JP2015133936A - Rod body for fishing rod, and fishing rod with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rod body for a fishing rod, the rod body facilitating the securing of a stable strength and a good beautiful appearance, and to provide a fishing rod provided with the same.SOLUTION: A rod body includes a body layer formed in a tubular shape from a prepreg. The body layer includes a front and rear different shape section consisting of: a first region 40 located in the front side, whose cross-sectional shape is a first shape; a second region 42 located in the rear side, whose cross-sectional shape is a second shape different from the first shape; and a shift region 41 located between the first region 40 and the second region 42, and having a cross-sectional shape gradually varying from the first shape to the second shape from the front side toward the rear side. The front and rear different shape section has a circumferentially divided layer made into a tubular shape by winding two or more prepregs having a length corresponding to the front and rear different shape section and a width less than one round winding in the second region 42 so as to be arranged in the circumferential direction while forming a layered portion.

Description

  The present invention relates to a fishing rod rod body and a fishing rod having the same.

  When the fishing rod is hollow, it is generally cylindrical, and therefore its cross-sectional shape is circular. However, there is a case where a part of the fishing rod is desired to have a shape different from the cylindrical shape. For example, when a grip portion is provided at the base of a fishing rod, there is a case where it is desired to improve grip performance by making the grip portion a polygonal cross-sectional shape instead of a cylindrical shape.

  In such a case, it is conceivable that a grip housing having a polygonal cross-sectional shape is formed as a separate body, and this is joined and integrated with the main cylindrical housing on the front side. However, when the cylindrical housing and the rectangular tube-shaped housing are joined and integrated in the front and rear, stress concentration tends to occur at the joined portion, making it difficult to ensure strength.

  Therefore, it is desired to continuously form the front and rear deformed portions, which are portions having different cross-sectional shapes before and after, over the entire length without providing a joint portion joined front and rear. That is, it is desired to form the housing using a prepreg having a length corresponding to the entire length of the front and rear deformed portions. However, when the prepreg is wound around the mandrel in many turns, the cross-sectional shape is different between the front and rear, so that the prepreg is likely to be wrinkled and twisted, and a housing having stable strength and good aesthetics can be manufactured. There was a problem that it was difficult.

JP 2013-179948 A

  Therefore, the present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a fishing rod body capable of easily ensuring stable strength and good aesthetics, and a fishing rod equipped with the same.

  The present invention has been made to solve the above problems, and a fishing rod housing according to the present invention includes a main body layer formed in a cylindrical shape from a prepreg, and the main body layer is located on the front side and has a cross-section. A first region whose shape is the first shape, a second region located on the rear side and a second shape whose cross-sectional shape is different from the first shape, and the first region and the second region It has a front and rear deformed portion consisting of a transition region that is located between, and the cross-sectional shape gradually changes from the first shape to the second shape from the front side to the rear side, A plurality of prepregs having a length corresponding to the front-rear deformed part and having a width less than one turn in the second region are wound so as to be arranged in the circumferential direction while forming an overlapping part, thereby forming a cylindrical shape. It has the circumferential direction division layer. The tip side is the front side and the buttock side is the rear side.

  In the fishing rod housing having such a configuration, the front / rear deformed portion is not formed by winding one prepreg having a length corresponding to the entire length of the front / rear deformed portion more than once to form the front / rear deformed portion. Since it is a configuration having a circumferentially divided layer formed from a plurality of prepregs having a width less than one turn in two regions, the prepreg is wrinkled or twisted even if the cross-sectional shape at the front and rear deformed portions is different between the front and rear. Hard to occur. That is, the circumferentially divided layer in the front and rear deformed portions of the main body layer has an overlapping portion in which the side edges of adjacent prepregs in the circumferential direction are overlapped with each other while forming such an overlapping portion. A plurality of prepregs are arranged in the circumferential direction and configured in a cylindrical shape. In addition, since the circumferentially divided layer is composed of the prepreg having a length corresponding to the total length of the front and rear deformed portions, the front and rear deformed portions do not have the front and rear joint portions, that is, the front and rear deformed portions. Stress concentration in the deformed portion is prevented, and bending strength can be easily secured. Furthermore, since the overlapping portion extends in a streak shape in the front-rear direction and is formed over the entire length of the front-rear deformed portion, the streaked overlapped portion also functions as a rib. Bending strength can be easily secured. The circumferential dividing layer may be a single layer or two or more layers. Further, the main body layer may be composed of a single layer or a plurality of circumferentially divided layers over the entire length, but one or more circumferentially divided layers are provided at least in the front and rear deformed portions of the entire length of the main body layer. It only has to be. Note that the entire length of the main body layer may be the front / rear deformed portion.

  In particular, the cross-sectional shape of the second region is a polygon having an odd number of sides, and the circumferential division layer for one layer in the second region is constituted by the number of prepregs corresponding to the number of sides. preferable. The polygon has a corner portion that is a vertex between the sides, but the corner portion may be a predetermined arc, and the side is not a straight line but an outwardly convex curve. There may be. When the cross-sectional shape of the second region is a polygon having an odd number of sides typified by triangles and pentagons, the same number of prepregs as the number of sides are used to form one circumferential division layer in the second region. It is preferable to configure, and a well-balanced casing is obtained. For example, when the cross-sectional shape of the second region is a pentagon, the circumferential division layer for one layer in the second region is configured using five prepregs, and the cross-sectional shape of the second region When is a regular pentagon, each of the five prepregs is responsible for each region obtained by equally dividing the circumference of the regular pentagon into five.

