The invention provides a safety belt lock catch, a seat and a vehicle. The safety belt lock catch comprises a lock catch
assembly, a connecting
rope, a first force limiting
assembly, a second force limiting
assembly and a positioning assembly. The lock catch assembly is connected with the first end of the connecting
rope. A lock tongue of a safety belt can be inserted into the lock catch assembly. The second end of the connecting
rope is wound around the first force limiting assembly, and the first force limiting assembly is movably connected to the positioning assembly. The second force limiting assembly is fixedly connected to the positioning assembly and connected with the first force limiting assembly. The connecting rope can drive the first force limiting assembly to rotate in the first direction under the action of the lock catch assembly, and the second force limiting assembly is driven to conduct
torsional deformation in the first direction along with rotation of the first force limiting assembly, so that force limiting on the safety belt lock catch is achieved. The positioning assembly can be fixedly connected with the seat so as to support the first force limiting assembly and the second force limiting assembly.