fishing rod

Abstract

This design ensures the strength of the rod body while preventing circumferential phase misalignment between rod bodies when shortened. [Solution] The device comprises a first rod body 1, a second rod body 2 which is switchable between a shortened state in which the second rod body 2 protrudes from the first rod body 1 toward the rod tip by a first protrusion length and an extended state in which the second rod body 2 protrudes from the first rod body 1 toward the rod tip by a second protrusion length longer than the first protrusion length, and is held by the first rod body 1 in each state, and a phase adjustment unit 50 provided on the first butt portion 1a of the first rod body 1 which adjusts the circumferential phase of the second rod body 2 relative to the first rod body 1 in the shortened state.

Description

Technical Field

[0001] The present invention relates to a fishing rod that can be switched between a shortened state and an extended state.

Background Art

[0002] In the fishing rod described in Patent Document 1 below, the overall length of the fishing rod can be changed according to the situation. That is, this fishing rod includes a base rod (first rod body) located on the most butt side and a base upper rod (second rod body) connected to the tip side of the base rod. A reel seat is attached to the base rod, and a fishing line guide is attached to the base upper rod. And in this fishing rod, the base upper rod can be fixed to each of an extended state pulled out from the base rod and a shortened state inserted into the base rod, and fishing can be performed in each state.

[0003] However, since the base upper rod can rotate in the circumferential direction with respect to the base rod, when switching from the extended state to the shortened state, the circumferential phase between the fishing line guide and the reel seat may shift. Therefore, the angler has to switch from the extended state to the shortened state while paying attention so that the circumferential phase between the fishing line guide and the reel seat does not change. Also, when the circumferential phase between the fishing line guide and the reel seat is shifted when switching from the extended state to the shortened state, the angler has to rotate the base upper rod in the circumferential direction to eliminate the phase shift. Therefore, fishing cannot be immediately performed even after switching to the shortened state.

[0004] On the other hand, in the fishing rod of Patent Document 2 below, the base rod is provided with a slit, and in the shortened state, it has a structure that allows the fishing line guide of the base upper rod to enter the slit. Therefore, the circumferential phase shift of the fishing line guide with respect to the reel seat in the shortened state is prevented. However, since the base rod is provided with a slit, the strength of the base rod is likely to be insufficient.

[0005] Furthermore, the problem of circumferential phase misalignment of the upper butt section relative to the butt section in such a shortened state can also occur in fishing rods that do not have a reel seat or line guide. For example, if a first high-rigidity section is provided on a part of the entire circumference of the butt section, and a second high-rigidity section is provided on a part of the entire circumference of the upper butt section, the circumferential positions of the first high-rigidity section of the butt section and the second high-rigidity section of the upper butt section must be aligned. In such cases as well, the problem of circumferential phase misalignment of the upper butt section relative to the butt section in the shortened state can occur. Similarly, if the uneven or patterned parts provided on the outer surface of the upper butt section are aligned circumferentially with the uneven or patterned parts provided on the outer surface of the butt section, the problem of circumferential phase misalignment in the shortened state can also occur. [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Japanese Patent Publication No. 2004-173682 [Patent Document 2] Japanese Patent Publication No. 2003-235407 [Overview of the Initiative] [Problems that the invention aims to solve]

[0007] The present invention aims to prevent circumferential phase misalignment between rod bodies in a shortened state while ensuring the strength of the rod body. [Means for solving the problem]

[0008] The fishing rod according to the present invention comprises a first rod body, a second rod body, and a phase adjustment unit. The second rod body is switchable between a shortened state and an extended state. In each state, the second rod body is held by the first rod body. In the shortened state, the second rod body protrudes from the first rod body toward the rod tip by a first projection length. In the extended state, the second rod body protrudes from the first rod body toward the rod tip by a second projection length. The second projection length is longer than the first projection length. The phase adjustment unit is provided at the first butt end of the first rod body. The phase adjustment unit adjusts the circumferential phase of the second rod body relative to the first rod body in the shortened state.

[0009] In this configuration, the second rod body enters a shortened state by a predetermined length radially inward toward the butt end of the first rod body from its extended state. When changing from the extended state to the shortened state, the phase adjustment unit adjusts the circumferential phase of the second rod body relative to the first rod body. If the second rod body is out of phase circumferentially relative to the first rod body in the shortened state, the phase adjustment unit automatically corrects this phase misalignment and aligns the circumferential phases between the first and second rod bodies.

[0010] In detail, when the second rod body is shortened, the butt end of the second rod body comes into contact with the phase adjustment unit. When the butt end of the second rod body comes into contact with the phase adjustment unit, the phase adjustment unit rotates the second rod body circumferentially to correct the circumferential phase misalignment of the second rod body. When a phase misalignment occurs, the contact state of the butt end of the second rod body with the phase adjustment unit is different compared to when there is no phase misalignment. The phase adjustment unit rotates the second rod body circumferentially so that the contact state when a phase misalignment occurs is the same as the contact state when there is no phase misalignment.

[0011] More specifically, the phase adjustment unit rotates the second rod circumferentially, using the movement of the second rod toward the butt end when the second rod is shortened as the driving force. If a phase misalignment occurs, the phase adjustment unit converts the linear motion of the second rod toward the butt end into rotational motion in the circumferential direction, causing the second rod to rotate circumferentially. As the phase adjustment unit rotates the second rod circumferentially, the second rod rotates circumferentially while moving toward the butt end. The circumferential rotation angle of the second rod at this time corresponds to the magnitude of the phase misalignment. If the phase misalignment is large, the amount of correction by the phase adjustment unit becomes large, and the circumferential rotation angle of the second rod also becomes large. Conversely, if the phase misalignment is small, the amount of correction by the phase adjustment unit becomes small, and the circumferential rotation angle of the second rod also becomes small.

[0012] In this way, by providing a phase adjustment section at the butt end of the first rod, the circumferential phase of the second rod is automatically set to a predetermined state when the second rod is switched to the shortened state. Therefore, when the angler switches the second rod to the shortened state, they do not need to correct the circumferential phase misalignment of the second rod and can immediately concentrate on fishing after switching to the shortened state. In addition, since it is not necessary to form a slit at the tip end of the first rod, a reduction in the strength of the fishing rod can be prevented.

[0013] In a fishing rod according to a second aspect of the first aspect of the present invention, the phase adjustment section has a first inclined surface and a second inclined surface. The first inclined surface is provided on the radially inward side of the first butt end of the rod. The first inclined surface is inclined with respect to the axial direction of the fishing rod. The second inclined surface is provided on the second butt end of the second rod body. The second inclined surface is parallel to the first inclined surface. The second inclined surface contacts the first inclined surface when the rod is shortened. With this configuration, the second inclined surface contacts the first inclined surface when the rod body is shortened. If a phase misalignment occurs, the second inclined surface rotates circumferentially while sliding against the first inclined surface. The rod body rotates until the second inclined surface is parallel to the first inclined surface. When the second inclined surface becomes parallel to the first inclined surface, the phase misalignment is eliminated, and the circumferential phase of the second rod body is set to a predetermined phase.

[0014] In a fishing rod according to a third aspect of the present invention, the first rod body is provided with a first butt cap at the first butt portion. The first inclined surface is provided on the tip end face of the first butt cap. With this configuration, the first inclined surface can be easily provided radially inward of the first butt portion.

[0015] In a fishing rod according to a fourth aspect of the present invention, which is based on the second or third aspect, the second rod body comprises a blank made of fiber-reinforced resin. The second inclined surface is provided on the butt end face of the blank. With this configuration, it is not necessary to attach a separate member having the second inclined surface to the butt end of the second rod. Therefore, the fishing rod can be made lighter, and the manufacturing process of the fishing rod can be simplified.

[0016] A fishing rod having a fifth aspect according to any one of the second to fourth aspects of the present invention further comprises a third rod body. The third rod body is provided radially inward of the second rod body. The first butt cap has a contact portion. The contact portion protrudes toward the rod tip side of the first inclined surface. When the third rod body is housed in the first rod body, the third butt portion of the third rod body abuts against the contact portion. With this configuration, when the third rod body is housed in the first rod body, the third butt portion abuts against the contact portion that protrudes toward the rod tip side of the first inclined surface, thus preventing the third butt portion from abutting the first inclined surface. Therefore, damage to the first inclined surface is prevented, and the phase shift correction function by the first inclined surface is maintained over a long period of time.

[0017] In a fishing rod according to the sixth aspect of the fifth aspect of the present invention, the third rod body is provided with a second butt cap at the third butt end. When the third rod body is housed in the first rod body, the second butt cap abuts against the contact portion. With this configuration, since the second butt cap abuts against the contact portion, the contact portion can be made smaller compared to a configuration in which the blank of the third rod body abuts against it. Therefore, the area of ​​the first inclined surface can be easily secured, and phase misalignment can be smoothly corrected by the first inclined surface.

[0018] In a fishing rod according to the seventh aspect of the present invention, which is a third aspect of the present invention, the first butt cap is detachably attached to the first rod body. The first butt cap comprises a butt cap body and an adjustment member. The adjustment member is provided separately from the butt cap body on the rod tip side of the butt cap body. The adjustment member has a first inclined surface. With this configuration, since the adjustment member and the butt cap body are configured separately from each other, the adjustment member can be made of a different material from the butt cap body. Furthermore, since the adjustment member is provided with a first inclined surface, the sliding properties of the first inclined surface can be easily improved by making the material of the adjustment member a smooth material. Therefore, phase misalignment can be smoothly corrected.

[0019] In the eighth aspect of the fishing rod according to the seventh aspect of the present invention, the butt cap body and the adjustment member are connected to each other and can be attached to and detached integrally from the first rod body. With this configuration, the butt cap body and the adjustment member can be attached and detached at the same time, making maintenance easy. In particular, dirt and other contaminants on the first inclined surface of the adjustment member can be easily removed, making it easier to maintain the first inclined surface in good condition.

[0020] In a fishing rod according to the ninth aspect of the eighth aspect of the present invention, the butt cap body is screwed onto the first rod body. The adjustment member is connected to the butt cap body so as to be rotatable relative to it. The first rod body further includes a positioning part. The positioning part determines the circumferential position of the adjustment member. With this configuration, since the adjustment member is rotatable relative to the butt cap body, even if the butt cap body is rotated when screwing it onto the first rod body, the adjustment member can not be prevented from rotating with it. Furthermore, since the positioning part is provided on the first rod body, the circumferential position of the adjustment member can always be kept at the same position. As a result, the first inclined surface of the adjustment member always maintains a constant orientation, and the circumferential phase of the second rod body can always be adjusted to a predetermined phase.

