JPS5914562A - Keyless steering locking device - Google Patents

Abstract

PURPOSE:To perform unlocking of a lock automatically and reliably, by a method wherein an alarm is raised and an actuator is reactuated when a locking rod does not move to an unlocking position even after the lapse of a given period of time after generation of an unlocking signal. CONSTITUTION:When a plurality of manual switches 51-56 of an input circuit 50 is pressed in a given order and the unlocking switch 61 of an unlocking circuit 60 is pressed, a flip-flop 68 is set and a locking rod is moved to an unlocking position by turning a motor 22 positively. When the locking rod does move to the unlocking position even after the lapse of a fixed period of time after setting of the flip-flop 68, the flip-flop 68 is converted into a setting state three times and the motor 22 is actuated three times by outputs of counters 76 and 77 and a voice alarm is given by a voice circuit 100. When the locking rod comes to the unlocking position, a switch 27 is turned ON and an ignition circuit is electrified. When a suspension switch 91 is pressed, electrification to the ignition circuit 81 is suspended and locking of a lock is performed by inverting the rotation of the motor 22.

Description

[Detailed Description of the Invention] In the conventional keyless entry device, when a plurality of button buttons are pressed in a predetermined order, the car door is unlocked and entry can be made into the car. must be inserted into the ignition lock and turned.

Therefore, even if the vehicle has a keyless entry device, the driver must always carry the key with him or her.

The object of the present invention is to provide a keyless steering lock device that allows the vehicle to be operated completely without using a key by making the steering lock keyless, and has an anti-theft function. What is done is as stated in the claims above.

Hereinafter, a specific embodiment of the present invention will be described with reference to the drawings. A keyless steering lock device according to the present invention has a frame 10 to which a bearing 12 that supports a steering shaft is fixed. The frame 10 has a cylindrical hole 11, and a bearing 12 is press-fitted into one end thereof. A guide hole 13 connected to the cylindrical hole 11 and a housing cavity 14 are formed in the upper part of the frame 10, and the upper part of the guide hole 13 is connected to the housing cavity 14 and is provided with a switch chamber 15 and a solenoid chamber 16. There is. A locking rod 17 and a hanger I8 are movably accommodated in the guide hole 13 so as to be engaged with and disengaged from the groove 41 of the steering shaft 40, and the locking rod 17 and hanger 18 are pressed in opposite directions by a spring 19, but are not locked. The portion 20 prevents separation beyond a predetermined distance.

As shown in FIG. 4, one example of the hanger 18 includes a rack 2.
1 is formed, and the rack 21 meshes with a gear 23 of a motor 22 arranged in the receiving cavity 14. Switch room 15
is provided with a switch 25 that detects the position of the hanger 18, and the switch 25 is a rod-up switch (RU and a rod down switch (RD switch) 2 which is pressed by a protrusion 26 of the hanger 18 when the hanger 18 is lowered by a motor 22, that is, in the locked position. As the RU switch 27 and the RD switch 28, known microswitches are used. As shown in FIG. 2, a hole 31 is formed in the side wall 30 of the hanger 18,
A plunger 33 of a solenoid 32 fits into this hole 31 .

The motor 22 and solenoid 32 are operated by a keyless steering lock control circuit shown in FIG. The keyless steering lock device according to the present invention has a plurality of manual switches 51 to 56, and these switches 51
- 56 are pressed in a predetermined order to generate a coincidence signal, and an unlocking switch 61, and an unlocking signal is generated by the output of the unlocking switch 6I and the coincidence signal of the input circuit 5o. an unlocking circuit 6o, an actuator 70 that moves the locking rod 17 of the steering lock to the unlocked position in response to the unlocking signal from the unlocking circuit 60, and moves it to the locked position in response to the locking signal; and the locking rod 17.
After the switch moves to the unlocked position, it automatically supplies driving current to the ignition circuit 81 and also starts the starter switch 82.
an engine drive circuit 80 that can drive a starter motor 83; and an engine stop circuit 90 that has a stop switch 91 and uses its output to give an engine stop signal to the engine drive circuit 80 and a lock signal to the actuator 70. .

