JP2825188B2 - Key interlock device for automatic transmission - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

In the present invention, the engine start key cannot be removed by setting the cylinder lock to the lock position unless the shift lever is shifted to the parking range.
The present invention relates to a key interlock and a shift lock device in which a shift lever cannot be shifted to a traveling range side when an engine start key is removed.

[0002]

2. Description of the Related Art Conventionally, as a key interlock device,
Japanese Unexamined Utility Model Application Publication No. 64-46824 (hereinafter referred to as first prior art) and Japanese Patent Application Laid-Open No. 60-1353.
Japanese Unexamined Patent Publication No. 52 (hereinafter, referred to as a second prior art) is known.

According to the first prior art, when a shift lever is shifted to a parking range, the shift lever is engaged with a position pin and is moved in the other direction in conjunction with the position pin to be moved to a lock position. And a lock body that restrains the movable body at a lock position and locks a position pin in a lock recess. The lock body is connected to a key rotor of a cylinder lock by a cable. ing.

In a state where the shift lever is shifted to a travel range other than the parking range, even if the key rotor is to be rotated to the lock position, the rotation of the lock body is restricted by the movable body to be in the lock position. Also, if the shift lever is set to the parking range and the key rotor is rotated to the lock position, even if the push pin of the shift lever is pressed to push down the position pin, this is restricted by the lock body via the movable body, and the parking is stopped. Cannot shift out of range.

In the second prior art, a bell crank having a notch for engaging with a position pin when the shift lever is in a parking range is rotatably provided on a position plate, and the bell crank is connected to a cylinder via a cable. It is configured to be connected to the key rotor of the lock.

In the second prior art, when the shift lever is shifted to the parking range, the position pin engages with the notch of the bell crank and rotates in conjunction with sliding of the position pin. When the key rotor is rotated to the lock position in this state, the key rotor side end of the cable is locked, and even if the position pin is pushed down by the shift lever, the bell crank does not rotate, and the vehicle shifts from the parking range. Can not do.

[0007]

However, the above-mentioned prior art has the following problems.

In the first prior art, when the engine start key is turned to the ON side while the shift lever is shifted to a travel range other than the parking range, the rotation of the lock body is blocked by the movable body. In this case, the force applied to the engine start key is input to a transmission system such as a cable, which may cause the cable to elongate or damage the transmission system.

When the cable is stretched as described above, the worst case may cause the key interlock to be released.

On the other hand, in the second prior art, in a steering locked state (in a state where an engine start key is removed), when the push pin is pushed to lower the position pin to shift the shift lever from the parking range, the force is bellowed. The force is input to the side that rotates the crank, and the force is also input to a transmission system such as a cable.

In this case, as in the first prior art, there is a possibility that the cable may elongate or the transmission system may be damaged.

As described above, in the prior art, transmission of a cable or the like is performed when any of the key operation in the lock direction in the driving range and the operation of shifting from the parking range to another range when the steering is locked is performed. There has been a problem that the operation force is input to the system, which causes the cable to be stretched or the transmission system to be damaged.

The present invention has been made in view of the above-mentioned problem. In a key interlock device, a key operation in a lock direction in a travel range and a shift from a parking range when the steering is locked to another range are performed. An object of the present invention is to provide a device in which an operation force is not input to a transmission system such as a cable when any of the operations is performed.

[0014]

In order to achieve the above object, a key interlock device for an automatic transmission according to the present invention comprises:
An operating member and a stopper are interposed between the linkage and the lock body and between the linkage and the key rotor, respectively, so that the lock body and the key rotor are not directly linked to each other.

