JPH0221311Y2 - - Google Patents

Description

[Detailed explanation of the invention] Industrial application field This invention is a car door opening/closing warning device.Specifically, when one of the doors of the car is about to be opened, this is displayed outside the car in advance, and when the door is opened/closed. This invention relates to a device for preventing accidents such as contact between a door and a following vehicle.

BACKGROUND TECHNOLOGY Among conventional car accidents, collisions between a door opening or closing and a following vehicle, etc. are mainly caused by a person getting on or off the driver's seat, passenger seat, or rear seat when the car is stopped, causing damage to the surroundings, especially the car. In most cases, the driver opened the door carelessly without paying attention to what was behind him, and at this time, a following motorcycle or other vehicle tried to pass by the vehicle and collided with the opened door. For this reason, the driver usually calls for sufficient attention from the passengers to ensure their safety, but such human attention has a limit, so if you try to open or close the door, it will be difficult for the driver to mechanically open or close the door. It is desirable to provide a mechanism to display this outside the vehicle.

Problems to be Solved by the Invention Therefore, we can consider a mechanism that detects when the door lock or door handle is operated and displays it outside the vehicle. However, this method of detecting the operating state of the door opening/closing mechanism itself is meaningless because by the time a person outside the vehicle notices the display, the door is already open.

Therefore, the present invention is intended to provide a door opening/closing warning device that can display a warning outside the vehicle in advance when any door of the vehicle is to be opened.

Means for Solving the Problems In order to achieve the above objectives, this invention was developed in view of the current situation where the use of seatbelts in passenger cars is being instructed and compulsory in order to ensure safe driving. A belt shall be worn, and when the vehicle is stopped, when either the driver or a passenger releases the belt, it is recognized as the step before opening the door, and this condition can be identified from outside the vehicle as a door opening/closing warning. It is configured to be displayed, for example, at the bottom of the rear window.

Briefly, the automobile door opening/closing warning device of the present invention includes a sensor that detects the engagement state between the insertion side metal fitting and the fixed side metal fitting of the seat belt, and a display drive signal in response to an engagement detection signal from the sensor. a timer for receiving the display drive signal in response to the detection signal and determining the timing of the display drive signal by counting time, and display drive according to the timing. The vehicle is equipped with a display device driven by a signal, and the display device is provided at a position that can be identified from at least the rear outside the vehicle.

Function The sensor for detecting the engagement of the seat belt metal fittings has the following functions:
Preferably, the magnetic sensor is provided on a fixed side metal fitting, and a flat spring portion of the fixed side metal fitting that moves when the insertion side metal fitting is inserted is attached with a magnet for moving the magnetic sensor, With this, it is possible to completely identify when the seat belt fitting is engaged and when it is disengaged, and when the seat belt is disengaged, a door opening/closing warning signal that follows a predetermined timing pattern is visually displayed. In this way, in the case of a car that does not run unless the seatbelt is fastened, stopping the vehicle and releasing the seatbelt means that the driver or passenger exits the vehicle, that is, opening and closing the door. Since there is a slight time lag between the release and the opening of the door, this can be an effective means of predicting the opening/closing of the door.

DESCRIPTION OF THE EMBODIMENTS FIG. 1 is a perspective view showing how a magnetic sensor 1 and a magnet 2, which serve as sensors for detecting the engagement state of a seat belt fitting, are attached to the fitting. That is, 3 is a channel-shaped main body of the fixed side metal fitting of the seat belt, 3a is a base surface on the inside of the channel, the magnetic sensor 1 is fixed to this base surface 3a, and the corresponding magnet 2 is attached to the tip of the metal fitting 3 as a fulcrum. It is fixed to the inner surface of the leaf spring 4. Therefore, the magnetic sensor 1 generates an on or off signal depending on the distance from the magnet 2 depending on the degree of deflection of the leaf spring 4. The insertion side metal fitting 5 shown to the left of the fixed side metal fitting 3 engages with the fixed side metal fitting 3, so it is inserted into the channel of the fixed side metal fitting 3 from its tip and pushes the top surface of the leaf spring 4. , thereby pushing down the leaf spring 4 and moving the magnet 2 towards the magnetic sensor 1.
, and apply a magnetic detection state. A hook 6 is formed on the upper surface of the leaf spring 4, and the engagement state with the insertion side metal fitting 5 is established, but when this leaf spring 4 is pressed from above, the engagement of the insertion side metal fitting 5 with the hook 6 is established. It is well known that the seat belt is released by releasing the stopped state. Note that 7 and 8 are seat belts to which fixed side metal fittings 3 and insertion side metal fittings 5 are attached, respectively.

