CN1259113C

CN1259113C - Golf club head

Info

Publication number: CN1259113C
Application number: CNB2004100085970A
Authority: CN
Inventors: 今本泰范; 山岸久
Original assignee: Bridgestone Corp
Current assignee: Bridgestone Corp; Bridgestone Sports Co Ltd
Priority date: 2003-06-18
Filing date: 2004-05-13
Publication date: 2006-06-14
Anticipated expiration: 2024-05-13
Also published as: CN1572342A; TWM258770U

Abstract

Provided is a golf club head having a high coefficient of restitution.A golf club head 1 consists of: a front surface body 10 consisting of a titanium system metallic material 10; an FRP body 20; a metallic sole plate 30; and a weight material 40. The front surface body 10 includes: a face part 2; a metallic sole part 13; a metallic side part (toe) 14; a metallic crown part 15; a metallic side part (heel) 16; and a hosel part 6. A gap of about 4 to 12 mm is arranged between the front side 31 of the sole plate 30 and the metallic sole part 13, and this part is formed of the FRP body 20. It is preferable that the front surface body 10 is composed of a titanium alloy, and the sole plate 30 is made of stainless.

Description

Glof club head

Technical field

The present invention relates to hollow golf club head, particularly relate to the glof club head of wooden type or approximate with it shape.

Background technology

As the wooden type glof club head of service bar or alley bar etc., be extensive use of the metal system glof club head of hollow housing structure.In general, the glof club head of the wooden type of hollow comprises and impacts the face that ball is used, constitute the facial bizet of going up of glof club head, constitute the bottom of the bottom surface sections of glof club head, constitute the outstanding side, dorsal part of glof club head and, also have the bar connecting portion with the sidepiece of the side surface part of side.The bar axle inserts this sheath portion, and is fixing with bonding agent etc.Moreover, recently, the golf clubs that is called as multi-functional bar is also sold a lot on market, as a kind of multi-functional bar, there is the various types of golf clubs that is similar to the head (that is, face, bottom, sidepiece and bizet being arranged) of above-mentioned wooden type glof club head also on market, to sell.

As the metal that constitutes this hollow golf club head, can use aluminium alloy, stainless steel or titanium alloy, titanium alloy uses extensively especially in recent years.

In general, by strengthening the volume of hollow golf club head, can enlarge the striking surface core.If add large volume, then thereupon often cause the weight of glof club head to increase.Therefore, increase,, considered to adopt the proportion fiber-reinforced resin littler than above-mentioned metal as the constituent material of glof club head in order to prevent this weight.

Open in 2001-340499 number the spy, described glof club head, its face and bottom are metal system, other bizet, outstanding side and be carbon fiber-reinforced thermosetting resin (CFRP) system with the sidepiece of side.If bizet is taken as the CFRP system, then the bending of square stance bizet strengthens, and gets the angle thereby can improve, and strengthens recovery coefficient.But in this glof club head, the seam between bizet of being made by CFRP and sidepiece and the facial periphery is the butt joint shape.Seam portion between this bizet, sidepiece and face produces big stress significantly at square stance, and this junction surface might produce the danger of peeling off if use then repeatedly.

Open in 2003-62130 number the spy, glof club head has been described, its hat exterior region, end exterior region and both sides exterior region forge and make face component with titanium integratedly with face, engage the main body of being made by resin material and make it titanium system face component is continuous therewith, dispose aluminium sheet on the bottom.Because this face component comprises hat exterior region, end exterior region and both sides exterior region, so it is big to open the face component and the engaging force between this resin system body of CFRP system bizet in 2001-340499 number and the seam crossing between the metal system face than aforementioned spy.Moreover in the glof club head of jack per line, the aluminium sheet of its bottom is from descending side superimposed on titanium system face component.

Summary of the invention

Above-mentioned spy opens the glof club head of 2003-62130 communique, because aluminium sheet and face component are with rigidly connected, so the bending of square stance bottom side is very little on its end.The objective of the invention is to, provide a kind of crooked big, the glof club head that recovery coefficient is big in the square stance bottom side.

