JPH0257454A - Burglar preventive device for automobile - Google Patents

Abstract

PURPOSE:To positively prevent an automobile from being stolen by bringing the seat back of a driver's seat down forward when the seat is detected to have been unattended and when doors are detected to have been locked, and thereby constituting the seat that it can be locked in a brought down forward condition. CONSTITUTION:When a driver gets off an automobile and when doors are closed, firstly a seat switch 41 detects that a seat 1 has been unattended so as to output a signal, and secondly a door lock detecting switch 51 detects that the doors have been locked so as to output another signal. Then, a control device 60 allows actuating signals to be outputted after time more than a specified one (roughly 10 seconds) has elapsed since both of the signals have been inputted. The actuating signals allow a clutch type motor 12 to be operated so as to let both a holding member 9 and a locking member 10 which are meshed with a pinion 33 be moved downward. This permits both engagement between a pawl section 26 and an engaging section 18 and engagement between a pawl section 29 and a segment gear 14 to be released so that a seat back 3 is brought down forward, which situation permits the pawl section of a cylinder lock 34 to be engaged with a locking piece 15 so as to be locked.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to an anti-theft device for an automobile.

(Prior Art) Conventionally, as an anti-theft device for an automobile, there is one in which a reclining device for a driver's seat is provided with a locking means for locking the seat back in a forward position with a key. In other words, by leaving the driver's seat, tilting the seat back forward using the reclining device, and locking the seat back so that it does not return, it is possible for a third party (to destroy or release the door lock and enter the vehicle to prevent the driver from driving). This prevents theft by preventing people from sitting on their seats.

(Problem to be Solved by the Invention) However, in the conventional theft prevention device, the reclining device must be locked by the locking means every time the driver leaves the driver's seat, and the door must be locked after the door is closed. The operation was time consuming. For this reason, the locking operation is complicated, and the reclining device is often forgotten to be locked, resulting in the problem that the anti-theft device may not be used.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an anti-theft device for an automobile that is activated simply by locking the door.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a seat sensor that detects that no one is sitting in the driver's seat, a lock detection sensor that detects that the door is locked, a control means for outputting an operation signal based on detection signals from both the seat sensor and the lock detection sensor; a seatback tilting means for turning on the seatback of the driver's seat based on the operation signal of the control means; A locking means for locking the seat back in the forward position.

(Function) When the door is not locked even after leaving the driver's seat, the seat sensor detects that no one is sitting and outputs a detection signal, but the lock detection sensor outputs a detection signal because the door is not locked. No output.

As a result, the control means receives a detection signal only from the seat sensor and does not output an operation signal to the seatback tilting means, so the seatback tilting means and the locking means do not operate.

When the door is locked by operating the inner lock knob etc. of the door while sitting in the driver's seat, the lock detection sensor detects that the door is locked and outputs a detection signal, but the seat sensor detects that the door is locked and outputs a detection signal. Therefore, no detection signal is output. As a result, the control means does not receive the detection signal from the lock detection sensor 5 and does not output an operation signal, so the seat back tilting means and the locking means do not operate as described above.

When you leave the driver's seat and lock the door, the seat sensor detects that no one is sitting and outputs a detection signal; Output. As a result, the control means receives detection signals from both the seat sensor and the lock detection sensor, and outputs an operation signal to the seatback tilting means, so that the seatback tilting means moves the notebook back in the driver's seat forward based on this operation signal. The locking means locks the seat back in the forward position.

(Example) Next, embodiments of the present invention will be described with reference to the accompanying drawings.

i) First Embodiment FIG. 1 shows a seat 1 on the driver's side of an automobile equipped with an anti-theft device according to a first embodiment of the present invention, 2 is a seat bottom, 3 is a headrest 4 at the upper end. The seat back is rotatable around support shafts 5 (the other side is shown as U and Z) provided on both sides of the rear end of the seat back.

Of the support shafts 5 on both sides (the other side is not shown), one support shaft 5 is connected to a knuckle frame 6 fixed to a seat bottom frame (not shown) and a sword pad (not shown) because a reclining device is attached to this part.・The reclining adjuster frame 7 is rotatably connected to the reclining adjuster frame 7 fixed to the frame.

