Door latch device
AssigneeMitsui Kinzoku Act Corporation
InventorsShintaro Okawa, Yasuyuki Watanabe
Life of this patent
Estimating the term…
Abstract
A door latch device includes a motor, a mechanical mechanism, a door lock ECU, and a case. The door lock ECU includes a printed wiring board and a capacitor connected to the printed wiring board. The case includes a bottom plate, a first accommodation space for accommodating the motor and the mechanical mechanism on one side of the bottom plate, and a second accommodation space for accommodating the printed wiring board and the capacitor on the other side of the bottom plate. The bottom plate is provided with a capacitor accommodation portion recessed from the second accommodation space toward the first accommodation space and the capacitor is arranged in the capacitor accommodation portion.
Claims6
A door latch device which is provided in a door of a vehicle and closes and opens the door by latching and unlatching a striker provided on a main body side of the vehicle, the door latch device comprising:
- a motor;
- a mechanical mechanism which is driven by the motor;
- a door lock ECU configured to control the motor;
- and
- a case surrounding the motor, the mechanical mechanism, and the door lock ECU,
- wherein the door lock ECU comprises a printed wiring board and a power storage body connected to the printed wiring board,
- wherein the case has:
- a partition wall;
- a first accommodation space accommodating the motor and the mechanical mechanism on a first side of the partition wall;
- and
- a second accommodation space accommodating the printed wiring board and the power storage body on a second side of the partition wall, the second side being opposite to the first side,
- wherein the partition wall is provided with a power storage body accommodation portion protruding from the second accommodation space toward the first accommodation space,
- wherein the power storage body is placed in the power storage body accommodation portion,
- wherein the mechanical mechanism comprises:
- a latch mechanism configured to hold the door in a closed state;
- and
- an electric release mechanism configured to release the latch mechanism by power of the motor;
- wherein the power storage body is arranged on an opposite side to the mechanical mechanism with the motor interposed between the power storage body and the mechanical mechanism when viewed from a first direction orthogonal to the partition wall, and
- wherein the power storage body and the motor are arranged so that at least parts of the power storage body and the motor overlap when viewed from a second direction parallel to the partition wall.
Dependencies are inferred from the claim text.