The input circuit 50 can be a keyless entry device disclosed in Japanese Patent Laid-Open No. 56-105076, so a detailed explanation will be omitted. In this input circuit 50, the output terminals of the manual switches 51 to 56, which are basically connected to a power source, are connected to a comparator 58 through a chattering prevention circuit 57. When the manual switches 51 to 56 are pressed in a predetermined order and the signal applied to the comparator 58 matches the signal stored in the storage circuit 59, the comparator 58 generates a match signal;
This is applied to the RS flip-flop 62 of the unlocking circuit 60. The RS flip-flop 62 provides an output from the Q terminal to the AND gate 63 and the clear terminal of the counter 64 in response to the input from the cent terminal.

When the clear terminal of the counter 64 becomes H level, the counter 64 counts the number of pulses from the pulse generation circuit 65, and when the count reaches a predetermined value, the OR gate 66
produces an output that resets the RS flip-flop 62 through. In this way, the counter 64 has a function as a timer that resets it after a predetermined period of time after the RS flip-flop 62 is clocked.

When the unlock switch 61 is pressed while the RS flip-flop 62 is in the set state, both input terminals of the AND gate 63 become H level, producing an output, and the RS flip-flop 68 is sent through the OR gate 67. Therefore, the output from the Q terminal of the RS flip-flop 68 turns on the transistors 71 and 72 of the actuator 70, so that the motor 22 is driven in the forward rotation direction. As described above, when the motor 22 rotates forward, the hanger 18 rises due to the rotation of the gear 23, and the locking rod 17 moves to the unlocked position. When the locking rod 17 moves to the unlocked position, the plunger 33 of the solenoid 32 engages with the hole 31 of the hanger 18,
Accidental movement of the locking rod 17 into the locked position is prevented.

When the hanger 18 moves to the raised position, that is, the unlocked position, the RU switch 27 is pressed by the protrusion 26 and turned ON, so that the RU switch 27 connected to the power source is turned on as shown in FIG.
Since the RS flip-flop 68 is reset by the output of 7 through the OR gate 75, the Q terminal of the RS flip-flop 68, which outputs a signal to drive the motor 22, goes to L level and the drive of the motor 22 is automatically stopped.

In FIG. 2, when the locking rod 17 rises from the locked position where it engages with the groove 41 of the steering shaft 40 to the unlocked position where it does not engage, the locking rod 17 bites into the groove 41 and operates the motor 22 once. The locking rod 17 may not move to the unlocked position if the locking rod 17 is only moved to the unlocked position. When such a jamming phenomenon occurs, the present invention allows the motor 22 to be automatically operated again. That is, first, the RS flip-flop 68 produces an output from the Q terminal, and the transistor 7
1 is shifted to ON, the motor 22 rotates in the forward direction, but at this time, the Q terminal output of the RS flip-flop 68, the clear terminal of the counter 76 goes to H level, and the clock terminal of counter 77 goes to H level. . When the clear terminal of the counter 76 becomes H level, the counter 76 counts the number of pulses from the pulse generation circuit 65, and when a certain number of pulses are counted, outputs from the Q terminal and resets the RS flip-flop 68 through the OR gate 75. . Therefore, the Q terminal of the RS flip-flop 168 becomes L level, so the counter 76 is cleared and the counter 76 is cleared.
7 captures the falling signal when the Q terminal of the RS flip-flop 68 changes from H level to L level and outputs the R signal.
The number of outputs of the S flip-flop 68 is counted. Of course, when the lock rod 17 is normally moved to the unlocked position by the motor 22, the RU switch 27 remains in the ON state, so the counter 77 is held in the clear state by the output of the NOR gate 78 and does not perform a counting function.

