Winding – tensioning – or guiding – Reeling device – Fishing rod reel
Reexamination Certificate
2000-11-30
2003-03-18
Marcelo, Emmanuel (Department: 3654)
Winding, tensioning, or guiding
Reeling device
Fishing rod reel
Reexamination Certificate
active
06533203
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Technical Field
The present invention relates to fishing reel spools, and in particular to spinning reel spools that are reciprocative with respect to the reel body.
2. Description of Related Art
Typical spinning reels include a reel unit, a rotor, a spool, and a handle that is rotatively supported by the reel unit. The spinning-reel spool, which is reciprocative in that it shifts back and forth with respect to the reel unit, includes: a bobbin trunk onto which fishing line is wound; a front flange section disposed at the front end of, and having a larger diameter than, the bobbin trunk; and a tubular skirt portion provided at the rear of the bobbin trunk. The front flange section is fastened with a front-flange fixing member to the bobbin trunk.
Japanese Laid Open Pat. App. Nos. 49-5781 and 50-68889, for instance, disclose spools in which the bobbin trunk and the skirt portion are made unitarily from sheet metal, for example of an aluminum alloy, which serves to make the entire spool lighter.
In conventional spools thus formed from sheet metal, the bobbin trunk and the skirt portion are made to be thin. Therefore the strength of the bobbin trunk and skirt portion is diminished. Because the bobbin trunk is in particular subjected to large forces, diminishment in the bobbin trunk strength risks that the bobbin trunk will deform from line-winding.
SUMMARY OF THE INVENTION
An object of the present invention is to devise overall lightness of weight for spinning reel spools while maintaining the strength of the bobbin trunk.
Another object of the present invention is for spinning reel spools to devise a spool that is made lightweight and at the same time to suppress deformations thereof.
According to a first aspect of the present invention, a spinning reel spool that can be shifted back and forth with respect to a reel unit includes a tubular bobbin trunk for winding fishing line around its circumference, the bobbin trunk being made from a metal sheet; a skirt portion provided at a rear end of the bobbin trunk; and an inner barrel member fitted to an inner circumferential side of the bobbin trunk.
In such a spool, the bobbin trunk is made from a metal sheet, so that the spool can be made light. Moreover, an inner barrel member is fitted to an inner circumferential side of the bobbin trunk, so that the strength of the bobbin trunk can be maintained.
According to a second aspect of the present invention, in a spool as in the first aspect, the skirt portion is provided at a rear end of the bobbin trunk and is made from the metal sheet unitarily with the bobbin trunk. Thus, the bobbin trunk and the skirt portion are made unitarily from a metal sheet, so that the spool can be made lighter.
According to a third aspect of the present invention, a spool as in the first or second aspect further includes a front flange section provided at a front end of the bobbin trunk and having a diameter that is larger than the diameter of the bobbin trunk. Thus, the fishing line can be prevented from slipping off to the front, because a front flange section is provided at a front end of the bobbin trunk.
According to a fourth aspect of the present invention, in a spool as in the third aspect, the inner barrel member is made of a synthetic resin polymer. Thus, the spool can be made at low cost, while making the spool lighter.
According to a fifth aspect of the present invention, in a spool as in the third aspect, the inner barrel member is made of a light metal. Thus, the spool can be made lighter and stronger.
According to a sixth aspect of the present invention, in a spool as in the fifth aspect, the inner barrel member is made of an aluminum alloy, a titanium alloy or a magnesium alloy. Thus, the spool can be made lighter.
According to a seventh aspect of the present invention, in a spool as in the second aspect, the inner barrel member has an inner flange portion extending from a rear end of the inner barrel member along an inner side of the skirt portion. Thus, it is possible to position the inner barrel member axially with, for example, a inner flange portion that is disk-shaped or tubular, while preventing the inner barrel member from rotating by fastening the inner flange portion to the skirt portion. Furthermore, deformations of the bobbin trunk can be prevented by absorbing with the inner flange portion forces due to the winding of line that are exerted on the portion where the skirt portion rises. The inner flange portion can be provided unitarily with or separately from the inner barrel member.
According to an eighth aspect of the present invention, in a spool as in the third aspect, the inner barrel member is fastened to at least the bobbin trunk or the skirt portion by press fitting, gluing, fastening with screws or fastening with grooves.
In the case of press fitting, the inner barrel member can be fastened easily by press fitting, for example, the inner barrel member to the bobbin trunk, utilizing the elasticity of an inner barrel member made of a synthetic resin polymer. In case of gluing, the inner barrel member can be fastened tightly by applying an adhesive to the outer circumference of the inner barrel member, and gluing the inner barrel member to an inner circumferential side of the bobbin trunk, for example. In case of fastening with screws, the inner barrel member can be fastened easily by screwing the inner flange portion of the inner barrel member to the rising portion of the skirt portion, for example. In case of fastening with grooves, the inner barrel member can be fastened in a simple manner by placing the inner barrel member inside the bobbin trunk and simultaneously forming grooves in the bobbin trunk and the inner barrel member, for example by press-working thereby reducing their diameter.
According to a ninth aspect of the present invention, in a spool as in the first or second aspect, the bobbin trunk and the skirt portion are formed unitarily by press-working. Thus, it is easy to form the bobbin trunk and the skirt portion.
According to a tenth aspect of the present invention, in a spool as in the first to seventh aspects, the bobbin trunk and the skirt portion are made of an aluminum alloy, a stainless alloy, a titanium alloy or a magnesium alloy. If an aluminum alloy is used, processing the bobbin trunk and the skirt portion becomes easy, and they can be made at low cost. If a stainless alloy is used, it is possible to obtain a bobbin trunk and a skirt portion with high rigidity and to improve their corrosion resistance. If a titanium alloy is used, it is possible to obtain a bobbin trunk and a skirt portion with high rigidity and to make the bobbin trunk and the skirt portion lighter. If a magnesium alloy is used, it is possible to make the bobbin trunk and the skirt portion even lighter.
According to an eleventh aspect of the present invention, in a spool as in the first or second aspect, a plurality of groove portions extending in circumferential direction are formed in the outer peripheral surface of the bobbin trunk. Thus, the bobbin trunk can be strengthened with a plurality of groove portions formed in the outer peripheral surface of the bobbin trunk.
According to a twelfth aspect of the present invention, in a spool as in the 11th aspect, the circumferential groove portions in the bobbin trunk are formed by cutting, press-working or rolling. If the groove portions are formed by cutting, the groove portions can be formed with high precision while maintaining the strength. If the groove portions are formed by press-working, then the grooves can be formed easily by drawing, which is one kind of press-working, or by metal spinning. If the groove portions are formed by rolling, then the groove portions can be formed easily.
According to an thirteenth aspect of the present invention, in a spool as in the 11th or tenth aspects, the inner barrel member has a plurality of recesses extending in a circumferential direction in the outer peripheral surface, and the circumferential groove portions in the bobbin trunk are formed so as to fit
Furomoto Yoshiyuki
Hitomi Yasuhiro
Takikura Koji
Marcelo Emmanuel
Shimano Inc.
Shinjyu Global IP Counselors, LLP
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