The present invention will be clearer from the following description when viewed together with the accompanying drawings, which show, for purpose of illustrations only, the preferred embodiment in accordance with the present invention.
Referring to
The fixed slide rail 10 is fixed to the surface of the cabinet and is provided with a receiving seat 101 on the drawer-receiving side thereof for receiving the drawer.
The movable slide rail 11 is movably disposed in the fixed rail 10 and is defined with a receiving groove 111 for receiving the receiving seat 101. At the end of the receiving groove 111 are formed a stopping member 112 and a pivot hole 113.
The positioning block 12 is positioned in the receiving seat 101 of the fixed slide rail 10 and is provided with a slide groove 121 perpendicular to the horizontal direction.
The first locking member 13 and the second locking member 14 are slideably disposed at both ends of the slide groove 121 of the positioning block 12, and at the end of the second locking member 14 is disposed a pivot member 141.
The pivot control member 15 is a V-shaped board located between the first and second locking members 13, 14 and is pivotally mounted on the pivot member 141 of the second locking member 14 through a pivot hole 151. A guiding block 152 is formed on the pivot control member 15 for cooperating with the first locking member 13 and includes a slant surface 1521, a flat surface 1522, and a control shaft 1523 on the surface of the guiding block 152. The pivot control member 15 is further provided with a confirmation rod 153 located at another extending end thereof facing the pulling-out direction of the drawer. A slant surface 1531 is formed on a side of the confirmation rod 153 and located in the direction of the movable slide rail 11.
The spring 16 is disposed in a groove of the first locking member 13 and biased between the first locking member 13 and the positioning block 12 for pushing the first locking member 13 toward the second locking member 14.
The control block assembly 17 includes a control block 170, a pivot shaft 171, and an elastic return member 173. One end of the control block 170 protrudes out of the end of the movable slide rail 11 and is fixed to the pivot hole 113 of the receiving groove 111 of the movable slide rail 11 by the pivot shaft 171. The control block 170 is provided with a slant guiding surface 172 (one of the embodiments of the guiding portion of the present invention) at the front edge thereof for cooperating with the control shaft 1523 of the pivot control member 15. The elastic return member 173 is positioned between a positioning groove 174 of the control block and the inner surface of the receiving groove 111 of the movable slide rail 11. A pushing block 175 is formed on the control block 170 for cooperating with the confirmation rod 153 of the control pivot member 15 and is located opposite the slant surface 1531 of the confirmation rod 153. The control block 170 is pushed against the stopping member 112 of the slide rail 11 by the elastic return member 173.
For a better understanding of the present invention, its operation and function, reference should be made to
The interlocking device for a drawer slide in accordance with the present invention is fixed on each of the drawers, and the interlocking device of the respective drawers utilizes the connecting rod A to connect the first and second locking members 13, 14.
In the normal state, the pivot control member 15 uses its flat surface 1522 to push the first locking member 13, enabling the first and second locking members 13, 14 to be slideably positioned in the pulling-out position, and the spring 16 is compressed. When closing the drawer, the control block 170 uses its guiding surface 172 to push the control shaft 1523 of the pivot control member 15, making the pivot control member 15 rotate outward, as shown in
When one of the drawers is pulled out, with reference to
And the non-normal operation state of the interlocking device for a drawer slide in accordance with the present invention is shown in
The control block 170 of the control block assembly 17 can exert its function of swinging and returning to start position. When the user pushes the drawers into the cabinet (the movable drawer 11 is pushed inward,) since the confirmation rod 153 of the pivot control member 15 will interfere with the pushing block 175 of the control block 170, so that the pushing block 175 of the control block 170 will slide smoothly along the slant surface 1531 of the confirmation rod 153, and the control block 170 will swing around the pivot shaft 171 to successfully surmount the confirmation rod 153, and meanwhile, the elastic return member 173 is fully compressed.
After the pushing block 175 of the control block 170 surmounts the confirmation rod 153, the elastic return member 173 will push the control block 170 back to the stopping member 112 of the movable slide rail 11. At this moment, the pushing block 175 of the control block 170 returns to the position at which to push the pivot control member 15, therefore, the function of the interlocking device will not be affected when the pivot control member 15 falls off.
The fixed slide rail 20 is fixed to the surface of the cabinet and is provided with a receiving seat 201 on the drawer-facing side thereof for receiving the drawer.
The movable slide rail 21 is movably disposed in the fixed rail 20 and is defined with a receiving groove 211 for receiving the receiving seat 201.
