TWI304353B - Golf club head - Google Patents

Description

1304353 IX. Description of the Invention: [Technical Field] The present invention relates to a club head of a golf club which is implemented in a metal outer casing structure and which suitably improves the surface casing, even if it is hit by a different position of the surface casing In the case of a golf ball, the difference in flight distance can also be made smaller. [Prior Art] ❿

/The head of a golf club that is a shell structure, because it can increase the flying distance of the golf ball while being lightweight, so it is commonly known as the type of kick-off wood pole array VER), and various kinds of metal The head of the golf club of the outer casing structure is joined to a plurality of components, such as a surface outer casing, a crown outer casing, a bottom outer casing, and a socket outer casing, and the head body. Figure 构成 is a structural diagram of the golf club's pole view of the metal shell structure of (4). The opposite end portions of the surface outer casing 12, the crown outer casing 13, the bottom outer casing 14, and the socket outer casing 15 are joined by welding, and the joint portion is post-grinded to complete the production of the club head u. Furthermore, the extension portion 15a of the socket housing 15 is connected to the inner bottom of the bottom end housing W. In addition, the front end of the long handle of the club is inserted into the core hole i5b formed on the socket housing 15 to complete the golf. The production of the club. The golf club rod 11' of the prior metal outer casing structure thus constructed is such that the thickness of the surface outer casing 12 is thinned by increasing the flying distance, and the rigidity is lowered to make the surface outer casing 12 easy to bend. When the rigidity of the surface is reduced, the rigidity of the center is the most flexible, and the more it becomes more and more difficult to bend toward the circumference of 104877.doc 1304353', and the larger the amount of bending, the greater the rebound force, so you can borrow The flying distance is increased by hitting the ball with the center. However, although the thickness of the surface outer casing 12 is reduced as described above to reduce the rigidity, the flying distance of the golf ball generated by the center shot can be increased, but the central portion is durable due to the large amount of bending. Reduced sexuality,

* The problem of easy to break in the part of the sea. As a method for solving this problem, an attempt has been made to form an annular or circular thick portion at the center. In the case of increasing the thickness of the annular region between the central region and the outer edge region, it is possible to suppress deformation and improve durability (for example, Patent Document 1). [Patent Document 1] -33 1051 [Problem to be Solved by the Invention] Fig. is a view showing a state in which the surface outer casing 12 of the improved golf club head η is formed, and a broken line at the outer edge portion to indicate the surface outer casing a and the cymbal The joint portion of the outer casing 13, the bottom outer casing 14, and the socket outer casing 15, the inner loop wire forming the thick portion 12a of the inner surface of the inner surface of the outer surface casing 2, and the outer nuclear line 113 are indicated by broken lines. Therefore, the surface outer casing thus constructed Therefore, the rigidity of the outer peripheral portion and the central portion becomes larger. If the golf club is used as described above, the golf club is hit by the club head u, and when the hitting point is the center of the dessert, the hitting stress is concentrated at the center. Therefore, the maximum repulsive force can be obtained, and the flying distance can be increased, and the deformation of the surface outer casing 12 can be suppressed by the thick portion 12a, thereby improving durability. However, as shown in Fig. 16(A), if the golf ball is Batting point When the head toe side is increased and the ball striking force F is increased, the stress Fa of the toe portion of the thick portion l2a is bent laterally, and the head and the heel are laterally separated from each other by 1〇4877.doc 1304353 stress Fb bent in the direction of the heart. That is, the center portion of the surface outer casing 12 is in a twisted state, and a force couple is generated, and the toe side of the club head and the heel side of the club head are bent in opposite directions, and deformation occurs. The concentration of the ball striking stress is reduced to reduce the rebound force. As shown in Fig. 16(B), the same is true when the hitting point sp is located on the heel side of the head, since it is generated in the thick portion 12a. The force occasionally causes the rebound force of the surface outer casing 12 to decrease. The larger area occupied by the thick portion 12a in the surface outer casing 12 is also the main reason, but the shape of the thick portion 12a has a large influence thereon. The surface outer casing 12 is easily bent by lowering the rigidity, and a large repulsive force can be obtained. However, in the above-described prior configuration, the thick portion 12a becomes a resisting body that hinders easy bowing, resulting in the toe of the club head. The rigidity of the side of the part and the heel side of the club head increases. Therefore, In the previous club head of the golf club, the flight distance generated by the center ball hitting and the flight distance generated by the toe side wire side of the club head are greatly different. In view of these previous problems, the rigidity of the central portion of the surface shell is increased, while the flight distance generated by the center shot is minimized and the ball is hit by the toe side and the heel side of the club head. The purpose of the present invention is to solve the above problems by various methods described below. The club head of the golf club of the invention has a hollow structure formed by a metal outer casing structure, and a thick portion is formed in a longitudinal direction substantially at the center of the inner surface of the batter and the back surface casing. 104877.doc 1304353 Preferably, the loft angle is other than the thick portion of the crown casing, and the thick portion is formed in the head of the golf club and the bottom end casing. Preferably, the thickness of the outer surface of the golf club head is 2.5 mm or less. Preferably, it is less than 150 in the head of the golf club. In the head of the above-mentioned Malfoy club of 7^9, the thick portion of the inner surface of the y烕 surface outer casing is joined by welding. In the head of the above golf club, the thick wall portion of the surface outer casing is integrally formed by forging or casting w. Preferably, in the head of the above golf club, the material of the thick portion is different from the material of the surface outer casing. According to the present invention, the golf club head is provided by a metal outer casing structure, and the octagonal structure is formed, which comprises a hitting outer shell, and the surface outer shell has a longitudinal outer shell. The direction is located at a thick portion of the inner portion of the inner direction of the inner wall of the inner wall of the inner wall of the inner wall. The line symmetry 'is formed within a range of 50% of the lateral length of the surface envelope. Preferably, the U-food is in the head of the above-mentioned ancient ..^ + ^ r ^ golf club, the surface shell further has a thick-walled portion and opens a gentleman _ ^成之; The thin portion of the toe side and the thin portion of the heel side of the club head satisfy the following formula. , (2) thin toe on the toe side. 2tB^tA^0.8tB0.2tB^tc^0.8tB Here, tB is the maximum thickness of the thick portion, tA is the thickness of the head I04877.doc 1304353, Tc is the thickness of the thin portion of the heel side of the club head. [Effects of the Invention] According to the present invention, the rigidity of the central portion of the surface outer casing can be improved, and at the same time, the difference between the flying distance generated by the center portion hitting and the flying distance between the two side portions and the heel hitting ball can be reduced. Therefore, the ball striking performance of the club head of the metal peripheral structure can be improved. [Embodiment] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 to 3 are views showing the configuration of a head body of a metal casing structure formed according to a first embodiment of the present invention, by welding and mounting a surface casing 2, a crown casing 3, a bottom casing 4, and a socket casing. 5 is open to the opposite end, and the joint is ground to complete the production of the head i of the golf club. Furthermore, 'the front end 5& of the socket housing 5 is welded to the inner bottom of the bottom end housing 4'. On the other hand, the front end of the long rod of the club is inserted into the core hole 5b formed in the socket housing 5, and is completed. The production of golf clubs. Further, a thick portion is formed in a longitudinal direction substantially at the center of the inner surface of the surface outer casing 2, and the thick portion can be formed by welding, or can be integrally formed by forging or casting. The part 2a can use the same material as the surface outer casing 2, and can also use raw materials of different materials. 2 is a view showing a state in which the head surface 2 of the golf club of the present invention is formed, and the broken line of the outer edge portion indicates the engagement of the surface outer casing 2 with the crown outer casing 3, the bottom outer casing 4, and the socket outer casing 5. In part, the thick-walled portion 2& formed on the inner surface of the surface outer casing 2 is formed by the dotted surface, and the surface outer casing 2 is formed by the dotted line. Since the portion where the thick-walled portion 2a is formed is large in mass, 104877.doc 1304353 Fig. 3 schematically shows an instantaneous state in which the golf club 1 of the golf club of the above-described third embodiment is used to hit the golf ball, and Fig. 3(A) shows the hitting point SP on the toe side of the club head. In the case where the golf ball is hit, the ball striking force F is increased. In this state, since the thickness of the thick portion 2& of the surface outer casing 2 is insufficient in the lateral direction, the force couple cannot be generated, and therefore, the size is locally present. Poor, but it can prevent the entire surface of the surface shell 2 from being bent and deformed in the direction of the center of the sphere, and can prevent the elastic force from being greatly weakened. As shown in Fig. 3(B), 'the hitting point 卯 is located at the heel side of the head. The same is true when the situation is The influence of the force couple 'prevents the substantial reduction of the rebound force. In order to verify the result, the applicant of the present invention tried to perform a hard number of experiments with different conditions' and the results are shown in the numerical tables of FIGS. 4 to 7. Figure 4 is the result of the rebound coefficient. The test head A, the comparison head A, and the counter-rotation used in this experiment are the titanium metal heads made by Qianqi Forging. The test head A, the surface shell 2 The thickness of the thick portion is ι〇_, and the other portion is 2 '' loft angle is set to 15. Below. Further, the thick portion can be formed on the surface outer casing by various methods, and the present invention The thickness of the thick portion in the middle refers to the thickness of the thick portion including the thickness of the surface outer casing even when a thick portion is formed using a material different from the surface. The dry soil β contrast; the head A system does not form. The thick wall portion and the entire surface is a common structure of the uniformity of Μ _. The comparative head B is formed with a circular thick portion having a diameter of 40 7 at the center portion of the surface, and the other portion has a thickness of 2 mm. Try to be a talented person A, a comparison head B' Like housing, the thickness of the bottom end of the housing 104877.doc 1304353 are both 1 mm, for insertion into the socket housing based round bar who joined by welding the various parts of the housing, and then grinding, painting, to complete the production.

The method of inspection is to hit the golf ball with the center of each club head of the golf club and the toe side of the club head 20 mm from the center and the heel side of the club head, and then rebound according to the golf ball. The speed of time, the calculation to find the rebound coefficient. The experimental results are shown in Fig. 4. It can be determined that the maximum difference between the rebound coefficient of the center and the rebound coefficient at a position of 20 mm, that is, the maximum coma, is the minimum of the test head A of the present invention, and the center portion is The difference between the rebound coefficient of the toe side of the club head and the heel side of the club head is small. Then, using the test head A, the comparison head A, and the comparison rod to test the golf ball, an experiment for measuring the flying distance was performed. It is equipped with a long handle and a grip on each club head to make a Gore A club, and then swings at a head speed of 4G meters according to the automatic flight distance measuring device, and the golf ball turns five times at this time. The average value is shown in Fig. 5. According to the figure = no result, it can be clearly determined that the maximum distance of the flight distance when the flight distance of the disk is measured by the distance from the center 20 is the minimum 'center and the rod of the test rod of the present invention. The difference in flight distance between the toe side and the heel side of the club head is lower than that of the head. Fig. 6 shows an experimental result for judging how the result will occur when the thickness of the thick portion of the surface outer casing 2 is different. The thickness of the thick wall portion of the head A to the head D is set to 1Qmm to 4 mmq. The comparison head A uses the same head as the comparative head A in the above-described κ test. The graph = the number of real, the experimental results of the method, according to the map to determine the 'concealed thick wall thickness reduction, the rebound system 104877.doc 1304353 number of the worst difference Jiang Yi left, think of - point The point became larger, but when compared with the common structure, the difference between the shame and the capsule, no significant difference was found. Therefore, an experiment was conducted to measure the flight distance using the test head Α 试 test head d and the comparison head Α to test the golf ball. Compared with the above experiment, the automatic flight distance measuring device swings the cup at a head speed of 4 mils per second, and then the distance of the golf ball at the time of the golf ball, and the average value of i is shown in the figure. According to the results shown in the figure, it can be clearly judged that::==fly: the distance from the flight distance when trying to use the position of the center 2 〇 coffee is worse than the 14m of the head A, compared to the test head A ~ 7 to 9 m in the test head D, a large difference is produced. As shown in the above results, in the present invention, the amount of the buckling of each portion of the ball striking surface can be adjusted by the form and material of the thick portion 2a formed in the longitudinal direction of the inner surface of the outer surface casing 2, Different embodiments. In other words, as shown in the figure, the thick portion 2a formed on the inner surface of the surface case 2 is divided into two in the longitudinal direction, and the first κ red example is formed. In comparison, the rigidity of the central portion is reduced and becomes more flexible. The third embodiment shown in Fig. 9 has a thick portion. The crown case 3 and the bottom end peripheral 4 are formed. Contrary to the above-described second embodiment, the rigidity of the center portion is increased and it becomes difficult to bend. The fourth embodiment shown in Fig. 1 is a modification of the third embodiment. The thick portion 2 & which is formed in the center portion is elongated, and the rigidity of the central portion can be reduced as compared with the third embodiment. The fifth embodiment shown in Fig. 5 is a further modification of the third embodiment in which the continuous cutting of the thick portion 2a is performed to reduce the rigidity of the central portion. Next, referring to Fig. 12, a region in which the thick portion of the present invention is provided will be described with a configuration of 104877.doc -12 - 1304353. In the figure, C1 represents the center line of the surface outer casing 2, and C2 represents the center line of the longitudinal direction of the surface outer casing 2. Also, the lateral length of the L-surface outer casing. In the present invention, it is preferable that the center line C1 of the surface outer casing 2 is formed as an axis of symmetry and is located within a range of 50% from the center line C1 to the lateral length L of the surface outer casing 2. — The wall portion 2a that is now fixed. That is, when the range in which the thick portion 2a is provided is Lb, the equation lb$〇.5xl is satisfied. Further, in Fig. 12, the thick portion of the first embodiment is shown as a thick portion, but it may be used as the thick portion of the second to fifth embodiments. Further, there is a thick wall portion which is defined by a center line and which is formed within a range of 50% of the lateral length of the surface outer casing 2, and has a thick wall portion extending in a crown direction along the bottom end as shown in FIG. It can also have a centerline. Tilted thick wall. Next, the thickness regulations of the present invention will be specifically described. For example, the mid-month s surface shell 2 consists of a thick wall portion 2a and two side walls from the lateral direction: the toe side thin wall portion of the club head and the heel side thin wall 02t < The thickness of each part satisfies the following formula.

〇.2tB^tA^〇.8tB • · · Γ1)

°-2tB^tc^〇.8tB • · · (2) Here, tB is a thick wall. The thickness of the U-series head and the side of the town is increased by the size of the outside. Thickness of the soil / soil, the thickness of the thin part of the toe side of the k-seed head, and the thin wall of the thin section is 9 〇. ^ 11 ^ 2 & Relative to the heel side of the club head and the toe side of the club head or the angle of the person, but the surface (top) flat 104877.doc 1304353 is better connected. Then, the thickness of the H Μ 疋 疋 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 As described above, according to the present invention, the degree of freedom in forming the thick portion is high, and according to the form of the thick portion 2a, it is possible to easily attack the center portion and the toe side. The rigidity of the heel side of the club head. On the other hand, since the thick portion 2a is formed in the longitudinal direction of the substantially central portion of the inner surface of the surface outer casing, even if the deviation from the center portion, the toe side of the club head or the heel side of the club head becomes the hitting point,

The shape 'bounce rate and flight distance will not produce a large difference, so that a more stable hitting performance can be obtained. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an exploded perspective view showing the configuration of a first embodiment of the present invention. Fig. 2 is a view showing the state of formation of the surface outer casing according to the first embodiment of the present invention. Figs. 3A and 3B are views for explaining the ball striking performance of the third embodiment of the present invention. Fig. 4 is a table showing the numerical results of experimental results comparing the measured values of the rebound coefficient.

Fig. 5 is a table showing numerical values of experimental results comparing flight distance measurement values. Fig. 6 is a numerical table showing the experimental results of the measured values of the rebound coefficient which are different from the thick portion. Fig. 7 is a numerical table comparing experimental results of measured values of flight distances due to differences in thick portions. Fig. 8 is a view showing a state in which a surface outer casing according to a second embodiment of the present invention is formed. Fig. 9 is a view showing a state of formation of a surface outer casing according to a third embodiment of the present invention. FIG. 10 is a diagram showing a state of formation of a surface outer casing according to a third embodiment of the present invention. Fig. 10 shows a state in which the surface outer casing of the fifth embodiment of the present invention is formed. Fig. 12 is a view for explaining a region in which the thick portion of the present invention is formed. Fig. 13 is a view showing a state of formation of a surface outer casing according to still another embodiment of the present invention. Fig. 14 is an exploded perspective view showing a configuration of a head of a prior golf club. Fig. 15 is a view showing a state of a golf ball in the prior art. Formation of the surface shell of the cup head Fig. 16A, B are diagrams for explaining the prior art. _ The ball hitting of the club head [Description of the main components] 1 Golf club 2 Surface shell 2a Thick wall 3 Crown shell 4 Bottom shell 5 Socket shell 104877.doc

Claims (1)

I3〇@&3l43860 Patent Application Chinese Application σ月 patent toward < 围换本(August 1997) "一~TM ―,...·,, -一' X. Patent application scope: ^ j丨丨Less t ' » - ·· —— -·· — >··· .. - !· A golf club head that is formed by a metal casing structure to form a body blank, characterized by: a surface outer casing that becomes a ball striking surface, the outer casing having a thick portion formed in a longitudinal direction and substantially at a center in a lateral direction of the inner surface thereof, the thick portion being symmetric with respect to a center line of the lateral direction of the surface outer casing, and formed on the surface Within the range of 5〇% of the lateral length of the surface outer casing. 2. The beautiful golf club of claim 1, the cane, the upper surface of the spoon, and the thickened portion of the surface of the spoon.曰 w w 成 成 成 成 柃 柃 柃 柃 柃 柃 柃 柃 柃 柃 柃 柃 柃 柃 柃 柃 柃 柃 柃 柃 柃 柃 t t t t t t t t t t t t t t t t t t t t t t t t t t t t t tB is the largest of the above thick wall, the thickness of the wall, tc is thinner on the heel side: two heads 104877-970811.doc