Lumbar vertebrae device of alleviateing burden for car seat

The utility model provides a lumbar vertebrae device of alleviateing burden for car seat, sets up on car seat, including top support frame, hasp, cassette tape, the last fixed cassette tape contractor that is provided with of top support frame, cassette tape one end sets up in the cassette tape contractor, and the other end passes through the hasp to be fixed on car seat's backrest. Lumbar vertebrae device of alleviateing burden for car seat, operating condition are exactly the occupation of driving, for example taxi driver, truck man etc. Top support frame fixes in user's the lumbar vertebrae upper portion following position of chest, and the bottom suspension strut is fixed in the following os pelvicum position of lumbar vertebrae, and top support frame passes through the hasp and connects the trip, the trip colludes on the hand horizontal pole of bus. Through the support of top support frame to the waist, the cassette tape lifts top support frame, opens truck more than the waist to the pressure decompositi