Fishing rod

Abstract

To provide a fishing rod with a complicated shape which has a concave outer surface concavely recessed along a core grid and has a convex inner surface projecting inward in a concave shape along the concave outer surface.SOLUTION: A fishing rod is provided with a rod body having a first cylindrical part 1. The first cylindrical part 1 includes: a radial direction under part 13 formed by a first concave outer surface concavely recessed inward in a radial direction and a first convex inner surface projecting inward in a convex shape in the radial direction along the first concave outer surface. The first cylindrical part 1 includes a first smooth part 15 provided to the first concave outer surface, and the first cylindrical part 1 includes a second smooth part 16 provided to at least one part of the outer surface except for the first concave outer surface.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a fishing rod.

Background Art

[0002] For fishing rods, there are various demands in the market depending on balance, action, ease of gripping, and ease of mounting a reel. For example, the cross-sectional shape can be elliptical, substantially inverted triangular, substantially inverted pentagonal, etc. Also, there are demands for a sudden increase in diameter in the axial direction and the formation of a bulged portion.

[0003] In response to such demands, in the method for manufacturing a fishing rod described in Patent Document 1 below, a fishing rod forming prepreg sheet in which fibers are aligned in a certain direction in a resin material is wound around a mandrel having a required shape (having a non-circular bulged portion) several times. After fitting a heat shrinkable tube to the prepreg wound portion of the mandrel at the bulged portion, a binding tape is spirally tightened so as to partially overlap over the entire length of the prepreg wound portion of the fishing rod to be formed along the outer shape of the mandrel, and it is formed into a shape along the outer shape of the mandrel, and then a heat curing treatment such as heat baking is performed. After the heat curing treatment, the binding tape is peeled off and the mandrel is removed, thereby forming a fishing rod having a shape along the outer shape of the mandrel, meeting the requirements.

[0004] Also, in the method for manufacturing a fishing rod described in Patent Document 2 below, a silicon rubber sheet or a fluororesin sheet is used to provide a concave portion on the outer surface.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] As described in Patent Document 1, when winding a prepreg sheet for forming a fishing rod and performing thermosetting treatment for forming, it is necessary to bind it with a binding tape so as to follow the shape of the mandrel. Therefore, as in Patent Document 1, it is possible to form a fishing rod having a bulging portion provided on the mandrel and a bulging portion having a shape along it, but it is not possible to form a fishing rod having a shape along a concave shape.

[0007] Further, FIG. 16 shows a cross section of the tubular body shown in FIG. 3 or FIG. 6 of Patent Document 2. In this way, it was possible to change the thickness of the tubular body such as a fishing rod and provide the recess 500 only on the outer surface, but it was not possible to provide a convex inner surface that protrudes inward along the recess 500 formed on the outer surface.

[0008] An object of the present invention is to provide a fishing rod having a complex shape having a concave outer surface that is recessed along a mandrel and a convex inner surface that protrudes convexly inward along the concave outer surface.

Means for Solving the Problems

[0009] The fishing rod according to the present invention is a fishing rod including a rod body having a first cylindrical portion, and the first cylindrical portion has an under portion formed by a concave outer surface that is recessed in a concave shape and a convex inner surface that protrudes convexly along the concave outer surface.

[0010] Further, the fishing rod according to the present invention is a fishing rod including a rod body having a first cylindrical portion, and the first cylindrical portion has a radial under portion formed by a first concave outer surface that is recessed in a concave shape toward the inner side in the radial direction and a first convex inner surface that protrudes convexly toward the inner side in the radial direction along the first concave outer surface.

[0011] Preferably, the first cylindrical portion has a first smooth portion on the first concave outer surface.

[0012] Preferably, the first cylindrical portion has a second smooth portion on at least a part of the outer surface excluding the first concave outer surface.

[0013] Preferably, the first cylindrical portion has a first spiral uneven portion on at least a part of the outer surface excluding the first concave outer surface.

