Guide structure for telescopic rail assembly

Abstract

Guide structure for telescopic rail assembly, including an outer slide rail, an inner slide rail, a protective section, a pair of first slopes, a pair of second slopes and a pair of third slopes. The outer slide rail is disposed on a cabinet body, while the inner slide rail is disposed on a drawer and slidably nested in the outer slide rail. A ball bearing is disposed between the outer and inner slide rails to facilitate sliding thereof. The protective section is formed with the first and second slopes and positioned between front end of the ball bearing and front end of the outer slide rail. Rear end of the inner slide rail is formed with the third slopes. After the drawer is drawn out of the cabinet body, by means of the first, second and third slopes, the inner slide rail can be easily nested into the outer slide rail without colliding the ball bearing, whereby the ball bearing will not jump away or damage.

What is claimed is:  
     
         1 . Guide structure for telescopic rail assembly, comprising an outer slide rail, a protective section and an inner slide rail, wherein: 
 the outer and inner slide rails are channel bodies with predetermined length, each of the outer and inner slide rails having a bottom wall and two side walls, each side wall having C-shaped cross-section and serving as a spherical ball rail, outer sides of the bottom walls of the outer and inner slide rails being respectively fixed on a cabinet body and a drawer;    the ball bearing is a channel body having U-shaped cross-section and disposed between the outer and inner slide rails, several balls being arranged on side walls of the ball bearing;    an outer side of bottom wall of the ball bearing corresponds to the inner side of the bottom wall of the outer slide rail, the ball bearing being disposed in the outer slide rail, the inner slide rail being symmetrically laid in the outer slide rail with the side walls of the ball bearing positioned between the side walls of the outer and inner slide rails; and    the protective section is a channel body with a certain length, the protective section having a cross-section corresponding to the outer slide rail, an outer side of bottom wall of the protective section corresponding to the inner side of the bottom wall of the outer slide rail, the protective section being fixed in the outer slide rail at a predetermined portion thereof between the front end of the outer slide rail and the front end of the ball bearing, said guide structure being characterized in that: 
 the protective section is formed with a pair of first slopes and a pair of second slopes;  
 each first slope is formed at the front end of each side wall of the protective section in such a manner that each first slope is inclined from inner side to outer side toward the side wall of the outer slide rail;  
 each second slope is formed on the shoulder section of the front end of the bottom wall of the protective section in such a manner that each second slope is inclined from inner side to outer side toward the bottom wall of the outer slide rail; and  
 the outer ends of the first and second slopes are spaced from the front end of the outer slide rail by a predetermined distance.  
   
     
     
         2 . Guide structure for telescopic rail assembly, comprising an outer slide rail, a protective section and an inner slide rail, wherein: 
 the outer and inner slide rails are channel bodies with predetermined length, each of the outer and inner slide rails having a bottom wall and two side walls, each side wall having C-shaped cross-section and serving as a spherical ball rail, outer sides of the bottom walls of the outer and inner slide rails being respectively fixed on a cabinet body and a drawer;    the ball bearing is a channel body having U-shaped cross-section and disposed between the outer and inner slide rails, several balls being arranged on side walls of the ball bearing;    an outer side of bottom wall of the ball bearing corresponds to the inner side of the bottom wall of the outer slide rail, the ball bearing being disposed in the outer slide rail, the inner slide rail being symmetrically laid in the outer slide rail with the side walls of the ball bearing positioned between the side walls of the outer and inner slide rails; and    the protective section is a channel body with a certain length, the protective section having a cross-section corresponding to the outer slide rail, an outer side of bottom wall of the protective section corresponding to the inner side of the bottom wall of the outer slide rail, the protective section being fixed in the outer slide rail at a predetermined portion thereof between the front end of the outer slide rail and the front end of the ball bearing, said guide structure being characterized in that: 
 the protective section is formed with a pair of first slopes and the inner slide rail is formed with a pair of third slopes;  
 each first slope is formed at the front end of each side wall of the protective section in such a manner that each first slope is inclined from inner side to outer side toward the side wall of the outer slide rail, the outer end of the first slope being spaced from the front end of the outer slide rail by a predetermined distance; and  
 each third slope is formed at the rear end of each side wall of the inner slide rail in such a manner that each third slope inclinedly outward extends toward the shoulder section of the bottom wall of the inner slide rail.  
   
