JPS6368443A - Engine hood on-off gear - Google Patents

Abstract

PURPOSE:To prevent an engine hood from being unlawfully opened, by installing a device which detects an unlawful invasion into a car room, and keeping the engine hood in closure via an actuator at the time of detection of the unlawful invasion. CONSTITUTION:In case there is no unlocking by a key, when door lock detecting switches DSds-DSrs and door latch detecting switches DLds-DLrs are operated for opening or closing, it comes to an antitheft mode. If so, a port PO4 is turned on and a relay 15 is energized with current, thereby opening the switch part. In consequence, even if an operating switch 56 in a car room is operated, an actuator 17 is no longer actuated. That is to say, a hood on-off gear C is set to a locked state. With this constitution, opening operation of the engine hood by an illegal invader is thus preventable.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to an engine hood opening/closing device, and particularly to prevention of opening of the engine hood by an unauthorized method.

(Prior Art) Nowadays, so-called automobile anti-theft devices are installed in vehicles, and when an unauthorized opening of a vehicle door is detected, electronic control means activates the horn or flashes the headlights, etc. The device is configured to notify the user of theft and prevent theft.

However, the electronic control device is operated by a battery located within the engine hood.

As shown in FIG. 17, the engine hood opening/closing device that opens and closes the engine hood in which the battery is disposed has not conventionally been provided with any locking function. In other words, the striker 8 installed on the engine hood
A latch 201 is rotatably attached to the vehicle body with a shaft 201a and engages with the striker 3 when the engine hood is closed and rotates to the latched position (the state shown in FIG. 17), and a latch 201 is rotatably attached to the vehicle body with a separate shaft 202b. A pole 202 is freely disposed and can engage the latch 201 at the latched position of the latch 201 and hold the latch 201 at the latched position, and the pole 202 is connected to the pole 202 via a wire 203.
It consists of an unlatch operation knob (not shown) provided in the vehicle interior to operate the latch 201 and release the engagement with the latch 201.

(Problem to be Solved by the Invention) Therefore, an unauthorized intruder opens the hood opening/closing device using the unlatch operation knob immediately after entering the vehicle interior, and removes the battery inside the engine hood or connects the electronic control device to the battery. Can cut the wiring. As a result, the electronic control device becomes inoperable and the anti-theft device is brought down. In other words, with the conventional engine hood opening/closing device,
The anti-theft function was insufficient.

SUMMARY OF THE INVENTION In view of the problems of the conventional device described above, the technical object of the present invention is to prevent the engine hood opening/closing device from being opened by unauthorized persons.

[Structure of the invention]

(Means for solving the problem) In order to solve this problem, the present invention takes the following measures. That is, a striker disposed on an engine hood that is attached to the vehicle body via a hinge mechanism so as to be openable and closable, and a striker that is rotatably attached to the vehicle body and engages with the striker when the engine hood is closed and is in the latched position. a rotatable latch; a pawl rotatably disposed on the vehicle body and capable of engaging the latch in a latching position of the latch and holding the latch in the latching position; an electric actuator that operates the pole to release the engagement with the latch; a switch disposed in the vehicle interior that instructs the electric actuator to be energized; and a vehicle state detection means that detects the state of the vehicle. and an energizing means for energizing the electric actuator in response to an energizing instruction signal from the switch to enable opening of the engine hood when the vehicle is in a predetermined state. It is in.

(Function) As described above, in the present invention, the engine hood opening/closing device
An electric actuator disengages the pole and latch. Moreover, the state of the vehicle is detected by the vehicle state detection means, and when the vehicle is in a predetermined state, the urging means operates the actuator by operating a switch disposed within the vehicle interior. Therefore, the engine hood can be opened by operating from inside the vehicle as before.

However, when the vehicle state detection means detects unauthorized intrusion into the vehicle interior, the energizing means does not operate the actuator in any way even if the switch is operated. Therefore, it is possible to prevent the engine hood from being opened, and it is possible to prevent the system failure of the anti-theft device due to battery removal or the like.

(Embodiment) A preferred embodiment of the present invention will be described below with reference to the accompanying drawings, in which the present invention is applied to a so-called four-door vehicle. in this case,
An engine hood opening/closing device is configured as part of the anti-theft device.

