Connection device for connecting car barrier to head restraint posts

Abstract

A car barrier includes two posts and a plurality of bars are connected between the two posts. Each bar includes a retractable inner tube. Two respective top ends of the two posts are in contact with a vehicle ceiling and two respectively lower ends of the two posts are connected with two respective connection devices. Two clamping units are connected to the two connection devices and each clamping unit includes two members and each member has a notch defined in an inner surface thereof. The first member and the second member clamp a support rod of a head restraint between the first and second notches.

1 . A car barrier comprising:
 two posts and a plurality of bars connected between the two posts, two respective top ends of the two posts adapted to be in contact with a vehicle ceiling, two respectively lower ends of the two posts connected with two respective connection devices, two clamping units connected to the two connection devices and each clamping unit including a first member and a second member, the first member having a first notch defined in an inner surface thereof and the second member having a second notch defined in an inner surface thereof, the second notch facing the first notch, the first member and the second member adapted to clamp a support rod of a head restraint between the first and second notches.   
   
   
       2 . The barrier as claimed in  claim 1 , wherein each of the connection devices is rotatable relative to the posts and the clamping units are pivotable to the connection devices respectively. 
   
   
       3 . The barrier as claimed in  claim 1 , wherein a connection tube is connected between the connection device and the first member. 
   
   
       4 . The barrier as claimed in  claim 3 , wherein the first member has a first recess defined in the inner surface and a first end thereof and a through hole is defined through a wall of an outer surface of the first member and communicates with the first recess, the connection tube includes an elongate hole defined therethrough, the second member has a second recess which is located corresponding to the first recess, a bolt extends through the through hole of the first member, the elongate slot of the connection tube, the first recess of the first member, the second recess of the second member and is connected with a knob. 
   
   
       5 . The barrier as claimed in  claim 4 , the first and second members are pivotably connected to each other at two respective second ends thereof. 
   
   
       6 . The barrier as claimed in  claim 4 , wherein two protrusions extend from an outer surface of the first member and the through hole is located between the two protrusions, a C-shaped flange extends from an outer surface of the second member, the bolt has an engaging end which is perpendicular to an axis of the bolt and is engaged with a space between the two protrusions, the bolt includes a threaded section which is threadedly connected to the knob which is engaged with the annular flange. 
   
   
       7 . The barrier as claimed in  claim 1 , wherein the second member has a concavity defined in the inner surface thereof and a clamping member is movably engaged with the concavity, the second notch is defined in the clamping member, a bolt extends through the second member and is threadedly connected to the clamping member. 
   
   
       8 . The barrier as claimed in  claim 1 , wherein each connection device includes a first disk member and a second disk member, the first disk member has a first toothed surface which is removably engaged with a second toothed surface of the second disk member, a spring is biased between the first and second disk members, a first groove is defined in an outer surface thereof so as to receive the post therein and a second groove is defined in an outer surface of the second disk member so as to receive the connection tube, a bolt extends through the connection tube, the second disk member, the spring, the first disk member, the post and is connected with a knob.