JP2017083383A - Sonar device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve assembly workability and sealability.SOLUTION: A case 12 comprises a curved cylindrical wall part 20, and the cylindrical wall part 20 is provided with an opening 22. A portion of the cylindrical wall part 20 around the opening 22 is provided with a case side mounting part 24, and a case side mounting surface 2402 is formed of a plane positioned on the same plane. A window side mounting part 26 of an acoustic window 16 has a window side mounting surface 2602 abutted against the case side mounting surface 2402, and the window side mounting surface 2602 is formed of a plane positioned on the same plane. The window side mounting surface 2602 is abutted against the case side mounting surface 2402, and an O ring 3202 is compressed between the case side mounting surface 2402 and the window side mounting surface 2602 such that the acoustic window 16 and the case 12 are fluid-tightly assembled.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a sonar device.

There are sonar devices mounted on ships.
For example, small high-speed boats are equipped with a sonar device at the bow of the draft to search for obstacles ahead such as whales and driftwood so that they can operate safely, or for fishing boats and marine surveys The ship is equipped with a sonar device at the bottom of the ship, which is used to detect fish schools and to measure various things on the sea floor.
The sonar device includes a housing for forming a sonar chamber that is disposed in water and has an opening, an acoustic window that closes the opening, and a transducer that is disposed in the sonar chamber and transmits and receives sound waves through the acoustic window. Yes.
The acoustic window is composed of an acoustically transmissive member and is configured to transmit sound waves.
Further, the interior of the housing is filled with a liquid such as water or oil, so that sound waves can be efficiently transmitted and received by the transducer.
By the way, as shown in FIGS. 6A and 6B, the acoustic window and the housing are attached by replacing the window side attachment portion 52 provided in the acoustic window 50 with the case side attachment portion provided in the housing 54. This is done by fastening to 56 via a bolt 58.
That is, the bolt 58 is inserted into the bolt insertion hole 5202 formed in the window side attachment portion 52, and the bolt 58 is coupled to the screw hole 5602 formed in the housing side attachment portion 56.
Further, the acoustic window 50 and the housing 54 are liquid-tight by being attached via a sealing material such as an O-ring 60 between the attachment surface 5204 of the window-side attachment portion 52 and the attachment surface 5604 of the housing-side attachment portion 56. It is assembled to become.

Japanese Patent Laying-Open No. 2015-98086

By the way, when the housing | casing 54 is exhibiting the curved shape of cylindrical shape or spherical shape, the attachment surface 5204 of the window side attachment part 52 and the attachment surface 5604 of the case side attachment part 56 also become a curved surface, and the bolt insertion hole 5202 and screw hole The shaft centers of 5602 are formed in the normal direction of the mounting surfaces 5204 and 5604, respectively.
As shown in FIG. 6B, the bolt insertion hole 5202 and the screw hole 5602 are axially centered on the bolt insertion hole 5202 and the screw hole 5602 when the fastening of the bolt 58 is completed and the O-ring 60 is compressed. Are designed to match.
However, as shown in FIG. 6A, in the state where the mounting surface 5204 of the window side mounting portion 52 and the mounting surface 5604 of the housing side mounting portion 56 are separated during the bolt fastening operation, the bolt insertion hole 5202 and the screw Deviation occurs in the axial center of the hole 5602. This is because the mounting surfaces 5204 and 5604 are curved.

Therefore, it is difficult to screw the tip of the bolt 58 inserted through the bolt insertion hole 5202 into the screw hole 5602, and there is room for improvement in improving work efficiency.
In addition, it is difficult to make the shapes of the curved surface forming the mounting surface 5204 of the window-side mounting portion 52 and the curved surface forming the mounting surface 5604 of the housing-side mounting portion 56 completely match, resulting in variations in the distance between the two curved surfaces. Because it is easy, there is room for improvement in improving sealing performance.
The present invention has been devised in view of the above circumstances, and an object of the present invention is to provide a sonar device that is advantageous in improving assembly workability and sealing performance.

