Safe driver seat unit in a motor vehicle

A safe driver seat unit in a motor vehicle comprises:

• a seat, a supporting arrangement, a rail unit, a locking arrangement, sensors, an electric braker;
• a sensing switch connected with the sensors in parallel;
• a braking electromagnetic controller connected with an electromagnetic controller of the locking arrangement in parallel;
• with said parallel connections being connected with an electric battery and a power switch in series;
• the seat being provided on the rails;
• and in front of the seat are arranged springs;
• the locking arrangement being controlled by the electromagnetic controller;
• the springs being used to push the seat to move backwardly in an off-lock state of the seat;
• the electric braker comprises the braking electromagnetic controller and a braking control lever is provided to apply an automotive braking operation on the motor vehicle synchronized with the releasing operation by the lock arrangement when the sensor is deformed during a vehicle collision;
• the braking control lever being connected with a brake pedal operated by the driver;
• the sensors being arranged at parts of the motor vehicle prone to collision, each of which comprises a deformable thin wall metal pipe and a metal rod which inserts in and is insulated from the wall pipe;
• wherein:
• a supporting arrangement has an n-shaped frame;
• two supporting shafts respectively extend through the two side walls of the frame in parallel and mounted therein by nuts;
• at inner sides of the frame, backup plates, ball bearings and spring acting cylinders are respectively and serially arranged on each supporting shaft;
• the backup plates and the spring acting cylinders have outer diameters less than the inner diameter of outer rings of the ball bearings;
• on each of said two supporting shafts, an adjusting cylinder is arranged between each pair of spring acting cylinders;
• a thread is formed in one end of the adjusting cylinder to fit with an adjusting nut, a clamping nut of the adjusting nut, and a spacer;
• one end of the adjusting nut has a shape of a cylinder and a follower sheet being arranged between the tip of the cylindrical end and the spring acting cylinder;
• under the coaction of the nuts and the adjusting nut, inner rings of the ball bearings and side walls of the frame are fixedly mounted together;
• the rail unit having two parallel rails mounted on a fixed floor and extending longitudinally thereon;
• an upper cover being fixed on the rails with screws, and back and front plates being mounted at front and back ends of the rails, respectively;
• the rails being rectangular blocks;
• a longitudinal groove being formed in each rail;
• fourth ball bearings arranged in pairs in the longitudinal grooves;
• the width of the longitudinal grooves corresponding to the outer diameter of the outer ring of the ball bearings;
• at the back ends of the rails is pivoted a retaining hook having a head formed downwardly and backwardly;
• the upper cover having a hole formed correspondingly to a position of the hook for rotation of the hook;
• a hole being formed in a back plate for manual operation to release the seat locked by the hook;
• buffer cushions made of sponge material being arranged at back ends of the longitudinal grooves;
• the two ends of each spring being mounted on the front plate and the spring acting cylinders of the front supporting shaft respectively;
• a reset arrangement comprising a return bolt extending through the front plate and fit with the nut mounted at the inner side of the n-shaped frame;
• between a head of the bolt and an outer side of the front plate is fit with a nut on a threaded body of the bolt;
• the locking arrangement comprises the electromagnetic controller, a moving bar, a moving head, a locking member, an upper locking socket and a lower locking socket;
• the upper locking socket being mounted on a plate on the n-shaped frame;
• the lower locking socket being correspondingly arranged on the cover of the rails;
• in a normal state of the seat unit, the upper and lower locking sockets being in alignment;
• the locking member, having a shape correspondent to that of the center holes of the locking sockets, extends therein;
• the moving bar being fixedly connected with the moving head;
• the moving head being arranged in the electromagnetic controller, the moving bar extending in the center hole of the locking member, a flange being formed at an end of the moving bar, which extends out of the center hole of the locking member;
• the outer diameter of the flange being less than the least diameter of the center holes of the upper and lower locking sockets, and greater than that of the center hole of the locking member.