  Further, the cross-sectional shape of the second region is a polygon having an even number of sides, and one circumferential division layer in the second region is formed by a number of prepregs corresponding to a divisor other than 1 of the number of sides. It is preferable to be configured. Also in this case, when the cross-sectional shape of the second region is a polygon having an even number of sides typified by a square or a hexagon, a number of prepregs corresponding to a divisor other than 1 is used. It is preferable to form a circumferential dividing layer for one layer in the second region, and a well-balanced casing is obtained. For example, when the cross-sectional shape of the second region is a quadrangle, a circumferential division layer for one layer is constituted by two or four prepregs, and when the cross-sectional shape of the second region is a hexagon, A circumferentially divided layer for one layer is constituted by any number of prepregs of 2, 3, or 6. In the case of a regular hexagon, for example, when two prepregs are used to form a circumferential division layer for one layer in the second region, each of the two prepregs has two sides of the regular hexagon. It is preferable to handle each region equally divided into two, and similarly, when three prepregs are used to form a circumferential division layer for one layer in the second region, the three prepregs are It is preferable to cover each area obtained by equally dividing a regular hexagonal circle into three parts. When six prepregs are used to form a circumferential division layer for one layer in the second area, the six It is preferable that each of the prepregs is responsible for each region obtained by equally dividing a regular hexagonal circle into six.

  Furthermore, in the second region, the overlapping portion is preferably located at a corner of the polygon, and is preferably located at the center of the side of the polygon. As described above, in the second region, a well-balanced casing can be obtained when the overlapping portion is located at the corner of the polygon or at the center of the side.

  Further, the main body layer is located between the narrow tube portion positioned on the front side, the thick tube portion positioned on the rear side, and the narrow tube portion and the thick tube portion, and the gradient of the thin tube portion and the gradient of the thick tube portion. It is preferable that a steeply enlarged portion that is both steeply inclined toward the rear side and that is enlarged toward the rear side is provided, and the transition region is located in the steeply enlarged portion. In the case where the main body layer has front and rear deformed portions and a suddenly enlarged portion, wrinkles and twists are more likely to occur when the prepreg is wound, but a plurality of sheets having a length from the thin tube portion to the thick tube portion By forming the circumferentially divided layer with this prepreg, generation of wrinkles and twists can be suppressed, a stable strength is ensured, and a good aesthetic appearance is also obtained. Note that the gradient of the thin tube portion and the gradient of the thick tube portion may both be 0, that is, a straight shape.

  The fishing rod according to the present invention includes the fishing rod rod as described above.

  As described above, since the front and rear deformed portions of the main body layer have a circumferentially divided layer formed by a plurality of prepregs having a length corresponding to the main body layer, they correspond to the front and rear deformed portions. Compared to a configuration with a continuous wrap around the entire circumference of a prepreg with a length of one or more prepregs, the prepreg is less prone to wrinkling and twisting, and stable strength and good aesthetics are easy Is obtained.

Sectional drawing which shows the principal part of the fishing rod in one Embodiment of this invention. The front view which shows the rod used for the fishing rod of the embodiment. (A) is an AA end view of FIG. 2, (b) is a BB end view of FIG. The front view which shows the manufacturing method of the housing of the embodiment. The perspective view which shows the manufacturing method of the housing of the embodiment. The block diagram which shows an example of the prepreg used for the housing of the embodiment. (A) And (b) is sectional drawing of the location corresponding to FIG. 3 (a) and FIG.3 (b) of the housing in other embodiment of this invention. The perspective view which shows the manufacturing method of the housing of the embodiment. The perspective view which shows the manufacturing method of the housing in other embodiment of this invention. The perspective view which shows the manufacturing method of the housing in other embodiment of this invention. (A) And (b) is sectional drawing of the location corresponding to FIG.3 (b) of the housing in other embodiment of this invention, respectively. (A) And (b) is sectional drawing of the location corresponding to FIG.3 (b) of the housing in other embodiment of this invention, respectively.

  Hereinafter, a fishing rod according to an embodiment of the present invention and a rod used in the fishing rod will be described with reference to FIGS. As shown in FIG. 1, the fishing rod in this embodiment is provided with a reel sheet 1 for attaching a reel. The reel sheet 1 has a cylindrical shape also called a pipe sheet, and includes a reel sheet main body 10, a movable hood body 11, and a nut 12. The reel sheet main body 10 is formed by molding from synthetic resin or the like, and is fixed to which one of the reel leg mounting portion 13 for mounting the reel leg portion 100 and the reel leg portion 100 is inserted. And a hood section 14. In this embodiment, the reel sheet 1 for attaching the spinning reel is described as an example. Therefore, as shown in FIG. 1, the reel leg mounting portion 13 of the reel sheet main body 10 is on the lower side in the use state. Although it is located, the reel sheet 1 for attaching both-axis reels may be used. Further, the fixed hood portion 14 of the reel seat body 10 is located on the front side, but may be on the rear side. A male thread portion 15 is formed in the second region of the reel sheet body 10, and a nut 12 is screwed into the male thread portion 15. A movable hood body 11 into which the other leg 100 of the reel is inserted is positioned on the front side of the nut 12. Since the movable hood body 11 is locked to the nut 12 so as to be relatively rotatable, the movable hood body 11 moves back and forth with the nut 12 without rotating by rotating the nut 12. By moving the movable hood body 11 to the front side, that is, by approaching the fixed hood portion 14, the reel leg portion 100 can be fixed to the reel seat body 10 while being held back and forth. Moreover, the fixed state of the leg part 100 of the reel is released by moving the movable hood body 11 to the rear side, that is, moving away from the fixed hood part 14, and the reel can be removed from the fishing rod. Further, a front grip portion 7 is provided on the front side of the reel sheet 1. The front grip 7 is separate from the reel sheet main body 10 and is formed of foaming synthetic resin such as EVA, cork, or the like.

