JP4321834B2 - Fishing rod bottom plug structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure of a bottom plug that is attached to an end face of the rod side of a rod constituting a fishing rod.
[0002]
[Prior art]
As shown in FIGS. 6 and 7, the conventional casing 50 is a cylindrical member made of a prepreg in which a reinforcing fiber such as a carbon fiber is impregnated with a synthetic resin. have. Then, the end plug 60 is screwed onto the female screw portion 51 so as to be freely attached and detached. The butt plug 60 is formed continuously with the male screw part 61 screwed into the female screw part 51 and the base side of the male screw part 61, and is provided on the base side of the male screw part 61. The screw head 62 is formed so as to coincide with the outer diameter of the screw head 62. An O-shaped ring 63 is arranged on the male screw 61 side of the screw head 62. The ring 63 has a circular cross section, and is made of, for example, a metal such as stainless steel or aluminum, an alloy, or a synthetic resin.
[0003]
When the bottom plug 60 is attached to the housing 50, when the male screw portion 61 is gradually screwed into the female screw portion 51, the ring 63 is finally inserted so as to slide between the bottom plug 60 and the housing 50. To do. The bottom plug 60 is sufficiently fixed to the housing 50 to increase the circumferential rotational torque of the bottom plug 60 to prevent circumferential slack.
[0004]
[Problems to be solved by the invention]
In the conventional butt plug structure, since the ring 63 is sandwiched between the butt plug 60 and the casing 50 in the final state where the butt plug 60 is screwed to the casing 50, the butt plug 60 is screwed to the casing 50. If this is done, the rotational torque will increase abruptly at the end. For this reason, not only is it difficult to attach the buttocks plug 60 to the end, and if the buttocks plug 60 is loosened somewhat after installation, the rotational torque is rapidly reduced, and the buttocks plug 60 is easily loosened. In particular, in fishing rods, fishermen often perform fishing while placing the butt plug portion against a part of the body, and the butt plug is likely to rotate. Therefore, it is desirable to suppress such a rapid decrease in rotational torque.
[0005]
An object of the present invention is to provide a bottom plug structure for a fishing rod that is easy to attach and difficult to loosen.
[0006]
[Means for Solving the Problems]
Structure according to the invention 1 is a structure of a butt plug attached to rod root side of the cylindrical rod body, and a female screw member that is provided on the rod root side end portion peripheral surface of the rod body, the female screw portion A male screw part that is screwed into the material , a neck part that is smaller in diameter than the male screw part on the base side of the male screw part, and an outer diameter that is provided on the base side of the neck part. a butt plug body having a screw head which substantially coincides with the rod source side outer peripheral surface, a ring-shaped member disposed between the male screw portion and the screw head of the butt plug body in a state of penetrating into the neck, A ring whose outer diameter is gradually reduced from the screw head side to the male screw part side, the male screw part side outer diameter of the ring being smaller than the male screw part outer diameter, and the screw of the ring The head-side outer diameter is larger than the inner diameter of the female screw member, and the ring is not easily inserted between the female screw member and the bottom plug body. Characterized in that it is intended to go in.
[0007]
When attaching the bottom plug body to the housing, insert the bottom plug body into the housing while screwing the male thread portion of the bottom plug body into the female thread portion. The ring outer peripheral surface gradually comes into contact. The outer periphery of the ring is a taper with the outer diameter increasing toward the screw head side, and the degree of biting between the ring housing and butt plug body increases according to the degree of screwing to the female screw part of the butt plug body. . That is, the rotational torque of the butt plug body gradually increases in accordance with the degree of screwing into the female thread portion of the butt plug body. As a result, the butt plug body is easy to attach to the housing and is not easily loosened immediately.
[0008]
In this case, since the ring is stably arranged on the neck portion of the butt plug body, the work of detaching the butt plug body from the housing becomes easier.
[0009]
In this case, since the outer diameter of the male screw portion side end of the ring is smaller than the outer diameter of the male screw portion, the ring easily slides into the gap between the bottom plug body and the housing. Further, the screw head side outer diameter of the ring by well secured and are butt plug body and rod body larger in diameter than the inner diameter of the female screw member, sufficiently increased rotational torque of the butt plug body.
