Patent Publication Number: US-8540039-B1

Title: Accommodating structure with a belt transmission structure

Description:
BACKGROUND OF THE INVENTION 
     1. Field of Invention 
     The invention relates to an accommodating structure and, in particular, to an accommodating structure with a belt transmission structure. 
     2. Related Art 
       FIG. 7  shows a conventional baggage  90 . At the bottom of the baggage  90  is provided with a belt-type roller  91 . When its user rolls the baggage  90 , the roller  91  is in contact with the ground. When there is a hole on the ground, the roller  91  can still pass smoothly. When the user wants to walk stairs with the baggage  90  and tries to drag the baggage  90  along, the body of the baggage  90  may hit the stair corner and have damages because the roller  91  cannot get a support there. Moreover, it is more strenuous to drag in this case due to friction. Therefore, the user often lists the entire baggage  90  up before walking the stairs. This is quite inconvenient. It is an objective of the invention to solve this problem. 
     SUMMARY OF THE INVENTION 
     An objective of the invention is to provide an accommodating structure with a belt transmission structure. Such an accommodating structure can go smoothly on an uneven ground. The user can save some energy while dragging it. 
     To achieve the above-mentioned objective, the invention includes: a body having an accommodating space for accommodating objects; two tracks in a loop shape, each of the tracks being fixed on two opposite sides of the body by a plurality of joining elements and extending along the edges of the body to a corner for the body to be dragged along; a plurality of sliding teeth disposed on and along the loop tracks in a slideable way and exposed from the side edges of the body, with each of the sliding teeth having a roller in touch with the corresponding track; and a belt fixed at the sliding teeth along the loop track and rolling with the sliding teeth on the tracks. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       These and other features, aspects and advantages of the invention will become apparent by reference to the following description and accompanying drawings which are given by way of illustration only, and thus are not limitative of the invention, and wherein: 
         FIG. 1  is a three-dimensional perspective view of the baggage according to the first embodiment of the invention; 
         FIG. 2  is an assembly view of the belt transmission structure in the first embodiment; 
         FIG. 3  is an exploded view of the belt transmission structure in the first embodiment; 
         FIG. 4  is a cross-sectional view of the sliding teeth in the first embodiment; 
         FIG. 5  is a schematic view of the baggage of the first embodiment going up stairs; 
         FIG. 6  is a planar view of a golf bag according to the second embodiment; and 
         FIG. 7  is a schematic view of a conventional baggage going up stairs. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     The present invention will be apparent from the following detailed description, which proceeds with reference to the accompanying drawings, wherein the same references relate to the same elements. 
     An embodiment of the disclosed accommodating structure with a belt transmission structure is shown in  FIGS. 1 to 4 . It includes a body and a belt transmission structure. The body in this embodiment is a baggage  1  that has an accommodating space (not shown) to hold objects, as shown in  FIG. 1 . The belt transmission structure consists of two tracks  2 , several joining elements  3 , several sliding teeth  4 , and a belt  5 . 
     As shown in  FIGS. 1 and 2 , each of the tracks  2  has a loop structure. The two tracks  2  are fixed to the two opposite sides of the baggage  1  by the joining elements  3 . Each of the tracks  2  is located at an edge of the body  1 , with one end extending to a corner where the baggage  1  is about to touch the ground. The tracks  2  in this embodiment have a loop structure with a long linear section. 
     As shown in  FIGS. 1 and 2 , the sliding teeth  4  are disposed on the tracks  2  in a slideable way along the loop structure thereof and exposed from the corners of the baggage  1 . Each of the sliding teeth has a roller  40  in touch with the track as the sliding tooth slides. 
     As shown in  FIGS. 1 to 4 , the belt  5  is fixed at the sliding teeth  4  along the loop structure of the tracks  2 . The belt  5  can run around the tracks  2  as the sliding teeth  4  slide. In this embodiment, each of the sliding teeth  4  has an end cap  45  on the outer side thereof to fix the belt  5 . 
     As shown in  FIGS. 1 to 3 , each of the two tracks  2  of this embodiment has frames  20  in the loop structure. The joining elements  3  are cylindrical elements. The joining elements  3  go through the frames  20  to be fixed on the baggage  1 . 
     As shown in  FIG. 3 , each of the tracks  2  in this embodiment has two engaging grooves  21  on both sides. Both sides of each of the sliding teeth  4  have two hook parts  41 . Each of the sliding teeth  4  uses the two hook parts  41  to correspondingly connect to the two engaging grooves  21  of the track  2 . 
     As shown in  FIG. 4 , each of the sliding teeth  4  in this embodiment has two hollow parts  42  with a spacer  43  in between. An axle  44  goes through the two hollow parts  42  and the spacer  43  from both sides in each of the sliding tooth. The axle  44  inside each of the hollow parts  42  is pivotally provided with the roller  40 . Each of the tracks  2  has a guiding groove  22  corresponding to the roller  40 . The roller  40  rolls on the bottom of the guiding groove  22  when the corresponding sliding tooth  4  is under a force. 
     When one pulls the baggage  1  of this embodiment on a normal road, some of the sliding teeth  4  are in touch with the ground. As the user pulls the baggage  1 , the sliding teeth  4  wind around the tracks  2 , achieving the same roller effect as usual baggage  1 . 
     As shown in  FIG. 5 , to walk stairs with the disclosed baggage  1 , the user can pull the baggage  1  while climbing up the stairs  6 . In this case, some of the sliding teeth  4  on the tracks  2  are in contact with the right angle  60  of the stairs  6 . As the baggage  1  is dragged up the stairs  6 , the drop between the sliding teeth and the flexibility of the belt enable the sliding teeth  4  as the support of the baggage  1 . Since the sliding teeth wind around the tracks  2 , the baggage  1  is prevented from fiction due to direct contact with the stairs. Therefore, the baggage  1  can be readily dragged along as the user walks up the stairs, thus saving energy. 
     Of course, the invention has many other embodiments that only differ in details. Please refer to  FIG. 6  for a second embodiment of the invention. In this embodiment, the body is a golf bag  1 A. The tracks  2 A have a loop structure with right-angle bends. The tracks  2 A are also fixed onto the gold bag  1 A by several joining elements  3 A. They are also provided with several sliding teeth  4 A and a belt  5 A to achieve the same effects as the first embodiment. 
     Although the invention has been described with reference to specific embodiments, this description is not meant to be construed in a limiting sense. Various modifications of the disclosed embodiments, as well as alternative embodiments, will be apparent to people skilled in the art. Therefore, it is contemplated that the appended claims will cover all modifications that fall within the true scope of the invention.