Patent Publication Number: US-11382824-B2

Title: Rotatable leg massage device

Description:
BACKGROUND of INVENTION 
     Field of Invention 
     The present invention relates to a massage device, and more particularly to a rotatable leg massage device. 
     Description of the Related Art 
     In modern life, people are under various stress and are easily suffer body aches. Therefore, various massage devices are employed to massage different parts of the body to ease the body tension. The general massage devices are divided into a body massage device such as a massage chair, a massage bed, etc., and a partial massage device such as a shoulder-neck massage belt, a waist massage belt or a calf and foot massage machine, etc. All of them employ rollers, airbags or vibration to generate mechanical press on corresponding body parts to relieve the tension of the muscles. 
     In particular, there are more and more people suffer soreness, tightness and water retention in their lower limbs. Therefore, lower limb massage mechanisms are developed to provide massage for lower limbs and feet. The lower limb massage device can be used alone or in combination with a massage chair. However, common lower limb massage mechanisms usually has a complicated massage mechanism which is requires too much space. 
     On the other hand, the lower limb massage mechanism in a massage chair can be used to lift and lower the massage chair to enhance the massage effect, but limits the use state of the lower limb massage mechanism. The lower limb massage mechanism requires the user sits down and places both legs on the lower limb massage mechanism, and the effective areas are limited to the calf, ankle or sole 
     Therefore, it is desirable to provide a rotatable leg massage device to mitigate and/or obviate the aforementioned problems. 
     SUMMARY OF THE INVENTION 
     An objective of present invention is to provide a rotatable leg massage device, which is capable of improving the above-mention problems. 
     In order to achieve the above mentioned objective, a rotatable leg massage device has a base and a swinging arm. The base has two opposing assembling posts at one end and a limiting baffle behind and between the two assembling posts. The swinging arm has a massaging end and a swinging end, the massaging end is provided with a respective massaging roller on two sides, a first motor is configured to rotate the two massaging rollers, the swinging end is disposed between the two assembling posts of the base, a second motor is disposed between the swinging end and the two assembling posts and configured to drive the swinging arm to rotate around the base. 
     Other objects, advantages, and novel features of invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is a perspective view of a preferred embodiment according to the present invention. 
         FIG. 2  is an exploded view of the preferred embodiment according to the present invention. 
         FIG. 3  is a plan view of the preferred embodiment according to the present invention. 
         FIG. 4  is a front view of the preferred embodiment according to the invention 
         FIG. 5  is a side view of the preferred embodiment according to the invention. 
         FIG. 6  is a schematic view showing the swing state of the preferred embodiment according to the present invention. 
         FIG. 7  is a schematic view showing a user sitting on the preferred embodiment according to the present invention. 
         FIG. 8  is another schematic view showing a user sitting on the preferred embodiment according to the present invention. 
         FIG. 9  is another schematic view showing a user sitting on the preferred embodiment according to the present invention. 
         FIG. 10  is a schematic diagram showing the user lying down on the preferred embodiment according to the present invention. 
         FIG. 11  is another schematic diagram showing the user lying down on the preferred embodiment according to the present invention. 
         FIG. 12  is another schematic diagram showing the user lying down on the preferred embodiment according to the present invention. 
         FIG. 13  is an exploded view of another embodiment according to the present invention. 
         FIG. 14  is a side view of another embodiment according to the present invention. 
         FIG. 15  is a schematic view of a swinging state of another embodiment according to the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Please refer to  FIGS. 1-4 . The rotatable leg massage device comprises: a base  10  and a swinging arm  20 . Two sides of the base  10  are each provided with a foot stand  11 , and the base  10  further has two opposing assembling posts  12  and a limiting baffle  13  behind and between the two assembling posts  12 . The limiting baffle  13  is U-shaped, and a highest point of the limiting baffle  13  is lower than the two assembling posts  12  such that the swinging arm  20  is able to have a rotation angle larger than 90° relative to the base  10 . The swinging arm  20  has a massaging end  21  and a swinging end  22 . The massaging end  21  end provided with a respective massaging roller  23  on two sides. The two massaging rollers  23  each further comprise a circular disk  231  connected to a shaft  232 , and the two circular disks  231  are provided with a plurality of massaging units  233  there between. The two massaging rollers  23  the two massaging rollers are both covered by a cloth cover  234 . The massaging end  21  further comprises a first motor  24 , the first motor  24  drives a central shaft  241  to rotate with the shaft  232  of the two massaging rollers  23  together. The swinging end  22  is disposed between the two assembling posts  12  of the base  10 , and a second motor  25  is disposed between the swinging end  22  and the two assembling posts  12  and configured to drive the swinging arm around the base. The second motor  25  is mounted in the swinging end  22  of the swing arm  20 , and both ends of the second motor  25  have a shaft rod  251  passing through the swinging end  22  and engaged with the two assembling posts  12 . The second motor  25  drive the swinging arm  20  to rotate around the base  10 . 
     Moreover, a first limit switch  14  is mounted in front of the two assembling posts  12  of the base  10 , a second limit switch  26  is mounted on the swinging arm  20  adjacent the swinging end  22 , and the first and second limit switches  14 ,  26  are both are electrically connected to the second motor.  25 . 
     For structural assembly and operation, please refer to  FIGS. 1-4  with  FIGS. 5 and 6 . The massaging end  21  of the swinging arm  20  is rotated by the first motor  24  and drives the two massaging rollers  23  to rotate, the swinging end  22  of the swinging arm  20  is provided with the second motor  25 , and the swinging end  22  is mounted between the two assembling posts  12  of the base  10  and the limiting baffle  13 . Since the second motor  25  is fixed on the swinging end  22  and the two shaft rods  251  passing through the swinging end  22  are fixed to the sides of the two assembling posts  12 . When the two shaft rods  251  are fixed, the second motor  25  operates with the shaft rod  251  as the axis to drive the swinging arm  20  to swing between the two assembling posts  12 . The first limit switch  14  is disposed in front of the two assembling posts  12  of the base  10  and the swinging arm  20  has a second limit switch  26  on its outside, when the swinging arm  20  is driven by the second motor  25  and swinging forward and to touch the first limit switch  14  of the base  10 , the switch is activated to make the second motor  25  to rotate reversely to swing the swinging arm  20  in the opposite direction. Conversely, when the swinging arm  20  swings back and touches the limiting baffle  13  with the second limit switch  26 , the second motor  25  is switched back to a forward rotation and causing the swinging arm  20  to swinging forward toward the front of the base  10 . Therefore, the swinging arm  20  accomplishes reciprocating swing movements, and the massaging rollers  23  of the massaging end  21  provide the massage effect of the lower limbs. Moreover, the limiting baffle  13  is lower than the two assembling posts  12 , which allows the swinging arm  20  to have a swing angle greater than 90 degrees on the base  10  and greatly increases the massage range for the lower limbs. 
     In addition, the previous switching method of the second motor  25  by using the limit switch is only one of the preferred embodiment of the present invention, and is not limited thereto, it can also be accomplished by setting a predetermined numbers of rotation of the second motor  25 , other sensing switches or gyroscopes for the switching, etc. to provide the switching effect for the rotation direction of the second motor  25 . 
     When the above structure is actually operated, as shown in  FIGS. 7, 8 , and  9 , the user sits on a chair, the massage device is placed in front of the chair, and user&#39;s feet are placed on the swinging arm  20 . When the first motor  24  and the second motor  25  are simultaneously activated, the two massaging rollers  23  are rotated by the first motor  24  and massage the lower limb muscles via the massaging unit  233 , while the swinging arm  20  moves with the second motor  25 , and the two massaging rollers  23  of the massaging end  21  massages along the feet, ankles, calves, back of the knees and thighs to achieve a lower limb circulation massage. Furthermore, when the calves are been massaged, the feet can be lifted up to relax the leg muscles, which greatly enhances the massage effect. 
     Secondly, the first motor  24  and the second motor  25  are connected to a controller (not shown), and the power of the first motor  24  can be controlled by the controller to adjust the speed of the two massaging rollers  23  and the massage force. The controller can also be used to control the second motor  25  to be on or off, and by fixing the angle of the swinging arm  20  to provide a fixed-point massage at the sole of the foot, the calf muscle, the muscle of the back of the knee or the thigh muscle. 
     In addition, when the massage mechanism is used, the angle of the swinging arm  20  can be adjusted freely, so the user can have the lower limb be massaged while lying down or sleeping. Please also refer to the  FIGS. 10,11 and 12 , when the swinging arm  20  is brought up by the second motor  25  to form a raised state, the leg can be supported upwards and higher than the heart, which helps the blood return to the heart and the lungs for oxygen to help leg muscles to rest and relax, and then the massaging rollers  23  massage the muscle to eliminate soreness, fatigue and other discomforts for better blood circulation. 
     For another embodiment of the structure, please refer to  FIGS. 13, 14 , and  15 . The bottom side of the swinging arm  22  of the swinging arm  20  is provided with an accepting slot  221 , both sides of the accepting slot  221  have an assembling aperture  222  passing through the swinging end  22 , the second motor  25  is housed in the accepting slot  221 , and the shaft rods  251  on both sides of the second motor  25  is passed through the two assembling apertures  222  connecting the swinging end  22  between the two assembling posts  12 . Since, the second motor  25  is fixed between the two assembling posts  12 , the second motor  25  is capable of driving the two shaft rods  251  to rotate, and the swinging arm  20  is driven by the two shaft rods  251  between the two assembling posts  12 . The first limit switch  14  in front of the two assembling posts  12  of the base  10  and the second limit switch  26  on outside of the swinging arm  20  are configured for controlling the swinging movements of the swinging arm  20  and the two massaging rollers  23  of the massaging end  21  to achieve the massaging effect. 
     With the structure of the above specific embodiment, the following benefits can be obtained: (1) The massaging mechanism of the present invention is composed of a base  10  and a swinging arm  20 , and the massaging end  21  of the swinging arm  20  is provided with the two massaging rollers  23 . When the structure is used, the simultaneous actuations of the first motor  24  and the second motor  25  can achieve the swing circulation massage effect on the lower limbs, which helps to expand the range of massage. Furthermore, when the swinging arm  20  swings upward to lift the lower limb for support to achieve muscle relaxation, thereby improving the massage effect of the lower limb muscles. 
     (2) The swinging arm  20  can also be switched for a fixed point massage, which can locally emphasizes the lower limb muscles with more soreness and discomfort, and increase the practicability of the structure. 
     (3) The massage device can operate when the user is sitting or lying down with the swinging arm  20  when the user is lying down. When the swinging arm  20  is brought up by the second motor  25  to form a raised state, the leg can be supported upwards and higher than the heart, which helps the blood return to the heart and the lungs for oxygen to help leg muscles to rest and relax, and then the massaging rollers  23  massage the muscle to eliminate soreness, fatigue and other discomforts for better blood circulation. 
     (4) The swinging arm  20  can be swung to the bottom to be horizontal with the base  10 , which greatly reduces the volume of the massage device for easy storage. 
     Although the present invention has been explained in relation to its preferred embodiment, it is to be understood that many other possible modifications and variations can be made without departing from the spirit and scope of invention as hereinafter claimed.