In order to achieve the above object, a first aspect of the present invention is directed to a housing having a curved wall portion in which a sonar chamber is formed and disposed in water, and an opening provided in the curved wall portion. , A frame-shaped housing-side mounting portion provided at the curved wall portion around the opening, and a curved sound that is attached to the housing-side mounting portion and closes the opening A window and a transmitter unit that is disposed in the sonar chamber and transmits and receives sound waves through the acoustic window, the acoustic window having a frame-like window-side attachment part attached to the housing-side attachment part, A sound-transmitting member disposed inside the window-side mounting portion, and the window-side mounting surface of the window-side mounting portion is applied to the housing-side mounting surface of the housing-side mounting portion, and the window-side mounting portion is configured by a plurality of bolts. Is fastened to the case-side mounting part. A chromatography apparatus, the window side mounting surface and the housing-side mounting surface, characterized in that it is formed in a plane positioned on the same plane, respectively.
In the invention according to claim 2, a seal member extending along the entire circumference of the window-side mounting surface is disposed inside the plurality of bolts between the window-side mounting surface and the housing-side mounting surface. It is characterized by.
The invention according to claim 3 is characterized in that the seal member is joined to the window-side mounting surface.

According to the first aspect of the present invention, since the window-side mounting surface and the housing-side mounting surface are provided so as to be located on the same plane, the housing-side mounting surface and the window-side mounting surface are in a separated state. However, the axial center of the bolt insertion hole and the axial center of the screw hole coincide with each other, and no deviation occurs between these axial centers.
Therefore, the tip of the bolt inserted through the bolt insertion hole can be easily screwed into the screw hole, which is advantageous in improving work efficiency when the window side attachment portion is fastened to the housing side attachment portion with a plurality of bolts.
In addition, since the window-side mounting surface and the housing-side mounting surface are located on the same plane, the gap between the window-side mounting surface and the housing-side mounting surface is unlikely to vary along the periphery of the opening, and the sealing property This is advantageous for improvement.
According to the second aspect of the present invention, it is advantageous to ensure the sealing performance between the acoustic window and the housing without providing a seal washer.
According to the third aspect of the invention, it is advantageous to increase the efficiency of the work of attaching and removing the acoustic window to the housing.

It is explanatory drawing of the sonar apparatus which concerns on 1st Embodiment. It is sectional drawing of the acoustic window and housing | casing of the sonar apparatus which concerns on 1st Embodiment. (A) is explanatory drawing which shows the state which the attachment surface of the window side attachment part and the attachment surface of the housing | casing side attachment part separated in the 1st Embodiment, (B) is the attachment surface of the window side attachment part, and the housing | casing side attachment part. It is explanatory drawing which shows the state with which the attachment surface of was applied. It is explanatory drawing of the sonar apparatus which concerns on 2nd Embodiment. It is sectional drawing of the acoustic window and housing | casing of the sonar apparatus which concerns on 2nd Embodiment. (A) is explanatory drawing which shows the state which the attachment surface of the window side attachment part and the attachment surface of the housing | casing side attachment part separated in the prior art, (B) is the attachment surface of the window side attachment part, and the attachment surface of a housing | casing side attachment part. It is explanatory drawing which shows the state to which is applied.

(First embodiment)
Next, the present embodiment will be described with reference to the drawings.
In the present embodiment, a case where the sonar device is mounted on a hull of a ship will be described.
As shown in FIGS. 1 and 2, the sonar device 10 includes a housing 12, a sonar chamber 14, an acoustic window 16, and a transducer 18.
In the present embodiment, the casing 12 is constituted by a portion of the outer plate of the hull located in the water, and the casing 12 is for forming the sonar chamber 14 in the water.
The housing 12 has a curved cylindrical wall portion 20 that protrudes outward from the sonar chamber 14 with its axis centered in the vertical direction, an upper wall and a bottom wall (not shown) that close the top and bottom of the cylindrical wall portion 20, and a cylindrical wall. And a back wall (not shown) facing the portion 20.
That is, the sonar chamber 14 is partitioned by the cylindrical wall portion 20, the upper wall, the bottom wall, and the back wall, and the sonar chamber 14 is filled with a liquid such as water or oil. Yes.
This liquid has a specific gravity necessary for satisfactory transmission and reception of sound waves by the transducer 18.

