JPH0856534A - Fishing hook and its production - Google Patents

Abstract

PURPOSE: To obtain a fishing hook for readily striking a fish by shaving off one of the upper side face and the lower side face of a hook tip part or both to form a flat face of a recessed curved face and making acute edged ridge parts at the crossing part of shaved off faces to reduce inserting resistance of the fishing hook tip as small as possible. CONSTITUTION: The upper both side faces and the lower both side faces of a hook tip part 11 from a hook tip 12 to a barb 2 are shaved off to form shaved off faces 21 and 22 at the parts of the upper both side faces and the lower both side faces. Acute edged ridge parts 18, 19 and 20 are formed at parts where the shaved off faces 21 and 22 come into contact with each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in burrs and needle tips of fishing hooks and a novel method for producing the same.

[0002]

2. Description of the Related Art On a conventional fishing hook (A '), a sharp burr (2') is formed by cutting and raising the inside of a needle tip portion (11 ') of a fishing hook main body (1') as shown in FIG. Some of them are provided with gob-shaped burrs (2 '') inside the tip of the fishhook body (1 '') as shown in FIG. In the former case, the frog (1 ') is effective in preventing the bait attached to the fishing hook (A') from coming off, but on the other hand, when a fish is caught, the sharp frog (2 ') If the tip (4 ') bites into the meat of the fish and tries to remove it forcefully, there is a problem that the meat of the fish is torn off and the scratches are enlarged. Especially when releasing the caught fish, it is necessary to prevent the fish from being damaged as much as possible.
Extreme care was required when removing the hook (A ') from the fish. This kind of work may seriously damage the fish even if it is a skilled person and even if the immature person takes great care.

In addition, since the burrs (2 ') in FIG. 24 are formed by cutting and raising as described above, burrs are formed.
A sharp groove (13 ') is formed in the base (5') of (2 '), and the groove (1
There may be small cracks on the bottom of the 3 '), in which case the base of the burrow (2') may be removed when the fishhook (A ') is removed from the fish or the fish slams during fishing. May be damaged due to excessive load.

Further, the burrs (2 ') formed by cutting and raising are the bases (5') of the fishing hook main body (1 ') "that is, burrs.
(2 ') and the part that connects the fishhook body (1') '' are small, so when a strong force is applied to the base (5 ') of the frog (2') when a large fish is caught, a sharp groove (13 There was a problem that the burrs (2 ') were easily broken due to stress concentration in the').

On the other hand, the burrs (2 '') shown in FIG.
A hook (A '') with a was proposed as a solution to the former drawback. In this case, like the fishing hook (A ') in FIG. 24, the fish is less likely to be damaged and the burrs (2'') are not broken, but if the burrs (2'') are bumpy, it is very difficult to manufacture. In addition to the difficulty, it is difficult for the hump part to pass through the bait and it is difficult to attach the bait.

Furthermore, since the cross section of the tip of the conventional fishing hooks (A ') (A'') is circular, the hooks can be used for fish that have eaten food.
When the (A ') and (A'') are combined, the hook point (1) of the fishing hook (A') (A '')
1 ') (11 ``) is caught in the mouth of the fish, then penetrates the surface of the mouth of the fish and the needle point portion (11') (11 '') tries to bite into the inside of the fish, but at this time, Needle tip (11 ') (11``)
Since the cross-section of the is gradually thicker from the tip toward the rear, the surface of the oral cavity and the meat are pushed open and inserted.

As described above, in order to push out the hard oral cavity surface and meat of the fish and insert the needle tip portions (11 ') (11''), the conventional needle tip portions (11') (11 ') having a circular cross section are used. Fishhook (') with')
(A '') has a very high resistance, and if the tip (12 ') (12'') is blunt, it will be difficult to pierce, and the hook (A') (A '') There was a drawback that it would be very difficult to match).

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of such conventional drawbacks, and the first problem to be solved by the present invention is that both upper and lower side surfaces of the needle tip portion. One or both of the above are shaved to form a flat surface or a concave curved surface, and a sharp edge ridge is formed at the intersection of the scraped surfaces to reduce the insertion resistance of the needle tip as much as possible. It is in the development of a fishing hook that facilitates matching, and secondly, it is in the development of a fishing hook that not only has very strong burrs but also does not damage the fish when removing it. It is in the development of a manufacturing method that enables mass production.

[0009]

[Means for Solving the Problems] The fishing hook according to claim 1.
(A1) is `` the tip of the needle tip (12) to the bur (2) (1
The upper both side surfaces (14) and the lower both side surfaces (15) of (1) are scraped off, and the scraping surfaces (21) (22) are formed on the upper side both side surfaces (14) and the lower both side surfaces (15). And the sharp edges (18) of the sharpened edge (18) at the part where the scraped surfaces (21) (22) contact each other.
(19) (20) is formed ", and the fishing hook (A2) according to claim 2 has a needle tip portion (11) from" the tip (12) to the burial (2). ) The upper side surfaces (14) are scraped off to form a scraping surface (21) at the upper side surfaces (14), and the sharp cutting edges (21) are in contact with each other. The burial side ridge (18) is formed and the needle tip
From the lower side (15) to the bottom (1) from the (12) to the burr (2)
The portion extending to 6) is formed in an arcuate shape in cross section ", and the fishing hook (A3) according to claim 3 has a" needle tip extending from the tip (12) to the burrow (2). Both lower side surfaces (15) of the part (11) are scraped off to form a scraping surface (22) on the lower side surfaces (15), and a sharp portion is formed at a portion where the scraping surfaces (22) are in contact with each other. A blade-shaped bottom ridge (20) is formed, and the upper side surface from the needle tip (12) to the burrs (2)
The part from (14) to the upper surface (17) is formed in an arcuate cross section ”.

In the case of claim 1, sharp ridges (18) (19) (2) are formed at the intersections of the scraping surfaces (21) (22) in the needle tip portion (11).
0) are respectively formed, and in the case of claim 2, a sharp ridge portion (18) is formed at the intersection of the scraping surface (21), and in the case of claim 3, the scraping surface (22). A sharp ridge (20) will be formed at the intersection of. As a result, when the fishhook (A) is fitted to the fish, the needlepoint (12) of the fishhook (A) tries to penetrate the hard oral surface of the fish and bite into the meat of the fish. Sharp edges (18) (1)
9) (20) comes into contact with the oral surface of the fish and meat and cuts it, resulting in less resistance when inserted and easier insertion than the conventional fishing hooks (A ') (A''). The insertion resistance depends on the sharpness of the needle tip (12) and the ridges (18), (19) and (20), but is about half that of the conventional example. This point will be described in detail in an experimental example.

The fishing hook (A) according to claim 4 is a "burr (2)".
A straight line (L) that connects the rear end (5) of the rear side of the
2) and the angle (α) between the back surface (6) of the bur (2) and the surface (L3) of the fishing hook body (1) located on the opposite side to the tip (12).
Is a right angle to an obtuse angle. ”

According to this, even if the fishing hook (A) pierces the fish and the tip portion (11) of the fishing hook (A) including the burrs (2) bites into the meat, the surface (L3 of the fishing hook body (1) The angle of the back surface (6) with respect to () is large, so when removing the fishing hook (A) from the fish, the tip (4) of the frog (2) does not bite deeply into the meat and the fish hook ( A) can be removed. In addition, even if strong force is applied to the base (5) of the frog (2) when the fish rages or when the fishhook (A) is to be removed from the fish, the wide base (5) of the frog (2) as a whole. Is integrated with the fishing hook body (1) and there is no sharp notch or fine crack on the back surface (6) of the bur (2), and the bur (2) is broken from the base (5). There is nothing to do. In addition, since the angle of the back surface (6) is greatly raised as described above, even if the fishing hook (A) sticks into the clothes while operating the rod, the burrs (2) should not easily get caught in the fibers of the clothes and should be easily removed. Can be done.

The fishing hook (A) according to claim 5 is further limited to "a straight line (L1 connecting the tip end side (4) of the bur (2) and the tip end side (4) of the bur (2))" ) And the straight line (L2) connecting the rear side base end part (5) of the burrs (2) and the tip part (4) of the burrs (2) is 45 ° to 90 °, Moreover, a straight line connecting the rear end portion (5) of the bur (2) and the tip portion (4) of the bur (2)
The angle between (L2) and the surface (L3) of the fishhook body (1) located on the opposite side of the back (6) of the bur (2) with respect to the tip (12).
(α) is a right angle or an obtuse angle. ”

As a result, in addition to the operation of claim 4, the claim 5 forms an angle (θ) between the straight line (L1) and the straight line (L2) of 45 °.
Since it does not have the burrs (2 ') of the sharp tip (4') as in the conventional fishing hook (A ') shown in FIG. 24, the burrs (2) are not necessary when the fish hook (A) is removed from the fish. The tip (4) of () becomes slippery on the surface of the meat of the inserted fish, and the fishing hook (A) is easily removed from the fish.