[0010]
The structure which concerns on invention 2 is a structure of invention 1, Comprising: An internal thread member is an internal thread part by which the screw thread was directly formed in the internal peripheral surface of a housing , It is characterized by the above-mentioned . In this case, the female screw member is directly formed on the housing, and the strength of the female screw member is improved.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
[First Embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the punch through which the first embodiment of the present invention is used is a bonito 1, a motogami cocoon 2 connected to the tip side of the cocoon 1, and a tip side of the motogami cocoon 2. The first middle collar 3 and the second middle collar 4 connected to each other, and the tip middle collar 5 connected to the tip side of the second middle collar 4. These base rod 1 to tip rod 5 are tapered tubular members formed from prepregs in which carbon fiber or glass fiber is impregnated with synthetic resin, and have a fishing line passage inside. The first center rod 2 to the tip rod 5 are inserted into the inner frame of the rod side in order from the tip side and can be freely inserted and removed, and are connected in a so-called swing-out manner.
[0012]
The main rod 1 has a reel seat 8 formed on the outer peripheral surface to which the reel 7 can be detachably attached, and a tail plug 10 is detachably attached to the end portion on the heel side. In addition, a fishing line introduction hole 9 is formed in the former upper rod 2 to introduce the fishing line L from the reel 7 into the rod body and is disposed so as to cover the fishing line introduction hole 9. A fishing line guide G is fixed. A top guide 6 is attached to the end of the tip of the tip of the tip 5, and the fishing line L from the reel 7 is guided to the fishing line passage through the fishing line guide G and the fishing line introduction hole 9, and from the top guide 6 on the tip side. Guided outside.
[0013]
As shown in FIG. 2 and FIG. 3, the base rod 1 is a tubular member having a slightly tapered taper, and a cylindrical shape in which a thread is formed on the inner peripheral side of the inner peripheral surface of the base end portion. The female screw member 20 is attached. The female screw member 20 is inserted into the base rod 1 and has a screw portion 20a having a thread formed on the inner peripheral surface thereof, and a flange portion 20b formed to have a larger diameter than the screw portion 20a and projecting from the base side end surface of the base rod 1. And have. The female screw member 20 is fixed by an adhesive or the like in a state where the screw portion 20a is inserted into the main shaft 1 and the flange portion 20b is in contact with the end portion of the main surface of the main shaft 1.
[0014]
As shown in FIGS. 2 to 4, the bottom plug 10 includes a male screw part 11, a neck part 12 formed on the base side of the male screw part 11 with a smaller diameter than the male screw part 11, and a base side of the neck part 12. And a screw head 13 having an outer diameter substantially coincident with the outer peripheral surface of the base side of the base 1. Further, a ring 14 is disposed in the neck portion 12 with the neck portion 12 penetrating therethrough. The male screw portion 11 is a portion that can be screwed into the screw portion 20 a of the female screw member 20. The neck portion 12 is formed integrally with the male screw portion 11. The neck 12 is a columnar part not provided with a thread. The screw head 13 is a cylindrical member having a fixing hole 13a in which the neck 12 is inserted and fixed to one end surface. This is a portion that is picked by the angler and rotates the bottom plug 10, and a non-slip groove 13 b is formed on the outer peripheral side surface in the entire circumferential direction. The screw head 13 is fixed to the neck 12 by bonding or the like with the ring 14 inserted through the neck 12 and the end of the neck 12 inserted into the fixing hole 13a.
[0015]
As shown in detail in FIG. 4, the ring 14 is a ring-shaped member made of a metal such as aluminum, stainless steel, steel, or an alloy thereof, or a synthetic resin such as ABS resin. You may utilize the rubber material which has elasticity as needed. The outer diameter of the side surface is gradually reduced from the screw head 13 side to the male screw portion 11 side to form a taper. Specifically, the outer diameter of the ring 14 on the male screw portion 11 side is smaller than the outer diameter of the male screw portion 11, and the outer diameter of the screw head 13 side is larger than the inner diameter of the flange portion 20 b of the female screw member 20. The length of the ring 14 in the axial direction depends on the length of the bottom plug 10 in the axial direction, and various sizes can be adopted.
[0016]
When the bottom plug 10 is attached to the main shaft 1, the bottom plug 10 is inserted into the main shaft 1 while the male screw portion 11 is screwed into the female screw member 20. As it is inserted, the outer peripheral surface of the ring 14 gradually comes into contact with the flange portion 20b of the female screw member 20. The ring 14 is disposed on the neck portion 12 and digs into the space between the main shaft 1 and the bottom plug 10 in a stable state. The outer diameter of the ring 14 on the male screw portion 11 side is smaller than the outer diameter of the male screw portion 11, and the outer diameter of the screw head 13 side is larger than the inner diameter of the flange portion 20 b of the female screw member 20. Accordingly, the degree of biting of the ring 14 between the main shaft 1 and the bottom plug 10 increases according to the degree of screwing of the bottom plug 10 to the female screw member 20. That is, the rotational torque of the bottom plug 10 gradually increases according to the degree of screwing of the bottom plug 10 to the female screw member 20.