As shown in FIGS. 2 and 3, the cylindrical wall portion 20 is provided with an opening 22.
The portion of the cylindrical wall portion 20 around the opening portion 22 is provided with a housing side mounting portion 24 at a location recessed from the cylindrical surface that is the outer surface of the cylindrical wall portion 20. A housing side attachment surface 2402 extending along the entire circumference of the opening 22 outside the portion 22 is provided.
The housing-side mounting surface 2402 is formed by a plane located on the same surface, and screw holes 2404 are formed at a plurality of locations spaced along the entire circumference of the housing-side mounting surface 2402.
The axis 2404X of each screw hole 2404 is orthogonal to the housing side mounting surface 2402.

The acoustic window 16 closes the opening 22 and has a convex curved shape on the outside of the sonar chamber 14. In the present embodiment, the outer surface of the acoustic window 16 is formed as a cylindrical surface that is continuous with the cylindrical surface of the cylindrical wall portion 20 in a state where the acoustic window 16 is attached to the housing 12.
The acoustic window 16 includes a window side attachment portion 26 and an acoustic transmission member 28.
The window-side attachment portion 26 is attached to the housing-side attachment portion 24 around the opening 22 and has a rectangular frame shape.
The window side attachment portion 26 is made of a metal material in order to ensure strength.
The sound transmitting member 28 is disposed inside the window side mounting portion 26 and is formed of a material having excellent sound transmitting properties.
As such materials, various conventionally known materials such as viscoelastic bodies such as rubber and polyurethane, plastics, fiber reinforced plastics, or a combination of two or more materials selected from them can be used. .

The window side attachment part 26 has a window side attachment surface 2602 applied to the housing side attachment surface 2402, and the window side attachment surface 2602 is formed by a plane located on the same plane.
Further, a plurality of counterbore holes 2604 and bolt insertion holes 2606 are formed in the window-side attachment portion 26 corresponding to the plurality of screw holes 2404, and the axis 2606 </ b> X of each bolt insertion hole 2606 is orthogonal to the window-side attachment surface 2602. ing.
Therefore, the window side mounting surface 2602 of the window side mounting portion 26 is applied to the housing side mounting surface 2402 of the housing side mounting portion 24 of the housing 12, and the plurality of bolts 30 are inserted through the bolt insertion holes 2606 and coupled to the screw holes 2404. Then, the window side mounting portion 26 is fastened to the housing side mounting portion 24 by a plurality of bolts 30.

Further, a seal member 32 extending along the entire circumference of the window-side attachment surface 2602 is disposed inside the plurality of bolts 30 between the window-side attachment surface 2602 and the housing-side attachment surface 2402.
In the present embodiment, a groove 2610 is formed along the entire circumference of the window-side attachment surface 2602, and an O-ring 3202 constituting the seal member 32 is disposed in the groove 2610.
In the present embodiment, the O-ring 3202 is vulcanized and bonded to the groove portion 2610 so that the O-ring 3202 is joined to the window-side attachment portion 26, and the operability at the time of attaching and removing the acoustic window 16 to the housing 12 is improved. Has been enhanced.
By fastening the window-side mounting portion 26 to the housing-side mounting portion 24 with a plurality of bolts 30, the window-side mounting surface 2602 is applied to the housing-side mounting surface 2402, and between the housing-side mounting surface 2402 and the window-side mounting surface 2602. Thus, the O-ring 3202 is compressed, so that the acoustic window 16 and the housing 12 are assembled in a liquid-tight manner.
In addition, after the acoustic window 16 is attached to the housing 12 by the plurality of bolts 30, the spotting hole 2604 is filled with the potting material 34.

The transducer 18 is disposed in the sonar chamber 14 via a frame 36 as shown in FIG.
The transducer 18 detects the positional relationship between the hull and the object by emitting sound waves to the object through the acoustic window 16 and receiving the reflected waves.

