JP2939761B2 - Scanner for sonar - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a scanner device for a sonar.

[Related Art] This type of scanner device detects a reflecting object such as a school of fish while performing scanning in which a transducer is rotated in a horizontal direction and an elevation angle direction in order to form a sound wave beam in water. In addition, this type of scanner device is generally provided with a transmitter / receiver accommodating portion which is formed in a water-tight manner, is filled with insulating oil and accommodates the transmitter / receiver, and a water-tight upper portion is provided below.
In addition, a control system accommodating portion for accommodating a control system for the rotation and the like formed in an air chamber shape is provided. Further, in this type of scanner device, a partition bearing portion having a shaft bearing for the rotation is formed in a watertight partition between the transducer housing portion and the control system housing portion.

FIG. 22 and FIG. 23 (in the figures, arranged so that the direction of arrow A points upward) are conventional main part configuration diagrams. A transducer 101 mainly composed of a vibrator 100 arranged in the transducer housing part is supported by a shaft 102 provided on the front ends of support shafts 103 and 104 which are ring-connected on both sides to a holding frame 105 by pins 116. The directivity direction (arrow D ₁ ) of the vibrator 100 is
By rotating the gear 111a meshing with the gear 105a fixed above 05 by the left / right drive motor 111, the gear 111a is driven to rotate in the left / right direction (arrow F ₂ ) rotating in the horizontal plane. Further, the amount of power generated by rotating the generator 113 by the gear 113a meshed with the gear 105a is used to detect the amount of rotation in the left-right direction to perform left-right rotation control.
2, a gear 126 that meshes with the gear 117 is provided via an intermediate drive mechanism including a gear 123, a universal joint 120, and a gear 117 supported by bearings 119 and 122, and
A gear 115 provided at the center of the shaft 106 supported by the holding frame 105 is driven by a rack 114a below the rack shaft 114 passing through the center of the holding frame 105.

Further, the rack 114b on the control system accommodation section side of the rack shaft 114
Is driven up and down by a gear 125 rotated by an elevation angle motor 131, so that the directional direction of the vibrator 100 (arrow D)
₁ ) is driven to rotate in the elevation angle direction (arrow F ₁ ) in the vertical plane. The amount of rotation in the elevation angle direction is
Rotation control in the elevation angle direction is performed by detecting with a potentiometer 130 connected to the axis of the
A scanner device designed to fix and rotate the support 131a of the 131 and the support 130a of the potentiometer 130 on the control system housing portion side of the gear 105a contributing to the rotation in the left-right direction is disclosed in -66869.

In addition, by improving some of these scanner devices,
As shown, a fulcrum 144a is provided on the side of the transducer 140 at a position shifted from the fulcrum 142 of the holding frame 141 that supports the side of the transducer 140.
Is provided separately, and the transducer 140 is held by a link mechanism including two fulcrums 142, 144a and two holding frames 141, 144, and is provided above a slide shaft 143 for vertically moving the holding frame 144. Gear 146
By rotating the gear 147 meshed with the gear 146 by the elevation angle motor 148, the
Is configured to rotate the pointing direction (arrow D ₂ ) in the elevation angle direction (arrow F ₁ ).

In addition, the rotation in the left-right direction (arrow F ₂ ) is
As in the case of FIG. 23, a gear 149 having a shaft 145 fixed to the holding frame 141 through which the slide shaft 143 is passed through,
The gear 150 meshed with the gear 149 is
It is configured to be performed by 151.

Furthermore, when a fishing boat or the like equipped with a scanner device is tilted due to rocking due to waves, etc., the tilt device used to correct the deviation of the pointing direction of the transducer due to tilting of the scanner device is changed to a semilunar pendulum. A scanner device having a configuration in which an inclination sensor 152 for detecting an inclination amount and detecting an inclination amount by 152c is mounted on the back side of the transducer 140 is disclosed in Japanese Utility Model Application Laid-Open No. 61-28.
No. 080, for example.

[Problem to be Solved by the Invention] Since the above-described scanner device is used by projecting into water, it is necessary to make the watertight structure of the transmitter / receiver housing section and the control meter housing strict, and to perform transmission / reception. The insulating liquid filled in the wave accommodating portion plays an important role in preventing transmission / reception of sound waves from forming a reflection loss layer between external water and an external body serving as a container.

