Electric motor-operated actuator for a motor vehicle lock
AssigneeRobert Bosch GmbH
InventorChecrallah Kachouh
Life of this patent
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Abstract
An electric motor-operated actuator for a motor vehicle lock is provided which permits manual activation in a very wide range of operation. The actuator includes a control crank formed by an outer and an inner guide cam which, over a considerable angular range, have a radial distance from one another which corresponds roughly to the radial distance from an inner stop and an outer stop to allow free manual switching of the control lever between two operating states. The guide cams which form the control crank have radii which change only in a relatively small angular range for purposes of displacement of the control lever, and therefore have a relatively large rise. Preferably, the actuator is overall self-locking.
Claims13
An electric motor-operated actuator for a motor vehicle lock, the motor vehicle lock having a lock mechanism which can be switched between operating states of at least one of “unlocked”and “locked;” “unlocked” and “locked-antitheft;” and “unlocked,” “locked” and “locked-antitheft,” comprising:
- a drive motor, an actuator pulley rotary driven by the drive motor, and a control lever loaded with a tilt spring and dynamically coupled to the actuator pulley for switching the lock mechanism into the various operating states, the actuator pulley having a control crank which extends in a curve around an axis of rotation of the actuator pulley, said control crank including a closed inner guide cam and a closed outer guide cam with changing radii of a guide channel, the control crank including, on one end, an inner stop near the axis of rotation, and on another end, an outer stop away from the axis of rotation, the control lever having a guide element which fits into the control crank, said control lever adapted to be switched via the guide element by the control crank into the operating states which are attained when one of the inner stop and the outer stop touch the guide element, the control lever being capable of being manually switched back and forth between two operating states at least in one end position of the actuator pulley with the guide element on at least one of the inner stop and the outer stop;
- wherein the drive motor is adapted to be turned off when at least one of the inner stop and the outer stop contacts the guide element, the guide element and the corresponding stop being adapted to pause in the attained end position after the drive motor is turned off;
- wherein said guide channel, in only a partial angular range, forms the control crank for displacing the control lever, another partial angular range of the guide channel and the control crank forming the inner and outer guide cam having a radial distance from one another which corresponds roughly to the radial distance from the inner stop and the outer stop to allow free manual switching of the control lever between the two operating states, wherein the actuator is totally self-locking.
An electric motor-operated actuator for a motor vehicle lock, the motor vehicle lock having a lock mechanism which can be switched between operating states of at least one of “unlocked”and “locked;” “unlocked” and “locked-antitheft;” and “unlocked,” “locked” and “locked-antitheft,” comprising:
- a drive motor, an actuator cylinder rotary driven by the drive motor, and a control lever loaded with a tilt spring and dynamically coupled to the actuator cylinder for switching the lock mechanism into the various operating states, the actuator cylinder having a control crank which extends in a curve around a cylinder axis as the axis of rotation on the cylinder jacket, the control crank having an inner stop on one end, and on another end, and outer stop spaced away from the inner stop in the axial direction, the control lever having a guide element which fits into the control crank, said control lever being adapted to be switched via the guide element by the control crank into two operating states which are attained when one of the inner stop and the outer stop touch the guide element, the control lever being capable of being manually switched back and fourth between two operating states at least in one end position of the actuator pulley with the guide element on at least one of the inner stop and the outer stop;
- wherein the drive motor is adapted to be turned off when at least one of the inner stop and the outer stop contacts the guide element, the guide element and the corresponding stop adapted to pause in the attained end position after the drive motor is turned off, said guide channel, in only a partial angular range, forms the control crank for displacing the control lever, another partial angular range of the guide channel and the control crank forming the inner and outer guide cam having an axial distance from one another which corresponds roughly to the axial distance from the inner stop and the outer sop to allow free manual switching of the control lever between the two operating states, wherein the actuator is totally self-locking.
An electric motor-operated actuator for a motor vehicle lock, the motor vehicle lock having a lock mechanism which can be switched between operating states of at least one of “unlocked”and “locked-antitheft,” and “unlocked,” “locked” and “locked-antitheft,” comprising:
- a drive motor, a driven part driven by the drive motor, and a control lever dynamically coupled to the driven part for switching the lock mechanism into the various operating states, the control lever being able to be manually switched back and forth between two operating states, freewheeling at least in one end position of the driven part, and the drive motor being adapted to be turned off when a journal makes contact with a stop, and the journal and the stop being adapted to pause in an attained end position after the drive motor is turned off;
- wherein a trap pocket is formed on the stop which prevents manual movement of the control lever transversely to the stop and thus accomplishes the “locked-antitheft” operating state.
Dependencies are inferred from the claim text.