JPH0579785B2 - - Google Patents

Description

[Detailed description of the invention]

(Industrial Application Field) The present invention relates to a door lock failure device for a vehicle anti-theft device. (Prior art and its problems) When leaving the vehicle, a reliable locking operation of the door, trunk, bonnet, etc. is detected and the alarm is set after a certain period of time. Various devices have been proposed that issue an alarm immediately when one of the opening/closing bodies is opened (Japanese Unexamined Patent Publication Nos. 60-50050 to 1983-50056). This type of alarm reset detects when the door lock rotates from the locked position to the unlocked position when the door is unlocked using a regular key, or when the door lock lever of the door lock mechanism swings in the unlocking direction. Generally, it is necessary to detect and reset the lock by operating the indoor lock knob due to the door glass being broken, or by inserting a wire etc. through the gap between the door glass and the door and directly swinging the lock/unlock lever of the door lock mechanism to unlock the door. They were defenseless against fraudulent methods. (Object of the invention) The present invention was made in view of the above circumstances, and
To provide a door lock failure device for a vehicle theft prevention device, which contributes to preventing theft due to key duplication, and which can cope with fraudulent acts such as unauthorized unlocking using a wire or the like, and contributes to preventing vehicle theft. purpose. (Means for Solving the Problems) In order to achieve the above object, the present invention provides a lock/unlock lever that swings in conjunction with the operation of a door cylinder lock outside the vehicle or a lock knob inside the vehicle to lock/unlock the door lock mechanism. is separated into a first locking lever that is linked to the operation of the door cylinder lock or lock knob, and a second locking lever that is linked to the locking/unlocking slider of the door locking mechanism,
Between these first and second locking levers, the first
The locking lever is configured to include a clutch means for coupling and releasing the coupling between the first locking lever and the second locking lever. (Operation) The first locking lever and the second locking lever are connected by the clutch means, and the second locking lever is activated by operating either the door cylinder lock or the locking knob linked to the first locking lever. The locking/unlocking slider linked to the king lever is movable to the unlocking position, the door locking mechanism is unlocked by operating the outer handle or the inner handle, and the first locking lever and the second locking lever are moved by the clutch means. The second locking lever is prevented from operating even if either the door cylinder lock or the lock knob is operated by releasing the connection with the door lock mechanism, thereby maintaining the door lock mechanism in a locked state. (Example) Hereinafter, an example of the present invention will be described based on the drawings. FIG. 1 shows the positional relationship between various switches and door cylinder locks of a vehicle, and FIG. 2 shows a block circuit of a vehicle anti-theft device. This vehicle anti-theft device is controlled by a control circuit 2 (including an input/output circuit, a power supply circuit, a discrimination circuit, etc.) operated by a battery 1. The input side of this control circuit 2 includes a key detection device 3 provided at two locations on the driver side door and the assist side door, a lock pin switch 4, an assist side silicone switch 5, a bonnet switch 6, an assist side door switch 7, Driver side door switch 8, trunk switch 9, trunk lock switch (trunk key cylinder rotation detection switch) 1
0 and a driver-side silicon switch 11 are connected, and the operating status of each of these switches is monitored by the control circuit 2. The lock pin switch 4 is turned off when the key 26 is removed from the steering lock.
When inserted and rotated, the lock pin is pulled up and turned on (ON). The assist side and driver side silicon switches 5 and 11 are turned OFF when the assist side door and driver side door are locked by operating the lock knob, and are unlocked (unlocked).
This is a switch that turns on. The bonnet switch 6 monitors the open/closed state of the bonnet, and is turned on when the bonnet is open and turned off when the bonnet is closed. The assist side and driver side door switches 7 and 8 are provided corresponding to the assist side and driver side doors, and are turned off when the door is closed and turned on when the door is opened. It's a switch. The trunk switch 9 monitors the open/closed state of the trunk, and is a switch that is turned off (OFF) when the trunk is closed and turned on (ON) when the trunk is opened. The trunk lock switch 10 is a switch that is turned on (ON) when the trunk key cylinder 19 is rotated to the unlocking angle, and turned off (OFF) at other times. Further, a horn 20 is provided on the output side of the control circuit 2.
