Locking device of motor vehicle lock, motor vehicle lock and motor vehicle

The utility model provides a locking device with a two-stage locking function, which comprises a spring bolt component and a locking part, the spring bolt component is provided with a full-locking position and a pre-locking position, the spring bolt component can be locked at the full-locking position based on the full-locking position, and the spring bolt component can be locked at the pre-locking position based on the pre-locking position; the pawl component can be meshed with the full-locking position and the pre-locking position of the spring bolt component; when the pawl component is meshed with the full locking position or the pre-locking position of the spring bolt component, the locking component restrains the pawl component so that the spring bolt component can be kept at the full locking position or the pre-locking position. The utility model further provides a motor vehicle lock and a motor vehicle. 本公开提供了具有双级锁定功能的锁定装置，包括：锁舌部件，锁舌部件具有全锁止位和预锁止位，基于全锁止位，锁舌部件能够被锁止在全锁止位置，基于预锁止位，锁舌部件能够被锁止在预锁止位置；棘爪部件，棘爪部件能