JP2883105B2 - Door lock device for automobile - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile door lock device that can prevent unauthorized unlocking of a locked automobile door.

4 Conventionally, a burglary has occurred in which a locked automobile door is illegally unlocked with a special tool and enters a vehicle. For example, as shown in FIG. 7, the slim gym 5 formed in a thin plate-like rod is inserted into the door 1, and the tip of the slim gym 5 is engaged with the relay rod 15. Thereafter, when the slim gym 5 is pulled upward, the door 1 is unlocked. In order to prevent theft by such unauthorized means, a structure is known in which a protection plate (not shown) for preventing insertion of a tool is fixed in a door panel. However, in the structure in which the protection plate is provided, a large protection plate for completely preventing the slim gym 5 from entering must be provided in the door 1, but in practice, a large protection plate is provided in the small space door for storing the window glass. It is difficult to fix.

On the other hand, for example, JP-A-56-478 and JP-A-57-6
No. 1166 discloses a central control locking device for a motor vehicle. The centralized control lock device for a vehicle operates the door lock device by operating actuators provided on a plurality of doors or trunks of the vehicle. The operation of the actuator is prevented by a deadlock signal generated when the door is locked, and the operation of a lock knob mechanically linked to the actuator is prevented. As a result, the lock knob cannot be operated even if the lock knob is illegally operated with a special tool.

However, in the vehicle central control lock device disclosed in the above publication, an actuator for operating the door lock device must be provided for each door. Since the actuator for operating the door lock device has a very complicated structure including electric components, it is costly to install such an actuator on each door. That is, in the automotive central control lock device disclosed in the above publication, the opening / closing device and the adjusting drive device are operated between three positions: an open position, a clamp position, and an anti-theft position. Therefore, not only a large number of parts are required, but also the operation mode is complicated and the frequency of failure is high.

Japanese Utility Model Publication No. Sho 62-20618 discloses a door lock device for an automobile which prevents the operation of a lock knob when locked by operating a key. In this vehicle door lock device, a first locking lever operated to a locking position or an unlocking position by a knob lever, and a second locking lever operating the knob lever to a locking position or an unlocking position via an engagement pin by a cylinder lock. Are provided. In the locked position, the second locking lever moves the engagement pin from the non-restricted portion to the restricted portion to restrict the movement of the knob lever. But,
In this device, if a slim gym is used, the second locking lever can be operated to the unlocked position without using a key, so that the antitheft effect is low.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an automobile door lock device which is difficult to unlock by a tool and can be manufactured at low cost.

Means for Solving the Problems A door lock device for an automobile according to the present invention comprises a lock position, an unlock position, and a neutral position provided between the lock position and the unlock position by inserting a regular key and rotating the key. A cylinder lock (11) having a lever (11a) rotated between the cylinder lock and a vehicle door (1)
A lock switch (23) for detecting that the lever (11a) of the cylinder lock (11) is rotated to the lock position, and a door switch (42) for detecting the open / close state of each of the plurality of doors (1). A door lock switch (45) for detecting a locked state of each of the plurality of doors (1), and a lock device body (10) operatively connected to a door handle and a cylinder lock (11) for locking and unlocking the door (1). And The locking device body (10) includes a swing lever (13) for controlling the detent member (18). The lever (11a) of the cylinder lock (11) is connected to the long hole (13b) of the swing lever (13) with a gap by the operating rod (12). The vehicle door lock device further includes a solenoid (31) having a plunger (30) removably provided on a swing lever (13) of a lock device body (10), a door switch (42) and a door lock. A solenoid control device (40) that receives an output from the switch (45) and controls the solenoid (31). When all the doors (1) are closed and locked, the lock switch (23) is kept on for a certain period of time, or when the lock switch (23) is turned on a plurality of times within a certain period of time. The solenoid control device (40) operates the solenoid (31) to enter a deadlock state in which the movement of the swing lever (13) is prevented. Thereafter, the lever (11a) can be rotated to the neutral position by the gap provided in the long hole (13b) of the swing lever (13). The deadlock state is released by the signal of the lock switch (23) generated when the lever (11a) is rotated from the neutral position to the lock position or from the lock position to the neutral position.

As used herein, the term "operating mechanism of the locking device body" means only a locking device having an operating mechanism that is manually operated, and includes a locking device having an electromagnetic or other operating mechanism that is automatically operated by an actuator. Make it not exist.

In the embodiment of the present invention, a display device (55) is connected to the solenoid control device (40), and the display device (55) is activated when a deadlock occurs. In another embodiment of the present invention, the cylinder lock (1
When a proper key is inserted in 1), a deadlock state of the solenoid (31) is released by a signal of a sidebar switch (163) provided in the cylinder lock (11).

