Locking mechanism

Abstract

The invention relates to the technical field of automobiles, and discloses a locking mechanism which comprises a nut assembly and a bolt assembly. The nut assembly comprises a nut and a fixing sleeve, and the nut can move relative to the fixing sleeve. The bolt assembly comprises a shell, a bolt and a transmission part, the bolt and the transmission part are arranged in the shell, and the bolt can abut against the nut so that the nut can move relative to the fixing sleeve and the bolt can move relative to the shell. The transmission part is arranged on the bolt in a sleeving mode, the shell is used for limiting rotation of the transmission part at the locking position, the transmission part can move in the axial direction of the bolt to leave the locking position, and the transmission part leaving the locking position can drive the bolt to rotate so that the bolt can be in threaded connection with the nut; an elastic piece is further included and arranged on the bolt in a sleeving mode, one end of the elastic piece abuts against a limiting protrusion on the bolt, and the other end of the elastic piece abuts against the transmission piece. In this way, the bolt abuts against the nut, the position of the nut is adjusted, then the nut and the bolt are in threaded connection through coaxial rotation of the transmission piece and the bolt, and high-precision rapid replacement of the battery pack is achieved.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a locking mechanism. Background technique [0002] With the development of my country's new energy electric vehicle technology, users have higher requirements for the cruising range and charging time of electric vehicles. However, due to the battery system and battery characteristics, it is currently impossible to charge in a short period of time to reach When the battery fast charging technology cannot be further improved due to the large cruising range, it becomes particularly important for electric vehicles to quickly replace the battery pack. [0003] At present, several locking mechanisms commonly used in battery pack replacement solutions mainly include snap-on, tension-on, and screw-on, but the above-mentioned locking mechanisms still have the following defects during use, for example, the snap-on locking mechanism wears out during use Larger, easy to get stuck, and re...

AI Technical Summary

Problems solved by technology

[0002] With the development of my country's new energy electric vehicle technology, users have higher requirements for the cruising range and charging time of electric vehicles, but due to the battery system and battery characteristics, it is currently impossible to charge in a short period of time to reach Larger cruising range, when the battery fast charging technology cannot be further improved, it becomes particularly important for electric vehicles to quickly replace the battery pack

[0003] At present, several locking mechanisms commonly used in battery pack replacement solutions mainly include snap-on, tension-on, and screw-on, but the above-mentioned locking mechanisms still have the following defects during use, for example, the snap-on locking mechanism wears out during use Larger, easy to get stuck, and requires frequent manual maintenance; due to the large number of parts and complex structure, the tension-type locking mechanism has high requirements for battery pack matching, poor compatibility, and high unit cost; while the screw-type lock The compatibility of the stop mechanism is poor, there is no tolerance capability, and the parts are easily damaged and the service life is short

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