Abstract:
The present invention relates to a punching elasticity adjustment structure which comprises one punching bag connecting set, one elastic bladder, one air valve, one base, and one elastomer. The said elastic bladder is inflated via said air valve to increase the inner pressure so the said elastic bladder expands vertically with rised height, resulting in bigger gap between said punching hag connecting set and said base and simultaneously elongates said elastomer and changes its elasticity. Elasticity therefore can be adjusted to meet the demand of diversified training effects.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a punching elasticity adjustment structure; particularly one that using elastomer driven by degree of air bladder inflation to adjust punching training devices. 
     2. Description of Prior Arts 
     Principle of conventional martial training device is: one punching bag (such as speed bag or filler bag), when punched by external force, will swing back and forth or absorb the impact utilizing elasticity of elastomer connecting to said punching bag. 
     Elastic coefficients of elastomer of most said martial training devices are fixed so elastic strength and flexibility cannot be adjusted upon different needs, resulting in insufficient combat training. There are a small number of existing training devices which are elasticity-adjustable. However, they are either done by rigid structures adjusted by stretching spiral sleeves or screws, which may result in dangers when there is breakage due to excess impact or users may be injured by direct hit on the structure; or it may be done by mere air inflation of elastic bladder, resulting in insufficient elasticity to meet demanded strength for training. 
     Thus, there are foregoing drawbacks of conventional elastic structure of punching training device in prior art to be improved. 
     SUMMARY OF THE INVENTION 
     To improve drawbacks of prior invention, the present invention provides a punching elasticity adjustment structure that allows elasticity of training device to be adjusted according to different needs, meets specific requirements of combat exercise, and whose overall structure with sufficient strength to withstand impact and resolve rotation torque. 
     The present invention discloses a punching elasticity adjustment structure which comprises one elasticity adjustment set; wherein the said elasticity adjustment set further comprises one punching bag connecting set, one elastic bladder, one air valve, one base, and one elastomer. 
     There is one through-hole in the middle of said punching bag connecting set, and the said connecting set further comprises one cylinder first junction. One end of said first junction is inserted through said through-hole and stops at bottom of said punching bag connecting set, and the other end connects to junction section of one punching bag. Said elastic bladder is one vertically extendable bladder structure with its top connecting to bottom part of said punching bag connecting set. Said air valve connects to interior of said elastic bladder to inflate or deflate said elastic bladder in order to change height of said elastic bladder. The top of said base connects to bottom of said elastic bladder; and said base has a junction section on the lower part to fix to top of one base seat. Said elastomer is elastically adjustable, placed on the side of said elastic bladder and retained between said punching bag connecting set and said base. Elasticity of said elastomer is adjusted by changing height of said elastic bladder. Said elastomer is one elastic pillar or multiple elastic tapes. 
     When said elastomer is one elastic pillar, said elastic pillar is inserted through the hollow tube in the center of said elastic bladder. Said elastic pillar further comprises one second junction, one first rod, one second rod, and one elastic section; said second junction is a cylinder with one end inserted through and retains on bottom of said base; said first rod is a cylinder with one end connecting to one end of said first junction; said second rod is a cylinder with one end connecting to the other end of said second junction; said elastic section is elastomer with one end fixed to the other end of first rod and the other end fixed to the other end of said second rod. 
     Said elastic pillar further comprises one first fixation set and one second fixation set; one end of said first fixation set is fixed to one end of said elastic section and the other end connects to the other end of said first rod; one end of said second fixation set is fixed to the other end of said elastic section and the other end connects to the other end of said second rod. 
