CN1187375A - Golf club shaft - Google Patents
Golf club shaft Download PDFInfo
- Publication number
- CN1187375A CN1187375A CN97117865A CN97117865A CN1187375A CN 1187375 A CN1187375 A CN 1187375A CN 97117865 A CN97117865 A CN 97117865A CN 97117865 A CN97117865 A CN 97117865A CN 1187375 A CN1187375 A CN 1187375A
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- Prior art keywords
- rod
- golf club
- club shaft
- diameter
- tapering
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Abstract
The invention provides a golf shaft which is provided with an upper shaft and a lower shaft; the upper shaft is provided with a grab handle with preset rigidity; the lower shaft is the tip of the shaft head used to receive a golf ball and connected with the upper shaft. The lower shaft is positioned at one third position of the lower end of the shaft, and the rigidity of the lower shaft is more than that of the upper shaft. The shaft body of another golf shaft is provided with the lower part of the shaft body on the upper end, with the diameter increasing from the tip of a shaft body with the first diameter to the upper end of a lower shaft with the second diameter. The shaft body has the second diameter increasing from the lower shaft with the third diameter to the root with the fourth diameter and extending from the upper end of the shaft body to the upper shaft at the lower part. Inverted cone parts which used to connect the lower part with the upper part are arranged in a transition region. The per unit length of the lower part of the taper is more than that of the upper part, and so the increasing rate of the rigidity is larger.
Description
The present invention relates to golf club shaft, especially relate to the golf club shaft that has improved serviceability.
Golf club shaft is made by same material not usually, as timber, metal or composite, and be tapered, forming the bottom than minor diameter of a tip that links to each other with golf club head, and one larger-diameter on the portion of holding in other words the user hold the root of the body of rod.
Golf club shaft has the physical property of several decision body of rod serviceabilities, comprises flex point and rigidity, and the flex point of golf club shaft is meant that the body of rod reaches maximum deflection amount part when crooked.It is decision like this, and the two ends by the folder position body of rod all can not be moved two ends, make body of rod bending then.Body of rod maximum deflection part is called flex point, and it is also referred to as and is the bounce-back point.The determining positions of flex point the track of golf ball during and the speed of golf by the golf clubs slap shot.Usually, the beginner wants high track, so they will have the golf club shaft of low bounce-back point mutually.The professional athlete has enough strength and technology putt when not increasing track, and they wish low flight and have the golf club shaft of high flex point.Flex point depends on the structure and material of the body of rod, for example, has the flex point of the body of rod of constant diameter to be positioned at the intermediate point of the body of rod, and has the flex point of the body of rod of tapering to be positioned at the thin end place of the more close body of rod.Flex point also can change by the material that changes the body of rod.
The rigidity of the body of rod also influences the serviceability of the body of rod.The rigidity of the body of rod depends on the diameter of the body of rod, and the material of manufacturing depends on the thickness of bar wall on not half.For example, the body of rod of constant diameter just has constant rigidity, but the body of rod of taper has different rigidity in its different piece.Usually, the professional athlete who brandishes golf clubs with the speed of about 100 miles per hours wishes the body of rod that rigidity is bigger, and the body of rod bending big because of flexibility is too big.The beginner needs the flexible big body of rod, swings because the beginner can not have professional athlete's speed.
Usually, golf club shaft has constant tapering from the portion of holding to lower tip part.Like this, the diameter of the body of rod is held portion's constant growth to maximum gauge on the body of rod.The golf club shaft of this traditional constant taper is easy to make.But, owing to have constant tapering, the body of rod that the unstable and tip of flexible stronger minor diameter of the thick top of ratio such as hand grip portion is arranged.There are some shortcomings unsettled tip, has influenced the serviceability of the integral body of golf clubs.The first, because the tip flexibility is bigger, so when load was applied to the tip, its hardness was little, the tip of the body of rod has to be reversed and crooked trend, and especially, when brandishing golf clubs, the torsion that acts on heavy bar head makes body of rod tip that the trend of reversing be arranged.Make golf club head be difficult to adjust the angle of slap shot golf, cause the slap shot of coarse golf.The second, when iron type golf club golf, golf is applied to power on the glof club head, makes body of rod tip that crooked trend be arranged, and is difficult to the adjusting lever head.The 3rd, the flexible bigger body of rod can not be supported the weight of golf club head, and the bar head has the trend of whereabouts, and makes body of rod bending.Reverse with bending and make bar head putt become a drift angle, caused coarse golf slap shot.Like this, traditional body of rod that constant taper is arranged has the not high enough tip of hardness, then can not stop contingent reversing and bending.Like this, traditional club has not satisfied serviceability.
