CN102256670A

CN102256670A - An improved golf club head

Info

Publication number: CN102256670A
Application number: CN2009801507627A
Authority: CN
Inventors: S·J·戴维斯; S·康特
Original assignee: Prince Sports LLC
Current assignee: Prince Sports LLC
Priority date: 2008-12-19
Filing date: 2009-12-17
Publication date: 2011-11-23
Also published as: WO2010070610A2; EP2379181A2; JP2012512693A; US20120129620A1; WO2010070610A3

Abstract

Provided is a golf club head comprising a front portion, a rear portion, an upper portion and a lower portion arranged below the upper portion and vertically spaced therefrom. The upper portion of the golf club head comprises an upper port that is formed therethrough and is defined by a first inner edge (27, 127) thereof. The lower portion of the golf club head comprises a lower port, which is formed therethrough and is defined by a second inner edge thereof. Said upper and lower ports are arranged such that when an eye of a user of the golf club head is aligned therewith along a predetermined alignment axis, the second inner edge defining said lower port is fully visible to the user through said upper port.

Description

Improved golf club head

Technical field

The present invention relates to golf club head, it has the polar moment of inertia that outstanding head is aimed at performance and increase.

Background technology

As everyone knows, some golf club head (golf club head), for example the performance of push rod head is mainly by alignment and stability decision.

The stability of golf club head mainly is subjected to polar moment of inertia (PMOI) influence of so-called golf club head.

The PMOI value of golf club head is high more, and it is big more that golf club head changes the resistance that its position provides.

The geometric properties that makes the golfer golf club head can be faced predeterminated target promotes or hinders the alignment of golf club head.

Basically, golf clubs can change its position with respect to five frees degree:

A) be parallel to and impact the direction translation; With

B) perpendicular to impacting the direction translation; With

C) around the horizontal axis rotation vertical with impacting direction; With

D) around the horizontal axis rotation parallel with impacting direction; With

E) around the vertical axis rotation.

Various features and method have been proposed for many years, to promote the golfer with the ability of golf club head aligning to impact.

This typically needs to align and forms or be coated in many to symbol on the golf club head.The golfer must from pair of symbols see another to symbol to carry out alignment procedures.

Usually, symbol is than invisibility, because they are very little or have a fine feature.

Existing golf club head deisgn approach is in instability, and this is because they are easily around the vertical axis rotation.When taking place during this situation is impacting, the golfer can lose the control to direction of bowl.

Therefore, have continual demand for improved golf club head, this golf club head has the assemblage characteristic of improved aligning performance and stability.

Summary of the invention

In order to address that need, the invention provides as the described golf club head of following claim 1.

Under defining usually, golf club head according to the present invention comprises front portion, rear portion, upper and lower.

The top of golf club head comprises the upper shed that runs through described top and form and limited by first internal edge on top.

The lower disposed of golf club head and vertically separates with top below top.

The bottom of golf club head comprises the under shed that runs through described bottom and form and limited by second internal edge of bottom.

Described upper shed and under shed be arranged to eyes as the user of golf club head along the predetermined alignment axis with it on time, second internal edge and first internal edge are presented to the user with predetermined mutual spatial relationship.

The above-mentioned aperture arrangement that vertically separates according to golf clubs of the present invention becomes to make them obviously help the aligning of club head.

The shape of described opening can be an arbitrary shape as required.

Preferably, upper shed and under shed are oval, and the long axis of each opening is vertical with the golf club head surface.

According to the first embodiment of the present invention, upper shed and under shed be arranged to eyes as the user of golf club head along the predetermined aligned axis with it on time, can make the user see second internal edge that limits described under shed fully by described upper shed.

In this case, under shed advantageously is slightly less than upper shed dimensionally, make when realize golf club head correctly on time, the edge of under shed is located and can be seen by upper shed to two openings concentrically with respect to one another.

When the golfer with respect to its sight line regulate golf club head the position so that two openings on time, he can see under shed and the two concentric locating in upper shed.

By doing like this, the golfer can be as described below with respect to the position of five frees degree control golf club heads and towards:

Be parallel to and impact the direction translation: far away if golf club head was located to the right, the under shed left end is with invisible, and vice versa;

Perpendicular to impacting the direction translation: if golf club head and golfer are far away excessively apart, the nearest edge of under shed is with invisible, and vice versa;

Rotate around the horizontal axis parallel with impacting direction: if golfer's hand and golfer are far away excessively apart, the nearest edge of under shed will become invisible, and vice versa;

Rotate around the horizontal axis vertical with impacting direction: far away if golfer's hand was located to the right, the left hand edge of under shed is with invisible, and vice versa;

Rotate around vertical axis: if club head centers on the axis rotation of bar, the concentricity of under shed and upper shed can't keep.

According to alternative embodiment of the present invention, described upper shed and under shed be arranged to eyes as the user of golf club head along the predetermined aligned axis with it on time, second internal edge that limits described under shed makes the user can't see fully owing to being blocked by described upper shed.

In this case, the under shed favorable terrain becomes and makes it be slightly larger than upper shed.Therefore, the golfer is by regulating head position so that the edge of golf club head is blocked the aligning that obtains golf club head by the upper shed edge.

The golfer can with respect to the position of five frees degree control golf club heads and towards alignment procedures comprise the criterion of aiming at those complementations as mentioned above.

In fact, the golfer can with respect to the position of five frees degree control golf club heads and towards, as described below:

Be parallel to and impact the direction translation: far away if golf club head was located to the right, the under shed right-hand member will be as seen, and vice versa;

Perpendicular to impacting the direction translation: if golf club head and golfer are far away excessively apart, the distal side edge of under shed will be as seen, and vice versa;

Rotate around the horizontal axis parallel with impacting direction: if golfer's hand and golfer are far away excessively apart, the distal side edge of under shed will be as seen, and vice versa;

Rotate around the horizontal axis vertical with impacting direction: far away if golfer's hand was located to the right, the right side edge of under shed will be as seen, and vice versa;

Advantageously be configured to make its PMOI obviously to improve according to golf club head of the present invention.

Preferably, golf club head comprises that a plurality of internal parts and one or more external component, external component compare more the center of gravity away from golf club head with internal part.

According to the present invention, the quality of internal part and external component, weight, volume and/or density can advantageously be arranged to the PMOI of golf club head is improved.

For example, external component is can quality bigger and/or can far overweight internal part.

For example, external component can comprise than be included in internal part or one of at least in the bigger material of density of material.

Externally parts comprise under the situation of high density material, and this material can be chosen as steel, tungsten, titanium or other suitable material.

Comprise at internal part under the situation of the less material of density that this material can be chosen as polymer, as fibre reinforced composites or other suitable material of carbon-fibre reinforced epoxy resin.

In another example, external component can have the volume bigger than internal part.

According to the present invention, a plurality of openings that vertically separate are formed on the upper and lower of golf club head, make the vertical location that limits by opening or near do not have the quality of golf club head.

Therefore, in golf club head according to the present invention, the PMOI/ weight ratio is higher.

What need point out is that in fact the barycenter of golf club head need not overlap with the geometric center of golf club head.But above-mentioned alignment axis must overlap with the barycenter of golf club head.

Therefore, golf club head can be arranged to improve at square stance the generation of ball impact power and minimizing undesired rotation phenomenon.

According to the present invention, the top of golf club head and/or bottom can comprise wall construction.

According to the present invention, the top of golf club head and/or bottom can comprise tubular structure.

According to the present invention, top and/or bottom can comprise tubular structure, and tubular structure comprises have at least one aperture at least one leg of (for example, through hole or blind hole).

The present invention preferably is applied to push rod (golf putter) head, but it also is applicable to the head of dissimilar golf clubs.

Description of drawings

In order to understand the present invention and advantage thereof better, should show the preferred embodiments of the present invention in the accompanying drawing with reference to the accompanying drawings:

Fig. 1 is the normal axomometric drawing according to the embodiment of golf club head of the present invention; With

Fig. 2 is the vertical view of golf club head shown in Figure 1; With

Fig. 3 is the side view of golf club head shown in Figure 1; With

Fig. 4 A-4D is some schematic diagrames, has shown how golf club head shown in Figure 1 should redirect or has moved the correct aligning that is used to impact to realize; With

Fig. 5 is the vertical view according to another embodiment of golf club head of the present invention; With

Fig. 6 is the vertical view according to another embodiment of golf club head of the present invention; With

Fig. 7 is the vertical view according to another embodiment of golf club head of the present invention; With

Fig. 8 is the normal axomometric drawing according to another embodiment of golf club head of the present invention; With

Fig. 9 is the vertical view of golf club head shown in Figure 8; With

Figure 10 is the side view of golf club head shown in Figure 8; With

Figure 11 is the normal axomometric drawing according to another embodiment of golf club head of the present invention; With

Figure 12 is the normal axomometric drawing according to another embodiment of golf club head of the present invention.

The specific embodiment

With reference now to accompanying drawing,, the present invention relates to improved golf club head 10,100,200,300.

It is anterior 16,116,216,316 that golf club head 10,100,200,300 comprises, rear portion 18,118,218,318, top 12,112,212,312 and be arranged in below an upper section and with its bottom that vertically separates 14,114,214,314.

Top 12,112,212,312 comprises the upper shed 26,126,226,226 that runs through formation and limited by its first internal edge 27,127,227,327 at least.

Bottom 14,114,214,314 comprises the under shed 28,128,228,328 that runs through formation and limited by its second internal edge 29,129,229,329 at least.

According to the present invention, described upper shed and under shed are arranged to: when the user's of golf club head eyes along predetermined aligned axis 61 with it on time, second internal edge 29,129,229,329 that limits described under shed can be seen by the user with predetermined spatial relationship with respect to described first internal edge 27,127,227,327 that limits upper shed.

Advantageously, compare with one or more material of bottom 14,114,214,314 with making top 12,112,212,312, front portion 16,116,216,316 and rear portion 18,118,218,318 can be made by the bigger material of one or more density.

Replacedly, compare with one or more material of making top 12,112,212,312, front portion 16,116,216,316, rear portion 18,118,218,318 and bottom 14,114,214,314 can be made by the bigger material of one or more density.

According to some embodiments of the present invention (Fig. 1-7), the top of golf club head 10 and/or bottom can comprise wall construction, for example roof 12 and diapire 14.

Fig. 1-3 has shown first embodiment according to golf clubs of the present invention.

Golf club head 10 comprises front portion 16 and rear portion 18.

Forwardly 16, golf club head comprises positive 20 and recessed chamber 22, and recessed chamber 22 is positioned at anterior 16 to hold golf club portion.

Golf club head 10 shown in Figure 3 comprises roof 12 and the diapire 14 that forms the upper and lower respectively.

Be hollow inside between roof 12 and the diapire 14.

Roof 12 and diapire 14 are preferably made by light material, and condensate plastic material for example is perhaps as the fiber-reinforced resin of carbon-fibre reinforced epoxy resin.

This can produce the lightweight central area of golf club head 10, makes big weight can be positioned on front portion 16 and the rear portion 18 to improve the PMOI of golf club head 10.

Roof 12 or diapire 14 can also change center of gravity by making with in the vertical direction than heavy material of for example steel.For example, if diapire 14 is formed from steel, this can make center of gravity reduce towards ground.

Can use optionally recessed zone 24 further to reduce the weight of the central area of golf club head 10.Recessed zone 24 can be positioned at diapire 14 and/or roof 12.

Can also be forwardly 16 and/or rear portion 18 on other recessed zone is set.

Form opening 26 on roof 12, opening 26 passes roof thickness and is limited by first internal edge 27.

Opening 26 advantageously is oval, and its long axis is with to impact direction consistent and be positioned at the hope impact position of golf.

Opening 26 has been removed all wt of the central part of roof 12, makes this zone produce the zero mass state.

Another opening 28 is formed on the diapire 14, and it passes described diapire and is limited by second internal edge 29.

In this case, the shape of opening 28, towards similar with relative position and opening 26.

The same with opening 26, opening 28 has been removed all wt of the central area of diapire 14, makes this zone produce the zero mass state.

Front portion 16, diapire 14 and rear portion 18 can be made by identical materials, and roof 12 can be made from a variety of materials.

For example, front portion 16 and rear portion 18 and diapire 14 can be about 8g/cm by density ³Steel make.

As replaceable scheme, at least one in the

golf club head

14,18 and 16 can be about 19g/cm by density ³Tungsten and/or density be about 4.7g/cm ³Titanium make.

Preferably, roof 12 is about 1.7g/cm by density ³Carbon fiber/epoxy resin, perhaps density is 2.7g/cm ³Glass fibre/epoxy resin make.

Fig. 1-5 has shown embodiments of the invention, according to these embodiment, upper shed 26 and under shed 28 are arranged to: when the user's of golf club head eyes along predetermined aligned axis 61 with it on time, the user can see second internal edge 29 that limits under shed 28 fully by upper shed 26.

Fig. 2 has shown this feature, wherein, has shown golf club head 10 with respect to the golfer's who prepares to utilize golf club head 10 and impact correct location of sight line and the vertical view of aiming at.

The all visible and under shed 28 of upper shed 26 and under shed 28 and upper shed 26 are concentric and be slightly less than upper shed.

