KR200345126Y1 - Golf club with titanium head and plastic hosel - Google Patents

Abstract

Golf clubs, commonly referred to as "drivers," include heads made of titanium and hosels made of plastic. The head includes a hollow body, and the hosel is provided with a lower portion inserted into a bore in the head and an upper portion extending upward from an upper wall of the hollow body. The bore has an open top that is substantially flush with the top wall of the body and a closed bottom provided at a distance from the bottom wall of the hollow body. A passage extends over the entire length of the top and bottom of the hosel, the passage containing the tip of the shaft that is preferably made of graphite. Since the hosel is made of a softer material than the head, the hosel has a shock absorbing action to reduce the amount of vibration transmitted to the shaft. In addition, the outer shape of the lower portion of the hosel is irregular, and the inner shape of the head bore is such that the hosel can be inserted into the bore with only a single deflection to ensure the correct alignment of the shaft with respect to the head. Complementarily irregular with the outer shape of the hosel bottom.

Description

Golf pole with titanium head and plastic hosel

The present invention generally relates to golf clubs, and more particularly, to golf clubs, commonly referred to as "drivers."

Recent improvements in golf club design include improvements to the "driver" that is used to hit golf balls that are basically on golf tees. The driver thus improved has a shaft made of synthetic material and a head composed of a hollow shell made of steel, titanium and aluminum. An example of such an improved golf club is US Patent No. 5,452,890 to G. Bingman and US Patent No. 5,538,246 to S. Delira. US Patent No. 5,575,723 to S. Take et al. The Bingman patent discloses a golf club with a cushioning material inserted into the titanium head to prevent the shaft from breaking. The dekura patent also discloses a golf club with a hosel made of synthetic resin for attaching the shaft to a head made of magnesium or aluminum. The above patent discloses a golf club provided with a cushioning member made of synthetic resin for coupling the shaft to the head.

The present invention reduces the shock transmitted to the shaft to prevent the shaft from breaking and extends the life of the shaft, and allows the hosel to be inserted into the bore with only a single deflection of the hosel. The outer shape and the bore inner shape of the head complementarily provide an irregular golf club.

1 is a partial perspective view of a golf club showing a preferred embodiment of the present invention,

1A is a perspective view of the golf club head shown in FIG. 1,

FIG. 2 is a top plan view of the golf club shown in FIG. 1,

3 is a cross-sectional view taken along line 3-3 of FIG. 2,

4 is a front perspective view of the hosel used in the golf club shown in FIGS.

5 is a front perspective view of the hosel shown in FIG.

6 is a side perspective view of the hosel shown in FIG. 4,

7 is a rear perspective view of the hosel shown in FIG.

FIG. 8 is a cross-sectional view taken along the 8-8 line shown in FIG. 5.

Description of the main parts of the drawing

10: golf clubs

12: head

14: hosel

16: shaft

17: tip

18: main body

20: upper wall

22: lower wall

24: sidewall

26: front wall

28 bore

30: side

33: end face

34: upper

36: lower

38: dividing line

The present invention includes a head made of a first material having a high shear modulus.

The head includes a hollow body having an upper wall, a lower wall, sidewalls connecting the upper and lower walls, and a front wall disposed to impact the golf ball. The head includes a heel end and a toe end. The head is provided with a bore located in the heel end behind the main body front wall extending downward from the top wall of the main body toward the lower wall of the main body. The bore includes an open top and a closed bottom. The top of the bore is substantially the same height as the top wall of the body, and the bottom of the bore is spaced from the bottom wall of the body. The golf club further includes a hosel formed of a second material having a low shear modulus. The hosel includes a lower portion inserted into the bore in the head and an upper portion extending upward from the upper wall of the body. The hosel is provided with a substantially longitudinal passageway extending over the entire length of the top and bottom. The golf club also includes a shaft with a tip housed within the hosel passageway.

In a preferred embodiment of the golf club, the first material forming the head is titanium and the second material forming the hosel is plastic. The shaft may be made of a third material, such as graphite, having a low shear modulus. The hosel absorbs most of the shock caused by the head hitting the golf ball in front of it. Less impact is transmitted to the shaft, thus preventing the shaft from breaking.

An important feature of the golf club according to the present invention is that the outer shape of the lower portion of the hosel is irregular, and the inner shape of the bore of the head is irregularly complementary to the outer shape of the lower portion of the hosel so that the hosel can be inserted into the bore with only one clove. .

In FIG. 1, the golf club 10 according to the present invention includes a head 12, a hosel 14, and a shaft 16. The head 12 has a hollow body 18 made of a first material, such as titanium, having a high shear modulus. The main body 18 has an upper wall 20, a lower wall 22, a side wall 24 connecting the upper wall 20 and the lower wall 22, and a front wall surface disposed to impact the golf ball ( 26). The head 12 also has a heel end 12a and a toe end 12b.

Bore 28 is provided at heel end 12a of head 12 extending downward from body top wall 20 toward body bottom wall 22. The bore 28 is provided with an open top 28a and a closed bottom 28b. As shown in FIG. 3, the top 28a of the bore 28 is substantially the same height as the top wall 20 of the body 18, and the bore bottom 28b is the bottom wall 22 of the body 18. ) A certain distance from. The bore 28 is formed by a side 30 connected with the side wall 24 of the head 12 and an end face 32 connected with the side 30.

The hosel 14 is formed of a second material such as plastic having a low shear modulus. The hosel 14 includes an upper portion 34 extending upwardly from the upper wall 20 of the body 18 and a lower portion 36 inserted into the bore 28. The top 34 and bottom 36 of the hosel are separated by a dividing line 38. The hosel 14 also has a substantially longitudinal passageway 40 extending over the entire length of its top 34 and bottom 36. Once the golf club 10 is assembled as shown in FIG. 3, the hosel 14 contacts the bottom 32 of the bore 28.

The shaft 16 is made of a third material, preferably graphite with low shear modulus. The shaft 16 is provided with a tip 17 housed in the hosel passage 40. The shaft tip 17 extends over the full length of the hosel 14 and contacts the lower end 32 of the bore 28. In the preferred embodiment of the golf club 10, the shear modulus of the hosel 14 is closer to the shear modulus of the shaft 16 than the shear modulus of the head 12. This relationship of modulus of elasticity causes the hosel 14 to absorb most of the impact resulting from the head 12 hitting the golf ball against its front face 26. Therefore, the weak impact is transmitted to the shaft 16 to prevent the breakage of the shaft 16, the cost is reduced because the tip portion 17 of the shaft 16 may be weak.

In Figures 4-8, the lower portion 36 of the hosel 14 is formed of a generally arcuate surface 14a covering the front and sides and a generally flat surface 14b covering the rear thereof and having an irregular outer shape. Do. The bore 28 in the head 12 is divided into a generally arcuate surface 28a and a generally flat surface 28b and the inner shape is complementarily irregular with the outer shape of the lower portion of the hosel. Thus, the hosel 14 can be inserted into the bore 28 with only one clove to ensure correct alignment of the shaft 16 with respect to the head 12. In this orientation, the generally arcuate surfaces 14a, 28a of the hosel 14 and the bore 28 are matched with each other, and the generally flat surfaces 14b, 28b of the hosel 14 and the bore 28. ) Matches each other.

Since the hosel 14 is made of a softer material than the head 12, the hosel 14 imparts a shock absorbing effect to the shaft 16. This damping effect greatly reduces the amount of vibration transmitted to the shaft 16 and increases the life of the shaft.

In addition, since the outer shape of the lower part of the hosel and the inner shape of the bore of the head are complementarily irregular, the hosel can be inserted into the bore with only one clove.

Claims (12)

A golf club comprising a head made of a first material having a high shear modulus, a hosel made of a second material having a low shear modulus, and a shaft, The head includes a hollow body having an upper wall, a lower wall, a side wall connecting the upper wall and the lower wall, and a front wall disposed to impact a golf ball, wherein the head includes a heel end and a tow ( toe) an end, said head being provided with a bore positioned at said heel end behind a body front wall extending downward from the top wall of said body towards the bottom wall of said body, said bore being closed with an open top. A lower end of the bore, the upper end of the bore is substantially the same height as the upper wall of the body, and the lower end of the bore is spaced from the lower wall of the body, The hosel includes a lower portion inserted into the bore and an upper portion extending upward from an upper wall of the main body, wherein the hosel is provided with a substantially longitudinal passage extending over the entire length of the upper portion and the lower portion, And the shaft includes a tip portion received within the hosel passageway. 2. A golf club according to claim 1, wherein said first material is titanium. 3. A golf club according to claim 2, wherein said second material is plastic. 4. A golf club according to claim 3, wherein the shaft is made of a third material having a low shear modulus. 5. A golf club according to claim 4, wherein said third material is graphite. 2. The golf club of claim 1, wherein the hosel further comprises a dividing line separating the upper and lower portions. 7. A golf club according to claim 6, wherein the dividing line is substantially the same height as both the body top wall and the top of the bore. According to claim 1, wherein the outer shape of the lower portion of the hosel is irregular, the inner shape of the bore is irregularly complementary to the outer shape of the lower portion of the hosel to insert the lower portion of the hosel into the bore with only one clove. Holding golf. 9. A golf club according to claim 8, wherein the irregular outer shape of the lower portion of the hosel is formed by a generally arcuate surface and a generally flat surface. A golf club comprising a head made of titanium, a hosel made of plastic and a shaft made of graphite, The head includes a hollow body having a top wall, a bottom wall, side walls connecting the top and bottom walls, and a front wall disposed to impact the golf ball, the head further comprising a heel end and a toe end. The head is provided with a bore located in the heel end behind the main body front wall extending downward from the top wall of the body toward the bottom wall of the body, the bore includes an open top and a closed bottom, the top of the bore Is substantially the same height as the top wall of the body, and the bottom of the bore is a certain distance from the bottom wall of the body, The hosel includes a lower portion inserted into the bore and an upper portion extending upward from an upper wall of the head, wherein the upper and lower portions of the hosel are separated by a dividing line, and the dividing line is formed by the upper wall and the bore of the main body. Substantially the same height as both top, the hosel is provided with a substantially longitudinal passageway extending over the entire length of the top and bottom, And the shaft includes a tip portion received in the hosel passage. 11. The method of claim 10, wherein the outer shape of the lower portion of the hosel is irregular, the inner shape of the bore is irregularly complementary to the outer shape of the lower portion of the hosel so that the lower portion of the hosel can be inserted into the bore with only one clove. Holding golf. 12. The irregular outer shape of the lower portion of the hosel is formed with a generally arcuate surface and a generally flat surface, and the complementary irregular inner shape of the bore is also formed by a generally arcuate surface and a generally flat surface. A golf club characterized in that the generally arcuate surfaces of the hosel and the bore are aligned with each other only by the clove, and the generally flat surfaces of the hosel and the bore are aligned with each other.