  The fishing rod mounted with the reel sheet 1 in this way is a rear grip rod that is bonded and integrated so as to form a rod body 2 and a front and rear overlapping portion 4 of a predetermined length on the rear side of the rod body 2. And a body 3. In the front-and-rear overlapping portion 4 which is a joint portion where the heel body 2 and the rear grip housing 3 are joined back and forth, the rear end portion of the heel body 2 is located on the inner side, and the rear grip housing 3 is disposed on the outer side. The front end is located, but it may be reversed.

  The main body 2 is provided with a body layer formed by winding a sheet-shaped prepreg cut into a predetermined shape around a mandrel into a cylindrical shape, and carbon fiber, glass fiber, or the like is used as a prepreg reinforcing fiber. In particular, carbon fibers are preferable, and when carbon fibers are used, it is preferable to increase the ratio. Although the rear grip housing 3 is shown in FIG. 2, this rear grip housing 3 also includes a body layer formed by winding a sheet-shaped prepreg cut into a predetermined shape around a mandrel, An example in which the main body layer is formed over the entire length of the rear grip housing 3 will be described later. The rear grip housing 3 shown in FIG. 2 is shown in a slightly different ratio than the rear grip housing 3 shown in FIG.

  The thickness of the rear grip housing 3 is substantially constant over the entire length, and is substantially equal to the thickness at the rear end portion of the collar body 2. A rear grip portion 5 is formed integrally with the rear grip housing 3, and the rear grip portion 5 is located on the rear side of the reel seat 1. The rear grip portion 5 is used by applying the elbow of a hand holding a fishing rod or holding it with a hand opposite to the hand holding the reel seat 1 when casting with both hands. The rear grip portion 5 is a deformed grip having a non-circular cross section. That is, the rear grip portion 5 is not circular in cross section, that is, not cylindrical, and has a triangular cross section, that is, a rectangular tube. If the cross-sectional shape of the rear grip part 5 is a triangle, the gripping property is improved when gripped, and it is difficult to slip. Also, when the elbow is applied, if it is applied to the side of the triangle, the contact area is increased and the stability is increased. Will be better and the feel will be softer. The same applies to other polygons and non-circular shapes. In addition, the thickness at the rear end of the rear grip portion 5 is preferably thicker than that of the housing 2, and is preferably equal to or larger than the front grip portion 7.

  As shown in FIG. 2, the rear grip housing 3 includes a rapidly expanding portion 31 in which the inner surface and the outer surface expand with a steep slope toward the rear side. Specifically, the rear grip housing 3 includes, in order from the front side, a thin cylindrical thin cylindrical portion 30, a cylindrical suddenly expanding portion 31 that gradually increases toward the rear side, and a thin cylindrical portion 30. The steeply enlarged portion 31 has a larger slope than the narrow tubular portion 30 and larger than the thick tubular portion 32. More specifically, in this embodiment, the gradient of the thin tube portion 30 and the gradient of the thick tube portion 32 are both 0, and therefore the thin tube portion 30 and the thick tube portion 32 are straight. However, it is needless to say that the narrow cylindrical portion 30 and the thick cylindrical portion 32 have a shape that expands toward the rear side with a gradient of several percent, for example.

  Thus, the rear grip part 5 is formed integrally with the rear grip housing 3 by including the rapid enlargement part 31, and the rear grip part 5 is mainly composed of the rear part and the thick tube part 32 of the rapid enlargement part 31. Has been. The length of the thin tube portion 30 and the length of the thick tube portion 32 are arbitrary, and one may be longer than the other or the same length as each other. The length of 32 is shorter than the length of the thin cylindrical portion 30 and shorter than the length of the rapidly expanding portion 31. In addition, the reel seat body 10 is mounted on the thin tube portion 30 of the rear grip housing 3, and the rear grip housing 3 is overlapped with the housing main body 2 in the thin tube portion 30. A rear end plug 33 is attached to the rear end of the rear grip housing 3.