Furthermore, since it is affected by waves and is subjected to impact pressure, a partition bearing provided in the middle is provided to prevent the insulating liquid filled in the transmitter / receiver housing from leaking to the control system housing. Therefore, the watertight structure of the rotating shaft must be strict.

However, in the conventional configuration as described above, FIG.
As can be understood from the figure, since it is necessary to provide a considerable number of drive shafts for each rotation and detection shafts for detection in the partition bearing portion between the transducer housing portion and the control system housing portion,
There is a disadvantage that the configuration becomes complicated and expensive, and the number of accidents of damage to the watertight structure due to rotational wear increases.

In addition, since it is used by projecting into the water, it is desirable to make the outer diameter of the scanner itself as small as possible so as to reduce the water flow resistance, but there is a limit in the arrangement of the drive shaft and the detection shaft, and it is not possible to make it thinner to a certain extent. There is an inconvenience. For this reason, there is a problem that it is desired to provide a simple and inexpensive scanner device that eliminates these disadvantages.

Means for Solving the Problems The present invention is directed to a sonar for detecting a reflecting object such as a school of fish while performing scanning for rotating a transducer for forming a sound wave beam in water in the left-right direction and the elevation angle direction. The lower part of the scanner device is provided with a transducer housing part which is formed in a watertight manner, is filled with insulating oil, and accommodates the transducer, and the upper part is watertight and in the form of an air chamber. A control system accommodating section accommodating the formed control system for rotation and the like is provided, and a watertight partition is provided between the transducer housing section and the control system accommodating section, and for the rotation. A sonar scanner device having a partition bearing portion having a shaft bearing, wherein a holding frame for the transducer is provided below and a shaft for rotating in the left-right direction is formed by a cylindrical tube shaft. With the bearing of the partition bearing part Partition bearing portion forming means for forming only the bearing for the cylindrical shaft, and a motor for driving the rotation in the left-right direction are disposed in the control system housing portion, and a motor for driving the rotation in the elevation angle direction. A drive motor arranging means arranged in the transducer housing part, and an electric wire introducing means for guiding an electric wire connecting between the control system housing part and the transducer housing part through the cylindrical shaft in a watertight manner. It is characterized by having. With this feature, the above problem can be solved.

Embodiment An embodiment will be described below with reference to FIGS. 1 to 21. 1 and 2 are used with the arrow A directed upward, the arrow A side is referred to as the upper side or the tip side, and the side opposite to the arrow A is referred to as the lower side or the lower end side.

The scanner device 1 is provided with a transmitter / receiver accommodating portion 100A that accommodates the transmitter / receiver 5 and the like while being watertightly protected by a cylindrical dome 2 having a hemispherical cap-shaped closed end portion, and is provided continuously above it. As will be described later, the control system includes a control system housing unit 100B in which a control system such as a control circuit is housed in an air chamber formed in a watertight manner.

The dome 2 is formed of a material having a low sound transmission loss, for example, a synthetic resin, and is formed in the inside of the dome 2 in a cylindrical shape by hollowing out the center as shown in FIG. The transducer 5 is rotatably held about shafts 4a and 4b provided at both open ends of a U-shaped holding frame 3 designed to be rotated by the formed cylindrical shaft 26. As shown in the figure, the center is hollowed out and rotated by a cylindrical shaft 26 formed in a cylindrical shape.

Inside the dome 2, a liquid 2a, for example, silicone oil
Filling with castor oil also serves to insulate the internal electric elements, lubricate the mechanical rotating parts, and match the transmission and reception of the transmitted and received waves between the inside and the outside of the dome 2.

One shaft 4a has a gear 6 fixed to the holding frame 3 by screws.
Are rotatably held by a center hole of the antenna and fixed to a holding plate 8 of the transducer 5.

Further, the periphery of the gear 6 is arranged around a motor assembly 22 described later.
The transmission / reception device 5 rotates in the elevation angle direction by rotating in a planetary gear shape while the gears 6 mesh with each other.

