Dual-purpose shoes and folding type pulley device thereof

Abstract

The invention discloses a folding type pulley device. The folding type pulley device comprises a front wheel frame, a rear wheel frame, a shell base, a linkage frame and a switch mechanism, wherein the switch mechanism comprises a locking movable shaft; a transmission front shaft, a middle fixed shaft and a transmission rear shaft are horizontally mounted at the front end, the middle end and the rear end of the linkage frame in parallel respectively; the linkage frame is provided with a closing clamping hole and a unfolding clamping hole which are matched with the locking movable shaft; a first rotary fixed shaft and a second rotary fixed shaft are horizontally mounted on the shell base in parallel; the shell base is further provided with a transverse limiting hole, a vertical limiting hole, a first arc-shaped limiting hole and a second arc-shaped limiting hole; a reset tension spring is arranged between the middle fixed shaft and the first rotary fixed shaft; the left end and the right end of the front wheel frame are connected with the first rotary fixed shaft and the transmission front shaft; and the left end and the right end of the rear wheel frame are connected with the second rotary fixed shaft and the transmission rear shaft. According to the folding type pulley device, the locking movable shaft can be switched between the closing clamping hole and the unfolding clamping hole through the switch mechanism, and the maintaining of the closing state and the unfolding state of the folding type pulley device can be realized, and the device is safe, stable and reliable.

Description

technical field [0001] The invention belongs to the technical field of footwear products, and in particular relates to a dual-purpose shoe and a foldable pulley device thereof, which can walk in a folded state and slide in an unfolded state. Background technique [0002] The dual-purpose shoes include a shoe sole with a pulley device, which can switch between sliding and walking working conditions by changing the different installation states of the pulley device on the shoe sole. Existing dual-purpose shoes generally include a front wheel frame positioned at the front of the sole and a rear wheel frame positioned at the rear of the sole. There are two clamping holes on the arm. When the swing arm is in place and unfolded in place, the two clamping holes are respectively engaged with the locking shaft on the control mechanism, and the locking shaft is generally pressed by the torsion spring. Keep the locking shaft engaged with the corresponding card hole. But this kind of ...

AI Technical Summary

Problems solved by technology

But this kind of dual-purpose shoes keeps the engagement of the locking shaft and the clamping hole by the action of the torsion spring, once the torsion spring fails or the compression effect becomes smaller, it will easily cause the front wheel frame and the rear wheel frame to shake, and even cause the front wheel frame and the rear wheel frame to shake. Safety accidents due to automatic sudden switching during use

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