If the golfer does not make the correct location of golf club head or directed, opening 28 and 26 concentric situation can not occur.

When golf club head 10 is correctly located with respect to golfer's eyes, as shown in Figure 2, it will be appreciated that, the golfer can see the internal edge that limits under shed 28 fully by upper shed 26, makes the internal edge that limits

opening

26 and 28 provide predetermined image to the golfer.

Will be appreciated that, when the golfer when the top is observed, opening 26 and 28

edge

27 and 29 define the planar graph of sealing, described

curved edge

27,29 has predetermined relationship each other, and this predetermined relationship is easy to correctly be aimed at golf club head by golfer's identification and expression golfer.

Because

edge

27 and 29 is crooked, institute so that one to the brigadier golf club head is aimed at another on two dimensions.

Will be appreciated that how this feature simplifies alignment procedures.

Can consider how Fig. 4 A-4D redirects or move the correct aligning that is used to impact to realize to understand golf club head shown in Figure 2.

With reference to figure 4A, or be that golf club head 10 leans forward from the tram so that the right side at the edge 29 of under shed 28 is kept off, or be that the golfer rotates golf club head, make its rear portion 18 be higher than its front 20.

Therefore, the edge 29 of under shed 28 seems with respect to the edge 27 of upper shed 26 too to the right.

Suitable the redirecting or move of golf club head will make two

elliptical openings

26 and 28 concentric alignment, make the golfer can see the whole edge 29 of under shed 28.

As can be seen, the golfer finishes to aim at two features only need seeing golf club head 10, that is, and and two

elliptical openings

26 and 28

edge

27 and 29.

Can also recognize that these features are enough big and remarkable so that the golfer can easily see them in this process.

Fig. 4 B has shown following situation, promptly, golf club head 10 with respect to the horizontal axis rotation parallel with the front 20 of golf club head, makes the edge 29 of under shed 28 seem to be offset with respect to the edge 27 of upper shed 26 from tram hypsokinesis or head 10 left.

Fig. 4 C has shown following situation, promptly, golf club head 10 is crossed far away or head 10 with respect to the horizontal axis rotation vertical with the front 16 of golf club head from the golfer, makes the edge 29 of under shed 28 seem to offset downward with respect to the edge 27 of upper shed 26.

Fig. 4 D has shown following situation, promptly, golf club head 10 is crossed near or head 10 with respect to the horizontal axis rotation vertical with the front 20 of golf club head from the golfer, makes the edge 29 of under shed 28 seem to move up with respect to the edge 27 of upper shed 26.Under every kind of situation shown in Fig. 4 A-4D, observe the edge 29 of whole under shed 28 and make upper shed 26 and the axially aligning of under shed 28 by golfer as mentioned above, the golfer can easily regulate push rod the position or towards so that its correct location impact being used to.

In Fig. 5, shown embodiment according to golf clubs of the present invention, wherein, upper shed 26 has different shapes with under shed 28.

When golf club head 10 is correctly located with respect to golfer's eyes, as shown in Figure 5, it will be appreciated that, the golfer can see the internal edge 29 that limits square under shed 28 fully by oval upper shed 26, makes the

internal edge

27 and 29 that limits

opening

26 and 28 provide predetermined image to the golfer.

The curved edge that should be appreciated that opening 26 and 28 still has predetermined relationship each other, and it can easily be discerned and represent the correct location of golfer and golf club head by the golfer.

Equally in this case,

edge

26 and 28 is crooked, thereby allows golf club head easily to locate on two dimensions.

Fig. 6-7 has shown alternative embodiment of the present invention, according to this embodiment, upper shed 26 and under shed 28 are arranged to: when the user's of golf club head 10 eyes along the predetermined aligned axis with it on time, the user cannot see second internal edge 29 that limits under shed 28 fully by upper shed 28.

For this reason, under shed 28 preferably forms and makes it be slightly larger than upper shed 27.Therefore, the position of golfer by regulating head 20 is so that the edge 29 of under shed 28 is blocked the aligning of realizing golf club head 10 by the edge 27 of upper shed 26.

Therefore, in this case, when golf club head 10 is not positioned at correct position, the edge 29 of under shed 28 for user's eyes with partly as seen, the user can mobile golf club head 10 to realize blocking fully the edge 29 of under shed 28.

In golf club head shown in Figure 6, upper shed 26 and under shed 29 all have same elliptical shape, and in the embodiment shown in fig. 7, opening 26 and 28 has different shapes.

