Abstract: An electrode is made by turning a harness such that the electrode has a predetermined are for detecting capacitance. A method of manufacturing of an electrode includes step so turning a wire, and shaping the electrode with the wire. The electrode has a predetermined area for detecting capacitance.

Abstract: A door opening/closing device for vehicle including a controlling means for controlling a vehicle door locking or unlocking operation by confirming a user's intent for locking or unlocking operation of the vehicle door includes a handle frame provided at the vehicle door, a handle member provided outside of the vehicle door and supported by the handle frame for operating opening or closing of the vehicle door, a handle cap provided outside the vehicle door and supported with the handle frame, a light decorative member provided at the handle cap, a luminous member accommodated in the handle frame and activated by the controlling means in response to the locking or unlocking condition of the vehicle door, and a light guiding means connecting the light decorative member and the luminous member.

Abstract: A vehicle door lock system has a lock mechanism for locking or unlocking the vehicle door. A control mechanism for controlling an operation of the lock mechanism includes first and second resonators. The first resonator resonates at a predetermined first value Q for transmitting a first signal to the outside of the vehicle. The second resonator is connected in series with the first resonator and resonates at a second value Q which is greater than the first value Q, and changing a resonant condition in accordance with a change of a capacitance. A single actuator is provided for actuating the first and second resonators. A switching mechanism is provided which utilizes the actuator for alternatively switching actuation between the first and the second resonators. The control mechanism controls the switching operation of the switching mechanism and the operation of the door lock mechanism in accordance with the resonant condition of the second resonator.

Abstract: A control method for a door lock device performs an unlocking operation of a lock mechanism of a vehicle door by energizing and actuating an actuator in response to an unlocking command from a vehicle user. The method has: a first time period (T1) for energizing the actuator in accordance with the unlocking command by the user; a second time period (T2) for returning an operation portion provided on a vehicle from an operated position to a normal position; and a third time period (T3) during which the actuator starts the unlocking operation and complete the unlocking of the lock mechanism. The first time period is determined to be equal to or longer than a sum of the second time period and the third time period.

Abstract: An antenna device includes a door handle provided outside of a vehicle door for opening the vehicle door, and an antenna provided inside of the door handle and generating a magnetic field component in a direction different from a perpendicular direction to an outer surface of the vehicle door.

Abstract: In a human body detector, a wave-detection circuit for detecting waves of a resonance voltage is connected to a sensor resonance circuit that varies a constant frequency voltage in accordance with a change in the capacitance of a sensor electrode. The wave-detection circuit is connected to a differentiator that acquires a changing rate by differentiating the wave-detection voltage with respect to time, and allows a voltage to pass if the changing rate of the voltage is greater than or equal to a predetermined value. The differentiator is connected to a high-pass filter that allows passage of a voltage whose changing rate is greater than or equal to a second predetermined value. The high-pass filter is connected to a comparator whose non-inversion input terminal is connected to a power source that applies thereto a reference voltage.

Abstract: A door opening/closing device for a vehicle includes a control mechanism recognizing an opening/closing operation of a vehicle door based upon an operation of a door handle, operating a door lock mechanism so as to unlock the vehicle door when the opening operation of the vehicle door is recognized, operating the door lock mechanism so as to lock the vehicle door when the closing operation of the vehicle door is recognized, and controlling a light-emitting means included in the door handle to light-emit in response to the operation of the door lock mechanism.

Abstract: A human body detecting d vice includes a door handle provided on an outer panel, a first sensor electrode provided on the obverse side of the door handle, and a second sensor electrode provided on the reverse side of the door handle. The human body is detected in response to variation of capacitance between the outer panel and two sensor electrodes.

Abstract: A loop antenna device has a first antenna generating a first magnetic field and a second antenna generating a second magnetic field such that the first magnetic field and the second magnetic field each have a different axis. A series resonant circuit and a parallel resonant circuit are provided for the first antenna and the second antenna, respectively. The series resonant circuit has at least a second coil, a link coil wound around a ferrite core, and a capacitor in series. The parallel resonant circuit has a first coil and a capacitor. When one of the first and second antennas are disposed in the vicinity of a conductor, an electromagnetic wave absorbing member is disposed between a conductor and one of the first and second antennas.

Abstract: A control method for a door lock device performs an unlocking operation of a lock mechanism of a vehicle door by energizing and actuating an actuator in response to an unlocking command from a vehicle user. The method has: a first time period (T1) for energizing the actuator in accordance with the unlocking command by the user; a second time period (T2) for returning an operation portion provided on a vehicle from an operated position to a normal position; and a third time period (T3) during which the actuator starts the unlocking operation and complete the unlocking of the lock mechanism. The first time period is determined to be equal to or longer than a sum of the second time period and the third time period.

Abstract: A human body detecting device for detecting an approach of a human body includes a sensor electrode provided in a housing and having detecting portions for detecting the approach of the human body to the housing. The detecting portions of the sensor electrode detect at least two different surfaces of the housing, and each of the detecting portions is provided at each surface side in the housing.

Abstract: An antenna device includes a door handle provided inside of a vehicle door for opening the vehicle door, and an antenna provided inside of the door handle and generating a magnetic field component in a direction different from a perpendicular direction to an outer surface of the vehicle door.

Abstract: To provide a loop antenna device which inhibits the unnecessary radiation of the electric wave and which can increase the sending speed of data placed on the electric wave. The first loop antenna 14 includes the coil L11 and the resonant capacitor C1 and constitutes a series resonant circuit in which the oscillator is connected in series to the coil L11 and the resonant capacitor C1. The second loop antenna 15 includes the coil L2 and the resonant capacitor C2 which are connected each other in parallel and constitutes a parallel resonant circuit. The second loop antenna 15 is magnetically connected to the first loop antenna 14 via the link coil L12. The switching elements 14, 15 are connected to the first and second loop antennas 14, 15 and the damping is performed to the resonant circuits of the antennas 14, 15 when the switching elements 18, 19 become OFF condition by the control signal from the controller 9.

Abstract: A sensor electrode which detects an approach of a person to a vehicle can be housed in a door handle body for vehicle and is prevented from giving an adverse influence to transmission signals outputted from a transmission antenna. Slits are formed in a bottom portion of the body. The sensor electrode covered with a resin mold is pushed into the inside of the slit.

Abstract: [OBJECT]To provide a loop antenna device which inhibits the unnecessary radiation of the electric wave and which can increase the sending speed of data placed on the electric wave.

Abstract: A vehicle door lock system has a lock mechanism for locking or unlocking the vehicle door. A control mechanism for controlling an operation of the lock mechanism includes first and second resonators. The first resonator resonates at a predetermined first value Q for transmitting a first signal to the outside of the vehicle. The second resonator is connected in series with the first resonator and resonates at a second value Q which is greater than the first value Q, and changing a resonant condition in accordance with a change of a capacitance. A single actuator is provided for actuating the first and second resonators. A switching mechanism is provided which utilizes the actuator for alternatively switching actuation between the first and the second resonators. The control mechanism controls the switching operation of the switching mechanism and the operation of the door lock mechanism in accordance with the resonant condition of the second resonator.

Abstract: In a human body detector, a wave-detection circuit for detecting waves of a resonance voltage is connected to a sensor resonance circuit that modifies a constant frequency voltage in accordance with a change in the capacitance of a sensor electrode. The wave-detection circuit is connected to a differentiator that acquires a changing rate by differentiating the wave-detection voltage with respect to time, and allows a voltage to pass if the changing rate of the voltage is greater than or equal to a predetermined value. The differentiator is connected to a high-pass filter that allows passage of a voltage whose changing rate is greater than or equal to a second predetermined value. The high-pass filter is connected to a comparator whose non-inversion input terminal is connected to a power source that applies thereto a reference voltage.

Abstract: A door approach transmission apparatus comprises an outside door handle 20 having a conductor with a slit 23 disposed in the door handle surface. A slot antenna 21, 23, 24, 25 is disposed at the slit 23, and includes feeding points 24, 25 installed on the conductor. The apparatus also includes a transmitter 26 for applying voltage for radio wave oscillation to the feeding points 24, 25. The above-described door approach transmission and reception apparatus can be used in a door lock control apparatus where a search radio wave is emitted from a vehicle, a portable wireless device 10 receives the search radio wave, and returns an ID signal. An electrically driven door lock apparatus 40 is driven to unlock the door when the returned ID signal coincides with a registered ID signal. The search radio wave is irradiated from the slot antenna. Either of a transmitter 26 and a receiver 33 is selectively connected to the feeding points 24, 25.

Abstract: A loop antenna device has a first antenna generating a first magnetic field and a second antenna generating a second magnetic field such that the first magnetic field and the second magnetic field each have a different axis. A series resonant circuit and a parallel resonant circuit are provided for the first antenna and the second antenna, respectively. The series resonant circuit has at least a second coil, a link coil wound around a ferrite core, and a capacitor in series. The parallel resonant circuit has a first coil and a capacitor. When one of the first and second antennas are disposed in the vicinity of a conductor, an electromagnetic wave absorbing member is disposed between a conductor and one of the first and second antennas.

Abstract: A three band antenna unit for reception of radio waves in the AM and FM bands and for reception and transmission of radio waves in the UHF band as well as its connection with filters and a communication equipment are disclosed. The antenna unit includes an upper, first element for reception and transmission of a radio wave in the UHF band and a lower, second element for reception of radio waves in the FM band, both connected to a mobile telephone. An AM band signal from the first element is transmitted to the lower, second element through an AM band pass filter. A radio wave signal from the lower, second element is transmitted to an AM/FM tuner through an AM/FM band pass filter.