When all doors (1) are closed and locked,
Insert the regular key into the cylinder lock (11)
a) is rotated to the lock position, and the lock switch (23) is held in the ON state for a predetermined time or the lock switch (2
When 3) is turned on a plurality of times within a predetermined time, the solenoid control device (40) operates the solenoid (31) to lock the plunger (30) with the swing lever (13), and the swing lever (13). 13) A deadlock condition is made to prevent the movement.
Therefore, even if a tool is used, the lock device main body (10) cannot be unlocked illegally. The swing lever (13) in the deadlock state is fixed by the plunger (30), but the lever (11a) is rotated to the neutral position by the gap provided in the long hole (13b) of the swing lever (13). be able to. If the display device (55) is connected to the solenoid control device (40), the display device (55) is activated when the swing lever (13) is in the blocking state, so that the operator is deadlocked. The key can be extracted after the state is recognized. Then, in the deadlock state, the lever (11
Lock switch (2) that is generated when a) is rotated from the neutral position to the lock position or from the lock position to the neutral position.
When the signal of 3) or a proper key is inserted into the cylinder lock (11), the deadlock state of the solenoid (31) is released by the signal of the side bar switch (163) provided on the cylinder lock (11).

Embodiment An embodiment of a vehicle door lock device according to the present invention will be described below with reference to FIGS. 1 to 19.

FIG. 1 is a front view of the lock device main body 10. FIG. The door 1 composed of the outer panel 2 and the inner panel 3 has a seventh
As shown in the figure, the window glass 4 is attached by a known method. A cylinder lock 11 is attached to the outer panel 2, and the lock device main body 10 can be locked or unlocked by operating the cylinder lock 11 with a proper key. That is, when the key is rotated in the lock direction, the lock device main body is rotated.
10 operates in the locked state. At this time, the knob 22 is simultaneously moved downward in FIG. In the locked state, the door 1 cannot be opened even if an outdoor handle or an inside door handle (not shown) attached to the door 1 is operated. When the key is rotated in the unlock direction, the lock device main body 10 operates in the unlock state. At this time, the knob 22 is simultaneously moved upward in FIG. In the unlocked state, the door 1 can be opened by operating an outdoor handle or an inside door handle attached to the door 1.

As shown in FIG. 2, the cylinder lock 11 is
A hole 11b formed in the lever 11a, a magnet 7 fixed to the lever 11a, a clip 8 for fixing the cylinder lock 11 to the outer panel 2, and a lock switch attached to the clip 8 and constituted by a reed switch. 23. The lever 11a is attached to an inner end of a key cylinder (not shown) rotatably provided inside the cylinder lock 11. The lock switch 23 is moved from the neutral position shown in FIG.
When the magnet 7 rotates downward in the counterclockwise direction, it is turned on by the approach of the magnet 7.

As shown in FIG. 7, a door lock device for a vehicle according to the present invention includes a lock device main body 10, a cylinder lock 11 connected to a swing lever 13 of the lock device main body 10, and a manual operation member 20 including a knob 22. It is constituted by and.

As shown in FIG. 1, the swing lever of the lock device body 10
13 is connected to the lower end portion 12b of the operating rod 12,
2, the upper end 12a is connected to a hole 11b formed in the lever 11a of the cylinder lock 11, as shown in FIG. When the cylinder lock 11 is rotated by a key in the locking direction or the unlocking direction, the rotational movement of the lever 11a is converted into a vertical linear movement of the operating rod 12. As shown in FIG.
A lower end portion 12b of the operating rod 12 is engaged with a long hole 13b formed as a curved groove at one end of a swing lever 13 swinging around a shaft 13a, and the swing lever 13 is rotatably mounted on the shaft 13a. Since the operation lever 12 is worn, the swing lever 13 performs a swing movement by the linear movement of the operation rod 12. Since the other end 13c of the swing lever 13 is connected to the relay rod 15 via another swing lever 14 (FIG. 9), the linear movement of the operating rod 12 is controlled via the swing levers 13, 14. This is converted into a linear motion of the relay rod 15.

A known ball (not shown) is provided on the shaft 18c of the detent member 18. The ball holds a latch engaged with a striker fixed to the vehicle body in a position where the ball is engaged with the striker, as is apparent from a conventional door lock device. When the detent member 18 is rotated, the hook-shaped latch rotates between a position where the detent member 18 is locked with the striker and a position where the lock is released with the striker. Locking part provided at the upper end of switching arm 17
17c is engaged with a hole 19d formed in the handle lever 19. An outdoor handle (not shown) is operatively connected to one end 19b of the handle lever 19, and the other end of the handle lever 19 is provided.
An inside door handle (not shown) is operatively connected to 19c.

As shown in FIG. 1, the connecting pin 16 protruding from the vicinity of the shaft 13a of the swing lever 13 is fitted into the curved groove 17a of the switching arm 17. When the operating rod 12 is moved upward by the cylinder lock 11, the connecting pin 16 is moved upward, and the switching arm is moved.
17 rotates clockwise around the locking portion 17c. Therefore, when the switching arm 17 is moved downward, the switching arm
The claw-shaped engagement portion 17b provided on the detent member 18
With the claw 18a. Conversely, when the operating rod 12 is moved downward by the cylinder lock 11, the connecting pin 16 moves downward, and the switching arm 17 rotates counterclockwise about the locking portion 17c. Therefore, when the switching arm 17 is moved downward, the claw-shaped engaging portion 17b of the switching arm 17 does not abut on the claw 18a of the detent member 18.

The detent member 18 is rotatably supported on the frame 6 of the lock device main body 10 by a shaft 18c. When the cylinder lock 11 is unlocked by the key, the operation rod 12 is raised, and the claw-shaped engaging portion 17b provided on the switching arm 17 is
To the unlock position where it can be engaged with the claw 18a. However, when the cylinder lock 1 is locked by the key, the operating rod 12 is lowered, and the engaging portion 17b of the switching arm 17 is separated from the claw 18a of the detent member 18 and moves to a locking position where it cannot be engaged. When the outdoor handle or the inside door handle is manually operated in the opening direction of the door 1, the handle lever 19 is moved to the first position.
In the figure, the arm is rotated clockwise about the axis 19a, so that the switching arm 17 is moved downward.

When the door 1 of the vehicle is closed, the latch is engaged with the striker on the vehicle body side and is in the locked position. When the lock device body 10 is unlocked, the engagement portion of the switching arm 17 is
17b moves to the unlocked position where it can be engaged with the claw 18a of the detent member 18. When the outdoor handle or the inside door handle of the automobile is operated in this state, the handle lever 19 rotates clockwise, and the switching arm 17 moves down.
For this reason, the engagement portion 17b of the switching arm 17 and the detent member 1
The eight claws 18a are engaged, and the detent member 18 is rotated clockwise. Therefore, the ball is disengaged from the latch, disengaging the latch from the striker, and the door 1 can be opened.

Conversely, when the door 1 of the vehicle is closed, the locking device body 10 is closed.
Is in the locked state, the engaging portion 17b of the switching arm 17 moves to the locked position where it cannot be engaged with the claw 18a of the detent member 18.
When the outdoor handle or the inside door handle of the automobile is operated in this state, the handle lever 19 rotates clockwise, and the switching arm 17 moves down. However, since the engaging portion 17b of the switching arm 17 does not contact the claw 18a of the detent member 18, the detent member 18 cannot be rotated,
The latch and striker are held in engagement and the door 1 cannot be opened.

As shown in FIGS. 1 and 3, a bidirectional stable solenoid 31 having a plunger 30 is fixed to the frame 6. Solenoid 31 and solenoid control circuit 40 (FIGS.
FIG. 6) constitutes a deadlock device. Plunger 30
Is arranged to face a hole 13d formed in a swing lever 13 as one of the operating mechanisms of the lock device body 10. When the solenoid 31 is energized and the plunger 30 projects to the operation inhibiting position, the plunger 30 enters the hole 13d, and the rotation of the swing lever 13 is prevented by the plunger 30. When the solenoid 31 is biased in the reverse direction, the plunger 30 is retracted from the inside of the hole 13d to the operation allowable position, and the rotation of the swing lever 13 is allowed. Although not shown in detail, the bidirectional stable solenoid 31 has a pair of magnets disposed at both ends of the coil adjacent to the plunger 30. By changing the direction of the current flowing through the coil of the solenoid 31, an electromagnet of the same polarity or a different polarity with respect to the polarity of the magnet is formed on the plunger 30, and the plunger 30 is attracted to the other magnet from one side or to one magnet from the other side. Let it. Thereby, the plunger 30 can be moved to a position where the pin 36 protruding from the solenoid 31 cannot be unlocked or a position where the plunger 30 is retracted into the solenoid 31 and can be unlocked.

FIG. 4 shows a solenoid control circuit for driving the solenoid 31.
FIG. 5 is a flowchart showing the operation sequence of the solenoid control circuit 40.

As shown in FIG. 4, the solenoid control circuit 40 can be constituted by a one-chip microcomputer (CPU). Input terminal I ₁ of the solenoid control circuit 40 is connected to one end of each of a plurality of door switches 42 for detecting the opening and closing of the car door 1 through a diode 41 (42 a to 42 d). One end of the door switch 42 is connected to the battery via the room lamp 43.
Connected to 44. The other end of the door switch 42 is grounded.
Input terminal I ₂ of the solenoid control circuit 40 is connected to a plurality of door lock switch 45 for detecting the locking and unlocking of the door 1 (45a to 45d). Further, the input port I ₃ is connected to the lock switch 23. Although not shown in detail, the plurality of door lock switches 45 (45a to 45d)
Alternatively, it is provided in a door lock timer (not shown) interlocked with the lock device main body 10 and detects that the switching arm 17 of the lock device main body 10 is at the locked position.

The door switch 42, the door lock switch 45 and the lock switch 23 are connected to a constant voltage circuit 49 via resistors 46, 47 and 48, respectively, and the constant voltage circuit 49 is connected to a battery 44. Output of the constant voltage circuit 49 is connected to an input port I ₄ of the solenoid control circuit 40, electric power is supplied to the solenoid control circuit 40. An input port I ₅ of the solenoid control circuit 40 is connected to the constant voltage circuit 49 via a pulse shaping circuit 50. The pulse shaping circuit 50 includes, for example, a differentiating circuit and a constant voltage circuit. The door switch 42 is turned on when the door 1 is opened, and the room lamp 43 connected to the battery 44 is turned on, but turned off when the door is closed.

Transistor 51 is connected to the output port O ₁ of the solenoid control circuit 40. The emitter of the transistor 51 is grounded, and the collector is connected to the battery 44 via the coil of the relay 52. The movable piece of the relay 52 has a plurality of solenoids 31
(31a to 31d). Similarly, the transistor 53 is connected to the output port O ₂ of the solenoid control circuit 40. The emitter of the transistor 53 is grounded, and the collector is connected to the battery 44 via the coil of the relay 54.
The movable piece of the relay 54 is connected to the other ends of the plurality of solenoids 31 (31a to 31d). Further, the output ports O ₃ of the solenoid control circuit 40 is a light emitting diode 55 as a display device is connected via a resistor 57.

Hereinafter, the operation of the vehicle door lock device according to the present invention will be described with reference to FIGS. 4 and 5.

When locking the door 1 from outside the vehicle, the key cylinder of the cylinder lock 11 of the closed door 1 is operated in the locking direction by a key (step 60). When the door 1 is closed, the latch of the lock device main body 10 is engaged with the striker on the vehicle body side. When the lock device body 10 is unlocked, the switching arm
Reference numeral 17 denotes an unlocking position where the engaging portion 17b engages with the claw 18a of the detent member 18. When the cylinder lock 11 in the unlocked state is rotated by a key in the locking direction, the operating rod 12 moves downward in FIG. 1, and the lower end 12b of the operating rod 12
Since the swinging lever 13 is rotated clockwise while coming into contact with the lower end of 3b, the switching arm 17 moves to the locking position shown in FIG. In the locked position, even if the switching arm 17 moves downward due to the rotation of the handle lever 19, the switching arm 17 does not come into contact with the detent member 18, so that the door 1 cannot be opened.

When the cylinder lock 11 is rotated to the lock position by the key,
The lock switch 23 is turned on by the magnet 7 (step
60a). At the same time, the swing lever 13 rotates clockwise in FIG. 2 to rotate the switching arm 17 to a locked position where it does not come into contact with the detent member 18. When the lock switch 23 is turned on,
Input voltage of the input ports I ₃ of the solenoid control circuit 40 shown in FIG. 4 goes low.

Although the locked state determining means is provided in the solenoid control circuit 40 (not shown), the locked state determining means when the input voltage of the input port I ₃ becomes low level, the door switch 42 (42 a to 42 d) and the door lock Switch 45 (45a to 45
Determine the state of d). That is, when all the doors 1 are closed, the door switch 42 is off (step 60).
b). At this time, the input of the high level is applied to the input port I _1. When all the lock device bodies 10 are locked, the door lock switch 45 is turned off (step
60c), this time, the input of the high level is applied to the input port I _2.

The lock state determination means of the solenoid control circuit 40 determines the lock state of the door 1 from the input signals of the input ports I ₁ , I ₂ and I _{3 in} the above state, and activates the timer means (step 61). The timer means starts counting five seconds from the time when the lock switch 23 is turned on when all the doors are locked in step 60c. In practice, the driver rotates the key to the locked position and then removes the key from the cylinder lock 11 in the locked position. Next, in the locked state determination state, it is determined in step 61a whether or not the lock switch 23 is in the off state.
It is determined whether or not the on state is continued for a second. If the conditions are not sufficient in steps 60a to 60c and 61a, the process returns to the start, but if 5 seconds have not elapsed in step 61b, the process returns to step 61a. When 5 seconds have elapsed in step 61b, the solenoid control circuit 40 sets the output port O ₁
Generates a drive signal. At the same time, the output is generated from the output port O _3, since the light emitting diode 55 as a display device for lighting (step 61c), it can be confirmed that the rocking lever 13 becomes blocked. At this time, the solenoid 31
(31a to 31d) are urged, and the plunger 30 projects to the operation inhibition position and is fitted into the hole 13d of the swing lever 13 (step 62), so that the swing lever 13 is in the blocked state.
This results in a deadlock state in which the operation of the swinging lever 13 is blocked, and even if the rod 21 is illegally pulled upward by the slim gym 5 as shown in FIG.
Is not switched to the unlocked state.

