CN1350875A - Shafts of golf clubs and manufacture thereof - Google Patents
Shafts of golf clubs and manufacture thereof Download PDFInfo
- Publication number
- CN1350875A CN1350875A CN01125889A CN01125889A CN1350875A CN 1350875 A CN1350875 A CN 1350875A CN 01125889 A CN01125889 A CN 01125889A CN 01125889 A CN01125889 A CN 01125889A CN 1350875 A CN1350875 A CN 1350875A
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- Prior art keywords
- metal tube
- reinforced plastic
- plastic layer
- peripheral surface
- inner peripheral
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Abstract
To provide an inexpensive golf club shaft whose metal pipe is reinforced with a fiber reinforced plastic layer, preventing the fiber reinforced plastic layer from being easily peeled off from the metal pipe and preventing the reinforcing fibers from easily splitting in the longitudinal direction. The fiber reinforced layer is formed along the inner surface inside the metal pipe and fixed to the inner surface of the metal pipe. The resin impregnation rate of the fiber reinforced plastic layer is preferably at least 24% by weight. The shaft is manufactured by disposing a cylindrically wound prepreg inside the metal pipe and fusing the outer surface of the pre-preg to the inner surface of the metal pipe by heating the prepreg with gas pressure while the prepreg is pressurized against the inner surface of the metal pipe.
Description
Technical field
The present invention relates to a kind ofly increases the bar handle of the intensity of metal tube with fiber-reinforced plastic layer, can prevent that particularly splitting takes place between metal tube and the fiber-reinforced layer and fiber-reinforced plastic layer is impaired or cracking and can make the bar handle and the manufacture method thereof of the golf clubs that manufacturing cost reduces.
Background technology
It is main in the bar handle of golf clubs that what use is with the metallic rod handle of metal tube manufacturing and the nonmetal bar handle etc. that merges the fibre reinforced plastic tube manufacturing that forms with multilaminate coiled pre impregnated material through heating each other, and the former is owing to being steel pipe etc., so cheap.But,, must use thick-walled pipe, thereby weight is heavier with certain wall thickness from intensity.By comparison, it is light that latter's weight is wanted, but owing to will use expensive pre impregnated material, so the price height.
For this reason, the someone has proposed only to utilize the two the hybrid bar handle of strong point of metallic rod handle and nonmetal bar handle.This bar handle is to make weight saving by the wall thickness that reduces metal tube, the reduction of the metal tube intensity that produces along with weight saving, strengthen by pasting fiber-reinforced plastic layer with bonding agent at its outer peripheral face, make the use amount of pre impregnated material reduce in (real public clear 50-8685 communique, real fair 5-34672 communique).
But, this hybrid bar handle and nonmetal bar handle are same, its fine finishining need be ground, application etc., so just fee of material reduction on the price, and, aspect quality, exist fiber-reinforced plastic layer easily from the metal tube sur-face peeling, and fiber-reinforced plastic layer shortcoming such as on the length direction of the fiber of pre impregnated material, ftracture easily.
The purpose of this invention is to provide a kind of with fiber reinforcement plastic layer increase bar handle and the manufacture method thereof that has overcome the golf clubs of above-mentioned shortcoming in the bar handle of metal tube intensity.
Summary of the invention
The feature of the bar handle of golf clubs of the present invention is along inner peripheral surface fiber-reinforced plastic layer to be set in the inside of metal tube, and to be fixed on the inner peripheral surface of metal tube.Here, preferably, the resin impregnation rate of fiber-reinforced plastic layer is more than the 24 weight %.In addition, the feature of the manufacture method of this bar handle is, be wound into the pre impregnated material of tubular in the internal configurations of metal tube, and under the state on the inner peripheral surface that pre impregnated material is pressed in metal tube by gas pressure, heat, thereby the outer peripheral face of pre impregnated material is merged on the inner peripheral surface of metal tube.
As mentioned above, as hybrid bar handle of the present invention, because with the inner peripheral surface setting of fiber-reinforced plastic layer along metal tube, and stick on the inner circumferential surface and form, therefore, metal tube exposes, and outward appearance is identical with the metallic rod handle.Therefore, as metal tube,, needn't grind with application during fine finishining etc., so manufacturing cost can correspondingly reduce if use in the past the thin metal tube of the employed wall of metallic rod handle.In addition, fiber-reinforced plastic layer is covered by metal tube, and its distortion is subjected to the restriction of metal tube, therefore, is difficult for peeling off from the inner peripheral surface of metal tube, is difficult for ftractureing on the length direction of fortifying fibre.Particularly, if the resin impregnation rate of fiber-reinforced plastic layer is more than the 24 weight %, can make and metal tube between adaptation good.Have again, if will being rolled into the pre impregnated material of tubular, employing is configured in metal tube inside during manufacturing, under the state on the inner peripheral surface that pre impregnated material is pressed in metal tube by gas pressure, heat and make outer peripheral face fusion a kind of like this method on the metal tube inner peripheral surface of pre impregnated material, then pre impregnated material is pressed against on the metal tube inner peripheral surface and undertaken by gas pressure, therefore, pre impregnated material can be urged on whole metal tube inner peripheral surface.In addition, pre impregnated material is by merging on the metal tube inner peripheral surface heating under this state, and therefore, formed fiber-reinforced plastic layer driving fit is on whole metal tube inner peripheral surface.
Description of drawings
Fig. 1 illustrates an example of golf club handle of the present invention, is the stereogram of bar handle (A), (B) is the longitudinal sectional view of bar handle shown in (A).
Fig. 2 is illustrated in employed plug in the manufacturing of golf club handle of the present invention, is the stereogram of plug (A), (B) is the longitudinal sectional view of cutting open along center line of plug shown in (A).
Fig. 3 is the stereogram when putting sleeve pipe on plug shown in Figure 2.
Fig. 4 is the stereogram during the coiling pre impregnated material on being with the plug of sleeve pipe.
Fig. 5 is the stereogram when being inserted in the plug that the pre impregnated material coiling is in the metal tube.
Fig. 6 illustrates the pre impregnated material method that the plug be over heats of reeling, and has omitted mid portion.
Fig. 7 illustrates the golf club handle made from embodiment, is the stereogram of bar handle (A), (B) is the longitudinal sectional view of bar handle shown in (A).
The working of an invention form
Fig. 1 illustrates golf club handle of the present invention, in the inside of metal tube 1, along the inner peripheral surface setting and be pasted with fiber-reinforced plastic layer 2.
Here, as metal tube 1, can be from root to the tapered steel pipe that attenuates in end, but preferably, as the metallic rod handle at the power on metal of nickel plating or chromium and so on of outer peripheral face, to improve corrosion resistance and aesthetic property.The stickup of fiber-reinforced plastic layer 2 on the inner peripheral surface of pipe can realize by bond layer, but if make it to merge on inner peripheral surface with resinous principle, can increase its bonding force.For the inner peripheral surface of pipe, for improve and fiber-reinforced plastic layer 2 between cementability, preferably in advance with surface roughening, perhaps implement such as chemical treatments such as phosphate treated or chromate processing.
Fiber-reinforced plastic layer 2 be in resin composite fibre increase and increase its intensity the layer; As resin, can list epoxy resin, phenolic resins, unsaturated polyester resin etc.; As fiber, can list carbon fibre, glass fibre, boron fibre, the such high strength fibre of aromatic species Fypro.This fiber-reinforced plastic layer 2 both can be to be made of identical on the whole individual layers such as the kind of the kind of fiber and orientation thereof, resin and impregnation rate thereof, also can be to form by the stacked multilayer of above-mentioned key element material inequality, but if the outer field resin impregnation rate less than 24 weight %s of fusion on side face within the metal tube 1, then stick on occasion on the metal tube inner peripheral surface in fusion by fiber-reinforced plastic layer 2, the resin that is oozed out during heating is less, causes bonding abundant inadequately with the inner peripheral surface of pipe.Therefore, preferably, the outer field resin impregnation rate of fiber-reinforced plastic layer 2 is more than the 24 weight %.
For bar handle of the present invention, if adopt with pre impregnated material insert overlay in the metal tube 1 and with it after, pre impregnated material is merged on the metal tube inner peripheral surface and make through heating as a kind of like this method of fiber-reinforced plastic layer 2, then with other method, for example moulding in advance produces fiber-reinforced plastic layer 2, be inserted into the inside of metal tube 1, compare with bonding agent or by fusion the method on the inner peripheral surface of sticking on and want easily.Fig. 2 to Fig. 7 illustrates particularly with this method and makes the manufacture method of fiber-reinforced plastic layer 2 by the bar handle that constitutes more than two-layer.
