Abstract:
A golf club comprises a club head and a club shaft, in which, the head includes a main body with a top hole arranged in a top portion thereof and a bottom hole corresponding to the top hole in a bottom portion of the same, and also includes a joint, one end of which is an insertion end inserted into and located by a Location structure within the top hole, and connected with a fastener arranged at the bottom of the main body, the other end of which is fixedly secured to the shaft. The fixedly secured joint portion passes through a passage communicating with the top hole and the bottom hole. The above arrangement is convenient for the detachment of the golf shaft and the random combination of the head and the shaft.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    The present invention relates to a sports instrument, more particularly, relates to a golf club, club head and body of the club head. 
         [0003]    2. Description of the Related Art 
         [0004]    A golf club comprises a club head and a shaft. Normally, it is manufactured as a whole piece that cannot be taken apart. While players hitting the golf ball, different specifications of shafts and spine positions caused by procedure limitation and production inconsistency have significantly different effects. Therefore, manufacturers and stores have to provide customers with golf clubs&#39; combination of different specifications of shafts and club heads. Traditional club head and shaft are connected by adhesive, which results in a time delay before using the club. Moreover, if the shaft or club head do not fit with each other, the shaft has to be removed from the club head, in this regard, the shaft may be damaged. Therefore, the club heads and the shafts of the golf clubs in the prior art cannot be separated easily; this will make the selection of golf clubs complex. Selecting golf clubs not only needs lots of time, but also increases cost while purchasing a suitable golf club. 
       SUMMARY OF THE INVENTION 
       [0005]    The object of the present invention is to provide a golf club, especially for drivers, fairway woods and hybrids, with simple structure and easy disassembling, to solve the problem of the golf club in the prior art. 
         [0006]    The solution for solving the problem in the prior art is, providing a golf club that comprises a club head and a shaft. The club head comprises a body and an exchangeable hosel. The crown of the body is set with a generally round crown opening, while a sole opening is set on the sole portion of the body correspondingly. One end of the exchangeable hosel is an insertion end, while the other end which shares the same axis with insertion portion of the exchangeable hosel fits and secures a shaft. The exchangeable hosel inserts into the crown opening of the body and fixed by a position holding structure thereof, thus to keep durable connection with the locking member on the sole portion of the body. The connection portion of the locking member connects the crown opening and sole opening of the club head body via a passage. 
         [0007]    Advantageously, the sole opening of the club head is a counter bore, the locking member sinks into the sole opening. 
         [0008]    Advantageously, the sole opening of the club head body and the passage is incorporated to form a through opening. The locking member is set on the outer surface that around the sole opening of the club head body. 
         [0009]    Advantageously, the club head body is hollow. The sole opening is a through opening. The passage is an upper connection opening set on the bottom of the crown opening. The locking member is set around the upper connection opening that on the inner surface of the club head body 
         [0010]    Advantageously, the durable connection between the insertion end of the exchangeable hosel and the locking member is thread connection. 
         [0011]    Advantageously, the locking member is a bolt. The insertion end of the exchangeable hosel is provided with an internal thread to cooperate with the bolt. The connection portion of the durable connection is the thread of the bolt. 
         [0012]    Advantageously, the locking member is a nut. The insertion end of the exchangeable hosel is provided with external threads to cooperate with the nut. The connection portion of the durable connection is the thread portion of the insertion end of the exchangeable hosel. 
         [0013]    Advantageously, the position holding structure comprises inner splines and outer splines between crown opening wall of the club head body and the insertion end of the exchangeable hosel, which joggle with each other, and a flange which is set on the insertion end of the exchangeable hosel and stays on the crown portion of the club head body. 
         [0014]    Advantageously, the inner splines and outer splines are tapering splines that joggle with each other. 
         [0015]    Advantageously, a tapering portion that cooperates with each other is set between the crown opening of the club head and the insertion end of the exchangeable hosel. 
