JPH0956298A - Fishing rod - Google Patents

Abstract

PROBLEM TO BE SOLVED: To readily release the fittings between the extended fishing rods to facilitate the storage of the rods, moreover, increase the fitting strength in the circumferential direction to inhibit the thin rods from rotating in the peripheral direction and increase the productivity of these fishing rods. SOLUTION: This fishing rod comprises plural tubular rods 1a,... which are cylindrical, tapered and different in their thicknesses where a thinner rod is inserted into a thicker rod and they are made extensible and shrinkable to give a set of swinging guide tube type fishing rods. In this fishing rod set, a peripheral groove 2 is formed on the inside face at the top ends of the rod tube 1a and the tapered face 3 which acts as a loosening taper for the core material 5 is formed on the groove wall face on the rear end side of the peripheral groove 2, and a long and linear projection 1 is formed on the inner face of the rod tube 1a next to the peripheral groove 2 in the lengthwise direction toward the rear end side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plurality of rod pipes having a cylindrical shape and being tapered and having different thicknesses. For details on the fishing rod configured as described in (1), it is possible to easily release the fitting of the rod tubes during extension and easily store the rod tubes, yet enhance the fitting strength in the circumferential direction and to provide a thin rod tube. The present invention relates to a technology for preventing the rotation of the rod in the circumferential direction and increasing the productivity of the rod pipe.

[0002]

2. Description of the Related Art Conventionally, a plurality of rod tubes having a cylindrical shape and being tapered and having different thicknesses are made thick and thin are sequentially inserted to be made extendable and contractible so that a rod main body is formed into an extended rod shape. In the fishing rod, in the extended state of the rod pipe, the rod pipes are firmly fitted to each other in the taper, and seawater enters the fitting portion,
There was a problem that the mating force increased, a large force was required for the mating release force when inserting a thin rod tube into a thick rod tube, and it was difficult to store the rod tube and the rod tube could be damaged. .

In order to solve such a problem, as shown in Japanese Utility Model Publication No. 1-30051 shown in FIGS. 3 and 4, recesses b ... Are provided in the inner surface of the outer rod tube 1a in the circumferential direction and the rod length direction. Forming a plurality of the recesses b, the linear portion x between the recesses b is brought into contact with the outer surface of the thin rod tube 1b to form an air pocket in the recesses b,
The fitting force between the rod tubes 1a and 1b is reduced.

[0004]

However, in the case of such a structure, the fitting force becomes stronger when shaking vigorously in a state of being wet with seawater, and in the recesses b ... Sometimes it could not be formed and the original purpose could not be achieved.

Further, a rod having a swing-out structure is not used for a gaff rod for hooking a fish, because after being shaken, it is shaken out more strongly due to the impact when hooked on the rod and the load of the fish. This is because the conventional sticking structure cannot prevent sticking of the drawing rod. In order to prevent this sticking almost completely, it is sufficient to provide a step protrusion a in the circumferential direction at the outlet of the outlet rod as shown in FIG. 5, but the conventional method for processing the outlet rod, that is, the centerless polishing machine is used. The fitting polishing used requires dimensional flexibility of about ± 5 mm in the length direction (fitting length), and if the step protrusions a are formed, the fitting part will rotate in the circumferential direction and When considering the productivity (mass production) by sticking to the, the above problem could not be solved only by the step protrusions b.

The present invention has been made in view of the above problems, and an object of the present invention is to allow the rod tubes to be easily disengaged from each other when they are extended and to easily store the rod tubes. Although it can be done, the fitting strength in the circumferential direction can be increased, the production of the core material can be facilitated, the rod tube can be easily pulled out from the core material, and the productivity of the rod can be greatly improved. There is in trying to serve the pole.

[0007]

According to a first aspect of the present invention, a plurality of rod pipes 1a having a cylindrical shape and being tapered and having different thicknesses are made to be expandable and contractible by sequentially inserting a thick one and a thin one. The rod body 1 is a fishing rod configured in the form of a swing rod, and a peripheral groove 2 is formed on the inner surface of the tip end portion of the rod pipe 1a, and the rod pipe 1a is formed on the groove wall surface of the peripheral groove 2 on the rod rear end side. A tapered surface 3 that forms a draft of a core material 3 that is formed is formed, and a linear ridge 4 that is long in the rod length direction toward the rod rear end side is formed on the inner surface of the rod tube 1a adjacent to the circumferential groove 2. Is formed.

