JP4354847B2 - Key interlock circuit of slot type key device - Google Patents

Description

  The present invention relates to a key interlock circuit of a slot type key device.

  2. Description of the Related Art Conventionally, it is known that a mechanical key is inserted and rotated in a key cylinder provided on an instrument panel to start an engine or the like (see, for example, Patent Document 1). In such a device, the mechanical key inserted in the key cylinder can be switched to the LOCK position, the ACC position, the ON position, and the ST position, and the mechanical key can be inserted into and removed from the key cylinder only at the LOCK position. It is said that.

  In addition, in order to improve the safety of the automobile, such a device is provided with a key interlock that prevents the mechanical key from being removed from the key cylinder during traveling. During running, the key interlock prevents the mechanical key from rotating from the ACC position to the LOCK position.

  In recent years, in order to prevent theft of automobiles, an engine that starts an engine by mutual communication between a key and a vehicle device has been proposed (see, for example, Patent Document 2). This device performs verification by performing mutual communication of an identification code (imobi code) between a transponder provided in an electronic key and a vehicle device. When mutual communication (verification) is performed, an electronic key is inserted into a key insertion opening of a knob provided on the instrument panel and made rotatable. The electronic key (knob) is configured to be rotatable from the LOCK position to another position (ACC position, ON position, ST position) only when the identification codes match by mutual communication.

  This device can also be inserted into and removed from the key insertion slot of the knob only when the electronic key is in the LOCK position. This device is also provided with a key interlock so that the electronic key (knob) cannot be rotated from the ACC position to the LOCK position by the key interlock during traveling.

Recently, commercialization of a slot type key device has been desired. The slot-type key device is, for example, for starting an engine by performing mutual communication between a key and vehicle equipment only by inserting an electronic key into a slot mechanism provided in an instrument panel.
JP 2001-253318 A JP 2001-303808 A

By the way, when the key interlock is to be realized in the slot type key device, there are the following problems.
The stopper of the mechanical key (electronic key) was Tsu Figure with the rotation of the key cylinder (knob) is in the apparatus of Patent Documents 1 and 2. On the other hand, the slot type key device has a problem in that the electronic key is simply inserted into the slot mechanism, so that the electronic key must be inadvertently removed from the slot mechanism.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a key interlock circuit of a slot type key device capable of interlocking a key inserted into a key insertion member.

In order to achieve the above object, the invention according to claim 1 is directed to detecting means for detecting whether or not a key is inserted in a key insertion member of the slot type key device, and ignition from the power source to the power supply means. Power control means for controlling whether or not at least one of power and accessory power is supplied; and the detection means detects that the key is inserted in the key insertion member, and the power control means The key inserted into the key insertion member is made unremovable on the condition that it is controlled to supply at least one of ignition power and accessory power from the power source to the power supply means by the power source. The gist of the present invention is that it is provided with a non-detachable means.

  According to a second aspect of the present invention, in the key interlock circuit of the slot type key device according to the first aspect, the shift lever that can be switched to any one of a plurality of positions including the parking position is the parking position. Position determining means for determining whether or not the position is determined, wherein the disengageable means is determined by the position determining means that the shift lever is not positioned at the parking position, and is detected by the detecting means within the key insertion member. The gist is to make the key inserted into the key insertion member unremovable when it is detected that the key is inserted.

(Function)
In the first aspect of the invention, the following effects are obtained. In order to make the key inserted into the key insertion member impossible to be removed, both of the following two conditions are satisfied. The first condition is that a key is inserted into the key insertion member, and the detection means detects that the key is inserted into the key insertion member. The second condition is such that the power control means supplies at least one of ignition power and accessory power from the power source to the power supply means. If both of the above two conditions are satisfied, the key inserted into the key insertion member cannot be removed by the non-detachable means.

  On the other hand, in a state where at least one of the ignition power and the accessory power is supplied from the power source to the power supply means, and the key inserted in the key insertion member by the non-detachable means is made non-detachable, When the key is taken out from the key insertion member, the following is performed. Control is performed so that ignition power and accessory power are not supplied from the power source to the power supply means by the power control means. Then, the non-detachable means does not disable the key inserted in the key insertion member, and the key can be taken out from the key insertion member.

  In the invention according to claim 2, in addition to the action of the invention according to claim 1, the following action is obtained. In order to make the key inserted into the key insertion member unremovable, both the two conditions described in the operation of the invention of claim 1 are satisfied, or both of the following two conditions are satisfied: To. The first condition is that a key is inserted into the key insertion member, and the detection means detects that the key is inserted into the key insertion member. The second condition is that the shift lever is positioned at a position other than the parking position. If both of the above two conditions are satisfied, the key inserted into the key insertion member cannot be removed by the non-detachable means.

  On the other hand, at least one of ignition power and accessory power is supplied from the power source to the power supply means, and the shift lever is located at a position other than the parking position among a plurality of positions. When the key inserted in the key insertion member is taken out in the state where the key inserted in the key is not removable, the following operation is performed. The first condition is to switch the shift lever to the parking position. The second condition is that the power control means controls the ignition power and accessory power not to be supplied from the power source to the power receiving means. When both of the above two conditions are satisfied, the non-detachable means does not disable the key inserted in the key insertion member, and the key can be taken out from the key insertion member.

  According to the present invention, a key inserted into a key insertion member can be interlocked.

  Hereinafter, an embodiment in which the key interlock circuit of the slot type key device of the present invention is embodied as a key interlock circuit of a key interlock system in an automatic transmission vehicle will be described with reference to FIGS.

As shown in FIG. 1, the key interlock system 11 includes a vehicle control device 12 and an electronic key 13 as a key.
As shown in FIG. 2, the electronic key 13 has a card shape and is carried by the owner (driver). The vehicle control device 12 is provided on the instrument panel 15 of the vehicle and detects whether or not the electronic key 13 is a regular key by performing mutual communication with the electronic key 13. When the electronic key 13 is a regular key, Is a device for starting the engine and the like.

  As shown in FIG. 3, the vehicle control device 12 includes a slot mechanism 14 as a key insertion member of a slot type key device, a solenoid 16 as a non-detachable means, a key insertion detection switch 21 as a detection means, and a key detection sensor 22. It has.

As shown in FIG. 2, the slot mechanism 14 has a bottomed rectangular tube shape, and the electronic key 13 can be inserted into and removed from the key arrangement space K opened on one side surface.
As shown in FIG. 3, the slot mechanism 14 includes four side wall portions 14a, 14b, 14c, 14d and a bottom portion 14e. In the slot mechanism 14, the key arrangement space K opened to the one side surface 14f is formed by the four side wall portions 14a to 14d and the bottom portion 14e. As shown in FIG. 2, the slot mechanism 14 is disposed so that one side surface 14 f is exposed to the instrument panel 15 in the vehicle interior.

  As shown in FIG. 3, a solenoid 16 is fixed to the side wall portion 14b on the surface opposite to the key arrangement space K. A plunger insertion hole 17 is formed in the side wall portion 14 b, and the plunger 16 a of the solenoid 16 is configured to advance and retreat into the key arrangement space K through the plunger insertion hole 17.

  The bottom 14e is provided with a key insertion detection switch 21 and a key detection sensor 22 which are mechanical contact type switches on the surface on the key arrangement space K side. The key insertion detection switch 21 and the key detection sensor 22 include main body portions 21a and 22a and movable portions 21b and 22b, respectively. The main body portions 21a and 22a are embedded in the bottom portion 14e, and the movable portions 21b and 22b are disposed in the key arrangement space K. A communication antenna 35a, which will be described later, is arranged on the side opposite to the key arrangement space K with respect to the side wall part 14d.

  Most of the electronic key 13 can be inserted into the key arrangement space K. An engagement recess 23 is formed on one side surface 13 a of the electronic key 13. The engaging recess 23 is formed at a position facing the plunger 16 a of the solenoid 16 when the electronic key 13 is brought into contact with the bottom 14 e of the slot mechanism 14. The engaging recess 23 is configured to engage with the plunger 16a when the plunger 16a of the solenoid 16 advances.

  For example, a transponder control unit 24 is embedded in the electronic key 13. The transponder control unit 24 generates an electromotive force when receiving a predetermined transponder driving radio wave, and outputs a response signal including a predetermined transponder code using the electromotive force.

  When the electronic key 13 is inserted into the key arrangement space K of the slot mechanism 14 and the movable part 22b of the key detection sensor 22 is pressed, the transponder control unit 24 of the electronic key 13 and the vehicle control device 12 communicate with each other. Is to be done. When the vehicle control device 12 determines that the electronic key 13 is a regular key and the movable portion 21b of the key insertion detection switch 21 is pressed, the plunger 16a of the solenoid 16 is advanced to engage the electronic key 13. It engages with the recess 23. As a result, the electronic key 13 cannot be detached from the slot mechanism 14.

Next, the electrical configuration of the vehicle control device 12 will be described.
As shown in FIG. 1, the vehicle control device 12 includes an ignition switch 25, a collation control unit 32, a power control ECU 33, an engine control unit 34, a transponder communication unit 35, a depression detection sensor 36, and a shift lock mechanism 37. . The collation control unit 32, the power supply control ECU 33, and the engine control unit 34 include a CPU, ROM, and RAM (not shown).

  The power control ECU 33 is connected to the key detection sensor 22, the ignition switch 25, the collation control unit 32, the engine control unit 34, the depression detection sensor 36, and the shift lock mechanism 37. A transponder communication unit 35 and an engine control unit 34 are connected to the verification control unit 32. The transponder communication unit 35 includes the communication antenna 35a.

  As shown in FIG. 2, the ignition switch 25 includes a pressing portion 25 a and is arranged so that the pressing portion 25 a is exposed from the instrument panel 15. In this embodiment, the ignition switch 25 is a momentary push button switch. As shown in FIG. 3, when the electronic key 13 is inserted into the key arrangement space K of the slot mechanism 14 and the electronic key 13 comes into contact with the bottom portion 14e, the movable portion 22b of the key detection sensor 22 is pressed. Then, the key detection sensor 22 outputs a detection signal to the power supply control ECU 33.

  As shown in FIG. 1, when the detection signal is input from the key detection sensor 22, the power supply control ECU 33 outputs a transponder drive signal to the verification control unit 32. When the transponder drive signal is input, the verification control unit 32 outputs the drive signal to the transponder communication unit 35. When the drive signal is input, the transponder communication unit 35 outputs a transponder drive radio wave having a predetermined frequency (for example, 134 kHz) from the communication antenna 35a. The transponder driving radio wave is output to the key arrangement space K of the slot mechanism 14.

  The transponder control unit 24 inserted into the key arrangement space K of the slot mechanism 14 receives the transponder driving radio wave transmitted from the communication antenna 35a, and outputs a response signal in response to the transponder driving radio wave. The transponder communication unit 35 receives the response signal via the communication antenna 35 a and outputs a received signal obtained by demodulating the signal to the verification control unit 32.

  The collation control unit 32 collates a transponder code included in the received signal with a transponder code preset in itself (verification of whether or not it is a regular key). When the transponder codes match, the collation control unit 32 outputs a start permission signal (collation completion signal) to the power supply control ECU 33 and the engine control unit 34. On the other hand, the collation control unit 32 outputs a start prohibition signal to the power supply control ECU 33 and the engine control unit 34 when the transponder codes do not match.

  When the engine drive signal indicating that the engine is being driven is input from the power supply control ECU 33, the verification control unit 32 stops outputting the drive signal to the transponder communication unit 35.

  The power control ECU 33 is connected to an ACC relay (accessory relay) 41, an IG relay (ignition relay) 42, and an ST relay (starter relay) 43. A battery (power supply) terminal and an ACC device 44 are connected to the ACC relay 41. A battery terminal and an IG device 45 are connected to the IG relay 42. A battery terminal and a starter 46 are connected to the ST relay 43. Examples of the ACC device 44 include a car stereo and a cigar lighter. Examples of the IG device 45 include an engine control unit 34, a meter, and a window regulator ECU. Each of the relays 41 to 43 is configured to turn on the contact when an operation signal (for example, an H level operation signal) is output from the power supply control ECU 33.

  The power supply control ECU 33 enters an engine start permission state when a start permission signal is input from the verification control unit 32. In this engine start permission state, when the pressing portion 25a of the ignition switch 25 is pressed and a pressing operation signal (for example, an H level signal) is input, the power control ECU 33 causes the IG relay 42 and the ST relay 43 to operate. An operation signal is output to

  For this reason, the contacts of the IG relay 42 and the ST relay 43 are turned ON, and electric power is supplied from the battery to the IG device 45 (engine control unit 34) and the starter 46. As a result, the starter 46 operates. In addition, the power control ECU 33 outputs a start signal to the engine control unit 34 in response to the pressing operation signal input from the ignition switch 25.

The engine control unit 34 start permit signal from the verification control unit 32 is input, the start signal from the power control ECU33 is are entered, the fuel injection control and ignition control and the like performed. The engine control unit 34 detects the driving state of the engine based on an ignition pulse, an alternator output, and the like, and outputs a complete explosion signal to the power supply control ECU 33 when it is determined that the engine is driven.

Note that while the engine is being driven, the engine control unit 34 continues to output a complete explosion signal to the power supply control ECU 33.
When the complete explosion signal is input from the engine control unit 34, the power supply control ECU 33 stops the output of the operation signal to the ST relay 43 to make the ST relay 43 inactive and the operation signal to the ACC relay 41. Is output. For this reason, the contact of the ACC relay 41 is turned ON, and power is supplied from the battery to the ACC device 44.

  The power supply control ECU 33 outputs an engine stop signal to the engine control unit 34 when a pressing operation signal is input from the ignition switch 25 while the engine is being driven, that is, when a complete explosion signal is input. At the same time, the power supply control ECU 33 stops the output of the operation signal to the ACC relay 41 and the IG relay 42 and puts the ACC relay 41 and the IG relay 42 into an inoperative state. The engine control unit 34 stops the engine when an engine stop signal is input.

  The depression detection sensor 36 outputs a depression signal to the power supply control ECU 33 when the brake pedal is depressed. The power supply control ECU 33 outputs a movement permission signal to the shift lock mechanism 37 when a complete explosion signal is input from the engine control unit 34 and a stepping signal is input from the stepping detection sensor 36, and otherwise A movement prohibition signal is output to the shift lock mechanism 37.

  As shown in FIG. 4, when the shift prohibiting signal is input, the shift lock mechanism 37 moves the shift lever S located at the parking position to another position (for example, reverse position, neutral position, drive position, second position, low position). It is configured so that it cannot be switched. Further, the shift lock mechanism 37 is configured such that the shift lever S can be switched to any position when a movement permission signal is input.

Next, characteristic parts in the electrical configuration of the key interlock system 11 will be described.
The vehicle control device 12 includes the solenoid 16, the key insertion detection switch 21, diodes 51 and 52, and a P position detection switch 53 as position determination means. In this embodiment, the P position detection switch 53 employs a mechanical contact type switch. The anode of the diode 51 is connected between the ACC relay 41 and the ACC device 44. One end of the key insertion detection switch 21 is connected to the cathode of the diode 51. One end of the solenoid 16 is connected to the other end of the key insertion detection switch 21, and the other end of the solenoid 16 is grounded. The solenoid 16 moves the plunger 16a into the key arrangement space K when electric power is supplied, and retracts the plunger 16a from the key arrangement space K when electric power is not supplied.

  When the electronic key 13 is inserted into the key arrangement space K of the slot mechanism 14 and the electronic key 13 comes into contact with the bottom part 14e of the slot mechanism 14, the movable part 21b of the key insertion detection switch 21 is pressed. Then, the key insertion detection switch 21 is turned on.

  Further, the anode of the diode 52 is connected between the IG relay 42 and the IG device 45. One end of the key insertion detection switch 21 is connected to the cathode of the diode 52. Furthermore, one end of a P position detection switch 53 is connected between the key insertion detection switch 21 and the diodes 51 and 52, and the other end of the P position detection switch 53 is connected to a battery terminal.

  The P position detection switch 53 has its contact point OFF only when the shift lever S that can be switched to any one of a plurality of positions including the parking position is in the parking position, and the contact point when the shift lever S is in any other position. Is configured to be ON. Examples of the plurality of positions include a parking position, a reverse position, a neutral position, a drive position, a second position, a low position, and the like. When the contact of the P position detection switch 53 is ON and the contact of the key insertion detection switch 21 is ON, power is supplied from the battery to the solenoid 16 via the P position detection switch 53 and the key insertion detection switch 21. (Hereinafter, this power is referred to as battery power e1).

  In the present embodiment, the power supply control ECU 33, the ACC relay 41, and the IG relay 42 constitute a power supply control device 55 as power control means. The power supply control device 55, the solenoid 16, the key insertion detection switch 21, and the P position detection switch 53 constitute a key interlock circuit 56.

Next, the operation of the key interlock circuit 56 of this embodiment will be described.
First, the key interlock of the electronic key 13 will be described. It is assumed that the shift lever S is positioned at the parking position as a premise.

  When the electronic key 13 is inserted into the key arrangement space K of the slot mechanism 14 and the electronic key 13 contacts the bottom portion 14e, a detection signal is output from the key detection sensor 22 to the power supply control ECU 33.

  Then, the process of collating the transponder codes is performed between the power control ECU 33, the collation control unit 32, the transponder communication unit 35, and the electronic key 13. When the transponder codes match, the collation control unit 32 controls the power control. A start permission signal is output to the ECU 33 and the engine control unit 34.

  When a pressing operation is performed on the pressing portion 25a of the ignition switch 25 in a state where the start permission signal is input to the power control ECU 33, a pressing operation signal is input from the ignition switch 25 to the power control ECU 33. The contact of the ST relay 43 is turned ON. Then, electric power is supplied from the battery to the IG device 45 and the engine is driven. At this time, since the electronic key 13 inserted in the slot mechanism 14 is in contact with the bottom portion 14e, the contact of the key insertion detection switch 21 is ON and the IG relay 42 and the diode 52 are connected. Then, electric power is supplied from the battery to the solenoid 16. Then, the plunger 16a of the solenoid 16 advances into the key arrangement space K and engages with the engagement recess 23 of the electronic key 13, so that the electronic key 13 cannot be detached from the slot mechanism 14.

  Then, after the engine is driven, the power supply control ECU 33 stops outputting the operation signal to the ST relay 43 and outputs the operation signal to the ACC relay 41. Then, power is supplied from the battery to the ACC device 44 and a path through which power is supplied from the battery to the solenoid 16 via the ACC relay 41 and the diode 51 is connected.

  Hereinafter, the power supplied from the battery to the solenoid 16 via the ACC relay 41 and the diode 51 is referred to as accessory power e2. The power supplied from the battery to the solenoid 16 via the IG relay 42 and the diode 52 is referred to as ignition power e3.

Next, the interlock release of the electronic key 13 will be described.
As a premise, the engine is driven, the shift lever S is located at a position other than the parking position, and the plunger 16a of the solenoid 16 advances into the key arrangement space K and engages with the engagement recess 23 of the electronic key 13. Suppose you are.

  The interlock release is performed when both of the following two conditions are satisfied. The first condition is that the shift lever S is positioned at the parking position. Then, the contact of the P position detection switch 53 is turned OFF, and the battery power e1 supplied to the solenoid 16 is not supplied (the path of the battery power e1 is divided).

  The second condition is that power supply from the battery to the ACC device 44 and the IG device 45 is stopped. That is, when the pressing portion 25a of the ignition switch 25 is pressed and a pressing operation signal is input, the power supply control ECU 33 stops outputting the operation signal to the ACC relay 41 and the IG relay 42, and the ACC relay 41 and the IG relay. 42 is deactivated and the engine is stopped. As a result, the accessory power e2 and the ignition power e3 supplied to the solenoid 16 are not supplied (the paths of the accessory power e2 and the ignition power e3 are divided).

  When both of the above two conditions are satisfied, the solenoid 16 is not supplied with power from the battery, the plunger 16a is retracted from the key arrangement space K, and the electronic key 13 can be taken out from the slot mechanism 14.

Therefore, according to the key interlock system 11 of the present embodiment, the following effects can be obtained.
(1) In the present embodiment, the key interlock circuit 56 has the following conditions for interlocking the electronic key 13 inserted into the slot mechanism 14. The contact of the key insertion detection switch 21 is turned ON, the power supply control device 55 is controlled to supply at least one of the accessory power e2 and the ignition power e3 to the solenoid 16, and the plunger 16a of the solenoid 16 is moved to the key arrangement space K. To advance to. Alternatively, the contact of the key insertion detection switch 21 is turned ON, the contact of the P position detection switch 53 is turned ON (the shift lever S is positioned at a position other than the parking position), and the plunger 16a of the solenoid 16 is advanced into the key arrangement space K. I tried to make it.

  On the other hand, the key interlock circuit 56 has the following conditions for releasing the key interlock of the electronic key 13. The plunger 16a of the solenoid 16 is retracted from the key arrangement space K when the contact of the P position detection switch 53 is OFF and the accessory power e2 and the ignition power e3 are not supplied to the solenoid 16. When the plunger 16a is retracted from the key arrangement space K, the electronic key 13 inserted into the key arrangement space K of the slot mechanism 14 can be taken out.

  Therefore, the key interlock circuit 56 can suitably interlock the electronic key 13 inserted into the slot mechanism 14. In addition, the power supply control ECU 33 controls the ACC relay 41 and the IG relay 42 for supplying power to the ACC device 44 and the IG device 45, and the plunger 16a of the solenoid 16 is moved backward from the key arrangement space K to enter the key. Interlock can be released. Therefore, it is not necessary for the power supply control ECU 33 to control the solenoid 16, and accordingly, the number of controls of the power supply control ECU 33 can be reduced, and the component cost of the power supply control ECU 33 can be reduced.

  (2) In the present embodiment, when the shift lever S is located at the parking position and the engine is stopped (the pressing portion 25a of the ignition switch 25 is pressed), the plunger 16a of the solenoid 16 is moved backward from the key arrangement space K. I did it.

  Therefore, when the shift lever S is first positioned at the parking position and then the engine is stopped, the shift lever S cannot be switched to another position by the shift lock mechanism 37 at the moment when the engine is stopped. This is because when both the complete explosion signal (the signal indicating that the engine is driven) and the depression signal (the signal indicating that the brake pedal is depressed) are not input to the power control ECU 33, the shift is performed. This is because the lock mechanism 37 makes it impossible to switch the shift lever S located at the parking position to another position. As a result, the shift lock mechanism 37 can function suitably.

  On the other hand, even if the engine is stopped first and then the shift lever S is switched to the parking position, the shift lever S cannot be switched to another position by the shift lock mechanism 37 at the moment when the shift lever S is switched to the parking position. Become. As a result, the shift lock mechanism 37 can function suitably. Therefore, in the vehicle control device 12 of the present embodiment, the electronic key 13 can be taken out from the slot mechanism 14 after the shift lock mechanism 37 has been reliably functioned.

  (3) In this embodiment, the key insertion detection switch 21 is a mechanical switch that turns on when the electronic key 13 is inserted into the slot mechanism 14. Therefore, the key insertion detection switch 21 can perform a switching operation without being controlled by the power supply control ECU 33, and can simplify the circuit configuration as compared with the case where the switching operation is controlled by the power supply control ECU 33. Reduction can be achieved.

  (4) In this embodiment, the P position detection switch 53 is a mechanical switch whose contact is turned off only when the shift lever S is in the parking position and is turned on when the shift lever S is in any other position. Therefore, the same effect as the effect (3) can be obtained.

In addition, you may change the said embodiment into the following aspects.
In the above embodiment, the key interlock circuit 56 of the key interlock system in the automatic transmission type vehicle is embodied. However, the present invention is not limited to this, and may be embodied as a key interlock circuit 61 of a key interlock system in a manual transmission type vehicle. As shown in FIG. 1, the key interlock circuit 61 is configured such that the P position detection switch 53 is omitted and the battery power e1 is not supplied to the solenoid 16. If comprised in this way, the key interlock effect | action similar to the key interlock of the electronic key 13 in the said embodiment will be acquired. On the other hand, the interlock release of the electronic key 13 is as follows. It is assumed that the engine is driven as a premise, and the plunger 16a of the solenoid 16 advances into the key arrangement space K and engages with the engagement recess 23 of the electronic key 13. The interlock release is performed by stopping the power supply from the battery to the ACC device 44 and the IG device 45. As a result, the accessory power e2 and the ignition power e3 supplied to the solenoid 16 are not supplied, the plunger 16a moves backward from the key arrangement space K, and the electronic key 13 can be taken out from the vehicle control device 12.

  In the above embodiment, the ignition switch 25 is a momentary push button switch. Not limited to this, the ignition switch 25 may be an ignition switch 65 having a rotary knob 65a as shown in FIG. The rotary knob 65a is configured to be selected as one of a LOCK position, an ACC position, an ON position, and an ST position by being rotated. When the knob 65a is located at the ACC position, the power supply control ECU 33 is configured to turn on the contact of the ACC relay 41 and supply the accessory power e2 from the battery to the key insertion detection switch 21 (solenoid 16). When the knob 65a is located at the ON position, the power control ECU 33 turns on the contact of the IG relay 42 and supplies the ignition power e3 from the battery to the key insertion detection switch 21 (solenoid 16). To do.

  In the embodiment, the vehicle control device 12 includes the shift lock mechanism 37, but may be omitted. In the case of such a configuration, the key interlock of the electronic key 13 is performed in any one of the following two patterns. The contact of the key insertion detection switch 21 is turned on, and at least one of the ACC relay 41 and the IG relay 42 is turned on by the power supply control ECU 33. Alternatively, the contacts of the key insertion detection switch 21 and the P position detection switch 53 are both turned ON.

  In the embodiment, the key insertion detection switch 21 and the P position detection switch 53 are mechanical contact type switches. Not only this but the key insertion detection switch 21 as a detection means and the P position detection switch 53 as a position determination means may employ non-contact type switches and various sensors. In short, the detection means (key insertion detection switch 21) is turned on when the electronic key 13 is inserted into the slot mechanism 14, and turned off when the electronic key 13 is not inserted into the slot mechanism 14. If it is. Further, the position determination means (P position detection switch 53) may be any one that is turned on when the shift lever S is located at a position other than the parking position and turned off when the shift lever S is located at the parking position. .

  In the above embodiment, the key inserted into the slot mechanism 14 is the electronic key 13, but a mechanical key as a key (a mechanical key that is not inserted but rotated) may be employed. In this case, the mechanical key is provided with an engagement recess similar to the engagement recess 23.

  In the above-described embodiment, the solenoid 16 serving as the disengagement means causes the plunger 16 a to advance into the key arrangement space K when electric power is supplied, and engages the plunger 16 a with the engagement recess 23 of the electronic key 13. Thus, the electronic key 13 cannot be detached from the slot mechanism 14. However, the present invention is not limited to this, and a chuck as a non-detachable means may be employed instead of the solenoid 16. The chuck is configured such that when the electric power is supplied, the electronic key 13 inserted in the slot mechanism 14 is sandwiched so that the electronic key 13 cannot be detached from the slot mechanism 14.

  In the embodiment, the power supply control device 55 is configured by the power supply control ECU 33 and relays (the ACC relay 41 and the IG relay 42). Not limited to this, the power supply control device 55 may be configured by the power supply control ECU 33 and the switching element.

Next, the technical ideas that can be grasped from the above-described embodiments and changes in the modes will be described below.
(A) The power control means inputs ignition power and accessory power from a power source to the power receiving means based on the input of a verification completion signal indicating that the key inserted into the key insertion member is a regular key. a child control whether to supply at least one of the power of the.

(B) said detecting means, when the key in the key insertion member slotted key device is inserted, that it is a mechanical switch that is turned ON.

(C) said position determining means, that it is a mechanical switch which becomes ON when the position shift lever is in the position other than the parking position among a plurality of positions including a parking position.

The block diagram which shows schematic structure of a key interlock system. The perspective view which shows the vehicle interior by which the key interlock system was mounted. The partial cross-sectional schematic which shows the structure of a slot mechanism. Schematic explanatory drawing which shows a shift lever. The front view of the ignition switch in another example.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 13 ... Electronic key as a key, 14 ... Slot mechanism as a key insertion member of a slot-type key apparatus, 16 ... Solenoid as a non-detachable means, 21 ... Key insertion detection switch as a detection means, 44 ... As a power supply means ACC device, 45 ... IG device as power supply means, 53 ... P position detection switch as position determination means, 55 ... Power supply control device as power control means, 56 ... Key interlock circuit, e2 ... Accessory power , E3 ... ignition power, S ... shift lever.

Claims (2)

Detecting means for detecting whether or not a key is inserted into a key insertion member of the slot type key device;
Power control means for controlling whether or not to supply at least one of ignition power and accessory power from the power source to the power supplied means;
The detection means detects that the key is inserted into the key insertion member, and the power control means supplies at least one of ignition power and accessory power from a power source to the power supply means. On the condition that the key is inserted in the key insertion member, the non-detachable means for making the key non-detachable,
A key interlock circuit for a slot-type key device. Position determining means for determining whether or not a shift lever that can be switched to any one of a plurality of positions including the parking position is positioned at the parking position;
The disengagement means is determined when the position determination means determines that the shift lever is not positioned at the parking position, and when the detection means detects that the key is inserted into the key insertion member. 2. The key interlock circuit of the slot type key device according to claim 1, wherein the key inserted into the key insertion member is not removable.

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