For improving the serviceability of golf clubs, some traditional golf club shafts have been changed the various powerful composites in tip, to strengthen the sidewall of tip.But these composites are very expensive, very difficult processing.In addition, what these composites neither be perfect because the tip diameter is very little, so have only the small part composite to be added on the tip of the body of rod.Like this, use other composites can not improve the serviceability of golf clubs biglyyer.
Other traditional bodies of rod are attempted by all diameters that increase the whole body of rod or are used the body of rod of different-diameter or tapering to improve the serviceability of golf clubs and the stability of body of rod tip.The body of rod that diameter increases has bigger, the more stable tip of rigidity, but the hand grip portion of oversized dimensions is also arranged, and this is too heavy concerning most of users.In addition, the body of rod of oversized dimensions diameter is too heavy, and rigidity is too big, to such an extent as to feel bad concerning most users.Other traditional bodies of rod have inconstant cone, though improved the serviceability of golf clubs, the body of rod expense height of these non-constant taperings, and also be difficult to make, the body of rod of these non-constant taperings is heavy too.
The stability of the bar head of golf clubs is very crucial to the serviceability of golf clubs, and the performance of the body of rod also seriously affects stability.Change lower tip part and on the relation of holding between the portion proved unsuccessful in the past.Increase lower tip part stability, when improving the intensity of tip, on the portion of holding also must change so that the golfer to the feeling good of golf club shaft, but both are in conjunction with very difficult realization.The traditional golf club shaft of neither one can not only have been realized the hand grip portion of feeling good but also realize stable tip concerning the golf clubs user.
So, needing a kind of golf club shaft of avoiding these and other problems of known devices, purpose of the present invention just is this.
The invention provides a kind of golf club shaft that improves serviceability, promptly have more stable bottom and sensation better, more flexible top, this body of rod provides than the better accuracy of traditional body of rod.The combination on this stable bottom and gentleer top can realize by the geometry that changes body of rod bottom and top.According to the present invention, the stability of golf clubs and serviceability improve to produce and have the seldom more accurate golf slap shot of Draw and miss, and the slap shot that can produce farther golf.
The present invention also provides a kind of golf club shaft, the tip of the body of rod of the stability of its existing needs is more straight to produce, farther golf slap shot also has gentleer top to obtain the flex point that needs and to be various different golfers' the needed different-stiffness of body of rod hand grip portion.
According to an aspect of the present invention, provide golf club shaft with upper and lower.Top comprises the portion of holding of golf balls sportsman grasping, and upper design becomes to have predetermined rigidity.The bottom comprises a tip of admitting golf club head, and links to each other with top.The bottom is positioned at 1/3rd places of body of rod lower end, and is designed to, and makes the predetermined rigidity in the ratio of rigidity top of bottom big.
According to another aspect of the present invention, the golf club shaft that provides has a bottom of the body of rod that comprises the upper end, and its diameter increases to the following rod body part upper end that second diameter value is arranged gradually from the tip of the body of rod that first diameter value is arranged.The body of rod has the last rod body part that extends to the bottom from the root of the body of rod, and last rod body part has second diameter that increases gradually to the root with the 4th diameter value from the following rod body part that the 3rd diameter value is arranged.Also comprise transition region with the back taper body that connects bottom and top.The tapering of bottom per unit length wants big from the tapering of top per unit length, and then rigidity increment rate in bottom is bigger than top rigidity increment rate.
Fig. 1 is the golf clubs side view that has golf club shaft of the present invention;
Fig. 2 is the side view of Fig. 1 golf club shaft;
Fig. 3 is the side view that amplify body of rod bottom among Fig. 2;
Fig. 4 is a difference hardness comparison diagram on the various traditional golf club shafts and the body of rod of the present invention;
Fig. 5 is the scatter chart of traditional golf club shaft slap shot golf;
Fig. 6 is the scatter chart according to golf club shaft slap shot golf of the present invention.
The present invention relates generally to golf club shaft, particularly has the compound golf club shaft of different taperings and diameter parts.Will describe the present invention below, and can know, the body of rod according to the present invention has very big practicality.
Fig. 1 is the side view that has according to the golf clubs 10 of the body of rod 12 of the present invention.The body of rod 12 is composite preferably.Also can be steel.Golf clubs 10 has a bar head 14 and a lever 16, and bar head 14 is installed on the body of rod tip 18.The tip links to each other with bottom 20, and a protrusion 22 is arranged on bottom 20, will describe in more detail below.And bottom 20 links to each other with top 24, and top 24 has holds portion on a lever 16 and the body of rod or perhaps root 26 links to each other.Present embodiment as can be seen, the tip of the body of rod is very considerable to be admitted by the socket 27 of golf club head 14.For example the tip has 1.5 inches long approximately, and the bottom has 10.5 inches long approximately.The length of bottom and the position of protrusion become with needed rigidity of the body of rod and the needed position of body of rod flex point, will describe in more detail below.Normally, bottom and protrusion provide the rigidity of enhancing to the bottom of the body of rod, will be described herein in more detail below, and this has just reduced the possibility of body of rod distortion, is convenient to control lever head better, has increased the accuracy of slap shot golf.In addition, the transition part that protrusion also can have a reverse taper or diameter to reduce will be described below, so the diameter on top 24 and tapering are identical with the cardinal principle of the traditional body of rod.Requirement makes the top and the traditional body of rod that identical diameter and tapering be arranged so that the rigidity on top and the traditional body of rod are basic identical, and the flex point of the body of rod is positioned at the lower of the body of rod.If transition region is longer, then flex point is positioned at the higher position of the body of rod, and this does not meet needs.The detailed structure of bottom particularly protrusion will be described now.
Fig. 2 and Fig. 3 are the side views of the body of rod, show the preferred size of one embodiment of the present of invention.For example: the body of rod has 1.5 inches long tips 18, admits the socket 27 of golf club head 14, and has constant about 0.380 inch diameter.The bottom 20 of the body of rod has one first conical section 30, and this conical section 30 has preferred diameter, from 0.500 inch the preferred diameter of being about that 0.380 inch preferred diameter is increased to the first conical section top 31 gradually that is about of junction, tip.The tip is connected with first cone portion through 0.0476 inch long first transition region 34.In first transition region, the constant diameter of tip changes to the diameter of the increase of the first dimension body in relatively little zone.
The upper end 31 of first cone portion has a very short segment length to link to each other with second cone portion as 0.0476 inch, and second cone portion 32 has a routine circular cone to have in other words from being about 0.500 inch tapered diameter to the diameter that is about 0.401 inch diameter variation at 33 places, upper end of second cone portion in the upper end 31 of first cone portion.The diameter of tieing up the minimizing of bodies in the upper end 33, the second of second cone portion changes to the size that top 24 slowly increases on 0.0476 inch length.Second cone portion links to each other with top 24, and top 24 has gradually the diameter that increases, promptly from the top 33 of second cone portion be about 0.401 diameter gradually wash rice be increased to 0.4072 inch the diameter of being about apart from 10.5 inches places, body of rod tip.Nearly 0.600 inch of the diameter of the root 26 of the body of rod.
As shown in the figure, the length of second cone portion of diameter minimizing is shorter than the length on the first cone portion length and top.Second cone portion provides a rapid transition between the top of the tip at large scale diameter place and slower increase size, transition region is short as far as possible so that transition can not produce negative interaction to the serviceability of the body of rod.For example, it is longer that the second long cone portion causes having the larger-diameter body of rod, and rigidity is bigger, can make flex point move on to the position of not expecting.
As shown in the figure, or this example, the tip has 1.5 inches long, and first cone portion has 6.875 inches long, and second cone portion has 1 inch long, and top has 29.125 inches long.The specific performance properties that each length at these positions of the body of rod and diameter variation depend on golf club shaft.In addition, for 3 lofting mashies parts and the body of rod length than 9 lofting mashies, especially, and athletic swinging during the speed increase, the flex point of the body of rod will improve under the body of rod, so golf has a low track aloft.
The advantage of the present invention that the bigger tapering in body of rod bottom is provided is that the tip can obtain bigger rigidity and stability when adjusting flex point, because there is bigger flexibility on the top of the body of rod than traditional body of rod, flex point is easy to adjust.Be to adjust flex point, position that can mobile protrusion.For example, be the body of rod that the man prepares, protrusion should be positioned at 8.5 inches away from body of rod tip places be.The body of rod of preparing for the master-hand have one be positioned at about be the protrusion at 7.5 inches away from tip places, flex point is moved down, with the high strike inclined-plane of raising golf.The body of rod of preparing for the Ms has one to be positioned at the protrusion about 6.5 inches from the tip, and flex point is moved down again, to improve the high strike inclined-plane of golf.
Up to the diameter that needing to obtain, so just made the body of rod with plug and the band of on plug, wrapping several layers composite such as carbon fiber.Large diameter shank portion has more composite material tape.In addition, for further strengthening the body of rod, composite material tape wraps on the plug in this manner, mutual at 45 and 90 ° of angles between the fiber in the band and other fibers, and the angle direction of fiber has improved the intensity of the body of rod.Afterwards, after whole composite material tapes had wrapped on the plug, the whole plug and the body of rod heated in thermal compressor, solidified with fixing composite material.At last, become the finished product body of rod after the body of rod frosted of sclerosis or the polishing.
The body of rod shown in Fig. 1～3 is the preferred embodiments of the present invention, but the present invention does not limit any specific diameter or any length-specific of any privileged site.Exactly, the increment rate of lower diameter is a tapering, with the increment rate of upper diameter be the relation that tapering has following formula:
D wherein
1Be protrusion 22 following L
1The diameter of the bottom 20 of distance, D
2Be lower diameter in upper end, bottom 31, D
3Be diameter on the top 24 of second cone portion, 32 bottoms 33, D
4Be upwards L of bottom, top 33
2The diameter on the top 24 of distance.If distance L
1Equal distance L
2Then above-mentioned relation is effective.Diameter D
1, D
2, D
3And D
4The position measure, in Fig. 3, illustrate as an example.Like this, to the body of rod of Fig. 2 and Fig. 3, (D
2-D
1) equal 0.0155, (D
4-D
3) equal 0.0062 so the ratio of this two number be 2.5.Any ratio all belongs to scope of the present invention more than or equal to 2 the body of rod, describes the function and the characteristic of golf club shaft now.
Fig. 4 is traditional golf club shaft A-E and the golf club shaft of the present invention 1 corresponding to golf clubs, with the stiffness variation chart of length.The profile of the body of rod of the present invention illustrates below chart, has shown the corresponding relation of diameter and hardness.As shown in the figure, first cone portion 30 of golf club shaft of the present invention is in that about 6 inches (150mm) are diameter D from the distance tip
1The position to about 8 inches (200mm) are diameter D apart from the tip
2The position between, its rigidity is the twice of traditional body of rod approximately.Then, in second cone portion 32 that body of rod diameter reduces, the rigidity of body of rod I sharply descends, and is almost equal with the rigidity of the traditional body of rod.As mentioned above, second cone portion of the weak point of the body of rod has reduced the rigidity of the body of rod sharp, so obtained low flex point.For the bottom 24 of the body of rod, i.e. diameter D
3And D
4The position, this body of rod is in a ratio of than traditional body of rod rigidity and equates or reduce.The body of rod portion's rigidity of being in one's hands is 1/2 of the traditional body of rod, has more flexible top and well feels to the golfer, and the flex point of the body of rod is on the correct position of the body of rod.
For improved serviceability and the control performance that the body of rod of the present invention has is shown, large quantities of users carry out the test of slap shot golf with some kinds of different golf clubs, and this comprises also that wherein use has the golf clubs of the body of rod of the present invention.The user at first uses traditional several golf of golf clubs slap shot, measures the precision of these slap shot then.Then these identical users also measure the precision of slap shot then with the several golf of golf clubs slap shot that have the body of rod of the present invention.
Fig. 5 and Fig. 6 show the precision of using traditional body of rod slap shot and the precision of using the golf clubs of the body of rod of the present invention respectively.Traditional body of rod has about 5% Slice, 9% harmonic curve, 22% touch ball, in addition, traditional body of rod also has about 12% draw, 32% curve ball, adding up and having 80% slap shot is not straight line, only has 20% slap shot to be actually straight line and accurate.On the contrary, golf club shaft of the present invention has the slap shot of 45% straight line, and only having an appointment 55% is inaccurate slap shot, has avoided the stronger tip of rigidity of the body of rod of the distortion of not expecting of the body of rod due to the remarkable increase of the precision of body of rod slap shot.
Although what relate to previously is specific embodiment of the present invention, those skilled in the art can know when not breaking away from principle of the present invention and spirit and can be limited by additional claim present embodiment change scope of the present invention.
Claims (17)
1, a kind of golf club shaft that predetermined length is arranged, form by following:
Include the top of the portion of holding, the described portion of holding forms the grasping of golf clubs user institute, and described upper design becomes to have predetermined rigidity; And
Include the bottom of tip, this bottom is connected and is positioned at following 1/3rd places of body of rod predetermined length with described top, and described tip forms the admittance golf club head, and the bottom is designed to have the rigidity of the bottom bigger than top predetermined stiffness.
2, golf club shaft as claimed in claim 1 is characterized in that: the tip of the diameter of described bottom from end in the bottom that links to each other with described top that first diameter value is arranged to the body of rod that second diameter value is arranged dwindles gradually.