As shown in Figure 3, on this plug, at first, the sleeve pipe 7 of one end sealing is set to root always, secondly, in the outside of this sleeve pipe 7 as illustrated in fig. 4 sequential volume around internal layer with pre impregnated material 8 and outer with pre impregnated material 9, afterwards, as shown in Figure 5, insert in the metal tube 1.Here, preferably, sleeve pipe 7 is made by silicon rubber and so on heat-resistant elastic material, and releasing agent also can be coated in the surface.In addition, at internal layer with pre impregnated material 8 and outer with adopting material inequality such as material and machine direction according to various objectives in the pre impregnated material 9.And skin is the material of resin impregnation rate more than 24 weight % with pre impregnated material 9 uses.After inserting in the metal tube 1, the inlet of sleeve pipe 7 is tightened on the root of plug 3 with band 10, from sleeve pipe 7, leaked, simultaneously, suction nozzle 11 is screwed on the threaded portion 4, and is erected at as illustrated in fig. 6 on the stand 12 not make compressed air.The end side that makes plug 3 during setting down, root is with on the pillar 13 that is installed in stand 12 and the arm 14 that can move up and down keeps.
After the setting, compressed air pipe arrangement 15 is connected on the suction nozzle 11, sends into compressed air to centre bore 5, afterwards, heating metal pipe 1.After compressed air was admitted to centre bore 5, compressed air entered sleeve pipe 7 from branched hole 6, and therefore, sleeve pipe 7 expands, and made internal layer with pre impregnated material 8 with outerly they are pressed against on the inner peripheral surface of metal tube 1 when the two becomes flexible with pre impregnated material 9.When heating metal pipe 1 under this state, the resin fusion of two pre impregnated materials and be fused into one simultaneously, outerly will be merged on the inner peripheral surface of metal tube 1 with pre impregnated material 9.Also can adopt the heating of metal tube 1 and to be the state that is erected on the stand 12 and to put into the method that baking oven heats.After treating that two pre impregnated materials merge and solidify, stop heating, stop to supply with compressed air, suction nozzle 11 4 is pulled down from the threaded portion, emit the compressed air of centre bore 5.Afterwards, unload plug 3 from stand 12, from metal tube 1, extract plug 3 after, will be as shown in Figure 7, on the inner peripheral surface of metal tube 1, formed fiber-reinforced plastic layer 2.
Embodiment
Being that 15mm, end diameter are that 9.0mm, wall thickness are on the outer peripheral face of steel pipe of 0.2mm after the chromium plating to tapered that attenuate, the root diameter (RD) of end diameter, inner peripheral surface is ground with flexible horn-like grinding tool, dirt removal from root.The other plug shown in Figure 23 that is prepared in advance outside this steel pipe puts the sleeve pipe 7 of the end sealing that silicon rubber makes, as illustrated in fig. 3 at this releasing agent of the surface of sleeve pipe 7 coating silicone oil in its outside.Afterwards, in the outside of this sleeve pipe 7, at first, with pre impregnated material 8, be impregnated with resin in the coiling carbon fibre, its resin impregnation rate is the pre impregnated material of 36 weight %, and carbon fibre is become with the plug center line+45 angles of spending as internal layer; Secondly, as the outer pre impregnated material 9 of using, become the angles of-45 degree to reel with the plug center line with carbon fibre identical pre impregnated material, and insert in the steel pipe as shown in Figure 5 in the above.
After inserting in the steel pipe, the inlet of sleeve pipe 7 tightened at the root of plug 3 and with suction nozzle 11 with band 10 be screwed on the threaded portion 4, afterwards, as shown in Figure 6, it is erected on the stand 12, the compressed air pipe arrangement 15 of 3 air pressure is connected on the suction nozzle 11, then, put into baking oven together with stand 12, with 150 ℃ temperature heating 45 minutes.Stop to supply with compressed air after the heating, suction nozzle 11 4 is unloaded from the threaded portion, after compressed air is emitted, plug 3 is taken off with steel pipe from the stand 12, from steel pipe, extract plug again.And after cooling, two ends are respectively cut 15mm, and to make its length be 990mm.
Embodiment 2
In embodiment 1, as inboard usefulness, outer with pre impregnated material 9, having used epoxy resin-impregnated in the carbon fibre, resin impregnation rate is the pre impregnated material of 24 weight %.
