Automobile seat locking device

An automobile seat locking device is composed of a locking rack, screws, cover nuts, compression bolts, compression springs, locking toothed blocks, a rack and a manual control lever. Before adjustment, the manual control lever is uplifted to drive the left and right screws to rotate. Since the cover nuts are fixed and adopt left-handed threads and right-handed threads respectively, the left and right screws move outwards during rotation to drive the left and right locking toothed blocks to move outwards, so that the locking device is loosened, and the horizontal position is adjusted conveniently. After the horizontal position is adjusted, the manual control lever is loosened, the manual control lever is reset under the action of reset springs to drive the cover nuts to rotate and push in the reverse direction so that the locking toothed blocks are propelled inwards, the locking toothed blocks and the rack are meshed, and thus the purpose of locking is achieved. At the moment, in the absence of manual operation, the automobile seat locking device under the action of the compression springs cannot be unlocked automatically, so that tight locking is guaranteed. The automobile seat locking device has the advantages of simple structure, convenient adjustment, good safety performance and the like.