Abstract:
A massage device of the present invention includes a base cover; a guiding device, wherein the guide device comprising a plurality of guiding rails positioned in a middle of the base cover; and a moving base, which suspending above the guiding device; wherein the moving base comprising a bottom and a shield covered thereon to form a compartment; the moving base is mounted on the guiding device in a sleeve form. The moving base comprising power equipment mounted between the bottom and the shield, transmission system and massage system mounted on the shield.

Description:
FIELD OF THE INVENTION  
       [0001]     The present invention relates to massage devices with novel structures, and particularly to a massage device using worm to drive worm wheel so as to attain diversiform massage effects.  
       BACKGROUND OF THE INVENTION  
       [0002]     Conventional massage devices, as disclosed in Taiwan Patent No. 238543 and 435223, generally utilize worm to drive two correspondingly configured worm wheels to rotate relative to each other so as to make kneading components eccentrically coupled on the worm wheels to move circularly to perform massage function. At present, the massage devices are usually assembled on neck-massage parts of massage chairs or presented in an individual massage chair. However, the main drawback of the above-mentioned massage device is that only provide a single massage effect.  
         [0003]     Hence, it is desired to provide a massage device to solve the above-mentioned problems.  
       SUMMARY OF THE INVENTION  
       [0004]     To overcome the above drawbacks of prior art, a main object of the present invention is to provide a massage device which can provide various massage effects.  
         [0005]     To attain the above object, a massage device comprises a base cover; a guiding device, wherein the guide device comprising a plurality of guiding rails positioned in a middle of the base cover; and a moving base, which suspending above the guiding device; wherein the moving base comprising a bottom and a shield covered thereon to form a compartment; the moving base is mounted on the guiding device in a sleeve form. The moving base comprising power equipment mounted between the bottom and the shield, transmission system and massage system mounted on the shield.  
         [0006]     According to an embodiment of the invention, the moving base further comprising at least one motor; at least one worm on end of the motor; and a plurality of worm wheels joggled with the worm; wherein each of the worm wheel has its top end mounted in a middle shaft bores of the massage system, and has its bottom end sleeved in a first small gear; a big gear is mounted on one side of the first small gear; an intermediary gear is provided for joggling with the big gear and the small gear; a second small gear is provided under the big gear to joggle with a rack; at least one kneading heads mounted on the massage system.  
         [0007]     According to another embodiment of the invention, the moving base comprising two motors set in a certain angle; each of motor having at least one worm, at least one worm wheels to joggle with the worm; wherein each of the worm wheel having a first small gear on its bottom, a big gear mounted at side of the first small gear, an intermediary gear to joggle with the big gear and the small gear; a second small gear provided at the big gear and joggling with a rack; the massage system having at least one rotation shelf in which is provided at least one kneading heads. There are two mushroom-shaped kneading heads, which are symmetrically mounted on the rotation shelf; a control circuit is provided in the moving base to control the two kneading heads work individually or coordinately. A plurality of route switches are provided on side of the guide rails. A fix bore is formed on the back of the base cover for inserting a bolt so as to prevent movement of the moving base; a power wire of the massage device has its outer end extending through the bolt and fastened on the bolt.  
         [0008]     According to a further embodiment of the invention, the moving base comprises a bottom; a motor in front of the bottom; at least one worm coupled to one end of the motor; at least one worm wheel joggled with and transmitted by the worms; at least one rack provided on side of the guide rail of the bottom; a transmission gear joggled between the worm wheel and the rack; a support plate set on rear of the bottom; at least one bolt shafts positioned on both sides of the support plate; at least one notches for localizing the massage system; and at least one guide rail formed on the moving base. The massage device further comprising: two symmetrical rolling wheels; at least one bracket to connect with the rolling wheels; and at least one bracket sleeve for receiving the bracket.  
         [0009]     According to an embodiment of the invention, the moving base comprising at least one support piece with groove formed on its bottom; a bottom on the support piece; a motor positioned on the bottom; at least one worm connecting with one end of the motor; at least one worm wheels joggled with and transmitted by the worm; a transmission gear joggled with the worm wheel; a small gear joggled with the guide rail; an intermediary gear joggled between the small gear and the transmission gear; a media plate, a beating means having two kneading heads, and an eccentric wheel to connect with at least one kneading head provided at the other end of the motor. According to a further embodiment, the moving base comprising: a bottom; a motor mounted on the bottom; at least one worm coupled to one end of the motor; at least one worm wheels joggled with and transmitted by the worm; an intermediary gear joggled between the guide rail and the worm wheel; an eccentric wheel connected on both sides of the worm wheel; a bolt shaft protruded on the eccentric wheel; a rotation plate connected with the bolt shaft in its middle; at least one kneading plate mounted on one end of the rotation plate; a rotation shaft provided on the other end of the rotation plate; a guide block with a guide slot to receive the rotation shaft; at least one grooves formed in the shield for being extended through by the kneading plate. The kneading plate comprising an arc-bended body and a plurality of round rubber plates on the body.  
         [0010]     The invention has the following advantages comparing to the prior art as: firstly, through the rotation of the kneading head transmitted by the worm wheel, worm and gear (rack) and movement of the moving base coordinated with guide rail and rack in bottom, curved guide rail made as the outline of people&#39;s back can better imitate the motion of manually massage to achieve the imitation effect of manually massage. Kneading and massage effect on different parts of body can make people feel more comfortable. The operation frequency of the massage device can be regulated as required by the person to give a gentle massage effect. The fixed bolt is added to the massage device to prevent the movement of the moving base when it is unused, which make it easy to move, deposit and have a high security to avoid unusual work electricity.  
         [0011]     For the purpose of making the invention easier to understand, several particular embodiments thereof will now be described with reference to the appended drawings in which: 
     
    
     DESCRIPTION OF THE DRAWINGS  
       [0012]      FIG. 1  is a perspective view of a moving base with a dual drive motor according to a first embodiment of the invention;  
         [0013]      FIG. 2  is a perspective view of a massage device with a dual drive motor according to a first embodiment of the invention;  
         [0014]      FIG. 3  is an exploded view of  FIG. 1 ;  
         [0015]      FIG. 4  is a perspective view of a massage device with a single drive motor according to a second embodiment of the invention;  
         [0016]      FIG. 5  is an exploded, perspective view of a moving base with a single drive motor according to a second embodiment of the invention;  
         [0017]      FIG. 6  is an assembled view of the moving base of  FIG. 5 ;  
         [0018]      FIG. 7  is a schematic view to show operation of the massage device of  FIG. 4 ;  
         [0019]      FIG. 8  is a perspective view of a massage device according to a third embodiment of the invention;  
         [0020]      FIG. 9  is an exploded view of  FIG. 8 ;  
         [0021]      FIG. 10  is a perspective view of a massage device according to a fourth embodiment of the invention;  
         [0022]      FIG. 11  is an exploded view of  FIG. 10 ;  
         [0023]      FIG. 12  is a perspective view of a massage device according to a five embodiment of the invention;  
         [0024]      FIG. 13  is an exploded view of  FIG. 12 ; and  
         [0025]      FIG. 14  is a perspective view of a shield of the massage device of  FIG. 12 . 
     
    
     DETAILED DESCRIPTION OF THE INVENTION  
       [0026]     Referring to  FIGS. 1-3 , according to a first embodiment of the invention, a massage device comprises a base cover  10 , a guide device  13  and a moving base  3 . The guide device  13  is constituted by a plurality of guide rails  131  positioned in the middle of the base cover  10 . The moving base  3  comprises a bottom  11  and a shield  12 . The shield  12  covers on the bottom  11  so as to form a chassis  1 . Two motors  4  and  4 ′ are assembled between the bottom  11  and the shield  12 ; a transmission system  5  and a massage system  6  positioned on the shield  12 . The moving base  3  is suspended above the guide device  13  and can move in an area defined by the guide device  13 . In the invention, the motors  4  and  4 ′ are set in a certain angle, which are provided with worm  51  and  51 ′ on its output end. Two worm wheels  52  and  52 ′ are joggled with and drived in-phase by the worm  51  and  51 ′ of the motor  4  and  4 ′ respectively. The two worm wheels  52  and  52 ′ are pivoted in the moving base  3  comparatively. Each of worm wheel shafts  52 ′a of the worm wheels  52  and  52 ′ has its top end mounted in a corresponding middle shaft bore  611  of each rotation shelve  62  of the massage system  6 , and has its bottom end sleeved in a small gear  53 . Also, a big gear  54  for transmission is mounted on one side of the small gear  53 . An intermediary gear  55  is provided for joggling with the big gear  54  and the small gear  53 . In addition, anther small gear is provided under the big gear  54  to joggle with a rack  17 . Two kneading head  61  and  61 ′ are mounted in each of the rotation shelves  62 , which are symmetrically provided on both sides of the middle shaft bores  611 . In an embodiment, each of the kneading heads  61  and  61 ′ have a shape of mushroom.  
         [0027]     During operation, firstly, power is supplied for the motors  4  and  4 ′; then the motor  4  and  4 ′ are driven to rotate so as to drive a first transmission system consisting of the worm  51  and the worm wheel  52 , and a second transmission system consisting of the worm  51 ′ and the worm wheel  52 ′. The worms  51 ,  51 ′ are connected with the motors  4 ,  4 ′ and drive the worm wheels  52 ,  52 ′ to rotate on both sides thereof. In the invention, the rotation shelves  62 ,  62 ′ are rotated along with the worm wheels  52 ,  52 ′ due to being fixed thereon. Then, the kneading heads  61 ,  61 ′ on the rotation shelves  62  and  62 ′ are rotated along with the rotation of rotation shelves  62  and  62 ′. In the meantime, the kneading heads  61 ,  61 ′ are rotated by themselves. When a person has its back rested on the kneading heads  61 ,  61 ′, he will have a feeling of back-kneading by people&#39;s fingers. In the embodiment, because the two worm wheels  52  and  52 ′ rotate in counter-direction, and the kneading heads  61 ,  61 ′ are comparatively set on the rotation shelves  62 ,  62 ′, the pressure exerted to the person can be changed so as to achieve an imitated manual massage effect. When the worm wheel  52  rotates, another worm wheel  52 ′ is transmitted with speed-down to the big gear  54  through the small gear  53  and the intermediary gear  55 . The small gear above the big gear  54  is joggled with the rack  17  in the bottom  1  so as to drive the moving base  3  move on back of person and attain an imitated way of manual massage. The guide rail  131  is used for guiding the moving base  3  and making its movement smoothly. The two motors  4 ,  4 ′ are controlled by circuit of the massage device to make them both or solely work, thus achieving various massage effects.  
         [0028]     As shown in  FIGS. 4-6 , according to a second embodiment of the invention, a massage device comprises a base cover  10 , a guide device  13  and a moving base  3 . The moving base  3  comprises a bottom  11  and a shield  12  covered thereon so as to form a chassis. The guide device  13  is constituted by a plurality of guide rails  131  positioned in the middle of the base cover  10 . The moving base  3  comprises a single motor  4  which is assembled between the bottom  11  and the shield  12 ; a transmission system  5  and a massage system  6  positioned on the shield  12 . The moving base  3  is suspended above the guide device  13  and can move in an area defined by the guide device  13 . In the invention, the motor  4  is provided with worm  51  on its output end. Two worm wheels  52  and  52 ′ are joggled with and drived in-phase by the worm  51  of the motor  4 . The two worm wheels  52  and  52 ′ are pivoted in the moving base  3  comparatively. Each of worm wheel shafts  52 ′a of the worm wheels  52 ,  52 ′ has its top end mounted in a middle shaft bore  611  of each rotation shelves  62 ,  62 ′ of the massage system  6 . Two kneading head  61  and  61 ′ are mounted on two fixers  612  which are symmetrically provided on both sides of the middle shaft bores  611 . The kneading heads  61  and  61 ′ have a shape of mushroom. A fix bore  15  is formed on the back of the base cover  10  for inserting a bolt  14  so as to prevent movement of the moving base  3 . Power wire  16  of the massage device has its outer end extending through the middle bore of the bolt  14  and fastened on inner end of the bolt  14 . During operation, the bolt  14  must be pulled out firstly to restore the status of free movement of the moving base  3 , and then power supply can be provided so as to avoid accidents. In the embodiment, a shield block  19  is provided on back of the bottom  11  corresponding to the bolt  14 . When the bolt  14  being pulled out, the shield block  19  will cover the fix bore  15  automatically under the press of spring means. This will prevent any other things falling into the fix bore  15  and affect the movement of the moving base  3 . The rotation shelves  62  are positioned at the wheel shafts  52 ′a of the worm wheels  52 . In the embodiment, a worm wheel  52 ′ is connected with a small gear  53 . The small gear  53  is joggled with an intermediary gear  55 . The worm wheel  52 ′ is transmitted with speed-down to the big gear  54  through the small gear  53  and the intermediary gear  55 . In addition, anther small gear is provided under the big gear  54  to joggle with a rack  17 . In the embodiment, several route switches  18  are set along the moving route of the moving base  3  in the base cover  10 . The route switch  18  can make the moving base  3  stay at different positions for massaging different body portion conveniently.  
