Locking mechanism, connecting mechanism, connecting assembly and working method of locking mechanism

Abstract

The invention discloses a locking mechanism, a connecting mechanism, a connecting assembly and a working method of the locking mechanism. The locking mechanism for being connected with a first connection part and a second connection part comprises a special-shaped shaft, a first gasket and a second gasket. The special-shaped shaft is sequentially divided into a first shaft part, a second shaft part and a third shaft part through a flange arranged onan outer wall of the special-shaped shaft along the circumferential direction and the step surface. The tail end of the first connection part and the head end of the second connection part are provided with through holes. The tail end of the first connection part, the first gasket, the head end of the second connection part and the second gasket are in clearance fit with each other and are sequentially sleeved on the second shaft part. A third gasket and a nut are sleeved on the third shaft part, and the third gasket is abutted against the step surface through a nut in threaded fit with the third shaft part . An outer wall of the second shaft part is respectively in clearance fit with an inner wall of the through hole at the tail end of the first connection part, an inner hole wall of the first gasket, an inner wall of the through hole at the head end of the second connection part and an inner hole wall of the second gasket. The first gasket and the second gasket are made of soft wear-resistant materials.

Description

technical field [0001] The invention relates to a connecting device, in particular to a locking mechanism, a connecting mechanism, a connecting assembly and a working method of the locking mechanism. Background technique [0002] The floor of a commercial vehicle is generally higher than 350mm from the ground. In order to facilitate passengers to get on and off the car, an automatic stepping device (telescopic step plate) is generally added to the sliding door. When the sliding door moves backward (door opening process) , The sliding door drives the step board to extend out. When the sliding door is fully opened, the step board is fully extended, and the occupant can get on and off the car conveniently through the automatic step board. [0003] figure 1 A schematic structural view of an automatic stepping device in the prior art is shown, as figure 1 As shown, the automatic stepping device comprises a first connecting part 21, a first connecting rod 23, a second connecting...

AI Technical Summary

Problems solved by technology

[0004] The problem of the above-mentioned automatic stepping device is: adopting the universal connector 22, first, the weight of the entire automatic stepping device is increased, the vibration inertia is large during the running of the vehicle, the noise is large and it is easy to be damaged; the second, the cost will be greatly increased; the second Three, not easy to disassemble

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