  In the present embodiment, the rear grip housing 3 has a cross-sectional shape that is not constant over the entire length, and the cross-sectional shape differs between the front and rear. That is, the rear grip housing 3 includes front and rear deformed portions having different cross-sectional shapes in the front and rear. As shown in FIG. 3, the cross-sectional shape of the thin cylindrical portion 30 is circular, and the cross-sectional shape of the thick cylindrical portion 32 is non-circular, specifically an equilateral triangle. In the predetermined portion, the cross-sectional shape gradually changes from a circular shape to an equilateral triangle. FIG. 3 shows only the main body layer. The thin cylindrical portion 30 has a circular cross-sectional shape over its entire length, and the thick cylindrical portion 32 has a regular triangular cross-sectional shape over its entire length. And in the predetermined length area | region of the front side in the rapid expansion part 31, the cross-sectional shape is circular like the thin cylinder part 30, Comprising: In the predetermined length area | region of the back side remaining in the rapid expansion part 31, the cross section The shape gradually changes from a circle to an equilateral triangle. Therefore, if the total length of the rear grip housing 3 is classified by the cross-sectional shape, it can be divided into three regions. That is, the rear grip housing 3 includes, in order from the front side, a first region 40 having a circular cross-sectional shape, a transition region 41 in which the cross-sectional shape gradually changes from a circular shape to a regular triangle, and a cross-sectional shape having a regular triangle shape. The second region 42 can be divided into the first region 40, the first region 40, the transition region 41, and the second region 42. In the present embodiment, the narrow tube portion 30 and the predetermined length region on the front side of the sudden enlargement portion 31 constitute a first region 40, and the predetermined length region on the rear side of the sudden enlargement portion 31 constitutes a transition region 41. The thick tube portion constitutes the second region 42. Accordingly, in the rapid enlargement portion 31, the predetermined length on the front side forms the first region 40, and the predetermined length on the rear side forms the second region 42.

  As shown in FIG. 3, the main body layer of the rear grip housing 3 has a circumferentially divided layer in which one circumference is divided into a plurality of regions. In the present embodiment, a configuration in which the main body layer is composed only of the circumferential direction division layer will be described for the sake of simplicity. FIG. 3 shows the case where the circumferential division layer is a single layer, that is, the case where the main body layer is a single layer. However, the circumferential division layer is not limited to a single layer, and there are a plurality of layers, that is, two or more layers. Of course it is good. In this embodiment, since the cross-sectional shape of the thick cylindrical portion 32 (second region 42) of the rear grip housing 3 is an equilateral triangle, one circumference is equally divided into three, and each region has one prepreg 71, 72, respectively. , 73, and a total of three prepregs 71, 72, 73 constitute one circumferential division layer. Each of the prepregs 71, 72, 73 has a length corresponding to the entire length of the front and rear deformed portions in the main body layer. In the present embodiment, since the main body layer is provided over the entire length of the rear grip housing 3, and the entire length of the main body layer is a front-rear deformed portion, the three prepregs 71, 72, 73 are all rear grip housings. 3 has a length corresponding to the total length of 3. Further, the three prepregs 71, 72, 73 have the same shape, and have a width less than one turn in the thick cylindrical portion 32 (second region 42). Since the thick cylindrical portion 32 (second region 42) is an equilateral triangle as will be described later, the width W2 at the rear end of each prepreg 71, 72, 73 is equal to one round of the thick cylindrical portion 32 (second region 42). The dimension is obtained by adding the width of the overlapping portion 74 to the dimension divided into three equal parts. Further, the width W1 at the front end of each prepreg 71, 72, 73 is a dimension obtained by adding the width of the overlapping portion 74 to the dimension obtained by dividing the circumference of the thin cylindrical portion 30 into three equal parts.

  The three prepregs 71, 72, 73 are cylindrical with their side edges overlapped inside and outside. Therefore, the overlapping portion 74 formed by overlapping the side edges is one layer. A total of three places are formed in the circumferential division layer. In addition, since the cross-sectional shape of the thick cylindrical portion 32 (second region 42) is an equilateral triangle and the widths of the three prepregs 71, 72, 73 are the same, the three overlapping portions 74 are equal in the circumferential direction. It is arranged at intervals. That is, the three overlapping portions 74 are arranged at intervals of 120 degrees. Further, the overlapping portion 74 is located at the corner portion 34 of the equilateral triangle, and therefore, the three sides are constituted by the single prepreg 71, 72, 73, respectively. The same applies not only to the thick tube portion 32 (second region 42) but also to the thin tube portion 30 to the first region 40 having a circular cross-sectional shape. The prepregs 71, 72, and 73 are configured, and the overlapping portions 74 are also formed at intervals of 120 degrees. These overlapping portions 74 extend in a line shape in the front-rear direction and are formed over the entire length of the rear grip housing 3. As described above, the main body layer of the rear grip housing 3 in the present embodiment has a configuration in which one circumferential division layer is formed by three prepregs over the entire length thereof.

  The detailed structure of the rear grip housing 3 will be described together with its manufacturing method. As shown in FIG. 4, the mandrel 60 has a shape that matches the shape of the rear grip housing 3. Therefore, the mandrel 60 has a first portion 61 for forming the narrow cylindrical portion 30 in order from the front side, a second portion 62 for forming the rapidly expanding portion 31, and a thick cylindrical portion 32. The third portion 63 has a shape, and the entire length of the first portion 61 and the front portion of the second portion 62 are circular in cross section, and the cross section of the third portion 63 is positive. It is a triangle, and the cross-sectional shape gradually changes from a circular shape to an equilateral triangle in the rear portion of the second portion 62. The main body layer is formed over the entire length of the rear grip housing 3, and in the present embodiment, it has a single-layer structure and is composed of a single layer in the circumferential direction, and has the same shape as shown in FIG. Three prepregs 71, 72, 73 are set as one set, and a circumferentially divided layer for one round is formed from the three prepregs 71, 72, 73.

  The prepregs 71, 72, and 73 have a shape that is long in the front-rear direction (the axial direction of the rear grip housing 3), and the length L is a length corresponding to the entire length of the rear grip housing 3. That is, the length L of the prepregs 71, 72, 73 is a length having a predetermined margin so that the end portion can be cut after heating and baking to form the rear grip housing 3 having a predetermined length. Yes. However, it may be the same length as the entire length of the rear grip housing 3. The widths of the prepregs 71, 72, 73 are widths corresponding to approximately 1/3 of the circumferential length of each part of the mandrel 60. Specifically, the width W1 of the front end is a width corresponding to approximately ３ turns of the first portion 61 of the mandrel 60, and the width W2 of the rear end is approximately ３ of the third portion 63 of the mandrel 60. Although the width corresponds to the winding, when winding around the mandrel 60, the widthwise ends of the prepregs 71, 72, 73 are overlapped inside and outside, which corresponds to 1/3 of the circumference. The width is obtained by adding an amount corresponding to the width of the overlapping portion 74 to the width, that is, a width having a slight margin. In any case, each divided area obtained by dividing the circumference into three equal parts is formed by a single prepreg 71, 72, 73, and the three prepregs 71, 72, 73 constitute one round. Accordingly, the prepregs 71, 72, and 73 have the first rectangular portions 71 a, 72 a, and 73 a that have a width W <b> 1 that corresponds to approximately one third of the thin tube portion 30, and approximately one third of the thick tube portion 32. Second rectangular portions 71c, 72c, 73c having a width W2 corresponding to the winding, and the width of the front end is W1, the width of the rear end is W2, and the width gradually increases in a taper shape toward the rear side. It consists of trapezoidal portions 71b, 72b and 73b. The narrow cylindrical portion 30 is formed from the first rectangular portions 71a, 72a, 73a, the sudden expansion portion 31 is formed from the trapezoidal portions 71b, 72b, 73b, and the second rectangular portions 71c, 72c, 73c. A thick cylindrical portion 32 is formed. In FIG. 4, two-dot chain lines are drawn at the boundary portions of the first rectangular portions 71a, 72a, 73a, the trapezoidal portions 71b, 72b, 73b and the second rectangular portions 71c, 72c, 73c. It shows.

  For such prepregs 71, 72, 73, sheets having various specifications can be used, but it is preferable to include reinforcing fibers along the axial direction (front-rear direction) of the rear grip housing 3. For example, as shown in FIG. 6, the reinforcing fiber is cut into a predetermined shape from a laminated sheet 83 obtained by laminating and integrating a longitudinal sheet 81 along the axial direction and a lateral sheet 82 along the circumferential direction of the reinforcing fibers. Can be used. As the reinforcing fiber, carbon fiber or the like can be used in the same manner as in the case of the heel body 2 described above.

  The outline of the manufacturing method will be described. First, the first prepreg 71 is wound around the mandrel 60. When the first prepreg 71 is wound around the mandrel 60, about 1/3 of the entire circumference of the mandrel 60 is wound by the first prepreg 71. The first prepreg 71 is wound around one side of the equilateral triangle in the third portion 63 of the mandrel 60, and both side edges thereof are positioned at the corners 63 a of the equilateral triangle in the third portion 63. Next, the mandrel 60 is rotated 120 degrees in one direction around the axis, and the second prepreg 72 is similarly wound. The second prepreg 72 is wound so as to overlap with a predetermined width on one end portion (side edge portion) in the width direction of the first prepreg 71. Accordingly, an overlapping portion 74 having a predetermined width is formed by the side edge portion of the first prepreg 71 and the side edge portion of the second prepreg 72. The overlapping portion 74 extends in the front-rear direction and is formed with a substantially constant width over the entire length. The second prepreg 72 is wound around one of the remaining two sides of the equilateral triangle in the third portion 63 of the mandrel 60. Accordingly, the overlapping portion 74 is located at the corner 63a of the equilateral triangle in the third portion 63 of the mandrel 60.

  Further, the mandrel 60 is rotated 120 degrees around the axis in the same direction as before, and the third prepreg 73 is wound. Also in this case, the third prepreg 73 is wound around one end (side edge) in the width direction of the second prepreg 72 so as to overlap with a predetermined width, and the width of the first prepreg 71 in the width direction is also wound. The third prepreg 73 is also overlapped with a predetermined width on the other end (side edge). The third prepreg 73 is wound around the remaining side of the equilateral triangle in the third portion 63 of the mandrel 60. When the third prepreg 73 is wound around the mandrel 60, the entire circumference of the mandrel 60 is covered with the three prepregs 71, 72, and 73, and the entire prepreg 73 is wound around the entire length. The overlapping portions 74 of the prepregs 71, 72, 73 are formed at a total of three locations every 120 degrees, and the third portion 63 of the mandrel 60 is positioned at three corners 63a of the equilateral triangle. Will do. Further, the three prepregs 71, 72, 73 are wound around the mandrel 60 from the first part 61 to the third part 63, and the three prepregs 71, 72, 73 are used to form three overlapping layers. A circumferentially divided layer having the mating portion 74 is formed over the entire length. FIG. 5 shows an outline of the positional relationship between the mandrel 60 and the three prepregs 71, 72, 73 in the circumferential direction. As shown in FIG. 5, the three prepregs 71, 72, 73 are arranged and wound so as to face each side of the equilateral triangle in the third portion 63 of the mandrel 60. That is, the three prepregs 71, 72, 73 are wound such that the center portions in the width direction are respectively located at the center portions of the sides of the equilateral triangle in the third portion 63 of the mandrel 60. In the present embodiment, since the main body layer is composed of a single circumferentially divided layer, the winding process for one turn with such three prepregs 71, 72, 73 as one set is performed once. However, when two or more circumferential division layers are formed, the second and subsequent winding steps are similarly performed.

