JP4753437B2 - Fishing rod - Google Patents

Description

  The present invention provides a swinging out structure in which a small-diameter housing and a large-diameter housing are held in an extended state by a mating portion formed over the outer peripheral surface of the small-diameter housing and the inner peripheral surface of the large-diameter housing. Concerning moths.

  In the mating portion, there is one in which a protrusion for holding an extended state is formed on either the outer peripheral surface of the small-diameter casing or the inner peripheral surface of the large-diameter casing and press-contacting the other peripheral surface. This protrusion was formed of a resin paint, and was slightly bent when pressed against the peripheral surface of the mating side, giving a holding force for holding the extended state.

Japanese Patent Laid-Open No. 6-205626 (paragraph number [0020], FIGS. 1 and 3)

  The protrusions are worn away from the press contact end when the service period is long, and the press force is reduced. Therefore, if all the protrusions are formed at the same protrusion height, in the initial stage, all the protrusions are brought into pressure contact with the mating peripheral surface with a predetermined pressure contact force. However, when wear occurs, all the protrusions wear out, and there is a possibility that the protrusions uniformly reduce the pressure contact force. As a result, the pressure contact force is weakened, and eventually, the elongated state of the small-diameter frame may not be maintained.

  An object of the present invention is to provide a swing rod that can eliminate the above-mentioned drawbacks and maintain a pressing force for maintaining the small-diameter frame in an extended state over a long period of time.

〔Constitution〕
The characteristic configuration of the invention according to claim 1 is that the small-diameter casing and the large-diameter casing are held in an extended state by a mating portion formed over the outer peripheral surface of the small-diameter casing and the inner peripheral surface of the large-diameter casing. It ’s a swinging trap
The plurality of protrusions are formed on at least one peripheral surface of the outer peripheral surface or the inner peripheral surface so as to be in pressure contact with the counterpart peripheral surface to form the mating portion, and the one peripheral surface of the plurality of protrusions The projecting height from is set to a different height, and the effects are as follows.

[Action]
That is, among the plurality of protrusions, the one having a high protrusion height is in pressure contact with the mating peripheral surface in the initial stage. Do not press the one with low protrusion height. When a projection with a high protrusion height is worn out by long-term use, the fitting force becomes weak. Therefore, in order to keep the fitting force constant, the small-diameter housing is switched to a state where it is pulled out more than the large-diameter housing.
As described above, when the fitting force becomes weak, the reason for switching the small-diameter housing to the state where it is pulled out more than the large-diameter housing is that the inner surface of the large-diameter housing corresponds to the outer surface of the mandrel at the time of manufacture. Since the tip of the inner peripheral surface of the large-diameter housing is smaller in diameter than the tip of the inner diameter of the large-diameter housing, It is because it tries to make it fit.
As a result, the outer peripheral surface of the butt end side end portion of the small-diameter housing is fitted at a position slightly moved toward the heel side with respect to the inner peripheral surface of the heel-side end portion of the large-diameter housing. Then, the next high protrusion starts to press against the other peripheral surface, the contact pressure increases, and the newly contacted protrusion compensates for the decrease in the pressing force due to wear.
In this way, since the protrusions with higher protrusion heights start to press against the other peripheral surface in order, it is possible to compensate for the decrease in the pressing force due to wear and maintain the pressing force constant.

〔effect〕
Even if the protrusions are worn, the pressure contact force does not rapidly decrease, and a stable mating portion can be configured while maintaining a constant pressure contact. In addition, since the protrusions have different protrusion heights, the pressure contact force can be reduced as compared with the case where all the protrusions are in contact with each other. As a result, when the small-diameter housing is pulled out of the large-diameter housing and switched to the extended state, the outer peripheral surface of the butt end side of the small-diameter housing suddenly contacts the inner peripheral surface of the tip-side end of the large-diameter housing. They are not pressed against each other, and are fitted in a state in which a certain moderate pressure contact force is maintained.
Therefore, the angler who operates can perform an extension operation with little impact, and the operation feeling is good. In addition, as described above, the pressure contact force is stably maintained over a long time, so that the operation is easy.

  A characteristic configuration of the invention according to claim 2 is that a buttock reinforcement pattern is disposed outside the outermost layer of the small-diameter frame, and the buttock reinforcement pattern is inclined at an inclination angle that inclines the reinforcing fiber group with respect to the ridge axis. A lower prepreg that is aligned along the upper side, and an upper prepreg that is aligned and arranged in a state that is symmetric with respect to the reinforcing fiber group of the lower prepreg and the saddle axis, The plurality of protrusions are provided on the outer side of the upper prepreg, and the function and effect thereof are as follows.

[Function and effect]
While exhibiting the effect with respect to the invention which concerns on Claim 1, there exist the following effects.
In other words, the portion supporting the protrusion is configured by overlapping the upper and lower prepregs arranged in a state where the reinforcing fiber is symmetric with respect to the cocoon axis, so that the load along the cocoon axis, the load orthogonal to the cocoon axis These reinforcing fibers also exert a resistance against loads inclined with respect to the saddle axis. Thereby, not only the tensile force and the compressive force acting between the outer peripheral surface and the inner peripheral surface fitted to each other, but also the resistance force against the shearing force can be increased, and the pressure contact state of the protrusion is firmly maintained.

  The characteristic configuration of the invention according to claim 3 is an auxiliary sheet region formed by impregnating a matrix resin into a sheet-like material configured by combining flexible fibers with a cloth and exposing the flexible fibers; A plurality of protrusions that are in pressure contact with the side peripheral surface are formed with a protrusion area formed in a state where the protrusion height is different, and the protrusion area is arranged on the buttock side from the auxiliary sheet area. The operational effects are as follows.

[Function and effect]
That is, since the flexible fiber of the auxiliary sheet area is introduced together with the protrusion of the protrusion area as being pressed against the other side peripheral surface, a soft pressure contact force as a whole can be obtained as compared with the case where the mating portion is configured only by the protrusion. Can do.
In addition, since the auxiliary sheet region is disposed on the tip side, first, the flexible fiber that is softer than the protrusion is pressed, and then the protrusion is pressed, so that the pressing force is gradually increased and the small diameter is increased. A feeling of operation until the casing is pulled out and fixed in the extended state is improved.

  According to a fourth aspect of the present invention, there is provided a bias region in which a buttock reinforcement pattern is disposed outside the outermost layer of the small-diameter frame, and the buttock reinforcement pattern is overlapped with the upper prepreg and the lower prepreg. The plurality of protrusions having different heights and the auxiliary sheet region combined with the flexible fiber, the protrusion area being disposed on the outermost layer of the small-diameter housing, and The auxiliary sheet region and the bias region are arranged in that order on the base side of the projection region, and the operation and effect are as follows.

[Function and effect]
As described above, by arranging in order, the protrusion area and the auxiliary sheet area that are partially pressed against the other peripheral surface and easily adjust the pressing force are configured to be pressed in advance, It is possible to avoid the state of being in pressure contact with each other and to start a gentle fitting. A bias area that is in pressure contact with the entire surface is arranged on the buttock side, and the bias area is pressed in the final stage during the extension operation, so that a large pressure contact force is applied compared to the protrusion area and the auxiliary sheet area. And the mating state can be determined.
With such a configuration, it is possible to obtain a firmly extended state while performing a fitting operation with a good operational feeling.

[First Embodiment]
Here, as shown in FIG. 1, the mating portion B is formed with a fitting projection 9. First, the manufacture of the casing A such as the base 10 as the small-diameter casing and the base 11 as the large-diameter casing will be described. As shown in FIG. 2, a prepreg sheet is wound around the mandrel 4 to form a casing A. Carbon fiber and other reinforcing fibers are aligned in the circumferential direction, and a prepreg sheet is formed by impregnating the aligned reinforcing fibers with a thermosetting resin such as epoxy as a matrix resin, and the prepreg sheet is cut into a predetermined shape. The first main pattern 15A is wound around the mandrel 4 to form the first layer Aa.

