JP4828337B2 - Lure - Google Patents

Description

  The present invention relates to a lure used for fishing. More particularly, the present invention relates to a gravity center moving lure.

  Largemouth bass, yellowtail and their juveniles, large fish such as sea bass and squid feed on small fish as baits. These large fish and squid are called fish eaters. Lure fishing is widely used as a means of capturing fish eaters. In lure fishing, lures are used. The lure flies in the air by being cast, and eventually reaches the water. The lure swims underwater as the line is wound. The fish eater who misunderstood this lure as bait bites the lure. The hook attached to the lure pierces the fish eater and the fish eater is picked up.

  An angler may want to cast a lure far away. As mentioned above, lures fly in the air. During flight, the lure receives air resistance. Lures with low air resistance can be cast far away.

  Japanese Patent Laid-Open No. 2001-299154 discloses a gravity center moving lure. In this lure, the weight built in the body can move in the front-rear direction. When flying in the air, the weight is located on the rear side (that is, the tail side). In other words, the center of gravity of the lure during flight is rearward. The lure flies with the tail at the head. Since the air resistance in this flight position is small, the lure can be cast away. After landing, the weight is pulled by the magnet and moves to the front side. Underwater, the weight is located on the front side. In other words, the center of gravity of the lure in water is forward. This barycentric position contributes to a preferable underwater posture.

  The lure used for squid fishing is called “Egi”. The egi includes a body, an eye, a needle part, and a weight. The body has a form similar to shrimp. A line is tied to the eye. The egi that has been cast and landed sinks toward the seabed. This operation is called “fall”. When the fishing rod is squeezed upward, the egi moves upward at a high speed by being pulled by the line. This operation is called “jump”. If the tip is continuously moved left and right while the line is wound, the egi moves in a zigzag. This operation is called “dirt”. By these actions, squid misunderstands Egi as bait and hugs Egi. At this time, the squid catches the squid, and the squid is picked up.

  The settling posture of egi greatly depends on the position of its center of gravity. The egi with the rear center of gravity sinks while keeping the head and tail level. On the other hand, the egi with the front center of gravity sinks while the head is positioned below the tail. The settling speed of egi also depends greatly on the position of its center of gravity. The egi with the rear center of gravity sinks slowly. On the other hand, an egi with its front center of gravity sinks quickly. The width when moving in a zigzag (hereinafter referred to as “dirt width”) also greatly depends on the position of the center of gravity of the egi.

  The angler selects an egi with an appropriate center of gravity according to the conditions such as tide speed, water temperature, squid activity, and bait type. The angler must prepare multiple egi with different positions of the center of gravity. This is a burden for anglers.

  Tuning of the center of gravity may be performed by the angler. Specifically, the barycentric position of the egi can be changed by winding the thread weight around a predetermined position of the body or the weight. This winding work is a burden for the angler. Further, since the amount and position of the thread weight is left to the angler's intuition, it is impossible to set the center of gravity accurately.

On page 240 of the “2005 Shimano Fishing Tackle Catalog” issued by Shimano Co., Ltd. on January 28, 2005, a center-of-gravity moving egi (ie, lure) is disclosed. The egi includes a bolt attached to the body and a weight into which the bolt is screwed. By rotating the weight, the weight can move in the front-rear direction. By moving the weight, the center of gravity of the egi moves. This movement changes the underwater posture of the egi.
JP 2001-299154 A "2005 Shimano Fishing Tackle Catalog"

  In the lure disclosed in Japanese Patent Laid-Open No. 2001-299154, the position of the center of gravity at the time of flight is different from the position of the center of gravity in water. However, the position of the center of gravity in water is constant. In other words, it is difficult for this lure to change the underwater posture.

  In the egi disclosed on page 240 of “2005 Shimano Fishing Tackle Catalog”, the position of the center of gravity in water can be changed. However, this change needs to be made by the angler before casting. After the angler sets the position of the center of gravity, the position of the center of gravity is constant from the time of casting until the completion of retrieval. When the center of gravity is set at a position where emphasis is placed on the underwater posture and action, the flight posture of this egi is not preferable from the viewpoint of air resistance.

  An object of the present invention is to provide a lure capable of obtaining a preferable flight posture and changing the underwater posture.

The lure according to the present invention is
(1) body,
(2) The outer cylinder attached to this body,
(3) An inner cylinder housed in the outer cylinder and movable in the front-rear direction with respect to the outer cylinder; and (4) Housed in the inner cylinder and moved in the front-rear direction in the inner cylinder. A weight is provided.