[0014] Moreover, the fishing rod according to the present invention is a fishing rod provided with a rod body having a first cylindrical portion, wherein the first cylindrical portion has an axial under portion formed by a second concave outer surface that is recessed in a concave shape on the rod butt side in the axial direction and a second convex inner surface that protrudes in a convex shape on the rod butt side in the axial direction along the second concave outer surface.

[0015] Preferably, the first cylindrical portion has a third smooth portion on the second concave outer surface.

[0016] Preferably, the first cylindrical portion has a fourth smooth portion on at least a part of the outer surface excluding the second concave outer surface.

[0017] Preferably, the first cylindrical portion has a second spiral uneven portion on at least a part of the outer surface excluding the second concave outer surface.

[0018] Moreover, the fishing rod according to the present invention is a fishing rod provided with a rod body having a first cylindrical portion, wherein the first cylindrical portion has a radial under portion formed by a first concave outer surface that is recessed in a concave shape on the radially inner side and a first convex inner surface that protrudes in a convex shape on the radially inner side along the first concave outer surface, and an axial under portion formed by a second concave outer surface that is recessed in a concave shape on the rod butt side in the axial direction and a second convex inner surface that protrudes in a convex shape on the rod butt side in the axial direction along the second concave outer surface.

[0019] The fishing rod further has a second cylindrical portion that is adjacent to the first cylindrical portion in the axial direction and has a third spiral uneven portion on the outer surface.

Advantages of the Invention

[0020] As described above, a fishing rod having a complex shape with a concave outer surface that is recessed in a concave shape and a convex inner surface that protrudes in a convex shape on the inner side along the concave outer surface can be obtained along the core metal.

Brief Description of the Drawings

[0021]

Figure 1

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Mode for Carrying Out the Invention

[0022] Hereinafter, a fishing rod according to an embodiment of the present invention will be described with reference to FIGS. 1 to 7. In addition, the axial direction of the fishing rod is defined as the front-rear direction, the tip side of the rod is the front side, and the butt side of the rod is the rear side. The fishing rod includes a rod body. A fishing line guide (not shown) may or may not be provided on the rod body. The rod body is made of, for example, a fiber-reinforced resin. The rod body is hollow at least in part and is formed from a prepreg in which the fiber-reinforced resin is in a sheet shape. The rod body is composed of one or a plurality of cylindrical portions.

[0023] FIG. 1 shows a first cylindrical portion 1. The first cylindrical portion 1 is the cylindrical portion located on the rearmost side, that is, the butt side, of the rod body. The first cylindrical portion 1 is entirely cylindrical and hollow. The first cylindrical portion 1 has an outer surface 1a and an inner surface 1b. The first cylindrical portion 1 includes a small-diameter portion 10, a diameter-expanded portion 11, and a large-diameter portion 12 in order from the front side to the rear side. The small-diameter portion 10 is circular in cross-section as shown in FIG. 2(a) and is cylindrical. The large-diameter portion 12 is inverted triangular in cross-section as shown in FIG. 2(c), functions as a rear grip portion, and is gripped by the fisherman. The diameter-expanded portion 11 has a shape in which the diameter gradually expands toward the rear side, and gradually deforms from a circular cross-section to an inverted triangular cross-section toward the rear side.

[0024] The first cylindrical portion 1 has a radial under portion 13. On the outer surface 1a of the first cylindrical portion 1, a first concave outer surface 13a of the radial under portion 13 is provided. The first concave outer surface 13a of the radial under portion 13 is recessed inward in the radial direction. On the inner surface 1b of the first cylindrical portion 1, a first convex inner surface 13b of the radial under portion 13 is provided. The first convex inner surface 13b protrudes inward in the radial direction along the first concave outer surface 13a. The radial under portion 13 is provided in the diameter-expanded portion 11 and the large-diameter portion 12.

[0025] On the outer surface 1a of the first cylindrical portion 1, a first spiral concavo-convex portion 14, a first smooth portion 15, and a second smooth portion 16 are provided. The first spiral concavo-convex portion 14 is formed by a binding tape 103 (forming tape) when the first cylindrical portion 1 is fired, and it is a tape mark. The first spiral concavo-convex portion 14 is provided on the small-diameter portion 10. It is provided on the front-side portion of the outer surface of the small-diameter portion 10.