[0021] Furthermore, the fishing rod according to the present invention comprises a first rod body, a second rod body, and a phase adjustment unit. A reel seat is provided on the first rod body. A fishing line guide is provided on the second rod body. The second rod body can be switched between a shortened state and an extended state, and is held by the first rod body in each state. In the shortened state, the second rod body protrudes from the first rod body toward the rod tip by a first protrusion length. In the extended state, the second rod body protrudes from the first rod body toward the rod tip by a second protrusion length. The second protrusion length is longer than the first protrusion length. The phase adjustment unit is provided on the first butt end of the first rod body. The phase adjustment unit adjusts the circumferential phase of the second rod body relative to the first rod body in the shortened state.

[0022] According to this configuration, since the phase adjustment part is provided, when the second rod body is in the shortened state, the phase between the reel sheet of the first rod body and the fishing line guide of the second rod body is automatically adjusted. Therefore, when the angler switches the second rod body to the shortened state, there is no need to correct the phase shift between the reel sheet and the fishing line guide, and the angler can immediately concentrate on fishing after the switch to the shortened state. In addition, since it is not necessary to form a slit at the end of the first rod body on the tip side, it is possible to prevent a decrease in the strength of the fishing rod.

Advantages of the Invention

[0023] As described above, since the phase adjustment part is provided at the first rod butt of the first rod body, it is possible to prevent the circumferential phase shift between the first rod body and the second rod body in the shortened state, and it is also possible to easily ensure the strength of the first rod body.

Brief Description of the Drawings

[0024] [Figure 1] A longitudinal sectional view showing the main part of a fishing rod in an embodiment of the present invention and showing the shortened state of the second rod body. [Figure 2] A longitudinal sectional view showing the main part of the same fishing rod and showing the extended state of the second rod body. [Figure 3] A longitudinal sectional view showing the first rod butt of the first rod body of the same fishing rod and showing the state at an intermediate stage before the second rod body becomes the shortened state. [Figure 4] A longitudinal sectional view showing the same first rod butt and showing the state immediately before the second rod body becomes the shortened state. [Figure 5] A longitudinal sectional view showing the same first rod butt and showing the shortened state of the second rod body. [Figure 6] A longitudinal sectional view showing the same first rod butt and showing the state immediately before the third rod body becomes the stored state. [Figure 7] A longitudinal sectional view showing the same first rod butt and showing the stored state of the third rod body. [Figure 8] A longitudinal sectional view showing the same first rod butt and showing the stored state of each rod body of the fishing rod. [Figure 9] Showing the butt sleeve of the same fishing rod, (a) is a perspective view seen from the rod butt side, and (b) is a view seen axially from the rod butt side. [Figure 10] (a) and (b) are longitudinal cross-sectional views showing the assembly process of the tail sleeve. [Figure 11] (a) and (b) are perspective views showing the adjustment members of the fishing rod. [Figure 12] (a) and (b) are longitudinal cross-sectional views showing the assembly process of the butt cap of the fishing rod, and (c) is a front view of the butt cap. [Figure 13] (a) and (b) are front views showing the main parts of a fishing rod in another embodiment of the present invention. [Figure 14] (a) and (b) are front views showing the main parts of a fishing rod in another embodiment of the present invention. [Modes for carrying out the invention]

[0025] The following description of a fishing rod according to one embodiment of the present invention will be made with reference to Figures 1 to 12. The direction of the center line of the fishing rod (axial direction) will be defined as the front-to-back direction, with the tip of the rod being the front and the butt end being the rear. The circumferential direction of the fishing rod will simply be referred to as the circumferential direction.

[0026] The fishing rod comprises multiple rod sections. The fishing rod in this embodiment is of the telescopic type, but it may also be of the spigot joint type or the like. Furthermore, the fishing rod in this embodiment is used with a reel 100 attached, as shown in Figures 1 and 2, but it may also be a fixed rod without a reel 100. In addition, the fishing rod in this embodiment comprises a total of five rod sections, but the number of rod sections is arbitrary.

[0027] As shown in Figure 8, the fishing rod comprises, in order from the butt end, a first rod body 1, a second rod body 2, a third rod body 3, a fourth rod body 4, and a fifth rod body 5. The diameters increase sequentially from the first rod body 1 to the fifth rod body 5. Each rod body is rotatable relative to the others in the circumferential direction. Each rod body is hollow, however, for example, the fifth rod body 5 may be solid. Each rod body comprises a blank made of fiber-reinforced resin formed from prepreg. The first rod body 1 comprises a first blank 11, the second rod body 2 comprises a second blank 12, the third rod body 3 comprises a third blank 13, the fourth rod body 4 comprises a fourth blank 14, and the fifth rod body 5 comprises a fifth blank 15. In the stored state, the second rod body 2 is stored radially inside the first rod body 1, the third rod body 3 is stored radially inside the second rod body 2, the fourth rod body 4 is stored radially inside the third rod body 3, and the fifth rod body 5 is stored radially inside the fourth rod body 4.

[0028] The first rod section 1 is the rearmost section of the rod and is called the butt section. The first rod section 1 is provided with a reel seat 6. The reel seat 6 is mounted on the outer surface of the first blank 11. Various types of reels 100 can be attached to the reel seat 6, but in this embodiment, a spinning reel 100 is attached. The reel legs 101 of the reel 100 are attached to the reel seat 6. The reel seat 6 of this embodiment is suitable for attaching a spinning reel 100. The reel seat 6 has a reel mounting section 7 at a predetermined location on its entire circumference to which the reel 100 is attached. The reel legs 101 are attached to this reel mounting section 7. When fishing, the reel mounting section 7 is located below the first rod section 1, and the spinning reel 100 is located below the first rod section 1. Furthermore, the reel seat 6 may be suitable for mounting a double-bearing reel. In that case, when fishing, the reel mounting section 7 is located above the first rod body 1, and the double-bearing reel is located above the first rod body 1.

[0029] The second rod body 2 is a rod body connected to the front side of the first rod body 1 and is called the butt rod. The second rod body 2 is equipped with a fishing line guide 8. The fishing line guide 8 may be a fixed guide fixed to a predetermined position on the blank, or it may be a movable guide (free guide) that is provided so as to be movable in the circumferential and front-rear directions relative to the blank. In this embodiment, only one fishing line guide 8 is provided on the second rod body 2, but multiple guides may be provided. Fishing line guides 8 are also provided on the third rod body 3, the fourth rod body 4, and the fifth rod body 5. When fishing, each fishing line guide 8 is located at the same point as the reel 100 on the entire circumference in the circumferential direction, and in this embodiment, it is located on the lower side. The circumferential positions of each fishing line guide 8, the reel mounting portion 7 of the reel seat 6, and the reel 100 are aligned with each other. The third rod body 3 is connected to the front side of the second rod body 2, and the fourth rod body 4 is connected to the front side of the third rod body 3. The fifth rod section, 5, is the rod section located furthest forward and is called the tip section.

[0030] When fishing, the overall length of the fishing rod can be switched between a relatively long state and a relatively short state. A fishing rod with such a structure is called a zoom rod. This switching is performed between the first rod body 1 and the second rod body 2. That is, the second rod body 2 can switch between a shortened state in which it protrudes forward from the first rod body 1 by a first protrusion length L1, and an extended state in which it protrudes forward from the first rod body 1 by a second protrusion length L2 which is longer than the first protrusion length L1. The second rod body 2 is held by the first rod body 1 in each state. The shortened state is a state in which the overall length of the fishing rod is relatively short, and the extended state is a state in which the overall length of the fishing rod is relatively long. Figure 1 shows the shortened state, and Figure 2 shows the extended state. The angler can fish in either the shortened state or the extended state. A fishing line guide 8 is positioned on the portion of the overall length of the second rod body 2 that protrudes forward from the first rod body 1 in the shortened state. The fishing line guide 8 is located in front of the first rod body 1, whether in the shortened or extended state.

[0031] The second rod body 2 is held by the first rod body 1 in both the shortened and extended states. A fitting portion (not shown) is provided on the outer circumferential surface of the intermediate portion of the second rod body 2. The fitting portion is composed of a bulge on the outer circumferential surface that bulges locally radially outward. In the shortened state, the fitting portion of the second rod body 2 fits into the inner circumferential surface of the front end of the first rod body 1. In the extended state, the outer circumferential surface of the rear end of the second rod body 2 fits into the inner circumferential surface of the front end of the first rod body 1.

[0032] As shown in Figures 3 to 8, the first rod body 1 is equipped with a butt sleeve 20 and a first butt plug 21 at the first butt section 1a. The butt sleeve 20 is attached to the inner circumferential surface of the rear end of the first blank 11. The butt sleeve 20 is inserted from the rear end opening of the first blank 11 and is adhesively fixed to the inner circumferential surface of the first blank 11. The first butt plug 21 is screwed radially inward of the butt sleeve 20. The first butt plug 21 is removed from the rear end opening of the butt sleeve 20 toward the rear and attached toward the front from the rear end opening.

[0033] Figures 9 and 10 show the tail sleeve 20. The tail sleeve 20 comprises a sleeve body 30, a retaining member 31 attached to the sleeve body 30, and a tail cover 32 attached to the sleeve body 30. Figure 9 shows the sleeve body 30 in a standalone state. The sleeve body 30 is made of a hard synthetic resin or metal. The tail sleeve 20 is cylindrical with openings at both ends. The size and cross-sectional shape of the outer circumferential surface of the tail sleeve 20 correspond to the inner circumferential surface of the rear end of the first blank 11. In this embodiment, since the cross-sectional shape of the rear end of the first blank 11 is non-circular, the cross-sectional shape of the outer circumferential surface of the tail sleeve 20 is also non-circular to match. The rear part of the outer circumferential surface of the sleeve body 30 is bonded to the inner circumferential surface of the first blank 11.

[0034] A radially penetrating window 33 is formed on the front of the outer circumferential surface of the sleeve body 30. Multiple windows 33 are provided at intervals in the circumferential direction, and in this embodiment, a total of four windows 33 are provided. A tail cover 32 is fitted onto the rear end of the outer circumferential surface of the sleeve body 30. The tail cover 32 is cylindrical. The tail cover 32 constitutes the rear end of the tail sleeve 20. The tail cover 32 is softer than the sleeve body 30 and is preferably made of various types of rubber. As shown in Figure 3, when the tail sleeve 20 is fitted onto the first blank 11, the sleeve body 30 is located radially inward of the first blank 11, but the tail cover 32 protrudes rearward from the rear end of the first blank 11.

[0035] The inner circumferential surface of the sleeve body 30 has a circular cross-sectional shape. A female threaded portion 34 is formed on the inner circumferential surface of the rear end of the sleeve body 30, and the first butt cap 21 is screwed into the female threaded portion 34. A positioning groove 35 (positioning portion) is also formed on the inner circumferential surface of the rear end of the sleeve body 30. The positioning groove 35 extends along the front-rear direction and is formed over a predetermined length from the rear end opening of the sleeve body 30 toward the front. The positioning groove 35 traverses the female threaded portion 34 in the front-rear direction and extends beyond the female threaded portion 34 toward the front. The positioning groove 35 may be provided at only one location around the entire circumference, but preferably it is provided at multiple locations spaced apart in the circumferential direction. In this embodiment, a total of three locations are provided at 90-degree intervals, and in detail, they are provided on the upper part and on both the left and right sides.

[0036] The retaining member 31 holds the second butt section 2a of the second rod body 2 in the shortened state. More specifically, the retaining member 31 holds the outer circumferential surface of the second blank 12. The retaining member 31 is cylindrical. The retaining member 31 is softer than the sleeve body 30 and is specifically made of various types of rubber such as silicone rubber, nitrile rubber, and chloroprene rubber. The cross-sectional shape of the retaining member 31 corresponds to the cross-sectional shape of the rear grip section 11. The retaining member 31 has a plurality of retaining protrusions 36 for holding the outer circumferential surface of the second blank 12. The retaining protrusions 36 are provided on the inner circumferential surface of the retaining member 31 and protrude radially inward. Multiple retaining protrusions 36 are provided at intervals in the circumferential direction, and the number is arbitrary, but in this embodiment, they are provided in four locations.

[0037] As shown in Figure 10, the retaining member 31 is fitted onto the front of the sleeve body 30. The retaining projection 36 of the retaining member 31 fits into the window 33 of the sleeve body 30 and protrudes radially inward from the inner circumferential surface of the sleeve body 30. The tip surface (radially inward end surface) of the retaining projection 36 abuts against the outer circumferential surface of the second blank 12 and presses the second blank 12 radially inward. As a result, the second rod butt section 2a is held, and the second rod body 2 is held in a shortened state.

[0038] Figure 12(c) shows the external appearance of the first butt cap 21, and Figure 12(b) shows a cross-sectional view of the first butt cap 21. The first butt cap 21 comprises a first butt cap body 40 and an adjustment member 41. Figure 12(a) shows an exploded view of the first butt cap 21. The adjustment member 41 is located on the front side of the first butt cap body 40, and the adjustment member 41 and the first butt cap body 40 are connected to each other in the front-rear direction. The adjustment member 41 and the first butt cap body 40 are rotatable relative to each other along the circumferential direction. An annular front hook portion 42 is provided at the front end of the first butt cap body 40, and an annular rear hook portion 43 is provided at the rear end of the adjustment member 41. The first butt cap body 40 is connected to the adjustment member 41 so as to be rotatable relative to each other by the engagement of the front hook portion 42 with the rear hook portion 43.

[0039] The first butt cap body 40 is cylindrical and has an axis in the front-rear direction. A through hole 44 is formed in the center of the first butt cap body 40, penetrating in the front-rear direction. A male threaded portion 45 is formed on the outer circumferential surface of the first butt cap body 40. The male threaded portion 45 is screwed into the female threaded portion 34 of the butt sleeve 20.

[0040] Figure 11 shows the adjustment member 41 in its standalone state. The adjustment member 41 is cylindrical in shape as a whole and has an axis in the front-rear direction. A front through hole 46 is formed in the center of the adjustment member 41, penetrating in the front-rear direction. The adjustment member 41 is divided into three parts in the front-rear direction. That is, the adjustment member 41 has a main body portion 47, a contact portion 48 that protrudes forward from the front end surface of the main body portion 47, and a rear hook portion 43 that protrudes rearward from the rear end surface of the main body portion 47.

[0041] A phase adjustment section 50 is provided at the first butt section 1a of the first rod body 1 to correct the circumferential phase misalignment of the second rod body 2 with respect to the first rod body 1 when it is shortened. The phase adjustment section 50 is located radially inward of the first butt section 1a. Specifically, the phase adjustment section 50 is provided on the first butt cap 21, and more specifically, on the adjustment member 41. The phase adjustment section 50 has a first inclined surface 51. The first inclined surface 51 is provided on the front end surface of the main body 47 of the adjustment member 41. The first inclined surface 51 is inclined at a predetermined angle with respect to the front-rear direction. When the reel mounting section 7 is on the lower side, the first inclined surface 51 is an inclined surface in which the upper end of the first inclined surface 51 is behind the lower end. The upper end of the first inclined surface 51 is located on the opposite side in the circumferential direction from the reel mounting section 7, and the lower end of the first inclined surface 51 is located at the same point in the circumferential direction from the reel mounting section 7. The first inclined surface 51 is formed over the entire front end surface of the main body portion 47. In other words, the first inclined surface 51 is provided over the entire peripheral portion of the front end surface of the adjustment member 41, excluding the central portion. The first inclined surface 51 is formed in an annular shape around the contact portion 48.

