JP2010233534A - Sinker for fishing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sinker for fishing, with no occurrence of coming off and falling down even if intensely struck against a rock or the like, easy to replace and exchange, and also capable of not only being fixed on the rear of a fishline but also of being mobilely attached. <P>SOLUTION: The sinker for fishing is such that: a cylindrical body having a hole 10 at the center includes: a metallic core sinker body 1 with a cut groove 12 from the outer circumferential surface of the cylindrical body to the hole 10; and such a resin or rubber shaft body (member) 2 that the shaft outer diameter D1 of the main part 2a is larger than that D2 of the hole 10, and over the whole region in the axial direction of the main part 2a, a notched groove 20 is radially provided from the outer circumferential surface 21 of the main part to a point deep beyond the axis CT of the main part, the outer circumferential surface 21 of the main part is pressed to allow the wall surfaces of the notched groove 20 to stand closely against each other or allow them to be butted on each other through springy deformation to decrease the shaft outer diameter of the main part 2a to ensure the main part 2a to be inserted into the hole 10, and also the core sinker body 1 locks the shaft member 2 owing to the springily restorative force of the main part 2a inserted above. Further, a hollow 22 is formed at the groove bottom portion 20b of the notched groove 20 of the shaft member 2 locked on the core sinker body 1. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a fishing weight attached to a fishing line.

  Currently, lead or lead alloys are often used as materials for fishing weights. A small weight (0.5 to 3.0 g) in which a crack is formed is also called “crushing”. The weight bites the crack using the property of lead and is fixed to the fishing line by pressure. However, once installed, it was difficult to replace, but the fixed weight slipped. Thus, several inventions that solve this problem have been proposed (for example, Patent Document 1).

Utility model registration No. 3044405 gazette

  However, the invention of Patent Document 1 is a “fishing coat with a fishing weight having a structure in which a raw rubber and a synthetic rubber coating are applied to a round, elliptical, and corrugated weighting weight”. There was a problem. Soft lead or lead alloy is used because it is a weight originally used by being crushed. There was a risk of the line popping out from the crack in the weight body due to the law of inertia when throwing a carp fishing. Furthermore, when hitting a rock or the like, there is a problem that a weight made of a soft material is deformed by an impact and falls off.

On the other hand, when the weight exceeds 3.0 g, the lead opening and closing becomes stiff, so it becomes a hollow-through type. In this case, the weight must be replaced by cutting the fishing line. For this reason, for example, a countermeasure product as shown in FIG. 9 has been developed. A combination of a rubber pipe 92 and a weight main body 91. If the rubber pipe 92 is passed through a fishing line in advance, a slit 91b is formed in the weight main body 91, and it is an intermediate-type invention that can be freely replaced.
However, the weight body was easily dropped during use. Since the rubber pipe 92 has a cylindrical shape, it is difficult to compress and deform to reduce the outer diameter of the cylinder, and the rubber pipe 92 inevitably falls off even when the rubber pipe 92 is inserted into the weight body 91. When the rubber pipe 92 fell off when hitting a rock or the like, the weight main body 91 fell off the line through the slit 91b. Further, when the weight main body 91 made of lead is crushed by hitting a rock or the like, the through hole 91a provided in the lead main body is also crushed and becomes small, and there is a problem that the rubber pipe 92 cannot enter.
In addition, to date, no weight has been found that can be easily switched between retrofitting and retrofitting on the line.

  The present invention solves the above-mentioned problems, and is a fishing weight that does not fall off even if it hits against rocks and the like, is easy to replace and replace, and can be mounted not only on the line but also on the back. The purpose is to provide.

In order to achieve the above object, the gist of the invention described in claim 1 is that a metal core weight body in which a split groove extending from the outer peripheral surface to the cylindrical hole is formed in a cylindrical body having a cylindrical hole in the center, A resin-made or rubber-made shaft-like body having an outer diameter of the main portion larger than the hole diameter of the cylindrical hole and a notch groove in the radial direction from the outer peripheral surface of the main portion in the entire axial direction of the main portion. Provided up to a deep point beyond the axis of the main part, pressing the outer peripheral surface of the main part to bring the opposing wall surfaces of the notch groove into close proximity or in contact with each other by elastic deformation, thereby reducing the shaft outer diameter of the main part And a shaft member that is locked to the core weight by the elastic restoring force of the inserted main portion, and further locked to the core weight. In the fishing weight, a space is formed in a groove bottom portion of the cutout groove of the shaft member.
A fishing weight according to a second aspect of the present invention is the fishing weight according to the first aspect, further comprising a main weight body in which a through hole is formed in a spherical body made of lead or lead alloy, and a crack extending from the spherical surface to the through hole is provided. A metal material harder than the main weight body is used for the core weight body, and the core weight body is inserted into the through-hole so that the crack and the split groove are aligned with each other. The core weight body is fixedly integrated with each other. A fishing weight according to a third aspect of the present invention is the fishing weight according to the first or second aspect, wherein the knob auxiliary portion is extended to the main portion and has an axial diameter larger than that of the main portion. It is characterized by being arranged outside the core weight body by insertion into a cylindrical hole. A fishing weight according to a fourth aspect of the present invention is the fishing weight according to the third aspect, characterized in that a plurality of protrusion portions are formed around the outer peripheral surface of the main portion at intervals.

  The fishing weight according to the present invention can be freely selected for retrofitting and free-moving for mounting on the line, and can be easily performed. Moreover, the fishing weight can be dropped even if it hits against rocks and receives an impact. It has a great effect such as not having anything.

It is the whole fishing weight perspective view of the present invention. FIG. 2 is a perspective view in which the shaft member of FIG. 1 is inserted into the weight body, where (a) is a retrofit and the fishing weight is attached to the line, and (b) is a postfix and the fishing weight is attached to the line. FIG. (A) and (B) are a plan view and a front view of the weight body, and (C) and (D) are a plan view and a front view of the shaft member. (A) is a cross-sectional view of FIG. 2 (b), and (b) is a cross-sectional view of FIG. 2 (a). FIG. 3 is a front view of FIG. FIGS. 4A and 4B show another embodiment of the shaft member, in which (A) is a front view and (B) is a right side view. 1 to 4 are other types of fishing weights, wherein (a) and (b) are a plan view and a front view of a core weight body, and (c) and (d) are a plan view and a front view of a shaft member. It is. FIG. 8 is a perspective view in which the shaft member of FIG. 7 is inserted into a core weight body, and a fishing weight is attached to the line by retrofitting. It is the perspective view which inserted the shaft weight of FIG. 7 in the core weight body, and attached the weight for fishing to the line by retrofitting. It is a description perspective view of a prior art.

Hereinafter, the fishing weight according to the present invention will be described in detail.
(1) Embodiment 1
1 to 6 show one embodiment of the fishing weight according to the present invention. FIG. 1 is a perspective view of the whole, FIG. 3 (b) is a plan view of the weight body, front view, FIG. 3 (c) is a plan view, front view of the shaft member, and FIG. 4 (b) is FIG. 2 (b). 4 (b) is a cross-sectional view of FIG. 2 (a), and FIG. 5 is a front view of FIG. 2 (a). FIG. 6 is a front view and a right side view of a shaft member according to another embodiment.

The fishing weight is a combined product of separate components of the weight body A and the shaft member 2, and the weight body is a composite integrated product of the core weight body 1 and the main weight body 3. The total weight is applied to fishing weights having a weight exceeding 3 g, for example.
The core weight 1 is a metal part in which a split groove 12 extending from the outer peripheral surface 14 to the cylinder hole 10 is formed in the cylindrical body 11 having the cylinder hole 10 in the center over the entire length of the cylinder. The core weight 1 is a metal processed product using a metal material harder than the main weight 3. For example, a split body 12 for attaching a fishing line is provided in a cylindrical body using a metal such as stainless steel or brass in the radial direction from the outer peripheral surface 14 thereof. By providing the split groove 12, the core weight body 1 has a substantially C shape in plan view as shown in FIG. The core weight body 1 of the present embodiment uses brass as its material. According to the index of “Brinell hardness”, the lead is 5 to 6 and the brass is 45 to 70, and the core weight 1 has higher hardness than the lead used for the main weight 3. As shown in FIGS. 3 (a) and 3 (b), a rounded arc-shaped cross section is formed from the cylinder inner wall 13 on the cylinder hole side of the both end faces 15 to the cylinder outer wall 14 side. Cylindrical hole diameter D ₂ of the core weight element 1 is set smaller than the main portion 2a outside diameter D ₁ of the shaft member 2 to be described later. Although the vertical length of the core weight body 1 is substantially equal to the vertical length of the main weight body 3, the core weight body 1 is made slightly longer here.

The main weight body 3 is a main portion of the weight body A in which a through hole 30 is formed in a spherical body made of lead (or a lead alloy) having a large specific gravity, and a crack 32 extending from the spherical surface 31 to the through hole is formed. .
In the main weight body 3 of the present embodiment, a lead (or an alloy of lead and tin, etc.) sphere is formed with a through hole 30 passing through the spherical center of the sphere, and a portion where the through hole 30 appears on the spherical surface 31 is formed. Cut to form a flat end face 35 as shown in FIG. The diameter of the through hole 30 is substantially equal to the cylinder outer diameter of the core weight body 1. An end surface-forming spherical body having a through hole 30 is provided with a fissure 32 for attaching a fishing line in a radial direction from the outer peripheral surface 31. The width of the crack 32 substantially matches the width of the split groove 12. The core weight body 1 is inserted and inserted into the through hole 30 so that the crack 32 and the split groove 12 are aligned, and the core weight body 1 is fixedly integrated with the main weight body 3 (see FIGS. 3A and 3B). ). For example, before the core weight body 1 is inserted into the through hole 30, the adhesive 4 is applied to the hole wall 34 forming the through hole 30 of the main weight body 3 or the cylindrical outer wall 14 of the core weight body 1, and then the crack 32 is formed. The core weight body 1 is inserted into the through hole 30 together with the split groove 12, and the core weight body 1 is fixedly integrated with the main weight body 3. By integrating the two, a weight body A, which is a composite integrated product of the core weight body 1 and the main weight body 3, is completed. In the present embodiment, the longitudinal length of the core weight body 1 is set to be slightly longer than the longitudinal length of the main weight body 3, so that the end faces 15 of the core weight body 1 slightly protrude from both end faces 15 of the main weight body 3. Of the weight main body A, the main weight body 3 is made of lead or lead alloy having a large specific gravity, is heavy in weight, has a volume, and becomes a main part that serves as a weight.

The shaft member 2 in axial body made of resin or rubber, and larger than the hole diameter D ₂ of the off-axis diameter D ₁ of the cylindrical hole 10 of the core weight member 1 of the main portion 2a, and the axis of the main portion Notch grooves 20 are provided in the radial direction from the outer peripheral surface 21 of the main part in the entire direction (FIG. 3). The shaft member 2 before the notch groove 20 is provided is an axisymmetric product centered on its axis CT. The notch groove 20 is provided up to a point deeper than the axial center CT of the main portion 2a (the shaft-like body) with a constant groove width W. The depth L from the main portion outer peripheral surface 21 of the notch groove 20 provided in the shaft-shaped main portion 2a of the shaft member 2 is made larger than the radius of the main portion. Further, the groove width W of the notch groove 20 is made larger than the width of the crack 32 and the groove width of the split groove 12 (FIGS. 1 and 3). Then, the shaft member 2 presses the outer peripheral surface 21 of the main part to bring the opposing wall surfaces 23 and 23 of the notch groove 20 into proximity or contact with each other by elastic deformation, thereby reducing the shaft outer diameter of the main part 2a. So that the main part 2a can be inserted. Further, the main portion 2a inserted into the cylindrical hole 10 is configured to be locked to the core weight body 1 with an elastic restoring force when the pressing is released. The outer peripheral surface 21 of the main part is pressed and the opposing wall surfaces 23 and 23 of the notch groove 20 are brought into close proximity or contact with each other by elastic deformation to reduce the outer diameter of the main part 2a so that the main part can be inserted into the cylindrical hole 10 The main part 2a is locked to the core weight body 1 by the elastic restoring force by releasing the pressure on the main part 2a after the insertion. Initially the axis diameter D ₁ of the main portion 2a is larger than Tsutsuana径D _2, (in this case the shaft member 2) main section 2a of the cutout groove 20 are cut away to a deep point beyond the axis CT of. Therefore, when brought into proximity or contact with the opposing wall surfaces 23, 23 of the cutout groove 20 having a constant groove width W in the elastic deformation, the shaft outer diameter D ₁ of the main portion 2a is smaller by the groove width of from the beginning, The diameter can be smaller than the cylinder hole diameter D _2, and the main portion 2 a can be inserted into the cylinder hole 10. If hand pressed using close the Mizoguchi portion 20b, when viewed in transverse cross section, rounded small overall portion forming the proximity or contact with the opposing walls 23 of the notched groove 20 is smaller than Tsutsuana径D ₂ . When the pressing of the outer peripheral surface 21 of the main part is released at the stage where the main part 2a has been inserted into the cylindrical hole 10, the main part is brought into close contact with and locked to the cylindrical inner wall 13 of the core weight body 1 by elastic restoring force. . At the same time, the cavity 22 is formed in the groove bottom portion 20a of the notch groove 20 by releasing the pressing of the main portion outer peripheral surface 21 (FIG. 2). Alternatively, if the main portion in a cylindrical bore 10 to reduce the off-axis diameter D ₁ of the main portion 2a while leaving voids 22 to the groove bottom portion 20a of the該切Ketsumizo presses the main portion outer peripheral surface 21 of the insert However, when the pressing of the outer peripheral surface 21 of the main portion is released, the outer peripheral surface 21 of the main portion comes into close contact with the cylindrical inner wall 13 of the core weight body 1, and a void 22 is formed in the groove bottom portion 20 a of the notch groove 20. Is done.

In the shaft member 2 of the present embodiment, the length of the main portion 2 a is set longer than the cylinder length of the core weight body 1. Thus, to contact the opposing wall surfaces 23, 23 of the cutout groove 20 of the main portion 2a by an elastic deformation, to reduce the main part shaft outer diameter D _1, and insert the main part 2a in a cylindrical hole 10, the elastic restoring In the state of FIG. 2 that is locked to the core weight 1 by force, the tip portion 29 of the main portion 2 a protrudes from the cut surface 35 of the main weight 3 and the end surface 15 of the core weight 1.
Further, the auxiliary knob portion 2b is extended from the main portion 2a. The cutout groove 20 provided in the main portion 2a is extended to the knob auxiliary portion 2b while maintaining its cross-sectional shape. The notch groove 20 is formed in the axial direction of the shaft member 2 in a longitudinal direction with an equal cross-sectional shape. Further, the shaft diameter of the auxiliary part is made larger than the main portion Jikugai径D _1, by insertion into the cylindrical hole 10 of the main portion 2a, so that the knob auxiliary section 2b is arranged on the outer core frustums 1 Set (Figure 5). When the shaft member 2 is locked to the core weight body 1, the tip portion 29 of the main portion 2 a protrudes from the one end face 15 of the core weight body 1. The outer surface 25 of the auxiliary knob portion 2b having a larger shaft diameter than the main portion 2a protrudes from the other end surface of the core weight 1. At the distal end portion 29 of the main portion 2a protruding from the one end surface of the core weight body 1, the elastic compressive deformation in which the opposed wall surfaces 23, 23 of the notch groove 20 approach or abut each other is released, and the shaft outer diameter D ₁ of the distal end portion 29 is released. Becomes slightly larger (FIG. 5). Axis diameter of the tip portion 29 is slightly larger than the same has been the main portion axis diameter cylindrical hole diameter D ₂ in the tubular bore 10.. Tip portion 29 to the Jikugai径D ₁ becomes large, it serves as a retainer of the shaft member 2. Insert the main section 2a, it is locked to the core weight element 1 by the elastic restoring force of the shaft member 2, in the core the weight element 1, engagement of the portion of the shaft member 2 to return to the original shaft diameter D ₁ Not only the stopping force but also the shaft diameter of the main portion tip portion 29 protruding from the end face 15 of the core weight body 1 is restored and functions as a stopper. On the other hand, the proximal end portion of the shaft member 2, since greater the knob auxiliary section 2b of the shaft diameter is provided than the main portion 2a, to reduce the off-axis diameter D ₁ of the main portion 2a by hand As long as no pressure is applied, the shaft member 2 cannot be removed from either end face 15 of the core weight body 1. Once the shaft member 2 is inserted into the core weight body 1, the shaft member 2 is more firmly locked to the core weight body 1 due to its structure.

The shaft member 2 can also have a shape as shown in FIG. 6, for example. A plurality of protrusion portions 27 as shown in the figure are formed on the outer peripheral surface 21 of the main portion 2a at regular intervals. A plurality of ridge portions 27 are formed around the main portion outer peripheral surface 21 at a predetermined pitch to the vicinity of the knob auxiliary portion 2b, leaving the tip portion 29. Axis diameter D ₁ of the this main portion 2a be larger than the hole diameter D ₂ of the cylindrical hole 10, and in the entire axial range of the main portion, the cutout groove 20 having a groove width W in the radial direction from the outer peripheral surface 21 Provided. The notch groove 20 is formed deeper than the axial center CT of the main portion 2a. The main section outer peripheral surface 21 opposing wall surfaces 23, 23 of Mizoguchi portion 20b of the pressing to cutout grooves 20 in close proximity or contact with the elastic deformation, and by reducing the off-axis diameter D ₁ of the main portion 2a, The main portion can be inserted into the cylindrical hole 10, and the inserted shaft member 2 is locked to the core weight body 1 with an elastic restoring force. Be used shaft member 2 made of the same material, the main portion outer peripheral surfaces 21 min that is a ridge portion 27, tends to reduce the main part shaft outer diameter D ₁ pushes the main section outer peripheral surface 21. The shaft member 2 can be easily inserted into the weight main body A. In addition, the shaft member 2 is locked to the core weight body 1 by elastic restoring force. However, the shaft member 2 tries to come into close contact with the core weight body 1 by using a wedge action at each protruding portion 27, so that stronger locking is achieved. It is even more preferable. The other structure is the same as that of the shaft member 2 of FIGS.

Next, one method of using the fishing weight will be described.
(A) Post-movement free First, the fishing line 8 is inserted into the cylindrical hole 10 from the split 32 and the split groove 12 of the weight main body A. Further, at a point slightly below the fishing line 8, the fishing line 8 is put into the notch groove 20 from the groove part 20 b of the shaft member 2 and is brought close to the groove bottom part 20 a. Next, in this state, the shaft member 2 is inserted into and inserted into the cylindrical hole 10 as shown in FIGS. 2 (a) and 4 (b). The opposing wall surfaces 23, 23 of the cutout groove 20 presses the main portion outer peripheral surface 21 in proximity or contact with the elastic deformation, the main part 2a in a cylindrical bore 10 to reduce the off-axis diameter D ₁ of the main portion 2a insert. At the time of insertion, the groove part 20b is pressed and the mouth is closed. At the time of insertion, the groove part 20b of the notch groove 20 of the shaft member 2 and the position of the split groove 12 of the core weight body 1 are shifted. Preferably, it is shifted by 180 ° as shown in FIG. By preventing the fishing line 8 from overlapping the notch groove 20 and the split groove 12, the fishing line 8 does not come out of the notch groove 20 and the split groove 12. After the main portion 2a is inserted into the cylindrical hole 10, the attachment of the shaft member 2 to the weight body A is completed when the auxiliary knob portion 2b hits the end face 15 of the core weight body 1 as shown in FIG. The shaft member 2 is locked to the core weight body 1 by the elastic restoring force of the inserted main portion 2a. The space 22 is formed vertically in the groove bottom portion 20a of the notch groove 20 of the shaft member 2 that is locked to the core weight body 1, and the fishing line 8 is accommodated in the space in the space. Here, by the pressing, the slot portion 20b becomes a vertical passage space 22 with the mouth thereof closed, and the fishing line 8 penetrates through the space. A fishing weight is attached to the line 8 in a retrofitted state.

(B) Post-fixation First, the fishing line 8 is inserted into the cylindrical hole 10 from the split 32 and the split groove 12 of the weight main body A. Further, the fishing line 8 is moved toward the inner cylinder wall 13 which is farther away from the split groove 12. Further, the fishing line is put into the notch groove 20 from the groove portion 20 b of the shaft member 2. With this state maintained, the shaft member 2 is then inserted into and inserted into the cylindrical hole 10 as shown in FIGS. At least notches opposing wall surfaces 23, 23 of the groove 20 in proximity or contact with the elastic deformation, the main part 2a in a cylindrical bore 10 to reduce the off-axis diameter D ₁ of the main portion 2a and presses the main portion outer peripheral surfaces 21 Insert. At the time of insertion, the groove part 20 b of the notch groove 20 of the shaft member 2 is aligned with the split groove 12 of the core weight body 1. The fishing line 8 moves away from the notch groove 20 and the split groove 12, and the fishing line 8 does not come out through the notch groove 20 and the split groove 12. Further, the fishing line 8 does not enter the notch groove 20 inadvertently. When the main portion 2a is inserted into the cylindrical hole 10 and the auxiliary knob portion 2b hits the end face 15, the attachment of the shaft member 2 to the weight body A is completed. The shaft member 2 is locked to the core weight body 1 by the elastic restoring force of the inserted main portion 2a. At the same time, the fishing line 8 comes into contact with the cylinder inner wall 13 and the main portion outer peripheral surface 21 and is sandwiched between the core weight body 1 and the shaft member 2. Further, the fishing line 8 is firmly fixed by the elastic restoring force of the main portion 2a. A fishing weight is retrofitted to the line 8. In FIG. 4 (a), the shaft member where the fishing line 8 is sandwiched between the core weight body 1 and the shaft member 2 is greatly deformed. It has become.

The fishing weight constructed in this way is integrated with the main weight body 3 made of lead or lead alloy having a large specific gravity, so that the core weight body 1 is fixed and integrated. Yes. Then, with a crack 32 and the split groove 12 and the cutout groove 20, the shaft member 2 is to be inserted to the main part 2a in a cylindrical hole 10 by reducing the off-axis diameter D ₁ of the main portion 2a in the elastic deformation, and Since it is the structure locked to the core weight body 1 by the elastic restoring force of the inserted main part 2a, as described above, it is possible to perform not only retrofitting but also retrofitting. This fishing weight is superior to conventional products. After inserting the fishing line 8 from the notch groove 20 of the shaft member 2 and moving it toward the groove bottom portion 20a, the opposing walls 23 and 23 are brought close to or in contact with each other, and the groove opening of the shaft member 2 as shown in FIG. The portion 20 b is displaced from the split groove 12 of the core weight body 1, and the shaft member is inserted into the cylindrical hole 10. The fishing line 8 is housed in a space 22 formed in the groove bottom portion 20a of the notch groove 20 of the shaft member 2, and the fishing weight is easily attached by a free play. Further, after inserting the fishing line 8 into the cylindrical hole 10 from the split 32 and the split groove 12 of the weight main body A and bringing it into the recessed portion of the cylindrical inner wall 13 away from the split groove 12, the opposing walls 23 and 23 of the shaft member 2 are arranged. The shaft member 2 is inserted into the cylindrical hole 10 so that 23 is brought close to or in contact with the groove portion 20b and the split groove 12 of the core weight body 1 as shown in FIG. Then, the fishing line 8 is sandwiched between the core weight body 1 and the shaft member 2, and is firmly fixed by the elastic restoring force of the main portion 2a, and the fishing weight is easily attached by retrofitting. The angler can freely choose between retrofitting and retrofitting as desired, and can raise the fishing results. It is very easy to replace the weight body A with a different weight. Since it can be retrofitted, the fishing line 8 is not cut for weight exchange.

In addition, the fishing weight can be smoothly exchanged later, but once attached, the state is securely maintained, and the fishing weight has a structure that does not easily fall off during use. Since the shaft member 2 is provided in a whole area in the axial direction of the main portion 2a from the main portion outer peripheral surface 21 to a deep point where the notch groove 20 extends beyond the axial center CT of the shaft-like body in the radial direction, Even if the diameter is larger than the hole diameter of the cylindrical hole 10, the outer peripheral surface 21 of the main part is pressed and the opposing wall surfaces 23, 23 of the notch groove 20 are brought close to or in contact with each other by elastic deformation. the diameter _{D 1} can be easily reduced. In the cylindrical rubber pipe of FIG. 10, since the cylinder shape is maintained, the cylinder diameter cannot be reduced as in the present invention, and the shaft member 2 of the present invention is completely different from the rubber pipe. By reducing the off-axis diameter D ₁ of the main portion 2a, to be able to insert the main part 2a in a cylindrical hole 10, is engaged with the core frustums 1 and inserted main portion 2a by an elastic restoring force Therefore, unlike simple insertion, the shaft member 2 inserted into the weight main body A is strongly integrated with the weight main body A by applying the elastic restoring force of the main portion 2a. The problem of the rubber pipe that was easy to fall out is improved.

  Further, a knob auxiliary portion 2b having a shaft diameter larger than that of the main portion 2a is provided on the shaft member 2, and the main portion 2a is made longer than the cylinder length of the core weight 1, and the main portion 2a is inserted into the cylinder hole 10. When the leading end portion 29 of the main portion 2a protrudes from the end surface 15 of the core weight body 1 with the main portion 2a being locked to the core weight body 1 by the elastic restoring force, the shaft member 2 and the weight body A The locking integration becomes even stronger. As shown in FIG. 5, the distal end portion 29 of the main portion 2a protruding from the one end face 15 of the core weight body 1 is released from the elastic compression deformation, and the shaft diameter of the distal end portion 29 is slightly increased. The tip end portion 29 having the increased shaft diameter functions as a retaining member for the inserted shaft member 2 toward the auxiliary knob portion 2b. On the other hand, even if the shaft member 2 is about to come out of the tip portion 29, the knob auxiliary portion 2b having a large shaft diameter serves as a stopper. Once the shaft member 2 is inserted into the core weight body 1, the shaft member 2 is more firmly engaged and integrated with the core weight body 1 due to the structure, thereby forming a fishing weight that is extremely reasonable. This completely solves the conventional problem that the fishing weight that can be attached to the fishing line 8 in a retrofitting manner easily falls off.

In addition, since the core weight 1 is made of a metal material harder than the main weight body 3 while using the main weight body 3 made of lead or lead alloy, which has a large specific gravity and is suitable as a weight, as the main portion, Withstands use. For example, even if the outside of the main body 3 made of lead or lead alloy that has been struck against a rock or the like is recessed, the core body 1 inserted into the main body 3 is made of a hard metal material. The core weight is not damaged at all. Even if the outer surface 31 of the main weight body 3 is recessed, the core weight body 1 maintains its shape and is maintained as it is inserted, and there is no inconvenience that the fishing weight falls off the fishing line 8. Further, the shape of the core weight body 1 is maintained, and the cylindrical hole 10 of the core weight body 1 does not become recessed and becomes smaller, and there is no problem that the shaft member 2 cannot be inserted by replacement or the like.
Thus, the fishing weight exhibits numerous excellent effects and is extremely beneficial.

(2) Embodiment 2
7 to 9 are fishing weights different from the first embodiment, and FIG. 7 is a core weight body and a shaft member constituting the fishing weight, and a plan view and a front view of the core weight body corresponding to FIG. (A, B) and a plan view and a front view (C, D) of the shaft member 2. FIG. 8 is a perspective view of attaching a fishing weight for retrofitting to the line corresponding to FIG. 2 (a), and FIG. 9 is a perspective view of attaching a fishing weight for retrofitting to the line corresponding to FIG. 2 (b). FIG.
The fishing weight includes a core weight body 1 and a shaft member 2. Both are separate components. The fishing weight of the present embodiment is applied to a small fishing weight, for example, from 0.5 to 3.0 g. Since the weight is small for fishing, the main weight body 3 of the first embodiment is not required.

The core weight 1 and the shaft member 2 are basically the same as those in the first embodiment. The core weight body 1 is made of metal, and a split groove 12 extending from the outer peripheral surface 14 to the cylindrical hole is formed in a cylindrical body 11 having a cylindrical hole 10 in the center.
The shaft member 2 is a resin or rubber shaft-like body, in the axial direction throughout the and main portion axis diameter D ₁ is larger than the hole diameter D ₂ of the cylindrical hole 10 of the main portion 2a, A notch groove 20 having a constant groove width in the radial direction from the outer peripheral surface 21 of the main part is provided so as to be deeper than the axial center CT of the shaft-like body (main part 2a). The opposing wall surfaces 23, 23 of the cutout groove 20 presses the main portion outer peripheral surface 21 in proximity or contact with the elastic deformation, the main part 2a in a cylindrical hole 10 by reducing the off-axis diameter D ₁ of the main portion 2a The shaft member 2 is firmly locked to the core weight body 1 by elastic restoring force. And in this locked state, the cavity 22 is formed in the groove bottom part 20a of the notch groove 20 of the shaft member locked to the core weight body 1. The knob auxiliary portion 2b extends from the main portion 2a and has an axial diameter larger than that of the main portion 2a, and is arranged outside the core weight body 1 by insertion of the main portion into the cylindrical hole 10.
As in the first embodiment, the shaft member 2 can also have a plurality of protrusion portions 27 formed around the outer peripheral surface 25 of the main portion 2a as shown in FIG. Other configurations are the same as those of the first embodiment, and detailed description thereof is omitted. The same reference numerals as those in the first embodiment denote the same or corresponding parts.

Next, a method of using the fishing weight of FIGS. 7 to 9 will be described.
(A) Post-moving free movement First, the fishing line 8 is inserted into the notch groove 20 from the groove portion 20b of the shaft member 2, and the fishing line is moved toward the groove bottom portion 20a. Further, the fishing line 8 is inserted into the cylindrical hole 10 from the split groove 12 of the core weight 1 at a slightly upper point of the fishing line 8. Next, the main portion 2a is inserted into and inserted into the cylindrical hole 10 as shown in FIG. The main part outer peripheral surface 21 is pressed, the opposing wall surfaces 23 and 23 of the notch groove 20 are brought close to or in contact with each other by elastic deformation, and the main part 2a is inserted into the cylindrical hole 10 by reducing the outer diameter of the main part 2a. . At the time of insertion, the fishing line 8 does not overlap the groove portion 20b and the split groove 12 so that the positions of the groove portion 20b of the notch groove 20 of the shaft member 2 and the split groove 12 of the core weight body 1 are shifted as shown in the figure. Like that. This is to prevent the fishing line 8 from coming out through the notch groove 20 and the split groove 12. When the main portion 2a is inserted into the cylindrical hole 10 and the auxiliary knob portion 2b hits the end face 15 of the core weight body 1, the attachment of the shaft member 2 to the weight body A is completed (FIG. 8). By inserting the shaft member 2 into the weight body A, the shaft member 2 is locked and integrated with the core weight body 1 by the elastic restoring force of the inserted main portion 2a. The fishing line 8 is accommodated in a loosely inserted state in a space 22 formed vertically in the groove bottom portion 20a of the notch groove 20 of the shaft member 2 locked to the core weight body 1. A fishing weight is attached to the line 8 in a retrofitted state.

(B) Post-fixation First, the fishing line 8 is put into the cylindrical hole 10 from the split groove 12 of the core weight body 1. Further, the fishing line is brought closer to the inner cylinder wall 13 which is farther away from the split groove 12. The fishing line 8 is put into the notch groove 20 from the groove portion 20 b of the shaft member 2. Next, the main portion 2a of the shaft member 2 is inserted into the cylindrical hole 10 as shown in FIG. The opposing wall surfaces 23, 23 of cutout grooves 20 to press the main portion outer peripheral surface 21 in proximity or contact with the elastic deformation, the main part 2a in a cylindrical bore 10 to reduce the off-axis diameter D ₁ of the main portion 2a insert. At the time of insertion, the groove part 20b of the notch groove 20 of the shaft member 2 is matched with the split groove 12 of the core weight body 1 as much as possible. This is because the fishing line 8 is kept away from the groove portion 20 b and the split groove 12 so that the fishing line 8 does not come out of the split groove 12. Moreover, it is for preventing the fishing line 8 from entering the notch groove 20 carelessly. When the main portion 2a is inserted into the cylindrical hole 10 and the auxiliary knob portion 2b hits the end face 15, the attachment of the shaft member 2 to the weight body A is completed. The shaft member 2 is firmly locked to the core weight body 1 by the insertion of the main portion 2a into the core weight body 1 and the elastic restoring force of the inserted main portion 2a. The fishing line 8 is also sandwiched between the core weight body 1 and the shaft member 2, and the fishing weight is firmly fixed to the fishing line 8 by the elastic restoring force of the main portion 2a. A fishing weight is retrofitted to the line 8.

The fishing weight thus configured is a fishing weight in which a resin or rubber shaft member 2 is inserted into and integrated with a heavy metal core weight body 1 and is as small as 0.5 to 3 g. Can handle weights. The main part 2a is inserted into and inserted into the cylindrical hole 10 of the core weight body 1 by providing the split groove 12 and the notch groove 20 and reducing the outer diameter of the main part 2a by elastically deforming the shaft member 2. Furthermore, since it is the structure latched by the core weight body 1 with the elastic restoring force of the inserted main part 2a, not only a post-movement but post-fixation can be carried out similarly to Embodiment 1. FIG.
In the retrofitting, the fishing line 8 is inserted into the notch groove 20 from the groove portion 20b of the shaft member 2 and moved toward the groove bottom portion 20a, and thereafter, the groove portion 20b of the shaft member 2 and the core weight 1 as shown in FIG. When the shaft member is inserted into the cylindrical hole 10 by shifting the split groove 12, the fishing line 8 is stored in the space 22 formed in the groove bottom portion 20 a of the notch groove 20 of the shaft member 2. A fishing weight can be attached easily by retrofitting.
In the post-fixation, the fishing line 8 is inserted into the cylindrical hole 10 from the split groove 12 of the core weight body 1 and brought close to the back of the cylindrical inner wall 13 away from the split groove 12, and then the groove portion 20b is connected to the core as shown in FIG. If the shaft member 2 is inserted into the cylindrical hole 10 in accordance with the split groove 12 of the weight body 1, the fishing line 8 is sandwiched between the core weight body 1 and the shaft member 2, and the elastic restoring force of the main portion 2 a is further increased. Firmly fixed by. The fishing weight can be easily attached by retrofitting. Since it can be retrofitted, the line 8 is not cut for exchanging the weight.

  In addition, the fishing weight has an excellent feature that it is difficult to damage the fishing line 8 even when it is fixed later. The conventional ball is used by being crushed, and if it is locked and fixed with a concentrated force applied to a part of the fishing line 8, the fishing line 8 is also crushed at that point, and the fishing line is easily broken. there were. On the other hand, the post-fixation of the main fishing weight is sandwiched between the core weight body 1 and the shaft member 2 over a wide range of the cylinder inner wall 13 and the main portion outer peripheral surface 21, and the fishing line 8 in the total area. To fix. Do not damage the fishing line 8 by applying force to it. Furthermore, since it is fixed by the elastic restoring force of the main portion 2a, even if a concentration force is applied, it is relaxed by the elasticity. Since the fishing line 8 is fixed by an elastic restoring force, unlike the case of a ball or the like, an external force that damages the fishing line 8 is not applied. In the case of using a ball, etc., there is a problem that the portion of the fishing line 8 to which the weight is attached becomes thin, but such a problem is solved. If the thin portion of the fishing line 8 is thin, it will be easy to cut there and the fishing result will not rise. The fishing weight can completely solve the thinning problem.

In addition, the fishing weight can be smoothly exchanged later, and once attached, the state is reliably maintained and does not fall off during use. Since the shaft member 2 is provided in a whole area in the axial direction of the main portion 2a from the main portion outer peripheral surface 21 to a deep point where the notch groove 20 extends beyond the axis center CT of the shaft-like body in the radial direction, Even if the shaft outer diameter D ₁ is larger than the hole diameter D ₂ of the cylindrical hole 10, the main portion outer peripheral surface 21 is pressed to bring the opposing wall surfaces 23, 23 of the notch groove 20 into close contact or contact with each other by elastic deformation. It can be relatively easily reduced off-axis diameter D ₁ of the hand force. Can insert main portion 2a in a cylindrical hole 10 by reducing the off-axis diameter D ₁ of the main portion 2a, not inserted force of the inserted main section 2a to the core weight element 1 only, the elastic restoring force of the main portion is also In addition, the main portion 2 a is strongly locked to the core weight body 1. As described above, in the fishing weight, it is difficult for the fishing weight 8 to fall off.

Further, if the auxiliary knob portion 2b having a larger shaft diameter than the main portion 2a is provided and the main portion 2a is longer than the cylinder length of the core weight body 1, a further excellent effect is exhibited. When the main portion 2a is inserted into the cylindrical hole 10 and locked to the core weight body 1 by elastic restoring force, the tip portion 29 of the main portion 2a protrudes from the end surface of the core weight body 1 in the state shown in FIGS. The integration of the shaft member 2 and the core weight 1 becomes stronger. The tip portion 29 of the main portion 2a projecting from one end surface 15 of the core weight element 1, the elastic compressive deformation is released, the shaft outer diameter D ₁ of the tip portion 29 increases slightly. Tip portion 29 Jikugai径D ₁ becomes large, and the functioning as a retaining to knob auxiliary section 2b of the shaft member 2 is inserted. On the other hand, even if the shaft member 2 is about to come out of the tip portion 29, the knob auxiliary portion 2b having a large shaft outer diameter serves as a stopper. The conventional problem that the fishing weight has dropped out during use is completely solved.
As described above, the fishing weight also exhibits a number of excellent effects and is an epoch-making invention.

  The present invention is not limited to those shown in the above-described embodiment, and various modifications can be made within the scope of the present invention depending on the purpose and application. The shape, size, number, material, and the like of the core weight 1, the shaft member 2, the main weight 3, the weight main body A, and the like can be appropriately selected according to the application.

1 Core weight 10 Cylinder hole 12 Split groove 14 Cylinder outer wall (outer peripheral surface)
2 Shaft member 2a Main part 2b Knob auxiliary part 20 Notch groove 21 Outer peripheral surface (main part outer peripheral surface)
22 voids 23 opposing wall surfaces 27 ridges 3 main weight bodies 30 through holes 31 spherical surfaces (spherical surfaces)
32 Crack 8 Line (line)
D ₁ Jikugai径(outer diameter of the main portion)
D ₁ hole diameter (cylinder hole diameter)

Claims (4)

A metal core weight body in which a split groove extending from the outer peripheral surface to the cylindrical hole is formed in a cylindrical body having a cylindrical hole in the center;
A resin-made or rubber-made shaft-like body having an outer diameter of the main portion larger than the hole diameter of the cylindrical hole and a notch groove in the radial direction from the outer peripheral surface of the main portion in the entire axial direction of the main portion. Provided up to a deep point beyond the axis of the main part, pressing the outer peripheral surface of the main part to bring the opposing wall surfaces of the notch groove into close proximity or in contact with each other by elastic deformation, thereby reducing the shaft outer diameter of the main part And a shaft member that is locked to the core weight by the elastic restoring force of the inserted main portion, and further locked to the core weight. A fishing weight characterized in that a space is formed in the groove bottom portion of the cutout groove of the shaft member. A lead body or lead alloy spherical body is further provided with a main weight body in which a through hole is formed and a crack extending from the spherical surface to the through hole is provided, and the core weight body is harder than the main weight body metal material The core weight body is fixedly integrated with the main weight body by inserting the core weight body into the through hole so that the crack and the split groove are aligned with each other. Fishing weight. The auxiliary knob portion is extended to the main portion and has an axial diameter larger than that of the main portion, and is arranged outside the core weight body by insertion of the main portion into the cylindrical hole. Item 3. A fishing weight according to item 1 or 2. The fishing weight according to claim 3, wherein a plurality of protrusion portions are formed around the outer peripheral surface of the main portion at intervals.

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