Horizontal Bar Device

Abstract

A horizontal bar device comprises at least three vertically disposed struts, and crossbars connected between the two adjacent struts. A plurality of sleeves are sleeved on an upper part of each of the struts with the sleeves being stacked on top of one another, each end of each of the crossbars is fixedly connected to one of the sleeves, and each of the struts has a blocking surface capable of preventing the sleeves from sliding downward. A positioning structure is disposed between the two adjacent sleeves capable of preventing rotation of the sleeves. An upper end of each of the struts is sleeved with a locking sleeve, and the locking sleeve is pressed against the sleeves through a fastener.

What is claimed is: 
     
         1 . A horizontal bar device, comprising:
 at least three vertically disposed struts;   a plurality of sleeves sleeved on an upper part of each of the struts; and   crossbars connected between two adjacent struts with each end of each crossbar being fixedly connected to one of the sleeves;   wherein the sleeves are stacked on top of one another, an axial direction of a main portion between two ends of each crossbar is perpendicular to an axial direction of the sleeves, and each strut has a blocking surface capable of preventing the sleeves from sliding downward.   
     
     
         2 . The horizontal bar device as claimed in  claim 1 , wherein the blocking surface is an annular surface on a first strut capable of abutting against a lower end surface of a first sleeve. 
     
     
         3 . The horizontal bar device as claimed in  claim 2 , wherein the first strut is a tubular rod comprising a leg tube and a straight tube, the straight tube is inserted and fixed in an upper end of the leg tube, and the annular surface is an annular end surface of the upper end of the leg tube. 
     
     
         4 . The horizontal bar device as claimed in  claim 2 , wherein the first strut has a shoulder, and the annular surface is a shouldering surface. 
     
     
         5 . The horizontal bar device as claimed in  claim 1 , wherein the first blocking surface is a convex blocker connected to the first strut. 
     
     
         6 . The horizontal bar device as claimed in  claim 1 , wherein an upper end of each strut is sleeved with a locking sleeve, and the locking sleeve is pressed against the first sleeve through a fastener. 
     
     
         7 . The horizontal bar device as claimed in  claim 6 , wherein the sleeves sleeved over the first strut are rotatable with the first strut as an axis, and a positioning structure is disposed between the two adjacent sleeves, the positioning structure capable of preventing rotation of the sleeves. 
     
     
         8 . The horizontal bar device as claimed in  claim 7 , wherein the positioning structure comprises a notch disposed at an upper end surface of the first sleeve and a bulge disposed at a lower end surface of the first sleeve, and the bulge and the notch between the two adjacent sleeves interlock with each other. 
     
     
         9 . The horizontal bar device as claimed in  claim 8 , wherein an annular surface is disposed with a notch or bulge capable of preventing rotation of the first sleeve. 
     
     
         10 . The horizontal bar device as claimed in  claim 6 , wherein the first sleeve is sleeved over the straight tube, the locking sleeve is sleeved on an upper end of the straight tube, an upper end surface of the locking sleeve is a pressed surface, the fastener is a bolt, a brim of the bolt is pressed against the pressed surface, and a lower end of the bolt passes through the pressed surface and is connected to an inside of the first strut through threads. 
     
     
         11 . The horizontal bar device as claimed in  claim 10 , wherein a spring washer sleeved on the bolt is provided between the brim of the bolt and the pressed surface, and the spring washer is abutted against the brim of the bolt and the pressed surface. 
     
     
         12 . The horizontal bar device as claimed in  claim 3 , wherein the leg tube comprises an inclined portion, an upper end of the inclined portion is bent upwardly to form a vertical mounting portion, a lower end thereof is bent downwardly to form a vertical support portion, the support portion is connected with a footing, an upper surface of each of the footings has a vertical connector, and the support portion is plug-connected to the connector. 
     
     
         13 . The horizontal bar device as claimed in  claim 12 , wherein the mounting portion has a tube section with an inner diameter smaller than an inner diameter of the inclined portion, and the straight tube is plug-connected into the mounting portion by tight fit. 
     
     
         14 . The horizontal bar device as claimed in  claim 1 , wherein the two ends of the first crossbar are bent such that the main portion of the first crossbar intersects the two ends to form included angles, the two ends and the main portion are in a same plane, and the plane in which the first crossbar is located is set in a vertical direction. 
     
     
         15 . The horizontal bar device as claimed in  claim 9 , wherein the inclined portion comprises at least two tube bodies, and the two neighboring tube bodies are connected, with connection being made through their respective plug-connection to a connecting tube in-between. 
     
     
         16 . The horizontal bar device as claimed in  claim 1 , wherein the two ends of the first crossbar are bent such that the main portion of the first crossbar intersects the two ends to form included angles, the two ends and the main portion are in a same plane, and the plane in which the first crossbar is located is set in a horizontal direction.