KR19990032993U - Golf pole with titanium head and plastic hosel - Google Patents

Abstract

Golf clubs, often 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 the bore in the head and an upper portion extending upward from the 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, which receives the tip end of the shaft, which is preferably made of graphite. Since the hosel is made of a soft material rather than the head, the hosel has a shock absorbing effect 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 the lower portion of the outer portion of the hosel so that the hosel can be inserted into the bore with a single deflection to ensure the correct alignment of the shaft with respect to the head. Complementary and irregular.

Description

Golf pole with titanium head and plastic hosel

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

Recent improvements to golf club design include fundamentally improvements to the "driver" used to hit golf balls seated 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 S. US Patent No. 5,538,246 to S. Delira and 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 formed 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 extends the life of the shaft by reducing the shock transmitted to the shaft, thereby preventing the shaft from breaking, and the outer shape of the lower portion of the hosel and the head of the head so that the hosel can be inserted into the bore with only one deflection. The bore inner shape provides a complementarily 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,

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

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

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.

Description of the main parts of the drawing

10; Golf club

12; head

14; Hosel

16; shaft

17; Tip end

18; main body

20; Upper wall

22; Bottom wall

24; Sidewall

26; Facade wall panels

28; complement

30; side

33; End face

34; Top

36; bottom

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, side walls connecting these upper and lower walls, and a front wall surface arranged to impact the golf ball. The head includes a heel end and a toe end. The head is provided with a bore disposed 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 at 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 comprises 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 having a tip end 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 deflection. Do.

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, side walls 24 connecting the upper wall 20 and the lower wall 22, and a front wall surface arranged to impact a golf ball ( 26). The head 12 also has a heel end 12a and a toe end 12b.

The bore 28 is provided at the heel end 12a of the head 12 extending downward from the body top wall 20 toward the 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 end 17 housed within the hosel passage 40. The shaft tip end 17 extends over the full length of the hosel 14 and contacts the bottom 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. Thus, a weak impact is transmitted to the shaft 16 to prevent breakage of the shaft 16 and to reduce the cost since the tip end 17 of the shaft 16 may be weak.

4-8, the lower portion 36 of the hosel 14 is irregular in its outer shape formed of a generally arcuate surface 14a covering the front and sides and a generally flat surface 14b covering the back. . The bore 28 in the head 12 has an inner shape that is divided into a generally arcuate surface 28a and a generally flat surface 28b that is complementarily irregular with the angular 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 mated to 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, the outer shape of the lower portion of the hosel and the inner shape of the bore of the head are complementarily irregular so that 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 low 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. a toe end, wherein the head is provided with a bore disposed at the heel end behind a body front wall extending downward from the top wall of the body toward the bottom wall of the body, the bore being an open top; A closed bottom, the top of the bore being substantially flush with the top wall of the body, the bottom of the bore being spaced 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 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 end 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. The outer shape of the lower portion of the hosel is irregular, and 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 in one deflection. 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 an upper wall, a lower wall, sidewalls connecting these upper and lower walls, and a front wall disposed to impact a golf ball, wherein the head includes a heel end and a toe end. The head further includes a bore disposed in the heel end behind the body front wall extending downward from the top wall of the body toward the body bottom wall, the bore comprising an open top and a closed bottom. The upper end of the bore is substantially the same height as the upper wall of the body, the lower end of the bore is a certain distance 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 head, wherein the upper and lower portions of the hosel are separated by a dividing line, and the dividing line is divided into an upper wall and a bore of the main body. Is substantially the same height as both the top of the hosel, and 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 end received in the hosel passageway. 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 in one direction. Golf clubs. 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 and the generally flat surfaces of the hosel and the bore are aligned with each other.