Fig. 8-10 has shown the different views according to golf clubs 100 of the present invention, and wherein, the upper and lower of golf clubs all comprises tubular structure.

Golf club head 100 comprises top tubular structure 112, bottom tubular structure 114, front portion 116 and rear portion 118.

Golf club head 100 also comprises positive 120 and be positioned at anterior 116 to hold the recessed chamber of bar portion (serve as simplify and know not demonstration of purpose).

Each

tubular structure

112 and 114 preferably has hollow inside.

Tubular structure

112 and 114 is made by light material, and condensate plastic material for example is perhaps as the fiber-reinforced resin of carbon-fibre reinforced epoxy resin.

This produces lightweight central area, make big weight be positioned at anterior 116 and rear portion 118 to increase the PMOI of golf club head 100.

Alternatively, top tubular structure 112 or bottom tubular structure 114 can be by the bigger materials of density, and for example aluminium, steel or titanium are made with the vertical axis along golf club head and changed center of gravity.

For example, if bottom tubular structure 114 is formed from steel, this can make center of gravity reduce towards ground.

The internal edge 127 of top tubular structure 112 defines upper shed 126.

Opening 126 advantageously is oval, and its long axis is with to impact direction consistent and be positioned at the hope impact position of golf.

Certainly, opening 126 can have different shapes.

Opening 126 has been removed all material of the central area of golf clubs 100, makes this zone produce the zero mass state.

Bottom tubular structure 114 forms under sheds 128, and its shape, towards similar with relative position and opening 126 is still smaller.

However, opening 126 can have different shapes.

The same with opening 126, opening 128 has been removed all material of the central area of golf club head 100, makes this zone produce the zero mass state.

Opening

126 and 128 is arranged to: when the user's of golf club head 100 eyes along predetermined aligned axis 61 with it on time, can make the user see second internal edge 129 that limits under shed 128 fully by upper shed 126.

Fig. 9 is that golf club head 100 is in tram and the vertical view of aligning to impact with respect to the golfer.

Upper shed 126 and under shed 128 are all as seen.

In addition, under shed 128 is concentric and smaller with upper shed 126.

If the golfer does not make the correct location of golf club head or directed,

opening

128 and 126 will can not present as shown in Figure 9 with one heart.

When golf club head 100 is correctly located with respect to golfer's eyes, as shown in Figure 9, it will be appreciated that, the golfer can see the internal edge 129 that limits under shed 128 fully by upper shed 126, makes the internal edge that limits

opening

126 and 128 provide predetermined image to the golfer.

Will be appreciated that, when the golfer when the top is observed, the planar graph of each

opening

126 and 128 edge limited sealing, opening 126 and 128

curved edge

127 and 129 have predetermined relationship each other, and it is easy to be aimed at the correct of golf club head 100 by golfer's identification and expression golfer.

Because

edge

127 and 129 is crooked, therefore make one to the brigadier golf club head 100 to be aimed on two dimensions with another.This has simplified alignment procedures.

According to interchangeable embodiment (not shown),

opening

126 and 128 can also be arranged to eyes as the user of golf club head 100 along the predetermined aligned axis with it on time, the user can't see second internal edge 129 fully by upper shed 126.

In this case, lower tubular structure 114 is arranged to limit the under shed 128 that is slightly larger than upper shed 126.

When golf club head 100 is not positioned at correct position, with partly as seen, the user can make the edge 129 of under shed 128 be blocked the aligning of realizing golf club head 100 by the edge 127 of upper shed 126 by regulating head position for user's eyes at the edge 129 of under shed 128.

In golf club head 100, bottom tubular structure 114 is positioned on the more than horizontal plane, forms " W " shape, and outermost leg 114A compares further from ground with the most inboard leg 114B that forms under shed 128.

Like this, golf club head 100 can be resisted around the distortion of the horizontal axis vertical with positive 120.

In various interchangeable embodiment, the leg 114A-114B of bottom 114 with respect to the horizontal plane and/or vertical plane arrange with identical or different angle, and be attached on the front portion 116 and rear portion 118 of golf club head 100 at selected position, so that make golf club head have firmer or more soft structure as required.

According to the present invention (Figure 11-12), the top tubular structure of golf club head and/or bottom tubular structure can comprise one or more leg with at least one aperture.

In Figure 11, shown golf club head 200, it has and the similar structure of club head shown in Fig. 8-10.

Golf club head 200 comprises front portion 216, rear portion 218 and the upper tubular structure 212 and the lower tubular structure 214 that form the upper and lower of golf club head respectively.

Opening 226 and 228 can be formed respectively by tubular structure 212 and 214.These openings can be arranged to: when the user's of golf club head 200 eyes along the predetermined alignment axis with it on time, the user can see or cannot see fully second internal edge 229 that limits under shed 228 fully by upper shed 226.

Tubular structure 212 and 214 includes one or more leg 212A and 214A, described leg be provided with along vertical substantially be one or more aperture 250 that main shaft 250A perpendicular to the ground extends.

Each aperture 250 can be the through hole that passes the thickness of respective leg 212A or 214A, or blind hole.

Lower tubular structure 214 can have the leg 214A that is in apart from ground differing heights place.

In Figure 12, shown and substantially similar golf club head 300 shown in Figure 11.Golf club head 300 comprises front portion 316, rear portion 318 and the upper tubular structure and lower tubular structure 312 and 314 that form the upper and lower of golf club head respectively.

In this case, opening 326 and 328 also can be arranged to eyes as the user of golf club head 300 along the predetermined alignment axis with it on time, the user can see or cannot see second internal edge 329 that limits under shed 328 fully by upper shed 326.

Tubular structure 312 and 314 includes one or more leg 312A and 314A, and described leg is provided with one or more aperture 350.

In this case, aperture 350 is that main shaft 350A parallel to the ground extends along level substantially.

Each aperture 350 can be the through hole that passes the thickness of respective leg, or blind hole.

Lower tubular structure 314 can have the leg that is in apart from ground differing heights place.

Be positioned at golf club head 200,300 top and/the structural aperture 250 of lower tubular and 350 has significant advantage.

They can be used to hold the insert of suitable shaping, so that change the distribution of weight of golf club head as required.

Further, aperture 250 and 350 can suitably be arranged and design, with the outward appearance of obvious improvement golf club head.

The distortion of Figure 11-12 illustrated embodiment also is possible.For example, aperture 250,350 can have the oval in shape of being different from towards extension or they along different.

According to the present invention, some part of golf club head 10,100,200,300 or internal part are arranged near its center of gravity, for example roof 12 and/or diapire 14, top tubular structure 112,212,312 and/or bottom tubular structure 114,214,314 can be by the multi-layer oriented carbon fibers that utilizes epoxy binder to combine, and promptly " carbon element " material is made.

Fiber in the different layers is parallel to each other, but different layers preferably has different fiber orientations.

This produces lightweight but solid structure.

Therefore, by forming opening at central part and, advantageously having reduced the quality of the most close golf club head center of gravity by using the central part that forms the push rod main body than light material.

These weight that save can redistribute the periphery to golf club head, for example outer part or parts 18,118,218,318 and 16,116,216,316 improve the stability of golf club head and obtain better direction of bowl control with the PMOI of further increase around vertical axis.

In order to form the lightweight part of golf club head, advantageously, can use carbon fiber reinforced epoxy preimpregnation material.

Preimpregnation material is embedded in the resin by for example carbon, glass and other fiber and forms.

This typically utilizes pre-preg machine to finish, and it applies non-cured resin on fiber makes them all soak into.

The resin of pre-preg is " a B level ", thereby it is meant that only needing heating to pressurize carries out crosslinked make hardening of resin and curing.

Usually use thermosetting resin,, help embedding process because they at room temperature are in liquid state as epoxy resin.

Chemical reaction by two components obtains thermosetting, forms material with irreversible procedure.

Usually, two components are in liquid state, after mixing, still keep the liquid state of a period of time before cross-linking reaction begins.

Under " B level " state, carry out the pre-preg manufacture process of resin-coating fiber.

Common thermosets is epoxy resin, polyester, vinyl, phenolic resins, polyimides etc.The pre impregnated material sheet cuts according to specific order and piles up, and is as mentioned below, notes the fiber orientation of each layer.

Each pre impregnated material layer comprises the epoxy resin that combines with unidirectional parallel fibers, and described group of fibers is selected from the group of fibers that includes but not limited to carbon fiber, glass fibre, aramid fibre and boron fibre.

Pre impregnated material is cut into bar with different angles and shelves on the table.

Bar piles up subsequently in an alternating manner, makes that every layer fiber is different with adjacent layer.For example, one deck is+45 °, and adjacent layer is-45 °.

If wish that bending rigidity is bigger, can use for example fiber angle of 0 degree.

If wish that torsional rigidity is bigger, can use wide-angle (for example ,+/-45 degree) bar of larger proportion.Also can use other fiber angle.

Then, the sandwich that comprises different pre impregnated material bars is ready for molded.

The wall 12 of

golf club head

10 and 14 can form by extruding pre impregnated material between two plates, and described plate has the hope surface profile of

wall

12 and 14.

Form wall

12 and 14 in when pressurization heating, and

opening

26 and 28 can moldedly form or the machine operations after molded in remove.

The tubular structure 112,212,312 of golf club head 100,200,300 and 114,214,314 can be by being rolled into pre impregnated material tubular making.The air bag of polymeric material inserts in the pipe.

It is packed in the mould, mould is placed in the hot press of closed mould subsequently.

To air bag apply air pressure with internally to its pressurization, thereby make pre impregnated material abut against that mold cavity expands and compacting.

Heating mould flows and final crosslinking curing to allow epoxy resin subsequently.

Air bag internal pressure and high molding temperature allow pre impregnated material to have the shape of model cavity before crosslinking curing in conjunction with causing epoxy resin viscosity to reduce.

When molded operation is finished, open model and take out tubular structure.

Aperture 250 and 350 can moldedly form or the machine operations after molded in remove.

The operation that wall portion or tubular structure is fixed on the front and rear of golf club head can be by bonding or utilize some machanical fasteners fixedly to finish.

For example, front and rear can be used as two parts and provides, and it utilizes machanical fastener and wall portion or tubular structure to be assembled together subsequently.

As an alternative, the fixing of wall construction or tubular structure can directly carry out in model by biphasic injection or common mode technology (co-moulding process) etc.

For example, wall construction or tubular structure can be fixed on the front and rear by common mode operation, and wherein, front and rear provides for metal parts and inserts in the model, and wall construction or tubular structure are by forming around its carbon fibre composite that forms.

As another selection, front and rear can with wall construction or tubular structure interference fit.

Used composite is preferably carbon fiber reinforced epoxy resin, because purpose is to reinforce having light weight place.

Also can use other fiber, for example glass fibre, aromatic polyamides, boron etc.

Can use other thermosetting resin, for example polyester and vinyl esters.

Can also use thermoplastic resin, for example nylon, ABS, PBT etc.

As previously mentioned, opening 16,126,226,326 and 28,128,228,328 can have any desirable shape.

In certain embodiments, aligning opening especially bottom opening 28,128,228,328 can have open end or open edge or straight line, to help the aligning of golf club head.

In certain embodiments, the opening of golf club head can have round-shaped.

In certain embodiments, they have square, rectangle, rhombus or other quadrangle form, perhaps have than four edges shape more or less.

In certain embodiments, the shape of aligning opening is the combination of one or more curve part and one or more straightway.

With regard to top description, can recognize, optimum dimensional relationship as a part of the present invention, the variation that comprises size, material, shape, form, function, mode of operation, assembling and use aspect is apparent to those skilled in the art, and the present invention is contained with shown in the accompanying drawing and described all modes with equivalent relation of specification.

Although the special arrangement of reference part, feature etc. is described various embodiment, but these do not get rid of all possible layout or feature, in fact, many other embodiment, improvement and distortion are apparent to those skilled in the art.

Claims

1. golf club head (10,100,200,300), comprise front portion (16,116,216,316), rear portion (18,118,218,318), top (12,112,212,312) and the bottom (14 that is arranged in described below an upper section and vertically separates with described top, 114,214,314), described top comprises running through and forms and by first internal edge (27 on described top, 127,227,327) upper shed (26 of Xian Dinging, 126,216,316), described bottom comprises running through and forms and by second internal edge (29 of described bottom, 129,229,329) under shed (28,128 of Xian Dinging, 228,328), described upper shed and under shed be arranged to eyes as the user of golf club head along predetermined alignment axis (61) with it on time, the described internal edge of going up that limits described second internal edge of described under shed and limit described upper shed is presented to the user with predetermined mutual spatial relationship.

2. golf club head as claimed in claim 1, it is characterized in that, described upper shed and under shed (26,28,126,128,226,228,326,328) be arranged to eyes as the user of golf club head along the predetermined alignment axis with it on time, the user can see described second internal edge that limits described under shed fully by described upper shed.

3. golf club head as claimed in claim 2, it is characterized in that, described upper shed and under shed (26,28,126,128,226,228,326,328) first and second internal edges define a shape separately, and described shape is mutually the same when observing from the top, make when the user's of golf club head eyes along described predetermined alignment axis and golf club head that on time the internal edge of described upper shed and described under shed defines the predetermined image that can be seen by the user.