     When said elastomer is elastic tapes, lower part of said elastic tape can be fixed to said base; or when said elastomer is elastic tapes, said elasticity adjustment set further comprises one lodge cover, multiple fixing holes in base, and multiple fixers; said lodge cover covers bottom of said base and has multiple fixed through-holes to the bottom of said lodge cover; fixing holes in said base are located on bottom of said base and correspond to positions of fixed through-holes of said lodge cover; said fixers fix through-holes of said lodge cover to fixing holes in said base. Top of said elastic tapes cover or is fixed to top of said punching bag connecting set, or top of said elastic tapes integrated with said punching bag connecting set; with the case said elastic tape integrated with said punching hag connecting set, only elastic tapes on the sides have elasticity. Bottom of said elastic tapes is inserted and installed between said lodge cover and said base. Said elastic tapes further comprise one through-hole and multiple anchors; said through-hole is located on central top of said elastic tapes and inserted through by the other end of said first junction. Said anchors locate on bottom of said elastic tapes and are wedged between said lodge cover and said base. 
     Preferably, there is restriction parts on the side of said elastic bladder and said restriction parts are multiple steel wires or shaping ring structure, or inelastic or vertically extendable fabric structure; said steel wire or shaping ring structure are used to limit width of said elastic bladder and said fabric structure may be materials such as glass fiber fabric or synthetic leather; lengths of said first rod and second rod can be different and interchangeable to place said elastomer upward or downward to produce different swing range of said punching hag. 
     Other than foregoing composition and effects of punching elasticity adjustment structure of present invention, said punching bag connecting set further comprises multiple breaches and one first junction. Said breaches locate on bottom end on the side of said punching bag connecting set; said first junction locates on top side of said punching bag connecting set and integrates with junction section of one punching bag. Said elastomer is the multiple elastic tapes located on external side of said elastic bladder with one end insert into breach of said punching bag connecting set and retained on bottom of said punching bag connecting set. Said elasticity adjustment set further comprises multiple block sets which installed on breaches of said punching bag connecting set. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWING 
         FIG. 1  is a three-dimensional view of embodiment A of present invention. 
         FIG. 2  is a three-dimensional view of embodiment B of present invention. 
         FIG. 3  is a sectional view of embodiment B of present invention. 
         FIG. 4  is a sectional view of embodiment A of present invention. 
         FIG. 5  is another sectional view of embodiment A of present invention. 
         FIG. 6  is another sectional view of embodiment A of present invention. 
         FIG. 7  is another sectional view of embodiment A of present invention. 
         FIG. 8  is a three-dimensional exploded view of embodiment B of present invention. 
         FIG. 9  is another three-dimensional exploded view of embodiment B of present invention. 
         FIG. 10  is a three-dimensional exploded view of embodiment A of present invention. 
         FIG. 11  is another sectional view of embodiment B of present invention. 
         FIG. 12  is another three-dimensional exploded view of embodiment B of present invention. 
         FIG. 13  is a three-dimensional exploded view of one punching bag connecting set and elastic tape of embodiment B of present invention. 
         FIG. 14  is another three-dimensional exploded view of embodiment B of present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Please refer to  FIGS. 1 and 2  for three-dimensional views of different embodiments of punching elasticity adjustment structure of present invention. Please refer to  FIGS. 3 ,  4 ,  5 ,  6 ,  7 , and  11  for sectional views of different embodiments of punching elasticity adjustment structure of present invention. Please refer to  FIGS. 8 ,  9 ,  10 ,  12 ,  13  and  14  for three-dimensional exploded views of different embodiments of punching elasticity adjustment structure of present invention. Wherein said punching elasticity adjustment structure comprises one elasticity adjustment set  10 ; the top of said elasticity adjustment set  10  is fixed to bottom part of one punching bag  20  and the bottom of said elasticity adjustment set  10  is fixed to top of one base seat  30 , as shown in  FIGS. 1 and 2 . 
     As shown in  FIGS. 8 ,  9 ,  10 , and  12 , said elasticity adjustment set  10  comprises one punching bag connecting set  11 , one elastic bladder  13 , one air valve  16 , one base  14 , and one elastomer  12 . 
     Wherein the said punching bag connecting set  11  has one through-hole  111  in the center, and comprises one cylinder first junction  112 ; said elastic bladder  13  is vertically extendable bladder structure; said base  14  has one junction section  141  in the lower part; said elastomer  12  is one elastic pillar  121  with elasticity or multiple elastic tapes  122 . Said elastic pillar  121  locates in the center of elastic bladder  13  and said elastic tapes  122  locate on external side of said elastic bladder  13 . 
     As shown in  FIGS. 4 ,  5 , and  6 , there are multiple restriction parts  131  on the sides of said elastic bladder  13 , said restriction parts  131  are multiple steel wires or shaping ring structure. Said elastomer is elastic pillar  121  which further comprises one second junction  1215 , one first rod  1211 , one second rod  1212 , and one elastic section  1213 . Said second junction  1215 , first rod  1211  and second rod  1212  are cylinders and said elastic section  1213  is elastomer. 
     Said air valve  16  connects to interior of said elastic bladder  13 ; the top of said elastic bladder  13  connects right under said punching bag connecting set  11 ; the top of said base  14  connects to bottom of said elastic bladder  13 ; said elastic pillar  121  is retained between said punching bag connecting set  11  and said base  14 . 
     Firstly, one end of said elastic section  1213  is fixed to one end of said first rod  1211 , and the other end is fixed to one end of said second rod  1212 ; said elastic pillar  121  is inserted through the hollow tube in the center of said elastic bladder  13 . 
     Next, one end of said first junction  112  is inserted through through-hole  111  of said punching bag connecting set  11 , and connects to the other end of said first rod  1211 . The other end of said first junction  112  connects to junction section  211  of center pole  21  of punching bag  20 . 
     Then, one end of said second junction  1215  in inserted through and retains at bottom of said base  14  while the other end connects to the other end of said second rod  1212 ; junction section  141  of said base  14  connects to the top of one base seat  30 . 
     Finally, inflate said elastic bladder  13  via said air valve  16  to increase internal pressure of said elastic bladder  13 . Said elastic bladder  13  only expands vertically due to existence of said restriction parts  131  which limit elastic bladder  13  for horizontal expansion. Thus, height of said elastic bladder  13  rises and enlarges the gap between said punching bag connecting set  11  and said base  14 ; elastic section  1213  of said elastic pillar  121  is simultaneously elongated to change elasticity of said elastomer  12 . 
     Structure shown in  FIG. 7  is similar to that of  FIG. 6 , but said elastic pillar  121  further comprises one first fixation set  1216  and one second fixation set  1217 ; one end of said first fixation set  1216  is fixed to external side of one end of said elastic section  1213 , making one end of said elastic section  1213  fixed to one end of said first rod  1211 ; one end of said second fixation set  1217  is fixed to external side of the other end of said elastic section  1213 , making the other end of said elastic section  1213  fixed to one end of said second rod  1212 . 
     As shown in  FIG. 3 , said elastic bladder  13  has a restriction part  131  of either vertically extendable or inelastic fabric structure, on the side; said elastomer  12  is made of multiple elastic tapes  122 ; and said elasticity adjustment set  10  further comprises one lodge cover  15 , multiple fixing holes  142  in base  14 , and multiple fixers  50 . There are multiple fixed through-holes  151  on the lower part of said lodge cover  15 . Fixing holes  142  are located on lower part of said base  14  and correspond to positions of fixed through-holes  151  of lodge cover  15 . Said elastic tapes  122  further comprises one through-hole  1222  and multiple junction sections  1221 ; said through-hole  1222  is located on the central top of said elastic tapes  122  while said anchors  1221  located on lower part of said elastic tapes  122 . 
     Said air valve  16  connects to interior of said elastic bladder  13 ; the top of said elastic bladder  13  connects right under said punching bag connecting set  11 ; the top of said base  14  connects to bottom of said elastic bladder  13 ; said elastic tapes  122  retains between said punching bag connecting set  11  and said base  14  and said fixed through-holes  151  penetrate bottom of said lodge cover  15 . 
     Firstly, top of said elastic tapes  122  covers on top of said punching bag connecting set  11 ; one end of said first junction  112  is inserted through through-hole  1222  of said elastic tape  12  and through-hole  111  of said punching bag connecting set  11  and then retains at bottom of said punching bag connecting set  11 . The other end of said first junction  112  connects to junction section  211  of center pole  21  of one punching bag  20 . 
     Then, place anchors  1221  of said elastic tapes  122  on the external side of said base  14  and place lodge cover  15  on bottom of said base  14 , making said anchors  1221  wedged between said lodge cover  15  and said base  14 , and then fix through-holes  151  of said lodge cover  15  and fixing holes  142  in said base  14  with said fixer  50 . Junction section  141  of said base  14  connects to the top of one base seat  30 . 
     Finally, inflate said elastic bladder  13  via said air valve  16  to increase internal pressure of said elastic bladder  13 . Said elastic bladder  13  only expands vertically due to existence of said restriction parts  131  which limit elastic bladder  13  for horizontal expansion. Thus, height of said elastic bladder  13  rises and enlarges the gap between said punching bag connecting set  11  and said base  14 ; elastic tapes  122  are simultaneously elongated to change elasticity of said elastomer  12 . 
     Said elasticity adjustment set  10  comprises one punching bag connecting set  11 , one elastic bladder  13 , one air valve  16 , one base  14 , and one elastomer  12 , as shown in  FIGS. 13 and 14 . 
     The said punching bag connecting set  11  further comprises multiple breaches  113  and one first junction  112 . The said breaches  113  locate on the bottom part on the sides and said first junction  112  locates on top part of said punching bag connecting set  11 ; said elastic bladder  13  is vertical extendable bladder structure; said base  14  has one junction section  141  in the lower part; said elastomer  12  is multiple elastic tapes  122  with elasticity, locates on external side of said elastic bladder  13 . Said elasticity adjustment set  10  comprises multiple block sets  40  which further comprises one first block  41  and one second block  42 . 
     As shown in  FIG. 11 , said elastic bladder  13  has multiple restriction parts  131  of either vertically extendable or inelastic fabric structure, on the side; said elastomer  12  is made of multiple elastic tapes  122 ; and said elasticity adjustment set  10  further comprises one lodge cover  15 , multiple fixing holes  142  in base  14 , and multiple fixers  50 . There are multiple fixed through-holes  151  on the lower part of said lodge cover  15 . Fixing holes  142  are located on lower part of said base  14  and correspond to positions of fixed through-holes  151  of lodge cover  15 . Said elastic tape  122  further comprises multiple anchors  1221 , located on lower part of said elastic tapes  122 . 
     Said air valve  16  connects to interior of said elastic bladder  13 ; the top of said base  14  connects to bottom of said elastic bladder  13 ; and said fixed through-holes  151  penetrate bottom of said lodge cover  15 . 
     First, insert one end of said elastic tape  122  into breach  113  of said punching bag connecting set  11  and retains on lower part of said punching bag connecting set  11 . The first block  41  of said block set  40  is installed on breach  113  of said punching bag connecting set  11 , then join with second block  42  located under bottom of said punching bag connecting set  11 . The first junction  112  of said punching bag connecting set  11  connects to junction section  211  of center pole  21  of one punching bag  20 . The top of said elastic bladder  13  connects right under said punching bag connecting set  11 . 
     Then, place anchors  1221  of said elastic tapes  122  on the external side of said base  14  and place lodge cover  15  on bottom of said base  14 , making said anchors  1221  wedged between said lodge cover  15  and said base  14 , and then fix through-holes  151  of said lodge cover  15  and fixing holes  142  in said base  14  with said fixer  50 . Junction section  141  of said base  14  connects to the top of one base seat  30 . Said elastic tapes  122  retains between said punching bag connecting set  11  and said base  14 . 
     Finally, inflate said elastic bladder  13  via said air valve  16  to increase internal pressure of said elastic bladder  13 . Said elastic bladder  13  only expands vertically due to existence of said restriction parts  131  which limit elastic bladder  13  for horizontal expansion. Thus, height of said elastic bladder  13  rises and enlarges the gap between said punching bag connecting set  11  and said base  14 ; elastic tapes  122  are simultaneously elongated to change elasticity of said elastomer  12 . 
     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 scope of the invention as hereinafter claimed.