[0042] The contact portion 48 protrudes forward from the center of the front end surface of the main body portion 47. Therefore, the contact portion 48 protrudes forward of the first inclined surface 51. The contact portion 48 is cylindrical with an axis in the front-rear direction, and the aforementioned front through hole 46 is provided in its center. The front through hole 46 and the rear through hole 44 are arranged in a straight line with respect to each other, and these two through holes form a first vent hole 49 that penetrates the first butt cap 21 in the front-rear direction. Air and water inside the fishing rod can be discharged to the outside through this first vent hole 49. In other words, the first vent hole 49 can be used as an exhaust hole or drain hole.

[0043] A first buffer 53 is attached to the tip of the contact portion 48. The adjustment member 41 is a single unit except for the first buffer 53. That is, the adjustment member 41 consists of an adjustment body 54 and a first buffer 53 which is separate from the adjustment body 54. The material of the adjustment body 54 is preferably a hard synthetic resin, particularly a synthetic resin such as POM with excellent sliding properties, and more preferably Delrin. The material of the first buffer 53 is preferably softer than the material of the adjustment body 54, and is made of various types of rubber, for example. A sliding layer with excellent sliding properties may be provided on the first inclined surface 51.

[0044] A positioning projection 55 (positioning portion) is formed on the outer circumferential surface of the main body portion 47. The positioning projection 55 protrudes radially outward. The positioning projection 55 is provided in correspondence with the positioning groove 35 of the tail sleeve 20 and engages with the positioning groove 35. As described above, the positioning groove 35 is arranged in a total of three locations at 90-degree intervals in the circumferential direction, so the positioning projection 55 is also arranged in a total of three locations at 90-degree intervals in the circumferential direction accordingly. The positioning projection 55 may have an elongated shape along the front-to-back direction.

[0045] As shown in Figure 3, the tail sleeve 20 is inserted into the inner circumferential surface of the rear end of the first blank 11 and is adhesively fixed to the inner circumferential surface of the rear end of the first blank 11. As the tail sleeve 20 is inserted into the first blank 11, the tail cover 32 comes into contact with the rear end surface of the first blank 11. This prevents further insertion of the tail sleeve 20. The first tail plug 21 is screwed into the radially inward side of the tail sleeve 20. The adjustment member 41 and the first tail plug body 40 are inserted into the tail sleeve 20 while connected to each other. When the first tail plug 21 is inserted into the tail sleeve 20, the positioning projection 55 of the adjustment member 41 engages with the positioning groove 35 of the tail sleeve 20. This determines the circumferential position of the adjustment member 41. Furthermore, the first butt cap body 40 is rotated to screw the male threaded portion 45 of the first butt cap body 40 into the female threaded portion 34 of the butt sleeve 20. However, since the adjustment member 41 is connected to the first butt cap body 40 so as to be rotatable relative to it, the adjustment member 41 does not rotate even when the first butt cap body 40 is rotated. Since the adjustment member 41 is mounted radially inward of the first rod body 1, the first inclined surface 51 cannot be seen from the outside. However, the positioning projection 55 and the positioning groove 35 ensure that the circumferential orientation of the adjustment member 41 is always constant. Therefore, even if the first inclined surface 51 cannot be seen from the outside, the circumferential orientation of the first inclined surface 51 with respect to the reel mounting portion 7 of the reel seat 6 can always be set to a predetermined orientation.

[0046] A second inclined surface 52 is provided on the second butt portion 2a of the second rod body 2. The second inclined surface 52, together with the first inclined surface 51 described above, constitutes the phase adjustment portion 50. The second butt portion 2a of the second rod body 2 is open. Therefore, the second butt portion 2a is an open end. The rear end surface of the second rod body 2 is formed by the rear end surface of the second blank 12. The second inclined surface 52 is provided on the rear end surface of the second blank 12. The second inclined surface 52 is provided on the entire rear end surface of the second blank 12. The second inclined surface 52 is an inclined surface that is inclined at a predetermined angle with respect to the front-rear direction. The second inclined surface 52 is parallel to the first inclined surface 51. Therefore, the inclination angles of the first inclined surface 51 and the second inclined surface 52 with respect to the front-rear direction are equal to each other. The second inclined surface 52 faces the first inclined surface 51. The inclination angles of the first inclined surface 51 and the second inclined surface 52 with respect to the front-rear direction are, for example, 30 to 60 degrees.

[0047] As shown in Figures 6 to 8, a second butt cap 60 is provided on the third butt portion 3a of the third rod body 3. The second butt cap 60 is bonded to the inner circumferential surface of the third blank 13. A second hole 61 is provided in the center of the second butt cap 60, penetrating in the front-rear direction. Preferably, the rear end of the second butt cap 60 protrudes a predetermined length behind the rear end surface of the third blank 13. Furthermore, preferably, a reduced-diameter portion 64 is provided at the rear end of the second butt cap 60, which has a shape that narrows towards the rear. The reduced-diameter portion 64 is particularly preferably trapezoidal in shape. As shown in Figure 7, when the third rod body 3 is stored in the first rod body 1, the second butt cap 60 comes into contact with the contact portion 48. As described above, a first buffer 53 is attached to the tip (front end) of the contact portion 48, so the second butt cap 60 comes into contact with the first buffer 53. Therefore, the impact when the third rod body 3 is stored forcefully is mitigated. Furthermore, since the contact portion 48 protrudes forward of the first inclined surface 51, the second butt cap 60 is prevented from coming into contact with the first inclined surface 51, thereby preventing damage to the first inclined surface 51. In addition, since a reduced diameter portion 64 is provided at the rear end of the second butt cap 60, even if the rear end of the second butt cap 60 protrudes rearward from the third blank 13, contact between the second butt cap 60 and the first inclined surface 51 is prevented.

