to the lower surface of the upper target 2. Then, the annular buoyant body is folded into an umbrella-like shape so as to be wound around the column 4 in an evacuated state, and is housed in the cylindrical cover 6, and the mounting portion 9 of the antenna device is fixed to the outer end of the antenna base portion. A rotating shaft 9a located in a horizontal radial direction from the center of the target body, and a bearing unit having a means for rotating the rotating shaft from the retracted state to an upright position in an upright position and fixing the rotation of the rotating shaft in the upright position; ,
A spring 9k that urges the antenna in a direction of rotating the rotating shaft from the retracted state to the upright position and pushing the antenna outward.
And the antenna mounting portion 9 is fixed to the upper outer surface of the upper specimen 2, and the antenna 10
Is turned downward, and stored in a position where the upper half of the antenna fits between the outside of the folded annular buoyant body and the inner surface of the cylindrical cover, just before the downward vertical position, and stands up from the stored state of the antenna. A buoy antenna device, wherein the direction is opposite to the winding direction when the annular buoyant body is stored.

In the buoy antenna device,
The annular buoyancy body is evacuated to a flat state, and is wrapped in a umbrella-like shape around a column so as to form a plurality of broken lines at equal intervals radially from the center of the plane, and is housed in the folding recessed portion 5, and the antenna is lowered. And the upper half of the antenna is positioned in front of the downward vertical position, the slit 6a is pushed open against the urging force to close the cylindrical cover, and the concave portion is formed to cover the upper half of the antenna. A method for storing a buoy antenna device, characterized by covering the buoy antenna device.

With the above-described structure, the buoy is dropped into the water, the gas cylinder of the annular buoyant body is operated and the air is expanded, and the pressure overcomes the urging force to close the cylindrical cover, and the cylindrical cover is closed. When the cover is removed by pushing and spreading, the rotating shaft is rotated by the urging force of the spring of the antenna mounting portion, and the antenna is rotated in the upright direction. At the same time, the buoyant body expands so as to rotate in a direction opposite to the direction in which the buoyant body is wound around the column, and flips up in a direction in which the antenna stands. Therefore, the air expansion of the annular buoyant body and the upright rotation of the antenna can be easily performed without interference.

[0009]

An embodiment will be described with reference to the drawings. FIG.
Is a conceptual diagram of a buoy, and a two-dot chain line indicates a state where the stabilizer (in this example, a parachute) is open and falling. FIG.
The part sectional front view of the buoy, Figure 3 is a part sectional side view thereof. In the drawing, reference numeral 1 denotes a reference body, reference numeral 2 denotes an upper body, and reference numeral 3 denotes a lower body, which are connected by a support 4 (for example, by welding). Reference numeral 5 denotes a concave portion, and reference numeral 6 denotes a cover. The target is made of a corrosion-resistant aluminum alloy, and the cover 6 is made of a resin, for example, polycarbonate, and is formed by cutting a cylinder into a slit 6a. When the polycarbonate tube is cut vertically and the internal stress is released, the tube is further rolled up to a smaller diameter. The position of the slit 6a is set to the position of the power switch 11. Reference numeral 7 denotes a high-pressure gas cylinder for air charging attached to an air-filled annular buoyant body 8, which is usually used for a life jacket or the like . It is designed to automatically release gas when immersed in water. The two- dot chain line in the figure shows a state in which the buoyant body is inflated. Reference numeral 9 denotes a mounting portion of the antenna, 10 denotes a state in which the antenna is housed by the antenna, and the two- dot chain line antenna denotes an upright state. The antenna is a thin round rod of stainless steel with considerable elasticity. FIG. 2 shows the storage state of the buoyant body 8 in an evacuated state. FIG. 2A shows a folding line when the buoyant body 8 is folded and wound around the column 4 in an umbrella shape. 8d is a hook- and- loop fastener and a buoyancy body 8
When the antenna is folded down and the antenna is stowed in the stowed state and the antenna is stowed downward, the work is facilitated by covering the band with the band for retaining the antenna. The hook-and-loop fastener easily comes off due to the aerating and expanding of the buoyant body.

FIGS. 4A and 4B are component diagrams of the cover 6, wherein FIG. 4A is a plan view and FIG. 4B is a front view. 6a is a slit, and 6b is a water passage hole, which is formed on the opposite side of the slit 6a.

FIGS. 5 (a), 5 (b) and 5 (c) are AA view, BB view and CC view of FIG. 3, respectively. 8a is a mounting portion of the buoyant body 8 where the fabric of the material of the buoyant body is combined and adhered and reinforced, and is fixed to the lower surface of the target body 2 with screws. 8c is a buoyant body slit through which the upper specimen 2 passes. (B) shows a state in which the buoyancy body 8 in the deflated state is folded into a umbrella shape. In (c), the position of the slit 6a of the cover is near the switch, which facilitates the operation of the switch.

FIG. 6A is a longitudinal sectional view of the antenna mounting portion 9, FIG. 6B is a front view, and FIG. 6C is a rear view. FIG. 6 shows the stowed state of the antenna, which is stored at a position slightly returned in the upright direction from the downward vertical position. Arrows indicate the direction of rotation when the antenna is turned upright from the storage position of the antenna. In the figure, reference numeral 9a denotes a rotation axis, and the central axis is in a horizontal radial direction with respect to the center of the target. Reference numeral 9b denotes a bearing portion which comprises a bearing 9c and an insulating portion 9d screwed so as to surround the bearing 9c. 9g is a guide pin provided on the rotary shaft by means of shaft rotation fixing means, 9f is a concave groove into which the guide pin is fitted and fixed when the antenna is upright, 9h is a guide surface of the guide pin, 9j is a stopper of the guide pin and the antenna is downward. Guide pin 9g so that it does not turn to the vertical position
It is a stop par. 9k is a spring (coil spring) housed in a spring chamber 9m of the rotating shaft, and both ends are fixed so as to apply a pushing force and a rotating force to the rotating shaft and the bearing 9c. When the cover 6 comes off, the rotating shaft 9a rotates while being pushed outward by the urging force of the spring, and the guide pin 9g rotates while sliding on the guide surface 9h (in the direction of the arrow in the figure) and fits into the concave groove 9f to be inserted into the antenna. Is fixed in an upright state. In this example, the guide surface is formed as a spiral surface so that the guide surface can be easily pushed and rotated. However, if the urging force is strong, the guide surface may be simply a vertical surface. Also, in this example, the stopper 9j of the guide pin at the time of storing the antenna is provided so that the antenna is rotated against the urging force of the spring and stopped at a predetermined position before the downward vertical position. , The antenna may be stopped at that position, the cover 6 may be set, or the stopper 9j may be omitted. 9
n is an antenna terminal provided on the insulating part 9d.

FIG. 7 is a diagram showing the upright state of the antenna.
(A) is a side view, (b) is a front view, (c) is a rear view. The guide pin 9g is fitted and fixed in the groove 9f, and the antenna 10 is fixed in the upright position. 10a is a set screw of the antenna.

FIGS. 8, 9 and 10 are component diagrams of the rotating shaft 9a, the bearing 9c and the coil spring 9k, respectively. A spring chamber 9m is provided in a cylindrical shape on the rotating shaft 9a, and 9p is a rotating shaft and a bearing. Is a fitting hole at the end of the spring provided at the end.

[0015]

The present invention is embodied in the form described above and has the following effects.

By stopping the mounting of the antenna on the upper surface of the target body 1 with a coil spring and fixing the antenna in an upright state at the antenna mounting portion, the antenna does not swing and the transmission performance is ensured.

The provision of the antenna mounting portion on the upper side surface of the target makes it easier to mount the parachute-type stabilizer on the top surface of the target.

An upper body and a lower body are connected by a support, a recess is formed around the support, and a rechargeable buoyant body is folded and stored therein. When the target was covered from above, the outer shape of the target body became cylindrical, the outer surface became smooth without any protrusion, and it was easy to drop from the cylindrical dropping device.

Also, the antenna is tiltable so that it is turned downward so as to be turned downward, and the direction in which the antenna is turned upright by the urging force of the spring is opposite to the direction in which the buoyant body is wound around the folding column in an umbrella shape. As a result, the buoy is dropped into the water and the buoyant body is inflated and inflated, the cover comes off and the antenna tries to stand up and rotate due to the biasing force of the spring, but at the same time expands in the direction in which the buoyant body unwinds in the opposite direction to the winding direction Then flip the antenna up. Therefore, the air expansion of the buoyant body and the upright rotation of the antenna can be easily performed without interference.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of a buoy.

FIG. 2 is a partially cut front view of a buoy.

FIG. 3 is a partial cutaway side view of a buoy.

4A is a plan view of a cover, and FIG. 4B is a front view of the cover.

5 (a) is a view from AA in FIG. 3, (b) is a view from BB, and (c) is a view from CC.

FIGS. 6A and 6B are assembly views of the antenna mounting portion in the antenna housed state, wherein FIG. 6A is a longitudinal sectional view, FIG. 6B is a front view, and FIG.

7A is a side view, FIG. 7B is a front view, and FIG. 7C is a rear view.

FIG. 8 is a component diagram of the rotating shaft 9a.

FIG. 9 is a component diagram of the bearing 9c.

FIG. 10 is a component diagram of a coil spring 9k.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 target 2 upper target 3 lower target 4 support 5 recessed portion 6 cover 6a slit 8 buoyant body 8a broken line 9 antenna mounting portion 9a rotating shaft 9b bearing portion 9c bearing 9f concave groove 9g guide pin 9k spring 10 antenna

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yuji Aso 2-176, Toshima-minami, Ikeda-shi, Osaka Zenilight Buoy Co., Ltd. (72) Inventor Shuji Matsui 2-176, Toshima-minami, Ikeda-shi, Osaka 1 share (72) Inventor Tadahiro Arimura 2-176, Toshima-minami, Ikeda-shi, Osaka, Japan Zenilight Buoy Co., Ltd. JP, B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) B63B 22/00 B63B 22/12 B63C 9/20

Claims (2)

(57) [Claims] 1. A buoy specimen 1 is connected with an upper specimen 2 and a lower specimen 3 by a support 4, and a recess 5 is formed around the support 4, and a slit 6a is provided in a vertical direction and has elasticity. The cylindrical target 1 is covered with the cylindrical cover 6 to cover the recess 5, and the upper target 2
A central mounting portion of an air-filled annular buoyant body 8 provided with an air-supplying gas cylinder 7 on the lower surface is fixed, and the cylindrical cover 6 is folded like an umbrella so as to be wrapped around the column 4 in a state where the annular buoyant body is evacuated. And a rotating shaft 9a having a central axis located in a horizontal radial direction from the center of the target body, and an antenna in which the antenna device mounting portion 9 is fixed to the outer end, and an antenna in an upright upright position in a downwardly stored state. A bearing 9b having a means for rotating the rotating shaft up to the upright position and fixing the rotation of the rotating shaft at the upright position, and pushing out the antenna while rotating the rotating shaft from the downwardly stored state to the upright upright position. An antenna mounting portion 9 having a spring 9k biasing in the direction, the antenna mounting portion 9 is fixed to the upper outer surface of the upper specimen 2, and the upper half of the antenna is folded in front of the downward vertical position. Outer and cylindrical power of annular buoyant body Housed in a position to fit between the inner surface of the chromatography,
A buoy antenna device, wherein the direction in which the antenna is turned upright from the retracted state is opposite to the winding direction when the annular buoyant body is stored. 2. An antenna device for a dropped radio buoy according to claim 1, wherein the annular buoyant body is evacuated to a flat state,
From the center of the plane, the antenna is folded and wound in a umbrella-like shape around a support so as to form a plurality of bent lines at equal intervals radially from the center of the plane, and the antenna is turned downward and the upper half of the antenna is turned downward. Positioned before the vertical position, push the slit open against the urging force to close the cylindrical cover,
A method for storing a buoy antenna device, wherein the buoy antenna device is fitted and covered in a concave portion so as to cover an upper half portion of the antenna.