  Similarly, a prepreg sheet in which reinforcing fibers are arranged in the axial direction is cut into a predetermined shape and wound around the mandrel 4 as the second main pattern 15B to form the second layer Ab. As with the first layer Aa, the third layer Ac as the outermost layer is formed by cutting a prepreg sheet in which reinforcing fibers are arranged in the circumferential direction into a predetermined shape and winding it around the mandrel 4 as a third main pattern 15C.

  As shown in FIGS. 1 and 2, the tip side reinforcement pattern 12 </ b> A having a shorter axial length than the main pattern 15 on the tip side end portion and the heel side end portion on the outer surface of the third layer Ac. The heel end side reinforcing pattern 12B is wound to reinforce the heel end side end portion and the heel end side end portion. The prepreg used in the heel side reinforcement pattern 12A and the heel side reinforcement pattern 12B is the same as that of the main pattern 15, and is formed by aligning reinforcing fibers in the circumferential direction.

As the reinforcing fibers c, glass fibers and boron fibers can be used in addition to carbon fibers, and phenol resins and the like can be used as thermosetting resins. As the resin to be impregnated, a thermoplastic resin can also be used. Further, as the reinforced fibers c of these prepregs, carbon fibers having an elastic modulus of 20 to 60 ton / mm ² for the main pattern and those having an elastic modulus of 10 to 20 ton / mm ^{2 for} the reinforcing pattern are used. Become.

  Next, the configuration of the mating part B will be described. In general, the mating portion B is configured by forming a state in which the outer peripheral surface of the butt end side end portion of the small-diameter casing and the inner peripheral surface of the tip end portion of the large-diameter casing are pressed. . Here, the thing which has arrange | positioned the several protrusion 9 on the outer peripheral surface of the upper end side part of the top 10 as a small diameter housing is demonstrated.

  As shown in FIGS. 1 and 2, protrusions 9 having different shapes are arranged in the form of dots, the protrusion heights are different, and the contact areas in pressure contact with the mating peripheral surface are also different. It is mixed. With such a configuration, as described in the section of the effect, the pressure contact force of the protrusion 9 with respect to the mating surface can be maintained in a state with little change.

  The manufacturing process of the protrusion 9 will be described. In the state in which the tip side reinforcement pattern 12A and the tip side reinforcement pattern 12B are applied, the entire length of the casing is bound with a molding tape and the casing is attached to the mandrel 4 while firing. Then, after firing, it is cut into a predetermined length and finished by a polishing process.

  As shown in FIG. 1 and FIG. 2, a paper masking material 13 is covered on the buttock side end of the original 10. In the masking material 13, a large number of through holes 13a are arranged in the form of dots, which are used for forming the protrusions 9, and the diameters of the through holes 13a are set to large and small types. And by setting the thickness of each part in the masking material 13 to be different, the depth of the through-hole 13a can be made different, and thereby the protrusion height of the protrusion 9 can be set to be different.

As shown in FIG. 2 (b), the masking material 13 can be attached to the upper end of the upper part 10 of the base 10 as the casing A, and spray coating can be performed by the spray gun 14. By spraying the resin paint onto the masking material 13 with the spray gun 14, projections 9 are formed on the outer peripheral surface of the buttock side end portion of the upper 10 through the through hole 13 a of the masking material 13. The protrusion 9 has a large diameter when the through-hole 13a is large, and the protrusion 9 formed through the through-hole 13a in the thick portion of the masking material 13 has a high protrusion height.
If the same resin paint is used for the surface coating of the original 10, spray coating can be performed by a series of operations over the entire length of the original 10.

  As described above, the protrusions 9 formed on the heel end side end portion of the original 10 are formed with different heights. As a result, even if the protrusion 9 is in pressure contact with the inner peripheral surface of the tip side end portion of the base rod 11 and wears out, the next highest protrusion 9 contacts the inner peripheral surface, and the press contact force is increased. Suppress changes.

[Second Embodiment]
Here, a mode in which a bias-type prepreg is disposed at the end of the upper end of the heel 10 which is a target for forming the protrusion 9 will be described, but the difference from the first embodiment will be mainly described.
As shown in FIG. 3 and FIG. 4, a mouthpiece reinforcing pattern 5 is applied to the mandrel 4. The mouthpiece reinforcing pattern 5 is impregnated with a thermosetting resin such as epoxy as a matrix resin with respect to a reinforcing fiber c such as carbon fiber that is aligned by being inclined by a fourth inclination angle θ _{4 with} respect to the saddle axis X. A bias-type polymer in which the upper prepreg formed and the lower prepreg formed by arranging the reinforcing fibers c of the upper prepreg and the reinforcing fiber c symmetrically with respect to the saddle axis X are superimposed. It is.

As shown in FIG. 3B, the first prepreg tape 1 in which the reinforcing fibers c are aligned in the circumferential direction is spirally wound as a first layer Aa on the mandrel 4 provided with the mouthpiece reinforcing pattern 5. To do.
As shown in FIG. 3C, two main patterns are applied from the top of the first prepreg tape 1. The first main pattern 2A is a prepreg in which reinforcing fibers c are aligned along the saddle axis X, and the second main pattern 2B is also the same prepreg.
The second layer Ab is formed by winding the two prepregs on the mandrel 4 in an overlapped state or winding them in order.

As shown in FIG. 3B, in a state where two prepregs are stacked, the second prepreg tape 3 in which the reinforcing fibers c are further aligned in the circumferential direction is wound spirally as a third layer Ac. .
After the second prepreg tape 3 is wound, the outer buttock reinforcement pattern 6 is wound. In other words, the buttock reinforcement pattern 6 is formed by impregnating a thermosetting resin such as epoxy into a reinforcing fiber c such as a carbon fiber that is tilted by the third inclination angle θ _{3 with} respect to the heel axis X. A bias polymer in which the upper prepreg 6A and the lower prepreg 6A formed by arranging the reinforcing fibers c of the upper prepreg 6A symmetrically with the saddle axis X in between are aligned. is there.

  In this way, by applying the biased outer buttock reinforcement pattern 6, the outer peripheral surface of the heel end side portion of the base 10 is brought into pressure contact with the inner peripheral surface of the heel end portion of the base rod 9, so that Since the reinforcing fibers c are arranged symmetrically with the saddle axis X in between when the fibers are held in an extended state, the load of the reinforcing fibers c along the saddle axis X and the load orthogonal to the saddle axis X Not only that, a counter force is exerted against a load inclined to the heel axis X, and a shearing force at the mating portion is strengthened.

  As shown in FIG. 2, the protrusions 9 are formed by spray coating from the upper outer buttock reinforcement pattern 6 of the original 10 configured as described above. As shown in FIG. 4, the protrusions 9 have various protrusion heights and have different contact areas with the counterpart peripheral surface.

[Third Embodiment]
A mode in which different types of prepregs other than the formation of the protrusions 9 on the outer peripheral surface of the upper end of the heel end of the original 10 will be described. Differences from the second embodiment will be mainly described.
As shown in FIGS. 5A and 5B, the wound reinforcement pattern 5 and the inner butt reinforcement pattern 7 are wound around the mandrel 4, and the wound reinforcement pattern 5 and the inner buttock wound around the mandrel 4 are wound. The first prepreg tape 1 as the first layer Aa is wound from above the reinforcing pattern 7.

The configuration of the inner buttock reinforcement pattern 7 is the same as that of the mouth-wrapping reinforcement pattern 5. In other words, the inner buttock reinforcement pattern 7 is obtained by impregnating a reinforcing fiber c such as carbon fiber that is tilted and aligned with respect to the heel axis X by a first inclination angle θ _{1 with a} thermosetting resin such as epoxy. This is a biased polymer in which the formed upper prepreg and the lower prepreg formed by arranging the reinforcing fibers c of the upper prepreg in a symmetrical manner with the saddle axis X sandwiched therebetween are aligned.

As shown in FIG. 5C, two main patterns are applied from the top of the first prepreg tape 1. The first main pattern 2A is a prepreg in which reinforcing fibers c are aligned along the saddle axis X, and the second main pattern 2B is also the same prepreg.
The second layer Ab is formed by winding the two prepregs on the mandrel 4 in an overlapped state or winding them in order. The intermediate heel reinforcement pattern 8 is wound from above the second main pattern 2B.

The configuration of the intermediate buttock reinforcement pattern 8 is the same as that of the inner buttock reinforcement pattern 7. That is, the intermediate buttock reinforcement pattern 8 is obtained by impregnating a reinforcing fiber c such as a carbon fiber that is inclined with respect to the heel axis X by the second inclination angle θ ₂ and impregnating a thermosetting resin such as epoxy. This is a biased polymer in which the formed upper prepreg and the lower prepreg formed by arranging the reinforcing fibers c of the upper prepreg in a symmetrical manner with the saddle axis X sandwiched therebetween are aligned.

  Further, as shown in FIG. 5 (2), the second prepreg tape 3 as an outer layer is wound around the second main pattern 2B and the intermediate butt reinforcement pattern 8 as the third stage, and the second prepreg tape 3 The outer buttock reinforcement pattern 6 is wound from above.

The configuration of the outer buttock reinforcement pattern 6 is as follows.
In the second embodiment, the outer heel butt reinforcement pattern 6 includes a prepreg formed by inclining the reinforcing fiber c with respect to the heel axis X so that the reinforcing fibers c intersect each other. Combined 6A was used.
Here, the following auxiliary sheet 6B is superposed and used together with the polymer 6A.

That is, as shown in FIG. 6C, the auxiliary sheet 6B is formed on a prepreg 6a formed by impregnating a reinforcing fiber c such as carbon fiber in the circumferential direction with a thermosetting resin such as epoxy. As shown in FIGS. 6 (a) and 6 (b), a synthetic resin fiber c having a high flexibility such as nylon or polyester or a natural fiber c is formed by impregnating a thermosetting resin such as epoxy. The prepreg 6b is overlapped and wound around the polymer 6A so that the prepreg 6a obtained by aligning carbon fibers and the like in the circumferential direction is on the inner side.
As shown in FIG. 6C, the length of the auxiliary sheet 6B along the axial direction is shorter than that of the polymer 6A, and the auxiliary sheet 6B is wound so as to be positioned on the tip side of the polymer 6A.

As described above, the casing A is formed by winding each pattern around the mandrel 4 sequentially. Further, the inclination angle θ of the reinforcing fiber in each reinforcing pattern can be set in a range of 0 ° to 90 °, but is preferably set in a range of 45 ° to 80 °. Furthermore, the inclination angles from the first inclination angle θ ₁ to the fourth inclination angle θ ₄ may be set to the same angle, and the inclination angles may be set to different angles.

The prepreg 6b located on the front side of the casing in the auxiliary sheet 6B will be described in detail. As shown in FIG. 6 (a), the prepreg 6b is formed by cross-knitting a highly flexible synthetic resin fiber c or natural fiber c, The shape which arrange | positions c in the shape of a turtle is presented. As shown in FIG. 6 (b), since the resin impregnated in the fiber c is polished and scraped off, only the fiber c is exposed on the surface, and the turtle-like concave portion is formed. Is formed.
Therefore, even if the prepreg 6b is positioned on the surface of the mating portion B and is in pressure contact with the prepreg constituting the mating portion B on the other side, moisture is interposed due to the presence of the turtle-like concave portion. However, moisture only accumulates in the turtle-shaped recess and does not act in the direction of strengthening the pressure contact state, and the adhering state of the mating portion B is relaxed.
The auxiliary sheet 6B is impregnated with a matrix resin in a fibrous body to be completed as a prepreg, and then wound from above the polymer 6A and fired and integrated in that state.

As shown in FIG. 6, in an integrated state, the auxiliary sheet region to which the auxiliary sheet 6 </ b> B is applied and the outer peripheral surface that continues to the buttock side are polished so that the fibers are lifted from the resin portion. . That is, when the auxiliary sheet 6B is polished, the hard resin part is scraped off, and the soft fiber part is flexible, so even if it comes into contact with the grindstone, it can escape from it without receiving the grinding action. Then, the portion 6c surrounded by the fiber body portion is recessed, and the fiber body portion is relatively exposed.
After providing the auxiliary sheet 6B as described above, the protrusion 9 described above is formed further on the buttock side than the auxiliary sheet 6B. Since the method for forming the protrusions 9 has already been described in detail, the description thereof is omitted here.

Here, the arrangement state of the polymer 6A and the auxiliary sheet 6B will be described. That is, as shown in FIGS. 6 (c) and (b), the polymer 6 </ b> A located inside is arranged with a length corresponding to the length of the mating portion B. On the other hand, the auxiliary sheet 6B is arranged at a position shorter than the polymer 6A and close to the tip side. Thus, even if the polymer 6A is installed with a length corresponding to the mating part B, it is shorter than the length of the mating part B. The heel tips of the polymer 6A and the auxiliary sheet 6B do not protrude beyond the heel tip of the base rod 11, and the aesthetic appearance can be improved.
Moreover, since the polymer 6A is provided on the shoulder portion on the tip side of the mating portion B, the strength of this portion can be improved, and is generated near the tip side end in the mating portion B of the original 10. It is possible to avoid breakage of the bag that is said to be “breaking”.

[Fourth Embodiment]
Here, a configuration different from the third reinforcing pattern 6 described in the third embodiment will be described. However, in the fourth embodiment, the configuration until the third reinforcing pattern 6 is applied is not limited to that shown in the first embodiment to that shown in the third embodiment, but of other configurations. It can also be applied.

The configuration of the outer buttock reinforcement pattern 6 is as follows.
In the third embodiment, the outer heel butt reinforcement pattern 6 includes a prepreg formed by inclining the reinforcing fibers c with respect to the heel axis X so that the reinforcing fibers c intersect each other. Combined 6A was used.
Here, the following auxiliary sheet 6B is superposed and used together with the polymer 6A.

That is, as shown in FIG. 7A, the auxiliary sheet 6B is formed on a prepreg 6a formed by impregnating a reinforcing fiber c such as carbon fiber in the circumferential direction with a thermosetting resin such as epoxy. A prepreg 6b formed by impregnating a thermosetting resin such as epoxy with a cross-set of a highly flexible synthetic resin fiber c or natural fiber c such as nylon or polyester is overlapped, and carbon fibers are circumferentially The polymer 6A is wound from above so that the prepreg 6a aligned on the inside becomes the inside.
As shown in FIG. 7B, the length of the auxiliary sheet 6B along the axial direction is shorter than that of the polymer 6A, and the auxiliary sheet 6B is wound so as to be positioned at an intermediate position of the polymer 6A.

  After providing the auxiliary sheet 6B, the above-described protrusion 9 is formed on the tip side of the auxiliary sheet 6B. Since the method for forming the protrusions 9 has already been described in detail, the description thereof is omitted here. On the buttock side from the auxiliary sheet 6B, the polymer 6A is exposed as it is.

  As described above, the outer buttock reinforcement pattern 6 includes the protrusion region L provided with the protrusion 9 from the heel side toward the buttock side, the auxiliary sheet region M in which the flexible fiber c is exposed, and the polymer. The bias region N in which 6A is exposed is arranged in that order, and the mating portion B is configured in a state in which the protrusion 9, the flexible fiber c, and the surface of the polymer 6A are in pressure contact with the other peripheral surface, respectively. .

[Another implementation structure]
(1) You may apply the object which comprises the match | combining part B to the upper center other than the former 10 and the former fence 11, etc.
(2) You may provide the position which forms the protrusion 9 in the internal peripheral surface of a large diameter housing.
(3) In order to form the protrusions 9, a molding method using a mold other than the spraying method may be used.
(4) The configuration of the present invention can be applied to a swing-type mountain stream ridge, ridge and the like.

Longitudinal side view showing a state where protrusions are provided on the mating part of the former and the former and the two are fitted together (A) is a perspective view showing a state before the main pattern and the reinforcing pattern are wound around the mandrel, (B) is a perspective view showing a state in which a protrusion is formed. (A) is a perspective view showing a state before winding the wound reinforcement pattern, (B) is a perspective view showing a state where the first prepreg tape is wound, (C) is the first and second main patterns. The perspective view which shows the state before winding A, (d) is a perspective view which shows the state before winding a 2nd prepreg tape and winding an outer buttock reinforcement pattern Longitudinal side view showing the fitting state between the top and the base rod by providing protrusions on the outer heel reinforcement pattern (A) is a perspective view showing a state before winding the mouth wound reinforcement pattern and the inner butt reinforcement pattern, (B) is a perspective view showing a state where the first prepreg tape is wound, and (C) is a first view. FIG. 1 is a perspective view showing a state before winding a second main pattern and an intermediate butt reinforcement pattern, and FIG. 4D is a perspective view showing a state where a second prepreg tape is wound. (A) is an enlarged cross-sectional view showing a cross-assembled state of reinforcing fibers of a cross-assembled prepreg of an auxiliary sheet, (b) is a vertical cross-sectional view of (a), and (c) shows a state before the auxiliary sheet is wound. Perspective view, (2) Longitudinal side view showing a state in which an auxiliary sheet is applied to the butt end portion and the original is pulled out (A) Perspective view showing a state before the protrusion and auxiliary sheet are applied to the bias area provided with the protrusion area, the auxiliary sheet area, and the bias area as the outer buttock reinforcement pattern (B) Longitudinal side view showing a state in which a protrusion area, an auxiliary sheet area, and a bias area are provided as the outer buttock reinforcement pattern, and the former is pulled out.

Explanation of symbols

6 Outer heel reinforcement pattern 9 Protrusion 10 Original (small-diameter frame)
9 Genroku (large-diameter frame)
B Joint part θ ₃ Inclination angle c Reinforcing fiber (flexible fiber)
X 竿 axis L protrusion area M auxiliary sheet area N bias area

Claims (4)

By a mating portion formed across the outer peripheral surface of the small-diameter housing and the inner peripheral surface of the large-diameter housing, the swing rod that holds the small-diameter housing and the large-diameter housing in an extended state,
The plurality of protrusions are formed on at least one peripheral surface of the outer peripheral surface or the inner peripheral surface so as to be in pressure contact with the counterpart peripheral surface to form the mating portion, and the one peripheral surface of the plurality of protrusions A protruding rod with different protrusion heights.   A lower prepreg in which a buttock reinforcement pattern is disposed outside the outermost layer of the small-diameter skeleton, and the buttock reinforcement pattern is aligned and arranged along an inclination angle at which the reinforcing fiber group is inclined with respect to the ridge axis; The reinforcing fiber group is configured by superimposing the reinforcing fiber group of the lower prepreg and the upper prepreg arranged so as to be symmetrical with respect to the saddle axis, and the plurality of the reinforcing fiber groups further outside the upper prepreg. 2. The swing rod according to claim 1, wherein a protrusion is provided.   An auxiliary sheet region formed by impregnating a matrix resin into a sheet-like material formed by combining flexible fibers with a cloth and exposing the flexible fibers, and a plurality of protrusions pressed against the other peripheral surface 3. The swing rod according to claim 1 or 2, wherein a protruding portion is formed with projection regions formed in different protruding heights, and the projection region is arranged on the buttock side with respect to the auxiliary sheet region.   A buttock reinforcement pattern is disposed on the outer side of the outermost layer of the small-diameter frame, and the buttock reinforcement pattern includes a bias region in which the upper prepreg and the lower prepreg are overlapped, and the plurality of protrusions having different heights. The protrusion region formed and the auxiliary sheet region combined with the flexible fiber, the protrusion region is disposed on the outermost layer of the small-diameter housing, and the auxiliary sheet region on the base side of the protrusion region The swing rod according to claim 1 or 2, wherein the bias region and the bias region are arranged in that order.

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