Using a piezoelectric disk-shaped vibrator 7, for example, a 180 kHz PZT element, a reflective material
For example, after the cork plate is adhered, the peripheral edge is held by the hook 8A and fixed to the holding plate 8 by the screw 5a.

The terminal plate 9 provided at the center of the holding frame 3 is used to connect electric wires (not shown) from each electric circuit of the transducer housing 100A to the cylindrical shaft 26.
The wires are used for relaying to lead to the slip ring assembly 25 through the inside, and each electric wire is watertightly sealed above the terminal plate 9.

The rotation regulating plate 10 integral with the other shaft 4b is indicated by an arrow D in FIG.
The magnet 10 and the Hall element described later contribute to the rotation regulation in the direction, and a magnetic conductive material, for example, a peripheral edge 10a of a disk made of an iron material is cut out over a required angle range, for example, 120 °, and one end 10b of a cutout 10B. Then, the rotation of the transducer 5 in the elevation angle direction is restricted.

The retaining ring 24c is a C-shaped ring, and eliminates the axial play of the shaft 4b with respect to the holding frame 3 so that the magnet 12
-Positioning and fixing to the space between the Hall elements 14 are performed.
Further, the rotation restricting plate 10 is fixed to the holding plate 8 and rotates integrally with the transducer 5.

4 to 6 show the details of the detection assembly 21 for detecting both ends of the notch 10B, that is, the regulating end. The detection assembly 21 is composed of a magnet holder 11 having a magnet 12 embedded at an end thereof, and a mounting element 13 having a Hall element 14 such as a Hall IC disposed at an end facing the magnet 12 by screws 11a and screws 15. A magnetic field is formed in a gap between the magnet 12 and the Hall element 14.

Further, the rotation restricting plate 10 is provided with a projection 10c, and the holding frame 3 has a portion corresponding to the projection 10c in a required rotation angle range, for example, both ends 3c of a portion where a range of 200 ° is cut out.
Is provided to prevent the electric wave guided to the transducer 5 from being twisted by excessive rotation of the transducer 5 in each of the elevation directions.

The lead wire 17 of the Hall element 14 is drawn out of the slot 16 of the mounting seat 13 to the outside, and the lead wire 17 is fixed to the slot 16 with an adhesive to protect the lead wire 17 from vibration.

Then, the detection assembly 21 is screwed to the inside of the holding frame 3 by a screw hole 13 a provided in the mounting seat 13, and fixed so as to correspond to the rotation restricting plate 10.

Next, FIGS. 7 to 9 show a motor assembly 22 for rotating the transducer 5 in each of the upward and downward directions.

In these figures, a gear 30 is fixed to a shaft of the stepping motor 20.

The gear 30 is meshed and transmitted in the order of the rotating gear 31 and the gear 32 to reduce the driving speed of the stepping motor 20.

The motor assembly 22 is screwed and fixed to the holding plate 8 by the mounting hole 22a, and is positioned so that the gear 32 meshes with the gear 6 to which the holding frame 3 is fixed.

The regulation output regarding the detection output of the detection assembly 21, the drive input of the stepping motor 20, and the setting of the directivity of the transducer 5 in the elevation angle direction will be described later in the section “Control operation of the embodiment”.

As shown in FIG. 2, the holding frame 3 is provided with a flange-like portion 24 on the upper side, and is fixed to the flange-like portion 24 at the lower end of the cylindrical shaft 26 of the slip ring assembly 25 with screws 24a.

The partition bearing portion 70 is a bearing seat made of metal, for example, bronze, and a partition wall portion 78 that water-tightly separates the transducer housing portion 100A and the control circuit housing portion 100B, and a lower side of the cylindrical shaft 26. Bearing part
71, an assembling screw part 74 provided with an O-ring packing 73 for holding the holding portion 26b of the dome 2 in a water-tight manner and an O-ring packing 73 for holding the upper side of the V-packing 72b in a water-tight manner;
The control circuit housing portion 100B includes a mounting flange portion 77 provided with an O-ring packing 76 for holding the protection cylinder 75 in a watertight manner.

The dome 2 is assembled with the partition bearing 70 by inserting the insulating liquid 2a into the inside and then screwing the mounting screw 74. The protective cylinder 75 is partitioned by the screw 77a with the air inside. It is assembled to the bearing unit 70.

