RU18678U1 - VEHICLE TRANSMISSION - Google Patents

Description

Gearbox car.

The utility model relates to the field of automotive industry, namely to gearboxes of a car.

A known gearbox containing a housing, a primary shaft, an intermediate shaft, a secondary shaft mounted on nodshipnikovye bearings in the housing 1.

The disadvantage of the gearbox is the design complexity of the mechanical speedometer drive and the increased noise level arising from its gears.

The technical result achieved by the proposed solution is to reduce the number of parts related to the speedometer drive and reduce gearbox noise by eliminating mechanical contact between its parts.

The specified result is achieved by the fact that a rotor is installed on the secondary shaft of the gearbox, which affects the magnetic field in the zone of the sensor element of the speed sensor installed in the hole of the housing.

Thus, the claimed gearbox meets the criterion of novelty.

The claimed technical solution is illustrated by the drawings:

FIG. 1 - general view of the gearbox;

2006133288

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MPKV60K17 / 06

FIG. 2 is a section AA in FIG. 1.

The proposed gearbox contains a housing 1, a primary shaft 2, an intermediate shaft 3, a secondary shaft mounted on it by a gear rotor 5 and a speed sensor 6 installed in the hole of the housing with a clearance B relative to the rotor.

The rotation of the secondary shaft 4, with the gear rotor 5 fixed on it, leads to the formation of an electric signal by the speed sensor 6 in the form of rectangular pulses during the passage of the teeth of the rotor in the gap zone B. The formation of electric pulses by the sensor occurs due to a change in the magnetic field in the zone of the sensor 6. The gearbox of the car of this design provides the necessary accuracy of the speedometer.

Sources of information taken into account when preparing the application:

1 - Car GAZ-33021 Gazelle: device and maintenance. Illustrated album. Ed. Yu.V. Kudryavtseva, Moscow, Za rulya Publishing House, 1997, p. 45. the closest analogue.

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Claims (1)

An automobile gearbox comprising a housing, a primary shaft, an intermediate shaft, a secondary shaft mounted on bearings in the housing, characterized in that a rotor is installed on the secondary shaft, affecting the magnetic field in the area of the sensing element of the speed sensor installed in the housing bore.