The anti-theft device 10 is constructed as shown in FIG.

Door lock devices Dd-Dp-Dr 1 and Dr2 (
Door lock detection switch DSds/DSps-DSrSl/DS that detects locking/unlocking of the door lock device (see Figure 2; Figure 2 only shows the driver's seat and rear seat door lock devices)
rS2 and each door lock device D corresponding to opening and closing of each door
Door latch detection switch DLds-DLps-DL that detects latch/unlatch of d-Dp/Drl/Dr2
rsl/DLrs2, and an unlock detection switch Ads-Aps that detects locking/unlocking of a key cylinder Ad-Ap provided on the driver's seat/passenger seat door and locking/unlocking the door lock device Dd-Dp. ,
Furthermore, there is a key detection switch IG that detects whether a key is inserted into the ignition key switch l (see Figure 3) installed in the vehicle interior, and a series of these switches and input ports PII to PI9 to generate electricity. It consists of an electronic control unit ECU that is connected to the

Furthermore, this electronic control unit (ECU) includes a starter relay 11 which is a normally open type relay that electrically connects the engine starter 16 and battery B, a horn H, a headlamp 14/tail lamp 13, and a hood which will be described later. The opening/closing device C (see Fig. 2) is connected to the output boats PO1 to PO4, respectively.
and are connected.

Note that the electronic control unit (ECU) is composed of a microcomputer.

Next, door lock devices Dd/Dp-Dr- are used for detecting vehicle status and monitoring vehicle theft.
This door lock device Dd will be explained using the one installed on the driver's door as a representative example.This door lock device Dd is locked and unlocked both inside and outside the vehicle, and is automatically locked when the vehicle exceeds a predetermined speed. Ru. In addition, in the unlocked state, the door is opened by an unlatch operation inside or outside the vehicle interior. Additionally, the door automatically latches when closed.

If the door is in the locked state when it is closed, it automatically returns to the unlocked state. However, if you close the door while operating the outside handle, the door will remain locked (keyless locking mechanism).

Specifically, as shown in FIG. 13, the door lock device Dd is connected to the key cylinder Ad via a rond, and also has an outside handle 46 connected to the door lock body DLd via each rond. ．． Inside handle 47. Door lock knob 48. and a solenoid actuator Dsd.

The door lock body DLd has, on one side thereof, a latch 4 and a pawl 5, which are pivotally connected to a base 54, respectively, as shown in FIG. When the door is closed, the latch 4 is rotated by a striker (not shown) that enters the engagement groove of the latch 4, moves from the unlatched position shown by the two-dot chain line, and engages with the pawl 5 to the latched position shown by the broken line. It is maintained by being This will close the door.

Moreover, on the other side of the door lock body DLd, the 14th
As shown in the figure, an intermediate link 49, an open lever 51, a key lever 53, and a locking lever 52 are each pivotally connected to a base 54.

The open lever 51 is coaxially connected to the pawl 5 and interlocks therewith. Further, the key lever 53 and the locking lever 52 are independently rotatable around the same axis.

The outside handle 46 is directly connected to the open link 50, and the inside handle 47 is connected to the open link 50 via an intermediate lever 55 and an intermediate link 49, respectively. On the other hand, the key cylinder Ad is connected to the key lever 53, and the door lock knob 48 and the solenoid actuator Dsd are connected to the locking lever 52, respectively. A contact mechanism is formed between the key lever 53 and the locking lever 52, and the key cylinder A
The locking lever 52 is also operated by d.

The open link 50 and the locking lever 52 are connected via a long length, and when the locking lever 52 is operated to lock, it changes from the locked state shown in the figure (when the open link 50 moves downward at part P, it can come into contact with the open lever 51). It is in an unlocked state (even if the open link 50 moves downward at the portion P, it cannot come into contact with the open lever 51). In this locked state, the open link 50 and the open lever 52 face each other at the portion Q, so when the open lever 51 operates due to the swinging of the pole 5 as the door closes, it comes into contact with the open link 50 and moves the open link 50 as shown in the figure. It is designed to return to the unlocked state. However, if the door is closed while the outside handle 46 is operated and the oven link 50 is moved downward, even if the open lever 51 operates, it will not come into contact with the oven link 50 and the door will remain locked (keyless lock mechanism ).