     
     
         3 . Guide structure for telescopic rail assembly, comprising an outer slide rail, an inner slide rail, a protective section and a stop section, wherein: 
 the outer and inner slide rails are channel bodies with predetermined length, each of the outer and inner slide rails having a bottom wall and two side walls, each side wall having C-shaped cross-section and serving as a spherical ball rail, outer sides of the bottom walls of the outer and inner slide rails being respectively fixed on a cabinet body and a drawer;    the ball bearing is a channel body having U-shaped cross-section and disposed between the outer and inner slide rails, several balls being arranged on side walls of the ball bearing;    an outer side of bottom wall of the ball bearing corresponds to the inner side of the bottom wall of the outer slide rail, the ball bearing being disposed in the outer slide rail, the inner slide rail being symmetrically laid in the outer slide rail with the side walls of the ball bearing positioned between the side walls of the outer and inner slide rails;    the protective section is a channel body with a certain length, the protective section having a cross-section corresponding to the outer slide rail, an outer side of bottom wall of the protective section corresponding to the inner side of the bottom wall of the outer slide rail, the protective section being fixed in the outer slide rail between the front end of the outer slide rail and the front end of the ball bearing; and    the stop section is disposed at a predetermined portion of the outer slide rail for stopping the ball bearing from slipping out of the front end of the outer slide rail, said guide structure being characterized in that: 
 the protective section is fixed at the front end of the ball bearing and is movable along with the ball bearing, whereby when nesting the inner slide rail into the outer slide rail, the inner slide rail will not abut against and push the front end of the ball bearing so that the ball bearing is protected from being damaged and the assembly can be truly completed;  
 the protective section is formed with a pair of first slopes and a pair of second slopes;  
 each first slope is formed at the front end of each side wall of the protective section in such a manner that each first slope is inclined from inner side to outer side toward the side wall of the outer slide rail;  
 each second slope is formed on the shoulder section of the front end of the bottom wall of the protective section in such a manner that each second slope is inclined from inner side to outer side toward the bottom wall of the outer slide rail; and  
 when the protective section is stopped by the stop section, the outer ends of the first and second slopes are spaced from the front end of the outer slide rail by a predetermined distance.  
   
     
     
         4 . Guide structure for telescopic rail assembly, comprising an outer slide rail, an inner slide rail, a protective section and a stop section, wherein: 
 the outer and inner slide rails are channel bodies with predetermined length, each of the outer and inner slide rails having a bottom wall and two side walls, each side wall having C-shaped cross-section and serving as a spherical ball rail, outer sides of the bottom walls of the outer and inner slide rails being respectively fixed on a cabinet body and a drawer;    the ball bearing is a channel body having U-shaped cross-section and disposed between the outer and inner slide rails, several balls being arranged on side walls of the ball bearing;    an outer side of bottom wall of the ball bearing corresponds to the inner side of the bottom wall of the outer slide rail, the ball bearing being disposed in the outer slide rail, the inner slide rail being symmetrically laid in the outer slide rail with the side walls of the ball bearing positioned between the side walls of the outer and inner slide rails;    the protective section is a channel body with a certain length, the protective section having a cross-section corresponding to the outer slide rail, an outer side of bottom wall of the protective section corresponding to the inner side of the bottom wall of the outer slide rail, the protective section being fixed in the outer slide rail between the front end of the outer slide rail and the front end of the ball bearing; and    the stop section is disposed at a predetermined portion of the outer slide rail for stopping the ball bearing from slipping out of the front end of the outer slide rail, said guide structure being characterized in that: 
 the protective section is fixed at the front end of the ball bearing and is movable along with the ball bearing, whereby when nesting the inner slide rail into the outer slide rail, the inner slide rail will not abut against and push the front end of the ball bearing so that the ball bearing is protected from being damaged and the assembly can be truly completed;  
 the protective section is formed with a pair of first slopes;  
 the inner slide rail is formed with a pair of third slopes;  
 each first slope is formed at the front end of each side wall of the protective section in such a manner that each first slope is inclined from inner side to outer side toward the side wall of the outer slide rail, whereby when the protective section is stopped by the stop section, the outer end of the first slope is spaced from the front end of the outer slide rail by a predetermined distance; and  
 each third slopes is formed at the rear end of each side wall of the inner slide rail in such a manner that each third slope inclinedly outward extends toward the shoulder section of the bottom wall of the inner slide rail.  
   
