JP2578355B2 - Steering lock control device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock control device, and more particularly to a control device for a steering lock that controls rotation of a steering shaft of an automobile.

2. Description of the Related Art As shown in, for example, Japanese Patent Application Laid-Open No. 61-295154, a current automobile uses a steering lock device that simultaneously controls a steering shaft and an ignition switch of the automobile. This steering lock device includes a key cylinder housed in a frame and rotated between a locked position and an unlocked position by a key, a cam rotated with the key cylinder, a locked position engaged with the steering shaft, and A locking rod that is moved by the cam and spring between an unlocked position where the cam is released, and an ignition switch operatively connected to the rear of the cam. When the key is inserted into the key cylinder and rotated, the key can be sequentially rotated to the lock position, the off position, the ACC position, the engine on position, and the start position for operating the starter motor. If the key is removed at the lock position, the rotation of the key cylinder will be blocked and the operation of the ignition switch will be prohibited,
The locking rod is engaged with the steering shaft, preventing the rotation of the steering shaft and preventing theft.

Further, for example, as shown in Japanese Patent Publication No. 49-11908, a lock position rotation preventing device provided in a steering lock device is provided with a locking piece that engages with a key cylinder rotating member of the steering lock device. After pressing the locking piece, a mechanical structure capable of rotating the key to the locked position or as shown in Japanese Utility Model Publication No. 55-1966, an engaging portion with the frame was provided on the key cylinder, and the key cylinder was pressed together with the key. Later, it has a mechanical structure that can rotate the key to the locked position. The lock position anti-rotation device provides the driver with the opportunity to reconsider the operation by requiring an additional operation of pressing the locking piece or key before the driver turns the key to the locked position, We are improving.

On the other hand, when the car is completely stopped and the driver gets off the car, when the key is turned to the locked position,
The lock position anti-rotation device requires the driver to perform additional operations. However, such an additional operation is cumbersome for the driver, since the finger must be pressed with one hand and the key must be turned with the other hand. For this reason, there has been a demand for a device that can be operated with a simplified operation.

On the other hand, in a vehicle equipped with an automatic transmission, there is a risk that the vehicle will suddenly start due to a driver's erroneous operation. In order to prevent an unexpected sudden start, the shift lever of the transmission must be switched to the parking position when the engine is started.

In a conventional vehicle equipped with an automatic transmission, when a driver unconsciously operates a shift lever knob during a signal waiting time at an intersection, a solenoid operates to prevent key removal. A lock operation is performed. On the other hand, when a strong force is applied to the shift lever, the detent switch that detects the selected position of the shift lever opens and closes, and the solenoid is unnecessarily biased, even though the shift lever knob is not operated. Even if the solenoid is energized in such a situation, there is no obstacle to the safety of the vehicle equipped with the automatic transmission and the operation of the steering lock device, but an unpleasant impact sound is generated when the solenoid is operated. In addition, since a short-time rated solenoid is used, the solenoid may be burned out.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a steering lock control device in which the above-mentioned disadvantages are solved and a solenoid for controlling the operation of the steering lock device is not operated unnecessarily.

Means for Solving the Problems A steering lock control device according to the present invention includes a key detection switch (50, 51) for detecting an ACC position or an off position of a steering lock device, and a shift lever of a shift lever (115) in a parking position. A parking position detecting sensor (117) for detecting an operating position of the knob (116);
When the shift lever (115) is at a position other than the parking position, a keying switch (50, 50) is provided to prevent the key from being removed from the steering lock device by a signal from the parking position detection sensor (117).
51), a control circuit (52) connected to the parking position detection sensor (117) and the pullout prevention device (16). The pull-out prevention device (16) includes a rotation restricting lever (17) that can be engaged with the key cylinder (9), and a solenoid (18) that releases the engagement of the rotation restricting lever (17) with the key cylinder (9). It has. The control circuit (52) includes a detection timer for generating a reference time for counting a time interval when the parking position detection sensor (117) is activated a plurality of times, and a plurality of parking position detection sensors (117) within a predetermined time. An operation prohibition timer is provided for determining a time for preventing the operation of the solenoid (18) when it is operated twice. The control circuit (52) measures a plurality of operation time intervals of the parking position detection sensor (117), and prevents the operation of the extraction solenoid (18) when the operation time interval is within a predetermined time. After receiving the signal from the parking position detection sensor (117), the control circuit (52) does not receive the next signal of the parking position detection sensor (117) within the reference time of the detection timer, and the key detection switch (50). , 51) generates a signal to activate the solenoid (18) when receiving the signal.

When the driver moves the shift lever (115) to the parking position and unnecessarily activates the shift lever knob (116), the unnecessary operation of the shift lever knob (116) is detected and the removal prevention device ( The operation of the solenoid (18) of 16) is prevented.

Embodiment An embodiment of a steering lock control device according to the present invention will be described below with reference to FIGS.

First, when a shift lever knob 116 provided on a shift lever 115 of an AT (automatic) vehicle shown in FIG. 7 is pressed, a shift operation becomes possible. The detent switch 117 is provided as a parking position detection sensor that detects the parking position of the shift lever 115. Shift lever 115
Is in the parking position, and when the shift lever knob 116 is depressed, the detent switch 117 is operated by the pin 119 interlocked with the shift lever knob 116.

As shown in FIG. 1, the steering lock device 6 has a key cylinder 9 rotatably arranged in a housing 7b. As shown in FIGS. 1, 4 and 5, the key cylinder 9 has an inclined cam surface 13a ', flat cam surfaces 13a and 13c extending in the circumferential direction, and communication between the flat cam surfaces 13a and 13c. And a stopper portion 14.
The removal prevention device 16 provided on the housing 7b includes a rotation restricting lever 17 movably provided in the longitudinal direction of the housing 7b, and a solenoid for controlling driving of the rotation restricting lever 17.
Equipped with 18. The notches 17a and 17b provided on the rotation restricting lever 17 are engaged with the ball 19 biased by the spring 20. A pin 24 protruding from the arm 23 of the plunger 22 of the solenoid 18 is fitted into a long hole 17d formed in the rotation restricting lever 17. The rotation restricting lever 17 is provided with an engagement protrusion 17c that engages with the cam 13.

When the key cylinder 9 is in the lock position, the engagement projection 17c of the rotation restricting lever 17 is located between the inclined cam surface 13a 'and the stopper projection 14 as shown in FIG. When the key cylinder 9 is rotated from the position to the start position side by the key, the engagement projection 17c of the rotation restricting lever 17 is moved by the inclined cam surface 13b as shown in FIG.
After being moved to the key insertion side of the cam 13, it is disposed between the circumferential cam surface 13 c of the cam 13 and the rotor 12. Circumferential cam surface 1
1 is engaged with the notch portion 17b at a position between the rotor 3c and the rotor 12, and the engaging protrusion 17c of the rotation restricting lever 17 is formed between the flat cam surface 13c of the cam 13 and the rotor 12. It is held on the same circumference as the stopper projections 14 between them.

When the key cylinder 9 is turned from the start position side to the lock position side by the key to the off position between the ACC position and the lock position, as shown by the solid line in FIG. 17c abuts against the end face of the stopper projection 14 to prevent the key cylinder 9 from rotating to the locked position.
At this time, as shown in FIG. 11, the ignition switch
The ten movable contacts 10a close to the fixed contact 10b at the OFF position or the fixed contact 10c at the ACC position. In FIG. 11, 10d indicates an ON contact, and 10e indicates a start contact.

As shown in FIG. 6, a detent switch 117, a key detection switch 50 for detecting an ACC or an OFF position, and a key detection switch 51 are input circuits of a control circuit 52 as operation inhibiting means.
Connected to 53. The output of the input circuit 53 is provided to a determination circuit 54, and the determination circuit 54 is connected to the solenoid 18 via an output circuit 55. The discriminating circuit 54 is operated according to the flowchart shown in FIG. Although not shown, the determination circuit 54 includes a detection timer that generates a reference time for counting a time interval when the detent switch 117 is operated a plurality of times,
When the detent switch 117 is actuated a plurality of times within a certain period of time, an operation prohibition timer is provided to determine the time for which the operation of the solenoid 18 is blocked.

