JP4369896B2 - fishing rod - Google Patents

Description

  The present invention relates to a swing-out type fishing rod in which a plurality of rods having different outer diameters are connected so as to be extendable and retracted, and more particularly to a structure for holding an upper rod tube inside a main rod so that it can be pulled out.

  The swing-out type fishing rod has a plurality of rods that are stretchably connected. In this type of fishing rod, the outer diameter of the main rod located on the hand side is the largest, and the outer diameter of the rod is gradually reduced from this main rod to the tip side.

  Therefore, the fishing rod can be extended by sequentially pulling out the rod from the tip side of the fishing rod. On the contrary, the full length of the fishing rod can be shortened by sequentially storing the tip side side of the rod side on the inside of the proximal side of the rod side.

  By the way, in the conventional swing-type fishing rod, the rear end portion of the proximal side of the main rod tube is closed by the former lower plug, and the rear end portion of the former upper rod tube following the main rod tube is blocked by the middle and lower plugs. It is blocked. The main lower plug is for preventing the former upper pipe from falling out of the former main pipe when the upper upper pipe is accommodated inside the former main pipe. ing. Similarly, the middle and lower plugs are for preventing the fistula from falling out of the upper fistula when the fistula on the tip side is accommodated inside the former fistula. Screwed into the rear end of the tube.

  The former lower plug is detachably fitted to the middle and lower stopper when the former upper pipe is accommodated inside the original lower pipe. By this fitting, rattling of the former soot tube is prevented and the upper soot tube is held at a fixed position inside the former soot tube.

  More specifically, the former lower plug of the main rod has a fitting protrusion that projects coaxially into the main rod. Furthermore, the middle and lower plugs of the former soot tube have a plurality of flexible pieces that can be elastically deformed in the radial direction of the former soot tube. The flexible pieces are arranged at intervals in the circumferential direction of the former upper tube and project toward the fitting projection of the former lower stopper. These flexible pieces cooperate with each other to form an insertion space in which the fitting protrusion can be fitted. The inner diameter on the distal end side of this insertion space is smaller than the outer diameter of the fitting protrusion.

  Therefore, when the upper main tube is accommodated inside the main tube, the fitting protrusion fits into the insertion space while being elastically deformed so as to push open the flexible piece, and the contact between the fitting protrusion and the flexible piece. Friction resistance occurs in the part. As a result, the former lower plug and the middle lower stopper are coupled to each other, and the position of the former upper pipe with respect to the original lower pipe is fixed (see, for example, Patent Document 1).

Furthermore, as another example, a fishing rod is known which is composed of a fixing portion for fixing the middle and lower plugs to the upper rod tube and a rotating body rotatably supported by the fixing portion. When the upper soot tube is accommodated inside the main soot tube, the rotating body is hooked on the locking portion adhered to the former lower cap so that the former lower plug and the middle lower plug are coupled to each other. (For example, refer to Patent Document 2).
JP 2004-180601 A JP 11-318280 A

  In a swing-type fishing rod that can be adjusted in length, for example, when extending the fishing rod, pull the upper rod from the main rod while rotating the upper rod and the main rod relatively in the circumferential direction. There are many.

  According to the fishing rod disclosed in Patent Document 1, in the state where the upper rod is accommodated inside the main rod, the fitting protrusion of the lower plug is fitted between the flexible pieces of the middle and lower plugs. Yes. For this reason, it is inevitable that the torque for rotating the former upper tube is transmitted to the former lower plug through the fitting portion between the middle lower plug and the former lower plug.

  Then, in the conventional fishing rod, the main lower plug is screwed into the main rod pipe in consideration of maintenance, and even the middle and lower plugs are screwed into the upper upper rod pipe. Therefore, the torque transmitted from the former upper tube may cause the original lower plug and middle lower plug to be rotated together with the former upper tube, resulting in problems such as loosening or dropping off the original lower plug and middle lower plug. .

  In particular, if the original lower plug is removed from the main tube, the upper upper tube and the upper tube located in the main tube will fall out of the main tube, and this will require a lot of work to repair. And labor.

  On the other hand, according to the fishing rod disclosed in Patent Document 2, the rotating body caught on the locking portion of the former lower plug can freely rotate independently of the fixed portion. Even if it rotates, torque will not be applied to the fixed part fixed to the former soot tube.

  However, the fixing portion of the middle and lower plug has a ring-shaped flange portion that covers the rear end edge of the former upper soot tube, and this ring portion serves as a locking portion when the former upper soot tube is accommodated in the former soot tube. It hits the tip. For this reason, for example, when the upper upper tube is rotated, torque is transmitted from the upper upper tube to the contact portion between the fixing portion and the locking portion of the middle and lower plugs, and the original lower tube is rotated together with the upper upper tube. There is a risk.

  Therefore, even the fishing rod disclosed in Patent Document 2 cannot reliably prevent the original lower plug and the middle lower plug from loosening, and there is still room for improvement in this respect.

  An object of the present invention is to provide an original lower plug and an intermediate lower plug even when the main and upper upper pipes are relatively rotated in the circumferential direction in a state where the upper and lower pipes are accommodated inside the main and lower pipes. The object is to obtain a fishing rod that can prevent the ball from loosening or falling off.

