JPH04331135A - Honeycomb cylindrical body - Google Patents

Abstract

PURPOSE:To form a honeycomb layer 39 having a simple shape easily and positively regarding a honeycomb cylindrical body mainly used for lightening in sporting goods such as a fishing rod, a golf club, and airplanes including gliders. CONSTITUTION:A honeycomb layer 39 is constituted by winding both edge sections on an internal layer under a superposed state in a honeycomb tape 45, in which both edge sections are tilted at a fixed angle to an axial length wall.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a honeycomb-shaped cylindrical body used mainly for weight reduction in sports equipment such as fishing rods and golf shafts, and airplanes such as gliders.

0002

[Prior Art] Conventionally, in order to reduce the weight without reducing the strength of fishing rods, for example,
As disclosed in Japanese Patent No. 74, a structure in which a honeycomb layer is formed between an inner layer and an outer layer is known. Figure 8 shows
This figure shows a honeycomb-shaped cylindrical body disclosed in this publication, and in this honeycomb-shaped cylindrical body, a honeycomb layer 15 is formed between an inner layer 11 and an outer layer 13.

Conventionally, such a honeycomb layer 15 has been formed by bending a honeycomb-shaped sheet 23 in which a large number of honeycombs 21 are formed by an axial wall 17 and a circumferential wall 19, for example, as shown in FIG. , by wrapping it around the outside of the inner layer 11.

0004

However, in such a conventional honeycomb-shaped cylinder, the honeycomb-shaped sheet 23
When bent, the circumferential wall 19 deforms into a fan shape as shown in Figure 10, and tensile stress acts on the outside and compressive stress acts on the inside, so the repulsive force at this time is large and the winding work is extremely difficult. There was a problem with becoming.

[0005] Furthermore, it is difficult to reliably join both ends of the honeycomb sheet 23, and as shown in FIG. However, there was a problem in that it was difficult to obtain a predetermined external shape. The present invention was made in order to solve such conventional problems, and an object of the present invention is to provide a honeycomb-shaped cylindrical body that can easily and reliably form a honeycomb layer with a uniform outer shape.

[0006]

[Means for Solving the Problems] The honeycomb-shaped cylindrical body of the present invention has a honeycomb layer formed of a large number of honeycombs formed by an axial wall and a circumferential wall on the outside of a cylindrical inner layer, and In a honeycomb-shaped cylindrical body in which an outer layer is formed on the outside of the honeycomb layer, and the inner layer, the honeycomb layer, and the outer layer are integrally formed, the honeycomb layer is formed at both edges with respect to the axial wall. It is formed by winding a honeycomb-shaped tape whose edges are inclined at a predetermined angle around the inner layer with the edges overlapped.

[0007]

[Operation] In the honeycomb-shaped cylinder of the present invention, a honeycomb-shaped tape whose both edges are inclined at a predetermined angle with respect to the axial wall,
Since the honeycomb tape is wound around the inner layer, the number of circumferential walls formed in the honeycomb tape is reduced, and the repulsive force during winding is reduced. Furthermore, since the honeycomb tape is wound around the inner layer with its edges in a polymerized state, the seams are not noticeable.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, details of the present invention will be described with reference to an embodiment shown in the drawings. 1 and 2 show details of the honeycomb layer of FIGS. 3 and 4, and FIGS. 3 and 4 show an embodiment of the honeycomb-shaped cylinder of the present invention. In FIGS. 3 and 4, reference numeral 31 indicates a cylindrical inner layer.

On the outside of this inner layer 31, as shown in FIGS. 1 and 2, a honeycomb layer 39 is formed in which a large number of honeycombs 37 are formed by an axial wall 33 and a circumferential wall 35. An outer layer 41 is formed outside this honeycomb layer 39, and the inner layer 31, honeycomb layer 39, and outer layer 41 are integrally formed.

[0010] However, in this embodiment, the honeycomb layer 3
As shown in FIGS. 1 and 2, a honeycomb tape 45 having both edges 43 inclined at a predetermined angle with respect to the axial wall 33 is wound around the inner layer 31 with the edges 43 overlapped. It is formed by turning. That is, the honeycomb-shaped tape 45 is, for example, a honeycomb-shaped sheet 47 as shown in FIG.
It is formed by cutting at a predetermined width so as to be inclined at a predetermined angle θ with respect to the axial wall 33.

[0011] Furthermore, this honeycomb-shaped tape 45 is shown in FIG.
And as shown in FIG. 6, the inner layer 31 is wound around the inner layer 31 so that the edge 43 of the axial wall 33 is in an overlapping state. The honeycomb-shaped cylindrical body configured as described above is, for example,
It is manufactured as described below. That is, first, in order to form the inner layer 31, a prepreg sheet made of high-strength fibers such as carbon fibers and glass fibers impregnated with a synthetic resin such as epoxy resin is wound around a core metal.

[0012] After this, on the outside of this prepreg sheet,
A honeycomb tape 45 is wound as shown in FIG. In this embodiment, adhesive sheets made of thin film sheets are adhered to both sides of the honeycomb tape 45. After this, a prepreg sheet made of high-strength fibers such as carbon fibers and glass fibers impregnated with a synthetic resin such as epoxy resin is wound on the outside of the wound honeycomb tape 45 to form an outer layer 41. be done.

[0013] Thereafter, a predetermined honeycomb-shaped cylindrical body is manufactured through a taping process, a firing process, etc. However, in the honeycomb-shaped cylinder configured as described above, the honeycomb layer 3
9 is formed by winding a honeycomb-shaped tape 45 whose both edges 43 are inclined at a predetermined angle with respect to the axial wall 33 around the inner layer 31 with the edges 43 overlapped. It becomes possible to form the honeycomb layer 39 easily and reliably.

That is, in the honeycomb-shaped cylinder constructed as described above, the honeycomb-shaped tape 45 whose both edges 43 are inclined at a predetermined angle θ with respect to the axial wall 33 is attached to the inner layer 3.
1, the number of circumferential walls 35 formed on the honeycomb tape 45 is reduced, the repulsive force during winding is reduced, and the honeycomb tape 45 is wound on the outside of the inner layer 31.
can be easily and reliably wound, and a highly strong honeycomb layer 39 with a uniform outer shape can be easily and reliably formed.

[0015] Also, the honeycomb tape 45 is attached to the edge 43.
Since it is wound around the inner layer 31 in a polymerized state, the seams are not noticeable and it is possible to obtain a honeycomb-shaped cylinder with a uniform external shape and high strength. FIG. 7 shows another example of a honeycomb-shaped sheet for obtaining a honeycomb-shaped tape. In this example, the honeycomb-shaped tape is obtained by cutting the honeycomb 51 of the honeycomb-shaped sheet 49 diagonally, and 33 at a predetermined angle θ.

[0016] In the embodiments described above, an example was explained in which the honeycomb shape was a square shape, but the present invention is not limited to such embodiments, and for example, the honeycomb shape may be made into a hexagonal shape. Of course. In addition, in the embodiment described above, an example was explained in which the honeycomb-shaped tape 45 had the same width, but the present invention is not limited to such an embodiment. For example, in the case of a complicated tapered shape, etc. Of course, the cutting angle, tape width, etc. may be changed depending on the shape.

Furthermore, in the embodiments described above, the outer layer 4
Although an example in which 1 is a high-strength fiber layer has been described, the present invention is not limited to such an example. For example, when considering ease of grip, the layer may be formed of resin, plaster, etc. Furthermore, when it is necessary to ensure strength etc., it is of course possible to form it from a hard metal or the like.

[0018]

As described above, in the honeycomb-shaped cylinder of the present invention, it is possible to easily and reliably form a honeycomb layer with a uniform external shape. It has the advantage of being able to obtain

[Brief explanation of drawings]

1 is a perspective view showing details of the honeycomb layer of FIG. 3; FIG.

FIG. 2 is an explanatory diagram showing an enlarged view of the honeycomb layer in FIG. 1;

FIG. 3 is a cross-sectional view showing an embodiment of the honeycomb-shaped cylinder of the present invention.

FIG. 4 is a longitudinal sectional view showing an embodiment of the honeycomb-shaped cylinder of the present invention.

5 is a perspective view showing an example of a honeycomb-shaped tape used for forming the honeycomb layer of FIG. 1. FIG.

FIG. 6 is an explanatory diagram showing the state of the honeycomb layer in FIG. 1 before polymerization.

FIG. 7 is a perspective view showing another example of a honeycomb tape.

FIG. 8 is a sectional view showing a conventional honeycomb-shaped cylinder.

FIG. 9 is an explanatory diagram showing a conventional method for wrapping a honeycomb sheet.

FIG. 10 is an explanatory diagram showing the state of stress during winding of a conventional honeycomb sheet.

[Explanation of symbols]

31 Inner layer 33 Axial wall 35 Circumferential wall 37 Honeycomb 39 Honeycomb layer 41 Outer layer 43 Edge 45 Honeycomb tape

Claims (1)

[Claims] 1. A honeycomb layer in which a large number of honeycombs are formed by an axial wall and a circumferential wall is formed on the outside of a cylindrical inner layer, and an outer layer is formed on the outside of this honeycomb layer, In a honeycomb-shaped cylindrical body formed by integrally forming an inner layer, a honeycomb layer, and an outer layer, the honeycomb layer is covered with a honeycomb-shaped tape having both edges inclined at a predetermined angle with respect to the axial longitudinal wall. A honeycomb-shaped cylindrical body characterized in that it is formed by winding the inner layer in a polymerized state.