In step 60, the discrimination circuit 54 sets the key detection switch 50,
51 outputs the key cylinder 9 from the lock position to ACC
It is determined whether the rotation has been made to the position or the off position. When the key is inserted into the steering lock device and the key cylinder 9 is rotated to the ACC position or the off position, the key detection switches 50 and 51 are turned on, and the discrimination circuit 54 is turned on by the key cylinder 9.
Then, the process proceeds to step 61. In step 60, if the key is not turned to the ACC position or the off position, the process returns to the start. In step 61, the determination circuit 54 detects the operation of the detent switch (D / S) 117. If the detent switch 117 is not actuated, the process returns to the start. If the detent switch 117 is actuated, the detection timer in the discrimination circuit 54 is actuated, and the detent switch 117 is activated in step 62 within a predetermined time (for example, about 2 seconds). It is determined whether the operation has been performed a plurality of times. Here, when the operation is performed a plurality of times within the predetermined time, the operation prohibition timer is operated in step 63, and the operation of the solenoid 18 of the removal prevention device 16 is prevented. Thereafter, the process returns to step 62. If the detent switch 117 is not operated a plurality of times within the predetermined time in step 62, the process proceeds to step 64, and the determination circuit 54 determines whether or not the detent switch 117 is on. When in the ON state, the determination circuit 54 operates the solenoid 18 to move the rotation restricting lever 17. Thereby, the rotation restricting lever
The engagement between the engagement projection 17c of the 17 and the stopper projection 14 is released, and the key cylinder 9 can be rotated to the lock position. In step 65, the determination circuit 54 determines whether or not the key has been rotated to the lock position. If the key is not in the removal state, the process returns to step 62. Is returned to.

When the detent switch 117 is in the OFF state in step 64, the determination circuit 54 determines whether the key is in the ACC position or the OFF position, and in step 67, stops the operation of the solenoid 18 of the removal prevention device 16. For this reason, the key cannot be rotated to the lock position, and the key cannot be removed from the steering lock device. If the key is not off or in the ACC position in step 66, the process returns to step 62.

FIG. 10 shows another control mode of the present invention. Step 70
Then, as in step 60, the determination circuit 54 determines whether or not the movable contact 10a of the ignition switch 10 has closed to the fixed contact 10b in the off position or the fixed contact 10c in the ACC position by the rotation of the key. If not switched on, step
At 71, it is determined whether the detent switch 117 has been switched from on to off. In step 71, when the detent switch 117 is turned off, the determination circuit 54 determines whether the detent switch 117 has not been operated for a predetermined time. If the detent switch 117 is not operated for a predetermined time, the solenoid 18 of the key removal prevention device 16 is operated (step 73), and the process returns to the start. In step 72, if the detent switch 117 does not operate for a certain period of time determined by the detection timer, an operation prohibition timer is operated (step 75), and after the operation of the removal prevention device 16 is stopped for a certain period of time (for example, about 2 seconds). , Returned to the start. When the key is turned from the off position to the on position in step 70, the process proceeds to step 74, where it is determined whether the detent switch 117 is off.
When it is off, the process proceeds to step 72, and when it is on, it returns to the start.

If the detent switch 117 is not switched from on to off in step 71, the process proceeds to step 76, where the determination circuit 54 determines whether the detent switch 117 has been switched from off to on. If the switch is not switched on, the process returns to the start. If the switch is switched on, the detection timer of the determination circuit 54 determines in step 77 whether the detent switch 117 is not operated for a predetermined time. If the detent switch 117 is not operated for a certain period of time, the discriminating circuit 54 energizes the solenoid 18 and the key can be removed at step 79, and when the key is removed at step 80,
Proceed to step 81. When the detent switch 117 is operated within a predetermined time in step 77, the operation prohibition timer is operated for a predetermined time (about 2 seconds) in step 78, and the solenoid 18 is operated.
Is stopped and the operation returns to the start. If the key is not removed in step 80, the process returns to the start.

