JP2000197718A - Golf club head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a golf club head of new construction capable of producing and add a secondary hitting force at the moment of impact and capable of realizing the increase of driving distance, the adjustment of hitting force, and the enlargement of sweat spot or the like. SOLUTION: The golf club head is constituted in such a way that the face principal surface of a head body 1 is formed by a metallic repulsive part 11 of a prescribed thickness, and a cushioning member 2 consisting of a natural rubber formed in a prescribed thickness is fitted to the rear side of the metallic repulsive part 11, and then the cushioning member part 2 is inserted between the metallic repulsive part 11 and a weight body part 3 integrally fitted to form the back face part of the head body 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to golf clubs such as woods, irons, wedges and putters, and more particularly to a metal such as an aluminum alloy, titanium or stainless steel, carbon or a wood material such as persimmon. At the moment of the impact of the club head,
It is an object of the present invention to provide a golf club head having a novel structure capable of realizing an increase in a flight distance, an adjustment of a hitting force, an enlargement of a sweet spot, and the like by adding a secondary hitting force.

[0002]

2. Description of the Related Art Golf escapes from the complexities of modern society and everyday crowds, walks on vast courses surrounded by greenery, and enjoys the exhilaration of chasing white balls in nature. As a sport that can be deepened, the lovers' population has been increasing year by year, and it has become an elegant time to enjoy golfing almost every day on many different golf courses spread throughout the country. ing. Golf, which is loved by many people, is the only sport that can fly a small ball with its own power up to a distance of more than 200 meters, which is unprecedented in other sports, and it is a golf player If so, everyone will not stop eagerly to fly more accurately and will continue to seek golf clubs with even higher performance and new functions.

[0003] Many golf enthusiasts want to be able to fulfill their wishes and enjoy playing to their heart's content.
Each golf club manufacturer has been working on product development in various fields so far.For example, in order to facilitate accurate hitting, we have focused on developing golf club heads with a wide sweet spot. Pour, marketed metal headed wood and cavity type irons, and pin type putters etc. are successively commercialized to stabilize putting, and then fly to the most demanding and accurate distance As a golf club head that can do it, it is not only a mere material development so far, but also devised weight balance, especially,
Weights are distributed on the toe, sole, and heel sides of the back face side to disperse the mass on the outer peripheral side of the face, expanding the sweet spot and lowering the center of gravity so that the core of the ball can hit the face at a right angle to the face surface After the head body is formed of a light alloy, a plate-shaped metal repulsion portion made of a hard material is attached to a portion of the main surface of the face that hits the golf ball, and a specific gravity is provided inside each of the toe and the heel portion. High-weight metal parts are inserted, neck cells connecting the shaft and the head body, or hosels are fitted with cylindrical weights to attenuate vibrations that occur at the moment of impact. Various products have been developed and researched in order to meet various demands, such as being provided, and have been put to practical use.

[0004] As described above, golf clubs that have been developed and provided with various thoughts do not always have the same evaluation according to the player's preference, constitution, and skill.
The fact is that many players are still unsatisfied and look forward to the emergence of more ideal golf clubs. In view of the circumstances described above, the present invention has a higher performance, a greater distance, a desire to fly the ball more accurately, and from the desire that one or more golf players can meet the desire. As a result of rapidly developing and researching it, repeating trial and error, many trial productions and many experiments over a long period of time, this time, the impact power is added at the moment when the ball finally impacts, and the flight distance is extended a little The present invention has succeeded in realizing a golf club head having a novel structure which enables the present invention to be realized. Hereinafter, the configuration will be described in detail with an embodiment representative of the present invention shown in the drawings.

[0005]

DETAILED DESCRIPTION OF THE INVENTION As will be clearly understood from the embodiments of the present invention shown in the drawings, the golf club head included in the present invention basically has the following structure. That is, while the main face of the head body is made of a metal repulsion part having a predetermined thickness, the elastic deformation between the metal repulsion part and the golf ball at the moment of impact is provided behind the metal repulsion part. At a slight timing of the accompanying contact state, a weight body portion that enables movement toward the back of the metal repulsion portion substantially independently is provided side by side and integrated, and at the time of impact, the weight body portion is behind the metal repulsion portion. A golf club head having an inertial motion on its side and capable of adding a secondary impact force to a metal repulsion portion.

More specifically, the golf club head according to the present invention having the above-described basic structure has a metal repulsion portion having a predetermined thickness, and the entire back face side portion of the head body forms a main face of the face of the head body. On the other hand, at a slight timing of the contact state caused by the elastic deformation between the metal repulsion portion and the golf ball at the moment of impact, the movement toward the rear surface of the metal repulsion portion can be substantially independently performed. It is formed on the weight portion, and at the time of impact, the entire back face side portion as the weight portion makes an inertial motion on the back side of the metal repulsion portion so that a secondary impact force can be added to the metal repulsion portion. It can be said that the golf club head is configured.

[0007] In addition, if the golf club head has a more specific structure and is suitable for a golf club head having a smaller number, such as a wood or a spoon, a part or all of the back face side of the head main body can be used. Is formed in a hollow space portion, and a separate weight body portion arranged in the space portion is
Attached to the back of the metal repulsion part of the predetermined thickness, which forms the main face of the head body, via a cushioning part and integrated, and at the moment of impact, a separate weight body moves to the back side of the metal repulsion part at the moment of impact And a golf club head having a configuration in which a secondary impact force can be added to the metal repulsion portion.

Further, if the golf club head included in the present invention having the above-described basic structure is shown as a more specific structure, a plurality of or one female screw portion is formed on the face forming surface. The entire back face side of the head body is formed as a weight body portion, and has a predetermined thickness forming the main face of the head body with respect to the face forming surface of the back face side portion, and is formed so as to correspond to the female screw portion. A metal repulsion part having a hole formed thereon is interposed via a buffer material part, and a fixing screw is screwed into the female screw part using the through hole to be integrated,
At the moment of impact, a golf club head configured such that the entire back face side portion as a weight body portion makes an inertial motion on the back side of the metal repulsion portion and a secondary impact force can be added to the metal repulsion portion, A plurality of or one female screw portion is formed on the face forming surface, and the entire back face side portion of the head main body in which a part or the whole is formed in a hollow space portion, and a separate body portion is a weight portion. With respect to the face forming surface of the back face side portion, a metal repulsion portion having a predetermined thickness forming the main face of the head main body and a through hole corresponding to the female screw portion is formed as a cushioning material. Through the part, the fixing screw is screwed into the female screw part using the through hole and integrated, and at the moment of impact, the entire back face side part as the weight body part, and another thing separate from it Has inertia on the back side of the metal repulsion part Without the dynamic, there is a golf club head according to subject matter the configuration formed by as capable adding a secondary impact force to the metal reactive portion.

Similarly, a plurality of female threads are formed on the back face surface on the side of the back face of the head body at appropriate intervals, and a through hole is formed separately from the head body and penetrates in the thickness direction. A prepared weight portion is prepared, and a female screw portion of a selected portion of the female screw portion is aligned with a through hole of a weight portion separate from the head main body, and the upper portion of the weight portion is inserted through a buffer material portion. By inserting a fixing screw through the through hole and screwing into the female screw portion, the weight portion is integrated, and at the moment of impact, the weight portion separate from the head main body is on the rear side of the metal repulsion portion. A golf club head having a configuration in which inertial motion is made so that a secondary impact force can be added to the metal repulsion portion, and a metal repulsion portion having a predetermined thickness forming a face main surface of the head body. Between the and the back face side,
Alternatively, at an appropriate position on the back face side, a cut portion having a predetermined depth is formed to open over a range extending from the toe side to the heel side of the sole portion. Due to the elastic deformation of the continuous part remaining above the cut, the moment of impact, the weight body makes an inertial movement on the back side of the metal repulsion part, and substantially adds a secondary impact force to the metal repulsion part Also included is a golf club head having a gist capable of being configured.

In the golf club head according to the present invention having the above-mentioned basic structure, a separation space is appropriately provided with respect to the back face surface of the head body back face side, and the back face is located above the back face. A separate weight body part is arranged in a structure that is integrated into the surface and becomes a connection part,
At the moment of impact, the separate weight body makes an inertial movement toward the back face side of the head main body at the moment of impact due to the elastic deformation of the connecting part formed above the separation section, and the face main face of the head main body substantially The main feature is that a secondary impact force can be added to a metal repulsion part having a predetermined thickness, and a metal part having a predetermined thickness that forms a main face of a face of a head body facing in a cut part. Either one or both of the rebound part wall surface or the back face side wall surface, or
One or more collisions for restricting the proximity distance between the back face surface of the head body back face side portion and the separate weight body wall surface facing each other in the separation distance portion within a predetermined range. The present invention also includes a gist having a configuration in which a protruding portion is provided.

[0011] The head body is provided at the lower end of the shaft,
It is a part that plays the function of hitting a golf ball and is made of aluminum alloy, titanium, carbon, wood such as stainless steel or persimmon, stainless alloy casting or soft iron forging, and the club head from wood driver to creek is Of course, the long irons 1-4,
It covers all iron club heads, such as 5 and 6 middle irons and short irons thereafter, as well as all club heads such as wedges and putters. It is a part that can be a face and becomes a hitting surface of a golf ball, and if necessary, a score line is carved on the surface as before, and a hard insert made of titanium or aluminum alloy is provided And so on.

The head main body is, for example, in a range including a portion corresponding to a sweet spot on the main face of the face.
A plurality of female screw portions are formed for the concave notch portion, and a plurality of female screw portions are formed on the female screw hole. The corresponding resilient portion made of light metal, which has a perforated hole, is fixed with a fixing screw, and at the moment when the golf ball is impacted, first, the inertial force of the metal repulsive portion gives the ball a striking force,
Subsequently, after the compression deformation of the cushioning portion, the inertial force of the head main body including the face main surface can be made to work so as to push out the golf ball. Female threads are drilled in a plurality of locations on the back face portion, and the holes are similarly passed through the positions corresponding to the female threads so as to sandwich the buffer material with the through holes at the locations corresponding to the female threads. Attach the weight part made by drilling a hole,
It is also possible to adopt a configuration in which fixing screws are screwed to the respective female screw portions, and are fixed integrally.

Further, as shown in an embodiment which will be described later, the head main body can form a wood back face by a weight body portion which sandwiches a cushioning material portion. It is also possible to make the sweet spot wide by forming a hollow shape, and it is also possible to fix the weight body part sandwiching the buffer material part to the inner wall of the face inside the hollow wood Needless to say, it is also possible to adopt a structure in which it is detachably mounted so that the mounting position of the weight body portion can be appropriately set. Further, it is also possible to adopt a cavity type in which the center of the back face of the iron is hollowed out and the sole side is thickened, and a cushioning material portion is sandwiched between the sole rear side as in an embodiment described later. In addition to the one configured to attach the weight part, the elastic part is formed continuously on the back face upper part, the separation part is formed in the rear part of the sole, and the weight part arranged behind the sole is provided. It is also possible.

The hollow space of the head main body has a function of accommodating the cushioning member and the weight, and the weight accommodated in the space is used when the golf ball impacts. Should be configured to be slightly movable in the striking direction by the inertial force, so that the weight body portion can freely move without being unnecessarily fixed, engaged or locked on the inner wall surface of the space. For example, it is desirable that the weight portion mounting position in the space be appropriately changeable, and that the space dimension be set to such an extent that the weight portion can be mounted at any of a plurality of locations. The head body may be formed small on the lower side, and the upper part of the head body may be formed large to secure the weight balance of the head body on the lower side.

The metal repulsion portion provided on the head body face portion is a portion corresponding to a sweet spot,
It plays a function of transmitting the impact force directly to the golf ball, and is located near the center of the face portion of the wood, iron, wedge and putter, and the face portion of the metal head body itself, or the metal forming the head body or A face part forming part which is made of a relatively hard and lightweight block material or plate material different from non-metal and is attached to and fixed to the front face of the face. It is also possible to attach so as to sandwich the part, in that case, for example,
While processing the central part including the sweet spot of the head main body face part and its peripheral part into a concave shape,
Female threads are pierced at a plurality of locations around the sweet spot of the recessed portion, and through holes are pierced at positions corresponding to the female threads, and the cushioning member and the metal repulsion are fixed with fixing screws, At the time of impact, the cushioning portion may be compressed and deformed, and the metal repulsion portion may slightly retreat and move.

The weight body portion has a function of adding a striking force due to inertia to a metal repulsion portion provided on the main face of the face of the head body at the time of impact of the golf ball. The shape, dimensions, and weight are carefully set so that the shape and weight balance originally required for the golf club are maintained, and the strength is sufficient to withstand the inertia force of the golf club swing and the impact force at the time of impact. Metals such as steel, soft iron or non-ferrous metals similar to those of the head body or metal repulsion, or non-metals such as wood, synthetic resin materials, or composite materials of a relatively large specific gravity The head is mounted on the head body side, as in the embodiments described later, various adhesives, screws, bolts, rivets,
If it can be elastically deformed, it can be attached by welding, brazing, etc., and it is possible to change the setting of the attachment position to the head main body, or the user of the golf club according to their own preference The mounting position may be configured to be freely changeable as appropriate.

The cut portion formed in the sole portion of the head body separates from the face side with a predetermined gap so that the entire back face portion or the rear portion of the back face becomes a weight body portion, and functions to secure the separation distance. In other words, the back face portion is formed into a groove having a predetermined depth so as to leave a continuous portion that can be elastically deformed on the upper portion of the head body so that the back face portion becomes a weight body portion, and the cut depth and / or width are formed. By appropriately changing the dimensions, it is possible to change the timing of generation of the secondary impact force generated at the moment of impact, and it is also possible to provide a collision projection within the notch, and the collision projection can be provided. Is formed on either the face side or the back face side, or both, columnar, conical,
Alternatively, in addition to forming the protrusions, they may be arranged so that the protruding ends face each other, or may be formed so as to be meshed.

The continuous portion formed at the upper portion of the cut portion has a function of integrating the back face side portion or the back face rear portion with the upper face side so as to exhibit elasticity. , It is desirable to adopt a material and shape that are not likely to be fatigued and fractured even when subjected to repeated bending deformation, avoiding shapes with notches and grooves,
It should have a contour that is continuous with a smooth curve or straight line, and in the event of an impact, the entire back face, including the back face side forming the weight body, or the back face of the back face, will be curved and deformed. Is desirably formed so as to disperse, at least, it is good to set the shape so as to have a substantially uniform cross-sectional shape so as to avoid concentration of stress at the time of deformation at one cross-section, Alternatively, a cushioning portion such as a natural rubber or a soft synthetic resin may be attached to a part thereof to reduce the impact.

The weight portion separate from the head body mounted on the upper portion of the back face portion of the head body via the connecting portion, and the separation portion formed between the back face portion are the weight portion. Is separated from the back face with a predetermined gap, and functions to form the separation distance,
By changing the width of the separation part as well as the notch part, it is possible to change the timing of generation of the secondary impact force. In addition, it can be used for collision with one or both of the weight body part and the back face part. Protrusions can be formed, and a cushioning portion such as natural rubber or soft synthetic resin can be mounted in the separation space to reduce the impact.

On the upper part of the back face of the head main body, a connecting part for integrally connecting a weight body separate from the head main body is provided.
The weight part is connected to the upper part of the back face part, and at the moment of impact, it functions to elastically deform,
It should be configured to be firmly connected to the head body and / or the weight body by an adhesive, screw, bolt, welding, rivet, press-fitting or caulking, etc. so that it does not come off during the impact at the time of swing and impact. Yes, for example, assuming that it is installed using screws, if necessary, replace it with another connecting part with a different wall thickness or a different elastic modulus, and finely adjust the timing of the secondary impact force ,
In addition to being able to be configured so that it can be changed, instead of the connecting part, the weight part, with a different weight, or a different weight balance, or another weight body part with a different texture such as color, shape, material etc. It is also possible to configure so as to enable the exchange.

The cushioning material portion mounted in the cut portion or the separation portion serves to reduce the impact force generated at the moment of impact and to efficiently transmit the impact force to the face portion hitting the golf ball. Therefore, it is also possible to install it as a device that exerts the function of damping unnecessary vibration, and it should be mounted in a state of being dotted in the cut portion or separation space, or filling the cut or separation space. For example, for example, it is also possible to form one or both of the notch portion and the opposing wall surface of the separation space portion as a projection shape similar to the collision projection portion.

Further, the golf club head of the present invention, in which a cut portion or a separation portion is formed from the toe side to the heel side of the sole portion of the head body, has natural rubber, A structure in which a buffer material made of a soft material such as a synthetic resin material is mounted and integrated can be used. In the following, the structure of the present invention will be described in detail, together with the embodiment shown in the drawings.

[0023]

EXAMPLE 1 In the example shown in the front view of the golf club head in FIG. 1, a back face portion of a wood club head body 1 was cut out in a plane, and a cushioning material portion 2 and a weight body portion 3 were mounted. 1 shows a typical embodiment of a golf club head included in the present invention having a basic configuration.

The golf club head has a head body 1
Is formed as a metal head made of stainless steel, titanium or aluminum alloy or the like, and the main face of the face is formed of a metal repulsion portion 11 of a predetermined thickness made of a hard material that brings out the elasticity of the ball, The back face portion of the metal repulsion portion 11 corresponding to the back side is cut off so as to be planar, and the cushioning portion 2 made of natural rubber and formed to a predetermined thickness is formed using an adhesive. The weight portion 3 which is fixed and forms the back face portion
Is adhered using an adhesive so that the cushioning member 2 is sandwiched between the back surface of the metal repulsion portion 11 and integrated.

[0025]

Embodiment 2 FIG. 2 shows a front view in which a part of the golf club head is sectioned, showing another embodiment included in the golf club head of the present invention. Is formed in a hollow shape, and the weight body portion 3 is attached to the back surface of the main face of the face in the hollow space portion 12 with the buffer material portion 2 sandwiched therebetween. A metal head formed in a hollow shape, and covers substantially the entire inner back surface of the metal repulsion portion 11 forming the main face of the face, and a cushioning material portion 2 made of a soft synthetic resin plate having a predetermined thickness.
And the cushioning part 2 is attached to the metal repulsion part 1.
1 so that the metal repulsion portion 11 is sandwiched between
A weight body 3 formed in a shape and a size corresponding to substantially the entire surface of the inner back surface is adhered, and the weight body 3 is mounted so as to be swingable inside the metal repulsion part 11. ing.

[0026]

Embodiment 3 The front view of the golf club head in the disassembled state in FIG. 3 is configured such that the entire portion corresponding to the back side of the main face of the face of the head main body 1 is the weight 3. A female screw part which is located at the four corners and is substantially perpendicular to the main face of the face is provided in the mounting recess 17 of the metal repulsion part 11 formed in the main face of the head body 1. , And are set to have a shape and a predetermined thickness corresponding to the mounting recesses 17, and through holes are respectively formed in portions corresponding to the female screw portions 15, 15,. A plate-shaped cushioning member 2 made of perforated natural rubber is mounted, and the cushioning member 2 is formed of lightweight and relatively hard titanium or aluminum alloy or the like so as to be sandwiched between the cushioning member 2 and the mounting recess 17. And fitted into the mounting recess 17 Next, each female threaded portion 15, 15,
At positions corresponding to..., Metal repulsion portions 11 formed by drilling through holes are mounted, and fixing screws 4, 4,... Are inserted through the respective through holes of the metal repulsion portions 11, respectively. Are screwed onto the female screw portions 15, 15,..., And the metal repulsion portion 11 and the cushioning material portion 2 are mounted in the mounting concave portion 17.

[0027]

Embodiment 4 FIG. 4 is a perspective view of a golf club head provided on the back face side of a golf club head with a weight portion removed, showing a golf club head included in the present invention. This is an iron club head having a recessed portion formed at the center of the face portion 13 and configured to be of a cavity type, to which the cushioning portion 2 and the weight portion 3 are attached.

The back face portion 13 of the head body 1
The central portion is formed so as to be slightly concave toward the face surface side, and the peripheral portion of the concave notch is formed into an annular mounting seat surface formed by a ridge having a substantially flat end. 14
In the square of the mounting seat surface 14, female threads 15, 15,... Are bored toward the face side, respectively, while the mounting seat surface 14 extends over the heel, sole and toe. , A buffer member 2 made of natural rubber having a predetermined thickness formed in a substantially U-shaped plate shape and having a through hole (not shown) formed in a portion corresponding to each of the female screw portions 15, 15,. And, similar to the cushioning member 2, the protruding wall thickness in a substantially U-shaped shape corresponding to the range extending over the heel, the sole, and the toe, corresponding to the range of the sole, corresponds to the heel and the toe. The female screw portions 15, 15,...
Are provided in the portions corresponding to..., And the weight 3 is attached to the back face 13 so as to sandwich the cushioning material 2. Seat 1
, And fixing screws 4, 4,... Are inserted through the through holes 31, 31,.
5, and screwed together to be integrated.

[0029]

Embodiment 5 A perspective view of a golf club head in which a separate weight portion is attached to the lower part of the back face in FIG. 5 is a club head portion of a putter included in the present invention. A plurality of female screw portions 15, 15,... On the lower side of the back face of the L-shaped head body 1
, And the weight body portion 3 is detachably attached to a selected one of the female screw portions 15, 15,... With the cushioning material portion 2 sandwiched therebetween. At the lower side of the back face of the head body 1, a mounting seat surface 14 is formed which projects rearward over the entire length of the sole portion formed in a substantially linear shape and has a protruding end surface formed to be substantially the same plane. And female screw portions 15, 15, 15, 15, 15, 15, 15, 15, 15.
.., While being able to be joined to the mounting seat surface 14, and between the pair of adjacent female screw portions 15, 15, the rectangular cushioning member 2 and A weight portion 3 is provided, and through holes 3 corresponding to a pair of female screw portions 15, 15 are provided on the left and right end sides of the buffer material portion 2 and the weight portion 3, respectively.
1 and 31 are perforated, and can be detachably mounted at appropriate positions using fixing screws 4 and 4.

[0030]

Embodiment 6 An example shown in a perspective view of the golf club head of FIG. 6 as viewed from the toe side is a club head portion of an iron included in the present invention.
In the sole portion 16 extending from the toe side to the heel side, the cut portion 5 having a predetermined depth for separating the metal repulsion portion 11 forming the main face of the face and the weight body portion 3 including the back face portion 13 is formed. It is formed.

The head body 1 is made of a cast stainless product, is a cavity type in which the center of the back face portion 13 is cut out, and has a predetermined width range extending over the upper and lower ends of the center including the sweet spot on the main face of the face. Has a metal repulsion portion 11 made of a titanium plate material with a score line engraved thereon, which is fixed by bonding or caulking. The lower surface of the metal repulsion portion 11 and the lower surface of the back face portion 13 forming the weight body portion 3 are separated from each other by a predetermined distance. Weight body portion 3 formed to have a V-shape
The (back face portion 13) has left and right upper ends left as continuous portions 6 and 6 with the head main body 1, and the continuous portions 6 and 6 can be deformed and restored at the time of impact due to the elasticity of the stainless cast product. Further, the front wall surface of the weight body portion 3 (the back face portion 13) facing the cut portion 5 is slightly inclined toward the rear side of the metal repulsion portion 11 (the main face of the face). In this configuration, a projecting ridge 7 is provided, which is a ridge that projects while ensuring a sufficient gap.

[0032]

[Embodiment 7] An example shown in a perspective view of the golf club head of FIG. 7 viewed from the toe side is an iron club head included in the present invention, and a sole extending from the toe side of the head body 1 to the heel side. The cut portion 5 having a predetermined depth is formed in the portion 16 for separating the metal repulsion portion 11 forming the main face of the face and the weight body portion 3 formed of the back face portion 13. The configuration consists of a collision projection 7
Except for the point that the golf club head is not provided, the golf club head has the same configuration as the golf club head shown in FIG.
Further, the cushioning member 2 made of natural rubber is mounted in the cut 5 and fixed using an adhesive.

[0033]

Eighth Embodiment A case shown in a perspective view of a golf club head provided on the back face side of a golf club head with a weight portion removed therefrom is shown in FIG. 8 as a back face portion of a golf club head included in the present invention. 13 is an iron club head in which a weight portion 3 is mounted via a connecting portion 8 and has a recessed portion formed substantially at the center thereof. The upper part is a mounting seat surface 14 whose protruding end portions are substantially flush with each other. On the left and right sides of the mounting seat surface 14, female threads 15, 15,... The head body 1 is formed in a substantially U-shape corresponding to the range extending over the heel, the sole and the toe, and the protruding thickness in the range corresponding to the sole portion is larger than the protruding thickness of the portion corresponding to the heel and the toe. It will be Sets so as to protrude rearwardly, the right and left upper end is formed with a thickness predetermined wall, the female screw portion 1
, Through holes 81, 81,...
Are formed, and the connecting portions 8, 8 are formed.
Are joined to the mounting seat surface 14, and the through holes 81,
Insert fixing screws 4, 4, ... through 81, ...
.. Are screwed into the female screw portions 15, 15,... So as to be integrated with each other.
The separation wall 82 is formed between the three wall surfaces and the front wall of the weight body 3.

[0034]

The golf club head according to the present invention having the above-described structure has the same structure as the wood club head shown in FIG. A metal rebound 11
The first impact force is transmitted to the golf ball through the ball, and at a very small moment until the golf ball is elastically deformed and separates from the surface of the metal repulsion portion 11, the cushioning portion 2 reduces the inertia force of the weight portion 3 At the stage where it is received and compressed and reaches the limit, the inertial force of the weight body portion 3 is directly transmitted to the back surface of the metal repulsion portion 11 and becomes a secondary impact force, which is reduced to the impact force of the previous primary stage. The ball is further accelerated in the added state. Further, when the golf ball has a large elastic deformation, the golf ball is elastically deformed, and
It is assumed that the time until the ball leaves the surface is extended, and the ball may remain in contact with the surface of the metal repulsion portion 11 while being deformed even after the secondary impact force is generated. In such a case, the metal repulsion may occur. The restoring force of the cushioning member 2 which is generated so as to push the weight portion 3 having lost the inertia force by colliding with the back of the portion 11 rearward is relatively applied to the back side of the metal repulsion portion 11. It will be added as a new impact force, and will also act to further enhance the striking force.

In the club head having the hollow space portion 12 shown in FIG. 2, the mass of the head main body 1, which forms the shell-shaped outer wall portion at the moment of impact of the golf ball, is reduced by the face. The primary impact force is transmitted to the golf ball via the metal repulsion portion 11 on the main surface and generates a primary impact force. It will make the spot wider. At the moment when the golf ball is elastically deformed, the space 1
The weight body part 3 in 2 receives the inertia force by the compression of the buffer material part 2 and reaches the limit, and during the follow swing,
The inertial force of the weight 3 is transmitted to the back surface of the metal repulsion portion 11 as an impact force, and a secondary impact force is applied to the golf ball being hit. And, in some cases,
Further, the restoring force of the buffer member 2 immediately after that may be added as the impact force.

In the wood club head shown in FIG. 3, at the moment of impact of the golf ball, the cushioning member 2 supporting the metal repulsion portion 11 is compressed and deformed, and the resilience of the cushioning member 2 during the follow-up of the swing. However, at the moment when the ball strikes the ball, the entire back face portion 13 becomes a weight portion and transmits the inertia force to the ball to apply a secondary striking force to the ball. Similarly, the restoring force of the cushioning member 2 immediately after that may be in favor of the striking force.

In the iron club head shown in FIG. 4, the cushioning member 2 and the weight 3 provided in a substantially U-shape along the heel, sole and toe sides of the back face 13 are provided with the center of gravity of the head main body 1. At the moment of impact of the golf ball, and at the moment of impact of the golf ball, a primary impact force is applied by a collision with the metal repulsion portion 11, which is the main face of the face. , The inertia force based on the mass of the weight body portion 3 that compresses the following cushioning material portion 2
It is added as a secondary impact force. At this time, the fixing screw 4 attached to the head body 1 in a direction parallel to the impact direction changes the forward / backward moving direction of the weight body portion 3 only in the direction of hitting the ball. Will be regulated.

The club head of the putter of FIG. 5 can move the mounting positions of the cushioning member 2 and the weight body 3 to the head main body 1 according to the user's preference. By correcting the habit of, or attaching two or more sets of the cushioning member 2 and the weight 3 to the heel side end and the toe side end, the sweet spot is expanded,
In addition to being able to make the putting more stable, as many buffer members 2 and weights 3 as possible are arranged in a line in all the female screw portions 15, 15,. If attached, the weight balance will be the same as that of the L-shaped type, and the cushioning member 2 will attenuate the vibration of the club generated during putting.

In the iron club head shown in FIG. 6, at the moment of impact of the golf ball, the metal repulsive portion 11 on the main face of the face generates a primary impact force, and at this time, the continuous portions 6, 6 It is deformed to receive the inertial force of the weight 3, and during the following swing, the collision projection 7 formed on the weight 3 comes into contact with the back surface of the metal repulsion portion 11, and The inertia force of the weight body 3 is transmitted to the repulsion unit 11 to give a secondary impact force to the ball.
The reaction force when the continuation portions 6 and 6 are restored acts on the back surface of the metal repulsion portion 11 in some cases so as to work out the metal repulsion portion 11 in the hitting direction, and may be used as a hitting force. .

In the iron club head shown in FIG. 7, the continuous portions 6 and 6 and the weight 3 provided on the back surface of the metal repulsion portion 11 on the main face of the face have the club portion shown in FIG. A secondary impact force is generated by performing substantially the same operation as that of the head. At this time, the cushioning material portion 2 attached to the cut portion 5 assists the elastic force of the continuous portions 6 and 6. Then, the impact that the weight 3 transmits to the back surface of the metal repulsion 11 is momentarily delayed to generate a secondary impact force, and furthermore, the weight 3 after the secondary impact is generated. Vibration is quickly attenuated, and vibration transmitted to the shaft is reduced.

The iron club head shown in FIG.
At the moment of the impact of the golf ball, the weight 3 attached via the connecting portions 8 fixed to the upper portion of the back face portion 13 elastically deforms the vicinity of the connecting portions 8 by its inertia force. , Moves forward in the separation space portion 82 toward the back face portion 13, and the inertial force of the weight body portion 3
At the moment when the elastic force in the vicinity of the portion 8 is balanced, a secondary impact force is transmitted to the back surface of the metal repulsion portion 11, and a secondary impact force is generated, and the weight portion loses inertia force. The restoring force generated in the vicinity of the connecting portions 8 and 8 may push the metal repulsion portion 11 in a striking direction so as to push the metal repulsion portion 11 in the striking direction. The impact force will be strengthened. Further, the weight 3 that can be removed from the head body 1 can be replaced with another weight 3 having a different weight, weight balance, shape, material, etc., as desired.

[0042]

As described above, according to the golf club head of the present invention, the weight portion is sprinkled on the outer peripheral side of the sweet spot to obtain an optimal weight balance, the sweet spot is set wide, and the head body is connected to the shaft. In addition to the conventional measures to increase the ball's flight distance and correct the trajectory direction, a weight is provided in the neck cell and hosel part to attenuate the vibration at the time of impact. At the moment, after the primary impact force is generated, the secondary impact force is added during the follow-up of the swing, so that the effect of greatly increasing the initial velocity itself applied to the ball can be expected, and the impact can be expected Has been proposed since it quickly attenuates vibration at the time of rotation to prevent head shake and stabilizes the movement of the shaft. Compared to golf club heads, it offers superior features in every respect.

In particular, in the golf club head described in the embodiment, the weight 3 attached to the rear of the head body 1 in FIG. 1 so as to sandwich the cushioning member 2 exerts a secondary impact force at the time of impact. In such a case, in addition to the above-mentioned effects, an effect that does not cause discomfort even from the appearance can be expected, and furthermore, there is obtained an advantage that the production is extremely easy and the stability during use can be enhanced. An example of a golf club head in which a cushioning material portion 2 and a weight portion 3 are accommodated and mounted in a hollow space portion 12 formed in a metal wood head body 1 shown in FIG. The present invention has a unique feature that a club head which can obtain the above-described features of the present invention assuming that its appearance is not different from that of a conventional one can be realized. Is configured to be disposed in very close position and the center, expanding the sweet spot, reduce the blur of the head during the swing, effects have become what you can expect that is stable.

A cushioning portion 2 and a metal repulsion portion 11 are mounted on a mounting seating surface 14 formed on a main face of the head body 1 serving as a weight portion in FIG. In the case, at the moment of impact, the metal repulsion portion 11 gives a primary impact to the ball, the cushioning portion 2 becomes compressed, and the inertial force of the head body 1 adds a secondary impact force to the ball. However, depending on the case, the effect of further accelerating the ball can be expected by the restoring force of the buffer member portion 2 immediately thereafter as in the case of each embodiment. Has the advantage that it can be realized by adopting the conventional club head as it is and by devising only the metal repulsion portion 11 which is the main face of the face, and a plurality of fixing screws 4, 4,... Toe and heel side edge of the mounting recess 17, serves as a guide rail for guiding the movement of the metal reactive portion 11, and is what effect can be obtained that more is more stable swing.

The iron head shown in FIG.
It is of a cavity type in which the buffer member 2 and the weight 3 formed in a substantially U shape are attached with a plurality of fixing screws 4, 4,..., And is particularly advantageous in securing a sweet spot wide. In the putter head shown in FIG. 5, the cushioning portion 2 and the weight portion 3 attached to the back face side have a secondary position at the moment of important follow-through during putting. Because it can apply a target hitting force, the acceleration of the ball with a stable direction is born, and more accurate putting can be expected,
By appropriately changing the mounting position and the number of mountings of the cushioning member portion 2 and the weight body portion 3, the advantage that a putter of a completely different balance interval can be realized is added, and a wide range of players from beginners to advanced players can be realized. This makes it possible to make a putter with a weight balance that suits the taste.

Further, the iron head main body 1 shown in FIG. 6 has the cutout 5 formed in the tail portion, so that it is easy to manufacture and has no trouble. In addition to the practical effect, the cushioning member 2 is mounted in the cut 5 as in the case of the club head of FIG. 7, and foreign matter is prevented from entering the cut 5. In addition, the advantage that it becomes advantageous also in the usual management aspect is added, and as shown in FIG.
In the club head in which the weight 3 is detachably mounted via the weight 8, the weight 3 is replaced with another one having a different weight balance, weight, color and / or shape according to preference. Can be realized, and the feature that an iron having a wider application range can be obtained is obtained.

As described above, the golf club head of the present invention enables the intended purpose to be achieved with its novel structure, and is relatively easy to manufacture and does not have a characteristic structure. In addition to making it possible to provide it at a low price, and with a structure in which the cushioning material part and the weight body part are removable, it is also possible to give flexibility to use according to the degree of progress and course situation The golf enthusiasts who have not been able to obtain the golf enthusiasts who have not been able to obtain them can be made economical and practical as compared with the conventional ones, because the range of application can be expanded accordingly. In addition, it can create a chance to meet a long-awaited excellent golf club, and is therefore highly valued by many people related to golf,
It is expected to be widely used and spread.

[Brief description of the drawings]

The drawings show several representative embodiments that embody the technical concept of the golf club head of the present invention.

FIG. 1 is a front view showing a golf club head provided with a weight portion.

FIG. 2 is a front view of the golf club head showing a cross section of a weight portion of a space portion.

FIG. 3 is a front view showing a golf club head having a weight body as a head body.

FIG. 4 is a perspective view showing a golf club head provided with a weight on the back side.

FIG. 5 is a perspective view showing a golf club head in which a weight body mounting position can be changed.

FIG. 6 is a perspective view showing a golf club head having a cut portion formed in a heel portion.

FIG. 7 is a perspective view showing a golf club head in which a cushioning material is attached to a cut portion.

FIG. 8 is a perspective view showing a golf club head in which a weight portion is attached by a connecting portion.