In order to achieve the above object, a fishing rod according to one aspect of the present invention includes:
A main soot pipe, an upper soot pipe accommodated in the inside of the main soot pipe so as to be drawable, and a first end located on the inner side of the main soot pipe, provided at a rear end portion of the hand side of the main soot pipe A former lower plug having a fitting portion of the lower middle portion, and a middle lower portion having a second fitting portion provided at a rear end portion of the former upper tubular portion on the side of the former tubular portion and facing the first fitting portion A stopper, and
When the upper soot pipe is accommodated inside the main steel pipe, the original fitting pipe and the second fitting part are fitted to each other to fit the original inside the main steel pipe. A fishing rod designed to hold a rod
Any one of the first fitting portion and the second fitting portion can be elastically deformed when fitted to the other fitting portion, and the first fitting portion can be elastically deformed. It is characterized in that there is a play that allows relative rotation at the fitting portion between the joint portion and the second fitting portion.

Furthermore, in order to achieve the above object, a fishing rod according to another embodiment of the present invention includes:
An original soot pipe, an upper soot pipe accommodated in the inside of the main soot pipe so as to be drawable, a former lower plug for closing the rear end portion of the hand side of the main soot pipe, and the above-mentioned A middle and lower stopper that closes the rear end of the main tube side,
When the former soot pipe is accommodated inside the main soot pipe, the former soot pipe is held inside the main soot pipe by fitting the former lower stopper and the middle and lower stoppers to each other. A fishing rod
A bearing that allows relative rotation of the original lower plug and the middle lower plug is interposed in a fitting portion between the original lower plug and the middle lower plug , and this bearing is an outer ring fixed to the original lower plug. And an inner ring rotatably supported through a plurality of rolling elements inside the outer ring, and the middle and lower plugs are arranged as described above when the upper upper hose pipe is accommodated inside the former hail pipe. It has the projection part which fits in the inside of an inner ring so that removal is possible, It is characterized by the above-mentioned.

  According to the present invention, in the state in which the former soot pipe is accommodated inside the former soot pipe, even if the main soot pipe and the former soot pipe rotate relatively, the former lower plug and the middle lower part which are in the fitted state The stoppers idle with each other. Therefore, it is difficult for torque to be transmitted from the former upper pipe to the original lower stopper, and it is difficult to transmit torque from the former upper pipe to the middle lower stopper. Therefore, it is possible to reliably prevent the original lower plug and the middle lower plug from loosening or falling off.

  Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 discloses a swing-out type fishing rod 1 whose length can be adjusted. The fishing rod 1 according to the present embodiment includes a main rod tube 2, an upper rod tube 3, a middle rod tube 4, and a tip rod tube 5. The main rod tube 2, the former upper tube 3, the middle rod tube 4, and the tip rod tube 5 are formed in a hollow cylindrical shape using, for example, a fiber reinforced prepreg in which a reinforced fiber is impregnated with a synthetic resin. In addition, the number of the middle tube 4 is not limited to one, and a plurality of the middle tubes 4 may be provided.

  The rods 2 to 5 of the fishing rod 1 are stretchably connected to each other, and the outer diameter gradually increases from the main rod 2 located on the hand side of the fishing rod 1 to the tip rod 5 located on the tip side. It is getting smaller. Therefore, the former upper tube 3, the middle rod tube 4, and the tip rod tube 5 can be accommodated coaxially inside the main rod tube 2.

  FIGS. 2 to 4 disclose the positional relationship between the main soot tube 2 and the former top soot tube 3 that are connected to each other in a stretchable manner. The main rod 2 has a rear end 2a located on the proximal side and a front end 2b located on the opposite side of the rear end 2a. A former lower plug 6 is removably screwed into the rear end 2a of the former soot tube 2. The former lower plug 6 covers and protects the edge of the rear end portion 2a of the former main pipe 2 and when the upper upper pipe 3 is accommodated inside the former main pipe 2, the former upper pipe 3 becomes the former main pipe. 2 for preventing the rear end 2a from slipping out.

  The original lower stopper 6 is made of a metal material such as aluminum, brass, titanium, stainless steel, or a hard resin material. The original lower plug 6 includes a disk-shaped main body 7 and a cylindrical male screw portion 8. The main body 7 has an outer diameter equivalent to that of the rear end 2a of the main rod 2 and closes the rear end 2a. The male screw portion 8 protrudes coaxially from the main body 7 so as to enter the inside of the rear end portion 2a of the main rod tube 2. The male screw portion 8 is screwed into a female screw portion 9 formed on the inner surface of the rear end portion 2a of the main rod tube 2. By this screwing, the former lower stopper 6 is coaxially held at the rear end portion 2a of the former soot pipe 2.

  The former upper soot tube 3 has a rear end portion 3a that enters the inner side of the former soot tube 2, and a front end portion 3b that is located on the opposite side of the rear end portion 3a. The outer diameter of the rear end 3 a of the upper upper tube 3 is larger than the inner diameter of the distal end portion 2 b of the original upper tube 2. Therefore, in a state in which the upper upper tube 3 is pulled out from the upper main tube 2 to the maximum extent, the outer peripheral surface of the rear end portion 3 a of the upper upper tube 3 is pressed against the inner peripheral surface of the distal end portion 2 b of the upper main tube 2. . As a result, the former soot tube 2 and the former soot tube 3 are fixed in the most extended state.