Referring to FIG. 8 showing another embodiment of the present invention, the manual operation member 212 constitutes a latch device slidably mounted on the casing 213 and controlling removal of a key from the steering lock device. Manual operation member 212
A push button 214 protruding to the front surface of the casing 213 is attached to the push button 214. The manual operation member 212 has an inner end which can be engaged with the key cylinder 9, but has the same structure and operation as those disclosed in JP-A-60-246969. The manual operation member 212 has a protrusion 212b, and a locking device 230 that controls the operation of the manual operation member 212 is provided adjacent to the protrusion 212b. The locking device 230 includes a shaft 231 fixed to the casing 213.
A substantially V-shaped lever 232 rotatably mounted on and having a first arm 232a and a second arm 232b;
A spring 233 is applied to apply a torque to rotate the lever 232 clockwise toward the unlocked position. The first arm 232a can engage with the protrusion 212b of the manual operation member 212. The locking device 230 is further provided with a solenoid 236 that is mounted on a side portion of the casing 213 by a bracket 235 and moves the lever 232 to a locked position or a non-locked position, and a contact piece 237 that protrudes from the solenoid 236 and is mounted. A plunger 238 and a compression spring 239 that is wound around the plunger 238 and presses and biases the plunger 238 to an outer locking position.
And a magnet 240 that holds the contact piece 237 in a non-locking position by a magnetic force when the plunger 238 is attracted inward by the solenoid 236. The locking device 230 includes the manual operation member 21.
It is movable between a protruding locked position and a retracted unlocked position which respectively block and allow movement of the two. Contact piece 23
7 has an arm portion 237a extending downward.
When a is moved to the front locking position by the solenoid 236, the lever a presses the lever 232 counterclockwise against the elasticity of the spring 233.

Next, the operation of the locking device 230 will be described. When the key is in the lock position, the contact piece 237 of the plunger 238
In the position shown by the solid line in the figure, the lever 232 is in the unlocked position rotated clockwise. When the key is rotated from the lock position to the start position in this state, the inner end of the manual operation member 212 is engaged with the cam 13 shown in FIG.

In this example, the key can be rotated to the lock position by pressing the manual operation member 212 only when the shift lever 115 is moved to the parking position. Shift lever 115
If is not in the parking position, solenoid 236 is actuated, 232a abuts 212b and push button 214 cannot be pressed.

In the above embodiment, the key is removed by restricting the rotation of the key cylinder. However, a notch, a hole, or the like may be formed in the key and a movable member engageable with the key may be provided to prevent the key from being removed. .

According to the present invention, even if the shift lever is shifted to the parking position and the shift lever knob is operated unconsciously, the solenoid for controlling the operation of the steering lock device is not operated unnecessarily. For this reason, an uncomfortable impact sound is not generated for the driver, and the danger of burning of the solenoid can be avoided.

[Brief description of the drawings]

1 is a sectional view of a steering lock device, FIG. 2 is a front view, FIG. 3 is a bottom view, FIG. 4 is a developed view of a cam, FIG. 5 is an exploded perspective view of a pull-out prevention device, and FIG. FIG. 7 is a block diagram of a steering lock control device according to the present invention, FIG. 7 is a front view of a shift lever, FIG. 8 is a side view of a steering lock device showing another embodiment of the present invention, and FIG.
10 is a flowchart for operating the control device shown in FIG. 10, and FIG.
FIG. 11 is a flowchart showing another embodiment of the circuit, and FIG. 11 is a block diagram showing a detailed input unit of the circuit shown in FIG. 6 Steering lock device 117 117 Detent switch (parking position detection sensor) 18 Solenoid (extraction prevention device) 52 Control circuit (operation prevention means) 115 Shift lever 116 Shift Lever knob,

Claims (1)

(57) [Claims] A parking switch for detecting an operation position of a shift lever knob (116) of a shift lever (115) in a parking position, and a key detection switch (50, 51) for detecting an ACC position or an off position of a steering lock device. A position detection sensor (117) and a removal prevention device (16) for preventing removal of a key from the steering lock device by a signal from the parking position detection sensor (117) when the shift lever (115) is at a position other than the parking position. , A key detection switch (50, 51), a parking position detection sensor (117), and a control circuit (52) connected to the pullout prevention device (16). The pullout prevention device (16) is connected to the key cylinder (9). A rotation restricting lever (17) that can be engaged, and a solenoid (18) that releases the engagement of the rotation restricting lever (17) with the key cylinder (9). The circuit (52) includes a detection timer that generates a reference time for counting a time interval when the parking position detection sensor (117) is activated a plurality of times, and a parking position detection sensor (117) that operates a plurality of times within a predetermined time. An activation prohibition timer for determining a time period for inhibiting the operation of the solenoid (18) when activated, the control circuit (52) comprising: a parking position detection sensor (117);
A plurality of operation time intervals are measured, and when the operation time interval is within a predetermined time, the operation of the sampling solenoid (18) is prevented. The control circuit (52) controls the parking position detection sensor (117).
After receiving the signal from the controller, when the next signal of the parking position detection sensor (117) is not received within the reference time of the detection timer and the signal of the key detection switch (50, 51) is received, the solenoid (18) A) for generating a signal for operating the steering lock.