         [0016]    Still another solution for solving the problem in the prior art is, to provide a golf club that comprises a club head and a club shaft. The club head comprises a body and an exchangeable hosel. The body is provided with a generally round crown opening, while a sole opening is set on the sole portion that corresponds to the crown opening. The club shaft is fitted and secured into the centre hole that set in the centre of the exchangeable hosel, and cooperates with the exchangeable hosel to form an insertion end. The insertion end inserts and stays in the crown opening of the body by the position holding structure on the exchangeable hosel. The insertion end is fixed on the club head body by the durable connection between the club shaft and a locking member on the sole portion of the body. The connection portion of the locking member connects the crown opening and sole opening inside the passage of the club head body. 
         [0017]    Another object of the present invention is to provide a universal club head that may be assembled a golf club with various club shafts. 
         [0018]    The solution for solving this problem is, providing a club head for golf club, the club head comprises a body and an exchangeable hosel. The crown of the body is provided with a generally round crown opening. A sole opening sharing the same axis with the crown opening is provided as well. The crown opening and sole opening are connected with each other. The exchangeable hosel inserts into the crown opening of the body and fixed by a position holding structure thereof, to connect firmly with a locking member on the sole portion of the body. The connection portion of the locking member connects the crown opening and sole opening inside the passage of the club head body 
         [0019]    Advantageously, inner splines and outer splines which joggle with each other is set between the position holding structure that comprises a crown opening wall of the club head body and the insertion end of the exchangeable hosel. 
         [0020]    Advantageously, a tapering portion that cooperates with each other is set between the crown opening of the club head and the insertion end of the exchangeable hosel. 
         [0021]    Still another object of the present invention is to provide a body of club head as a part of a golf club. 
         [0022]    The solution for solving another problem in the prior art is to provide a body of a golf club head. A generally round crown opening is provided on the crown of the head body, while a sole opening sharing same axis with the crown opening is provided on the sole. The sole opening is a counter bore. The crown opening and the sole opening are connected each other. 
         [0023]    Advantageously, tapering splines is provided on the wall of the crown opening. 
         [0024]    The benefits of implementing the present invention are: locking member from the sole portion of the club head connects the exchangeable hosel inserted into the crown of the club head opening, so as to fix the shaft that cooperates with the exchangeable hosel on the club head body. Meanwhile, assembling and disassembling of the club head body and the exchangeable hosel may be carried out easily. While selecting clubs, one can select different club heads, club shafts, as well as different spines position of the shafts to make various combinations. In addition, iterations of disassembling and assembling will not damage the golf club. Therefore, the cost of money and time is saved while purchasing golf clubs. Furthermore, the locking member is a bolt or nut, and the durable connection is by threads connection, thus one can use common tools to disassemble and assemble the golf club. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS  
         [0025]      FIG. 1  is the structure view of the first embodiment of the present invention. 
           [0026]      FIG. 2  is the structure view of the second embodiment of the present invention. 
           [0027]      FIG. 3  is the structure view of the third embodiment of the present invention. 
           [0028]      FIG. 4  is the structure view of the forth embodiment of the present invention. 
           [0029]      FIG. 5  is the structure view of the fifth embodiment of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION  
       [0030]    As shown in  FIG. 1 , the golf club in the first embodiment of the present invention comprises a club head  20 , a club shaft  90  and a locking member  30 . The club head  20  comprises a body  10 , an exchangeable hosel  80 . The crown portion of the body  10  is provided with a generally round crown opening  40 . The sole portion of the club head body  10  is provided with a sole opening  50  correspondingly. The sole opening  50  shares the same axis with the crown opening  40 . The sole opening  50  and the crown opening are connected via a passage  60 . The club head body  10  may be designed into different sizes and shapes if required. 
         [0031]    Club shaft  90  may also be designed into different lengths and shapes. One end of the exchangeable hosel  80  is an insertion end  70  that inserts into the crown opening  40  of the club head body. The position holding structure may be set as: the insertion end  70  of the exchangeable hosel is provided with a flange  71  for positioning. The flange  71  preferably contacts the top portion of the crown opening  40  of the body to limit the up and down movements of the insertion end  70  in crown opening  40 . The flange  71  may sink into the crown opening  40 , which contacts the step of the crown opening  40  to limit the up and down movements of the insertion end  70  in crown opening  40 . The insertion end  70  is also provided with a rotation detent  72 . The position in the crown opening  40  which corresponds to the rotation detent  72  is provided with a slot  42  to embed the rotation detent  72 . The rotation detent  72  inserts into the slot  42  to limit the circumferential rotation of the exchangeable hosel  80 . 
         [0032]    The crown opening  40  may be a counter bore. That is, the diameter of the crown opening is bigger than the diameter of the bottom portion of the crown opening, further; the diameter of the crown opening is bigger than the diameter of the passage. The crown opening  40  may also be a through opening, that is, the diameter of the crown opening is smaller than or equal to the diameter of the bottom portion of the crown opening; further, the diameter of the crown opening is smaller than or equal to the diameter of the passage. The sole opening  50  may be a counter bore. That is, the diameter of the sole opening is bigger than the diameter of the bottom portion of the sole opening; further, the diameter of the sole opening is bigger than the diameter of the passage. The locking member  30  is sunk into the sole opening  50 . The locking member  30  is connected durably with the insertion end  70 . The connection of the durable connection connects with the passage  60  via the club head body  10 . Preferably, the durable connection is by threads connection, and preferably, the locking member  30  is a bolt. The external thread  31  of the bolt is the connection portion of the durable connection. The external threads  31  passes through passage  60  and gets into the crown opening  40  to connect durably with the internal threads of the insertion end  70 . The bolt may be an inner hexagonal head or an outer hexagonal head, it may also be fasteners that can be easily disassembled and assembled, such as Philip&#39;s head or slotted head etc. The locking member  30  may also be a nut. As shown in  FIG. 5 , the insertion end  70  passes through the passage  60  and gets into the sole opening  50  to form the connection portion of the durable connection. The nut and the external threads of the insertion end  70  are durably connected to fix the exchangeable hosel  80  on the club head body  10 . When changing or assembling components, only need to disassemble the locking member  30  out of the sole opening  50 . The user can select suitable shafts and find suitable spines position of the shafts by turning the shaft to assemble club heads. It is easy to use, while reduces the cost of purchasing various kinds of golf clubs. 
         [0033]      FIG. 2  is the structure view of the second embodiment of the present invention. As shown in  FIG. 2 , the golf club comprises a club head  20 , a club shaft  90  and a locking member  30 . The club head  20  comprises a body  10 , an exchangeable hosel  80 . The crown portion of the club head body  10  is provided with a generally round crown opening  40 . The sole portion of the club head body  10  is provided with a sole opening  50  that corresponds to the crown opening  40 . A certain space  1  is provided between crown opening  40  and sole opening  50 . The lower portion of the crown opening  40  is provided with an upper connection opening  41 . The bottom portion of the sole opening  50  is provided with a lower connection opening  51 . The passage that connects the crown opening  40  and the sole opening  50  is formed by the upper connection opening  41 , the lower connection opening  51  and the space  1  between the crown opening and the sole opening. The durable connection can be set as mentioned in the first embodiment. That is, the bolt passes through the passage to the crown opening  40  to connect durably with the insertion end  70 . Alternatively, the external thread of the insertion end  70  passes through the passage  60  into the sole opening  50  to connect durably with the nut. As shown in  FIG. 2 , the durable connection may be set as follows: that is, the insertion end  70  passes through the upper connection opening  41  into the space  1  between the crown opening  40  and the sole opening  50 , and the bolt passes through the lower connection opening  51  into the space  1  between the crown opening  40  and the sole opening  50 , then the bolt and the insertion end  70  are connected durably in the space  1 . Preferably, the space is formed by the hollow club head body  10  naturally. 
         [0034]    As shown in the above-mentioned first and second embodiments, when the golfer is a right handed, preferably, the threads durable connection is by left hand threads connection; when the golfer is left handed, the threads is by right hand threads connection preferably. Thus, the impaction when hitting the ball will fasten the threads connection so as to prevent the locking member  30  from losing. A skid proof underlay may also be provided to prevent the durable connection from losing. 
         [0035]    As described in the first and second embodiments, the sole opening  50  is a counter bore preferably. The flange  71  of the insertion end  70  contacts with the topside of the crown opening  50 . The locking member  30  is fixed on the bottom portion of the sole opening  50 . Thus, the locking member  30  sink into the club head body  10 , instead of leaving outside of the club head body  10 , which affect hitting the ball, as well as making the golf club look nice. 
         [0036]      FIG. 3  is the structure view of the third embodiment of the present invention. The golf club shown in  FIG. 3  comprises a club head  20 , a club shaft  90  and a locking member  30 . The club head  20  comprises a body  10  and an exchangeable hosel  80 . As is same in the first and second embodiments, the crown portion of the club head body  10  is provided with a generally round crown opening  40 , while the sole portion of the club head body  10  is provided with a sole opening  50  corresponds to the crown opening  40 . The sole opening  50  shares the same axis with the crown opening  40 . The sole opening  50  and crown opening  40  is connected by a passage. But the position holding structure  40  for holding the position of the exchangeable hosel insertion end  70  in the crown opening is different from those in the first and second embodiments: an insertion end  70  is also provided with a flange  71  for preventing the exchangeable hosel  80  from up and down movement, and the limitation of circumferential rotation is realized by inner splines  43  and outer splines  73  between the wall of crown opening  40  of the club head body and the insertion end  70  of the exchangeable hosel. The inner splines  43  and outer splines  73  are preferably straight splines along the axis direction of the crown opening  40 . The sectional shape of the splines is rectangle preferably. When hitting the ball to cause impaction, the inner and outer splines joggled with each other, so that the position holding structure is with good durability. Therefore, the insertion end  70  of the exchangeable hosel  80  is fixed inside the crown opening  40  of the club head body  10 . Certainly, the inner splines  43  and outer splines  73  can also be bevel splines that joggle with each other, while the sectional shape may also be involute, trapezia etc. The position holding structure between the exchangeable hosel insertion end  70  and the body crown opening in the first and second embodiments may also be set as the inner and outer splines joggling structure in the present embodiment. 
         [0037]    In this embodiment, the sole opening  50  of the club head body  10  and the passage that connects with the crown opening and the sole opening  50  incorporated to form a through opening  2 . That is, the passage expands downwards to the surface of the sole portion of the club head body  10 . A step  3  is provided near the through opening  2  of the sole portion of the club head body  10 . The locking member  30  is provided on the step  3  to connect durably with the exchangeable hosel insertion end  70 . The durable connection may be set as the threads connection or other durable connection as in embodiments 1 and 2. Meanwhile, the connection of the durable connection may be set as in embodiments 1 and 2. 
         [0038]      FIG. 4  is the structure view of the forth embodiment of the present invention. The golf club comprises a club head body  10 , an exchangeable hosel  80  and a locking member  30 . The crown portion of the club head body  10  is provided with a generally round crown opening  40 , while the sole portion of the club head body  10  is provided with a sole opening  50  corresponds to the crown opening  40 . The sole opening  50  shares the same axis with the crown opening  40 . The sole opening  50  is connected with the crown opening  40  via a passage. The club head body  10  is hollow, the crown opening  40  is a counter bore, and the sole opening  50  is a through opening. The size of the sole opening  50  is greater than the size of the locking member  30 , that is, the locking member  30  can pass through the sole opening  50  and enter into the cavity of the club head body  10 . The lower portion of the crown opening  40  is provided with an upper connection opening  41  that connects the crown opening  40  to the cavity of the club head body  10 . The passage is formed by the upper connection opening  41  and the cavity between the crown opening  40  and sole opening  50 . The crown opening can also be a counter bore opening. That is, the diameter of the crown opening is bigger than the diameter of the upper connection opening that set on the lower portion of the crown opening. At this point, the locking member is fixed on the wall of the lower portion of the crown opening in the club head body. The crown opening can be a through opening also, that is, the wall of the crown opening extends into the cavity of the club head body. At this point, the locking member can be fixed on the end of the wall of the crown opening by a washer or directly fixed on the end of the wall of the crown opening. 
