JP3400903B2 - Through fishing rod - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a through fishing rod. 2. Description of the Related Art In a through fishing rod, a structure near a fishing line introduction part for introducing a fishing line from the outside to the inside is formed by a real fishing line.
No. 100377, JP-A-4-248945,
It is disclosed in Japanese Utility Model Laid-Open No. 1-178373. In the first and second gazettes, a hole associated with the introduction of a fishing line is formed in a thick portion of a rod pipe, and a frame or a tubular frame having a fishing line introduction hole formed outside the hole. In the third publication, a fishing line introduction portion is disposed between a joint portion of the front and rear rod pipes and an overlapping portion of both rod pipes. [0003] However, in the first and second publications, the hole accompanying the introduction of the fishing line is formed in a thick portion, and the rod pipe area near the hole is reinforced, The bending stiffness is very large in this area compared to other areas,
Even when a load is applied to the fishing rod, it is difficult to bend only in this region, so that the bending is not smooth and the balance is poor, and stress concentration occurs at the thick end portion in the longitudinal direction and the fishing rod is easily broken. Further, in the third publication, since the fishing line introduction part is formed while the front and rear rod pipes overlap, the joint length becomes long, and the region having high bending rigidity becomes long, so that smooth bending can be obtained. In addition, there is a problem that the bending balance is poor and the strength is reduced due to the notch structure.
Furthermore, in the joint type fishing rod, the bending rigidity of each joint portion is high, and the bending rigidity of the fishing line introduction portion is high, and in addition, there are many regions with high bending rigidity, and the deflection balance of the fishing rod as a whole generally deteriorates. Tend. Accordingly, an object of the present invention is to improve the deflection balance of a fishing rod. It is another object of the present invention to improve the bending balance while preventing the concentration of stress on the through fishing rod by reinforcement near the hole due to the introduction of the fishing line. [0005] In view of the above-mentioned object, according to the present invention, in the first aspect, a hole is formed in the rod tube along with the introduction of the fishing line, and a reinforcing portion is formed in a rod tube region around the hole. , The reinforcement
Soft synthetic resin, rubber, or low elastic fiber reinforced resin
Use, to provide a fishing rod through inside, characterized in that it is gradually decreased flexural rigidity at the end portions of the reinforcing portion in the longitudinal direction. This reinforcement means thickening reinforcement for crush resistance and buckling resistance, and brittle materials such as ceramics are not suitable for reinforcement materials, and ductility of metals, fiber reinforced resins, fiber reinforced metals, plastics, etc. Use wood. However, ordinary rubber materials do not serve as reinforcement . According to the first aspect of the present invention, since the rod tube area around the hole is reinforced, it is possible to prevent the fishing rod from being damaged from the area around the hole when a load is applied to the fishing rod. Since the bending stiffness is gradually reduced at the end, stress concentration in this part is prevented and it is difficult to break,
The bending becomes smooth, and the bending balance is improved . DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail based on embodiments shown in the accompanying drawings. FIG. 1 shows an example of a swing-out boring fishing rod according to the present invention, in which a middle rod 12 is spliced to a splicing portion 10T at the front end of a former rod 10, and a tip rod 14 is spliced thereto. Top guide 1 at the tip
6 is attached, and a rod end part 22 is provided at the rear end of the former rod 10.
Is installed. A reel leg fixing device 18 for fixing the reel 20 is mounted on the original rod 10, and a fishing line introducing portion 26 is provided in front of the reel leg fixing device 18. FIG. 2 is an enlarged vertical sectional view of this portion. Referring to FIG. 2, a hole 10H of a predetermined size is provided in the original rod 10, and ceramics, metal, etc. are provided around the hole 10H. A cylindrical frame 28 made of, for example, plastic or fiber reinforced resin, to which a fishing line guide G1 formed of a hard member is attached, is fitted and fixed. A fishing line guide G2 of the same material is inserted and fixed in the hole 10H as shown in the figure, and an upper portion thereof is formed as an open opening 28H. There is no place to contact when tension is applied to the fishing line 24 except for the fishing line guide G1 and the fishing line guide G2. The cylindrical frame 28 also plays a role of a member that reinforces insufficient strength around the hole caused by the hole 10H provided in the original rod 10. In addition,
An inner reinforcing layer 10A and an outer reinforcing layer 10B are provided on the inner circumference and the outer circumference of the main pole 10 as reinforcing members. For these reinforcing layers, tubular or sheet-like members can be used. In particular, the tubular member can be used by being fitted over a core during molding, and is convenient as the inner reinforcing layer 10A. Examples of the member include a woven fabric of glass fiber, carbon fiber, and organic fiber (or a prepreg impregnated with resin), a metal net, and the like. The use of a woven fabric is preferable because burrs are not easily generated during machining and a crepe phenomenon does not easily occur. Since the expansion ratio at the time of bending is smaller on the inner side, fibers or the like having a higher elastic modulus can be used for the inner reinforcement layer than the outer reinforcement layer. However, it is preferable to reinforce using a member having a low elastic modulus as compared with the main rod body, since the flexibility is hardly hindered. In this way, the thickness of the hole is increased, and the periphery of the hole is reinforced by using a woven fabric or a net. Although the cylindrical frame 28 is made of synthetic resin, it may be made of fiber reinforced resin. In addition, the fishing line 24
Is formed high so that the fishing line 24 does not contact the outer peripheral surface of the original rod. [0011] Simply reinforcing the lack of strength of the rod 10 due to the presence of the hole 10H increases the bending rigidity of this reinforcing region, the bending state of the fishing rod does not become smooth, and a so-called curving occurs. In addition, stress concentration occurs where the rigidity changes suddenly. For this reason, reinforcing auxiliary cylinders 30 are respectively provided continuously with the front and rear ends in the longitudinal direction of the cylindrical frame 28. The auxiliary cylinder 30 is formed to be thinner toward the end.