[0048] The second butt cap 60 comprises a second butt cap body 62 and a second buffer 63. The second butt cap body 62 and the second buffer 63 are connected to each other front to back. The second buffer 63 is located on the front side of the second butt cap body 62. The second butt cap body 62 abuts against the first buffer 53 when stored. The rear end of the second butt cap body 62 protrudes rearward from the third blank 13. The entire second buffer 63 is located radially inward of the third blank 13. As shown in Figure 8, when the fourth rod body 4 is stored in the third rod body 3, the fourth butt portion 4a of the fourth rod body 4 abuts against the second buffer 63. The fourth butt portion 4a is made up of the fourth blank 14. The fourth blank 14 abuts against the second buffer 63. The second buffer 63 prevents damage to the fourth blank 14. Furthermore, when the fifth rod section 5 is stored in the fourth rod section 4, the fifth butt section 5a of the fifth rod section 5 does not come into contact with the second buffer 63, but is positioned in front of the second buffer 63. However, the fifth butt section 5a may come into contact with the second buffer 63. The fifth butt section 5a is made up of the fifth blank 15.

[0049] Next, we will explain how to operate the fishing rod when fishing. When fishing, the third rod section 3 through the fifth rod section 5 are pulled forward sequentially from the first rod section 1. The order of pulling them out is the fifth rod section 5, the fourth rod section 4, and the third rod section 3. The second rod section 2 can be used in a shortened state as shown in Figure 1, or in an extended state as shown in Figure 2. In the shortened state shown in Figure 1, the fishing rod can be used in a relatively short state, and in the extended state shown in Figure 2, the fishing rod can be used in a relatively long state.

[0050] When switching from the extended state to the shortened state, the front of the second rod body 2 is grasped and pushed to the rear, causing the second rod body 2 to enter the radially inward direction of the first rod body 1. As the second rod body 2 is pushed radially inward of the first rod body 1, the second butt portion 2a of the second rod body 2 approaches the butt sleeve 20, as shown in Figure 3. Then, as shown in Figure 4, the second butt portion 2a enters the radially inward direction of the holding member 31 of the butt sleeve 20, causing the second butt portion 2a to slide against the holding member 31. As a result, the second butt portion 2a slowly moves to the rear.

[0051] As the second rod body 2 is pushed further backward, the second inclined surface 52 comes into contact with the first inclined surface 51. If, at this time, the second inclined surface 52 is not parallel to the first inclined surface 51 but is misaligned in the circumferential direction, the second inclined surface 52 will slide along the first inclined surface 51, and the second rod body 2 will rotate circumferentially relative to the first rod body 1. In other words, the circumferential phase misalignment of the second rod body 2 with respect to the first rod body 1 is automatically corrected, and finally, as shown in Figure 5, the second inclined surface 52 becomes parallel to the first inclined surface 51 and makes surface contact with the first inclined surface 51.

[0052] When switching from the extended state to the shortened state, if a circumferential phase misalignment occurs between the first rod body 1 and the second rod body 2, this phase misalignment is automatically corrected by the phase adjustment unit 50. Therefore, anglers can simply push the second rod body 2 into the first rod body 1 to shorten it without worrying about the circumferential orientation of the second rod body 2 relative to the first rod body 1, making the switching operation to the shortened state easy and allowing anglers to start fishing immediately after switching to the shortened state. Furthermore, the phase adjustment unit 50 is located radially inside the butt end portion 1a of the first rod and is not exposed to the outside. Therefore, line entanglement problems caused by the phase adjustment unit 50 do not occur, and a good appearance can be maintained. In addition, since there is no need to provide a slit at the front end of the first blank 11, the strength of the first rod body 1 can be easily ensured.

[0053] The phase adjustment unit 50 has a first inclined surface 51 and a second inclined surface 52, and corrects the phase misalignment by rotating the second rod body 2 in the circumferential direction using the slip between the first inclined surface 51 and the second inclined surface 52. Therefore, the phase misalignment can be easily adjusted with a simple structure. As the second rod body 2 rotates in the circumferential direction until the first inclined surface 51 and the second inclined surface 52 are parallel to each other, the circumferential orientation of the second rod body 2 remains constant in the shortened state. Therefore, the circumferential positional relationship between the reel mounting portion 7 of the reel seat 6 and the fishing line guide 8 can always be kept in a unified state.

[0054] Furthermore, the second rod butt section 2a does not have a first butt cap 21, and the rear end surface of the second blank 12 is open, with a second inclined surface 52 formed on the rear end surface of the second blank 12. Therefore, when the second inclined surface 52 comes into contact with the first inclined surface 51, the contact portion 48 can easily enter radially inward of the second blank 12. Consequently, when the third rod body 3 is housed in the second rod body 2, the second butt cap 60 can easily come into contact with the contact portion 48.

