阅读说明：本技术 钓鱼用品用的弯曲体 (Curved body for fishing article ) 是由 川村拓司 渡边昌幸 富冈贵彦 于 2020-10-30 设计创作，主要内容包括：本发明提供一种不会产生强度下降、外观下降的钓鱼用品用的弯曲体。具体而言,本发明的钓鱼用品用的弯曲体通过对在强化纤维中浸渍有合成树脂的预浸胶片(15)、(16a)、(16b)、(17)进行层叠而形成。弯曲体的最外层由强化纤维被编成±45°的预浸胶片构成,最内层由强化纤维被编成0°/90°或±45°的预浸胶片构成,最外层和最内层之间的中间层包含强化纤维指向轴向的预浸胶片(16a)。(The invention provides a curved body for fishing articles, which does not cause strength reduction and appearance reduction. Specifically, the curved body for fishing gear of the present invention is formed by laminating prepreg sheets (15), (16a), (16b), and (17) in which synthetic resin is impregnated into reinforcing fibers. The outermost layer of the bent body is composed of prepreg sheets in which reinforcing fibers are woven at an angle of + -45 DEG, the innermost layer is composed of prepreg sheets in which reinforcing fibers are woven at an angle of 0 DEG/90 DEG or + -45 DEG, and the intermediate layer between the outermost layer and the innermost layer contains prepreg sheets (16a) in which the reinforcing fibers are oriented in the axial direction.)

1. A curved body for fishing goods, which is formed by laminating prepreg sheets in which synthetic resin is impregnated into reinforcing fibers,

the outermost layer is composed of prepreg sheets with reinforcing fibers woven at an angle of +/-45 degrees,

the innermost layer is formed by prepreg sheets with reinforcing fibers woven into 0 degrees/90 degrees or +/-45 degrees,

the intermediate layer between the outermost layer and the innermost layer comprises prepreg sheets with reinforcing fibers pointing in the axial direction.

2. A flexure for a fishing article according to claim 1, wherein the intermediate layer contains a prepreg sheet in which reinforcing fibers are oriented in an oblique direction.

3. A flexure for a fishing article according to claim 2, wherein the reinforcing fibers are oriented in an oblique direction with respect to the prepreg sheet, and the reinforcing fibers are oriented at less than 30 ° and 15 ° or more with respect to the axial direction.

4. A flexure for a fishing article according to any one of claims 1 to 3, wherein a synthetic resin core shaft is disposed inside the innermost layer.

5. A curved body for a fishing article according to any one of claims 1 to 3, wherein the curved body for a fishing article comprises a handle arm attached to a reel, a wire loop of a spinning reel, and a net loop of a net attached.

Technical Field

The present invention relates to a curved body used for various fishing articles. Here, the curved body corresponds to, for example, a handle arm attached to various fishing reels, a wire loop of a spinning reel, a net loop attached to a net, and the like.

Background

In some fishing products, a tubular body having a hollow inside is used, and for example, a straight-line shaped handle arm (carbon handle) made of Fiber Reinforced Plastic (FRP) is introduced as a customized product of a reel in URL (uniform resource locator, non-patent document 1) described below. When the handle arm is formed of a fiber-reinforced resin material, the weight can be reduced, and when the interior is further formed into a hollow shape, the weight can be further reduced.

Non-patent document

Non-patent document 1: www.naturum.co.jp

Disclosure of Invention

Recently, however, a curved handle arm is sometimes attached to the reel body in order to bring the handle arm closer to the reel body side to improve the rotational balance or to improve the design. When the handle arm is formed of a fiber-reinforced resin material, if the handle arm is formed in a straight shape, a prepreg sheet in which reinforcing fibers are oriented in the axial direction (the longitudinal direction of the handle arm) is mainly used in order to increase the rigidity, but when the handle arm is formed in a curved shape, inconvenience is caused when the handle arm is formed in a laminated structure similar to that of the straight handle arm.

Specifically, buckling stress is likely to act on the inner side of the curved shape, fiber disturbance is likely to occur, wrinkles are likely to occur, sufficient strength cannot be secured, and appearance is also degraded. On the other hand, since the handle arm is a portion to which a large load acts when the handle arm is rolled up in a fished state, if the handle arm does not have sufficient bending rigidity, the handle arm may be broken or broken. In particular, since the handle grip is attached to both end portions of the handle arm as the rotation base, a large load acts thereon, and thus sufficient bending rigidity is required.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a curved body for fishing gear which does not cause a decrease in strength or a decrease in appearance.

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

According to the aforementioned curved body for fishing gear, since the prepreg sheet in which the reinforcing fibers are woven at ± 45 ° is used as the outermost layer, the reinforcing fibers constituting the outermost layer can follow the curve when the curved body is formed, and therefore wrinkles are not easily generated on the surface portion. Further, even if buckling stress is applied to the reinforcing fibers in the inner curved portion, sufficient strength can be secured, and therefore, occurrence of defects, wrinkles, and the like can be suppressed, and occurrence of a decrease in strength can be suppressed. Further, since the prepreg sheet in which the reinforcing fibers are woven at 0 °/90 ° or ± 45 ° is used for the innermost layer, the strength of the innermost layer can be sufficiently ensured, and the occurrence of a decrease in strength can be suppressed. Further, since the intermediate layer formed of a prepreg in which the reinforcing fibers are oriented in the axial direction is disposed between the outermost layer and the innermost layer, the rigidity is increased, and thus a curved body which can be effectively reduced in weight and is free from a decrease in strength (less likely to cause breakage or the like) can be obtained. At this time, for the intermediate layer, a prepreg sheet in which reinforcing fibers are oriented in an oblique direction (preferably 15 ° or more and less than 30 °) may be included.

The curved body includes two forms, i.e., a hollow form (tubular body) inside and a solid form (solid body) inside. The direction of the reinforcing fibers is defined as the direction in a straight state before the bending of the bending body, and when the bending body is formed, the direction along the bending is the axial direction, and the direction perpendicular to the axial direction is the circumferential direction.

According to the present invention, a curved body for fishing equipment, which does not cause a decrease in strength, can be obtained.

Drawings

Fig. 1 is a side view showing a spinning reel for fishing on which a curved body (hollow handle) according to an embodiment of the present invention is mounted.

Fig. 2 is a rear view of the spinning reel for fishing shown in fig. 1.

Fig. 3 is a view illustrating a manufacturing process of a bent body, and shows a prepreg sheet and a mandrel.

Fig. 4 is a sectional view of a direction orthogonal to the axial direction of the bending body.

Description of the symbols

1-reel body (fishing article); 3-a rotor; 5-winding drum; 10-a handle; 12-handle arm (flexure); 15. 16a, 16b, 17-prepreg sheets; 18-heat shrink tubing; 30-mandrel.

Detailed Description

Next, an example of the curved body for fishing tackle according to the present invention will be explained.

Fig. 1 and 2 show a spinning reel for fishing as a fishing article, and the bending body according to the present embodiment is used as a handle portion (handle arm) for performing a rotation operation.

First, an overview of the overall structure of the spinning reel for fishing will be described.

A reel body 1 constituting a spinning reel for fishing is provided with a reel foot 1a attached to a fishing rod, and disposed in front of the reel foot: a rotor 3 rotatably supported; and a spool 5 supported to be movable forward and backward in synchronization with the rotational movement of the rotor 3 to wind the fishing line.

A handle shaft (drive shaft) is rotatably supported in the reel body 1, and a handle 10 is attached to a protruding end portion thereof. Further, a retraction driving mechanism is engaged with the handle shaft. As is well known, the retraction drive mechanism includes: a drive gear (Driver gear) mounted on the handle shaft and having internal teeth; and a pinion gear that engages with the drive gear, extends in a direction orthogonal to the handle shaft, and has a hollow portion formed therein and extending in the axial direction.

A spool shaft that rotatably supports the spool 5 is axially inserted through the pinion gear so as to be movable forward and backward. A known swing mechanism is engaged with the rear side of the spool shaft, and when the handle 10 is rotationally operated, the spool 5 reciprocates back and forth via the swing mechanism and the spool shaft. Further, the rotor 3 can be fixed to the pinion gear by tightening a rotor nut on the front side of the pinion gear. Thus, by the winding operation of the handle 10, the spool 5 reciprocates back and forth in synchronization with the rotation of the rotor 3 while the rotor 3 rotates, and the fishing line is wound around the spool 5 via a fishing line guide (line roller) rotating together with the rotor 3.

The handle 10 has a rotation base 10A attached to a handle shaft of the reel body at one end and a support portion 10B attached to a handle grip 20 at the other end, and a handle arm (curved body) 12 formed by bending is attached between the rotation base 10A and the support portion 10B as shown in fig. 2. Since the handle arm 12 is not formed linearly but curved, the rotational operation position can be brought close to the reel body side, and the runout of the body at the time of the rotational operation can be suppressed. In this case, the handle arm 12 is formed of a fiber-reinforced resin material (a laminated structure of prepreg sheets) in order to reduce the weight, but large bending stress acts on both end portions of the handle arm during rotation operation, and particularly large bending stress acts locally because the handle arm is formed in a curved shape.

Next, the handle arm 12 configured as a curved body and a method of manufacturing the same will be described with reference to fig. 3 and 4.

The handle arm 12 of the present embodiment is formed by winding prepreg sheets 15, 16a, 16b, 17 made of fiber-reinforced resin in this order around a mandrel 30 having a predetermined length, coating the surface thereof with a heat shrinkable tube 18 (or a fastening tape), and then heating the same while bending the same at a predetermined angle.

In this case, if the matrix resin of the prepreg wound around the mandrel is a thermosetting resin, a curved body as a handle arm can be formed by setting the resin between a male mold and a female mold having a concave portion which is curved in advance, and curing the matrix resin while heating. Further, if the base resin is a thermoplastic resin, a bent body as a handle arm can be formed by applying heat to bend the core shaft 30 and cooling it. Further, since the content of the reinforcing fiber can be increased and the shape can be stabilized, thermosetting is preferably used as the matrix resin.

The mandrel 30 may be a flexible mandrel formed in a cylindrical shape by a resin, and preferably, the outer surface thereof is processed in advance without a core (centressress). By performing the centerless processing, the accuracy (smoothness) of the surface can be made within about ± 0.01mm, and thereby the inner diameter when the wound prepreg is cured to form a tubular body (a tubular body is formed by depoling) can be made high in accuracy.

The heat shrinkable tube 18 covering the core 30 around which the prepreg sheets 15, 16a, 16b, 17 are wound is made of a heat-shrinkable resin, and is preferably made of a fluororesin (PTFE, PFA, ETFE, or the like). Since the surface of the heat shrinkable tube 18 made of such a fluororesin material is smoothed, the surface of the molded tubular body (the surface of the prepreg at the outermost layer) is stable and can be processed smoothly. At this time, the wall thickness T of the heat shrinkable tube 18 only needs to be formed in the range of 1mm to 2mm so that the heat shrinkable tube 18 can be pressed in the axial direction with respect to the prepreg sheets 15, 16a, 16b, 17 wound around the mandrel 30.

The prepreg sheets 15, 16a, 16b, and 17 wound around the core are formed by impregnating a synthetic resin into a reinforcing fiber, and as shown in the sectional view of fig. 4, the handle arm 12 formed by bending by stacking a plurality of such prepreg sheets and curing the resin can be formed into a multi-layer structure. For the sake of easy understanding, fig. 4 shows an innermost layer 15A and an outermost layer 17A, and an intermediate layer 16A is provided between the innermost layer and the outermost layer.

The prepreg sheets constituting the innermost layer 15A and the outermost layer 17A are each formed of 1 sheet of a single sheet (1 turn), or a plurality of sheets (more than 1 turn). The prepreg sheet constituting the intermediate layer 16A may be 1 sheet or a plurality of sheets, and may be a single layer (1 turn) or a plurality of layers (more than 1 turn).

Examples of the reinforcing fiber used for the prepreg sheet include carbon fiber, aramid fiber, glass fiber, alumina fiber, boron fiber, and silicon carbide fiber, and the reinforcing fiber can be formed by aligning the reinforcing fiber in one direction (UD sheet for intermediate layer), or by weaving the reinforcing fiber into plain cloth (woven cloth-like sheet for innermost and outermost layers), and impregnating the reinforcing fiber with thermosetting resin such as epoxy resin, phenol resin, and unsaturated polyester resin, thermoplastic resin such as nylon, PP (polypropylene), PET (polyethylene terephthalate), PEEK (polyether ether ketone), PC (polycarbonate), and PPs (polyphenylene sulfide).

The prepreg 15 constituting the innermost layer 15A of the handle arm 12 according to the present embodiment is a prepreg in which reinforcing fibers are woven into a fabric shape, specifically, a prepreg woven into (0 °/90 °) in the axial direction and the circumferential direction. In this case, the prepreg 15 constituting the innermost layer 15A may be a prepreg woven with reinforcing fibers, and may be wound in a state of being oriented in the axial direction and the circumferential direction (0 °/90 °), or in a state of being oriented at ± 45 ° with respect to the axial direction, for example.

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

In addition, a prepreg sheet (UD sheet) in which reinforcing fibers are oriented in an oblique direction may be used for the prepreg sheet 15 constituting the innermost layer 15A and the prepreg sheet 17 constituting the outermost layer 17A, instead of a prepreg sheet in which reinforcing fibers are woven into a fabric shape.

The intermediate layer 16A is interposed between the outermost layer 17A and the innermost layer 15A. The intermediate layer 16A only needs to include at least the prepreg (UD prepreg) 16A in which the reinforcing fibers are oriented in the axial direction, and by including such prepreg (UD prepreg) 16A in which the fibers are oriented in the axial direction, it is possible to improve the bending strength and to improve the rigidity at both end portions (the rotation base portion 10A and the support portion 10B) to effectively suppress breakage, the both end portions being subjected to a large load particularly during rotation.

The intermediate layer 16A may include, in addition to the prepreg 16A in which the reinforcing fibers are oriented in the axial direction, a prepreg 16b in which the reinforcing fibers are inclined with respect to the axial direction, or a prepreg (not shown) woven in a fabric shape. By including such prepreg sheets in which the reinforcing fibers are inclined, buckling stress acting on the reinforcing fibers of prepreg sheet 16a can be relaxed, and the occurrence of wrinkles and the like can be effectively suppressed.

In the above-described configuration, when a prepreg in which reinforcing fibers are oriented in an oblique direction is used, the orientation direction is preferably less than 45 °, and more preferably less than 30 ° in order to improve the strength (rigidity). However, when the inclination angle is too small, the bending process tends to be more prone to buckling stress, which may cause wrinkles or fiber breakage, and therefore, the inclination angle is preferably 15 ° or more.

The number of turns of the prepreg sheets 15, 16a, 16b, and 17 may be 1 turn or more as described above, but is preferably a number of turns (30 turns or less) to the extent that the weight is not increased. Although the thickness of each prepreg is not particularly limited, for convenience of handling, a prepreg of about 0.02mm to 0.30mm, more preferably about 0.05mm to 0.15mm, is preferably used.

According to the handle arm 12 having the above-described configuration, since the heat shrinkable tube 18 is wrapped over the prepreg to perform the heating and molding steps, uniform pressure is applied to the surface of the prepreg, and voids and insufficient resin are not generated on the surface of the molded material, so that the outer diameter dimension of the handle arm 12 is stable, high accuracy can be obtained, and the strength is also stable. In this case, the heat shrinkable tube 18 may be removed by peeling, pulling, splitting, or the like, or may be left as it is. When the heat shrinkable tube is removed, since unevenness is not generated (smoothed) on the surface, the surface treatment such as polishing treatment and coating can be suppressed to the minimum, and the production cost can be reduced. Further, by performing centerless machining on the outer surface of the mandrel 30 and performing core removal after heating and forming, the dimensional accuracy of the inner diameter of the handle arm 12 can be improved, and further, additional machining matching with the rotary base 10A and the support portion 10B (fitting parts) can be minimized, and the manufacturing cost can be reduced.

Further, according to the handle arm 12 having the prepreg laminated structure, since the prepreg 17 in which the reinforcing fibers are woven at an angle of ± 45 ° is used as the outermost layer, and the reinforcing fibers are directed at an angle of ± 45 ° even in a state where the surface is curved, the handle arm can follow the curved surface, and thus wrinkles or breakage of the reinforcing fibers are not generated. Further, even if buckling stress is applied to the reinforcing fibers in the bent portions on the inner side thereof, sufficient strength can be secured, generation of defects, wrinkles, and the like can be suppressed, and generation of strength reduction can be suppressed. Further, the appearance of the outer surface can be improved, and the torsional rigidity with respect to the torsional stress acting when the handle arm is rotated can be improved.

Further, a UD sheet in which reinforcing fibers are oriented in an oblique direction may be used for the prepreg sheet 17 constituting the outermost layer, and even such a prepreg sheet can improve the appearance of the outer surface and also improve the torsional rigidity.

Further, since the prepreg 15 in which the reinforcing fibers are woven at 0 °/90 ° or ± 45 ° is used for the innermost layer, the strength against compression and torsion can be improved, and since the intermediate layer including the prepreg 16a in which the reinforcing fibers are oriented in the axial direction is disposed between the outermost layer and the innermost layer, the handle arm 12 in which the weight can be effectively reduced and the strength is not lowered can be obtained.

The bent body may be used after heating and curing, with or without removing the core of the mandrel 30. In the former case, a tubular body (hollow body) can be formed and the weight can be reduced as a bent body, and in the latter case, since the core shaft (core material) 30 is present, a bent body having improved strength can be obtained.

The heat shrinkable tube 18 may be peeled off at the end, or may be used as a curved tubular body (curved solid body) without being peeled off. Since the residual heat shrinkable tube 18 can bond the prepreg and the heat shrinkable tube by the adhesive force of the resin of the prepreg, it is not necessary to form a protective layer by another process, and thus 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 various modifications are possible.

In the above-described configuration, the handle of the spinning reel is exemplified as the fishing tackle, but the present invention can be applied to handle arms of various kinds of reels. The curved body can be applied to various fishing articles other than the handle arm, and the curvature and size thereof are not limited.