     
     
         5 . Guide structure for telescopic rail assembly as claimed in  claim 3 , wherein a connecting section is disposed at a predetermined portion of the rear end of the protective section for connecting with the ball bearing.  
     
     
         6 . Guide structure for telescopic rail assembly as claimed in  claim 4 , wherein a connecting section is disposed at a predetermined portion of the rear end of the protective section for connecting with the ball bearing.  
     
     
         7 . Guide structure for telescopic rail assembly as claimed in  claim 5 , wherein the connecting section is formed by two plate bodies inward extending from the rear ends of the side walls of the protective section by a predetermined length, each plate body being formed with perforations corresponding to and fitted on the balls of the ball bearing.  
     
     
         8 . Guide structure for telescopic rail assembly as claimed in  claim 6 , wherein the connecting section is formed by two plate bodies inward extending from the rear ends of the side walls of the protective section by a predetermined length, each plate body being formed with perforations corresponding to and fitted on the balls of the ball bearing.  
     
     
         9 . Guide structure for telescopic rail assembly as claimed in  claim 3 , wherein the protective section is such formed that the protective section outward extends from the front end of the ball bearing.  
     
     
         10 . Guide structure for telescopic rail assembly as claimed in  claim 4 , wherein the protective section is such formed that the protective section outward extends from the front end of the ball bearing.  
     
     
         11 . Guide structure for telescopic rail assembly as claimed in  claim 3 , wherein the stop section is a projecting lug disposed on the bottom wall of the outer slide rail.  
     
     
         12 . Guide structure for telescopic rail assembly as claimed in  claim 4 , wherein the stop section is a projecting lug disposed on the bottom wall of the outer slide rail.  
     
     
         13 . Guide structure for telescopic rail assembly as claimed in  claim 1 , wherein the first and second slopes intersect the inner faces of the side walls and the bottom wall of the outer slide rail.  
     
     
         14 . Guide structure for telescopic rail assembly as claimed in  claim 3 , wherein the first and second slopes intersect the inner faces of the side walls and the bottom wall of the outer slide rail.  
     
     
         15 . Guide structure for telescopic rail assembly as claimed in  claim 2 , wherein the first slopes intersect the inner faces of the side walls of the outer slide rail.  
     
     
         16 . Guide structure for telescopic rail assembly as claimed in  claim 4 , wherein the first slopes intersect the inner faces of the side walls of the outer slide rail.  
     