3, golf club shaft as claimed in claim 2 is characterized in that: described top has the tapered diameter from the end on the top that links to each other with described bottom that the 3rd diameter value is arranged to the part of the body of rod that the 4th diameter value is arranged.
4, golf club shaft as claimed in claim 3 further comprises the described transition region of transition that links to each other with described bottom with described top, and it is designed to have the rigidity between the described rigidity of described predetermined rigidity and described bottom.
5, golf club shaft as claimed in claim 4, it is characterized in that: described transition region has from an end of the transition region that links to each other with the described top with the 5th diameter value to the reverse taper of an end of the transition region that links to each other with the described bottom with the 6th diameter value, and described transition region has the length shorter than lower length.
6, golf club shaft as claimed in claim 5 is characterized in that: the tapering of bottom per unit length is big from the tapering of top per unit length.
7, golf club shaft as claimed in claim 6 is characterized in that: the tapering of bottom per unit length approximately is the twice of the tapering of top per unit length.
8, golf club shaft as claimed in claim 6 is characterized in that the pass between the tapering of the tapering of bottom per unit length and top per unit length is:
9, golf club shaft as claimed in claim 1 is characterized in that the described body of rod made by composite.
10, a kind of golf club shaft that has tip and root, form by following:
Have the upper end and have the following rod body part of the diameter that increases gradually to the upper end of following rod body part from the tip of the body of rod that first diameter value is arranged with second diameter value;
Extend to the last rod body part of bottom from the root of the body of rod;
Have and will connect the transition region of bottom to the reverse taper on top, the described rod body part that goes up has from transition region that the 3rd diameter value is arranged to the body of rod root that the 4th diameter value is arranged the gradually diameter of Zhejiang increase; And
It is characterized in that: the tapering of bottom per unit length is bigger than the tapering of top per unit length, makes the rigidity on ratio of rigidity top of bottom big.
11, golf club shaft as claimed in claim 10 is characterized in that: the tapering of bottom per unit length approximately is the twice of the tapering of top per unit length.
12, golf club shaft as claimed in claim 10 is characterized in that: the tapering of bottom per unit length is that the tapering twice of top per unit length is many.
13, golf club shaft as claimed in claim 12 is characterized in that: the relation between the tapering of the tapering of bottom per unit length and top per unit length is
14, golf club shaft as claimed in claim 10 is characterized in that: the length of transition region is shorter than the length of following rod body part.
15, golf club shaft as claimed in claim 12, it is characterized in that: the body of rod is made by graphite material.
16, golf club shaft as claimed in claim 13 further comprises the tip of admitting golf club head that forms with constant diameter.
17, a kind of golf club shaft with predetermined length, form by following:
Include the top of the portion of holding, the described portion of holding forms the grasping by golf user institute, and described upper design becomes to have predetermined rigidity growth rate; And
Include the bottom of tip, this bottom is connected and is positioned at following 1/3rd places of body of rod predetermined length with described top, described tip forms the admittance golf club head, and the bottom is designed to have the growth rate of the rigidity of the big bottom of the growth rate of the rigidity more predetermined than top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97117865A CN1187375A (en) | 1996-06-28 | 1997-06-27 | Golf club shaft |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US672,362 | 1996-06-28 | ||
| CN97117865A CN1187375A (en) | 1996-06-28 | 1997-06-27 | Golf club shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1187375A true CN1187375A (en) | 1998-07-15 |
Family
ID=5174571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97117865A Pending CN1187375A (en) | 1996-06-28 | 1997-06-27 | Golf club shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1187375A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102100964A (en) * | 2009-12-11 | 2011-06-22 | 伊登公司 | Lightweight golf grip |
| CN102319511A (en) * | 2007-09-10 | 2012-01-18 | Mrc复合制品株式会社 | Shaft for golf club |
| CN105477838A (en) * | 2010-07-12 | 2016-04-13 | 前芯科技有限公司 | Damping device |
-
1997
- 1997-06-27 CN CN97117865A patent/CN1187375A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102319511A (en) * | 2007-09-10 | 2012-01-18 | Mrc复合制品株式会社 | Shaft for golf club |
| CN102319511B (en) * | 2007-09-10 | 2014-03-05 | Mrc复合制品株式会社 | Shaft for golf club |
| CN102100964A (en) * | 2009-12-11 | 2011-06-22 | 伊登公司 | Lightweight golf grip |
| CN105477838A (en) * | 2010-07-12 | 2016-04-13 | 前芯科技有限公司 | Damping device |
| CN105477838B (en) * | 2010-07-12 | 2018-02-09 | 前芯科技有限公司 | Damping device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |