CN1541736B - Hollow golf bar head - Google Patents
Hollow golf bar head Download PDFInfo
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- CN1541736B CN1541736B CN03124115A CN03124115A CN1541736B CN 1541736 B CN1541736 B CN 1541736B CN 03124115 A CN03124115 A CN 03124115A CN 03124115 A CN03124115 A CN 03124115A CN 1541736 B CN1541736 B CN 1541736B
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- club head
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- lid part
- head body
- hollow golf
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- 239000011151 fibre-reinforced plastic Substances 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- 229910000838 Al alloy Inorganic materials 0.000 claims description 6
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 6
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 10
- 238000005755 formation reaction Methods 0.000 description 10
- 239000007769 metal material Substances 0.000 description 10
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- 239000002131 composite material Substances 0.000 description 4
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- 150000002739 metals Chemical class 0.000 description 3
- -1 titanium alloy Chemical class 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
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Abstract
The hollow golf club head of the present invention has raised durability, raised elasticity and increased design freedom. The golf club head has one main body of metal and with one opening near the top center and one cover to the opening and of material different from that for the main body. The ratio between the specific weight of the main body and that of the cover is greater than 1.3.
Description
Technical field
The present invention relates to have the glof club head of hollow structure, more particularly, relate to, compare, improved bounce-back, increased the hollow golf club head of design freedom with situation about only constituting by single metal material by compound kinds of materials.
Background technology
Metal hollow golf club head generally realizes centre of gravityization by the distribution of weight that increases the bottom.But in recent years owing to require to increase the volume of club head as much as possible in the club head mass range of restriction, so be used to realize that the distribution of weight scope of centre of gravityization etc. narrows down reduces, design freedom reduces.And, if exist the centre of gravityization of club head insufficient, can not bring into play the unfavorable conditions such as elastic force of end face to greatest extent.
Though, open the glof club head that discloses compound different kinds material in 2000-229135 communique, No. 2773009 communique of special permission and made special permission No. 2764883 communique, spy.But,, still be that design freedom and bounce-back property are insufficient even in the glof club head of this characteristic that has made up different kinds material.
Summary of the invention
The objective of the invention is to, provide a kind of, compare, can improve bounce-back, the hollow golf club head of increased design freedom with situation about only constituting by single metal material by compound kinds of materials.
In order to achieve the above object, hollow golf club head of the present invention is characterised in that, in the hollow golf club head of club head body by metal forming, near the center of top of above-mentioned club head body, form in the portion of hole, stop up this hole portion with the lid part with above-mentioned club head body different materials formation, the ratio of the proportion ρ f of the proportion ρ m of above-mentioned club head body and above-mentioned lid part (ρ m/ ρ f) is more than 1.3.
In addition, hollow golf club head of the present invention to achieve these goals is characterised in that, in the hollow golf club head of club head body by metal forming, when near the central authorities of the top of above-mentioned club head body and bottom, forming hole portion respectively, stop up this hole portion with the lid part with above-mentioned club head body different materials formation, the ratio of the proportion ρ f of the proportion ρ m of above-mentioned club head body and above-mentioned lid part (ρ m/ ρ f) is more than 1.3.
Have again, hollow golf club head of the present invention to achieve these goals is characterised in that, in the hollow golf club head of club head body by metal forming, near the center of top of above-mentioned club head body, form in the portion of hole, below forming on the periphery at least a portion at above-mentioned top, be the flange in cavity, stop up above-mentioned hole portion with the lid part that constitutes with above-mentioned club head body different materials, the ratio of the proportion ρ f of the proportion ρ m of above-mentioned club head body and above-mentioned lid part (ρ m/ ρ f) is more than 1.3.
Also have, to achieve these goals, hollow golf club head of the present invention is characterised in that, in the hollow golf club head of caput body by metal forming, when near the central authorities of the top of above-mentioned club head body and bottom, forming hole portion respectively, below forming at least a portion of above-mentioned top periphery, be the flange in cavity, and above forming at least a portion of above-mentioned bottom peripheral edge, be the flange in cavity, stop up above-mentioned hole portion with the lid part that constitutes with above-mentioned club head body different materials, the ratio of the proportion ρ f of the proportion ρ m of above-mentioned club head body and above-mentioned lid part (ρ m/ ρ f) is more than 1.3.
So by on the top of club head body and bottom, hole portion being set, stop up this hole portion with lid part with club head different materials formation, make that the ratio (ρ m/ ρ f) of proportion ρ f of the proportion ρ m of club head body and lid part is more than 1.3, can guarantee bigger distribution of weight scope.Thus, compare with situation about only constituting by single metal material, increased design freedom, its result makes the bounce-back increase that is brought by centre of gravityization become possibility.
In the present invention, by on top or top and bottom, flange being set, can fully keep durability.In order to bring into play better durability, preferably in the face side flange is set at least, lid part is overlapping with part or all of the lap more than the width 5mm and this face side flange.The width of face side flange is more than the 5mm, to get final product less than 30mm.But the width of face side flange is measured at face central portion place.
As lid part,,, also can use in magnesium alloy, aluminium alloy and the titanium alloy any one corresponding to the kind of the metal material that constitutes the club head body though preferably use fibre reinforced plastics.According to circumstances, the material as lid part also can use rubber or resin.No matter under the situation of using any material, in order to ensure the distribution of weight scope, the preferred gross mass Wf that stops up the lid part of this hole portion, than by the hypothesis area of hole portion, suppose thickness and club head body proportion ρ m to amass the gross mass Wx that lacks to fall portion that is tried to achieve also light.
In the present invention, though preferably use lid part to stop up to be arranged at hole portion on the club head body,, it is also passable to constitute the hollow golf club head with composite construction in addition.Promptly, hollow golf club head of the present invention is characterised in that, by with this club head body be the part that kinds of materials constitutes the top of club head body at least, the ratio (ρ b/ ρ c) of removing the proportion ρ c at the proportion ρ b of part at top and above-mentioned top in the above-mentioned club head body is more than 1.3.
So by by with this club head body be the part that kinds of materials constitutes the top at least of club head body, and above-mentioned club head body to remove the ratio (ρ b/ ρ c) of the proportion ρ c at the proportion ρ b of part at top and above-mentioned top be more than 1.3, can guarantee the distribution of weight scope fully.Thus, compare, increased design freedom with situation about only constituting by single metal material, its result, the bounce-back increase that centre of gravityization is brought becomes possibility.
Description of drawings
Fig. 1 (a)～Fig. 1 (c) expression be the glof club head of the 1st embodiment of the present invention, Fig. 1 (a) is a plane, Fig. 1 (b) is a front view, Fig. 1 (c) is that the I-I of Fig. 1 (a) is to profile.
Fig. 2 (a)～Fig. 2 (c) expression be the glof club head of the 2nd embodiment of the present invention, Fig. 2 (a) is a plane, Fig. 2 (b) is a front view, Fig. 2 (c) is that the II-II of Fig. 2 (a) is to profile.
Fig. 3 (a)～Fig. 3 (t) is the plane of variation of representing the club head body of glof club head of the present invention respectively.
Fig. 4 (a)～Fig. 4 (d) is a plane of representing the variation of glof club head of the present invention respectively.
Fig. 5 (a)～Fig. 5 (g) is a profile of representing the variation of glof club head of the present invention respectively.
Fig. 6 (a) and Fig. 6 (b) expression be the variation of glof club head of the present invention, Fig. 6 (a) is a plane, Fig. 6 (b) is that the VI-VI of Fig. 6 (a) is to profile.
Fig. 7 (a) and Fig. 7 (b) expression be the variation of glof club head of the present invention, Fig. 7 (a) is a plane, Fig. 7 (b) is that the VII-VII of Fig. 7 (a) is to profile.
Fig. 8 (a)～Fig. 8 (c) expression be the glof club head of the 3rd embodiment of the present invention, Fig. 8 (a) is a plane, Fig. 8 (b) is a front view, Fig. 8 (c) is that the VIII-VIII of Fig. 8 (a) is to profile.
Specific embodiments
Below, with reference to accompanying drawing formation of the present invention is elaborated.
What Fig. 1 (a)～Fig. 1 (c) represented is the glof club head of the 1st embodiment of the present invention.Shown in Fig. 1 (a)～Fig. 1 (c), the glof club head of the present embodiment has hollow structure, and its club head body 1 is made of metals such as titanium alloy, aluminium alloy or stainless steels.Club head body 1 has: top 2, face 3, bottom 4 and neck 5, near porose 2a of the formation of the central authorities at top 2 is empty flange 2b below the periphery at top 2 then is formed with simultaneously.And the 2a of hole portion is compared lid part 6 obstructions that the low material of proportion constitutes with club head body 1.
What Fig. 2 (a)～Fig. 2 (c) represented is the glof club head of the 2nd embodiment of the present invention.Shown in Fig. 2 (a)～Fig. 2 (c), the glof club head of the present embodiment has hollow structure, and its club head body 1 is made of metals such as titanium alloy, aluminium alloy or stainless steels.Club head body 1 has: top 2, face 3, bottom 4 and neck 5, near the central authorities of portion 2 and bottom 4, form porose 2a, 4a respectively, the periphery at top 2 is formed with the flange 2b of below for the cavity simultaneously, and the periphery of bottom 4 is formed with the flange 4b of top for the cavity.And the 2a of hole portion, 4a are compared lid part 6 obstructions that the low material of proportion constitutes with club head body 1.
So by the 2a of hole portion is set on the top 2 of club head body 1, corresponding to needs the 4a of hole portion is set on bottom 4 again, with compare lid part 6 the obstruction 2a of these hole portions, the 4a that the low material of proportion constitutes with club head body 1, can guarantee the bigger big design freedom of distribution of weight scope.Particularly, when on top 2, lid part 6 being set, the increase of inertia momentum and centre of gravity are changed into to possibility, when on bottom 4, lid part 6 being set, make the increase of inertia momentum become possibility by the range of distribution of gaining in weight by the range of distribution of gaining in weight.Here, be necessary to make the ratio (ρ m/ ρ f) of the proportion ρ f of the proportion ρ m of club head body 1 and lid part 6 to be decided to be more than 1.3.If this ratio (ρ m/ ρ f) less than 1.3 just can not be guaranteed sufficient distribution of weight scope.The upper limit of ratio (ρ m/ ρ f), though limit especially,, consider from the combination of the material that is applicable to existing glof club head, be about 16.
The above-mentioned hole 2a of portion, 4a, its shape is not particularly limited.For example, the 2a of hole portion on the top 2 can make the different shape shown in Fig. 3 (a)～Fig. 3 (t).But in the plan view of club head, the area of the preferred 2a of hole portion is in 40～90% scopes of the area at top 2.By making it to be in the above-mentioned scope, can further improve the free degree of design.The area at top herein is the surface area of the part that fences up of the edge by the edge of side surface part, facial edge and neck.Equally, in the upward view of club head, the area of the preferred 4a of hole portion is in 40～90% scopes of the area of bottom 4.By making it to be in the above-mentioned scope, can further improve the free degree of design.The area of bottom herein is the surface area of the part that fenced up by the edge of side surface part and facial edge.In addition, under the indefinite situation in edge, cut glof club head, investigate the bonding part of inner face, also can know the edge of side surface part, face, top and bottom.Have again, under the indefinite situation in the edge at top, also can use to make the angle of inclination of striking surface and glof club head coincide, golf clubs is placed on the plane, remove projected area with respect to the striking surface of plane when vertical direction is overlooked this glof club head.
Above-mentioned flange 2b, 4b, though not necessarily necessary, preferably be present at least a portion of periphery of top 2 and bottom 4, more preferably be present in the face side at least, further preferably cross over whole periphery and exist.That is, by flange 2b, 4b being disposed on the suitable position of club head body 1, in the durability of guaranteeing club head body 1, can also be with this flange 2b, 4b lap utilization as lid part 6.
Above-mentioned lid part 6, preferred at least at the face side and the flange 2b of club head body 1,4b overlaps. at this moment, shown in Fig. 4 (a) and Fig. 4 (b), it can be lid part 6 only covers flange 2b in the face side a part, perhaps, shown in Fig. 4 (c) and Fig. 4 (d), also can be that lid part 6 is preferably more than the 5mm at the width t1 of face side with respect to the overlapping size of flange 2b at face side covering entire flange 2b. lid part 6. by the width t1 that makes this lap is more than the 5mm, can guarantee sufficient durability. in addition, the width t2 of the flange 2b of face side be preferably 5mm above and less than 30mm. under the situation that the flange 4b that makes lid part 6 with respect to bottom 4 overlaps, also preferably select lamination form and size same as described above.
As the material of lid part 6, preferably use fibre reinforced plastics.As these fibre reinforced plastics, can enumerate the matrix resin that makes epoxy resin, unsaturated polyester resin, vinyl ester resin etc. and contain the fibre reinforced plastics of making in the fortifying fibre that is immersed in carbon fiber, glass fibre and aramid fibre etc., particularly preferred with the plastics of carbon fiber as fortifying fibre.But the modulus of elasticity of the fiber of the fibre reinforced plastics of formation lid part 6 is preferably 35ton/mm
2Below, the best is 24ton/mm
2Below.By making this modulus of elasticity in above-mentioned scope, can guarantee durability more fully.
In addition,, also magnesium alloy, aluminium alloy or titanium alloy be can use, according to circumstances, except vulcanie, nylon resin, ionomer resin, polycarbonate resin, PET resin, ABS resin etc. also can be used as lid part 6.
No matter use under the situation of any material, in order to ensure the distribution of weight scope, the preferred gross mass Wf that stops up the lid part 6 of the 2a of this hole portion, 4a, than by the hypothesis area of the 2a of hole portion, 4a, suppose thickness and club head body 1 proportion ρ m to amass the gross mass Wx that lacks to fall portion that is tried to achieve also light, i.e. Wx＞Wf.
For example, when near the central authorities at top 2, forming the hole 2a of portion, on the whole periphery at top 2, form flange 2b, the outside at this top 2 is fitted with under the situation of lid part 6, area A f, proportion ρ f, thickness t f by lid part 6, can obtain the gross mass Wf of lid part 6, Wf=Af ρ ftf.On the other hand, according to the top of club head body 1 and the average thickness tm of bottom in the proportion ρ m of the area A m of the lap of lid part 6 and club head body 1, club head body 1, the lap, can obtain lacking to fall the gross mass Wx of portion, Wx=(Af-Am) ρ mtm.The hypothesis area that is the 2a of hole portion, 4a is to be tried to achieve by the difference of the area A m of the area A f of lid part 6 and lap, the hypothesis thickness of the 2a of hole portion, 4a can be counted as with lap in the average thickness tm equivalence of top, bottom of club head body 1.
What Fig. 8 (a)～Fig. 8 (c) represented is the glof club head of the 3rd embodiment of the present invention.Shown in Fig. 8 (a)～Fig. 8 (c), the glof club head of the present embodiment has hollow structure, and its club head body 1 is made of metals such as titanium alloy, aluminium alloy or stainless steels.Club head body 1 has: top 2, face 3, bottom 4 and neck 5 are laminated with lid part 6 on the outer surface at its top 2.That is, the part at top 2 is made of the material different with club head body 1.
And, making the ratio (ρ b/ ρ c) of the proportion ρ c at the proportion ρ b of the part of removing top 2 in the club head body 1 and top 2 is more than 1.3. top herein is by the edge of side surface part, the part that the facial edge and the edge of neck fence up. under the indefinite situation in edge, cut glof club head, the bonding part of investigation inner face, also can know side surface part, facial, the edge of top and bottom. have again, under the indefinite situation in the edge at top, utilization makes the angle of inclination of striking surface and glof club head coincide, golf clubs is placed on the plane, removes the edge that just can know the top with respect to the outline line of the striking surface of plane when vertical direction is overlooked this glof club head.
By selecting to use the material different to constitute the part at the top at least 2 of club head body 1 with club head body 1, making the ratio (ρ b/ ρ c) of the proportion ρ c at the proportion ρ b of the part of removing top 2 in the club head body 1 and top 2 is more than 1.3, can guarantee the distribution of weight scope fully.Therefore, compare, increased design freedom with situation about only constituting by single metal material, its result, the bounce-back increase that centre of gravityization is brought becomes possibility.
In the present embodiment, remove the part and the top 2 at top 2 in the club head body 1, can constitute by single material, perhaps also can constitute by composite.Under situation about being made of composite, proportion ρ b and proportion ρ c remove the part at top 2 and the proportion at top 2 in the club head body 1.
Embodiment:
In the hollow golf club head of club head body by metal forming, make the comparative example 1 (conventional example) that constitutes by single metal material respectively, with near the formation hole portion central authorities of top or bottom, the lid part that constitutes with various different materials stops up the embodiment 1～4 and the comparative example 2～3 of this hole portion simultaneously.In table 1, " SUS alloy " means stainless steel, and " FRP " means fibre reinforced plastics.
To these glof club heads, carry out rebound coefficient and design freedom evaluation, its result is gathered and be shown in Table 1.Evaluation result is used comparative example 1 is represented as 100 index.Rebound coefficient means that desired value is big more, and the initial velocity of golf is big more, and the distance that flies out is big more.Design freedom is the distribution of weight scope of club head gross mass when being 190g, means that desired value is big more, and the distribution of weight scope is big more.
As can be seen from Table 1, the glof club head of embodiment 1～4, any one is compared with comparative example 1, all be that design freedom is bigger, the club head that rebound coefficient is bigger. comparative example 2,3, because the proportion of lid part is excessive, so design freedom reduces, rebound coefficient is less.
Then, in the hollow golf club head of club head body by metal forming, make the comparative example 11 (conventional example) that constitutes by single metal material respectively, with near the formation hole portion central authorities of top or bottom, simultaneously at the top or the periphery of bottom form flange, and stop up the embodiment 11～15 and the comparative example 12～13 of this hole portion with the lid part of various different materials formations.In table 2, " SUS alloy " means stainless steel, and " FRP " means fibre reinforced plastics.
To these glof club heads, same as described above, estimate its rebound coefficient, design freedom and durability, and summary sheet as a result is shown in the table 2.Evaluation result is used comparative example 1 is represented as 100 index.
From this table 2 as can be seen, the glof club head of embodiment 11～15, any one is compared with comparative example 11, not only keep durability, and be that design freedom increases the club head that rebound coefficient is bigger. comparative example 12,13, because the proportion of lid part is excessive, so design freedom reduces, rebound coefficient is less.
According to the present invention, because in the hollow golf club head of club head body by metal forming, near the central authorities of top or bottom, form hole portion, the lid part of using the material different with the club head body to constitute simultaneously stops up this hole portion, the ratio of the proportion ρ f of the proportion ρ m of above-mentioned club head body and above-mentioned lid part (ρ m/ ρ f) is more than 1.3, so compare with situation about only constituting by single metal material, can improve bounce-back, can increased design freedom.
And then, in hollow golf club head, because the part at the top at least of a body is to be made of the material different with this club head body, the ratio (ρ b/ ρ c) of removing the proportion ρ c at the proportion ρ b of part at top and top in the above-mentioned club head body is more than 1.3, so compare with situation about only constituting by single metal material, can improve bounce-back, can increased design freedom.
Though below the preferred embodiments of the invention are had been described in detail; but; only can be understood as otherwise break away from aim of the present invention and scope, the various changes that the present invention is carried out, substitute and replace, all belong to protection scope of the present invention by the claims regulation.
Claims (7)
1. a club head body is by the hollow golf club head of metal forming, it is characterized in that, when near the central authorities of the top of above-mentioned club head body and bottom, forming hole portion respectively, below forming at least a portion of above-mentioned top periphery, be the flange in cavity, and above forming at least a portion of above-mentioned bottom peripheral edge, be the flange in cavity, stop up above-mentioned hole portion with the lid part that constitutes with above-mentioned club head body different materials, making the ratio ρ m/ ρ f of the proportion ρ f of the proportion ρ m of above-mentioned club head body and above-mentioned lid part is more than 1.3.
2. hollow golf club head as claimed in claim 1 wherein is provided with flange in the face side at least, makes above-mentioned lid part overlapping with the lap more than the width 5mm and this face side flange.
3. hollow golf club head as claimed in claim 2, wherein the width of face side flange is more than the 5mm, less than 30mm.
4. hollow golf club head as claimed in claim 1, wherein the material of above-mentioned lid part is fibre reinforced plastics.
5. hollow golf club head as claimed in claim 1, wherein the material of above-mentioned lid part is magnesium alloy, aluminium alloy or titanium alloy.
6. hollow golf club head as claimed in claim 1, wherein the material of above-mentioned lid part is rubber or resin.
7. hollow golf club head as claimed in claim 1, wherein stop up the gross mass Wf of the lid part of this hole portion, than by the hypothesis area of above-mentioned hole portion, suppose that the long-pending gross mass Wx that lacks to fall portion that tries to achieve of proportion ρ m of thickness and above-mentioned club head body is lighter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN03124115A CN1541736B (en) | 2003-04-29 | 2003-04-29 | Hollow golf bar head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN03124115A CN1541736B (en) | 2003-04-29 | 2003-04-29 | Hollow golf bar head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1541736A CN1541736A (en) | 2004-11-03 |
| CN1541736B true CN1541736B (en) | 2010-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN03124115A Expired - Fee Related CN1541736B (en) | 2003-04-29 | 2003-04-29 | Hollow golf bar head |
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| Country | Link |
|---|---|
| CN (1) | CN1541736B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7229362B2 (en) * | 2004-12-14 | 2007-06-12 | Nike, Inc. | Golf club head or other ball striking device with discrete regions of different density |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1104549A (en) * | 1993-12-28 | 1995-07-05 | 罗光男 | Manufacture of composite head |
-
2003
- 2003-04-29 CN CN03124115A patent/CN1541736B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1104549A (en) * | 1993-12-28 | 1995-07-05 | 罗光男 | Manufacture of composite head |
Non-Patent Citations (1)
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| 全文. |
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| CN1541736A (en) | 2004-11-03 |
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