JP3325183B2 - fishing rod - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fishing rod, and more particularly to a fishing rod having a threaded portion or a component for a fishing rod.

[0002]

2. Description of the Related Art A fishing rod has a component attached by screwing, such as a tail plug. Since the parts attached by these screws can be easily attached and detached by the angler's hand, there is a problem that the parts are easily loosened.

[0003] To solve such a problem, Japanese Utility Model Publication No. 1-30055 discloses a method in which a butt plug is elastically deformed when a butt plug is screwed between a butt plug and a rod butt that abut each other. A fishing rod having a rod end structure provided with a direction lip is disclosed. In this rod end structure, the opening end of the end plug is pressed against the lip and elastically deformed, and the end plug is fixed by the elastic restoring force of the lip.

[0004]

In the rod end structure disclosed in the above publication, the lip is elastically deformed in the direction of tightening the screw, which is the axis direction of the fishing rod, to prevent loosening. However, since the elastic restoring force against the tightening pressure always acts in the loosening direction of the screw (the same direction as the axis of the fishing rod), if the butt plug starts to loosen even a little, the loosening is promoted and the loosening is reliably prevented. Can not do it. The present invention has been made in view of the above, and an object of the present invention is to provide a fishing rod having a structure capable of reliably preventing a threaded portion from loosening.

[0005]

Means for Solving the Problems The present inventors have developed a fishing rod which effectively prevents the loosening of the threaded portion by utilizing the elastic deformation of the threaded portion. That, fishing rod of the present invention is a fishing rod screwed to Shirisen the rod butt, to contain Li Kui particles of a material softer than the material of the threaded portion of said rod butt and butt plug A coating is formed on the surface of the threaded portion and also between the end of the rod tube and the flange portion of the butt plug, which are in contact with each other, and repels the coating against the fastening force of the butt plug. It is characterized by exerting elastic force.

[0006]

Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a sectional view showing a threaded portion of the fishing rod of the present invention. In the drawing, reference numeral 1 denotes a rod pipe. A female screw is formed on the inner surface of the rod end of the rod tube 1. A tail plug 2 is attached to the bottom of the rod 1. That is, a male screw is formed at the opening end of the buttocks 2, and the female screw of the rod tube 1 and the male screw of the buttocks 2 are screwed together to form the screwing portion 3. The coating 4 is formed on the surface of the female screw at the bottom of the rod of the rod tube 1 and the surface of the male screw at the open end of the tail plug 2. At the bottom of the opening of the butt plug 2, an impact absorbing material 5 for absorbing an impact when the rod tube to be stored therein is stored or dropped is provided.

The rod tube 1 is formed by winding a fiber reinforced prepreg in which a reinforcing fiber such as carbon fiber, glass fiber, alumina fiber, and aramid fiber is impregnated with a synthetic resin such as epoxy resin, phenol resin, and polyester. No.

The female screw formed at the rod end of the rod tube 1 may be formed by threading after forming the rod tube, or may be formed by a separate member from the rod tube and attached to the rod end.
When configuring the female screw of Saoshiri separate members and rod tube, aluminum material of the female I <br/> Ji unit, brass, Ti, a metal such as stainless steel; alumina, zirconia, ceramics such as silicon nitride A polyamide resin, an ABS (acrylonitrile-butadiene-styrene) resin, a polyacetal resin,
A hard synthetic resin such as FRP is exemplified.

The stopper 2 is made of a metal such as aluminum, brass, Ti, stainless steel, etc .; a ceramic such as alumina, zirconia, silicon nitride, etc .; It is made of a synthetic resin or the like. The male screw formed at the opening end of the buttocks 2 may be formed by threading after forming the buttocks or may be formed integrally when the buttocks are formed.

[0010] The coating 4 is made of a material constituting the threaded portion 3, specifically, a material softer than a material constituting the female screw and / or the male screw. Examples of such a material include rubbers such as natural rubber (NR), nitrile rubber (NBR), and chloroprene rubber (CR); soft resins such as foamed resins, elastomers, and thermosetting resins such as flexible epoxy resins. And the like. In addition, softer than the material which comprises a screw part means that hardness is lower than the material which comprises a screw part.

Among such materials, those having a large static friction coefficient are particularly preferable because they exhibit an effect of preventing loosening due to friction at the time of screwing. Further, particles that enhance the friction effect (anti-slip effect) of the coating 4 may be added to the above material. Examples of such particles include particles having a higher coefficient of friction than the material of the coating 4, particles having irregularities on the surface, particles having a roughened surface, needle-like particles, particles having corners such as acute corners, and the like. Is mentioned. Examples of the material of these particles include metals such as aluminum, titanium and magnesium; ceramics such as alumina, glass and silicon carbide; and synthetic resins such as epoxy resin, urethane resin and acrylic resin.

As shown in FIG. 1, the coating 4 may be formed on a portion other than the screwed portion 3, or may be formed only on the screwed portion 3. Further, in FIG. 1, the coating 4 is formed on both the female screw at the rod end of the rod tube 1 and the male screw at the open end of the butt plug 2, but if the coating 4 is formed on the threaded portion, The coating 4 may be formed only on the female screw, or the coating 4 may be formed only on the male screw.

FIG. 2 is an enlarged sectional view showing the external thread 31 of the threaded portion 3 of FIG. The coating 4 may be formed only on the crests 33 or only on the troughs 34 of the male screw 31. Further, the thickness formed at the valley 34 may be larger than the thickness formed at the peak 33. By forming only the valley portion 34 or making the thickness formed in the valley portion 34 larger than the thickness formed in the ridge portion 33, the ridge portion of the female screw is formed in the valley portion 34.
And the threaded portion can be effectively prevented from loosening.

Further, by forming the coating film 4 only on one of the inclined surfaces of the male screw 31, a strong resistance may be generated when the screw is loosened or tightened. Further, by forming the coating 4 only on the end of the female screw (the base of the male screw), resistance may be generated when the screw is tightened to some extent.

The thickness of the coating 4 is set to several μm to several hundred μm in consideration of the elastic deformation, flexibility, wear resistance, fitting of screws, etc. of the coating 4.
m is preferable. The coating 4 is formed by forming a screw, that is, a female screw or a male screw, and then coating, dipping, brushing, or printing the material on the surface by spraying the material. The coating 4 may be formed on the screw surface at the same time as the screw is formed.

In the rod end structure having the above structure, when the tail plug 2 is fastened to the rod tube 1, the ridge of the male screw and the ridge of the female screw bit into the coating 4 formed on the screw portion 3 and screwed. Looseness in the part 3 is prevented. Further, the presence of the coating 4 between the male screw and the female screw increases the friction between the male screw and the female screw, thereby preventing loosening. Further, when a tightening force when the buttocks plug 2 is tightened to the rod tube 1 is applied to the coating film 4, an elastic force repelling the tightening force is exerted to prevent loosening.

Further, as shown in FIG. 1, the coating 4 is formed between the end portion 1a of the rod tube 1 and the flange portion 2a of the buttocks 2 which are in contact with each other, so that loosening is more effectively prevented. Is done.

As described above, in the fishing rod having the rod end structure as described above, the locking force of the film 4 acts in a direction substantially perpendicular to the tightening direction and the loosening direction of the screw of the threaded portion, ie, the radial direction. but Ru is prevented.

According to this structure, even if the screwing portion is slightly loosened, the loosening does not progress from that state, and the screwed state can be reliably maintained for a long time. In the above embodiment, the threaded portion of the rod end of the fishing rod has been described, but the present invention is not limited to this, and for example, the threaded portion of the reel sheet, the detachable threaded portion of the top guide of the through rod, Threaded structure of fishing line introduction guide, threaded part of other outer guide,
The present invention can be applied to other fishing gear having a threaded portion.
Further, the present invention can be applied to a fitting / removing structure other than the screwing structure.

[0020]

As described above, the fishing rod of the present invention is
The than the material forming the threaded portion of the rod butt and butt plug you containing Li Kui particles of a material softer coating, thereby forming on the surface of the engagement portion, the end portion of the rod tube in contact with each other and also formed between the flange portion of Shirisen, friction by the containing particles
Since the coating with enhanced effect exerts an elastic force that repels the tightening force of the butt plug, it is possible to reliably prevent the butt plug from loosening.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a threaded portion of a fishing rod of the present invention.

FIG. 2 is an enlarged cross-sectional view showing a male screw of a threaded portion in FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Rod pipe, 1a ... End part, 2 ... Butt plug, 2a ... Flange part,
Reference numeral 3 denotes a threaded portion, 4 denotes a coating, 5 denotes a shock absorber, 31 denotes a male screw portion, 32 denotes an inclined surface, 33 denotes a peak, and 34 denotes a valley.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-286607 (JP, A) JP-A-63-235712 (JP, A) JP-A-4-19418 (JP, A) JP-A-6-286 JP-A-7-305712 (JP, A) JP-A-47-558 (JP, U) JP-A 50-128563 (JP, U) JP-A-63-128312 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) A01K 87/00 F16B 39/22

Claims (1)

(57) [Claims] 1. A fishing rod in which a butt plug is screwed into the bottom of the rod,
The coating you containing Li Kui particles of a material softer than the material forming the threaded portion of said rod butt and butt plug, and forming on the surface of the threaded portion, said rod tube abutting each other A fishing rod characterized in that it is also formed between the end and the flange of the butt plug, and causes this coating to exert an elastic force that repels the tightening force of the butt plug.