Glof club head of the present invention is the glof club head of hollow housing structure, face constitutes by the front body of being made by the titanium metalloid material of one with the exterior region that links to each other with face, on the bottom, dispose upwardly extending metal system base plate with this front body split and in front and back, other housing parts is a fiber-reinforced resin system, in the glof club head that constitutes by the way, it is characterized in that, this front body and this metal system base plate separate on the fore-and-aft direction of glof club head, and both engage by fiber-reinforced resin.

In glof club head of the present invention, because bending partly appears in the fiber-reinforced resin between square stance metal system front body and base plate, so its recovery coefficient becomes greatly, carry increases.

Fiber-reinforced resin part between this metal system front body and the base plate preferably caves in upward from the bottom surface of base plate and front body.Thus, even the bottom surface of glof club head strikes ground strongly, the fiber-reinforced resin part also is not easy damage.

In the present invention, preferably in front on the bizet and bottom of body, allow the width of glof club head fore-and-aft direction of bottom side and outstanding side greater than the width of the glof club head fore-and-aft direction of each other central portion.Thus, can strengthen the moment of inertia of glof club head.

The present invention is suitable for large-scale club head, though the volume of this large-scale club head is about 300～500cc, must be suppressed to weight about 180～210g.

Description of drawings

Fig. 1 is the stereogram according to the glof club head of embodiment.

Fig. 2 is the stereogram of seeing from the place ahead of the front body of the glof club head of Fig. 1 and base plate.

Fig. 3 is the stereogram of seeing from the rear of the front body of the glof club head of Fig. 1.

(a) figure is the vertical view of glof club head among Fig. 4, and (b) figure is the upward view of glof club head.

(a) figure is the V-V line profile of Fig. 4 (a) among Fig. 5, and (b) figure, (c) figure are the enlarged drawings of B part and the C part of (a) figure.

Fig. 6 is the profile of the manufacture method of expression glof club head of the present invention.

(a) and (b), (c), (d), (e) figure are the key diagrams of pre-soaked resin sheet material used in the manufacturing of FRP body of glof club head of the present invention among Fig. 7.

The specific embodiment

Below, describe with regard to embodiment with reference to accompanying drawing.Fig. 1 is the stereogram according to the glof club head of embodiment, Fig. 2 is the stereogram that the place ahead of the front body of glof club head from then on and base plate is seen, Fig. 3 is the stereogram of seeing from the rear of front body, Fig. 4 (a) is the vertical view of this glof club head, Fig. 4 (b) is the upward view of this glof club head, Fig. 5 (a) is the V-V line profile of Fig. 4 (a), Fig. 5 (b), (c) be the enlarged drawing of B part and the C part of Fig. 5 (a), Fig. 6 is the profile of manufacture method of this glof club head of expression, and Fig. 7 is the key diagram of pre-soaked resin sheet material used in the manufacturing of FRP body of this glof club head.

This glof club head 1 is the wooden type glof club head of hollow housing structure, and it comprises face 2, bottom 3, sidepiece 4, bizet 5 and bar connecting portion 6.

Face 2 is faces of batting, is provided with not shown groove (groove), and bottom 3 constitutes the bottom surface sections of glof club heads, and sidepiece 4 constitutes outstanding side and follows the side surface part of side and back side, and it is facial that bizet 5 constitutes going up of glof club heads.Insert club in bar connecting portion 6, this club is by adhesive securement.

The front body 10 that this glof club head 1 is made by titanium metalloid material (titanium alloy or pure titanium), fiber-reinforced resin body 20 (hereinafter referred to as the FRP body), metal base plate 30 and counterweight 40 are formed.The weight of this front body is 20～70% of the weight of glof club head, preferably its 30～60%.

As Fig. 2,3 expressed, front body 10 comprised face 2, metal bottom 13, metal sidepiece (outstanding side) 14, metal bizet 15, metal sidepiece (with side) 16 and bar connecting portion 6.

Metal bottom 13 constitutes the exterior region of bottom 3.Metal sidepiece 14,16 constitutes the exterior region of sidepiece 4.Metal bizet 15 constitutes the exterior region of bizet 5.Metal bizet 15 links to each other with metal sidepiece (with side) 16 with metal sidepiece (outstanding side) 14.Metal sidepiece (outstanding side) 14 links to each other with metal bottom 13 respectively with metal sidepiece (with side) 16.This metal sidepiece 14,16 and metal bottom 13 link to each other with facial 2.

This metal bottom 13 and metal bizet 15, it is in outstanding side with width before and after the side big (with the width of facial 2 orthogonal directions), and width is little before and after in addition central portion 13a, the 15a.Thus, the moment of inertia of glof club head strengthens.Moreover from giving prominence to side and following side to this central portion 13a, 15a, width reduces gradually before and after this.

Before and after the outstanding length of little this central portion 13a, the 15a of width with direction, on the bizet preferably about 50～85% of the Breadth Maximum of front body 10, on the bottom preferably about 55～80% of the Breadth Maximum of front body 10.

The front and back width of this central portion 15a of metal bizet 15, preferably 50～95% of the front and back width of the maximum of front body 10, particularly about 55～70%, the front and back width of this central portion 13a of metal bottom 13 is preferably before and after front body 10 maximum 50～95% of width, and particularly about 55～65%.

This front body 10 especially preferably integrally forms by forging or casting.Moreover when forging, the bar connecting portion forms by machining.But the front body also can constitute by a plurality of parts that modes such as welding engage other shaping.

Shown in clear and definite among Fig. 5, between the front 31 and metal bottom 13 of base plate 30, on average leave the interval of 4～12mm, particularly on average leave the interval about 7～9mm.Between exists FRP body 20.FRP body 20 between the front 31 of this metal bottom 13 and base plate 30 caves in upward from the bottom surface of this metal bottom 13 and base plate 30.The mean depth of this depression is 0.7～1.5mm preferably.Thus, because FRP body 20 produces depression, so can prevent when club hits ground this depressed part FRP body 20 strong impaction ground and the damage that causes.Moreover the bottom surface of the FRP body 20 of this depressed part as shown in Fig. 5 (c), is bent into arcuation on the fore-and-aft direction of glof club head.

The back 34 of base plate 30 is positioned near on the aftermost position of glof club head 1, but is positioned at than the rearmost end of glof club head 1 a little forwards on 1 the position.

Base plate 30 is disposed at the outstanding with near the band central portion of direction of bottom 13.As shown in Figure 2, this base plate 30 is roughly quadrangle, and it comprises and this metal bottom 13 front 31 in opposite directions, the

side

32,33 and the back 34 of rearward extending from the two ends in this front 31.Front 31 is longer than back 34, and both are approaching more more backward for

side

32,33, thereby base plate 30 plan view shapes are roughly trapezoidal.Base plate 30 is copied the bottom surface ground of glof club head 1 and in addition crooked.

The length in the front 31 of base plate 30, preferably the aforementioned central portion 13a of metal bottom 13 outstanding with direction length 50～75% especially preferably its 60～75%, the length of back 34 preferably these front 31 length 50～80%, especially preferably its 55～75%.

The length of the fore-and-aft direction of base plate 30, preferably 65～90% of the maximum length of the fore-and-aft direction of glof club head 1, especially preferably its 75～85%.

This base plate 30 is made by metal materials such as stainless steel, aluminium, copper alloy, titanium metalloid materials.

On the rear portion of this base plate 30, erect the cylindrical portion 35 be provided with in the glof club head 1, in the endoporus of this cylindrical portion 35, by being screwed into mode fixed weight part 40.

Be provided with flange part 41 in the lower end of this counterweight 40, be provided with the end difference 35a that takes up this flange part 41 at the lower edge of the endoporus of aforementioned cylindrical portion 35.

Around cylindrical portion 35, base plate 30 more or less caves in.

Counterweight 40 is made than base plate 30 bigger metals by proportion, for example tungsten or tungsten alloy.The proportion of counterweight 40 is preferably more than 10, and especially preferably about 10～13.The center of counterweight 40 is positioned on the central portion rear positions backward than the fore-and-aft direction of glof club head 1.

Below, describe with regard to the manufacture method of this glof club head.

For making glof club head 1, use metal front body 10 and base plate 30 and a plurality of pre-soaked resin sheet material.

Fig. 7 is the vertical view of the pre-soaked resin sheet material representing in the present embodiment to be adopted.Pre-soaked resin sheet material 51 among Fig. 7 (a) is to soak into Thermocurable synthetic resin in carbon cloth, and the pre-soaked resin sheet material the 52,53,54, the 60th among Fig. 7 (b), (c), (d), (e) draws carbon fiber in one direction and then soaks into curing property synthetic resin together.Pre-soaked resin sheet material 51～55 constitutes the following half side of FRP bodies 20, and they are respectively arranged with and are used for the circular open 50 of the cylindrical portion 35 by base plate 30.

Pre-soaked resin sheet material 51 directly coincides with on the base plate 30, and it is roughly trapezoidal, than these base plate 30 big circles.

Pre-soaked resin sheet material 52,53,54 order according to this overlaps on pre-soaked resin sheet material 51.These pre-soaked resin sheet materials 52～54 are the Lower Half of formation FRP body 20, and have the size of the Lower Half of the FRP body after the expansion.On the both sides and trailing edge of these pre-soaked resin sheet materials 52～54, cut a plurality of joint-cuttings 55 with predetermined distance, along the inner face of metal mould for formation, constitute the both sides and the trailing edge of pre-soaked resin sheet material 52～54 in the mode of easy bending.

The carbon fiber of pre-soaked resin sheet material 52 is arranged with on the direction outstanding; The carbon fiber of pre-soaked resin sheet material 53 is with respect to the outstanding direction of following, in the clockwise direction with 60 ° of crossing orientations of tilting; The carbon fiber of pre-soaked resin sheet material 54 is with respect to the outstanding direction of following, in the counterclockwise direction with 60 ° of crossing orientations of tilting.

Pre-soaked resin sheet material 60 is used to constitute the upper face side of FRP body 20, the roughly semicircular nick shaped portion 61 that it is provided with that bar connecting portion 6 cooperates.

When making glof club head 1, at first base plate 30 is installed on the metal pattern of cavity surface of Bottom Shape with glof club head 1 and side shape, overlap pre-soaked resin sheet material 51～54 successively.Then, carry out short time heating, at first make these pre-soaked resin sheet material 51～54 semi-solid preparations, as shown in Figure 6, be configured as the shape of the bottom 22 of FRP body 20, and make itself and base plate 30 being integral.

About pre-soaked resin sheet material 60, also be installed on the metal pattern of cavity surface with bizet shape, carry out short time heating and make its semi-solid preparation, as shown in Figure 6, be configured as the shape of the bizet 21 of FRP body 20.

Then, these pre-soaked resin sheet materials 60, band base plate pre-soaked resin sheet material 51～54 and metal system front body 10, be installed on the metal mould for formation of glof club head 1 (omit and illustrate).

At this moment, the leading edge of the bizet 21 that will be made up of pre-soaked resin sheet material 60 overlaps below metal bizet 15 (bar head medial surface).In addition, the leading edge of the bottom 22 that will be made up of pre-soaked resin sheet material 51～54 overlaps on metal bottom 13 (bar head medial surface).Moreover as shown in Figure 6, the leading edge of bottom 22 is forwards stretched out from the front 31 of base plate 30, and the trailing edge of bottom 22 stretches out backward from the back 34 of base plate 30.Outside with respect to this bottom trailing edge of 22 overlaps with the trailing edge of bizet 21.

Heat shaping dies below, and the gas pressure of air etc. is imported in the shaping dies by cylindrical portion 35, bizet of being made up of semi-solid preparation pre-soaked resin sheet material 21 and bottom 22 are pressed against on the shaping dies inner face, the pre-soaked resin sheet material is fully solidified, and bizet 21 and bottom 22 are fixed on the front body 10, bizet 21 and bottom 22 are bonded with each other.

When being shaped, the part of the synthetic resin in the pre-soaked resin sheet material enters between metal bottom 13 and the base plate 30, and as shown in Fig. 5 (c), FRP body 20 forms the depressed part that is bent into arcuation.

Carry out the demoulding then, counterweight 40 spirals are installed on the cylindrical portion 35, remove burr, make goods glof club head 1 by implementing fine finishining processing such as application.

In the glof club head that so constitutes owing to be connected part on the front body 10, comprise and base plate 30 between part all be FRP, so at square stance, the bar head is crooked easily, can becomes high bounce-back, and can deepen center of gravity.Particularly in the present embodiment,, hit the angle, increase flying distance so can strengthen because the bizet of FRP body 20 is crooked easily.

