JP2001130378A - Seat belt information display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive seat belt information display device with a simple circuit so as to surely indicate information such as an abnormal condition of a seat belt system to an occupant while lowering increase in the number of parts. SOLUTION: When an occupant starts an engine, an ignition switch 4 is closed. If the occupant wears no seat belt under this condition, a buckle switch 3 is kept closed and a seat belt warning lamp 2 is turned on. When the occupant wears the seat belt, the buckle switch 3 is opened and the seat belt warning lamp 2 is turned off. If a switch driving means 9 is operated because of an abnormal condition of the seat belt system or a diagnosis result based on a self-diagnosis while the occupant wears the seat belt with the engine operated, a seat belt warning switch 8 is turned on for closing. In this way, the seat belt warning lamp 2 is turned on or flashed, so that the occupant can know information about the abnormal condition of the seat belt system or information about the diagnosis result.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a seatbelt information display device for informing an occupant of seatbelt mounting information, seatbelt system abnormality information, and seatbelt system self-diagnosis information.

[0002]

2. Description of the Related Art Conventionally, a seat belt system mounted on a vehicle such as an automobile is used in an emergency such as a vehicle collision.
By restraining the occupant with a seat belt, the occupant is prevented from jumping out of the seat, thereby protecting the occupant. Such a conventional seat belt system is provided with a seat belt non-fastening display device for notifying a user of the non-fastening of the seat belt. In this seat belt non-wearing display device, when the engine is started by the ignition key of the vehicle while the occupant does not wear the seat belt, the normally open ignition key switch is turned on and closed. At this time, since the tongue is not engaged with the buckle and the normally closed buckle switch is off and closed, the display lamp of the seat belt non-wearing display device is turned on to indicate that the seat belt is not worn. When the occupant inserts and engages the tongue into the buckle and fastens the seat belt, the buckle switch is turned on and opened, and the indicator lamp is turned off. In this way, the occupant can know that the seat belt is not worn by turning on the display lamp of the seat belt non-wearing display device after the engine is started, and then know that the seat belt is worn by turning off the display lamp. be able to.

[0003]

By the way, in the conventional seatbelt system, the seatbelt non-wearing display device is provided as described above. However, abnormality of each device in the seatbelt system and provision of the seatbelt system are provided. There is no seat belt system information display device for notifying the occupant of the new device abnormality. Therefore, in order to warn the occupants of these abnormalities, it is necessary to install a new warning lamp and its wiring, which increases the number of parts, increases the cost, and complicates the warning circuit. There was a problem.

The present invention has been made in view of such circumstances, and an object of the present invention is to make it possible to surely inform an occupant of information such as an abnormality of a seat belt system and to reduce the number of parts. It is an object of the present invention to provide an inexpensive seat belt information display device having a simple circuit while suppressing an increase in the number of seat belts.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a seat belt non-fastening indicating means for indicating that a seat belt is not fastened, and the seat belt when the tongue and the buckle are disengaged. A seat belt information display comprising at least a buckle switch for displaying the non-wearing of the seat belt on the non-wearing display means, and not displaying the non-wearing state of the seat belt on the seat belt non-wearing display means when the tongue and the buckle are engaged. A seat belt system information display switch for displaying an abnormality of the seat belt system or a self-diagnosis result of the seat belt system on the seat belt non-fastened display means when the seat belt is turned on, and an abnormality of the seat belt system or the seat belt. The system operates according to the self-diagnosis result of the system and And a switch driving means for turning on the beam information display switch is characterized in the information of the sheet belt system abnormality information or the seat belt system self-diagnosis result of which is displayed in the seatbelt non-wearing display means.

[0006]

In the seat belt information display apparatus according to the present invention, when the occupant does not engage the tongue with the buckle and does not fasten the seat belt after the engine is started, the seat belt non-fastening display means is provided. Indicates that the seat belt is not worn. Thereby, the occupant can know that the seat belt has not been worn yet. When the occupant fastens the seat belt by engaging the tongue with the buckle, the seat belt non-fastening display means does not indicate that the seat belt is not fastened. Thereby, the occupant can know that the seat belt is worn.

Further, when an abnormality occurs in the seat belt system, the abnormality causes the switch driving means to operate to turn on the seat belt system information display switch. Then, the seat belt non-wearing display means is operated to display information on the abnormality of the seat belt system. Thus, the occupant can know that an abnormality has occurred in the seat belt system. Further, for example, when the control circuit of the seat belt system has a self-diagnosis function, the self-diagnosis is performed in the seat belt system, and when it is determined that the seat belt system is abnormal, the switch driving unit is activated. Then, the seat belt system information display switch is turned on, and the seat belt non-wearing display means displays information on the abnormality of the seat belt system based on the self-diagnosis result. Thus, the occupant can know that there is an abnormality in the seat belt system. Then, the method of displaying the abnormality information of the seatbelt system by the seatbelt non-wearing display means is appropriately changed according to the device in the abnormal state of the seatbelt system or the disconnection point (for example, when the display means is a display lamp). Is
By changing the blinking cycle of the display lamp, etc.), the occupant can know the abnormal device or the disconnection point in detail.

As described above, according to the present invention, a seat belt system information display switch and a switch driving unit are simply added to a control circuit of a conventional seat belt system by using a conventional seat belt non-fastening unit. Only by this, the occupant can know not only the wearing of the seat belt, but also the information such as the abnormality of the seat belt system. Moreover, since the increase in the number of components can be suppressed, the display circuit can be simplified and the display circuit can be configured at low cost.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram schematically showing an example of an embodiment of a seatbelt information display device according to the present invention.