         [0029]     During operation, firstly, power is supplied for the motor  4  and then the motor  4  is driven to rotate so as to drive a transmission system with worms and worm wheels. That is, the worms  51  is connected with the motor  4  and drive the worm wheels  52 ,  52 ′ on both sides thereof to rotate. In the invention, the rotation shelves  62 ,  62 ′ are rotated along with the worm wheel  52 ,  52 ′ due to being fixed thereon. Then, the kneading heads  61 ,  61 ′ on the rotation shelves  62  and  62 ′ are rotated along with the rotation of the rotation shelves  62  and  62 ′. In the meantime, the kneading heads  61 ,  61 ′ are rotated by themselves. When a person has its back rested on the kneading heads  61 ,  61 ′, he will have a feeling of back-kneading by people&#39;s fingers. In the embodiment, because the two worm wheels  52  and  52 ′ rotate in counter-direction, and the kneading heads  61 ,  61 ′ are comparatively set on the rotation shelves  62 ,  62 ′, the pressure exerted to the person can be changed so as to achieve an imitated manual massage effect. When the worm wheel  52  rotates, another worm wheel is transmitted with speed-down to the big gear  54  through the small gear  53  and the intermediary gear  55 . The small gear above the big gear  54  is joggled with the rack  17  in the bottom  11  so as to drive the moving base  3  move on back of person and attain an imitated way of manual massage. The guide rail  131  is used for guiding the moving base  3  and making its movement smoothly.  
         [0030]     As shown in  FIGS. 8-9 , according to a third embodiment of the invention, a massage device comprises a base cover  10 , a guide device  13  and a moving base  3 . The moving base  3  comprises a bottom  11  and a shield  12  covered thereon so as to form a chassis. The guide device  13  is constituted by a plurality of guide rails  131  positioned in the middle of the base cover  10 . The moving base  3  comprises a single motor  4  which is assembled between the bottom  11  and the shield  12 ; a transmission system  5  and a massage system  6  positioned on the shield  12 . The moving base  3  is suspended above the guide device  13  and can move in an area defined by the guide device  13 . In the embodiment, the motor  4  is mounted in a groove  141  at front end of the bottom  11 . The moving base  3  further comprises a guide rail  131  with a rail groove  1311 , a worm  51  on the output end of the motor  4 , a worm wheels  52 , a rack  17  provided on side of guide rail  131 . The worm wheel  52  is joggled with and drived by the worm  51 . The moving base  3  still comprises an intermediary gear  55  and a support piece  142 . The intermediary gear  55  is joggled between the worm wheel  52  and the rack  17 . The support piece  142  is provided on rear of the bottom  11 , both sides of which have two bolt shafts  1421  protruded in the rail groove  1311  and move therein. Two notches  1422  are provided both ends of top portion of the support piece  142  for pitch of the massage system  6 . The kneading heads  61 ,  61 ′ are positioned on a top plate  143  of the moving base  3 . The massage system  6  comprises two rolling wheels  162 ,  162 ′ in symmetry, two brackets  63  and  63 ′ hinged with the rolling wheels  162 ,  162 ′ and two bracket sleeves  64 ,  64 ′. The rolling wheels  162 ,  162 ′ can be made in different shapes, such as column or gear. The main shafts of the brackets  63 ,  63 ′ extend through through-holes  1431  of the top plate  143  of the moving base  3 , and being fixed on the support piece  142  below the top plate  143 . The support piece  142  is removable and the kneading head  61  and  61 ′ can move up-and-down together with the support piece  142 . The guide rail  131  has a curve similar to human body curve, which is provided at outer side of the rack  17 . Also, a curved groove  1311  is formed in a side of the guide rail  131  adjacent to the rack  17 . The bolt shafts  1421  are engaged in the rail groove  1311  of the guide rail  131 .  
         [0031]     During operation, after start-up of the motor  4 , the worm  51  makes transmission to the intermediary wheel  55 , and the intermediary wheel  55  moves back-and-forward relative to the rack  17 . Because the intermediary wheel  55  is fixed on the moving base  3 , so the moving base  3  also moves back-and-forward along the rack  17  at the same time. In addition, because the rack  17  is joggled with the intermediary wheel  55 , so the moving base  3  will not sway when moving back-and-forward. In a further embodiment, a groove can be formed on a bottom plate of the moving base  3 , and a corresponding rail can be set on the bottom  11  so that the moving base  3  is more stably during movement. At that moment, the kneading head  61 ,  61 ′ will move together with the moving base  3 . The support piece  142  moves along the rail grooves  1311  of the guide rails  131 . Because the groove  1341  is curved, so the kneading head  61  and  61 ′ have a curved movement along human body curve and do a massage. In addition, the rolling wheels  162  and  162 ′ can rotate automatically to a best angle and will not get jammed. Thus the user do not have to sit straight intentionally, while sitting at ease and get a best massage effect. Furthermore, the bolt shafts  1421  can be replaced by a groove and the guide rail  131  is embedded in the groove so as to improve the stability of movement of the moving base  3 . Understandably, it can provide protruded teeth (not shown) on the guide rail  131  to replace the rack  17 .  
         [0032]     As shown in  FIGS. 10-11 , according to a fourth embodiment of the invention, a massage device comprises a base cover  10 , a guide device  13  and a moving base  3 . The moving base comprises a bottom  11  and a shield  12  covered thereon so as to form a chassis. The guide device  13  is constituted by a plurality of guide rails  131  positioned in the middle of the base cover  10 . The moving base  3  comprises a single motor  4  which is assembled between the bottom  11  and the shield  12 ; a transmission system  5  and a massage system  6  positioned on the shield  12 . The moving base  3  is suspended above the guide device  13  and can move in an area defined by the guide device  13 . The moving base  3  further comprises a support piece  142 . A rail groove  1311  is formed in the guide rail  131  which symmetrically positioned at a bottom of the support piece  142 . In the embodiment, the bottom  11  is mounted on the support piece  142 , and the motor  4  mounted on the bottom  11 . A worm  51  is provided on the front output end of the motor  4 ; a worm wheel  52  are provided to joggle with and drived by the worm  51 . A big gear  54  is provided to joggle with the worm wheel  52 . A small gear  53  is provided to joggle with the rail groove  1311  of the guide rail  131 . An intermediary gear  55  is provided to joggle with the small gear  53  and the big gear  54 . On the back output end of the motor  4  there are a media plate  41 , an eccentric wheel  42 , and a beating means  6 . The beating means  6  comprises two kneading heads  61  and  61 ′ which are connected like a teeterboard. The beating means  6  has an arc-shaped connecting rod  62 . A through-hole  63  is formed in the connecting rod  62 . A cross shaft  64  extends through the through-hole  63  to be fixed on the bottom  11  of the moving base  3 . The beating means  6  can swing left-and-right around the cross shaft  64 . The guide rail  131  has a curve similar to human body curve, which is mounted on the bottom  11 . The small gear  53  is joggled with the rail groove  1311  of the guide rail  131 .  
         [0033]     During operation, after start-up of the motor  4 , an output end of the motor  4  drives the worm  51  and then the worm wheel  52  to rotate. The big gear  54  is bigger than the worm wheel  52  so as to achieve a function of speed-down due to high-speed rotation of the motor  4 . T small gear  53  is joggled with the rail groove  1311  of the guide rail  131  so as to make the moving base  3  to do multiple movement, one of which is a planar movement along the base cover  10 ; the other is a vertical movement. In the embodiment, another output end of the motor  4  drives the media plate  41  to rotate so as to make the eccentric wheel  42  do a multiple movement with up-and-down vibration and left-and-right swing. In addition, because the eccentric wheel  42  is connected with the beating means  6 , so the massage device will do a multiple movement with an up-and-down vibration around a centric shaft thereof and a horizontal swing. A shield  12  is provided on the beating means  6 , which is fixed on the moving base  3 . Also, two through-openings  500  are formed on the shield  12  corresponding to the kneading heads  61  and  61 ′ so that the kneading heads  61  and  61 ′ can extend through the through-openings to perform massage function. In the embodiment, there are two ways to improve the moving stability of the moving base  3 . The first way is that forming a hole on bottom portion of the moving base  3 , and forming a groove on the bottom  11  which can receive the rolling wheels with straight rod, the straight rod mounting in the hole of the moving base  3 . The second way is that forming a hole on bottom portion of the moving base  3 , and forming a rack on the bottom  11 , forming a support piece  142  with a groove on the bottom of the moving base  3  corresponding to the rack; the rack engaging with the groove; the support piece  142  also having a straight rod  1421  to mount in the hole of the bottom of the moving base  3 . Due to the curve-shaped guide rail  131 , the user do not have to sit straight intentionally, but just sit at ease. The curvilinear movement of the moving base  3  can make the beating means  6  to beat human body, such as back.  
