JP2015173645A - lure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lure 1 capable of achieving a proper underwater posture and action on and after making a splashdown without sacrificing a flying distance.SOLUTION: A lure 1 includes a hollow body 2 having a head 12 at the front and a tail 14 at the rear, a weight 16 accommodated in the body 2 so as to move in a longitudinal direction, and a compression coil spring 18 incorporated in the body 2 for energizing the weight 16 frontward. When W represents the weight of the weight 16, and F represents the maximum energization force of the compression coil spring 18 in the body 2, the ratio F/W of the maximum energization force F to the weight W is 1.0-4.0.

Description

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

  Large fish such as largemouth bass, yellowtail and their juveniles, sea bass, etc. feed on small fish as baits. These large fish are called fish eta. Lure fishing is popular as a means of capturing fish eaters. Lures are used in lure fishing. A line is connected to the lure. The lure flies through the air by casting, and eventually reaches the water. The lure swims underwater when the line is wound. Fish eta who misunderstood this lure as bait bites into lure. The hook attached to the lure pierces the fish eater, and the fish eater is picked up.

  An angler may wish 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. A lure with an appropriate center of gravity has a stable flight posture and low air resistance.

  As mentioned above, the fish eater bites into this lure by mistaking it as bait. A lure that achieves an underwater posture and action that invites misunderstanding of the fish eater is preferred.

  Japanese Patent Application Laid-Open No. 2011-229423 discloses a center-of-gravity moving lure. In the body of the lure, a weight capable of moving in the longitudinal direction (front-rear direction) of the lure and an elastic member such as a coil spring for biasing the weight in the head direction (forward) are incorporated. .

  The lure flies by being cast, and the weight instantaneously compresses the compression coil spring due to inertia and moves to the tail side. The lure flies with the tail at the head. When the lure flies in the air, the weight is located on the tail side against the restoring force of the elastic member. That is, the center of gravity of the lure during flight is on the tail side. The lure slows down due to the resistance of yarn and air. As a result, the weight is pushed back to the head side by the elastic member. The position of the center of gravity during flight of the lure affects the flight distance of the lure. At the time of natural fall, the weight has already returned to the position on the head side, but the posture of the lure has the tail downward. The inventors have learned that the weight is moved to the tail side due to the impact received during landing, and the elastic member is compressed again by the weight. With a lure with a built-in weight, a long flight distance can be obtained by securing an appropriate center of gravity position during flight, and a desirable underwater posture and action can be obtained by securing an appropriate center of gravity position immediately after landing. is there.

JP 2011-229423 A

  The present invention has been made in view of the current situation, and at the same time as landing, without sacrificing the flight distance, an appropriate underwater posture and action for inviting misunderstanding of the fish eater can be achieved. The purpose is to provide.

The lure according to the present invention is
A hollow body having a front head and a rear tail;
A weight housed inside the body so as to be movable in the front-rear direction,
A guide member built in the body for guiding the movement of the weight in the front-rear direction;
An elastic member built in the body and biasing the weight forward.
When the weight of the weight is W and the maximum biasing force of the elastic member in the body is F, the ratio F / W of the maximum biasing force F to the weight W is 1.0 or more and 4.0 or less. It is said that.

  Preferably, the ratio F / W is 1.6 or more and 3.4 or less, and more preferably, the ratio F / W is 2.0 or more and 3.0 or less.

  The elastic member may be composed of a coil spring (so-called compression coil spring) extending in the front-rear direction behind the weight so as to be compressed by the weight moving backward due to inertia during casting. .

  In the lure according to the present invention, the weight that was on the tail side at the time of casting is returned to the head side by an appropriate elastic member, and the weight that has moved backward due to the impact of water landing can be quickly removed from the head side. Can be returned to. Therefore, with this lure, an appropriate underwater posture and action can be achieved within a short time after landing.

FIG. 1 is a front view showing a lure according to an embodiment of the present invention together with lines and hooks. FIG. 2 is a longitudinal sectional view of the lure of FIG. 3A is a cross-sectional view taken along line IIIA-IIIA in FIG. 2, and FIG. 3B is a cross-sectional view taken along line IIIB-IIIB in FIG. FIG. 4 is a front view showing the state when the lure of FIG. 1 is cast in chronological order. FIG. 5 is a longitudinal sectional view showing a lure according to another embodiment of the present invention. FIG. 6 is a longitudinal sectional view showing a lure according to still another embodiment of the present invention. FIG. 7 (a) is a longitudinal sectional view showing a lure according to still another embodiment of the present invention, and FIG. 7 (b) shows another state of the unit built in the lure of FIG. 7 (a). It is a longitudinal cross-sectional view shown.

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

  The lure 1 shown in FIG. 1 includes a body 2, a line eye 4, and three hook eyes 6. A hook 8 is attached to each hook eye 6. A line 10 is connected to the line eye 4. The body 2 has an outline similar to a small fish that is a bait. The body 2 includes a front head 12 and a rear tail 14. In the drawing, the right side is the head 12 side (front), the left side is the tail 14 side (rear), the upper side is the back side, and the lower side is the ventral side.

  The body 2 may include a lip on the head 12 side and on the ventral side. Typically, the body 2 is formed from a synthetic resin. A preferred synthetic resin is ABS resin. The body 2 may be made of a metal material or a wood material. The line eye 4 and the hook eye 6 are formed by bending a metal wire. A typical material for the metal wire is stainless steel. A part of the metal wire is embedded in the body 2, and the remaining part is exposed from the body 2. By embedding, the line eye 4 and the hook eye 6 are fixed to the body 2.

  As shown in FIG. 2, the body 2 is hollow. Typically, the body 2 is configured by joining a symmetrical left body piece 2L and a right body piece 2R in a superposed state (FIG. 3). Inside the body 2, a cylindrical weight 16 that is movable in the front-rear direction, an elastic member 18 that elastically biases the weight 16 toward the head 12, and the movement of the weight 16 is guided. A guide member 20 is provided. The specific gravity of the weight 16 is larger than the specific gravity of the body 2. Examples of the material of the weight 12 include lead, lead alloy, brass, tungsten, tungsten alloy, steel, and stainless steel.

  In this embodiment, the compression coil spring 18 is used as an elastic member. The reason why the coil spring 18 is called a compression coil spring is that it is compressed by the weight 16 but is not pulled. The compression coil spring 18 extends in the front-rear direction behind the weight 16 (on the tail 14 side). Typical materials for the compression coil spring 18 include steel, stainless steel, and copper alloy. A guide wire 20 is used as the guide member 20. The guide wire 20 generally extends in the front-rear direction (the so-called longitudinal direction connecting the head 12 and the tail 14). The guide wire 20 is formed from a metal wire. Typical materials for the guide wire 20 include steel, stainless steel, copper alloy, and titanium alloy. Surface treatment may be applied to the surface of the metal wire for the purpose of reducing frictional force.

  A wire insertion hole 22 is formed in the weight 16 along its central axis. A guide wire 20 is inserted into the wire insertion hole 22 and the compression coil spring 18. The weight 16 is not limited to a cylindrical shape, and may be a spherical shape, a prismatic shape, or the like. In FIG. 2, the weight 16 is located at the front end in the movement path (indicated by a solid line in FIG. 2). In this state, the compression coil spring 18 may be set to be in a free state where the compression deflection is zero, or may be set to be in a slightly compressed state. The compression coil spring 18 of the lure 1 is in a slightly compressed state. Further, when the compression coil spring 18 is in a free state, the weight 16 may be slightly separated from the front end position of the compression coil spring 18.

  A state in which the weight 16 is moved to the tail 14 side end (rear end) while compressing the compression coil spring 18 by inertia by casting the lure 1 is shown by a two-dot chain line. In the lure 1, the compression coil spring 18 is in close contact (total compression) when the weight 16 is located at the rear end. The distance between the front end position indicated by the solid line and the rear end position indicated by the two-dot chain line is the maximum moving distance of the weight 16. In FIG. 2, the front end position of the movement path of the weight 16 is immediately after the foremost hook eye 6, but is not limited to such a configuration. The front end position may be further forward.

  As shown in FIGS. 2 and 3A, the weight 16 and the compression coil spring 18 are, for example, an upper reinforcing rib 24U, a middle reinforcing rib 24M, a lower portion formed on the left and right inner surfaces of the body 2 in the front-rear direction. The outer periphery of the reinforcing rib 24L may be guided. These reinforcing ribs function as guide rails. As shown in FIG. 3B, both ends of the guide wire 20 are clamped and locked by ribs 26 projecting inwardly from the left and right inner surfaces of the body 2. Good. The ribs 26 can also serve as stoppers at the end portions before and after the moving path of the weight 16.

  FIG. 4 schematically shows the casting state of the lure 1 in time series from (1) to (6). (1) indicates the start of casting, (2) and (3) indicate the state in which the lure 1 is driven by the line 10, and (4) and (5) indicate that the lure 1 is released from the drive by the line 10 and glides. (6) shows where the lure 1 has landed.

  By casting, the body 2 flies, and the weight 16 instantaneously compresses the compression coil spring 18 due to inertia and moves to the tail 14 side ((1), (2), (3) in FIG. 4). . Luer 1 flies with tail 14 at the head. During the flight, the lure 1 is subjected to negative acceleration (deceleration) having a large absolute value due to the resistance of the yarn and air. As for the lure 1, the flight speed decreases, and the absolute value of the negative acceleration decreases as the descent begins. That is, the degree of deceleration of the lure 1 is reduced. As a result, the weight 16 is pushed back toward the head 12 by the compression coil spring 18 ((4) and (5) in FIG. 4).

  During gliding of the lure 1, the weight is moving from the head tail 14 toward the head 12. Thus, if the center of gravity of the lure 1 is slightly closer to the head 12 side than the head (tail 14), an angle of attack is generated in the lure 1 and lift is generated. As a result, since the lure 1 does not fall in a posture in which the tail 14 is lowered (a posture substantially parallel to the ballistic curve), it can be expected that the gliding distance of the lure 1 is extended. On the other hand, if the center of gravity moves to the head 12 before the top of the flight trajectory during gliding of the lure 1, the lure 1 rises too much and falls without extending the flight distance. On the contrary, when the lure 1 is gliding, if the movement of the center of gravity toward the head 12 side is slow, the tail 14 is lowered in the latter half of the flight trajectory, and the flight distance does not increase. Thus, the moving speed of the weight 16 is important for the flight distance of the lure 1.

  At the time of landing, the weight 16 has already reached the position on the head 12 side indicated by the solid line in FIG. 2 ((6) in FIG. 4). However, due to the impact from the water surface, the weight 6 momentarily compresses the compression coil spring 18 and moves to the tail 14 side. After landing, the weight 6 is pushed by the compression coil spring 18 and returns to the head side. If the weight 6 returns slowly to the head side after landing, the lure 1 is unlikely to take a posture and action that can quickly appeal to the fish eater. Thus, the moving speed of the weight 16 is important for the posture and action of the lure 1 after landing.

  In the present embodiment, the compression coil spring 18 is devised so that the weight 6 can instantaneously return to the head side after landing without sacrificing the flight distance. As a result, the user can fly the lure 1 to the target area and immediately swim the lure 1 in a good posture after landing.

  The compression coil spring 18 can be selected from various specifications. In the present embodiment, the following compression coil spring 18 is employed according to the weight of the weight 16. When the weight of the weight 16 is W and the maximum biasing force of the compression coil spring 18 in the body is F, the ratio F / W of the maximum biasing force F to the weight W is 1.0 or more and 4.0. It is as follows. In the case of the lure 1, the maximum urging force refers to a spring force (restoring force) when the compression coil spring 18 is in close contact. This is because the compression coil spring 18 is in close contact with the luer 1 when the weight 16 moves most toward the tail 14 side.

  If the ratio F / W is less than 1.0, the return of the weight 16 to the head 12 side is delayed during the gliding of the lure 1, and the flight distance may not be increased. Moreover, the return of the weight 16 that has moved to the tail 14 side due to the impact at the time of landing of the lure 1 to the head 12 side becomes slow, and it may be difficult to take an effective posture and action in a short time. There is. On the other hand, if the ratio F / W exceeds 4.0, the weight 16 is positioned on the head 12 side just before the top of the flight locus of the lure 1, and the lure 1 rises too much to increase the flight distance. There is a fear. From this point of view, the ratio F / W is preferably 1.6 or more and 3.4 or less. The ratio F / W is more preferably 2.0 or more and 3.0 or less.

  The above requirements regarding the ratio of the maximum biasing force F of the elastic member to the weight W of the weight 16 are also applied to the lures 28, 32, and 36 (FIGS. 5, 6, and 7) described later. . The minimum urging force of the compression coil spring 18 refers to a spring force when the weight 16 reaches the head 12 side end of the moving range. This minimum biasing force includes zero.

  FIG. 5 shows another lure 28. In the luer 28, a stopper 30 is provided in the vicinity of the tail 14 in the movement path of the weight 16 to prevent the weight 16 from moving in the direction of the tail 14. The axial length of the stopper 30 is longer than the contact length of the compression coil spring 18. The stopper 30 has an inner diameter that is smaller than the outer diameter of the weight 16 and slightly larger than the outer diameter when the compression coil spring 18 is in close contact. Therefore, the stopper 30 can prevent the movement of the weight 16 in the direction of the tail 14 and can also exert a displacement regulating action of the compression coil spring 18. This stopper 30 is used when avoiding compression until the compression coil spring 18 is in close contact. In the luer 28, the maximum biasing force of the compression coil spring 18 is a restoring force when the compression coil spring 18 is compressed until the length of the compression coil spring 18 reaches the length of the stopper 30, not at the time of close contact.

  The stopper 30 is also used to prevent the compression coil spring 18 from being displaced in the radial direction when the compression amount of the compression coil spring 18 is increased. Since the other configuration of the luer 28 is the same as that of the lure 1 of FIG. 2, the same members as those in FIG.

  FIG. 6 shows still another lure 32. In this lure 32, a tension coil spring 34 is used as an elastic member. Since the other structure is the same as the lure 1 of FIG. 2, the same code | symbol is attached | subjected to the same member as in FIG. 2, and the description is abbreviate | omitted. The tension coil spring 34 is disposed in front of the weight 16, and its rear end is connected to the weight 16. The front end portion of the tension coil spring 34 is attached to the body portion on the head 12 side further than the weight 16 at the front end position of the movement path.

  In this embodiment, the rear end portion of the tension coil spring 34 is connected to the upper surface of the weight 16. In this case, interference with the tension coil spring 34 is avoided by increasing the distance between the left and right upper reinforcing ribs 24U (FIG. 3A) for guiding the movement of the weight 16. In a state where the weight 16 is at the front end position of the movement path, the tension coil spring 34 may be set to have a free length or may be set to be in a slightly extended state. As the material of the tension coil spring 34, the same material as that of the compression coil spring 18 can be selected. In the case of the luer 32, the aforementioned maximum biasing force F refers to the spring force of the tension coil spring 34 when the weight 16 is located at the tail 14 side end. The spring force of the tension coil spring 34 when the weight 16 is positioned at the end on the head 12 side is referred to as a minimum biasing force.

  In the lure 32, the weight 16 is moved to a position on the tail 14 side indicated by a two-dot chain line in FIG. 6 while being extended by the inertia and the tension coil spring 34 is extended ((1) in FIG. 4). , (2), (3)). A negative acceleration (deceleration) having a large absolute value acts on the lure 32 in flight. As for the lure 1, the flight speed decreases, and the absolute value of the negative acceleration decreases as the descent begins. As a result, the weight 16 is pulled back to the head 12 side by the tension coil spring 34 ((4), (5) in FIG. 4). At the time of landing, the weight 16 reaches the position on the head 12 side indicated by the solid line in FIG. 6 ((6) in FIG. 4). The weight 16 moves to the tail 14 side due to the impact of the lure 1 upon landing. However, the weight 16 is quickly returned to the head 12 side by the tension coil spring 34 having an appropriately set specification. Is done.

  FIG. 7A shows still another lure 36. In this lure 36, both the weight 16 and the elastic member are accommodated in a casing 38 and unitized. The casing 38 serves as a guide member. The unit 37 may be fixed in the body 2 or configured to be detachable. In any case, it is preferable to project a rib for positioning the casing 38 on the inner surface of the body 2. The casing 38 is preferably formed of a transparent synthetic resin or the like in order to make it easy to visually recognize the inside. The front and rear ends of the casing 38 may be closed, and caps that can be opened and closed may be attached. As the elastic member, the compression coil spring 18 shown in FIG. 2 is employed. The compression coil spring 18 is inserted behind the weight 16 in a free state or slightly compressed state.

  FIG. 7B is a longitudinal sectional view of the unit 37, showing a state in which the weight 16 is pressed against the front end portion of the casing 38 by the compression coil spring 18. FIG. 7A shows a state where the weight 16 reaches the vicinity of the rear end of the casing 38 while compressing the compression coil spring 18 by inertia when the lure 36 is cast. The shape of the casing 38 may be cylindrical or rectangular. Since the other structure is the same as the lure 1 of FIG. 2, the same code | symbol is attached | subjected to the same member as in FIG. 2, and the description is abbreviate | omitted.

  Although not shown, it is easy to unitize the set of the weight 16 and the tension coil spring 34 shown in FIG. 6 in the casing 38 of FIG.

  Hereinafter, the effects of the present invention will be clarified by examples. However, the present invention should not be construed in a limited manner based on the description of the examples.

[Example 1]
A lure of Example 1 having the configuration shown in FIGS. 1 to 3 was obtained. The specifications of the lure center of gravity movement mechanism are as shown in Table 1. In the lure of Example 1, the compression coil spring shown in FIG. 2 is used as the elastic member. The material of the weight is a tungsten alloy, and the material of the compression coil spring is JIS G4314 SUS304WPB. “Maximum spring force F” in Table 1 refers to the maximum urging force F of the compression coil spring in the body described above. The “minimum spring force f” refers to the minimum biasing force of the compression coil spring in the body described above. The “weight movement distance” is the maximum movement distance described above, and is the maximum distance in the front-rear direction in which the weight can move within the body.

[Example 2-6, Comparative Examples 1 and 2]
The lures of Examples 2 to 6 having the configuration shown in FIGS. 1 to 3 and Comparative Examples 1 and 2 were obtained. The specifications of the lure center of gravity movement mechanism are as shown in Table 1. Specifications other than those shown in Table 1 are equivalent to the specifications of Example 1.

[Casting distance when casting]
The same person casts 10 times for each lure of Example and Comparative Example using the same fishing gear. The fishing rod is AR-C906 made by Shimano Co., Ltd. The reel is spinning type 4000. As the flight distance, the distance from the position of the casting person to the landing point of the lure was measured in a windless dome. The average value of the flight distance is calculated for each lure of the example and the comparative example, and this is indicated by an index in which the comparative example 1 is 8. A larger index value indicates a longer flight distance, which is preferable.

[Position after landing]
The same person naturally dropped each lure of the example and the comparative example from the tip of a fishing rod at a height of 3 m above the water surface onto the water surface using the same fishing tool. There are 10 drops for each lure. After the natural fall to the water surface, it was visually confirmed that the lure took an effective posture with the head slightly lowered from the level in water. The operator of the fishing tackle made a sensory evaluation on the time until the head was slightly lowered from the fall and the posture was slightly lowered, and on the quality of this posture. The evaluation is shown by an index with Comparative Example 1 being 7. The larger the index value, the better.

  As shown in Table 1, the lures of the examples have superior performance compared to the lures of the comparative examples. From this evaluation result, the superiority of the present invention is clear.

  The lure according to the present invention is suitable for fishing in various fields such as lakes, ponds, dams, rivers, and the sea.

1, 28,
32, 36 ... Lures
2 ... Body
4 ... Line Eye
6 ... Hook Eye
8 ... Hook 10 ... Line 12 ... Head 14 ... Tail 16 ... Weight 18 ... Compression coil spring 20 ... Guide wire 22 ... Wire insertion hole 24U ... Upper reinforcing rib 24M ... middle reinforcing rib 24L ... lower reinforcing rib 26 ... rib 30 ... stopper 34 ... tension coil spring 37 ... unit 38 ... casing

Claims (4)

A hollow body having a front head and a rear tail;
A weight housed inside the body so as to be movable in the front-rear direction,
A guide member built in the body for guiding the movement of the weight in the front-rear direction;
An elastic member built in the body and biasing the weight forward.
When the weight of the weight is W and the maximum biasing force of the elastic member in the body is F, the ratio F / W of the maximum biasing force F to the weight W is 1.0 or more and 4.0 or less. The lure is said to be.   The lure according to claim 1, wherein the ratio F / W is 1.6 or more and 3.4 or less.   The lure according to claim 2, wherein the ratio F / W is 2.0 or more and 3.0 or less.   The lure according to claim 1, wherein the elastic member is a coil spring extending in the front-rear direction behind the weight so that the elastic member is compressed by the weight moving backward during casting.

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