That is, the key interlock device of the automatic transmission according to the present invention does not allow the key rotor of the cylinder lock to be rotated to the lock position when the shift lever is in the travel range, and sets the key rotor to the lock position. In a key interlock device for an automatic transmission in which a shift lever cannot be shifted from a parking range, a lock body is provided on the shift lever, the lock body restricting sliding of a position pin in a direction of disengaging from a position plate. A position and an unlock position allowing the slide, the lock body is provided with first biasing means for biasing toward the unlock position, and the position pin is provided with a second biasing means. By the biasing means, the slide is biased in the direction of engagement with the position plate, When the parking range of the shift lever,
An operating member for moving the lock body from the unlock position to the lock position in association with the slide of the position pin by the second biasing means is provided on the vehicle body, and the operating member locks the lock body. A third urging means is provided for urging the movement in a direction opposite to the direction in which the second urging means is moved to the position, and the urging force of the second urging means is the first urging hand.
From the sum of the urging force of the step and the urging force of the third urging means
Is also set to a large force, and the cylinder lock is connected to an operating member via a linkage to restrict the rotation of the key rotor from the on position side to the lock position side, and allows the rotation of the key rotor. A stopper movable to an unlock position is provided, and the key rotor is provided with a restricting portion for restricting a movement of the stopper to the lock position when the key rotor is in the lock position.

[0016]

When the vehicle is parked, the shift lever is moved to the parking range. At this time, the position pin slides from the disengaged position to the engaged position by the second biasing means. Create dynamic member to the slide of the position pin is the third
The lock body is interlocked with the urging force of the urging means, and the lock body is moved to the first urging position.
It is moved from the unlocked position to the locked position against the urging force of the urging means .

In conjunction with the movement of the operating member, the stopper connected via the linkage moves to the unlock position, and the key rotor can rotate in the lock position direction.

Therefore, when the engine start key is operated and the key rotor is turned to the lock position, the engine start key can be pulled out, and the stopper moves to the lock position by the regulating portion of the key rotor. Be regulated.

In the parking state as described above, even if an attempt is made to shift the shift lever from the parking range, the sliding of the position pin in the disengagement direction is restricted by the lock body, so that the shift change cannot be performed. ing.

In this case, the operating force applied to the position pin in the disengagement direction against the urging force of the second urging means is received by the lock body and is not transmitted to an operating member separate from the lock body. . For this reason, this operation force is not input to the linkage, and it is possible to prevent a problem caused by inputting this operation force to the linkage.

The operating member is moved and urged by the third urging means. When the parking member is parked, the stopper of the cylinder lock which is linked to the operating member by the linkage is operated by the linkage.
Since the movement of the key rotor in the direction of the lock position is restricted by the restricting portion, the movement of the operating member is also restricted, whereby the movement of the lock body is also restricted.

When shifting the shift lever from the parking range to the travel range, the key rotor of the cylinder lock is turned from the lock position to the on position based on the operation of the engine start key.

Then, the restriction of the movement of the stopper by the restricting portion is released, and the stopper can be moved in the lock position direction, and at the same time, the operating member can also be moved.

In this state, when the position pin is slid in the direction of releasing the engagement with the position plate against the second urging means, the operating member is moved by the third urging force in conjunction therewith. In this way, since the urging force of the second urging means for moving and urging the lock body toward the lock position via the operating member is eliminated, the lock body is further moved to the first position.
To the unlock position by the urging force of the urging means.

Therefore, the restriction on the slide of the position pin is released, and the shift lever can be shifted from the parking range.

Next, when the shift lever is set to a range other than the parking range and the key rotor is rotated to the lock position by operating the engine start key, the stopper is located at the lock position. As a result, this rotation is restricted and locking is not possible.

In this case, the linkage is not directly connected to the key rotor, and the operating force applied to the key rotor is received by the stopper and is not transmitted to the linkage.

[0028]

Embodiments of the present invention will be described below with reference to the drawings.

First, the configuration will be described.

1 and 2 are side views showing a key interlock device according to a first embodiment of the present invention. FIG. 1 is a key lock state and a shift lock release state, and FIG. 2 is a shift lock state and a key lock release state. The state is shown.

In both figures, reference numeral 1 denotes a shift lever.

The shift lever 1 is supported on the vehicle body so as to swing about an axis A, and can shift to a parking range P, a reverse range R, a neutral range N, a drive range D, a second speed range, and a first speed range. Is formed. In this specification, hereinafter, ranges other than the parking range P are collectively referred to as a traveling range.

A position pin 11 is provided on the shift lever 1 so as to be slidable up and down along a slide groove 12, and an engagement pin formed on a position plate 2 provided on the side of the shift lever 1. It can be engaged with and released from the groove 21.

The position pin 11 can be slid up and down by operating a push button (not shown) provided above the shift lever 1. The position pin 11 is urged upward by a second urging means (not shown) to engage with the engagement groove 21.

Next, 3 is a bush as a lock body. The bush 3 is rotatable on the outer periphery of the shift lever 1 around the center axis of the shift lever 1 in the circumferential direction, and the movement of the shift lever 1 in the central axis extending direction is restricted.

The bush 3 has a guide groove 3
When the guide groove 31 is disposed at the unlock position (FIG. 1) where the position of the guide groove 31 matches the position of the slide groove 12, the position pin 11 is allowed to slide downward, and the two do not match. When it is located at the lock position (FIG. 2), it restricts downward sliding of the position pin 11.

On the outer periphery of the bush 3, an engagement arm 32 and a connecting portion 33 are formed so as to protrude in the radial direction. At the tip of the connecting portion 33, a solenoid 4 attached to the shift lever 1 by a bracket 42 is provided. Plungers 41 are connected.

That is, the movement of the bush 3 between the locked position and the unlocked position is performed by the solenoid 4 as the first urging means. When the solenoid 4 is not excited, the inside of the solenoid 4 is not shown. The plunger 41 is protruded by the omitted biasing force of the spring, and the bush 3 is disposed at the unlock position. On the other hand, solenoid 4
In the excited state, the plunger 41 is retracted, and the bush 3 is located at the lock position.

The solenoid 4 is excited by the controller 5.
From the drive signal s.

That is, the controller 5 includes an ignition switch 51 (the engine start key is turned on when the engine start key is turned on), a detent switch (turned on when the shift lever 1 is shifted to the parking range P) 52 and a brake switch (brake). Is turned on when the user depresses the brake pedal), and even if the detent switch 52 is on and the ignition switch 51 is on, the brake-depressed state is not detected (the brake switch OF).
F), and outputs a drive signal s arranged a bush 3 solenoid 4 as energized when in the locked position, the shift lever 1
When the brake is depressed, the output of the drive signal s is stopped, the solenoid 4 is de - energized, and the internal spring is stopped.
The bush 3 is moved to the unlock position by the urging force of the gear, so that the shift lever 1 can be moved to the traveling range side.

An operating member 6 is provided near the shift lever 1 disposed in the parking range P.

[0042] The actuating member 6 is pivotally mounted about a pin 64 to the vehicle body, a first arm 61 connected to a cable 7 which is pushed and pulled can be formed as a linkage, and the position pin 11 It has a second arm 62 that can be engaged, and a third arm 63 whose tip can contact the engaging arm 32 of the bush 3. As shown in FIG. ) 65 urges the lower side of the second arm 62 to rotate (counterclockwise) in a direction in which it comes into contact with the stopper 66.

[0043] That is, the third biasing means, moving the third arm 63 is not made contact with the engaging arm 32 of the bush 3, in the opposite direction to the direction of moving the bush 3 to lock position location It is to energize.

That is, in this specification, the position at which the operating member 6 is restricted in rotation by the stopper 66 is referred to as a traveling position. When the operating member 6 is disposed at this traveling position, the shift lever 1 is moved to the parking range P. When the shift is made, the position pin 11 that slides upward is engaged with the lower side of the second arm 62.

Then, the urging force of the return spring 65
And the first biasing means built into the solenoid 4
The combined force of all the springs is set to be weaker than the force of an unillustrated spring as second biasing means built in the shift lever 1 that operates to push the position pin 11 upward. As a result, when the position pin 11 slides upward, the operating member 6
But the bush 3 is rotated clockwise as shown in FIG. 2
Moves to the lock position shown in the figure.
The indicated position is referred to as a parking position in this specification.

The operating member 6 is connected to a stopper 81 of the cylinder lock 8 via a cable 7.

That is, the cylinder lock 8 is disclosed in, for example,
A key rotor 83 which is turned by inserting and turning an engine start key (not shown) is provided inside the cylinder case 82. ing. The key rotor 83 can be inserted and removed by operating an engine start key, and a lock position LK for locking the steering wheel and an accessory position AC where the engine is stopped but electric components can be used.
C, ON position ON where the engine is driving,
The engine can be turned to a start position ST for starting the engine.

The stopper 81 is supported so as to be rotatable about a pin 811. When the operating member 6 is in the running position (FIG. 1), the stopper 81 is pulled by the cable 7 to the locked position. In this position, the claw portion 84 of the stopper 81 engages with the protrusion 85 formed on the key rotor 83 at this position, thereby restricting the key rotor 83 from rotating from the accessory position ACC to the lock position LK. .

Meanwhile, when the actuating member 6 is in the parking position location A stopper 81 is pushed to the cable 7 is placed in the unlocked position in which the pawl portion 8 of the stopper 81
Numeral 4 is disposed outside the cylinder case 82 so that the key rotor 83 can rotate to the lock position LK.

The protrusion 85 of the key rotor 83
Is located at a position corresponding to the tip of the claw portion 84 of the stopper 81 when in the lock position LK.
Restricts rotation to the lock position shown in FIG. 1, and corresponds to a restricting portion in the claims.

Next, the operation of the embodiment will be described.

(A) During parking (locked state) When parking with the shift lever 1 set to the parking range P and the engine start key removed from the cylinder lock 8, as shown in FIG. , The bush 3 is located at the lock position, the stopper 81 is rotated to the unlock position, and the tip of the claw portion 84 of the stopper 81 is located at the tip of the key rotor 83. A portion 85 is provided to restrict the rotation of the stopper 81 in the lock position direction.

Therefore, when the position pin 11 is to be slid downward to perform the parking release operation of the shift lever 1 in this state, the urging force of the return spring 65 is interlocked with the downward slide of the position pin 11. The operating member 6 tries to rotate in the traveling position direction,
In the cylinder lock 8, the rotation of the stopper 81 is
, The operating member 6 is connected to the cable 7.
Cannot be pulled, the rotation of the operating member 6 is restricted. For this reason, the bush 3 is held at the lock position, and the downward sliding of the position pin 11 is restricted by the bush 3 so that it is not possible to shift from the parking range P to the traveling range.

At this time, the operating force applied to the position pin 11 is supported by the bush 3 and the shift lever 1, and is not input to the cable 7 via the operating member 6.

For this reason, there is a problem that the operating force to shift from the parking range P is input to the cable 7, that is, the cable 7 is stretched or a transmission system such as a bracket supporting the cable 7 is damaged. Will not occur.

(B) Start of Traveling When traveling is to be performed, first, the engine start key is inserted into the cylinder lock 8, and the key rotor 83 is turned in the on-position direction.

As a result, the projection 85 is displaced from the position of the claw portion 84 of the stopper 81, and the stopper 81 can rotate to the lock position, and the rotation of the operating member 6 to the running position is released.

Therefore, when the position pin 11 is slid downward, the return spring 65
Until the actuating member 6 is regulated by the stopper 66 by the urging force, that is, to the running position shown in FIG.
The bush 3 is rotated to the unlock position by the urging force of a spring (not shown) built in the solenoid 4,
The position pin 11 can slide from the parking range P to the traveling range by sliding downward in the guide groove 31.

When the brake is not depressed at this time, a drive signal s is output from the controller 5 to the solenoid 4, the bush 3 is maintained at the lock position, and the downward sliding of the position pin 11 is restricted.

(C) Traveling When the vehicle is traveling with the shift lever 1 shifted to the traveling range, the operating member 6 is arranged at the traveling position shown in FIG. It is located at the lock position.

Therefore, when the engine start key is turned to rotate the key rotor 83 to the lock position LK, the projection 85 of the key rotor 83 is engaged with the claw 84, and the position of the key rotor 83 is higher than that of the accessory position ACC. It cannot be turned to the lock position LK side.

Thus, the engine can be stopped, but the engine start key cannot be removed as the lock position LK.