A headlight 21, a turn signal 22, a starter cut relay 23, an actuator 24 for door lock failure, and a buzzer 25 are connected. The key detection device 3 is a device for extracting a password signal from a key 26 with a password. That is, as shown in FIG. 3, the key detection device 3 is provided with a case 28 having a U-shape in plan and disposed outside the door cylinder lock 27.
A yoke 29 having a U-shaped plan view is provided within the yoke 8 . A magnet 30 is provided inside one end of the yoke 29, and a Hall element 17, which is a magnetic detection element, is provided inside the other end of the yoke 29. Further, an amplifier circuit 32 incorporating the Hall element 31 is provided outside the other end of the yoke 29. As shown in FIG. 4, this amplifier circuit 32 is composed of a non-inverting amplifier circuit (voltage follower circuit) 33, a differential amplifier circuit 34, and a Hall element 17, and the non-inverting amplifier circuit 33 includes an operational amplifier IC1. A reference voltage set by resistors R1 and R2 is input to a second operational amplifier IC2, which will be described later. The differential amplifier circuit 34 is a second operational amplifier IC.
2 to amplify the output voltage of the Hall element 17 minus the reference voltage. The amplification factor is resistors R3, R4, R
5, determined by the resistance value of R6. The key 26 has a structure in which a magnetic body 36 is fixed to both sides of a non-magnetic key body 35, as shown in FIGS. It may also be embedded within the key body 35. Note that the number of magnetic bodies 36 is not limited to one, and the number of magnetic detection elements (Hall elements 17) provided in the key detection device 3 is also not limited to one. The key detection device 3 extracts a password from the key 26, and about 15 types of password can be obtained by changing the type, size, thickness, etc. of the magnetic material 36 and having different magnetic permeability. It is designed so that it can be used. That is, in the amplifier circuit shown in FIG.
Vcc = 10V (this 10V is supplied from control circuit 2 with +5V as a voltage doubler), second operational amplifier IC2
The maximum output voltage is 8.5V, the output of the Hall element 17 when the key 26 is not inserted into the door cylinder lock 27 is 1V, the reference voltage is 1V, and the amplification factor of the second operational amplifier IC2 is 50 times. Then, when the key 26 is not inserted into the door cylinder lock 27, the output voltage of the second operational amplifier IC2 is 0V, and when the key 26 is inserted into the door cylinder lock 27, the output voltage of the Hall element 17 is 1.1V. For example, the output voltage of the second operational amplifier IC2 is (1.1-1) x 50 = 5V. That is, if the magnetic permeability of the magnetic material 36 provided in the key 26 is changed, the output of the Hall element 17 will be changed, so that the output of the second operational amplifier IC2 will vary from 0 to 8.5V.
In order to obtain 15 types within the range of , it is sufficient to select a magnetic material 36 that changes the output of the Hall element 17 as follows.

[Table] Figs. 9 to 15 show a door lock failure device A in a door lock mechanism. The door lock failure device A includes a holding member 44 consisting of a back plate 41 and a cover 42. This holding member 44 has an actuator housing section 4.
4', a gear storage section 45, and a rack storage section 46 are formed, and a support shaft 47 is provided at the lower end of the holding member 44. The actuator housing 44' has a motor 48 which is the actuator 24 for locking the door.
is stored in a fixed state, and a cap 49 is fitted to the upper end of the cover 42 of the holding member 44, and a cord 50 connected to the connection terminals 48a, 48b of the motor 48 is connected to the guide of the cap 49. It is led out from the hole 51. A drive gear 53 is fixed to a rotating shaft 52 of the motor 48. A guide rack 54 is housed in the rack storage portion 46 so as to be movable up and down, and a guide stopper 5 is disposed on the opposite side of the guide rack 54 from the rack teeth 55.
6 is formed, and this guide stopper 56 is slidably inserted into a guide groove 57 formed in the cover 42. Further, the lower end edge 54a of the guide rack 54 is formed into a circular arc shape, and a cam mounting portion 58 is formed at the lower end portion of the guide rack 54, and the upper surface 58a of this cam mounting portion 58 is formed into a circular arc shape. Front surface 58 of cam mounting part 58
An arcuate pin insertion groove 59 is provided in b. A lock cam 60 is provided in the cam mounting portion 58. The upper and lower surfaces 60a of this lock cam 60,
Both end surfaces 60b and 60b of the lock cam 60 are tapered surfaces, and one end surface 60c has a notch 60e.
is formed. Further, a pin 61 is provided protruding from the front surface of the lock cam 60. The pin 61 is inserted into the pin insertion groove 59 and the upper surface 60a is brought into sliding contact with the upper surface 58a of the cam mounting section 58, so that the lock cam 60 is swingably mounted on the cam mounting section 58. Furthermore, notches 62a and 63a are formed in both side surfaces 62 and 63 of the cover 42 of the holding member 44. A first locking lever 38 and a second locking lever 39 are swingably attached to a support shaft 47 provided on the holding member 44 at respective boss portions 38a and 39a. The lock cam 60 is mounted above the boss portions 38a and 39a.
tapered cam insertion recesses 64, 65 into which the
is formed. The first locking lever 38 has first, second, and third lever portions 66b, 66c,
66d is provided. The first lever portion 66b is connected to the actuating portion of the door cylinder lock 27, the second lever portion 66c is connected to the actuating portion of the power lock actuator assembly 67, and the third lever portion 66d is connected to the actuating portion of the power lock actuator assembly 67. is linked to a lock knob (not shown) via a knob lever 68. The second locking lever 39 is linked to the locking/unlocking slider of the door locking mechanism. The above door lock mechanism operates as follows. (1) Door lock activated. A reverse rotation signal is input to the motor 48 from the control circuit 2 of the vehicle anti-theft device, and the motor 48 is driven to rotate in the reverse direction, causing the drive gear 53 to rotate. descends. For this purpose, a locking cam 60 connected to the guide rack 54 locks the first and second locking levers 3.
The first locking lever 38 and the second locking lever 39 are integrated by the locking cam 60 by being inserted and locked into the cam insertion recesses 64 and 65 of 8 and 39, respectively. Therefore, by operating either the door cylinder lock 27 linked to the first locking lever 38 or the locking knob, a locking/unlocking slider (not shown) linked to the second locking lever 39 is activated. It becomes possible to move to the unlocked position. For this purpose, when the release lever (not shown) is operated in the unlocking direction by operating the outer handle or the inner handle, the ratchet (not shown) swings and the rotary latch (not shown) rotates to release the lock. The lock is made. (2) Door lock is not locked. The first and second locking levers 38 and 39 are
The motor 4 is connected from the control circuit 2 of the vehicle anti-theft device in an integrated state by the lock cam 60 inserted and locked in these cam insertion recesses 64 and 65.
When a forward rotation signal is input to motor 8, this motor 48
is driven to rotate in the forward direction, and the drive gear 53 and the rack tooth portion 5
5, the guide rack 54 rises, and the side end surface 60d of the lock cam 60 and the notch 60e come into sliding contact with the inner surfaces of both side surfaces 62, 63 of the cover 42,
Further, a portion of the lock cam 60 on the side end surface 60c side fits into the notch 62a of the cover 42. For this reason, the locking cam 60 is removed from the cam insertion recesses 64 and 65, and the connection between the first locking lever 38 and the second locking lever 39 by the locking cam 60 is released. Therefore, even if either the door cylinder lock 27 or the locking knob is operated, only the first locking lever 38 rotates and the second locking lever 39 does not rotate. The lock/unlock slider linked to cannot be moved to the unlock position. Therefore, even if the outer handle or the inner handle is operated, the release lever does not operate in the unlocking direction and the door lock remains locked. Next, the operation of the door lock failure device of the vehicle theft prevention device according to the present invention will be explained with reference to the theft alarm operation flowchart of FIG. (1) Transition from alarm set release state to alarm set state. The alarm is set only when the driver side door and assist side door are locked using the lock knob (keyless lock). That is, when the vehicle anti-theft device is in the start state (step 100) to the alarm set release state (step 101), the key 26 is pressed from the key switch.