The positioning block 22 is positioned in the receiving seat 201 of the fixed slide rail 20 and is provided with a slide groove 221 perpendicular to the horizontal direction. The slide groove 221 has a first open end 2211 and a second open end 2212. Parallel guiding grooves 222 are formed at both sides of the slide groove 221, and two parallel stopping grooves 223 and 224 are defined at the bottom of the first and second open ends 2211, 2212. And a protruding pushing member 225 is formed at the first open end 2211 and located close to the stopping groove 223.
The first locking member 23 is slideably disposed in the slide groove 221 of the positioning block 22 and has two lateral guiding pieces 231 slideably received in the parallel guiding grooves 222. A limiting protrusion 232 at the bottom of the first locking member 23 is inserted in the stopping groove 223 of the positioning block 22. A through groove 233 is defined in the first locking member 23 and is located correspondingly to the limiting protrusion 232 and the pushing member 225 of the positioning block 22. A fixing groove 234 is defined at one end of the first locking member 23 facing the first open end 2211 for accommodation of the connecting rod A, and a slant guiding surface 235 is formed at the other end of the first locking member 23 facing the second open end 2212 and extends outward therefrom.
The second locking member 24 is slideably received in the slide groove 221 of the positioning block 22 and has two lateral guiding pieces 241 slideably received in the parallel guiding grooves 222. A limiting protrusion 242 at the bottom of the second locking member 24 is inserted in the stopping groove 224 of the positioning block 22. A pivot member 243 is formed on the end of the second locking member 24 facing the first open end 2211, and a fixing groove 244 is formed at the other end of the second locking member 24 facing the second open end 2212 for accommodation of the connecting rods A. A protruding engaging member 245 is formed between the pivot member 243 and the fixing groove 244 of the second locking member 24. The engaging member 245 is a square-pillar-shaped structure and is located in the front edge of the second locking member 24 facing the sliding direction thereof.
The pivot control member 25 is a V-shaped board located between the first and second locking members 23, 24 and is pivotally mounted on the pivot member 243 of the second locking member 24 through a pivot hole 251. A guiding block 252 is formed on the pivot control member 25 for cooperating with the slant guiding surface 235 of the first locking member 23 and includes a slant surface 2521, a flat surface 2522, and a control shaft 253 on the surface of the guiding block 252. The pivot control member 25 is further provided with a confirmation rod 254 located at another extending end thereof facing the pulling-out direction of the drawer.
The spring 26 is disposed in the through groove 233 of the first locking member 23 and biased between the positioning protrusion 232 of the first locking member 23 and the pushing member 225 of the positioning block 22 for pushing the first locking member 23 toward the second open end 2212 of the positioning block 22.
The control block 27 is disposed in the receiving groove 211 of the moveable slide rail 21 and is defined with a L-shaped guiding slot 271 (one of the embodiments of the guiding portion of the present invention) for cooperating with the control shaft 253 of the pivot control member 25. The L-shaped guiding slot 271 is formed at the front portion of the control block 27 and includes an open end 2711, a release portion 2712 and a pulling and engaging portion 2713. The control block 27 is defined with an engaging slot 272 located correspondingly to the engaging member 245 of the second locking member 24 and further provided with a pushing block 273 for pushing the confirmation rod 254 of the pivot control member 25, and the pushing block 273 is formed opposite the L-shaped guiding slot 271 and located in the pulling-out direction of the drawer.
For a better understanding of the present invention, its operation and function, reference should be made to
The interlocking device for a drawer slide in accordance with the present invention is fixed on each of the drawers, and the interlocking device of the respective drawers utilizes the connecting rod A to connect the first and second locking members 23, 24.
When all the drawers are closed, as shown in
When an upper drawer is pulled out, as shown in
It is noted that the pivot control member 25 is a V-shaped board and is provided with a confirmation rod 254 located at another extending end thereof facing the pulling-out direction of the drawer. Before the control shaft 253 of the pivot control member 25 is pulled to the optimum positioning position by the L-shaped guiding slot 271 of the control block 27, the pushing block 273 of the control block 27 will push the confirmation rod 254 of the pivot control member 25 in the pulling-out direction to the positioning position, so that the first locking member 23 extends outward to its positioning position, and meanwhile, the spring 26 also pushes the pivot control member 25 to its positioning position.
When a lower drawer is pulled out, as shown in
It is important that the present invention is simple in structure and uses the drawer to move a control block on the slide rail, and then the guiding portion (the L-shaped guiding slot or the slant guiding surface) and the pushing block of the control block can push the pivot control member to move, so that the first and second locking members of the interlocking device of the respective drawers arc interlocked. Therefore, the present invention has fewer components than the conventional structure and simple.
While we have shown and described various embodiments in accordance with the present invention, it is clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.
Number | Date | Country | Kind |
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095135003 | Sep 2006 | TW | national |