Door lock system and handle of door for vehicle

Patent metadata

Field	Value
Publication number	US-11030836-B2
Application number	US-201916674175-A
Country	US
Kind code	B2
Filing date	Nov 5, 2019
Priority date	Nov 19, 2018
Publication date	Jun 8, 2021
Grant date	Jun 8, 2021

Abstract

A door lock system includes a first circuit performing a first communication to request a response for determining availability of unlocking a door, a second circuit performing a second communication for determining availability of unlocking the door and transmitting a reception result of the second communication to an outside of the door lock system, and a control circuit controlling operations of the first circuit and the second circuit. The control circuit stops one of the first communication and the second communication from being performed in a case where the other one of the first communication and the second communication is performed.

First claim

The invention claimed is:

1. A door lock system comprising:
a first circuit performing a first communication to request a response for determining availability of unlocking a door;
a second circuit performing a second communication for determining availability of unlocking the door and transmitting a reception result of the second communication to an outside of the door lock system; and
a control circuit controlling operations of the first circuit and the second circuit,
the control circuit stopping one of the first communication and the second communication from being performed in a case where the other one of the first communication and the second communication is performed, wherein
the first circuit includes a first antenna circuit for wireless communication,
the control circuit interrupts the first antenna circuit in a case where the second communication is performed,
the first antenna circuit includes a first antenna including a coil, a capacitor, and a switch connected in series with the capacitor,
the coil, the capacitor, and the switch are connected in parallel with the control circuit, the first antenna circuit configured to function as a reception circuit when the switch is short-circuited,
the control circuit short-circuits the switch to constitute an LC circuit including the coil and the capacitor in a case where the second communication is performed.

2. The door lock system according to claim 1 , wherein
the first circuit is configured to perform the first communication in wireless communication,
the second circuit is configured to perform the second communication in wireless communication,
the first circuit performs relatively longer-distance wireless communication than the second circuit.

3. The door lock system according to claim 2 , wherein the control circuit stops the first communication from being performed in a case where the second communication is performed.

4. The door lock system according to claim 1 , wherein the control circuit brings the first circuit to an inoperative state in a case where the second communication is performed.

5. The door lock system according to claim 1 , further comprising a proximity sensor configured to input one of an unlocking instruction and a locking instruction relative to the door, wherein
the second circuit includes a second antenna for wireless communication,
the proximity sensor includes an electrode that detects one of the unlocking instruction and the locking instruction,
the second antenna is arranged adjacent to an outer circumference of the electrode.

6. The door lock system according to claim 5 , wherein
the proximity sensor is configured to distinguish between a first proximity distance and a second proximity distance that is closer to the proximity sensor than the first proximity distance,
the control circuit enables the second communication to be performed in a case of detecting the first proximity distance and stops the second communication from being performed in a case of detecting the second proximity distance.

7. The door lock system according to claim 5 , wherein the control circuit stops an operation of the proximity sensor in a case where the second communication is performed.

8. A handle of a door for a vehicle, comprising:
a first circuit performing a first communication to request a response for determining availability of unlocking the door;
a second circuit performing a second communication for determining availability of unlocking the door and transmitting a reception result of the second communication;
a control circuit controlling operations of the first circuit and the second circuit;
a pair of electric wires connecting the first circuit and the control circuit in parallel with each other; and
a casing housing the first circuit, the second circuit, and the control circuit,
the pair of electric wires transmitting the reception result of the second communication to an outside of the handle and supplying an electric power supplied from the outside to the first circuit, the second circuit, and the control circuit,
the control circuit stopping one of the first communication and the second communication from being performed in a state where the other one of the first communication and the second communication is performed, wherein
the first circuit includes a first antenna circuit for wireless communication,
the control circuit interrupts the first antenna circuit in a case where the second communication is performed,
the first antenna circuit includes a first antenna including a coil, a capacitor, and a switch connected in series with the capacitor,
the coil, the capacitor, and the switch are connected in parallel with the control circuit, the first antenna circuit configured to function as a reception circuit when the switch is short-circuited,
the control circuit short-circuits the switch to constitute an LC circuit including the coil and the capacitor in a case where the second communication is performed.

9. A door lock system comprising:
a first circuit performing a first communication to request a response for determining availability of unlocking a door;
a second circuit performing a second communication for determining availability of unlocking the door and transmitting a reception result of the second communication to an outside of the door lock system; and
a control circuit controlling operations of the first circuit and the second circuit,
the control circuit stopping one of the first communication and the second communication from being performed in a case where the other one of the first communication and the second communication is performed, wherein
the first circuit includes a first antenna circuit for wireless communication,
the control circuit interrupts the first antenna circuit in a case where the second communication is performed,
the first antenna circuit includes a first antenna including a coil, a first capacitor, a second capacitor, and a switch connected in series with the second capacitor,
the switch and the second capacitor are connected in parallel with the coil,
the first capacitor is connected in series with the control circuit,
the coil, the second capacitor, and the switch are connected in parallel with the control circuit,
the control circuit short-circuits the switch to constitute an LC circuit including the coil and the second capacitor in a case where the second communication is performed.

Assignees

• Aisin Seiki

Inventors

• Koizumi Takaaki
• Hayashi Yuki
• Kotani Rikako
• Tabata Takehiro

Classifications

• G07C2009/00769

  with data transmission performed by wireless means · CPC title

• E05B81/54 Primary

  Electrical circuits (for locking several wings simultaneously E05B77/48) · CPC title

• G07C2209/64

  using a proximity sensor · CPC title

• E05B81/78

  as part of a hands-free locking or unlocking operation · CPC title

• B60J5/04

  arranged at the vehicle sides {(panel mounted arm-rests B60N2/78; wall liners B60R13/02; door edge guards B60R13/043; padded linings associated with the side doors B60R21/0428)} · CPC title