Abstract:
A one hand folding structure for stroller, where a driving member is a able to drive engaging rods provided at opposing sides to disengage from engaging portions simultaneously, so as to allow one hand folding operation, wherein the driving member is provided beneath the stroller seat, so that in folding the frame the user would naturally removes the toddler from the seat first and then activates the driving member of driving device to result in a series of one hand folding responses, so as to prevent accidental folding and possible dangers while the user pushes the stroller while allowing one hand operation to achieve the intended folding operation.

Description:
CROSS-REFERENCES TO RELATED APPLICATIONS 
   Not Applicable 
   STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT 
   Not Applicable 
   DESCRIPTION 
   1. Field of Invention 
   This invention relates to a one hand folding structure used for folding any type of strollers where only one hand operation is needed to fold the strollers, and a driving member is provided beneath a seat to eliminate accidental activation. 
   2. Background 
   Conventional strollers can usually be extended into an extended position for use and for riding babies or folded into a collapsed position for storage. When one intends to fold the strollers from its extended state to collapsed state, the folding structure can only be operated after the toddler riding in the frame has been taken away. However, if the toddler has yet to learn walking or standing alone, the user usually needs to hold the toddler in one hand with the remaining hand to operate the folding structure, which is relatively inconvenient. Therefore, strollers having a one hand operation folding structure have been commercially available to allow the user to control and release the frame for folding the frame of the stroller into the collapsed state. 
   In the conventional structure, such as that disclosed in U.S. Pat. No. 6,068,284, the stroller includes a frame and a wheel assembly for supporting and moving the frame. The frame mainly includes handle tubes, front leg tubes, rear leg tubes, seat tubes, a joint release mechanism and a folding controller, wherein the handle tubes include grip portions and two handle lower tubes and the joint release mechanism at least include an engaging rod and a recovering spring. 
   The folding controller of the conventional structure is provided to the gripping portions of the handle tubes, where the folding controller drives the engaging rod in the joint release mechanism to release and engage by means of a flexible member therein, for extending and collapsing the stroller. 
   In the above frame, the conventional folding controllers are provided to the gripping portions of the handle tubes, which are mainly used to push the stroller while the stroller is in use. Accordingly, the user can possibly accidentally activate the folding controller thereby resulting in accidental folding when the two features are provided at the same location, which may expose the toddler riding in the stroller to dangers. However, the addition of an independent folding controller will result in increased cost. 
   SUMMARY OF INVENTION 
   To overcome the shortcoming the of conventional folding controlling devices that are provided to the gripping portion of the handle tube, which can possibly result in accidental activation of the folding controller while pushing the stroller, this invention discloses a driving member provided beneath the seat, wherein the driving member has opposing ends connected to respective rotating members provided to opposing sides of the frame. The frame is collapsed after the toddler leaves the seat by activating the driving member so as to prevent accidental folding and possible dangers due to erroneous operation of the user. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
     These and other modifications and advantages will become even more apparent from the following detained description of a preferred embodiment of the invention and from the drawings in which: 
       FIG. 1  is a perspective view of this invention 
       FIG. 2  is an exploded view of this invention; 
       FIG. 3  is a cross-sectional view of this invention; 
       FIG. 4  is a side elevational view of this invention; and 
       FIG. 5  is a schematic view showing this invention while folding the frame. 
   

   DETAILED DESCRIPTION OF THE INVENTION (PREFERRED EMBODIMENTS) 
   With reference to  FIGS. 1-4 , this invention discloses a one hand folding structure for stroller  1  provided to a foldable stroller frame  2  and to be activated by a user at a location beneath a seat  3  for folding the stroller frame  2 , so as to prevent the user from accidental activation of undesired folding that would expose a toddler to dangers. This invention includes an upper frame  4 , a lower frame  5 , a slide member  6 , rotating member  7  and a driving member  8   
   The upper frame  4  includes a pushing rod  41 , where the pushing rod  41  serves to be pushed by the user. The upper frame  4  is provided at opposing lower ends thereof with an upper joint  42  that is affixed thereto. The upper joint  42  includes an engaging portion  421 . In this embodiment, the upper joint  42  is provided with a reinforced member  43  to reinforce the upper joint  42 . 
   The lower frame  5  includes an upper end pivoted to the upper joint  42  of the upper frame  4  to cause the lower frame  5  rotating towards a single direction approaching the upper frame  4  for folding. 
   The slide member  6  is provided in opposing sides of the lower frame  5  and capable of vertically reciprocal movement in the lower frame  5 . The slide member  6  further includes an engaging rod  61  laterally projecting out of the lower frame  5  and moving along with the slide member  6 . The engaging rod  61  is maintained to form an engagement with the engaging portion  421  of the upper joint  42  by means of a resilient member  62 , so as prevent the upper frame  4  from rotating in a folding direction. The slide member  6  is further formed at a lower end thereof with a slot opening  63  through and to which a driving rod  64  passes and is connected. 
   The rotating member  7  is rotatably provided to opposing upper ends of the lower frame  5 . In this embodiment, the rotating member  7  includes a pair of lids. The rotating member  7  is formed with a driving slot  71  in which the driving rod  64  moves. Since the driving rod  64  passes through the slide member  6 , when the rotating member  7  rotates, the driving slot  71  would drive vertically reciprocal movement of the slide member  6 . 
   In this embodiment, the driving member  8  is a flexible cable and a grip  81  is provided at a medial section of the driving member  8  with a grip  81  to be gripped by the user. The driving member  8  includes opposing ends that are each connected to the rotating member  7 . The user is able to activate the driving member  8 , so that the driving member  8  would cause simultaneous rotation of the rotating member  7  at opposing sides thereof so as to release engagement between the engaging rod  61  and the engaging portion  421  of the upper joint  42 , whereby the user is able to activate the entire stroller frame  2  for folding the stroller frame  2  (as shown in  FIG. 5 ). 
   To enhance safeness of this invention, the lower frame  5  may further be provided with a safety piece  9  at a location corresponding to rotation of the rotating member  7 , so that when the stroller frame  2  is at its extended state, the safety piece  9  is able to prevent the rotating member  7  from being activated by the driving member  8  to release the stroller frame  2 . When the user intends to fold the frame, the safety piece  9  is first rotated to release restriction to the rotating member  7 , so that the user is able to activate the driving member  8  for folding the frame  2 , thereby enhancing safeness of this invention. 
   According to the one hand folding structure for stroller of this invention, the one hand operation is achieved by a driving member provided to a lower portion of the stroller frame seat. This invention may also be further provided with a safety piece so as to further enhance the safeness in folding the stroller frame of this invention. 
   This invention is related to a novel creation that makes a breakthrough in the art. Aforementioned explanations, however, are directed to the description of preferred embodiments according to this invention. Since this invention is not limited to the specific details described in connection with the preferred embodiments, changes and implementations to certain features of the preferred embodiments without altering the overall basic function of the invention are contemplated within the scope of the appended claims.