US 12,312,864 B1
Connecting rod stabilizing structure for herringbone ladder
Qiulan Hu, Zhejiang (CN)
Filed by Qiulan Hu, Zhejiang (CN)
Filed on Jan. 15, 2025, as Appl. No. 19/022,168.
Claims priority of application No. 202411975243.7 (CN), filed on Dec. 30, 2024.
Int. Cl. E06C 7/42 (2006.01); E06C 1/18 (2006.01); E06C 7/50 (2006.01)
CPC E06C 7/423 (2013.01) [E06C 1/18 (2013.01); E06C 7/50 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A connecting rod stabilizing structure for a herringbone ladder, comprising a transverse tube (2) and two connecting rod structures, wherein the two connecting rod structures are both hinged between two ladder bodies of the herringbone ladder and are symmetrically arranged front and back, the connecting rod structure comprises a first connecting rod (4) and a second connecting rod (5), ends of the first connecting rod (4) and the second connecting rod (5) which are away from each other are respectively hinged to the two ladder bodies of the herringbone ladder, the other end of the first connecting rod (4) is fixedly sleeved with a connecting sleeve (6), a latch stick (7) is slidably connected in the connecting sleeve (6), one end of the latch stick (7) passes through the first connecting rod (4) and passes through and out of the connecting sleeve (6) in a sliding connection manner and its cross section is provided to be arc-shaped, the other end of the second connecting rod (5) is rotatably connected to the connecting sleeve (6) and the first connecting rod (4) through a pin, the second connecting rod (5) is provided with an insertion hole (8) for inserting the end of the latch stick (7) that passes through and out of the connecting sleeve (6), the transverse tube (2) is connected between the two connecting sleeves (6) and is in communication with both connecting sleeves (6), and a driving structure is provided in the transverse tube (2) and the two connecting sleeves (6) for driving the two latch sticks (7) to retract into the connecting sleeves (6) at the same time and generating rebound forces on the latch sticks (7).