At the upper end of the lower holding portion 26b of the cylindrical shaft 26 of the slip ring assembly 25, a thrust bearing 33a, for example, a bearing in which resin plates impregnated with lubricating oil are interposed is used to fix the gear 33 by screws. The cylindrical shaft 26 is rotated by the gear 34a of the stepping motor 34 that meshes with the gear 33, and the transducer 5 rotates in the left-right direction.

In addition, the electric wire from the transmitter / receiver accommodating portion 100A is held watertight on the lower side 9a in the cylindrical shaft 26 by a watertight filling adhesive, for example, a silicone rubber filling adhesive.

In the upper part of the gear 33, a slip ring assembly 25 is fitted to a cylindrical shaft 26, and the slip ring assembly 25 is provided with holding rings provided at both upper and lower ends as shown in FIGS. A conductor ring 41 is arranged between and 28 and 29, and an insulating ring 41a is arranged on both sides.

Lead wires 40 are soldered to the inner peripheral surface of the conductor ring 41 as shown in FIG. 13, and all the lead wires 40 are guided through the holding ring 28 at the upper end to the printed board 85 described later, and the cylindrical shaft It is half connected to the electric wire from the transmitter / receiver accommodating section 100A which is guided through the inside 26.

To fix the slip ring assembly 25 to the cylinder shaft 26, a stepped portion 26a is provided on the cylinder shaft 26, the position in the vertical direction is determined, and the screws 28a, 29a are tightened and fixed from the sides of the holding rings 28, 29. .

The reference direction detection head 90A is composed of a turning head of a magnet piece 43 adhesively fixed to the tip of a hexagonal stud bolt 41b screwed and fixed to a screw 44 from the side of the holding ring 28 on the upper end side of the slip ring assembly 25. Hall element 90 provided on the printed wiring board 53 of the contact assembly 45
a of the detection head.

Then, when the directional direction of the transducer 5 passes through the reference direction in the left-right rotation, a detection signal is obtained, and the left-right rotation is regulated by the detection signal.

Note that the regulation output regarding the detection output by the Hall element 90a, the drive input of the stepping motor 34, and the setting of the transmitter / receiver 5 in the left-right direction will be described later in the section “Control operation of embodiment”.

Contact assembly 45 is a slip ring assembly
Mainly a group of conductive contacts for contacting the 25 conductor rings 41 to guide an electric signal, as shown in FIGS. 14 to 16, a leaf bent in a U-shape on a printed wiring board 53. Conductive spring contacts with contacts 49, 49 caulked and fixed to both open / close ends of the spring 46 are assembled at the positions corresponding to in FIG. 11, and at the top position corresponding to the magnet 43 in FIG. The Hall element 90a is fixed.

The circuit section mounting seat 60A is mainly composed of the contact assembly 45,
It is a seat for mounting and holding a printed wiring board 52 of a control electronic circuit, a stepping motor 34 for rotation in the left-right direction, and a tilt sensor 23 described later, and a lower seat 60 and an upper seat 61 on a donut-shaped disk. As shown in FIG. 17, the columns 50 and 51 are arranged at intervals and fixed by screws, so that the scaffolds are fixed to the upper end surface of the partition bearing 70 by screws 60a.

A gear 34a is provided around the shaft of the stepping motor 34, and the gear 34a is passed through a hole 60b at an eccentric position
The stepping motor 34 is fixedly screwed to the lower seat 60.

As shown in FIG. 17, a printed wiring board 53 of a contact assembly 45 and a printed wiring board 52 of a control electronic circuit are fixed to the three columns 50 from the side by screws. Necessary circuits 52 and 53 are connected by electric wires (not shown), and required printed circuit elements are arranged on the printed wiring board 52.

The electric wire (not shown) of the stepping motor 34 is connected to the printed wiring board 52.

An upper bearing 84 is press-fitted and fixed to the center hole of the upper seat 61,
An upper bearing 84 rotatably holds a body of a flanged body 83 fixed to the upper end side of the cylindrical shaft 26 by screws from the side.

