EP1001831A1

EP1001831A1 - Tube and golf club with handle made of said tube

Info

Publication number: EP1001831A1
Application number: EP98934732A
Authority: EP
Inventors: Silvano Zorzi
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-08-05
Filing date: 1998-08-03
Publication date: 2000-05-24
Anticipated expiration: 2018-08-03
Also published as: EP1001831B1; JP2001513458A; ATE254491T1; DE59810229D1; WO1999007446A1; CA2300300A1; JP4253118B2; CA2300300C; ES2210780T3; US6514156B1

Abstract

The invention concerns a tube (6) comprising a wall consisting of several layers (2; 3;, 5; 4). Inside the tube (6) wall are found frame wires (3) extending longitudinally. Inside and/or outside said longitudinal frame wires (3) is arranged at least one layer (2, 4) wound around the tube (6) periphery.

Description

Pipe and golf club with shaft from this tube

The invention relates to a tube according to the preamble of independent claim 1 and to a golf club

Pipes are known which are produced by pulling metal, or by winding mats made of fiber-reinforced synthetic resin materials, or by winding fibers.These pipes are relatively light but have a rather massive bending elasticity.The pipes have poor vibration-damping properties.The damping properties must be retrofitted can be improved by installing or attaching steaming elements All these pipes have insufficient steaming properties for certain applications

Conventional shafts of golf clubs are, for example, either drawn metal tubes or tubes wound from fiber materials. Metal tubes are characterized by good elasticity, but have a relatively high weight and poor damping properties insufficient for many applications The steaming properties of conventionally manufactured pipes Fiber materials such as pulling or winding are hardly sufficient and therefore have to be installed later

The present invention has for its object to provide a tube of high elasticity, good torsional behavior and low weight. At the same time, the tube is said to have good vibration-damping properties. It is also an object of the present invention to provide a golf club with a shaft that has high elasticity and good torsional rigidity and light in weight

This object is achieved according to the invention with a tube which has the features of independent claim 1. The dependent claims relate to advantageous embodiments of the tube. The golf club according to the invention has a shaft made of a tube according to the invention

The wires can be made of metal, carbon fiber, glass or Kevlar, for example. The wires can be individual wires, but the structure of these wires can also be stranded, or the wire can be a braid. For example, wires such as those are suitable can be used for piano strings It is also conceivable to use wires made of different materials and / or with different structures in one tube. The wires themselves can in turn be tubular or tubular. The wires advantageously have a diameter of about 0 2 mm to 0 5 mm, although wires with other diameters are of course also suitable

A Ronr according to the invention can be produced, for example, as follows: A first fiber layer is wound onto a winding body, such as a winding mandrel winds the winding mandrel This first winding layer or wound layer can be coated with a synthetic resin The long wires can then be placed on the wound layer. The long wires can in turn be coated with synthetic resin and embedded in them. The long wires can therefore form a long wire layer together with the synthetic resin in between Long wires are applied until the pipe has the correct structure If an only loosely wound layer lies over a wire layer and further wires are placed on this loosely wound layer so that the wires of the second layer of long wires lie between those of the first layer of long wires, the longitudinal wires of the first and second layers can be brought together to form a layer with another hard-wound layer. The loosely wound layer then runs in a wave-like manner around the longitudinal wires of this combined layer The loosely wound layer can run alternately over one wire and under the next adjacent wire. However, it is also conceivable that the loosely wound layer runs over and under more than one adjacent longitudinal wire. A large number of structures are conceivable here

The tube according to the invention has the necessary properties such as high elasticity, high torsional strength, low weight, which are necessary, for example, for the shaft of a golf club. In addition, the vibration-damping properties can be changed if necessary with simple means and measures by at certain points in the or steaming elements can be inserted or attached around the pipe. Foam materials are suitable as damping elements. Granules made of elastomer, such as latex, can be used in the interior of the pipe. The granules can be embedded in a foam

The tube according to the invention is extremely resistant to bending and kinking, that is to say it has good resistance to bending. In addition, the tube has very good tensile properties The invention is explained in more detail below with reference to the exemplary embodiments shown in the schematic drawings

Show it

1 shows a cross section through a tube,

2 shows a side view of a conical tube,

2a shows a cross section along the line AA through the tube of FIG. 2,

3 shows a golf club with a conical tube

4 shows a cross section through a further tube,

Fig. 5 a to c details of different types of construction of the

Rohres,

6 a to f different shapes of the cross section of pipes

7 a to d different shapes of the profile of pipes,

Fig. 9 three cross sections through the tube, each with a full body made of foam, each in a different position

Fig. 10 in schematic cross sections of different types of

Wires and arrangements of the wires, as well as cross-sections through a tube in various manufacturing steps Metal wires 3, preferably made of spring steel or titanium, in the longitudinal direction of the tube 6 from FIG. 1, are arranged on a radius R around the center of the tube 6 with the increase in the radius R also increases

The core of the tube 6 can be made of a foam 1 and can also serve as a support core for the first wound fiber material zone 2. This foam core 1 also serves at the same time for damping the vibrations. The effect of the damping can be increased further by

Damping body 9, preferably rubber granules, are stored in the foam core 1, as shown in FIG. 4. The tube 6 can also be completely filled with a damping body

Any windable fiber, wire or thread-like material such as glass fiber, carbon fiber, Kevlar, textile thread, plastic thread or filament thread can be used as the fiber materials for the wound layer

The first fiber material zone 2, preferably carbon fibers, is wound together with an adhesive onto the foam core 1 or a winding mandrel, FIG. 1

The metal wires 3, Fig. 1 follow the fiber material zone 2. Several layers of metal wires 3 are also possible. These metal wires 3 are attached with special devices. These devices and the method are described in more detail later. Several fiber material zones and / or zones with metal wires can be in the wall In a next step, the fiber material zone 4 is wound over the metal wires 3 with an adhesive, FIG. 1.

The space between the fiber material zones 2 and 4 and between the metal wires 3 is filled by the adhesive As described above, the entire tube 6 is produced step by step and in a single, uninterrupted process. After the adhesive has hardened, the tubes 6 are still assembled, ie cut to length, printed, etc.

Depending on the number of metal wires 3, the outer contour of the tube 6 can be made round as a polygon or wave-shaped, Fig. 5a to c. The wave-shaped outer contour, as shown in Fig. 5c, can be obtained, for example, with a molding tool in which the tube is cured

Since the tubes 6, for example in a golf club, are only subjected to torsion in a preferred direction, the fiber material zones 2 and 4 can be wound in one direction, preferably together with the use of metal wires 3, this results in a slim design and thus a large saving in fiber materials

The tubes 6 can also be designed without a foam core 1. If the foam core is omitted, then a special removable mandrel can be used for the winding

The tube cross-sections can be designed in any way. FIGS. 6a to f show only a few examples. FIG. 6a shows a circular cross-section. FIG. 6b shows an oval or elliptical cross-section square cross-section Fig. 6f finally shows a parallelepiped-shaped cross-section

The tubes 6 can also be designed differently in the longitudinal direction. FIG. 7 shows some examples. FIG. 7a shows a schematic cross section conical tube, Fig. 7b a cylindrical tube, Fig. 7c a concave and Fig. 7d a convex or barrel-shaped tube

As shown in the longitudinal view of FIG. 2, the wall thickness of the tube 6 can be constant over the entire length I or it can taper distributed over the length I.

If the tube 6 is to have a high torsional moment of resistance, that is to say high resistance to twisting, the metal wires 3 can also be installed in the wall twisted / twisted relative to the longitudinal direction of the tube 6, which is illustrated schematically in FIG. 8

Instead of metal wires 3, fiber materials could also be used

The steaming means, for example a foam core 1 or the foam core 1 with embedded steaming bodies 9, such as rubber granules, can also be applied only partially over the length I, which is illustrated schematically in FIG. 9 Structure and / or available in different materials

In FIG. 10 a, the longitudinal wires themselves are formed as tubes. Long wires with a strand structure are shown in FIG. 10 b. FIG. 10 d shows the structure of a tube in which a winding layer 10 alternately wraps around the longitudinal wires inside and out 10c shows the loosely wound winding layer 10 lies on the inner wires 3 and on the winding layer 10 the outer wires 3 lie. If the subsequent outer winding layer 4 is hard wound, the wires 3 will wipe into the layer of the outer winding layer zone 4 and the inner winding layer zone 2, as shown in FIG. 10 d. The wires 3 could also be used with a Be pressed into a layer 3 between the outer winding layer zone 4 and the inner winding layer zone 2. It is also possible to arrange the wires 3 on the inside and outside so that the wires lying on the inside and outside in relation to the winding layer 10 lie on different radii R, ie they are at different distances from the center of the tube.

Fig. 10 e shows schematically the arrangement of the wires 3 in three groups, which are distributed over the circumference. Finally, FIG. 10 f shows an arrangement of wires 3 in four groups, which are arranged at different angular distances from one another. All groups are equidistant from the central axis of the pipe. The groups of longitudinal wires could also have different distances from the central axis.

List of reference numerals:

1 foam core

2 first fiber material zone

3 metal wire

4 second fiber material zone

5 glue

6 pipe

7 club head

8 handle

9 damping body

10 additional fiber material zones

Claims

claims

1 tube (6) with a wall which is composed of several layers (2, 3, 5, 4), characterized in that longitudinally extending wires (3) are arranged in the wall, and that in the wall of the

Tube, inside and / or outside of the wires (3) at least one layer (2, 4) wound over the circumference of the tube is present

2 tube (6) according to claim 1, wherein the longitudinal wires at a distance R from the center of the tube (6), preferably arranged in a circle at equal distances from each other

3 tube (6) according to claim 1 or 2, manufactured as a winding body, with at least one damping element (1) made of vibration-damping material in the interior of the tube (6)

4 tube (6) according to one of claims 1 to 3, with a circular, elliptical, oval, teardrop-shaped, egg-shaped, rectangular, square, parallelepiped-shaped or polygonal cross section

5 tube (6) according to claim 4, with a polygonal cross section in which the wires (3) determines the outer contour of the tube (6) and in the region of each corner edge of the tube (6) runs a wire (3)

6 pipe (6) according to one of claims 1 to 5, with a longitudinally changing cross-section and / or a longitudinally changing wall thickness (S)

7 tube (6) according to any one of claims 1 to 6, wherein the in the wall of the tube, longitudinally arranged wires (3) at an angle to

Surface line, in particular spiral (Fig. 8) Pipe (6) according to one of claims 1 to 7 with a plurality of layers (3, 5) of wires (3) which run lengthwise

Pipe (6) according to one of claims 1 to 8, wherein one of the winding layers (10) wraps around the longitudinal wires (3) in one layer relative to the pipe wall, partly inside and partly outside, preferably alternately inside and outside (Fig 10d)

Pipe (6) according to any one of claims 1 to 9, characterized in that the wires (3) extending longitudinally in the wall of the pipe (6) consist of metal, plastic, carbon fiber, glass or a textile material, or that in the wall longitudinal wires (3) made of various of these materials are present

Pipe (6) according to one of claims 1 to 10, with longitudinal

Wires (3) which are strand-like, braided, cable-shaped, tube-shaped, tubular-strand-shaped

Golf clubs with a shaft from a tube according to one of the

Claims 1 to 1 1 (Fig 3)

Use of a tube (6) according to one of claims 1 to 1 1 as a ski pole, as a component in a framework, in an aircraft, such as an aircraft, or a delta slope glider, a vehicle for space travel, in a road vehicle such as an automobile, a motorcycle or a bicycle, in a rail vehicle or in a watercraft