Abstract:
An expandable pull rod frame of the luggage includes a first arresting member and a second arresting member, which are adapted to a two-segmented, three-segmented, or four-segmented pull rod frame. The arresting members are provided with the locating bodies, the guide edges, and the inclined holes for guiding the locating bodies, thereby resulting in a precision adjustment in length of the expandable pull rod.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates generally to an expandable pull rod of the luggage, and more particularly to the arresting members of the expandable pull rod of the luggage. 
     2. Description of Related Art 
     The conventional luggage is generally provided with an expandable pull rod to facilitate the moving of the luggage on the surface by a traveler. However, the expandable pull rod of the conventional luggage is defective in design because it is not provided with means to enable the expandable pull rod to be adjusted in length with precision. In other words, the conventional luggage expandable pull rod cannot be securely located after it has been adjusted in length. 
     Taiwanese Patent Serial Number 90201421 also discloses arresting members of an expandable pull rod. This disclosure comprises a first arresting member, and a second arresting member which is rather complicated in construction and is therefore not cost-effective. In addition, the second arresting member is excessively long such that the overall length of the pull rod frame must be increased accordingly. 
     BRIEF SUMMARY OF THE INVENTION 
     It is the primary objective of the present invention to provide a luggage with an expandable pull rod which can be accurately adjusted in length. 
     It is another objective of the present invention to provide a luggage with a pull rod frame comprising a first arresting member, and a second arresting member which is simple in construction and can be economically made. 
     The foregoing objectives, features and functions of the present invention will be readily understood upon a thoughtful deliberation of the following detailed description of the present invention in reference to the accompanying drawings. 
    
    
     BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS 
     FIG. 1 shows a perspective view of the first arresting member of the present invention. 
     FIG. 2 shows an exploded view of the first arresting member of the present invention. 
     FIG. 3 shows a longitudinal sectional view of the first arresting member of the present invention. 
     FIG. 4 shows a longitudinal sectional view of the first arresting member of the present invention in action. 
     FIG. 5 shows a perspective view of the second arresting member of the present invention. 
     FIG. 6 shows an exploded view of the second arresting member of the present invention. 
     FIG. 7 shows a longitudinal sectional view of the second arresting member of the present invention in combination. 
     FIG. 8 shows a longitudinal sectional view of the second arresting member of the present invention at work. 
     FIG. 9 shows a longitudinal sectional view of the first arresting member of the present invention in conjunction with a two-segmented pull rod frame. 
     FIG. 10 shows a longitudinal sectional view of the first arresting member and the second arresting member of the present invention in conjunction with a three-segmented pull rod frame. 
     FIG. 11 shows a longitudinal sectional view of the present invention in the retraction state. 
     FIG. 12 shows another longitudinal sectional view of the present invention in the retraction state. 
     FIG. 13 shows a longitudinal sectional view of the present invention in the extraction state in conjunction with a four-segmented pull rod frame. 
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     As shown in FIGS. 1-8, the present invention comprises a first arresting member  10  and a second arresting member  40 , which are disposed in the interior of a tubular body of a pull rod frame of the luggage. 
     The first arresting member  10  comprises a housing seat  11 , a spring  12 , an action member  13 , a locating body  14 , and a locating cover  15 . 
     The housing seat  11  is provided in an upper end  111  with an inner diametrical hole  112 , and in the interior with a receiving slot  113  in communication with the inner diametrical hole  112 . The housing seat  11  is further provided at a bottom end with an opening  114 . The housing seat  11  has an open longitudinal side and a closed longitudinal side  115  opposite to the open longitudinal side, as shown in FIG.  2 . The closed longitudinal side  115  is provided with two retaining holes  116  and an insertion hole  117  located between the two retaining holes  116 . 
     The spring  12  is disposed in the top portion of the receiving slot  113  of the housing seat  11 . 
     The action member  13  is formed of a rod body  131  and a box body  135  greater in diameter than the rod body  131 . The rod body  131  is provided with an inverted hook  132 , a retaining slot  133 , and a through hole  134 . The box body  135  is dimensioned to fit into the receiving slot  113  of the housing seat  11  and is smaller in height than the receiving slot  113 . The box body  135  is provided with two inclined holes  136  opposite in location to each other, and two open sides  137  opposite in location to each other. The action member  13  is joined with the housing seat  11  such that the rod body  131  is fitted into the spring  12  located at the top of the receiving slot  113 , such that the inverted hook  132  and the retaining slot  133  of the rod body  131  are jut out of the upper end  111  of the housing seat  11  via the inner diametrical hole  112  of the upper end  111  of the housing seat  11 , and such that the upper edge of the box body  135  of the action member  13  comes in contact with the bottom end of the spring  12 . 
     The locating body  14  is provided at one end with two protrusions  141  and is disposed in the box body  135  of the action member  13  such that the two protrusions  141  of the locating body  14  are inserted into the two inclined holes  136  of the box body  135  of the action member  13 . 
     The locating cover  15  is of an L-shaped construction and is formed of an upright portion  151  and a horizontal portion  156 . The upright portion  151  is provided with one retaining piece  152 , an insertion piece  153  separated from the retaining piece  152  by a space  154 . The upright portion  151  is further provided with a through hole  155  in alignment with the space  154 . The locating cover  15  is joined with the housing seat  11  such that the retaining piece  152  of the upright portion  151  of the locating cover  15  is retained in one of the two retaining holes  116  of the housing seat  11 , and that the insertion piece  153  of the upright portion  151  of the locating cover  15  is inserted into the insertion hole  117  of the housing seat  11 , and further that the horizontal portion  156  of the locating cover  15  is retained in other one (lower one) of the two retaining holes  116  of the housing seat  11 , and further that the horizontal portion  156  of the locating cover  15  seals off the opening  114  of the bottom end of the housing seat  11 , and further that the locating body  14  is confined in the space  154  which is located between the retaining piece  152  and the insertion piece  153  of the upright portion  151  of the locating cover  15 . As the action member  13  is forced by the spring force of the spring  12  to move downward, the locating body  14  is guided by the inclined holes  136  of the box body  135  of the action member  13  to extend out of the locating cover  15  via the through hole  155  of the upright portion  151  of the locating cover  15 . 
     The second arresting member  40  of the present invention comprises a housing  41 , a control member  45 , a first locating body  48 , a second locating body  49 , and a locating plate  52 . 
     The housing  41  has an open top  411 , a chamber  412  in communication with the open top  411 , a closed bottom  414 , a closed side  413 , and an open side  415  opposite to the closed side  413 . The chamber  412  is provided with a horizontal block  417 , a partition  416  located under the horizontal block  417 , a lower cell  418  located between the partition  416  and the closed bottom  414 , and an upper cell  419  located between the partition  416  and the horizontal block  417 . The horizontal block  417  is provided with an upper through hole  420  and a lower through hole  421 , which are extended along the longitudinal direction of the horizontal block  417 . The horizontal block  417  is provided at one end of the bottom thereof with a horizontal insertion piece  422  extending toward the open side  415  of the housing  41 . The bottom edge of the open side  415  of the housing  41  is provided with an inverted hook  423  extending horizontally therefrom. The closed side  413  of the housing  41  is provided with a through hole  424  in communication with the upper cell  419 . 
     The control member  45  has a hollow interior, two openings  451  and  452  opposite to each other, and two face plates  453  opposite to each other. The first face plate  453  is provided with a first guide slot  454 , whereas the second face plate  453  is provided with a second guide slot  455 . The diagonal side of the guide slots  454  and  455  form an upper guide edge  456  and a lower guide edge  457  parallel to the upper guide edge  456 . The control member  45  is provided in the underside of the bottom with a projection  458  extending therefrom. The projection  458  is provided with an upright spring  46  fitted thereover. The control member  45  is disposed in the chamber  412  of the housing  41  such that the upright spring  46  is located in the lower cell  418  of the chamber  412  of the housing  41 , and that the control member  45  is urged by the spring  46 , thereby causing the top of the control member  45  to extend out of the open top  411  of the housing  41 . As a result, the control member  45  is capable of moving up and down. The guide slots  454  and  455  of the control member  45  are located in the upper cell  419  of the housing  41 . 
     The first locating body  48  and the second locating body  49  are respectively provided at one end thereof with a block body  481 ,  491 . The second locating body  49  is disposed in the upper cell  419  of the housing  41  such that the block body  491  of the second locating body  49  is juts out of the housing  41  via the through hole  423  of the closed side  413  of the housing  41 . The block body  491  of the second locating body  49  is provided with one inclined plane  493  in contact with the upper guide edge  456  of the control member  45 . In the meantime, the block body  491  of the second locating body  49  urges one end of a horizontal spring  50 . The block body  481  of the first locating body  48  is disposed in the upper cell  419  of the housing  41  such that the block body  481  of the first locating body  48  comes in contact with other end of the horizontal spring  50 , and that an inclined plane  482  of the block body  481  of the first locating body  48  is in contact with the lower guide edge  457  of the control member  45 . 
     The locating plate  52  is provided with an upper insertion hole  521  opposite to the horizontal insertion piece  422  of the housing  41 , a middle through hole  522  opposite to the first locating body  48 , and a lower retaining hole  523  opposite to the inverted hook  423  of the housing  41 . The locating plate  52  is provided in the top with an inverted hook  524 . The open side  415  of the housing  41  is sealed off by the locating plate  52  such that the inverted hook  524  of the locating plate  52  juts out of the housing  41  via the lower through hole  421  of the horizontal block  417  of the housing  41 , and that the horizontal insertion piece  422  of the housing  41  is inserted into the upper insertion hole  521  of the locating plate  52 , and further that the locating body end  483  of the first locating body  48  is inserted into the middle through hole  522  of the locating plate  52 , and still further that the inverted hook  423  of the housing  41  is inserted into the lower retaining hole  523  of the locating plate  52 . The locating body end  483  of the first locating body  48  is extended out via the middle through hole  522  of the locating plate  52 . 
     As shown in FIGS. 2,  3 ,  4 , and  9 , the first arresting member  10  of the present invention is used in conjunction with a two-segmented pull rod frame  1 . The upper end  111  of the housing seat  11  is inserted into the bottom end of the upper tube  101 . A steel cable  103  is controlled by a handle switch and is provided at the bottom end with an enlarged body  104 , which is retained in the retaining slot  133  of the rod body  131  of the action member  13 . The first arresting member  10  is located at the bottom end of the upper tube  101  by a bolt  105  which is fastened through the horizontal hole  118  of the upper end  111  and the through hole  134  of the rod body  131  of the action member  13 . The first arresting member  10  is extended into the lower tube  106 . The lower tube  106  is provided with a plurality of locating holes  107 ,  108  for controlling the handle switch so as to enable the steel cable  103  to be pulled upward, thereby actuating the action member  13  to move up to compress the spring  12 . In the meantime, the protrusions  141  of the locating body  14  are guided by the inclined holes  136  of the action member  13  to enable the locating body  14  to enter the housing seat  11 . As a result, the pull rod frame  1  can be adjusted up and down. 
     As shown in FIGS. 3,  4 ,  6 ,  7 ,  8 ,  10 ,  11 , and  12 , the first arresting member  10  and the second arresting member  40  of the present invention are employed in conjunction with a three-segmented pull rod frame  2 . The top  411  of the second arresting member  40  is put through the bottom end of the middle tube  201 . The second arresting member  40  is located at the bottom end of the middle tube  201  by a bolt  202  which is fastened through the upper through hole  420  of the horizontal block  417  of the second arresting member  40 . The second arresting member  40  is extended into the lower tube  204 . In the meantime, the first arresting member  10  is located at the bottom end of the upper tube  205  and is extended into the top end of the middle tube  201 . The middle tube  201  and the lower tube  204  are provided with a plurality of locating holes  206 ,  207 ,  208 ,  209  for controlling the handle switch to enable the steel cable  103  to be pulled upward, thereby causing the locating body  14  of the first arresting member  10  to move horizontally into the interior of the housing seat  11 . As a result, the pull rod frame  2  can be adjusted up and down. When the upper tube  205  is slid into the middle tube  201 , the bottom end of the first arresting member  10  comes in contact with the top end of the control member  45  of the second arresting member  40 , thereby enabling the second locating body  49  to move away from the locating hole  208  of the lower tube  204 . As a result, the middle tube  201  and the upper tube  205  are slid into the lower tube  204 . The first locating body  48  is engaged with the locating hole  209  of the lower end of the lower tube  204 . 
     As shown in FIG. 13, the first arresting member  10  and the second arresting member  40  of the present invention are used in conjunction with a four-segmented pull rod frame  3  such that the first arresting member  10  is joined with the lower end of the uppermost  301 , and that the second arresting member  40  is joined with the two middle tubes  302  and  303 . 
     The present invention is versatile in design in that the first arresting member  10  and the second arresting member  40  of the present invention are adapted to a two-segmented, three-segmented, or four-segmented pull rod frame. In light of the locating body  14 , the first locating body  48 , and the second locating body  49  of the present invention being guided by the inclined holes  136  and the guide edges  456  and  457 , the present invention works with precision. In addition, the second arresting member  40  of the present invention is relatively simple in construction and is therefore cost-effective.