Next, when a key is inserted into the cylinder lock 11 at the lock position and the key is used to rotate the cylinder lock 11 to the neutral position in the unlocking direction, the lower end portion 12b of the operation rod 12 becomes a long hole of the swing lever 13. 13b moves from the lower end toward the upper end. At this time, the lock switch 23 is turned off by the rotation of the cylinder lock 11 (step 63a), and a non-lock signal is generated. Next, after the operation of the light emitting diode 55 is stopped (step 63b), the lock state determination means determines whether the key has been rotated from the neutral position to the lock position (step 64). When the key is turned to the lock position, the lock switch 23 is turned on (step 64a), and the lock switch 2 is turned on.
The third output to generate a driving signal from the output port O ₂ of the solenoid control circuit 40. Therefore, the solenoid 31 (31a
31d) are biased to the opposite polarity, and the plunger 30 moves from the protruding operation inhibiting position to the retracted operation allowable position, so that the block of the swing lever 13 is released (deadlock state release) (step 64b). ). When the key is not rotated to the lock position in step 64, the blocking state of the swing lever 13 by the plunger 30 is continued in step 64c, and the process returns to step 64.

In the present embodiment, changes can be made. When the key is rotated from the lock position to the neutral position, in step 63a, the lock switch 23 is turned off by rotation of the cylinder lock 11, and
Generate an unlock signal. When a non-lock signal is generated, the voltage applied to the input port I ₃ of the solenoid control circuit 40 rises to a high level. Therefore, the locked state determining means detects that it is rotated in the unlocking direction by the regular key, to generate a driving signal from the output port O _2. For this reason, the solenoids 31 (31a to 31d) are biased to opposite polarities,
Since the plunger 30 moves from the protruding operation inhibiting position to the retracted operation allowable position, the blocking state of the swing lever 13 may be released.

When the cylinder lock 11 is moved from the neutral position to the unlock position,
The lower end 12b of the operating rod 12 contacts the upper end of the long hole 13b of the swing lever 13 to rotate the swing lever 13 counterclockwise in FIG. It is rotated to the unlock position where it contacts the detent member 18. When the plunger 30 is in the unlocked retracted position and the knob 22 is manually pulled as shown in FIG.
10 can be unlocked.

The above embodiments of the present invention can be modified. For example,
The solenoid control circuit 40 can be constituted by the discrete circuit shown in FIG. In FIG. 6, the same portions as those shown in FIG. 4 are denoted by the same reference numerals, and description thereof will be omitted.

That is, the door switch 4 is connected to the input terminal of the AND gate 70.
2. Connect the door lock switch 45 and the lock switch 23. When all the doors 1 are closed and locked and the door switch 42 and the door lock switch 45 are turned off and the lock switch 42 is turned on, the AND gate 70 operates as a timer circuit.
A trigger signal is given to 71. The timer circuit 71 counts for 5 seconds, and gives a signal to the output circuit 72 after the lapse of 5 seconds. For this reason, the transistor 51 is turned on by the output of the output circuit 72, the solenoid 31 is operated, and the plunger 30 projects to the operation preventing position. Therefore, the door lock device body 10
Cannot be unlocked. At the same time, the R / S flip-flop 73 is set by the output of the output circuit 72, and a high-level signal is applied to the AND gate 74 from the Q output terminal of the flip-flop 73.

The non-lock switch 24 generates a non-deadlock signal when the cylinder lock 11 is rotated from a lock position to a neutral position by a key. Therefore, the unlock switch 24
Is fixed to the neutral position of the cylinder lock 11. Turns on when the cylinder lock 11 is rotated from the lock position to the unlock position by the key.
The output is applied to the AND gate 74. Therefore, when the timer circuit 72 is operating, it is cleared by the non-deadlock signal of the non-lock switch 24. Further, the AND gate 74 supplies an output to the timer circuit 75 to switch on the transistor 53 for a certain period of time. Therefore, the solenoid 31 is biased in the opposite direction, and the plunger 30 is retracted to the operation allowable position.

FIG. 12 to FIG. 19 show third, fourth and fifth embodiments of the present invention. First, FIG. 12 is a flowchart showing an operation sequence applicable to the circuit diagram shown in FIG.
At the start of FIG. 12, when the key cylinder of the cylinder lock 11 is operated (step 100), the process proceeds to step 101, where the solenoid control circuit 40 turns the key cylinder to the lock position and turns on the lock switch 23. It is determined whether or not. Step 10 when the lock switch 23 is turned on
Proceeding to steps 2 and 103, the solenoid control circuit 40 determines whether all doors are closed and whether all doors are locked.
If no in steps 101 to 103, the process returns to step 100. All door switches in steps 102 and 103
When 42 is off and all the doors are locked, the solenoid control circuit 40 sets a 2-second timer by the timer means (step 104), and determines in step 105 whether the lock switch 23 is off.

If the key cylinder is held at the lock position in step 105 and the lock switch 23 is in the ON state, the process proceeds to step 106, where the timer means determines whether two seconds have elapsed. If two seconds have not elapsed, the process returns to step 105. If the lock switch 23 is on again, the process proceeds to step 106. If two seconds have elapsed, the process proceeds to steps 107 and 108 sequentially. Solenoid 31 at step 107 and 108 are actuated, in conjunction with the swing lever 13 is blocked, the output from the output port O ₃ of the solenoid control circuit 40 is generated, the light emitting diode 55 as a display device on, rocking It is displayed that the moving lever 13 is in the blocking state, and step 109
Proceed to. If the key cylinder does not rotate to the neutral position, steps 109 and 110 are cycled.

Since the lower end portion 12b of the operation rod 12 is connected to the long hole 13b of the swing lever 13 with play, when the swing cylinder 13 is in the blocking state and the key cylinder is rotated to the neutral position, the lock switch 23 is turned off ( Step 111), the light emitting diode 55 as a display device is turned off (step 11).
2). This results in a deadlock state in which the operation of the swing lever 13 is blocked, and as shown in FIG. 7, after establishing the anti-theft state in which the rod 21 cannot be unlocked even when the rod 21 is operated by the slim gym 5, You can leave the car.

After that, the driver returns to the car, and the cylinder lock 11
Is operated to rotate the key cylinder. At this time, in step 113, the solenoid control circuit 40 determines whether or not the key (key cylinder) has been rotated to the lock position.
When the key is not rotated to the lock position, the block of the swing lever 13 is continued (step 114). When the key is rotated to the lock position, the lock switch 23 is turned on (step 115), and the block of the swing lever 13 is released (step 116). In this way, in FIG. 12, when the lock switch 23 is kept on for a certain period of time, for example, two seconds, the swing lever 13 can be automatically switched to the block state.

Next, in the fourth embodiment shown in FIG. 13, when the lock switch 23 is turned on twice in two seconds, the swing lever 13 can be switched to the blocking state. 13, steps 120 to 124 are the same as steps 100 to 104 in FIG. The solenoid control circuit 40 determines whether or not the lock switch 23 has been turned off (step 125). If the switch is not switched off, the process proceeds to step 126, where it is determined whether or not two seconds have elapsed. If not, the process returns to step 125. If the two seconds have elapsed, the process returns to step 120. When the lock switch 23 is turned off in step 125, the process proceeds to step 127. In step 127, it is determined whether or not the lock switch 23 has been switched on again. If the lock switch 23 has been switched on, the process proceeds to step 129. If the lock switch 23 is maintained in the off state in step 127,
Proceeding to step 128, it is determined whether two seconds have elapsed.
If 2 seconds have not elapsed, the process returns to step 127, and if it has elapsed, the process returns to step 120. Steps 129 to 138 are twelfth
This is the same as steps 107 to 116 in the figure.

14 to 17 show a sidebar lock device 150 used as an example of the cylinder lock 11. FIG. The basic structure of a sidebar lock device is shown in, for example, US Pat. No. 3,080,774.

First, as shown in FIGS. 14 to 18, the sidebar lock device 150 has a case 151 and a key cylinder 152 rotatably housed in the case 151. Case 151
A receiving hole 153 formed in the longitudinal direction and a tumbler groove 154 (the 16th
17 and FIG. 17) and a locking groove 155 (FIGS. 14 to 16). The key cylinder 152 has a keyway 152a formed in the length direction, a plurality of slots 156 formed in the radial direction, and a hole 161 formed substantially at right angles to the slots 156. The key cylinder 152 is rotatably disposed in the housing hole 153 of the case 151. Multiple tumblers157
The tumbler groove 15 of the case 151 slidably into each slot 156 of the key cylinder 152 and outside the key cylinder 152.
4, and has a key hole 158.
The tumbler springs 159 are disposed between each tumbler 157 and the key cylinder 152, and the tumbler 157 is
Bias out of 152.

The side bar 160 is mounted on the key cylinder 1 as shown in FIG.
52 are slidably disposed in the holes 161 and each tumbler 157
Are arranged so as to be able to engage with the notches 162 at different positions.
Although not shown in detail, the notch 162 is formed at a different position for each tumbler 157 with respect to the key hole 158 in order to give a key code to each tumbler 157. A sidebar switch 163 is attached to the case 151, and the sidebar switch 163 detects the movement of the sidebar 160.
With 4. The movable piece 164 passes through the opening 165 provided in the case 151 from the sidebar switch 163, and the sidebar 16
Touching 0.

A stainless steel cover 166 is attached to the front of the case 151 and is fixed to the case 151 by caulking. Adjacent to both ends of the hole 161 of the key cylinder 152, the key cylinder
A lid 169 is fixed to 152. Side spring 167
Are disposed between the spring seats 160a formed at both ends of the side bar 160 and the lid 169, and the side bar 160 is tumbled.
Energize 157.

As shown in FIGS. 16 and 17, when the key 168 is not inserted into the key hole 158 of the tumbler 157, the tumbler 157 projects into the tumbler groove 154 of the case 151. In the conventional sidebar lock device, the tumbler groove from which the tumbler protrudes is not formed in the case. The side bar 160 protrudes into the locking groove 155 of the case 151.

The fourth Unlike view of an embodiment, in the embodiment shown in FIG. 14, the side-bar switch 163 is connected to the input port I ₆ of the solenoid control circuit 40, the constant is the side bar switch 163 via the resistor 56 The voltage circuit 49 is connected.

Next, as shown in FIGS. 14 to 16, when the key 168 is inserted into the key groove 152a of the sidebar lock device 150, the key is inserted into the key hole 158 of the tumbler 157, and the tumbler 157 is moved from the key cylinder 152. Move to the retracted position where it does not protrude. In addition, the side bar 160 has the notch 16 of each tumbler 157.
15 and is moved to the retracted position in FIG. 15 where it does not protrude from the key cylinder 152 by the elastic force of the side spring 167, so that the key 168 can be rotated to the unlocked position.

As is apparent from FIG. 16 showing a state where the key 168 is not inserted into the key groove 152a of the sidebar lock device 150, the rotation of the key cylinder 152 is prevented by the sidebar 160 and the tumbler 157. Therefore, the sidebar 160 and the tumbler 1
With a shear strength of 57, the strength against unauthorized rotation of the key cylinder 152 can be increased by at least 50% over the prior art. The strength against this breakage actually depends on the shape and size of the sidebar 160 and the tumbler 157. However, the practice of the present invention does not require the use of particularly small sidebars and tumblers. In other words, when obtaining the same strength as the conventional sidebar lock device, according to the present embodiment, the sidebar lock device can be manufactured very small.

Generally, sidebar 160 has a greater shear strength than tumbler 157. Therefore, when an improper torque is applied to the key cylinder 152, the torque is first applied to the sidebar.
It is also possible to adopt a configuration in which the tumbler 157 resists the rotational force after the sidebar 160 has deformed to some extent.

In the fifth embodiment of the present invention shown in FIGS. 14 to 17, the operation is performed based on the circuit diagram shown in FIG. 4 and the operation sequence shown in FIG. Sidebar switch 163 is used. When the key 168 is inserted into the key groove 152a, the sidebar switch 163 is turned on without rotating the key 168 because the sidebar 160 moves due to the alignment movement of each tumbler 157 and the elasticity of the side spring 167. . Because of this, the sidebar switch
163 can be used as unlock switch.

Specifically, the sidebar switch 163 is operated based on the operation sequence shown in FIG. Steps 170 to 178 shown in FIG. 19 are the same as steps 100 to 108 shown in FIG.

After the swing lever 178 is switched to the blocking state in step 178, it is determined in step 179 whether the key 168 has been pulled out. After rotating the key cylinder 152 to the neutral position while the swing lever 13 is in the blocked state, the key 168
Is pulled out from the key cylinder 152, the sidebar switch 163 is turned off (step 181), and the light emitting diode 55 as a display device is turned off (step 182). In step 179, unless the key 168 is pulled out from the key cylinder 152, steps 179 and 180 are circulated.

Step 182 is the same state as step 112 shown in FIG. That is, since the light emitting diode 55 as a display device is turned off and the operation of the swing lever 13 is blocked, a deadlock state is established.

In step 183, the solenoid control circuit 40 determines whether the key 168 has been inserted into the sidebar lock device 150 at the lock position. When the key 168 is not inserted, the block of the swing lever 13 is continued (step 184). When it is inserted, the sidebar switch 163 is turned on (step 185), and the block of the swing lever 13 is released (step 186).

Further, the sidebar switch 163 may be used in place of the unlock switch 24 shown in FIG.

Effect of the Invention As described above, the vehicle door lock device according to the present invention cannot unlock the door lock device in the deadlock state even if an illegal tool is used. Also, the vehicle door lock device of the present invention does not require a complicated door lock actuator conventionally required to be disposed at each door,
A relatively inexpensive and reliably operated automobile door lock device can provide a great effect in preventing theft of a vehicle.

[Brief description of the drawings]

1 is a front view of an automobile door lock device according to the present invention, FIG. 2 is a rear view of a cylinder lock, FIG. 3 is a side view of a solenoid, FIG. 4 is an electric circuit diagram showing a solenoid control circuit, FIG. FIG. 6 is a flowchart showing an operation sequence of a solenoid control circuit, FIG. 6 is an electric circuit diagram of a solenoid control circuit showing another embodiment of the present invention, FIG. 7 is a sectional view of a door having a conventional door lock device, FIG. 8 is a front view of the door lock device in a locked state, FIG. 9 is a side view of FIG. 8, FIG. 10 is a front view of the door lock device in an unlocked state,
11 is a side view of FIG. 10, FIG. 12 is a flowchart showing an operation sequence of a solenoid control circuit showing a third embodiment of the present invention, and FIG. 13 is a solenoid control circuit showing a fourth embodiment of the present invention. FIG. 14 is a cross-sectional view taken along line AA of FIG. 16 showing a cross-section of the sidebar lock device without a key inserted therein, and FIG. 15 is a cross-sectional view of the sidebar lock device with a key inserted therein. 16 is a sectional view taken along line AA of FIG. 16, FIG. 16 is a sectional view taken along line BB of FIG. 14, FIG. 17 is a sectional view taken along line CC of FIG.
FIG. 18 is a sectional view of a key cylinder, and FIG. 19 is a flowchart showing an operation sequence of a solenoid control circuit according to a fifth embodiment of the present invention. 1 ... door, 10 ... lock device body, 11 ... cylinder lock, 11a ... lever, 12 ... operation rod, 13 ... swing lever, 13b ... long hole, 15 ... relay rod, 23 ... … Lock switch, 30 …… Plunger, 31 …… Solenoid, 40…
... solenoid control circuit, 42 ... door switch, 45 ... door lock switch, 55 ... display device, 163 ... sidebar switch,

────────────────────────────────────────────────── ─── Continuing from the front page Examiner Akira Itoh (56) References JP-A-2-261179 (JP, A) Jikai Sho 62-88056 (JP, U) (58) Fields investigated (Int. Cl. ⁶⁾ , DB name) E05B 65/12-65/42

Claims (3)

(57) [Claims] 1. A lever (11a) rotated between a locked position, an unlocked position, and a neutral position provided between the locked position and the unlocked position by inserting and rotating a regular key. A lock switch (23) for detecting that the lever (11a) of the cylinder lock (11) has been turned to the lock position, and a plurality of cylinder locks (11) provided on the door (1) of the automobile. A door switch (42) for detecting each open / close state of the door (1), and a plurality of doors (1)
Door lock switch (4
5) and a lock device body (10) operatively connected to the door handle and the cylinder lock (11) and locking and unlocking the door (1).
The locking device body (10) is provided with a detent member (1
8) Equipped with a swing lever (13) to control the cylinder lock (1
The lever (11a) of (1) is connected to the long hole (13b) of the rocking lever (13) by an operating rod (12) with a gap provided between the lever (11a) and the rocking lever (10) of the locking device body (10). Solenoid (31) having a plunger (30) detachably attached to 13)
And a solenoid control device (40) that receives outputs from the door switch (42) and the door lock switch (45) and controls the solenoid (31), wherein all doors (1) are closed and locked. When the lock switch (23) is kept on for a certain period of time or the lock switch (23) is turned on a plurality of times within a certain period of time, the solenoid control device (40) turns on the solenoid (31). Activate the swing lever (13)
The lever (11a) can be rotated to the neutral position by the gap provided in the long hole (13b) of the swinging lever (13), and the lever (11a) is neutralized. A door lock device for an automobile, wherein a deadlock state is released by a signal of a lock switch (23) generated when rotating from a position to a lock position or from a lock position to a neutral position. 2. A lever (11a) which is rotated between a locked position, an unlocked position and a neutral position provided between the locked position and the unlocked position by inserting and rotating a proper key. A lock switch (23) for detecting that the lever (11a) of the cylinder lock (11) has been turned to the lock position, and a plurality of cylinder locks (11) provided on the door (1) of the automobile. A door switch (42) for detecting each open / close state of the door (1), and a plurality of doors (1)
Door lock switch (4
5) and a lock device body (10) operatively connected to the door handle and the cylinder lock (11) and locking and unlocking the door (1).
The locking device body (10) includes a swing lever (13) for controlling the detent member (18), and the lever (11a) of the cylinder lock (11) includes an operating rod (12).
A door lock device for an automobile connected to a long hole (13b) of a swing lever (13) with a gap by means of a solenoid (31) having a plunger (30) detachably attached to the swing lever (13) And a solenoid control device (40) that receives outputs from the door switch (42) and the door lock switch (45) and controls the solenoid (31), wherein all doors (1) are closed and locked. When the lock switch (23) is kept in the ON state for a certain period of time, the solenoid control device (40) activates the solenoid (31) to enter a deadlock state in which the movement of the swing lever (13) is prevented. Then, the lever (11a) can be rotated to the neutral position by the gap provided in the long hole (13b) of the swing lever (13). When the regular key is inserted into the cylinder lock (11), the cylinder Automotive door lock device, characterized in that a deadlock state is released of the solenoid (31) by the signal of the side-bar switch (163) provided in (11). 3. A display device (55) is connected to the solenoid control device (40), and the display device (55) is activated when a deadlock condition occurs. Car door lock device.