JPH08139A - Torque meter for fishing tackle - Google Patents

Abstract

PURPOSE:To enable the sure catching up of a fish. CONSTITUTION:This torque meter for a fishing tackle is obtained by installing sensors 11 and 12, attached to a reel and capable of sensing the torque applied to the reel with a fishing line and a display device 19 for displaying the torque sensed with the sensors 11 and 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fishing tackle torque meter for detecting and displaying a torque applied to a reel shaft by a fishing line.

[0002]

2. Description of the Related Art A fishing tackle is generally used in which a fishing line is attached to a fishing rod, a hook, a float and a weight are attached to the fishing line, and a reel for winding and unwinding the fishing line is attached to the fishing rod. The fisherman feeds the fishing hook, then hangs the fishing line with the fishing rod, and when the fish hits the fishing hook, the fishing line is wound up by the reel to catch the fish. One end of the fishing line is fixed to the reel shaft, and the fixed end side of the fishing line is wound around the reel shaft.

The reel has a pair of side plates rotatably supporting both ends of the shaft by bearings, and a ratchet mechanism connected to the shaft of the reel normally allows only the forward rotation of the shaft of the reel so that the reel shaft can rotate normally. Reversal becomes impossible. For this reason, the rewinding of the fishing line is blocked by the ratchet mechanism, but by operating the ratchet releasing mechanism that releases the ratchet mechanism, the reel shaft can be reversed and the fishing line can be rewound. . When the fish hits the hook, torque is applied from the fish hooked to the reel shaft through the fishing line, but the fisherman rotates the rotary operator connected to the reel shaft to rotate the reel shaft. The fish line can be wound up by rotating it in the forward direction, the fish on the hook can be made to swim without rotating the reel shaft, and the fish on the hook can be freely rewound by activating the ratchet release mechanism to rewind the line appropriately. I can swim.

[0004]

When a fisherman catches a fish with fishing tackle, the fisherman cannot know the size of the fish unless he or she takes the fish out of the water. The fisherman needs to take the most suitable fishing measures such as the time to fish the fish depending on the relationship between the size of the fish hooked in the water and the strength of the fishing line, but the size of the fish hooked in the water must be known. Without it, it would be difficult to catch fish reliably. Conventionally, fishermen have taken the most appropriate measures for fishing, such as the time to fish the fish, based on the experience from the response felt from the fish hanging on the hook through the fishing line, reel, and fishing rod. I can not catch fish because I can not catch it, for example, when the fish that I caught is large and the fishing line is thin compared to that, the time to catch the fish is too short and the fishing line has a large force There was a problem such as cutting.
There is also a problem that the fishing line is left unattended when the fishing line is broken.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a torque meter for fishing tackle which solves the above problems and enables fish to be caught reliably.

[0006]

In order to achieve the above object, the invention according to claim 1 is a detector mounted on a reel for detecting a torque applied to a reel shaft by a fishing line, and a detector for detecting the torque. And a display device for displaying torque.

According to a second aspect of the present invention, the detector detects a torque applied by a fishing line by utilizing a magnetostriction phenomenon and is used for a reel shaft.

According to a third aspect of the present invention, in the fishing tackle torque meter according to the first aspect, the detector is a magnetostrictive element which is used on a reel shaft and which causes a magnetostriction by a torque applied to the reel shaft by a fishing line. The intensity of magnetization changes due to the magnetostriction of this magnetostrictive element.

According to a fourth aspect of the present invention, in the fishing tackle torque meter according to the first aspect, the detector detects a change in magnetic flux generated by a torque applied to the reel shaft by the fishing line, a magnetoresistive element, or It has a Hall element.

According to a fifth aspect of the present invention, in the fishing tackle torque meter according to the first aspect, the detector is adhered to a reel shaft made of an elastic body and is proportional to a torsion moment applied to the reel shaft by a fishing line. It has a strain sensitive element whose resistance changes.

According to a sixth aspect of the present invention, in the fishing tackle torque meter according to the first aspect, the detector is used for a reel shaft, and a magnetostrictive element that causes magnetostriction by a torque applied to the reel shaft by a fishing line. And a magnetostrictive element magnetizing means for magnetizing the magnetostrictive element with a sinusoidal current having a constant frequency and a constant amplitude.

According to a seventh aspect of the present invention, in the fishing tackle torque meter according to the first aspect, the detector is used for a reel shaft, and a magnetostrictive element that causes a magnetostriction by a torque applied to the reel shaft by a fishing line. And a coil for detecting a change in the intensity of magnetization caused by a torsional moment due to the torque applied to this magnetostrictive element.

[0013]

According to the present invention, the torque applied to the reel shaft by the fishing line is detected by the detector, and the display device displays the torque detected by the detector.

In the second aspect of the invention, the detector used for the reel shaft detects the torque applied by the fishing line by utilizing the magnetostriction phenomenon.

According to a third aspect of the invention, in the fishing tackle torque meter according to the first aspect, the magnetostrictive element used on the reel shaft causes magnetostriction due to the torque applied by the fishing line, and the magnetic force of the magnetostrictive element. The strength of magnetization changes due to strain.

According to a fourth aspect of the invention, in the fishing tackle torque meter according to the first aspect, the detection coil, the magnetoresistive element or the hall element detects a change in magnetic flux caused by the torque applied to the reel shaft by the fishing line.

According to a fifth aspect of the invention, in the fishing tackle torque meter according to the first aspect, the resistance of the strain sensing element changes in proportion to the torsion moment applied to the reel shaft by the fishing line.

According to a sixth aspect of the invention, in the fishing tackle torque meter according to the first aspect, the magnetostrictive element magnetizing means magnetizes the magnetostrictive element with a sinusoidal current having a constant frequency and a constant amplitude, and the magnetism is applied to the reel shaft. The magnetostrictive element used causes magnetostriction due to the torque applied by the fishing line.

According to a seventh aspect of the invention, in the fishing tackle torque meter according to the first aspect, the magnetostrictive element used for the reel shaft causes magnetostriction due to the torque applied by the fishing line, and is applied to this magnetostrictive element. The change in the intensity of magnetization caused by the torque-induced torsional moment is detected by the coil.

[0020]

FIG. 1 shows a first embodiment of the present invention. This first
The embodiment is an embodiment of the invention described in claims 1, 2, 3, 4, 6, 7 and is an example in which the torque applied to the reel shaft by the fishing line is detected and displayed by the magnetic attraction phenomenon. The fishing tackle is one in which a fishing line is attached to a fishing rod, a hook, a float, and a weight are attached to the fishing line, and a reel for winding and unwinding the fishing line is attached to the fishing rod. Of the reel shaft, one end of which is rotatably attached to a side plate 12 of the reel shaft by a bearing 9 and the other end of which is rotatably attached to a side plate 13 of the reel. A ratchet mechanism is connected to the reel shaft 11 in the same manner as in the conventional case, and normally only the reel shaft 11 can rotate normally but the reel shaft 11 cannot rotate in the reverse direction. For this reason,
The unwinding of the fishing line is blocked by the ratchet mechanism,
By operating the ratchet releasing mechanism for releasing the ratchet mechanism, the reel shaft 11 can be reversed to rewind the fishing line. When the fish hits the hook, the reel shaft 11 moves from the fish that hits the hook through the fishing line.
However, a fisherman winds up the fishing line by rotating the rotary operator connected to the reel shaft 11 to rotate the reel shaft 11 in the forward direction, or the reel shaft 11
It is possible to move the fish hooked on the hook without rotating, or it is possible to move the fish hooked on the hook freely by activating the ratchet release mechanism to rewind the fishing line appropriately.

Ring-shaped slip rings 14 and 15 are slidably attached to both ends of the magnetostrictive element 11, and a constant current source 16 is attached to the slip rings 14 and 15.
Output terminal of is connected. The sine wave generating circuit 17 and the constant current source 16 constitute a magnetostrictive element magnetizing means, and the sine wave output having a constant frequency from the sine wave generating circuit 17 is the constant current source 1.
6 makes the amplitude constant. The magnetostrictive element 11 is magnetized by supplying a constant-frequency sinusoidal wave having a constant frequency and a constant-amplitude current from the constant current source 16 through the slip rings 14 and 15. The torque exerted by the fishing line in a form perpendicular to the axis, that is, the torque exerted by the caught fish through the fishing line causes magnetostriction and changes the strength of magnetization (magnetic flux).

A detection coil 18 is wound around the magnetostrictive element 11, and the detection coil 18 outputs an output voltage e proportional to the strength of magnetization (change in magnetic flux) of the magnetostrictive element 11.
₀ changes. This output voltage e ₀ increases substantially linearly with the increase of the torsional moment due to the torque applied to the magnetostrictive element 11 in the shape of a cantilever while fishing a fish. Therefore, the magnetostrictive element 11 and the detection coil 18 constitute a detector that detects the torque applied to the reel shaft via the fishing line by the fish caught on the fishing hook. The torque indicator 19 corrects the output voltage e ₀ of the detection coil 18 so as to be accurately proportional to the torque applied to the magnetostrictive element 11 by a correction unit composed of a linearizer or a microcomputer, and a digital amount by the A / D conversion unit. It is converted and displayed on the display unit. Therefore, this display accurately displays the torque applied to the magnetostrictive element 11, that is, the torque applied to the magnetostrictive element 11 via the fishing line by the fish applied to the fishhook, and this torque corresponds to the size of the fish applied to the fishhook. Proportional.

The reel shaft 11 has, for example, a diameter of 3 mm and a length of 50 mm. The oscillation frequency of the sine wave generation circuit 17 is close to the resonance frequency of the detection coil 18, for example, 12
By setting to kHZ, the magnetizing current supplied from the constant current source 16 to the magnetostrictive element 11 was reduced. The magnetostrictive element 11 is made of a ferromagnetic material, and this ferromagnetic material is selected in consideration of the magnitude of hysteresis and the effect of residual strain. Brushes may be used instead of the slip rings 14 and 15 as the electrodes slidingly contacting the magnetostrictive element 11. Further, the torque indicator 19 may convert the torque into the size of the fish and display it.

In the first embodiment, the torque applied to the magnetostrictive element 11 by the fish hooked on the fishing hook through the fishing line is detected by the detector including the magnetostrictive element 11 and the detection coil 18, and the torque indicator 19 is used. Since the angle is displayed, the angler can confirm the size of the fish caught by looking at the torque indicator 19, and the optimum time for fishing the fish can be determined by the relationship between the size of the fish caught on the hook in the water and the thickness of the fishing line. It is possible to take various measures for catching fish, and it is possible to catch fish reliably. Moreover, the magnetostrictive element 11 and the like are not affected by water, and there is no problem in waterproofing. Further, since a current having a constant amplitude is supplied to the magnetostrictive element 11, it is possible to suppress the influence of the temperature rise due to the eddy current loss and the hysteresis loss of the magnetostrictive element 11.

FIG. 2 shows a second embodiment of the present invention. The second embodiment is an embodiment of the invention described in claims 1 to 4, 6 and 7, and is an example in which a coupling capacitor is used without using electrodes such as slip rings and brushes. This second
In the embodiment, the magnetizing coil 20 is wound around the magnetostrictive element 11 in the first embodiment, and the magnetizing coil 20 is
Is supplied with a constant-current sine wave having a constant frequency and a constant amplitude to magnetize the magnetostrictive element 11.

The magnetostrictive element 11 is a cantilevered beam in the form of a cantilever which is applied perpendicularly to the axis by the fishing line, that is, the torque applied by the fish hooked on the hook through the fishing line. Generates a magnetic flux in the circumferential direction proportional to the torque. Electrodes 21 and 22 forming a coupling capacitor are provided in contact with both ends of the magnetostrictive element 11 in a ring shape or a parallel plate shape, respectively, and one electrode 21 is grounded and the other electrode 22 is connected to the input side of the amplifier 23. Connected. The coupling capacitor is electrode 2
Air and a magnetostrictive element 11 are interposed between 1 and 22.

The input side of the amplifier 23 constitutes a closed circuit in which the input side is grounded via a coupling capacitor in terms of alternating current, and the coupling capacitor cuts off the magnetic flux generated in the circumferential direction of the magnetostrictive element 11. The output voltage e _{0 of} 23 changes in proportion to the strength of the magnetic flux. Therefore, the magnetostrictive element 11, the detection capacitors 21 and 22, and the amplifier 23 constitute a detector for detecting the torque applied to the reel shaft by the fish caught on the fishing hook via the fishing line.

The torque indicator 19 corrects the output voltage e ₀ of the amplifier 23 by the correction unit so as to be accurately proportional to the torque applied to the magnetostrictive element 11, and converts it into a digital amount by the A / D conversion unit for display. Display by part. Therefore, this display section shows the torque applied to the magnetostrictive element 11,
That is, the torque applied to the magnetostrictive element 11 via the fishing line by the fish on the hook is accurately displayed, and this torque is proportional to the size of the fish on the hook.

In the second embodiment, the torque applied to the magnetostrictive element 11 by the fish hooked on the fishing hook through the fishing line is detected by the detector including the magnetostrictive element 11, the detecting capacitor and the amplifier 23, and the torque indicator 19 is displayed. The fisherman can check the size of the fish caught on the hook by looking at the torque indicator 19, and the time for fishing the fish can be determined by the relationship between the size of the fish caught on the hook in water and the thickness of the fishing line. It is possible to take the most suitable measure for fishing the fish, etc., and it is possible to surely catch the fish.
Moreover, since the detection capacitor is used, the influence of the abrasion of the reel shaft made of the magnetostrictive element is eliminated.

3 and 4 show a third embodiment of the present invention. The third embodiment is an embodiment of the invention described in claims 1 to 4. In the third embodiment, the output terminal of the constant current source 16 in the first embodiment is the magnetostrictive element 11.
Is connected to both end surfaces of the magnetostrictive element 11 to supply a current having a constant frequency and a sine wave with a constant amplitude between both end surfaces of the magnetostrictive element 11.

The magnetostrictive element 11 has a cantilevered magnetic effect in the form of a cantilever when the fish is caught, by the torque applied perpendicularly to the axis by the fishing line, that is, by the torque applied by the fish hooked on the hook through the fishing line. Generates a magnetic flux in the circumferential direction proportional to the torque. Magnetoresistive element 24,
25 are arranged so as to face both ends of the magnetostrictive element 11 in a non-contact manner, and the resistance value changes due to the magnetic flux generated in the circumferential direction of the magnetostrictive element 11.

A series circuit of the magnetoresistive elements 24 and 25 and a series circuit of the resistor 26, the variable resistor 27 and the resistor 28 are connected in parallel between the DC power source Ei and the ground point to form a bridge circuit. The output voltage e ₀ obtained between the connection point of the resistance elements 24 and 25 and the slider of the variable resistance 27 changes in proportion to the strength of the magnetic flux generated in the circumferential direction of the magnetostrictive element 11. Therefore, the magnetostrictive element 11, the magnetoresistive elements 24 and 25, the resistor 26, the variable resistor 27, and the resistor 28 constitute a detector that detects the torque applied to the reel via the fishing line by the fish caught on the fishing hook.

The torque indicator 19 corrects its output voltage e ₀ by the correction section so as to be in proportion to the torque applied to the magnetostrictive element 11, and converts it into a digital value by the A / D conversion section, and then the display section displays it. indicate. Therefore, the display portion shows the torque applied to the magnetostrictive element 11, that is, the magnetostrictive element 11 by the fish hooked on the fishing line via the fishing line.
It accurately displays the torque applied to the fish, which is proportional to the size of the fish caught. A Hall element or the like may be used instead of the magnetoresistive elements 24 and 25.

In the third embodiment, the torque applied to the magnetostrictive element 11 by the fish hooked on the fishing hook via the fishing line is changed from the magnetostrictive element 11, the magnetoresistive elements 24 and 25, the resistor 26, the variable resistor 27 and the resistor 28. Since it is detected by the detector and is displayed by the torque indicator 19, the angler can confirm the size of the fish caught on the hook by looking at the torque indicator 19, and the size of the fish caught on the hook in the water and the line It becomes possible to take an optimal fish-fishing countermeasure for the time to fish the fish due to the relationship with the thickness, etc., and it is possible to surely fish the fish. Further, the magnetoresistive element 2
4 and 25 are connected in series so as to obtain the output voltage e ₀ according to the difference in the resistance values, the magnetoresistive elements 24 and 2
The magnetoresistive element 2 by canceling the voltage fluctuation due to the temperature
4,25 temperature compensations can be performed. The resistance 2
6, the variable resistor 27 and the resistor 28 may be composed of two magnetoresistive elements, and voltage fluctuations due to the temperatures of these magnetoresistive elements may be canceled to compensate for the temperature of these magnetoresistive elements. Further, the magnetoresistive elements 24 and 25 may be composed of one magnetoresistive element and a resistor.

FIG. 5 shows a fourth embodiment of the present invention. The fourth embodiment is an embodiment of the invention described in claims 1 to 4, 6 and 7, and in the first embodiment, the slip ring 1 is used.
By omitting 4,15, the bearings 9, 10 also serve as electrodes. The output terminals of the constant current source 16 are connected to the bearings 9 and 10, and the magnetostrictive element 11 is connected.
Is magnetized by supplying a sinusoidal wave having a constant frequency and a constant amplitude current from the constant current source 16 through the bearings 9 and 10.

In FIG. 6, the horizontal axis represents the torque (kg-cm) in the fourth embodiment and the vertical axis represents the output voltage e ₀ (V) of the detection coil 18, which is recorded by an XY recorder. is there. As shown, the output voltage e ₀ of the detection coil 18 changes substantially linearly when the torque is in the range of 1 kg-cm to 10 kg-cm. Although the hysteresis of the magnetostrictive element 11 also appears in the relationship between this torque and the output voltage e ₀ of the detection coil 18, the magnitude of the hysteresis is large when the magnetic field is weak and tends to decrease when the magnetic field is strong. I was able to confirm that. The non-linear portion of the relationship between the torque and the output voltage e ₀ of the detection coil 18 is corrected by the correction unit of the torque indicator 19.

In the fourth embodiment, as in the first embodiment, the magnetostrictive element 1 is formed by the fish hooked on the fishhook through the fishing line.
Since the torque applied to 1 is detected by the detector including the magnetostrictive element 11 and the detection coil 18 and displayed by the torque indicator 19, the angler must check the torque indicator 19 to confirm the size of the fish caught on the hook. Therefore, it is possible to take an optimum fish-fishing countermeasure for the time for fishing the fish, etc., depending on the relationship between the size of the fish caught in the water and the thickness of the fishing line, and the fish can be reliably caught.

Further, in the embodiment to which the invention according to claim 6 is applied, the constant current source 16 is used in place of the constant current source 16 in each of the above embodiments.
A constant voltage constant current power supply is used, and this constant voltage constant current power supply performs constant voltage generation and constant current conversion of the sine wave output having a constant frequency from the sine wave generation circuit 17. In this embodiment, substantially the same effects as those of the above-mentioned embodiments can be obtained.
In the embodiment to which the invention according to claim 5 is applied, in the above embodiment, an elastic body is used for the reel shaft, and a strain sensing element bonded to the reel shaft is used for the detector. In this strain-sensitive element, the resistance changes in proportion to the torsional moment applied to the reel shaft by the fishing line and the voltage changes, and this voltage is applied to the torque indicator 19. In addition,
In each of the above embodiments, the torque indicator 19 corrects the output voltage e ₀ into a digital amount by the A / D converter, and then corrects the output voltage e ₀ by the corrector so as to be proportional to the torque applied to the magnetostrictive element 11. You may make it display by a display part.

[0039]

As described above, according to the first aspect of the present invention, the detector mounted on the reel for detecting the torque applied to the reel shaft by the fishing line, and the display for displaying the torque detected by the detector. Since it is provided with the device, it is possible to reliably catch fish.

According to a second aspect of the present invention, in the fishing tackle torque meter according to the first aspect, the detector detects the torque applied by the fishing line by utilizing a magnetostriction phenomenon, and Since it is used, it is possible to reliably catch fish.

According to a third aspect of the present invention, in the fishing tackle torque meter according to the first aspect, the detector is used on a reel shaft, and magnetostriction is generated by a torque applied to the reel shaft by a fishing line. Since the element has an element and the strength of the magnetization changes due to the magnetostriction of the magnetostrictive element, it is possible to reliably catch a fish.

According to a fourth aspect of the invention, in the fishing tackle torque meter according to the first aspect, the detector is a detection coil or a magnetic resistance for detecting a change in magnetic flux caused by the torque applied to the reel shaft by the fishing line. Since it has an element or a hall element, it becomes possible to catch fish certainly.

According to a fifth aspect of the invention, in the fishing tackle torque meter according to the first aspect, the detector is adhered to a reel shaft made of an elastic body and is proportional to a torsion moment applied to the reel shaft by a fishing line. Since it has a strain sensitive element whose resistance changes, it is possible to catch a fish with certainty.

According to a sixth aspect of the present invention, in the fishing tackle torque meter according to the first aspect, the detector is used for a reel shaft, and a magnetic force is generated by a torque applied to the reel shaft by a fishing line. Since it has a strain element and is equipped with a magnetostrictive element magnetizing means for magnetizing this magnetostrictive element with a sinusoidal current having a constant frequency and a constant amplitude, it is possible to catch fish with certainty and It is possible to suppress the effect of temperature rise due to eddy current loss and hysteresis loss of the element.

According to the seventh aspect of the invention, in the fishing tackle torque meter according to the first aspect, the detector is used for a reel shaft, and a magnetic force is generated by a torque applied to the reel shaft by a fishing line. Since it has a strain element and a coil for detecting a change in the intensity of magnetization caused by a torsional moment due to the torque applied to this magnetostrictive element, it is possible to reliably catch a fish, and
Eliminates the effects of reel shaft wear.

[Brief description of drawings]

FIG. 1 is a schematic view showing a first embodiment of the present invention.

FIG. 2 is a schematic view showing a second embodiment of the present invention.

FIG. 3 is a schematic view showing a part of a third embodiment of the present invention.

FIG. 4 is a circuit diagram showing another part of the third embodiment.

FIG. 5 is a schematic view showing a fourth embodiment of the present invention.

FIG. 6 is a characteristic diagram showing torque-torque detection voltage characteristics of the fourth embodiment.

[Explanation of symbols]

 9, 10 Bearing 11 Magnetostrictive element 14, 15 Slip ring 16 Constant current source 17 Sine wave generating circuit 18 Detection coil 19 Torque indicator 20 Magnetizing coil 21,22 Coupling capacitor 23 Amplifier 24,25 Magnetoresistive element 26,28 Resistance 29 Variable resistance

Claims (7)

[Claims] 1. A torque meter for fishing tackle, comprising a detector mounted on a reel for detecting a torque applied to a reel shaft by a fishing line, and a display device for displaying the torque detected by the detector. . 2. The torque meter for fishing tackle according to claim 1,
A torque meter for fishing tackle, wherein the detector detects a torque applied by a fishing line by utilizing a magnetostriction phenomenon and is used for a reel shaft. 3. The torque meter for fishing tackle according to claim 1,
The detector has a magnetostrictive element that is used for a reel shaft and causes a magnetostriction by a torque applied to the reel shaft by a fishing line, and the strength of magnetization is changed by the magnetostriction of the magnetostrictive element. Torque meter for fishing tackle. 4. The torque meter for fishing tackle according to claim 1,
The fishing tackle torque meter, wherein the detector includes a detection coil, a magnetoresistive element, or a Hall element for detecting a change in magnetic flux generated by a torque applied to the reel shaft by the fishing line. 5. The torque meter for fishing tackle according to claim 1,
The torque meter for fishing tackle according to claim 1, wherein the detector has a strain sensing element which is adhered to a reel shaft made of an elastic material and whose resistance changes in proportion to a torsion moment applied to the reel shaft by a fishing line. 6. The torque meter for fishing tackle according to claim 1,
The detector has a magnetostrictive element which is used for a reel shaft and which causes a magnetostriction by a torque applied to the reel shaft by a fishing line. The magnetostrictive element is magnetized by a sinusoidal current having a constant frequency and a constant amplitude. A torque meter for fishing tackle, comprising: 7. The torque meter for fishing tackle according to claim 1,
The detector includes a magnetostrictive element that is used for a reel shaft and produces a magnetostriction by a torque applied to the reel shaft by a fishing line, and a change in the intensity of magnetization caused by a torsion moment due to the torque applied to the magnetostrictive element. A torque meter for fishing tackle, comprising: a coil for detecting.