Patent Publication Number: US-2016236018-A1

Title: Easy to Assemble Anti-dropping Device

Description:
NOTICE OF COPYRIGHT 
     A portion of the disclosure of this patent document contains material which is subject to copyright protection. The copyright owner has no objection to any reproduction by anyone of the patent disclosure, as it appears in the United States Patent and Trademark Office patent files or records, but otherwise reserves all copyright rights whatsoever. 
     BACKGROUND OF THE PRESENT INVENTION 
     1. Field of Invention 
     The present invention is an easy to assemble anti-dropping device, herein in particularly meaning a technique to improve the efficiency of assembling a central axle through a redesign of a supporting rack, which can certainly eliminate various troubles and disadvantages in assembling the central axle of the conventional central axle. 
     2. Description of Related Arts 
     According to the latest anti-dropping device, such as described in the published patent case, US2013/0105247, the assembling process in the published patent case requires aligning a rotary drum 150, a rotor 162, and a turbination spring 159 to put into a reverse U shaped chamber of a supporting rack 124, and using a central axle 184 to insert into an orifice 105 of the supporting rack 124 and to pass through the rotary drum 150 and a central hole of the rotor 162, so as to insert into another orifice 115 of the supporting rack 124. 
     However, in the published patent case it is hard and time consuming to install the central axle 184 because the central axle 184 has to be restricted by the orifice 105 of the supporting rack 124, and the rotary drum 150, the rotor 162, and the turbination spring 159 have to be restricted in the reverse U shaped chamber, so it is impossible to see the central hole of the rotary drum 150 and the rotor 162 and, therefore, there is a need to frequently align through moving the central axle 184 back and forth to adjust the positions of the rotary drum 150 and the rotor 162, which not only increases the working time for more times of the action to hinder the efficiency of the assembling, but also hinders the growth of the economic effectiveness, which is the bottleneck of current technology. 
     SUMMARY OF THE PRESENT INVENTION 
     The present invention provides an easy to assemble anti-dropping device, which is characterized in that the supporting rack is formed from a upright board having a first hole, a lateral board extended from top side of the upright board, and a breaking frame detachably installed on the free end of the lateral board to define a chamber, wherein the breaking frame has a foramen concentric with the first hole, a covering board sealing off the outer side of the foramen, wherein the covering board has a second hole which matches with the first hole, so as to allow the first hole and the second hole to be passed through by a central axle. 
     Therefore, the first hole of the upright board or the second hole of the breaking frame of the present invention can first separate to allow the central axle to pass, so as to let the central axle to pass through the central opening of the rotor and the central hole of the rotary drum in a manner of maximum moving allowance, and to eventually set up the breaking frame on the lateral board, which structural setting can certainly greatly reduce the assembly costs and improve on the disadvantages of assembling a current anti-dropping device. 
     Still further objects and advantages will become apparent from a consideration of the ensuing description and drawings. 
     These and other objectives, features, and advantages of the present invention will become apparent from the following detailed description, the accompanying drawings, and the appended claims. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is an exploded view of the present invention. 
         FIGS. 2 and 3  are external views of partial assemblages of  FIG. 1 . 
         FIG. 4  is a 3D schematic diagram of an assemblage of the present invention. 
         FIG. 5  is a schematic diagram of left side of an assemblage of the present invention. 
         FIG. 6  is a schematic diagram of the present invention showing whether the bias rotary member has buckled into the foramen. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     The following description is disclosed to enable any person skilled in the art to make and use the present invention. Preferred embodiments are provided in the following description only as examples and modifications will be apparent to those skilled in the art. The general principles defined in the following description would be applied to other embodiments, alternatives, modifications, equivalents, and applications without departing from the spirit and scope of the present invention. 
     Referring to  FIGS. 1-6 , the present invention comprises: 
     an internally hollow shell body  10  formed by coupling a first shell  11  and a second shell  12 , wherein the top of the shell body  10  has an upper hole  13  connecting inside out and the bottom of the shell body  10  has a lower hole (not shown on the figures) connecting inside out; 
     a supporting rack  20  installed inside of the shell body  10 , wherein the supporting rack  20  is formed from an upright board  21  having a first hole  211 , a lateral board  22  extended from top side of the upright board  21 , and a breaking frame  23  detachably installed on the free end of the lateral board  22 , so as to have the upright board  21 , the lateral board  22 , and the breaking frame  23  define a chamber  24 , wherein a first binding hole  221  and a first screw hole  231  are correspondingly set where the lateral board  22  and the breaking frame  23  attach to one another, so as to detachably install the breaking frame  23  on the free end of the lateral board  22 , wherein the breaking frame  23  further has a laterally penetrated foramen  232  concentric with the first hole  211  and a covering board  233  sealing off the outer side of the foramen  232 , wherein the foramen  232  at least has a radially hollowed positioning unit  234 , wherein a second binding hole  235  and a second screw hole  236  are correspondingly set where the covering board  233  and the breaking frame  23  attach to one another, so as to allow the second screw  252  to affix the covering board  233  with the breaking frame  23  to detachably seal the covering board  233  on the foramen, wherein the covering board  233  also has a second hole  237  passing through which matches with the first hole  211 , wherein the center of the lateral board  22  further has a coupling hole  222  passing through for installation of a hanging set which is formed from a turning holder  26 , a washer  27 , and a lifting lug  28 , wherein the turning holder  26  has a base portion  261  stopped on the bottom of the lateral board  22  and has an axle portion  262  which is extended up from the bottom and passes through the washer  27 , the coupling hole  222 , and the upper hole  13 , wherein the axle portion  262  also concavedly has a radially penetrated cutting slot  263  which is to be inserted by the base portion of the lifting lug  28 , wherein the axle portion  262  and the lifting lug  28  have a corresponding first pivot hole  264  and a corresponding second pivot hole  281  to let an axle element  265  to couple the first pivot hole  264  with the second pivot hole  281 , wherein the top portion of the lifting lug  28  has a fixing hole  282  to provide hangingly securing, so the supporting rack  20  of the present invention can use the axle portion  262  and the axle element  265  as pivot to perform positioning adjustment with universal angle, which can flexibly respond to the user&#39;s movement; 
     a rotary drum  30  accommodated in the chamber  24 , wherein the rotary drum  30  comprises a central hole  31  which passes through both the left and right sides of the rotary drum  30 , and four eccentric holes  32  which are for a third screw  253  to passingly catch to lockingly affix a first side board  33  which radially protrudes on a side of the rotary drum  30 , wherein the first side board  33  further symmetrically has at least one first spring base  331  inserting in the foramen  232 , wherein another side of the rotary drum  30  has an integral radially protruded second side board  34 , so as to form a limited space for the rescue cord  40  to circle within between the first side board  33  and the second side board  34 , wherein a free end of the rescue cord  40  can pass through a lower hole of the shell body  10  to connect to a buffering structure  41  on which bottom side was set a hook  42  to hookingly connect to a safety belt of the user; 
     a rotor  50  accommodated in the foramen  232 , wherein the rotor  50  comprises a central opening  51  which passes through both the left and right sides of the rotor  50 , four eccentric screw holes  52 , and at least an eccentric through hole  53 , wherein the eccentric screw holes  52  are for the third screws  253  to lockingly affix with, so as to lockingly affix both the rotor  50  and the first side board  33  on a side of the rotary drum  30 , wherein the rotor  50  further has a solid trough  54  radially connecting inside and outside of the eccentric throughhole  53 , and a blocking arm  55  protruded from a side of the trough solid  54 ; 
