JP3108073U - Anti-theft device for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively prevent theft of a car by intimidating a person other than the user by preventing a person other than the user from starting the engine of the car and operating a horn.
In a normal state in which the hidden switches 13 and 14 are not turned on and the switching relay R1 is not switched, power is supplied from the ignition switch 2 to the horn 7 via the switching relay R1 when the ignition switch 2 is turned on. The horn 7 is blown without operating the cell motor 3. On the other hand, by turning on the hidden switches 13 and 14 and switching the switching relay R1, when the ignition switch 2 is turned on, power is supplied from the ignition switch 2 to the cell motor 3 without causing the horn 7 to blow. 3 is activated.
[Selection] Figure 1

Description

  The present invention relates to an anti-theft device for automobiles, and in particular, prevents a person other than the user from starting the automobile engine and activates a horn to effectively threaten the person other than the user to effectively steal the automobile. The present invention relates to an antitheft device for automobiles.

In recent years, theft of automobiles, mainly luxury cars, has become a problem, and various antitheft devices for automobiles have been proposed. As this type of technology, for example, there is a technology described in Patent Document 1.
JP 2002-29382 A

  Patent Document 1 discloses a starter block device that can realize a substantial antitheft effect by complicating a specific procedure and a specific operation for starting an engine. This starter block device has a configuration in which a connection limiting circuit including a power source, a block relay, an on / off switch, and a changeover switch is provided for a starter relay interposed between the starter and the cell motor.

  This connection limit circuit connects the switch part of the block relay and the switching source energization part of the changeover switch in parallel from the power source, and then the switching destination energization part of the changeover switch, the coil part of the block relay and the on / off switch Connect and ground. In addition, a coil portion of a starter relay is connected to a switching destination energization portion of the changeover switch.

  Here, the anti-theft device described in Patent Document 1 can realize a substantial anti-theft effect by complicating the specific procedure and specific operation for starting the engine, but as the applicant himself acknowledges, It cannot be a complete anti-theft measure as a device that limits engine start.

  Therefore, the present invention prevents a person other than the user from starting the engine of the automobile and activates a horn (warf) to intimidate the person other than the user and effectively prevent the car from being stolen. An object of the present invention is to provide an antitheft device for automobiles.

  An antitheft device for an automobile according to claim 1 includes a first terminal electrically connected to an ignition switch of an automobile, a second terminal electrically connected to a cell motor of the automobile, and a horn of the automobile A third terminal electrically connected to the first terminal, the first terminal, the second terminal, and the third terminal, and the first terminal and the third terminal A first state in which a circuit between the first terminal and the second terminal is opened, a circuit between the first terminal and the second terminal is closed, and a circuit between the first terminal and the second terminal is closed. A switching means switchable between a second state in which a circuit between the first terminal and the third terminal is opened, and in a normal state in which the switching means is not operated, When maintaining the first state and turning on the ignition switch In addition, power is supplied from the ignition switch to the horn via the switching means, and the horn is blown without operating the cell motor, while the switching means is operated to enter the second state. When the ignition switch is turned on, power is supplied from the ignition switch to the cell motor so that the cell motor is operated without blowing the horn.

  According to a second aspect of the present invention, there is provided the vehicle antitheft device according to the first aspect, wherein the switching means is electrically connected between the first terminal, the second terminal, and the third terminal. And a switching relay that is electrically connected between the first terminal and the switching relay, and is concealed in a predetermined location specified in advance by the driver in the interior of the automobile. The hidden switch normally maintains an off state, and when turned on, the hidden switch energizes the switching relay from the first terminal to excite the switching relay, and the switching The relay for relay has a first contact and a second contact, and the second contact of the switching relay has an input terminal, a first output terminal and a second output terminal, and the first contact Can be switched between the output terminal and the second output terminal. The second contact of the switching relay has the input terminal as the first terminal, the first output terminal as the third terminal, and the second output terminal as the second terminal, respectively. By electrically connecting, the switching relay turns off the first contact at the time of demagnetization, while electrically connecting the input terminal of the second contact to the first output terminal, The first terminal and the third terminal are electrically connected via the second contact. During excitation, the first contact is turned on and self-holding is performed by supplying power from the first terminal. By forming a circuit and maintaining the excitation state even when the hidden switch returns to the off state, while switching the second contact and electrically connecting the input terminal to the second output terminal And disconnecting the electrical connection between the first terminal and the third terminal. It is intended to establish an electrical connection between Rutotomoni the first terminal and the second terminal.

  According to a third aspect of the present invention, there is provided a vehicle antitheft device, wherein the concealed switch comprises a manual operation automatic return a contact and a holding type manual a contact connected in series.

  According to a fourth aspect of the present invention, there is provided the vehicle antitheft device, wherein the hidden switch is formed by connecting a plurality of manual operation automatic return a contacts in series.

  The automobile antitheft device according to claim 5 is the structure according to any one of claims 2 to 4, further comprising an input terminal, a first output terminal, and a second output terminal. And a change-over switch that is switchable between the second output terminals, the input terminal of the change-over switch is electrically connected to the first terminal, and the first output terminal is the first of the switching relay. The output from the first output terminal of the changeover switch is branched to the second output terminal of the second contact of the changeover relay and the hidden switch. And a second output terminal of the second contact of the switching relay and the hidden switch, respectively. The changeover switch normally connects the input terminal and the first output terminal electrically. Connected to the first end And the hidden switch are electrically connected to each other, and the first terminal and the third terminal are electrically connected via the second contact of the switching relay. A terminal is electrically connected to the second output terminal to cut off an electrical connection between the first terminal and the third terminal, and between the first terminal and the second terminal Establish electrical connection.

  According to a sixth aspect of the present invention, there is provided a vehicle antitheft device according to any one of the second to fifth aspects, further comprising a circuit board and a housing for housing the circuit board. An electronic component other than the hidden switch is configured to be housed and installed in a predetermined storage space provided in an instrument panel or a console box. The hidden switch is electrically connected to the circuit board via a lead wire, and installed in a state of being hidden at the predetermined location outside the casing.

