Positioning device for a rack on the rear of a vehicle

Abstract

A positioning device for a rack on the rear of a vehicle thereof, comprising a main body, two clipping blocks, a tightening assembly and a connecting tube. The main body including a positioning base that connected to a connecting base in the lower side of the positioning base thereof, the clipping blocks are mounted the lower side of the connecting base oppositely, the tightening assembly is provided for tightening the clipping blocks to be clipped the ball so as to rotated pivotally and the connecting tube is positioned to the positioning base of the main body for inserting the bike rack, the bike rack can be pivotally rotated to be creating a horizontal structure for carrying goods, thus providing for carrying goods by cooperating with a shelf, which is very practical.

1 . A positioning device for a rack on the rear of a vehicle thereof, comprising a main body, two clipping blocks, a tightening assembly and a connecting tube, wherein: 
 the main body, including a positioning base that connected to a connecting base in the lower side of the positioning base thereof;    the clipping blocks, formed in a lower side of the connecting base of the main body oppositely, positioned to a ball of the connecting base of a car;    the tightening assembly, provided for clipping the clipping blocks on the ball of the connecting base;    the connecting tube, positioned on the positioning base of the main body for inserting a bike rack, and the bike rack is pivotally rotated to create a vertical or a horizontal structure according to the requirement for carrying the bicycle or luggage by cooperating with a shelf.    
   
   
       2 . The positioning device for a rack on the rear of a vehicle thereof as shown in  claim 1 , wherein the positioning base of the main body is □-shaped, and the connecting base of the main body is □-shaped.  
   
   
       3 . The positioning device for a rack on the rear of a vehicle thereof as shown in  claim 2 , wherein two side plates of the positioning base is L-shaped.  
   
   
       4 . The positioning device for a rack on the rear of a vehicle thereof as shown in  claim 1 , wherein a gap is defined in a front end of a bottom plate of the positioning base, each side plate is defined with an axle hole in the middle portion thereof, a first positioning hole is defined in the upper end of the side plate, a second positioning hole is defined in the front end of the side plate, and a stopping piece is mounted between the upper ends of the rear sides of the side plates.  
   
   
       5 . The positioning device for a rack on the rear of a vehicle thereof as shown in  claim 1 , wherein each side plates of the connecting base of the main body is defined with two through holes.  
   
   
       6 . The positioning device for a rack on the rear of a vehicle thereof as shown in  claim 1 , wherein the clipping block including a seat plate that mounted with a sleeve in the inner side thereof, the lower edge of the sleeve is an arc-shaped concave portion, the sides of the upper end of the seat plate are defined with two connecting holes that opposite to each other, one of the clipping blocks is defined with two locking holes in the lower end of the back thereof, in the lower end of the back of the other clipping blocks is formed two locking grooves, and a groove is defined between the locking grooves.  
   
   
       7 . The positioning device for a rack on the rear of a vehicle thereof as shown in  claim 1 , wherein the tightening assembly comprises a connecting member, a thumb screw, two locking screws and two locking nuts.  
   
   
       8 . The positioning device for a rack on the rear of a vehicle thereof as shown in  claim 1 , wherein the connecting tube is squire, in the lower end of the side of the connecting tube is defined a connecting hole, above the connecting hole are formed with a first locking hole and a second locking hole.  
   
   
       9 . The positioning device for a rack on the rear of a vehicle thereof as shown in  claim 1 , wherein a supporting member is protrusively formed in the positive surface of the connecting tube.  
   
   
       10 . The positioning device for a rack on the rear of a vehicle thereof as shown in  claim 1 , wherein the shelf including two supporting poles, a plurality of connecting poles, mounting poles, two side poles, and a plurality of screws, in the inner side of the supporting pole is defined a plurality of mounting holes equally, and the outer side and the ends of the supporting pole are defined with a positioning hole respectively for connecting to the mounting holes, each end of the connecting poles is defined with an inner threaded hole for inserting into the mounting holes of the supporting poles, the mounting pole is mounted between the mounting holes of the supporting poles, and each end of the side pole is bended to form a pressing section having two locking holes for inserting the connecting member into the connecting pole and positioning on the supporting pole.