CN-121973699-A - Electric folding device for automobile frameless external rearview mirror

Abstract

The invention discloses an electric folding device of an automobile frameless external rearview mirror, which comprises a motor main structure assembly, a motor folding hydraulic assembly, a motor manual folding assembly, a motor folding driving assembly, a motor horizontal adjusting hydraulic assembly and a horizontal adjusting driving assembly, wherein the motor folding driving assembly conveys hydraulic oil to the motor folding hydraulic assembly through a gear pump assembly so as to drive the motor folding hydraulic assembly to rotate around a motor folding axis to fold a rearview mirror lens, the horizontal adjusting driving assembly conveys hydraulic oil to the motor horizontal adjusting hydraulic assembly through the gear pump assembly so as to drive the motor horizontal adjusting hydraulic assembly to rotate around a motor horizontal adjusting axis, and an output shaft of the motor horizontal adjusting hydraulic assembly drives a rearview mirror lens mounting seat to rotate through a torque transmission mechanism to realize the adjusting function of the rearview mirror lens. The invention can realize low-noise operation, and the control method of the whole vehicle is unchanged, so that the invention has better compatibility.

Inventors

• FU JIE
• Fu Xiuqi

Assignees

• 上海智坤汽车零部件有限公司

Dates

Publication Date

20260505

Application Date

20260326

Claims (10)

1. 1. The electric folding device for the automobile frameless outer rearview mirror comprises a motor main structure assembly, a motor folding hydraulic assembly, a motor manual folding assembly and a motor folding driving assembly, wherein hydraulic oil is conveyed to the motor folding hydraulic assembly through a gear pump assembly by the motor folding driving assembly, the motor folding hydraulic assembly is driven to rotate around a motor folding axis, and folding of a rearview mirror lens is achieved.
2. 2. The electric folding device for the automobile frameless outside rear view mirror according to claim 1, wherein the motor main structure component comprises a rear view mirror lens mounting seat, a bottom plate and a ball pressing plate, a ball is arranged between the rear view mirror lens mounting seat and a spindle plastic-coated piece, the ball pressing plate is fixedly connected with the rear view mirror lens mounting seat, and a roller is arranged between the ball pressing plate and the bottom plate.
3. 3. The electric folding device for the automobile frameless outside rear view mirror according to claim 2, wherein the balls are fixed by a ball retainer, and an elastic pressing plate for keeping smooth and reducing noise is provided above the rollers.
4. 4. The electric folding device for the automobile frameless outside rear view mirror according to claim 1, wherein the motor horizontal adjusting hydraulic assembly comprises a horizontal adjusting piston, a horizontal adjusting guide gear ring, a horizontal adjusting hydraulic cylinder, a steel pipe, a large cylinder cover and a small cylinder cover, the horizontal adjusting piston is arranged in the horizontal adjusting hydraulic cylinder, the horizontal adjusting piston is meshed with the horizontal adjusting guide gear ring through oblique meshing teeth arranged around the horizontal adjusting piston, and the horizontal adjusting piston moves under the driving of hydraulic oil and simultaneously rotates.
5. 5. The electric folding device for the automobile frameless outside rear view mirror according to claim 4, wherein the horizontal adjusting piston is sleeved on a steel pipe, and inner hexagonal holes for outputting torque are formed at two end parts of the steel pipe.
6. 6. The electric folding device for the automobile frameless exterior rear view mirror according to claim 1 or 4, wherein the torque transmission mechanism comprises a transmission shaft, a rotating shaft sleeve and a rear view mirror lens mounting seat driving gear, one end of the transmission shaft is connected with the output end of the horizontal adjustment driving assembly, the other end of the transmission shaft is connected with the rear view mirror lens mounting seat driving gear through a transmission tooth, the rear view mirror lens mounting seat driving gear is arranged on the rotating shaft, and the rotating shaft sleeve is sleeved at the end part of the rotating shaft.
7. 7. The electric folding device for the automobile frameless outside rear view mirror according to claim 1, wherein the horizontal adjustment driving assembly and the motor folding driving assembly comprise a driving motor, a planetary reducer assembly and a clutch assembly, the direct current motor drives the internal gear pump to move through the clutch assembly and the planetary reducer assembly, and the internal gear pump drives the piston assembly to move up and down through hydraulic oil.
8. 8. The electric folding device for the automobile frameless outside rear view mirror according to claim 1, wherein the clutch assembly comprises an input disc, an engagement disc, a film belleville spring, an output shaft and a primary sun gear, the input disc and the engagement disc are mutually engaged through engagement teeth, the film belleville spring is arranged on the outer side of the engagement disc, the center of the film belleville spring is clamped in a groove at the front end of the input disc, the periphery of the film belleville spring is pressed on the engagement disc and used for providing a certain pressure to press-engage the input disc and the engagement disc, when the resistance is smaller than a rated value, the torque is transmitted to the primary sun gear and the output shaft through the engagement disc, when the resistance is larger than the rated value, the axial thrust generated by the inclined surface of the engagement teeth pushes the film belleville spring to generate elastic deformation, the engagement teeth are disengaged, and the direct current motor idles.
9. 9. The electric folding device for the automobile frameless outside rear view mirror according to claim 1, wherein the motor folding driving assembly comprises a main shaft, a main shaft plastic-coated part, a piston, a hydraulic cylinder and a guide gear ring, the piston is arranged on the main shaft, the guide gear ring is arranged in the hydraulic cylinder, the piston is meshed with the main shaft and the guide gear ring through oblique T-shaped teeth, and the piston moves under the driving of hydraulic oil and drives the main shaft to rotate.
10. 10. The electric folding device for the automobile frameless outside rear view mirror according to claim 1, wherein the manual motor folding assembly comprises a riveting pipe, a base and a belleville spring, the base is arranged on the riveting pipe, the base and the spindle plastic-coated piece are matched with each other through an engagement inclined plane of a concave-convex structure, and the base and the spindle plastic-coated piece are engaged with each other under the action of the belleville spring.

