A two-step step stool includes a primary stool and a secondary stool. The primary stool includes a primary supporting plate and a primary pedal hinged with a top of the primary supporting plate. The secondary stool includes a secondary supporting plate and a secondary pedal hinged with a top of the secondary supporting plate. The secondary pedal is higher than the primary pedal. A middle plate is arranged between the primary stool and the secondary stool and is respectively hinged with the primary pedal and the secondary pedal. A linkage mechanism capable of folding the primary stool and the secondary stool synchronously is further arranged between the primary stool and the secondary stool. The two-step step stool can be drawn close towards the middle plate when being folded by hinging the primary pedal with the middle plate and hinging the secondary pedal with the middle plate.

A ladder is provided. The ladder includes a ladder frame, wherein on the ladder frame foot boards are disposed, wherein the ladder frame includes a front bracket and a back bracket; the front bracket is provided with fixing joints; a handrail collapsible by sliding or overturning is disposed on the fixing joints; collapsing/unfolding structures for collapsing or unfolding the handrail are disposed between the fixing joints and the handrail; and after the ladder frame and the handrail are collapsed, a footprint of the handrail in a thickness direction is not more than a footprint of the fixing joints. By disposing the fixing joints to mount the handrail for providing a clearance space to collapse the handrail, the handrail is collapsed, by sliding or overturning, to an inner side of the ladder frame without increasing a footprint of a wholly collapsed ladder.

A collapsible ladder includes a first pair of legs and a second pair of legs, each of the first pair of legs and the second pair of legs is rotatably joined near tops thereof; a plurality of steps extending between one of the first pair of legs and one of the second pair of legs, each of the steps rotatably jointed about a mid-point thereof; a first vertical spar slidably connected to each of the steps near the mid-points thereof; a plurality of supports extending between a second one of the first pair of legs and a second one of the second pair of legs, each of the supports rotatably jointly about a mid-point thereof; and a second vertical spar slidably connected to each of the supports near the mid-points thereof. This configuration allows the ladder to be collapsed by raising the first and second vertical spars causing the steps and supports to fold about their mid-points permitting the first and second pair of legs to be generally folded/collapsed into a single column.

A folding ladder comprising two ladder frames rotatably connected by two oppositely arranged frame hinge assemblies at the top, the ladder frames each including two parallel ladder legs, and several ladder frames; the frame hinge assembly is provided with a balancing member, one end of the balancing member is hinged with one frame hinge assembly, and the other end is connected with another frame hinge assembly in a locking manner; each step comprises hinged left and right step sections, the tops of the two ends of each step are is with snap-fit notches, so that the steps do not collide with the legs during the rotation process, the steps are in contact with the legs in both the unfolded and folded states, which makes the overall structure compact and has better shockproof effect, which is convenient for the transportation of the whole folding ladder.

A collapsible ladder includes a first pair of legs and a second pair of legs, each of the first pair of legs and the second pair of legs is rotatably joined near tops thereof; a plurality of steps extending between one of the first pair of legs and one of the second pair of legs, each of the steps rotatably jointed about a mid-point thereof; a first vertical spar slidably connected to each of the steps near the mid-points thereof; a plurality of supports extending between a second one of the first pair of legs and a second one of the second pair of legs, each of the supports rotatably jointly about a mid-point thereof; and a second vertical spar slidably connected to each of the supports near the mid-points thereof. This configuration allows the ladder to be collapsed by raising the first and second vertical spars causing the steps and supports to fold about their mid-points permitting the first and second pair of legs to be generally folded/collapsed into a single column.

A horizontal extendable ladder is revealed. The horizontally extendable ladder includes at least three rails and a plurality of rungs disposed between the two adjacent rails. The three rails are set vertically while the rungs are equally spaced and arranged horizontally between the two adjacent rails from top to bottom to form at least two ladder frames. Each of two ends of the rung is arranged with a first pivot shaft that is pivotally connected to the rail. Thereby the rungs can be rotated synchronously between the two adjacent rails for horizontal retraction or extension of the ladder. The ladder is used more efficiently.

A deformable assembling rack includes: two vertical posts having one lateral surface thereof formed with a concave slot, and plural connection rod sets connected between the vertical posts and respectively having a first connection rod and a second connection rod, wherein the first and the second connection rods are respectively formed with a first end pivoted in the concave slots, and respectively formed with a second end disposed with a pivotal part for the purpose of pivoting, the first connection rod and the second connection rods can be displaced towards a preset direction to a folded location for being adjacent to inner wall surfaces of the vertical posts, or to be displaced to an unfolded location for being perpendicular to the inner wall surfaces of the vertical posts, thereby being able to be folded for forming as a rod body or unfolded for being in an operating status.

A ladder system for a vehicle. The ladder system comprises a mounting bar having a channel extending along a length of the mounting bar. The ladder system includes a pair of securing members securing the mounting bar to a roof rack. The ladder system includes a ladder comprising a first side rail, a second side rail, a first slidable member configured to slide within the first side rail, a second slidable member configured to slide within the second side rail, a coupler secured to the first side rail and pivotably coupling the first side rail to the channel, and a hook coupled to the second side rail and hooking the second side rail to the mounting bar when the ladder is in a use configuration.

A two-step step stool includes a primary stool and a secondary stool. The primary stool includes a primary supporting plate and a primary pedal hinged with a top of the primary supporting plate. The secondary stool includes a secondary supporting plate and a secondary pedal hinged with a top of the secondary supporting plate. The secondary pedal is higher than the primary pedal. A middle plate is arranged between the primary stool and the secondary stool and is respectively hinged with the primary pedal and the secondary pedal. A linkage mechanism capable of folding the primary stool and the secondary stool synchronously is further arranged between the primary stool and the secondary stool. The two-step step stool can be drawn close towards the middle plate when being folded by hinging the primary pedal with the middle plate and hinging the secondary pedal with the middle plate.