WO2015001588A1

WO2015001588A1 - Split ring for lures

Info

Publication number: WO2015001588A1
Application number: PCT/JP2013/004204
Authority: WO
Inventors: 一典佐野
Original assignee: 株式会社がまかつ
Priority date: 2013-07-05
Filing date: 2013-07-05
Publication date: 2015-01-08
Also published as: JPWO2015001588A1

Abstract

Provided is a high performance split ring for lures capable of ensuring high strength while being small and is further capable of preventing occurrences of unnatural vibration or abnormal noise in the water by avoiding two points of contact with the hook during use. A ring-shaped split ring for lures (10) for which a metal wire (11) is wound twice spirally so as to overlap mutually is characterized in that the cross section that is perpendicular to the winding direction of the metal wire (11) is a simple circular shape. The present invention is a split ring for lures (10) for which an improvement is made not on the planar shape but the cross section shape thereof.

Description

Lure split ring

The present invention relates to a split ring for a lure for connecting a fishing rod or a fishing line to a lure (fishing bait).

Conventionally, the split ring for luer is spirally wound twice to form a ring shape so that the metal wires overlap each other, and when connecting the fishing rods, the opposing surfaces of the overlapping metal wires are split ring pliers (opener) With a tool such as, etc., the ring portion of the fishing rod is inserted from the clearance space and connected.

Various technical developments have been made for such lure split rings. For example, in the lure split ring disclosed in Patent Document 1, although the metal wire is formed by winding twice, the shape is not a circle, The large diameter portion and the small diameter portion are connected to each other like a different shape ring, and by making such a shape, when connected to the luer, the fulcrum of the wire eye (attachment ring) of the lure will not be fixed, and the smooth lure I am trying to get an action.

However, since the large diameter portion and the small diameter portion coexist in one ring, the ring shape is elongated in one direction so that the ring shape is large, and the strength is also easily reduced compared to a perfect circle, which also leads to high cost in manufacturing. I had a problem.

On the other hand, in the split ring disclosed in Patent Document 2, the metal wire is not wound spirally twice, but is wound only once, and both end portions (folded portions) thereof are overlapped as a connecting split portion. When connecting the fishing rod, simply put the fishing rod into the split ring by inserting the overlapped part (split part) so that it is pushed open by the ring part of the fishing rod without using a tool such as a split ring pliers It is made to be able to connect.

In this case, the split ring is easily elastically deformed not only in the axial direction but also in the radial direction because it is single-turned, and when a large load is applied to the split ring, the split portion instantaneously extends in the radial direction and the fishing rod Become unreliable for lure applications that are likely to come off and are subject to large loads. Therefore, when used in such applications, it is necessary to increase the number of turns or to increase the wire diameter in order to increase the strength, but the split ring itself becomes large and causes the proper movement of the lure in water. turn into. As mentioned above, although the planar shape of the split ring for lure was examined, the cross-sectional shape of the split ring for luer was not examined.

Japanese Patent Application Laid-Open No. 10-28492 JP-A-8-277829

As described above, although various techniques are provided for the lure split ring, as shown in FIGS. 7A and 7B, a round made of a high strength spring material as shown in FIG. The lure split ring 71 spirally wound twice such that the metal wires overlap with each other is the mainstream. The lure split ring 71 is spirally wound twice in the axial direction as shown in the cross-sectional view of FIG. 7C, and the round metal wire 72 of its first turn (upper side of FIG. 7C); Since the round metal wires 73 of the second turn (the lower side in FIG. 7C) are stacked in two upper and lower stages, there is a limit to further downsizing and strengthening in the stacking direction (axial direction). Was occurring.

Here, considering the strengthening and downsizing of the split ring for lure having such shape, it is sufficient to increase the diameter of the metal wire in order to strengthen the split ring for lure, but if it is thickened, the lure in water will be made Undesirable because the undesirable resistance to it increases. On the other hand, in order to reduce the undesirable resistance that the lure receives in water, the diameter of the lure split ring may be reduced, but this will result in a lack of strength. As described above, it has been difficult at the same time to simultaneously satisfy the increase in strength and the reduction in size of the split ring for lure.

Furthermore, when the fishing rod 74 (or the fishing line 75) is connected to the lure via the lure split ring 71, the inner circumferential surface of the lure split ring 71 projects in an arc shape of the first turn on the inner circumferential surface thereof. A constricted space 71a is generated between the turns of the second turn 72a and the inner circumferential surface 73a protruding in the arc shape of the second turn. Then, when the luer is used, the ring portion 74a of the fishing rod 74 comes in contact with the inner

circumferential surfaces

72a and 73a of the lure split ring 71 at two points, and is rubbed at two positions. As a result, unnatural vibration and noise are likely to occur in water, which may adversely affect fishing results.

Therefore, the present invention is a high-performance, compact device that can ensure high strength and can prevent the occurrence of unnatural vibrations and abnormal noise in water while avoiding two-point contact with a fishing rod during use. To provide a split ring for lure.

The invention described in claim 1 is a ring-shaped split ring 10 for a luer spirally wound twice so that the metal wires 11 overlap each other,
It is characterized in that it is a split ring for a lure 10 "in which the shape of the cross section orthogonal to the winding direction of the metal wire 11 is a single circular shape.

The invention described in claim 2 relates to the lure split ring 10 according to claim 1, characterized in that "the shape of the cross section orthogonal to the winding direction of the overlapping metal wire 11 is semicircular".

The invention described in claim 3 relates to the lure split ring 10 according to

claim

1 or 2, characterized in that "the opposing surfaces of the metal wires 11 are formed on the flat surface 12".

The invention described in claim 4 relates to the lure split ring 10 according to any one of claims 1 to 3, characterized in that "both widthwise end portions of the facing surface of the metal wire 11 are bent". I assume.

According to the invention as set forth in

claim

1 or 2, since the split ring for luer is provided in a circular cross section, the twice spirally wound portion is contained in a circle, and the opposing surfaces have a length substantially equal to the diameter of the circle. And the contact area between the metal wires becomes large. Therefore, even if a large external stress is applied to the lure split ring, the external stress can be dispersed without being concentrated at one point, so it becomes difficult to deform and the lure split ring can be strengthened. . Furthermore, since the appearance of the lure split ring is as if it were a single round metal wire, the lure split ring can be miniaturized.

Also, considering the use of a fishing rod (front hook, rear hook, FIG. 5) connected to the lure split ring, the lure split ring has a circular cross-sectional shape, so the fishing rod connected to the luer split ring When the ring portion of the fishing rod contacts the inner peripheral surface of the split ring for luer, the inner peripheral surface of the ring portion of the fishing rod is in contact at one point all the time. Therefore, even if the ring part of the fishing rod is connected to the split ring for luer, the inner peripheral surfaces will be in one point contact with each other and there will not be two points contact, so the movement (degree of freedom) of the fishing rod after connection may be impeded. There is no natural vibration or noise.

According to the third aspect of the present invention, since the opposing surfaces obtained by the double spiral winding of the split ring for luer are made flat, it is possible to bring the metal wires into close contact with each other in a state in which they are sufficiently in close contact with each other. . In particular, according to the present invention obtained after processing even if the total cross-sectional area of the two spirally wound portions before the processing of the metal wire and the total cross-sectional area after the processing of the metal wire become substantially circular are substantially the same. In the lure split ring, a tight overlapping surface is formed in which a constricted space (see FIG. 7) between the first and second turns does not occur. That is, since the first and second turns are in a state of facing each other in a plane, they can be downsized by an approximate length, and the ideal lure split ring has a circular cross section and no waste in shape. can get.

In particular, while the luer split ring has two circular cross sections before processing, it has one circular cross section after processing. In addition, since the outer diameter can be made thicker than the wire diameter before processing, the strength can be surely increased. Further, since the cross-sectional shape can be simplified from two circular cross sections to one circular cross section, the size can be efficiently reduced. In addition, this type of processing can be manufactured by various processing methods. For example, if a metal wire spirally wound twice as a material is cold-formed, it is possible to manufacture a lure split ring having a desired shape.

According to the invention of claim 4, since both ends of the flat surface of the processed metal wire are bent, a gap is generated between the opposing surfaces of the bent portions, and the gap is a split ring plier or the like. It becomes an insertion guide part suitable for inserting a projection of a tool, and the opening operation of the split ring for luer becomes easy.

(A) is a plan view, (B) is a front view, and (C) is a cross-sectional view taken along the line AA of (A), of the split ring for luer of the present invention. (A) is a perspective view which shows the metal wire before processing of the split ring for luers of this invention, (B) is a perspective view which shows the state of the metal wire after processing. (A) of the metal wire used for the split ring for lure of the present invention, an explanatory view showing the same cross-sectional area with different shapes before and after processing, and (B) showing an overlapping shape before and after processing FIG. (A) of the split ring for lure according to the present invention is an explanatory view in the form of a vertically elongated oval in which the shapes before and after processing are overlapped, and (B) is a horizontally elongated oval in which the shapes before and after processing are overlapped. FIG. (A) of the split ring for luer of this invention is a side view which shows a use condition, (B) is a principal part expansion explanatory view which shows a one-point contact state. It is a table comparing and showing the test result of intensity with a split ring for lure of the present invention, and a split ring for conventional lure. (A) is a top view, (B) is a front view, and (C) is an essential part sectional view showing a state in which two points are in contact with each other in the conventional split ring for luer.

Hereinafter, the present invention will be described according to the illustrated embodiments. FIG. 1 shows a split ring for luer 10 (hereinafter referred to as split ring) 10. This split ring 10 is spirally wound twice so that high strength spring stainless steel wires (hereinafter referred to as metal wires) 11 overlap with each other. The outer peripheral surface of the cross section orthogonal to the winding direction of the ring halves 13 symmetrical with respect to the flat surface 12 is a convex arc shape (the figure shows a plan view). It is provided so that it may become semicircle 14).

The split ring 10 has a structure in which the flat surfaces 12 of the ring halves 13 are brought into plane contact with each other, and the two ring halves 13 facing each other are provided in close contact with each other. Furthermore, the ring half 13 has a convex circular arc 14 on the outer peripheral surface, so the cross-sectional shape after processing has a flat surface 12 on the opposing surface, but the convex circular arc 14 on the outer peripheral surface makes the cross section a semicircular ring In the split ring 10, the ring halves 13 are combined to form a circular cross-sectional shape. Therefore, the appearance of the split ring 10 obtained as a product looks as if it were a round metal wire with one turn, but the substance has a spirally wound structure twice.

1A and 1B, the spirally wound upper end surface 15 of the ring half 13 is exposed in a semicircular shape on the upper surface of the split ring 10 and the spirally wound lower end surface 16 of the ring half 13 on the lower surface. Represents a semicircular exposure. Further, as can be understood from the cross-sectional view of FIG. 1C, the upper ring half 13 and the lower ring half 13 are provided symmetrically in the upper and lower half circles.

These ring halves 13 are obtained by cold forming the round metal wire 11 into a semicircular cross section, and FIG. 2 (A) shows the twice spirally wound metal wire 11 of the split ring 10 before pressing. FIG. 2 (B) shows the finished product of the split ring 10 after pressing. In this split ring 10, two metal wires 11 overlapping one on top of the other before processing are integrated into one after processing, which indicates that the diameter is larger than the diameter of the metal wire 11 before processing.

The changing state of the cross-sectional shape of the split ring 10 will be specifically described with reference to FIG. The upper part of FIG. 3A shows a twice spirally wound metal wire 11 which is a material before processing, and the cross sectional areas S1 and S2 of the upper and lower diameters d1 and the total height h1 of two times spiral winding Represents The cross-sectional shape of the split ring 10 after processing is shown in the lower part of FIG. 3A, and the radius r1 (corresponding to the half height of the ring half 13) of the split ring 10, the diameter d2, and the cross-sectional area thereof S1 and S2, a total height h2 having the same size as the diameter d2, and a plane width W of an opposing surface on which the ring halves 13 face each other are shown.

Here, comparing the cross-sectional areas of the split ring 10 before and after processing, as shown in FIG. 3B, the cross-sectional shape changes from two circles before processing to one circle after processing. The total cross-sectional area (S1 + S2) of the above is the same, and the diameter after processing is larger (d1 <d2) compared to that before processing, and the height is smaller (h1> h2). Thus, after processing, the cross section becomes one circle, and the diameter d2 after this processing and the plane width W of the facing surface of the ring half 13 become the same dimension, and become larger than the diameter d1 of the metal wire 11 before processing. .

Furthermore, as shown in an enlarged view in FIG. 1B, in the ring half body 13, a portion where the flat surface 12 and the convex arc shape 14 intersect is formed in the bent portion 17. Since the bent portions 17 are separated from each other from the flat surface 12 in the facing portion where the two pieces face each other, a very small gap is generated between the facing surfaces of the bent portions 17 to insert the projection 18 of the tool such as split ring pliers. It is a suitable insertion guide portion 19.

FIG. 4 (A) shows a split ring 10 having a cross-sectional shape of a longitudinally long oval shape, and FIG. 4 (B) shows a split ring 10 having a cross-sectional shape of a horizontally long oval shape. Needless to say, even when the cross-sectional shape is an ellipse, the flat surfaces 12 of the ring half 13 are brought into contact with each other, so that it is possible to obtain the same effect as that of the case of a circle. In particular, in FIGS. 4A and 4B, the total height h3 of the metal wires 11 after processing is lower while the sectional height is the same as that of the total height h1 of the metal wires 11 before processing. can do. Therefore, the cross-sectional shape may be selected and used according to the purpose of use, such as when it is desired to further increase the strength in the longitudinal direction and the lateral direction of the split ring 10. In addition, when the cross-sectional shape of the split ring 10 is rectangular, the smooth resistance in water is impeded, and since it tends to be an unnatural movement, a circular cross-section or a cross-sectional oval is preferable.

FIG. 5A shows an example in which the split ring 10 is applied to the luer 50, and the split ring 10 is attached to the front wire eye 52 and the rear wire eye 53 fixed to the luer body 51, respectively. The front hook 54 and the rear hook 55 are connected to each other.

When the split ring 10 is attached to the front wire eye 52, as shown in the enlarged view of FIG. 1B, the tip 18 of a tool such as a split ring pliers is inserted into the V shape of the split ring 10 When the guide portion 19 is faced, the pointed end 18 of the tool is inserted and guided to an appropriate position, and if it is pressed as it is, the opposing surfaces of the flat surfaces 12 are opened and this opened portion is opposed to the front wire eye 52 When it is received, the split ring 10 is connected to the front wire eye 52 as shown in FIG. 5 (B). Further, also in the case where the front hook 54 is connected to the split ring 10, if the facing surfaces of the split ring 10 are similarly opened, and the ring portion 54a of the front hook 54 is passed through this opened portion, FIG. The front hook 54 is connected to the split ring 10 as shown in FIG.

In the used state of the split ring 10 connected so as to connect the front wire eye 52 and the front hook 54, the split ring 10 has a circular cross section in which the ring halves 13 are joined together. The front wire eye 52 is in contact with one point on the circumferential surface 14a (the upper side in FIG. 5B), and in use it corresponds to a single point contact and does not disturb the movement of the split ring 10 can get.

Similarly, with respect to the front hook 54, the ring portion 54a of the front hook 54 is in contact with one point on the inner peripheral surface 14a of the split ring 10 (the lower side in FIG. 5B). It is possible to obtain a smooth connection always in response to the contact and not preventing the movement of the front hook 54.

As described above, the split ring 10 has a circular cross section with little resistance in water, and has no step on the inner circumferential surface 14a, and does not contact at two points, so both the front wire eye 52 and the front hook 54 after connection are connected. There is no possibility of causing a contact resistance that hinders the movement (degree of freedom) or generation of unnatural vibration or abnormal noise in water based on two-point contact.

FIG. 6 shows split ring 10 (5.75φ) in which metal wire 11 (0.75φ) of experimental material SUS304WPB is spirally wound twice (5.5φ) and then pressed to press-form the cross-sectional shape into ring halves 13. 4 is a table showing the strength before molding (before pressing) and the strength after molding (after pressing) in the forming process of 2.). The test method adopted a screw type universal tensile tester, and measured the maximum load of both at a test speed of 100 mm / min.

In FIG. 6, the strength measurement curves P1 to P3 in which the split ring 10 after molding is tested three times are indicated by solid lines, and the strength measurement curves P4 to P6 in which the split ring before molding are tested three times are indicated by broken lines. P1 to P6 indicate values when a seam is present on the load vector at the time of tensile test.

After molding, the maximum load for tensile test is P1: 42.7 kgf,
P2: 42.3 kgf,
P3: A tensile test result of 44.8 kgf was obtained.

On the other hand, before molding, the maximum load for tensile test is P4: 23.9 kgf,
P5: 23.1 kgf,
P6: A 24.6 kgf tensile test result was obtained.

As a result, it was found that the strength measurement curves P1 to P3 of the split ring 10 after molding were higher in strength than the strength measurement curves P4 to P6 before the split ring molding. That is, if the cross-sectional shape of the split ring is such that two circles as shown in FIG. 7C overlap, a V-shaped constricted space 71a occurs on both sides of the inner periphery of the contact surface due to line contact. Although the shape can not be changed even after processing, in the example of the present invention, as shown on the lower side of FIG. 3 (A), the shape after processing slightly increases in diameter due to the difference in contact structure, and Since they are efficiently integrated into one, it is possible to realize high strength as well as downsizing.

As described above, with regard to the increase in the strength and the miniaturization of the split ring 10, the cross-sectional shape of the split ring 10 for the luer is improved in that the split ring 10 is manufactured like a single round metal wire with a circular cross section. It is a thing. That is, without using a large diameter for the material of the metal wire 11, it can be processed to be thick while being the same material as the conventional one to enable high strength, and the cross-sectional shapes can be put together into one circle to enable the overall miniaturization. To obtain a split ring 10 capable of achieving both high strength and small size. Furthermore, the contact portion of the inner circumferential surface 14a to which the split ring 10 is connected is not a two-point contact, but is a structure that enables realization of one-point contact, so only high strength and miniaturization can be satisfied. Not only that, since it also has a characteristic that it is possible to improve the contact performance when the split ring 10 is connected, a high performance split ring for luer 10 can be obtained.

DESCRIPTION OF SYMBOLS 10 ... Lure split ring 11 ... Metal wire 12 ... Plane 13 ... Ring half body 14 ... Convex

circular arc shape

14a, 72a, 73a ... Inner peripheral surface 15 ... Spiral winding upper end surface 16 ... Spiral winding lower end surface 17 ... Curved part 18 ... Protrusions of tools 19 ... Insertion guide portion 50 ... Lure 51 ... Lure body 52 ... Front wire eye 53 ... Rear wire eye 54 ...

Front hook

54a, 55a, 74a ... Ring portion 55 ... Rear hook 71 ... Lure split ring 71a ... Neck space 72 1st turn round metal wire 73 2nd turn round metal wire 74 fishing rod 75 fishing line d1, d2 diameter S1, S2 cross sectional area h1, h2 total height r1 radius W plane width P1, P2, P3 ... Strength measurement curve after molding P4, P5, P6 ... Strength measurement curve before molding

Claims

A ring-shaped split ring for luer spirally wound twice so that metal wires overlap each other,
A split ring for luer characterized in that the shape of the cross section orthogonal to the winding direction of the metal wire is a single circular shape.
The lure split ring according to claim 1, wherein a shape of a cross section orthogonal to the winding direction of the overlapping metal wires is semicircular.
The split ring for a lure according to claim 1, wherein the facing surfaces of the metal wires are formed in a flat surface.
The lure split ring according to any one of claims 1 to 3, wherein both widthwise end portions of the facing surface of the metal wire are bent.