Moreover, in the embodiment shown in the figure, front body 10 is taken as the titanium alloys of weight 100g, base plate 30 is taken as the stainless steel of weight 34g, counterweight is taken as the tungsten alloy system of weight 24g, interval between the metal bottom 13 of front body 10 and the base plate 30 is taken as 8.0mm, and when making the glof club head 1 of volume 370cc, gross weight 198g, its recovery coefficient is 0.860.

Except that the interval between the metal bottom of this base plate and front body being taken as zero, when making same glof club head 1, its recovery coefficient is 0.855.

As previously discussed, by the present invention, then can provide a kind of glof club head, it is crooked big square stance, and recovery coefficient is big.

Claims

1. glof club head, this glof club head is the hollow housing structure, its face constitutes by the front body of being made by the titanium metalloid material of one with the exterior region that links to each other with face, on the bottom, disposing upwardly extending metal system base plate in front and back with this front body split, other housing parts is a fiber-reinforced resin system, in the glof club head that constitutes by the way, it is characterized in that, this front body and this metal system base plate produce isolation on the fore-and-aft direction of glof club head, both engage by fiber-reinforced resin.

2. glof club head according to claim 1 is characterized in that, this base plate is made by the high specific gravity metal material that proportion is higher than this titanium metalloid material.

3. glof club head according to claim 1 is characterized in that, this base plate is made by the high specific gravity stainless steel material that proportion is higher than this titanium metalloid material.

4. glof club head according to claim 2 is characterized in that, on the rear portion of this base plate, is fixed with by proportion and is higher than the counterweight that the high specific gravity material of this base plate is made.

5. glof club head according to claim 3 is characterized in that, on the rear portion of this base plate, is fixed with by proportion and is higher than the counterweight that the high specific gravity material of this base plate is made.

6. glof club head according to claim 4 is characterized in that, on the cylindrical portion that this counterweight is installed in this base plate passes through mutually.

7. glof club head according to claim 5 is characterized in that, on the cylindrical portion that this counterweight is installed in this base plate passes through mutually.

8. glof club head according to claim 1 is characterized in that, the fiber-reinforced resin between this front body and base plate caves in upward from the bottom surface of base plate and front body.

9. glof club head according to claim 8 is characterized in that, this base plate is made by the high specific gravity metal material that proportion is higher than this titanium metalloid material.

10. glof club head according to claim 8 is characterized in that, this base plate is higher than the hyperbaric stainless steel material of this titanium metalloid material by proportion and makes.

11. glof club head according to claim 9 is characterized in that, on the rear portion of this base plate, is fixed with by proportion and is higher than the counterweight that the high specific gravity material of this base plate is made.

12. glof club head according to claim 10 is characterized in that, on the rear portion of this base plate, is fixed with by proportion and is higher than the counterweight that the high specific gravity material of this base plate is made.

13. glof club head according to claim 11 is characterized in that, on the cylindrical portion that this counterweight is installed in this base plate passes through mutually.

14. glof club head according to claim 12 is characterized in that, on the cylindrical portion that this counterweight is installed in this base plate passes through mutually.

15. glof club head according to claim 1 is characterized in that, the volume of this glof club head is 300～500cc, and weight is 180～210g.

16. glof club head according to claim 15 is characterized in that, this base plate is made by the high specific gravity metal material that proportion is higher than this titanium metalloid material.

17. glof club head according to claim 15, it is characterized in that, this base plate is made by the high specific gravity stainless steel material that proportion is higher than this titanium metalloid material, on the rear portion of this base plate, be fixed with by proportion and be higher than the counterweight that the high specific gravity material of this base plate is made, on the cylindrical portion that this counterweight is installed in this base plate passes through mutually, and the fiber-reinforced resin between this front body and base plate caves in upward from the bottom surface of base plate and front body.

18. glof club head according to claim 15 is characterized in that, the fiber-reinforced resin between this front body and the base plate caves in upward from the bottom surface of base plate and front body.

19. glof club head according to claim 16 is characterized in that, the fiber-reinforced resin between this front body and base plate caves in upward from the bottom surface of base plate and front body.