  And after forming the main body layer which consists of a circumferential direction division layer in this way, the outer layer which is not illustrated is formed in the outer side. The outer layer is formed by spirally winding a tape-shaped prepreg on the outer side of the main body layer over the entire length. That is, in this embodiment, the rear grip housing 3 is composed of a main body layer and an outer layer. Tape-like prepregs are made by aligning reinforcing fibers such as carbon fibers along the longitudinal direction, and various thicknesses can be used. The tape-shaped prepreg is preferably wound closely. Close winding refers to winding in a state where there is no gap and without overlapping, and the outer layer is formed with a constant thickness without any gap by this close winding. Thereafter, a molding tape (not shown) is wound and tightened. The forming tape is spirally wound from one side to the other side in the axial direction while having an overlapping portion with a predetermined width. And after baking, the molding tape is removed, the mandrel 60 is pulled out, both ends are cut, and the rear grip housing 3 is formed.

  In the rear grip housing 3 formed in this way, a circumferential division layer for one turn is formed from the three prepregs 71, 72, 73, so that one prepreg is wound one turn or more. Even if the cross-sectional shape is different in the front and rear as compared with the configuration in which the thick cylindrical portion 32 (second region 42) of the main body layer is formed by turning, even if the suddenly enlarged portion 31 exists in the middle portion thereof The prepregs 71, 72, 73 are less likely to be wrinkled or twisted, and the rear grip housing 3 having a good aesthetic appearance and a stable strength can be easily manufactured.

  Further, since there are no front and rear joining portions over the entire length of the rear grip housing 3, it is possible to prevent stress concentration and easily ensure sufficient bending strength. In addition, the overlapping portion 74 of the prepregs 71, 72, 73 extends in a streak shape over the entire length, and the streaky overlapping portion 74 also functions as a rib. Therefore, the rear grip housing 3 The bending strength can be easily secured.

  Further, since the circumferential division layer for one layer is constituted by the three prepregs 71, 72, 73 having the same number as the sides of the equilateral triangle, the well-balanced rear grip housing 3 can be obtained. In particular, since the three prepregs 71, 72, 73 have the same shape so as to divide the circumference into three equal parts, the overlapping portion 74 is formed at a certain interval in the circumferential direction, A rear grip housing 3 balanced in the circumferential direction is obtained. In addition, in the thick cylindrical portion 32 (second region 42), the three overlapping portions 74 are respectively positioned at the corner portions 34 of the equilateral triangle, so that the balanced rear grip housing 3 is obtained. Furthermore, since it is the circumferential direction division layer for one round over the full length of the rear grip housing 3, thickness can be made substantially uniform over the full length.

  Further, if a laminated sheet 83 in which the vertical sheet 80 and the horizontal sheet 81 are laminated in advance and integrated is used for the prepregs 71, 72, 73, the rear grip sheet can be obtained even if the circumferentially divided layer has the number of turns for one round. The strength of the body 3 can be easily secured.

  In the present embodiment, the three prepregs 71, 72, 73 are arranged so that the three overlapping portions 74 are positioned at the corners 34 of the equilateral triangle in the thick cylindrical portion 32 (second region 42). Although arranged so as to face each side of the equilateral triangle in the third portion 63 of the mandrel 60, as shown in FIG. 8, the center portion in the width direction of the three prepregs 71, 72, 73 is the third portion of the mandrel 60. It may be arranged so as to correspond to each corner 63a of the equilateral triangle in the portion 63. In this case, as shown in FIG. 7, the three overlapping portions 74 are located at the center of each side of the equilateral triangle in the thick tube portion 32 (second region 42). As described above, even in the configuration in which the three overlapping portions 74 are positioned at the center of each side of the equilateral triangle in the thick cylindrical portion 32 (second region 42), the well-balanced rear grip housing 3 can be obtained.