[0026] The first smooth portion 15 and the second smooth portion 16 are smooth surfaces where tape marks substantially do not exist. The first smooth portion 15 and the second smooth portion 16 are provided on at least the rear-side portion of the small-diameter portion 10, the diameter-expanded portion 11, and the front-side portion (the portion continuous with the diameter-expanded portion 11) of the large-diameter portion 12. The first smooth portion 15 is provided on the first concave outer surface 13a of the diameter-direction under portion 13 among the rear-side portion of the small-diameter portion 10 and the outer surface 1a of the diameter-expanded portion 11 and the large-diameter portion 12. The second smooth portion 16 is provided on the entire outer surface 1a excluding the first concave outer surface 13a among the rear-side portion of the small-diameter portion 10 and the outer surface 1a of the diameter-expanded portion 11 and the large-diameter portion 12. That is, the rear-side portion of the small-diameter portion 10 and the outer surface 1a of the diameter-expanded portion 11 and the large-diameter portion 12 are constituted by the first smooth portion 15 and the second smooth portion 16.

[0027] The first cylindrical portion 1 is manufactured, for example, as follows. An overview of the manufacturing method of the first cylindrical portion 1 is shown in FIGS. 4 to 7. The prepreg 101 is wound around the mandrel 100 shown in FIG. 4(a) as shown in FIG. 4(b).

[0028] The mandrel 100 includes a mandrel small-diameter portion 110, a mandrel diameter-expanded portion 111, and a mandrel large-diameter portion 112 in order from the front side to the rear side along the shape of the first cylindrical portion 1.

[0029] Also, as shown in FIG. 7, on the mandrel diameter-expanded portion 111 and the mandrel large-diameter portion 112, a mandrel under portion 113 having a shape corresponding to the shape of the first convex inner surface 13b of the diameter-direction under portion 13 is formed.

[0030] Fit the silicon tube 102 to the outer side in the radial direction of the prepreg 101 as shown in FIGS. 4(c) and 5(a). The silicon tube 102 is cylindrical and formed by molding. It is preferable that a first flange 102a and a second flange 102b are respectively formed on the outer peripheral surface of the front end portion and the outer peripheral surface of the rear end portion of the silicon tube 102. A projection 121 corresponding to the first concave outer surface 13a of the radial underpart 13 is formed on the inner peripheral surface of the silicon tube 102. Mount the silicon tube 102 in the range corresponding to the large-diameter portion 12 from the rear side portion of the small-diameter portion 10. Wind the binding tape 103 around the entire prepreg 101 wound around the mandrel 100 including the silicon tube 102 as shown in FIG. 5(b). The binding tape 103 is wound from the front side toward the rear side. After heat baking, remove the binding tape 103 as shown in FIG. 5(c), remove the heat-baked prepreg 101 from the mandrel 100, and also remove the silicon tube 102. Among the outer surfaces of the prepreg 101, the region where the silicon tube 102 is not mounted becomes the first spiral uneven portion 14 formed by the tightening of the binding tape 103, and the region where the silicon tube 102 was mounted becomes the first smooth portion 15 and the second smooth portion 16.

[0031] By winding the binding tape 103 over the silicon tube 102 in this way, the tightening force by the binding tape 103 acts on the prepreg 101 via the silicon tube 102. Therefore, even if a mandrel underpart 113 is provided on the mandrel 100, due to the projection 121 provided on the inner peripheral surface of the silicon tube 102, a tightening force is applied, and on the outer peripheral surface of the prepreg 101 after heat baking, a first concave outer surface 13a along the shape of the projection 121 provided on the inner peripheral surface of the silicon tube 102 is formed, and a first convex inner surface 13b along the shape of the mandrel underpart 113 is formed, and a first cylindrical portion 1 having a radial underpart 13 is formed.

