JPS6227770B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a main rod of a secondary fishing rod.

BACKGROUND ART Conventionally, it has been known to mold narrower fishing rods for mountain stream rods, spatula rods, boat rods, etc. in consideration of weight reduction and rod condition.

However, with such secondary fishing rods, the rod tension is set sequentially from the tip to the main rod according to the specifications of various fishing rods, so the outer diameter of the main rod is determined by the outer diameter of the front rod beyond the main rod. Therefore, if the total length is short or slim, the original diameter, that is, the outer diameter of the grip, will inevitably be thinner, so the diameter will be smaller than a standard angler's grip, and the grip will feel bad. Since it is difficult to apply force, the rod has drawbacks such as being difficult to grip during long fishing operations and making it difficult to set the rod to fish.

In addition, in order to idealize the grip diameter of the base rod, wrap a resin sheet, paper, or thread around the grip of the base rod, or fit a cylindrical molded material such as cork, rubber, or resin onto the base rod. Although this method creates an ideal grip diameter that matches the fishing rod, it increases the overall weight, disrupts the balance of the fishing rod, increases the number of manufacturing steps, or requires the above-mentioned wrapping or fitting during long-term use. There were drawbacks such as the compound fraying or peeling off.

The present invention has been made to improve these drawbacks, and provides a secondary fishing rod in which the grip portion of the main rod can be formed into a grip portion of any thickness without being limited by the outer diameter from the tip rod. The fiber reinforced sheet impregnated with a thermosetting resin forms a tip of the base rod in a narrow diameter core metal portion of a tapered core bar having a step, the tip of which is a small diameter core bar tip from the stepped portion. After winding the fiber reinforced sheet to a thickness approximately equal to the step, a thermosetting resin-impregnated fiber reinforced sheet that is to form a grip on the large-diameter core metal portion at the rear of the step is wrapped so that a portion of the front portion of the sheet is wrapped around the tip of the original rod. Wrap it around the fiber-reinforced sheet so that it polymerizes,
The gist of this method is to then bind the outer periphery with a binding tape using a conventional method, perform a hardening process, and then pull out the core metal.

Next, the manufacturing method of the present invention will be described in detail with reference to Examples.

First, the method according to the embodiment is applicable when the step size of the core metal is approximately the same as the thickness of the fiber reinforced sheet that is rolled up on the narrow diameter part of the core metal, and the sheet is slightly thicker than the outer diameter of the narrow diameter part. In this case, the tapered core metal 2 provided with a stepped portion 1 as shown in Fig. 1 has a tip diameter of 16.5 mm3 from the stepped portion 1, a 3/1000 taper, and a total length of 300 mm. With a small diameter core part 5 with a rear end diameter of 18.30 mm 4 and an outer diameter step of 1.4 mm, the core metal dimensions from the step part 1 to the rear are the tip diameter.
19.70mm6, taper 3/1000, total length 400mm, rear end diameter
It is a core metal in which a large diameter core metal portion 8 of 22.1 mm7 is integrally formed. Next, in the process of winding the sheet around the core metal, first, the thin diameter core metal portion 5 from the stepped portion 1
A fiber reinforcing sheet 9 impregnated with a thermosetting resin having a wall thickness of 0.08 to 1.8 mm is wrapped with 4 to 5 plies to make the thickness approximately equal to the step difference, and then the step portion 1 is
In order to form a large-diameter grip portion of the rear large-diameter core portion 8, a fiber-reinforced sheet 10 impregnated with a thermosetting resin with a wall thickness of 0.08 to 0.18 mm is attached so that its front portion 11 is attached to the small-diameter core portion 8. 30 on the outer periphery of the wrapped fiber reinforced sheet 9
Wrap 4 to 5 ply so that it polymerizes with a width of mm,
Next, the cellophane tape is bound and wound from the rear end to the front end using a conventional method, and after heat treatment, the cellophane tape is peeled off, the core metal is pulled out, and the outer circumferential surface is polished and molded, and the sheet stepped portion 12 is polished into a tapered shape. and form it.

In the following example, the step dimension of the core metal is considerably larger than the thickness of the fiber-reinforced sheet wrapped around the small-diameter core metal part, and a grip part that is sufficiently large compared to the outer diameter of the tip rod is manufactured. In this case, as shown in Fig. 2, the tapered core bar 14 provided with the stepped portion 13 has a tip diameter of 16.5 mm 15 from the stepped portion 13 forward, a 3/1000 taper, a total length of 300 mm, and a narrow diameter of the rear end of 18.30 mm 16. A large diameter core metal part 20 with a tip diameter of 23.70 mm 18, a taper of 3/1000, a total length of 400 mm, and a rear end diameter of 26.1 mm 19, which has a step of 2.70 mm rearward from the core metal part 17 and the step part 13.
A fiber reinforced sheet 21 impregnated with a thermosetting resin having a wall thickness of 0.08 to 0.18 mm forms the base rod tip in the narrow diameter core metal portion 17 extending from the stepped portion 13. At the same time, a 50 mm long laminated sheet of the same quality as the above fiber reinforced sheet is used to cover the 2.06 mm thickness of the remaining step of the core metal that cannot be covered by the thickness of the wrapped layer. 22
is wrapped around the outer layer to form a thick part 23 corresponding to approximately the step difference, and further, in order to form a grip part on the large diameter core metal part 20 after the step part 13, the wall thickness is 0.08 to 0.18.
A fiber reinforcing sheet 24 impregnated with a thermosetting resin of 4 to 5 mm is wrapped in 4 to 5 plies so that its front part 25 is overlaid by 30 mm on the laminating sheet 22 of the base rod tip, and then, as in the example, a conventional method is applied. The stepped portion is polished into a tapered shape.

Therefore, when manufacturing a fishing rod according to the present invention,
Even when the tip rod is a small diameter rod with a rod tension that best matches the specifications of various fishing rods, the grip fits the size of a standard angler's hand regardless of the outer diameter of the narrow tip rod. After winding a fiber-reinforced sheet impregnated with synthetic resin around a single core metal, the thin diameter part of the main rod and the large diameter part of the grip can be strongly strengthened in one firing process. It can be integrally connected, has a good grip feel, is lightweight, and does not get stuck even during long fishing operations, and the grip is integrally formed from the same fiber-reinforced resin as the material that makes up the fishing rod. Since the fish's signal is transmitted to the hand without attenuation, it has excellent features such as being able to easily form a grip that makes it easy to fit the rod.

[Brief explanation of the drawing]

Figure 1 is a diagram showing the manufacturing method of the example, Figure 2 is a diagram showing the manufacturing method of the example.
The figure shows the manufacturing method of the example, Figure 3 is a front cross-sectional view of the molded product of the example, Figure 4 is a front cross-sectional view of the molded product of the example, and Figure 5 is a partially cutaway state of use of the example. figure. 1, 13...Step part, 2, 14...Tapered core metal, 5, 17...Small diameter core metal part, 8, 20...
...Large-diameter core metal portion, 9, 21...Fiber reinforced sheet impregnated with thermosetting resin forming the base rod tip, 10, 2
4...Fiber-reinforced sheet impregnated with thermosetting resin forming the grip portion.

Claims (1)

[Claims] 1. After wrapping a thermosetting synthetic resin-impregnated fiber reinforcing sheet that forms the base rod tip on the thin diameter core metal part from the step part of the tapered core bar provided with a step, to a thickness approximately equal to the step difference, A fiber-reinforced sheet impregnated with a thermosetting resin, in which a grip portion is to be formed on the large-diameter core metal portion rearward of the stepped portion, is wound so that a portion of the front portion thereof is superposed on the fiber-reinforced sheet at the tip of the main rod. 1. A method for manufacturing a main rod for a fishing rod, which comprises: attaching the rod, then binding the outer periphery with a binding tape using a conventional method, hardening the rod, and pulling out the core metal.