However, if the motor 22 does not move the locking rod 17 to the unlocked position even after a certain period of time has passed after the RS flip-flop 6 days has been set, the RS flip-flop 68 is reset as described above by the output of the counter 76.
The counter 77 counts 1 in response to the falling signal and produces an output from its Q1 terminal. O due to Q1 output of counter 77
The flip-flop 68 is set again through the R gates 79 and 67, and an audio warning is given to the driver through the audio circuit 100. When the driver hears this warning,
The locking rod 17 and the steering shaft 40 can be released by rotating the steering wheel. At the same time, when the RS flip-flop 68 is set again, the motor 22 is operated by the Q terminal output, and the counter 76 starts counting. Cent handling of RS flip-flop 68 When locking rod 17 does not move to the unlocked position even after a predetermined period of time has elapsed, RS flip-flop 68 is reset by the Q terminal output of counter 76. Therefore, the counter 76 is cleared by the falling signal of the Q terminal of the RS flip-flop 68, and the counter 77 is cleared.
counts 2, and from its Q2 terminal OR gates 79 and 67
By applying a third set signal to the RS flip-flop 68 through the RS flip-flop 68, the motor 22 can be driven three times. However, if the locking rod 17 does not move to the unlocked position even after the motor 22 is driven three times, the manual switches 51 to 56 or the unlocking switch 61 of the input circuit 50 must be operated again.

When the locking rod 17 is normally moved to the unlocked position by the operation of the motor 22, the RU switch 27 is turned ON.
This signal is applied to the AND gate 92 of the engine stop circuit 90.
and is sent to the one-shot multi-by-break (03M) 84 of the engine drive circuit 80. The output of 03M84 is applied to RS flip-flop 85, converting it to a cent state. When the RS flip-flop 85 is set, its Q terminal output is ANDed with the transistor 87.
A gate 88 is provided. When a voltage is applied to the base of the transistor 87, the base current causes the transistor 87 to
is turned on, and the ignition circuit 81 is energized.

The engine drive circuit 80 has an engine rotation sensor 110 that generates a signal at H level when the engine is stopped and at L level when the engine is rotating.
Inverting input terminal of gate 121 and engine stop circuit 90
is applied to the AND gate 96 of . The output of starter switch 82 is applied to the inverting input terminals of AND gates 88 and 112. Further, the AND gate 112 receives the output of the running sensor 111 of the engine stop circuit 90. The running sensor 111 generates a signal at level 7 when the vehicle is running and at H level when the vehicle is stopped. The output of AND gate 88 is sent to the base of transistor 89 that drives starter motor 83 and to OR gate 122 of ACC circuit 120 .

The output of AND gate 112 is sent to counter 113. This counter 113 receives the output of the pulse generating circuit 65 and has a Q terminal connected to the AND gate 92. As mentioned above, when the locking rod 17 moves to the unlocked position,
RU switch 27 is turned on and R is turned on through 03M84.
S flip-flop 85 is set and AND gate 9
2 is given one input. When the RS flip-flop 85 is sent, its Q terminal output causes the AND gate 8
8 is given one person's power, but the running sensor Ill when stopped
Since a signal is given to the AND gate 112 from the AN
AND gate 11 by the inverting input terminal of D gate 112
2 produces an output. The clear terminal of the counter 113 that receives the output of the AND gate 112 causes the counter 113 to start counting, and when a predetermined number of pulses are received from the pulse generation circuit 65, an output is generated from its Q terminal, and the AND gate 9
given to 2. At this time, AND gate 92 receives two inputs, so it generates a signal to reset RS flip-flop 85 through OR gate 93 and AND gate 94. Therefore, the starter switch 82 must be pressed within a certain period of time after the RU switch 27 is turned on. When the starter switch 82 is turned on within this fixed time, the AND gate 88 generates an output and turns the transistor 89 energized, so that the starter motor 83 is driven. During driving, the RS flip-flop 123 is converted into a reset signal through the R gate 122. . RS flip-flop 1
23 is set through the OR gate 121 when a match signal is generated from the comparator 58 of the input circuit 50 or when the engine rotation sensor 110 detects engine rotation, so the output generated from the Q terminal of the transistor 23 is set. 124 becomes O, N, and the ACC circuit (accessory circuit) is turned on. However, when the starter motor 83 is operating, the RS flip-flop 12
3 is reset.

When the engine rotates normally due to the operation of the starter motor 83, the output of the engine rotation sensor 110 changes from the H level to the L level.
The output of 2 is stopped, so transistor 89 is turned OFF.
Since counting by the counter 113 is also inhibited at the same time as it reaches F, no reset signal is generated from the Q terminal of the counter 113.

However, as described above, if the starter switch 82 is not pressed within the time set by the counter 113, the RS flip-flop 85 is reset and the AND gate 92
, one human power is given to the AND gate 94 through the OR gate 93, so when the running sensor 111 is at H level, the AND gate 94 produces an output, and the OR gate 1
I can get 22. While the car is running, the running sensor 111 is set to L.
level, so the AND gate 94 does not produce an output.