4. golf club head as claimed in claim 3 is characterized in that, described upper shed and under shed (26,28,126,128,226,228,326,328) first and second internal edges all define from above be the shape of the planar graph of sealing when observing.

5. golf club head as claimed in claim 2 is characterized in that, described under shed (28,128,228,328) is slightly less than described upper shed (26,126,226,326).

6. golf club head as claimed in claim 1 is characterized in that, described upper shed and under shed (26,28,126,128,226,228,326,328) be arranged to eyes as the user of golf club head along predetermined alignment axis (61) with it on time, the user is by described upper shed (26,126,226,326) cannot see the described under shed (28 of qualification fully, 128,228,328) second internal edge (29,129,229,329).

7. golf club head as claimed in claim 6 is characterized in that, described under shed (28,128,228,328) is slightly larger than described upper shed (26,126,226,326).

8. as the described golf club head of one or more of claims formerly, it is characterized in that described under shed (26,126,226,326) and described upper shed (28,128,228,328) are oval.

9. as the described golf club heads of one or more of claims formerly (10), it is characterized in that at least one in described top and/or the described bottom comprises wall construction (12,14).

10. golf club head as claimed in claim 9 is characterized in that, described top and described bottom comprise roof (12) and diapire (14) respectively.

11. golf club head as claimed in claim 10 is characterized in that, described roof and/or described diapire comprise one or more recessed zone (24).

12., it is characterized in that described top and/or described bottom comprise tubular structure (112,212,312,114,214,314) as the one or more of described golf club head among the claim 1-8 (100,200,300).

13. golf club head as claimed in claim 12 is characterized in that, described top and described bottom comprise top tubular structure (112,212,312) and bottom tubular structure (114,214,314) respectively.

14. golf club head as claimed in claim 13 is characterized in that, described top tubular structure and/or described bottom tubular structure comprise the leg that is in apart from ground different distance place (114A, 114B).

15. the one or more of described golf club head (200,300) as among the claim 13-14 is characterized in that, described top tubular structure and/or described bottom tubular structure comprise leg (212A, the 312A with at least one aperture (250,350), 214A, 314A).

16. golf club head as claimed in claim 15 is characterized in that, described at least one aperture is through hole or blind hole.

17. the one or more of described golf club head (200) as among the claim 15-16 is characterized in that described at least one aperture is arranged to have main shaft perpendicular to the ground (250A).

18. the one or more of described golf club head (300) as among the claim 15-16 is characterized in that described at least one aperture is arranged to have main shaft parallel to the ground (350A).

19. as the described golf club head of one or more of claims formerly, it is characterized in that, with the described top (12 of manufacturing, 112,212,312) and described bottom (14,114,214,314) one or more material is compared, described front portion (16,116,216,316) and described rear portion (18,118,218,318) make by the bigger material of one or more density.

20. as one or more of described golf club heads among the claim 1-18, it is characterized in that, compare with one or more material of making described top, described front portion (16,116,216,316), described rear portion (18,118,218,318) and described bottom (14,114,214,314) make by the bigger material of one or more density.

21., it is characterized in that its constitutes the head of push rod as the described golf club head of one or more of claims formerly.

22. a golf club head (200,300) comprises front portion (216,316), rear portion (218,318), top (212,312) and be arranged in the below on described top and the bottom (214 that vertically separates with described top, 314), described top and/or described bottom comprise tubular structure (212,312,214,314), described tubular structure comprises having at least one aperture (250,350) at least one leg (212A, 312A, 214A, 314A).

23. golf club head (200 as claimed in claim 22,300), it is characterized in that described top and described bottom comprise top tubular structure (212,312) and bottom tubular structure (214 respectively, 314), described top tubular structure and/or described bottom tubular structure comprise at least one leg (212A, the 312A with at least one aperture (250,350), 214A, 314A).

24. the one or more of described golf club head as among the claim 22-23 is characterized in that, described at least one aperture is through hole or blind hole.

25. the one or more of described golf club head (200) as among the claim 22-24 is characterized in that described at least one aperture is arranged to have main shaft perpendicular to the ground (250A).

26. the one or more of described golf club head (300) as among the claim 22-24 is characterized in that described at least one aperture is arranged to have main shaft parallel to the ground (350A).

27. the one or more of described golf club head as among the claim 22-26 is characterized in that, it constitutes the head of push rod.