摘要:
The invention involves a gearbox 1, especially for adjustment devices in motor vehicles, with a plastic worm drive 10. The invention provides that the worm drive 10 has an encircling, circular flat contact surface 27 perpendicular to the worm axle and a number of removal pockets 22 in the form of recesses that are interposed axially between contact surface 27 and the worm axle and at the same time arranged in a level 29 recessed to the level of contact surface 27, whereby an encircling bevel 23 is formed in the transition area from level 29 of removal pockets 22 to the level of the circular contact surface 27.
摘要:
The invention involves a gearbox, especially for adjustment devices in motor vehicles, with a plastic worm drive. The invention provides that the worm drive has an encircling, circular flat contact surface perpendicular to the worm axle and a number of removal pockets in the form of recesses that are interposed axially between contact surface and the worm axle and at the same time arranged in a level recessed to the level of contact surface, whereby an encircling bevel is formed in the transition area from level of removal pockets to the level of the circular contact surface.
摘要:
Drive for an adjustment device, comprising a worm wheel which has a globoid toothing with a central cylindrical section. The drive for an adjustment device, specifically, a seat adjustment device within a vehicle, has a spindle (5) and a gear mechanism (9) coupled thereto which has a drive worm (20) drivable by a motor (2). The drive worm (20) engages a worm wheel (40). The toothing of the worm wheel (40) has a central section with cylindrical toothing (Z), which section transitions on both sides into a globoid toothing (G) such that at least one complete annular surface remains on both ends of the worm wheel (40). A method according to the invention of fabricating this worm wheel provides for a cutter (60) which is moved vertically relative to the axis (A) of a worm wheel blank. Advantages: Elimination of thrust washers; improved acoustics, torque fluctuations and vibrations; simple fabrication; improved run-out of the end faces; bearing surfaces projecting beyond the addendum circle of the toothing possible; no ridging on the functional surfaces and thus elimination of a separate deburring procedure.
摘要:
A worm wheel including first toothing regions transitioning into and on either side of a second toothing region and a complete annular surface on both ends of the worm wheel. The first toothing regions may have a constant outer diameter and the second toothing region may be depressed relative to the first toothing region. The first toothing regions may be globoid toothing regions and the second toothing region may be a cylindrical toothing region.
摘要:
The invention concerns a gearing for an adjustment device, especially an automotive adjustment device. Included is a threaded spindle as well as a spindle nut sitting on the threaded spindle, while inside a housing of the gearing. On either side of the spindle nut, there is provided a bearing bush to mount the spindle nut inside the gearing housing, while at least one of the bearing bushes consists of flexible material and is clamped under prestressing between the gearing housing and the spindle nut.
摘要:
The invention relates to a drive for adjusting motor vehicle seats comprising a spindle (5) fixed to a first (4) of two rails (3, 4) which are adjustable with respect to each other with the aid of holding devices (60) arranged on the end of the spindle (5). A transmission (9) actuated by a motor (2) is placed on the second rail (3), According to id invention, the holding devices (60) comprise an external bowl-shaped supporting surface (66) in which each end of the spindle (5) is fixedly mounted, respectively. Said solution is more advantageous in comparison with conventional holding devices which are embodied in the form of flexible stamped parts, in particular the inventive holding devices exhibit a high resistance in the case of crash.
摘要:
The invention relates to a drive for adjusting motor vehicle seats comprising a spindle (5) fixed to a first (4) of two rails (3, 4) which are adjustable with respect to each other with the aid of holding devices (60) arranged on the end of the spindle (5). A transmission (9) actuated by a motor (2) is placed on the second rail (3), According to id invention, the holding devices (60) comprise an external bowl-shaped supporting surface (66) in which each end of the spindle (5) is fixedly mounted, respectively. Said solution is more advantageous in comparison with conventional holding devices which are embodied in the form of flexible stamped parts, in particular the inventive holding devices exhibit a high resistance in the case of crash.