Linear motor, shock absorber, suspension and vehicle

The utility model relates to a linear motor, shock absorber, suspension and vehicle, including stator subassembly and mover subassembly, mover subassembly includes guide shaft, stator subassembly includes the core shaft that sleeves the outside of guide shaft, linear motor also includes sensor, is used for detecting the displacement of guide shaft relative to the core shaft, and the sensor is used for detecting the displacement of guide shaft relative to the core shaft. The sensor is at least partially arranged between the mandrel and the guide shaft and at least partially arranged on the end face of the mandrel. According to the technical scheme, the sensor is at least partially arranged between the mandrel and the guide shaft, so that the interference of magnetic field change on the sensor can be reduced, and the accuracy of a measurement result is guaranteed. The sensor located on the end face of the mandrel enables lead connection to be convenient, arrangement of a wire outlet position is facilitated, connection of the sensor is facilitated, and the installation process is simplified. Meanwhile, the part of the sensor located on the end face of the mandrel is not in frictional contact with the guide shaft, abrasion failure caused by long-term use is prevented, and use safety of the sensor is guaranteed.