Vehicle door handle device

Patent metadata

Field	Value
Publication number	US-9710986-B2
Application number	US-201615131053-A
Country	US
Kind code	B2
Filing date	Apr 18, 2016
Priority date	Jun 19, 2015
Publication date	Jul 18, 2017
Grant date	Jul 18, 2017

Abstract

A vehicle door handle device includes: a detection member including an antenna and a DC driving detection member capable of detecting approach or touch of a person, electrically connected to a driving controller through first and second connection wires and are connected in parallel, wherein the antenna is driven by an AC voltage supplied from the driving controller, the detection member is driven by a DC voltage supplied from the driving controller by respectively connecting the first connection wire and the second connection wire to a positive DC power supply and a ground, the detection member includes a power terminal and a ground terminal, a detection output terminal, an antenna driving detection terminal, and an antenna driving detection unit, and the vehicle door handle device further comprises a DC cut capacitor, and a passive element.

First claim

What is claimed is:

1. A vehicle door handle device comprising:
a detection member including an antenna and a DC driving detection member that is capable of detecting approach or touch of a person, which are electrically connected to a driving controller through a first connection wire and a second connection wire and are connected in parallel,
wherein the antenna is driven by an AC voltage supplied from the driving controller,
the detection member is driven by a DC voltage supplied from the driving controller by respectively connecting the first connection wire the second connection wire to a positive DC power supply and aground,
the detection member includes
a power terminal and a ground terminal that are respectively connected to the first connection wire and the second connection wire,
a detection output terminal that is connected to the first connection wire to output a negative detection signal indicating whether or not approach or touch of the person is detected,
an antenna driving detection terminal that is connected to the first connection wire, and
an antenna driving detection unit that detects a driving state of the antenna based on a voltage input to the antenna driving detection terminal, and the vehicle door handle device further comprises
a DC cut capacitor including a first DC cut capacitor terminal connected to the detection output terminal and including a second DC cut capacitor terminal connected to the antenna driving detection terminal, and
a passive element including a first passive element terminal connected to the antenna driving detection terminal and including a second passive element terminal connected to the ground terminal.

2. The vehicle door handle device according to claim 1 , further comprising:
a smoothing capacitor including a first smoothing capacitor terminal connected to the power terminal and including a second smoothing capacitor terminal connected to the ground terminal; and
a resistor including a first resistor terminal connected to the power terminal and including a second resistor terminal connected to the detection output terminal.

3. The vehicle door handle device according to claim 1 , further comprising:
at least one of:
a diode including an anode connected to the first connection wire and including a cathode connected to the power terminal,
a diode including an anode connected to the first connection wire and including a cathode connected to the detection output terminal, and
a diode including an anode connected to the first connection wire and including a cathode connected to the antenna driving detection terminal.

4. The vehicle door handle device according to claim 1 , further comprising:
a stop unit that stops the function of the detection member when a driving state of the antenna is detected by the antenna driving detection unit.

Assignees

• Aisin Seiki

Inventors

• Tabata Takehiro

Classifications

• H01Q1/3241

  particular used in keyless entry systems · CPC title

• G01D5/24 Primary

  by varying capacitance · CPC title

• B60R25/2036

  by using the door logic and door and engine unlock means · CPC title

• H01Q1/3283

  side-mounted antennas, e.g. bumper-mounted, door-mounted (mounted on windscreens H01Q1/1271) · CPC title

• E05B85/10

  Handles · CPC title