[0017]
[Second Embodiment]
Hereinafter, a second embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 5, the base rod 1 is a cylindrical member having a slightly tapered taper, and a cylindrical female screw having a thread on the inner peripheral side on the inner peripheral surface of the base side end portion. A member 20 is attached. Similar to the first embodiment, the female screw member 20 is inserted into the main shaft 1 and has a screw portion 20a having a thread formed on the inner peripheral surface thereof, and has a diameter larger than that of the screw portion 20a. And a flange portion 20b projecting from the side end surface.
[0018]
The bottom plug 30 includes a male screw part 31 and a screw head 33 that is provided continuously on the base side of the male screw part 31 and whose outer diameter substantially matches the outer peripheral surface of the base side of the base part 1. Yes. And the ring 34 is arrange | positioned in the state which the external thread part 31 penetrated.
Similarly to the first embodiment, the ring 34 is a ring-shaped member made of a metal such as aluminum, stainless steel, steel, or an alloy thereof, or a synthetic resin such as ABS resin. The outer diameter of the side surface gradually decreases from the screw head 33 side to the male screw portion 31 side, and a taper is formed. Specifically, the inner diameter of the ring 34 is substantially the same as the outer diameter of the male screw portion 31, and the outer diameter of the male screw portion 31 is slightly larger than the outer diameter of the male screw portion 31. Is larger than the inner diameter of the flange portion 20 b of the female screw member 20.
[0019]
When the bottom plug 30 is attached to the main rod 1, the bottom plug 30 of the inside through rod configured in this way is inserted into the main rod 1 while the male screw portion 31 is screwed into the female screw member 20. As it is inserted, the outer peripheral surface of the ring 34 gradually comes into contact with the flange portion 20b of the female screw member 20. The ring 34 digs into the space between the Marshal 1 and the butt plug 30. The degree of biting of the ring 34 between the main shaft 1 and the bottom plug 30 increases according to the degree of screwing of the bottom plug 30 to the female screw member 20. That is, the rotational torque of the bottom plug 30 gradually increases according to the degree of screwing of the bottom plug 30 to the female screw member 20. As a result, it is easy to attach the butt plug 30, and even after the butt plug 30 is rotated, the rotational torque thereof is not easily loosened without rapidly decreasing.
[0020]
[Other Embodiments]
(A) A thread may be directly formed on the inner peripheral surface of the heel side of the heel 1.
(B) In each of the above embodiments, a case of a through rod is illustrated, but the present invention is not limited by the type of fishing rod. Therefore, various fishing rods such as mountain stream rods and boat rods can be applied.
[0021]
【The invention's effect】
According to the bottom plug structure according to the present invention, it is easy to attach the bottom plug and the bottom plug is difficult to loosen.
[Brief description of the drawings]
FIG. 1 is an overall view of a fishing rod adopting a first embodiment of the present invention.
FIG. 2 is an enlarged view of the vicinity of the heel side in FIG.
FIG. 3 is an enlarged cross-sectional view near the base side of FIG.
FIG. 4 is an enlarged view of a ring.
FIG. 5 is an enlarged cross-sectional view of the vicinity of the heel side of a through hole that employs the second embodiment of the present invention.
FIG. 6 is an enlarged cross-sectional view of a fishing rod side of a conventional fishing rod.
7 is an enlarged view of the ring of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Genroku 2 Original upper collar 10,30 Bottom plug 11,31 Male thread part 12 Neck part 13,33 Screw head part 14,34 Ring 20 Female thread member

Claims (2)

It is a structure of a bottom plug attached to the base side of a cylindrical casing,
A female screw member provided on the inner peripheral surface of the base side end of the casing;
A male screw part screwed into the female screw member; a neck part formed on the base side of the male screw part with a smaller diameter than the male screw part; and an outer diameter provided on the base side of the neck part. A bottom plug body having a screw head substantially coinciding with the flange-side outer peripheral surface of the casing;
A ring-shaped member disposed between the male screw portion and the screw head in a state of penetrating the neck portion, and a ring whose outer diameter is gradually reduced from the screw head side to the male screw portion side; With
The outer diameter of the ring on the male screw portion side is smaller than the outer diameter of the male screw portion, and the outer diameter of the screw head side of the ring is larger than the inner diameter of the female screw member,
A bottom plug structure for a fishing rod, wherein the ring is inserted between the female screw member and the bottom plug body. The female screw member is a female screw portion which directly threaded on the inner peripheral surface of the rod body is formed
The bottom plug structure for a fishing rod according to claim 1.

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