According to a second aspect of the present invention, two ridges 4 are formed at equal intervals in the circumferential direction. According to the first aspect, a sufficient gap can be formed by the air reservoir a formed in the circumferential groove 2 and the air reservoir c formed by the protrusion 4 coming into contact with the outer rod tube 1b. , The rod tubes 1a,
It is possible to avoid the strength of the fitting portion between 1b from being unnecessarily strong, to avoid requiring a large releasing force when storing the rod tubes 1a and 1b, and to easily store the rod tubes 1a and 1b. However, the ridge 4 is formed in the rod length direction,
The protrusion 4 can increase the circumferential fitting strength, can firmly prevent the rod tube 1b at the tip of the rod body 1 from rotating, and can be used not only for fishing rods but also for rod nets and guffs. It becomes effective. Moreover, the rod tube 1a ... Is different from the conventional configuration in which the concave portion is formed in the circumferential direction and the length direction.
Since the ridges 4 are formed in the lengthwise direction of the rod tube, it is possible to avoid lowering the strength of the rod tube 1a, and rather to increase the strength of the rod tube 1a. Groove 2 and ridge 4
., And the rod tube 1a ... is different from the conventional configuration in which the recesses are formed in the circumferential direction and the length direction.
Can be easily manufactured, and the rod tube 1a can be easily pulled out from the core material 5, thus improving the productivity.

In the second aspect of the present invention, the ridge 4 is in contact with the inner surface of the rod tube 1a serving as the outer tube, the air pockets c are formed on both sides of the ridge 4, and the four locations are provided on both sides of the cylindrical diameter. .. can be formed, sufficient air pool portions c can be formed, and the fitting strength in the circumferential direction can be increased by the two ridges 4.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described in detail below with reference to the drawings. The fishing rod F has a cylindrical shape and a plurality of rod pipes 1a having different thicknesses. The rod pipes 1a ... It is configured and is used as a fishing rod, a rod for a ball net with a ball net attached to the tip, a rod for a gaff with a gaff attached to the tip, and the like. For each rod tube 1a, a synthetic resin layer (prepreg) mixed with reinforcing fibers is wound around a core material 5 such as a metal rod, heated and pressure-molded, and then the core material 5 is extracted using a taper. It is to be produced. The taper is about 3/1000.

An annular peripheral groove 2 is formed on the inner surface of the tip portion of the rod tube 1a which is an outer tube. The groove bottom surface of the circumferential groove 2 is a rod pipe 1a.
The taper is approximately the same as the taper. A taper surface 3 is formed on the groove wall surface of the circumferential groove 2 on the rod rear end side, which is a draft of a core material 5 for forming the rod tube 1a. The tapered surface 3 may be such that the core material 5 can be removed.
Following the taper surface 3, a linear ridge 4 which is long in the rod length direction is formed toward the rear end side of the rod. The rear end of the ridge 4 is tapered opposite to the tapered surface 3. Ridge 4
The length is about tens of millimeters. Two ridges 4 are formed at equal intervals in the circumferential direction. The number of the ridges 4 can be changed appropriately.

A large diameter portion 6 is formed at the rear end portion of the rod pipe 1b which is an inner pipe. The ridges 4 and 4 of the outer rod tube 1a come into contact with the outer surface of the large-diameter portion 6 to form air reservoirs c and c on both sides of these two ridges 4 and the ridges 4 and 4 are formed. As shown in FIG. 2B, the inner rod tube 1b which is deformed by coming into contact with the inner rod tube 1a comes into contact with the inner surface of the outer rod tube 1a in a direction substantially orthogonal to the direction connecting the ridges 4 and 4. Of. The portion 7 thinner than the large-diameter portion 6 is formed with a gap d of about 0.25 mm with respect to the inner diameter portion 8 of the tip portion of the outer rod tube 1a, and the connection load is applied to the thin portion 7. By avoiding this, this part is prevented from breaking under the connection load.

As described above, the annular peripheral groove 2 is formed on the inner surface of the tip portion of the rod tube 1a, and the draft of the core material 3 for molding the rod tube 1a is formed on the groove wall surface of the peripheral groove 2 on the rod rear end side. The taper surface 3 is formed, and the linear protrusion 4 that is long in the rod length direction toward the rod rear end side is formed following the taper surface 3, and the air pool a formed in the circumferential groove 2 is formed. , The air pool c formed by the protrusion 4 coming into contact with the rod pipe 1a serving as the outer pipe can form a sufficient gap, and the air pools a, c are used to separate the rod pipes 1a, 1b. It is possible to avoid that the strength of the fitting portion of is excessively strong, and to avoid requiring a large releasing force when storing the rod tubes 1a and 1b, while easily storing the rod tubes 1a and 1b, The ridges 4 are formed in the rod length direction, and the recesses are formed in the circumferential direction and the length direction as in the conventional case. Compared to a configuration in which, to avoid reducing the strength of the rod tube 1a, but rather, by forming the ridge 4, it is possible to increase the strength of the rod pipe 1a.

In this case, two ridges 4 are formed at equal intervals in the circumferential direction, and the ridges 4 abut on the inner surface of the rod tube 1a serving as the outer pipe, so that air is collected on both sides of the ridge 4. c, c are formed, and the air reservoir portions c ... Can be formed at four locations sandwiching the cylindrical diameter, and a sufficient air reservoir portion c can be formed. Further, the protrusions 4 can increase the fitting strength in the circumferential direction, and can firmly prevent the rod tube 1a at the tip of the rod body 1 from rotating, and not only for fishing rods but also for nets and guffs. It is effective for the pole.

By the way, the minimum diameter e of the large diameter portion 6 is larger than the maximum diameter f of the rod tip hole through which the thin portion 7 is inserted, and the large diameter portion 6 is prevented from coming out of the rod tip hole 9. It has a stopper structure to prevent it.

[0016]

According to the present invention, a peripheral groove is formed on the inner surface of the distal end portion of the rod tube, and a tapered surface of the core material for molding the rod tube is formed on the groove wall surface of the peripheral groove on the rod rear end side. Is formed, since a long linear ridge is formed in the rod length direction toward the rod rear end side on the inner surface of the rod tube adjacent to the circumferential groove, an air pool formed in the circumferential groove, A sufficient air pool can be formed with the air pool formed by the protrusions coming into contact with the outer rod tube, and the strength of fitting between the rod tubes becomes stronger than necessary in these air pools. It is possible to avoid requiring a large releasing force when storing the rod tube,
While the rod tube can be easily stored, the ridge is formed in the rod length direction, and the ridge can increase the circumferential fitting strength and prevent the rod tube from turning around at the tip of the rod body. It can be performed firmly and is effective not only for fishing rods but also for rod nets and gaff rods. Moreover, since the rod tube has a protrusion formed in the rod length direction as compared with the conventional configuration in which the recess is formed in the circumferential direction and the length direction, it is possible to avoid lowering the strength of the rod tube, rather. The strength of the rod tube can be increased, and only the circumferential groove and the ridge are formed in the core material, and the rod tube has a concave portion formed in the circumferential direction and the longitudinal direction as compared with the conventional configuration. Therefore, there is an advantage that the core material can be easily manufactured, and the rod tube can be easily pulled out from the core material, so that the productivity as a whole can be improved.

According to a second aspect of the present invention, the ridge contacts the inner surface of the outer rod tube, air pools are formed on both sides of the ridge, and the air pool portions are formed at four positions sandwiching the cylindrical diameter. This is advantageous in that it is possible to form a sufficient air reservoir, and the circumferential strength of the two protrusions can be increased.

[Brief description of drawings]

1 shows an embodiment of the present invention, wherein (a) is a sectional view, (b) is a sectional view taken along the line AA of (a), (c) is a front sectional view, and (d) is a core material. It is sectional drawing which shows the relationship with.

2A is a cross-sectional view in a connected state, and FIG. 2B is a cross-sectional view taken along line BB in FIG.

FIG. 3 is a sectional view of a conventional example.

FIG. 4 is a cross-sectional view of a connected state of a conventional example.

FIG. 5 is a sectional view of a conventional example.

[Explanation of symbols]

 1 Rod Main Body 1a Rod Pipe 1b Rod Pipe 2 Circumferential Groove 3 Tapered Surface 4 Projection c Air Reservoir

Claims (2)

[Claims] 1. A fishing rod in which a plurality of rod pipes, which are cylindrical and tapered and have different thicknesses, are made thick and thin are sequentially inserted so that the rod body is stretchable, and the rod main body is formed into an extended rod shape. The rod has a circumferential groove formed on the inner surface of the distal end of the rod tube, and a tapered surface is formed on the groove wall surface of the circumferential groove on the rod rear end side to form the draft of the core material for forming the rod tube. A rod for fishing, characterized in that a linear projection that is long in the rod length direction is formed on the inner surface of the rod tube adjacent to the groove toward the rear end side of the rod. 2. A fishing rod characterized in that two ridges are formed at equal intervals in the circumferential direction.