The forming material is also made of a synthetic resin, rubber, wood, or other natural material that is softer than the cylindrical frame 28, or a fiber-reinforced resin with low elasticity. It gradually decreases in the direction of the part, thereby preventing stress concentration and smoothing the bending. In a structure in which only the hole 10H side (upper side in FIG. 2) of the rod pipe is thickly reinforced, only the upper side member may be used instead of the auxiliary cylinder 30. Further, the inner reinforcing layer 10A and the outer reinforcing layer 10B are terminated by being separated by a distance L2 as shown in the figure, and the outer reinforcing layer 10B and the auxiliary cylinder 30 are separated by a distance L.
By terminating at a distance of one, the change in bending stiffness can be made gentler, stress concentration can be reduced, and bending can be made smoother. FIG. 3 shows another embodiment, in which a pipe-shaped guide tube 32 is inserted into a hole 10H provided in the main rod 10. As shown in FIG. This pipe-shaped guide tube is held by a plate-shaped or semi-cylindrical frame 28 ', and this frame is fixed to the outer periphery of the original rod and to the area around the hole 10H. The inner reinforcement body 3 is provided in the inner area around the hole 10H.
4 is fixedly arranged, and in particular, the reinforcing body 34 reinforces the insufficient strength of the rod pipe due to the presence of the hole 10H.
Although the guide tube 32 penetrates the reinforcing body obliquely, the guide tube 32 may be omitted. The diagonal holes for the guide rods of the main pole, the reinforcing body, and the frame are made of a frame 2 made of synthetic resin or the like.
8 'may be individually drilled after injection molding, but if the hole is drilled together after bonding to the original rod 10, the size of the hole and the guide tube can be easily matched, and a smaller hole is required. The strength is improved and the need for reinforcement is reduced. The reinforcing member 34 can be formed of a fiber reinforced resin or metal. However, in order to reduce the bending rigidity of the fishing line introduction portion and make it easier to bend, the reinforcing member 34 is formed of a material having a lower elastic modulus than the reinforcing fiber of the original rod body. Is preferred. In the case of such reinforcement inside the original rod, the original rod can be made thinner, and a fishing rod with a cleaner appearance can be provided. However, the hole 10 accompanying the introduction of the fishing line
H must penetrate the guide tube 32 and the like, and since it is necessary to penetrate the fishing line into such a guide tube, there is a lower limit on the diameter. Therefore, when the inner diameter of the original rod 10 is very small, the strength may be extremely reduced due to the provision of the hole 10H. In addition, since the reinforcing member is disposed inside the main rod body, the expansion and contraction of the reinforcing body when bent is smaller than that of the main rod body. Therefore, even if a material having a higher elastic modulus than the reinforcing fiber of the main body is used for the reinforcing body 34 in the case of such a small diameter rod pipe, the bending rigidity is not extremely increased. Therefore, the reinforcing member 34 can be strongly reinforced by using a material having a higher modulus of elasticity than the reinforcing fiber of the main rod body, so that a reinforcing member can be eliminated outside the main rod in which the relatively large hole 10H is formed. Or less. Therefore, the fishing rod can be made thinner, and a fishing rod with a cleaner appearance can be formed. The inner reinforcing member 34 may be hollowed out as indicated by 34H, and the reinforcing member is provided only on the side where the hole 10H exists (the upper side in FIG. 3), and the opposite side (the lower side). May be eliminated. However, as described above, in order to prevent stress concentration and obtain a smooth deflection, the reinforcing auxiliary member 36 is connected to the front and rear ends of the reinforcing member 34.
The outer periphery is fixed to the inner surface of the original rod. The thickness of the auxiliary body is gradually reduced toward the end as shown. As the material, the same material as that of the first embodiment can be used so that the bending rigidity is smaller than that of the reinforcing member 34. Of course, the same applies to the first embodiment, but the rigidity may be reduced only by the shape such as the thickness of the reinforcing body. In addition, 10T 'is a joint part for joining, and the step part DS is for insertion positioning of the auxiliary body 36 grade | etc.,. The inner rod 34 is the former rod 10
May be integrally formed. FIG. 4 shows a third embodiment around the fishing line introducing section 26. A hole 10H of a predetermined size is formed in the main pole 10, and the periphery of the hole is reinforced by a high-strength cylindrical body 38 of metal, fiber-reinforced metal, or the like. It is preferable to reduce the resistance of the fishing line by coating a wear-resistant material such as ceramics on the edge of the hole of the cylindrical body 38 or fixing another member G2. The reinforcing width dimension L3 from the edge of the hole 10H is set to be approximately equal to or larger than the inner diameter dimension of the original rod 10. Further, the bending rigidity is gradually reduced by the auxiliary cylinder 30 similar to the first embodiment,
Reduce stress concentration. The auxiliary cylinder 30 is a cylindrical body 38
As shown in the figure, a step portion is provided and held and fixed so as to press the end portion from the axial direction and the outside. This cylindrical body 38
Reference numeral denotes a reinforcing portion, which is provided for preventing expansion and contraction deformation of the hole 10H and preventing breakage of the original rod 10 when a bending load is applied to the original rod 10. Therefore, it may be formed integrally with the former rod pipe inside the former rod. If a spiral fishing line guide is formed on the inner surface of the original rod 10, and thereafter a hole 10H is formed, the peripheral portion of the hole is reinforced from the inside by the spiral fishing line guide. FIG. 5 shows an embodiment alternative to FIG. Former pole 10
Is formed by integrally laminating the inner layer 10F and the outer layer 10E. However, the periphery of the hole 10H for the fishing line guide G2 has the shape shown in FIG. In order to prevent buckling or buckling, a reinforcing member 38 'such as a metal plate is provided.
Following 8E ', an auxiliary member 30' of a low elasticity member is provided,
The auxiliary member 30 'is formed so that its thickness gradually decreases in the longitudinal direction. Therefore, the peripheral portion of the hole 10H is reinforced, and stress concentration due to the reinforcement can be prevented. 10G is a portion formed of the same type of fiber reinforced resin prepreg as the inner layer 10F and the outer layer 10E. A belt-shaped prepreg is disposed around the hole 38H of the reinforcing member 38 'to form the inner and outer layers 10G.
The hole 10H may be formed integrally with the inner and outer layers 10E and 10F, or may be formed integrally with the inner and outer layers 10E and 10F and formed with the fishing line guide G2. As shown in FIG. 6, the thickness of the reinforcing member 38 'is gradually reduced as it goes to both ends 38E in the circumferential direction, so that the rigidity of the original rod 10 in the circumferential direction is prevented from suddenly changing. Have been. As the end portions 38E 'in the longitudinal direction are reached, they may be formed to be gradually thinner in the same manner as the end portions 38E in the circumferential direction. However, as shown in FIG. It is preferable to dispose the auxiliary member 30 ′ and gradually reduce the thickness of the auxiliary member 30 ′ in the longitudinal direction to prevent stress concentration. This is because if the end 38E 'of the hard reinforcing member 38' is sharper than the auxiliary member 30 ', the inner and outer layers are easily separated. FIG. 7 shows another embodiment according to the present invention, which is a swing-through fishing rod in which the fishing line introduction portion 26 is located near the tip of the original rod 10. That is, a hole 10H of a predetermined size is provided at the front position of the former rod, and the periphery of this hole is a thickened reinforcing portion 10K. A plate-like or semi-cylindrical frame body 28 to be mounted is fixed on this. The fishing line guides G1 and G2 are the same as those in the first embodiment, and 28H is a similar opening. As indicated by the two-dot chain line 30 ', it is preferable to provide an auxiliary body for preventing stress concentration. In this embodiment, the joint portion 10T has a length LT, and the thick reinforcement portion 10 of the fishing line introduction portion 26.
It extends to the area of K. That is, the fishing line introduction part 26 is positioned forward by that much. When the middle rod 12 is spliced, the rear end of the spliced portion has reached the position of the reinforcing portion 10K, and the outer periphery of the rear end thereof contacts and presses the inner surface of the original rod. Since this portion is the reinforcing portion 10K, it is originally thickly reinforced, which is suitable for the strength of the joint portion. However, the rear end position of the middle rod needs to be located before the hole 10H of the former rod. Otherwise, when a load such as a fish acts on the fishing rod, a strong push-up force acts from the rear end of the middle rod 12 on the original rod side in the spliced region, so that the edge of the hole is easily damaged. It is.
If the reinforcing portion 10K is made thicker by increasing the reinforcing fibers oriented in the circumferential direction as compared with the main rod body behind the fishing line introducing portion, the flexibility is improved for the thickening. Also, if the number of high elasticity reinforcing fibers in the axial direction of the reinforcing portion is reduced and the number of low elasticity reinforcing fibers is increased, the flexibility is improved. The tip T4 of the joint 10T (length range L4)
Is formed thick to prevent the tip portion from being squeezed (vertical splitting), but the rear portion is about the thickness of the original rod rod tube 10 behind the fishing line introduction portion 26. . This is because, as described above, the push-up force acting on the joint portion at the time of load is taken up by the reinforcing portion 10K, and when the middle rod 12 is inserted into the former rod 10 and joined, the swelling due to the expanding action on the former rod is performed. The prevention is performed by increasing the thickness of the tip, and the strength is sufficient. Therefore, the area between them is hardly thickened in order to improve flexibility. Also, because the thickening of the tip is to prevent tearing and crushing,
This is mainly performed by arranging reinforcing fibers oriented in the circumferential direction, and therefore has good flexibility in spite of the thick wall. As an example of the length of the joint, the length L4 of the leading end is about 30 mm, and the remaining length L5 of the joint is about 30 to 130 mm. Auxiliary pipe 12 'arranged at the rear end of the middle rod 12
A fishing line guide G3 made of ceramics or the like is attached to the rear end of the fishing rod, and the fishing line is introduced into the middle rod 12 through the fishing line guide. The outer circumference of the auxiliary pipe has a small diameter so as not to press the fishing line introduction portion. If the auxiliary pipe can be moved back and forth with respect to the center rod and can be held at that position, the line resistance in introducing the line can be advantageously reduced. FIG. 8 shows a cross section around the fishing line introduction portion of the continuous type fishing rod. An auxiliary rod tube 40 having a larger diameter and a greater thickness than the former rod 10 and having a fishing line introduction portion 26 formed in the front part of the former rod 10.
Is fitted or screwed on the outer peripheral side. It may be integrally molded at the time of molding. The auxiliary rod pipe has a larger diameter than the main rod body, but as in the case of FIG. 7, the auxiliary rod pipe increases the reinforcing fibers oriented in the circumferential direction compared to the main rod body, If the direction high elasticity reinforcing fiber is reduced and the low elasticity reinforcing fiber is increased, the flexibility is improved. The auxiliary rod pipe 40 is provided with a hole 40H of a predetermined size. However, since the auxiliary rod pipe 40 has a larger diameter than the original rod 10, even if the hole is formed larger for reducing the yarn resistance, the auxiliary rod pipe 40 has The strength does not need to be reduced as compared with the case where a small hole is provided. A fishing line guide G2 made of ceramics is disposed at the edge of the hole, and furthermore, the auxiliary rod tube 40 is reinforced while the reinforcing line 42 holds the fishing line guide G2 from the surroundings. That is, the reinforcing portion 42 can be formed of a fiber-reinforced resin prepreg or the like similarly to the auxiliary rod pipe, and reinforces the insufficient strength on the side having the hole 40H (the upper side in FIG. 8). This may also be integrally formed when forming the auxiliary rod tube. Further, an auxiliary body may be provided for preventing stress concentration as shown in FIG. As shown in FIG.
The length range LT of the spliced portion 40T is determined so that the spliced portion rear end of the middle rod 12 is located in the area 2 and the reinforcing portion 42 of the fishing line introduction portion 26 is used as the spliced portion as in the case of FIG. Use. Range L
T is located on the front side of the hole 40H as in the case of FIG. Although it is not clear in the figure, the ceramic fishing line guide G
4 has a slightly smaller outer diameter that does not press the inner surface of the auxiliary rod tube 40. By doing so, as in the case of the embodiment shown in FIG. 7, the combined length of the joint portion 40T and the fishing line introduction portion 26 can be shortened, the region where the bending rigidity becomes high can be reduced, and the deflection balance of the fishing rod can be reduced. improves. Also, the cost is reduced.
The member 44 is a plug, for blocking water that has entered inside and draining water from a drain hole DH provided below the auxiliary rod pipe 40. The front side shape of the plug 44 is indicated by a two-dot chain line 44 '.
To extend to a position below the front end of the fishing line guide G2, and the shape of the holding body 12E is made to correspond to the front side shape of this plug. It is preferable that the thread is guided naturally by the guide G2, the plug, and the holder 12E, and the threading can be performed without visually confirming the rear end of the inner rod. FIG. 9 shows a cross section around a fishing line introducing portion of a reverse-joining type through fishing rod. A hole 10H is formed in the front part of the main pole 10, and a pipe-shaped guide tube 32 is inserted into this hole. This pipe-shaped guide tube is held by a cylindrical frame 28, and this frame is the outer circumference of the original rod,
It is fixed to the peripheral area of the hole 10H and reinforced. An inner reinforcing member 34 is fixedly disposed in the inner region of the original rod around the hole 10H.
The lack of strength of the rod tube due to the presence of 0H is reinforced. The guide tube 32 extends obliquely through the reinforcing member, and ceramic fishing line guides G1 and G2 are fixed to both ends. The material of the reinforcing member 34, the structure and material of the auxiliary member 36, and other effects are the same as those of the embodiment shown in FIG. The joint portion 10T is formed by using the reinforcing portion of the leading end region of the fishing line introduction portion reinforced in this manner, and its length range LT extends to a position on the front side of the hole 10H. That is, the inner diameter of the middle rod 12 'is configured so as to be fitted and inserted to the range LT and joined. Thus, the region where the bending rigidity as a whole is increased can be reduced to improve the bending balance. In order to further reduce the bending rigidity of the fishing line introduction portion 26,
If the guide tube 32 is supported by a cushion member such as a synthetic resin such as rubber or an elastomer resin, the fishing line introduction portion 26 is easily bent even if the guide tube 32 has high bending rigidity. Further, with such a configuration in which the guide tube is supported by the cushion member, the guide tube can be attached and detached. Further, in order to attach and detach the guide tube, a configuration in which the guide tube is screwed with a screw may be used. When the annular member indicated by the two-dot chain line 46 is fitted, it has the effect of determining the fitting insertion position of the middle rod 12 ′, and the effect of firmly fixing the inclined guide tube 32 to the former rod 10. . In the embodiment of FIG. 9, both the bending balance due to the reinforcing portion of the fishing line introduction portion also serving as the joining portion and the stress relaxation at the end portion of the reinforcing portion are positively achieved. In addition to the above-described splicing and reverse splicing, the structure of the present invention can be applied to spigot splicing. In the above example,
In the description, a hole is provided in the main rod 10 (or the auxiliary rod tube 40 fitted thereto), but a hole may be formed in another rod tube such as the middle rod 12 to form the fishing line introduction portion. As is apparent from the above description, according to the first aspect of the present invention, since the rod pipe area around the hole is reinforced, when a load acts on the fishing rod, the area around the hole is reduced. Not only is it prevented from being damaged from the area, but since the bending rigidity is gradually reduced at the end of this reinforcing portion, stress concentration on this portion due to the load of the rod is prevented, and the bending becomes smooth, The deflection balance is improved .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a through fishing rod according to a first embodiment of the present invention. FIG. 2 is an enlarged longitudinal sectional view of a main part of FIG. FIG. 3 is a diagram of another embodiment. FIG. 4 is a diagram of still another embodiment. FIG. 5 is a view showing another embodiment replacing FIG. 4; FIG. 6 is a perspective view of a reinforcing component used in FIG. FIG. 7 is a diagram of another embodiment. FIG. 8 is a diagram of another embodiment. FIG. 9 is a diagram of another embodiment. [Description of Signs] 10 Main rod 10A Inner reinforcing layer 10B Outer reinforcing layer 10H Hole 10K Reinforcing part 10T, 40T Joint part 26 Fishing line introduction part 30 Auxiliary cylinder 30 'Auxiliary body 34 Internal reinforcing body 36 Auxiliary body 38 Reinforcing cylinder Body

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) A01K 87/00-87/06

Claims (1)

(57) [Claims 1] A hole is formed in a rod tube along with the introduction of fishing line, and a reinforcing portion is formed in a rod tube region around the hole, and is softer than the reinforcing portion.
Use synthetic resin, rubber, or low elastic fiber reinforced resin
The bending fishing rigidity is gradually reduced in the longitudinal direction at the end of the reinforcing portion.