  According to a seventh aspect of the present invention, there is provided the vehicle antitheft device according to the fifth aspect, further comprising a socket for electrically connecting the lead wire from the first terminal and the lead wire from the input terminal of the changeover switch A first connector comprising a set of plugs, a second set comprising a set of sockets and plugs for electrically connecting a lead wire from the second terminal and a lead wire from the second output terminal of the changeover switch. And a third set of sockets and plugs for electrically connecting the lead wire from the third terminal and the lead wire from the first output terminal of the second contact of the switching relay. The connector is electrically connected to a lead wire from the first output terminal of the second contact of the switching relay and a ground wire for grounding the first output terminal of the second contact of the switching relay. Socket and plug A first connector socket, a second connector socket, a third connector socket, and a fourth connector socket arranged side by side and integrated with each other. The above-described socket body is formed, and the first connector plug, the second connector plug, the third connector plug, and the fourth connector plug are juxtaposed and integrated. By configuring four plug bodies corresponding to a series of sockets, and inserting the plug bodies into the socket bodies, the first connector, the second connector, the third connector, and the fourth connector All the connectors were electrically connected together.

  According to an eighth aspect of the present invention, there is provided the vehicle antitheft device according to the seventh aspect, wherein the first connector is electrically connected to a socket or a plug on the first terminal side of the first connector. A second plug having a structure that can be electrically connected by a male-female relationship between a first plug or first socket having a free structure and the second connector of the second connector. And the first plug or the second socket in a state in which the first plug or the first socket and the second plug or the second socket are electrically connected to each other. 1 socket and the second plug or the second socket are provided in parallel and integrated, and when the automobile is manufactured and shipped, the socket or plug of the first connector and the second connector socket Alternatively, the first plug or the first socket and the second plug or the second socket of the direct connection connector are inserted into the plug, and the first terminal and the second terminal are electrically connected. And the third terminal and the fourth terminal are in a state in which the plug or socket is removed from the socket or plug of the third connector and the fourth connector, and only when the apparatus is used. Removing the first plug or first socket and the second plug or second socket of the direct connection connector from the socket or plug of the first connector and the socket or plug of the second connector; A socket or plug and a socket or plug of the second connector; a plug or socket of the first connector and a plug of the second connector; Or the socket of the third connector and the socket or plug of the fourth connector, the plug or socket of the third connector and the plug or socket of the fourth connector. And can be inserted.

  The vehicle antitheft device according to claim 9 is the structure according to any one of claims 2 to 8, and further between the second output terminal and the third terminal of the second contact of the switching relay. And a reversing relay in which a coil and a contact are connected in series. The reversing relay inputs from the first terminal through the second contact of the switching relay. The plus signal is inverted to the minus signal and output to the third terminal.

  The antitheft device for automobiles according to claim 10 is the structure according to any one of claims 2 to 8, and further between the second output terminal and the third terminal of the second contact of the switching relay. A reversing relay in which a coil and a contact are connected in series, a capacitor connected in parallel to the reversing relay coil, and a series connection between the reversing relay coil and contact. A flicker circuit having a flicker contact connected to the switching relay, and a chattering prevention circuit having a forward diode and a resistor connected in series between the second contact of the switching relay and the inversion relay. And the reversing relay inverts a positive signal input from the first terminal via the second contact of the switching relay to a negative signal and outputs the negative signal to the third terminal. , With the switching means maintained in the first state, when the ignition switch is turned on, power is supplied from the ignition switch to the horn via the switching means, and the horn is blown. The horn is blown intermittently by the flicker circuit.

  The anti-theft device for automobiles according to claim 1 prevents the start of the engine of the automobile by a person other than the user and threatens the person other than the user by operating a horn (horn). It can be effectively prevented.

  The anti-theft device for automobiles according to claim 2 can switch the power supply from the ignition switch between the horn and the cell motor with a simple circuit configuration called a hidden switch and a switching relay. Further, the hidden switch can surely prevent a person other than the authorized user from starting the engine.

  In the antitheft device for automobiles according to the third aspect, since one of the hidden switches is the holding type manual a contact, the driver can once turn on the holding type manual a contact and hold the on state. As a result, the driver maintains the state in which the manual operation type automatic return a contact is turned on by an operation with one hand (for example, the left hand), and turns on the ignition switch with the other hand (the right hand) (turns the ignition key). Operation) can be performed easily.

  Since the antitheft device for automobiles according to claim 4 uses the hidden switch as a plurality of manual operation type automatic return a contacts, the driver, for example, pressed one manual operation type automatic return a contact by hand to turn it on. While maintaining the state, it is possible to perform the operation of turning on the ignition switch with the other hand while maintaining the state in which the other manually operated automatic return a contact is pressed by the foot and kept on. As a result, a complicated operation is required due to the on operation of the hidden switch, and it is possible to more reliably prevent a person other than the authorized user from starting the engine.

  The anti-theft device for automobiles according to claim 5 can directly connect the ignition switch on the first terminal side and the cell motor on the second terminal side by switching the changeover switch in the event of failure of the device. A normal engine starting operation can be performed.

  The antitheft device for automobiles according to claim 6 can accommodate a circuit board on which electronic components other than the hidden switch are mounted in a housing, and can handle the whole in a compact manner. Moreover, since the hidden switch is installed in a state where it is concealed in a predetermined location specified by the driver in the interior of the automobile, it is possible to more reliably prevent a person other than the authorized user from starting the engine.

  The anti-theft device for automobiles according to claim 7 can easily connect the first to fourth terminals and the circuit which are electrically connected to the ignition switch or the like by the first to fourth connectors.

  The anti-theft device for an automobile according to claim 8 directly connects the ignition switch on the first terminal side and the cell motor on the second terminal side by a direct connection connector at the time of manufacture and shipment of the automobile or when the apparatus is not used. Normal engine starting operation can be performed. In addition, after shipping the car, only when you want to use this device, you can connect this device to the circuit on the car side so that the functions of this device can be demonstrated. It is possible to add it with a.

  According to a ninth aspect of the present invention, an antitheft device for an automobile inverts a positive signal input from a first terminal conducting to an ignition switch via a second contact of a switching relay to a negative signal by an inversion relay. Can be output to the third terminal connected to the horn, and the horn can be smoothly blown.

  The anti-theft device for automobiles according to claim 10 can intermittently or intermittently blow the horn by the flicker circuit, and can more effectively threaten a person other than a legitimate user.

  Hereinafter, the best mode for carrying out the present invention (hereinafter referred to as “embodiment”) will be described. Throughout each embodiment, the same members, elements, or parts are denoted by the same reference numerals, and the description thereof is omitted.

Embodiment 1
FIG. 1 is a circuit diagram showing the overall configuration of an automobile antitheft device according to Embodiment 1 of the present invention. FIG. 2 is a circuit diagram showing a connector portion of the automobile antitheft device according to Embodiment 1 of the present invention.

  The antitheft device for automobiles according to Embodiment 1 can be embodied as an antitheft device for various automobiles. First, the electrical system around the steering wheel of an automobile will be outlined. As shown in FIG. 1, a vehicle battery (voltage 12V, etc.) 1 is connected to a cell motor (engine starter) 3 via an ignition switch 2 to When the ignition switch 2 is turned on, power is supplied from the battery 1 to the cell motor via the ignition switch 2. A horn switch 5 is provided on the steering wheel 4 of the automobile. While the driver or the like presses the horn switch 5, the coil 6 of the horn relay R 3 operates to close the contact 6 a, and the horn 7 continuously blows by the power supply from the battery 1. ing.

  On the other hand, the automobile antitheft device according to the first embodiment is electrically connected between the wirings of the ignition switch 2, the cell motor 3, and the horn 7. Specifically, the automobile antitheft device includes a first terminal, a second terminal, a third terminal, and a fourth terminal. The first terminal is the uppermost one in FIG. 1, and has a first connector composed of a set of a socket 11a and a plug 11b. Further, the second terminal is the second one from the top in FIG. 1, and has a second connector 11 composed of a set of a socket 11a and a plug 11b. Further, the third terminal is the third one from the top in FIG. 1, and has a third connector 11 composed of a socket 11a and a plug 11b. Furthermore, the fourth terminal is the lowermost one in FIG. 1, and has a fourth connector composed of a socket 11a and a plug 11b. The first connector 11 (11a, 11b) of the first terminal is electrically connected to the ignition switch 2 of the automobile via a lead wire or the like. The second connector 11 (11a, 11b) of the second terminal is electrically connected to the cell motor 3 of the automobile via a lead wire or the like. Further, the third connector 11 (11a, 11b) of the third terminal is electrically connected to the horn 7 of the automobile via a lead wire or the like. Furthermore, the fourth connector 11 (11a, 11b) of the fourth terminal is electrically connected to the ground wire of the automobile through a lead wire or the like and is grounded to the vehicle body of the automobile.

  The socket 11a of the first connector 11, the socket 11a of the second connector 11, the socket 11a of the third connector 11 and the socket 11a of the fourth connector 11 are juxtaposed and integrated to form a quadruple socket body. It is configured as. Further, the plug 11b of the first connector 11, the plug 11b of the second connector 11, the plug 11b of the third connector 11 and the plug 1b of the fourth connector 11 are arranged side by side and integrated so that the four stations are connected. It is comprised as a 4-unit plug body corresponding to this socket body. Then, the first connector 11, the second connector 11, the third connector 11 and the fourth connector 11 are collectively connected electrically by inserting the plug body into the socket body. It has become.

  Here, as shown in FIG. 2, the antitheft device for automobiles according to Embodiment 1 further includes a direct connector 11A. 11 A of direct connection connectors are the 1st plug 11b of the structure which can be electrically connected by the socket 11a by the side of the 1st terminal (ignition switch 2 side) among the said 1st connectors 11, and a male and female, The second connector 11 includes a socket 11a on the second terminal side (cell motor 3 side) and a second plug 11b having a structure that can be electrically connected in a male-female relationship. Further, the direct connector 11A has a connection line 11c that electrically connects the first plug 11b and the second plug 11b. The direct connector 11A is integrally formed by arranging the first plug 11b and the second plug 11b in a state where the first plug 11b and the second plug 11b are electrically connected by the connection line 11c. It has become. That is, the direct connection connector 11A is configured as a double plug body. As a result, the antitheft device for automobiles according to the first embodiment has the socket 11a of the first connector 11 when the four plug bodies are removed from the four socket bodies when the device is not used. The first plug 11b and the second plug 11b of the direct connector 11A are inserted into the socket 11a of the second connector 11 so that the first terminal and the second terminal are electrically connected directly. It has become. At this time, the third terminal and the fourth terminal are in an open state, but there is no particular problem even if they are left as they are. That is, even in this case, the horn switch 5 is used. A normal circuit is formed between the horn relays 6, 6 a and the horn 7, and the horn 7 sounds as the horn switch 5 is pressed.

  The antitheft device for automobiles according to the first embodiment further includes a changeover switch 12 used in the event of a failure of the device, hidden switches 13 and 14 constituting a switching means, a switching relay R1 constituting a switching means, a capacitor 16 and a reversing relay R2. The switching means includes the first connector 11 (11a, 11b) of the first terminal, the second connector 11 (11a, 11b) of the second terminal, and the third connector 11 (11a of the third terminal). , 11b) are electrically connected. The switching means can be switched between a first state (intimidating state) and a second state (engine starting state). Specifically, the switching unit is configured to switch between the first connector 11 (11a, 11b) of the first terminal and the third connector 11 (11a, 11b) of the third terminal in the first state. And the circuit between the first connector 11 (11a, 11b) of the first terminal and the second connector 11 (11a, 11b) of the second terminal is opened. In the second state, the switching means switches a circuit between the first connector 11 (11a, 11b) of the first terminal and the second connector 11 (11a, 11b) of the second terminal. Close and open the circuit between the first connector 11 (11a, 11b) of the first terminal and the third connector 11 (11a, 11b) of the third terminal. In a normal state in which a suspicious person (such as automobile mud) other than the driver of the car does not know the presence of the device and does not operate the switching means, the switching means is maintained in the first state as its basic state. The Thus, when a suspicious person other than the driver turns on the ignition switch 2, power is supplied from the ignition switch 2 to the horn 7 via the switching means, and the horn 7 is blown without operating the cell motor 3. It is like that. On the other hand, when a driver of the vehicle who knows the presence of the device operates the switching means to switch from the first state to the second state, when the driver turns on the ignition switch 2, the ignition switch 2 is turned on. The cell motor 3 can be operated 3 without power feeding from 2 to the cell motor 3 and blowing the horn 7.

  Specifically, the switching means includes hidden switches 13 and 14 and a switching relay R1. The switching relay R1 is electrically connected between the first connector 11 of the first terminal, the second connector 11 of the second terminal, and the third connector 11 of the third terminal. On the other hand, the hidden switches 13 and 14 are electrically connected between the first connector 11 of the first terminal and the switching relay R1. The hidden switch connects in series a push button switch 13 as an example of a manual operation automatic return a contact and a snap switch 14 as an example of a holding type manual a contact. Further, the push button switch 13 and the snap switch 14 of the hidden switch are each a contact (also referred to as make contact or normally open contact), and each normally maintains an off state. Furthermore, the hidden switch energizes the coil 15 of the switching relay R1 by supplying power from the first terminal 11 to the switching relay R1 when both the push button switch 13 and the snap switch are turned on. ing.

  On the other hand, the switching relay R1 is a 2P type having a first contact 15a and a second contact 15b. The first contact 15a of the switching relay R1 is an a contact (normally open contact). On the other hand, the second contact 15b of the switching relay R1 is a c contact (transfer contact). Specifically, the second contact 15b has an input terminal 15b1, a first output terminal 15b2, and a second output terminal 15b3, and is switched between the first output terminal 15b2 and the second output terminal 15b3. It is supposed to be free. Further, the second contact 15b of the switching relay 15 has the input terminal 15b1 connected to the first connector 11 of the first terminal and the first output terminal 15b2 connected to the third connector 11 of the third terminal. The second output terminal 15b3 is electrically connected to the second connector of the second terminal. The switching relay R1 turns off the first contact 15a when the coil 15 is demagnetized (when not energized), while electrically connecting the input terminal 15b1 of the second contact 15b to the first output terminal 15b2. Thus, the first connector 11 of the first terminal and the third connector 11 of the third terminal are electrically connected via the second contact 15b. Further, when the coil 15 is excited, the switching relay R1 turns on the first contact 15a to form a self-holding circuit by feeding power from the first connector 11 of the first terminal, and the push button of the hidden switch Even when at least one of the switch 13 and the snap switch 14 is returned to the off state, the excited state is maintained. That is, the switching relay R1 functions as a keep relay. On the other hand, when the coil 15 is excited, the switching relay R1 switches the second contact 15b and electrically connects the input terminal 15b1 to the second output terminal 14b3, whereby the first connector of the first terminal is connected. 11 and the third connector 11 of the third terminal are cut off, and the electrical connection of the first connector 11 of the first terminal and the second connector 11 of the second terminal is established. . A capacitor 16 is connected in parallel to the coil 15 of the switching relay R1 to stabilize the operation of the switching relay R1 functioning as a keep relay.

  Furthermore, the automobile antitheft device according to the first embodiment includes a changeover switch 12 between the first connector 11 of the first terminal and the changeover relay R1. The changeover switch 12 is composed of a c contact (transfer contact), has an input terminal 12a, a first output terminal 12b, and a second output terminal 12c, and is between the first output terminal 12b and the second output terminal 12b. It can be switched with. The input terminal 12a of the changeover switch 12 is electrically connected to the first connector 11 of the first terminal. Further, the first output terminal 12b of the changeover switch 12 is electrically connected to the input terminal 15b1 of the second contact 15b of the switching relay R1. Furthermore, the output (lead wire) from the first output terminal 12b of the changeover switch 12 is branched to the second output terminal 15b3 of the second contact 15b of the changeover relay R1 and the hidden switches 13, 14. The second output terminal 15b3 of the second contact 15b of the switching relay R1 and the push button switch 13 as a hidden switch are electrically connected to each other. The change-over switch 12 is normally in the first position, electrically connects the input terminal 12a and the first output terminal 12b, and the first connector 11 and the hidden switch 13 of the first terminal. , 14 are electrically connected, and the first connector 11 of the first terminal and the third connector 11 of the third terminal are electrically connected via the second contact 15b of the switching relay R1. Connecting. On the other hand, the selector switch 12 is switched to the second position at the time of switching, and the input terminal 12a is electrically connected to the second output terminal 12c, and the first connector 11 (hidden switch) is connected to the first terminal. 13 and 14 or via the switching relay 15, the electrical connection with the third connector 11 of the third terminal is interrupted, and the first connector 11 of the first terminal and the second connector 11 The electrical connection with the second connector 11 is established.

  The vehicle antitheft device according to the first embodiment further includes a reversing relay R2 between the second contact 15b of the switching relay 15 and the third connector 11 of the third terminal. Yes. Specifically, the reversing relay R2 is obtained by connecting a coil 17 and a contact point 17a composed of a contact points in series. The reversing relay R2 inverts the positive signal input from the first connector 11 of the first terminal through the second contact 15b of the switching relay R1 to the negative signal, and the third terminal 3 is output to the third connector 11. That is, while the power supply from the ignition switch 2 to the horn 7 is a positive potential, it is necessary to input a negative potential to the horn 7, so that the potential is inverted by the inversion relay R3.

  The automobile antitheft device according to Embodiment 1 further includes a circuit board (not shown) and a housing (not shown) for housing the circuit board. The casing can be accommodated inside a predetermined accommodation space (an arbitrary space that can be selected by the driver or the like, for example, in the ashtray when the ashtray is not used) provided in an instrument panel or console box of an automobile. It has a structure (shape and size (for example, a plane of 5 cm × 5 cm)) and is housed and installed in the predetermined housing space. Electronic components other than the push button switch 13 and the snap switch 14 as the hidden switch are mounted on a circuit board in the housing. That is, the selector switch 12, the switching relay R1 (15, 15a, 15b), the capacitor 16, and the reversing relay R2 (17, 17a) are mounted on a circuit board and housed in a housing. The plug 11b of the connector 11 connected to the lead wire on the housing side of the antitheft device for automobile is exposed to the outside from the housing via the lead wire or the like and is extended into the steering column of the automobile. On the other hand, the socket 11b of the connector 11 connected to the ignition switch 2, the cell motor 3 and the lead wire on the horn 7 side of the automobile is coupled to the plug 11b of the connector 11 by insertion in the steering column of the automobile. Further, the push button switch 13 and the snap switch 14 as the hidden switches are electrically connected to the circuit board via lead wires and are installed in a state of being hidden at the predetermined location outside the casing. . For example, the push button switch 13 can be provided as a push button-like member so as to protrude from a predetermined housing space in which the housing is disposed or an audio device housing panel portion in the vicinity thereof. Further, the snap switch 14 can be provided as a member on a push button installed on the front side or the back side of the footrest installed at the driver's foot or in the vicinity thereof. In any case, the push button switch 13 and the snap switch 14 as hidden switches may be installed in a manner known only to the authorized user in a specific place known only to the authorized user, such as the driver and his relatives. preferable. That is, it is preferable that the push button switch 13 and the snap switch 14 of the hidden switch are installed in a state where they are hidden in a predetermined location specified in advance by the driver in the passenger compartment of the automobile.

Operation FIG. 3 is a circuit diagram showing the operation of the automobile antitheft device according to Embodiment 1 of the present invention during horn sounding. FIG. 4 is a circuit diagram showing the operation of the automobile antitheft device according to Embodiment 1 of the present invention when the engine is started.
As shown in FIG. 3, the automobile antitheft device according to the first embodiment includes an ignition switch for an automobile by inserting and coupling the plugs 11 b of the first to fourth connectors 11 to a socket 11 a. 2. It is electrically connected to the cell motor 3 and the horn 7 and is ready for use. At this time, the changeover switch 12 is set to the first position. The snap switch 14 is turned off. At this time, the first contact 15a of the switching relay R1 is in an OFF state, and the second contact 15b is on the first output terminal 15b2 side. In this state, a person other than a regular user such as a driver (automobile thief, etc.) is ignited to start the automobile engine without turning on both the push button switch 13 and the snap switch 14 as a hidden switch. When the switch 2 is turned on, a signal flows as shown by a one-dot chain line arrow in FIG. That is, the current from the ignition switch 2 flows to the push button switch 13 of the hidden switch through the first connector 11 of the first terminal, the input terminal 12a of the changeover switch 12 and the first output terminal 12b. As long as at least one of the push button switch 13 and the snap switch 14 is in the off state, the coil 15 of the switching relay R1 does not flow. Therefore, the coil 15 of the switching relay R1 maintains a non-excited state, and the current from the ignition switch 2 is inverted from the input terminal 15b1 of the second contact 15b of the switching relay R1 via the first output terminal 15b2. Flows in the coil 17 of the relay R2. Then, the coil 17 of the reversing relay R2 is excited and the contact 17a is turned on, and the positive potential current from the ignition switch 2 is inverted to the negative potential and supplied to the third connector 11 of the third terminal. As a result, the coil 6 of the horn relay R3 is excited, the contact 6a is turned on, and the horn 7 sounds continuously while the ignition switch 2 is turned on.

  On the other hand, from the state of FIG. 3, when a regular user such as a driver starts the engine of the automobile as shown in FIG. 4, the user can use both the push button switch 13 and the snap switch 14 as a hidden switch. And the ignition switch 2 is turned on. That is, while maintaining the state where the push button switch 13 is pressed with fingers or the like, the snap switch 14 is switched to the on state. Then, a signal flows as shown by a one-dot chain arrow in FIG. That is, the current from the ignition switch 2 is transmitted through the first connector 11 of the first terminal, the input terminal 12a of the changeover switch 12 and the first output terminal 12b, and the push button switch 13 and the snap switch 14 of the hidden switch. Flowing into. At this time, since both the push button switch 13 and the snap switch 14 are in the ON state, the current from the ignition switch 2 flows through the coil 15 of the switching relay R1. Therefore, the coil 15 of the switching relay R1 is excited, the first contact 15a is turned on, and the second contact 15b is switched from the first output terminal 15b2 side to the second output terminal 15b3 side.

  Then, as indicated by a three-dot chain arrow in FIG. 4, the current from the ignition switch 2 first flows from the first contact 15a of the switching relay R1 to the coil 15 to form a self-holding circuit. Therefore, after that, even if one or both of the push button switch 13 and the snap switch 14 are turned off, the switching relay R1 maintains the excitation state of the coil 15, and the first contact 15a maintains the on state. The second contact 15b maintains the state switched to the second output terminal 15b3 side. This state continues until the user turns off the ignition switch 2 and stops supplying current. Therefore, the current from the ignition switch 2 flows from the input terminal 15b1 of the second contact 15b of the switching relay R1 to the second connector 11 of the second terminal via the second output terminal 15b3, and the second Is supplied to the cell motor 3 from the connector. As a result, the engine can be started by driving the cell motor 3 in conjunction with the turning on of the ignition switch 2 as in the case of normal engine starting. On the other hand, no current flows through the coil 17 of the reversing relay R2, and the horn 7 does not sound when the ignition switch 2 is turned on.

  When the function of the automobile antitheft device according to the first embodiment is stopped due to a failure of the switching relay, the four plug bodies connecting the first to fourth terminals are removed from the four socket bodies. The plug 11a of the direct connection connector 11A is inserted into the socket 11b of the first and second terminals, and the ignition switch 2 and the cell motor 3 can be directly connected in a circuit. Alternatively, when the changeover switch 12 is switched from the first position to the second position, the ignition switch 2 and the cell motor 3 can be directly connected in a circuit via the changeover switch 12. Therefore, when the automobile antitheft device according to the first embodiment fails or when it is not desired to use the automobile antitheft device according to the first embodiment, the changeover switch 12 is moved from the first position to the second position. It can be easily dealt with simply by switching to the position. Thereafter, when the use of the vehicle antitheft device according to the first embodiment is resumed, it can be easily dealt with by simply switching the changeover switch 12 from the second position to the first position. Furthermore, since the change-over switch 12 is housed in the housing, its operation is very simple.

Embodiment 2
FIG. 5 is a circuit diagram showing the overall configuration of an automobile antitheft device according to Embodiment 2 of the present invention.
As shown in FIG. 5, the anti-theft device for automobiles according to the second embodiment is electrically connected between the wirings of the ignition switch 2, the cell motor 3 and the horn 7, as in the anti-theft device for automobiles according to the first embodiment. Connected to. On the other hand, in the car antitheft device according to the second embodiment, the ignition switch 2 is directly connected to the input terminal 12 a of the changeover switch 12 without using the connector 11. Similarly, the cell motor 3 is also directly connected to the second output terminal 12b of the changeover switch 12 and the second output terminal 15b3 of the second contact 15b of the changeover relay R1 without going through the connector 11. Yes. Further, similarly, the horn relay 6 and the horn 7 are also directly connected to the contact 17a of the reversing relay R2 without going through the connector 11. The connection relationship of the ignition switch 2, the cell motor 3, and the horn 7 to the vehicle antitheft device is the same as that of the first embodiment except that the connector 11 is omitted. On the other hand, the circuits of the horn relay 6 and the horn 7 are not arranged on the same side as the circuits of the ignition switch 2 and the cell motor 3 as in the first embodiment, but are arranged on the opposite side.

  Unlike the antitheft device for automobiles according to the first embodiment, the antitheft device for automobiles according to the second embodiment has a plurality of (two in FIG. 5) manual operation automatic return a contacts as push buttons as hidden switches. A switch 13 is used. That is, in the second embodiment, the two push button switches 13 are connected in series between the first output terminal 12b of the changeover switch 12 and the changeover relay R1. Furthermore, in the antitheft device for automobiles according to the second embodiment, a common ground is used for the switching relay R1 and the reversing relay R2.

Operation The car antitheft device according to the second embodiment is used with the changeover switch 12 set to the first position, as in the first embodiment. Further, both of the two push button switches 13 as the hidden switches are turned off. Further, at this time, the first contact 15a of the switching relay R1 is in an OFF state, and the second contact 15b is on the first output terminal 15b2 side. In this state, a person other than a regular user such as a driver (automobile thief, etc.) tries to start the automobile engine without turning on both of the two push button switches 13 as a hidden switch. When the switch 2 is turned on, the current from the ignition switch 2 flows to the two push button switches 13 of the hidden switch via the input terminal 12a and the first output terminal 12b of the changeover switch 12, but the two push buttons As long as at least one of the switches 13 is in an OFF state, the current does not flow through the coil 15 of the switching relay R1. Therefore, the coil 15 of the switching relay R1 maintains a non-excited state, and the current from the ignition switch 2 is inverted from the input terminal 15b1 of the second contact 15b of the switching relay R1 via the first output terminal 15b2. Flows in the coil 17 of the relay R2. Then, the coil 17 of the reversing relay R2 is excited and the contact point 17a is turned on, and the positive potential current from the ignition switch 2 is reversed to the negative potential and supplied to the horn relay 6 and the nominal horn 7. As a result, the horn 7 sounds continuously while the ignition switch 2 is on.

  On the other hand, when a legitimate user such as a driver starts the engine of the automobile, the user maintains both of the two push button switches 13 as the hidden switches and turns on the ignition switch 2. To do. Then, the current from the ignition switch 2 flows to the two push button switches 13 of the hidden switch via the input terminal 12a and the first output terminal 12b of the changeover switch 12. At this time, since both of the two push button switches 13 are in the ON state, the current from the ignition switch 2 flows through the coil 15 of the switching relay R1. Therefore, the coil 15 of the switching relay R1 is excited, the first contact 15a is turned on, and the second contact 15b is switched from the first output terminal 15b2 side to the second output terminal 15b3 side.

  Then, the current from the ignition switch 2 first flows from the first contact 15a of the switching relay R1 to the coil 15 to form a self-holding circuit. Therefore, even if one or both of the two push button switches 13 are turned off thereafter, the switching relay R1 maintains the excitation state of the coil 15, the first contact 15a maintains the on state, The second contact 15b maintains the state switched to the second output terminal 15b3 side. This state continues until the user turns off the ignition switch 2 and stops supplying current. Therefore, the current from the ignition switch 2 is supplied to the cell motor 3 from the input terminal 15b1 of the second contact 15b of the switching relay R1 via the second output terminal 15b3. As a result, the engine can be started by driving the cell motor 3 in conjunction with the turning on of the ignition switch 2 as in the case of normal engine starting. On the other hand, no current flows through the coil 17 of the reversing relay R2, and the horn 7 does not sound when the ignition switch 2 is turned on.

Embodiment 3
FIG. 6 is a circuit diagram showing the overall configuration of an automobile antitheft device according to Embodiment 3 of the present invention.
As shown in FIG. 6, the vehicle antitheft device according to Embodiment 3 has the same configuration as that of the vehicle antitheft device according to Embodiment 1, except that the second contact 15b of the switching relay R1 The circuit configuration with the horn relay 6 is different from that of the automobile antitheft device according to the first embodiment. That is, the vehicle antitheft device according to the third embodiment employs a so-called flicker circuit so that power is supplied to the horn 7 intermittently. Specifically, the antitheft device for automobiles according to Embodiment 3 includes a diode 31 and a resistor 32 as a chattering prevention circuit, a capacitor 33 constituting a flicker circuit, a coil 34, and a first contact 34a (a contact). ) And a second contact 34b of the reversing relay constituting a flicker circuit. Specifically, the reversing relay R2 is interposed between the second output terminal 15b3 of the second contact 15b of the switching relay R1 and the third connector 11 of the third terminal. Further, the coil 34 of the reversing relay R2 and the first contact 34a are connected in series.

  On the other hand, the flicker circuit includes the capacitor 33 connected in parallel to the coil 34 of the reversing relay R2, and the flicker contact connected in series between the coil 34 of the reversing relay R2 and the first contact 34a. And the second contact 34b. The chattering prevention circuit connects a diode 31 in the forward direction between the first output terminal 15b2 of the second contact 15b of the switching relay R1 and the coil 34 of the reversing relay R2, and the diode 31 and a resistor 32 are connected in series. Then, in the antitheft device for automobiles according to the third embodiment, the first output terminal 15b2 of the second contact 15b of the switching relay R1 is changed from the first connector 11 of the first terminal by the reversing relay R2. The plus signal input via the signal is inverted to a minus signal and output to the third connector 11 of the third terminal. Furthermore, in the automobile antitheft device according to the third embodiment, the ignition switch 2 is turned on with the switching means maintained in the first state, and the ignition switch 2 is switched to the horn 7 via the switching means. When power is supplied and the horn 7 is blown, the horn 7 is blown intermittently (intermittently) by a flicker circuit.

  Specifically, the current continuously supplied from the first output terminal 15b2 of the second contact 15b of the switching relay R1 flows through the coil 34 and also flows through the capacitor 33 and is stored in the capacitor 33. The Then, the coil 34 of the reversing relay R2 is excited, and first, both the first contact 34a and the second contact 34b are turned on, and power is supplied from the reversing relay R2 to the horn 7, so that the horn 7 is Blow. On the other hand, almost simultaneously with this, the second contact 34b intermittently repeats the on / off operation by the charge / discharge operation of the capacitor 33. Therefore, the power supply from the inversion relay R2 to the horn 7 is intermittently performed in conjunction with the on / off operation of the second contact 34b by the charging / discharging operation of the capacitor 33, whereby the horn 7 sounds intermittently. . As a result, the antitheft device for automobiles according to the third embodiment increases the threatening effect on a person other than a regular user such as a driver (automobile thief, etc.) by intermittently blowing the horn 7. Can do.

  By the way, when the present invention is embodied in an anti-theft device for automobiles, the hidden switch can be constituted by a switch of a type that automatically returns from an on state to an off state, such as a push button switch 13. While the ignition switch 2 is turned on, it is necessary to simultaneously press all the hidden switches with fingers or the like to maintain the pressed state. Therefore, when one of the hidden switches is the push button switch 13, the other hidden switch is preferably a switch of the type that maintains the ON state even when the finger is released, such as the snap switch 14.

  Further, the connection between the circuit on the automobile side such as the ignition switch 2 and the circuit of the antitheft device for automobiles of the present invention can be achieved by using a connector as in the first embodiment. Although it is preferable to take the trouble of directly connecting the ignition switch 2 and the cell motor 3 such as the necessity of stopping the function of the antitheft device, etc., as in the second embodiment, the circuit on the vehicle side such as the ignition switch 2 and the like It is also possible to connect the circuit of the automobile antitheft device of the invention without using a connector.

  Furthermore, the circuit configuration of the antitheft device for automobiles according to the present invention, as in the first embodiment, may be offensive so that the circuit on the horn 7 side and the circuit on the ignition switch 2 side of the automobile can be arranged on the same side. Although it is preferable from the point of simplification of the circuit configuration and the like, it is also possible to adopt a configuration in which the circuit on the horn 7 side and the circuit on the ignition switch 2 side of the automobile are arranged on the opposite side as in the second embodiment.

FIG. 1 is a circuit diagram showing the overall configuration of an automobile antitheft device according to Embodiment 1 of the present invention. FIG. 2 is a circuit diagram showing a connector portion of the automobile antitheft device according to Embodiment 1 of the present invention. FIG. 3 is a circuit diagram showing the operation of the car antitheft device according to Embodiment 1 of the present invention during horn sounding. FIG. 4 is a circuit diagram showing the operation of the automobile antitheft device according to Embodiment 1 of the present invention when the engine is started. FIG. 5 is a circuit diagram showing the overall configuration of an automobile antitheft device according to Embodiment 2 of the present invention. FIG. 6 is a circuit diagram showing the overall configuration of an automobile antitheft device according to Embodiment 3 of the present invention.

Explanation of symbols

2: ignition switch, 3: cell motor, 7: horn 11: first to fourth connectors: 11a: socket, 11b: plug 11A: direct connection connector 12: changeover switch, 12a: input terminal 12b: first output terminal, 12c: Second output terminal 13: Push button switch (manual operation automatic return a contact as a hidden switch)
14: Snap switch (Holding type manual a contact as a hidden switch)
R1: switching relay, 15a: first contact, 15b: second contact 15b1: input terminal, 15b2: first output terminal, 15b3: second output terminal R2: inversion relay, 17: coil, 17a : Contact a 31: diode, 32: resistor, 33: capacitor 34: coil, 34a: first contact (a contact), 34b: second contact (flicker contact)

Claims (10)

A first terminal electrically connected to the ignition switch of the automobile;
A second terminal electrically connected to the automobile cell motor;
A third terminal electrically connected to the automobile horn;
Electrically connecting the first terminal, the second terminal, and the third terminal, and closing a circuit between the first terminal and the third terminal; and A first state of opening a circuit between the second terminal, a circuit between the first terminal and the second terminal, and closing the circuit between the first terminal and the third terminal; Switching means switchable between a second state of opening a circuit between
In a normal state in which the switching means is not operated, the switching means is maintained in the first state, and when the ignition switch is turned on, power is supplied from the ignition switch to the horn via the switching means. The horn is blown without operating the cell motor, while the switching means is operated to switch to the second state, so that when the ignition switch is turned on, the ignition switch An antitheft device for an automobile, wherein power is supplied to the cell motor to operate the cell motor without blowing the horn. The switching means includes a switching relay electrically connected between the first terminal, the second terminal and the third terminal, and between the first terminal and the switching relay. And a hidden switch that is installed in a state where it is concealed in a predetermined location specified by the driver in the interior of the automobile,
The hidden switch normally maintains an off state, and when turned on, feeds power from the first terminal to the switching relay to excite the switching relay,
The switching relay has a first contact and a second contact,
The second contact of the switching relay has an input terminal, a first output terminal, and a second output terminal, and is switchable between the first output terminal and the second output terminal,
The second contact of the switching relay has the input terminal as the first terminal, the first output terminal as the third terminal, and the second output terminal as the second terminal, respectively. Electrically connect,
The switching relay turns off the first contact at the time of demagnetization, while electrically connecting the input terminal of the second contact to the first output terminal, thereby making the second contact The first terminal and the third terminal are electrically connected to each other, and at the time of excitation, the first contact is turned on to form a self-holding circuit by power feeding from the first terminal, The first terminal is maintained by switching the second contact and electrically connecting the input terminal to the second output terminal while maintaining the excited state when the hidden switch returns to the off state. The vehicle theft according to claim 1, wherein the electrical connection between the first terminal and the third terminal is cut off and the electrical connection between the first terminal and the second terminal is established. Prevention device.   3. The antitheft device for an automobile according to claim 2, wherein the hidden switch comprises a manual operation automatic return a contact and a holding type manual a contact connected in series.   The automobile antitheft device according to claim 2, wherein the hidden switch is formed by connecting a plurality of manual operation automatic return a contacts in series. And a changeover switch that has an input terminal, a first output terminal, and a second output terminal, and is switchable between the first output terminal and the second output terminal.
An input terminal of the changeover switch is electrically connected to the first terminal, and the first output terminal is electrically connected to an input terminal of a second contact of the switching relay,
The output from the first output terminal of the changeover switch is branched to the second output terminal of the second contact of the changeover relay and the hidden switch, and the second of the second contact of the changeover relay. Are electrically connected to the output terminal and the hidden switch, respectively.
The change-over switch normally connects the input terminal and the first output terminal electrically, electrically connects the first terminal and the hidden switch, and The first terminal and the third terminal are electrically connected via a second contact, and at the time of switching, the input terminal is electrically connected to the second output terminal, and the first terminal The electrical connection between the first terminal and the third terminal is interrupted, and the electrical connection between the first terminal and the second terminal is established. An antitheft device for an automobile according to claim 1. Furthermore, a circuit board and a housing for housing the circuit board are provided,
The housing is structured so as to be housed inside a predetermined housing space provided in an instrument panel or console box of an automobile, and is housed and installed inside the predetermined housing space,
Electronic components other than the hidden switch are mounted on the circuit board in the housing,
6. The hidden switch according to claim 2, wherein the hidden switch is electrically connected to the circuit board via a lead wire and is hidden in the predetermined location outside the casing. An antitheft device for an automobile according to claim 1. A first connector comprising a set of a socket and a plug for electrically connecting a lead wire from the first terminal and a lead wire from the input terminal of the changeover switch;
A second connector comprising a socket and plug pair for electrically connecting a lead wire from the second terminal and a lead wire from the second output terminal of the changeover switch;
A third connector comprising a set of a socket and a plug for electrically connecting the lead wire from the third terminal and the lead wire from the first output terminal of the second contact of the switching relay;
A socket and a plug for electrically connecting a lead wire from the first output terminal of the second contact of the switching relay and a ground wire for grounding the first output terminal of the second contact of the switching relay And a fourth connector consisting of
The socket of the first connector, the socket of the second connector, the socket of the third connector and the socket of the fourth connector are juxtaposed and integrated to form a quadruple socket body, and the first 4 plug bodies corresponding to the 4 sockets, in which a plug of one connector, a plug of the second connector, a plug of the third connector and a plug of the fourth connector are juxtaposed and integrated. The first connector, the second connector, the third connector, and the fourth connector are collectively connected electrically by inserting the plug body into the socket body. 6. The antitheft device for automobile according to claim 5, wherein the antitheft device for automobile is used. Furthermore, among the first connectors, the first plug or first socket having a structure that can be electrically connected in a male-female relationship with the socket or plug on the first terminal side, and the second connector. The connector includes a second plug or second socket having a structure that can be electrically connected in a male-female relationship with the socket or plug on the second terminal side, and the first plug or second The first plug or the first socket and the second plug or the second socket are arranged side by side in a state where the first socket and the second plug or the second socket are electrically connected. Integrated direct connector,
When the automobile is manufactured and shipped, the first connector socket or plug of the first connector and the socket or plug of the second connector are connected to the first plug or first socket and second plug or second of the direct connection connector. A socket is inserted, and the first terminal and the second terminal are electrically connected directly, and the third terminal and the fourth terminal are connected to the third connector and the fourth terminal, respectively. The plug or socket is removed from the socket or plug of the connector, and only when the apparatus is used, the first plug or the first plug or the first connector of the directly connected connector from the socket or plug of the first connector and the socket or plug of the second connector is used. 1 socket and the second plug or the second socket are removed, the socket or plug of the first connector and the second connector The plug or socket of the first connector and the plug or socket of the second connector are inserted into the socket or plug, and the socket or plug of the third connector and the socket or plug of the fourth connector are inserted into the socket or plug. 8. The antitheft device for an automobile according to claim 7, wherein the plug or socket of the third connector and the plug or socket of the fourth connector can be inserted. And a reversing relay that is interposed between the second output terminal of the second contact of the switching relay and the third terminal, and in which a coil and a contact are connected in series,
The inversion relay inverts a plus signal input from the first terminal via the second contact of the switching relay to a minus signal and outputs the inverted signal to the third terminal. The antitheft device for automobiles according to any one of claims 2 to 8. Further, the reversing relay is interposed between the second output terminal of the second contact of the switching relay and the third terminal, and the coil and the a contact are connected in series.
A flicker circuit having a capacitor connected in parallel to the coil of the reversing relay, and a flicker contact connected in series between the coil and the contact of the reversing relay;
A chattering prevention circuit having a forward diode and a resistor connected in series between the second contact of the switching relay and the inversion relay;
The inversion relay inverts the positive signal input from the first terminal via the second contact of the switching relay to the negative signal and outputs the negative signal to the third terminal.
With the switching means maintained in the first state, when the ignition switch is turned on, power is supplied from the ignition switch to the horn via the switching means, and the horn is blown. 9. The vehicle antitheft device according to claim 2, wherein the horn is intermittently blown by the flicker circuit.

Images