Burglar alarm device for vehicle

• US 20060087412A1
• Filed: 09/22/2005
• Published: 04/27/2006
• Est. Priority Date: 10/07/2004
• Status: Active Grant

• Current Assignee: Mazda Motor Corporation
• Original Assignee: Mazda Motor Corporation
• Inventors: Hamada, Yasushi, Furuzawa, Akihiro, Umeo, Yoshifumi
• Granted Patent: US 7,408,446 B2
• Time in Patent Office: Days
• US Class Current: 340/426.240
• CPC Class Codes: B60R 2011/0007 Mid-console
• CPC Class Codes: B60R 2011/0019 Side or rear panels
• CPC Class Codes: B60R 2011/0029 Floor, e.g. side sills, fire wall
• CPC Class Codes: B60R 21/0153 using field detection presence sensors
• CPC Class Codes: B60R 25/1004 Alarm systems characterised by the type of sensor, e.g. current sensing means using door lock sensors B60R25/1001
• CPC Class Codes: B60R 25/1009 Sonic sensors; Signal treatment therefor
• CPC Class Codes: G01S 13/56 for presence detection presence detection using near field arrangements G01V3/00, e.g. G01V3/08, G01V3/12; burglar, theft or intruder alarms with electrical actuation G08B13/22 - G08B13/26
• CPC Class Codes: G01S 13/886 for alarm systems alarms with electrical actuation G08B13/22

Abstract

There is provided in back of the instrument panel the motion sensor that transmits the radio wave continuously or periodically and receive the radio wave reflected in the vehicle compartment. Also, there is provided the burglar horn that executes specified alarming when a specified change in the reflected radio wave received by the motion sensor occurs. Herein, the motion sensor transmits the radio wave toward the instrument panel. Thereby, the stable burglar alarm operation can be performed.

Claims

1. A burglar alarm device for a vehicle, comprising:

a motion sensor operative to transmit a radio wave and receive the radio wave reflected in a vehicle compartment;

an alarming device operative to execute alarming; and

a burglar alarm control device operative to operate said alarming device for the alarming when a specified change in the reflected radio wave received by said motion sensor occurs,

wherein said motion sensor is disposed so as to be located in back of an instrument panel of the vehicle and to transmit the radio wave in a forward direction of the vehicle and toward the instrument panel.

2. The burglar alarm device for a vehicle of claim 1, wherein the vehicle is a type of vehicle whose part of roof or entire roof are selectively opened and closed or detachable, or a type of vehicle whose roof is fixed and whose part of roof or entire roof are made of a radio-wave transmittable material.

3. The burglar alarm device for a vehicle of claim 2, wherein said motion sensor is disposed so as to transmit the radio wave in a direction that is substantially perpendicular to a dash panel of the vehicle.

4. The burglar alarm device for a vehicle of claim 2, wherein said motion sensor is disposed so as to transmit the radio wave in a direction of a portion below the instrument panel.

5. The burglar alarm device for a vehicle of claim 2, wherein said motion sensor is disposed so as to transmit the radio wave in a forward and downward direction of the vehicle.

6. The burglar alarm device for a vehicle of claim 5, wherein said motion sensor is disposed at a lower portion in the vehicle compartment with the radio wave thereof that is transmitted obliquely downward with respect to a horizontal face, and there is further provided a radio-wave reflecting member operative to reflect at least part of the radio wave transmitted by said motion sensor in a direction that is off the roof of the vehicle.

7. The burglar alarm device for a vehicle of claim 6, wherein said radio-wave reflecting member includes a curved reflecting face that projects upward.

8. The burglar alarm device for a vehicle of claim 6, wherein there is further provided a shut-off plate behind said motion sensor to prevent the radio wave from being transmitted rearward, and said shut-off plate and said motion sensor are integrally fixed to each other.

9. The burglar alarm device for a vehicle of claim 6, wherein said curved reflecting face of the radio-wave reflecting member is constituted such that a curvature of a part thereof operative to reflect the radio wave located at a center of the generation direction is greater than that of the other part thereof.

10. The burglar alarm device for a vehicle of claim 7, wherein said curved reflecting face of the radio-wave reflecting member is constituted such that a curvature of a part thereof operative to reflect the radio wave located at a center of the generation direction is greater than that of the other part thereof.

11. The burglar alarm device for a vehicle of claim 5, wherein said motion sensor is disposed at a lower portion in the vehicle compartment with the radio wave thereof that is transmitted obliquely downward with respect to a horizontal face and toward a metal panel that is disposed substantially laterally at a lower portion of the vehicle, and there are further provided a trim member to cover said motion sensor and said metal panel, and a reflecting member that is provided at said trim member so as to reflect downward at least part of the radio wave reflected by said metal panel.

12. The burglar alarm device for a vehicle of claim 11, wherein said reflecting member is constituted so as to reflect the radio wave toward the instrument panel.

13. The burglar alarm device for a vehicle of claim 11, wherein said reflecting member is disposed so as to be located in substantially parallel to the radio wave transmitted directly by said motion sensor.

14. The burglar alarm device for a vehicle of claim 1, wherein said motion sensor is provided at a console portion between front seats of the vehicle.

15. The burglar alarm device for a vehicle of claim 1, wherein said motion sensor is disposed in back of the front seat, there are further provided a driving operational device of the vehicle on a side of the vehicle and a non-metal member of the front seat between said motion sensor and said driving operational device, and said motion sensor is constituted so as to transmit the radio wave toward said driving operational device.

16. The burglar alarm device for a vehicle of claim 14, wherein said motion sensor is disposed in back of the front seat, there are further provided a driving operational device of the vehicle on a side of the vehicle and a non-metal member of the front seat between said motion sensor and said driving operational device, and said motion sensor is constituted so as to transmit the radio wave toward said driving operational device.

17. A burglar alarm device for a vehicle including a roof that is made of a radio-wave transmittable material, comprising:

a motion sensor operative to transmit a radio wave and receive the radio wave reflected in a vehicle compartment;

an alarming device operative to execute alarming; and

a burglar alarm control device operative to operate said alarming device for the alarming when a specified change in the reflected radio wave received by said motion sensor occurs,

wherein said motion sensor is disposed at a lower portion in the vehicle compartment with the radio wave thereof that is transmitted obliquely downward with respect to a horizontal face, there is further provided a radio-wave reflecting member operative to reflect at least part of the radio wave transmitted by said motion sensor in a direction that is off the roof of the vehicle, said radio-wave reflecting member includes a curved reflecting face that projects upward, and said curved reflecting face of the radio-wave reflecting member is constituted such that a curvature of a part thereof operative to reflect the radio wave located at a center of the generation direction is greater than that of the other part thereof.

18. A burglar alarm device for a vehicle including a roof that is made of a radio-wave transmittable material, comprising:

a motion sensor operative to transmit a radio wave and receive the radio wave reflected in a vehicle compartment;

an alarming device operative to execute alarming; and

a burglar alarm control device operative to operate said alarming device for the alarming when a specified change in the reflected radio wave received by said motion sensor occurs,

wherein said motion sensor is provided at a console portion between front seats of the vehicle that is located in back of an instrument panel of the vehicle and behind the front seats, said motion sensor is disposed so as to transmit the radio wave toward the instrument panel and in a forward and downward direction of the vehicle, there are provided a driving operational device of the vehicle on a side of the vehicle and a non-metal member of the front seat between said motion sensor and said driving operational device, and said motion sensor is constituted so as to transmit the radio wave toward said driving operational device.