Abstract:
A power massager to respectively work on the neck and shoulders of its user includes a drive unit to drive two press plates to oscillate for massaging the neck; two finger press units coupled to a transmission shaft on the outer sides of both press plate; each finger press unit being separately provided a hammer; and the hammer as driven by the transmission shaft continuously operates to massage the shoulders.

Description:
BACKGROUND OF THE INVENTION  
       [0001]     (a) Field of the Invention  
         [0002]     The present invention is related to a power massager, and more particularly, to one that provides finger pressing and kneading effects respectively on one&#39;s neck and shoulders.  
         [0003]     (b) Description of the Prior Art  
         [0004]     For reasons of being subject to excessive stress of longer hours of working or studying, people today are vulnerable to stiff and sour neck and/or shoulders. Therapy to cure sour shoulders varies depending on the particular cause. Among the therapies available, proper massage may be so far the most direct and effective method to mitigate the stiff and sour neck and/or shoulders. After the proper massage, symptom including poor contraction of blood vessels and circulation as well as the involuntary contraction and stiffness of the muscles is significantly improved while the accumulation of those substances blamed for physical pains are eliminated by metabolized to avoid the malicious cycling of physical pains.  
         [0005]     The idea of relaxing one&#39;s bones and muscles to get rid of fatigue is originated from Chinese medicine that promotes the massage by guiding and pressing on the affected part of the human body. By applying the manual skills of pressing and touching, or by means of general exercise of the joints and muscles, the circulation at the local part and even the general mechanism of a human body can be improved. As the distribution of one&#39;s critical points of nerve system and muscles vary on one&#39;s body, the technique and method of massage also differ.  
         [0006]     Most of the power massagers available in the market operate by mechanism transmission to simulate the kneading action by fingers (or palms) to massage one&#39;s neck.  
         [0007]     However, only by proper finger pressing to relax the muscles of the shoulders, the sour shoulders can be relieved. Therefore, the prior art that works only on the neck is not able to satisfy the purpose of massaging the neck and the shoulders at the same time.  
       SUMMARY OF THE INVENTION  
       [0008]     The primary purpose of the present invention is to provide a power massager that works on one&#39;s neck and shoulders at the same time. To achieve the purpose, two press plates oscillate are adapted to knead one&#39;s neck on both sides. Furthermore, at both ends of a transmission shaft to drive both press plates are respectively coupled with a finger press unit and each finger press unit is disposed with one or a plurality of hammer driven by the transmission shaft to simulate the finger press motion. Both of the pair of the pressing plates and the pair of the finger press units operate synchronously to produce kneading and finger pressing effects on the neck and shoulders of the user. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0009]      FIG. 1  is a perspective view of the present invention.  
         [0010]      FIG. 2  is an exploded view of the present invention.  
         [0011]      FIG. 3  is a sectional view showing the construction of a drive unit in the present invention.  
         [0012]      FIG. 4  is a sectional view showing the construction of a pair of press plates in the present invention.  
         [0013]      FIG. 5  is a perspective view of a finger press unit in the present invention.  
         [0014]      FIG. 6  is a sectional view showing the construction of the finger press unit in the present invention.  
         [0015]      FIG. 7  is a schematic view showing a status of the present invention is in use.  
         [0016]      FIG. 8  is a perspective view showing another type of finger press unit in the present invention.  
         [0017]      FIG. 9  is a perspective view of the present invention further adapted with a roller unit. 
     
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS  
       [0018]     Referring to  FIGS. 1 and 2 , a preferred embodiment of the present invention is essentially comprised of a base  10 , a drive unit  20 , two press plates  30 , two finger press units  40  and a transmission shaft  51 . Wherein, the base  10  related to a primary mechanical structure for the assembly of all related members contains multiple retaining walls  11  to secure the members of the present invention and two handles on both sides to help the user to hold steady the massager of the present invention.  
         [0019]     As illustrated in  FIGS. 2 and 3 , the drive unit  20  is comprised of a motor  21  to drive the transmission shaft to revolve. In practice, an active worm gear  2  is connected to the spindle of the motor  21  and a passive gear  23  engaged with the active worm gear  22  is connected to the transmission shaft. The motor  21  drives the transmission shaft  51  that is placed at a right angle to the spindle of the motor  21  to revolve through the transmission of the active worm gear  22  and the passive gear  23 .  
         [0020]     Each of both press plates  30  is coupled to the transmission shaft  51  by means of an oblique disk  52  as illustrated in  FIGS. 2 and 4 . Wherein, a reversing member  53  is disposed at where between one press plate  30  and the transmission shaft  51 . A 180-degree insertion slot  531  is disposed to the reversing member  53 . The transmission shaft  51  is coupled to the reversing member  53  by having a pin  532  inserted into the slot  531 . Accordingly, when the reversing member  53  drives the transmission shaft to engage in reciprocal revolution for 180 degrees, both press plates  30  as driven by their respective oblique disks  52  reciprocally oscillate in cycle of clamping and releasing to massage the neck of a user by kneading or rubbing; or alternatively, both press plates  30  are positioned in parallel with each other by means of the reversing member  53  to manipulate the naprapathy.  
         [0021]     Both finger press units  40  are disposed at where externally to both press plates  30  as illustrated in  FIGS. 5 and 6 . Wherein, each finger press unit  40  is adapted with one or a plurality of hammer  41  to simulate continuous finger press motions as driven by the transmission shaft  51 . In practice, each hammer is provided with a through shaft  42  at its root where penetrating into the base  10 , and the through shaft  42  is secured in position by a pair of retaining walls  11  in the base  10 . A coil  43  is inserted onto the hammer  41 , and a cam  54  is each disposed at both ends of the transmission shaft  51 . The hammer  41  and the cam  54  contact each other by means of the coil  43  in normal status. The through shaft  42  at the tail of the hammer  41  is inserted with a roller  44  to contact the cam  54 . Accordingly, as the cam  54  revolves, it pushes against the hammer  41  to reciprocally expand and retract in the direction of following its axis. Furthermore, a third finger press unit  40  is disposed at the center of the transmission shaft as illustrated in  FIG. 8 . The third finger press unit  40  is also provided with one or a plurality of hammer  41  driven by the transmission shaft  51  to execute continuous motion of finger press.  
         [0022]     As driven by the same drive unit  20  as illustrated in  FIG. 7 , the power massager of the present invention has its both press plates  30  massage the neck of a user and both finger press units  40  synchronously massage shoulders of the user. Alternatively, the third finger press unit  40  executes naprapathy longitudinally on the spine of the user while the other two finger press units  40  work laterally on both shoulders of the user when driven by the same transmission shaft  51 . As illustrated in  FIGS. 4 and 7 , a resilient cover  13  is further disposed to the base  10  to cover up both press plates  30  to improve use safety and comfort.  
         [0023]     A rolling member  60  is further adapted to the transmission shaft  51  as illustrated in  FIG. 9  in a structure similar to that of a cam. The rolling member  60  is located at where comparatively closer to the center of the transmission shaft  51  to massage the back of the user by rolling and pressing.  
         [0024]     The prevent invention provides a power massager that produces massage effects by kneading and finger pressing separately on the neck and shoulders of the user at the same time, and the application for a patent is duly filed accordingly. However, it is to be noted that that the preferred embodiments disclosed in the specification and the accompanying drawings are not limiting the present invention; and that any construction, installation, or characteristics that is same or similar to that of the present invention should fall within the scope of the purposes and claims of the present invention.