On the upper side of the torso flange 83, as shown in FIGS. 19 to 21, a printed wiring board 85 for relay and tilt angle sensor is fixed by screws 62 with interposed columns 86 interposed therebetween,
Further, by fixing the outer cylinder 23a of the tilt movable portion of the tilt angle sensor 23 with the screw 53b with the spacer 53a interposed above the printed wiring board 85, the pendulum spring of the tilt angle sensor 23 is fixed.
The surface 55 is assembled so as to be at the same position as the center of the cylindrical shaft 26.

The tilt movable portion of the tilt angle sensor 23 is formed by inserting a magnet 57 adhered and fixed to the lower end of a pendulum spring 55 fixed to the lid 54 with a screw 56 from above the outer cylinder 23a. After being assembled in a watertight manner with the screw formed on the outer cylinder 23a, the screw case 60
The inside of 50 is filled with a liquid 58 having a relatively high viscosity, for example, silicone oil, and sealed with screws 61.

The detection element is formed by a Hall element 59, for example, a Hall IC, which is disposed opposite to the lower side of the magnet 57 in the hollow portion 53d inside the spacer 53a below the outer cylinder 23a, and is formed of the outer cylinder 23a. The bottom 53c has a small thickness and is made of a non-magnetic material.

Also, since the detection element is arranged close to the bottom of the magnet 57, the spring 55 formed of a thin leaf spring and the magnet 55
57 is configured such that an output obtained by detecting a change in a magnetic field caused by a tilting movement in a pendulum shape due to the tilt of the entire apparatus by the Hall element 59 is obtained as a tilt angle detection signal.

The output of the Hall element 59 of the tilt angle sensor 23 is guided to the printed wiring board 52 via the lead wire of the slip ring assembly 25 connected to the printed wiring board 85.

The stepping motor 20 and the stepping motor 34 are brushless type pulse motors, and include a magnetized rotor and a stator provided with a field coil for rotation, and provide a required pulse signal to the field coil. Thus, the rotor rotates in accordance with the polarity change and quantity of the pulse signal, and there is no sliding friction portion such as a brush.

The protection cylinder 75 is made of stainless steel, and is formed in an open shape with its periphery protruding in a flange shape, and is formed in a cylindrical shape in which an upper side is provided with an introduction hole for a cable 96.

In the introduction hole of the cable 96, a gland packing device 95 for fixing and holding the cable 96 in a watertight manner is provided,
A holding cylinder 90 for holding the entire apparatus is provided on the upper end surface.
A flange 91 provided at the lower end of the holding cylinder 90 is watertightly fixed by an O-ring packing 93 and a screw 92.

A stepped portion is provided outside the upper end of the protection cylinder 75, and the upper side of the protection outer body 97 made of a resin material is fixed from the side with screws 97a so as to cover the protection cylinder 75. .

The protective outer body 97 is formed by dividing the outer circumference of the protective cylinder 75 into six and forming a vertical boat shape, and the lower side is formed with a pin-like portion protruding from the lower end side of each protective outer body 97 to form the protective cylinder 75. It is inserted into a hole 75b provided in the lower flange-like portion 75a and is latched.

[Control Operation of Embodiment] Hereinafter, a control operation for causing the transducer 5 to perform scanning in the above embodiment will be described.

The rotation of the transducer 5 in the left-right direction is controlled by a command signal from a control display device (not shown) provided to required circuit elements of the printed wiring board 52 via the cable 96, and the rotation in the elevation angle direction is controlled. Is controlled so that the detection signal of the inclination angle sensor 23 is supplied to the printed wiring board 52 to correct the inclination angle.

When the operation power of the device is turned on, at the beginning of operation,
The command signal is such that the stepping motor 20 and the stepping motor 34 continue to rotate in a predetermined direction. For example, the cylinder shaft 26 rotates clockwise. Also, axis 4
a and 4b are controlled so that the directivity direction (arrow D in FIG. 3) of the transducer 5 rotates vertically downward.

When a detection signal is obtained from the Hall element 90a at a point where the cylinder shaft 26 rotates and crosses the reference direction detection head 90b, the rotation input to the stepping motor 34 is interrupted at that point, and the cylinder shaft 26 stops once. Then, the direction at that time is set as a reference direction, for example, the bow direction of the fishing boat, and regulation control is performed so that the starting point is determined, and a determination signal thereof, for example, the Hall element 90a
Is sent to the control display device side.

Thereafter, the direction control is performed by the stepping motor 34
Is rotated by a required amount, and a control operation only given from the control display device side is performed by a pulse signal of a polarity and a quantity necessary for turning the transducer 5 in a required direction in the left-right rotation direction.

On the other hand, when the shafts 4a and 4b rotate and the detection output is obtained from the Hall element 14 at the point where the end 10b of the notch of the rotation regulating plate 10 crosses the Hall element 14, the stepping motor
The rotation input to 20 is cut off.

Then, once the shafts 4a and 4b are stopped, the directing direction (arrow D in FIG. 3) of the transducer 5 is directed vertically downward, and regulation control is performed so that the starting point is determined. For example, in the same manner as the control in the stepping motor 34, the following control is performed with the direction of the reference signal as the reference direction, and the pulse signal of the necessary polarity and quantity is stepped so that the transducer 5 is oriented in the required direction in the rotation in the elevation angle direction. A control operation only to be given to the motor 20 is performed.

In a fishing boat to which the scanner device 1 is attached, for example, the fishing device is shaken by waves, and when the scanner device 1 is inclined,
The tilt angle sensor 23 performs a correction control for providing the stepping motor 20 with pulse signals of the polarity and the amount of the amount for correcting the detected tilt amount.

When the control pulse signal from the control display device and the corrected control pulse signal based on the detection of the amount of tilt of the tilt angle sensor 23 are given at the same time, the corrected pulse signal is provided by an electronic circuit provided on the printed wiring board 52. Is supplied to the stepping motor.

The signal obtained from the tilt angle sensor 23 is a level signal of a DC value, but is controlled by an electronic circuit provided on the printed wiring board 52.
It is converted into a pulse signal by the conversion.

Further, the inclination angle sensor 23 is connected to the transducer 5 by the cylindrical shaft 26.
Is rotated in the same direction as the pointing direction in the left-right rotation, only the tilt component in the pointing direction of the transducer 5 in the tilt amount of the scanner device 1 is detected, and correction control is performed.

On the other hand, in the regulation control of the starting point of the transducer 5 in the horizontal direction and the elevation angle direction, each direction is rotated by each pulse signal given thereafter, and the detection signal from the Hall element 90a or the Hall element 14 is obtained. When the signal is issued, the signal is operated to correct the state of the control command circuit on the control display device side to the state of each starting point.

The transmission signal and the reception signal of the transmitter / receiver 5 are guided to the transmission / reception circuit side provided on the control display device side via the printed wiring board 52 and the cable 96, and the required transmission / reception is performed by the transmission / reception circuit. Wave control is performed. Further, the rotation of the transducer 5 in each elevation direction is controlled by selecting between the direction in which the directional direction (arrow D in FIG. 3) of the transducer 5 is directed vertically downward and the direction in which the elevation angle is about 10 °. You.

[Modifications] (1) By using the transducer 7 of the transducer 5 as a plurality of elements and changing the phase of a signal obtained when each element receives a signal, a predetermined range, for example, about 30 °, is electronically changed. It shall be obtained by scanning.

(2) A signal given from the control display device side to the control of the stepping motors 20 and 34 is set as a predetermined DC value level signal, and AD converted by an electronic circuit provided on the printed wiring board 52 to be converted into a predetermined pulse signal. I do.

(3) A transmission / reception control circuit for the transducer 7 of the transducer 5 or the transducer 7 described in (1) is provided on the printed wiring board 52.

(4) The detection of the starting point by the Hall element 14 and the rotation restricting plate 10 is performed by detecting the point where the directional direction (arrow D in FIG. 3) of the transducer 5 is directed in the horizontal direction.

(5) The detection by the Hall element 14 and the rotation restricting plate 10 is used for the upper and lower limits of the directivity direction of the transducer 5, or the detection by the Hall element 90a and the magnet piece 43 is made in the opposite direction to the forward direction. As a result, the end point or the opposite point is detected in addition to the start point, and the regulation control is performed.

(6) The part that seals the conductor leading to the inside of the cylindrical shaft 26 in a watertight manner
A gland packing is provided or a structure intervening a waterproof penetration end is arranged below or above the cylindrical shaft 26.

(7) A structure is provided in which a hole is provided at a position corresponding to the slip ring assembly 25 of the cylindrical shaft 26 and the wire is guided directly to the conductor ring 41 without relaying the electric wire guided into the cylindrical shaft 26 by the printed wiring board 85. .

[Effects of the Invention] According to the present invention, in a scanner device, a watertightly protected transmitter / receiver housing portion and a control circuit housing portion are watertightly partitioned by a partition bearing portion, and insulating oil is supplied to the transmitter / receiver housing portion. During filling, a stepping motor that rotates the transducer in the elevation angle direction is provided, so that it is used for rotation in the elevation angle direction between the transducer accommodation section and the control circuit accommodation section as in the past. Since the complicated gear mechanism part is eliminated, and the watertight component part of the partition bearing part can be completed only by the bearing part of the cylindrical shaft, it is possible to provide a watertight, long life, simple and inexpensive one. .

In addition, since the stepping motor is a brushless pulse motor and the rotation is controlled based on the regulation of the starting point by the Hall element, there is no contamination of the insulating oil due to abrasion powder on the sliding portion of the motor. In addition to improving insulation durability, it is possible to provide a simple and inexpensive rotation control configuration.

[Brief description of the drawings]

FIGS. 1 to 21 show an embodiment of the present invention, and FIGS.
1 is a longitudinal sectional front view, and FIG. 2 is a partially omitted longitudinal sectional view in a direction orthogonal to FIG. Fig. 3 is an enlarged side view of a main part configuration, Figs. 4 to 6, Figs. 7 to 9, Fig. 10 to Fig. 13 are main part assembly configuration diagrams, and Fig. 4 is a longitudinal sectional front view. 5 is a plan view of FIG. 4, FIG. 6 is a partial cross-sectional side view of FIG. 4, FIG. 7 is a partial cross-sectional rear view, FIG. 8 is a bottom view of FIG. 7, and FIG. 8 is a side view, FIG. 10 is a plan view, FIG. 11 is a longitudinal front view of FIG.
12, FIG. 13 is a perspective view of a principal part of FIG. 10, FIG. 14 is a plan view, FIG. 15 is a side view of FIG.
FIG. 16 is a side view of FIG. 17 is a plan view of the upper part of FIG. 1, FIG. 18 is a plan view of FIG. 1, FIGS. 19 to 21 are main part assembly configuration diagrams, FIG. 19 is a longitudinal front view, and FIG. 20 is a longitudinal sectional side view of FIG. 19, and FIG. 21 is a plan view of FIG. 22 to 24 show a conventional example, FIG. 22 is a longitudinal sectional front view,
FIG. 23 is a longitudinal sectional side view in a direction orthogonal to FIG. 22, and FIG. 24 is a perspective view. DESCRIPTION OF SYMBOLS 1 ... Scanner device, 2 ... Dome, 2a ... Liquid, 3 ... Holding frame, 5 ... Transceiver, 6 ... Gear, 8 ... Holding plate, 9 ... Terminal plate, 10 ... Rotation Control plate, 12… Magnet, 13… Mounting seat, 14… Hall element, 17… Lead wire, 20… Stepping motor, 21… Detection assembly, 22… Motor assembly, 23… Tilt angle sensor , 24 ... Flange-shaped part, 25 ... Slip ring assembly, 26 ... Cylindrical shaft, 28,29 ... Retaining ring, 30 ... Gear, 31 ... Rotating gear, 32 ... Gear, 33 ... Gear, 34 …… Stepping motor, 27 …… Long screw, 40 …… Lead wire, 41 …… Conductor ring, 41a …… Insulating ring, 43 …… Magnet piece, 45 …… Contact assembly, 49 …… Contact, 52,53 …… Printed circuit board, 60 …… Bottom seat, 60A …… Circuit mounting seat, 61 …… Top seat 70 ...... partition bearing portion 75 ...... protecting cylinder, 77 ...... mounting flange, 85 ...... printed circuit board, 90A ...... reference direction detection heads, 90a ...... Hall element.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-56-111478 (JP, A) JP-A-60-17772 (JP, U) JP-A 52-40165 (JP, U) JP-A 49- 46694 (JP, U) JP-A 62-69175 (JP, U) JP 2-83482 (JP, U) JP 2-68594 (JP, U) (58) Fields surveyed (Int. Cl. ⁶ , DB name) G01S 7/52 G01S 15/96