  Moreover, as shown in FIG.9 and FIG.10, it is good also considering the three prepregs 71, 72, and 73 as a rectangular shape with constant width over the full length. The width is set to a width W2 corresponding to approximately 1/3 turn of the thick cylindrical portion 32. FIG. 9 shows an arrangement similar to that in FIG. 5, in which three overlapping portions 74 are positioned at each corner 34 of the equilateral triangle in the thick cylindrical portion 32 (second region 42). The prepregs 71, 72, 73 are respectively arranged corresponding to the sides of the equilateral triangle in the third portion 63 of the mandrel 60. FIG. 10 shows an arrangement similar to that in FIG. 8, and the three overlapping portions 74 are positioned at the center of each side of the equilateral triangle in the thick cylindrical portion 32 (second region 42). This is a case where the prepregs 71, 72, 73 of the sheets are arranged so that the center part in the width direction thereof coincides with each corner 63 a of the equilateral triangle in the third part 63 of the mandrel 60. When the prepregs 71, 72, 73 having a constant width are used in this way, the narrow tube portion 30 is thinner and smaller in diameter than the thick tube portion 32. On the other hand, the direction division layer is formed, and in the thin cylindrical portion 30, a circumferential division layer having a number of turns exceeding one round is formed by three prepregs. Although depending on the diameter of the thin cylindrical portion 30, it is also possible to form a circumferentially divided layer having, for example, two or more turns by the three prepregs 71, 72, 73. As described above, when the circumferential division layer having the number of turns exceeding one turn is formed by the three prepregs 71, 72, 73 in the thin tube portion 30, the thickness in the thin tube portion 30 can be easily increased and the thin tube portion 30 is thinned. The strength in the cylindrical portion 30 can be increased. However, in the thick cylindrical portion 32, as in the case shown in FIG. 5 and FIG. 8, the three prepregs 71, 72, 73 form a circumferentially divided layer of the number of turns for one turn, so that the prepregs 71, 72, 73 is less likely to wrinkle or twist.

  In addition, although one circumferential division | segmentation layer was formed with the total three sheets of prepregs 71, 72, and 73 which has a width | variety equivalent to the division area of about 120 degree | times which is a part of the circumference substantially, it is a division area | region of about 180 degree | times. One circumferential dividing layer may be formed by a total of two prepregs having a width corresponding to. Further, one round may be divided into four or five. The plurality of prepregs do not have to have the same width and may have different shapes. The plurality of prepregs only have to have a width less than one turn in the thick cylindrical portion 32 (second region 42).

  Moreover, although the case where the thick cylinder part 32 (2nd area | region 42) is an equilateral triangle was demonstrated, it is natural even if it is another polygon. For example, as shown in FIG. 11, the thick cylindrical portion 32 (second region 42) may be a regular pentagon. In addition, hatching is abbreviate | omitted in FIG. 11 and FIG. 12 mentioned later. When the thick cylindrical portion 32 (second region 42) is a regular pentagon as shown in FIG. 11, a total of five prepregs 91, 92, 93, 94, having the same number as the number of sides of the regular pentagon. It is preferable to form one circumferential dividing layer from 95. FIG. 11A shows five prepregs 91, 92, 93, 94 such that the five overlapping portions 74 are positioned at the respective corner portions 34 of the regular pentagon in the thick cylindrical portion 32 (second region 42). , 95 are arranged so as to correspond to the sides of the regular pentagon in the third portion 63 of the mandrel 60, and FIG. 11 (b) shows the five overlapping portions 74 having the thick cylindrical portion 32 (second region 42). The five prepregs 91, 92, 93, 94, 95 are arranged in the center of each side of the regular pentagon in FIG. This is a case where they are arranged so as to coincide with each corner 63a.

  Furthermore, it may be a polygon with an odd number of sides, or a polygon with an even number of sides. In the case of a regular hexagon, the number of sides of the regular hexagon is 6, and the divisor except 1 is 2, 3 or 6. Therefore, one circumferential division is performed by two, three or six prepregs. It is preferable to form a layer. In particular, it is preferable to form one circumferential division layer by two or three prepregs, and to form one circumferential division layer by three prepregs. Particularly preferred. When the circumferentially divided layer for one layer is formed by three prepregs, the overlapping portion 74 can be evenly arranged at three positions every 120 degrees on the circumferentially divided layer for one layer, and the rear grip cage having a particularly excellent balance. The body 3 can be formed. For example, as shown in FIG. 12A, when one circumferential division layer is formed by three prepregs 111, 112, and 113, each prepreg 111, 112, and 113 has two sides of a regular hexagon. Become. In FIG. 12A, the prepregs 111, 112, and 113 are arranged so that the overlapping portion 74 is positioned at the corner portion 34, but the prepreg is positioned so that the overlapping portion 74 is positioned at the center of the side. You may arrange. In addition, when the circumferentially divided layer for one layer is formed by two prepregs, one prepreg takes charge of three sides, and the overlapping portion 74 is 180 degrees on the circumferentially divided layer for one layer. Two places are formed facing each other.

  FIG. 12B shows a case where two circumferentially divided layers are formed, in which three prepregs form one set to form a circumferentially divided layer for one turn in the thick cylindrical portion 32 (second region 42). doing. A first circumferentially divided layer is formed by the three inner prepregs 111, 112, and 113. Similarly, a second circumferentially divided layer is further formed by the three prepregs 121, 122, and 123 on the outer side. Thus, a total of two circumferentially divided layers are formed. In each of the first circumferential division layer and the second circumferential division layer, the overlapping portion 74 is located at the corner portion 34. And the overlapping layer 74 of the second layer are located at different corners 34 and are displaced from each other in the circumferential direction. As a result, the overlapping portion 74 is similarly formed in any of the six corners 34. Has been. By doing in this way, the rear grip housing 3 more uniform in the circumferential direction can be formed. In addition, the circumferential direction division | segmentation layer may be three or more layers.