When the engine start key is rotated in this manner, the operation force input to the key rotor 83 is supported by the stopper 81 and is not transmitted to the cable 7.

Therefore, there is no problem that this operation force is input to the cable 7.

(D) During parking To remove the engine start key from the above state, the shift lever 1 is shifted to the parking range P. Then, the position pin 11 is moved to the operating member 6 located at the traveling position.
Of the second arm 62 and engages, and the operation member 6 is moved to the parking position by sliding the position pin 11 upward upon completion of the shift operation.

In conjunction with this, the stopper 81 is pushed by the cable 7 to move to the unlock position, and the key rotor 8
3 can be turned to the locked position, and in conjunction with the turning of the operating member 6 to the parking position, the bush 3 which has been arranged at the unlocked position by the spring built in the solenoid 4 until then is The engaging arm 32 is moved to the third position of the operating member 6.
The arm 63 is pushed by the tip of the arm 63 to rotate to the lock position, so that the position pin 11 is restricted from sliding downward as described above.

As described above, in the key interlock device of the first embodiment, when the position pin 11 is slid downward with the engine start key removed, the shift lever 1 is also driven. Even if the engine start key is turned to the lock position LK side while shifting to the range, the load is not input to the cable 7 and the cable 7 is extended or the transmission system including the cable 7 is damaged. Is obtained.

In this embodiment, the position pins 11
Bush 3 as a lock body that regulates downward sliding
Is shared with the lock body of the shift lock device that restricts the shift from the parking range when the brake is not depressed, so that the number of parts can be reduced correspondingly and the device can be simplified.

Further, in this embodiment, the solenoid 4 is
Since the bush 3 is arranged in the locked position when energized and the bush 3 is arranged in the unlocked position when not energized, the bush 3 is arranged in the unlocked position when the electric system fails. In such a failure, an effect is obtained that a mechanism for releasing the locked state by the bush (lock body) 3 becomes unnecessary.

Next, a second embodiment and a third embodiment of the present invention will be described. In describing these embodiments, the same components as those in the first embodiment will be denoted by the same reference numerals as those in the first embodiment, and description thereof will be omitted. Only different points will be described.
In addition, only the difference between the first embodiment and the operation will be described.

The second embodiment shown in FIG. 3 is an example in which a lever 203 rotatably attached to the shift lever 1 is used as a lock body.

That is, the lever 203 is attached to the shift lever 1 by the pin 231 so as to be rotatable between a lock position shown by a solid line and an unlock position shown by an imaginary line.
The pin 231 is disposed on an extension of the slide axis of the position pin 11. The upper surface of the lever 203 is a stopper surface 232, which is formed so as to vertically face the position pin 11 at the lock position shown in the drawing.

On the other hand, the lower end of the lever 203 is connected to the plunger 41 of the solenoid 4.

As in the case of the first embodiment, the solenoid 4 pushes the plunger 41 out of the
03 in the unlock position, and conversely, in the excited state,
The plunger 41 is retracted, and the lever 203 is arranged at the lock position.

The distal end of the third arm 63 of the operating member 6 is in contact with the side surface (the front surface of the vehicle) of the lever 203.

Next, a third embodiment of the present invention shown in FIG. 4 will be described. The third embodiment differs from the first embodiment in the bush 303 and the operating member 306.

That is, on the lower surface of the bush 303, a cam surface 331 which is an inclined surface is formed.

An operating member 306 having a substantially U-shape with its lower end in contact with the cam surface 331 is provided.

The operating member 306 is supported slidably up and down by a guide 361 provided on the vehicle body, and is urged downward by a return spring 365 as third urging means. And the upper flange 362
Are connected to the cable 7.

Therefore, in the case of the third embodiment, when the position pin slides upward, the operating member 306 slides upward in conjunction therewith, and the lower end of the operating member 306 comes into contact with the cam surface 331 and the bush 303 Is restricted from rotating toward the unlock position.

Although the embodiment has been described with reference to the drawings, the specific structure is not limited to this embodiment. For example, in the embodiment, the solenoid 4 is shown as the first urging means. An elastic body such as a spring biasing in the unlocking direction may be used.

