US 6,685,239 B2Granted

Vehicle door opening closing device

AssigneesAisin Seiki Kabushiki Kaisha, Aisin Kiko Co., Ltd.

InventorsNobuhiro Yamauchi, Tokihiko Yamamoto, Toshio Machida, Jun Kozuka

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Abstract

A vehicle door opening-closing device which enables a reduction in the time for releasing a fully closed condition of the vehicle door without changing the driving force and the driving speed of the actuator when operating a vehicle door from a half closed condition to the fully closed condition and when releasing the fully closed condition. A latch mechanism includes a latch engageable with a striker and an engagement member for maintaining the latch at a condition for operating the vehicle door to the half closed condition and the fully closed condition. An operation mechanism operated by a motor operates the latch by way of a closing lever and operates the engagement member by way of an opening lever based on operation of an operation member. The opening lever possess a smaller lever ratio than the lever ratio of the closing lever.

Claims23

Dependent claims

A vehicle door opening-closing device comprising:

a latch mechanism engageable with a striker for effecting a half closed condition of a vehicle door and a fully closed condition of the vehicle door;
an operation mechanism operatively engageable with the latch mechanism at a point of force application to operate the latch mechanism during a closing operation from the half closed condition to the fully closed condition and during an opening operation to release the fully closed condition of the vehicle door;
an actuator for actuating the operation mechanism;
the operation mechanism operating the latch mechanism with a faster moving speed at the point of force application during the opening operation compared to during the closing operation under a driving speed of the actuator that is substantially the same during release of the fully closed condition of the vehicle door and during movement of the vehicle door from the half closed condition to the fully closed condition;
and
wherein the operation mechanism includes an opening lever and a closing lever each possessing a lever ratio, the lever ratio of the opening lever being smaller than the lever ratio of the closing lever.

3 more elements

A vehicle door opening-closing device comprising:

a latch mechanism engageable with a striker for effecting a half closed condition of the vehicle door and a fully closed condition of the vehicle door;
a movable opening lever engageable with the latch mechanism at a first point of force application to operate the latch mechanism during an opening operation to release the fully closed condition of the vehicle door, the opening lever including a fulcrum;
a movable closing lever engageable with the latch mechanism at a second point of force application to operate the latch mechanism during a closing operation to move the vehicle door from the half closed condition to the fully closed condition, the closing lever including a fulcrum;
a distance between the fulcrum of the opening lever and the first point of force application being greater than a distance between the fulcrum of the closing lever and the second point of force application;
a motor producing an output to move the opening lever into engagement with the latch mechanism and to move the closing lever into engagement with the latch mechanism, the motor operating under a driving force and a driving speed during release operation of the fully closed condition of the vehicle door that is the same as the driving force and the driving speed under which the motor is operated during movement of the vehicle door from the half closed condition to the fully closed condition.

2 more elements

A vehicle door opening-closing device comprising:

a latch mechanism engageable with a striker and positionable in a half latched condition and a fully latched condition;
a motor;
an operation member operatively associated with the motor to move under driving operation of the motor;
a movable opening lever having a fulcrum, the opening lever being adapted to be contacted by the operation member at a first contacting point to move the opening lever into contact with the latch mechanism at a first point of force application of the opening lever to operate the latch mechanism and effect release of the fully latched condition of the latch mechanism;
a movable closing lever having a fulcrum, the closing lever being adapted to be contacted by the operation member at a second contacting point to move the closing lever into contact with the latch mechanism at a second point of force application of the closing lever to operate the latch mechanism from the half latched condition to the fully latched condition;
the opening lever having a lever ratio defined as a ratio of a distance between the fulcrum of the opening lever and the first contacting point relative to a distance between the fulcrum of the opening lever and the first point of force application;
the closing lever having a lever ratio defined as a ratio of a distance between the fulcrum of the closing lever and the second contacting point relative to a distance between the fulcrum of the closing lever and the second point of force application;
and
the lever ratio of the opening lever being less than the lever ratio of the closing lever.

6 more elements

Dependencies are inferred from the claim text.