JP2004020276A - Fish finder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To find fish swimming in an area near to a water surface. <P>SOLUTION: This finder is provided with a clump 7 attached to a ship, a support rod 9 attached to the clump 7 to position an end part 23 under the surface 5 of the water, an ultrasonic oscillator 13 supported adjustably in oscillation to the end part 23 of the support rod 9, and for making an emission and reception direction of an ultrasonic wave change-regulatable to a water depth direction and a direction crossed therewith, and an operation means 15 for change-regulating the emission and reception direction of the ultrasonic oscillator 13. A turning means 11 for supporting rotatably an intermediate part of the support rod 9 is provided between the clump 7 and the support rod 9, an the turning means 11 rotation-moves the support rod 9 to be switched between a using condition where the ultrasonic oscillator 13 is positioned in the underwater and a storing condition where it is positioned on the water surface. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a simple fish finder that is attached to a small boat or the like.
[0002]
[Prior art]
2. Description of the Related Art As a simple fish finder conventionally used in small boats and the like, there is, for example, one described in JP-A-2002-6038. In this fish finder, an ultrasonic transducer for transmitting and receiving an ultrasonic wave is suspended from a guide rod via a thread. In addition, there is a type in which an ultrasonic vibrator is attached to the bottom of a small boat. In any case, by transmitting an ultrasonic wave only in the water depth direction, it is possible to detect at what depth position the fish school exists.
[0003]
[Problems to be solved by the invention]
However, if the configuration is such that the school of fish is detected only in the depth direction as described above, there is a problem that it is difficult to detect a fish such as a bus that is slightly away from directly below the ship.
[0004]
On the other hand, there is a large ship in which the direction of transmission and reception of ultrasonic waves can be changed and adjusted. However, the structure of a large ship cannot be simply reduced in size as it is and cannot be applied to a small ship, and there is a problem in that the structure becomes complicated and the fish finder becomes extremely expensive.
[0005]
SUMMARY OF THE INVENTION It is an object of the present invention to provide a fish finder that is simple and inexpensive and that can change and adjust the direction of transmission and reception of ultrasonic waves in the direction of water depth and in the direction crossing it.
[0006]
[Means for Solving the Problems]
According to the first aspect of the present invention, there is provided a clamp attached to a ship, a support rod attached to the clamp, the end of which can be positioned below the water surface, and an ultrasonic wave supported by the end of the support rod so as to be able to swing. An ultrasonic vibrator capable of changing and adjusting a receiving direction to a water depth direction and a direction crossing the water direction, and operating means for changing and adjusting a transmitting / receiving direction of the ultrasonic vibrator.
[0007]
The invention according to claim 2 is the fish finder according to claim 1, wherein a rotation means for rotatably supporting an intermediate portion of the support rod is provided between the clamp and the support rod. The means is capable of rotating the support rod between a use state in which the ultrasonic transducer is located in water and a storage state in which the ultrasonic transducer is located on the water surface.
[0008]
The invention according to claim 3 is the fish finder according to claim 2, wherein the rotating means biases the support rod to a use state in which the ultrasonic vibrator is located in water, and Stopper means for receiving the urging force of the urging means to position the support rod in accordance with the use state; and a lock for positioning the support rod in a stored state in which the ultrasonic transducer is located on the water surface. Means.
[0009]
According to a fourth aspect of the present invention, in the fish finder according to the second or third aspect, when the support rod is attached to the starboard or port side of the ship by the clamp, the rotating means is provided. As a boundary, the ultrasonic transducer side of the support rod is rotationally moved rearward in the traveling direction of the boat.
[0010]
According to a fifth aspect of the present invention, in the fish finder according to the second or third aspect, the rotating means is provided when the support rod is attached to the starboard side or the port side of the rear of the boat by the clamp. The ultrasonic transducer side of the support rod may be rotationally moved toward the center of the boat with the rotation means as a boundary.
[0011]
【The invention's effect】
According to the first aspect of the present invention, the clamp can be attached to the ship, the support rod can be supported by the clamp, and the ultrasonic vibrator can be supported at the end of the support rod located below the water surface so as to be able to swing. Then, it is possible to change and adjust the transmission / reception direction of the ultrasonic vibrator by the operation means, and to change / adjust the transmission / reception direction of the ultrasonic wave in the water depth direction and the direction intersecting with the water depth direction.
[0012]
Therefore, not only when the school of fish is located in the depth direction with respect to the ship, but also the school of fish that is slightly away from the ship, the ultrasonic transducer can be directed to transmit and receive ultrasonic waves, It is possible to accurately detect a school of fish swimming immediately below.
[0013]
Moreover, the ultrasonic transducer is supported by a support rod attached to a clamp attached to a ship so as to be able to swing and can be changed and adjusted by operating means, thereby changing and adjusting the direction of transmission and reception of ultrasonic waves. And can be manufactured at a low cost with a simple structure.
[0014]
According to the second aspect of the present invention, in addition to the effect of the first aspect of the present invention, since the rotating means for rotatably supporting the intermediate portion of the supporting rod is provided between the clamp and the supporting rod, the supporting rod is The ultrasonic transducer can be rotated and moved between a use state where the ultrasonic transducer is located in water and a storage state where the ultrasonic transducer is located above the water surface. Therefore, when the ship advances, the support rod and the ultrasonic transducer do not receive water resistance, and the ship can smoothly advance.
[0015]
According to a third aspect of the present invention, in addition to the effect of the second aspect, the rotating means biases the support rod to a use state in which the ultrasonic vibrator is located in water, and the biasing means. A stopper is provided for receiving the urging force of the means and positioning the support rod in accordance with the use state, so that the support rod is reliably positioned in the use state, and transmission and reception of ultrasonic waves by the ultrasonic vibrator are adjusted. It can be performed accurately in the direction.
[0016]
Further, the support rod can be reliably positioned by the locking means in accordance with the stored state where the ultrasonic transducer is located on the water surface. Therefore, when the ship advances, the ultrasonic vibrator side of the support rod does not receive water resistance, and the ship can be more reliably and smoothly advanced.
[0017]
In the invention of claim 4, in addition to the effect of the invention of claim 2 or 3, in addition to the rotation means, when the support rod is attached to the starboard or port side of the ship by the clamp, The ultrasonic transducer side of the support rod can be rotationally moved rearward in the traveling direction of the boat. Therefore, when the ship advances while detecting a school of fish with the ultrasonic transducer, even if foreign matter in the water hits the support rod and an excessive force acts on the support rod rearward in the traveling direction of the ship, the ship rotates as described above. Foreign matter can be escaped by rotating the ultrasonic transducer side of the support rod rearward in the traveling direction of the ship from the means. For this reason, even if a foreign substance in the water hits the support rod, it is possible to suppress an excessive force from acting on the clamp and the like, and it is possible to suppress damage to the clamp and the like, detachment from the ship, etc., and to detect fish schools with a simple structure. Can be performed accurately.
[0018]
In the invention of claim 5, in addition to the effect of the invention of claim 2 or 3, when the support rod is attached to the starboard side or port side of the trailing edge of the ship by the clamp, the pivoting means allows the support rod to be mounted. The ultrasonic vibrator can be pivotally moved toward the center of the ship. Accordingly, it is possible to prevent the ultrasonic transducer side of the support rod from protruding to the starboard or port side of the ship, and to support the ultrasonic transducer of the support rod even in the case of berthing on the starboard side or port side. The side does not get in the way, and berthing and the like can be performed smoothly.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
1 and 2 relate to an embodiment of the present invention. FIG. 1 is a front view showing a boat 3 which is a small boat as a boat provided with a fish finder 1 in relation to a water surface 5, and FIG. FIG. 3 is a side view and FIG. As shown in FIGS. 1, 2, and 3, the fish finder 1 includes a clamp 7, a support rod 9, a rotating unit 11, an ultrasonic vibrator 13, and an operating unit 15. The ultrasonic transducer 13 is connected to a detector 19 by a wiring 17.
[0020]
The clamp 7 is attached to a starboard edge 21 of the boat 3 which is an edge of the boat. The support rod 9 is attached to the clamp 7, and one end 23 is located below the water surface 5. The turning means 11 is provided between the clamp 7 and the support rod 9 and rotatably supports an intermediate portion of the support rod 9.
[0021]
The ultrasonic vibrator 13 is supported by the end 23 of the support rod 9 so as to be capable of swinging, and changes the ultrasonic wave transmitting / receiving direction to a water depth direction and a diagonal direction, a horizontal direction, or the like that intersects the water depth direction. It is adjustable.
[0022]
The operating means 15 changes and adjusts the transmitting and receiving directions of the ultrasonic transducer 13.
[0023]
Further, in the present embodiment, the support rod 9 can be rotated around the axis with respect to the rotation means 11, and for example, as shown in FIG. In the state where the change has been adjusted, it can be further rotated in the horizontal direction.
[0024]
The detector 19 is driven by a battery, drives the ultrasonic vibrator 13 to emit ultrasonic waves, receives a signal received by the ultrasonic vibrator 13, converts a round trip time from transmission to reception into a distance. If the transmitting / receiving direction is the water depth direction, it is displayed as the depth. In addition, the size and density of the school of fish or the shape and sediment of the seabed are identified and displayed on the image according to the strength of the reflected waves.
[0025]
In the case where the direction of transmission and reception of ultrasonic waves by the ultrasonic transducer 13 intersects the depth direction, as shown in FIG. 1, the round trip time from transmission to reception of ultrasonic waves is converted into the distance L. As the depth, the oblique angle θ of the ultrasonic transducer 13 with respect to the water depth direction and the water depth H1 from the water surface 5 are input to the detector 19 by ten-key operation or the like, or automatically input by detection, so that the water depth H The horizontal distance S is calculated, for example, as follows.
[0026]
H = H1 + H2 = H1 + Lcos θ (1)
S = L sin θ (2)
When detecting the water depth H1 from the water surface 5 of the ultrasonic vibrator 13 by a sensor, a position sensor is provided between the rotating means 11 and the support rod 9, and the value is converted from the detected value of the position sensor. Will be. When manually inputting H1 by operating the numeric keypad, a scale is provided between the support rod 9 and the rotating means 11, and H1 can be input by reading the scale.
[0027]
The angle θ with respect to the water depth direction can be detected by a rotation angle sensor or the like provided between the support rod 9 and the ultrasonic transducer 13 and input to the detector 19. When the angle θ is manually input, a scale corresponding to the angle θ is provided between the operating means 15 and the support rod 9 so that the scale can be read and input to the detector 19. .
[0028]
Since the ultrasonic vibrator 13 side of the support rod 9 is located underwater in its use state, when the boat 3 is advanced, it is easily affected by water resistance. For this reason, a configuration in which the support rod 9 can be rotationally moved by the rotating means 11 between a use state in which the ultrasonic vibrator 13 is located in water and a storage state on the upper surface side in FIG. Has become.
[0029]
That is, in the retracted state of FIG. 2, the ultrasonic vibrator 13 side of the support rod 9 is located on the water surface 5, and the ultrasonic vibrator 13 side of the support rod 9 does not receive water resistance as the boat 3 advances. , The boat 3 can proceed smoothly.
[0030]
When the support rod 9 is attached to the starboard of the boat 3 by the clamp 7, the rotation means 11 moves the ultrasonic vibrator 13 side of the support rod 9 from the boat with the rotation means 11 as a boundary. 3 can be rotationally moved rearward in the traveling direction as shown in the middle position in the chain line diagram of FIG. Therefore, when the boat 3 is advanced while the fish school is being detected by the ultrasonic vibrator 13, even if the foreign matter W in the water hits the support rod 9 and an unreasonable force acts on the support rod 9 rearward in the traveling direction of the boat 3, As described above, the foreign matter W can be released by rotating the ultrasonic transducer 13 side of the support rod 9 rearward in the traveling direction of the boat with the rotating means 11 as a boundary. For this reason, even if the foreign matter W in the water hits the support rod 9, it is possible to suppress an excessive force from acting on the clamp 7 and the like. The structure enables accurate fish school detection.
[0031]
The clamp 7 and the support rod 9 of the fish finder 1 can be similarly configured when attached to the port side of the boat 3.
[0032]
Next, a specific structure will be further described with reference to FIGS. 4 is a perspective view showing the clamp 7 and the supporting rod 9 removed from the boat 3, FIG. 5 is a side view thereof, FIG. 6 is a plan view thereof, FIG. 7 is a front view of the clamp, and FIG. FIG. 9 is a front view for explaining a rotating means, FIG. 10 shows a holding plate, (a) is a front view, (b) is a side view, and FIG. 11 is an urging means. FIG. 12A is a sectional view, FIG. 12B is a side view, and FIGS. 12 and 13 are perspective views illustrating a rotation operation of the ultrasonic vibrator.
[0033]
As shown in FIGS. 4 to 7, the clamp 7 includes a clamp bracket 25 and a fastener 27. The clamp bracket 25 is formed of a resin and has a pair of feet 29 and 31. The fastener 27 is screwed and supported on one foot 29. The screwing support of the fastener 27 is performed by screwing a screw shaft 35 of the fastener 27 to a hexagon nut 33 fixed to the foot 29. The fastener 27 has a thrust pad 37 at the front end of the screw shaft 35 and a knob 39 at the rear end.
[0034]
The rear surface 41 of the foot 31 is configured as a fixed surface that comes into contact with the outer surface of the edge 21 of the boat 3. The foot portion 31 is provided with an outer cylindrical portion 43. A flange 45 is provided on the front surface of the outer cylinder 43. As shown in FIG. 7, stopper pins 47 are protrudingly provided on the left and right sides of the upper and lower centers of the flange portion 45 as shown in FIG. A lock hole 48 is formed through the upper end of the outer cylindrical portion 43 on the tip side. A hinge bracket 49 is supported by the outer cylinder 43 so as to be rotatable around an axis.
[0035]
Referring to FIGS. 8 and 9, the hinge bracket 49 is provided with upper and lower support portions 51 and 53. The support portion 51 includes a fixed side portion 55 and a detachable holding plate 57. The fixed side portion 55 includes an arc-shaped concave portion 59 and butting portions 61 on both sides. The butting portion 61 is provided with a female screw portion 63.
[0036]
The holding plate 57 includes an arcuate concave portion 65 and an abutting portion 67, also with reference to FIG. The butting portion 67 is provided with a through hole 69. The abutting portion 67 of the holding plate 57 is opposed to the abutting portion 67 of the fixed side portion 55, and the concave portions 59 and 65 can form an arc that surrounds and supports the outer surface of the support rod 9.
[0037]
The holding plate 57 can fasten and support the support rod 9 by the recesses 59 and 65 by fastening the fastener 71 shown in FIG. 6 penetrating the through hole 69 into the female screw portion 63 of the fixed side portion 55. . When the support rod 9 is fastened, a gap 73 is formed between the facing portions 61 and 67 as shown in FIG. Therefore, the support rod 9 can be supported by the hinge bracket 49 with a predetermined fastening force by tightening the fastener 71. In this state, the support rod 9 is supported by the support portion 51 so as to be rotatable around the axis by a fixed fastening force and immovable in the axial direction by frictional engagement.
The support portion 53 includes a concave portion 77 having a U-shaped cross section surrounded by a wall portion 75 as shown in FIGS. The inner surface of the concave portion 77 is formed in an arc shape having the same curvature as the arc shape of the concave portion 59. Therefore, the outer surface of the support rod 9 can be guided and supported by the recess 77.
[0038]
The hinge bracket 49 is provided with an inner tubular portion 79 that fits into the outer tubular portion 43. A coil spring 81 is interposed between the outer tube 43 and the inner tube 79 as urging means.
[0039]
As shown in FIG. 11, the coil spring 81 is provided with engaging portions 83 and 85 at both ends. The engaging portion 83 is circumferentially engaged with a locking concave portion 87 of the outer cylindrical portion 43, and the engaging portion 85 is fitted and locked in a locking hole 89 of the inner cylindrical portion 79.
[0040]
At the rear end of the coil spring 81, a resin washer 91 is disposed between the outer cylinder portion 43 and the inner cylinder portion 79, and the resin washer 91 is retained by a retaining ring 93 that engages with the inner cylinder portion 79.
[0041]
The outer cylindrical portion 43, the inner cylindrical portion 79, and the coil spring 81 constitute the rotating means 11. That is, the hinge bracket 49 can be rotationally moved relative to the clamp bracket 25 in the storage state in the direction of arrow A in FIG. The coil spring 81 urges the hinge bracket 49 to rotate with respect to the clamp bracket 25 so as to maintain the use state of FIG. The state of FIG. 9 is the use state of FIG. 1 in which the ultrasonic vibrator 13 is located underwater.
[0042]
As shown in FIG. 9, stopper engagement portions 95 and 97 are provided outside the outer cylinder 43 on the base side of the inner cylinder 79. The stopper engaging portion 95 is for starboard, and the stopper engaging portion 97 is for port. Therefore, the hinge bracket 49 can be shared for starboard and port.
[0043]
Since the present embodiment is used for starboard, the stopper engaging portion 95 engages with the stopper pin 47 to receive the urging force of the coil spring 81, and the support rod 9 corresponds to the use state. It is configured to perform positioning. Therefore, in the present embodiment, the stopper engaging portion 95 and the stopper pin 47 constitute stopper means.
[0044]
A lock hole 99 is provided in the inner cylinder portion 79 as shown in FIG. The lock hole 99 faces the lock hole 48 of the outer cylindrical portion 43 when the support rod 9 is in the retracted state in which the ultrasonic transducer 13 is located on the water surface. By inserting the lock pin 101 shown in FIG. 4 into the lock holes 48 and 99, the hinge bracket 49 can be locked in the retracted state with respect to the clamp bracket 25. In this state, the support rod 9 can be positioned corresponding to the stored state in which the ultrasonic vibrator 13 is located on the water surface 5, and the lock holes 48, 99 and the lock pin 101 serve as lock means in this embodiment. Make up. The lock pin 101 is supported by a string 102 on the screw shaft 35 or the like.
[0045]
The support rod 9 is formed of, for example, an aluminum pipe, and an intermediate portion thereof is supported by the hinge bracket 49. Resin caps 103 and 105 are provided above and below the support rod 9.
[0046]
The operation means 15 includes an operation knob 107 and an operation rod 109. In the present embodiment, the operation means 15 includes an operation arm 111 provided integrally with the resin cap 103.
[0047]
The operation knob 107 is attached to a tip of the operation rod 109. The operation rod 109 is provided with a stopper 113 on the operation knob 107 side. The stopper 113 contacts the end face of the resin cap 103 to position the operation rod 109 for pushing the resin cap 103 into the resin cap 103. A fixing tool 115 is screwed to the resin cap 103. By tightening the fixture 115, the tip of the fixture 115 abuts on the operation rod 109, and the operation rod 109 can be positioned at an arbitrary position.
[0048]
The other end of the operation rod 109 is rotatably connected to one end of a bell crank 117 through the resin cap 105. The bell crank 117 is rotatably supported by a bracket 119 provided on the resin cap 105. The ultrasonic transducer 13 is supported on the bell crank 117. The wiring 17 passes through the inside of the support rod 9.
[0049]
To attach the support rod 9 and the like to the starboard edge 21 of the boat 3, the fastener 27 of the clamp 7 is loosened, and the distance between the rear surface 41 and the thrust pad 37 is increased. In this state, the clamp 7 is mounted so as to straddle the upper edge of the edge 21 of the boat 3. In this state, the rear surface 41 of the clamp 7 faces the outer surface of the edge 21 of the boat 3, and the thrust pad 37 faces the inner surface.
[0050]
Next, by turning the knob 39 of the fastener 27, the screw shaft 35 is screwed and moved with respect to the hexagon nut 33, and the thrust pad 37 is abutted against the inner surface of the starboard edge 21 of the boat 3. Further, by tightening the edge 21 with the rear surface 41 and the thrust pad 37, the support rod 9 and the like can be easily attached to the starboard edge 21 of the boat 3 as shown in FIGS.
[0051]
By attaching the support rod 9 as described above, the ultrasonic vibrator 13 can be set to a use state where the ultrasonic vibrator 13 is located underwater as shown in FIG. In this state, the inner cylinder portion 79 is rotationally urged against the outer cylinder portion 43 by the urging force of the coil spring 81, and the stopper engagement portion 95 is positioned by engaging with the stopper pin 47. It can be reliably set in the vertical use state.
[0052]
In the use state of FIGS. 1 to 3 and 5, the bell crank 117 can be rotated with respect to the bracket 119 via the operation rod 109 by loosening the fixture 115 and pushing in or pushing up the operation knob 107. .
[0053]
By the rotation of the bell crank 117, the ultrasonic vibrator 13 is rotated from the state shown in the solid line in FIG. 5 and the state shown in FIG. Changes can be adjusted. The angle θ can be adjusted in a range of 90 ° or more and a range of 90 ° or less.
[0054]
Further, the support rod 9 is supported by the support portion 51 so as to be rotatable around the axis by a fixed fastening force and immovable in the axial direction by frictional engagement. 49 can be rotated about an axis. Thus, for example, by rotating the ultrasonic transducer 13 in the direction shown by the one-dot chain line in FIG. 5 in a direction perpendicular to the paper surface, the ultrasonic transducer 13 can be turned by substantially 360 °.
[0055]
By such a change and adjustment of the ultrasonic vibrator 13, it is possible to accurately and easily detect a fish school G such as a bus located at a place slightly below the boat 3 as shown in FIG. Further, as described above, since the ultrasonic transducer 13 can be changed and adjusted by turning in the horizontal direction with respect to the water depth direction and the direction intersecting the same, the school of fish G is positioned near the water surface 5 behind and on the side of the boat 3. , Regardless of where you are in front of you.
[0056]
In order to bring the support rod 9 into the retracted state as viewed in the dashed line diagram in FIG. 3, the user holds the support rod 9 and operates the ultrasonic vibrator 13 to rotate toward the center of the boat 3. As a result, the hinge bracket 49 rotates with respect to the clamp bracket 7 in the direction of arrow A in FIG.
[0057]
When the support rod 9 is rotated by approximately 90 °, the lock holes 48 and 99 face each other. At this opposing position, the lock pin 101 shown in FIG. 4 is inserted into the lock holes 48 and 99, and the hinge bracket 49 is fixed to the clamp 7. Therefore, the support rod 9 can be securely fixed in the stored state of FIG.
[0058]
14 and 15 show the port side clamp 7A and the coil spring 81A. FIG. 14 is a front view of the clamp 7A, FIG. 15A is a cross-sectional view of the coil spring 81A, and FIG.
[0059]
As shown in FIG. 14, in the port side clamp 7A, the stopper pin 47A is provided on the opposite side of the starboard side stopper pin 47 in FIG. In the coil spring 81A, the positions of the engaging portions 83 and 85 are set at positions opposite to those of the starboard one shown in FIG. Accordingly, the locking concave portion 87 formed in the outer cylindrical portion 43 of the clamp 7 and the locking hole portion 89 formed in the inner cylindrical portion 79 of the hinge bracket 49 are also set at the opposite positions.
[0060]
When such a clamp 7A and the coil spring 81A are used, the support rod 9 is attached to the port side of the boat 3 by the clamp 7A. In the storage position of the support rod 9, the support rod 9 is rotated to the rear side of the boat 3 as in FIG.
[0061]
As described above, the present invention can be applied to both starboard and port use simply by replacing the clamps 7, 7A and the coil springs 81, 81A, so that the components can be shared, and it is possible to cope easily and at low cost.
[0062]
Further, the rotating means 11 may be configured such that the spring force of the coil spring acts in both directions without using a structure corresponding to only one of the starboard and the port, and may be used for both the starboard and the port. is there. For example, a pair of star-side and port-side coil springs is provided, and the structure is such that the springs are urged to be used from any direction, so that both spring forces are balanced when the support rod 9 is used. Thereby, it is possible to cope with both for starboard and port. In this case, the stopper pins 47 and 47A become unnecessary.
[0063]
Note that the ultrasonic transducer 13 may be configured so that the transmission / reception direction can be adjusted only in the vertical direction.
[0064]
If the boat 3 is a small boat, it can be applied to a motor boat, a cruiser, and the like.
[0065]
Although the operation means 15 is configured to be operated manually, it can be driven by using a small motor and a rack and pinion.
[0066]
In the above embodiment, the support rod 9 is attached to the starboard or port side of the boat 3. However, the support rod 9 may be attached to the leading end or the trailing edge of the boat 3.
[0067]
16 and 17 show an embodiment in which the support rod 9 is attached to the rear part of the boat 3 by the clamp 7, FIG. 16 is a plan view of a used state, and FIG. 17 is a plan view of a stored state. The overall configuration of the fish finder 1 is the same as that of the above-described embodiment, and the corresponding components are denoted by the same reference numerals.
[0068]
In this embodiment, when the support rod 9 or the like is attached to the starboard side of the rear edge 21A of the boat 3 by the clamp 7, the pivoting means 11 is moved beyond the support rod 9 with the pivoting means 11 as a boundary. The sonic transducer 13 is pivotally displaced toward the center of the boat 3. When the support rod 9 and the like are attached to the port side of the trailing edge 21A of the boat 3 by the clamp 7, the rotating means 11 rotates in a state opposite to that in FIG.
[0069]
By such a rotation, the ultrasonic transducer 13 side of the support rod 9 does not protrude greatly to the starboard side or the port side of the boat 3 in the retracted state, and the support rod 9 is supported even when the boat 3 is docked. It is possible to prevent the ultrasonic vibrator 13 from being in the way and to smoothly berth.
[0070]
In the present embodiment, the entire support rod 9 is accommodated within substantially the width of the boat 3, so that it is possible to prevent the entire support rod 9 in the stored state from hindering the operation of the boat 3 when operating the boat 3.
[Brief description of the drawings]
FIG. 1 is a front view of a boat provided with a fish finder according to an embodiment of the present invention.
FIG. 2 is a side view on the starboard side of the boat in a state in which a support rod is used, according to one embodiment.
FIG. 3 is a plan view of the boat in a state where a support rod is stored according to an embodiment.
FIG. 4 is a perspective view around a clamp and a support rod according to one embodiment.
FIG. 5 is a side view of the vicinity of a clamp and a support rod according to the embodiment.
FIG. 6 is a plan view around a clamp and a support rod according to the embodiment;
FIG. 7 is a front view of the clamp according to the embodiment.
FIG. 8 is an enlarged cross-sectional view of a main part around a rotation unit according to one embodiment.
FIG. 9 is a front view of a hinge bracket according to one embodiment.
FIG. 10A is a side view of the holding plate, and FIG. 10B is a front view of the holding plate according to the embodiment.
FIG. 11A is a sectional view of a coil spring, and FIG. 11B is a side view of the coil spring, according to the embodiment;
FIG. 12 is a side view showing an operation state according to the embodiment.
FIG. 13 is a side view showing an operation state according to the embodiment.
FIG. 14 is a front view showing a port side clamp according to one embodiment.
15A and 15B show a port-side coil spring, wherein FIG. 15A is a sectional view and FIG. 15B is a side view.
FIG. 16 is a plan view of a boat in a state where a support rod is used according to another embodiment of the present invention.
FIG. 17 is a plan view of a boat in a support rod stored state according to another embodiment.
[Explanation of symbols]
1 Fish finder
3 boat (ship)
5 Water surface
7,7A clamp
9 Support rod
11 Rotating means
13 Ultrasonic transducer
15 Operation means
23 end
47, 47A Stopper pin (stopper means)
48,99 Lock hole (lock means)
81, 81A coil spring (biasing means)
95, 97 Stopper engaging part (stopper means)
101 lock pin (lock means)

Claims (5)

A clamp attached to the ship,
A support rod attached to the clamp, the end of which can be positioned below the water surface;
An ultrasonic vibrator that is supported at the end of the support rod so as to be capable of swinging adjustment and that can change and adjust the transmission / reception direction of ultrasonic waves in a water depth direction and in a direction crossing the water depth direction,
Operating means for changing and adjusting the transmitting and receiving directions of the ultrasonic vibrator. The fish finder according to claim 1,
Rotating means for rotatably supporting an intermediate portion of the support rod is provided between the clamp and the support rod,
The fish finder according to claim 1, wherein said rotating means is capable of rotating said support rod between a use state in which said ultrasonic transducer is located in water and a storage state in which said ultrasonic transducer is located on water surface. It is a fish finder of Claim 2, Comprising:
The rotation unit is configured to urge the support rod to a use state in which the ultrasonic vibrator is located in the water, and to receive the urging force of the urging unit so that the support rod corresponds to the use state. And a lock means for positioning the support rod in accordance with a stored state where the ultrasonic vibrator is located on the water surface. The fish finder according to claim 2 or 3,
When the support rod is attached to the starboard or port side of the ship by the clamp, the rotation means rotates the ultrasonic transducer side of the support rod rearward in the traveling direction of the ship with the rotation means as a boundary. A fish finder that is moved. The fish finder according to claim 2 or 3,
When the support rod is attached to the starboard side or port side of the rear part of the ship by the clamp, the turning means may move the ultrasonic vibrator side of the support rod to the center of the ship with the turning means as a boundary. A fish finder that rotates to the side.

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