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Gear motor for motor vehicle wiping system

A technology for geared motors and motor vehicles, which is applied in vehicle cleaning, vehicle maintenance, and vehicle parts, and can solve problems such as difficult welding, defective operation of geared motors, and defective bearings

Inactive Publication Date: 2018-12-11
VALEO SYST DESSUYAGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, this solution has a number of disadvantages, since not only are the bearings often made of steel and are therefore difficult to weld, but the increased heat required for welding marks the rolling elements on the rings
[0012] Markings of this type inevitably lead to defective operation of the bearings and thus of the gear motor

Method used

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  • Gear motor for motor vehicle wiping system
  • Gear motor for motor vehicle wiping system
  • Gear motor for motor vehicle wiping system

Examples

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Embodiment Construction

[0029] gear motor

[0030] The invention relates to a geared motor for a wiper system of a motor vehicle, reference number 1 .

[0031] The gear motor comprises a preferably brushless DC motor 2 and a reduction mechanism 3 .

[0032] Such as figure 1 As shown, the electric motor 2 includes a rotor 4 and a stator 5 .

[0033] The stator 5 includes a plurality of electromagnetically excited coils 6 of the rotor 4 .

[0034] The rotor 4 comprises multi-pole magnets 7 fitted to be driven by a rotational movement about an axis of rotation referenced L. As shown in FIG.

[0035] The electric motor 2 is constructed such that the rotor 4 turns in the stator 5 , which causes the rotation of a shaft 8 of the mechanism 3 , called the motor shaft 8 integral with the rotor 4 .

[0036] The motor shaft 8 extends according to the axis L of rotation.

[0037] The motor shaft 8 includes a threaded portion 9 fitted so as to mesh with a gear 10 of the reduction mechanism 3 .

[0038] The...

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Abstract

The invention relates to a gear motor for a motor vehicle wiper system, comprising a direct current electric motor, which in particular is brushless, the electric motor (2) comprising a stator (4) anda rotor (5), the stator (4) comprising a plurality of coils (6) for electromagnetic excitation of the rotor (5), and the rotor (5) comprising a magnet which is fitted in order to be driven with a movement of rotation around an axis of rotation, the gear motor (1) also comprising a rotation shaft (8), known as the motor shaft, which is configured to be rotated by the rotor (4), the gear motor (1)comprising a bearing (20) for guiding in rotation of the motor shaft (8), and a brace (25) for axial blocking of the bearing (20) added onto the motor shaft, the brace (25) being secured on the motorshaft (8).

Description

technical field [0001] The invention relates to a gear motor for a motor vehicle wiper system. Background technique [0002] A gear motor basically consists of an electric motor coupled with a reduction mechanism responsible for multiplying the speed of the motor in order to obtain a substantial rotationally transmitted torque. [0003] Different types of electric motors are available for gear motors, especially brushless DC motors, which offer many advantages such as long service life, reduced size and consumption, and low noise levels. [0004] The control of electric motors is more complex than brushed electric motors because the angular position of the rotor of a brushless DC motor must be known accurately in order to allow satisfactory operation. [0005] This type of electric motor includes electromagnetic excitation coils provided on a stator, and the electromagnetic excitation coils are alternately provided via an inverter to allow driving of a rotor. [0006] The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K7/08H02K7/00F16C17/00H02K7/116
CPCF16C17/00H02K7/003H02K7/083H02K7/085H02K7/116F16H2057/0213F16C35/063F16C19/00F16H57/039H02K7/081H02K7/1166F16C2326/09F16C2380/27B60S1/08B60S1/26
Inventor J-L.赫拉达
Owner VALEO SYST DESSUYAGE
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