Patent ID: 7145436
Filing Date: 2006-12-05
Classification: E05B,E05Y,G07C,Y10T

Abstract:
1. A door opening and closing apparatus for a vehicle that includes an electric actuator for electrically operating a door latch, wherein the electric actuator is driven by power of a battery, the apparatus comprising: a portable device held by a user, wherein the portable device wirelessly transmits an ID signal, which includes an ID code; a power generation mechanism, and a communication control unit, which is driven by power of the battery, wherein the communication control unit compares the ID code transmitted from the portable device with an ID code stored in the communication control unit in advance, wherein the communication control unit permits the electric actuator to be driven only when the condition is met that the ID codes coincide with each other, and wherein, when the voltage of the battery is below a level needed to drive the electric actuator, the communication control unit permits the electric actuator to be driven based on the condition that the ID codes coincide with each other only when the condition is met that power required for driving the electric actuator is obtained by the power generation mechanism, wherein the communication control unit is capable of wirelessly transmitting a request signal when the battery has enough power to drive the electric actuator, wherein the portable device wirelessly transmits the ID signal upon receipt of the request signal, and wherein, when the voltage of the battery is below the level needed to drive the electric actuator, the communication control unit does not transmit the request signal until power required for driving the electric actuator is obtained by the power generation mechanism regardless of whether the communication control unit is supplied with power required for transmitting the request signal.