[0032] And, since the radial underpart 13 is provided on the first cylindrical part 1, when gripping it, a large catching force in the circumferential direction can be obtained, and the grip force is increased. Further, when the first smooth part 15 and the second smooth part 16 are provided, painting in that part becomes easy, a good aesthetic feeling can be obtained, and the polishing process can also be omitted. Further, when the first spiral uneven part 14, the first smooth part 15, and the second smooth part 16 are provided, a contrast can be made between the first spiral uneven part 14, the first smooth part 15, and the second smooth part 16, and a unique aesthetic feeling can be obtained.

[0033] In addition, the second cylindrical part 2 may be joined to the front side or the rear side of the first cylindrical part 1. FIG. 8 shows, as an example, a configuration in which the second cylindrical part 2 is joined to the front side of the first cylindrical part 1. The second cylindrical part 2 may be adhesively fixed to the first cylindrical part 1, or may be provided so as to be movable in the axial direction with respect to the first cylindrical part 1, that is, to be accommodatable in the first cylindrical part 1. The second cylindrical part 2 can have a circular cross section over its entire length, and a third spiral uneven part 40 may be provided on its outer surface.

[0034] A fishing rod according to another embodiment will be described with reference to FIGS. 9 to 12. Detailed description of the same configuration as the above embodiment will be omitted. The first cylindrical part 1 in the present embodiment has, as shown in FIG. 9, a small diameter part 10, a large diameter part 12, and an axial underpart 20 in order from the front side. The cross-sectional shape of the first cylindrical part 1 is circular over its entire length. The axial underpart 20 is located at the boundary between the small diameter part 10 and the large diameter part 12. The large diameter part 12 is one diameter larger than the small diameter part 10 and has a stepped shape at the axial underpart 20. The second concave outer surface 20a of the axial underpart 20 is recessed in a concave shape toward the butt side of the rod in the axial direction. The second convex inner surface 20b of the axial underpart 20 protrudes in a convex shape along the second concave outer surface 20a toward the butt side of the rod in the axial direction.

[0035] On the outer surface 1a of the first cylindrical portion 1, a second spiral uneven portion 21, a third smooth portion 22, and a fourth smooth portion 23 are provided. The second spiral uneven portion 21 is the same tape mark as the first spiral uneven portion 14. The third smooth portion 22 and the fourth smooth portion 23 are smooth surfaces similar to the first smooth portion 15 and the second smooth portion 16.

[0036] The second spiral uneven portion 21 is provided on the small-diameter portion 10 and the large-diameter portion 12. Specifically, it is provided on the front portion of the small-diameter portion 10 and the rear portion of the large-diameter portion 12. The third smooth portion 22 is provided on the second concave outer surface 20a of the axial-direction under portion 20. The fourth smooth portion 23 is provided on the entire region of the outer surface 1a of the small-diameter portion 10 where the second spiral uneven portion 21 is not provided, and is also provided on the entire region of the outer surface 1a of the large-diameter portion 12 where the second spiral uneven portion 21 is not provided. That is, the fourth smooth portion 23 is provided on the rear portion of the small-diameter portion 10 and the front portion of the large-diameter portion 12.

[0037] An outline of the manufacturing method of the first cylindrical portion 1 is shown in FIGS. 10 to 12. As shown in FIGS. 10(a) and (b), the prepreg 101 is wound around the mandrel 100. As shown in FIG. 10(a), the mandrel 100 includes a mandrel small-diameter portion 110 and a mandrel large-diameter portion 112 in order from the front side to the rear side along the shape of the first cylindrical portion 1. Between the mandrel small-diameter portion 110 and the mandrel large-diameter portion 112, a mandrel under portion 213 having a shape corresponding to the shape of the first convex inner surface 20b of the axial-diameter direction under portion 20 is formed.

[0038] As shown in FIGS. 10(c) and 11(a), a silicon tube 102 is fitted on the radially outer side of the prepreg 101 wound around the mandrel 100. On the inner peripheral surface of the silicon tube 102, a protrusion 221 corresponding to the second concave outer surface 20a of the axial underpart 20 is formed. The silicon tube 102 is mounted in a range from the rear side portion of the small diameter part 10 to the front side portion of the large diameter part 12. As shown in FIG. 11(b), a binding tape 103 is wound around the silicon tube 102. After heat baking, as shown in FIG. 11(c), the binding tape 103 is removed, the heat-baked prepreg 101 is removed from the mandrel 100, and the silicon tube 102 is also removed. Among the outer surfaces of the prepreg 101, the region where the silicon tube 102 is not mounted becomes the second spiral uneven portion 21, and the regions where the silicon tube 102 is mounted become the third smooth portion 22 and the fourth smooth portion 23.

[0039] By winding the binding tape 103 from above the silicon tube 102 in this way, the tightening force by the binding tape 103 acts on the prepreg 101 via the silicon tube 102. Therefore, even if a mandrel underpart 213 is provided on the mandrel 100, due to the protrusion 221 provided on the inner peripheral surface of the silicon tube 102, a tightening force is applied, and on the outer peripheral surface of the prepreg 101 after heat baking, a first concave outer surface 20a along the shape of the protrusion 221 provided on the inner peripheral surface of the silicon tube 102 is formed, and a first convex inner surface 20b along the shape of the mandrel underpart 213 is formed, and the first cylindrical part 1 having the axial underpart 20 is formed. When the axial underpart 20 is provided, for example, a hand gets caught in that part, the axial movement of the hand is restricted, and a large gripping force can be obtained.

[0040] In addition, as shown in FIG. 13(a), the silicon tube 102 may be mounted over the entire length of the prepreg 101. In this case, as shown in FIG. 13(b), the entire outer surface 1a of the first cylindrical part 1 becomes a smooth surface, and the outer surface 1a of the first cylindrical part 1 is composed of the third smooth portion 22 and the fourth smooth portion 23.

[0041] FIG. 14 shows a configuration in which a cylindrical reel sheet 90 is attached to the first cylindrical portion 1. The reel sheet 90 is attached to the small-diameter portion 10. The rear end portion of the reel sheet 90 abuts against, and preferably engages with, the axial under portion 20. The axial under portion 20 functions as a stopper to prevent the reel sheet 90 from moving rearward, and the reel sheet 90 can be firmly fixed to the first cylindrical portion 1. Further, since the large-diameter portion 12 is located on the rear side of the reel sheet 90, it can be gripped well without separately attaching a grip body made of EVA or the like to the position on the rear side of the reel sheet 90.

[0042] In addition, as shown in FIG. 15, the first cylindrical portion 1 may include both a radial under portion 13 and an axial under portion 20. The axial under portion 20 is provided on the front side of the radial under portion 13, but the reverse arrangement may also be possible. The first cylindrical portion 1 in the present embodiment has, in order from the front side, a small-diameter portion 10, an axial under portion 20, a front large-diameter portion 30, a diameter-expanded portion 11, and a rear large-diameter portion 31.

[0043] The mandrel 100 includes, in order from the front side to the rear side along the shape of the first cylindrical portion 1, a mandrel small-diameter portion 110, a mandrel front large-diameter portion 112a, a mandrel diameter-expanded portion 111, and a mandrel rear large-diameter portion 112b. Between the mandrel small-diameter portion 110 and the mandrel front large-diameter portion 112a, a mandrel under portion 313 is formed corresponding to the axial-diameter under portion 20, and mandrel under portions 413 are formed in the mandrel diameter-expanded portion 111 and the mandrel rear large-diameter portion 112b corresponding to the radial under portion 13. On the inner peripheral surface of the silicone tube 102, a projection 321 corresponding to the axial-diameter under portion 20 and a projection 421 corresponding to the radial under portion 13 are formed.

Description of Reference Numerals

[0044] 1 First cylindrical portion 1a Outer surface 1b Inner surface 2 Second cylindrical portion 10 Small-diameter portion 11 Diameter-expanded portion 12 Large-diameter portion 13 Radial under portion 13a First concave outer surface 13b First convex inner surface 14 First helical uneven portion 15 First smooth portion 16 Second smooth portion 20 Axial direction under portion 20a Second concave outer surface 20b Second convex inner surface 21 Second helical uneven portion 22 Third smooth portion 23 Fourth smooth portion 30 Front large diameter portion 31 Rear large diameter portion 40 Third helical uneven portion 90 Reel sheet 100 Mandrel 101 Prepreg 102 Silicon tube 102a First flange 102b Second flange 103 Binding tape 110 Core metal small diameter portion 111 Core metal diameter-expanded portion 112 Core metal large diameter portion 112a Core metal front large diameter portion 112b Core metal rear large diameter portion 113 Core metal under portion 213 Core metal under portion 313 Core metal under portion 413 Core metal under portion 121 Protrusion 221 Protrusion 321 Protrusion 421 Protrusion 500 Concave portion

Claims

1. A fishing rod comprising a rod body having a first cylindrical portion, wherein the first cylindrical portion has a small-diameter portion, a diameter-expanding portion provided adjacent to the rod butt side of the small-diameter portion and expanding in diameter toward the rod butt side, a large-diameter portion provided adjacent to the rod butt side of the diameter-expanding portion, a first region provided on the small-diameter portion and having a spiral uneven portion of tape marks on the entire outer circumference, a second region provided adjacent to the rod butt side of the first region and extending from the small-diameter portion through the diameter-expanding portion to the large-diameter portion, and having a smooth portion on the entire outer circumference, and has the second region has a radial under portion formed by a first concave outer surface recessed inward in the radial direction and a first convex inner surface protruding inward in the radial direction along the first concave outer surface, the radial under portion is provided from the diameter-expanding portion to the large-diameter portion, the fishing rod.

2. A fishing rod comprising a rod body having a first cylindrical portion, wherein the first cylindrical portion has a first region having a spiral uneven portion of tape marks on the entire outer circumference, a second region adjacent to the first region in the axial direction and having a smooth portion on the entire outer circumference, and has the second region has an axial under portion formed by a second concave outer surface recessed inward on the rod butt side in the axial direction and a second convex inner surface protruding inward on the rod butt side in the axial direction along the second concave outer surface, the fishing rod.

3. A fishing rod comprising a rod body having a first cylindrical portion, wherein the first cylindrical portion has a first region having a spiral uneven portion of tape marks on the entire outer circumference, a second region adjacent to the first region in the axial direction and having a smooth portion on the entire outer circumference, and has the second region has a radial under portion formed by a first concave outer surface recessed inward in the radial direction and a first convex inner surface protruding inward in the radial direction along the first concave outer surface, and an axial under portion formed by a second concave outer surface recessed inward on the rod butt side in the axial direction and a second convex inner surface protruding inward on the rod butt side in the axial direction along the second concave outer surface, and has, the fishing rod.

4. A fishing rod comprising a rod body having a first cylindrical portion, wherein the first cylindrical portion has a first region having a spiral uneven portion of tape marks on the entire outer circumference, a second region adjacent to the first region in the axial direction and having a smooth portion on the entire outer circumference, and has The second region has an underpart formed by a concave outer surface that is recessed in a concave shape and a convex inner surface that protrudes convexly along the concave outer surface. The first cylindrical part A fishing rod further having a third region that is adjacent to the second region on the side opposite to the first region in the axial direction and whose entire outer circumference is constituted by the spiral uneven portion of the tape mark. **Claim 5**: A fishing rod provided with a rod body having a first cylindrical part, The first cylindrical part A first region whose entire outer circumference is constituted by the spiral uneven portion of the tape mark, A second region that is adjacent to the first region in the axial direction and whose entire outer circumference is constituted by a smooth part, and has The second region has an underpart formed by a concave outer surface that is recessed in a concave shape and a convex inner surface that protrudes convexly along the concave outer surface. The rod body is connected to the first cylindrical part and further has a second cylindrical part whose entire outer circumference is constituted by the spiral uneven portion of the tape mark.

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