JPH071848Y2 - Radar device with open scanner unit - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention provides a radar antenna with a rotation indicator light to prevent accidents due to the rotation of the radar antenna at night, and to improve safety, open for small vessels. The present invention relates to a radar device equipped with a scanner unit.

[Conventional technology]

Conventionally, for example, in a radar device for a small boat, as shown in FIG. 3, a rotary shaft 2 having an antenna 1 attached thereto is rotatably supported by a bearing unit 3 having a built-in rotary joint connected to a radar transmitting / receiving unit (not shown). A scanner unit that rotates the antenna 1 in a constant cycle by rotating the rotating shaft 2 by the motor 5 via the main gear 4 is provided.

In the scanner unit of such a small ship radar device, the antenna 1 having a small length of about 60 cm is
Put the entire scanner unit in a circular radome 18,
The rotating mechanism is protected from wind and rain, and the rotating part is covered to prevent entanglement and entanglement of ropes. However, for a large antenna 1 having a length of more than 1 m, the circular radome 18 becomes too large, which causes many problems in terms of the strength of the radome or the cost. Therefore, the open type scanner unit in which the antenna 1 as shown in FIG. 4 is covered with a radome 17 to make a rotating antenna ANT and the other part of the scanner unit is housed in another waterproof case is often adopted. There is.

On the other hand, recently, even small boats such as fishing boats and leisure boats tend to be equipped with an open type scanner unit equipped with a large antenna 1 having a resolution higher than 1 m. The place is limited, and for example, in a cruiser, it may be directly mounted on the cabin. in this case,
Antenna part ANT which is antenna 1 covered with radome 17
If the occupant accidentally touches the antenna unit ANT, the antenna unit ANT is rotating, which may result in injury.

For this reason, conventionally, there has been a method in which both ends of the antenna unit ANT are colored so as to be easily identified, and the rotation of the antenna unit ANT is displayed to call attention.

[Problems to be solved by the device]

However, in the above, in the darkness of night,
It was difficult to confirm the rotation range of the antenna part, and there was a risk that the antenna part would approach without knowing the rotation of the antenna part.

Therefore, in this invention, it is an object to make the rotation of the antenna part visible even in the dark.

[Means for Solving the Problems]

In order to solve the above problems, in a radar device including an open type scanner unit having a structure in which a rotating part is exposed, a light emitting part is provided in the exposed rotating antenna part, and a generator is attached to the rotating shaft of the antenna part. The output is connected to the light emitting unit, a pinion gear is attached to the drive shaft of the generator, and a rolling surface centering on the rotating shaft is formed in the bearing unit that supports the antenna unit and the rotating shaft. The pinion gear of the generator is rotatably contacted with the moving surface.

The rolling includes not only rolling by meshing gears but also rolling by pinch rollers as in the embodiment.

[Action]

The radar device equipped with the open type scanner unit configured as described above operates the radar, and when the antenna part is rotated by the motor, the generator is also rotated together with the rotating shaft, and the drive shaft of the generator is rotated through the pinion gear. As a result, the rolling surface rolls and rotates, and electric power generated by the rotational force is supplied to the light emitting unit, and the light emitting unit emits light.

〔Example〕

Hereinafter, this embodiment will be described with reference to FIGS. 1 and 2.

In the open type scanner unit of the marine radar device shown in FIG. 1, the antenna 1 covered with the radome 17
The antenna part ANT and the rotary shaft 2 are rotatably supported by the bearing part 3, and the light emitting parts such as LEDs and light bulbs are attached to both ends of the radome 17 covering the antenna 1 to form the light emitting part 10. There is. The position where the light emitting unit 10 is provided does not have to be limited to both ends of the radome, but it is assumed that the light is not misidentified as a legal light defined by the Maritime Collision Prevention Law. A waveguide is provided inside the rotary shaft 2, a rotary joint (not shown) is built in the bearing 3, and the rotary joint is connected to a radar transmitter / receiver (not shown).

A main gear 4 is attached to the rotary shaft 2, and a pinion gear 11 of a motor 5 is meshed with the main gear 4.
When the motor 5 is activated, the antenna part ANT rotates together with the rotating shaft 2 via the gear 11 and the main gear 4.

