Anti-theft device for vehicle

Abstract

To provide an anti-theft device capable of preventing theft of a vehicle without affecting comfortableness of driving.SOLUTION: The anti-theft device 10 includes a relay unit 12 connectable to the fuse box 100. The relay unit 12 includes a breaking unit 70a and a control unit 28. The blocking unit 70a includes a socket 22 having a pair of terminals 23a, a first wiring unit (wiring 23a, 50f) electrically connected to one of the terminals 50d of the socket 22, a second wiring unit (wiring 23a) electrically connected to the other of the terminals 50e of the socket 22, and a switching unit 32 provided in the first wiring unit and configured to switch whether or not to energize the first wiring unit. The control unit 28 controls the switching unit 32 based on the operation signal from the remote operation device 14.SELECTED DRAWING: Figure 4

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 doors and start the prime mover (engine, motor) by infiltrating the vehicle's control system, which is built using a CAN (Controller Area Network), from outside the vehicle. It is difficult to completely prevent CAN invaders from invading the CAN, so a common anti-theft measure is to physically prevent the vehicle from moving (see, for example, Patent Document 1).

[0003] The brake pedal lock disclosed in Patent Document 1 is attached to the footwell of a vehicle and can change the range of movement of the brake pedal. When using the brake pedal lock of Patent Document 1, for example, the range of movement 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 typical vehicle that starts the engine with the brake pedal depressed. As a result, vehicle theft can be prevented. [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 installed near the brake pedal, which narrows the driver's foot space and reduces driving comfort.

[0006] SUMMARY OF THE INVENTION It is therefore an object of the present invention 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 non-energization 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 accept a fuse that is pluggable into the second socket.

[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 in 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 the flow of electricity to the first wiring unit or the second wiring unit.

[0014] (8) The fuse box has 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 the voltage or current supplied to the detection wiring unit.

[0016] (10) When the first switching unit allows 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 whether to allow current to flow through the first wiring unit or the second wiring unit.

[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 interrupting units.

[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 the 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 has a plurality of the second sockets, The first wiring portion and the second wiring portion may be electrically connected to the second socket for door lock or brake lamp among the plurality of second sockets. [Effects of the Invention]

[0021] According to the present invention, vehicle theft can be prevented without affecting driving comfort. [Brief explanation 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. [Figure 2] FIG. 2 is a schematic diagram showing a relay unit, a cable unit, and a fuse box. [Figure 3] FIG. 3 is a schematic diagram showing the anti-theft device (relay unit) in use. [Figure 4] FIG. 4 is a diagram showing the electrical connection relationship between the relay unit and the fuse box. [Figure 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 shows a modified example of the anti-theft device. DETAILED DESCRIPTION OF THE INVENTION

[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 one 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 able to wirelessly communicate 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 able to transmit 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 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 seen from outside the vehicle 1.

[0026] 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, and 26, a control unit 28, a receiving unit 30, a plurality of switching units 32 and 34, a detection unit 36, and a plurality of connection units 38, 40, 42, 44, and 46.

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

[0028] The control unit 28, the receiving unit 30, the switching units 32 and 34, and the detection unit 36 ​​are provided within 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. As will be described in detail 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, an 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 (control unit 28, receiving unit 30, switching units 32 and 34, detection unit 36, etc.) operates 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 includes a cable main body 61 and a plug 62. The plug 62 is provided at one end of the cable main body 61. Each plug 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 connection portions 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 connection portions 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 the relay unit 12 in use. As shown in FIGS. 2 and 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. Furthermore, the fuse 104 removed from the socket 102 into which the plug 62 of the cable 60a was 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 that socket 102. Furthermore, the fuse 104 removed from the socket 102 into which the plug 62 of the cable 60b (cable 60c) was inserted is inserted into the socket 24 (socket 26).

[0034] Fig. 4 is a diagram showing the 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 not shown, 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 on, for example, a substrate (not shown).

[0036] In this embodiment, the cutoff unit 70a is configured by the wires 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 wires 50d and 50f correspond to the first wiring unit, the wire 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 energizing and de-energizing the first wiring unit (wirings 50d, 50f) under the control of the control unit 28. In this specification, switching between energizing and de-energizing the wiring unit refers to switching between a state in which the wiring unit is energized and a state in which the wiring unit is de-energized. The state of the switching unit that allows the wiring unit to be energized is referred to as a connected state, and the state of the switching unit that de-energizes the wiring unit is referred to as a disconnected state. Figure 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 interrupter 70b is configured by the wires 50g, 50h, and 50i, the socket 24, and the switching unit 34. In the interrupter 70b, the socket 24 corresponds to the first socket, the wires 50g and 50i correspond to the first wiring unit, the wire 50h corresponds to the second wiring unit, and the switching unit 34 corresponds to the first switching unit.

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

[0042] Similar to the switching unit 32, the switching unit 34 is controlled by the control unit 28 to switch between energizing and de-energizing the first wiring unit (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 each 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 (wirings 50d and 50f) of the interrupter 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 (wiring 50e) of the interrupter 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 (wirings 50g and 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 (wiring 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 the 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 the 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 (wirings 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. The fourth wiring portion (wiring 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 issuing 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 the 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 magnitude that can detect the voltage (or current) supplied from the accessory power supply. In other words, the threshold is set to a magnitude 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) above 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 indicating that the switching units 32, 34 have been switched to the disconnected state or that the switching units 32, 34 are already 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 indicating that the switching units 32, 34 have been switched to the connected state or that the switching units 32, 34 are already set to the connected state.

[0056] (Action and effect) In this embodiment, for example, the fuse 104 for the door locks 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. Also, the fuse 104 for the 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 accessory power is supplied from the fuse box 100 is removed 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. Below, 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, the doors are locked, and then the user operates the remote control device 14. In response to the user's operation, the remote control device 14 transmits an operation signal to the relay unit 12. In this embodiment, in response to the user's operation, the remote control device 14 transmits an operation signal to the relay unit 12 for switching the switching units 32, 34 to a connected state and an operation signal to switch the switching units 32, 34 to a disconnected state.

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

[0059] In this embodiment, the power supply to the drive device for operating the door locks is cut off by cutting off the power supply to the first wiring section (wires 50d, 50f) of the cutoff unit 70a. This prevents the door locks from being unlocked even if the control system of the vehicle 1 is invaded from the outside using methods such as a CAN invader or relay attack. Furthermore, because the power supply to the drive device for operating the door locks is cut off, the door locks cannot be unlocked even if a key emulator is used. As a result, theft of the vehicle 1 can be prevented.

[0060] In this embodiment, the power supply to the brake lamps (stop lamps) is cut off by cutting off the power to the first wiring section (wirings 50g, 50i) of the cutoff section 70b. In this case, even if a person (a thief) attempting to steal the vehicle 1 enters 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 (changing from P range). As a result, theft of the vehicle 1 can be prevented.

[0061] As described above, with the anti-theft device 10 according to this embodiment, theft of the vehicle 1 can be prevented by connecting the relay unit 12 to the fuse box 100. In this case, the driver's foot space is not narrowed as compared to a conventional brake pedal lock that physically prevents the brake pedal from being operated. This makes it possible to prevent theft of the vehicle 1 without affecting driving comfort.

[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. In other words, 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 using 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 is easier.

[0063] In addition, in this embodiment, if a thief somehow turns on the accessory power supply of the vehicle 1 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 deter 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 understand the state (connected state or disconnected state) of the switching units 32, 34.

[0065] When using the vehicle 1, the user simply operates 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 prevents the switching units 32, 34 from being switched to the disconnected state while the vehicle 1 is traveling.

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

[0067] In the above-described 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 device 52, but other devices may be used as the alarm device. For example, a buzzer 54 may be used as the alarm device, 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 so as to be detachable from the relay unit 12, but the cable unit 16 may be fixed to the relay unit 12 so as not to be detachable.

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

[0071] In the above embodiment, the relay unit 12 has been described as having a plurality of breakers 70a, 70b, but the number of breakers provided in the relay unit may be one, or three or more. Furthermore, for example, the relay unit may be configured so that an extension relay unit equipped with a breaker 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 breaker 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 detachably provided to the housing 20a. The cable 58 is detachably configured to be attached to the connection portion 48. In this embodiment, the breaker 70c and the control portion 28 of the relay unit 12 are electrically connected via the cable 58.

[0073] FIG. 7 is a schematic diagram showing the configuration of a cable 60d and a circuit breaker 70c. In this embodiment, the cable 60d is configured similarly to the cable 60a shown in FIG. 4 and includes a cable main body 61 and a plug 62. The circuit breaker 70c is configured similarly to the circuit breaker 70a shown in FIG. 4. Specifically, the circuit breaker 70c includes wires 50a, 50b, and 50c, a socket 22a, and a switching unit 32a, which are configured similarly to the wires 50d, 50e, and 50f, the socket 22, and the switching unit 32 of the circuit breaker 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 a cable 58 and, under the control of the control unit 28, switches between energizing and de-energizing the fifth wiring unit (wires 50a and 50c).

[0074] For example, if another fuse box is provided in a location separate from 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 via the cable 60d. For example, if a fuse for a tailgate lock is provided in a fuse box located separate from the fuse box 100, the fuse for the tailgate 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 tailgate lock fuse was removed. In this state, the switching unit 32a can be set to a disconnected state to prevent the tailgate from being unlocked. Note that, although detailed description is omitted, the relay unit 12 may be configured to allow connection of multiple extension relay units 18. Furthermore, the extension relay unit 18 may be provided with multiple breakers. Furthermore, the second switching unit (switching unit 32a) may be provided in the sixth wiring unit (wiring 50b).

[0075] In the above embodiment, the control unit 28 has been described as setting 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 the other switching units to the connected state.

[0076] In the above-described embodiment, the on / off state of the accessory power supply is detected by the detection unit 36 ​​detecting the voltage (or current) supplied from the socket 102 of the fuse box 100. However, 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 electrically connectable 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 may be electrically connected to a cigarette lighter socket using a cable or the like, and the voltage (or current) supplied from the cigarette lighter socket may be detected by the detection unit 36, thereby detecting the on / off state of the accessory power supply. Furthermore, for example, in the relay unit 12 shown in FIGS. 3 and 4, the socket 26 may be omitted, and the wirings 50j and 50k (see FIG. 4) may be combined into one wiring, with the wirings 50j, 50k, and 50l used as the detection wiring section. In such a configuration, by using a plug equipped with a fuse element and a power extraction wiring instead of the plug 62 in the cable 60c, the accessory power supply can be extracted from a specific socket 102 while the plug functions as a fuse. In this case as well, the voltage (or current) supplied from the specific socket 102 can be detected by the detection unit 36, so that the on / off state of the accessory power supply can be detected.

[0077] The remote control device 14 may be held and operated by a user, or may be attached to any location on 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 any location on the vehicle 1 so that the user can operate it from outside the vehicle 1, for example.

[0078] In the above-described embodiment, the states of the switching units 32, 34 are switched by operating the common remote control device 14. However, 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 may be operated to switch the energization of the door lock fuse 104, and the remote control device provided inside the vehicle 1 may be operated to switch the energization of the brake lamp fuse 104. By providing multiple remote control devices in this way, the engine of the vehicle 1 cannot be started unless the switching units are operated both inside and outside the vehicle 1, thereby more effectively preventing theft of the vehicle 1.

[0079] In the above-described embodiment, the control unit 28 switches the states of the switching units 32 and 34 based on an operation signal from the remote control device 14. However, the anti-theft device may not necessarily 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 the 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 on the first wiring unit or the second wiring unit and switching between energization and de-energization of the first wiring unit or the second wiring unit. 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 illustrating 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 unit, the wire 82b corresponds to the second wiring unit, and the switching unit 84 corresponds to the first switching unit.

[0082] The switching unit 84 switches between energizing and de-energizing the first wiring unit (wirings 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 door lock fuse 104 is removed from the fuse box 100 of the vehicle 1 and inserted into the socket 80, and then 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 accessory power supply of the vehicle 1 are turned off, the doors are locked, and the switching unit 84 is set to the disconnected state. 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] It should be noted that multiple 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 it can be operated by a user 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 it can be operated by a user inside the vehicle 1.

[0085] In the case of an 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 then a plug 86 is inserted into the socket 102 from which the fuse 104 was removed. Then, 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 power 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 engine from being started or the shift lever from being operated, thereby preventing 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 devices 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 Breaker 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 unit or the second wiring unit and that switches between energization and non-energization of the first wiring unit or the second wiring unit, Vehicle anti-theft devices.

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 from 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 accept a fuse that is insertable into the second socket.

5. 3. 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 on 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 according to 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 the power 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 accessory power 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 vehicle anti-theft device according to claim 6, wherein when the first switching unit enables the first wiring unit or the second wiring unit to be energized 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 whether to energize or not.

11. having a plurality of interrupting portions, 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. further comprising 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 vehicle anti-theft device 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 part to which a buzzer that emits a sound according to the state of the first switching part 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.

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