Abstract:
A shock absorbing hammer includes a head and a handle connected to the head. At least one recessed portion is located on each cheek of the head and abutted to the handle.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
       [0001]    The present invention relates to hammer, and more particularly, to a shock absorbing hammer having recessed portions formed on the cheeks of the head, achieving damping and effort-saving effects. 
       2. Description of the Related Art 
       [0002]    A conventional hammer, for example, the effort-saving hammer  1  of Taiwan Patent M400924 (see its specification and the annexed  FIG. 2 ) comprises a head  2 , and a handle  6  connected to the head  2 . The head  2  has multiple holes  7  cut therethrough to alter the structure, reducing the transfer of the amount of the generated counterforce to the handle  6  upon each operation of the effort-saving hammer to hit against an object and achieving damping and effort-saving effects. 
         [0003]    However, the fabrication of the aforesaid prior art hammer design is complicated because it needs to make holes  7  through the head  2 . 
       SUMMARY OF THE INVENTION 
       [0004]    The present invention has been accomplished under the circumstances in view. It is the main object of the present invention to provide a shock absorbing hammer, which achieves damping and effort-saving effects and facilitates fabrication. 
         [0005]    To achieve this and other objects of the present invention, a shock absorbing hammer comprises a head, and a handle connected to the head, wherein the head has at least one recessed portion located on the outer surface thereof and abutted to the handle. 
         [0006]    The design of the at least one recessed portion on the head can reduce the transfer of the generated counterforce to the handle upon each operation of the hammer to hit against an object, thereby achieving damping and effort-saving effects. Because it is easy to form the at least one recessed portion on the head, the fabrication of the hammer is relatively simple. 
         [0007]    In one aspect, the head of the shock absorbing hammer has two opposite cheeks, and two recessed portions respectively located on the cheeks and abutted to the handle to enhance the damping effect. 
         [0008]    Other advantages and features of the present invention will be fully understood by reference to the following specification in conjunction with the accompanying drawings, in which like reference signs denote like components of structure. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0009]      FIG. 1  is a schematic side view of a part of a shock absorbing hammer in accordance with a first embodiment of the present invention. 
           [0010]      FIG. 2  is a sectional view taken along line  2 - 2  of  FIG. 1 . 
           [0011]      FIG. 3  is a schematic side view of a part of a shock absorbing hammer in accordance with a second embodiment of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0012]    For better understanding of the features of the present invention, two embodiments are provided hereinafter with reference to the annexed drawings, in which the first embodiment is exemplified as a nail hammer; the second embodiment is exemplified as a ball-peen hammer. 
         [0013]    Referring to  FIGS. 1 and 2 , a shock absorbing hammer  1  in accordance with the first embodiment of the present invention is shown. The shock absorbing hammer  1  comprises a head  10  and a handle  20 . The handle  20  is fixedly connected to a middle part of the head  10 . Further, the head  10  comprises two opposite cheeks  12 , a bell face  14 , and two recessed portions  16  respectively located on the cheeks  12  and abutted to the handle  20 . In this embodiment, the recessed portions  16  have a substantially stepped cross section extended along an edge  18  of the head  10 . 
         [0014]    The formation of the recessed portion  16  in the head  10  of the shock absorbing hammer  1  reduces the mass of the part of the head  10  adjacent to the handle  20 , and thus, when the user operates the shock absorbing hammer  1  to hit against an object, a major part of the counterforce thus produced will be transferred through the bell face  14  along the longitudinal direction T of the head  10 , and only a small amount of the counterforce will be transferred through the recessed portions  16  to the handle  20 , achieving damping and effort-saving effects. 
         [0015]    Further, the recessed portions  16  can be directly easily formed on the head  10  by using machining tool, and thus the fabrication of the shock absorbing hammer  1  is quite simple. Unlike the prior art design that needs to make holes through the head  10 , the formation of the recessed portions  16  on the cheeks  12  of the head  10  does not significantly affect the structural strength of the head  10 , and thus, the lifespan of the shock absorbing hammer  1  can be extended. 
         [0016]    The invention can also be applied to a ball-peen hammer. In the second embodiment of the present invention, as illustrated in  FIG. 3 , the structure of the shock absorbing hammer  1  is substantially similar to the aforesaid first embodiment with the exception that the edge  18  is smoothly arched. 
         [0017]    Although a particular embodiment of the invention has been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the invention. Accordingly, the invention is not to be limited except as by the appended claims.