[Explanation of symbols]

 Reference Signs List 1 Head body 11 Same metal repulsion part (face main surface) 12 Same hollow space part 13 Same back face part 14 Same mounting seat surface 15 Same female screw part 16 Same sole part 17 Same mounting concave part 2 Buffer material part 3 Plummet part 31 Same through hole 4 Fixing screw 5 Notch 6 Continuous part 7 Collision projection 8 Connecting part 81 Same through hole 82 Same separation distance part

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[Procedure amendment]

[Submission date] April 22, 1999 (1999.4.2
2)

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG. 7

FIG. 8

FIG.

FIG. 2

FIG. 3

FIG. 4

FIG. 5

FIG. 6

Claims (10)

[Claims] 1. A main face of a head body is made of a metal repulsion part having a predetermined thickness, and a metal repulsion part is provided behind the metal repulsion part at the moment of impact between the metal repulsion part and the golf ball. At a slight timing of the contact state due to the elastic deformation of the weight, a weight portion that enables movement toward the back of the metal repulsion portion substantially independently is provided side by side and integrated, and the weight portion is made of metal at impact. A golf club head having an inertial motion on the back side of a repulsion part made of metal and capable of adding a secondary impact force to the repulsion part made of metal. 2. The entire back face side portion of the head main body is in contact with a metal repulsion portion having a predetermined thickness, which forms a main face of the face of the head main body, between the metal repulsion portion and the golf ball at the moment of impact. At a slight timing of the contact state due to the elastic deformation, the weight is formed on the weight body part which enables the movement toward the rear surface of the metal repulsion part substantially independently, and at the time of impact, the back face side which is the weight body part A golf club head characterized in that the entire portion makes an inertial motion on the rear side of the metal repulsion portion so that a secondary impact force can be added to the metal repulsion portion. 3. A part of or the entire back face side of the head body is formed in a hollow space, and a separate weight body disposed in the space forms a main face of the face of the head body. Attached to the back of the metal repulsion part with a predetermined thickness via a cushioning part, integrated, at the moment of impact, a separate weight body makes an inertial movement on the back side of the metal repulsion part, and A golf club head characterized in that a secondary impact force can be added. 4. A head body in which a plurality of or one female screw portion is formed on a face forming surface, the entire back face side portion is formed as a weight body portion, and the head body is formed with respect to the face forming surface of the back face side portion. A metal repulsion part having a predetermined thickness forming the main face of the face and having a through hole formed corresponding to the female screw part through the buffer material part. At the moment of impact, the entire back face side, which is the weight body, makes an inertial motion on the back side of the metal repulsion part, and adds a secondary impact force to the metal repulsion part at the moment of impact A golf club head comprising: 5. An entire back face side portion of a head main body in which a plurality or one female screw portion is formed on a face forming surface, and a part or the whole thereof is formed in a hollow space portion, and a separate body from the back face side portion. A metal repulsion having a predetermined thickness that forms the main face of the head body and a through hole corresponding to the female screw portion, with respect to the face forming surface of the back face side portion. The part is interposed via the buffer material part, the fixing screw is screwed into the female screw part using the through hole and integrated, and at the moment of impact, the entire back face side as the weight body part, and it A golf club head characterized in that a separate member makes an inertial motion on the back side of the metal repulsion portion so that a secondary impact force can be added to the metal repulsion portion. 6. A female screw portion is formed at a plurality of locations on the back face side of the head body back face side portion at appropriate intervals, and a through hole penetrating in the thickness direction is formed separately from the head body. Prepare the weight body part, and match the through hole of the weight body part separate from the head main body with the female screw part at the selected place of these female screw parts, and via the buffer material part, By inserting the fixing screw through the through hole and screwing it into the female screw part, the weight body part is integrated, and at the moment of impact, the weight body part separate from the head body is on the back side of the metal repulsion part. A golf club head which has an inertial motion so that a secondary impact force can be added to a metal repulsion portion. 7. A sole portion is applied from a toe side to a heel side between a metal repulsion portion having a predetermined thickness forming a main face of a face of a head body and a back face side portion or at an appropriate position on the back face side portion. At the moment of impact, a notch of a predetermined depth that opens over the range is formed, and the rear side from the notch is made a weight body portion, and the elastic deformation of the continuous portion remaining above the notch portion, A golf club head characterized in that the weight portion has an inertial motion on the rear side of the metal repulsion portion so that a secondary impact force can be substantially added to the metal repulsion portion. 8. A structure in which a separation portion is provided as appropriate with respect to the back face surface on the side of the back face of the head main body, and a connection portion is formed by being integrated with the back face surface on the upper side thereof. The weight portion is arranged, and at the moment of impact, the separate weight portion makes an inertial motion on the side of the head body back face at the moment of impact due to the elastic deformation of the connecting portion formed above the same separation distance portion, substantially A golf club head characterized in that a secondary impact force can be added to a metal repulsion portion having a predetermined thickness which forms a main face of the head body. 9. A head facing in the notch portion, one or both of a metal repulsion portion wall surface and a back face side wall surface having a predetermined thickness, which constitute a face main surface of the head main body, or a head facing in the separation interval portion. On one or both of the back face surface of the main body back face side and the separate weight body wall surface, one or a plurality of collision protrusions are provided so as to protrude and regulate the proximity distance between the two to a predetermined range, The golf club head according to claim 7. 10. The golf club according to claim 7, wherein a buffer member made of a soft material such as a natural rubber or a synthetic resin material is mounted and integrated in the cut portion or the separation portion. head.