FIG. 2 is a block diagram showing an embodiment of the electrical circuit of this invention using the magnetic sensor 1 mounted as shown in FIG. In Fig. 2, magnetic sensor 1
A seatbelt release detection signal consisting of either an on or off state is supplied to an amplifier 9, and the output of the amplifier 9 is supplied to a timer 10. Timer 10 is connected to count setter 11 and has a count input line for receiving pulses from waveform generator 13 in timing drive circuit 12 and a time-up output line for giving a stop command to waveform generator 13. The waveform generator 13 receives the amplified output from the amplifier 9 and generates an output that energizes the drive circuit section 14. The drive circuit section 14 drives the display 15.
Power supply circuit 16 preferably accepts electrical energy from vehicle battery B via switch SW and supplies electrical energy to amplifier 9 and/or display 15 at appropriate voltage levels.

In the above configuration, when the seat belt fittings 3 and 5 are separated from each other, a signal representing the magnetic separation state, that is, the metal fitting release state, from the magnetic sensor 1 is supplied to the amplifier 9 in FIG. 1 and is appropriately amplified. In addition, the waveform generator 13 is energized. Due to this energization, the waveform generator 13 can generate, for example, 0.1 to
A pulse having a repetition period of about 0.3 seconds or less is generated, and the drive circuit section 14 drives the display 15 in accordance with this pulse train. Timer 10 also begins counting pulses from waveform generator 13 upon receiving the metal release signal from amplifier 9 .
The timer 10 issues a stop command to the waveform generator 13 when the number of pulses set by the number setter matches the pulse count. As a result, the waveform generator 13 stops outputting, and therefore the energization of the display 15 via the drive circuit 14 is terminated.

FIG. 3 shows the display surface of the display device 15. For example, a semi-transparent cover 15a attached to the front of a suitable indicator lamp (not shown) may be inscribed with characters such as "Door Caution" or indicating that the door is open. A line display element 15b on which a sketch is written and which moves in the door opening direction as desired is also provided, and can be driven in accordance with the pulse train of the waveform generator.

FIG. 4 is a schematic diagram showing how the above-mentioned display device 8 is installed in a car. In the embodiment, two display devices 15 for the left side and 15' for the right side are placed on both sides of the lower part inside the rear window. It is something. Therefore, the left side display 15 corresponds to opening and closing of the left front door and rear door, and the right side display 1
5' corresponds to opening and closing of the front door and rear door on the right side.

Effects of the invention As described above, this invention breaks away from the idea that warning of door opening can only be given in conjunction with the door opening/closing mechanism, and uses the release of the seatbelt, which at first glance is unrelated to the door, as a preliminary operation for opening/closing the door. Recognized,
This system provides reliable advance notice of door opening/closing.

In addition, according to the present invention, the wearing of seat belts itself is recommended to drivers and passengers, thereby bringing about an epoch-making advance in safe driving of automobiles and accident prevention.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing how the magnetic sensor is attached to the seat belt fitting, FIG. 2 is a block diagram showing an embodiment of the electric circuit of the present invention, and FIG. 3 is a front view showing an example of the display device. FIG. 4 is a partial perspective view showing how the display device is attached to the automobile. 1... Magnetic sensor, 2... Magnet, 3... Fixed side metal fitting, 4... Leaf spring, 5... Insert side metal fitting, 6...
...futsuku, 7, 8...seat belt.

Claims (1)

[Claims for Utility Model Registration] (1) A sensor that detects the engagement state between the insertion side metal fitting and the fixed side metal fitting of the seat belt, and the timing for generating a timing drive signal in response to an engagement detection signal from the sensor. A drive circuit, a timer for determining the timing of the timing drive signal by counting time in response to the detection signal, and a display device driven by the timing drive signal, the display device being arranged at least at the rear outside the vehicle. An automobile door opening/closing warning device characterized in that it is provided in a position that can be more easily identified. (2) The sensor is a magnetic sensor provided on a fixed part of the fixed side metal fitting, and a magnet for activating the magnetic sensor is attached to a leaf spring part of the fixed side metal fitting that moves when the insertion side metal fitting is inserted. The device according to claim (1) of the utility model registration claim, characterized in that: (3) The timing drive circuit includes a waveform generator that generates a pulse train of a predetermined period and a predetermined width in response to a detection signal from the sensor, and dynamically or statically drives the display device using the pulse train. the timer counts pulses from the waveform generator, and when the count reaches a set count, the timer comprises a counter circuit that supplies a pulse termination command to the waveform generator. Scope of claim for utility model registration No.
The device described in paragraph (1). (4) The device according to claim (1) of the utility model registration claim, characterized in that a warning image is written on the display cover of the display device. (5) The device according to claim 1, wherein the display includes a light emitting element array that sequentially emits light in response to the pulse train.