Electric steering column lock system

Patent metadata

Field	Value
Publication number	US-9475458-B2
Application number	US-201314772507-A
Country	US
Kind code	B2
Filing date	Mar 4, 2013
Priority date	Mar 4, 2013
Publication date	Oct 25, 2016
Grant date	Oct 25, 2016

Abstract

A locking device for a motor vehicle having a steering wheel column has a housing, a worm wheel cover, a blocking bolt that locks a steering wheel shaft in the steering wheel column, wherein the blocking bolt is movable between a first and a second position, a drive that moves the blocking bolt from the first position to the second position, a latching element that latches the blocking bolt, a mechanical activation mechanism that activates the latching element, and that has a trigger element, and a pushing element. In the first position, the blocking bolt is in blocking engagement with the steering wheel shaft. In the second position, the blocking bolt is disengaged from the steering wheel shaft. The latching element comprises a pin, and an opening is disposed in the blocking bolt for engagement with the pin.

First claim

The invention claimed is:

1. A locking device for a motor vehicle having a steering wheel column, comprising:
a housing;
a worm wheel cover;
a blocking bolt that locks a steering wheel shaft in the steering wheel column, wherein the blocking bolt is movable between a first and a second position;
a drive that moves the blocking bolt from the first position to the second position;
a latching element that latches the blocking bolt;
a mechanical activation mechanism that activates the latching element, and that comprises a trigger element; and
a pushing element,
wherein, in the first position, the blocking bolt is in blocking engagement with the steering wheel shaft,
wherein, in the second position, the blocking bolt is disengaged from the steering wheel shaft,
wherein the latching element comprises a pin, and an opening is disposed in the blocking bolt for engagement with the pin,
wherein the trigger element holds back the pin in an unlatched position against the pushing force of the pushing element,
wherein the latching element is activated when the housing and/or the worm wheel cover is manipulated, and
wherein the latching element is activated to move from the second position to the first position by movement of the trigger element in at least one of at least two different trigger directions.

2. The locking device according to claim 1 ,
wherein the trigger element is fixed on the housing, or is part of the housing.

3. The locking device according to claim 1 ,
wherein the trigger element is coupled to the worm gear cover.

4. The locking device according to claim 1 ,
wherein the trigger element projects through a hole formed in the worm wheel cover.

5. The locking device according to claim 1 ,
wherein the pin comprises a collar that engages with the trigger element.

6. The locking device according to claim 1 ,
wherein the pushing element is a spring.

Assignees

• Nissan Motor

Inventors

• Marx Thilo
• Vagney Damien
• Hayashi Kenjirou

Classifications

• B60R25/02153 Primary

  comprising a locking member radially and linearly moved towards the steering column · CPC title

• B60R25/0215 Primary

  using electric means, e.g. electric motors or solenoids · CPC title

• B62D1/184

  Mechanisms for locking columns at selected positions · CPC title

• E05B81/02

  characterised by the type of actuators used · CPC title