JP3045260U - Club-like fiber reinforced structure - Google Patents

Abstract

(57) [Abstract] [Problem] The stress concentration phenomenon at a specific part can be eliminated,
Provided is a fiber-reinforced structure of a club-like object which avoids screw cutting and improves the appearance of the club. SOLUTION: A main body 1 having a tubular shape having a predetermined length.
There are two. The reinforcing fiber bundles provided on the main body 12 also have a predetermined length and become parallel to each other. Each fiber bundle includes a first stage 41 extending along the longitudinal direction of the body and a second stage 42 extending at an appropriate angle from the longitudinal direction.
The second stage 42 forms a grid shape at an appropriate location on the body 12 in an overlapping or knitting and weaving manner. Then, the fiber bundles are respectively extended along a straight line or become a grid-shaped portion. So you can see a better appearance and reinforce the appropriate parts of the body according to your needs,
Useful for avoiding screw cutting.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a plastic club having a reinforcing fiber bundle, and more particularly to a club having a reinforcing fiber bundle which divides two stages at a predetermined angle.

[0002]

[Prior art]

 Conventionally, rods or tubes made of thermoplastic or thermosetting plastic as the main base material to improve strength, such as rackets, golf bats, bat bats, ski rods, suspension rods and bicycles For frames, etc., add an appropriate amount of reinforcing fiber bundles to the base of the club.

[0003] Normally, the state of the reinforcing fiber bundle adhering to the base material is shifted at an appropriate angle from the longitudinal direction of the base material and distributed like a spiral. It has a great effect of avoiding deformation and screw cutting. However, if such a structure is applied to daily necessities, the parts receiving the force are concentrated at the center of the racket, the middle stage of the bat, or both ends of the fishing rod, and the phenomenon of cutting off always occurs. Then, the plastic composite material is wrapped as a reinforcing fiber so as to increase the strength at a specific position.

[0004]

[Problems to be solved by the invention]

 However, the above method not only complicates the manufacturing process, but also increases the thickness and weight of the club due to the reinforcement. When it gets worse, the appearance of the fiber bundles that intersect in a repeating manner becomes messed up, so paint must be applied to the surface of the club for decoration.

Further, since there is no connection between the reinforcing fiber bundles, a large difference between the strength of the fiber bundle and the strength of the base material causes a phenomenon of stress concentration. As a result, the club always breaks. In order to solve this, ordinary manufacturers must add additional fiber bundle doses and cover the stress concentration points. However, not only does the cost rise, but the weight and outer diameter also increase significantly.

[0006] A main object of the present invention is to provide a club-shaped fiber reinforcing structure capable of eliminating a stress concentration phenomenon at a specific portion. Another object of the present invention is to provide a fiber-reinforced structure of a club-like object which has an effect of avoiding deformation and twisting. It is still another object of the present invention to provide a fiber-reinforced structure of a club-like object that improves the appearance of the club.

[0007]

[Means for Solving the Problems]

 The fiber-reinforced structure of the club-like material according to the present invention has a main body that has a tubular shape with a predetermined length. The reinforcing fiber bundles provided on the main body also have a predetermined length and become parallel to each other. Each fiber bundle includes a first stage extending along the longitudinal direction of the body and a second stage extending at an appropriate angle from the longitudinal direction. This not only gives a better appearance, but also helps to reinforce the appropriate parts of the body according to needs, and to avoid deformation and screw cutting.

[0008]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. First Embodiment First, as shown in FIGS. 1 to 3, a club-like object 10 according to a first embodiment of the present invention mainly includes a main body 12, a small first fiber bundle 14 provided on the main body 12, It is formed from two fiber bundles 16.

The main body 12 is manufactured using a thermoplastic or thermosetting plastic as a main substrate. It is a straight tube with appropriate length, thickness and center hole. In the case of actual application, a solid state may be adopted. The first fiber bundle 14 is made of a material having high strength and toughness, such as carbon fiber, boron fiber, glass fiber, titanium fiber, DYNEEMA fiber sold by the Dutch DSM Company, and KE VLAR fiber manufactured by DUPON USA. It is manufactured by. It is located on the outer circumference of the body 12 at a suitable distance along the circumference. The first step 41, the second step 42, and the third step 43 corresponding to the upper, middle, and lower portions of the main body 12 are formed by extending an appropriate length from the top to the bottom. The first stage 41 and the third stage 43 are installed along a direction parallel to the longitudinal direction of the main body 12, and the second stage 42 is installed so as to be shifted from the longitudinal direction of the main body 12 to a predetermined angle (+ α). The upper and lower ends are respectively joined to the corresponding portions of the former 41 and 43.