  As shown in FIG. 3, the middle / lower plug 11 is removably screwed into the rear end portion 3 a of the former upper tub tube 3. The middle / lower stopper 11 is made of, for example, a resin material such as polyacetal resin, ABS resin, or nylon.

  The middle / lower plug 11 includes a main body 12 and a cylindrical male screw portion 13. The main body 12 has an outer wall 14 and a bottom wall 15. The outer wall 14 has a cylindrical shape having an outer diameter equivalent to that of the former soot tube 3, and projects coaxially from the rear end portion 3 a of the former soot tube 3 toward the former soot tube 2. The bottom wall 15 continues to one end of the outer wall 14 and closes the rear end portion 3a of the former upper tube 3.

  The male screw portion 13 protrudes coaxially from the bottom wall 15 so as to enter the inside of the rear end portion 3a of the former upper tube 3. The male threaded portion 13 is screwed into a female threaded portion 16 formed on the inner surface of the rear end portion 3a of the former upper tube 3. By this screwing, the middle / lower plug 11 is coaxially held at the rear end portion 3 a of the former upper tub tube 3.

  Further, a disc-shaped buffer member 17 is bonded to the tip of the male screw portion 13. The buffer member 17 is made of, for example, rubber or a flexible resin material, and is exposed on the inner side of the rear end portion 3 a of the former upper tube 3. The buffer member 17 is for elastically receiving the middle rod tube 4 and the tip rod tube 5 when the tip side intermediate rod tube 4 and the tip rod tube 5 are accommodated inside the original rod tube 3.

  Due to the presence of the buffer member 17, it is possible to avoid the middle tub tube 4 and the tip tub tube 5 from directly striking the middle lower plug 11. Therefore, generation of unpleasant impact sound can be prevented. At the same time, it is difficult for the impact to be transmitted to the meshing portion of the male screw portion 13 and the female screw portion 16, and damage to the male screw portion 13 and the female screw portion 16 can be prevented.

  By the way, the former lower plug 6 of the main rod tube 2 and the middle lower plug 11 of the former upper tube 3 are fitted to each other when the former upper tube 3 is housed inside the main rod tube 2. Thus, the original upper tube 3 is held at a fixed position inside the original tube 2. This structure will be specifically described with reference to FIGS.

  As shown in FIG. 3, the main body 7 of the original lower plug 6 has a first fitting portion 18. The first fitting portion 18 includes a protruding portion 19. The protruding portion 19 is formed integrally with the main body 7 and protrudes coaxially from the center of the main body 7 toward the inside of the rear end portion 2 a of the main casing 2. Therefore, the protrusion 19 is located on the axis O1 passing through the center of the main tube 2.

  The protrusion 19 has a base end 19a continuous with the main body 7, a tip 19b located on the opposite side of the base end 19a, and an intermediate portion 19c located between the base 19a and the tip 19b. In the present embodiment, the proximal end 19a and the distal end 19b have an outer diameter smaller than that of the intermediate portion 19c, and the distal end 19b has a spherical shape. For this reason, the protrusion 19 is formed in a tapered shape as it proceeds in the direction from the intermediate portion 19c to the base end 19a and from the intermediate portion 19c to the front end 19b, and has a spindle-shaped appearance as a whole. Therefore, the maximum outer diameter D1 of the protrusion 19 is determined by the intermediate portion 19c.

  As shown in FIGS. 6 and 7, the main body 12 of the middle / lower plug 11 has a hollow cylindrical second fitting portion 20. The second fitting portion 20 is formed integrally with the bottom wall 15 of the main body 12 and faces the first fitting portion 18. The second fitting portion 20 protrudes coaxially from the bottom wall 15 toward the original lower plug 6 and is surrounded by the outer wall 14.

  Four slits 21 are formed in the second fitting portion 20. The slits 21 are cut in the axial direction from the edge of the distal end opening of the second fitting portion 20 and are arranged at intervals in the circumferential direction of the second fitting portion 20. The slit 21 divides the second fitting portion 20 into four fitting pieces 22. The fitting pieces 22 are arranged at intervals in the circumferential direction of the original upper tube 3 and can be individually elastically deformed in the radial direction of the upper tube 3.

  The four fitting pieces 22 define a recess 23 into which the protruding portion 19 of the original lower plug 6 is detachably inserted inside the second fitting portion 20. The recessed part 23 is located on the axis line O2 passing through the center of the former upper tube 3. The bottom of the recess 23 is formed by the bottom wall 15 of the main body 12 and has a spherical surface corresponding to the tip 19 b of the protrusion 19.

  The peripheral surface of the recess 23 is formed by the fitting piece 22. These fitting pieces 22 have a tip edge located on the opposite side of the bottom wall 15. The leading edge of the fitting piece 22 forms an opening 24 that cooperates with each other to guide the protrusion 19 to the recess 23. The aperture D2 of the opening 24 is smaller than the maximum outer diameter D1 of the projection 19.

  In other words, the fitting piece 22 is inclined toward the inner side in the radial direction of the second fitting portion 20 as it approaches the tip edge from the intermediate portion in the length direction. Due to this inclination, the inner surface of the fitting piece 22 extends along the outer peripheral surface from the intermediate portion 19c of the protrusion 19 to the tip 18b. For this reason, the recess 23 has a spindle-shaped space corresponding to the projection 19 inside thereof. Therefore, the maximum inner diameter D3 of the recess 23 is determined by an intermediate portion of the recess 23 located between the bottom of the recess 23 and the leading edge of the fitting piece 22. It is larger than the maximum outer diameter D1.

  Therefore, in the case of the present embodiment, the maximum outer diameter D1 of the protrusion 19, the aperture D2 of the opening 24, and the maximum inner diameter D3 of the recess 23 satisfy the relationship of D2 <D1 <D3.

  As shown in FIG. 2, the former soot tube 3 has a large-diameter portion 25 on the outer periphery of the tip portion 3b. The large-diameter portion 25 is formed, for example, by laminating a fiber reinforced prepreg on the outer peripheral surface of the distal end portion 3b of the original top tube 3 over one or more layers. The large-diameter portion 25 is not limited to being formed with a fiber-reinforced prepreg, and for example, it is built up by applying a resin paint such as an epoxy resin or a urethane resin to the outer peripheral surface of the tip portion 3b. A metal ring may be formed by adhering to the outer peripheral surface of the tip 3b.

  The large-diameter portion 25 is slidable to a plurality of convex portions (not shown) protruding from the inner surface of the distal end portion 2b of the main rod tube 2 when the upper rod tube 3 is accommodated inside the main rod tube 2. Abut. By this contact, rattling of the former soot tube 3 with respect to the former soot tube 2 is stopped, and the former soot tube 2 and the former soot tube 3 are aligned coaxially.

  Further, in the present embodiment, the length from the rear edge of the large-diameter portion 25 of the original upper tube 3 to the rear end of the outer wall 14 of the middle and lower plug 11 is L1, and from the edge of the distal end portion 2b of the main tube 2 L1 and L2 are defined so as to satisfy the relationship L1 <L2, where L2 is the length to the tip 19b of the protrusion 19 of the original lower plug 6.

  For this reason, when the upper soot tube 3 is accommodated inside the main soot tube 2, the large diameter portion 25 of the upper soot tube 3 first comes into contact with the convex portion of the main soot tube 2. When the upper upper tube 3 is further pushed into the inner surface of the main tube 2 in this state, the tip 19b of the protruding portion 19 enters the recess 23 of the second fitting portion 20.

  More specifically, the tip 19b of the protrusion 19 enters the recess 23 of the second fitting portion 20 while being elastically deformed so as to push open the fitting piece 22 as the original upper tube 3 is pushed. The section of the fitting piece 22 until its tip reaches the intermediate portion 19 c of the protrusion 19 is elastically deformed so as to expand inside the outer wall 14. When the tip of the fitting piece 22 passes through the intermediate portion 19c of the protruding portion 19, the outer diameter of the protruding portion 19 gradually decreases, so that the force for expanding the fitting piece 22 disappears. Thereby, the fitting piece 22 returns to the original shape so as to follow the outer peripheral surface from the intermediate part 19c of the protrusion part 19 to the base end 19a.

  FIG. 4 discloses a state in which the protrusion 19 is completely fitted in the recess 23. At this time, the tip of the fitting piece 22 enters the constricted portion between the main body 7 of the original lower plug 6 and the base end 19a of the protruding portion 19, and the four fitting pieces 22 hold the protruding portion 19. Yes. As a result, the movement of the projection 19 in the direction in which the original lower plug 6 moves away from the middle lower plug 11 is restricted, and the original lower plug 6 and the middle lower plug 11 are connected via the projection 19 and the second fitting portion 20. Are combined with each other. Accordingly, the upper soot tube 3 is coaxially held inside the main soot tube 2 at two locations separated in the axial direction, and the position of the former soot tube 3 inside the main soot tube 2 is fixed. Is determined.

  As shown in FIGS. 4 and 5, there is play between the outer peripheral surface of the projection 19 and the inner surface of the recess 23 when the projection 19 is fitted in the recess 23 of the second fitting portion 20. To do. In the present embodiment, the above-mentioned play means a gap S1 generated between the outer peripheral surface of the protrusion 19 and the inner surface of the recess 23. The gap S1 may exist entirely or partially between the outer peripheral surface of the protrusion 19 and the inner surface of the recess 23.

  The gap S1 between the outer peripheral surface of the protrusion 19 and the inner surface of the recess 23 allows relative rotation between the protrusion 19 and the second fitting portion 20. Thereby, even if the upper soot tube 3 is rotated in the state where the upper soot tube 3 is accommodated inside the former soot tube 2, for example, the protruding portion 19 and the second fitting portion 20 which are in the fitted state are used. Will idle with each other.

  Further, when the protrusion 19 is completely fitted into the recess 23 of the second fitting portion 20, the tip edge of the fitting piece 22 does not come into contact with the main body 7 of the original lower plug 6, and the main body 7. Away from. For this reason, another gap S <b> 2 that allows relative rotation of both of them is formed between the front end edge of the fitting piece 22 and the main body 7. This gap S2 is preferably larger than the gap S1.