In embodiment 1, as inboard usefulness, outer with pre impregnated material 9, having used epoxy resin-impregnated in the carbon fibre, resin impregnation rate is the pre impregnated material of 20 weight %.
To the investigation below as above the bar handle of the embodiment 1～3 of acquisition has carried out.It the results are shown in table 1.
(1) moment
To fix apart from end 840mm place, apply the moment of 1 1bfft (0.014kgfm) in the end, measure the bending angle of end this moment.
(2) deflection
In the setting of 25mm place, distance end the fulcrum that supports from opposition side is set from the one-sided fulcrum that supports, apart from this fulcrum 790mm, after with these 2 the bar handle being supported, apart from one-sided fulcrum 350mm place imposed load, the load (kgf) during to the displacement of this place's generation 30mm is measured.
(3) balance
Position of centre of gravity from end meter on the position of a few percent of length overall.
Table 1
| Classification | Plug weight | Moment | | Balance |
| Embodiment | ||||
| 1 | ????83g | ????3.1 | ??9.5 | ????51 |
| Embodiment 2 | ????80g | ????3.1 | ??9.7 | ????51 |
| | ????79g | ????2.9 | ??9.6 | ????50 |
In addition, on the bar handle of embodiment 1～3, load onto No. 3 iron heads and after making mid-mashie, be placed in the gas big gun testing machine, carried out impacting the life test that impacts of golf.It the results are shown in table 2.The criterion of acceptability of this test is decided to be, and reaches 3000 times during the speed per second 55km of golf.
Table 2
| Classification | Number of | Remarks |
| Embodiment | ||
| 1 | More than 3000 | |
| Embodiment 2 | More than 3000 | |
| | 1150 | Interrupt because of producing abnormal sound.Peel off at the two interface of bar handle neck pipe and CFRP layer |
Claims (3)
1. the bar handle of a golf clubs is characterized in that, with fiber-reinforced plastic layer in metal tube inside along the inner peripheral surface setting and be fixed on the inner peripheral surface of metal tube.
2. as the bar handle of the said golf clubs of claim 1, it is characterized in that the resin impregnation rate of fiber-reinforced plastic layer is more than 24 weight %.
3. the manufacture method of the bar handle of a golf clubs, it is characterized in that, the pre impregnated material that is wound into tubular is configured in the inside of metal tube, thereby merges on the inner peripheral surface at metal tube heating outer peripheral face with pre impregnated material under the state on the inner peripheral surface that pre impregnated material is pressed in metal tube with gas pressure.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000328939A JP2002126142A (en) | 2000-10-27 | 2000-10-27 | Golf club shaft and method of manufacturing the same |
| JP328939/00 | 2000-10-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1350875A true CN1350875A (en) | 2002-05-29 |
Family
ID=18805712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN01125889A Pending CN1350875A (en) | 2000-10-27 | 2001-08-27 | Shafts of golf clubs and manufacture thereof |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2002126142A (en) |
| CN (1) | CN1350875A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101678227B (en) * | 2008-03-14 | 2011-12-14 | 藤仓橡胶工业株式会社 | Golf club shaft and golf club |
| CN103768771A (en) * | 2012-10-17 | 2014-05-07 | 邓禄普体育用品株式会社 | Golf club shaft |
| CN110975251A (en) * | 2019-12-17 | 2020-04-10 | 宁波甬东碳纤维科技有限公司 | Process of carbon fiber golf club |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6805642B2 (en) | 2002-11-12 | 2004-10-19 | Acushnet Company | Hybrid golf club shaft |
| CN102166409A (en) * | 2011-05-23 | 2011-08-31 | 叶金吉 | Carbon fiber golf club shaft and formation method |
-
2000
- 2000-10-27 JP JP2000328939A patent/JP2002126142A/en active Pending
-
2001
- 2001-08-27 CN CN01125889A patent/CN1350875A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101678227B (en) * | 2008-03-14 | 2011-12-14 | 藤仓橡胶工业株式会社 | Golf club shaft and golf club |
| CN103768771A (en) * | 2012-10-17 | 2014-05-07 | 邓禄普体育用品株式会社 | Golf club shaft |
| CN103768771B (en) * | 2012-10-17 | 2016-08-31 | 邓禄普体育用品株式会社 | Shaft for golf club |
| CN110975251A (en) * | 2019-12-17 | 2020-04-10 | 宁波甬东碳纤维科技有限公司 | Process of carbon fiber golf club |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002126142A (en) | 2002-05-08 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |