Patent Publication Number: US-11382818-B2

Title: Body stretcher

Description:
BACKGROUND OF THE INVENTION 
     1. Technical Field 
     The invention relates to the technical field of the manufacturing of fitness equipment, in particular to a body stretcher. 
     2. Description of Related Art 
     In today&#39;s information era, many people are suffering from cervical spondylosis and lumbar spondylosis due to frequent use of mobile phones and long-term use of computers by office workers. Body stretching is an effective way to prevent cervical spondylosis and lumbar spondylosis. The applicant has put forward a stretcher in Chinese Utility Model Patent No. ZL201120160925.4 disclosed on Dec. 11, 2011. This stretcher, used for body stretching, can stretch the lumbar vertebra and legs only, but cannot stretch the whole body. Particularly, this stretcher cannot stretch the cervical vertebra and the lumbar vertebra at the same time. 
     BRIEF SUMMARY OF THE INVENTION 
     The technical issue to be settled by the invention is to provide a body stretcher which is able to stretch the whole body of people and particularly is able to stretch the cervical vertebra and lumbar vertebra of the body at the same time. 
     The technical solution adopted by the invention to fulfill the above objective is as follows: a body stretcher comprises a floor-standing frame, wherein a horizontal plate is fixedly connected to the upper surface of the floor-standing frame. The body stretcher is characterized in that a sleeve tube is arranged on the floor-standing frame, one end of the sleeve tube is connected with a headrest, a plurality of pulleys are mounted on the headrest, a movable rod is inserted into the other end of the sleeve tube, an end, away from the sleeve tube, of the movable rod is fixedly connected with a foot hook frame, an end, inserted into the sleeve tube, of the movable rod is fixedly connected with a rack, and an elastic rope has an end connected with one end of the rack or the end, inserted into the sleeve tube, of the movable rod as well as an end winding across the plurality of pulleys to be connected with a head protector. 
     A support is fixedly arranged on the outer side of the sleeve tube. A receding through hole is formed in a position, corresponding to the support, of the outer side of the sleeve tube. A gear is mounted on the support and is engaged with the rack through the receding through hole. One end of a manual swing rod is hinged to the support. An active pawl is hinged to the manual swing rod and is close to the gear. One end of the active pawl is matched with a toothed groove of the gear. A check pawl is hinged to the support. A compression spring is mounted between the check pawl and the support and drives one end of the check pawl to be matched with the toothed groove of the gear. The manual swing rod can be swung to drive the gear to rotate through the active pawl or can be pushed to drive the active pawl and the check pawl to be separated from the gear. 
     Furthermore, two sides of the sleeve tube are each provided with a hinge base which is close to the headrest and is hinged to one end of a hand rest supporting rod. The other end of each hand rest supporting rod is fixedly connected with a hand rest rod which is sleeved with a protective jacket. The hand rest rods are perpendicular to the hand rest supporting rods. Users can have their left hand and right hand leaning against the two hand rest rods to exert strength and can also independently stretch and exercise the lumbar vertebra through the two hand rest rods. 
     Furthermore, one end of the manual swing rod is fixedly connected with a U-shaped base. A first connecting pin and a second connecting pin are mounted on the support. The gear and the U-shaped base are pivoted on the first connecting pin. The gear is located in the middle of the U-shaped base. The check pawl is pivoted on the second connecting pin. A third connecting pin is mounted on the U-shaped base. The active pawl is pivoted on the third connecting pin and is located in the middle of the U-shaped base. The third connecting pin is sleeved with a torsion spring. One end of the torsion spring leans against the U-shaped base, and the other end of the torsion spring presses against the active pawl to enable one end of the active pawl to be matched with the toothed groove of the gear. The first connecting pin, the second connecting pin, and the third connecting pin are arranged in parallel. 
