Guide structure for blade module and vehicle-mounted device

The invention relates to a guide structure for a blade module. The guide structure comprises an upper guide rail, a lower guide rail, an upper guide piece and a lower guide piece, the upper guide piece and the lower guide piece are arranged on the two sides of the blade module, and the upper guide rail and the lower guide rail are arranged on the inner side of the groove type rack. The guide structure enables the blade module to be inserted and pulled in the groove type rack in a sliding mode, and in the process that the blade module is inserted into the groove type rack, the lower surface of the lower guide piece abuts against the upper surface of the guide block in a sliding mode so that the lower surface of the blade module can be kept to be separated from the bottom face of the groove type rack. The friction between the lower surface of the blade module and the bottom surface of the groove type rack is avoided, and the lower surface of the blade module is prevented from being damaged by shearing force in