Blocking component and shift mechanism

A shift mechanism, comprising:

• a housing;
• gear slots, formed on the housing and comprising several first gear slots, one second gear slot, and one third gear slot arranged in sequence;
• a shift lever assembly, rotatably connected to the housing;
• a shift limit pin, linked with the shift lever assembly for shifting among the plurality of gear slots;
• and
• a blocking component including:
• a body;
• a slidable member, slidably connected to the body and movable relative to the body, the slidable member having an inner end and an outer end, the inner end extending into an interior of the body and the outer end located outside the body;
• an elastic member, arranged between the body and the slidable member and configured to apply an elastic reset force to the slidable member so that the slidable member tends to move towards the outside of the body;
• and
• a blocking member, rotatably connected to the slidable member, the blocking member disposed at the outer end of the slidable member, and having a stop surface facing away from the body, a transition surface facing the body, and an abutting surface facing the slidable member, wherein when the blocking member is in a state in which no external force away from the body is applied to the transition surface, the abutting surface is in contact with a surface of the slidable member;
• wherein the body is fixedly arranged on the housing, the stop surface and the transition surface are located on a motion path of the shift limit pin, and the slidable member has a compressed state in which the slidable member moves towards an inner side of the body to a dead point position, and a reset state in which the slidable member moves towards an outer side of the body to a dead point position, wherein
• when the shift limit pin moves from any of the first gear slots towards the second gear slot until the shift limit pin is in contact with the stop surface and pushes the slidable member to move to the compressed state, the shift limit pin corresponds to the second gear slot and is staggered with the third gear slot;
• and
• when the shift limit pin enters the second gear slot, the slidable member is switched to the reset state through the elastic member.