JPS5917366A - Structure of golf wood club head - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] This invention relates to fiber reinforced plastic deck (hereinafter referred to as FRP).
,! :Abbreviation)/1' Concerning the structure of the golf club head 1~, which has an outer shell, the head body is made up of 1$
``-R[) We have devised a layered structure of reinforcing fibers on the outer shell'', which is similar to the white clay of item 18.

Conventionally, this type of wood club head has a structure in which the outer shell of the head body is made of FRP and the core is filled with foamed synthetic resin, as disclosed in Japanese Patent Publication No. 51-21436. There are some that have

However, as is well known, in the conventional J:Una e, due to the complexity of the unique shape of the outer periphery of the head, there are not only various rotations in the specific molding method, but also an increase in inertia. In order to increase the flight distance N1, a hardened FRP base plate is attached to the base part where maximum strength is required.
“It takes time and effort to insert into the mold,” 11.
I put the FRP molding material diagonally on top of it and it hardens due to flow during hot pressure. q Misalignment easily occurs, and since the face plate is a highly rigid member, it is difficult to mold it to the mold surface.
B Match the shape according to the number of the club! There were various problems such as 1 and c, which required a large amount of labor and expense to mold.

This invention (j, 1) is aimed at solving the conventional drawbacks mentioned above, and its gist is that the head body is attached to a foamed synthetic resin core and the surroundings of the core. The laminated structure of the inner shell and outer shell is composed of an RP outer shell, and the reinforcing fibers for the FRP outer shell are composed of two to three layers of vermilion 1'-woven cloth, and Head body)]:-
Twisting 5 to 15 layers only on the side part [1 rimako is 1]
-Using Dong Cloth, as described above, is characterized by using 5 to 12 layers of hollow weave cloth as the reinforcing fiber body for the RP inner shell so that it has a different type of construction than the neck part.

Next, the present invention will be explained based on the illustrated embodiments. As shown in FIGS. It is. The head main body 1 is made of a material such as an FRP outer shell 2 or a foamed synthetic resin.
The first 1-1'<r' 21 constituting the fermented outer shell
The second FRP 22 that constitutes the relatively thick inner shell
The RP outer shell 21a of the part corresponding to the frame part 1a is a thick part.
The sole portion 11) and the hack portion 1c are provided with a sole weight member 4 made of metal material such as brass, and a backway 1 to
The members 5 are respectively embedded and fixed. Furthermore, in the figure, 6 is a club shaft inserted and fixed to the neck portion 1d of the head body 1, and 7 is the club shaft t? 71-6 and the neck portion 1d of the head main body (11 = y-shaped protective body that protects the periphery of the head body portion 1d).

1. In other words, in order to manufacture the wood club head described above, as shown in FIG. 0!1 f: 0!1 f: 2 to 3 Sateen weave cloth is used for the entire circumference (sole surface may be omitted) as reinforcing fibers constituting the thin outer shell of the head, which is divided into front and rear halves in the direction:
A pair of divided bodies 11 and 12 can be made from the RP molding material. When separately hot-press molded at +-J^ temperature and high pressure, the front part corresponding to the face part of the head body is formed. The divided body 120 portion 12a has a twisted yarn cloth or 1 piece 1-
Another 85 to 15 layers of reinforcing fibers made of ping cloth are layered to form a thick layer. On the other hand, prepreg or liquid uncured synthetic resin is applied to reinforcing fibers around J, .) shown in FIG. The second FRP molding material 14 impregnated with the inner shell is wound and covered with the second FRP molding material 14 to form the inner molding material 15. The arrangement of reinforcing fibers in material utilization 14 is as follows:
5) J shown in the figure: sea urchin, 7J-Bonnl1iIIIl, 5 to 15 made of appropriate combinations of glass fiber or Kevlar, etc.
Covering almost the entire circumference of the core material 13 except for a portion 13a corresponding to the neck of the head body with a layered bag-woven cloth 14a,
The neck portion 13a of δ1413 is covered with another type of bag weave f]su 141), and while pulling the two bag cloths +4a and 14b so that their end edges partially overlap each other, Squeeze it tightly to the circumferential surface of the core material 13! Ru. Next, the inner molding material 15 is inserted into the hollow interior formed by the pair of divided bodies 11 and 12 using an appropriate mold 16 as shown in FIG. 1) and 2 (19a) show a wood club head similar to the one shown in Fig. 1).

