US 10,400,894 B2Granted

Vehicle transmission, method, and sensor device for detecting a shifting position of a vehicle transmission

AssigneeKNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH

InventorsChristian Huber, Simon Winter, Martin Rotter

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Abstract

A sensor device is provided for detecting a shifting position of a vehicle transmission. The vehicle transmission includes a transmission chamber, in which transmission elements are arranged. The sensor device includes a bar element, which extends from the transmission chamber into a secondary chamber sealed off from the transmission chamber and is arranged such that the bar element can be moved in dependence on the shifting position. The bar element has an interface arranged in the transmission chamber for coupling the bar element to a transmission element positioned in dependence on the shifting position and an accommodating segment arranged in the secondary chamber. The sensor device also has a transducer element, which is attached to the accommodating segment of the bar element. The sensor device also has a detecting device for detecting a position of the transducer element depending on the shifting position or a motion of the transducer element depending on a change in the shifting position.

Claims8

Dependent claims

A sensor device for detecting a shifting position of a vehicle transmission comprising a transmission chamber in which transmission elements are disposed, the transmission chamber located within a transmission housing, the sensor device comprising:

a bar element extending from the transmission chamber into an adjoining chamber that is sealed off from the transmission chamber and disposed so as to be displaceable depending on the shifting position, wherein the bar element comprises an interface that is disposed in the transmission chamber for coupling the bar element to a transmission element that is positioned depending on the shifting position and an accommodating segment that is disposed in the adjoining chamber;
a transducer element that is mounted on the accommodating segment of the bar element;
a detection device disposed on an outer surface of the transmission housing for detecting a position of the transducer element that is dependent on the shifting position or a displacement of the transducer element that is dependent on a change of the shifting position;
and
at least one sealing element for fluid-tight and/or particle-tight sealing off of the adjoining chamber from the transmission chamber, wherein
the bar element is fed through the at least one sealing element;
the detection device comprises a sensor based on a magnetic principle and the transducer element comprises a magnet or a magnetisable material;
and
the bar element comprises a non-magnetic material.

6 more elements

A vehicle transmission, comprising:

a transmission chamber in which transmission elements are disposed, the transmission chamber located within a transmission housing;
a selector fork that is disposed in the transmission chamber and that is designed to shift at least one transmission element;
a selector shaft that is disposed in the transmission chamber and that is designed to displace the selector fork depending on a shifting position of the vehicle transmission;
and
a sensor device for detecting a shifting position of the vehicle transmission, the sensor device comprising:
a bar element extending from the transmission chamber into an adjoining chamber that is sealed off from the transmission chamber and disposed so as to be displaceable depending on the shifting position, wherein the bar element comprises an interface that is disposed in the transmission chamber for coupling the bar element to a transmission element that is positioned depending on the shifting position and an accommodating segment that is disposed in the adjoining chamber;
a transducer element that is mounted on the accommodating segment of the bar element;
a detection device disposed on an outer surface of the transmission housing for detecting a position of the transducer element that is dependent on the shifting position or a displacement of the transducer element that is dependent on a change of the shifting position;
and
at least one sealing element for fluid-tight and/or particle-tight sealing off of the adjoining chamber from the transmission chamber, wherein
the bar element is fed through the at least one sealing element;
the detection device comprises a sensor based on a magnetic principle and the transducer element comprises a magnet or a magnetisable material;
the bar element comprises a non-magnetic material;
and
the interface of the bar element of the sensor device is mechanically coupled to the selector fork by at least one connecting element.

12 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/825,309Filed 13 Aug 2015 · continuation
Priority: DE 10 2013 101 50314 Feb 2013
Published: US 2015/0345637 A13 Dec 2015
Granted: 3 Sep 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

F16H 63/42
Comprising signals other than signals for actuating the final output mechanisms: ratio indicator devices
F16H 59/70
Inputs being a function of gearing status: dependent on the ratio established
G01D 5/2006
By varying inductance, e.g. by a movable armature: by influencing the self-induction of one or more coils
F16H 2063/3079
Constructional features of the final output mechanisms: shift rod assembly, e.g. supporting, assembly or manufacturing of shift rails or rods;…