The knuckle frame 6 roughly includes a reclining shaft stiff 1 node 7, a stop lever 8, a holding member 9, a locking member 10, and a reclining lever 11.
, a clutch type motor 12, and a knuckle cover 13 are attached.

As described above, the reclining adjuster frame 7 is fixed to a seat back frame (not shown), and is rotatably supported by the knuckle frames 1 and 6 by the support shaft 5. As shown in FIG. 2, this reclining azimuth frame 7 has a segment gear 14 at an arc-shaped end with the support shaft 5 as the center. A locking piece 15 is provided at the end which is bent approximately 180 degrees from the center and is cut up to the plane of the paper in FIG. Then, one end is connected to the support shaft 5,
The other end is locked to the IL piece 15, and the spiral return spring 1G biases the reclining adjuster frame 7 counterclockwise in FIG. ing. Further, at the position where the seat back 3 is tilted forward by a certain fi 1 degree, the locking piece 15 of the reclining adjuster frame 7 comes into contact with the abutment part 19 of the sliding stop 1 collar 8, which will be described later, and the tip of the return spring 16 is brought into contact with the knuckle flange. - It comes into contact with a stopper 17 protruding at 80°.

The stop lever 8 is rotatably provided coaxially with the support shaft 5 of the front single-load reclining adjuster frame 7, and has an engaging portion 18 that engages with a claw portion 26 of a holding member 9, which will be described later, and the reclining adjuster frame. The contact part that comes into contact with the locking piece I5 of No. 7! 9 is formed. The stop lever 8 is biased clockwise in FIG. 2 by the coil spring 20, and comes into contact with a stopper 21 protruding from the knuckle frame 6, so that the engaging portion 18 engages with a claw portion of the holding member 9, which will be described later. It is stopped in a state where it can engage with 2G.

As shown in FIG. 3, the holding member 9 is formed by bending both ends of a rectangular plate to form guide edges 22, 22, - a rack 23 is provided on the outside of the force guide #R22, and the other guide Edge 2
A notch 24 is formed in a part of the guide edge 22, and a stopper part 25 and a claw part 26 are protruded from the upper end thereof, and a notch part 27 is formed in a part of the stopper part 25. It has been established.

As shown in FIG. 3, the locking member 10 is a rectangular plate that is slidably housed between the guide edges 22, 22 of the holding member 9. A notch portion 28 is formed, and a claw portion 29 protruding from the notch portion 27 of the holding member 9 and engaging with the segment gear 14 of the reclining adjuster frame 7 is provided at the upper end.

As shown in FIG. 2, the holding member 9 that accommodates the locking member 10 is assembled so as to be slidable in the vertical direction by guides 30a, 30b30c protruding from the knuckle frame 6 by cutting and bending. When the claw part 26 of the holding member 9 engages with the engaging part 18 of the stop lever 8 at the position nI7, the claw part 29 of the a book member 10
It is adapted to engage with the segment gear 14 of the inning adjuster frame 7.

Reclining lever 1! is pivotally supported on the knuckle frame 6 by a support shaft 31, and its tip is connected to the notch 2 of the holding member 9.
It is attached so that it fits inward from 4 and engages with the notch 28 of the locking member IO. It is biased counterclockwise in the figure by a coil spring 32.

The clutch type motor 12 is attached to the knuckle frame 6 and includes a pinion 33 that meshes with the rack 23 of the holding member 9 and a one-way latch (not shown). This clutch type motor 12 is controlled by a control device 6, which will be described later.
0, rotates counterclockwise in FIG. 2 and slides the holding member 9 and the locking member 10 housed in the holding member 9 downward, and when not receiving the operation signal. , it is free to rotate only in the clockwise direction.

As shown in FIG. 1, the knuckle cover 13 covers the knuckle frame 6 to which the reclining adjuster frame 7, stop lever 8, etc. are attached, and a cylinder lock 34 is attached thereto. As shown in FIGS. 4 and 5, this cylinder lock 34 has a claw portion 35 which is biased in an axial direction and can be moved back by key operation. The cylinder lock 34 has its claw portion 35 located at a position a short distance away from the abutting position PiS+9 of the stop lever 8 in the stopped state in the counterclockwise direction of 31 degrees in FIG. , the locking piece of the climbing adjuster frame with the inclined surface of the claw part 35! 5 are attached so as to face each other.

