TH40202B - Power folding exterior mirrors - Google Patents

Abstract

DC60 (16/10/44) This invention presents an electrically folding side mirror that lifts in response to variations in the assembly of the frame and motor components, and achieves stable and smooth horizontal worm gear rotation. The underside of the outer plate 50 is designed with horizontal worm gear support 76, 78, where the horizontal worm gear support 76, 78 has notch 86. The shafts 36a, 36b of horizontal worm gear 36 are pressed through notch 86 into the gap in the shaft support 84 of the horizontal worm gear support 76, 78, by deflecting the horizontal worm gear support 76, 78 so that the horizontal worm gear 36 is supported. The horizontal worm gear support 76, 78, located on the inner bottom of box 28 of frame 14, is designed with deflection limiters 80, 82. Under the condition that outer plate 50 is assembled onto frame 14, deflection limiters 80, 82 clamp the horizontal worm gear support 76, 78 laterally to limit the deflection of the horizontal worm gear support 76, 78. Figure 1 shows the selected figure. This invention presents an electrically folding rearview mirror that is lifted to accommodate the effects of variations in the assembly of the frame and motor components, and achieves stable and smooth rotation of the horizontal worm gear. The bottom of outer plate 50 is designed with horizontal worm gear support 76, 78, where the deflection limiters... The horizontal worm screws 76 and 78 have notches 86, while the shafts 36a and 36b of the horizontal worm screw 36 are pressed through notch 86 into the space in the shaft support section 84 of the horizontal worm screw 76 and 78 shaft support section. This causes the horizontal worm screw 76 and 78 shaft support section to deflect so that the horizontal worm screw 36 is supported by the horizontal worm screw 76 and 78 shaft support section. The inner bottom of box 28 of frame 14 is designed with deflection limiters 80 and 82. Under the condition that the outer shaft 50 is assembled into frame 14, the deflection limiters 80 and 82 clamp the horizontal worm screw 76 and 78 shaft support section laterally to limit the deflection of the section. The horizontal worm gear support brackets, 76 and 78, are selected from the images shown in Figure 1.

Claims (7)

1. Electrically folding rearview mirrors consist of a frame supported by a shaft on the outside of the vehicle, allowing it to rotate freely. The mirror housing is fitted into this frame, which houses a motor and gear reducer. The motor's force is transmitted through the gear reducer to the shaft, causing the frame to rotate around its axis. This rotation acts as the mechanism for moving the mirror to its original or folded position. The frame includes a motor mounting bracket and a gear reducer with a horizontal threaded screw. Either the frame or the motor mounting bracket is designed with a support for the horizontal threaded screw, enclosing the outer surface of the screw shaft for support. A notch in this support bracket is cut into the surrounding area, connecting to a gap in the support bracket. The width of this notch... It will be narrower than the diameter of the horizontal worm screw shaft. The horizontal worm screw shaft will be pushed into the gap in the shaft support of the horizontal worm screw shaft support through the notch. This is done by causing the horizontal worm screw shaft support to deflect in the direction of the opening of the notch, so that the horizontal worm screw is supported by the support. In addition, the remaining frame or motor mounting component will be designed with a deflection limiter that contacts the horizontal worm screw shaft support to limit the deflection of the support in the direction of the opening of the notch, under the condition that the motor mounting component is mounted to the frame. 2. For the electrically folding rearview mirrors under Requisition 1, the horizontal worm gear support and the deflection limiter are positioned to face each other in a contacting direction between the motor mounting assembly and the frame. This contact between the motor mounting assembly and the frame mounting position causes the deflection limiter to contact the horizontal worm gear support, thereby limiting the deflection of the horizontal worm gear support in the direction of the notch opening. 3. The electrically folding rearview mirrors under claim 1 or 2 have a notch located on the horizontal worm gear support on the side facing the frame or on the remaining motor mounting part. The deflection limiter clamps the horizontal worm gear support on both sides to limit deflection in the direction of the opening of the notch. 4. In any of the electrically folding rearview mirrors under claims 1-3, the horizontal worm gear support is made of a material with better friction resistance and wear resistance than the deflection limiter, and the deflection limiter is made of a material with higher hardness than the horizontal worm gear support. 5. For any electrically folding rearview mirror under claims 1-4, the horizontal worm gear support element shall be molded from synthetic plastic as a single piece with the frame or the motor mounting element; the deflection limiter shall be molded from synthetic plastic as a single piece with the frame or the remaining motor mounting element. 6. Any one of the electrically folding side mirrors under claims 1-5 has a cross-sectional shape perpendicular to the axis of the gap in the horizontal worm gear support section, and such notch is located within a range less than 180 degrees of the circumference of such circle. 7. In any of the electrically folding rearview mirrors under claims 1-6, the motor mounting component shall act as a housing containing the shaft and gear. The motor shall be mounted on the outside of this housing, and the motor's shaft shall be passed through the housing into the box.