Automobile temperature sensor shell fastener

The utility model relates to the technical field of automobile element fixing, in particular to an automobile temperature sensor shell fastener which comprises a fastening mounting seat and a sensor shell, a gear is arranged on the sensor shell, two sliding blocks are arranged in the fastening mounting seat, racks are arranged on the sliding blocks, reset springs are arranged on the sliding blocks, and a limiting structure is arranged on the fastening mounting seat. Installation can be carried out by manually rotating the sensor shell, the sensor shell drives the rack to slide through the gear, the sliding block slides to enable the reset spring to extend, then the rack is limited through the limiting structure, only the limiting structure needs to be pressed to be separated from the rack during disassembly, and the rack slides in the opposite direction under the action of the reset spring. The rack drives the gear to enable the sensor shell to be screwed out of the installation position, disassembly equipmen