According to the present embodiment, window-side attachment surface 2602 and housing-side attachment surface 2402 are provided so as to be located on the same plane.
Therefore, as shown in FIGS. 3A and 3B, when the window-side mounting portion 26 is fastened to the housing-side mounting portion 24 with a plurality of bolts 30, the housing-side mounting surface 2402 and the window-side mounting surface 2602 are separated from each other. Even in the separated state, the shaft center 2606X of the bolt insertion hole 2606 and the shaft center 2404X of the screw hole 2404 are matched, and no deviation occurs between the shaft centers 2606X and 2404X.
Therefore, the tip of the bolt 30 inserted through the bolt insertion hole 2606 can be easily screwed into the screw hole 2404, and work efficiency when the window side mounting portion 26 is fastened to the housing side mounting portion 24 by the plurality of bolts 30 is improved. Is advantageous.
Further, since the window side mounting surface 2602 and the housing side mounting surface 2402 are located on the same plane, the interval between the window side mounting surface 2602 and the housing side mounting surface 2402 varies along the periphery of the opening 22. It is difficult to improve the sealing performance.

Further, in the present embodiment, the seal member 32 extending along the entire circumference of the window-side mounting surface 2602 is disposed inside the plurality of bolts 30 between the window-side mounting surface 2602 and the housing-side mounting surface 2402. .
Therefore, it is advantageous in securing a sealing property between the acoustic window 16 and the housing 12.
The seal member 32 may extend outside the plurality of bolts 30 along the entire circumference of the window-side attachment surface 2602 between the window-side attachment surface 2602 and the housing-side attachment surface 2402. In this case, since it is necessary to interpose a seal washer between the bolt 30 and the bolt insertion hole 2606 in order to ensure sealing performance, the seal washer can be omitted according to the present embodiment. This is advantageous for downing.

(Second Embodiment)
Next, a second embodiment will be described with reference to FIGS. In the following embodiments, the same parts and members as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, the description thereof is omitted, and different parts are mainly described. To do.
In the first embodiment, the case where the opening 22 of the housing 12 is provided in the cylindrical wall portion 20 has been described. However, in the second embodiment, the opening 22 of the housing 12 has a spherical shape. The point provided in the wall part 38 is different from the first embodiment.
That is, as shown in FIGS. 4 and 5, the casing 12 is constituted by a portion of the outer plate of the hull located underwater, and the casing 12 has a spherical wall portion 38 with the axis oriented in the horizontal direction. And a back wall (not shown) facing the spherical wall 38.
The sonar chamber 14 is partitioned by a spherical wall 38 convex to the outside of the sonar chamber 14 and a back wall. Inside the sonar chamber 14, as in the first embodiment, Filled with water or liquid such as oil.

An opening 22 is provided at the center of the spherical wall 38.
An end surface portion of the spherical wall portion 38 around the opening portion 22 is a housing side mounting portion 40, and the housing side mounting portion 40 extends along the entire circumference of the opening portion 22 outside the opening portion 22. An annular housing-side mounting surface 4002 is provided.
The case-side attachment surface 4002 is formed by a plane located on the same surface, and screw holes 4004 are formed at a plurality of locations spaced along the entire circumference of the case-side attachment surface 4002.
The axis of each screw hole 4004 is orthogonal to the housing side mounting surface 4002.

The acoustic window 16 closes the opening 22 and has a convex spherical shape on the outer side of the sonar chamber 14. In this embodiment, the outer surface of the acoustic window 16 is the spherical surface of the spherical wall 38. It is formed with a continuous spherical surface.
The acoustic window 16 includes a window side attachment portion 42 and a sound transmission member 28.
The window side attachment portion 42 has an annular shape, and is attached to the housing side attachment portion 40 around the opening 22.
The window-side attachment portion 42 has an annular window-side attachment surface 4202 that is applied to the housing-side attachment surface 4002, and the window-side attachment surface 4202 is formed by a plane located on the same plane.

In addition, a plurality of counterbore holes 4204 and bolt insertion holes 4206 are formed in the window side mounting portion 42 corresponding to the plurality of screw holes 4004, and the axis of each bolt insertion hole 4206 is orthogonal to the window side mounting surface 4202. Yes.
Accordingly, similarly to the first embodiment, the window side mounting surface 4202 of the window side mounting portion 42 is applied to the housing side mounting surface 4002 of the housing side mounting portion 40 of the housing 12, and the plurality of bolts 30 are bolt insertion holes. The window side attachment portion 42 is fastened to the housing side attachment portion 40 by a plurality of bolts 30.
In addition, after the acoustic window 16 is attached to the housing 12 with the plurality of bolts 30, the spotting hole 4204 is filled with the potting material 34.

Similarly to the first embodiment, a groove 4210 is formed along the entire circumference of the window-side mounting surface 4202, and an O-ring 3202 serving as a sealing material is disposed along the groove 4210.
The O-ring 3202 is vulcanized and bonded to the groove 2610, so that the O-ring 3202 is integrally joined to the window side mounting portion 42, and the operability at the time of attaching and removing the acoustic window 16 to the housing 12 is improved. Yes.
The transducer 18 is disposed in the sonar chamber 14 via the frame 36.

Accordingly, also in the second embodiment, similarly to the first embodiment, the window side mounting surface 4202 and the housing side mounting surface 4002 are each formed by a plane located on the same plane. When the window-side mounting portion 42 is fastened to the housing-side mounting portion 40 with the bolts 30, even if the housing-side mounting surface 4002 and the window-side mounting surface 4202 are separated from each other, the axis of the bolt insertion hole 4206 and the screw hole The axial centers of 4004 are matched, and no deviation occurs between the axial centers.
Therefore, the tip of the bolt 30 inserted through the bolt insertion hole 4206 can be easily screwed into the screw hole 4004, and the work efficiency when the window side mounting portion 42 is fastened to the housing side mounting portion 40 by the plurality of bolts 30 is improved. Is advantageous.

Further, since the window-side mounting surface 4202 and the housing-side mounting surface 4002 are formed on the same plane, the distance between the window-side mounting surface 4202 and the housing-side mounting surface 4002 is along the periphery of the opening 22. Variation is less likely to occur, which is advantageous for improving the sealing performance.
Similarly to the first embodiment, a seal member 32 extending along the entire circumference of the window-side mounting surface 4202 is provided inside the plurality of bolts 30 between the window-side mounting surface 4202 and the housing-side mounting surface 4002. Since it is arranged, it is advantageous in securing a sealing property between the acoustic window 16 and the housing 12.

  In the embodiment, the case has been described in which the housing 12 is configured to include a portion of the outer plate of the hull, but the housing 12 is configured only by the housing 12 provided exclusively for the sonar device. May be.

DESCRIPTION OF SYMBOLS 10 Sonar apparatus 12 Case 14 Sonar chamber 16 Acoustic window 18 Transceiver 20 Cylindrical wall part 22 Opening part 24 Case side attachment part 2402 Case side attachment surface 26 Window side attachment part 2602 Window side attachment surface 28 Sound transmission member 30 Bolt 32 Seal Member 3202 O-ring 38 Spherical wall 40 Case-side attachment portion 4002 Case-side attachment surface 42 Window-side attachment portion 4202 Window-side attachment surface

Claims (3)

A housing having a curved wall and a sonar chamber formed therein and disposed in water;
An opening provided in the curved wall;
A frame-like housing-side mounting portion provided at the curved wall portion around the opening;
A curved acoustic window attached to the housing side mounting portion and closing the opening;
A transmitter unit disposed in the sonar chamber for transmitting and receiving sound waves through the acoustic window;
The acoustic window has a frame-like window-side attachment portion attached to the housing-side attachment portion, and an acoustically transmissive member disposed inside the window-side attachment portion,
A sonar device in which a window side mounting surface of the window side mounting portion is applied to a housing side mounting surface of the housing side mounting portion, and the window side mounting portion is fastened to the housing side mounting portion by a plurality of bolts,
The window side mounting surface and the housing side mounting surface are each formed by a plane located on the same plane,
A sonar device characterized by that. A seal member extending along the entire circumference of the window side mounting surface is disposed inside the plurality of bolts between the window side mounting surface and the housing side mounting surface.
The sonar device according to claim 1. The seal member is joined to the window side mounting surface,
The sonar device according to claim 2.

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