Abstract: Disclosed are a connecting rod structure, a footboard device, and a vehicle including same. A first connecting rod includes a first end pivotally connected with a second seat through a first pivot shaft, and a second end hinged with a first end of a second connecting rod; a spring includes a first end pivotally connected with the second seat through a second pivot shaft, and a second end pivotally connected with the first connecting rod or the second connecting rod through a third pivot shaft; a distance between an axis of the first pivot shaft and an axis of the third pivot shaft is a first distance, and a distance between the axis of the first pivot shaft and an axis of the second pivot shaft is a second distance; and a sum of the first distance and a free length of the spring is greater than the second distance.

Abstract: An extendable and a retractable vehicle step may comprise one or more assemblies. An assembly may comprise a first support arm pivotably coupled to a second support arm for extending and retracting a vehicle step. The second support arm may pass through a sleeve that may support and/or guide the second support arm. The sleeve may be rotatable and/or may comprise one or more rollers that may facilitate movement of the second support arm.

Abstract: An extendable and a retractable vehicle step may comprise one or more assemblies. An assembly may comprise a first support arm pivotably coupled to a second support arm for extending and retracting a vehicle step. The second support arm may pass through a sleeve that may support and/or guide the second support arm. The sleeve may be rotatable and/or may comprise one or more rollers that may facilitate movement of the second support arm.

Abstract: Disclosed are a connecting rod structure, a footboard device, and a vehicle including same. A first connecting rod includes a first end pivotally connected with a second seat through a first pivot shaft, and a second end hinged with a first end of a second connecting rod; a spring includes a first end pivotally connected with the second seat through a second pivot shaft, and a second end pivotally connected with the first connecting rod or the second connecting rod through a third pivot shaft; a distance between an axis of the first pivot shaft and an axis of the third pivot shaft is a first distance, and a distance between the axis of the first pivot shaft and an axis of the second pivot shaft is a second distance; and a sum of the first distance and a free length of the spring is greater than the second distance.

Abstract: Disclosed are a rocker footboard device and a vehicle. The rocker footboard device includes a mounting seat, a rotary driving device, a first connecting rod, a second connecting rod, a sliding sleeve, and a footboard, where the rotary driving device is provided with a driving shaft, the sliding sleeve is pivotally connected with the mounting seat through a second pivot shaft, and a middle segment of the second connecting rod is slidably provided on the sliding sleeve. The rotary driving device drives the first connecting rod to rotate around the driving shaft, and the first connecting rod drives the second connecting rod to slide in the sliding sleeve. As a result, the second connecting rod is extended or retracted, thereby extending or retracting the footboard. Compared with the four-rod linkage mechanism, the rocker footboard device has the simpler structure, smaller size, lower manufacturing cost, and higher production efficiency.