  According to the first embodiment of the present invention, the protrusion 19 of the original lower plug 6 and the second fitting part 20 of the middle lower plug 11 have gaps S1, S2 even in the fitted state. It is separated with a gap. Therefore, even if the upper upper pipe 3 is housed inside the main main pipe 2 and both of them rotate relatively, the lower main plug 6 and the middle lower plug 11 simply idle.

  Therefore, torque is difficult to be transmitted from the middle lower plug 11 of the former upper pipe 3 to the former lower plug 6, and torque is less likely to be transmitted from the former lower plug 6 of the former upper pipe 2 to the middle lower plug 11. As a result, it is possible to reliably prevent the lower and upper plugs 6 screwed into the main rod pipe 2 and the middle and lower plugs 11 screwed into the upper upper pipe 3 from being loosened or dropped off.

  On the other hand, when the upper upper tube 3 is pushed into the inner surface of the main tube 2 with a strong force, the tip 19 b of the protrusion 19 of the lower lower plug 6 may hit the bottom of the recess 23. At this time, since the tip 19b of the protrusion 19 has a tapered spherical surface, the contact range between the tip 19b of the protrusion 19 and the bottom of the recess 23 is narrowed.

  At the same time, the tip 19b of the protrusion 19 and the bottom of the recess 23 are in contact with each other on the axis O1 of the main rod tube 2 and the axis O2 of the upper rod tube 3. For this reason, even if the middle / lower stopper 11 rotates together with the former upper tub tube 3, the torque of the middle / lower stopper 11 becomes difficult to be transmitted to the protrusion 19. As a result, even if the tip 19b of the protrusion 19 is in contact with the bottom of the recess 23, the middle lower plug 11 and the original lower plug 6 are difficult to loosen, and the middle lower plug 11 and the original lower plug 6 are prevented from falling off. it can.

  From this, as the tip 19b of the projection 19 is sharpened, the tip 19b comes into point contact with the bottom of the recess 23 on the axis O1, O2, and the torque from the middle / lower plug 11 is applied to the projection 19. Becomes more difficult to communicate.

  Furthermore, according to the first embodiment, the fitting piece 22 grips and holds the protruding portion 19 by changing the number, thickness, tip shape, and material of the middle / lower plug 11 of the fitting piece 22. You can freely adjust the force when you do.

  In addition, in the first embodiment, the projecting portion 19 of the former lower plug 6 is the second after the large diameter portion 25 of the former upper tube 3 abuts the inner surface of the distal end portion 2b of the original lower tube 2. It fits into the recess 23 of the fitting part 20. In other words, when the projection 19 enters the opening 24 of the recess 23 and pushes the fitting piece 22 open, the fitting between the large diameter portion 25 and the distal end portion 2b of the main tube 2 leads to The coaxiality with the former upper tube 3 is secured.

  As a result, the tip 19b of the protrusion 19 is smoothly guided to the opening 24 of the second fitting portion 20 following the accommodating operation of the upper soot tube 3. Therefore, it is possible to avoid applying an excessive force to the resin fitting piece 22, which makes it difficult to damage the fitting piece 22 and to improve the durability of the fitting piece 22.

  In practicing the present invention, the inner edge at the tip of the fitting piece 22 that forms the opening 24 may be chamfered. By so doing, when the protrusion 19 enters the opening 24, the resistance of the contact portion between the tip of the fitting piece 22 and the outer peripheral surface of the protrusion 19 is reduced. Therefore, the protrusion 19 fits smoothly into the second fitting portion 20, and the feeling when the main fence upper tube 3 is accommodated inside the main fence tube 2 becomes good.

  The present invention is not limited to the first embodiment described above, and various modifications can be made without departing from the spirit of the invention.

  In the first embodiment, the main body and the protrusion of the former lower stopper are integrally formed of the same material, but the present invention is not limited to this. For example, the main body of the original lower plug may be formed of a resin material such as polyacetal resin or an elastic member such as rubber, and the protrusion may be formed of a resin material or metal material harder than the main body.

  Further, when the main body of the original lower plug is made of a metal material, the rear end portion of the main body may be covered with a flexible elastic member such as rubber. According to this structure, even if the angler presses the rear end portion of the former lower plug 6 against the body, there is no pain.

  8 and 9 disclose a second embodiment of the present invention. The second embodiment is different from the first embodiment in the configuration of the fitting portion between the original lower plug 6 and the middle lower plug 11, and the other configuration of the fishing rod 1 is the first embodiment. It is the same as the form. Therefore, in the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  The middle / lower plug 11 is made of metal or a hard resin material. The middle / lower stopper 11 has a disk-shaped main body 30 located at one end of the male screw portion 13. The main body 30 covers and protects the edge of the rear end 3 a of the original upper tube 3 and has a second fitting portion 31.

  The second fitting part 31 includes a protruding part 32. The protrusion 32 is formed integrally with the main body 30 and protrudes coaxially from the center of the main body 30 toward the inside of the main casing 2. For this reason, the protrusion 32 is positioned on the axis O2 of the former upper tube 3.

  The protrusion 32 has a base end 32a continuous with the main body 30, a tip 32b located on the opposite side of the base 32a, and an intermediate portion 32c located between the base 32a and the tip 32b. The proximal end 32a and the distal end 32b have a smaller outer diameter than the intermediate portion 32c, and the proximal end 32b has a spherical shape. Therefore, the protrusion 32 has a spindle-shaped external shape similar to that of the first embodiment.

  On the other hand, the former lower stopper 6 is made of a synthetic resin material. The original lower stopper 6 has a hollow cylindrical first fitting portion 33. The first fitting portion 33 is formed integrally with the main body 7 of the former lower plug 6 and protrudes coaxially from the main body 7 toward the inner side of the main casing 2.

  The first fitting portion 33 is divided into a plurality of fitting pieces 34 by slits (not shown). The fitting pieces 34 are arranged at intervals in the circumferential direction of the main rod tube 2 and can be elastically deformed in the radial direction of the main rod tube 2 individually. The fitting piece 34 defines a recess 35 into which the protrusion 32 of the middle / lower plug 11 is detachably inserted into the first fitting portion 33. The recess 35 is located on the axis O1 of the main tube 2 and the bottom of the recess 35 is a spherical surface corresponding to the tip 32b of the protrusion 32.

  The fitting piece 34 has a leading edge located on the opposite side of the main body 7. The leading edge of the fitting piece 34 forms an opening 36 that guides the protrusion 32 to the recess 35 in cooperation with each other. The diameter D2 of the opening 36 is smaller than the maximum outer diameter D1 of the protrusion 32, and the maximum inner diameter D3 of the recess 35 is larger than the maximum outer diameter D1 of the protrusion 32.

  The protrusion 32 of the middle / lower stopper 11 enters the recess 35 of the first fitting portion 33 while being elastically deformed so as to push open the fitting piece 34 as the original upper tube 3 is pushed. FIG. 9 discloses a state in which the protrusion 32 is completely fitted in the recess 35. At this time, the tip of the fitting piece 34 enters the constricted portion between the main body 30 and the protruding portion 32 of the middle and lower plug 11, and the plurality of fitting pieces 34 hold the protruding portion 32. Thereby, the movement of the protrusion 32 in a direction in which the middle lower plug 11 moves away from the original lower plug 6 is restricted, and the original lower plug 6 and the middle lower plug 11 are interposed via the protrusion 32 and the first fitting portion 33. Are combined with each other.

  As shown in FIG. 9, there is play between the outer peripheral surface of the protrusion 32 and the inner surface of the recess 35 in a state where the protrusion 32 is fitted in the recess 35 of the first fitting portion 33. In the present embodiment, the above-mentioned play means a gap S1 generated between the outer peripheral surface of the protrusion 32 and the inner surface of the recess 35.

  A gap S1 between the outer peripheral surface of the protrusion 32 and the inner surface of the recess 35 allows relative rotation between the protrusion 32 and the first fitting portion 33. Thereby, even when the upper soot tube 3 is rotated in the state where the upper soot tube 3 is accommodated inside the former soot tube 2, for example, the projecting portion 32 and the first fitting portion 33 in the fitted state are rotated. Will idle with each other.

  Further, when the protrusion 32 is completely fitted in the recess 35 of the second fitting portion 33, the tip of the fitting piece 34 is not contacted with the main body 30 of the middle / lower plug 11, and the main body 30 is not touched. is seperated. For this reason, another gap S2 is formed between the tip of the fitting piece 34 and the main body 30 to allow relative rotation between the two.

  According to the second embodiment of the present invention as described above, the protrusion 32 of the middle lower plug 11 and the first fitting portion 33 of the original lower plug 6 have gaps S1, S2 even in the fitted state. It is separated with a gap. Therefore, even if the upper upper pipe 3 is housed inside the main main pipe 2 and both of them rotate relatively, the lower main plug 6 and the middle lower plug 11 simply idle.

  Therefore, as in the first embodiment, torque is not easily transmitted from the middle lower plug 11 of the upper upper pipe 3 to the lower lower plug 6 and from the original lower plug 6 of the original upper pipe 2 to the middle lower plug 11. Torque is difficult to be transmitted to. Therefore, it is possible to reliably prevent the original lower plug 6 and the middle lower plug 11 from being loosened or dropped off.

  10 and 11 disclose a third embodiment of the present invention.

  In the third embodiment, the configuration of the original lower plug 6 is different from that of the first embodiment, and the other configuration of the fishing rod 1 is the same as that of the first embodiment.

  As shown in FIG. 10, the protruding portion 19 of the original lower plug 6 is composed of another component independent of the main body 7 of the original lower plug 6. The protruding portion 19 includes a spindle-shaped main portion 41 and a shaft portion 42 that protrudes coaxially from one end of the main portion 41. The shaft portion 42 of the protrusion 19 is supported by the main body 7 via a ball bearing 43.

  As shown in FIG. 11, the main body 7 of the former lower plug 6 includes a housing portion 44 that houses the ball bearing 43. The accommodating portion 44 is a recess that opens to the inside of the rear end 2a of the main rod tube 2 and is coaxially positioned on the axis O1 of the main rod tube 2.

  The ball bearing 43 includes an outer ring 45 that is press-fitted into the housing portion 44, and an inner ring 47 that is rotatably supported inside the outer ring 45 via a plurality of balls 46. The ball 46 is an example of a rolling element, and the rolling element is not limited to a ball and may be a needle, for example. The shaft portion 42 of the protrusion 19 is press-fitted inside the inner ring 47 and is fixed to the inner ring 47 via a screw 48. Therefore, the protrusion 19 is separated from the main body 7 of the former lower stopper 6 and is rotatable along with the inner ring 47 and the screw 48 in the circumferential direction of the former casing 2.

  The head portion 48 a of the screw 48 is located between the bottom of the housing portion 44 and the end surface of the shaft portion 42. The head 48 a is separated from the bottom of the housing portion 44, and a gap S 3 is formed between the head 48 a and the bottom of the housing portion 44.

  According to the third embodiment of the present invention as described above, the protrusion 19 that fits into the second fitting portion 20 of the middle lower plug 11 is rotatably supported by the former lower plug 6. For this reason, even if the torque transmitted from the middle / lower stopper 11 cannot be absorbed by the fitting portion between the second fitting portion 20 and the projection portion 19 when the former upper pipe 3 is rotated, for example, this torque Is absorbed without being transmitted to the original lower stopper 6 by the rotation of the protrusion 19.

  Conversely, even when the main soot pipe 2 is rotated with respect to the former upper soot pipe 3, the main body 7 and the projection 19 of the former lower stopper 6 can be rotated relatively, so the torque from the former lower stopper 6 is It is absorbed without being transmitted to the protrusion 19.

  Therefore, the transmission of torque between the former lower plug 6 of the main rod tube 2 and the middle lower plug 11 of the former upper tube 3 can be blocked by the ball bearing 43. Is more difficult to loosen.

  In addition, the bearing which supports the shaft part 42 of the protrusion 19 is not limited to a ball bearing, and for example, a slide bearing may be used.

  FIG. 12 discloses a fourth embodiment of the present invention.

  The fourth embodiment is different from the first embodiment in the structure of the fitting portion between the original lower plug 6 and the middle lower plug 11, and the other configuration of the fishing rod 1 is the first. This is the same as the embodiment.

  As shown in FIG. 12, a ball bearing 51 is attached to the inner side of the male screw portion 8 of the former lower plug 6. The ball bearing 51 includes an outer ring 52 that is press-fitted inside the male thread portion 8, and an inner ring 54 that is rotatably supported inside the outer ring 52 via a plurality of balls 53. The ball 53 is an example of a rolling element, and the rolling element is not limited to a ball and may be a needle, for example. The inner ring 54 is positioned coaxially with the axis O1 of the main casing 2.

  The main body 12 of the middle / lower stopper 11 has a cylindrical protrusion 56. The protrusion 56 is formed integrally with the main body 12 and protrudes coaxially from the main body 12 to the inner side of the main casing 2. The protrusion 56 is detachably fitted to the inner side of the inner ring 54 of the ball bearing 51 when the upper upper tube 3 is accommodated inside the main shaft 2.

  Therefore, the ball bearing 51 is interposed in the fitting portion between the original lower plug 6 and the middle lower plug 11 to allow relative rotation of the original lower plug 6 and the middle lower plug 11.

  According to the fourth embodiment of the present invention as described above, for example, when the upper soot tube 3 is rotated, the protrusion 56 of the middle and lower stopper 11 rotates together with the former upper soot tube 3. However, since the protrusion 56 is fitted to the inner ring 54 of the ball bearing 51, torque from the protrusion 56 is absorbed without being transmitted to the original lower plug 6 as the inner ring 54 rotates freely.

  On the contrary, even when the main casing 2 is rotated with respect to the upper main casing 3, the main body 7 and the projection 56 of the original lower stopper 6 can be relatively rotated with the ball bearing 51 interposed therebetween. Torque from the original lower plug 6 is absorbed by the ball bearing 51 without being transmitted to the protrusion 56.

  Therefore, the transmission of torque between the former lower plug 6 of the main rod tube 2 and the middle lower plug 11 of the former upper tube 3 can be blocked by the ball bearing 51. Is more difficult to loosen.

The side view of the swing type fishing rod which concerns on the 1st Embodiment of this invention. The 1st Embodiment of this invention WHEREIN: The side view of the fishing rod which shows the state which accommodated the former upper rod pipe inside the original rod pipe in a partial cross section. In 1st Embodiment of this invention, sectional drawing of the fishing rod which shows the positional relationship of the former lower stopper of a main rod, and the middle lower plug of a former upper rod. Sectional drawing of the fishing rod which shows the state which the former lower stopper of the main rod pipe, and the middle lower plug of the former upper rod pipe mutually fit in the 1st Embodiment of this invention. Sectional drawing which follows the F5-F5 line | wire of FIG. Sectional drawing of the middle and lower stopper which concerns on the 1st Embodiment of this invention which obstruct | occludes the rear-end opening part of the former upper soot pipe. Sectional drawing which follows the F7-F7 line | wire of FIG. In 2nd Embodiment of this invention, sectional drawing of the fishing rod which shows the positional relationship of the former lower stopper of a main rod pipe, and the middle lower plug of a former upper rod pipe. In 2nd Embodiment of this invention, sectional drawing of the fishing rod which shows the state which the former lower stopper of the main rod pipe and the middle lower plug of the former upper rod pipe mutually fitted. In 3rd Embodiment of this invention, sectional drawing of the fishing rod which shows the positional relationship of the former lower stopper of a main rod pipe, and the middle lower plug of a former upper rod pipe. Sectional drawing which shows the attachment structure of the projection part with respect to the former lower stopper in the 3rd Embodiment of this invention. In 4th Embodiment of this invention, sectional drawing of the fishing rod which shows the positional relationship of the former lower stopper of a main rod pipe, and the middle lower plug of a former upper rod pipe.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Fishing rod, 2 ... Former rod tube, 3 ... Former upper rod tube, 6 ... Former lower stopper, 11 ... Middle lower stopper, 18, 33 ... 1st fitting part, 20, 31 ... 2nd fitting part , 51 ... bearings (ball bearings ), 52 ... outer rings, 53 ... rolling elements (balls), 54 ... inner rings.

Claims (9)

Marshal pipe,
A former upper pipe that is accommodated inside the former pipe so as to be able to be pulled out;
An original lower stopper provided at a rear end portion of the proximal side of the main body pipe and having a first fitting portion located on the inner side of the upper side pipe;
A middle and lower plug provided at a rear end portion of the former upper tube side of the former upper tube side and having a second fitting portion facing the first fitting portion;
When the upper soot pipe is accommodated inside the main steel pipe, the original fitting pipe and the second fitting part are fitted to each other to fit the original inside the main steel pipe. A fishing rod designed to hold a rod
Any one of the first fitting portion and the second fitting portion can be elastically deformed when fitted to the other fitting portion, and the first fitting portion can be elastically deformed. A fishing rod characterized in that there is a play that allows relative rotation at a fitting portion between the joint portion and the second fitting portion. The description of claim 1, wherein the first fitting portion includes a protruding portion that protrudes from the original lower plug to the inside of the original lower tube, and the protruding portion includes a proximal end that is continuous with the original lower plug; The distal end located on the opposite side of the proximal end and an intermediate portion located between the proximal end and the distal end, and the proximal end and the distal end are formed with a smaller outer diameter than the intermediate portion,
The second fitting portion has a plurality of fitting pieces that can be elastically deformed in the radial direction of the original upper tube, and these fitting pieces are spaced from each other in the circumferential direction of the original upper tube. The protrusion is formed so that the protrusion is detachably inserted, and the front end edge of the fitting piece cooperates with each other to form an opening for guiding the protrusion to the recess. The diameter of the opening is smaller than the outer diameter of the intermediate part of the protrusion.   The gap according to claim 2, wherein when the first fitting portion and the second fitting portion are fitted to each other, a gap exists between the leading edge of the fitting piece and the original lower plug. A fishing rod characterized by 2. The second fitting portion according to claim 1, wherein the second fitting portion includes a protrusion protruding from the middle lower plug toward the inside of the main tube, and the protrusion includes a proximal end connected to the middle lower plug. And a distal end located on the opposite side of the proximal end, and an intermediate portion located between the proximal end and the distal end, and the proximal end and the distal end are formed with a smaller outer diameter than the intermediate portion. ,
The first fitting portion has a plurality of fitting pieces that can be elastically deformed in the radial direction of the main steel pipe, and these fitting pieces are spaced from each other in the circumferential direction of the main steel pipe. The protrusions are arranged so that the protrusions are removably inserted into the recesses, and the leading edges of the fitting pieces cooperate with each other to form an opening for guiding the protrusions to the recesses. The diameter of the fishing rod is smaller than the outer diameter of the intermediate portion of the protrusion.   5. The gap according to claim 4, wherein when the first fitting portion and the second fitting portion are fitted to each other, there is a gap between a leading edge of the fitting piece and the middle / lower plug. A fishing rod characterized by   6. The method according to claim 2, wherein the tip of the protrusion has a spherical shape and the first fitting portion and the second fitting portion are fitted to each other. A fishing rod characterized in that it makes point contact with the bottom of the recess, and the contact portion between the tip of the projection and the bottom of the recess is located on an axis passing through the center of the main rod tube and the upper rod tube. .   3. The fishing rod according to claim 1, wherein the first fitting portion is rotatably supported via a bearing with respect to the original lower plug.   In Claim 1, The said former upper side pipe | tube has a large diameter part whose diameter is larger than the internal diameter of the front-end | tip of the said former side pipe | tube at the front end part on the opposite side to the said middle and lower stopper, This large diameter part Is slidably fitted to the main casing tube prior to the fitting of the first fitting portion and the second fitting portion when the upper casing tube is accommodated in the main casing tube. A fishing rod characterized by Marshal pipe,
A former upper pipe that is accommodated inside the former pipe so as to be able to be pulled out;
A former lower stopper that closes the rear end of the proximal side of the former soot tube,
A middle and lower plug for closing the rear end portion of the former soot tube side of the former soot tube,
When the former soot pipe is accommodated inside the former soot pipe, the above-mentioned former soot pipe and the middle and lower stoppers are fitted to each other so that the above-mentioned soot pipe is held inside the above-mentioned soot pipe A fishing rod
A bearing that allows relative rotation of the original lower plug and the middle lower plug is interposed in a fitting portion between the original lower plug and the middle lower plug , and this bearing is an outer ring fixed to the original lower plug. And an inner ring rotatably supported through a plurality of rolling elements inside the outer ring, and the middle and lower plugs are arranged as described above when the upper upper hose pipe is accommodated inside the former hail pipe. A fishing rod having a protrusion that is removably fitted inside the inner ring .

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