     
         17 . Guide structure for telescopic rail assembly, comprising an outer slide rail, a protective section and an inner slide rail, wherein: 
 the outer and inner slide rails are channel bodies with predetermined length, each of the outer and inner slide rails having a bottom wall and two side walls, each side wall having C-shaped cross-section and serving as a spherical ball rail, outer sides of the bottom walls of the outer and inner slide rails being respectively fixed on a cabinet body and a drawer, an engaging plate being disposed on a predetermined portion of inner face of bottom wall of the inner slide rail;    the ball bearing is a channel body having U-shaped cross-section and disposed between the outer and inner slide rails, several balls being arranged on side walls of the ball bearing;    an outer side of bottom wall of the ball bearing corresponds to the inner side of the bottom wall of the outer slide rail, the ball bearing being disposed in the outer slide rail, the inner slide rail being symmetrically laid in the outer slide rail with the side walls of the ball bearing positioned between the side walls of the outer and inner slide rails; and    the protective section is a channel body with a certain length, the protective section having a cross-section corresponding to the outer slide rail, an outer side of bottom wall of the protective section corresponding to the inner side of the bottom wall of the outer slide rail, the protective section being fixed in the outer slide rail at a predetermined portion thereof between the front end of the outer slide rail and the front end of the ball bearing, the front end of the protective section being flush with the front end of the outer slide rail, a projecting rectangular engaging block being disposed on a predetermined portion of inner face of bottom wall of the protective section for engaging with the engaging plate and preventing the drawer from detaching from the cabinet body, when pressing the engaging plate, the drawer being drawable out of the cabinet body, said guide structure being characterized in that: 
 the protective section is fixed on the outer slide rail and formed with a pair of first slopes and a pair of second slopes;  
 each first slope is formed on the middle portion of the inner face of the side wall of the protective section, each first slope being inclined from inner side to outer side toward the side wall of the outer slide rail; and  
 each second slope is formed on the front end of the engaging block, each second slope being inclined from inner side to outer side toward the bottom wall of the protective section and linked and formed a slop.  
   
     
     
         18 . Guide structure for telescopic rail assembly, comprising an outer slide rail, a protective section and an inner slide rail, wherein: 
 the outer and inner slide rails are channel bodies with predetermined length, each of the outer and inner slide rails having a bottom wall and two side walls, each side wall having C-shaped cross-section and serving as a spherical ball rail, outer sides of the bottom walls of the outer and inner slide rails being respectively fixed on a cabinet body and a drawer, an engaging plate being disposed on a predetermined portion of inner face of bottom wall of the inner slide rail;    the ball bearing is a channel body having U-shaped cross-section and disposed between the outer and inner slide rails, several balls being arranged on side walls of the ball bearing;    an outer side of bottom wall of the ball bearing corresponds to the inner side of the bottom wall of the outer slide rail, the ball bearing being disposed in the outer slide rail, the inner slide rail being symmetrically laid in the outer slide rail with the side walls of the ball bearing positioned between the side walls of the outer and inner slide rails; and    the protective section is a channel body with a certain length, the protective section having a cross-section corresponding to the outer slide rail, an outer side of bottom wall of the protective section corresponding to the inner side of the bottom wall of the outer slide rail, the protective section being fixed in the outer slide rail at a predetermined portion thereof between the front end of the outer slide rail and the front end of the ball bearing, the front end of the protective section being flush with the front end of the outer slide rail, a projecting rectangular engaging block being disposed on a predetermined portion of inner face of bottom wall of the protective section for engaging with the engaging plate and preventing the drawer from detaching from the cabinet body, when pressing the engaging plate, the drawer being drawable out of the cabinet body, said guide structure being characterized in that: 
 the protective section is fixed on the outer slide rail and formed with a pair of first slopes, the inner slide rail being formed with a pair of third slopes;  
 each first slope is formed on the middle portion of the inner face of the side wall of the protective section, each first slope being inclined from inner side to outer side toward the side wall of the outer slide rail; and  
 each third slope is formed at the rear end of each side wall of the inner slide rail in such a manner that each third slope inclinedly outward extends toward the shoulder section of the bottom wall of the inner slide rail.  
   
     
     
         19 . Guide structure for telescopic rail assembly as claimed in  claim 17 , wherein the rear end of each side wall of the protective section is respectively formed with a split corresponding to the front end of each side wall of the ball bearing, whereby when the inner slide rail is extended and detached from the outer slide rail, the ball bearing is driven and clamped in the splits.  
     
     
         20 . Guide structure for telescopic rail assembly as claimed in  claim 18 , wherein the rear end of each side wall of the protective section is respectively formed with a split corresponding to the front end of each side wall of the ball bearing, whereby when the inner slide rail is extended and detached from the outer slide rail, the ball bearing is driven and clamped in the splits.  
     
     
         21 . Guide structure for telescopic rail assembly as claimed in  claim 19 , wherein the split is a Y-shaped notch.  
     
     
         22 . Guide structure for telescopic rail assembly as claimed in  claim 20 , wherein the split is a Y-shaped notch.