JP7193440B2 - Curved body for fishing equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to a curved body used for various fishing gear. Here, the curved body corresponds to, for example, a handle arm attached to various fishing reels, a bail of a spinning reel, a ring to which a ball net is attached, and the like.

A tubular body with a hollow interior is sometimes used for fishing gear. A straight-shaped handle arm (carbon handle) is introduced. If the handle arm is made of a fiber-reinforced resin material, the weight can be reduced, and if the inside is made hollow, the weight can be reduced further.

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By the way, recently, in order to improve the rotational balance by bringing the handle arm closer to the reel main body side, or to improve the design, a curved handle arm is sometimes attached. If the handle arm is made of fiber-reinforced resin, and if it is straight, prepreg sheets with reinforcing fibers oriented mainly in the axial direction (longitudinal direction of the handle arm) are laminated to improve rigidity. However, when it is formed in a curved shape, problems arise if it is formed into a laminated structure similar to that of a straight handle arm.

Specifically, buckling stress is likely to act on the inside of the curved shape, and wrinkles such as fiber turbulence are likely to occur. On the other hand, since the handle arm is a part that receives a large load when hoisting the hook with a fish hooked on it, if it does not have sufficient bending rigidity, it may break or break. In particular, both ends of the handle arm are required to have sufficient flexural rigidity because both ends of the handle arm serve as rotation bases, handle knobs are attached, and a large load acts thereon.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a curved body for fishing gear which does not cause deterioration in strength and appearance.

In order to achieve the above object, a curved body for fishing equipment according to the present invention is formed by laminating prepreg sheets in which reinforcing fibers are impregnated with synthetic resin, and the outermost layer has reinforcing fibers at ±45°. It is composed of a knitted prepreg sheet, the innermost layer is composed of a prepreg sheet in which reinforcing fibers are knitted at 0 ° / 90 ° or ± 45 °, and the intermediate layer between the outermost layer and the innermost layer is It is characterized by including a prepreg sheet in which reinforcing fibers are oriented in the axial direction.

According to the above-described curved body for fishing equipment, a prepreg sheet in which reinforcing fibers are knitted at ±45° is used as the outermost layer, so that when forming into a curved shape, the reinforcing fibers constituting the outermost layer can follow the curvature, and wrinkles are less likely to occur on the surface. In addition, even if a buckling stress is applied to the reinforcing fibers of the inner curved portion, sufficient strength can be secured, defects and wrinkles are suppressed, and a decrease in strength is suppressed. In addition, by using a prepreg sheet in which reinforcing fibers are woven at 0°/90° or ±45° for the innermost layer, sufficient strength can be secured in the innermost layer, resulting in a decrease in strength. is suppressed. Furthermore, an intermediate layer made of a prepreg sheet in which reinforcing fibers are oriented in the axial direction is disposed between the outermost layer and the innermost layer, thereby increasing rigidity and reducing strength while effectively reducing weight. It is possible to obtain a curved body that is free from damage (hardly damaged). In this case, the intermediate layer may include a prepreg sheet in which reinforcing fibers are oriented in an oblique direction (preferably 15° or more and less than 30°).

The curved body described above includes both hollow (tubular) and solid (solid) interiors. Further, the orientation direction of the reinforcing fibers is defined when the curved body is in a straight state before being bent, and when the curved body is formed, the direction along the curve is the axial direction, and the direction perpendicular to the axial direction. The direction is the circumferential direction.

ADVANTAGE OF THE INVENTION According to this invention, the curved body for fishing gears which does not lose strength is obtained.

1 is a side view showing a spinning reel for fishing equipped with a curved body (hollow handle) according to an embodiment of the present invention; FIG. FIG. 2 is a rear view of the fishing spinning reel shown in FIG. 1; FIG. 4 is a diagram for explaining the manufacturing process of the curved body, showing a prepreg sheet and a mandrel; Sectional drawing of the direction orthogonal to the axial direction of a curved body.

An embodiment of a curved body for fishing gear according to the present invention will be described below.
1 and 2 show a spinning reel for fishing as a fishing tool, and the curved body according to this embodiment is used in a handle portion (handle arm) that is rotatably operated.

First, an overview of the overall configuration of a spinning reel for fishing will be described.
A reel body 1 constituting a spinning reel for fishing is provided with a reel leg 1a mounted on a fishing rod. A spool 5 is movably supported and around which fishing line is wound.

A handle shaft (drive shaft) is rotatably supported in the reel body 1, and a handle 10 is attached to the projecting end thereof. A take-up drive mechanism is engaged with the handle shaft. As is well known, the take-up drive mechanism is attached to a handle shaft and meshes with a drive gear (drive gear) having internal teeth, and extends in a direction perpendicular to the handle shaft. and a pinion gear having an axially extending cavity formed therein.

A spool shaft that rotatably supports the spool 5 is inserted through the pinion gear so as to be axially movable back and forth. A known oscillating mechanism is engaged with the rear side of the spool shaft, and when the handle 10 is rotated, the spool 5 is reciprocated back and forth via the oscillating mechanism and the spool shaft. Further, the rotor 3 is fixed to the pinion gear by tightening a rotor nut on the front side of the pinion gear. As a result, when the handle 10 is operated to wind, the rotor 3 rotates, and the spool 5 reciprocates back and forth in synchronism with this rotation, so that the fishing line rotates together with the rotor 3. is wound around the spool 5 via the

The above-described handle 10 has a rotation base 10A attached to the handle shaft of the reel body at one end and a support portion 10B to which the handle knob 20 is attached at the other end, and is curved as shown in FIG. A handle arm (curved body) 12 is mounted between the rotation base 10A and the support 10B. By forming the handle arm 12 in a curved shape rather than in a straight line, the rotation operation position can be brought closer to the reel main body side, and it is possible to suppress the shake of the main body during the rotation operation. In this case, the handle arm 12 is made of a fiber-reinforced resin material (laminated structure of prepreg sheets) so as to reduce its weight. In particular, because of the curved shape, a large bending stress acts locally.
The handle arm 12 configured as a curved body and a method of manufacturing the same will be described below with reference to FIGS. 3 and 4. FIG.

The handle arm 12 of this embodiment is made by winding fiber-reinforced resin prepreg sheets 15, 16a, 16b, and 17 in order around a mandrel 30 having a predetermined length, and applying a heat-shrinkable tube 18 (or tightening tape) on the surface of the prepreg sheets 15, 16a, 16b, and 17. can be coated and heated while being bent at a predetermined angle.

In this case, if the matrix resin of the prepreg sheet wound around the mandrel is a thermosetting resin, it can be placed between a male mold and a female mold having pre-curved recesses, and the matrix resin can be cured while being heated. A curved body as a handle arm can be molded. Also, if the matrix resin is a thermoplastic resin, the mandrel 30 can be bent by applying heat and then cooled to form a curved body as a handle arm. As the matrix resin, it is preferable to use a thermosetting resin because the content of reinforcing fibers can be increased and the shape is stabilized.

The mandrel 30 is made of flexible resin and formed into a cylindrical shape, and the outer surface of the mandrel 30 is preferably centerless processed. By applying centerless processing, it is possible to keep the surface precision (smoothness) within about ±0.01 mm. It is possible to make the inner diameter highly accurate when it is assumed to be a tubular body.

The heat-shrinkable tube 18 covering the mandrel 30 around which the prepreg sheets 15, 16a, 16b, 17 are wound is made of a heat-shrinkable resin. preferably formed. Since the heat-shrinkable tube 18 made of such a fluororesin material has a smooth surface, the surface of the molded tubular body (the surface of the prepreg sheet of the outermost layer) is stabilized and finished smoothly. can be done. In this case, the thickness T of the heat-shrinkable tube 18 is in the range of 1 mm to 2 mm so that it can be axially press-fitted into the prepreg sheets 15, 16a, 16b, and 17 wound around the mandrel 30. It is good if it is formed by

The prepreg sheets 15, 16a, 16b, and 17 wound around the mandrel have a configuration in which reinforcing fibers are impregnated with a synthetic resin, and a plurality of such prepreg sheets are stacked and the resin is cured to form a curved shape. The handle arm 12 has a multilayer structure as shown in the cross-sectional view of FIG. For the sake of clarity, FIG. 4 shows an innermost layer 15A, an outermost layer 17A, and an intermediate layer 16A between the innermost and outermost layers.

The prepreg sheet that constitutes the innermost layer 15A and the outermost layer 17A is composed of one sheet, which may be a single layer (one turn) or multiple layers (more than one turn). ) may be Further, the prepreg sheet constituting the intermediate layer 16A may be a single sheet, a plurality of sheets, a single layer (one roll), or a plurality of layers ( number of turns greater than one turn).

Examples of the reinforcing fibers used in the prepreg sheet include carbon fiber, aramid fiber, glass fiber, alumina fiber, boron fiber, silicon carbide fiber, and the like. UD sheet), plain weave (woven fabric sheet used for the innermost and outermost layers), thermosetting resin such as epoxy resin, phenolic resin, unsaturated polyester resin, nylon, PP (polypropylene), PET (polyethylene terephthalate), PEEK (polyether ether ketone), PC (polycarbonate), PPS (polyphenylene sulfide), or the like.

The prepreg sheet 15 that constitutes the innermost layer 15A of the handle arm 12 of the present embodiment is a woven fabric woven of reinforcing fibers, specifically, woven in the axial direction and the circumferential direction (0° /90°) is used. In this case, the prepreg sheet 15 that constitutes the innermost layer 15A may be one in which reinforcing fibers are knitted. Alternatively, the winding may be oriented at ±45° with respect to the axial direction.

The prepreg sheet 17 constituting the outermost layer 17A of the handle arm 12 of the present embodiment is formed by knitting reinforcing fibers into a woven fabric, and the reinforcing fibers are oriented at ±45° with respect to the axial direction. It is wound in a state where

The prepreg sheet 15 constituting the innermost layer 15A and the prepreg sheet 17 constituting the outermost layer 17A are not formed by knitting reinforcing fibers in a woven fabric, but are oriented in an oblique direction. A prepreg sheet (UD sheet) may also be used.

An intermediate layer 16A is interposed between the outermost layer 17A and the innermost layer 15A. The intermediate layer 16A only needs to contain at least a prepreg sheet (UD sheet) 16a having reinforcing fibers oriented in the axial direction, and includes such a prepreg sheet (UD sheet) 16a oriented in the axial direction. As a result, the bending strength can be improved, and the rigidity at both ends (the rotation base 10A and the support portion 10B) where a large load acts particularly during rotation can be improved, making it possible to effectively suppress breakage. .

As for the intermediate layer 16A, in addition to the prepreg sheet 16a in which the reinforcing fibers are oriented in the axial direction, the intermediate layer 16A may include a prepreg sheet 16b in which the reinforcing fibers are inclined with respect to the axial direction. It may also include prepreg sheets (not shown) that are knitted together. By including such a prepreg sheet in which the reinforcing fibers are obliquely oriented, the buckling stress acting on the reinforcing fibers of the prepreg sheet 16a can be alleviated, and the occurrence of wrinkles and the like can be effectively suppressed. can be done.

In the above-described configuration, when using a prepreg sheet in which the reinforcing fibers are oriented in an oblique direction, the orientation direction is preferably less than 45° so as to improve strength (rigidity). It is preferably less than 30°. However, if the inclination angle is too small, buckling stress tends to act during bending, causing wrinkles and fiber breakage.

As described above, the number of turns of each of the prepreg sheets 15, 16a, 16b, and 17 may be one or more, but the number of turns (30 or less) may be set so as not to increase the weight. preferable. In addition, although the thickness of each prepreg sheet is not particularly limited, it is preferable to use a thickness of about 0.02 mm to 0.30 mm, more preferably about 0.05 mm to 0.15 mm for ease of handling. .

According to the handle arm 12 configured as described above, the heat-shrinkable tube 18 is covered from the top of the prepreg sheet and the heating and molding process is performed. Voids and resin withering do not occur on the surface, and the outside diameter of the handle arm 12 can be stabilized and high accuracy can be obtained, and the strength is also stabilized. In this case, the heat-shrinkable tube 18 may be removed by peeling, pulling out, splitting, or the like, or may be left as it is. When the heat-shrinkable tube is removed, the surface is not uneven (smoothed), so surface treatments such as polishing and painting can be minimized, and manufacturing costs can be reduced. Furthermore, by centerless processing the outer surface of the mandrel 30 and de-centering after heating and molding, the dimensional accuracy of the inner diameter of the handle arm 12 is improved, and it is matched with the rotation base 10A and the support portion 10B (fitting parts). Additional work can be minimized, and manufacturing costs can be reduced.

Further, according to the handle arm 12 having the laminated structure of the prepreg sheets described above, since the prepreg sheet 17 in which the reinforcing fibers are knitted at ±45° is used as the outermost layer, even if the surface is curved, Since the reinforcing fibers are oriented at ±45°, they can follow the curved surface without causing wrinkles or breaking the reinforcing fibers. In addition, even if buckling stress is applied to the reinforcing fibers of the inner curved portion, sufficient strength can be secured, defects and wrinkles are suppressed, and reduction in strength is suppressed. Furthermore, the appearance of the outer surface is improved, and it is possible to increase the torsional rigidity against stress in the torsional direction acting when the handle arm is rotated.
As for the prepreg sheet 17 constituting the outermost layer, a UD sheet in which the reinforcing fibers are oriented in an inclined direction may be used. can be increased.

In addition, since the innermost layer uses the prepreg sheet 15 in which the reinforcing fibers are knitted at 0 ° / 90 ° or ± 45 °, the strength against crushing and twisting can be improved, and the outermost layer Intermediate layers containing prepreg sheets 16a having reinforcing fibers oriented in the axial direction are disposed between the innermost layers, thereby effectively reducing the weight of the handle arm 12 without lowering its strength. is obtained.

The curved body described above may be used with the mandrel 30 de-cored after being subjected to heating and hardening treatment, or may be used without de-cored. In the former case, it becomes a tubular body (hollow body), which makes it possible to reduce the weight of the curved body. Become.

Moreover, the heat-shrinkable tube 18 may be finally peeled off, or may be used as it is as a curved tubular body (curved solid body) without being peeled off. By leaving the heat-shrinkable tube 18, both can be bonded by the adhesive force of the resin of the prepreg sheet, so there is no need to form a protective layer in a separate process, and the manufacturing cost can be reduced.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and can be modified in various ways.
In the above configuration, the handle of a spinning reel is exemplified as a fishing tool, but it can be applied to handle arms of various reels. Further, the curved body described above can be applied to various types of fishing equipment other than the handle arm, and the curvature and size thereof are not limited.

1 reel body (fishing equipment)
3 rotor 5 spool 10 handle 12 handle arm (curved body)
15, 16a, 16b, 17 prepreg sheet 18 heat-shrinkable tube 30 mandrel

Claims (4)

A curved body for fishing gear formed by laminating prepreg sheets in which reinforcing fibers are impregnated with a synthetic resin,
The curved body for fishing equipment is a handle arm for a spinning reel configured as a curved tubular body,
The outermost layer of the curved tubular body is composed of a prepreg sheet in which reinforcing fibers are knitted at ±45°,
The innermost layer of the curved tubular body is composed of a prepreg sheet in which reinforcing fibers are woven at 0°/90° or ±45°,
A curved body for fishing equipment, wherein an intermediate layer between the outermost layer and the innermost layer includes a prepreg sheet in which reinforcing fibers are oriented in the axial direction. The curved body for fishing equipment according to claim 1, wherein the intermediate layer includes a prepreg sheet in which reinforcing fibers are oriented in an oblique direction. 3. The fishing gear according to claim 2, wherein the prepreg sheet in which the reinforcing fibers are oriented in an oblique direction has the reinforcing fibers oriented at an angle of less than 30 degrees and 15 degrees or more with respect to the axial direction. curved body. The curved body for fishing equipment according to any one of claims 1 to 3, wherein a mandrel made of synthetic resin is provided inside the innermost layer.

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