Further, in this embodiment, the lock body is shared with the lock body of the shift lock device for preventing the shift from the parking range to the travel range unless the brake is depressed. In this case, the effect that the number of parts can be reduced and the structure can be simplified can be obtained, but a lock body dedicated to the key interlock device may be provided.

By the way, the lock body of the shift lock device normally prevents the shift to another range unless the brake is depressed even in the neutral range.
If the lock body is provided on the shift lever as in the present embodiment, it is not necessary to separately provide a lock body for locking in the neutral range, and this can also simplify the device.

[0084]

As described above, in the key interlock device of the present invention, the lock member is provided on the shift lever, and the operating member for operating the lock member to the lock position and the unlock position is the lock member. In addition, provided on the vehicle body as a separate body, on the other hand, also in the cylinder lock, provided with a stopper to regulate the rotation of the key rotor separately from the key rotor,
Since the stopper and the operating member are connected by a linkage, when the position pin is operated in the disengagement direction with the key rotor in the lock position, this operating force is not input to the linkage and the shift lever is moved. Even when the key rotor is operated to rotate in the lock position direction in the driving range, the operation force is not input to the linkage, so that the linkage is unlikely to be stretched or damaged. The effect is obtained.

[Brief description of the drawings]

FIG. 1 is a side view showing a key interlock device according to a first embodiment of the present invention.

FIG. 2 is a side view showing the key interlock device according to the first embodiment of the present invention.

FIG. 3 is a side view showing a key interlock device according to a second embodiment of the present invention.

FIG. 4 is a side view showing a key interlock device according to a third embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 1 shift lever 11 position pin 2 position plate 3 bush (lock body) 4 solenoid (first biasing means) 6 operating member 65 return spring (third biasing means) 8 cylinder lock 81 stopper 83 key rotor 85 protrusion ( Regulating part) 203 lever (lock body) 303 bush (lock body) 306 operating member 365 return spring (second biasing means)

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Naoyuki Yamazaki 200-2-301 Kokubu, Ebina-shi, Kanagawa Prefecture (72) Inventor Hiroshi Yamazaki 1-14-7 Maruyama, Isogo-ku, Yokohama-shi, Kanagawa Prefecture Oi Works ( 72) Inventor Takumi Watanabe 1-14-7 Maruyama, Isogo-ku, Yokohama-shi, Kanagawa Prefecture Inside the Oi Works Co., Ltd. Person Satoshi Kobayashi 2 Takara-cho, Kanagawa-ku, Yokohama-shi, Kanagawa Nissan Motor Co., Ltd. (56) References Japanese Utility Model 2-92325 (JP, U) Japanese Utility Model 1-128424 (JP, U) (58) Field (Int.Cl. ⁶ , DB name) B60K 20/00-20/08 F16H 59/00-59/12

Claims (1)

(57) [Claims] When the shift lever is in the travel range, the key rotor of the cylinder lock cannot be turned to the lock position, and when the key rotor is in the lock position, the shift lever cannot be shifted from the parking range. In the key interlock device of the automatic transmission, the shift lever has a lock body that is provided with a lock position for restricting slide of a position pin in a direction of disengaging the position pin from a position plate, and an unlock position for allowing the slide. A first member that is movably provided, and that urges the lock body toward an unlock position.
The position pin is slid by the second urging means in a direction in which the position pin is engaged with the position plate. When the shift lever is set to the parking range, the second urging means is provided. An operation member for moving the lock body from the unlock position to the lock position in association with the sliding of the position pin by the urging means is provided on the vehicle body, and the operation member has a direction for moving the lock body to the lock position. A third biasing means for moving and biasing in the opposite direction to the first biasing means, wherein the biasing force of the second biasing means is equal to that of the first biasing means.
Greater than the sum of the urging force and the urging force of the third urging means
The cylinder lock is connected to an actuating member via a linkage to restrict the rotation of the key rotor from the on position side to the lock position side, and allows the key rotor to rotate. A key interlock device comprising: a stopper movable to an unlock position; and a restricting portion for restricting movement of the stopper to the lock position when the key rotor is in the lock position.