JP4444036B2 - In-vehicle device and connection structure of in-vehicle device - Google Patents

Description

  The present invention relates to an in-vehicle device and a connection structure for the in-vehicle device.

  In recent years, vehicles can be equipped with various in-vehicle devices as dealer options in order to complement the user's various preferences and improve the convenience of vehicles after vehicle manufacture. As such an in-vehicle device, for example, a burglar alarm device that generates a warning when a third party enters the vehicle and suppresses theft, or a remote device that is configured separately from the vehicle to start the engine remotely. A remote (engine) start device is known. In addition, for example, a key-free device that automatically unlocks the door on condition that the portable device has entered a predetermined area of the vehicle and automatically locks the door when the portable device is removed from the area. Are known.

  Some of these in-vehicle devices have, for example, common accessory functions although their main functions are different. When both in-vehicle devices having such a common function are mounted on a vehicle, each dealer selects only one device that enables the common function by setting a dip switch provided in each device. ing. By doing so, it is avoided that the common functions are effectively duplicated between the in-vehicle devices, and even when a plurality of in-vehicle devices are installed, proper operation of each in-vehicle device can be achieved.

  However, conventionally, when a plurality of in-vehicle devices are mounted on a vehicle, or when a new in-vehicle device is additionally mounted, a device that validates a function common to each in-vehicle device in advance and then validates the function. Must be selected using a dip switch each time, and the work is complicated.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide an in-vehicle device and a connection structure of the in-vehicle device that can easily set the validation / invalidation of functions common among a plurality of in-vehicle devices. Is to provide.

In order to solve the above-described problem, in the first aspect of the present invention, the first external device is configured to be connectable to a first external device having a common function corresponding to a predetermined function of the vehicle - mounted device . Second invalid external signal output means for outputting an invalid signal for invalidating the common function, and invalid signal output means for outputting an invalid signal for invalidating the common function of the in-vehicle apparatus while having the common function It is configured to be connectable to a device , and includes at least one of function restriction means for performing control to invalidate a common function of the in- vehicle device on condition that the invalid signal is input from the second external device. Is the gist.

  According to a second aspect of the present invention, in the in-vehicle device according to the first aspect, the invalid signal output means includes a first connector that outputs the invalid signal, and the function restriction means includes the first connector. And a second connector to which the invalid signal is input by being connected to the first connector.

  In the invention according to claim 3, among the in-vehicle devices according to claim 1 or claim 2, a plurality of in-vehicle devices having at least an invalid signal output means and at least in-vehicle devices having a function limiting means are connected. The in-vehicle device connection structure is configured by connecting the invalid signal output means and the function limiting means between a plurality of the in-vehicle devices.

The operation of the present invention will be described below.
According to the first aspect of the present invention, for example, when both the first in-vehicle device provided with the function limiting means and the second in-vehicle device provided with the invalid signal output means are mounted on the vehicle, the first in-vehicle device is provided. A device corresponds to the first external device, and a second in-vehicle device corresponds to the second external device. In this case, if the invalid signal output from the invalid signal output means of the second in-vehicle device is input to the function limiting means of the first in-vehicle device, the second in-vehicle device in the first in-vehicle device and The common function is disabled. That is, by connecting a plurality of in-vehicle devices having a common function, it is possible to prevent the functions of the in-vehicle devices from becoming effective effectively without operating the operation unit such as the dip switch described above. be able to. Therefore, it is possible to easily set the validation / invalidation of functions common to a plurality of in-vehicle devices.

  According to the second aspect of the present invention, for example, when connecting the first in-vehicle device provided with the function limiting means and the second in-vehicle device provided with the invalid signal output means, the first connector and the first By connecting the two connectors, the invalid signal output from the first connector of the second in-vehicle device is surely input to the second connector of the second in-vehicle device. That is, only by connecting the first connector and the second connector, the common function of the first in-vehicle device with the second in-vehicle device is reliably invalidated. For this reason, the enabling / disabling of the function common among the plurality of in-vehicle devices can be easily and reliably set depending on whether or not the first connector and the second connector are connected.

  According to the third aspect of the present invention, the invalid signal output means is connected to the function restriction means of the other in-vehicle devices among the plurality of in-vehicle devices, so that the functions common to the in-vehicle devices are duplicated between the in-vehicle devices. To prevent it from becoming effective. That is, according to the connection structure of the in-vehicle device of the present invention, it is not necessary to individually set validation / invalidation of functions common to a plurality of in-vehicle devices for each in-vehicle device. Therefore, it is possible to easily and surely set the validation / invalidation of the functions common among the in-vehicle devices.

  ADVANTAGE OF THE INVENTION According to this invention, the connection structure of the vehicle-mounted apparatus which can set easily the validation / invalidation of the function common among several vehicle-mounted apparatus and a vehicle-mounted apparatus can be provided.

DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment embodying the present invention will be described in detail with reference to FIGS.
As shown in FIG. 1, an in-vehicle system (in-vehicle device connection structure) 1 includes a burglar alarm device 10 as an in-vehicle device, a remote start device 20 as an in-vehicle device, and a key-free device 30 as an in-vehicle device. . In the present embodiment, in the relationship between the burglar alarm device 10 and the remote start device 20, the burglar alarm device 10 corresponds to a second external device, and the remote start device 20 corresponds to a first external device. In the relationship between the remote start device 20 and the key-free device 30, the remote start device 20 corresponds to a second external device, and the key-free device 30 corresponds to a first external device.

  A first wire harness (hereinafter referred to simply as “harness”) 40 is connected to the burglar alarm device 10, a second harness 50 is connected to the remote start device 20, and the key-free device 30 is connected to the key-free device 30. The third harness 60 is connected. The first harness 40 is connected to a main harness 70 for mounting electrical components of the vehicle. The second harness 50 is connected to the first harness 40, and the third harness 60 is connected to the second harness 50. That is, the remote start device 20 and the first to third harnesses 40, 50, 60 are connected to the main harness 70 via the first harness 40 via the burglar alarm device 10, the first harness 40 and the second harness 50. The key-free devices 30 are connected to each other.

  Specifically, as shown in FIGS. 2 to 4, the burglar alarm device 10 includes a connector 10a, the remote start device 20 includes a connector 20a, and the key-free device 30 includes a connector 30a. In the present embodiment, the connectors 10a, 20a, and 30a are configured in the same shape and size.

  On the other hand, the first harness 40 is a three-pronged wire harness and includes a connector 40a that can be connected to the connector 10a of the burglar alarm device 10 at the first end. The first harness 40 includes a connector 40b that can be attached to the connector 70a of the main harness 70 at the second end, and a connector 40c (first connector) that can be connected to the connector 40b at the third end. ing. Furthermore, the 1st harness 40 is provided with the wire part 40d which electrically connects between each connector 40a, 40b, 40c. This wire part 40d is comprised by the some electric wire.

The second harness 50 has a configuration equivalent to that of the first harness 40, a connector 50a that can be connected to the remote start device 20, and connectors 50b (second connectors) and 50c that have the same configuration as the connectors 40b and 40c. (First connector) and a wire portion 50d. The third harness 60 includes a connector 60a that can be connected to the key-free device 30 at the first end, and a connector 60b ( second connector) that can be connected to the connector 50c at the second end. A wire portion 60c for electrically connecting the connectors 60a and 60b is provided. Via these first to third harnesses 40, 50, 60, control information of each device 10, 20, 30 is exchanged with an electric control system device of the vehicle.

  The theft alarm device 10 has a security function that issues an alarm when it is determined that the door has been unlocked illegally or when it is determined that a third party has entered the vehicle. Specifically, as shown in FIG. 2B, the theft alarm device 10 includes a theft alarm microcomputer (theft alarm microcomputer) 11. The burglar alarm microcomputer 11 receives various signals (a signal indicating a door locking / unlocking state or an intruder in the vehicle detected from the electric control system device of the vehicle via the first harness 40). Based on the signal), an alarm is issued when it is determined that the door has been unlocked illegally or when a third party has entered the vehicle.

  The remote start device 20 includes a portable device (not shown), and mainly has a function of starting an engine based on a remote operation by the portable device, and has a simple security function, and the door is illegally operated. An alarm is issued when it is determined that the door has been unlocked. Specifically, as shown in FIG. 3B, the remote start device 20 includes a remote start microcomputer (remote start microcomputer) 21. The remote start microcomputer 21 is a portable device in a state where the door is locked based on various signals (for example, a signal indicating a door unlocking / unlocking state) input from the electric control system device of the vehicle via the harnesses 40 and 50. When the remote operation is recognized, a signal to start the engine is output to the electric control system device via the harnesses 40 and 50. Further, the remote start microcomputer 21 issues an alarm when it is determined that the door has been unlocked illegally based on various signals input from the electric control system device of the vehicle via the harnesses 40 and 50.

  The key-free device 30 automatically unlocks the door on the condition that a portable device (not shown) has entered the predetermined area of the vehicle, and automatically locks the door when the portable device is removed from the area. As with the remote start device 20, a simple security function is included. Specifically, as shown in FIG. 4B, the key-free device 30 includes a key-free microcomputer (key-free microcomputer) 31. When the key-free microcomputer 31 receives the ID signal transmitted from the portable device by a transmission circuit (not shown), the key-free microcomputer 31 compares the ID code included in the ID signal with the ID code that the key-free microcomputer 31 has. Then, on condition that both ID codes match, the key-free microcomputer 31 outputs a signal for unlocking the door to the electric control system device via the first to third harnesses 40, 50, 60. On the other hand, when the key-free microcomputer 31 cannot receive the ID signal transmitted from the portable device, the key-free microcomputer 31 sends a signal for locking the door to the electric control system device via the first to third harnesses 40, 50, 60. Output. Further, the key-free microcomputer 31 issues an alarm when it is determined that the door has been unlocked illegally based on various signals input from the vehicle electrical control system device via the harnesses 40, 50, 60.

  2A, the connector 10a of the burglar alarm device 10 is provided with an invalid signal output terminal 12 as invalid signal output means. As shown in FIG. 2B, the invalid signal output terminal 12 is grounded in the burglar alarm device 10. In the present embodiment, this ground voltage signal corresponds to an invalid signal. The pin of the connector 40a corresponding to the invalid signal output terminal 12 of the connector 10a is connected to the connection terminal A of the connector 40c by the wire portion 40d. For this reason, when the harness 40 is connected to the burglar alarm device 10, the connection terminal A of the connector 40 c is electrically connected to the invalid signal output terminal 12. In addition, all the connectors 40a-40c, 50a-50c, 60a, 60b of the 1st-3rd harnesses 40, 50, 60 in this embodiment have a 6-pin configuration. The connection terminal A is set to a specific pin in the pin arrangement of the connectors 40a, 40b, 40c, for example, the sixth pin. Hereinafter, for convenience of explanation, “connection terminal A” refers to the sixth pin in the pin array. In the pin array of the connector 70a of the main harness 70, the terminal corresponding to the connection terminal A is in an open state.

  As shown in FIG. 3A, the connector 20a of the remote start device 20 is provided with a function selection terminal 22 and an invalid signal output terminal 23 as invalid signal output means. As shown in FIG. 3B, the function selection terminal 22 is connected to the remote start microcomputer 21 and to the power supply voltage Vcc through the pull-up resistor R1. The invalid signal output terminal 23 is grounded in the remote start device 20.

  The pin of the connector 50a corresponding to the function selection terminal 22 of the connector 20a is connected to the connection terminal A of the connector 50b, and the pin of the connector 50a corresponding to the invalid signal output terminal 23 of the connector 20a is connected to the connection terminal A of the connector 50c. It is connected. Therefore, when the second harness 50 is connected to the remote start device 20, the connection terminal A of the connector 50 b is electrically connected to the function selection terminal 22, and the connection terminal A of the connector 50 c is electrically connected to the invalid signal output terminal 23. Connected.

  When the invalid signal is input via the connector 50b, that is, when the voltage of the function selection terminal 22 is the ground voltage value, the remote start microcomputer 21 performs control to invalidate its own security function. On the other hand, when the voltage at the function selection terminal 22 is other than the ground voltage value, the remote start microcomputer 21 performs control to enable its own security function.

  As shown in FIG. 4A, the connector 30a of the key-free device 30 is provided with a function selection terminal 32. As shown in FIG. 4B, the function selection terminal 32 is connected to the key-free microcomputer 31 and to the power supply voltage Vcc via the pull-up resistor R2. The pin of the connector 60a corresponding to the function selection terminal 32 of the connector 30a is connected to the connection terminal A of the connector 60b by the wire portion 60c. For this reason, when the third harness 60 is connected to the key-free device 30, the connection terminal A of the connector 60 b is electrically connected to the function selection terminal 32.

  When the invalid signal is input through the connector 60b, that is, when the voltage of the function selection terminal 32 is the ground voltage value, the key-free microcomputer 31 performs control to invalidate its own security function. On the other hand, when the voltage at the function selection terminal 32 is other than the set voltage value, the key-free microcomputer 31 performs control to enable its own security function.

  Next, FIG. 5 to FIG. 5 show examples of modes in which the security function, which is a common function of the devices 10, 20, and 30, is enabled / disabled when the devices 10, 20, and 30 are connected to each other. This will be described according to 7.

First, the case where the burglar alarm device 10 and the remote start device 20 are connected to the main harness 70 via the first harness 40 and the second harness 50 will be described.
As shown in FIG. 5, when the burglar alarm device 10 and the remote start device 20 are connected by the first harness 40 and the second harness 50, the function selection terminal 22 of the remote start device 20 is the second harness 50, the first harness. 40 and the invalid signal output terminal 12. For this reason, the voltage of the function selection terminal 22 becomes a ground voltage value, and the signal input from the function selection terminal 22 to the remote start microcomputer 21 changes from the H level to the L level. When the input signal from the function selection terminal 22 becomes L level, the remote start microcomputer 21 invalidates its own security function. That is, the remote start microcomputer 21 and the function selection terminal 22 function as function restriction means. Therefore, when the burglar alarm device 10 and the remote start device 20 are connected to the main harness 70, only the security function of the burglar alarm device 10 is effective.

Next, the case where the remote start device 20 and the key-free device 30 are connected to the main harness 70 via the second harness 50 and the third harness 60 will be described.
As shown in FIG. 6, when the remote start device 20 and the key-free device 30 are connected by the second harness 50 and the third harness 60, the function selection terminal 22 of the remote start device 20 is opened, and the function selection terminal 22 The voltage becomes the power supply voltage Vcc by the pull-up resistor R2 and does not become the ground voltage value. That is, the signal input from the function selection terminal 22 to the remote start microcomputer 21 becomes H level. When the input signal from the function selection terminal 22 becomes H level, the remote start microcomputer 21 enables its own security function. On the other hand, the function selection terminal 32 of the key-free device 30 is grounded via the third harness 60, the second harness 50, and the invalid signal output terminal 23. For this reason, the voltage of the function selection terminal 32 becomes the ground voltage value, and the signal input from the function selection terminal 32 to the key-free microcomputer 31 changes from the H level to the L level. When the input signal from the function selection terminal 32 becomes L level, the key-free microcomputer 31 invalidates its own security function. That is, the key-free microcomputer 31 and the function selection terminal 32 function as function limiting means. Therefore, only the security capabilities of the remote Start device 20 is valid for the main harness 70.

Next, the case where the burglar alarm device 10 and the key-free device 30 are connected to the main harness 70 via the first harness 40 and the third harness 60 will be described.
As shown in FIG. 7, when the theft alarm device 10 and the key-free device 30 are connected by the first harness 40 and the third harness 60, the function selection terminal 32 of the key-free device 30 is the third harness 60, the first harness. 40 and the invalid signal output terminal 12. For this reason, the voltage of the function selection terminal 32 becomes the ground voltage value, and the signal input from the function selection terminal 32 to the key-free microcomputer 31 changes from the H level to the L level. The key-free microcomputer 31 disables its own security function when the input signal from the function selection terminal 32 becomes L level. Therefore, when the burglar alarm device 10 and the key-free device 30 are connected to the main harness 70, only the security function of the burglar alarm device 10 is effective.

  Further, when the remote start device 20 or the key-free device 30 is independently connected to the main harness 70 via the corresponding second harness 50 or third harness 60, both enable their own security functions. . Specifically, when the second harness 50 is connected to the main harness 70, the remote start microcomputer 21 enables its own security function because the voltage of the function selection terminal 22 becomes the power supply voltage Vcc. When the third harness 60 is connected to the main harness 70, the key-free microcomputer 31 activates its own security function because the voltage of the function selection terminal 32 becomes the power supply voltage Vcc. Since the burglar alarm device 10 does not include a function limiting unit, the burglar alarm microcomputer 11 always enables the security function.

  In this way, each device 10, 20, 30 enables or disables its own security function according to the connection destination device 10, 20, 30. Then, the remote start device 20 and the key-free device 30 invalidate the security function when connected to the theft alarm device 10, and the key-free device 30 is connected to the theft alarm device 10 or the remote start device 20. Disable security features.

Therefore, according to the present embodiment, the following effects can be obtained.
(1) When connected to the burglar alarm device 10, the remote start device 20 invalidates its own security function. Similarly, when the key-free device 30 is connected to the theft alarm device 10 or the remote start device 20, the key-free device 30 invalidates its security function. For this reason, by connecting the devices 10, 20, and 30 to each other, it is possible to validate the security function of only one of the devices 10, 20, and 30 without operating an operation unit such as a dip switch. it can. In other words, it is possible to prevent the security function from being duplicated and effective between the devices 10, 20, and 30. Therefore, according to the in-vehicle system 1, it is possible to easily set the validation / invalidation of the security function common to the plurality of devices 10, 20, and 30.

  (2) The remote start device 20 is connected to the burglar alarm device 10 via the connector 50b and the connector 40c. For this reason, when the remote start device 20 and the burglar alarm device 10 are connected, the voltage of the function selection terminal 22 in the remote start device 20 surely becomes the ground voltage value, and the security function in the remote start device 20 is surely disabled. Is done. The key-free device 30 is connected to the remote start device 20 via the connector 60b and the connector 50c, or to the theft alarm device 10 via the connector 60b and the connector 40c. Therefore, when the key-free device 30 and the remote start device 20 are connected, or when the key-free device 30 and the burglar alarm device 10 are connected, the voltage of the function selection terminal 32 in the key-free device 30 is surely grounded. It becomes a voltage value, and the security function in the key-free device 30 is surely invalidated. Therefore, according to the in-vehicle system 1, it is possible to easily and reliably set the security function validation / invalidation between the devices 10, 20, and 30 depending on whether or not the connectors 40c, 50b, 50c, and 60b are connected. .

(3) The harnesses 40, 50, and 60 include a wire portion 40d, a wire portion 50d, and a wire portion 60c, respectively. For this reason, even when each device 10, 20, and 30 is mounted in a small space in the vehicle, if the wire portions 40d, 50d, and 60c are bent to avoid interference with other devices in the mounting space. The connectors 40 b , 40 c, 50 b , 50 c, 60 b, 70 a can be reliably connected. Therefore, according to the in-vehicle system 1, the degree of freedom in arrangement when the devices 10, 20, and 30 are mounted is improved, and the security function is more surely validated and invalidated between the devices 10, 20, and 30. Can be set to

  (4) The remote start microcomputer 21 controls validation / invalidation of the security function depending on whether the function selection terminal 22 is grounded. Similarly, the key-free microcomputer 31 controls the security function validation / invalidation depending on whether or not the function selection terminal 32 is grounded. For this reason, the remote start microcomputer 21 and the key-free microcomputer 31 are not easily affected by, for example, disturbance noise when controlling the enabling / disabling of the security function. Therefore, according to the in-vehicle system 1, it is possible to set the security function validation / invalidation between the devices 10, 20, and 30 more reliably.

  (5) When the devices 10, 20, and 30 are connected to each other, only one of them always enables the security function. By the way, in the conventional in-vehicle device, since the valid / invalid of the function common to each in-vehicle device is individually set using the DIP switch, the same function is effective in a plurality of in-vehicle devices depending on the work mistake. There was a fear. According to the in-vehicle system 1, the common function setting work itself can be omitted at the dealer, so that such work mistakes can be eliminated.

  (6) The invalid signal used when the remote start device 20 or the key-free device 30 invalidates the security function is the first harness 40, the second harness 50, or the third that receives the control information of the devices 20 and 30. The inside of the harness 60 is transmitted. That is, when the remote start device 20 and the key-free device 30 are connected to the main harness 70 of the vehicle, an invalid signal transmission route is inevitably secured. For this reason, for example, in a dealer, the security function of each of the devices 10, 20, and 30 is carried out in a series of operations for mounting the devices 10, 20, and 30 on the vehicle without being aware of enabling / disabling of the security function. Can be enabled / disabled. Therefore, it is possible to eliminate the troublesomeness of manually enabling / disabling the security function.

  (7) When the remote start device 20 and the key-free device 30 are connected to the theft alarm device 10, the security function is disabled, and the key-free device 30 is connected to the theft alarm device 10 or the remote start device 20. Disable security features. That is, there is a priority order for enabling the security function between the devices 10, 20, and 30, and the devices 10, 20, and 30 that are connected to the main harness 70 in an early order are the other devices 10, 20, and 30. Enable the security function in preference to. For this reason, by connecting the burglar alarm device 10 to the main harness 70 prior to the other devices 20, 30, the burglar alarm device is more effective than the security function that is an accessory function of the remote start device 20 and the key-free device 30. Security functions, which are ten main functions, can be prioritized and enabled. In general, even if the functions are common among the devices 10, 20, and 30, the functions in the main position are more enriched than the functions in the auxiliary position. Therefore, only the security functions of the devices 10, 20, and 30 that can exhibit the security function most effectively can be enabled based on the order of connection to the main harness 70.

In addition, you may change embodiment of this invention as follows.
In the embodiment, the priority order determined between the devices 10, 20, and 30 is not limited to the order of the burglar alarm device 10, the remote start device 20, and the key-free device 30 as in the embodiment. For example, the security functions of the devices 10, 20, and 30 newly added to the vehicle may be preferentially enabled.

Specifically, as shown in FIG. 8, the key-free device 30 may be connected to the main harness 70 by a first harness 80 that has the same configuration as the first harness 40. The first harness 80 is changed so that the function selection terminal 32 and the connection terminal A of the connector (second connector) to which the other devices 10 and 20 are connected are electrically connected. Similarly, the remote start device 20 may be connected to the main harness 70 via the second harness 90 and the first harness 80 that have the same configuration as the second harness 50. The second harness 90 is changed so that the invalid signal output terminal 23 and the connection terminal A of the connector (first connector) connected to the first harness 80 are electrically connected. Furthermore, the burglar alarm device 10 may be connected to the main harness 70 via the third harness 100 and the harnesses 80 and 90 having the same configuration as the third harness 60. In the third harness 100, the connection terminals A side of the connector (first connector) which invalid signal output terminal 12 is connected to the second harness 90 is changed to the Hare by being electrically connected. In this way, when the key-free device 30 is first installed and then the remote start device 20 is newly installed, the security function of the key-free device 30 becomes invalid and the security function of the remote start device 20 is valid. It becomes. Furthermore, as shown in FIG. 8, when the burglar alarm device 10 is additionally mounted, the security function of the remote start device 20 becomes invalid and the security function of the burglar alarm device 10 becomes valid. Even if it does in this way, while being able to acquire the effect of said (1)-(6), only the common function of the apparatus mounted additionally can be validated. That is, according to such a modified example, the priority order in which the common function is enabled can be reversed from that in the embodiment.

  In the embodiment, the burglar alarm device 10 includes only the invalid signal output terminal 12, and the key-free device 30 includes only the function selection terminal 32. However, the burglar alarm device 10 may further include a function selection terminal connected to the burglar alarm microcomputer 11 and connected to the power supply voltage Vcc via a pull-up resistor. The key-free device 30 may further include an invalid signal output terminal that is grounded in the key-free device 30. Even if it does in this way, the effect of said (1)-(7) can be acquired. In short, each of the devices 10, 20, 30 is configured to include at least one of an invalid signal output unit and a function limiting unit based on the priority order for enabling the functions common to the devices 10, 20, 30. I just need it.

  In the above-described embodiment, a fixed voltage, for example, a voltage (invalid signal) ½ of the power supply voltage Vcc may be applied to the invalid signal output terminals 12 and 23 instead of the ground voltage. In this case, the remote start microcomputer 21 has a function selection terminal 22 having a voltage value that is 1/2 of the power supply voltage Vcc, and the key-free microcomputer 31 has a function selection terminal 32 having a voltage value that is 1/2 of the power supply voltage Vcc. Each security function may be disabled. Even if it does in this way, the effect similar to said (1)-(7) can be acquired.

  In the embodiment, the devices 10, 20, and 30 may not be configured to be connected by the first harness 40, the second harness 50, and the third harness 60. For example, as shown in FIG. 9, the connector 40 c may be mounted on the burglar alarm device 10, the connector 50 b and the connector 50 c may be mounted on the remote start device 20, and the connector 60 b may be mounted on the key-free device 30. The devices 10, 20, and 30 may be directly connected by these connectors 40c, 50b, 50c, and 60b. If it does in this way, the 2nd harness 50 and the 3rd harness 60 become unnecessary, and the manufacturing cost of in-vehicle system 1 can be controlled.

  In the embodiment, the devices 10, 20, and 30 transmit invalid signals separately from the first harness 40, the second harness 50, and the third harness 60 to which various information of the devices 10, 20, and 30 is transmitted. The wiring harness may be connected to each other. That is, the in-vehicle system 1 includes a wire harness that connects the invalid signal output terminal 12 of the burglar alarm device 10 and the function selection terminal 22 of the remote start device 20, and the invalid signal output terminal 23 of the remote start device 20 and the key-free device 30. A wire harness for connecting the function selection terminal 32 may be newly provided. Even if it does in this way, the effect of said (1)-(5), (7) can be acquired.

In the embodiment, the in-vehicle device is not limited to the burglar alarm device 10, the remote start device 20, and the key-free device 30. For example, a car audio device or a car navigation device may be used. Also such devices if mounted on a vehicle, the enable and disable functions that are common to both simply by connecting with the harness can be carried out easily and reliably with respect to each device.

Next, technical ideas that can be grasped from this embodiment and other embodiments will be described below.
(1) The in-vehicle apparatus, the invalid signals output means, a first wire and an output terminal for outputting the invalid signal, one end is connected to the output terminal, the other end connected to the first connector With a harness,
The function limiting means includes an input terminal to which the invalid signal is input, and a second wire harness having one end connected to the input terminal and the other end connected to the second connector. In the embodiment, the output terminal corresponds to an invalid signal output terminal, and the input terminal corresponds to a function selection terminal.

(2) In the connection structure of the vehicle device, the second connector is connectable to the electrical component mounting connector of the vehicle, in a state where the connector of the second is connected to the power instrumentation products mounted connector The vehicle-mounted device and the electric control system device of the vehicle are electrically connected via the second connector and the electrical component mounting connector, and the second connector is the first connector of another vehicle-mounted device. In the state of being connected to the vehicle, the vehicle-mounted device and the electric control system of the vehicle via the second connector, the first connector and the second connector of the other vehicle-mounted device, and the electrical component mounting connector The device must be electrically connected.

The schematic diagram of the vehicle-mounted system in this embodiment. (A) is a schematic diagram which shows the connection relation of the burglar alarm device and 1st harness in this embodiment, (b) The electric block diagram of the burglar alarm device. (A) is a schematic diagram which shows the connection relation of the remote start apparatus and 2nd harness in this embodiment, (b) The electric block diagram of the remote start apparatus. (A) is a schematic diagram which shows the connection relation of the key free apparatus and 3rd harness in this embodiment, (b) The electric block diagram of the key free apparatus. The electrical block diagram when the burglar alarm device and remote start device in this embodiment are connected. The electric block diagram when the remote start apparatus and key free apparatus in this embodiment are connected. The electric block diagram when the burglar alarm device and key free device in this embodiment are connected. The schematic diagram of the vehicle-mounted system in other embodiment. The schematic diagram of the vehicle-mounted system in other embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... In-vehicle system as connection structure of in-vehicle device, 10 ... Burglar alarm device as in-vehicle device, 12, 23 ... Invalid signal output terminal as invalid signal output means, 20 ... Remote start device as in-vehicle device, 21 ... Function Remote start microcomputer as limiting means, 22 , 32 ... Function selection terminal as function limiting means, 30 ... Key-free device as in-vehicle device, 31 ... Key-free microcomputer as function limiting means, 40c, 50c ... First Connector 50b, 60b, second connector.

Claims (3)

Invalid signal output means configured to be connectable to a first external device having a common function corresponding to a predetermined function of the vehicle - mounted device , and outputting an invalid signal that invalidates the common function of the first external device; ,
The invalid signal from the second external device is configured to be connectable to a second external device having an invalid signal output unit that has the common function and outputs an invalid signal that invalidates the common function of the in-vehicle apparatus . A vehicle - mounted device comprising at least one of function restriction means for performing control to invalidate a common function of the vehicle - mounted device on the condition of the input. The invalid signal output means includes a first connector that outputs the invalid signal,
2. The function limiting unit includes a second connector configured to be connectable to the first connector, and to which the invalid signal is input by being connected to the first connector. The in-vehicle device described in 1. A connection structure for an in-vehicle device configured by connecting a plurality of in-vehicle devices having at least an invalid signal output unit and at least an in-vehicle device having at least a function limiting unit among the in-vehicle devices according to claim 1 or 2. Because
A connection structure for an in-vehicle device, wherein the invalid signal output means and the function restriction means are connected between the plurality of in-vehicle devices.

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