     at least a bias rotary member formed from an eccentric block  61  and a reset spring  62 , wherein the eccentric block  61  has a pivot portion  611  couplingly positioned at the eccentric through hole  53 , a curving handle  612  protruded from the trough solid  54 , and a detent portion  613  set on a free end of the curving handle  612 , wherein an outer end of the inside of the detent portion  613  has a second spring base  614  which allows the reset spring  62  to connect between the second spring base  614  and the first spring base  331 , so as to provide the eccentric block  61  a potential to withdraw for positioning at any time, which allows the curving handle  612  to move away from the blocking arm  55  and let the inside of the detent portion  613  appressing on the peripheral of the rotor  50 ; 
     a turbination spring  70  accommodated in said chamber  24 , wherein the outer end  71  of the turbination spring  70  is affixed on the supporting rack  20  and the inner end  72  of the turbination spring  70  is affixed on another side of the rotary drum  30 , so as to provide said rotary drum  30  a predetermined acting force to give the rotary drum  30  the potential to roll said rescue cord  40  back at any time; and 
     a central axle  80  passing through the first hole  211 , the turbination spring  70 , the central hole  31  of the rotary drum  30 , the central opening  51  of the rotor  50 , and the crossing chamber  24  of the second hole  237 , so that when the user is walking aerially or falling, the rotary drum  30  and the rotor  50  are allowed to roll by the central axle  80  in dealing with the instant stretching of the rescue cord  40  and to put a centrifugal force on the bias rotary member to let the eccentric block  61  overpower the reset spring  62  to leaningly move outward with the pivots of the pivot portion  611  and the eccentric through hole  53 , so as to let the curving handle  612  to lean against the blocking arm  55  and to have the detent portion  613  to buckle in the positioning unit  234 , so that the rotary drum  30  and the rotor  50  are fixated by the breaking frame  23  of the supporting rack  20  and unable to turn, which achieves the effect of safety and anti-dropping. 
     Therefore, the supporting rack  20  of the present invention is able to separate the breaking frame  23  in advance, so as to let the central axle  80  to pass through the turbination spring  70 , the central hole  31  of the rotary drum  30 , the central opening  51  of the rotor  50 , and the second hole  237  of the breaking frame  23  in a manner of maximum moving allowance after the central axle  80  has passingly caught the first hole  211  of the upright board  21 . Then the breaking frame  23  is set on the lateral board  22 . Similarly, the supporting rack  23  of the present invention can also, as the breaking frame  23  was taken off in advance, let the central axle  80  pass through the central opening  51  of the rotor  50 , the central hole  31  of the rotary drum  30 , the turbination spring  70 , and the first hole  211  of the upright board  21  in a manner of maximum moving allowance after the central axle  80  has passingly caught the second hole  237  of the breaking frame  23 . Then, the breaking frame  23  is set on the lateral board  22 . 
     According to the above description, it is known that the present invention at least has the following advantages: 
     First, in the present invention the assembling of the central axle  80  does not have to be restricted by the supporting rack  20 , and the rotor  50  and the rotary drum  30  also do not have to be limited in a reverse U shaped chamber as the previous mentioned published application described, so the sight for assembly of the present invention is good to let the central axle  80  to directly easily pass through the central opening  51  of the rotor  50  and the central hole  31  of the rotary drum  30 . Therefore the present invention can effectively lower the disadvantage of the frequent alignments and adjustments of the previous mentioned published application, so as to allow an evolutionarily great creation and provide economic efficiency. 
     Second, the present invention can control the turning tightness of the central axle  80  through the locking tension of the first screw  251  only, which structural setting is certainly unprecedented. 
     Third, the present invention allows a three fold increase in the chance for the detent portion  613  to buckle in the positioning unit  234  than that of the previous mentioned published application by setting three symmetrical positioning units  234  of the foramen and two bias rotary members, so the present invention has a non-obviousness element of high sensitivity. 
     One skilled in the art will understand that the embodiment of the present invention as shown in the drawings and described above is exemplary only and not intended to be limiting. 
     It will thus be seen that the objects of the present invention have been fully and effectively accomplished. The embodiments have been shown and described for the purposes of illustrating the functional and structural principles of the present invention and is subject to change without departure from such principles. Therefore, this invention includes all modifications encompassed within the spirit and scope of the following claims.