         [0034]     As shown in  FIGS. 12-14 , according to a five embodiment of the invention, a massage device comprises a base cover (similar to the base cover in the above-mentioned embodiments, not shown), a guide device  13  and a moving base  3 . The moving base  3  comprises a bottom  11  and a shield  12  covered thereon so as to form a chassis. The guide device  13  is constituted by a plurality of guide rails (similar to the base cover in the above-mentioned embodiment, not shown) positioned in the middle of the bottom  11 . The moving base  3  comprises a motor  4  which is assembled between the bottom  11  and the shield  12 ; a transmission system  5  and massage system  6  positioned on the shield  12 . The moving base  3  is suspended above the guide device  13  and can move in an area defined by the moving base  3 . The moving base  3  further comprises a worm  51  on the output end of the motor  4 , a worm wheel  52 , a rack  17  provided on side of the guide rail. The worm wheel  52  is joggled with and drived by the worm  51 . The moving base  3  still comprises a small gear  53  which is joggled between the worm wheel  52  and the rack  17 . An eccentric wheel  42  is connected with both ends of the worm wheel  54 . The eccentric wheel  42  has a bolt shaft  422  protruded at the eccentricity of the eccentric wheel  42 . A rotation plate  65  is connected with the bolt shaft  422  in its middle, which has a kneading plate  651  fixed on one end thereof. The kneading plate  651  comprises an arc-bended body  6511  and a plurality of round rubber plates  6512 . The rotation plate  65  comprises a rotation shaft  652  extending from another end thereof. The rotation shaft  652  is engaged into a crescent-shaped guide slot  6531  which is formed in the middle of a guide block  653 . Two grooves  121  is symmetrically formed in the shield  12  for being extended through by the kneading plates  651 . The motor  4  has an output end to connect with a worm  51 . The worm  51  is joggled with the worm wheel  52  and the big gear  54 . The small gear  53  is fixed on the worm wheel  52  to joggle with the big gear  54 . Because of high-speed rotation of the motor  4  and a contact process during massage, a multilevel gear transmission is provided for speeding down. The rubber plates  6512  can use for massaging human body point. The rotation plate  65  substantially connects with the kneading plates  651  vertically. The eccentric wheel  42  has a bolt shaft  422  so as to make the kneading plates  651  rotate along with the eccentric wheel  42 . Due to the joint of bolt shaft  422  with the rotation plate  65  does not lie in a same line so that it is very difficult to make the kneading plate  651  move back-and-forth in a curve groove  6531 . To let the two kneading plates  651  can reach their peak in sequence and massage human body, the eccentric wheel  42  can be adjusted to make their rotate axis at different height, and at the same time the kneading plates  651  can be adjusted to embed the bolt shaft  422  in the curve groove  6531  of the guide block  653  steadily.  
         [0035]     During operation, the motor  4  drives the worm  51  to rotate and then the worm  51  drives the transmission system  5  to rotate. The transmission system  5  slows down the rotation speed of the moving base  3  by small gear  53  of the worm wheel  51 , small gear of the worm wheel  52  and the intermediary gear  55 . Thus making the moving base  3  move along the rack normally. The eccentric wheel  42  drives the two kneading plates  651 . Because the bolt shaft  422  is embedded in the curve groove  6531  of the guide block  653 , the two kneading plates  651  do not do circle movement for being constrained, but do a back-and-forth movement along an arc line like the shape of the curve groove  6531 . The rotation axis of the eccentric wheel  42  is mounted in the hole of the rotation plate  65 , so it won&#39;t get jammed. In this way, the two kneading plates  651  massage human body in turn as a manual “back treading”. To improve the moving stability of the moving base  3 , a guide rail  131  can be provided on the bottom  11  and a groove provided on bottom plate of the bottom  11  where the guide rail  131  is embedded in (not shown)  
         [0036]     It is understood that the invention may be embodied in other forms without departing from the spirit thereof. Thus, the present examples and embodiments are to be considered in all respects as illustrative and not restrictive, and the invention is not to be limited to the details given herein.