When the lock pin is removed (step 102), the lock pin of the steering lock protrudes, and the lock pin switch 4, which detects the protrusion of the lock pin, is turned off. There are two types of operation states in which an alarm is set from such a state. The first is a so-called keyless operation in which the assist side door is locked with the lock knob (step 103) and the driver side door is locked without using the key 26. Lock (Push in the lock knob when the door is open, and close the door while pulling the handle to lock it)
(steps 104 and 105), and the trunk and bonnet are closed (steps 104 and 105).
106), the switch conditions are: lock pin switch 4 is off, assist side silicone switch 5 is off, assist side door switch 7 is off, driver side silicone switch 11 is on → off, driver side door switch 8 is off. On→off state, bonnet switch 6, trunk switch 9
and the trunk lock switch 10 are all turned off, a command signal from the control circuit 2 is input to the buzzer 25, and the buzzer 25 sounds for 3 seconds to notify that the alarm has been set (step 107). At the same time, a command signal is input to the door lock failure actuator 24 of the door lock mechanism, and the first
Even if the second locking levers 38 and 39 are disengaged (door lock set) and either the door cylinder lock 27 or the lock knob is operated, the door lock mechanism remains locked (step 108). . The second operating state in which the alarm is set is the state in which the key 26 is removed from the key switch (step
102), the driver side door is locked with the lock knob (step 109), the assist side door is keylessly locked (steps 110, 111), and the trunk and bonnet are closed from the open position (step 112) (step 109). 113), the switch conditions are: lock pin switch 4 is off, driver side silicon switch 11 is off, driver side door switch 8 is off, assist side silicon switch 5 is on → off, assist side door switch 7 is off. On→off state, the bonnet switch 6, trunk switch 9, and trunk lock switch 10 are all turned off, a command signal from the control circuit 2 is input to the buzzer 25, and the buzzer 25 is turned off.
The alarm is sounded for a second to notify that the alarm has been set (step 107), and the process proceeds to step 108 described above. The reason why the alarm setting is limited to the keyless lock (steps 105 and 111) as described above is to prevent forgetting to set the alarm. (2) Prevents forgetting to set alarms. Remove key 26 from the key switch (step
102), when the driver side door or assist side door is locked using the key 26 (step 114,
115), upon detecting that the door has been locked without following the keyless lock procedure, the buzzer 25 immediately sounds five times intermittently (step 116) to notify that the alarm has not been set. The switch conditions in this case are that the lock pin switch 4 is off, the assist side door switch 7 is off, the assist side silicone switch 5 is off, the driver side door switch 8 is on → off, and the driver side silicone switch 11 is on. On →
In the off state, the bonnet switch 6, trunk switch 9 and trunk lock switch 10 are in the on or off state. However, if the bonnet switch 6, trunk switch 9, and trunk lock switch 10 are all off at this time, all parts are locked and it is possible to leave the vehicle without setting the alarm. Furthermore, if the door is closed without being locked during a car wash or the like, no notification or alarm will be activated because no locking operation has been performed. In addition, even if you get into the vehicle to drive, insert the key 26 into the key switch, and lock the door by operating the lock knob, or even if you do not lock the door, the steering lock is unlocked.
Since the lock pin is retracted and therefore the lock pin switch 4 is turned on, no notification or alarm activation is performed, nor is the alarm set. (3) Canceling the alarm set and unlocking using the key 26 with a regular code. In the alarm set state (step 117), when the key 26 with a regular password is used, the magnet 30, which is a magnetic flux generating means provided outside the door cylinder lock 27, generates a magnetic flux passing through the key hole 27a, and the key 26 is activated. The Hall element 17 detects the change in magnetic flux caused by the magnetic material 36 provided in the magnetic body 26, and the amplification circuit 32 amplifies and outputs it (Step 118). 119) At this time, the alarm set is canceled (step 120), and a command signal is input to the door lock actuator 24 of the door lock mechanism. For this purpose, the lock cam 60 is lowered in the missing mechanism A of the door lock mechanism, and the lock cam 60 is inserted into the cam insertion recesses 64 and 65.
The second locking levers 38 and 39 are connected to each other, and the door locking mechanism becomes unlockable (step 121). (4) Alarm activation due to unauthorized operation. In the alarm set state (step 117), when the bonnet is opened by unauthorized means, the bonnet switch 6 is turned on (step 122), and the alarm is activated by the command signal from the control circuit 2 (step 122). Step 123). This alarm is activated by the horn 20 sounding intermittently for 5 minutes, the headlight 21 and the turn signal 2.
2 flashes for 5 minutes, and the starter cut relay 23 is energized until the alarm set is canceled, so the engine will not start even if it is directly connected to the battery. Furthermore, when the trunk is forced open by unauthorized means and the trunk lock switch 10 is not turned on but the trunk switch 9 is turned on (step 124), an alarm is activated by a command signal from the control circuit 2. When the door glass is broken and the door is unlocked by operating the lock knob, that is, when the output voltage of the key detection device 3 is outside the preset voltage range (step 125), the driver side silicon switch 11 or the assist side silicon switch 11 is activated. When control switch 5 is turned on (step 126 or
127), an alarm is activated by a command signal from the control circuit 2. If the door is opened by breaking the door cylinder lock 27, that is, if the output voltage of the key detection device 3 is outside the preset voltage range (step
125), when the driver side door switch 8 or the assist side door switch 7 is turned on (step 128), an alarm is activated by a command signal from the control circuit 2. In addition, if the key body 35 is not equipped with a magnetic material 36 that emits an output voltage within a preset voltage range even if a key with the same key profile is obtained and illegally unlocked, the door cylinder lock 2
7 can rotate, but no command signal is sent from the control circuit 2 to the door locking actuator 24 of the door lock mechanism, and the lock cam 60 is in the upward movement position, and the first locking lever 38 and the second locking lever 38 It is separated from the lever 39 and does not unlock even if the outer handle or inner handle is operated. In addition, in the alarm set state (step 117), as a countermeasure against unauthorized unlocking using a key other than the authorized key, a signal outside the set voltage range of the output voltage of the key detection device 3 is input two or more times in a row. When this occurs, the key detecting device 3 is stopped for two minutes to prevent the alarm from being set easily (step 129). In addition, if the output of battery 1 is cut off and the power supply from battery 1 is cut off while the alarm is set, the door lock mechanism will remain in an idling state (door lock idling set state), and there is a risk that the door will not be unlocked. Therefore, an auxiliary power source is placed in the trunk or the like, and a coupler is connected to the control circuit 2 when the power supply is cut off, so that the control circuit 2 can be activated. (5) Stopping alarm activation To stop alarm activation, use a regular magnetic material 3.
6 is inserted into the key hole 27a of the door cylinder lock 27. When the regular key 26 is used, the magnet 30 provided on the outer periphery of the door cylinder lock 27 generates magnetic flux passing through the key hole 27a, and the change in magnetic flux caused by the magnetic material 36 provided in the key 26 is transferred to the Hall element. 17, amplified by the amplifier circuit 32 and output as a voltage (step 130), and if this output voltage is within a preset voltage range (step 130).
131) At this time, the alarm activation output is cut off (step 132), and at the same time, a command signal is input to the door lock failure actuator 24 of the door lock mechanism, and the door lock mechanism A becomes unlockable (step 121). . If a signal outside the set voltage range of the output voltage of the key detection device 3 is inputted two or more times in succession using an unauthorized key, the key detection device 3 will be stopped for two minutes to prevent the alarm from being easily released. (steps 134, 133). The above operating conditions and detection switch operations are shown in the table below.

[Table] (Effects of the Invention) As detailed above, the vehicle door lock device according to the present invention locks and unlocks the door lock mechanism by swinging in conjunction with the operation of the door cylinder lock outside the vehicle or the lock knob inside the vehicle. The locking/unlocking lever is separated into a first locking lever that is linked to the operation of the door cylinder lock or the locking knob, and a second locking lever that is linked to the locking/unlocking slider of the door locking mechanism, and these first, between the first locking lever and the second locking lever;
The present invention is characterized in that it is provided with a clutch means for coupling the locking lever with the locking lever and releasing the coupling. Therefore, the first locking lever and the second locking lever are coupled by the clutch means, and the second locking lever is coupled by the operation of either the door cylinder lock or the locking knob linked to the first locking lever. The locking/unlocking slider linked to the locking lever can be moved to the unlocking position, and the door locking mechanism can be unlocked by operating the outer handle or inner handle.
Even if the second locking lever is disconnected from the locking lever and either the door cylinder lock or the lock knob is operated, the second locking lever is prevented from operating, and the door lock mechanism can be kept in a locked state. Therefore, when an unauthorized key with the same profile as a legitimate key is used, the door cylinder lock rotates but the lock/unlock lever is disabled, thereby preventing theft due to key duplication. Further, it is possible to deal with fraudulent acts such as manipulating the indoor lock knob due to the door glass being broken, or inserting a wire or the like through the gap between the door glass and the door and directly swinging the lock/unlock lever of the door lock mechanism to unlock the door.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram showing the arrangement positions of various switches and cylinder locks in a vehicle, Fig. 2 is a block diagram of a vehicle anti-theft device, Fig. 3 is a partially sectional front view of a key detection device, and Fig. 4 is an explanatory diagram of the configuration of the amplifier circuit, Fig. 5 is a plan view of the key, and Fig. 6 is Fig. 5-
7 is a plan view showing another embodiment of the key; FIG. 8 is a sectional view taken along the line of FIG. 7; FIG. 9 is a front view showing an embodiment of the present invention;
FIG. 10 is a side view of the same, FIG. 11 is an explanatory diagram of the main part of the door lock failure device according to the present invention, and FIG.
The figure is a vertical sectional view of the same, Figure 13 is an exploded perspective view of the same, and Figure 1 is an exploded perspective view of the same.
4 is a view taken along the line in FIG. 11, FIG. 15 is a perspective view of the cover and lock cam, and FIG. 16 is a flowchart for operating the burglar alarm. 2...Control circuit, 3...Key detection device, 24...
...Actuator for door lock failure, 27...
Door cylinder lock, 38...first locking lever, 39...second locking lever.

Claims (1)

[Scope of Claims] 1. A locking/unlocking lever that swings in conjunction with the operation of a door cylinder lock outside the vehicle or a lock knob inside the vehicle and locks/unlocks the door lock mechanism is connected to a first locking/unlocking lever that is coupled to the operation of the door cylinder lock or lock knob inside the vehicle. The locking lever is separated into a second locking lever linked to the locking/unlocking slider of the door locking mechanism, and the first locking lever and the second locking lever are separated between the first and second locking levers. 1. A door lock failure device for a vehicle anti-theft device, characterized in that a clutch means is provided for coupling with a locking lever and releasing the coupling. 2. The clutch means is moved via a door lock missing actuator operated by a forward and reverse rotational signal inputted by a control circuit, and a converting means that converts the rotational motion of the door lock missing actuator into linear motion. 1. A door lock failure device for a vehicle anti-theft device as set forth in claim 1, comprising a lock cam that is removably inserted into a cam insertion recess of a second locking lever.