JPS6310269Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a composite material molded product in which a hollow columnar structure is impregnated with a matrix resin and cured using reinforcing fiber threads.

For example, as shown in FIG. 1, the composite material molded product of the present invention is made of reinforcing fiber yarns of the same type or different types for one group of warp yarns consisting of reinforcing fiber yarns arranged with different diameters in the length direction. The hollow columnar composite material molded product is obtained by winding the weft threads 2 into a columnar shape while appropriately intersecting with the warp threads 1, and impregnating the obtained hollow columnar structure with a thermosetting resin or a thermoplastic resin, respectively. .

Figure 2 is a cross section of the hollow columnar composite material molded product of the present invention, as seen from the direction of the larger diameter, and is obtained by intersecting warp threads 1 and weft threads 2 as appropriate. A matrix resin 3 is placed around the structure in close contact with the warp threads 1 and the weft threads 2 to sufficiently repel the properties of the composite material, and the inner wall 4 has different diameters in the length direction like the outer wall. A composite material molded product made with diameters varying in the longitudinal direction is very advantageous when making a long rod, such as a fishing rod, by sequentially adding tubes of a certain length. That is, when inserting and connecting a longer-diameter tube with a slightly shorter-diameter tube, it is not necessary to make large cuts in both tubes to make them match, and the insertion and connection can be made by cutting the matrix resin portion on the surface. Therefore, the strength of the joint portion is ensured without damaging the reinforcing fiber structure. In addition, the structure made of the reinforcing fiber yarn is so strong that it not only provides reinforcement in the vertical direction but also in the circumferential direction of a hollow columnar object.For example, when making a conventional fishing rod, the reinforcing fiber is There is no need for complicated operations such as arranging impregnated sheets in one direction and winding them around the core and then rolling up other sheets or fabrics in a 90° direction.This eliminates the possibility of quality defects in the rod due to mistakes in the molding process. It can be drastically reduced. Furthermore, in contrast to the conventional fishing rod described above, where the sheet is rolled up in many layers, the rod needs to be thicker than a certain level, whereas with the composite material molded product using the structure of the present invention, all parts Since the threads are continuous and there are no joining points, a sufficient reinforcing effect can be obtained even with one layer of the structure, and the effect will be dramatically increased if two or more layers of structures with different diameters are laminated.

[Brief explanation of drawings]

Fig. 1 is a perspective external view of a hollow columnar structure constructed by reinforcing fiber threads having different diameters in the length direction, which are formed by appropriately intersecting a group of warp threads and a weft thread 2 according to the present invention. 2 is a sectional view of a hollow columnar composite material molded product obtained by impregnating the structure shown in FIG. 1 with a matrix resin.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) Reinforcing fiber yarn obtained by winding a group of warp yarns arranged in a hollow column shape so that the diameters differ in the length direction while the weft yarns intersect with the warp yarns as appropriate. A hollow columnar composite material molded product obtained by impregnating a matrix resin into a structure consisting of strips and curing it. (2) The composite material molded product according to claim 1, wherein the hollow columnar composite material molded product is a fishing rod.