Fishing rod having rod body with fitting mounted thereon, tubular body having the fitting mounted thereon, and method for manufacturing them

Patent metadata

Field	Value
Publication number	US-10912289-B2
Application number	US-201815920098-A
Country	US
Kind code	B2
Filing date	Mar 13, 2018
Priority date	Mar 14, 2017
Publication date	Feb 9, 2021
Grant date	Feb 9, 2021

Abstract

There is provided a fishing rod preventing or suppressing deviation or inclination of a fitting on a surface of a rod body. The fishing rod includes an elongated cylindrical rod body, a fitting having a mounting portion and mounted to an outer peripheral surface of the rod body via the mounting portion, a first layer formed by winding a first sheet so as to enclose the mounting portion and the rod body, the first sheet being made of a fiber-reinforced resin or a resin having a thermal shrinkage rate of 2.5% or lower, and a second layer formed by winding a second sheet made of a fiber-reinforced resin on an outer side of the first sheet, wherein a temperature at which a loss tangent of the first sheet has a maximum value is different from a temperature at which a loss tangent of the second sheet has a maximum value.

First claim

What is claimed is:

1. A fishing rod, comprising:
an elongated cylindrical rod body;
a fitting having a mounting portion and mounted on an outer peripheral surface of the rod body via the mounting portion;
a first layer formed by winding a first sheet so as to enclose both of the mounting portion and the rod body, the first sheet being made of a fiber-reinforced resin or a resin having a thermal shrinkage rate of 2.5% or lower measured pursuant to JIS K 7133; and
a second layer formed by winding a second sheet on an outer side of the first sheet, the second sheet being made of a fiber-reinforced resin,
wherein a temperature at which a loss tangent (tan δ) of the first sheet has a maximum value is different from a temperature at which a loss tangent (tan δ) of the second sheet has a maximum value, the loss tangent (tan δ) of the first sheet being calculated from dynamic viscoelasticity measurement at a frequency of 1 Hz, the loss tangent (tan δ) of the second sheet being calculated from dynamic viscoelasticity measurement at a frequency of 1 Hz.

2. The fishing rod according to claim 1 , wherein the temperature at which the loss tangent (tan δ) of the first sheet has a maximum value is higher than the temperature at which the loss tangent (tan δ) of the second sheet has a maximum value.

3. The fishing rod according to claim 1 , wherein the temperature at which the loss tangent (tan δ) of the first sheet has a maximum value is lower than the temperature at which the loss tangent (tan δ) of the second sheet has a maximum value.

4. The fishing rod according to claim 1 , wherein the temperature at which the loss tangent (tan δ) of the first sheet has a maximum value is 10° C. or more higher than the temperature at which the loss tangent (tan δ) of the second sheet has a maximum value.

5. The fishing rod according to claim 1 , wherein the temperature at which the loss tangent (tan δ) of the first sheet has a maximum value is 10° C. or more lower than the temperature at which the loss tangent (tan δ) of the second sheet has a maximum value.

6. The fishing rod according to claim 1 , wherein the first sheet has a storage elastic modulus of 0.01 MPa to 10,000 Mpa at 80° C. to 140° C.

7. The fishing rod according to claim 1 , wherein the first sheet is a sheet formed by impregnating fibers with a composition including a thermosetting resin, a simple resin sheet, or a resin sheet having an adhesive layer.

8. The fishing rod according to claim 1 , wherein the second sheet is a sheet formed by impregnating glass fibers, carbon fibers, or resin fibers with a composition including a thermosetting resin.

9. The fishing rod according to claim 1 , wherein the fitting is a line guide.

10. The fishing rod according to claim 1 , wherein the fitting is a reel seat.

Assignees

• Globeride Inc

Inventors

• Kawamura Takuji
• Izaki Nobuhiro

Classifications

• B29C70/30

  Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core · CPC title

• B29C70/86

  Incorporated in coherent impregnated reinforcing layers, {e.g. by winding} · CPC title

• B32B2313/04

  Carbon · CPC title

• B32B2260/046

  Synthetic resin · CPC title

• B32B2262/0276

  Polyester fibres · CPC title