Stroller frame having a push-pull function

A stroller frame having a push-pull function, comprising:

• an upper frame;
• a lower supporting frame, the lower supporting frame and the upper frame being connected to each other through a frame joint, said lower supporting frame comprising a front leg (1) for connecting a front wheel set (11) and a rear leg (2) for connecting a rear wheel set (21), the front leg (1) being provided with a front leg sliding member (12) capable of sliding along the front leg (1), and an unlock/lock mechanism (6) is provided between the front leg sliding member (12) and the front leg (1) for locking or unlocking the front leg sliding member (12) relative to the front leg (1);
• and
• a push/pull rod assembly (7) being pivotally connected to the front leg sliding member (12) to enable the push/pull rod assembly (7) to be rotated backward or forward relative to the stroller frame, thereby enabling the push/pull rod assembly (7) to be used in an upper push configuration or a lower pull configuration;
• wherein said front leg sliding member (12) is a front leg sliding sleeve disposed on the front leg (1), said front leg sliding member (12) is rotatably connected to the push/pull rod assembly (7) through a push rod joint (13), said push rod joint (13) comprising a first joint block (131) disposed on the front leg sliding member (12) and a second joint block (132) disposed on the push/pull rod assembly (7) and rotatably connected to the first joint block (131);
• wherein said unlock/lock mechanism (6) comprises a plurality of locking holes (61) spaced apart on the front leg (1) and a locking block (62) slidably disposed in the first joint block (131) having a locking end penetrating the front leg sliding member (12) and capable of being inserted into the corresponding locking hole (61) to lock the front leg sliding member (12), with a locking resilient member (621) between said locking block (62) and the first joint block (131) capable of retaining the locking end of the locking block (62) in the locking hole (61);
• said unlock/lock mechanism also comprises an unlocking member movably disposed on the push/pull rod assembly (7) and an unlocking slider (63) slidably disposed in the second joint block (132) and connected to the unlocking member by an unlocking cord (64);
• said unlocking slider (63) being provided with an unlocking ramp (631) for driving the locking end of the locking block (62) out of the locking hole (61) when the unlocking slider (63) slides relative to the first joint block (131) to release a locking state of the front leg sliding member (12).