  When two or more circumferential division layers are formed in this way, for example, in the case of a regular hexagon, the first circumferential division layer is formed by three prepregs, and the second circumferential division layer is formed. It may be formed by two prepregs, or the number of prepregs may be different for each layer. In addition, the number of prepregs in each layer may be the same, and the shape and width of the prepreg may be changed for each layer. Further, for the first circumferential division layer, the overlapping portion 74 is positioned at the corner 34, and for the second circumferential division layer, the overlapping portion 74 is positioned at the center of the side, etc. You may change the position of the superimposition part 74 for every layer.

  The cross-sectional shape of the second region 42 is preferably a regular polygon, but may be a polygon other than a regular polygon, or may be a non-circular shape such as an ellipse or an oval other than a polygon. The cross-sectional shape of the second region 42 may be circular, and the cross-sectional shape of the first region 40 may be a polygon or the like. Further, the cross-sectional shape of the first region 40 may be triangular and the cross-sectional shape of the second region 42 may be hexagonal, and the cross-sectional shape of the first region 40 and the cross-sectional shape of the second region 42 may be different from each other. That's fine.

  The front / rear deformed portion may not be the entire length of the rear grip housing 3, and the lengths of the first region 40 and the second region 42 may be short. Therefore, for example, the front / rear deformed portion may be constituted by the suddenly enlarged portion 31 and the thick cylindrical portion 32. In addition, although the gradients of the thin tube portion 30 and the thick tube portion 32 are both 0, the gradient of the thin tube portion 30 and the thick tube portion 32 is not 0 but a gentle gradient and gradually increases toward the rear side. It is good. In addition, although the rapid enlargement portion 31 is provided, a constant gradient may be provided over the entire length without providing the sudden enlargement portion 31, such as a gradient of 0 or a few percent.

  Moreover, although the said embodiment demonstrated the case where it applied to the rear grip housing 3, it is not restricted to the rear grip housing 3, It can use for various housings. Moreover, although the fishing rod which mounts | wears with a reel was demonstrated, the fishing rod of the type which does not mount | wear a reel like a pan rod etc. may be used.

  In addition, an inner layer may be formed inside the main body layer, and the inner layer can be formed by winding a tape-shaped prepreg spirally like the outer layer. In addition to winding the prepreg around the mandrel 60 to form a hollow casing, a solid casing may be formed by forming a body layer on the outside of the solid body.

DESCRIPTION OF SYMBOLS 1 Reel seat 2 ２ main body 3 Rear grip housing 4 Front and rear overlapping part 5 Rear grip part 7 Front grip part 10 Reel seat main body 11 Movable hood body 12 Nut 13 Reel leg mounting part 14 Fixed hood part 15 Male thread part 30 Narrow tube Part 31 Rapidly expanding part 32 Thick cylinder part 33 Bottom plug 34 Corner part 40 First area 41 Transition area 42 Second area 60 Mandrel 61 First part 62 Second part 63 Third part 63a Corner part 71 Prepreg 71a First One rectangular portion 71b Trapezoidal portion 71c Second rectangular portion 72 Prepreg 72a First rectangular portion 72b Trapezoidal portion 72c Second rectangular portion 73 Prepreg 73a First rectangular portion 73b Trapezoid Portion 73c Second rectangular portion 74 Overlapping portion 81 Vertical sheet 82 Horizontal sheet 83 Laminated sheet 91 Prepreg 92 prepreg 93 prepreg 94 prepreg 95 prepreg 100 reel leg 111 first layer of prepreg 112 first layer of prepreg 113 first layer of prepreg 121 second-layer prepreg 122 second-layer prepreg 123 second-layer prepreg

Claims (7)

A body layer formed in a cylindrical shape from a prepreg,
The main body layer is located on the front side and has a first region whose cross-sectional shape is a first shape, and a second region located on the rear side and whose cross-sectional shape is a second shape different from the first shape And a front-rear variant consisting of a transition region located between the first region and the second region and having a cross-sectional shape gradually changing from the first shape to the second shape from the front side to the rear side Part
The front / rear deformed portion is wound so that a plurality of prepregs having a length corresponding to the front / rear deformed portion and a width less than one turn in the second region are arranged in a circumferential direction while forming an overlapped portion. A fishing rod housing having a circumferentially divided layer that is turned into a cylindrical shape.   2. The cross-sectional shape of the second region is a polygon having an odd number of sides, and a circumferential division layer for one layer in the second region is configured by a number of prepregs corresponding to the number of sides. For fishing rods.   The cross-sectional shape of the second region is a polygon having an even number of sides, and a circumferential division layer for one layer in the second region is configured by a number of prepregs corresponding to a divisor other than 1 of the number of sides. The fishing rod housing according to claim 1.   The fishing rod housing according to claim 2 or 3, wherein in the second region, the overlapping portion is located at a corner of the polygon.   The fishing rod housing according to claim 2 or 3, wherein, in the second region, the overlapping portion is located at a central portion of a side of the polygon.   The main body layer is located between the narrow tube portion located on the front side, the thick tube portion located on the rear side, and the narrow tube portion and the thick tube portion, and more than the gradient of the narrow tube portion and the gradient of the thick tube portion. A fishing rod housing according to any one of claims 1 to 5, further comprising a steeply enlarged portion that has both a steeply sloped inner surface and an outer surface toward the rear side, and wherein the transition region is located in the steeply enlarged portion. .   A fishing rod provided with the rod for fishing rod according to any one of claims 1 to 6.

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