Line length measuring device and fishing reel equipped with same

Abstract

To provide a yarn length measurement device capable of eliminating input of a length of a wound fishing line, and realizing a yarn length setting method which copes with beaming / snap in a halfway of the fishing line, and a fishing reel comprising the same.SOLUTION: A yarn length measurement device according to an embodiment capable of measuring a length of a fishing line 2 drawn from a spool 3, to which the fishing line 2 can be wound, of a fishing reel which has a reel main body 4 and the spool 3 has: a rotation detection unit capable of detecting a relative rotation number of the spool to the reel main body; a yarn length calculation unit for calculating a length of the fishing line drawn, on the basis of the rotation number detected by the rotation detection unit; and a fishing line information setting unit for setting fishing line information for calculating, by the yarn length calculation unit, the length of the fishing line drawn. The fishing line information setting unit is configured such that a kind of the wound fishing line and a yarn winding diameter (Dmax) of the spool after the fishing line is wound thereto, can be input.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a line length measuring device, and more particularly to a line length measuring device for calculating the line length of a fishing line that has been let out, and a fishing reel equipped with the same. [Background technology]

[0002] 2. Description of the Related Art Conventionally, there is known a technique for detecting the length of a fishing line being released by detecting the number of rotations of a spool.

[0003] Patent Document 1 discloses a fishing reel line length measuring device for measuring the length of fishing line being unwound from or wound onto a spool of a fishing reel, the fishing reel line length measuring device comprising: a rotational position data detection means for detecting rotational position data of the spool; a relationship learning means for learning a first relationship between a predetermined length of the fishing line at approximately the final winding portion when winding the fishing line onto the spool and the detection result of the rotational position data detection means; a relationship calculation means for calculating a second relationship between the line length per unit rotation of the spool and the rotational position data based on the first relationship; and a line length calculation means for calculating the length of the fishing line based on the rotational position data detected by the rotational position data detection means and the second relationship calculated by the relationship calculation means. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 11-225632 Summary of the Invention [Problem to be solved by the invention]

[0005] The diameter of the fishing line wound on the spool decreases as the line is released and increases as the line is wound. If the change in diameter ΔD of the fishing line wound on the spool can be considered constant, the relationship between the number of rotations N of the spool and the length of line released L is L = (AX2 It is known that the relationship is a quadratic function expressed as A + BN (where A and B are predetermined constants).

[0006] The constants A and B are determined when the specifications of the fishing reel, such as the shape of the spool, are decided, and also when the fishing line is wound, such as the thickness of the fishing line, the length of the wound line, whether or not a backing is used, etc. One possible method for calculating the constants A and B is to input and measure the relationship between the line release distance L when winding the line and the number of rotations N of the spool, and then calculate A and B from that, or to allow the user to select from preset values ​​stored in the fishing reel. However, actual measurement is time-consuming, and input is not possible unless the length of the wound line is known, which causes problems such as time-consuming responses when the line breaks or when backing is needed.

[0007] The present invention has been made in consideration of the above circumstances, and its object is to provide a line length measuring device and a fishing reel equipped with the same that realize a line length setting method that does not require input of the length of the wound fishing line and that can deal with bottom winding / high breakage. Other objects of the present invention will become apparent by reading this entire specification. [Means for solving the problem]

[0008] A line length measuring device according to one embodiment of the present invention is a line length measuring device capable of measuring the length of fishing line pulled out from a spool of a fishing reel which has a reel body and a spool around which the fishing line can be wound, and comprises: a rotation detection unit which can detect the relative rotation speed of the spool with respect to the reel body; a line length calculation unit which calculates the length of the pulled-out fishing line from the rotation speed detected by the rotation detection unit; and a fishing line information setting unit which sets fishing line information for calculation of the length of the pulled-out fishing line by the line length calculation unit, and the fishing line information setting unit is configured to allow input of the type of fishing line to be wound and the line winding diameter (Dmax) of the spool after the fishing line to be wound is wound.

[0009] In the line length measuring device according to one embodiment of the present invention, the type of fishing line to be wound is at least one of the line size, the poundage, or the thickness (d) of the fishing line.

[0010] In one embodiment of the line length measuring device according to the present invention, the fishing line information setting unit is configured to display, when the type of fishing line is set, the relationship between the line winding diameter (Dmax) of the spool after the fishing line to be wound is wound and the line length (Lmax) of the wound fishing line after the fishing line to be wound is wound.

[0011] A fishing reel according to one embodiment of the present invention is configured to include any one of the line length measuring devices described above.

[0012] above In the fishing reel, the spool is provided with a mark for determining the line winding diameter (Dmax) of the spool after the fishing line is wound thereon. [Effects of the Invention]

[0013] According to the above embodiment, it is possible to provide a line length measuring device and a fishing reel equipped with the same that can calculate the length of the fishing line being pulled out with little error in practical use by utilizing information on the spool diameter and type of fishing line, without the need to input the length of the fishing line to be wound or to measure the number of rotations during winding. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a diagram illustrating a basic configuration of a fishing reel according to an embodiment of the present invention. [Figure 2] 1 is a diagram illustrating a method for calculating the length of a fishing line (line length) in a line length measuring device according to an embodiment of the present invention. FIG. [Figure 3] 1 is a conceptual diagram of a spool of a fishing reel according to an embodiment of the present invention, viewed from the axial direction. FIG. [Figure 4] 1 is a diagram showing the relationship between the length of a fishing line and the amount of rotation of a spool in a line length measuring device according to an embodiment of the present invention. FIG. [Figure 5] FIG. 1 is a diagram showing an input form in a yarn length measuring device according to an embodiment of the present invention. [Figure 6] FIG. 2 is a diagram illustrating scales (marks) on a spool of a fishing reel according to one embodiment of the present invention. [Figure 7] FIG. 1 is a diagram showing a model of a line being wound onto a spool of a fishing reel according to an embodiment of the present invention. [Figure 8] FIG. 10 is a diagram showing an input form after changing the type of fishing line in the line length measuring device according to one embodiment of the present invention. [Figure 9] FIG. 10 is a diagram showing the relationship between the spool rotation speed and the drawn-out line length for each type of line. [Figure 10] FIG. 10 is a diagram showing another example of an input form in the yarn length measuring device according to one embodiment of the present invention. [Figure 11] FIG. 10 is a diagram showing another example of an input form in the yarn length measuring device according to one embodiment of the present invention. [Figure 12] 1 is a diagram illustrating a method for calculating the unwound length of a fishing line in a line length measuring device according to an embodiment of the present invention. FIG. [Figure 13] 1A is a diagram showing a line diameter measuring gauge according to one embodiment of the present invention, and FIG. 1B is a diagram explaining a method for calculating the unwound line length of a fishing line in a line length measuring device according to one embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, embodiments of a line length measuring device and a fishing reel equipped with the same according to the present invention will be described in detail with reference to the accompanying drawings. Components common to multiple drawings are designated by the same reference numerals throughout the multiple drawings. Please note that the drawings are not necessarily drawn to scale for the sake of convenience.

[0016] First, the basic configuration of a fishing reel according to one embodiment of the present invention will be described with reference to Figure 1. As shown in Figure 1, a fishing reel 1 according to one embodiment of the present invention is configured to include at least a spool 3 around which fishing line 2 can be wound, a reel body 4 that rotatably supports the spool 3, and an operating unit (operating means) 5 that rotates the spool 3. The fishing reel 1 also has, as electrical components, a detection unit (rotation sensor) 6 that detects the amount of rotation of the spool 3 relative to the reel body 4, a control unit (control means) 7 that processes the detection results of the detection unit (rotation sensor) 6, and an output unit (output means) 8 that outputs the results processed by the control unit (control means) 7. The control unit (control means) 7 includes a line length calculation unit, which will be described later, and the output unit (output means) 8 is configured to include a fishing line information setting unit, which will be described later.

[0017] In the fishing reel 1 according to one embodiment of the present invention, the control unit 7 does not necessarily have to be a single unit, and may be configured with multiple control units. In this case, for example, a first control unit may be disposed within the fishing reel 1, and a second control unit may be disposed in an external device (equipment) such as a smartphone, and communication may be established between the respective control units as needed, allowing the second control unit to perform part of the processing. This has the advantage of reducing the calculation cost of the first control unit. Furthermore, the second control unit of the external device (equipment) may be configured to include the line length calculation unit. In this case, a line length calculation and management system including the fishing reel and the external device (equipment) is configured (details will be described later).

[0018] Here, the fishing reel 1 is called a dual-bearing reel, and is a type in which the fishing line is wound by rotating the spool. When a user operates an operating unit (operating means) 5 such as a handle, power is transmitted from the operating unit (operating means) 5 via gears or the like, causing the spool 3 to rotate relative to the reel body 4. This allows the fishing line 2 guided into the reel body 4 to be wound onto the spool 3. The power source at this time may be manual, or may be a motor or prime mover. The fishing reel 1 may also be equipped with a clutch, drag, or the like. By changing the power transmission state of the spool 3 using the clutch, drag, or the like, the spool 3 can be rotated in the release direction, thereby releasing the fishing line 2 wound on the spool 3.

[0019] The detection unit (rotation sensor) 6 comprises a detecting means (not shown) such as an optical sensor or magnetic sensor, and a detected means (not shown) such as a reflector, light-shielding plate, or magnet. A non-contact type detection unit (detecting means) is desirable to avoid the generation of sliding resistance on the spool 3, but this is not a limitation. By locating the detection unit (detecting means) on the reel body 4 side and the detected means (detected means) on the spool 3 side, it becomes possible to easily supply power to the detection unit (detecting means). The detection unit (rotation sensor) 6 may be an incremental type rotation sensor that emits a signal corresponding to the amount of relative rotation of the spool 3, or an absolute type rotation sensor that emits a signal corresponding to the amount of absolute rotation of the spool 3. However, an incremental type is preferable for calculating the length of the fishing line because it has a simpler configuration.

[0020] The control unit (control means) 7 detects (counts) the rotation signal of the spool 3 from the detection unit (rotation sensor) 6, and calculates the length of the fishing line (line length) wound onto or released from the spool 3. The calculation method will be described in detail later.

[0021] The output unit (output means) 8 outputs the calculated fishing line length (line length). In the present invention, the output unit (output means) 8 is a general term for means for notifying the line length for the purpose of utilizing the fishing line length (line length). In other words, the output unit (output means) 8 may include, but is not limited to, display means such as an LED or LCD, sound means such as a speaker or earphones, storage means such as internal memory or removable media, and wired or wireless communication means for transmitting to external devices such as smartphones or fish finders. Further details of the output unit (output means) 8 are omitted.

[0022] The control unit 7 and output unit 8 may be built into the reel 1 as described above, or some of their functions may be implemented in an external device (equipment) such as a smartphone. A line length calculation and management system according to one embodiment of the present invention includes a fishing reel and an external device (equipment) such as a smartphone that is configured to communicate with the fishing reel. The fishing reel has a first control unit and the external device (equipment) has a second control unit. The first control unit detects and counts the rotation signal of the spool 3 and transmits the results to the second control unit via a known communication means or the like. The second control unit calculates the line length based on the received spool rotation signal using a calculation method described below. The calculated line length is stored in a storage unit (means) provided in the external device (equipment) and can be output by a display unit (means). In this way, the computational resources required for the first control unit can be reduced, resulting in a smaller, less expensive, and less power-consuming first control unit.

[0023] Furthermore, in the line length calculation and management system according to one embodiment of the present invention, it is preferable to enable the use of a setting mode (described later) within the external device (equipment). This eliminates the need to provide an additional input means, such as a setting button, within the fishing reel, thereby enabling the reel body to be made smaller and less expensive. Furthermore, the setting values ​​entered in the setting mode within the external device (equipment) may be shared with the fishing reel via a known communication means. This allows, for example, even when multiple external devices (equipment) communicate with the fishing reel, the entered setting values ​​can be shared with all external devices (equipment) via the fishing reel. The division of roles between the first and second control units is not limited to the above method. Similar effects can be achieved by a method in which the first control unit performs all operations up to the calculation of line length and the second control unit only performs output, or a method in which the first control unit performs the setting mode and the second control unit calculates and outputs line length.

[0024] In the above description, a dual-bearing reel is used as an example of fishing reel 1, but the invention is not limited to dual-bearing reels and can also be applied to a type of fishing reel known as a spinning reel, in which a rotor holding a line guide rotates around a fixed spool to wind the line onto the spool. In the case of a spinning reel, the relative rotation between the spool and the rotor can be detected (measured) to calculate the length of the wound fishing line, thereby achieving the same effect.

