JP2023178841A - Fishing lure - Google Patents

Abstract

To develop a fishing lure, even when using a sinker made of a high specific-gravity and paramagnetic material such as a tungsten, using it without any special specifications and approximating hold of the sinker in a simple constitution.SOLUTION: A fishing lure 1 comprises a sinker 13 freely movable in the longitudinal direction, provided in a lure body 10 imitating a fish body, and a holding piece K capable of loosely holding the sinker 13 having moved forward, provided in a moving space 12 of the sinker 13 in the lure body 10. The holding piece K includes a magnet piece 15, and a shielding cap 14 that covers the front and a peripheral trunk of the magnet piece 15 and makes the rear open. Meanwhile, the sinker 13 is formed of a high specific-gravity and paramagnetic material that inevitably contains ferromagnetic material, and the sinker 13 is magnetically attracted to the magnet piece 15 constituting the holding piece K in a loosely held state.SELECTED DRAWING: Figure 1

Description

The present invention relates to a fishing lure, and more particularly, to an improvement of a fishing lure in which the center of gravity of the lure can be set at different positions during casting and during retrieval after landing on the water. It is.

Fish-like lures generally have a line connected near the head and multiple hooks below the abdomen or near the tail. In order to receive the water flow and cause these movements, a lip is provided at the bottom of the head that projects downward.

Since such a lure assumes a slightly forward-sloping underwater posture when diving, it is preferable that its center of gravity is located toward the front.
On the other hand, during casting, it is preferable that the center of gravity be located toward the rear (near the tail) in order to stabilize the posture and increase flight distance.

For this reason, in order to set the preferred center of gravity for each lure, there are many ways to move the weight within the lure body, positioning the weight toward the rear (closer to the tail) when casting, and holding the weight forward when retrieving. Proposed.
Most basically, a concave groove is provided in front of the lure body to allow the weight to be placed after landing on the water, or a magnetic material such as a steel ball is used as the weight to hold the magnet toward the front. It has been practiced to arrange magnet pieces that are similar to each other (see, for example, Patent Documents 1 and 2).

Among these, weights that hold the weight magnetically can be held securely, but the weight material is limited to ferromagnetic materials such as steel balls. Therefore, in order to obtain a certain weight effect, the diameter must be larger than when using other high-density metals (mostly paramagnetic, which does not attract magnetism), and accordingly, when designing the lure shape, There were limits or restrictions.

In addition, a magnet for magnetically attaching a ferromagnetic material such as a steel ball with a large diameter naturally requires a stronger magnetic force, so the magnetic force of this magnet is spread over a wide range, and When a ferromagnetic material is magnetized by a magnet, this ferromagnetic material also becomes magnetized, and as a result, the magnetic force of the magnet extends over a wider area.
For this reason, the hook may become magnetically attached to a ferromagnetic material such as a magnet or a steel ball through the lure body. This will end up being a problem.

Of course, recognizing these problems, there have been attempts to coat the surface of the weight with magnetic metal and hold the weight using magnetic force, while applying high specific gravity and paramagnetic metal materials such as tungsten ( For example, see Patent Document 3).
However, such weights with special specifications require high production costs, and may not be possible in the first place due to the production facilities themselves.
Furthermore, in this prior art, in order to hold the weight by magnetic force, the weight must be held in a loose holding state so that it can be moved backward as necessary, and therefore, a spacer is used to limit the attraction force by magnetic force. etc. are required separately.

In this way, conventional product development has been based on the technical concept of adding a separate metal to the weight in order to magnetically hold a weight made of a high-density, paramagnetic material such as tungsten.

Patent No. 4472834 Patent No. 3299184 Japanese Patent Application Publication No. 2005-287359

The present invention was made in consideration of this background, and even when a weight made of a high specific gravity and paramagnetic material such as tungsten is applied, it can be used without special specifications. The objective was to develop a fishing lure with a simple structure and appropriate weight retention.