     Preferably, the headrest is in an L shape. One end of the headrest is inserted in an inner hole in one end of the sleeve tube and is fixedly connected with the inner hole through a lock bolt. The number of the pulleys is two, and the two pulleys are respectively mounted at two ends of the headrest. 
     Furthermore, a plurality of positioning holes are formed in the end, inserted into the sleeve tube, of the headrest at intervals, and when the relative positions of the headrest and the sleeve tube are adjusted, the lock bolt is matched with one of the plurality of positioning holes. In this way, the relative positions of the headrest and the sleeve tube can be adjusted to adapt to users of different heights. 
     Preferably, the foot hook frame comprises a vertical rod and two cross rods fixedly connected to each of two sides of the vertical rod, wherein each cross rod is sleeved with a protective jacket, the lower portion of the vertical rod is fixedly connected with one end of the movable rod, and wheels are respectively mounted on two sides of the lower end of the vertical rod. 
     Preferably, the vertical rod comprises a lower vertical rod and an upper vertical rod, wherein the lower vertical rod is fixedly connected with one end of the movable rod, the upper vertical rod is telescopically inserted into the lower vertical rod and is fixedly connected with the lower vertical rod, two sides of the lower vertical rod are each fixedly connected with one cross rod, and two sides of the upper vertical rod are each fixedly connected with one cross rod. In this way, the distance between the two upper cross rods and the two lower cross rods can be adjusted so as to meet the usage requirements of different users. 
     Furthermore, a foot support frame is fixedly connected to the upper portion of a side, close to the foot hook frame, of the floor-standing frame and is provided with a plurality of horizontal support rods. Two sides of each horizontal support rod are each provided with a protective jacket. The two protective jackets on each horizontal support rod are connected through a clamping piece. In this way, users can use the body stretcher more comfortably. 
     Furthermore, the movable rod comprises a front movable rod and a rear movable rod, wherein the front movable rod is inserted into an inner hole of the sleeve tube, the rack is fixedly connected to the front movable rod, the rear movable rod is telescopically inserted into the front movable rod, and the front movable rod and the rear movable rod are fixedly connected through a lock bolt. 
     Furthermore, a limiting pin is fixedly connected to the rack, a long strip-shaped limiting through hole is formed in one side of the sleeve tube, and the limiting pin is matched with the limiting through hole to restrain the moving position of the movable rod. 
     The head protector is connected with the movable rod through the elastic rope, and the movable rod is fixedly connected with the foot hook frame, so that the head protector and the foot hook frame can move relatively. When a user puts on the head protector on the head and has both foot soles crooked on the foot hook frame, the user swings the manual swing rod, which in turn drives the gear to rotate through the active pawl, and afterwards, the gear drives the rack, the movable rod and the foot hook frame to stretch the whole body, and the oppressed cervical vertebra and lumbar vertebra of the body can be stretched and exercised at the same time so as to be relaxed. The body stretcher can also be used by patients, suffering from cervical spondylosis and lumbar spondylosis, for rehabilitation training. Moreover, through the two hand rest rods, the body stretcher can also be used for stretching and exercising the lumbar vertebra independently. 
    
    
     
       BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS 
         FIG. 1  is a top perspective view of the invention; 
         FIG. 2  is a bottom perspective view of the invention; 
         FIG. 3  is a bottom perspective view of a hidden sleeve tube of the invention; 
         FIG. 4  is an enlarged view of part A in  FIG. 3 ; 
         FIG. 5  is an exploded perspective view of the invention; and 
         FIG. 6  is a partial exploded perspective view of a movable rod, a rack, a sleeve tube and an elastic rope. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     The invention is further detailed below in combination with the accompanying drawings and specific embodiments. 