By the way, in the above embodiment, when molding the divided body constituting the head outer shell, the carbon woven material t is used as the reinforcing fiber body for the first "I'< I) molding material. Or a combination of carbon 41i navy blue and lath wear [
! 4 Sateen weave [using 1 step - (arranged so that the overall thickness is 0.5 to 1.0 mm, and increasing the surface ゛ V - smooth bamboo and shape following)] The thickness of the part corresponding to the 1-space part is arranged so that it is 3 to 8WIIll, and in order to move the center of gravity downward, the thick part is moved from the top to the bottom (so that it becomes thicker at J). distribution (1-1≦]-2).On the other hand, the "R1" inner shell, which is wrapped and coated around the core material, has a fiber content of bag weave cloth of 96 bundles x 6 (HH) fibers,
/Bundle, arranged so that the thickness is 3 to 10 m1, preferably 4 to 7 cm [), and the amount of fiber in the part corresponding to the netter part is 32 m
Bundle When molding the body, 1, 2 is used for internal molding, 1 of 1: RP molding material or 20th FRP molding material is used (, - Incorporated I is embedded (
2, it is possible to integrate l\rad molding and direction 11. In addition, if a delicate, non-containing colored synthetic resin layer is formed on the outside of the FRP outer shell, that is, on the outer surface, the appearance (1
To improve 1) (゛Kiro.

This defense is based on the fact that, as explained above, during the molding of the head outer shell and the head inner shell formed around the core material, which are hardened and molded separately in advance, By changing the suspension and converting the whole into a 4T, high quality F l'< P with rich surface smoothness can be obtained, and the thickness of the head nose part of the outer shell is also reduced. (I-J retains the impact when the ball is hit) and transmits the elastic fluid to the entire outer shell, which improves the feel of the inner shell. The rigidity of the shell is increased by the wall thickness Iff (11 degrees) 1
can be connected to.

In addition, since the core is made of foamed synthetic resin, the impact of each bullet when hitting the ball is reflected on the surface of the internal bubbles, scattering and scattering (0L7
This has excellent practical effects such as 4T, which can cushion the impact with just 1υ1 hold.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of a golf wood club head according to the present invention, FIG. 2 is an enlarged cross-sectional view of the main part, and FIGS. 3 to 6 are explanations showing the manufacturing process according to the invention. It is a diagram. 1...Head body, la...) Clothes part, 2...
F RP outer shell. 21...Outer shell, 21a...Face equivalent portion 22...Inner shell, 3...Core material, 11.12...Divided body, 12a...Thick part, 1
3...Core material, 13a...Neck portion equivalent, 14
... [R1] Molding molding rate, 14a, 14b -... Reinforcing fiber, 15... Monthly rate for internal molding. Figure 3 Figure 4/41:) 5 Proceedings Amendment Document June 6, 1980 Patent Office Ai Palace 1, Case Description 1988 Patent Application @ ] 27242 No. 2, Name of Invention Golf Wood Structure of the club head; (Supplement 11) Patent applicant name (407) Nippon Gakki Mfg. Co., Ltd. 91, Agent 5, Amendment order 1-1fτ1 (Voluntary) (-1 Month of amendment All books and drawings. 7. Supplementary details Exhibit 1. Name of the invention Structure of golf wood club head 2. Claims (1) The head body is made of a foamed synthetic resin core. , an inner shell LL formed around the core, an outer shell 1>r, and an FRP outer shell having a 6-layered laminated structure, - the reinforcing fiber for the FRP outer shell is a satin weave cloth l' head Only the face of the main body is made of twisted black yarn or roving yarn.
The hollow weave cloth is used as the reinforcing fiber for the FRP inner shell.
The structure of a golf wood club head is characterized by: DETAILED DESCRIPTION OF THE INVENTION This invention relates to a fiber reinforced plastic (hereinafter referred to as F Rl)
Regarding the structure of a golf club with an outer shell, the FRP outer shell that constitutes the head body,
By devising a laminated structure of reinforcing fibers in No. 9, the quality was improved. Conventionally, in a wood club head with a diameter of σ, the outer shell of the head body is made of FRP, and the core is filled with foamed synthetic resin, as disclosed in Japanese Patent Publication No. 51-21436. There are some structures that have this structure. However, unlike 't1, in such conventional products, there is only one type of reinforcing fiber, and it also serves as a lubricant for the reinforcement of the outer shell structure. The reinforcing fibers have a length of io
Since the diameter is about 8 mm, the reinforcing effect of the outer shell structure is insufficient, and the ball hitting efficiency is poor because the ball hitting energy or ball impact is not sufficiently transmitted between the rad ball surface and the shirt 1-. In addition, the outer shell + M construction and the core have 10tlIIl
Since a certain amount of glass powder or ceramic powder is mixed in, there are various problems such as an excessive increase in the weight of the bench body. The present invention aims to eliminate the above-mentioned conventional drawbacks, and its gist is that the head body is made up of a foamed synthetic resin core, an inner shell formed around the core, and an inner shell formed around the core. It is composed of an FRP outer shell having a laminated structure consisting of an outer shell, and the reinforcing fibers for the FRP outer shell are composed of 2 to 3 layers of satin cloth, and 5 to 15 While a layered twisted yarn cloth or roving cloth is used, a 5 to 12 layered bag weave cloth is used on the reinforcing mat body for the FRP inner shell. It is characterized by the different types of configurations that can be used. Next, the present invention will be explained based on illustrated embodiments.
As shown in Figures 1 and 2, 1 in the figure is the head body of a wood club that has been made by cutting the culm. The head body 1 is composed of a core material 3 such as an FRP outer shell 2 and a foamed synthetic resin 4f, and the F r<P outer shell 2 is
It has a laminated structure with a first l'RP21 forming a thin outer shell and a second l'RP22 forming a relatively thick inner shell, and corresponds to the face portion 1a. FR of
The P outer shell 21a is a thick part, and the sole part 1b and the back part 1C (1, sole made of metal such as brass) are 1 part + 44 and hackway 1 part + A5h\, respectively. Further, in the figure, 6 indicates the neck portion 1 of the head body 1 (1), which is inserted and fixed into the club shirt 1, and 7 indicates the club head body neck portion 1d of the club shirt 1. It is a cap-shaped retainer that protects the area around the early mounting part of the wood club. Both U
Using a mold (not shown) that is removed from the mold, a 9-inch spatula is preferably divided into front and rear halves in the direction of ball hitting. A pair of divided bodies 11.1 made of a first FRP molding material using two to three layers of satin cloth as reinforcing fibers constituting the outer shell (the sole surface may not be used)
2 can be formed separately under high temperature and high pressure, and an additional 5 reinforcing fibers 1 made of twisted yarn cloth or roving cloth are added to the portion 12a of the front split body 12 corresponding to the face portion of the head body. ~15 sheets are piled up and molded to form a thick layer.Meanwhile, as shown in FIG.
The inner molding material 15 is formed by coating the second FRP molding material four times to construct and cover the inner shell in which the reinforcing fibers are impregnated with prepreg or liquid uncured synthetic resin. At this time, the arrangement of the second FRP molding material 4-strong fibers constituting the inner shell is shown in FIG. ~15 layers of bag weaving [! Center 14a + A13
The core material 13 is wrapped around almost the entire circumference of the part 13a corresponding to the head main body spherical body part except for the part corresponding to the neck part 13b of the head main body 13, and the neck part corresponding part 13b of the core material 13 is covered with a different type of hollow weave cloth 14b. Along with this, both double weaving cloth 14a1
In order to equalize the wXN density of the neck part and the ball hitting body part, it is possible to make the wXN density of the neck part and the ball hitting body part equal by tightening them while pulling them so that the end edges of the part 14b partially overlap. suitable. Next, the internal molding material 1
5 is inserted and fitted into the hollow interior formed by the pair of divided bodies 11 and 12 using an appropriate mold 16, as shown in FIG. 6, and the two are integrated by hot pressure. Especially J:
Thus, a wood club head like the one shown in FIGS. 1 and 2 can be obtained. By the way, in the tenth embodiment, in constructing the head outer shell, the first FRl) molding material r used is
As a reinforcing fiber body for 1, carbon fiber or a satin weave made of a combination of carbon fiber 1 and crow fiber is used, and the overall thickness is 0.5 to 1.011111 and 4.
In addition to increasing the surface smoothness and shape tracking 11, the thickness of the portion corresponding to the face is 13 to 8 mm, and the thickness is increased in order to shift the center of gravity downward. The distribution becomes thicker from the top to the bottom (T
+≦T2). On the other hand, the FRP inner shell wrapped around the core material is made of 96 bundles x GOOO fibers/bundle of hollow weave cloth, with a thickness of 3 to 1 mm, preferably 4 to 7 mm. and the textile part corresponding to the neck part is 3
2 bundles x 3000 fibers tlIi/bundle are stacked relatively thickly. In addition, when placing the sole weight member or the back weight member at an appropriate position on the head body, the first FRP molding material or the second FRP molding material is used when molding the divided body or when molding the internal molding material. By incorporating and embedding it in the FRP molding material, it is possible to integrate the head at the same time as molding. Furthermore, the appearance can be improved by forming a fiber-free colored synthetic resin layer on the outside of the FRP outer shell, that is, on the outer surface. This invention has two aspects: When forming the head outer shell and the head inner shell formed around the core material, the type, knitting, and fiber product of the reinforcing fibers in each part are different. Since the whole is integrated under heat and pressure, a high-quality FRP with a smooth surface can be obtained, and the thicker head face of the outer shell allows it to withstand the impact of 41 balls 1r, '+. This makes it possible to transmit the elastic waves to the entire outer shell, and improve the feeling. It can be connected to the club shaft. ;l:
j The core part is made of foamed synthetic resin. Second, the bullet v1 wave of the impact of the batted ball lh is scattered on the internal air bubble surface (・back mouth・1、l
, it is possible to cross the phase n, and this can be expected to alleviate the impact. 1011 has an effect superior to that of J. 1. Brief description of the drawings Fig. 1 is a perspective view showing one embodiment of a golf wood club head according to the present invention, Fig. 2 is an enlarged cross-sectional view of the main part, and Figs. 3 to 6 are the present invention. FIG. 3 is an explanatory diagram showing the manufacturing process. 1... Head main body, 1a...) 1-base part, 2... FRP outer shell, 21... Outer shell, 21a... Face equivalent portion 22... Inner shell, 3... Core Material, 11. 12... Divided body, 12a... Thick part, 13... Core material, 13a... Core material corresponding to the spherical body part, 13b... Core material corresponding to the neck part, 14. ...FRP molding material, 14a, 14b...Reinforcement 11.15...Internal molding material.

Claims (1)

[Claims] The head body is made of FRP with a foamed synthetic resin core and a laminated structure of an inner shell and an outer shell formed around the core.
The reinforcing fibers for the FRP outer shell are made of satin weave cloth, and twisted yarn claws or roving threads are used only in the head body foot part, while the FRP inner shell 4114 i% of a wood club head for golf, characterized in that a hollow weave cloth is used as a reinforcing fiber body so that the neck and other parts are made separately.