In other words, the fishing lure according to claim 1 is a fishing lure that is provided with a weight movable in the front and back direction within a lure body imitating a fish body, and wherein the weight is movable in the forward and backward directions in the movement space of the weight within the lure body. The holding piece includes a magnet piece and a shielding cap that covers the front side and circumferential body of the magnet piece and leaves the rear side open; It is made of a high-density, paramagnetic material that inevitably contains a ferromagnetic material, and is characterized in that a weight is magnetically attached to a magnet piece constituting the holding piece in a loosely held state.

Further, in the fishing lure according to claim 2, in addition to the above-mentioned requirements, the weight is provided with a weight core hole, and a guide core line is provided along the longitudinal direction of the moving space of the lure body, and the weight is characterized in that it is movably supported by a guide core wire in a weight core hole.

In addition to the above requirements, the fishing lure according to claim 3 is characterized in that the magnet piece is made of a neodymium magnet.

A fishing lure according to a fourth aspect of the present invention is characterized in that, in addition to the above requirements, the weight is made of tungsten or an alloy containing tungsten as a main component.
The above-mentioned problems are solved by using the requirements described in each of the claims as means.

First, according to the invention described in claim 1, since the weight is formed of a high specific gravity and paramagnetic material that inevitably contains a ferromagnetic substance, by magnetically attaching a small amount of the ferromagnetic substance contained therein, The center of gravity of the lure can be held loosely at a position suitable for causing the lure to dive and swing due to the action of the lip.
The holding piece that loosely holds the weight includes a magnet piece and a shielding cap that covers the front and circumference of the magnet piece and leaves the rear open. In the installed state, the lines of magnetic force do not extend outside the lure body, so it is possible to avoid a situation where the hook becomes magnetically attached.

Further, according to the invention as set forth in claim 2, the sliding area between the weight and other members can be made extremely small, the durability of these members can be improved, and the weight can be moved smoothly. I can do it.

Further, according to the third aspect of the invention, the magnetic force of the magnet piece is made sufficient, so that the weight inevitably containing a ferromagnetic substance can be magnetically attached.

Further, according to the fourth aspect of the present invention, the weight can be magnetically attached to the holding piece without increasing the size while achieving a certain weight effect.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially cutaway side view and a front view of the fishing lure of the present invention. A perspective view (a) showing a holding piece, a weight, and its peripheral members, a rear view (b) and a longitudinal side view (c) showing a holding piece, and a longitudinal side view (d) showing the state of magnetic lines of force in a single magnet piece. It is. FIG. 4 is a side view showing how the weight moves step by step. Partially cutaway side view (a) showing the state of the cast fishing lure in flight; Partially cutaway side view (b) showing the state when it lands on the water; Partially cutaway side view showing the state at the start of retrieval. They are a partially broken side view (c) and a partially broken side view (e) showing a state during steady retrieval. FIG. 2 is a partially cutaway side view of fishing lures with different shapes of moving spaces.

The embodiments of the present invention include examples described below as preferred embodiments, and also include various modifications within the technical concept of the present invention.

The present invention will be specifically described below based on illustrated embodiments.
Reference numeral 1 in the figure indicates a fishing lure of the present invention, which has an external shape imitating a small fish, and is constructed by, for example, attaching a hook H to a hook eye 18 provided near the abdomen and tail. .
More specifically, as shown in FIG. 1, the fishing lure 1 includes a lure body 10 made of resin as a component thereof, and most of these lures have a lure body 10 made of resin, as shown in FIG. 1(b). It is constructed by combining a body element 10a and a body element 10b, which are divided into left and right parts when viewed from the front, in a so-called mid-position arrangement.

Further, the head of the lure body 10 shown in this embodiment is provided with a line eye 19, and a lip 11 is formed to protrude downward and forward so as to diagonally go downward and forward. Note that depending on the specifications of the fishing lure 1, the lure body 10 may have a form in which the lip 11 is not formed.
Here, the front and rear refer to the head side of the lure body 10 imitating a fish body as the front, and the tail side as the rear.

Furthermore, a hollow moving space 12 is formed inside the lure body 10, and the weight 13 is configured to be able to move along the longitudinal direction of the lure body 10 within this moving space 12.
On the front side of this moving space 12, for example, inside a portion corresponding to the pectoral fin or pelvic fin of the lure body 10, a holding piece K that can loosely hold the weight 13 that has moved forward is provided. , which will be described in detail later, includes a magnet piece 15 and a shielding cap 14.

Further, in the embodiment shown in FIGS. 1 and 4, a guide core wire 12A is provided in the moving space 12 along the longitudinal direction, and a weight core hole 13A provided in the core of the weight 13 is penetrated by the guide core wire 12A. The weight 13 is supported in such a manner that the weight 13 can be slidably moved using the guide core wire 12A as a guide.
Of course, the movement of the weight 13 is not necessarily limited to the combination structure of the guide core wire 12A and the weight core hole 13A, and may also be a simple tunnel-shaped movement space 12 as shown in FIG.
Note that the guide core wire 12A or the rear end of the moving space 12 is provided with a cushion C made of an elastic material such as a suitable rubber material.
Further, when assembling the holding piece K, the guide core wire 12A, and the cushion C to the lure body 10, for example, ribs are provided in the moving space 12, and these members are positioned and held by the ribs.

Further, in this embodiment, the magnet piece 15 is enclosed in a shielding cap 14 made of, for example, a soft magnetic material, thereby forming a so-called cap magnet. As shown in FIG. 2, the shape of the shielding cap 14 is such that it covers the front side and circumference of the magnet piece 15 and leaves the rear side open, and the front side of the magnet piece 15 is magnetically attached to the inside thereof. This is what makes it a connotative state. In this state, the dimensions are set so that a slight gap P is formed between the inner circumference of the shielding cap 14 and the outer circumference of the magnet piece 15, as shown in FIG. 2(b). By adopting such a configuration, as shown in FIG. 2(c), lines of magnetic force (from the north pole to (toward the S pole) concentrates, so as shown in FIG. 2(d), an attraction force 3 to 4 times greater than that of the magnet piece 15 when used alone can be obtained. Note that a magnet piece core hole 15A is formed in the center of the magnet piece 15.

Here, the materials of the main components of the fishing lure 1 of the present invention will be explained.
First, as the magnet piece 15, for example, a rare earth magnet having a magnetic force ten times or more than that of a ferrite magnet is used, and in particular, a neodymium magnet, which is relatively inexpensive and has a strong magnetic force, is used. Note that if there are no restrictions in terms of price, etc., other rare earth magnets such as samarium cobalt magnets, which have the second strongest magnetic force after neodymium magnets, may be used.
The shielding cap 14 is made of a soft magnetic material with a low coercive force and a high magnetic permeability, and examples thereof include iron and alloys containing iron as a main component (silicon steel, permalloy, sendust, etc.). Permendur etc.) are adopted.

Further, the weight 13 is made of a material with high specific gravity that inevitably contains a ferromagnetic material, and tungsten is used as an example.
Note that tungsten with high purity (99.999% or more) exhibits slight magnetism when the magnet piece 15 is brought close to it, but exhibits paramagnetic properties that will not cause it to be magnetically attached.
However, the purity of industrially obtained normal tungsten is 99.95 to 99.99%, and it inevitably contains ferromagnetic (soft magnetic) iron, alkali metals, radioactive elements, etc. , it is magnetically attached to rare earth magnets etc. with strong magnetic force.
As the material for the weight 13, in addition to one that inevitably contains a ferromagnetic material, a tungsten-based sintered alloy containing tungsten as a main component and nickel, copper, iron, or the like as a binder can also be used.

By constructing these members from such materials, the weight 13 is magnetically attached to the holding piece K and is loosely held there.
The reason why I say "loosely held" here is because, as will be explained in detail later, when casting, the weight 13 is released from being held by the holding piece K and the weight 13 is positioned toward the rear (close to the tail) within the movement space 12. This is because a gentle holding state is adopted without a strong holding state so that the operation can be performed with a slight rod action or during a series of casting operations.

The fishing lure 1 of the present invention has the configuration described above, and is used by locking the swivel S tied to the tip of the line L to the line eye 19, and operates as follows. Thus, the position of the center of gravity G suitable for casting or retrieving can be obtained.

