Vehicle anti-theft devices

Abstract

To provide an anti-theft device capable of preventing vehicle theft without affecting driving comfort. [Solution] The theft prevention device 10 includes a relay unit 12 connectable to a fuse box 100. The relay unit 12 includes a circuit breaker 70a and a control unit 28. The circuit breaker 70a includes a socket 22 having a pair of terminals 23a, a first wiring unit (wires 50d, 50f) electrically connected to one terminal 23a of the socket 22, a second wiring unit (wire 50e) electrically connected to the other terminal 23a of the socket 22, and a switching unit 32 provided in the first wiring unit and switching between energization and de-energization of the first wiring unit. The control unit 28 controls the switching unit 32 based on an operation signal from a remote control device 14.

Description

[Technical field]

[0001] The present invention relates to an anti-theft device for a vehicle. [Background technology]

[0002] In recent years, vehicle (automobile) theft using a technique called CAN invaders has become a problem. CAN invaders can unlock the doors and start the prime mover (engine, motor) by invading the vehicle's control system built using a CAN (Controller Area Network) from outside the vehicle. It is difficult to completely prevent intrusion into the CAN by CAN invaders, so anti-theft measures generally taken involve physically preventing the vehicle from traveling (see, for example, Patent Document 1).

[0003] The brake pedal lock disclosed in Patent Document 1 is attached to the foot space of a vehicle and can change the movable range of the brake pedal. When using the brake pedal lock of Patent Document 1, for example, the movable range of the brake pedal is narrowed so that the user cannot depress the brake pedal to a position where the brakes are applied when leaving the vehicle. This makes it impossible to start the engine of a general vehicle that starts the engine with the brake pedal depressed. As a result, it is possible to prevent theft of the vehicle. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Utility Model Registration No. 3240672 Summary of the Invention [Problem to be solved by the invention]

[0005] The brake pedal lock disclosed in Patent Document 1 must be provided near the brake pedal, narrowing the driver's foot space and thus reducing driving comfort.

[0006] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide an anti-theft device that can prevent vehicle theft without affecting driving comfort. [Means for solving the problem]

[0007] (1) An anti-theft device for a vehicle according to one embodiment of the present invention comprises: a first socket having a pair of terminals; a first wiring portion electrically connected to one terminal of the first socket and electrically connectable to a second socket of a fuse box provided in a vehicle; a second wiring portion electrically connected to the other terminal of the first socket and electrically connectable to the second socket; and a first switching unit that is provided on the first wiring portion or the second wiring portion and switches between energization and deenergization of the first wiring portion or the second wiring portion.

[0008] (2) The anti-theft device may include a control unit that controls the first switching unit based on an operation signal from a remote control device.

[0009] (3) The anti-theft device includes a relay unit including the first socket, the first wiring section, the second wiring section, the first switching section, and the control section; The relay unit may further include a cable that is detachable from the relay unit and electrically connects the first wiring portion and the second wiring portion to the second socket.

[0010] (4) The first socket may be configured to allow a fuse that is insertable into the second socket to be inserted therein.

[0011] (5) The control unit may be operable by power supplied from a power source provided in the vehicle.

[0012] (6) The anti-theft device is a third socket having a pair of terminals; a third wiring portion electrically connected to one terminal of the third socket and electrically connectable to the second socket; a fourth wiring portion electrically connected to the other terminal of the third socket and electrically connectable to the second socket; The power supply may further include a detection unit that is provided to the third wiring portion or the fourth wiring portion and detects a voltage or a current supplied to the third wiring portion or the fourth wiring portion.

[0013] (7) The anti-theft device further includes a connection part to which an alarm can be connected, The control unit may activate the alarm connected to the connection unit when the detection unit detects a voltage or current equal to or greater than a predetermined value while the first switching unit cuts off current to the first wiring unit or the second wiring unit.

[0014] (8) The fuse box includes a plurality of the second sockets, The third wiring portion and the fourth wiring portion may be electrically connected to the second socket, of the plurality of second sockets, to which accessory power is supplied.

[0015] (9) The anti-theft device is A detection wiring portion; The power supply device may further include a detection unit that detects a voltage or a current supplied to the detection wiring unit.

[0016] (10) In a state in which the first switching unit enables current to flow through the first wiring unit or the second wiring unit and the detection unit detects a voltage or current equal to or greater than a predetermined value, the control unit may stop the first switching unit from switching the current flow.

[0017] (11) The anti-theft device has a plurality of blocking units, each of the plurality of interrupting units includes the first socket, the first wiring unit, the second wiring unit, and the first switching unit; The control unit may control the first switching units of the plurality of interrupters.

[0018] (12) The anti-theft device further includes an extension relay unit electrically connected to the relay unit, the extension relay unit includes a fourth socket having a pair of terminals, a fifth wiring section electrically connected to one terminal of the fourth socket and electrically connectable to the second socket, a sixth wiring section electrically connected to the other terminal of the fourth socket and electrically connectable to the second socket, and a second switching section provided on the fifth wiring section or the sixth wiring section and switching between energization and de-energization of the fifth wiring section or the sixth wiring section, The control unit may control the first switching unit and the second switching unit based on the operation signal from the remote control device.

