JPH0643931B2 - Tension gauge - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a tension gauge that can measure a wide range of tension applied to a fishing line with high accuracy by using at least two force detectors having different measurement ranges. Is. [Prior art] Tension gauges can be classified into three types, mechanical tension gauges, optical tension gauges, and electrical tension gauges, depending on the type and structure of the force detector incorporated. The reality is that they are used properly according to their needs.

Since many of such conventional tension gauges have a built-in single force detector, the measurement load width is limited to a very narrow range. Therefore, for example, the tension applied to the force detector, such as the tension applied to the fishing line intended by the present invention, that is, the load that varies significantly from a tension load with a very weak load width to a considerably strong tension load. When measuring, it is impossible to accurately measure with a tension gauge having a single force detector. Therefore, as described above, when measuring the tension load when the fluctuation of the tension load is large, a plurality of tension gauges with different measurement load ranges are prepared and placed, and these tension gauges are sequentially replaced and measured. Was trying to achieve.

Therefore, for example, for tension load measurement when the measurement load width fluctuates over a wide range, such as from a weak tension load hanging on a reel or the like for winding up a fishing rod attached to a fishing rod to a considerably strong tension load, With the tension gauge configured as above,
At the time of the measurement, it is not possible to measure it unless two pieces of tension gauge for measuring weak tension load and tension gauge for measuring strong tension load are prepared and placed, and two tension gauges Even if you have prepared, it is not possible to exchange both tension gauges in a timely manner when measuring the tension load in which a weak tension load and a strong tension load are continuous and occur at random. However, there is a drawback that it is impossible to accurately measure such a tension load that fluctuates greatly.

Further, if the accuracy of the measurement is disregarded and two tension gauges are prepared as described above to measure a predetermined tension load, at least two force detectors must be prepared and placed, so the cost for that. There was a drawback that said would be very expensive.

[Means and Actions for Solving Problems]

The present invention has been made to solve the above-mentioned problems, in which force detectors having different load measurement ranges are arranged in parallel so that the directions in which loads are applied are different, and rollers are attached to the force detectors. By configuring the tension measuring wire so that it can run on the roller, the measurement width of the load applied to the tension measuring wire can be widened, which is equivalent to the weak load applied to the tension measuring wire. It is an object of the present invention to provide a tension gauge that can measure a strong load continuously and with high accuracy and can be implemented at low cost.

〔Example〕

1 to 3 are explanatory views of an embodiment of the tension gauge according to the present invention.

In the figure, 1 is a case main body, 1a is a lid that closes the opening of the case main body 1, 2 is a force detector using, for example, a strain gauge, and the force detector 2 is a heavy load cell (this embodiment). In the example, the maximum load is 50 kgf max and the overload is 200% ma.
x, using a lever type load cell with an accuracy of ± 1% FS) 2a
And a small load load cell (minimum load 3000 gf max in this embodiment)
2b are installed side by side with a lever type load cell with an overload of 200% max and an accuracy of ± 1% FS. 3 is a roller attached to the heavy load cell 2a, and 4 is a roller attached to the light load cell 2b. 5
Is a stopper arranged in the vicinity of the bending direction of the small load cell 2b, and the stopper 5 is attached so that the degree of proximity to the small load cell 2b can be adjusted. Reference numeral 6 is an idle roller arranged in front of the roller 3 attached to the large load cell 2a, and 7 is an idle roller arranged behind the small load cell 2b. Reference numeral 8 denotes a measuring roller arranged further behind the idle roller 7 for measuring speed and length. One side of the rotating shaft of the measuring roller 8 is projected to the side portion of the case body 1 to perform the measurement. A small rotary encoder 9 for converting the rotation of the roller 8 into a predetermined pulse signal and taking it out is detachably attached (see FIG. 3).

Reference numeral 10 denotes a pressing roller that is in contact with the measuring roller 8, and the pressing roller 10 is attached to the tip of a rotating piece 12 that is urged by a spring 11 toward the measuring roller 8. Reference numeral 13 is a wire (a fishing line is adopted in this embodiment) for tension measurement provided along the idle roller 6, the roller 3, the roller 4, the idle roller 7 and the measuring roller 8. Reference numerals 14 and 15 are guide holes for inserting the wire 13 into and out of the case body 1. Reference numeral 16 is a fixing portion provided on one side of the case body 1, 17 is a tool insertion hole for adjusting the heavy load cell 2a, and 18 is a gauge resistance for load detection (in this embodiment, a bridge type strain gauge resistance 350Ω). , 19 is a circuit for sending a signal detected by the gauge resistor 18 to a tension load processing device described later.

FIG. 4 shows the tension load detection signal of the wire 13 detected by the tension gauge and the speed and length of the wire 13 detected by the rotary encoder 9,
FIG. 3 is a schematic configuration explanatory diagram of a tension load processing device for digital display on an LCD or the like.

In the figure, 20 and 21 are predetermined signal ranges (voltage, etc.) for supplying the signals (tension load signals) detected by the load cells 2a and 2b to the A / D converter 23 in the next stage.
A load cell amplifier for amplifying the signal, and 24 is a signal detected by the rotary encoder 9 (speed of the wire 13,
Length, etc.) and the ON / OFF signal from the start / stop circuit 25 for turning ON / OFF the tension load processing device is supplied to the I / O device 26 of the next stage, within a predetermined signal range (voltage etc.) An encoder amplifier 27 for amplifying is an information processing device (8085 type CPU in this embodiment) which performs predetermined writing and reading based on a command signal supplied from the I / O device 26, and ROM 28, RAM 29. It is composed of. 30 is a battery (6v10AH is used in this embodiment), 31 is a power supply (AC100V.in/in this embodiment)
DC6V.out is used), 32 is a host computer (a handheld computer is used in this embodiment), 33 is an LCD for displaying data, and 34 is the host computer.
A D / A converter for transferring predetermined data to a data processing device other than this device based on the command of 32, 35
Is a storage device (in this embodiment, a 3.5-inch floppy disk is used) for storing predetermined data stored in the RAM 29 of the information processing device 27 based on a command from the host computer 32.

Hereinafter, the operation of the tension gauge according to the present invention will be described based on the above embodiment.

That is, the tension gauge having the above-mentioned configuration is a force detector 2 having a different load measurement range, that is, a heavy load cell (in this embodiment, a maximum load of 50 kgf max, an overload of 200% max and an accuracy of ± 1% FS is used) 2a. And small load cell (minimum load 3000gf max, overload 200% max, accuracy ± 1% in this embodiment)
2b are installed side by side, and both load cells 2
Since the rollers 3 and 4 for changing the direction of the load applied to a and 2b are attached and the wire 13 for tension measurement is attached to each of these rollers 3 and 4 so as to be able to run, The measurement width of the load applied to the wire 13 can be expanded to about twice the measurement width of the conventional tension gauge. Therefore, from a weak load applied to the tension-measuring wire 13 to a considerably strong load, the load can be measured continuously and with high precision, and all the measurements are performed completely automatically. It is very easy to measure and handle, and it can measure accurately and quickly.

Since the stopper 5 for restricting the deviation angle of the small load cell 2b from being excessively deviated is arranged in the vicinity of the bending direction of the small load cell 2b, the small load cell 2b is provided.
It is possible to measure a predetermined tension load in a highly stable and highly accurate manner without adding a load that damages the.

By using the above tension gauge together with the above-mentioned tension load processing device, the detected data can be measured with extremely high accuracy and speed.

〔The invention's effect〕

As described in detail above, according to the present invention, force detectors having different load measurement ranges are arranged side by side in different directions to which a load is applied, and rollers are attached to the force detectors to measure tension of each roller. By configuring the wire to be attached so that it can travel, the measurement width of the load applied to the tension-measuring wire can be widened, and a considerably strong load can be continuously applied from the weak load applied to the tension-measuring wire. In addition, since the measurement can be performed with high accuracy and the configuration is extremely simple, it is possible to provide a tension gauge that is very easy to manufacture and assemble and can be implemented at low cost.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a tension gauge according to the present invention, FIG. 2 is a plan view of the same tension gauge, FIG. 3 is a side view of the same tension gauge, and FIG. It is a schematic explanatory drawing of a tension measuring device. 1 ... Case body, 1a ... Lid, 2 ... Force detector, 2a ... Large load cell, 2b ... Light load cell, 3.4 ... Roller, 5 ... Stopper, 6.7 ... Idle roller, 8 ...
Measuring roller, 9 ... Rotary encoder, 10 ... Roller, 11
... Spring, 12 ... Rotating piece, 13 ... Wire (using fishing line in this embodiment), 14.15 ... Guide hole, 16 ... Fixing part, 17 ...
Tool insertion hole, 18 ... Gauge resistance for load detection, 19 ... Signal transmission circuit.

Claims (4)

[Claims] 1. A force detector having a different load measurement range is arranged in parallel with different operating directions, rollers are attached to the force detector, and a wire for tension measurement is movably attached to each roller. Tension gauge that is characterized. 2. The tension gauge according to claim 1, wherein a lever type load cell is used for the force detector. 3. The force detectors are arranged in parallel so that the force detectors having a large load measuring range are arranged in front of the running direction of the wire for tension measurement. The tension gauge according to claim 1. 4. The bias angle of the force detector having at least a small load measurement range of the force detector is limited by a stopper arranged in the vicinity of the bias direction of the force detector. The tension gauge according to item 1 of the above.