As shown in FIG. 1, the seatbelt information display device 1 of this embodiment has a seatbelt warning light (not according to the present invention) for notifying the occupant that the seatbelt is not worn, similarly to the conventional seatbelt non-wearing display device. 2) and a normally closed buckle switch 3 which is turned on and opened when a tongue (not shown) of the seat belt system is inserted into and engaged with a buckle (not shown). The seat belt warning light 2 and the buckle switch 3 are connected in series to a normally open ignition key switch 4 and a battery 5.
Further, a seat belt system including a control circuit of the seat belt system (MSB) is connected to a wiring 7 for connecting the seat belt warning light 2 and the buckle switch 3 via a wiring 6. That is, the electrical control components of each device of the seat belt system are connected to the wiring 6.

Further, the wiring 6 is grounded via a normally open seat belt warning switch (corresponding to the seat belt system information display switch of the present invention) 8, and the seat belt warning switch 8 is provided.
The switch driving means 9 for operating the switch is provided. The seat belt warning switch 8 and the switch driving means 9 are provided in the seat belt system. The switch drive means 9 is activated when an abnormality occurs in the seat belt system or during self-diagnosis of the seat belt system, and turns on and closes the seat belt warning switch 8 to turn on or blink the seat belt warning light 2. By doing so, information about the abnormality of the seat belt system and information about the self-diagnosis result of the seat belt system are notified to the occupant.

In the seat belt information display device 1 of this embodiment configured as described above, similar to the above-described conventional example,
When the occupant starts the engine with the ignition key, the ignition key switch 4 is closed. At this time, since the occupant is not wearing the seat belt and the tongue is not engaged with the buckle, the seat belt warning light 2 is turned on with the buckle switch 3 kept closed. When the occupant engages the tongue with the buckle and fastens the seat belt, the buckle switch 3 opens and the seat belt warning light 2
Turns off. In this way, the seatbelt warning light 2 is turned on once after the engine is started and then turned off, so that the occupant can know that the seatbelt is worn.

If an abnormality occurs in the seat belt system while the engine is operating and the seat belt is fastened, the switch driving means 9 operates to turn on and close the seat belt warning switch 8. As a result, the seat belt warning light 2 is turned on. In this way, the seatbelt warning light 2 is turned on while the engine is operating and the seatbelt is fastened, so that the occupant can know that an abnormality has occurred in the seatbelt system. Similarly, when the self-diagnosis of the seatbelt system is executed while the engine is operating and the seatbelt is fastened, when the self-diagnosis result indicates that the abnormality of the electric control parts of the seatbelt system is detected, or When the disconnection of the wiring is detected, the switch driving means 9 operates similarly to periodically open and close the seat belt warning switch 8. As a result, the seat belt warning light 2 flashes,
The occupant can know the abnormality of the seat belt system based on the self-diagnosis result. In such a case, the seat belt warning light 2 may be set according to the electric control component in an abnormal state or the disconnection point.
By changing the blinking cycle of the vehicle, changing the lighting time and the lighting time of the seatbelt warning light 2 so that they are different from each other, and appropriately combining them. The location can be informed to the occupant in detail.

As described above, according to the seatbelt information display device 1 of this embodiment, the seatbelt warning switch 2 is used in the control circuit of the conventional seatbelt system by using the seatbelt warning lamp 2 conventionally used. By simply adding the switch driving means 9, not only can the occupant be notified of the seat belt being worn, but also the occupant can be reliably informed of information such as an abnormality in the seat belt system. In addition, since the increase in the number of parts can be suppressed, the warning circuit can be simplified and the warning circuit can be configured at low cost.

[0015]

As is apparent from the above description, according to the seatbelt information display device of the present invention, the conventional seatbelt non-fastening means is used and the control circuit of the conventional seatbelt system is used. By simply adding the seat belt system information display switch and the switch driving means, not only can the occupant be notified of the seat belt being worn, but also the occupant can be reliably informed of information such as abnormality of the seat belt system. Moreover, since the increase in the number of components can be suppressed, the display circuit can be simplified and the display circuit can be configured at low cost.

[Brief description of the drawings]

FIG. 1 is a diagram schematically illustrating an example of an embodiment of a seatbelt information display device according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Seat belt information display device, 2 ... Seat belt warning light, 3 ... Buckle switch, 4 ... Ignition key switch, 5 ... Battery, 6 ... Wiring, 7 ... Wiring, 8 ... Seat belt warning switch, 9 ... Switch driving means

Claims (1)

[Claims] 1. A seat belt non-wearing display means for displaying the non-wearing of the seat belt, and when the tongue and the buckle are not engaged, the seat belt non-wearing display means displays the non-wearing of the seat belt. A seat belt information display device comprising at least a buckle switch for not displaying the seat belt non-wearing on the seat belt non-wearing display means when engaging with a buckle; A seat belt system information display switch for displaying a system abnormality or a self-diagnosis result of the seat belt system, and displaying the seat belt system information by operating according to the abnormality of the seat belt system or the self-diagnosis result of the seat belt system. Switch driving means for turning on the switch. , Seatbelt information display apparatus characterized by displaying the information of the self-diagnosis result of said seat belt system abnormality information or the seat belt system with the seat belt unfastened display means.