         [0039]    One end of the exchangeable hosel  80  is an insertion end  70 . The positioning holding structure between the insertion end and the crown opening  40  of the club head body may be the same configuration as in embodiments 1, 2 and 3. The difference between embodiments 1, 2, 3 and the present invention is, the durable connection structure between the insertion end  70  and the locking member  30  is different: the locking member  30  passes through the sole opening  50  of the club head body, and set on the inner wall of the club head body  10  that near a upper connection opening  41 , to connect durably with the insertion end  70  of the exchangeable hosel  80 . The connection of the durable connection is implemented by the upper connection opening  41  as in embodiments 1, 2, 3. The connection manner of the durable connection may be implemented as in embodiments 1, 2, 3, preferably, it is by threads connection. The locking member  30  may be a nut, and preferably a bolt. 
         [0040]    As shown in  FIG. 4 , in the present embodiment, a tapering portion that cooperates with each other is set between the insertion end  70  of the exchangeable hosel and the crown opening  40  of the club head. While assembling, the exchangeable hosel  80  may insert into the crown opening  40  easily, which makes the assembling quicker. The same tapering portion may also be applied in embodiments 1, 2, 3. 
         [0041]    When the tapering portion cooperates with the positioning holding structure between the insertion end  70  of the exchangeable hosel and the crown opening  40  of the club head body, the fifth embodiment of the present invention is constructed. As shown in  FIG. 5 , at this point, the rotation detent structure of the circumferential rotation between the crown opening  40  of the club head body and the insertion end  70  of the exchangeable hosel is the inner and outer splines structure in the third embodiment. The inner splines  43  and the outer splines  73  are tapering splines  5  that joggle with each other. The tapering splines  5  may limit the circumferential rotation of the insertion end  70  of the exchangeable hosel inside the crown opening  40  of the club head body. It may also direct the exchangeable hosel  80  to insert into the crown opening  40  easily. 
         [0042]    In the first to fifth embodiments of the present invention, one end of the exchangeable hosel  80  is the insertion end  70  of the exchangeable hosel. The other end which shares the same axis with insertion portion of the exchangeable hosel fixes on one end of the club shaft  90  by adhesive connection. As shown in  FIG. 4 , a durable connection structure that connects the insertion end  70  and locking member  30  as in the first to fifth embodiments may be set on the exchangeable hosel  80 , as well as the positioning holding structure between the insertion end  70  of the exchangeable hosel and the crown opening  40  of the club head body. By setting the durable connection structure and positioning holding structure in a single component, that is, exchangeable hosel  80 , the durable connection structure and positioning structure are easy to manufacture, thus the cost is decreased at the same time. Certainly, the exchangeable hosel  80  and club shaft  90  may be manufactured as a whole. 
         [0043]      FIG. 5  is the structure view of the fifth embodiment of the present invention. The exchangeable hosel  80  is provided with a centre opening  81 . One end of the club shaft  90  passes through the centre opening  81 . The configuration of the end of the club shaft  90  is the same as the durable connection structure of the insertion end  70  in the first to fifth embodiments, to connect durably with the locking member  30 . The club shaft  90  cooperates closely with the centre opening  81  of the exchangeable hosel by adhering or welding. The exchangeable hosel  80  and club shaft  90  jointly forms the positioning holding structure of the insertion end  70  as in the first to fifth embodiments. Thus, to make the exchangeable hosel  80  to insert the positioning holding structure and stays in the crown opening  40  of the club head body  10 . In this regard, the positioning holding structure between the insertion end  70  and the crown opening  40  of the club head body is set on the exchangeable hosel  80 . The durable connection structure between the insertion end  70  and the locking member  30  is set on the club shaft  90 . 
         [0044]    In the embodiments of the present invention described above, the locking member  30  may be set as different weights to adjust the total weights of the golf club. 
         [0045]    Various club head and various club shaft with different sprain positions in the embodiments described above may be assembled to form different golf clubs. 
         [0046]    Also, various club head body and various exchangeable hosel in the embodiments described above may be assembled to form different club heads of golf clubs. 
         [0047]    In the present invention, the durable connection manners between the exchangeable hosel  80  and locking member  30  are not limited by the embodiments described above. Any manner that the exchangeable hosel  80  inserts into the generally round crown opening  40  of the club head body  10  with position holding structure by insertion end which shares same axis with exchangeable hosel, and connects durably with the locking member  30  on the sole portion of the club head body  10  in the passage  60  will fall into the scope of the present invention.