Automobile seat sliding rail device

Abstract

The invention provides an automobile seat sliding rail device, which comprises a sliding rail which is provided with a rack; a seat supporting seat which is arranged on the sliding rail in a sliding mode, and a containing cavity is formed in the seat supporting seat; an automobile seat which is fixedly mounted on the seat supporting seat; a driving motor which is arranged in the accommodating cavity and is fixedly connected with the seat supporting seat; an output shaft of the driving motor is a threaded screw rod; a transmission mechanism which is arranged in the accommodating cavity and is fixedly connected with the seat supporting seat; the transmission mechanism comprises a helical gear and a straight gear which are coaxial and integrated, the helical gear is meshed with the threaded lead screw, and the straight gear is meshed with the rack on the sliding rail. By arranging the self-locking transmission mechanism, the structure is simplified, the preparation weight is reduced, theproblem of response delay of unlocking / locking is avoided, and follow-up stopping is achieved; by arranging the zipper type surface sealing structure, potential safety hazards caused by foreign matterfalling into the sliding rail are avoided, and the situation that dust and foreign matter fall off and are difficult to clean is avoided; meanwhile, the appearance is free of seams and hidden objects, so that the quality is improved.

Description

technical field [0001] The invention relates to an automobile seat slide rail device. Background technique [0002] In the prior art, the electric long slide rail of the car seat realizes forward and backward sliding for two sets of relatively independent actuators: the unlock actuator and the drive actuator have separate motors respectively. When the unlocking is completed, the status is fed back to the control unit, and the control unit judges that the unlocking is successful and then outputs instructions to drive, so there will be a delay in the response of unlocking due to the cooperation of the two sets of mechanisms; in addition, because the existing locking scheme is to use the card If the claw is aligned with the locking window of the inner / outer rail, the window may not be aligned when the locking command is received, but it will continue to run to the locked position and then locked, so there will also be a delay in locking question. [0003] In the prior art, th...

AI Technical Summary

Problems solved by technology

[0004] 1. The motor needs to be matched with independent components, including the motor bracket and transmission rod, etc., the number of parts is large, and the curb weight is heavy;

[0005] 2. During the final assembly of the main engine factory, it is necessary to install the two slide rails and the motor bracket step by step. The process is complicated. If it is installed in an assembly, special equipment needs to be set;

[0006] 3. The arrangement of the above parts occupies the space under the seat, which is not good for the occupant's foot space, and cannot provide space for other functional styles (such as seat shoe boxes, etc.), nor can it flexibly adapt to the increasingly complex body floor environment;

[0007] 4. The power transmission path is far away, and there is a large energy loss during the long-stroke movement of the long slide rail, as well as vibrations and abnormal noises caused by running deviations

[0011] 1. The size of the cylindrical bracket connecting the seat and the slide rail is large, and the space layout performance is unfavorable

At the same time, it is connected with a cylindrical section, the rigidity of the whole chair is poor, and the connection part needs to be designed with corresponding reinforcements;

[0012] 2. The motor gear is arranged in the cover and needs to be designed with a fixed bracket, and the structure is more complicated

At the same time, the upper and lower gears are connected by a long linkage rod, which will be subjected to a very large shear force during a collision, and there is a structural defect of insufficient strength;

[0013] 3. Since the whole is composed of complex structures such as outer rails, inner rails, covers, motor bracket accessories in the covers, and connecting columns, its assembly is poor

[0016] 2. The zipper is installed on the carpet. When the carpet is stepped on, there will be deformation or displacement, which will cause the zipper to be deformed or twisted. When the slide rail runs back and forth, the zipper will not move smoothly or get stuck;

[0017] 3. A cover is added above the zipper, and there is a risk of friction and noise with the carpet when sliding back and forth, or the risk of squeezing and interfering with the passenger's feet;

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