Heavy-Duty Automatic Return Buffering Slide

Abstract

A heavy-duty automatic return buffering slide comprising an external slide, two sliding assemblies, an internal slide, a limiting rail, a brake member and a pressure cylinder. The sliding assemblies are combined to two sides of the external slide, respectively, and the internal slide is provided with an engaging hook. Both sides of the internal slide are slidably combined between the sliding assemblies. The limiting rail is provided with a sliding groove and a lower countersink, which is continuous with and located lower than the sliding groove. The limiting rail is combined to the external slide. The brake member has one end pivoted to the pressure cylinder and a top provided with an engaging groove for cooperating with the engaging hook. The brake member is provided with two rollers movably disposed in the sliding groove. The pressure cylinder includes a protruding rod to push the brake member.

1 . A heavy-duty automatic return buffering slide comprising:
 an external slide being provided with a bottom and an opening;   two sliding assemblies being combined in the external slide;   an internal slide including an opening facing the bottom of the external slide, two opposite sides at both sides of the opening, and a top in alignment with the opening, the top being provided with an engaging hook between the two opposite sides of the internal slide, both the two opposite sides of the internal slide being slidably combined between the two sliding assemblies;   a limiting rail being provided with a sliding groove, which is continuous with a countersink lower than the sliding groove, the limiting rail being combined on the bottom of the external slide;   a brake member being provided at one end thereof with a pivoting portion and at a top thereof with an engaging groove for cooperating with the engaging hook, the brake member being further provided with two rollers, which are movably disposed in sliding groove of the limiting rail; and   a pressure cylinder including a normally-protruding rod body having one end provided with a pivoting portion, the pressure cylinder being pivoted to the bottom of the external slide and combined to the brake member through the pivoting portions of the brake member and the pressure cylinder.   
   
   
       2 . The heavy-duty automatic return buffering slide as claimed in  claim 1 , wherein the sliding assemblies each include an outer board to be fixed in the external slide, the internal slide is slidably disposed on the respective outer boards. 
   
   
       3 . The heavy-duty automatic return buffering slide as claimed in  claim 1 , wherein the sliding assemblies each include an outer board and an inner board, the outer boards of the sliding assemblies are fixed the sliding assemblies in the external slide, the inner boards of the sliding assemblies are slidably disposed on the outer boards of the sliding assemblies, the internal slide is slidably combined between the two inner boards. 
   
   
       4 . The heavy-duty automatic return buffering slide as claimed in  claim 1 , wherein the external slide is provided with the bottom and the two opposite sides, the two opposite sides define the opening in alignment with the bottom, the sliding assemblies are combined to the two opposite sides of the external side, respectively.