[0055] Furthermore, as shown in Figure 13, the first butt cap 21 does not necessarily have a contact portion 48 that protrudes forward from the first inclined surface 51. That is, the first inclined surface 51 may be provided over the entire front end surface of the first butt cap 21. In addition, a connecting member 70 separate from the second blank 12 may be provided on the second butt portion 2a. The connecting member 70 may be detachably screwed to the inner circumferential surface of the second blank 12, or it may be adhesively fixed to the inner circumferential surface of the second blank 12. A second inclined surface 52 is provided on the rear end surface of the connecting member 70. The connecting member 70 is preferably made of a material with excellent sliding properties, similar to the adjustment member 41. In addition, a sliding layer with excellent sliding properties may be formed on the second inclined surface 52.

[0056] Furthermore, as shown in Figure 14, a mountain-shaped portion 80 may be provided at the front end of the first butt cap 21, and a valley-shaped portion 81 may be provided at the rear end of the joint member 70. The mountain-shaped portion 80 is provided with a pair of first inclined surfaces 51, and the valley-shaped portion 81 is provided with a pair of second inclined surfaces 52. Even if the phase of the second rod body 2 is shifted circumferentially with respect to the first rod body 1 in the shortened state, the phase shift is automatically corrected as the mountain-shaped portion 80 and the valley-shaped portion 81 engage with each other in the front-rear direction, and the pair of second inclined surfaces 52 face the pair of first inclined surfaces 51, respectively. [Explanation of Symbols]

[0057] 1. First rod body 1a 1st rod butt 2. Second rod 2a 2nd rod butt 3. Third rod 3a 3rd rod butt 4. Fourth rod 4a 4th rod butt 5. Fifth rod 5a 5th rod butt 6 reel seats 7. Reel mounting section 8 Fishing line guides 11 First Blank 12 Second Blank 13 Third Blank 14. Fourth Blank 15. 5th Blank 20 Butt Sleeves 21 First butt plug 30 sleeves 31 Retaining member 32 Butt cover 33 windows 34 Female thread section 35 Positioning groove (positioning part) 36 Retaining protrusion 40. First butt cap body 41 Adjustment Member 42 Front hook section 43 Rear hook section 44 Rear through hole 45 Male screw part 46 Front through hole 47 Main body 48 Contact part 49 First extraction hole 50 Phase adjustment section 51 1st slope 52 Second slope 53 First buffer 54 Adjustment Body 55 Positioning protrusion (positioning part) 60 Second butt plug 61 Second hole 62. Second butt cap body 63 Second buffer 64 Reduced diameter part 70 Jointing member 80 Mountain part 81 Valley-like section 100 reels 101 Reel Legs L1 First projection length L2 Second projection length

Claims

1. The first rod body and, The second rod is switchable between a shortened state in which it protrudes from the first rod body toward the rod tip by a first protrusion length and an extended state in which it protrudes from the first rod body toward the rod tip by a second protrusion length longer than the first protrusion length, and in each state the second rod body is held by the first rod body. A phase adjustment unit is provided at the first butt section of the first rod body to adjust the circumferential phase of the second rod body relative to the first rod body in the shortened state, A fishing rod equipped with a rod.

2. The phase adjustment unit is, A first inclined surface is provided on the radially inward side of the first butt section of the fishing rod, and is inclined with respect to the axial direction of the fishing rod, The fishing rod according to claim 1, further comprising: a second inclined surface provided parallel to the first inclined surface at the second butt section of the second rod body, and which contacts the first inclined surface in the shortened state.

3. The first rod body is equipped with a first butt cap at the first butt section, The fishing rod according to claim 2, wherein the first inclined surface is provided on the tip end face of the first butt cap.

4. The second rod body comprises a blank made of fiber-reinforced resin, The fishing rod according to claim 2 or 3, wherein the second inclined surface is provided on the butt end face of the blank.

5. The device further comprises a third rod body provided radially inward of the second rod body, The fishing rod according to claim 2 or 3, wherein the first butt cap protrudes toward the rod tip side of the first inclined surface and has a contact portion against which the third butt portion of the third rod body abuts when the third rod body is housed in the first rod body.

6. The third rod body is provided with a second butt cap at the third butt section, The fishing rod according to claim 5, wherein the second butt cap abuts against the contact portion when the third rod body is housed in the first rod body.

7. The first butt cap is detachably attached to the first rod body, The fishing rod according to claim 3, wherein the first butt cap comprises a butt cap body and an adjustment member provided separately from the butt cap body on the rod tip side of the butt cap body and having a first inclined surface.

8. The fishing rod according to claim 7, wherein the butt cap body and the adjustment member are connected to each other and can be integrally attached to and detached from the first rod body.

9. The butt cap body is screwed onto the first rod body, The adjustment member is connected to the butt cap body so as to be rotatable relative to it, The fishing rod according to claim 8, wherein the first rod body further comprises a positioning portion for determining the circumferential position of the adjustment member.

10. The first rod body is equipped with a reel seat, A fishing line guide is provided, and the second rod body is switchable between a shortened state in which it protrudes from the first rod body toward the rod tip by a first protrusion length and an extended state in which it protrudes from the first rod body toward the rod tip by a second protrusion length longer than the first protrusion length, and in each state the second rod body is held by the first rod body, A phase adjustment unit is provided at the first butt section of the first rod body to adjust the circumferential phase of the second rod body relative to the first rod body in the shortened state, A fishing rod equipped with a rod.

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