Claims (6)

(57) [Claims] 1. A sonar scanner device for detecting a reflecting object such as a school of fish while performing scanning for rotating a transducer for forming a sound wave beam in water in a horizontal direction and an elevation angle direction. Is provided with a wave transmitting and receiving accommodating portion which is formed in a watertight manner, is filled with insulating oil and houses the wave transmitting and receiving device,
Above, in a watertight manner, while providing a control system accommodating section accommodating a control system for the rotation and the like formed in the shape of an air chamber, the transmitter and receiver accommodating section and the control system accommodating section A scanner device for a sonar, wherein a partition bearing portion having a bearing for a shaft for rotation is formed in a water-tight manner between the partitions, and (a). A shaft for rotating in the left-right direction is provided by a holding frame of the transducer in a lower portion, and a shaft for rotating in the left-right direction is formed by a cylindrical shaft, and only a bearing for the cylindrical shaft is arranged in a bearing portion of the partition bearing portion. A partition bearing portion forming means to be formed; (b). Drive motor arranging means for arranging a motor for driving the rotation in the left-right direction in the control system housing, and arranging a motor for driving the rotation in the elevation angle direction in the transducer housing; An electric wire introducing means for guiding an electric wire connecting between the control system accommodating portion and the transmitter / receiver accommodating portion through the inside of the cylindrical shaft in a watertight manner, and guiding the electric wire. 2. A scanner device for a sonar according to claim 1, wherein: (a). A restriction control point detecting means for obtaining an elevation angle restriction point signal in a direction in which the pointing direction of the transducer becomes the restriction control point in the elevation angle direction; (b). Stepping motor means for forming the motor for driving the rotation in the elevation angle direction by a stepping motor driven by a pulse signal; (c). When the scanner device is started, after the motor for driving the rotation in the elevation angle direction is continuously rotated in a predetermined direction to obtain the elevation angle regulation point signal, the rotation in the elevation angle direction is performed by a pulse signal having a predetermined polarity and quantity. A scanner for a sonar, comprising: an elevation-angle-restricting control unit that rotates a directivity direction of the transducer in a predetermined direction by driving a motor that drives the sonar. 3. The scanner device for a sonar according to claim 1, wherein: (a). A regulation control point detecting means for obtaining a left / right regulation point signal in a direction in which the pointing direction of the transducer is the left / right regulation control point; (b). Stepping motor means for forming the motor for driving the left-right rotation by a stepping motor driven by a pulse signal; (c). When the scanner device starts to operate, the motor that drives the left-right rotation is continuously rotated in a predetermined direction to obtain the left-right regulation point signal, and then the left-right rotation is driven by a pulse signal with a predetermined polarity and quantity. A right and left regulation control unit that rotates a directivity direction of the transducer in a required direction by driving a motor that drives the sonar. 4. A scanner device for a sonar according to claim 2, wherein said stepping motor is formed by a brushless pulse motor. 5. A sonar scanner device according to claim 2, wherein said means for obtaining said elevation angle regulation point signal or said left and right regulation point signal comprises a Hall element and a magnet. A sonar scanner device comprising a regulation point detecting means for detecting a combination. 6. A scanner device for a sonar according to claim 1, wherein: (a). A slip ring assembly to which a wiring portion of the electric wire is connected is provided outside the cylindrical shaft on the side of the control system housing portion, and a contact assembly arranged corresponding to the slip ring assembly is provided, and the slip ring assembly is provided. A slip ring means for guiding a control system input / output signal of an electronic element arranged in the transducer housing portion and a motor for driving rotation in the elevation angle direction to a required circuit via a contact assembly arranged in a predetermined manner; (b) . A tilt sensor for correcting the directivity of the transducer due to the tilt of the scanner device is fixedly provided at the upper end side of the cylindrical shaft, and the detection signal of the tilt sensor is used to determine the slip ring assembly and the contact assembly. And a tilt sensor arranging means for guiding to a required circuit through the scanner.