[0019] (13) The anti-theft device further includes a connection unit to which a buzzer that emits a sound according to a state of the first switching unit can be connected, The control unit may drive the buzzer connected to the connection unit based on an operation signal from the remote control device.

[0020] (14) The fuse box includes a plurality of the second sockets, The first wiring portion and the second wiring portion may be electrically connected to the second socket for a door lock or a brake lamp among the plurality of second sockets. Effect of the Invention

[0021] According to the present invention, vehicle theft can be prevented without affecting driving comfort. [Brief description of the drawings]

[0022] [Figure 1]FIG. 1 is a schematic diagram showing a vehicle equipped with an anti-theft device according to one embodiment of the present invention. [Diagram 2] FIG. 2 is a schematic diagram showing a relay unit, a cable unit, and a fuse box. [Diagram 3] FIG. 3 is a schematic diagram showing a state in which the anti-theft device (relay unit) is used. [Figure 4] FIG. 4 is a diagram showing an electrical connection relationship between the relay unit and the fuse box. [Diagram 5] FIG. 5 is a diagram showing a modified example of the relay unit. [Figure 6] FIG. 6 is a diagram showing a relay unit to which an extension relay unit is connected. [Figure 7] FIG. 7 is a schematic diagram showing the configuration of the cable and the blocking unit. [Figure 8] FIG. 8 is a diagram showing a modified example of the anti-theft device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] (Configuration of anti-theft device) DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An anti-theft device for a vehicle according to an embodiment of the present invention will now be described with reference to the drawings. Fig. 1 is a schematic diagram showing a vehicle equipped with an anti-theft device according to an embodiment of the present invention.

[0024] As shown in FIG. 1, an anti-theft device 10 according to this embodiment includes a relay unit 12, a remote control device 14, and a cable unit 16. The remote control device 14 is configured to be capable of wireless communication with the relay unit 12. The remote control device 14 transmits an operation signal to the relay unit 12 when operated by a user. In this embodiment, the remote control device 14 is configured to be capable of transmitting an operation signal using, for example, a rolling code. The remote control device 14 may be a dedicated operation device for the anti-theft device 10, or may be a terminal device such as a tablet or a smartphone.

[0025] The relay unit 12 is mounted on the vehicle 1. Specifically, the relay unit 12 is connected to a fuse box 100 of the vehicle 1 by a cable unit 16. In this embodiment, for example, the relay unit 12 and the fuse box 100 are connected inside the vehicle 1 so that the relay unit 12 cannot be confirmed from outside the vehicle 1.

[0026] Fig. 2 is a schematic diagram showing the relay unit 12, the cable unit 16, and the fuse box 100. As shown in Fig. 2, the relay unit 12 includes a housing 20, a plurality of sockets 22, 24, 26, a control unit 28, a receiving unit 30, a plurality of switching units 32, 34, a detection unit 36, and a plurality of connection units 38, 40, 42, 44, 46.

[0027] In this embodiment, the housing 20 is formed in a box shape. The sockets 22, 24, 26 and the connection parts 38, 40, 42, 44, 46 are provided on the housing 20 so as to be exposed from the housing 20. In this embodiment, the sockets 22, 24, 26 have the same configuration and each have a pair of terminals 23a. The sockets 22, 24, 26 are each configured to allow a fuse 104 of the fuse box 100, which will be described later, to be inserted therein.

[0028] The control unit 28, the receiving unit 30, the switching units 32 and 34, and the detection unit 36 ​​are provided in the housing 20. In this embodiment, the control unit 28 is electrically connected to the receiving unit 30, the switching units 32 and 34, the detection unit 36, and the connection units 44 and 46. Although details will be described later, the socket 22 is electrically connected to the switching unit 32 and the connection unit 38, the socket 24 is electrically connected to the switching unit 34 and the connection unit 40, and the socket 26 is electrically connected to the detection unit 36 ​​and the connection unit 42. In this embodiment, the operation signal transmitted from the remote control device 14 is received by the receiving unit 30. As will be described later, the control unit 28 controls the switching units 32 and 34 based on the operation signal received by the receiving unit 30.

[0029] The functions of the control unit 28 may be realized by hardware such as an electronic circuit, or may be realized by a CPU and a program. In this embodiment, each part of the relay unit 12 (the control unit 28, the receiving unit 30, the switching units 32 and 34, the detection unit 36, etc.) is operated by power supplied from a power source (battery) (not shown) provided in the housing 20, for example.

[0030] The cable unit 16 includes a plurality of cables 60a, 60b, and 60c. In this embodiment, the cables 60a, 60b, and 60c have the same configuration, and each of them has a cable main body 61 and a plug 62. The plug 62 is provided at one end of the cable main body 61. Each of the plugs 62 has a pair of terminals 62a.

[0031] The other end of the cable main body 61 is configured to be detachable from the relay unit 12 (connections 38, 40, 42). Although not shown in the drawings, for example, the connections 38, 40, 42 may be sockets, and the other end of the cable main body 61 may be provided with plugs that are detachable from the connections 38, 40, 42.

[0032] The fuse box 100 has a plurality of sockets 102 and a plurality of fuses 104. Each socket 102 has a pair of terminals 102a. Each fuse 104 has a pair of terminals 104a and a fuse element 104b provided between the pair of terminals 104a. In this embodiment, the socket 102 corresponds to the second socket.

[0033] FIG. 3 is a schematic diagram showing a state in which the relay unit 12 is used. As shown in FIG. 2 and FIG. 3, when the anti-theft device 10 is used, the relay unit 12 and the fuse box 100 are connected by the cable unit 16 (cables 60a, 60b, 60c). In this embodiment, for example, the fuse 104 is removed from a specific socket 102 of the fuse box 100, and the plug 62 of the cable 60a is inserted into the socket 102 from which the fuse 104 was removed. Also, the fuse 104 removed from the socket 102 into which the plug 62 of the cable 60a is inserted is inserted into the socket 22. Similarly, the fuse 104 is removed from a specific socket 102 of the fuse box 100, and the plug 62 of the cable 60b (cable 60c) is inserted into the socket 102. Also, the fuse 104 removed from the socket 102 into which the plug 62 of the cable 60b (cable 60c) is inserted is inserted into the socket 24 (socket 26).

[0034] Fig. 4 is a diagram showing an electrical connection relationship between the relay unit 12 and the fuse box 100. Note that in Fig. 4, for the sake of simplicity, the control unit 28 (see Fig. 3) is omitted from illustration, but as described above, the control unit 28 is electrically connected to the switching units 32, 34 and the detection unit 36.

[0035] 4, the switching unit 32 is connected to the socket 22 (one terminal 23a) via a wire 50d. The connection unit 38 is connected to the socket 22 (the other terminal 23a) via a wire 50e, and is connected to the switching unit 32 via a wire 50f. In this embodiment, the wires are provided, for example, on a substrate (not shown).

[0036] In this embodiment, the cutoff unit 70a is configured by the wirings 50d, 50e, and 50f, the socket 22, and the switching unit 32. In the cutoff unit 70a, the socket 22 corresponds to the first socket, the wirings 50d and 50f correspond to the first wiring unit, the wiring 50e corresponds to the second wiring unit, and the switching unit 32 corresponds to the first switching unit.

[0037] In the interrupter 70a, the fuse 104 is inserted into the socket 22, so that the pair of terminals 23a of the socket 22 are connected via the fuse 104. This electrically connects the wires 50d and 50e.

[0038] The switching unit 32 switches between energization and de-energization of the first wiring unit (wires 50d, 50f) under the control of the control unit 28. In this specification, switching between energization and de-energization of the wiring unit refers to switching between a state in which the wiring unit can be energized and a state in which the electricity supply to the wiring unit is cut off. The state of the switching unit that allows electricity to be supplied to the wiring unit is referred to as a connected state, and the state of the switching unit that cuts off the electricity supply to the wiring unit is referred to as a disconnected state. FIG. 4 shows the switching unit 32 in the disconnected state.

[0039] The switching unit 34 is connected to the socket 24 (one terminal 23a) via a wire 50g. The connection unit 40 is connected to the socket 24 (the other terminal 23a) via a wire 50h, and is connected to the switching unit 34 via a wire 50i.

[0040] In this embodiment, the cutoff unit 70b is configured by the wirings 50g, 50h, and 50i, the socket 24, and the switching unit 34. In the cutoff unit 70b, the socket 24 corresponds to the first socket, the wirings 50g and 50i correspond to the first wiring unit, the wiring 50h corresponds to the second wiring unit, and the switching unit 34 corresponds to the first switching unit.

[0041] As in the case of the interrupter 70a, in the interrupter 70b, a fuse 104 is inserted into the socket 24, so that a pair of terminals 23a of the socket 24 are connected via the fuse 104. This electrically connects the wire 50g and the wire 50h.

[0042] Like the switching unit 32, the switching unit 34 is controlled by the control unit 28 to switch between energization and non-energization of the first wiring portion (wires 50g, 50i).

[0043] The detection unit 36 ​​is connected to the socket 26 (one terminal 23a) via a wire 50j. The connection unit 42 is connected to the socket 26 (the other terminal 23a) via a wire 50k, and is connected to the detection unit 36 ​​via a wire 50l. In this embodiment, the socket 26 corresponds to the third socket, the wires 50j and 50l correspond to the third wiring portion, and the wire 50k corresponds to the fourth wiring portion.

[0044] When the fuse 104 is inserted into the socket 26, the pair of terminals 23a of the socket 26 are connected via the fuse 104. This electrically connects the wire 50j and the wire 50k.

[0045] The cable main body 61 of the cables 60a, 60b, and 60c has a pair of conductors 61a connected to a pair of terminals 62a. In this embodiment, the connection portions 38, 40, and 42 are each electrically connected to a pair of terminals 102a of the socket 102 via the pair of conductors 61a and the pair of terminals 62a.

[0046] In this embodiment, the first wiring portion (wires 50d, 50f) of the cutoff unit 70a is electrically connected to one terminal 102a of the socket 102 via one conductor 61a and one terminal 62a of the cable 60a. The second wiring portion (wire 50e) of the cutoff unit 70a is electrically connected to the other terminal 102a of the socket 102 via the other conductor 61a and the other terminal 62a of the cable 60a.

[0047] Similarly to the interrupter 70a, the first wiring portion (wires 50g, 50i) of the interrupter 70b is electrically connected to one terminal 102a of the socket 102 via one conductor 61a and one terminal 62a of the cable 60b. The second wiring portion (wire 50h) of the interrupter 70b is electrically connected to the other terminal 102a of the socket 102 via the other conductor 61a and the other terminal 62a of the cable 60b.

[0048] In this embodiment, when the fuse 104 is inserted into the socket 22 and the switching unit 32 is in a connected state, the pair of terminals 102a of the socket 102 into which the plug 62 of the cable 60a is inserted is electrically connected via the cable 60a, the interrupter 70a, and the fuse 104 inserted into the socket 22. On the other hand, even if the fuse 104 is inserted into the socket 22, when the switching unit 32 is in a disconnected state, the electrical connection of the pair of terminals 102a of the socket 102 into which the plug 62 of the cable 60a is inserted is interrupted.

[0049] Similarly, when the fuse 104 is inserted into the socket 24 and the switching unit 34 is in the connected state, the pair of terminals 102a of the socket 102 into which the plug 62 of the cable 60b is inserted are electrically connected via the cable 60b, the interrupter 70b, and the fuse 104 inserted into the socket 24. On the other hand, even if the fuse 104 is inserted into the socket 24, when the switching unit 34 is in the disconnected state, the electrical connection of the pair of terminals 102a of the socket 102 into which the plug 62 of the cable 60b is inserted is interrupted.

[0050] The third wiring portion (wires 50j, 50l) is electrically connected to one terminal 102a of the socket 102 via one conductor 61a and one terminal 62a of the cable 60c. Moreover, the fourth wiring portion (wire 50k) is electrically connected to the other terminal 102a of the socket 102 via the other conductor 61a and the other terminal 62a of the cable 60c.

[0051] In this embodiment, the detection unit 36 ​​detects the voltage or current supplied to the third wiring portion (wirings 50j, 50l). Note that the detection unit 36 ​​may be configured as a known voltmeter or ammeter, and therefore detailed description of the detection unit 36 ​​will be omitted.

[0052] 3, for example, an alarm device 52 for notifying an alert is connected to the connection unit 44. In this embodiment, for example, a lamp is used as the alarm device 52. In addition, a buzzer 54 is connected to the connection unit 46.

[0053] In this embodiment, when the switching unit 32 is in a disconnected state and the detection unit 36 ​​detects a voltage (or current) equal to or greater than a preset value (threshold), the control unit 28 activates the alarm 52. In this embodiment, the control unit 28 turns on or blinks a lamp serving as the alarm 52. Note that in this embodiment, the threshold is set to a level that can detect the voltage (or current) supplied from the accessory power supply. In other words, the threshold is set to a level that can detect the on / off of the accessory power supply.

[0054] In addition, in this embodiment, when the switching units 32, 34 are set to the connected state and the detection unit 36 ​​detects a voltage (or current) equal to or greater than the threshold value, the control unit 28 stops the switching units 32, 34 from switching between energization and non-energization.

[0055] Furthermore, the control unit 28 drives the buzzer 54 based on an operation signal from the remote control device 14 so that the buzzer 54 emits a sound corresponding to the state (disconnected state, connected state) of the switching units 32, 34. In this embodiment, when an operation signal for setting the switching units 32, 34 to the disconnected state is transmitted from the remote control device 14 to the relay unit 12, the buzzer 54 emits a sound notifying that the switching units 32, 34 have been switched to the disconnected state or that the switching units 32, 34 have already been set to the disconnected state. Furthermore, when an operation signal for setting the switching units 32, 34 to the connected state is transmitted from the remote control device 14 to the relay unit 12, the buzzer 54 emits a sound notifying that the switching units 32, 34 have been switched to the connected state or that the switching units 32, 34 have already been set to the connected state.

[0056] (Action and effect) In this embodiment, for example, the fuse 104 for door lock is removed from the fuse box 100 and inserted into the socket 22, and the plug 62 of the cable 60a is inserted into the socket 102 from which the fuse 104 was removed. The fuse 104 for brake lamps (stop lamps) is removed from the fuse box 100 and inserted into the socket 24, and the plug 62 of the cable 60b is inserted into the socket 102 from which the fuse 104 was removed. Furthermore, the fuse 104 to which the accessory power is supplied is removed from the fuse box 100 and inserted into the socket 26, and the plug 62 of the cable 60c is inserted into the socket 102 from which the fuse 104 was removed. In the following, the operation and effect of the anti-theft device 10 according to this embodiment will be described assuming that the relay unit 12 and the fuse box 100 are connected as described above.

[0057] When using the anti-theft device 10 according to this embodiment, for example, the ignition power supply and accessory power supply of the vehicle 1 are turned off and the doors are locked, and the remote control device 14 is operated by the user. The remote control device 14 transmits an operation signal to the relay unit 12 in response to the user's operation. In this embodiment, the remote control device 14 transmits an operation signal for switching the switching units 32, 34 to a connected state and an operation signal for switching the switching units 32, 34 to a disconnected state to the relay unit 12 in response to the user's operation.

[0058] When the receiver 30 of the relay unit 12 receives an operation signal for switching the switches 32, 34 to the disconnected state from the remote control device 14, the controller 28 sets the switches 32, 34 to the disconnected state. This cuts off the current flow through the first wiring parts (wires 50d, 50f and wires 50g, 50i) of the cutoff units 70a, 70b.

[0059] In this embodiment, the power supply to the drive device for driving the door lock is cut off by cutting off the current flow to the first wiring section (wires 50d, 50f) of the cutoff section 70a. This makes it possible to prevent the door lock from being released even if the control system of the vehicle 1 is invaded from the outside by a method such as a CAN invader or relay attack. In addition, since the power supply to the drive device for driving the door lock is cut off, the door lock cannot be released even if a key emulator is used. As a result, theft of the vehicle 1 can be prevented.

[0060] Also, in this embodiment, the power supply to the brake lamps (stop lamps) is cut off by cutting off the current flow to the first wiring section (wirings 50g, 50i) of the cutoff section 70b. In this case, even if a person (a thief) who is trying to steal the vehicle 1 enters the inside of the vehicle 1 and operates the brake pedal, the control system cannot recognize that the brake pedal has been operated. This makes it possible to prevent, for example, the prime mover (engine, motor of an EV system or hybrid system, etc.) from being started or the shift lever from being operated (changed from P range). As a result, theft of the vehicle 1 can be prevented.

[0061] Thus, according to the anti-theft device 10 of this embodiment, the relay unit 12 is connected to the fuse box 100, thereby preventing the theft of the vehicle 1. In this case, the driver's foot space is not narrowed compared to a conventional brake pedal lock that physically prevents the operation of the brake pedal. This makes it possible to prevent the theft of the vehicle 1 without affecting the comfort of driving.

[0062] Furthermore, the anti-theft device 10 according to this embodiment can prevent theft of the vehicle 1 by controlling the power supply to the socket 102 of the fuse box 100. That is, the anti-theft device 10 according to this embodiment can prevent theft of the vehicle 1 without being affected by the configuration of the ECU or control network (for example, a network built with CAN) installed in the vehicle 1. This allows a common anti-theft device 10 to be used in many vehicle models. Furthermore, since there is no need to analyze the ECU and control network of the vehicle 1, product design of the anti-theft device 10 becomes easier.

[0063] In addition, in this embodiment, if a thief turns on the accessory power supply of the vehicle 1 by some method while the switching units 32, 34 are set to the disconnected state, the detection unit 36 ​​detects that the accessory power supply has been turned on, and an alert is issued by the alarm 52. This makes it possible to prevent theft of the vehicle 1.

[0064] In addition, in this embodiment, when the user operates the remote control device 14, the buzzer 54 emits a sound corresponding to the operation of the remote control device 14. This allows the user to easily grasp the state (connected state or disconnected state) of the switching units 32, 34.

[0065] When using the vehicle 1, the user only needs to operate the remote control device 14 to switch the switching units 32, 34 to the connected state. This allows the fuse 104 inserted into the sockets 22, 24 to function normally. In this embodiment, when the detection unit 36 ​​detects a voltage (or current) equal to or greater than a preset threshold, the control unit 28 stops switching the switching units 32, 34 to the disconnected state. This makes it possible to prevent the switching units 32, 34 from being switched to the disconnected state while the vehicle 1 is traveling.

[0066] (Modification) In the above embodiment, the power source for operating the relay unit 12 is provided in the relay unit 12, but power may be supplied to the relay unit 12 from outside the relay unit 12. Specifically, power for operating the relay unit 12 may be taken from the socket 102 to which a power source is constantly supplied in the fuse box 100. In this case, for example, as shown in FIG. 5, a wiring section 56 for taking out power from the wirings 50e and 50f may be formed in the relay unit 12. Although not shown, a cable for taking out power from a portion other than the fuse box 100 may be provided in the relay unit 12. For example, a cable connectable to a battery (vehicle battery) mounted on the vehicle 1 may be provided in the relay unit 12, and power may be taken from the vehicle battery. For example, power for operating the relay unit 12 may be taken from a wiring (such as a wiring for a power window) to which a power source is constantly supplied, using an electrotap or the like.

[0067] In the above embodiment, the alarm 52 and the buzzer 54 are provided so as to be detachable from the relay unit 12, but the alarm 52 and the buzzer 54 may also be fixed to the relay unit 12 so as not to be detachable.

[0068] In the above embodiment, a lamp is used as the alarm 52, but other devices may be used as the alarm. For example, a buzzer 54 may be used as the alarm, and a warning sound may be emitted from the buzzer 54.

[0069] In the above embodiment, the cable unit 16 (cables 60a, 60b, 60c) is provided detachably to the relay unit 12. However, the cable unit 16 may be fixed to the relay unit 12 so that it cannot be detached.

[0070] In the above embodiment, the switching units 32, 34 are provided in the first wiring portion (wires 50d, 50f and wires 50g, 50i), but the switching units 32, 34 may be provided in the second wiring portion (wires 50e, 50h). In the above embodiment, the detection unit 36 ​​is provided in the third wiring portion (wires 50j, 50l), but the detection unit 36 ​​may be provided in the fourth wiring portion (wire 50k).

[0071] In the above embodiment, the relay unit 12 has a plurality of cut-off parts 70a, 70b, but the number of cut-off parts provided in the relay unit may be one, or may be three or more. Also, for example, the relay unit may be configured so that an extension relay unit having a cut-off part can be connected. Fig. 6 is a diagram showing a relay unit to which an extension relay unit is connected.

[0072] As shown in Fig. 6, in this embodiment, the relay unit 12 includes a connection portion 48 for connecting the extension relay unit 18. The extension relay unit 18 includes a housing 20a, a cutoff portion 70c provided in the housing 20a, a cable 60d, and a cable 58. The cable 60d has a similar configuration to the cable 60a, and is provided detachably with respect to the housing 20a. The cable 58 is configured to be detachably attached to the connection portion 48. In this embodiment, the cutoff portion 70c and the control portion 28 of the relay unit 12 are electrically connected to each other via the cable 58.

[0073] FIG. 7 is a schematic diagram showing the configuration of the cable 60d and the cutoff unit 70c. In this embodiment, the cable 60d is configured similarly to the cable 60a shown in FIG. 4, and has a cable main body 61 and a plug 62. The cutoff unit 70c is configured similarly to the cutoff unit 70a shown in FIG. 4. Specifically, the cutoff unit 70c has the wires 50a, 50b, and 50c, the socket 22a, and the switching unit 32a, which are configured similarly to the wires 50d, 50e, and 50f, the socket 22, and the switching unit 32 of the cutoff unit 70a. In this embodiment, the socket 22a corresponds to the fourth socket, the wires 50a and 50c correspond to the fifth wiring unit, the wire 50b corresponds to the sixth wiring unit, and the switching unit 32a corresponds to the second switching unit. The switching unit 32a is electrically connected to the control unit 28 via the cable 58, and switches between energization and de-energization of the fifth wiring unit (wires 50a and 50c) by being controlled by the control unit 28.

[0074] For example, in the case where another fuse box is provided in a location other than the fuse box 100 in the vehicle 1, the extension relay unit 18 can be connected to the relay unit 12, and the extension relay unit 18 can be connected to the other fuse box by the cable 60d. For example, in the case where a fuse for a back door lock is provided in a fuse box in a location other than the fuse box 100, the fuse for the back door lock is removed from the fuse box and inserted into the socket 22a of the extension relay unit 18. Furthermore, the plug 62 of the cable 60d connected to the extension relay unit 18 is inserted into the socket from which the fuse for the back door lock was removed. In this state, the switching unit 32a is set to a disconnected state, thereby preventing the back door from being unlocked. Although a detailed description is omitted, the relay unit 12 may be configured so that a plurality of extension relay units 18 can be connected. Furthermore, a plurality of cutoff units may be provided in the extension relay unit 18. Furthermore, the second switching unit (switching unit 32a) may be provided in the sixth wiring unit (wiring 50b).

[0075] In the above-described embodiment, the control unit 28 sets the multiple switching units of the multiple interrupting units to the same state (disconnected state or connected state), but in response to a user operation, the control unit 28 may set some of the multiple switching units to the disconnected state and set the other switching units to the connected state.

[0076] In the above embodiment, the on / off state of the accessory power supply is detected by detecting the voltage (or current) supplied from the socket 102 of the fuse box 100 by the detection unit 36, but the configuration for detecting the on / off state of the accessory power supply is not limited to the above example. Specifically, the relay unit 12 may be provided with a detection wiring section that can be electrically connected to the accessory power supply, and the detection unit 36 ​​may be provided on the detection wiring section. In this case, for example, the detection wiring section is electrically connected to the cigarette lighter socket using a cable or the like, and the voltage (or current) supplied from the cigarette lighter socket is detected by the detection unit 36, thereby detecting the on / off state of the accessory power supply. Also, for example, in the relay unit 12 shown in FIG. 3 and FIG. 4, the socket 26 may not be provided, and the wirings 50j, 50k (see FIG. 4) may be used as one wiring, and the wirings 50j, 50k, 50l may be used as the detection wiring section. In such a configuration, by using a plug equipped with a fuse element and a wiring for extracting power in place of the plug 62 in the cable 60c, the accessory power supply can be extracted from a specific socket 102 while the plug is functioning as a fuse. In this case as well, since the voltage (or current) supplied from the specific socket 102 can be detected by the detection unit 36, it is possible to detect whether the accessory power supply is on or off.

[0077] The remote control device 14 may be held and operated by a user, or may be attached to an arbitrary location of the vehicle 1 so that the user can operate it from outside the vehicle 1. In the above-described embodiment, the remote control device 14 is configured to be capable of wireless communication with the relay unit 12, but the relay unit 12 and the remote control device 14 may be configured to be capable of wired communication. In this case, the remote control device 14 is attached to an arbitrary location of the vehicle 1 so that the user can operate it from outside the vehicle 1, for example.

[0078] In the above embodiment, the states of the switching units 32, 34 are switched by operating the common remote control device 14, but a remote control device may be provided for each of the switching units 32, 34. For example, the remote control device for switching the switching unit 32 may be arranged so as to be operable from outside the vehicle 1, and the remote control device for switching the switching unit 34 may be arranged inside the vehicle 1. In this case, for example, the remote control device provided outside the vehicle 1 can be operated to switch whether or not electricity is applied to the fuse 104 for door locks, and the remote control device provided inside the vehicle 1 can be operated to switch whether or not electricity is applied to the fuse 104 for brake lamps. By providing a plurality of remote control devices in this way, the engine of the vehicle 1 cannot be started unless the switching units are operated both outside and inside the vehicle 1, and theft of the vehicle 1 can be more sufficiently prevented.

[0079] In the above embodiment, the control unit 28 switches the states of the switching units 32 and 34 based on the operation signal from the remote control device 14. However, the anti-theft device may not include a remote control device and a control unit. Specifically, the anti-theft device according to the embodiment of the present invention may include a first socket having a pair of terminals, a first wiring unit electrically connected to one terminal of the first socket and electrically connectable to a second socket of a fuse box provided in a vehicle, a second wiring unit electrically connected to the other terminal of the first socket and electrically connectable to the second socket, and a first switching unit provided in the first wiring unit or the second wiring unit and switching whether or not the first wiring unit or the second wiring unit is energized. Therefore, the anti-theft device may be configured so that the state of the first switching unit can be switched by a user directly operating the first switching unit. FIG. 8 is a diagram showing an example of an anti-theft device not including a remote control device and a control unit.

[0080] 8 includes a socket 80, wires 82a, 82b, and 82c, a switching unit 84, and a plug 86. The socket 80 is configured similarly to the above-described socket 22, and includes a pair of terminals 80a and 80b. The plug 86 is configured similarly to the above-described plug 62, and includes a pair of terminals 86a and 86b.

[0081] One terminal 80a of the socket 80 and the switching unit 84 are electrically connected via a wire 82a. The other terminal 80b of the socket 80 and one terminal 86a of the plug 86 are electrically connected via a wire 82b. The other terminal 86b of the plug 86 and the switching unit 84 are electrically connected via a wire 82c. In this embodiment, the socket 80 corresponds to the first socket, the wires 82a and 82c correspond to the first wiring portion, the wire 82b corresponds to the second wiring portion, and the switching unit 84 corresponds to the first switching portion.

[0082] The switching unit 84 switches between energization and de-energization of the first wiring unit (wires 82a, 82c) by being operated by a user. The switching unit 84 is attached to an arbitrary location of the vehicle 1 so that the user can operate it from outside the vehicle 1, for example.

[0083] In this embodiment, for example, the fuse 104 for the door lock is removed from the fuse box 100 of the vehicle 1 and inserted into the socket 80, and the plug 86 is inserted into the socket 102 from which the fuse 104 was removed. When using the anti-theft device 10a, for example, the ignition power supply and the accessory power supply of the vehicle 1 are turned off, and the switching unit 84 is set to the disconnected state with the doors locked. This cuts off the power supply to the first wiring unit (wires 82a, 82c), and cuts off the power supply to the drive device for driving the door lock. As a result, theft of the vehicle 1 can be prevented.

[0084] A plurality of anti-theft devices 10a may be provided for the vehicle 1. In this case, for example, the switching unit 84 of one anti-theft device 10a may be provided so that the user can operate it from outside the vehicle 1 as described above, and the switching unit 84 of another anti-theft device 10a may be disposed inside the vehicle 1 so that the user can operate it inside the vehicle 1.

[0085] For the anti-theft device 10a in which the switching unit 84 is provided inside the vehicle 1, for example, the fuse 104 for the brake lamp is removed from the fuse box 100 of the vehicle 1 and inserted into the socket 80, and the plug 86 is inserted into the socket 102 from which the fuse 104 was removed. Thereafter, the ignition power supply and the accessory power supply of the vehicle 1 are turned off, and the switching unit 84 is set to the disconnected state. This cuts off the electricity supply to the first wiring unit (wires 82a, 82c), and cuts off the power supply to the brake lamp. As a result, it is possible to prevent the prime mover from being started or the shift lever from being operated, and it is possible to prevent the vehicle 1 from being stolen. [Industrial Applicability]

[0086] According to the present invention, an anti-theft device is provided that can prevent vehicle theft without affecting driving comfort. [Explanation of symbols]

[0087] 1 vehicle 10,10a Anti-theft device 12 Relay Unit 14 Remote control device 16 Cable unit 18 Expansion Relay Unit 22,22a,24,26,102 Sockets 23a, 62a, 80a, 80b, 86a, 86b, 104a terminals 28 Control Unit 32,34 Switching section 36 Detection unit 50a~50l,82a~82c Wiring 60a~60d cable 70a~70c Breaking section 100 Fuse Box 104 Fuse

Claims

1. a first socket having a pair of terminals; a first wiring portion electrically connected to one terminal of the first socket and electrically connectable to a second socket of a fuse box provided in a vehicle; a second wiring portion electrically connected to the other terminal of the first socket and electrically connectable to the second socket; a first switching unit that is provided to the first wiring portion or the second wiring portion and switches between energization and deenergization of the first wiring portion or the second wiring portion, the first socket is configured to be able to insert a fuse removed from the second socket of the fuse box; the first wiring portion and the second wiring portion are configured to be electrically connectable to a cable having a plug that can be inserted into the second socket; Vehicle anti-theft device.

2. The vehicle theft prevention device according to claim 1 , further comprising a control unit that controls the first switching unit based on an operation signal from a remote control device.

3. a relay unit including the first socket, the first wiring section, the second wiring section, the first switching section, and the control section; 3. The vehicle anti-theft device according to claim 2, further comprising: a cable that is detachable or fixed to the relay unit and electrically connects the first wiring portion and the second wiring portion to the second socket.

4. 2. The vehicle anti-theft device according to claim 1, wherein the first socket is configured to be able to receive a fuse that is insertable into the second socket.

5. The vehicle anti-theft device according to claim 2 , wherein the control unit is operable by power supplied from a power source provided in the vehicle.

6. a third socket having a pair of terminals; a third wiring portion electrically connected to one terminal of the third socket and electrically connectable to the second socket; a fourth wiring portion electrically connected to the other terminal of the third socket and electrically connectable to the second socket; 3. The vehicle anti-theft device according to claim 2, further comprising: a detection unit provided to the third wiring portion or the fourth wiring portion and configured to detect a voltage or a current supplied to the third wiring portion or the fourth wiring portion.

7. Further comprising a connection part to which an alarm can be connected, 7. The vehicle anti-theft device of claim 6, wherein the control unit activates the alarm connected to the connection unit when the detection unit detects a voltage or current equal to or greater than a predetermined value while the first switching unit cuts off current to the first wiring unit or the second wiring unit.

8. the fuse box has a plurality of the second sockets, The vehicle anti-theft device according to claim 6 , wherein the third wiring portion and the fourth wiring portion are electrically connected to the second socket, of the plurality of second sockets, to which an accessory power source is supplied.

9. A detection wiring portion; The vehicle anti-theft device according to claim 2 , further comprising a detection unit that detects a voltage or a current supplied to the detection wiring unit.

10. 10. The anti-theft device for a vehicle as described in claim 6 or 9, wherein when the first switching unit enables current to flow through the first wiring unit or the second wiring unit and the detection unit detects a voltage or current equal to or greater than a predetermined value, the control unit stops the first switching unit from switching the current flow.

11. A plurality of interrupters are provided. each of the plurality of interrupting units includes the first socket, the first wiring unit, the second wiring unit, and the first switching unit; The vehicle anti-theft device according to claim 2 , wherein the control unit controls the first switching units of the plurality of interrupting units.

12. an extension relay unit electrically connected to the relay unit; the extension relay unit includes a fourth socket having a pair of terminals, a fifth wiring section electrically connected to one terminal of the fourth socket and electrically connectable to the second socket, a sixth wiring section electrically connected to the other terminal of the fourth socket and electrically connectable to the second socket, and a second switching section provided on the fifth wiring section or the sixth wiring section and switching between energization and de-energization of the fifth wiring section or the sixth wiring section, The theft prevention device for a vehicle according to claim 3 , wherein the control unit controls the first switching unit and the second switching unit based on the operation signal from the remote control device.

13. a connection section to which a buzzer that emits a sound according to a state of the first switching section can be connected; 3. The vehicle anti-theft device according to claim 2, wherein the control unit drives the buzzer connected to the connection unit based on an operation signal from the remote control device.

14. the fuse box has a plurality of the second sockets, 2. The vehicle anti-theft device according to claim 1, wherein the first wiring portion and the second wiring portion are electrically connected to the second socket for door lock or brake lamp among the plurality of second sockets.

Images