Patent Publication Number: US-2022234637-A1

Title: Stroller

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The invention relates to a stroller and, more particularly, to a stroller capable of preventing a wheel from deflection when being folded. 
     2. Description of the Prior Art 
     A stroller is a tool used by parents to carry babies or children when they go shopping. At present, there are various foldable strollers to facilitate storage or transportation. The foldable stroller comprises a frame, a front leg, a rear leg, a wheel base pivotally connected to the front leg, and a wheel pivotally connected to the wheel base. In general, there is a pivot structure disposed on the frame and between the front leg and the rear leg. When the stroller is folded, the front leg can be folded with respect to the pivot structure and the rear leg, thereby reducing the volume of the stroller. However, as shown in  FIG. 1 , when the front leg  34  and the rear leg  30  of the conventional stroller  3  are folded, the wheel  38  pivotally connected to the wheel base  36  may deflect with respect to the rear leg  30 , such that the folded stroller  3  cannot stand stably and may topple easily. 
     SUMMARY OF THE INVENTION 
     The invention provides a stroller capable of preventing a wheel from deflection when being folded, so as to solve the aforesaid problems. 
     According to an embodiment of the invention, a stroller comprises a rear leg, a restraining member, a front leg, a wheelbase and a wheel. The restraining member is disposed on the rear leg. The front leg is capable of being folded with respect to the rear leg. The wheel base is pivotally connected to the front leg. The wheel is pivotally connected to the wheel base. When the front leg is folded with respect to the rear leg, the restraining member restrains the wheel from rotating. 
     Preferably, the restraining member comprises two restraining portions and the two restraining portions are opposite to each other, such that a restraining recess is formed between the two restraining portions. When the front leg is folded with respect to the rear leg, the wheel is engaged in the restraining recess. 
     Preferably, the two restraining portions extend outward to form a V-shaped structure. 
     Preferably, a front end of each of the two restraining portions has a protruding portion. When the front leg is folded with respect to the rear leg, the wheel is clamped between two protruding portions of the two restraining portions. 
     Preferably, the stroller further comprises a handle and a pivot structure. The handle is pivotally connected to the front leg by the pivot structure. 
     Preferably, the stroller further comprises a connecting member pivotally connected to the front leg and the rear leg. 
     As mentioned in the above, the invention disposes the restraining member on the rear leg. When the front leg is folded with respect to the rear leg, the restraining member can restrain the wheel from rotating, so as to prevent the wheel from deflection. Accordingly, the folded stroller can stand stably and will not topple. 
     These and other objectives of the present invention will no doubt become obvious to those of ordinary skill in the art after reading the following detailed description of the preferred embodiment that is illustrated in the various figures and drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a side view illustrating a stroller of the prior art after being folded. 
         FIG. 2  is a perspective view illustrating a stroller according to an embodiment of the invention. 
         FIG. 3  is an enlarged view illustrating a restraining member shown in  FIG. 2 . 
         FIG. 4  is a perspective view illustrating the stroller shown in  FIG. 2  after being folded. 
         FIG. 5  is a side view illustrating the stroller shown in  FIG. 2  after being folded. 
         FIG. 6  is an enlarged view illustrating a restraining member according to another embodiment of the invention. 
     
    
    
     DETAILED DESCRIPTION 
     Referring to  FIGS. 2 to 5 ,  FIG. 2  is a perspective view illustrating a stroller  1  according to an embodiment of the invention,  FIG. 3  is an enlarged view illustrating a restraining member  12  shown in  FIG. 2 ,  FIG. 4  is a perspective view illustrating the stroller  1  shown in  FIG. 2  after being folded, and  FIG. 5  is a side view illustrating the stroller  1  shown in  FIG. 2  after being folded. 
     As shown in  FIG. 2 , the stroller  1  of the invention comprises a rear leg  10 , a restraining member  12 , a front leg  14 , a wheel base  16  and a wheel  18 . The restraining member  12  is disposed on the rear leg  10 . In this embodiment, two restraining members  12  are respectively disposed on opposite sides of the rear leg  10 . The wheel base  16  is pivotally connected to the front leg  14  and the wheel  18  is pivotally connected to the wheel base  16 , such that the wheel  18  can rotate with the wheel base  16  in  360  degrees. In this embodiment, two wheel bases  16  are respectively and pivotally connected to opposite sides of the front leg  14  and two wheels  18  are respectively and pivotally connected to the two wheel bases  16 . Furthermore, two wheels  20  are respectively and pivotally connected to opposite sides of the rear leg  10 . Still further, the stroller  1  may further comprise a handle  22  and a pivot structure  24 , wherein the handle  22  is pivotally connected to the front leg  14  by the pivot structure  24 . In this embodiment, the rear leg  10  may be pivotally connected to the handle  22  or the pivot structure  24 . Accordingly, the rear leg  10 , the front leg  14  and the handle  22  can rotate with respect to each other to fold the stroller  1 . Moreover, the stroller  1  may further comprise a connecting member  26  pivotally connected to the front leg  14  and the rear leg  10 , so as to form a frame of the stroller  1  with the front leg  14 , the rear leg  10  and the handle  22 . 
     As shown in  FIG. 3 , the restraining member  12  comprises two restraining portions  120 , wherein the two restraining portions  120  are opposite to each other, such that a restraining recess  122  is formed between the two restraining portions  120 . In this embodiment, the two restraining portions  120  extend outward to form a V-shaped structure. 
     As shown in  FIGS. 4 and 5 , the front leg  14  can be folded with respect to the rear leg  10  to fold the stroller  1 . When the front leg  14  is folded with respect to the rear leg  10 , the wheel  18  is engaged in the restraining recess  122 . Thus, when the front leg  14  is folded with respect to the rear leg  10 , the restraining member  12  restrains the wheel  18  from rotating, so as to prevent the wheel  18  from deflection. Accordingly, the folded stroller  1  can stand stably and will not topple. 
     Referring to  FIG. 6 ,  FIG. 6  is an enlarged view illustrating a restraining member  12 ′ according to another embodiment of the invention. The main difference between the restraining member  12 ′ and the aforesaid restraining member  12  is that a front end of each of the two restraining portions  120  of the restraining member  12 ′ has a protruding portion  124 , as shown in  FIG. 6 . The restraining member  12  shown in  FIG. 4  may be replaced by the restraining member  12 ′ shown in  FIG. 6 . Thus, when the front leg  14  is folded with respect to the rear leg  10 , the wheel  18  is clamped between two protruding portions  124  of the two restraining portions  120 , such that the wheel  18  is engaged with the restraining member  12 ′ more stably. Accordingly, the folded stroller  1  can stand stably and will not topple. 
     As mentioned in the above, the invention disposes the restraining member on the rear leg. When the front leg is folded with respect to the rear leg, the restraining member can restrain the wheel from rotating, so as to prevent the wheel from deflection. Accordingly, the folded stroller can stand stably and will not topple. 
     Those skilled in the art will readily observe that numerous modifications and alterations of the device and method may be made while retaining the teachings of the invention. Accordingly, the above disclosure should be construed as limited only by the metes and bounds of the appended claims.