The fishing hook (A) according to claim 6 has a "needle tip portion".
In the cross section perpendicular to the longitudinal direction of (11), the contour line of the scraping surface (21) and / or (22) is formed by a curve having a center point outside the contour line. ” As a result, as shown in FIG. 12, the contacting portions of the upper and lower side surfaces (14) (15) on the oral surface and the meat "so-called second scraping" are reduced, so that the ridge (18) (19) (20)
As a result, the effect of slicing the mouth surface of the fish and the meat is increased, and at the same time, the contact area with the mouth surface and the meat is smaller than when the upper and lower side surfaces (14, 15) are flat, and the insertion resistance is reduced.

A seventh aspect of the method for manufacturing a fishing hook (A) according to the present invention is to form a thin plate-shaped burr by pressing the upper side of the fishing hook body (1) on the side of the tip (12). The protruding portion (2a) for projecting in an arc shape from the upper side portion, and subsequently, the portion of the protruding portion (2a) for forming burrs, which is opposite to the needle tip (12), is cut to remove burrs (2). Forming the back surface (6) of the
The fishing hook main body (1) is curved so as to face the side of the roller (10) of (A).

According to this method, since the burrs (2) are formed by pressing, it is possible to mass-produce the fishing hooks (A) having the burrs (2) having excellent strength, and the working method is pressing. So, of course, materials such as conventional high speed steel,
It can be used with materials that are extremely difficult to cut, such as titanium, and by enabling the use of new materials, it is possible to provide fishing hooks (A) with new functions.

An eighth aspect is the manufacturing method according to the seventh aspect in which a "shaving process of the needle tip portion (11)" is added, and "a side portion on the needle tip (12) side of the fishing hook body (1)". The thin plate-shaped burrs forming protrusion (2a) is projected in an arc shape from the one side portion, and subsequently, the burrs forming protrusion (2a), with respect to the needle tip (12). The part on the opposite side is cut by a press to form the back surface (6) of the burrs (2), and the upper side surfaces (14) and (14) of the needle tip portion (11) from the needle tip (12) to the burrs (2) and At least one of the lower side surfaces (15) is scraped off from the needle tip (12) to the burrs (2) to make the scraped surfaces (21) (22) flat or concave curved surfaces and the scraped surface (21). A sharp ridge (18) (19) (20) is formed at the intersection of (22), and then the fish hook body (1) is turned so that the burrs (2) face the inner direction of the fish hook (A). It is characterized by "curving."
In addition to the action of, the sharp tip (18) (19) (2
0) can be configured, and the matching of the fishhook (A) to the fish can be made more sensitive.

Claim 9 is another embodiment of the method for manufacturing a fishing hook according to claim 7, wherein "the needle tip portion (11) of the fishing hook main body (1) is pressed to make the needle tip portion (11) into a thin plate shape. Then, at least one of the upper side surfaces (14) and the lower side surfaces (15) of the thin plate needle tip portion (11a) is scraped off to form a sharp needle tip (12) and a needle tip portion (11). ) Is formed on the upper surface of the burrs (2) and the scraping surfaces (21) and (22) are flat surfaces or concave curved surfaces, and the sharpening edges (18) (22) (22) 19) (2
0) is formed, and the part opposite to the burrs (2) with respect to the needle tip (12) is cut to form the back surface (6) of the burrs (2).
(2) The fishing hook main body (1) is curved so that the fishing hook main body (1) is directed toward the foot roller (10) side of the fishing hook (A). This has the same effect as that of claim 8.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, there are fishing hooks (A) according to the present invention, which are first to fifth embodiments (A1) to (A5), which will be sequentially described with reference to the drawings. In the description of the present invention, the first embodiment (A1) is taken as a representative example, and the second embodiments (A2) (A3) ... Are omitted from common parts in order to avoid complexity of description, and only different parts are described. I shall. Common parts are given common reference symbols in all figures.

In the fishing hook (A1) of the first embodiment, as shown in FIG. 1, a fin-like burrs (2) of a fish is formed on the needle tip portion (11) of the fishing hook main body (1). Furthermore, from the needle tip (12) to the burrow (2)
Both upper side surfaces (14) and lower both side surfaces (15) of the needle tip portion (11) are cut off from the needle tip (12) to the burrs (2), and the side surface of the needle tip portion (11) is scraped off. It is composed of 4 surfaces formed by, and sharp edge-shaped ridges (18) (19) (20) are formed at the portions where the scraping surfaces (21) (22) contact each other, and the needle tip (12) also It will be formed sharply. In this case, as shown in FIGS. 2 and 12, the ridge side ridge (18) and the bottom side ridge
The (20) is formed in an acute angle and the side ridges (19) are formed in an obtuse angle, and the overall shape thereof is a rectangular shape whose longitudinal cross-section in the longitudinal direction of the needle tip portion (11) is similar to a rhombus. Of course, the present invention is not limited to this, and as shown in FIG. 11, all the corners forming the ridges (18), (19) and (20) may be formed at right angles (the cross-sectional shape is square).

The material of the fishing hook (A1) may be a conventionally used material such as high speed steel, high carbon steel or titanium, and the material is not particularly limited. As a method of processing the upper and lower both side surfaces (14) and (15), an appropriate method such as grinding or cutting is adopted.

The shape of the burrs (2) will be described in detail. The basic shape is a straight line (L1) connecting the needle tip-side starting end portion (3) of the burrs (2) and the tip portion (4) of the burrs (2). And the rear base end of the bur (2)
The angle (θ) formed by the straight line (L2) connecting the tip (4) of the bur (2) and the burrs (2) is 45 ° to 90 °.
Also, the rear end (5) of the back of the bur (2) and the tip of the bur (2)
The straight line (L2) connecting (4) and the back of the bur (2) (6)
The surface (L) of the fishing hook body (1) located on the opposite side to (12)
It is formed such that the angle (α) formed with 3) is a right angle or an obtuse angle. Therefore, the burrs edge portion (8) between the tip end side (3) of the burrs (2) and the tip end portion (4) of the burrs (2) rises at a shallow angle with respect to the fishing hook main body (1). And burrow (2)
The rear surface (6) between the rear end portion (5) on the rear surface side and the tip portion (4) of the bur (2) stands up at a large angle with respect to the fishing hook main body (1).

Next, the fishing hook of the first embodiment according to the present invention
The manufacturing method of (A1) will be described. There are various methods for manufacturing the fishing hook (A) in addition to the first method described below,
Here, the first method is taken as a representative example, and for the sake of simplicity in the second and subsequent methods, the same parts as the first method will be omitted and only different points will be described. A wire for a fishing hook is cut into a predetermined length, and the needle tip portion (11) is ground to be sharpened. At this point, the cross section of the needle tip is circular. Next, the fishhook body (1)
The rear end is pressed by a press (P3) indicated by an imaginary line to form a chimoto (7). Either the polishing of the needle tip portion (11) or the pressing of the chimoto (7) may be performed first. (Figure 13)

After that, the linear fishing hook body (1) is fixed except for the needle tip portion (11), and a part of the upper side of the needle tip portion (11) is pressed by a press (P1). The thin plate-shaped bulge forming protrusion (2a) is projected in an arc shape. (Figure 14)

Then, the back of the burrs forming protrusion (2a) is cut by a press (P2) to form the back (6) side of the burrs into a concave curve. Of course, if the cutting blade of the press (P2) is rectangular, the back surface (6) of the bur (2) will be straight. (Figure 15)

Next, the scraping surfaces (21) and (22) are formed on the needle tip portion (11) of the fishing hook main body (1), and the disc-shaped cutter (23) or grindstone is used to remove the burrs (2). ) Side to the needle tip (12) diagonally, and the upper side surfaces (14) of the needle tip portion (11).
Scrape off. Although not shown, the lower side surface (1
The same method is used when removing 5). (Fig. 1
6)

Scraping off the needle tip portion (11) is performed by removing both sides (1
4) only, lower both sides (15) only or upper and lower sides (14) (15)
Apply to. Shaving surface formed by scraping (21) (2
Sharp edge-shaped ridges (18), (19) and (20) are formed at the intersection of (2). The shaving can be performed either in the case of cutting or in the case of grinding. In the case of cutting, the sharpness of the needle tip (12) can be made higher than that of polishing.

Finally, the linear fishing hook body (1) is formed by the grooved roller (25) and the grooved guide (24). The grooved roller (25) is formed along the grooved guide (24). ) To bend the needle tip (11) so that the needle tip (12)
Turn it so that the burrow (2) faces the futokoro (10). (FIG. 17) When the processing of the fishing hook (A1) is completed in this way, necessary surface treatment such as plating is performed to form a finished fishing hook (A1) of the first embodiment.

Next, a method of using the fishing hook (A1) of the present invention will be described. At the same time as the fish bites into the bait, swiftly operate the rod to align the fishhook (A1) with the fish. At this time, the hook (A
The needle tip (12) of 1) is caught in the hard oral cavity of the fish and at the same time it pierces its surface, and subsequently the needle tip portion (11) tries to bite into the meat. It is mainly the ridges (18) on the side of the burrs and the ridges (19) (20) on the side and bottom that contact the mouth surface and meat of the fish, and not the entire outer peripheral surface of the needle tip (11). . In other words, the sharp edge-like ridges (18), (19) and (20) of the needle point portion (11) mainly come into contact with the mouth surface and meat of the fish and cut the mouth surface and meat of the fish. As a result, the needle tip portion (11) is in contact with the entire circumference, the contact resistance is significantly smaller than that of the conventional fishing hook (A ') (A'') having a circular cross section that pushes and spreads the oral surface and meat,
It's that easy to stab. Therefore, matching with fish can be performed more easily.

<< Experimental Example >> The fishing hook (A1) of the present invention shown in FIG.
And (b) and (c) of FIG. 26 show experimental data comparing the ease of insertion between the fishing hook and the conventional fishing hook (A ′) shown in FIG. The fishing hooks (A1) and (A ') used in this experiment are large ones made to facilitate the experiment, and (A1) is a similar fish hook shown in FIG. 3 of the first embodiment of the present invention. Shape, and (A ') is a conventional example (Fig. 2).
It is similar to 4). The fishing hook (A1) has a linear length of 40 mm from the tip of the needle (12) to the tip portion (4) of the bur (2), and its cross section is a rhombus with a second watermark. In the case of the conventional product (A '), the tip of a round bar with a diameter of 6.5 mm is
It has a conical shape with a length of mm. The material used is a vinyl sheet having a thickness similar to that of a fish body and a thickness of 1.85 mm. In FIGS. 26 (a) and 26 (b), the horizontal axis represents the load kgf applied to the fishing hooks (A1) (A ′), and the vertical axis represents the insertion depth of the fishing hooks (A1) (A ′). According to this, the conventional fishing hook (A ') is shown in FIG.
As shown in (b), it takes 312 kgf to insert 10 mm after the needle tip (12 ') of the fishing hook (A') contacts the vinyl sheet.
Load of 4.95 kgf was required to insert the next 20 mm, and 6.30 kgf was required to insert the last 30 mm. On the other hand, the fishing hook (A) of the present invention is, as shown in FIG. 26 (a), 10 seconds after the needle tip (12) of the fishing hook (A) contacts the vinyl sheet.
It requires a load of 1.88kgf to insert mm, a load of 2.18kgf to insert the next 20mm, and 3.39k to insert the last 30mm.
A gf load was needed. Thus, the fishing hook of the present invention
According to the shape of the needle tip portion (11) of (A1), the same depth can be reached at a load of 60% at a point of 10 mm,
44% is sufficient at the point of m, and 53% at the point of 30 mm
Is enough. Further, FIG. 26 (c) is a comparison of the insertion depths when a load of 3 kgf is used. The product (A1) of the present invention reaches 26.5 mm, while the product (A ') of the conventional product has a depth of 26.5 mm. It was only 9.5 mm. As can be seen from these results, in the fishing hook (A1) of the present invention, due to the cutting effect of the sharp ridges (18), (19) and (20), the tip (12) is sharply inserted from a point slightly inserted (12). ) Is inserted.

As shown in FIG. 12, the scraping surfaces (21) and (22) forming the side surfaces of the needle tip portion (11) are concave columnar curved surfaces parallel to the longitudinal direction of the needle tip portion (11). The needle tip (1
The contour line of the vertical cross section in the longitudinal direction of 1) is a curve having a center point outside the contour line, and if a substantially rhombic rectangular cross section is formed in the so-called second watermark state, the ridge (18 ) (19)
(20) will be configured more sharply, the effect of slicing the mouth surface and meat of the fish body by this will be greater and at the same time the concave curved scraping surface (21) (22) for the mouth surface and meat The contact portion becomes smaller, and the resistance at the time of insertion becomes smaller than that of the contour line having a straight line as shown in FIG. 3 and 4 are modified examples of the first embodiment (A1), in which the needle tip portion (11) is scraped off by cutting, and further bent toward the burial (2) side and bent in a crescent shape. Here is an example. In this case, the needle tip portion (11) is more easily inserted while cutting the meat of the fish body along the arc.

The fishing hook (A2) of the second embodiment is formed by the first method, and as shown in FIG. 5, the needle tip portion (11) from the needle tip (12) to the burr (2). On both sides (14) of the
Shave off the needle tip (12) from the burrs (2) to remove the needle tip (1
The crossing portion of the upper scraping surface (21) of 1) is formed so as to have a substantially inverted V-shaped cross section, and therefore the lower side surface (15) to the bottom surface from the needle tip (12) to the burial (2). The section up to (16) remains arcuate in cross section. Also in this case, the ridge (18) on the burial side becomes a sharp blade. Further, in this case, compared to the first embodiment (A1) and its modified example (FIG. 3), the resistance at the time of insertion becomes large because of the presence of the arcuate section, but on the burial (2) side, The sharp edged burial side edge (18) of the blade comes into contact with the oral surface and meat of the fish and cuts them, and compared with the conventional examples (A ') (A''), the resistance at the time of insertion is that much. Less. Of course, the scraping surface (2
1) may be formed into a concave columnar curved surface.

In the fishing hook (A3) of the third embodiment, as shown in FIG. 6, the lower side surfaces (15) are scraped off so that the crossing portion of the lower cutting surface (22) of the needle tip portion (11) is substantially reverse. It is designed to be V-shaped, and in this case, it is burred from the needle tip (12).
The section from the upper side surface (14) to the upper surface (17) up to (2) remains arcuate in cross section. Also in this case, the second embodiment (A
Similar to 2), the resistance at the time of insertion becomes large due to the existence of the arcuate section, but since there is a sharp edge-shaped bottom ridge (20) on the bottom side, only that much compared to the conventional example. Less time resistance. Of course, also in this case, the scraping surface (21) may be formed as a concave columnar curved surface.

7 to 10 are examples formed by the second and third methods of the present invention. In the second method, as shown in FIGS. 18 (a) to (e), one end of a round bar material (S) cut into a certain size is pressed to make the needle tip portion (11) into a thin plate shape (in other words, If you do it like a spatula)
On both sides of the upper part of the thin plate needle tip (11a).
In this method, at least one of (14) and both lower side surfaces (15) is cut off obliquely to form a burr (2) on the sharp needle tip (12) and the upper surface of the needle tip portion (11). This Shaving Face (21)
(22) is configured as a flat surface or a concave curved surface as described above, and the ridges (18) (19) where the intersections of the scraping surfaces (21) (22) are sharp
Form (20). Next, the back side (6) of the burrs (2) is formed by cutting the part on the opposite side of the burrs (2) with respect to the needle tip (12),
The fishing hook main body (1) is curved so that the burrs (2) face the direction of the foot roller (10) side of the fishing hook (A). In addition, Chimoto (7)
Are formed in the same manner as in the first embodiment.

As a modified example thereof, as shown in FIGS. 19 (a) to (e), when the needle tip portion (11a) is pressed, the bottom (16) side of the needle tip portion (11a) is placed in a mold. At (the die part is shown by hatching) so that the meat pressed on the upper surface (17) side overflows. Next, scrape the thin plate needle tip portion (11a) diagonally downward from the upper surface (17) side of the thin plate needle tip portion (11a) toward the bottom of the tip, and sharp needle tip (12) and burrs (2). To form. Finally, the back of the bur (2) is scraped off to form the back (6) of the bur (2).

The third method of the present invention is, as shown in FIGS. 20 (a) to 20 (e), a conical shape of a round bar material (1) which is cut into a certain size and whose tip is conically polished. The connecting portion of the cylindrical portion and the cylindrical portion is pressed so that the bulging portion (2a) for forming the burrs is on both sides of the material (1) (or, as described above, the upper surface (17) is protected by the mold.
Side only) and then both sides of the upper part of the needle tip (11)
(14) or both sides of the lower side surface (15), or as a first modification, as shown in FIGS. 21 (a) to 21 (e), the conical portion of the needle tip portion (11). There are cases where the whole is pressed, and cases where the whole is pressed while guarding the bottom (16) side of the conical portion with a mold as a second modification << Figs. 22 (a) to (e) >>. Fishhooks are formed by this method
(A4) to (A6). In this case, a step due to the press does not occur between the base portion (5) of the bur (2) and the fishing hook main body (1) unlike the first to third embodiments.

The fourth method of the present invention is, as shown in FIGS. 23 (a) to 23 (d), a needle tip of a round bar material (1) which is cut into a certain size and whose tip is conically polished. The part (11) is cut and raised with a knife (not shown) to form a protrusion (2a) for forming burrs, and the part from the tip portion to the base is scraped off with a cutter, and the curved back surface of the burrs (2) ( 6) is formed and fine cracks at the base of the protrusion for forming burrs (2a) generated at the time of cutting and raising are removed, and then the side surface of the needle tip portion (11) is shaved off to form a sharp needle tip (12) and a ridge portion. This is an example in which (18), (19), and (20) are formed. Also in this case, the burrs (2) having the same shape as in the case of press molding can be obtained.

[0039]

According to the fishing hook of the present invention, the sharp blade-shaped ridge formed by scraping off the tip of the fishing hook reduces the resistance to insertion into the fish, so even an inexperienced person can easily put the fishing hook on the fish. The advantage is that they can be matched. further,
By making the shaving surface of the needle tip portion "No. 2 watermark" to have a concave curved surface, the contact resistance of fish meat at the time of sticking is reduced, and it is easier to stick and the matching is easy. Further, since the burrs have a special shape, the burrs are hard to break, and even a beginner can easily remove the fishing hook without seriously damaging the fish. Further, even if the fishing hook pierces the clothes, the burrs can be easily removed without getting caught in the fibers of the clothes. Further, according to the method of the present invention, since burrs are formed by pressing, any material can be used.

[Brief description of drawings]

FIG. 1 is a front view of a fishing hook according to a first embodiment of the present invention.

FIG. 2 is an enlarged perspective view of the tip portion of the fishing hook according to the first embodiment of the present invention.

FIG. 3 is an enlarged partial sectional front view of another example of the tip portion of the fishing hook according to the first embodiment of the present invention.

FIG. 4 is a plan view of FIG.

FIG. 5 is an enlarged perspective view of a needle tip portion of a fishing hook according to a second embodiment of the present invention.

FIG. 6 is an enlarged perspective view of a needle tip portion of a fishing hook according to a third embodiment of the present invention.

FIG. 7 is an enlarged perspective view of a needle tip portion of a fourth embodiment of the present invention with a fishing hook formed by the second or third method.

FIG. 8 is an enlarged perspective view of a needle tip portion of a fifth embodiment of the present invention with a fishing hook formed by the second or third method.

FIG. 9 is an enlarged perspective view of a needle tip portion of a sixth embodiment of the present invention with a fishing hook formed by the second or third method.

FIG. 10 is an enlarged perspective view of a tip portion of a modified example of the fishing hook according to the fourth to sixth embodiments.

FIG. 11 is a sectional view of the tip portion of the fishing hook according to the first embodiment of the present invention.

FIG. 12 is a cross-sectional view of the fishing hook of the first embodiment according to the present invention in which the second tip is provided on the tip portion of the fishing hook.

FIG. 13 is a front view showing a state in which the tip of the fishing hook material is polished and the other end is pressed to form chimoto by the first method of the present invention.

FIG. 14 is a front view when one side of the needle tip portion of FIG. 13 is pressed to form a bulge forming protrusion.

FIG. 15 is a front view showing a state in which the back of the frog of FIG. 14 is trimmed by a press.

FIG. 16 is a front view when the needle tip portion of FIG. 15 is scraped off.

FIG. 17 is a front view showing a state where the fishing hook main body of FIG. 17 is bent.

FIG. 18 is a flowchart of the manufacturing process of the needle tip portion of the second method of the present invention.

FIG. 19 is a flowchart of another manufacturing process of the needle tip portion of the second method of the present invention.

FIG. 20 is a flow chart of the manufacturing process of the needle tip portion of the third method of the present invention.

FIG. 21 is a flow chart of a modification of the manufacturing process of the needle tip portion of the third method of the present invention.

FIG. 22 is a flow chart of a further modified example of the manufacturing process of the needle tip portion of the third method of the present invention.

FIG. 23 is a flowchart of the manufacturing process of the needle tip portion of the fourth method of the present invention.

FIG. 24 is a front view of a conventional example.

FIG. 25 is a front view of another example of the conventional example.

