The cart comprises a cart body and a pawl mechanism, wheels are arranged at the bottom of the cart body, the cart body can move front and back in the first direction through the wheels, ratchet wheels are fixedly arranged on the wheels, a sliding groove is formed in the cart body, the two ends of the sliding groove are the first end and the second end respectively, and a first limiting part is arranged at the second end; the pawl mechanism comprises a pawl assembly and a first elastic piece, the pawl assembly is movably connected to the vehicle body and comprises a movable part and a pawl part, the movable part can slide along the sliding groove, and the pawl part is arranged on the rear side of the ratchet wheel and can be inserted into the tooth groove of the ratchet wheel to limit rotation of the ratchet wheel; the first elastic piece is used for providing elastic force for keeping the movable part at the first end; when the movable part is located at the first end, the pawl part is inserted into a tooth groove of the ratchet wheel, the ratchet wheel can only rotate in one direction, and when the movable part is located at the second end, the pawl part is separated from the ratchet wheel. According to the cart, backward rotation of the wheels can be effectively braked, so that the phenomenon of cart sliding in the uphill process is prevented, and the safety of the cart is improved.
本申请公开了一种推车,包括:车体和棘爪机构,车体的底部设有车轮,车体通过车轮可沿第一方向前后移动,车轮固设有棘轮,车体设有滑槽,滑槽的两端分别为第一端和第二端,第二端设有第一限位部;棘爪机构包括有棘爪组件和第一弹性件,棘爪组件活动连接于车体,棘爪组件包括有活动部和棘爪部,活动部可沿滑槽滑动,棘爪部设于棘轮的后侧且可插入棘轮的齿槽,以限制棘轮的转动,第一弹性件用于提供使活动部保持在第一端的弹性力;其中,当活动部位于第一端时,棘爪部插入棘轮的齿槽中,棘轮仅能单向转动,当活动部位于第二端时,棘爪部脱离棘轮。本申请的推车能够有效制动车轮后转,从而防止在上坡过程中出现溜车的现象,提高推车的安全性。
Trolley
一种推车
2024-02-13
Patent
Electronic Resource
Chinese
IPC: | B62B Von Hand bewegte Fahrzeuge, z.B. Handkarren oder Kinderwagen , HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS |