JPS62152922A - Opening device for trunk lid, fuel lid, and the like, of car - Google Patents

Abstract

PURPOSE:To prevent the inadvertent opening of a fuel lid, etc. by preventing a switching element from being turned ON if an ignition key switch is turned ON or at start position when a signal is supplied from an opening operation switch. CONSTITUTION:When an ignition key switch 4 is turned ON or at start position, a signal in Hi-level is input into the input terminal (a) of a control circuit 5, and the signal in Lo-level is input at the position other than the start position. When an operating switch 3 is turned OFF, the signal in Hi-level is input from a battery source +B into the input terminal (b) of the control circuit 5, and when the operating switch is turned ON, the signal in Lo-level is input. Therefore, if the operation switch 3 is turned ON, when a key switch 4 is turned ON or at start position,the input terminal (a) of the control circuit 5 becomes Hi, and the input terminal (b) becomes Lo. Therefore, the output of a NOR circuit 6 becomes Lo, and a switching element 2 is turned OFF, and no electric current flows in a solenoid 1.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to an opening device for an automobile fuel lid, trunk lid, etc., in which an operation switch is turned on when the engine is rotating or is likely to rotate. However, the fuel lid, trunk lid, etc. are prevented from opening.

(Prior art) Conventional opening devices for fuel lids, trunk lids, etc. are those that release the trunk lid lock using a wire, or as shown in Fig. 2, when the operation switch SW is turned on, a switching element S operates and a solenoid is activated. There was one in which a current flows through L, which activates solenoid L and releases the trunk lid lock, fuel lid lock, etc.

(Problems with the Prior Art) All of these devices can operate even when the engine is rotating, so if the operation switch is accidentally operated while the engine is rotating, the fuel lid, trunk lid, etc. will open. If the fuel lid opens while the engine is running, this means that the engine can continue to rotate even while refueling, which is extremely dangerous. Furthermore, if the trunk lid opens while the vehicle is running, the view to the rear is obstructed, which poses a safety problem, and in some cases, there is also the danger that cargo in the trunk may fly out.

(Means for Solving Interval Points) An object of the present invention is to prevent the fuel lid and trunk lid from opening when the ignition key switch is in the on or start position even if the operation switch is turned on. be.

As shown in FIG. 1, the opening device of the present invention includes a solenoid l for opening a fuel lid, trunk lid, etc.
It is composed of a switching element 2 that turns ON and OFF the energization of the solenoid, an operation switch 3, and a control circuit 5 that controls the switching element 2 using a signal from the operation switch 3 and a signal from the ignition key switch 4. The circuit 5 is configured such that even if a signal is input from the operating switch 3, the switching element 2 is not turned on when the ignition key switch 4 is in the on or start position.

(Operation of the Invention) When the ignition key switch 4 is in the on or start position, a Hi level signal is input to the input terminal a of the control circuit 5, and in other positions, a LO level signal is input.

When the operation switch 3 is turned OFF, a Hi level signal is inputted from the battery power supply element B to the input terminal of the control circuit 5, and when it is turned ON, a Lo level signal is inputted.

Therefore, when the operation switch 3 is turned on when the ignition key switch 4 is on or in a position other than start, the input terminal a of the control circuit 5 becomes LO, and the input terminal also becomes LO. Therefore, the output of the NOR circuit 6 becomes Hi, the switching element 2 is turned on, current flows through the solenoid 1, and the fuel lid, trunk lid, etc. are opened.

When the operation switch 3 is turned on while the ignition key switch 4 is in the on or start position, the input terminal a of the control circuit 5 becomes Hi and the input terminal becomes Lo, so the output of the NOR circuit 6 becomes LO. , the switching element 2 is turned off, no current flows through the solenoid 1, and the fuel lid, trunk lid, etc. are not opened.

As described above, in FIG. 1, even if the operating switch 3 is turned on, the fuel lid, trunk lid, etc. will not be opened as long as the ignition key switch 4 is in the on or start position.

(Example) Many microcomputers are used in recent automobiles for various control purposes. Some of these microcontrollers still have plenty of processing power. In the present invention, these microcomputers with sufficient capacity can be used as the control circuit 5.

Figure 3 shows how to reduce the number of conventional signal lines by multiplexing the switch signals concentrated near the driver's seat at one station.
This is a wiring system in which required switch signals are input to a microcomputer in one transmission line and serially multiplexed through a single transmission path to other multiplexing stations 11 where the microcomputers are installed at various locations.

For example, the function of the control circuit 5 in the present invention is assigned to the multiplex station 11 in FIG.
It is possible to control the present invention using software.

(Effects of the Invention) The fuel lid, trunk lid, etc. Since the lid etc. are designed to be opened, there is no danger that the two-wheel lid, trunk lid, etc. will open even if the operation switch is accidentally turned on while the engine is rotating or the vehicle is running.

If the functions of the control circuit 5 of the present invention are realized using a multi-station microcomputer already installed in the vehicle, an inexpensive open device can be realized.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of the present invention, Fig. 2 is an explanatory diagram of a conventional solenoid-based trunk lid opening device, and Fig. 3 is an explanatory diagram of the case where an existing microcomputer installed in a vehicle is used as the control circuit of the present invention. It is. l is the solenoid 2 is the switching element 3 is the operation switch 4 is the ignition key switch 5 is the control circuit

Claims (1)

[Claims] A solenoid that opens the fuel lid, trunk lid, etc., a switching element that turns ON/OFF the power to the solenoid, an operation switch, and a control circuit that controls the switching element using signals from the operation switch and signals from the ignition key switch. A fuel lid and a trunk of an automobile, characterized in that the control circuit does not turn on the switching element when the ignition key switch is in the on or start position even if a signal from the operation switch is input. Open devices such as lids.