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Wiper drive for a window wiper system of a vehicle

A technology of driving device and wiper, which is applied in the direction of vehicle cleaning, vehicle maintenance, transportation and packaging, etc., can solve the problem of no joint transmission mechanism, etc.

Active Publication Date: 2016-04-27
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for reasons of cost and space, a huge change has taken place in this method, that is, the shaft of the window wiper is directly driven by a drive device, wherein the drive device only includes a worm gear mechanism and a reversible motor , that is to say there is no joint transmission mechanism
But at present, the limitations of this trend not only exist in the previously described reverse wiper equipment, but also mainly exist in the same direction wiper equipment with a large relationship between the height / width ratio of the window
In this technical background, the axial distance between the output shaft or the wiper shaft is very small, so that the wiper linkage no longer has the function of movement

Method used

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  • Wiper drive for a window wiper system of a vehicle
  • Wiper drive for a window wiper system of a vehicle
  • Wiper drive for a window wiper system of a vehicle

Examples

Experimental program
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Embodiment Construction

[0023] figure 1 A wiper drive 1 for a vehicle is shown, which comprises a controllable reversible electric motor and a reduction gear, which is designed as a worm gear. The worm gear comprises a worm 3 on the output shaft (not shown) of the reversible electric motor 2 and two worm wheels 4 and 5 meshing simultaneously with the worm 3 , which each form an output wheel of the worm gear. exist figure 1 Clockwise rotation of the worm 3, marked by the arrow in , causes the worm wheels 4 and 5 to move in opposite directions but fully synchronously as indicated by the other arrows. The worm wheels 4 and 5 are each mounted in a rotationally fixed manner on an output shaft 6 or 7 of the worm gear. A windshield wiper or its wiper arm, not shown here, is mounted on the output shaft 6 or 7 in a rotationally fixed manner. The wiper shaft can be formed in one piece with the corresponding output shaft 6 or 7 .

[0024] When the reversible motor 1 is controlled in a known manner, the wipe...

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Abstract

The drive (1) has worm wheels (4, 5) engaged with screws (3) and driving output shafts (6, 7) of windscreen wipers, where a reversible electric motor (2) and a transmission are equipped in the drive unit. The worm wheels are assembled in series along large sides of the screws such that the windscreen wipers are actuated in synchronism. The worm wheels are installed according to a plane symmetry with respect to longitudinal axis of the screws such that the windscreen wipers are actuated in opposition.

Description

technical field [0001] The invention relates to a wiper driving device, especially for a vehicle window wiper device, which comprises a reversible motor and a worm gear mechanism, and at least one window wiper can be directly driven by means of an output shaft of the worm gear mechanism. device. Background technique [0002] For example, DE 2803264 A1 discloses a windshield wiper system with a so-called wiper direct drive (WDA) of this type, ie without a wiper linkage. [0003] For a wiper system for a double-lever wiper zone, the known direct drive for the wiper can generally only be used for the two vehicles in connection with a separate wiper drive that is complicated to synchronize. Each of the window wipers. Especially in the case of reverse wiper systems with only one wiper drive, the present embodiment still requires, as before, an additional conventional articulation drive which cooperates with the swivel motor. The articulation drive (wiper linkage) usually inclu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60S1/18B60S1/08
CPCB60S1/166
Inventor M·韦勒A·邵姆
Owner ROBERT BOSCH GMBH