  Preferably, a female screw is threaded on the inner peripheral surface of the outer cylinder, and a male screw is threaded on the outer peripheral surface of the inner cylinder. The female screw and the male screw are screwed together. The inner cylinder can move relative to the outer cylinder by the rotation of the outer cylinder or the inner cylinder. Preferably, the outer cylinder is provided with a notch on the outer peripheral surface. A part of the outer peripheral surface of the inner cylinder is exposed in this notch. By applying a force to the exposed portion, the inner cylinder rotates.

  Preferably, the lure further comprises a stopper. When the weight is magnetically attached to the stopper, the weight can be prevented from moving. Preferably, the stopper is accommodated in the inner cylinder and is located near the front end of the inner cylinder.

  In the lure according to the present invention, the weight is in the rear position during flight. This lure flies with the tail at the head. The air resistance at this time is small. This lure provides a great flight distance. After landing, the weight moves to the front position. In this lure, the front position can be changed by moving the inner cylinder relative to the outer cylinder. The underwater posture and action can be changed by changing the forward position.

  Hereinafter, the present invention will be described in detail based on preferred embodiments with appropriate reference to the drawings.

  FIG. 1 is a front view showing an egi 2 as a lure according to an embodiment of the present invention. In FIG. 1, the left side is the front side of Egi 2, and the right side is the rear side of Egi 2. The egi 2 includes a body 4, a fixed type weight 5, a gravity center moving means 6, a fin 8, an eye 10, and a needle portion 12.

  The shape of the body 4 is similar to shrimp. The body 4 is made of wood or synthetic resin. The surface of the body 4 may be colored. A pattern may be drawn on the surface of the body 4. The coloring and pattern contribute to appeal to the squid. A cloth may be wound around the body 4 and the cloth may be colored. A weight 5 is fixed to the body 4. A gravity center moving means 6 is attached to the body 4. Most of the center-of-gravity moving means 6 is accommodated in the body 4. A part of the center-of-gravity moving means 6 is exposed below the body 4. The center-of-gravity moving means 6 is forwardly lowered.

  The fin 8 is made of a synthetic resin or the like. The fin 8 is fluffy. The fin 8 is joined to the body 4 by means such as an adhesive. The fin 8 contributes to appeal to the squid.

  The eye 10 is located at the front end of the body 4. The eye 10 is formed by bending a metal wire. The end of the metal wire is embedded in the body 4 and is firmly fixed to the body 4. A line is connected to the eye 10.

  The needle portion 12 is located at the rear end of the body 4. The needle portion 12 includes a shaft 14, a front needle 16, and a rear needle 18. The front end of the shaft 14 is embedded in the body 4 and is firmly fixed to the body 4. The front needle 16 extends forward from the middle of the shaft 14. A large number of front needles 16 are arranged radially. The rear needle 18 extends forward from the rear end of the shaft 14. A large number of rear needles 18 are arranged radially. The front needle 16 and the rear needle 18 are tapered. When the squid hugs the egi 2, the squid tentacles are caught by the front needle 16 or the rear needle 18. Thereby, squid is caught.

  2 is an enlarged cross-sectional view showing the center of gravity moving means 6 of the egi 2 of FIG. 1, and FIG. 3 is an exploded view thereof. 2 and 3, the left-right direction is the front-rear direction of the egi 2. The center-of-gravity moving means 6 includes an outer cylinder 20, an inner cylinder 22, a stopper 24, and a movable weight 26.

  The outer cylinder 20 is watertightly fixed to the body 4 (see FIG. 1). The outer cylinder 20 cannot move with respect to the body 4. The cross-sectional shape of the outer cylinder 20 is a circle. The outer cylinder 20 includes a notch 28. The notch 28 is formed on the front side of the outer cylinder 20 and below. The outer cylinder 20 includes a female screw 30 on the rear side of the inner peripheral surface thereof.

  The inner cylinder 22 is accommodated in the outer cylinder 20. The inner cylinder 22 is watertight. The cross-sectional shape of the inner cylinder 22 is a circle. The outer diameter of the inner cylinder 22 is substantially equal to the inner diameter of the outer cylinder 20. The inner cylinder 22 includes a male screw 32 on the rear side of the outer peripheral surface thereof. The male screw 32 is screwed with the female screw 30. When the inner cylinder 22 rotates forward, the inner cylinder 22 is propelled by the screws 30 and 32, and the inner cylinder 22 moves rearward with respect to the outer cylinder 20. When the inner cylinder 22 rotates in the reverse direction, the inner cylinder 22 is propelled by the screws 30 and 32, and the inner cylinder 22 moves forward with respect to the outer cylinder 20. In FIG. 2, the rear end of the inner cylinder 22 is in contact with the rear end of the outer cylinder 20.

  The inner cylinder 22 includes a knurled portion 34 on the front side of the outer peripheral surface thereof. The knurled portion 34 includes a large number of muscle peaks and a large number of muscle grooves. A high coefficient of friction is achieved by the knurled portion 34. A part of the inner cylinder 22 is exposed from the outer cylinder 20 through the notch 28. The knurled portion 34 is exposed in the notch 28.

  The stopper 24 has a disk shape. The stopper 24 is accommodated in the inner cylinder 22. The stopper 24 is located in the vicinity of the front end of the inner cylinder 22. The stopper 24 is fixed to the inner cylinder 22. The stopper 24 is a magnet. Preferred magnets include ferrite magnets and rare earth magnets. From the viewpoint of obtaining a large magnetic force, a rare earth magnet is preferable. Specific examples of rare earth magnets include neodymium magnets and samarium-cobalt magnets.

  The weight 26 is accommodated in the inner cylinder 22. The weight 26 is a sphere. The outer diameter of the weight 26 is slightly smaller than the inner diameter of the inner cylinder 22. The weight 26 can move in the front-rear direction in the inner cylinder 22. The egi 2 may include two or more weights 26. The weight 26 is made of a magnetically adherent material. In the present invention, magnetic adhesion means the property of being attracted to a magnet. The weight 26 is magnetically attached to the stopper 24. The movement of the weight 26 is prevented by the magnetic attachment.

  FIG. 4 is an enlarged sectional view showing the center-of-gravity moving means 6 of the egi 2 of FIG. In FIG. 4, the front end of the inner cylinder 22 is in contact with the front end of the outer cylinder 20. As is clear from the comparison between FIG. 4 and FIG. 2, in FIG. 4, the weight 26 is located forward.

  In the transition from the state shown in FIG. 2 to the state shown in FIG. 4, the angler pushes the knurled portion 34 (see FIG. 3) so that the inner cylinder 22 rotates in the reverse direction. Since the inner cylinder 22 is screwed with the outer cylinder 20, the inner cylinder 22 gradually moves forward with the reverse rotation of the inner cylinder 22. In the transition from the state shown in FIG. 4 to the state shown in FIG. 2, the angler pushes the knurled portion 34 so that the inner cylinder 22 rotates forward. Since the inner cylinder 22 is screwed with the outer cylinder 20, the inner cylinder 22 gradually moves backward as the inner cylinder 22 rotates forward. The inner cylinder 22 may be positioned between the position shown in FIG. 2 and the position shown in FIG. The position of the inner cylinder 22 can vary steplessly. As the position of the inner cylinder 22 changes, the positions of the stopper 24 and the weight 26 also change.

  FIG. 5 is a front view showing the use state of the egi 2 of FIG. In FIG. 5, the inner cylinder 22 is located at the rearmost position. In other words, the inner cylinder 22 is in the state shown in FIG. The position of the weight 26 is also relatively rearward. Therefore, the center of gravity of Egi 2 is rearward. The egi 2 sinks in water while maintaining a substantially horizontal posture. In this posture, since the resistance of water is large, Egi 2 sinks at a low speed.

  In FIG. 5, an arrow A <b> 1 indicates a settling direction when the egi 2 sinks in a state where the line 36 connected to the eye 10 is tensioned. What is indicated by the symbol α is the settling angle at that time. In Egi 2 whose center of gravity is at the rear, the settling angle α is small.

  When the angler continuously moves the tip from side to side while winding the line 36, the egi 2 moves in a zigzag manner. The egi 2 with the rear center of gravity moves with a small dirt width.

  When the target is an squid with a slow settling speed, an egi 2 with a small settling angle, or an egi 2 with a small dirt width, the inner cylinder 22 is located at the rear and the weight 26 is located at the rear. It is advantageous to be placed in

  FIG. 6 is a front view showing another use state of the egi 2 of FIG. In FIG. 6, the inner cylinder 22 is located closest to the front. In other words, the inner cylinder 22 is in the state shown in FIG. The position of the weight 26 is also closer to the front and rear. Therefore, the center of gravity of Egi 2 is closer to the front. The egi 2 sinks in water while maintaining a posture in which the tail 40 is higher than the head 38. In this posture, the resistance of water is small, so Egi 2 sinks at high speed.

  In FIG. 6, an arrow A <b> 2 indicates a sinking direction when the egi 2 sinks while a tension is applied to the line 36 connected to the eye 10. What is indicated by the symbol β is the settling angle at that time. In Egi 2 whose center of gravity is at the front, the sinking angle β is large.

  When the angler continuously moves the tip from side to side while winding the line 36, the egi 2 moves in a zigzag manner. The egi 2 with the front center of gravity moves with a large dirt width.

  When the target is a squid with a fast settling speed, an egi 2 with a large settling angle, or an egi 2 with a large dirt width, the inner cylinder 22 is located forward and the weight 26 is forward. It is advantageous to be placed in

  FIG. 7 is an enlarged sectional view showing the center-of-gravity moving means 6 of the egi 2 of FIG. In FIG. 7, as in FIG. 2, the rear end of the inner cylinder 22 is in contact with the rear end of the outer cylinder 20. In FIG. 7, the weight 26 is located at the rear end of the inner cylinder 22. In the present invention, the most rearward position that the weight 26 can take in relation to the inner cylinder 22 is referred to as a “rear position”. When a force that exceeds the magnetic force between the stopper 24 and the weight 26 is applied to the weight 26, the weight 26 can move away from the stopper 24 and move to the rear position.

  When this egi 2 is cast, centrifugal force is applied to the weight 26. Due to this centrifugal force, the weight 26 moves away from the stopper 24 and moves to the rear position. During the flight of Egi 2, due to inertia, the weight 26 remains in the rear position. When the weight 26 is in the rear position, the center of gravity of the egi 2 is extremely rearward. Egi 2 flies in a position with the tail at the top. The air resistance at this time is small. With this Egi 2, a great flight distance can be obtained.

  After landing, the weight 26 moves forward due to the gravity center moving means 6 being forwardly lowered. Further, the weight 26 is attracted to the stopper 24 and is magnetically attached to the stopper 24. In the present invention, the most forward position that the weight 26 can take in relation to the inner cylinder 22 is referred to as a “front position”. The positional relationship between the weight 26 at the front position and the outer cylinder 20 depends on the position of the inner cylinder 22. When the egi 2 takes action in the water when in the forward position, the weight 26 does not move because it is magnetically attached to the stopper 24. When the egi 2 is cast again, the weight 26 moves to the rear position by centrifugal force.

From the viewpoint that the center of gravity can be changed significantly, the weight 26 is preferably made of a magnetically adherent material having a high specific gravity. As a preferable magnetic adhesion material, an alloy formed by sintering a powder containing the following components is exemplified.
(1) Nickel (Ni) of 3 mass% or more and 15 mass% or less
(2) 4 mass% or more and 15 mass% or less of iron (Fe)
(3) Tungsten (W) of 50 mass% or more and 93 mass% or less
(4) Inevitable impurities The main component of this powder is W. Since the specific gravity of W is large, the weight 26 having a large specific gravity can be obtained by using W. The ratio of W is preferably 70% by mass or more, more preferably 80% by mass or more, and particularly preferably 85% by mass or more. In this weight 26, magnetic adhesion is expressed by Fe and Ni.

A particularly preferable material for the weight 26 is an alloy formed by sintering a powder containing the following components.
(1) Nickel (Ni) of 3 mass% or more and 15 mass% or less
(2) 4 mass% or more and 15 mass% or less of iron (Fe)
(3) Tungsten (W) of 50 mass% or more and 93 mass% or less
(4) 0.5% by mass or more and 10% by mass or less of cobalt (Co) or copper (Cu)
(5) Inevitable impurities

  In this egi 2, since the weight 26 can take various forward positions, the center of gravity in water can be changed. In this egi 2, since the weight 26 takes a rear position during flight, a large flight distance can be obtained. One weight 26 has both a center-of-gravity changing function for changing the underwater posture and a center-of-gravity changing function for flying distance.