On the other hand, as shown in FIG.
The door lock device 50 is provided with a door lock detection sensor 5 for detecting that the door is locked! is provided. Detection signals from the seat sensor 41 and the door lock detection sensor 51 are sent to the control device 60.

The control device 60 is configured to rotate the latch motor 12 counterclockwise in the figure for a certain period of time based on detection signals from both the seat sensor 41 and the door detection sensor 7.

That is, when the seat sensor 41 detects that no one is sitting and the door lock detection sensor 7 detects that the door is locked, the clubge type motor 12 is rotated counterclockwise for a certain period of time. .

Although not specifically shown, the control device 60 is equipped with a timer circuit that operates when the detection signal from the seat sensor 41 continues for 10 seconds or more. Even if it detects that something is missing, it does not respond by tapping, so the driver straightens up inside the car after locking the door, or puts something in the back seat. 1
Therefore, if the user leaves the seat for a short period of time, the seatback is designed to prevent it from falling down before the seat back is fully compressed.

In the seat 1 consisting of the above +1, roughly the reclining adjuster frame 7, the stop lever 8,
Holding member 9, locking member 10 and reclining lever I! A reclining device is configured. In addition, the reclining adjuster frame 7, the retainer member 9, the locking member 10, the clutch motor 12, and the return spring 16 constitute the seat back tilting means of the anti-theft device. Locking piece! 5 and cylinder lock 3
The claw portion 35 of No. 4 constitutes a locking means.

First, let's talk about the reclining movement.

Since the reclining device is normally operated while sitting on the seat 1, the seat sensor 41 does not output a detection signal.

Therefore, during the reclining operation, the control device 6
0, even if it receives a detection signal from the door lock detection sensor 51, it does not receive a detection signal from the seat sensor →'J-41 and does not output an operation signal to the clutch type motor 12, so the anti-theft device does not operate.

When the reclining lever 11 is not operated, as shown in FIG. 2, the reclining lever 11 is biased counterclockwise in the figure by the coil spring 32 and pushes the locking member IO upward in the figure, so that the reclining lever 11 is locked. The claw portion 29 of the member 10 and the segment gear 14 of the reclining adjuster frame 7 are engaged to prevent the reclining adjuster frame 7 from rotating, and the seat back 3 cannot be tilted forward or backward.

Further, the holding member 9 is pushed upward in the figure as the upper end of the locking member 10 comes into contact with the stopper portion 25,
The claw portion 26 is stopped in a state where it is engaged with the engaging portion 18 of the stop lever 8.

When the reclining lever II is pulled up, as shown in FIG.
1: (locked) Press down the merging material IO. At this time, the holding part (A9) is rotated counterclockwise by the rack 23.
It is engaged with the pinion 33 of the clutch type motor 12 which is not rotating in the positive direction, and does not move downward together with the lock member 1O, so that the claw part 26 and the engaging part I8 of the lock lever 8 are engaged with each other. The engaged state is maintained.

[When the knock member IO is pushed down, the lock part RIO
The claw portion 29 of the reclining adjuster frame 7 is disengaged from the segment gear 14 of the reclining adjuster frame 7, and the reclining adjuster frame 7 is rotated counterclockwise in the figure by the biasing force of the return spring 16. If the person is not sitting in seat 1 (or if the person is sitting in seat back 3)
If you do not support the stop lever 11 with your hand, the locking piece 15 will stop the stop lever 11.
It comes into contact with the contact part 19 of. At this time, stop lever 1
Since the engaging portion 18 on the other side 1 engages with the claw portion 26 of the holding member 9 and is prevented from rotating counterclockwise in the figure, the reclining adjuster frame 7 stops at the position.

