A car seat slide rail device

Abstract

The invention provides a car seat slide rail device, which comprises: a slide rail, on which a rack is arranged; a seat support seat, which is slidably arranged on the slide rail, and has an accommodating cavity inside; a car seat The chair is fixedly installed on the seat support base; the drive motor is arranged in the accommodation cavity and is fixedly connected with the seat support base; the output shaft of the drive motor is a threaded screw; the transmission mechanism is arranged in the accommodation cavity , and is fixedly connected with the seat support base; the transmission mechanism includes a coaxial helical gear and a spur gear, the helical gear meshes with the threaded screw, and the spur gear meshes with the rack on the slide rail. The present invention not only simplifies the structure and reduces the curb weight by setting the self-locking transmission mechanism, but also avoids the problem of response delay of unlocking / locking, and realizes follow-up stop; the setting of the zipper type surface sealing structure prevents foreign objects from dropping The potential safety hazards caused by entering the slide rails are avoided, and dust and debris are prevented from falling and difficult to clean; at the same time, there are no seams or hidden objects on the outside, which improves the sense of quality.

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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