Description

Electric folding device for automobile frameless external rearview mirror Technical Field The invention relates to an electric folding device for an automobile frameless external rearview mirror, and belongs to the field of automobile accessory control. Background The existing electric folding device for the automobile frameless external rearview mirror is shown in fig. 1, and the structure mainly has the following defects: (1) And excessive noise and abnormal sound are generated in the running process. The core of the existing electric folding device for the outer rearview mirror is that a direct-current motor drives a gear and a worm gear reducer to realize folding and up-and-down adjustment of the lens of the outer rearview mirror. In the running process of the device, the direct current motor and the speed reducing mechanism generate noise with larger decibels, and the noise frequency spectrum is often discontinuous and has sharp frequency bands. This disadvantage is further amplified by the manufacturing errors of the reduction mechanism. Under the environment that the existing new energy passenger car is popular, the defect becomes more protruding because the background noise of the whole car is far smaller than that of the traditional internal combustion engine passenger car. (2) The reliability is poor in low-temperature, high-temperature and humid environments. Because the plastic gear and the plastic shell are commonly applied to the speed reducing mechanism of the electric folding device of the existing external rearview mirror, under the environment of low temperature and high humidity, the plastic part generates dimensional change due to expansion with heat and contraction with cold and moisture absorption, and the change can change the matching precision of the gear and the worm gear, and bring the phenomena of larger friction force, excessive abrasion of moving parts and the like. These circumstances eventually cause problems such as accidental folding failure and abnormal folding noise when the exterior mirror is folded electrically. (3) The carrying capacity of the lens is insufficient. The module of the worm gear and the worm gear cannot be too large due to the limitation of the inner space of the outer rearview mirror, so that the strength of the worm gear teeth and the gear teeth is limited. The lens load of the existing folding motor is generally not more than 1000g, and the existing folding motor is not suitable for an external rearview mirror with a larger size. (4) The manufacturing difficulty is high and the manufacturing cost is high. Because the speed reducing mechanism of the electric folding device of the existing external rearview mirror is essentially a gear and a worm gear reducer, the manufacturing precision of the gear, the worm and the reduction box necessarily determines the performance and the service life of the assembly, and strict size control and a large number of high-precision manufacturing equipment and dies are required. Disclosure of Invention The invention aims to provide an electric folding device for an automobile frameless external rearview mirror, which can realize low-noise operation and larger output torque, has the size not exceeding that of the existing electric folding mechanism, has no change in the control method of the whole automobile and realizes better compatibility. The technical scheme includes that the electric folding device for the automobile frameless outer rearview mirror comprises a motor main structure assembly, a motor folding hydraulic assembly, a motor manual folding assembly and a motor folding driving assembly, wherein the motor folding driving assembly conveys hydraulic oil to the motor folding hydraulic assembly through a gear pump assembly so as to drive the motor folding hydraulic assembly to rotate around a motor folding axis to fold a rearview mirror lens, and meanwhile, the electric folding device also comprises a motor horizontal adjusting hydraulic assembly and a horizontal adjusting driving assembly, the horizontal adjusting driving assembly conveys hydraulic oil to the motor horizontal adjusting hydraulic assembly through the gear pump assembly so as to drive the motor horizontal adjusting hydraulic assembly to rotate around a motor horizontal adjusting axis, and an output shaft of the motor horizontal adjusting hydraulic assembly drives a rearview mirror lens mounting seat to rotate through a torque transmission mechanism to realize the adjusting function of the rearview mirror lens. Further, the motor main structure assembly comprises a rearview mirror lens mounting seat, a bottom plate and a ball pressing plate, a ball is arranged between the rearview mirror lens mounting seat and the spindle plastic wrapping piece, the ball pressing plate is fixedly connected with the rearview mirror lens mounting seat, and a roller is arranged between the ball pressing plate and the bottom plate. Further, the balls are fixed through