In the illustrated unlocked state, when the outside handle 46 and the inside handle 47 are operated, the oven link 50
can be moved downward to unlatch the open lever 51, that is, the pawl 5. However, in the locked state, even if the open link 50 moves downward, it does not come into contact with the oven lever 51, so the pole 5 does not operate in any way, and the latched state is maintained.

For locking/unlocking, use key cylinder Ad/door lock knob 48
- Set by solenoid actuator Dsd.

The key cylinder Ad is operated by rotation of the key insertion, the door lock knob 48 is operated by rotation of the key, and the solenoid actuator Dsd is operated by a control device (not shown) when the vehicle reaches a predetermined speed.

Furthermore, as shown in FIG. 6, the door lock body DLd
A latch detection switch DLds is attached to the. Then, the switch knob 8 is engaged when the protrusion 4aA formed on the outer periphery of the latch 4 is in the latched state, and the door latch detection switch DLdS is opened and closed.

As shown in FIGS. 4 and 5, the solenoid actuator Dsd reversibly moves the rod 1 between the lock position and the unlock position by energizing the solenoid in a predetermined direction. After this movement, it maintains its position even if the energization is stopped (self-holding type). A door lock detection switch DSds consisting of a fixed electrode piece 2 and a movable electrode piece 3 is disposed within such a solenoid actuator Dsd. Then, when the rod 1 moves to the unlock position, the movable electrode piece 3 is pressed against the fixed electrode piece 2, and both pieces 2
・3 becomes conductive.

It is also used as a means to release the anti-theft device.
As shown in FIGS. 7, 8, and 9, the key cylinder Ad consists of a housing 24, a lock 25 disposed inside the housing 24, and a lever 20 attached to the tip of the lock 25. . Then, the lock 25 is rotated by the key 29, and the lever 20 connected to the door lock knob DLd is rotated. A fixed holder 28 fixed to the housing 24 is provided at the back of the key cylinder Ad.
Movable holder 2 rotatably disposed within housing 24
7, a pair of fixed electrode pieces 30 and 32 attached to the fixed holder 28, and a movable electrode piece 31 attached to the movable holder 27.
is located.

The movable holder 27 is locked to the lock 25 and rotates in conjunction with the lock 25. When the key cylinder Ad is unlocked, the movable electrode piece 31 conducts between the double-sided constant electrode pieces 30 and 32.

The door lock device Dd is configured as described above, and the door lock device Dp on the passenger seat side is configured in the same manner. Further, the door lock devices Drl and Dr2 on the rear seat side differ only in that they do not have a key cylinder Ad and cannot be unlocked outside the city.

Along with the door lock device Dd-Dr2, the ignition key I serves as a vehicle state detection and vehicle theft monitoring means.
The key insertion detection switch IG is used.

Next, each mechanism that operates to prevent theft will be explained.

As shown in FIGS. 10 and 11, the engine hood opening/closing device C includes a base 36 attached to the vehicle body, a latch 37 pivotally attached to the base 36 through a shaft 37a,
It has a pawl 38 pivoted about a shaft 38a, and a spring 39 stretched between the latch 37 and the base 36. The pawl 38 and the latch 37 engage as shown in FIG. 10 to hold the striker 3 attached to the hood. A spring 42 is disposed between the pawl 38 and the base 36, and the pawl 38 is latched. 37 in the direction of engagement.

A solenoid actuator 17 is attached to the base 36, and the output shaft of the actuator 17 can freely protrude. A pin 17a is attached to this output shaft, and this pin 17a is loosely fitted into an elongated hole 38b of the pole 38 (see FIG. 11). And actuator 17
When the solenoid is energized, the output shaft protrudes. As a result, from the engagement position (solid line) shown in FIG.
The pole 38 is in the disengaged position (double-dashed line) shown in the figure.
rotates. When the power to the solenoid is cut off, the output shaft returns to its original position (
Return to Figure 10).