First, before the angler starts the casting operation, the weight 13 is either positioned at the rear end of the moving space 12 as shown in FIG. 3(a), or held close to the center as shown in FIG. 3(c). It may be in any state where it is loosely held by the piece K.
Even when the weight 13 is loosely held by the holding piece K, due to the centrifugal action caused by the subsequent casting operation, or when the fishing lure 1 is suspended in the air by the line L with the line eye 19 side up, a slight rod is attached to the fishing lure 1. By applying vibration through the action, a state in which the weight 13 is located at the rear end of the moving space 12 can be obtained.

The fishing lure 1 cast in this manner flies with the tail side facing forward, as shown in FIG. 4(a). At this time, since the center of gravity G is located on the tail side, , the flight attitude is stabilized, and the desired and sufficient flight distance can be obtained.

Eventually, the fishing lure 1 will land on the water as shown in Figure 4(b), but at this time, the center of gravity G is located on the tail side, so it will float with the tail side submerged in the water. . Of course, depending on the specifications, some lures may slowly submerge into the water without floating, but in any case, the fishing lure 1 at this point is in a state with its tail side facing downward.

Next, the angler starts a retrieving operation, and by winding the reel, the line L is wound and the fishing lure 1 is attracted. At this time, as shown in FIG. 4(c), due to the action of the lip 11, the fishing lure 1 assumes a forward-downward posture. As a result, the weight 13 that was present on the tail side moves within the movement space 12 and moves toward the holding piece K side as shown in FIG. 3(b).

Eventually, as shown in FIGS. 4(d) and 3(c), when the weight 13 approaches the holding piece K, the ferromagnetic material (soft magnetic material) contained in the weight 13 is excited by a strong neodymium magnet. . As a result, the weight 13 is magnetically attached to the holding piece K and is loosely held, and the center of gravity G of the fishing lure 1 is located at a position closer to the head from the longitudinal center of the lure body 10. This means maintaining a slightly forward-leaning posture.

After that, the angler adds rod actions such as twitching and jerking in addition to retrieving, and the fishing lure 1 repeatedly changes direction and speed rapidly, but when the weight 13 is gently attached to the holding piece K. The holding state is maintained, and the position of the center of gravity G is also maintained.
Incidentally, even if the loose holding state of the weight 13 by the holding piece K is released due to an unexpected speed change, etc., the fishing lure 1 will continue to dive due to the action of the lip 11 accompanying the angler's rod action. Since the weight 13 is tilted forward, the loose holding state of the weight 13 by the holding piece K is immediately restored.

Note that the holding piece K has lines of magnetic force (directed from the north pole toward the south pole) concentrated in a narrow range between the exposed rear end face of the magnet piece 15 and the rear end face of the shielding cap 14. When installed in the movement space 12 of the lure body 10, the lines of magnetic force do not extend outside the lure body 10, so it is possible to avoid a situation where the hook H is magnetically attached to the holding piece K via the lure body 10. This is expected to result in better fishing results.

1 Fishing lure 10 Lure body 10a Body element 10b Body element 11 Lip 12 Moving space 12A Guide core wire 13 Weight 13A Weight core hole 14 Shielding cap 15 Magnet piece 15A Magnet piece core hole 18 Hook eye 19 Line eye

C Cushion G Center of gravity H Hook K Holding piece L Line P Gap S Swivel

Claims (4)

A fishing lure that is equipped with a weight that can be moved in the front and back direction within a lure body that imitates a fish body,
A holding piece that can loosely hold the weight that has moved forward is provided in the movement space of the weight within the lure body,
This holding piece consists of a magnet piece and
It includes a shielding cap that covers the front and circumference of the magnet piece and leaves the rear open.
On the other hand, the weight is formed of a high specific gravity and paramagnetic material that inevitably includes a ferromagnetic material,
A fishing lure characterized in that a weight is magnetically attached to a magnet piece constituting the holding piece in a loosely held state.
The weight includes a weight core hole,
On the other hand, in the moving space of the lure body, a guide core line is provided along the longitudinal direction of the lure body.
The fishing lure according to claim 1, wherein the weight is movably supported by a guide core wire in a weight core hole.
3. The fishing lure according to claim 1, wherein the magnet piece is a neodymium magnet.
4. The fishing lure according to claim 1, wherein the weight is made of tungsten or an alloy containing tungsten as a main component.

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