     As shown in  FIGS. 1-6 , a body stretcher comprises a floor-standing frame  1 . A horizontal plate  2  is fixedly connected to the upper surface of the floor-standing frame  1 . A sleeve tube  11  is arranged on the floor-standing frame  1  and is distributed in a length direction of the horizontal plate  2 . One end of the sleeve tube  11  is connected with a headrest  3 . The headrest  3  is provided with two pulleys  31  and is in an L shape. One end of the headrest  3  is inserted into an inner hole in one end of the sleeve tube  11  and is fixedly connected with the inner hole through a lock bolt  32 . The two pulleys  31  are respectively mounted at two ends of the headrest  3 . A plurality of positioning holes  33  are formed in the end, inserted into the sleeve tube  11 , of the headrest  3  at intervals. When the relative positions of the headrest  3  and the sleeve tube  11  are adjusted, the lock bolt  32  is matched with one of the plurality of positioning holes  33 . The relative positions of the headrest  3  and the sleeve tube  11  can be adjusted to adapt to users of different heights. 
     A movable rod  4  is inserted into the other end of the sleeve tube  11 . An end, away from the sleeve tube  11 , of the movable rod  4  is fixedly connected with a foot hook frame  5 . An end, inserted into the sleeve tube  11 , of the movable rod  4  is fixedly connected with a rack  40 . One end of the rack  40  is connected with one end of an elastic rope  6 . The other end of the elastic rope  6  winds across the two pulleys  31  to be connected with a head protector  7 . The end, inserted into the sleeve tube  11 , of the movable rod  4  can also be directly connected with the elastic rope  6 . 
     A support  12  is fixedly arranged on the outer side of the sleeve tube  11 . A receding through hole  13  is formed in a position, corresponding to the support  12 , of the outer side of the sleeve tube  11 . A gear  8  is arranged on the support  12  and is engaged with the rack  40  through the receding through hole  13 . One end of a manual swing rod  9  is hinged to the support  12 . An active pawl  91  is hinged to the manual swing rod  9  and is close to the gear  8 . One end of the active pawl  91  is matched with a toothed groove of the gear  8 . A check pawl  92  is hinged to the support  12 . A compression spring  93  is arranged between the check pawl  92  and the support  12 . The compression spring  93  drives one end of the check pawl  92  to be matched with the toothed groove of the gear  8 . The check pawl  92  prevents the gear from rotating reversely. Furthermore, one end of the manual swing rod  9  is fixedly connected with a U-shaped base  94 . A first connecting pin  95  and a second connecting pin  96  are mounted on the support  12 . The gear  8  and the U-shaped base  94  are pivoted on the first connecting pin  95 . The gear  8  is located in the middle of the U-shaped base  94 . The check pawl  92  is pivoted on the second connecting pin  96 . A third connecting pin  97  is mounted on the U-shaped base  94 . The active pawl  91  is pivoted on the third connecting pin  97  and is located in the middle of the U-shaped base  94 . The third connecting pin  97  is sleeved with a torsion spring  98 . One end of the torsion spring  98  leans against the U-shaped base  94 . The other end of the torsion spring  98  presses against the active pawl  91  to enable one end of the active pawl  91  to be matched with the toothed groove of the gear  8 . The first connecting pin  95 , the second connecting pin  96 , and the third connecting pin  97  are arranged in parallel. 
     The manual swing rod  9  can be swung to drive the gear  8  to rotate through the active pawl  91  and can also be pushed to drive the active pawl  91  and the check pawl  92  to be separated from the gear  8 , and thus, the gear  8  can rotate freely. 
     Two sides of the sleeve tube  11  are each provided with a hinge base  14  which is close to the headrest  3 . Each hinge base  14  is hinged to one end of a hand rest supporting rod  15 . The other end of each hand rest supporting rod  15  is fixedly connected with a hand rest rod  151  which is sleeved with a protective jacket  10 . The hand rest rods  151  are perpendicular to the hand rest supporting rods  15 . Furthermore, the length of the hand rest supporting rods  15  can be adjusted. When the body stretcher is in use, the hand rest supporting rods  15  are approximately horizontal, and the hand rest rods  151  lean against the side face of the horizontal plate  2  through the protective jackets  10 . 
     The foot hook frame  5  comprises a vertical rod  51  and two cross rods  52  fixedly connected to each of the two sides of the vertical rod  51 . Each cross rod  52  is sleeved with a protective jacket  10 . The lower portion of the vertical rod  51  is fixedly connected with one end of the movable rod  4 . Wheels  53  are respectively mounted on two sides of the lower end of the vertical rod  51 . 
     Furthermore, the vertical rod  51  comprises a lower vertical rod  511  and an upper vertical rod  512 , wherein the lower vertical rod  511  is fixedly connected with one end of the movable rod  4 , the upper vertical rod  512  is telescopically inserted into the lower vertical rod  511  and is fixedly connected with the lower vertical rod  511  through a lock bolt. Two sides of the lower vertical rod  511  are each fixedly connected with one cross rod  52 . Two sides of the upper vertical rod  512  are each fixedly connected with one cross rod  52 . 
     A foot support frame  20  is fixedly connected to the upper portion of a side, close to the foot hook frame  5 , of the floor-standing frame  1  and is provided with a plurality of horizontal support rods  201 . Two sides of each horizontal support rod  201  are each provided with one protective jacket  10 . The two protective jackets  10  on each horizontal support rod  201  are connected through a clamping piece  202 . 
     The movable rod  4  comprises a front movable rod  41  and a rear movable rod  42 . The front movable rod  41  is inserted into the inner hole of the sleeve tube  11 . The rack  40  is fixedly connected to the front movable rod  41 . The rear movable rod  42  is telescopically inserted into the front movable rod  41 . The front movable rod  41  and the rear movable rod  42  are fixedly connected through a lock bolt  43 . In this way, the length of the whole movable rod  4  can be adjusted to adapt to users of different heights. 
     Furthermore, as shown in  FIG. 6 , a limiting pin  401  is fixedly connected to the rack  40 . A long strip-shaped limiting through hole  111  is formed in one side of the sleeve tube  11 . The limiting pin  401  is matched with the limiting through hole  111  to restrain the moving position of the movable rod  4 . The front movable rod  41  of the movable rod  4  is fixedly connected with the rack  40 . The rack  40  and the front movable rod  41  are locked together through two screws  402 . The elastic rope  6  is connected with one end of the rack  40  through a connecting bolt  61 . 
     When the body stretcher in this embodiment is used, a user flatly lies on the horizontal plate  2  with the legs supported by the foot support frame  20 , the two foot soles crooked on the foot hook frame  5  and the left and right hands leaning against the two hand rest rods  151  which are provided with the protective jackets  10 , the two hand rest rods  151  lean towards the two sides of the horizontal plate  2 , the user puts the head protector  7  on the head, grabs the manual swing rod  9  with the right hand and then repeatedly swings the manual swing rod  9 , and then the manual swing rod  9  drives the gear  8  to clockwise rotate through the active pawl  91 ; afterwards, the gear  8  drives the rack  40 , the movable rod  4  and the foot hook frame  5  to move to stretch the body; and the oppressed cervical vertebra and lumbar vertebra of the body can be stretched and exercised at the same time so as to be relaxed, and the body stretcher has a good rehabilitation effect on particular groups. 
     When the stretching time is up, the manual swing rod  9  can be pushed anticlockwise to a great extent to separate the active pawl  91  and check pawl  92  from the gear  8 , then the gear  8  can rotate freely, and at this moment, the rack  40 , the movable rod  4  and the foot hook frame  5  return to original positions under the effect of an elastic force from the elastic rope  6 . The user can continue to stretch the body or take off the head protector  7  to stop exercising. 
     The user can also use the body stretcher in this embodiment to independently stretch and exercise the lumbar vertebra without wearing the head protector. 
     The above embodiment is only a preferred one of the invention. All equivalent variations made by those skilled in this field in terms of the claims should also fall within the protection scope of the invention.