A spring pressure device set for a slide rail, the slide rail including a first rail and a second rail, the second rail including an activating member, said spring pressure device set comprising:
- a base member formed in one piece, said base member being adapted to be fixed on the first rail, and comprising a stroke space, a first guide rail located in said stroke space, a locking block with a locking point located on one side thereof, a stroke path formed on said first guide rail and a step path formed around said locking block, said stroke path continuing said step path;
- an elastic member, said elastic member having one end thereof fixed on said base member;
- a slider located in said base member and connected to an opposite end of said elastic member, said slider being slidable with a lower part thereof along said first guide rail in said stroke space;
- and
- a control rod formed of an elastic material in one piece and pivotally connected to said slider to move with said slider, said control rod comprising a hook portion with a curved surface at a tail end thereof so that said hook portion has elastic recovery force;
- wherein said hook portion is movable from said stroke path to said step path, and when said hook portion deviates from said step path, the elastic restoring force of said hook portion rebounds said hook portion to said step path;
- wherein a front end of said control rod has a pivot hook pivoted to a pivot hole on said slider;
- wherein said step path comprises a lead-in slope, a first guide slope, a second guide slope and a lead-out slope so configured that when said hook portion passes through said lead-in slope to said first guide slope, said hook portion is locked at said locking point;
- when said hook portion passes through said second guide slope to said lead-out slope, said hook portion is unlocked from said locking point;
- wherein said lead-in slope, said first guide slope, said second guide slope and said lead-out slope all have a transverse low section surface, a vertical high section surface, and a slope formed between said transverse low section surface and said vertical high section surface, so that a step difference is formed between said lead-in slope and said first guide slope, a step difference is formed between said first guide slope and said second guide slope, and a step difference is formed between said second guide slope and said lead-out slope;
- wherein said slider comprises a groove located on an upper part thereof, an elastic rib formed on a bottom of said groove, and a barb formed on one side of said groove, said elastic rib having an end surface extended and bent below said barb;
- wherein, when the second rail is received in the first rail, said slider is adapted to be driven by the activating member, and said hook portion is locked at said locking point;
- wherein, when the second rail is pushed, said slider is pushed by the activating member, and said hook portion is unlocked at said locking point, causing said elastic member to pop said slider out of the second rail;
- wherein said groove is facing upward and the activating member is positioned:
- when the second rail is forcefully pulled on the first rail, the activating member abuts said elastic rib, and said elastic rib is displaced so that said barb is capable of hooking the activating member;
- and
- wherein said base member further comprises a second guide rail parallel to said first guide rail, said slider further comprising a sliding seat located on the lower part thereof, said sliding seat comprising a sliding surface on a top side thereof, and an inclined surface connected to and oblique to said sliding surface, said sliding surface and said inclined surface being located below said second guide rail for cooperatively limiting an angle of rotation of said sliding seat.