After pulling up the reclining lever 11, tilt the seatback 3 backward while sitting on the seat 1, or pull it down by hand until it is properly tilted, then move the reclining lever 11 to the coil spring 32. When it returns to its original position due to force, the claw portion 29 of the locking member 10 engages with the segment gear 14 of the reclining adjuster frame 7, and the reclining adjuster frame 7
is fixed at that position.

Next, the operation of the anti-theft device will be explained.

When you leave the sheet I in the normal state shown in Figure 2,
The seat switch 4I detects that no one is sitting on the seat 1 and outputs a signal (2, the detection signal is sent to the control means 60
is input. Then, when the door is closed and locked, the door lock detection switch 5! detects that the door is locked and outputs a signal, and the detection signal is input to the control device 60.

The control device 60 receives detection signals from both the seat switch 41 and the door lock detection switch 51. And seat switch 4! If 10 seconds or more have elapsed since receiving the detection signal from the control device 60, the control device 60 outputs an operation signal at this time, and if 10 seconds or more has not elapsed since then, the control device 60 outputs an operation signal. Based on this operating signal, the clutch type motor I2 rotates counterclockwise in FIG. 2 for a certain period of time. As a result, the holding member 9 that meshes with the pinion 33 of the clutch motor 12 moves downward in the figure, as shown in FIG. ) and moves downward in the figure. At this time, the reclining lever 11 that engages with the lock member 10 tilts clockwise as shown in the figure against the biasing force of the coil spring 32.

When the holding member 9 and the locking member 10 move downward in FIG. 7, the claw portion 26 of the holding member 9 and the stop lever 8
and the claw portion 29 of the locking member 10.
And reclining adjuster frame 7 segment gear! Disengage from 4. As a result, the reclining adjuster frame 7 rotates counterclockwise in FIG. Stopper 1 at the tip
7.

At this time, as described above, the engaging portion 18 of the stop lever 8
Since the engagement with the claw portion 26 of the holding member 9 is released, the reclining adjuster frame 7 that has come into contact with the contact portion 18 of the stop lever 8 moves the stop lever 8 with the coil spring 20 due to its inertia. It rotates as a unit while being pressed counterclockwise in the figure against the force.

As shown in FIG. 5, the locking piece I5 of the reclining adjuster frame 7
Pressing the inclined surface of and passing through the claw part 35 while retreating,
When the inertial force and the biasing force of the coil spring 20 are balanced and the inertial force disappears, the biasing force of the coil spring 20 causes the rotation clockwise in FIG. 7. However, the locking piece 1
5 passes, the claw portion 35 of the cylinder lock 34 protrudes due to its biasing force, so that the locking piece +5 of the reclining adjuster frame 7 is engaged with the claw portion 35, and the reclining adjuster frame 7 is closed as shown in FIG. Rotation in the clockwise direction is prevented at . As a result, the seat back 3 cannot be erected again and becomes locked.

Therefore, in this locked state, even if a third party were to enter the vehicle by unauthorized means other than the key, he or she would not be able to drive because the seatback 3 is tilted forward and he or she cannot sit on the seat 1. IT theft is prevented.

On the other hand, the holding member 9 and the locking member 10 that have been moved downward by the crudging motor are not tilted because the crudging motor 12 is free to rotate in the direction S1 when the crudging motor 12 stops after a certain period of time. The holding member 9 is pushed upward by the biasing force of the coil spring 32 of the reclining lever II, and stops with the tip of the claw portion 2G of the holding member 9 in contact with the end of the stop lever 8.

To unlock the seat I, use the key to unlock the door, open the door, insert the key into the cylinder lock 34 attached to the knuckle cover 13 and turn it, The claw portion 35 of the cylinder lock 34 may be moved back as shown in FIG. As a result, the locking piece between the claw portion 35 of the cylinder lock 34 and the reclining adjuster frame 7! 5, the seat back 3 can be pulled up by hand.

Here, when the seatback 3 is raised, the reclining adjuster frame 7 rotates clockwise in FIG. 7, but since the stop lever 8 is biased clockwise by the coil spring 20, this biasing force The contact portion I9 rotates clockwise together with the reclining adjuster frame 7 while remaining in contact with the locking piece of the reclining adjuster frame 7, and stops at the position where the stop lever 8 comes into contact with the stopper 21. At the same time, the claw part 26 of the holding member 9, which was in pressure contact with the end of the stop lever 8, partially engages with the engaging part 18 of the stop lever 8, and the tip of the claw part 29 of the locking member 100 reclines. It is pressed against the end of the adjuster frame 7.

Furthermore, when the seat back 3 was raised and the segment gear 14 of the reclining adjuster frame 7 came to a position facing the claw part 29 of the locking member 10, it was in pressure contact with the end of the reclining adjuster frame 7. The claw portion 29 of the member IO is the segment gear 1
4, the seat hack 3 is held in the raised position. By further operating and adjusting the reclining lever II, the reclining adjuster frame 7 returns to the state shown in FIG. 2.

) Second Embodiment FIG. 8 shows a portion of a reclining device for a Sea I. equipped with an anti-theft device according to a second embodiment of the present invention. This second embodiment is different from the first embodiment in that a second segment gear 72 is provided on the reclining adjuster frame 71, there is no stop lever 8, and a stopper bin 73 is provided in place of the stopper 17. , a lock bin 74 is provided in place of the solid cylinder lock 34 having the pawl portion 35 , a lock member 75 with a different structure is provided, and the clutch type motor 12 is replaced by the third! The motor 76 is provided with a second motor 77, and the door lock device 50 is provided with a door unlock detection sensor 52. Except for the provision of the key cylinder switch 53 and the operation of the control device 61, they are substantially the same, and corresponding parts are designated by the same numbers and their explanation will be omitted.

Reclining adjuster frame 7! The second segment gear 72 is at a different level from the first segment gear 14,
4- That is, in FIG. 8, it is formed at a position lower than the first segment gear 14 and close to the knuckle frame 6;
It is designed not to interfere with a claw portion 81 of a locking member 75, which will be described later. This second segment gear 72 is adapted to mesh with a binion 85 of a second motor 77, which will be described later. Further, the end portion of the second segment gear 72 in the clockwise direction of 91 in FIG. 8 is a locking portion 78 into which a lock bin 74, which will be described later, is locked.

The stopper pin 73 and the CI pick pin 7.4 are biased in a direction projecting perpendicularly to the surface of the knuckle frame 6 in FIG. 8, and are biased by a solenoid 79.80 attached to the back surface. It can be retracted to the back side against the

The stopper pin 73 can come into contact with the reclining adjuster frame 71 which is in the nf tilted state when the seven solenoids are off, and does not come into contact when the solenoid 79 is on.

[1] When the solenoid 80 is off and the seat hack 3 is in the normal adjustment range, the pusher pin 74 presses against the back surface of the reclining adjuster frame 71 in the pushed state, causing the seat back 3 to further tilt from the forward tilted state. (
When it is in the l'L position, it is released from the press contact state with the reclining adjuster frame 71, and is able to protrude by J due to the biasing force and come into contact with the locking portion 78 of the reclining adjuster frame 71. Further, when the solenoid 80 is on, the lock pin 74 does not come into contact with the part 78 of the engaging member 11, and also does not come into pressure contact with the reclining adjuster frame 7I.

The locking member 75 has a rectangular plate shape, and in FIG.
A claw portion 81 that engages with the first segment gear 14 of the notebook 71, a rack 82 that engages with a binion 84 of the first motor 76, which will be described later, on the right end, and a tip of the reclining lever 11 on the surface. An engaging portion 83 Ml,' is formed to engage with the engaging portion 83M. and,
The locking member 75 is guided by the guides 30a, 30b, and 30c, and is slid in the vertical direction in FIG. It can be detached freely.

The first motor 76 and the second motor 77 are connected to the knuckle frame 6
The first motor 76 is equipped with a rack 82 of the rotary member 75, and the second motor 77 is equipped with a pinion 84 and 85 that mesh with the second segment gear 72 of the reclining adjuster frame 71, respectively, and a control device to be described later. When it receives an operation signal from 61, it rotates counterclockwise in FIG. 8, and when it does not receive an operation signal from 61, it can freely rotate in any direction.

The door unlock detection sensor 52 is provided in the door lock device 50 together with the door lock detection sensor 51 to detect that the door is unlocked. The key cylinder switch 53 is provided on a key cylinder (not shown) and is configured to detect that the door has been legitimately unlocked with the key. Detection signals from the door unlock detection sensor 52 and the key cylinder switch 53 are input to the control device 61.

When the control device 61 receives detection signals from both the seat sensor 41 and the door lock detection sensor 51, the control device 61 controls the first motor 7.
6, turn on the stopper pin solenoid 79, and then turn on the door unlock detection sensor 51.
When a detection signal is received from the motor, the first motor 7G and the second motor 77 are rotated, and the lock pin solenoid 80 is turned on.

A sheet consisting of the above configuration! In general, the reclining adjuster frame 71, the locking member 75, and the reclining lever 1! and the stopper pin 73 constitute a reclining device. Also, roughly speaking, the reclining adjuster frame 71. otsuk member 75, first
The motor 7G and the return spring 16 constitute a seat back tilting means of the anti-theft device, and
Roughly speaking, the lock pin 74, the solenoid 80, and the locking portion 78 of the reclining adjuster frame 71 constitute a locking means.

First, we will explain the reclining operation.

Since the reclining device is normally operated while sitting on the seat 1, the seat sensor 41 outputs a detection signal.
As in the previous embodiment, the anti-theft device does not operate.

When the reclining lever 11 is not operated, as shown in FIG. 8, the reclining lever I+ is biased counterclockwise in the figure by the coil spring 32 and pushes the locking member 75 upward in the figure. The claw/portion 8I of 75 engages with the first segment gear I4 of the reclining adjuster frame 71, preventing rotation of the reclining adjuster frame 71, and the root pack 3 cannot be folded down after nQ.

When the reclining lever 11 is pulled up, the tip of the reclining lever 11 pushes down the locking member 10, so the claw portion 81 of the locking member IO disengages from the first segment gear I4 of the reclining adjuster frame 71, and the reclining adjuster frame 71 It rotates counterclockwise in the figure due to the biasing force of the return spring 16. At this time, if no one is sitting on the seat 1 or if the seat back 3 is not supported by hand, the locking portion 78 passes through the lock pin 74 and the reclining adjuster frame 71 touches the stopper pin 73. The seatback 3 should then come to rest in a forward position. Also, after pulling up the reclining lever 11,
While sitting on the chair, lean back or pull it by hand and return the reclining lever 11 to the position where the seat back 3 is at an appropriate angle.
The material 75 is straightened up, the claw portion 81 engages with the segment gear 14 of the reclining adjuster frame 7, and the seat back 3 is fixed at this position.

Next, theft prevention 11. ．． The operation of the device will be explained.

When you leave the seat 1 and lock the door, the sort switch 41 and the door rotor detection sensor 5 are activated as in the previous embodiment.
1 outputs a detection signal, and the detection signal is manually input to the control device 6I. The control device 61 receives detection signals from both the sort switch 711 and the door lock detection switch 51, and operates the first motor 76 and the stopper pin solenoid 7.
Outputs an operation signal to the Based on the operation signal, the first motor 76 rotates counterclockwise in FIG. 8 for a predetermined time, and the stopper bin solenoid 79 retracts the stopper bin 73 for a predetermined time.

As a result, the locking member 75 that engages with the pinion 84 of the first motor 76 moves downward in FIG.
As a result, the engagement with the first segment gear 14 is released,
The reclining adjuster frame 71 is rotated counterclockwise in FIG. 8 by the biasing force of the return spring 1G while its second segment gear 72 is engaged with the binion 85 of the second motor 77 which is in a freely rotatable state. . At this time, the stopper pin 79 is
9, the reclining adjuster frame rotates without being stopped by the 7 stopper pins, as shown in Figure 9. Then, when the locking portion 78 of the reclining adjuster frame 71 passes the hook pin 74, the hook pin 74 protrudes due to its biasing force.

As a result, the locking portion 78 of the reclining adjuster frame 7I locks with the corresponding lock pin 74 and is prevented from rotating in the clockwise direction, so the seat back 3 cannot be raised and is in a locked state. Therefore, in the locked state, L cannot be driven even if a third party enters the vehicle 111 by unauthorized means other than the key, as in the above-mentioned embodiment, so that the vehicle L is prevented from being stolen.

When the door is legitimately unlocked with the key, the door unlock detection sensor 52 and the key cylinder switch 53
detects this, and these detection signals are manually input to the control device 6I. The control device 61 receives detection signals from both the key cylinder switch 53 and the door unlock detection switch 52, and activates the lock bin solenoid 80. First motor 7
G and the second motor 77 . Based on this operation signal, the lock pin solenoid 80 causes the lock pin 74 to be retracted for a certain period of time, and the first motor 76 and the second
The motor 77 rotates counterclockwise in FIG. 9 for a certain period of time.

As a result, the lock member 75 that meshes with the pinion 84 of the first motor 76 moves downward in FIG. 9, and the teeth of the second segment gear 72 that meshes with the pinion 85 of the second motor 77 are moved. , the reclining adjuster frame 71 has its engaging portion 78 connected to the lock bin 74.
It rotates counterclockwise in FIG. 9 without being locked in the position. This and 3, Reclining Anoyastuff Shim 7
When I passes the stopper bin 73, the stopper bin 73 protrudes due to the pushing force and becomes in a state 73 capable of engaging with the reclining adjuster frame 7I. Further, when the solenoid 80 is offset after a certain period of time, the first pin 711 protrudes due to its urging force and comes into pressure contact with the back surface of the reclining adjuster frame 71, and the first motor 7G and the second motor 77 stop. When the locking member 75 becomes freely rotatable, the locking member 75 is pushed upward, and the claw portion 81 of the locking member 75 engages the first segment gear 14.
8, and returns to the normal state shown in FIG.

In addition, when the door is unlocked by a locking means other than the key, the door unlock detection sensor 52 outputs a detection signal, but the key cylinder switch 53 does not output a detection signal. The control device 61 does not output the operation signal, and the seat back 3 maintains the +if tilted state.
Theft is prevented.

Therefore, in the second embodiment, simply by unlocking the door with the key, the seat back 3, which was tilted forward to prevent theft, is automatically returned to its original state by the second motor 77. Unlike the first embodiment, there is no need to unlock the reclining device after knocking on the door, and the operation is simple.

(Effects of the Invention) As is clear from the following explanation, according to the present invention, simply by leaving the seat and locking the door, the seat back collapses and theft is prevented. There is no need to perform any operations, it is simple, and there is no need to forget to perform an operation, making it convenient.

[Brief explanation of the drawing]

Figures 1 to 7 do not show the first embodiment, so Figure 1 is a side view of the seat equipped with an anti-theft device, and Figure 2 is a front view of the seat reclining device with the seat back in its normal state. Figure 3 is an exploded perspective view of the locking member and the holding member;
Figure 4 is a sectional view taken along line I=1 in Figure 2, and Figure 5 is a cross-sectional view of Figure 7.
Figure 6 is a front view of the seat reclining device with the seat back tilted forward, and Figure 7 is a front view of the seat reclining device with the anti-theft device activated and locked. Figures 8 and 9 show the second embodiment. Figure 8 is a front view of the reclining device with the seat back in its normal state, and Figure 9 is a front view of the reclining device when the anti-theft device is activated and in the locked state. FIG. 2 is a front view of a reclining device for a certain seat. 7... Reclining adjuster frame, 8...
Stop lever 9... Holding member, 10... Lock member, 12... Clutch type motor, 16...
・Return spring, 34...Cylinder tJ, 41...Seat sensor, 5
1... Door lock detection sensor, 60... Control device. Patent slasher Nishin Co., Ltd. Figure 3 Figure 4

Claims (1)

[Claims] (1) Operates based on a seat sensor that detects that no one is sitting in the driver's seat, a lock detection sensor that detects that the door is locked, and detection signals from both the seat sensor and lock detection sensor. A control means for outputting a signal, a seatback tilting means for tilting a seatback of a driver's seat forward based on an operation signal of the control means, and a locking means for locking the seatback in a forwardly tilted position. An automobile theft prevention device characterized by: