Nail sinker installation method, nail sinker and its installation tool

Abstract

To provide a nail sinker attaching method enabling easily attaching a nail sinker to a desired position of a lure even in a case of a small-sized nail sinker.SOLUTION: A nail sinker 1A includes a pin insertion hole extending forward from a rear end thereof. A guide pin 12 protruding forward from a pressing member 11 is removably inserted forward from a rear end opening of the pin insertion hole into the pin insertion hole of the nail sinker 1A. The nail sinker 1A, with it inserted into the pin insertion hole is pressed from the front end thereof into a lure 20 by the pressing member 11. After that, the guide pin 12 is removed from the pin insertion hole to leave the nail sinker 1A in the lure 20.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a method for attaching a nail sinker to an artificial lure, a nail sinker, and an attachment tool therefor. [Background technology]

[0002] For example, when fishing with an artificial lure (e.g., a worm) made of a soft material, a relatively lightweight, slender weight generally called a nail sinker is often attached to the artificial lure by inserting it into its front end (tip) in order to adjust the sinking speed, swimming behavior (including swimming posture), and water depth of the artificial lure in the water (see, for example, Patent Documents 1-4). Nail sinkers are also called Neko Rig sinkers or missile sinkers.

[0003] These nail sinkers weighing a few grams are widely used, and the lightest ones weighing just 0.3 grams are also available commercially. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2006-115747 A (paragraph 0002, Figure 4) [Patent Document 1] JP 2021-103951 A (paragraph 0023, Figure 6) [Patent Document 2] Registered Utility Model No. 3224914 [Patent Document 3] Registered Utility Model No. 3235364 Summary of the Invention [Problem to be solved by the invention]

[0005] However, if you want to make more precise adjustments to the sinking speed, swimming action, water depth position, etc. of the artificial lure, you need to attach a very lightweight nail sinker to the desired position on the artificial lure, but such nail sinkers are very small and difficult to grasp with your fingers, making them difficult to attach to the artificial lure.

[0006] The present invention has been made in view of the above-mentioned technical background, and its purpose is to provide a nail sinker attachment method, a nail sinker, and an attachment tool for the same, which can easily attach even a small nail sinker to an artificial bait. [Means for solving the problem]

[0007] The present invention provides the following means.

[0008] 1) A method for attaching a nail sinker to an artificial lure, comprising the steps of: The nail sinker is provided with a pin insertion hole extending forward from its rear end, a guide pin provided on the pushing member so as to protrude forward is inserted into the pin insertion hole of the nail sinker from a rear end opening thereof forward and removably; In this state, the nail sinker is pushed into the lure from its front end by the pushing member, Thereafter, the guide pin is removed from the pin insertion hole, thereby leaving the nail sinker in the artificial lure.

[0009] 2) The pushing member has a knob portion for pushing operation and a pressing protrusion provided at a front end portion of the knob portion so as to protrude forward, and the guide pin protrudes forward from a pressing surface formed by a front end surface of the pressing protrusion, a diameter of the pressing protrusion is set to be larger than a diameter of a rear end opening of the pin insertion hole of the nail sinker and equal to or smaller than a diameter of the rear end portion of the nail sinker, 2. The method for attaching a nail sinker according to claim 1, wherein the rear end of the nail sinker is pushed forward by the pressing surface of the pressing protrusion of the pressing member, thereby forcing the nail sinker into the lure from its front end.

[0010] 3) A convex cone-shaped portion is formed on the pressing surface, and a concave cone-shaped portion corresponding to the convex cone-shaped portion is formed on the rear end surface of the rear end of the nail sinker, The guide pin of the pushing member is inserted into the pin insertion hole of the nail sinker from its rear end opening forward and removably, and the convex cone-shaped portion of the pressing protrusion is fitted into the concave cone-shaped portion of the nail sinker, In this state, the rear end surface of the nail sinker is pushed forward with the pressing surface of the pressing protrusion of the pushing member, thereby forcing the nail sinker into the lure from its front end.

[0011] 4) A nail sinker attached to an artificial bait, A pin insertion hole is provided extending forward from the rear end, A nail sinker is attached to an artificial lure by being pushed into the artificial lure from its front end by the pushing member, with a guide pin provided on the pushing member so as to protrude forward being inserted forward and removably into the pin insertion hole from its rear end opening.

[0012] 5) The guide pin protrudes forward from a pressing surface of the pressing member that presses the guide pin, and a convex cone-shaped portion is formed on the pressing surface, 5. The nail sinker according to claim 4, wherein a concave conical portion into which the convex conical portion fits when the pushing member pushes the nail sinker into the lure is formed on the rear end surface of the rear end portion.

[0013] 6) A nail sinker attachment for attaching a nail sinker to an artificial lure, a pushing member provided with a guide pin protruding forward, The guide pin is inserted into a pin insertion hole provided in the nail sinker and extending forward from its rear end portion through an opening at its rear end so as to be removable forward, The pushing member is a nail sinker attachment that pushes the nail sinker from its front end into the artificial lure with the guide pin inserted into the pin insertion hole of the nail sinker.

[0014] 7) The pushing member has a knob portion for pushing operation and a pressing protrusion provided at a front end portion of the knob portion so as to protrude forward, and the guide pin protrudes forward from a pressing surface formed by a front end surface of the pressing protrusion, a diameter of the pressing protrusion is set to be larger than a diameter of a rear end opening of the pin insertion hole of the nail sinker and equal to or smaller than a diameter of the rear end portion of the nail sinker, 7. The nail sinker attaching tool according to item 6, wherein the pressing surface of the pressing protrusion of the pushing member is a portion that presses the rear end of the nail sinker when the nail sinker is pushed into the artificial lure.

[0015] 8) A convex cone-shaped portion is formed on the pressing surface, 8. The nail sinker attachment device according to paragraph 7, wherein the convex cone-shaped portion is fitted into a concave cone-shaped portion formed on the rear end surface of the rear end of the nail sinker when the nail sinker is pushed into the artificial lure. [Effects of the Invention]

[0016] The present invention has the following advantages.

[0017] According to the nail sinker attachment method of the preceding paragraph 1, the guide pin of the pushing member is inserted into the pin insertion hole of the nail sinker, and in this state the nail sinker is pushed into the lure from its front end using the pushing member, and then the guide pin is removed from the pin insertion hole, leaving the nail sinker in the lure, so that not only large (weight) nail sinkers but even small nail sinkers can be easily and reliably held by inserting the guide pin of the pushing member into the pin insertion hole of the nail sinker. Therefore, the nail sinker can be easily attached to the lure in the desired position.

[0018] In the preceding paragraph 2, the pushing member has a knob portion for the pushing operation, so that when pushing the nail sinker into the lure, the pushing operation can be easily performed by pinching this knob portion and performing the pushing operation.

[0019] Furthermore, the pushing member has a pushing protrusion, and the diameter of this pushing protrusion is set to be larger than the diameter of the rear end opening of the pin insertion hole of the nail sinker and equal to or smaller than the diameter of the rear end of the nail sinker, so that the nail sinker can be easily pushed deep into the artificial lure, and the pushing protrusion can be easily removed from the artificial lure when the guide pin is removed from the pin insertion hole.

[0020] In the above paragraph 3, the guide pin of the pushing member is inserted into the pin insertion hole of the nail sinker, and the convex cone-shaped portion of the pressing protrusion is fitted into the concave cone-shaped portion of the nail sinker, and in this state the rear end surface of the nail sinker is pressed forward by the pressing surface of the pressing protrusion of the pushing member, so the nail sinker is highly stable when it is pushed into the lure, and therefore the nail sinker can be easily and reliably pushed into the desired position in the lure.

[0021] In the case of the nail sinker in the preceding paragraph 4, for the same reason as in the preceding paragraph 1, even if the nail sinker is small in size, it can be easily attached to the desired position of the artificial bait.

[0022] In the above item 5, the nail sinker is highly stable when being pushed into the lure for the same reason as in the above item 3. Therefore, the nail sinker can be easily and reliably pushed into the desired position in the lure.

[0023] The nail sinker attachment devices of the above items 6 to 8 can be suitably used at least for the nail sinker attachment method of the above item 1. [Brief explanation of the drawings]

[0024] [Figure 1A] FIG. 1A is a perspective view of a nail sinker and its attachment according to one embodiment of the present invention. [Figure 1B] FIG. 1B is a longitudinal cross-sectional view of FIG. 1A. [Figure 2A] FIG. 2A is a perspective view showing a state in which a guide pin of the attachment is inserted into a pin insertion hole of the nail sinker. [Figure 2B] FIG. 2B is a longitudinal cross-sectional view of FIG. 2A. [Figure 3] FIG. 3 is a diagram illustrating a method for attaching the nail sinker to an artificial lure using the attachment tool. [Figure 4] FIG. 4 is a diagram illustrating another method of attaching the nail sinker to an artificial lure using the same attachment tool. [Figure 5] FIG. 5 is a perspective view of a nail sinker according to some embodiments of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0025] Some embodiments of the present invention will be described below with reference to the drawings.

[0026] As shown in Figures 1A and 1B, a nail sinker 1A according to one embodiment of the present invention is attached to an artificial lure 20 (see Figure 3) by being pushed into the artificial lure 20 using a nail sinker attachment device 10 according to one embodiment of the present invention.

[0027] As shown in Figure 3, the artificial lure 20 is generally called a soft lure (e.g., a worm) and is made of a soft material (soft resin, soft rubber, etc.), and its shape is, for example, elongated in one direction (front-to-back). The fishhook 30 is attached by being hooked at a predetermined location on the artificial lure 20 (approximately the middle of the artificial lure 20 in the longitudinal direction in Figure 3). The reference numeral 31 in the figure denotes the tip of the fishhook 30.

[0028] 1A and 1B, the nail sinker 1A has an elongated shape extending in the front-to-rear direction, and its cross section is circular. The front end (tip) 5 of the nail sinker 1A is tapered. When attaching the nail sinker 1A to the lure 20, the front end 5a of the nail sinker 1A is pushed (inserted) into the lure 20 (see FIG. 3).

[0029] The nail sinker 1A is made of, for example, metal (tungsten, lead, brass, etc.) and is manufactured by casting, injection molding, cutting, or the like.

[0030] The nail sinker 1A is provided with a pin insertion hole 2 having a circular cross section that extends forward from its rear end 3. More specifically, this pin insertion hole 2 extends straight forward from the center of the rear end face 3a of the rear end 3 of the nail sinker 1A along the central axis of the nail sinker 1A and through it. The diameter of the pin insertion hole 2 is constant in the length direction (i.e., the front-to-rear direction) of the nail sinker 1A.

[0031] Furthermore, on the outer circumferential surface of the nail sinker 1A, multiple (six in the figure) barbs 6 that protrude slightly radially outward are formed at equal intervals along the length of the nail sinker 1A. These barbs 6 prevent the nail sinker 1A from accidentally coming out of the lure 20.

[0032] The nail sinker attachment 10 includes a push member 11 provided with a guide pin 12 protruding forward.

[0033] The pushing member 11 is used to push forward the rear end 3 of the nail sinker 1A (more specifically, the rear end surface 3a of the nail sinker 1A) when pushing the nail sinker 1A into the lure 20, and has a square plate-shaped knob 13 for the pushing operation, and a pressing protrusion 14 with a circular cross section that is integrally formed and protrudes forward from the front end of the knob 13. The diameter of the pressing protrusion 14 is approximately constant in the length direction (i.e., the front-to-rear direction), and the guide pin 12 protrudes forward from the center of a pressing surface 14a that is the front end surface (tip surface) of the pressing protrusion 14.

[0034] The pressing surface 14a of the pressing protrusion 14 of the pressing member 11 is a portion that presses the rear end surface 3a of the rear end portion 3 of the nail sinker 1A when the nail sinker 1A is pushed into the artificial bait 20.

[0035] In the pushing member 11, the knob portion 13 and the pushing protrusion 14 are made of hard resin. The guide pin 12 has a circular cross section and is made of metal, and the diameter of the guide pin 12 is constant in its length direction (i.e., the front-to-rear direction) and is set to be slightly smaller than the diameter of the rear end opening 2a of the pin insertion hole 2 of the nail sinker 1A.

[0036] 1B, knob portion 13 and pressing protrusion 14 are formed integrally with guide pin 12 by insert molding so that the front side of guide pin 12 protrudes forward from pressing surface 14a of pressing protrusion 14 and the rear side of guide pin 12 is exposed to the rear side of knob portion 13. Furthermore, with knob portion 13 and pressing protrusion 14 formed in this manner, guide pin 12 is integrated with knob portion 13 and pressing protrusion 14 so that the length of protrusion of pressing protrusion 14 of guide pin 12 forward from pressing surface 14a can be changed as desired.

[0037] A ring portion 12b is formed by bending the rear end of the guide pin 12 exposed on the rear side of the knob portion 13 into an annular shape. A string member (not shown), such as a strap, is connected to this ring portion 12b.

[0038] The length of projection forward from the pressing surface 14a of the pressing protrusion 14 of the guide pin 12 can be changed as described above, and in this embodiment is set to be longer than that of the nail sinker 1A, for example. As shown in Figures 2A and 2B, when the nail sinker 1A is attached to the artificial lure 20, the guide pin 12 is inserted into the pin insertion hole 2 of the nail sinker 1A from its rear end opening 2a forward and removably.

[0039] In the pressing member 11, the diameter of the pressing protrusion 14 is set to be larger than the diameter of the rear end opening 2a of the pin insertion hole 2 of the nail sinker 1A and equal to or smaller than the diameter of the rear end portion 3 of the nail sinker 1A (more specifically, the rear end surface 3a of the nail sinker 1A).

[0040] Furthermore, a convex cone-shaped portion (more specifically, a convex cone-shaped portion) 15 that protrudes in a convex cone shape (more specifically, a convex cone-shaped portion) is formed on the pressing surface 14a of the pressing protrusion 14, and the guide pin 12 protrudes forward from the apex of this convex cone-shaped portion 15. A concave cone-shaped portion (more specifically, a concave cone-shaped portion) 4 that is recessed corresponding to the convex cone-shaped portion 15 is formed on the rear end surface 3a of the nail sinker 1A, and a rear end opening 2a of the pin insertion hole 2 is provided at the bottom of this concave cone-shaped portion 4.

[0041] Next, a method for attaching the nail sinker 1A to the artificial lure 20 using the attachment tool 10 will be described below.

[0042] 1A and 1B, the gripping portion 13 of the pressing member 11 of the mounting fixture 10 is first pinched with fingers (not shown) and the guide pin 12 is inserted forward and removably into the pin insertion hole 2 of the nail sinker 1A from its rear end opening 2a, while the convex cone-shaped portion 15 of the pressing surface 14a of the pressing projection 14 is fitted into the concave cone-shaped portion 4 of the nail sinker 1A. In this state, the front end 12a of the guide pin 12 is exposed and protrudes forward from the front end opening of the pin insertion hole 2 of the nail sinker 1A, as shown in FIGS. 2A and 2B.

[0043] In this state, as shown in Figure 3, the pressing surface 14a of the pressing protrusion 14 pushes the rear end surface 3a of the nail sinker 1A forward relative to the artificial lure 20 toward the desired position of the artificial lure 20 (in this embodiment, the head of the artificial lure 20) (Figure 3(a)), thereby inserting the guide pin 12 into the artificial lure 20 from its front end 12a and pushing the nail sinker 1A from its front end 5a to the desired position of the artificial lure 20.

[0044] As shown in the same figure (b), when the nail sinker 1A is pushed into the desired position in the artificial lure 20, only the rear end face 3a of the nail sinker 1A and its vicinity are located outside the artificial lure 20, and the rest of the nail sinker 1A is inside the artificial lure 20, and almost the entire length (front-to-back direction) of the pressing protrusion 14 of the pushing member 11 is located outside the artificial lure 20.

[0045] Next, by pulling the push member 11 backward relative to the lure 20, the guide pin 12 is moved backward and removed from the pin insertion hole 2 as shown in the same figure (c), thereby leaving the nail sinker 1A in the desired position on the lure 20.

[0046] By the above procedure, the nail sinker 1A is attached to the artificial lure 20 at a desired position.

[0047] According to the nail sinker attaching method of this embodiment, even if the nail sinker 1A is small in size as well as large in size (weight), the nail sinker 1A can be easily and reliably held by inserting the guide pin 12 of the pushing member 11 into the pin insertion hole 2 of the nail sinker 1A. Therefore, the nail sinker 1A can be easily attached to the artificial lure 20 at a desired position.

[0048] Furthermore, since the pushing member 11 has a knob portion 13 for pushing operation, when pushing the nail sinker 1A into the artificial bait 20, the pushing operation can be easily performed by pinching this knob portion 13 with the fingers and performing the pushing operation.

[0049] Furthermore, the guide pin 12 of the pushing member 11 is inserted into the pin insertion hole 2 of the nail sinker 1A, and the convex cone-shaped portion 15 of the pushing surface 14a of the pushing protrusion 14 is fitted into the concave cone-shaped portion 4 of the nail sinker 1A, and in this state the pushing surface 14a of the pushing protrusion 14 of the pushing member 11 pushes the rear end surface 3a of the nail sinker 1A forward, so the nail sinker 1A is highly stable when it is pushed into the artificial lure 20. Therefore, the nail sinker 1A can be easily and reliably pushed into the desired position in the artificial lure 20.

[0050] Furthermore, since a conical portion 4 is formed on the rear end surface 3a of the nail sinker 1A and a rear end opening 2a of the pin insertion hole 2 of the nail sinker 1A is provided at the bottom of the conical portion 4, when the guide pin 12 is inserted into the pin insertion hole 2 of the nail sinker 1A, the conical portion 4 acts as a guide recess that guides the front end 12a of the guide pin 12 to the rear end opening 2a of the pin insertion hole 2. Therefore, the operation of inserting the guide pin 12 into the pin insertion hole 2 can be easily performed.

[0051] Furthermore, since a barb portion 6 is formed on the outer peripheral surface of the nail sinker 1A, not only can the barb portion 6 prevent the nail sinker 1A from accidentally coming out of the artificial lure 20 when being cast, but also, when the guide pin 12 of the nail sinker 1A pressed into the artificial lure 20 is removed from its pin insertion hole 2, the barb portion 6 can prevent the nail sinker 1A from coming out of the artificial lure 20 together with the guide pin 12.

[0052] Furthermore, since the pushing member 11 has a pushing protrusion 14, as shown in Figure 4, if the desired position of the artificial lure 20A to which the nail sinker 1A is to be attached is located deep within the artificial lure 20A, the nail sinker 1A can be attached by the following method.

[0053] That is, in the same manner as in the method of attaching the nail sinker 1A described above, the gripping portion 13 of the pressing member 11 is pinched with the fingers, and the guide pin 12 is inserted forward and removably into the pin insertion hole 2 of the nail sinker 1A from its rear end opening 2a, and the convex conical portion 15 of the pressing surface 14a of the pressing protrusion 14 is fitted into the concave conical portion 4 of the nail sinker 1A.

[0054] In this state, the pressing surface 14a of the pressing protrusion 14 presses the rear end surface 3a of the nail sinker 1A forward relative to the lure 20A toward the desired position of the lure 20A, thereby inserting the guide pin 12 from its front end 12a into the lure 20A and pushing the nail sinker 1A from its front end 5a to the desired position of the lure 20A.

[0055] As shown in Figure 4(a), when the nail sinker 1A is pushed into the desired position in the artificial lure 20A, the entire nail sinker 1A is present within the artificial lure 20A, and furthermore, almost the entire length (front-to-back direction) of the pressing protrusion 14 of the pushing member 11 is also pushed into the artificial lure 20A and present within the artificial lure 20A.

[0056] Next, by pulling the pushing member 11 backward relative to the lure 20A, the pushing protrusion 14 and the guide pin 12 move backward as shown in the same figure (b), and the pushing protrusion 14 is removed from the lure 20A and the guide pin 12 is removed from the pin insertion hole 2, thereby leaving the nail sinker 1A in the desired position on the lure 20A.

[0057] By the above procedure, the nail sinker 1A is attached to the desired position of the artificial lure 20A.

[0058] According to this attachment method, the diameter of the pressing protrusion 14 of the pushing member 11 is not only larger than the diameter of the rear end opening 2a of the pin insertion hole 2 of the nail sinker 1A, but is also set to be the same as or smaller than the diameter of the rear end 3 of the nail sinker 1A, so that when the pressing protrusion 14 is pushed into the artificial lure 20A, the pressing protrusion 14 is less likely to receive pushing resistance from the artificial lure 20A. Therefore, the nail sinker 1A can be easily pushed deep into the artificial lure 20A, and when the guide pin 12 is pulled out of the pin insertion hole 2, the pressing protrusion 14 can be easily pulled out of the artificial lure 20A.

[0059] Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit and scope of the present invention.

[0060] Furthermore, the nail sinker according to the present invention is not limited to the nail sinker 1A of the above embodiment, but may also be, for example, nail sinkers 1B to 1G shown in Fig. 5. In the figure, elements that have the same functions as elements of the nail sinker 1A of the above embodiment are given the same reference numerals, and the nail sinker given the reference numeral 1A is the one shown in the above embodiment.

[0061] In the figure, the nail sinkers 1A to 1C all have a circular cross-sectional shape, but differ from one another in length, weight, and number of barbs 6. Specifically, the lengths of the nail sinkers 1A to 1C range from 15.0 mm to 8.87 mm, and their weights range from 0.9 g to 0.45 g.

[0062] The nail sinkers 1D to 1G all have a substantially rectangular cross section, but differ from one another in length, weight, and number of barbs 6. Specifically, the lengths of the nail sinkers 1D to 1G range from 9.32 mm to 3.86 mm, and their weights range from 0.3 g to 0.1 g. Thus, according to the present invention, even a very light nail sinker weighing less than 0.3 g can be easily and securely held by inserting the guide pin 12 of the pushing member 11 into the pin insertion hole 2 of the nail sinker, so that the nail sinker can be easily attached to the desired position of the lure.

[0063] In the present claims, when the cross-sectional shape of the rear end portion 3 of the nail sinker is non-circular, such as a polygonal shape, as in the above-mentioned nail sinkers 1D to 1G, the diameter of the rear end portion 3 of the nail sinker means the diameter of the smallest circumscribing circle of the cross-section of the rear end portion 3. Similarly, when the cross-sectional shape of the rear end opening 2a of the pin insertion hole 2 of the nail sinker is non-circular, the diameter of the rear end opening 2a of the pin insertion hole 2 means the diameter of the smallest circumscribing circle of the cross-section of the rear end opening 2a. Similarly, when the cross-sectional shape of the pressing protrusion 14 of the pressing member 11 is non-circular, the diameter of the pressing protrusion 14 means the diameter of the smallest circumscribing circle of the cross-section of the pressing protrusion 14. [Industrial Applicability]

[0064] INDUSTRIAL APPLICABILITY The present invention can be used for a method of attaching a nail sinker to an artificial lure, a nail sinker, and an attachment tool therefor. [Explanation of symbols]

[0065] 1A: Nail sinker 2: Pin insertion hole 2a: Rear end opening of pin insertion hole 3: Rear end of nail sinker 3a: Rear end surface of nail sinker 4: Concave cone-shaped part 10: Mounting fixture 11: Pushing member 12: Guide pin 13: Knob 14: Pressing protrusion 14a: Pressing surface 15: Convex cone-shaped part 20: Artificial bait

Claims

1. A nail sinker attachment method for attaching a nail sinker to an artificial lure, comprising: The nail sinker is provided with a pin insertion hole extending forward from its rear end, a guide pin provided on the pushing member so as to protrude forward is inserted into the pin insertion hole of the nail sinker from a rear end opening thereof forward and removably; In this state, the nail sinker is pushed into the lure from its front end by the pushing member, Thereafter, the guide pin is removed from the pin insertion hole, thereby leaving the nail sinker in the artificial lure.

2. the pushing member has a knob portion for pushing operation and a pressing protrusion provided at a front end portion of the knob portion so as to protrude forward, and the guide pin protrudes forward from a pressing surface formed by a front end surface of the pressing protrusion, a diameter of the pressing protrusion is set to be larger than a diameter of a rear end opening of the pin insertion hole of the nail sinker and equal to or smaller than a diameter of the rear end portion of the nail sinker, 2. The method for attaching a nail sinker according to claim 1, wherein the rear end of the nail sinker is pushed forward by the pressing surface of the pressing protrusion of the pressing member, thereby forcing the front end of the nail sinker into the lure.

3. a convex cone-shaped portion is formed on the pressing surface, and a concave cone-shaped portion corresponding to the convex cone-shaped portion is formed on the rear end surface of the rear end portion of the nail sinker, The guide pin of the pushing member is inserted into the pin insertion hole of the nail sinker from its rear end opening forward and removably, and the convex cone-shaped portion of the pressing protrusion is fitted into the concave cone-shaped portion of the nail sinker, 3. A method for attaching a nail sinker according to claim 2, wherein in this state, the rear end surface of the nail sinker is pushed forward with the pressing surface of the pressing protrusion of the pushing member, thereby forcing the nail sinker into the lure from its front end.

4. A nail sinker attached to an artificial bait, A pin insertion hole is provided extending forward from the rear end, A nail sinker is attached to an artificial lure by being pushed into the artificial lure from its front end by the pushing member, with a guide pin provided on the pushing member so as to protrude forward being inserted forward and removably into the pin insertion hole from its rear end opening.

5. The guide pin protrudes forward from a pressing surface of the pressing member that presses the guide pin, and a convex cone-shaped portion is formed on the pressing surface, 5. A nail sinker according to claim 4, wherein a concave conical portion is formed on the rear end surface of the rear end portion, into which the convex conical portion fits when the nail sinker is pushed into the lure by the pushing member.

6. A nail sinker attachment for attaching a nail sinker to an artificial lure, a pushing member provided with a guide pin protruding forward, The guide pin is inserted into a pin insertion hole provided in the nail sinker and extending forward from its rear end portion through an opening at its rear end so as to be removable forward, The pushing member is a nail sinker attachment that pushes the nail sinker from its front end into the artificial lure with the guide pin inserted into the pin insertion hole of the nail sinker.

7. the pushing member has a knob portion for pushing operation and a pressing protrusion provided at a front end portion of the knob portion so as to protrude forward, and the guide pin protrudes forward from a pressing surface formed by a front end surface of the pressing protrusion, a diameter of the pressing protrusion is set to be larger than a diameter of a rear end opening of the pin insertion hole of the nail sinker and equal to or smaller than a diameter of the rear end portion of the nail sinker, 7. The nail sinker attaching tool according to claim 6, wherein the pressing surface of the pressing protrusion of the pushing member is a portion that presses the rear end of the nail sinker when the nail sinker is pushed into the artificial bait.

8. A convex cone-shaped portion is formed on the pressing surface, 8. The nail sinker attachment according to claim 7, wherein the convex cone-shaped portion is fitted into a concave cone-shaped portion formed on the rear end surface of the rear end of the nail sinker when the nail sinker is pushed into the lure.

Images