The second fiber bundle 16 is made of the same material as the first fiber bundle 14. It is also disposed on the outer periphery of the main body 12 at an appropriate distance along the circumference. Extending from top to bottom to a suitable length, a fourth step 64, a fifth step 65, and a sixth step 66 corresponding to the top, middle, and bottom of the body 12 are formed. The fourth step 64 and the sixth step 66 are installed along the direction of the longitudinal direction of the main body 12, and the fifth step 65 is installed so as to be shifted from the longitudinal direction of the main body 12 by a predetermined angle (-α). Further, since the fifth step 65 and the second step 42 have a tilt angle deviated from the longitudinal direction of the main body 12 and are often reversed, as shown in FIGS. An area called a grid is formed in the middle part of the main body 12 by the inner and outer superimposing methods.

Since the first fiber bundle 14 and the second fiber bundle 16 are continuously extended from top to bottom in each step, not only the main body is reinforced, but also there is no stress concentration phenomenon. . The grid area gives a more beautiful appearance. Due to the structure that is symmetrically extended to the left and right, the effect of avoiding screw cutting for the middle stage of the main body 12 is significantly improved.

Second Embodiment As shown in FIG. 4, after the first fiber bundle 14 and the second fiber bundle 16 are provided on the main body 12, the aesthetics of the club 10 are determined by a polishing method. When processing the surface, it can be said that it is usual to add a covering layer 18 having an appropriate thickness to the outer periphery of the club 10 so as not to impair both 14 and 16. The coating layer 18 may employ a transparent paint, or may cover the main body 12 with a transparent cloth or a glass cloth. At that time, the first fiber bundle 14 and the second fiber bundle 16 are often interposed between the outside of the main body 12 and the inside of the coating layer 18.

Third Embodiment As shown in FIGS. 5 and 6, nine first fiber bundles 14 and nine second fiber bundles 16 are respectively divided into two groups, A fiber bundle group 15 and a second fiber bundle group 17 are provided. The two 15 and 17 are arranged on the outer periphery of the main body 12 like a crossing arrangement, and form an area of four grids in the middle of the main body 12. Therefore, the difference is remarkably different from the direct arrangement structure of the single first fiber bundle 14 and the second fiber bundle 16 shown in FIG.

Fourth Embodiment As shown in FIG. 7, the structure of the club 10 has two main differences from those described above. One difference is that, when viewed from the direction of the drawing, the first fiber bundle 14 and the second fiber bundle 16 each have a seventh stage 47 and an eighth stage 68 that are extending downward to an appropriate length. Including. Both 47 and 68 are deviated from the longitudinal direction of the main body 12 to predetermined angles (+ β, −β), respectively, to form another grid area. Since the angles (+ β, −β) are different from the above (+ α, −α), the two grid areas also have different effects of avoiding deformation and thread breakage.

Another difference is that the first fiber bundle 14 and the second fiber bundle 16 weave the grid area in a cross-over manner. Then, the difference between the inner and outer mutual superposition methods shown in FIG. 1 can be clearly understood. (Fifth Embodiment) As shown in FIG. 8, the first stage 41 and the fourth stage 64 in the first fiber bundle 14 and the second fiber bundle 16 are extended along the longitudinal parallel direction of the main body 12. Although maintained in a state, the corresponding second stage 42 and fifth stage 65 are extended downward without fail, forming third stage 43 and sixth stage 66, respectively. However, since they are not arranged on the same line as the first stage 41 and the fourth stage 64, they are slightly different as compared with the structure shown in FIG.

Fifth, Sixth, and Seventh Embodiments As shown in FIGS. 9, 10, and 11, they arrange fiber bundles in different layouts to form different club 10 structures. I do. Mainly, the position and quantity of the first stage 41, the fourth stage 64 or the second stage 42 and the fifth stage 65 are changed or increased or decreased according to actual needs. In the case of FIG. 9, the first fiber bundle 14 and the second fiber bundle 16 are extended along the same inclination direction by the two grids in the upper and lower stages of the club 10, and are slightly different from those in FIG. Become. After all, the effect of reinforcement is the same as in the previous embodiment, but a visual effect with a different appearance can be obtained. In the case of FIG. 10, it is emphasized that the present invention can be applied to a straight tubular main body 12 and also to a cone shape. In the case of FIG. 11, in addition to the cone shape, there is a projecting portion having a larger outer diameter from the main body 12, so that there is an effect of shock absorption. That is, since the grid areas of the first fiber bundle 14 and the second fiber bundle 16 are provided at the protruding portions, the effect of receiving vibration while strengthening the portions is also obtained.