FIG. 26 is a graph of the results of an insertion experiment of the fishing hook of the first example of the present invention and the fishing hook of the conventional example

[Explanation of symbols]

 (A) ... Fishing hook (1) ... Fishing hook body (2) ... Burr (3) ... Burr tip start end (4) ... Burr tip (5) ... Burr rear base end (6) ... Back (7)… Chimoto (9)… Shaft (10)… Foot roller (11)… Needle tip (12)… Needle tip (14)… Upper both sides (15)… Lower both sides (18) (19) ( 20)… Sharp edged edges (21) (22)… Shaving surface

Claims (9)

[Claims] 1. An upper side surface and a lower side surface of a needle tip portion from a needle tip to a burr are scraped off to form a scraping surface on the upper side surface part and the lower side surface part, and the scraping surface is formed. A fishing hook characterized in that a sharp blade-shaped ridge is formed at a portion where the surfaces are in contact with each other. 2. The upper both side surfaces of the needle tip portion from the needle tip to the burrs are scraped off to form a scraping surface on the upper both side surfaces, and a sharp blade shape is formed at a portion where the scraping surfaces are in contact with each other. The fishing hook is characterized in that the ridge is formed, and the portion from the lower side surface to the bottom of the needle tip to the burrs is formed in an arc shape in cross section. 3. The both side surfaces of the lower portion of the needle tip portion from the needle tip to the burrs are scraped off to form a scraping surface on the both side surfaces of the lower portion, and a sharp blade shape is formed at a portion where the scraping surfaces are in contact with each other. The fishing hook is characterized in that the ridge is formed, and the portion from the upper side surface to the upper surface from the tip of the needle to the burrs is formed in an arc shape in cross section. 4. A straight line (L2) that connects the rear end of the burrs and the tip of the burrs, and the surface (L3) of the fishing hook body located on the opposite side of the back of the burrs from the needle tip. The fishing hook according to any one of claims 1 to 3, wherein the angle (α) is a right angle or an obtuse angle. 5. An angle formed by a straight line (L1) connecting the needle tip-side starting end of the bursa and the tip of the burring (L1) and a straight line (L2) connecting the back-side proximal end of the burring and the tip of the burring (L2) θ) is 45
A straight line (L2) connecting the base end part of the back side of the bursa and the tip part of the burrow and the surface of the fishing hook main body (L3) located on the opposite side to the tip of the back from the burrow. The fishing hook according to any one of claims 1 to 3, wherein an angle (α) formed by and is between a right angle and an obtuse angle. 6. The contour line of the scraped surface is formed by a curve having a center point outside the contour line in a cross section of the needle tip portion in a direction perpendicular to the longitudinal direction. The fishing hook according to any one of to 5. 7. A thin-walled plate-shaped bulge forming protrusion is projected in an arc shape from the upper side by pressing the upper side of the fishhook body on the side of the needlepoint, and subsequently the needlepoint of the ridge forming protrusion is formed. A method for manufacturing a fishing hook, characterized in that a portion on the opposite side is cut to form a back surface of the burrs, and the fishing hook main body is curved so that the burrs face the direction of the foot roller side of the fishing hook. 8. A thin-walled plate-shaped bulge forming projection is projected in an arc shape from the upper side by pressing the upper side of the fishhook main body on the side of the needlepoint, and subsequently, the needlepoint of the burring formation forming bent portion. To form a back surface of the bursa by cutting the part on the opposite side, and at least one of both upper and lower side surfaces of the needle tip portion from the needle tip to the burrs is scraped off from the needle tip to the burrs. The shaving surface is a flat surface or a concave curved surface, and a sharp ridge is formed at the intersection of the shaving flat surface or the concave curved surface, and then the fishing hook body is curved so that the burrs face the direction of the foot roller side of the fishing hook. A method for manufacturing a fishing hook, which comprises forming the fishing hook. 9. The needle tip portion of the fishing hook main body is pressed to form the needle tip portion into a thin plate shape, and then at least one of the upper and lower side surfaces of the thin plate needle tip portion is scraped off. And forming a burr on the upper surface portion of the sharp tip and the needle tip portion and forming a sharp ridge at the intersection of the scraping surface with the scraping surface as a flat surface or a concave curved surface,
A method for manufacturing a fishing hook, characterized in that the back side of the burrs is formed by cutting a portion on the side opposite to the burrs with respect to the tip of the hook, and the fishing hook main body is curved so that the burrs face the direction of the foot roller side of the fishing hook.