The solenoid of the actuator 17 is connected to the battery B via the normally closed switch section of the relay 15 and an operation switch 56 (normally open type) disposed in the vehicle interior. relay 15
One end of the solenoid is connected to battery B, and the other end is connected to boat PO4 of the anti-theft electronic control unit (ECU).

The boats POI to PO4 each constitute a switch mechanism that controls connection to the ground, with the boat Pot functioning as a normally closed switch and the other boats PO2 to PO4 functioning as normally open switches. Therefore, the actuator 17 normally stops;
When the boat PO4 is turned ON (theft prevention mode), the relay 15 is opened. Thereby, even if the operation switch 56 is operated inside the vehicle, the actuator 17 of the hood opening/closing device C will not be operated.

Starter relay 11, which is a normally open relay that electrically connects engine starter 16 and battery B, constitutes a starter included mechanism. One end of the solenoid coil of the relay 11 is the ignition key! The starter switch 12 is connected to the battery B via a normally open starter switch 12 that is closed by rotating a key 29 inserted into the starter switch 12 . Further, the other end of the solenoid coil is connected to the electronic control unit ECU through a boat POI.

Since the POI constitutes a normally closed switch mechanism, when the starter switch 12 is closed, the starter relay 11 is activated and the starter 16 is normally driven. but,
When boat PO1 turns OFF (anti-theft mode),
Even if the starter switch 12 is closed, the relay 11
will not operate and the engine will not start.

Horn H1, tail lamp 13 and head lamp 14 are also connected to battery B, and boat PO2 and PO
3 and are respectively connected to the electronic control unit 1-ECU.

The horn H, tail lamp 13, and head lamp 14 are wired so that they can be operated independently using a manual switch (not shown).

Since the boats PO2 and PO3 are configured as normally open switches, the horn H, tail lamp 13, and head lamp 14 do not normally operate. However, boat PO2・P
When O3 is turned ON (anti-theft mode), the horn sounds and the tail lamp 13 and head lamp 14 light up.

Next, the operation of the electronic control unit ECU is
This will be explained with reference to the flowchart shown in FIG. 12b.

The flowchart of the electronic control unit ECU consists of the following configuration.

(1) Standby mode: Perform initial settings when started. First, reset the system (set the theft prevention flag to 0FF). Then, the operating state of the key insertion detection switch IG of the ignition key switch I is referred to. If the key 29 is inserted into the ignition key switch (3) and the key insertion detection switch IC is OFF (YES), the vehicle is in a driving state, so the operating state of the key insertion detection switch IG is repeatedly referred to.

(2) System set mode: When the key detection switch IC is turned on (No), the vehicle is not in a driving state, so it is determined whether or not to operate the anti-theft system. In this embodiment, the determination criterion for the system set is whether or not the door of the vehicle is closed by a keyless lock operation of the door lock device Dd-Dr2. That is,
Door latch detection switch DLds-DLps-DLrsl detects whether doors other than the driver's seat (D seat) are closed.
- Judgment is made based on the detection signal from DLrs2, and the detection switch DSd determines whether all the doors are locked.
Judgment is made based on the detection signal from s-DSps-DSrs 1-DSrs2.

When each door other than the driver's seat is closed and all door locks are locked (YES), if the driver's door is closed while the door locks related to the driver's seat remain locked (YF). , S), Set the system (turn on the anti-theft flag) (keyless lock operation on the driver's door side). When each door other than the driver's seat is closed and all the doors are not locked (NO), it is similarly determined whether a keyless lock operation has been performed on the passenger seat (P seat) door. When a keyless lock operation is performed, the system is set (the theft prevention flag is turned ON).

If neither the driver's nor passenger's door is activated by keyless lock, the vehicle is not in operation but there are still passengers inside the vehicle, so check whether the keyless lock has been activated repeatedly (including in standby mode). Continue monitoring.

Note that even when the vehicle is locked using the key cylinders Ad and Ap without keyless lock operation, the electronic control unit ECU continues to monitor whether keyless lock operation has been performed, and the system is not set even when there is no passenger.

(3) Theft monitoring mode: Unauthorized intrusion into the vehicle interior is detected using the door lock body DLd-DL.
In either step r2, the locking lever 52 is moved to the unlocked position, and then the unlocked door lock body is unlatched with the outside handle to open the door. Normally, this unauthorized unlocking involves catching a tool on the key link 53 connected to the key cylinder Ad-Ap and moving the locking lever 52 to the unlocked position. As a result, the rods of the actuators DSd-DSr2 connected to the locking lever 52 are mechanically moved to the unlock position. That is, the door lock detection switch DSdsxDSrs2 is opened and closed. However, in the key cylinder Ad-Ap connected via the rod, mechanical motion is not transmitted because the rod is curved. The unlock detection switch Ads-Aps maintains the locked state.

However, when the door lock device is properly unlocked by the key 29 via the key cylinder, the unlock detection switch Ads-ApS and the door lock detection switch DSd are activated.
All s-DSps open and close. The theft monitoring mode is configured by paying attention to the difference in opening and closing operations of the unlock detection switch AdS-ApS and the door lock detection switch DSdsxDSrs2 between unauthorized door unlocking and normal door unlocking.

First, the unlock detection switch Ads-Aps is turned on (
Unlocking via key cylinder Ad-Ap with key 29)
Decide whether you did it. Regular unlocking with key 29 (YES)
If so, the process returns to the beginning of the flowchart, and the system is reset (the anti-theft flag is set to 0FF) to enter the L standby mode.

Even though the unlock detection switch AdS-Aps is 0FF (unlocked by the key 29/No), the door lock detection switches DSds□ to DSrS2 attached to the actuators DSd-[)Sr2 are not opened or closed. When the door latch detection switches DLds=DLrs2 are attached to the door lock bodies DLd-DLr2, respectively.
When the door is opened or closed, the door lock device determines that the door has been illegally unlocked and the door has been opened and theft prevention operation is performed.

If there is no unauthorized unlocking or proper unlocking, theft monitoring will continue.

(4) Anti-theft mode: First, turn off the port Pot. This prevents the starter relay 11 from turning on even if the starter switch 12 is short-circuited. In other words, the engine will not be started (starter interconnected setting).

Next, the hood opening/closing bag C is controlled. In other words, boat P
Turn on O4 and energize the solenoid of relay 15,
Open the switch section of relay 15. As a result, even if the operation switch 56 disposed inside the vehicle is operated, the actuator 17 is not operated and the hood is not opened (locked state setting of the hood opening/closing device C). Battery B expropriated in the engine room and the wiring between battery B and the electronic control unit ECU can be protected.

Furthermore, start a timer for 3 minutes. Port PO2 is turned ON and horn H is activated to emit an alarm sound. Further, the port PO3 is repeatedly turned ON and OFF, and the headlamp 14 and tail lamp 13 are blinked. This auditory
The visual alarm will continue until the 3 minute timer counts up.

If the anti-theft status continues even after the 3-minute timer counts up, ports P02 and PO3 are turned off, and the horn H, headlamp 14, and tail lamp 13 are turned off.
stop working. However, since the starter intertwined function and the hood-unopenable state continue, at least the theft of the vehicle itself can be prevented.

Furthermore, even if the system is set by mistake, the warning sound and lighting of the lamp will be completed after 3 minutes, so the surrounding environment will not be disturbed.

(5) First and second system release modes: When the unlock detection switch Ads-Aps is ONL (YES) while the 3-minute timer is operating, the theft condition is eliminated and the door is properly locked using the key 29. Suppose that it is now possible to unlock the
Cancel the anti-theft operation. That is, port PO2
Turn PO3 off and stop the alarm sound and lamp lighting.

The port PO4 is turned OFF and the relay 15 is connected (the hood opening/closing device C is unlocked).

Furthermore, the port POI is turned on and the starter interconnect is released. Then, the process returns to the beginning of the flowchart, resets the system, and enters standby mode.

Also, when the unlock detection switch Ads-Aps is turned on after the 3-minute timer has counted up (YES
), the starter interlock is released and the hood lock state is released, the system returns to the beginning of the flowchart, the system is reset, and the system enters standby mode.

In this way, in this anti-theft device, when the electronic control unit ECU enters the anti-theft mode, the hood opening/closing device C
Since the locked state is set in the engine room, battery B and its wiring arranged in the engine compartment are protected. Therefore,
It is possible to cut off the electronic control unit ECU from the power supply and prevent the system from going down.

Further, when the system release mode is entered, the hood opening/closing device C is automatically unlocked, so that the hood can be opened and closed smoothly using the operating switch 56 in the vehicle interior as before.

As a modified embodiment of the hood opening/closing device C', a motor 117 may be used as shown in FIGS. 15 and 16. When the switch 56 inside the vehicle is operated, the motor 117 rotates and the nut 112 screwed onto the output shaft 117a slides. Then, the upper end of the nut 112 comes into contact with the contact surface 138b of the pole 138, and the pole 138
is rotated around the shaft 138a. As a result, Paul 1
38 and the latch 137 are released, and the latch 137
moves from the latched position shown in FIG. 15 to the unlatched position shown in FIG. The hood is opened.

When the switch 137 moves to the unlatched position, the contact surface 137b of the latch 137 contacts the contact piece 111a of the limit switch 111. The limit switch 111 is opened and closed. In response to this, the electronic control unit ECU changes the direction of energization to the motor 111 and energizes the motor 111 for a predetermined period of time. Nut 112 moves back to its original position, ready for closing the hood.

[Effects of the Invention] As detailed above, in the present invention, the locked state can be set to the engine hood opening/closing device simply by attaching an electric actuator to the conventional engine hood opening/closing device to open and close the hood. .

Therefore, there is an effect that the configuration is extremely simple.

[Brief explanation of the drawing]

FIG. 1 is a system diagram showing an outline of the device of the present invention, FIG. 2 is a perspective view showing the exterior of the vehicle, and FIG. 3 is a perspective view showing the interior of the vehicle.
Figure 4 is a plan view showing the solenoid actuator DSd, Figure 5 is a schematic diagram showing the door lock detection switch DSds, Figure 6 is a front view showing the latch mechanism of the door lock body DLd, and Figure 7 is the key cylinder. A side view showing Ad, FIG. 8 is a sectional view showing a cross section along the line ■-■ in FIG. 7, and FIG.
The figure is an exploded perspective view showing the unrotator detection switch Ads.
Fig. 10 is a plan view showing the latched state of the hood opening/closing device C, Fig. 11 is an explanatory diagram showing the unlatched state of the hood opening/closing device C, and Figs. 12a and 12b are the anti-theft electronic control unit (ECU). Flowchart showing operation, 13th
14 is a rear view showing the locking mechanism of the door lock body DLd, and FIGS. 15 and 16 are plan views showing a modified embodiment of the engine hood opening/closing device. The explanatory diagram and FIG. 17 are plan views showing a conventional product. Ad-Ap...Key cylinder (vehicle state detection device), 71, ds-Ap3...Unrotator detection switch, B
...Battery, c, c' ...Engine hood opening/closing device, 15...
・Relay, 17.117...Actuator 56...Switch, Dd-Dp-Drl・Dp2...Door opening device, DLd...Door lock body, DLds-DLps-DLrs 1 ・DLrs2・・
・Door latch detection switch, DSd...Solenoid actuator, DSds-D
Sps-DSrs 1 ・DSrs2...Door lock detection switch, P...Lock mechanism part, Q...Keyless lock mechanism part, ECU...Theft prevention electronic control unit, PII~
PI9...Input boat, POI~PO4...Output boat, H...Horn, ! ...Ignition key switch, IG...Key insertion detection switch, 11...Starter relay, 13...Tail lamp, 14...Headlamp, 16...Starter,

Claims (1)

[Scope of Claims] A striker disposed on an engine hood that is attached to the vehicle body via a hinge mechanism so as to be openable and closable; a latch rotatably disposed on the vehicle body and capable of engaging the latch at a latching position of the latch and holding the latch at the latching position; and a pawl operatively connected to the pawl. an electric actuator that operates the pole to release the engagement with the latch; a switch disposed in the vehicle interior that instructs the electric actuator to be energized; and a vehicle status detector that detects the status of the vehicle. and an energizing means for energizing the electric actuator in response to an energizing instruction signal from the switch to enable opening of the engine hood when the vehicle is in a predetermined state.