The OR gate 93 of the engine stop circuit 90 produces an output when it receives the output from either the AND gate 92 or the stop switch 91 that is pressed when stopping the engine. When the gate 94 is stopped, it generates an engine stop signal, and this signal resets the RS flip-flop 85. At the same time, the RS flip-flop 123 is reset through the OR gate 122, and the RS flip-flop 95 is reset.
is set. By resetting the RS flip-flop 85, the ignition circuit 81 is de-energized, and the RS
By resetting the flip-flop 123, the ACC circuit 1
25 is de-energized.

Furthermore, by setting the RS flip-flop 95, one power is given to the AND gate 96 from its Q terminal, and this other input is input from the engine rotation sensor 110 because the rotation of the engine is stopped by stopping the power supply to the ignition circuit 81. Receives an H level signal. Therefore, AND gate 96. generates an output, which is input to transistors 73 and 74 of actuator 70 through the base of transistor 97 connected to solenoid 32 and a delay circuit. The AND gate 96 receives input from the engine rotation sensor 110 in order to prevent the locking rod from moving to the unlocked position while the engine is rotating. In addition, the delay circuit 98 operates the solenoid 32 first to move the plunger 33 into the hole 3 of the hanger 18 in FIGS. 1 to 3.
1, the output of the AND gate 96 is delayed in order to rotate the motor 22 and move the hanger 18 and locking rod 17 to the locked position. As is clear from FIG. 5, when the transistors 71 and 72 conduct, the motor 22 rotates in the forward direction and the locking rod 17 is moved from the locked position to the unlocked position, whereas when the transistors 73 and 74 conduct, the motor 22 rotates forward. It rotates in the opposite direction to move the locking rod 17 from the unlocked position to the locked position.

When the locking rod moves to the locked position, the protrusion 2 of the hanger 18
6 presses the RD switch 28, so the RD switch 2
8 resets the RS flip-flop 95. Therefore, the operation of solenoid 32 and motor 22 is stopped. Although the illustrated example uses a motor to move the locking rod 17, a solenoid may also be used to move the locking rod 17.

To explain the operation of the keyless steering lock according to the present invention, when the driver presses a plurality of manual switches 51 to 56 attached to the door or dash board in a predetermined order, a match signal is generated from the comparator 58, and the RS
Flip-flop 62 is set. At the same time, counter 77 is cleared and RS flip-flop 123 is reset. Next, when the driver presses the unlock switch 61 before the time-up time of the counter 64, the RS flip-flop 68 is set through the AND gate 63 and the OR gate 67, and the RS flip-flop 62 is reset. By setting the RS flip-flop 68, the motor 22 rotates in the forward direction, and the locking rod 17 automatically moves from the locked position to the unlocked position.

The locking rod 17 is connected to the RS flip-flop 68.
1 & If the lock does not move to the unlocked position due to jamming after a certain period of time has elapsed, the output of the counters 76 and 77 converts the RS flip-flop 68 to the set state three times, activates the motor 22 three times, and the audio circuit 100 issues an audio alarm. give.

When the locking rod 17 moves normally to the unlocked position, the RU
switch 27 is turned on, RS flip-flop 85 is set through 03M84, and AND gate 9
2 is given input. From this point on, AND gate 112
Since an H level input is given to the clear terminal of the counter 113 through the
When 2 is not pressed, the Q terminal output of the counter 113 is used to perform an AND operation through an AND gate 92 and an OR gate 93.
An input is given to the gate 94, and when the car is stopped, the output of the running sensor 95 is at H level, so the AND gate 94 generates a stop signal.

However, if the starter switch 82 is pressed within the predetermined time, the starter motor 83 is operated through the AND gate 88, and the RS flip-flop 123 is reset, thereby turning the ACC circuit off. At the same time, the AND gate 112 outputs an L level through its inverting input terminal, and the counter 113 stops counting.

Since the ignition circuit 81 is already energized by the power of the RS flip-flop 85, when the engine rotates due to the operation of the starter motor 83, the output of the engine rotation sensor 110 changes from the H level to the L level. Therefore, the counter 113 stops counting and the OR gate 12
1, the RS flip-flop 123 is set again and the ACC circuit 125 is energized. Since the counter 113 is connected, when the engine stops during operation, if the starter switch 82 is not pressed and the engine is not rotated within a predetermined period of time, the AND gate 9
A stop signal is generated from 4.

When the driver exits the vehicle, a stop switch is pressed. If the car is completely stopped, the driving sensor 111
produces an H level output, so the output of the stop switch 91 reaches the AND gate 94 through the OR gate 93 and A
A stop signal is generated from the ND gate 94. This stop signal resets the RS flip-flop 85 and stops the energization of the ignition circuit 81. At the same time, the RS flip-flop 123 is reset through the OR gate 1-122 and the ACC circuit 125 is also prevented from being energized. Further, the RS flip-flop 95 is set, and the engine rotation sensor tiO generates an H level output because the engine is stopped after the ignition circuit 81 is de-energized, so an output is generated from the AND gate 96, and therefore the solenoid 32 is activated. After the plunger 33 and the hanger 18 are disengaged from each other, the motor 22 is released through the delay circuit 98.
is rotated in the opposite direction, and the locking rod 17 is moved to the locked position. In the locked position, the RD switch 28 is turned on, so the RS flip-flop 95 is reset.

When installing the device of the present invention on the steering shaft of an automobile, each component is first loaded into the frame 10. That is, a motor 22 having a locking rod 17, a spring 19, a hanger 18, a switch 25, a solenoid 32, and a gear 23.
A controller having the circuit shown in FIG. 5 is housed in a predetermined position within the frame 10. Thereafter, as shown by dotted lines in FIGS. 1 and 2, the upper part of the frame 10 is covered with the lid 44, and the upper end 45 of the frame is crimped to fix the lid 44. After each component is assembled into the frame 10, the steering shaft 40 is inserted into the cylindrical hole 11, and the bearing 12 is placed at a predetermined position on the steering shaft 40. In this state, when the locking rod 17 is in the locked position, this device cannot be removed from the steering shaft due to the engagement with the groove 41. When it is necessary to release the lock, the manual switches 51 to 56 located outside the frame 10 are pressed in a predetermined order, and then the unlock switch 61 is pressed.

As mentioned above, with the keyless steering lock device of the present invention, it is possible to operate a theft-protected vehicle without using the key at all, so there is no need to carry the key, and accidents that result in the key being locked inside the vehicle do not occur. Moreover, by operating the unlocking switch, the steering lock is automatically unlocked and the ignition circuit is automatically energized, and by operating the stop switch, the steering lock is automatically locked and the engine is stopped automatically. It is something.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view of the keyless steering lock device according to the present invention, Fig. 2 is a front sectional view thereof, Fig. 3 is a plan view thereof, Fig. 4 is a perspective view excluding the frame, and Fig. 5 is an electric control A circuit diagram is shown. 17...Lock rod, 50...Input circuit, 51-56...Switch, 6o Old...Unlock circuit, 61...Unlock switch ,70・old・・
Actuator, 8°...Engine drive circuit,
81...Ignition circuit, 82...
・Starter switch, 90...Engine stop circuit. Patent applicant: Kokusan Metal Industry Co., Ltd.

Claims (1)

[Claims] It has an input circuit that includes a plurality of manual switches and generates a coincidence signal when these switches are activated in a predetermined order, and an unlock switch, and the unlock switch is unlocked by the output of the unlock switch and the coincidence signal of the input circuit. an unlocking circuit that generates a lock signal;
An actuator that moves the locking rod of the steering lock to the unlocked position in response to an unlocking signal from an unlocking circuit, and moves it to the locked position in response to a locking signal, and an ibnirasilane circuit that automatically moves the locking rod to the locked position after the locking rod moves to the unlocked position. an engine drive circuit that can supply a drive current to the engine drive circuit and drive the starter motor with a starter switch, and a stop switch that provides an engine stop signal to the engine drive circuit and a lock signal to the actuator by the output of the stop switch; A keyless steering lock device comprising a circuit, which generates an alarm and operates the actuator again if the locking rod does not move to the unlocked position even after a predetermined period of time has elapsed after an unlocking signal is generated. Steering lock device.