[Brief description of the drawings]

FIG. 1 shows a fiber-reinforced structure of a club-like object according to a first embodiment of the present invention, wherein (A) is a front view,
(B) is a locally enlarged view of the second stage of each fiber bundle.

FIG. 2 is a sectional view taken along line 2-2 of FIG.

FIG. 3 is a sectional view taken along line 3-3 of FIG.

FIG. 4 is a cross-sectional view taken along line 2-2 of FIG. 1A, showing a fiber-reinforced structure of a club-like object according to a second embodiment of the present invention.

FIG. 5 is a front view illustrating a fiber-reinforced structure of a club-shaped object according to a third embodiment of the present invention.

FIG. 6 is a sectional view taken along line 6-6 in FIG. 5;

FIG. 7 shows a club-shaped fiber reinforcing structure according to a fourth embodiment of the present invention, wherein (A) is a front view,
(B) is a locally enlarged view of the second stage of each fiber bundle.

FIG. 8 is a front view illustrating a fiber-reinforced structure of a club-shaped object according to a fifth embodiment of the present invention.

FIG. 9 is a front view showing a fiber-reinforced structure of a club-shaped object according to a sixth embodiment of the present invention.

FIG. 10 is a front view showing a fiber-reinforced structure of a club-like object according to a seventh embodiment of the present invention.

FIG. 11 is a front view showing a club-shaped fiber reinforcing structure according to an eighth embodiment of the present invention.

[Explanation of symbols]

 10 club 12 main body 14 first fiber bundle 16 second fiber bundle 41 first stage 42 second stage 43 third stage 64 fourth stage 65 fifth stage 66 sixth stage

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[Procedure amendment]

[Submission date] September 5, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims for utility model registration

[Correction method] Change

[Correction contents]

[Utility model registration claims]

Claims (11)

[Utility model registration claims] 1. A club having a reinforcing fiber bundle, wherein the main body is a straight tube or a cone-shaped club, and some first fiber bundles have a predetermined length and are parallel to each other. A fiber reinforcement for a club-like object, wherein each first fiber bundle has a first stage extending along a straight line and a second stage extending along an inclined direction. Construction. 2. The method according to claim 1, further comprising adding a second fiber bundle, wherein each second fiber bundle has a fourth step extending along a straight line and a fifth step extending along an inclined direction. Item 7. A fiber-reinforced structure for a club-like object according to Item 1. 3. The fiber-reinforced structure for a club-shaped object according to claim 2, wherein the fourth and fifth steps form an area called a grid by overlapping the corresponding portions inside and outside. 4. The club-shaped fiber reinforcing structure according to claim 2, wherein the fourth and fifth steps may form an area called a grid by intersecting corresponding portions. 5. The method according to claim 2, further comprising a third step extending in a direction parallel to the longitudinal direction of the first and second fiber bundles and a sixth step extending in an inclined direction.
The fiber-reinforced structure of the club-like material described. 6. The fiber-reinforced structure for a club-like object according to claim 1, wherein the first step and the third step extend along the same linear direction. 7. The method according to claim 2, further comprising adding a transparent covering calendar to the outer periphery of the club, wherein the first fiber bundle and the second fiber bundle are interposed between the main body and the covering. Club-shaped fiber reinforced structure. 8. The fiber reinforcing structure for a club-like object according to claim 2, further comprising a seventh step and an eighth step which are further extended at a slant angle from the longitudinal direction. 9. The tilt angle of the seventh step and the eighth step shifted from the longitudinal direction of the main body is different from the shifted tilt angle of the second step and the fifth step. Club-shaped fiber reinforced structure. 10. The club according to claim 2, wherein some first fiber bundles form a first fiber bundle group and some second fiber bundles form a second fiber bundle group in parallel. Fiber reinforced structure. 11. A projecting portion having a larger outer diameter than a predetermined portion of the main body, wherein the second and fifth steps form a grid area in the projecting portion in an intersecting manner. The fiber-reinforced structure for a club-like object according to claim 2, characterized in that: