JPH07240626A - Expanded paraboloidal antenna - Google Patents

Abstract

PURPOSE:To eliminate the need of a lock mechanism at the time of storage and at the time of expansion. CONSTITUTION:A flat reflection surface is divided into a rotation side reflection surface 1 and a fixed side reflection surface 11, and hinges 6 and 7 are connected to the respective reflection surfaces in a division part. A handle 5 is pin-connected to the hinges 6 and 7, and reflection mirrors divided at the time of the expansion are fixed each other by a lock bolt 10. Also, after the lock bolt 10 is removed and the storage is performed by the operation of the handle 5, the reflection surfaces divided at the time of the storage are fixed by the lock bolt 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deployable parabolic antenna for satellite communication, and more particularly to a storage / deployment mechanism for a reflecting mirror division.

[0002]

2. Description of the Related Art A conventional retracting and retracting mechanism for a reflecting mirror will be described with reference to the drawings.

FIG. 6 shows an overall view of a reflection surface of a conventional three-division deployment type parabolic antenna.

In this figure, two rotary side reflecting surfaces 1 and a fixed side reflecting surface 11 are divided by a dividing section 3 and stored / stored.
It has a configuration that can be deployed.

In the figure, reference numeral 21 denotes a storage / expansion mechanism for retracting / expanding the reflecting mirror, which has four storage / expansion mechanisms 21 of the same structure on the dividing portion 3.

FIG. 7 is a detailed view of the storage / expansion mechanism 21, showing a state at the time of expansion. Hinge 24 and hinge 2
Reference numeral 5 is coupled to the rotating side reflecting surface 1 and the fixed side reflecting surface 11, respectively. Further, the hinge 24 and the hinge 25 are connected by a reflecting mirror rotation shaft 26, and have a structure rotatable about the main rotation shaft 26. Further, the board 24 and the board 25 are connected to the hinge 24 and the hinge 25, respectively.

FIG. 8 is a detailed view of the storage / expansion mechanism 21 on the stairway during storage.

By pushing the board 24 and the board 25 open in the direction of the arrow, the reflecting mirror rotating shaft 26 is centered.
It is shown that the rotating side reflecting surface 1 and the fixed side reflecting surface 11 are divided.

FIG. 9 is a view showing a detailed view of the storage / expansion mechanism 21 when it is stored. In this state, the board 24 and the board 25 are pushed open to the same horizontal direction with respect to the reflecting mirror rotation shaft 26, and are fixed at that position.

FIG. 10 is a top view of the conventional reflecting mirror when it is stored. As shown in FIG. 9, the two retracting and deploying mechanisms 21 have the reflecting mirror rotation axis 26 as the center,
It is shown that the two rotation axis reflecting surfaces 1 and the fixed example reflecting surface 11 are stored in a state of being divided into three.

The storage fixing bracket 27 is provided on the left and right sides so as to fix the rotary shaft reflecting surface 1 and the fixing example reflecting surface 11 at the time of storing.
The board 24 and the two boards 24 can be fixed to each other by a lock bolt.

FIG. 11 is a top view of the conventional reflecting mirror when it is developed. Even in this state, in order to stop the rotation function of the storage / expansion mechanism 21, the expansion fixing metal piece 28 having the same shape as the storage fixing metal piece 27 has a structure for connecting the two left and right boards 24.

[0013]

[Problems to be Solved by the Invention]
The unfolding mechanism has a problem that a special fixing metal fitting is required because the split reflecting mirror stops moving during storage and unfolding. In particular, a reflector having a splitting mechanism is often used for a portable antenna, and since the fixing metal fittings increase the weight and are difficult to mount, there is a problem that storage and deployment cannot be done in a short time. there were.

[0014]

A retractable / expandable mechanism of a deployable parabolic antenna according to the present invention has a hinge in a split portion of a plate-shaped split reflector whose surface accuracy can be easily reproduced. It has a metal fitting with a handle equipped with a lock mechanism when it is stored.

[0015]

The present invention will be described below with reference to the drawings.

FIG. 1 is an overall view of a development type parabolic antenna reflecting surface showing an embodiment of the present invention. Detailed description of the same reference numerals as those of the conventional art will be omitted. The reflecting surface is divided by the dividing portion 3 into the fixed-side reflecting surface 11 and the rotating-side reflecting surface 1, and the dividing portion 3 has a storage / deployment mechanism 2.

FIG. 2 is a top view of the deployable parabolic antenna showing one embodiment of the present invention. In this figure, the state where the rotation-side reflecting surface 1 is rotated in the direction of the arrow around the reflecting mirror rotation axis 4 and is stored is shown by a one-dot chain line.

FIG. 3 is a detailed view of the retractable / deployable mechanism 2 of the deployable parabolic antenna of the present invention, showing a state of the deployable parabolic antenna at the time of deployment. The hinge 6 and the hinge 7 are coupled to the fixed-side reflecting surface 11 and the rotating-side reflecting surface 1 via brackets 12 and 13, respectively. In addition, the pin 14 is provided at the tip of the hinge 6.
The metal fitting 8 is joined at. Similarly, the metal fitting 9 is also connected to the tip of the hinge 7 by the pin 15.

Further, the metal fittings 8 and 9 are connected to the handle 5 by a pin 16. As a result, handle 5
The metal fittings 8 and 9 can be freely moved by operating.

The handle 5 has a lock bolt 10
Is attached. By connecting the lock bolt 10 to the handle fixing nut 17 attached to the rotating side reflection surface 1, the movable functions of the hinge 6 and the hinge 7 can be completely stopped and locked.

FIG. 4 is a diagram showing the details of the stairway on the way of storage of the storage / deployment mechanism 2 of the present invention. In this figure, the lock bolt 10 is removed from the handle fixing nut 17 from the unfolded state of FIG. 3, and the handle 5 is rotated clockwise,
Further, the state is shown in the case of operating in the direction of the reflecting mirror rotation axis 4.

As a result, the hinges 6 and 7 are pushed and opened. The direction of the arrow shown in the figure indicates the operating direction of the handle 5.

FIG. 5 is a diagram showing the details of the storage / expansion mechanism 2 of the present invention during storage. In this figure, the handle 5
The operation of is stopped with the handle 5 being pushed open until the metal fittings 8 and 9 are completely aligned. Although it is stored in this state, the lock bolt 10 attached to the handle 5 described above is completely connected to the nut portion provided on the metal fitting 9 to completely stop the movement of the hinge 6 and the hinge 7. You can do it.

Because of this structure, the metal fittings 8 and 9
By adjusting the lengths of and, it is possible to freely select the bending angle from the fixed-side reflecting surface 11 to the rotating-side reflecting surface 1 during storage.

In the present embodiment, the expansion type parabolic antenna divided into three parts has been described.
The expansion mechanism is not limited to three divisions, and can be applied to a multi-division expansion antenna.

[0026]

As described above, according to the present invention, in the retractable / expandable mechanism of the deployable parabolic antenna, there is provided a handle-equipped metal fitting having a hinge in the reflecting mirror dividing portion and having a lock mechanism both during deploying and storing. By having it, it is possible to easily expand and store it without deteriorating the high surface accuracy. In addition, since the lock mechanism is shared both at the time of unfolding and at the time of storage, there is no need for special fixing metal fittings, and the overall weight can be reduced and the operability can be improved.

[Brief description of drawings]

FIG. 1 is an overall view of a development type parabolic antenna reflecting surface embodying the present invention.

FIG. 2 is a top view of an anti-slope surface of a deployable parabolic antenna embodying the present invention.

FIG. 3 is a detailed view of a storage / deployment mechanism (when deployed) of the deployable parabolic antenna embodying the present invention.

FIG. 4 is a detailed view of a storage / deployment mechanism (during storage) of the deployable parabolic antenna according to the present invention.

FIG. 5 is a detailed view of a storage / deployment mechanism (when stored) of the deployable parabolic antenna according to the present invention.

FIG. 6 is an overall view of a conventional deployable parabolic antenna reflecting surface.

FIG. 7 is a detailed view of a conventional retractable parabolic antenna reflecting surface retracting and deploying mechanism (when deployed).

FIG. 8 is a detailed diagram of a conventional retractable parabolic antenna reflecting surface retracting / expanding mechanism (during storage).

FIG. 9 is a detailed diagram of a conventional retractable parabolic antenna reflecting surface retracting / expanding mechanism (when retracted).

FIG. 10 is a top view of the conventional deployable parabolic antenna reflecting surface when stored.

FIG. 11 is a top view of a conventional deployable parabolic antenna reflecting surface when it is deployed.

[Explanation of symbols]

 1 Rotating side reflecting surface 2 Storage / expanding mechanism 3 Dividing part 4 Reflecting mirror rotating part 5 Handle 6 Hinge 7 Hinge 8 Metal fitting A 9 Metal fitting B 10 Lock bolt 11 Fixed side reflecting surface 12, 13 Bracket 14, 15, 16 pin 17 Handle Fixing nut 21 Storing and deploying mechanism 22,23 Hinge 24,25 Board 26 Reflector rotating shaft 27 Fixing metal fitting for storage 28 Fixing metal fitting for expansion

Claims (3)

[Claims] 1. An expandable parabolic antenna, comprising: a split reflecting mirror obtained by dividing one reflecting mirror into a plurality of pieces; and a plurality of hinge mechanisms attached to the dividing portions of the split reflecting mirror so that the split reflecting mirror can be rotated. A deployment type parabolic antenna comprising: a metal fitting with a handle attached to the hinge mechanism; and a lock bolt attached to the metal fitting with the handle for fixing the split reflecting mirror during deployment and storage. 2. A metal fitting with a handle according to claim 1,
The hinge mechanism is an expandable parabolic antenna characterized in that it is coupled by linear first and second metal fittings through a pin that can freely rotate. 3. The lock bolt according to claim 1, when the split reflecting mirror is unfolded, the lock bolt is combined with the split reflecting mirror, and when the split reflecting mirror is stored, the first or second lock bolt is installed. A deployable parabolic antenna characterized by being combined with metal fittings.