A small motor 6 for power generation is fixed to the main gear 4,
The output is supplied to the light emitting unit 10 provided in the antenna unit ANT by the cable 16 installed along the rotation axis.
Therefore, even if the antenna section ANT rotates, power is supplied to the light emitting section 10 without twisting or entanglement of the cable 16, and the rotating light emitting section is supplied from an external fixed power source, for example, via a sliding contact. It is not necessary to consider wear of contacts, failure of contacts, generation of noise, etc. as in the case of supplying power to
Further, if the small motor 6 for power generation is a brushless motor (AC motor), the sliding contact of the motor itself is also eliminated, and maintenance by providing the light emitting unit 10 is not necessary.

A balance weight 15 is fixed to the main gear 4 on the opposite side of the small generator motor 6 to balance the small generator motor 6 and to make the inertia moment of the main gear 4 uniform. Therefore, the rotation of the bearing 3 can be accurately maintained and uneven wear of the bearing 3 is prevented.

A small box 6 for power generation has a gear box 7 attached thereto, and a drive shaft 7 ′ thereof has a pinion gear 8 for a generator attached thereto. The pinion gear 8 is meshed with the fixed gear 12 of the bearing portion 3, and the fixed gear 12 has a tooth surface centered on the rotary shaft 2 so that the small power generating motor 6 rotates together with the rotary shaft 2. Then, the pinion gear 8
Rotates while meshing with the tooth surface of the fixed gear 12 of the bearing portion 3, and the rotational force generates electric power.

This embodiment is configured as described above. Now, when the radar is operated and the motor 5 is started, the antenna unit AN
The T starts to rotate, and at the same time, electric power is output from the small motor 6 for power generation, and the light emitting unit 10 lights up while the antenna unit ANT is rotating. Therefore, the antenna part ANT is used even at night.
The rotation range of can be displayed. At this time, if the rotation of the antenna part ANT stops for some reason, the small motor 6 for power generation
Output is stopped and the light emitting unit 10 is turned off. That is,
Since the light emitting unit 10 lights up in association with the rotation of the antenna unit ANT, it also functions as a rotation detector for detecting a failure of the radar.

In the embodiment, if the fixed gear 12 has toothless teeth at regular intervals, the pinion gear 8 rotates intermittently and the light emitting unit 10
Blinking can be displayed.

Further, the pinion gear 8 is replaced by a pinch roller made of rubber or the like, and the main gear 4 is replaced by a disc-shaped body having no teeth.
The pinch roller can be pressed into contact with the side surface of the disc-shaped body as a rolling surface for rolling.

Further, as shown in FIG. 2, a small motor 6 for power generation is attached below the main gear 4 and a gear 12 'meshing with the pinion gear 8 is provided above the bearing 3 so that the pinion gear 8 rolls. Good. Further, similarly to the above, the pinion gear 8 may be a pinch roller and the upper surface of the bearing portion 3 may be a rolling surface.

〔effect〕

Since the present invention is configured as described above, the rotation range of the antenna section can be recognized even at night, and the crew of the ship can be alerted.

In addition, a special power supply mechanism such as a contact with the outside is not required for lighting the light emitting portion.

It can also be used as a rotation detector for radar.

[Brief description of drawings]

1 and 2 show an embodiment of a radar device including an open type scanner unit according to the present invention.
FIG. 1 is a schematic front view of an internal cross section, FIG. 2 is a schematic front view of an internal cross section of another embodiment, FIGS. 3 to 4 show a radar apparatus of a conventional example, and FIG. 3 is a circular radome type conventional example. FIG. 4 is a schematic front view of an internal cross section, and FIG. 4 is a schematic front view of an internal cross section of a conventional example of a radar device including an open type scanner unit. 1 ... Antenna, 2 ... Rotation axis, 3 ... Bearing section, 5 ...
… Motor, 6 …… Small motor for power generation, 7 ′ …… Drive shaft,
8 ... Pinion gear, 12 ... Fixed gear, 17 ... Radome, ANT ... Antenna section, 10 ... Light emitting section.

Claims (1)

[Scope of utility model registration request] 1. A radar device including an open type scanner unit having a structure in which a rotating part is exposed, wherein a light emitting part is provided on an exposed rotating antenna part, and a generator is attached to a rotating shaft of the antenna part. The output is connected to the light emitting part, a pinion gear is attached to the drive shaft of the generator, and a rolling surface centering on the rotation axis of the antenna part is formed in the bearing part supporting the antenna part and the rotation shaft. A radar device comprising an open type scanner unit, wherein a pinion gear of the generator is rotatably contacted with a moving surface.