[0025] Next, a method for calculating the length of a fishing line (line length) in a line length measuring device according to an embodiment of the present invention will be described with reference to Fig. 2. Generally, when using a fishing reel, the length of the fishing line is calculated by the following method. Thread length It is convenient to be able to measure (Y). Because the diameter of the fishing line wound on the spool changes as it is unwound or reeled in, this unwound distance (Y) is not necessarily proportional to the amount of rotation X of the spool, and an appropriate conversion is required.

[0026] If the rate of change of the diameter of the fishing line spool can be considered constant, this conversion formula Y=f(x) can be expressed as Y=AX as described below. 2+BX (where A and B are predetermined constants). The values ​​of the constants A and B can vary depending on the shape of the spool, the thickness of the fishing line used, and the reel length of the fishing line. Therefore, while these constants must be determined for a typical fishing reel, a fishing reel according to one embodiment of the present invention has a setting mode (S) for determining the two constants in the conversion formula Y = f(x), as shown in FIG. 2. In the setting mode (S), two types of information that change depending on the user's usage conditions are input (S1), thereby determining the unknown constants A and B in the conversion formula (S2). As will be described later, in one embodiment of the present invention, the two types of information are, for example, information about the line thickness and information about the spool thickness after the fishing line is reeled in. Therefore, the setting mode (S) does not require the use of information from the detection unit (rotation sensor) 6. When the fishing reel is started to be used and the measurement mode (T) is entered, the amount of rotation (number of rotations) (X) of the spool from the distance 0 m state (T1) is constantly monitored by the detection unit (rotation sensor) 6 (T2), and the amount of fishing line drawn out is calculated using the conversion formula Y = f(x) determined in the setting mode. Thread length (Y) is calculated (T3).

[0027] Next, the amount of rotation of the spool (X) and the amount of fishing line drawn out Thread length The conversion formula for (Y), Y=f(x), will be further explained. The variables for when winding fishing line and when using the fishing reel are defined as follows. Here, when winding fishing line refers to the preparation state before starting to use the fishing reel, in which the line is wound onto the spool and fishing line information, which will be described later, is set (corresponding to the setting mode (S) state of the fishing reel). In addition, when using the fishing reel refers to the state after the preparation state before starting to use the fishing reel has ended and the start of use of the fishing reel and the state thereafter (corresponding to the measurement mode (T) state of the fishing reel). When winding the line: Wind a fishing line of uniform thickness onto a spool with an empty spool diameter of D0 (m). JPEG0007760484000001.jpg29156 When in use: From the final state above, pull out the fishing line Y (m). JPEG0007760484000002.jpg29156

[0028] These will be further explained with reference to Figures 3 and 4. Figure 3 shows a conceptual diagram of a fishing reel according to one embodiment of the present invention as seen from the axial direction of a spool, and Figure 4 is a graph showing the relationship between line length and the amount of rotation of the spool. As mentioned above, when the fishing reel is in use, the amount of rotation (X) of the spool from the start of use is measured, and the amount of fishing line pulled out is calculated by using the conversion formula Y = f(X) described later. Thread length (Y) can be obtained.

[0029] If the change in the diameter of the line wound around the spool once is ΔD (m), and ΔD (m) is considered to be a constant value when winding the line and when in use, the following relationship holds: (Thread length) = π x (average thread diameter) x (amount of rotation) L=πn(D0+D) / 2 Equation (1) Y=πX(Dmax+D) / 2 Equation (2) Furthermore, since the change in the bobbin diameter ΔD (m) is constant, the following relationship holds: D=D0+ΔDn Equation (3) D=Dmax-ΔDX Formula (4) ΔD=(Dmax-D0) / Nmax Formula (5) Then, by substituting equations (3) and (4) into equations (1) and (2), the following holds true. L=πnD0+π / 2×ΔD×n 2 Formula (6) Y=πXDmax-π / 2×ΔD×X 2 Formula (7)

[0030] Furthermore, if we substitute the final states Nmax, Dmax, and Lmax into equation (1), we get Lmax=πNmax(D0+Dmax) / 2 Equation (8) This becomes: From equations (5) and (8), ΔD can be expressed as follows using D0, Lmax, and Nmax: ΔD=2 / (πNmax^2)(Lmax-π D0 Nmax) Equation (9) Then, by substituting equation (9) into equation (6), we obtain the following: L=πnD0 +(n / Nmax)^2 (Lmax-π D0 Nmax) Equation (10) Also, the relationship between L and Y, and between n and X is L+Y=Lmax Equation (11) n+X=Nmax Equation (12) By rearranging equations (10), (11), and (12), the following equation (13) is obtained. Y=X / Nmax(2Lmax-πD0Nmax)-(X / Nmax) 2 (Lmax-πD0Nmax) Equation (13)

[0031] In a conventional fishing reel, the amount of fishing line pulled out, Y, was calculated by measuring the amount of rotation of the spool using equation (13). The value of D0 is a spool-specific value that can be set at the factory. The user inputs the length of line to be wound, Lmax, when winding the line, and the amount of rotation, Nmax, required at that time is measured. The values ​​of D0, Lmax, and Nmax are stored in a microcomputer, and the value of the amount of rotation, X, of the spool is measured sequentially, allowing the value of the amount of line pulled out, Y, to be calculated.

[0032] In contrast, a fishing reel equipped with a line length measuring device according to one embodiment of the present invention can calculate line length using the above-mentioned equation (7). The user sets the line winding diameter (Dmax), which is the final state after the line winding operation, and the type of line to be used in the fishing line information setting unit (described later). As an example, an input form such as the one shown in FIG. 5 is prepared. The value of the line winding diameter (Dmax) can be easily determined by eye by inputting the ratio of the line winding diameter to the maximum line winding diameter of the spool. For example, if the maximum line winding diameter of the spool is 36 mm and the line is wound up to 90% of the maximum line winding diameter, the control unit 7 can calculate Dmax = 36 (mm) × 90% = 32.4 mm. In this case, if the input form displays the line winding diameter according to the input conditions as shown in the figure, a more accurate value can be determined. Alternatively, Dmax can be calculated after inputting Lmax. That is, the line length unwound in a predetermined rotation (e.g., one rotation of the spool) can be measured and then Dmax can be calculated from that.

[0033] Furthermore, if a scale (mark) is provided on the spool as shown in Figure 6, it will be easier to determine the Dmax value. In this case, it is also possible to provide scales (marks) at different intervals on the left and right sides of the spool as shown in Figure 6. This allows the intervals between each scale (mark) to be increased, improving visibility while maintaining accuracy.

[0034] Furthermore, the value of ΔD can be determined by setting the type of fishing line. A model of winding a line onto a spool of a fishing reel according to one embodiment of the present invention will be described with reference to Figure 7. Figure 7 is a cross-sectional view that assumes a case in which a fishing line with a line diameter dl (m) is wound onto a spool with a rectangular cross-section and a width b (m) so that the fishing line is uniformly arranged (distributed) in each layer. Based on this model, the line winding diameter D increases by dl (m) every time b / dl turns are wound, so ΔD=dl 2 / b formula (14) That is, ΔD is proportional to the square of the diameter of the line and proportional to the cross-sectional area of ​​the line.

[0035] The actual value of ΔD changes due to changes in the elongation of the fishing line caused by tension fluctuations, and the resulting changes in cross-sectional area, shape, and winding state, which affect the space factor. Furthermore, the cross-sectional shape of a spool is often not rectangular but roughly trapezoidal, but if fishing line of the same thickness is wound with a tension within a specified range, the value of ΔD can be considered constant, and it has been found that calculating the payout amount Y based on such a model provides sufficient accuracy for practical use.

[0036] Fishing line types are often conventionally expressed by a line size proportional to the line's cross-sectional area or by a strength (pounds) proportional to the line's breaking force. The breaking force of a line is proportional to its cross-sectional area if the line is made of the same material. Furthermore, once the material of the line is determined, the space factor of that material when wound around a spool is generally determined to be a constant value. In other words, the value of ΔD is nearly proportional to the line size and strength, and is uniquely determined once the type of fishing line (size, material) is determined. If this relationship is calculated in advance, the user can determine the value of ΔD simply by inputting the type of fishing line. In this way, the line length measuring device according to one embodiment of the present invention allows the user to input the previously mentioned reel diameter (Dmax) and line type, thereby determining the unknown constant in equation (7) above. The line length calculation unit, described below, can then calculate the unwound line length Y at any time.

[0037] Once the type of fishing line and the value of ΔD are determined, the line length of the fishing line can be calculated from equations (1) and (3). The relationship between the winding diameter Dmax and the line length Lmax is determined. As shown in Figure 5, it is advisable to display this relationship on the input form. In this way, if the user can determine the line length Lmax of the fishing line wound around the reel, they can input the value of Dmax more accurately. Also, if a line breakage (break at the end of the line) occurs during use, it is necessary to reset Dmax in order to maintain the accuracy of the calculation of the drawn-out line length Y. However, in such cases, it is often easier to determine the length of the broken line than the change in Dmax, making it easier to set a more accurate value. That is, with a line length measuring device according to one embodiment of the present invention, if the line length Lmax of the fishing line can be input instead of the wound line diameter Dmax, the value of the wound line diameter Dmax can be calculated. An example of the input form after changing the type of fishing line is shown in FIG. 8. Also, as an example, FIG. 9 shows two types of fishing line (No. 2 and No. 3) with Dmax=3, 6 mm The relationship between the drawn-out thread length Y [m] and the number of drawing rotations x [times], and the thread winding diameter D [ mThis shows the relationship between the number of withdrawal rotations x [times] and the number of withdrawal rotations x [times]. For each fishing line, the value of ΔD in the above-mentioned equations (4) and (7) differs by 1.5 times. Therefore, in the relationship showing the spool diameter D, the intercept of the withdrawal line length Y is the same, but the slope differs by 1.5 times. In the relationship with the withdrawal line length Y, the slope near x = 0 is the same, and the change in curvature differs as the number of withdrawal rotations x increases.

[0038] Another method for inputting the reel diameter (Dmax) in the line length measuring device according to one embodiment of the present invention will now be described. To obtain the reel diameter (Dmax), in addition to directly detecting (measuring) the spool diameter, the length of fishing line that is released when the spool is rotated a predetermined number of times (e.g., one full rotation) may be detected (measured). Using FIG. 12 , the method for inputting the reel diameter (Dmax) in the line length measuring device according to one embodiment of the present invention will be described in detail. The spool 3 and reel body 4 of the fishing reel 1 according to one embodiment of the present invention each have a mark. The user rotates the spool one rotation using these marks as a guide. The reel length at that time is detected (measured) using a ruler or the like, and this value is entered as the setting value. For example, if the reel length is 10 cm, the spool diameter Dmax at that time can be calculated as 10 / π ≈ 3.18 cm.

[0039] As another example, an example using a gauge will be described with reference to FIG. 13. In this embodiment, a line diameter measurement gauge 200 as shown in FIG. 13(a) is used. The line diameter measurement gauge 200 is roughly an N-sided polygon (a hexagon in this example) and has a line abutment portion 201 and a reel abutment portion 202 on each side. All N reel abutment portions 202 have the same shape and are used by abutting the reel abutment portions 202 at predetermined positions on the reel as shown in FIG. 13(b). The N line abutment portions 201 are formed so that their distances from the center vary slightly, and each has the line winding diameter (Dmax) (expressed as a percentage in this embodiment) written on it. The user simply abuts each line abutment portion 201 against the outer surface of the fishing line wound around the fishing reel 1, finds the point where the reel abutment portion 202 and the line abutment portion 201 abut the fishing reel 1 at approximately the same time, and inputs that value as the setting value.

[0040] A line length measuring device according to one embodiment of the present invention is a line length measuring device capable of measuring the length of fishing line pulled out from a spool of a fishing reel which has a reel body and a spool around which the fishing line can be wound, and comprises: a rotation detection unit which can detect the relative rotation speed of the spool with respect to the reel body; a line length calculation unit which calculates the length of the pulled-out fishing line from the rotation speed detected by the rotation detection unit; and a fishing line information setting unit which sets fishing line information for calculation of the length of the pulled-out fishing line by the line length calculation unit, and the fishing line information setting unit is configured to allow input of the type of fishing line to be wound and the line winding diameter (Dmax) of the spool after the fishing line to be wound is wound around the spool.

[0041] According to one embodiment of the invention, there is no need to input the length of the fishing line to be wound, nor is there any need to measure the number of rotations during winding. Instead, information on the spool diameter and type of fishing line can be used to provide a line length measuring device that can calculate the length of the drawn-out fishing line with minimal error in practical applications.

[0042] In the line length measuring device according to one embodiment of the present invention, the type of fishing line to be wound is at least one of the line size, the poundage, or the thickness (d) of the fishing line.

[0043] In one embodiment of the line length measuring device according to the present invention, the fishing line information setting unit is configured to display, when the type of fishing line is set, the relationship between the line winding diameter (Dmax) of the spool after the fishing line has been wound and the line length (Lmax) of the wound fishing line after the fishing line has been wound.

[0044] A fishing reel according to one embodiment of the present invention is configured to include any one of the line length measuring devices described above.

[0045] According to a fishing reel according to one embodiment of the present invention, it is possible to provide a fishing reel equipped with a line length measuring device that can calculate the length of the fishing line being pulled out with little error in practical use by utilizing information on the spool diameter and type of fishing line, without the need to input the length of the fishing line to be wound or to measure the number of rotations during winding.

[0046] In a fishing reel according to one embodiment of the present invention, the spool is provided with a scale (mark) for determining the line winding diameter (Dmax) of the spool after the fishing line is wound thereon.

[0047] The technical effects achieved by a line length measuring device and a fishing reel equipped with the same according to one embodiment of the present invention will now be described in more detail. As mentioned above, conventional methods require the input of values ​​for Nmax and Lmax. This requires the user to know the line length Lmax of the wound fishing line. However, it can be practically difficult for the user to know the line length Lmax, for example, when winding a uniform, colorless fishing line. Furthermore, conventional fishing reels require a setting mode to detect (measure) the amount of spool rotation Nmax required for winding the fishing line, but this process can be cumbersome. Specifically, the following procedure must be followed to input the amount of spool rotation Nmax. Enter setting mode → Start input operation → Tie the fishing line to the spool and operate the operating means to wind it onto the spool → End setting operation However, there is a problem in that it is difficult to reset the settings during this series of operations if the setting operation fails or if the line breaks and it becomes necessary to reset the settings while fishing.

[0048] In contrast, with a line length measuring device and a fishing reel equipped therewith according to one embodiment of the present invention, it is sufficient to input the spool's final wound diameter (Dmax) after winding the line and the type of fishing line wound around it. There is no need to input the line length (Lmax) or spool rotation amount (Nmax) in the setting mode, making it easy to determine the final state by eyeballing. This significantly simplifies the user's work. Furthermore, if the fishing line breaks while the user is fishing and a reset becomes necessary, the user can easily and reliably reset the line on the spot as long as they know the length of the broken line. Furthermore, with conventional methods, if a different line is wound around the inner circumference of the fishing line being used during use, known as back winding, the values ​​of D0 and Nmax change, requiring special work. However, with a line length measuring device and a fishing reel equipped therewith according to one embodiment of the present invention, the final wound diameter (Dmax) is input, and information on D0 is not required. Therefore, the same input method can be used regardless of whether or not a back winding is present.

[0049] Another advantage of the line length measuring device according to one embodiment of the present invention and a fishing reel equipped with the same is that, as long as the value of the line winding diameter (Dmax) is correct, large errors are unlikely to occur in the actual range of use. Figure 9 shows the relationship between the spool rotation speed (X) and the unwound line length (Y) for each type of line. When the spool rotation speed (X) is small, the influence of the first-order term of the spool rotation speed (X) in the previously described equation (7) is significant, while the influence of the previously described equation (2) increases as the spool rotation speed (X) increases. In general, when using a fishing reel, the outer periphery of the wound fishing line is used more frequently. In other words, the area where the spool rotation speed (X) is high is often considered a reserve in case of trouble such as line breakage, while the area where the spool rotation speed (X) is low is used more frequently. Because the coefficient of the first-order term, which has a large influence in this range, is the line winding diameter (Dmax), the accuracy of inputting the line winding diameter (Dmax) almost directly affects the accuracy of calculating the unwound line length (Y). For example, if the maximum diameter of the spool is 36 mm, the gap between the wound line and the outer edge of the spool can be determined relatively easily by eye. If the error is 1 mm, the calculation accuracy of the unwound line length (Y) is 1 / 36, which is approximately 3%, making it easy to input and providing sufficient calculation accuracy for practical use.

[0050] In the above description, the unwound line length (Y) is calculated as a quadratic expression of the spool rotation speed (X). However, the line length measuring device and fishing reel equipped therewith according to one embodiment of the present invention are not limited to this. Other conversion formulas may be used depending on the shape of the spool. For example, if the spool has a small ratio between the minimum and maximum diameters, such as a so-called shallow groove spool, the quadratic term in the previously described equation (7) has a relatively small effect, so approximating it with a linear formula often provides sufficient accuracy for practical use. Furthermore, if the cross-sectional shape of the spool is closer to a triangle than a rectangle, ΔD cannot be considered constant, so sufficient accuracy for practical use may not be achieved unless the unwound line length (Y) is approximated with a cubic or higher expression of the spool rotation speed (X). In either case, the relationship between the spool rotation speed (X) and the unwound line length (Y) can be determined by inputting the reel diameter (Dmax) and the type of line, as in the previously described method, and similar effects can be achieved.

[0051] A line length calculation and management system according to one embodiment of the present invention includes a fishing reel and an external device configured to be able to communicate with the fishing reel, the fishing reel including a reel body, a spool around which a fishing line can be wound, a rotation detection unit capable of detecting the number of rotations of the spool relative to the reel body, and a line length calculation unit. Pull The system comprises a fishing line information setting unit that sets fishing line information for calculating the length of the reeled fishing line, and a transmitting unit that transmits the number of rotations detected by the rotation detection unit and the fishing line information to an external device, wherein the fishing line information setting unit is configured to be able to input the type of fishing line to be wound and the line winding diameter (Dmax) of the spool after the fishing line has been wound, and the external device is configured to receive the number of rotations detected by the rotation detection unit and the fishing line information from the fishing reel, a line length calculation unit that calculates the length of the reeled fishing line based on the number of rotations and the fishing line information, and a display unit that outputs the calculated line length, and thus the line length calculation and management system is configured to enable the length of the fishing line reeled from the spool of the fishing reel to be calculated and output by an external device.

[0052] Next, other examples of input forms in a line length measuring device according to one embodiment of the present invention will be described with reference to Figs. 10 and 11. As shown in Fig. 10, illustrations or photographs of spools corresponding to the final line wound diameter may be displayed so that the user can select one. This allows the user to intuitively grasp and input the value of the line wound diameter (Dmax). Furthermore, as shown in Fig. 11, the user may be allowed to input the value of the line wound diameter (Dmax). This allows the value of the line wound diameter (Dmax) to be input precisely and easily, thereby improving the display accuracy of the unwound line length (Y).

[0053] The dimensions, materials, and arrangement of each component described in this specification are not limited to those explicitly described in the embodiments, and each component can be modified to have any dimensions, materials, and arrangement that can be included in the scope of the present invention. Furthermore, components not explicitly described in this specification can be added to the described embodiments, and some of the components described in each embodiment can be omitted. [Explanation of symbols]

[0054] 1 fishing reel 2. Fishing line 3 spools 4 Reel body 5 Operation unit (operation means) 6. Detector (rotation sensor) 7 Control section (control means) 8. Output section (output means) 10. Yarn length measuring device 200 Yarn diameter measurement gauge 201 Thread stopper 202 Reel stopper

Claims

1. A fishing reel includes a reel body and a spool around which a fishing line can be wound. The fishing line length measuring device is capable of measuring the length of the fishing line unwound from the spool, a rotation detection unit capable of detecting the number of rotations of the spool relative to the reel body; a line length calculation unit that calculates the length of the fishing line that has been pulled out from the number of rotations detected by the rotation detection unit; a fishing line information setting unit that sets fishing line information for the line length calculation unit to calculate the line length of the reeled out fishing line, The fishing line information setting unit is configured to allow input of the type of fishing line to be wound and the line winding diameter (Dmax) of the fishing line to be wound on the spool, The fishing line length measuring device is characterized in that the fishing line information setting unit is configured to display the relationship between the line winding diameter (Dmax) of the spool after the fishing line to be wound is wound and the line length (Lmax) of the wound fishing line after the fishing line to be wound is wound, when the type of fishing line is set.

2. 2. The line length measuring device according to claim 1, wherein the type of fishing line to be wound is at least one of the size of the fishing line, the poundage of the fishing line, and the thickness (d) of the fishing line.

3. A fishing reel equipped with the line length measuring device according to claim 1 or 2.

4. 4. The fishing reel according to claim 3, wherein the spool is provided with a mark for determining the line winding diameter (Dmax) of the spool after the fishing line is wound thereon.

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