Fishing sinker

Abstract

To provide a fishing sinker which increases the amount of sand stirred up and spouts the stirred up sand dust upward and over a wide range to improve fish-attracting effect. [Solution] A fishing sinker 1 has a main body 3 extending in the longitudinal direction and a plate-shaped sand-raising member 5, which protrudes outward in the lateral direction from the main body 3, and through holes 11, 13, and 15 are formed in the flat area of ​​the sand-raising member 5. A plate-shaped weight member 17 is attached to the sand-raising member 5 at a position furthest from the joint between the sand-raising member 5 and the main body 3.

Description

[Technical field]

[0001] This invention relates to a fishing sinker. [Background technology]

[0002] The number of people fishing from boats to reefs, mountain streams, etc. is increasing year by year, and various fishing equipment is provided according to the characteristics of each type of fishing. For example, when fishing for bottom fish such as flatheads, gobies, and flounders that mainly live on the seabed, or when casting fishing, a method is known in which the fishing rod (rod) is moved up and down (flicked) to tap the bottom of the sea with a sinker several times to blow dust upwards to attract fish, and a method is known in which a sinker with a fin attached to the end of the sinker body is used (see Patent Document 1 below) to move the fishing rod up and down to stir up sand on the seabed with the fin and blow dust upwards to attract fish. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3204715 Summary of the Invention [Problem to be solved by the invention]

[0004] Since the fins are thin, if they are parallel to the seabed, they can scoop up an appropriate amount of sand and raise a dust cloud. However, if the fins are not parallel to the seabed (for example, vertically), the amount of sand that can be stirred up is drastically reduced, making it difficult to spray the dust cloud upwards and over a wide area to attract fish, and the fish-attracting effect is reduced.

[0005] The object of the present invention is to solve such conventional problems and to provide a fishing sinker which increases the amount of sand stirred up and ejects the stirred up sand dust upward and over a wide area, thereby improving the fish-attracting effect. [Means for solving the problem]

[0006] (1) A fishing sinker according to an embodiment for achieving the above-mentioned object has a main body extending in a longitudinal direction and a plate-shaped sand-stirring member, the sand-stirring member protruding outward in a lateral direction from the main body, and a through hole formed in a planar area of ​​the sand-stirring member. (2) In a fishing sinker according to an embodiment for achieving the above-mentioned object, it is preferable that a plurality of through holes are formed so that the total opening area of ​​all the through holes is within the range of 30% to 70% of the area of ​​the planar region of the sand-scooping member. (3) In an embodiment of a fishing sinker for achieving the above object, it is preferable that a plate-shaped sinker member is attached to the sand-scrambling member at a position furthest from the joint between the sand-scrambling member and the main body. (4) In a fishing sinker according to an embodiment for achieving the above-mentioned object, it is preferable that the sand-stirring member is a semicircular plate-shaped member, and that the radius of curvature of the inner edge of the through hole is smaller than the radius of curvature of the outer edge of the sand-stirring member. Effect of the Invention

[0007] According to the present invention, it is possible to provide a fishing sinker that increases the amount of sand stirred up and ejects the stirred up sand dust upward and over a wide area, thereby improving the fish-attracting effect. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram showing a configuration of a fishing sinker according to an embodiment. [Diagram 2] FIG. 13 is a diagram for explaining an example of use of a fishing sinker. [Diagram 3] FIG. 13 is a diagram for explaining a modified example of the sand scraping member. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] A fishing sinker according to an embodiment of the present invention will be described below with reference to Figs. 1 to 3. Fig. 1 is a diagram showing the configuration of the fishing sinker according to the embodiment. Fig. 2 is a diagram for explaining an example of use of the fishing sinker. Fig. 3 is a diagram for explaining a modified example of the sand scooping member.

[0010] As shown in FIG. 1, a fishing sinker 1 according to the embodiment is composed of a main body 3 and a sand scooping member (fin) 5 extending in the longitudinal direction. <Main body 3> The main body 3 has a tapered rod shape with a circular cross section, and is formed so that the diameter of the circular cross section becomes smaller from one end (thickened end) 3b to the other end (thinned end) 3a. The main body 3 is molded by a method (so-called casting) in which a metal such as lead or iron is made into a low-viscosity liquid and poured into a mold at low pressure. The surface region of the main body 3 is then covered with a resin material or the like. In this embodiment, the shape of the main body 3 is described as a tapered rod shape with a circular cross section, but is not limited thereto, and may be a polygonal cross section such as a rectangular cross section or a triangular cross section, or may be a uniform diameter rather than tapered. A ring member 22 for attaching a line 34 to which a fishhook 38 is tied is fixed to the tapered end 3b of the main body 3, and a ring member 21 for attaching a fishing line 33 is fixed to the tapered end 3a of the main body 3. <Sand scraping member 5> The sand scooping member 5 is a semicircular (half-moon) plate-like member, and is joined to the main body 3. The sand scooping member 5 protrudes outward in the short side direction from the surface of the main body 3, and has an arc (semicircular arc, outer periphery) and a base (joint with the main body 3). One end of the base of the sand scooping member 5 is located away from the tapered end 3b of the main body 3 by a length of about 1 / 5 to 1 / 3 of the longitudinal length of the main body 3, and the other end of the base of the sand scooping member 5 is located near the tapered end 3a of the main body 3. Through holes 11, 13, 15 are formed in the semicircular region (flat region) of the sand scraping member 5. In the example of FIG. 1, two through holes 11, 15 are formed on the base side of the semicircular region, and one through hole 13 is formed near the point (hereinafter referred to as the "top") of the outer periphery of the semicircular region that has the longest (largest) length (distance) from the base. The diameters of the through holes 11, 13, 15 are specified so that the ratio of the diameter of the through holes 11, 13, 15 to the length of the base of the semicircular region is 1:4.5. At least the radius of curvature of the inner periphery of the through holes 11, 13, 15 is smaller than the radius of curvature of the outer periphery of the sand scraping member 5. Therefore, as long as this condition is satisfied, the ratio of the diameter of the through holes 11, 13, 15 to the length of the base of the semicircular region may be different from the above ratio. Furthermore, a plate-shaped weight 17 is attached to the top of the semicircular region. The reason for the existence of this weight 17 is that by jerking the fishing rod up and down, the fishing line 33 is moved up and down, causing the sand rake-up member 5 to move like a seesaw, with the center of gravity of the fishing weight 1 as the fulcrum. The sand rake-up member 5 functions as a sand rake-up part that excavates and rakes up muddy sand on the seabed by moving it up and down on the seabed. The number, diameter, and formation position of the through holes are not limited to the example in FIG. 1, as long as the sand on the seabed described later can be stirred up and sufficient sand dust can be generated in the vicinity. For example, if the total area of ​​the semicircular region is A1 and the total opening area of ​​all the through holes is A2, it is preferable that A2 is within the range of 30% to 70% of A1. If the area of ​​A2 occupies most of the total area of ​​the semicircular region, the area in contact with the seabed surface is too small and sand dust is not generated, and if the area of ​​A2 is a small part of the semicircular region, the area in contact with the seabed surface is large and the conditions for generating sand dust are met, but the diameter of the through hole is too small and the sand dust does not rise upward through the through hole. Therefore, as long as the above conditions are met, the number of through holes may be any number, and the diameter of the through holes may be freely set.

[0011] (Example of using fishing weights) An example of how to use the fishing sinker according to the present invention will be described in detail below with reference to Fig. 2. First, the state of the fishing sinker after it reaches the bottom of the water is as shown in Fig. 2(a). At this time, since there is no jerking motion (described later), the sand scooping member 5 is almost stationary, with only the movement due to the ocean current.

[0012] After that, the fishing pole (rod) is raised and lowered, and jerking it up and down causes the movements shown in Figures 2(b) and 2(c) to occur successively. Figure 2(b) shows the state in which the fishing line 33 is lowered until there is no tension, and the vicinity of the top of the sand-raising member 5 of the fishing sinker 1 touches the seabed or is slightly submerged. Figure 2(c) shows the state in which the fishing line 33 is raised until tension is generated, and the sand-raising member 5 of the fishing sinker 1 leaves the seabed. Note that the movement of the fishhook 38 successively alternates between touching the seabed and bouncing upward, and this successive movement causes the fishhook 38 to move vertically and horizontally in a fan shape.

[0013] When the fishing line 33 is lowered until it loses tension, the fishing weight 1 tilts toward the sand-raking member 5 as shown in Figure 2(a), and the outer edge of the sand-raking member 5 comes into contact with the seabed. After that, by constantly moving the fishing rod up and down and giving it a jerking motion, the movements shown in Figures 2(b) and 2(c) occur continuously. At this time, the sand-raking member 5 moves like a seesaw (flapping) with the center of gravity of the fishing weight 1 as the fulcrum, and the mud and sand (mud and sand) 39 on the seabed that has been bumped by the sand-raking member 5 is scooped up upward through the through-holes 11, 13, and 15.

[0014] As described above, by applying a jerking motion, the fishing sinker 1 moves up, down, left and right with its center of gravity as the fulcrum, and the mud and sand 39 scattered by the sand raking member 5 is scattered upward and over a wide area through the through holes 11, 13, 15, so that fish can be attracted to the scattered mud and sand 39. Therefore, the fishing sinker 1 configured as described above can improve the fish-attracting effect.

[0015] In this embodiment, the sand scooping member 5 is semicircular in shape and the through holes 11, 13, 15 are circular in shape. However, other examples include a sand scooping member that is rectangular in shape and has rectangular through holes 51, 53, 55 (see sand scooping member 45 and through holes 51, 53, 55 in Figure 3(a)), or a sand scooping member that is triangular in shape and has triangular through holes 71, 73, 75 (see sand scooping member 65 and through holes 71, 73, 75 in Figure 3(b)).

[0016] In addition, in this embodiment, the number of through holes formed in the sand scraping member 5 is three, but the number is not limited to this. For example, the number of through holes may be five (see through holes 91, 93, 95, 73, and 75 in FIG. 3(c)). The more the number of through holes is increased, the smaller the diameter of the through holes is, and as described above, it is preferable that the total opening area of ​​all the through holes is within the range of 30% to 70% of the surface area of ​​the scraping member, so the number and diameter of the through holes are appropriately designed to satisfy this condition.

[0017] In the present embodiment, the case where one sand scooping member 5 is formed on the main body 3 has been described as an example, but the present invention is not limited to this. For example, sand scooping members 105 and 106 each having a through hole and a weight member formed therein may be joined to the left and right of the short side of the main body 3 (see through holes 111, 112, 113, 114, 115, and 116 and weight members 117 and 118 in FIG. 3(d)).

[0018] Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment and can be modified in various other ways.

[0019] <Effects of the embodiment> (1) The fishing sinker 1 has a main body 3 extending in the longitudinal direction and a plate-shaped sand-stirring member 5, the sand-stirring member 5 protruding outward in the short direction from the main body 3, and through holes 11, 13, and 15 formed in the planar area of ​​the sand-stirring member 5. According to the above-mentioned configuration of the fishing sinker 1, the muddy sand scattered by the up and down movement of the sand-raking member 5 is scattered upward and over a wide area through the through holes 11, 13, and 15, so that the scattered muddy sand can attract fish. Therefore, the fishing sinker 1 having the above-mentioned configuration can improve the fish-attracting effect.

[0020] (2) The through holes 11, 13, 15 are formed so that the total opening area of ​​all the through holes 11, 13, 15 falls within the range of 30% to 70% of the area of ​​the planar region of the sand scooping member 5. Therefore, since the area of ​​the through holes and other areas is well balanced, it is possible to reliably scoop up an appropriate amount of mud and sand and scatter it over a wide area above the through holes.

[0021] (3) A plate-shaped weight member 17 is attached to the sand scooping member 5 at a position furthest from the joint between the sand scooping member 5 and the main body 3. Therefore, the sand-rake-up member 5 moves like a seesaw (flapping) with the center of gravity of the fishing weight 1 as a fulcrum, so that the mud and sand (mud and sand) on the seabed that is bumped up by the sand-rake-up member 5 is reliably ripped upward through the through holes 11, 13, and 15.

[0022] (4) The sand scooping member 5 is a semicircular plate-like member, and the radius of curvature of the inner edges of the through holes 11, 13, and 15 is smaller than the radius of curvature of the outer edges of the sand scooping member 5. Therefore, since the through holes are formed in the sand raking member 5, the mud and sand that passes through the through holes can be reliably scattered upward and over a wide area.

[0023] The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit and scope of the present invention. [Explanation of symbols]

[0024] 1. Fishing sinker 3 Main body 5. Sand scooping member (fin) 11, 13, 15 Through holes 17 Weight member 21, 22 Ring member 33 Line 34 Harris 38 Fishhook 39 Mud and sand (mud and sand on the seabed)

Claims

1. The sand scraper has a main body extending in a longitudinal direction and a plate-shaped sand scraping member. The sand scraping member protrudes outward from the main body in the short side direction, A through hole is formed in the planar area of ​​the sand scraping member. A fishing sinker characterized by the above.

2. The through holes are formed in a plurality of locations, and the total opening area of ​​all the through holes is within a range of 30% to 70% of the area of ​​the planar region of the sand scraping member.

2. The fishing sinker according to claim 1 .

3. A plate-shaped weight member is attached to the sand scraping member at a position farthest from the joint between the sand scraping member and the main body.

3. A fishing sinker according to claim 1 or 2.

4. The sand scraping member is a semicircular plate-shaped member, and the radius of curvature of the inner peripheral edge of the through hole is smaller than the radius of curvature of the outer peripheral edge of the sand scraping member.

3. A fishing sinker according to claim 1 or 2.

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