  The inner cylinder 22 may move relative to the outer cylinder 20 by a mechanism other than the screws 30 and 32. The weight 26 may be made of a magnet, and the stopper 24 may be made of a magnetic material. The friction coefficient of the inner cylinder 22 may be increased by means other than knurling.

  FIG. 8 is a front view showing a minnow 42 as a lure according to another embodiment of the present invention. The minnow 42 includes a body 44, an eye 46, a first hook 48 and a second hook 50. The minnow 42 further includes the center-of-gravity moving means 6 shown in FIGS. The center-of-gravity moving means 6 includes an outer cylinder 20, an inner cylinder 22, a stopper 24, and a movable weight 26. As the inner cylinder 22 rotates, the inner cylinder 22 can move in the front-rear direction with respect to the outer cylinder 20. The weight 26 can move in the front-rear direction in the inner cylinder 22.

  When the minnow 42 is in water, the weight 26 is magnetically attached to the stopper 24. In other words, the weight 26 is in the forward position. The position of the weight 26 depends on the position of the inner cylinder 22 with respect to the outer cylinder 20. When the inner cylinder 22 is positioned rearward with respect to the outer cylinder 20, the front position of the weight 26 is also rearward. Therefore, the center of gravity of the minnow 42 is rearward. When the inner cylinder 22 is located in front of the outer cylinder 20, the front position of the weight 26 is also in front. Therefore, the center of gravity of the minnow 42 is closer to the front. In the minnow 42, the position of the center of gravity can be changed by the movement of the inner cylinder 22. By changing the position of the center of gravity, the underwater posture and swimming of the minnow 42 can be changed.

  When the minnow 42 is cast, a centrifugal force that exceeds the magnetizing force between the stopper 24 and the weight 26 is applied to the weight 26, so that the weight 26 moves away from the stopper 24 and moves to the rear position. During the flight of the minnow 42, due to inertia, the weight 26 remains in the rear position. When the weight 26 is in the rear position, the center of gravity of the minnow 42 is extremely rearward. The minnow 42 flies in a posture with the tail at the head. The air resistance at this time is small. With this minnow 42, a large flight distance can be obtained. In the minnow 42, one weight 26 has both a center-of-gravity changing function for changing the underwater posture and a center-of-gravity changing function for flying distance.

  The center-of-gravity moving means described above can be used not only for egi and minnow but also for various lures.

FIG. 1 is a front view showing an egi as a lure according to an embodiment of the present invention. FIG. 2 is an enlarged cross-sectional view showing the center of gravity moving means of the egi of FIG. FIG. 3 is a partially cutaway exploded view showing the center of gravity moving means of the egi of FIG. FIG. 4 is an enlarged cross-sectional view showing the center of gravity moving means of the egi of FIG. FIG. 5 is a front view showing a state in which the egi of FIG. 1 is used. FIG. 6 is a front view showing another use state of the egi of FIG. FIG. 7 is an enlarged cross-sectional view showing the center of gravity moving means of the egi of FIG. FIG. 8 is a front view showing a minnow as a lure according to another embodiment of the present invention.

Explanation of symbols

2 ... Egi 4, 44 ... Body 5 ... Fixed weight 6 ... Center of gravity moving means 10, 46 ... Eye 12 ... Needle part 20 ... Outer cylinder 22 ...・ Inner cylinder 24 ... Stopper 26 ... Moveable weight 28 ... Notch 30 ... Female screw 32 ... Male screw 34 ... Knurled portion 42 ... Minot 48 ... 1st hook 50 ... 2nd hook

Claims (4)

body,
The outer cylinder attached to this body,
This has the outer cylinder is housed are housed in the inner tube and the inner tube can be moved back and forth with respect to the outer tube, provided with a weight which can move in the longitudinal direction at inside of the inner tube And
A female screw is threaded on the inner peripheral surface of the outer cylinder, and a male screw is threaded on the outer peripheral surface of the inner cylinder. A lure in which the inner cylinder can move relative to the outer cylinder by the rotation of the inner cylinder . The outer cylinder is provided with a notch on the outer peripheral surface, and a part of the outer peripheral surface of the inner cylinder is exposed in the notch so that a force is applied to the exposed portion so that the inner cylinder rotates. lure according to structure claims 1. Further comprising a stopper, lure according to claim 1 or 2 movement of the weight by weight on the stopper is magnetically attracted can be prevented. The lure according to claim 3 , wherein the stopper is accommodated in the inner cylinder and is located near the front end of the inner cylinder.

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