JPH08303562A - Shift lever device for automatic transmission - Google Patents

Abstract

PURPOSE: To surely prevent a vehicle from starting when an ignition key is on an inappropriate position, and surely prevent the ignition key from slipping out of a key cylinder when a shift lever is in the range except the P range. CONSTITUTION: When a shift lever is in the P range and an ignition key is except in the ON position of a key cylinder 24, a lock lever 30 can be engaged with the cam part 25 of the key cylinder 24 in the moving direction of a first cable 20. When the shift lever is shifted to the range except the P range, the lock lever 30 is positioned in a position capable of being engaged with the cam part 25 of the key cylinder 24 in the rotationally moving direction by movement of a cable end 26. When the ignition key is rotated toward the LOCK position under this condition, the lock lever 30 engaging with the cam part 25 is brought into contact with a stopper 40, and hence movement of the ignition key to the LOCK position is obstructed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shift lever device for an automatic transmission which performs shift lock and key interlock using a cable.

[0002]

2. Description of the Related Art In a vehicle, a shift lock mechanism is employed to prevent an erroneous operation of a shift lever when starting. As an example of the shift lock mechanism, there is known a technique of releasing the shift lock of the shift lever by energizing the solenoid when the brake pedal is depressed with the shift lever being shifted to the parking range (P range).
Further, a shift lock mechanism using a cable interlocked with the movement of the shift lever is also known.

Further, the shift lever device is provided with a key interlock mechanism that prevents the ignition key from being turned to the LOCK position of the key cylinder unless the shift lever is returned to the P range. Prevents the ignition key from coming off the key cylinder. In a shift lever device having both a shift lock mechanism and a key interlock mechanism, when the ignition key is not in the LOCK position of the key cylinder, the shift lever cannot be shifted to a position other than the P range, but the brake pedal is depressed. There are those that allow the shift operation of the shift lever to a position other than the P range.

[0004]

However, the conventional shift lever device having the shift lock mechanism and the key interlock mechanism has the following problems. The shift lever is P
If the brake pedal is depressed while the vehicle is in the range and the ignition key is in the ACC position, the shift lever can be shifted to another range, and if the engine is subsequently started, the vehicle will start moving. .
Therefore, when the shift lever is in the P range and the ignition key is in an inappropriate position, it is desired to develop a shift lever device that can prevent the shift operation from the P range even when the brake pedal is depressed.

An object of the present invention is to reliably prevent the vehicle from starting when the ignition key is in an improper position and to prevent the ignition key from the key cylinder when the shift lever is in a range other than the P range. An object of the present invention is to provide a shift lever device for an automatic transmission, which can surely prevent coming off.

[0006]

The shift lever device for an automatic transmission according to the present invention which achieves this object is as follows. A first cable movable in the axial direction by a shift operation of a shift lever, a cable end attached to one end of the first cable and movable only in the axial direction by the first cable, and the vicinity of the cable end And a key cylinder having a cam portion rotatable about an axis by operating an ignition key and the cable end rotatably supported about the axis, and the shift lever is in the P range and the ignition is on. When the key is not in the ON position of the key cylinder, it can be engaged with the cam portion of the key cylinder in the moving direction of the first cable, and when the shift lever is in a range other than the P range, the cable end is moved. The lock lever positioned so as to engage with the cam portion of the key cylinder in the rotation direction by the shift lever and the shift lever. It is in a range other than the range and when the lock lever rotates a predetermined amount due to the engagement of the cam with the operation of the ignition key in the rotating direction, it abuts the lock lever and prevents the ignition key from moving to the LOCK position. And a brake lock pedal, which is connected to the brake pedal through a second cable, releases the shift lock by depressing the brake pedal, and allows the shift lever located in the P range to perform a shift operation to a position other than the P range. A shift lever device for an automatic transmission, comprising:

[0007]

In the shift lever device for an automatic transmission according to the present invention, when the shift lever is in the P range and the ignition key is not in the ON position of the key cylinder, the lock lever and the cam portion move the first cable. Since it can be engaged in the direction, when trying to shift the shift lever to a range other than the P range, the lock lever contacts the cam portion as the cable end moves, and the shift lever shifts to a range other than the P range. Operation becomes impossible. Therefore, when the shift lever is in the P range and the ignition key is in the ACC position, it is impossible to shift the shift lever from the P range to another range even if the brake pedal is depressed, and the vehicle may be erroneously started. To be prevented.
When the shift lever is in the P range and the ignition key is in the ON position, the cam portion and the lock lever do not engage in the moving direction of the first cable. In this state, by depressing the brake pedal and transmitting the movement of the brake pedal to the shift lock means through the second cable, the shift lock can be released, and the shift lever is shifted to a range other than the P range. It becomes possible. When the shift lever is shifted to a range other than the P range, the lock lever is positioned at a position where it can be engaged with the cam portion of the key cylinder in the rotation direction by the movement of the cable end. In this state, set the ignition key to LO
When turned to the CK position side, the lock lever turns due to the engagement with the cam portion of the key cylinder, but the turning amount by the cam portion of the lock lever is restricted by the stopper, so turn the ignition key to the LOCK position. Therefore, the ignition key is prevented from moving to the LOCK position. Therefore, when the shift lever is outside the P range, the ignition key is prevented from coming off the key cylinder.

[0008]

1 to 11 show a shift lever device for an automatic transmission according to an embodiment of the present invention. In FIG. 7, reference numeral 10 indicates a base plate fixed to the vehicle body side. The base plate 10 includes a shift lever 11
Is swingably supported in the vehicle front-rear direction. The movement of the shift lever 11 in the vehicle front-rear direction is transmitted to a transmission (not shown). A shift button 12 is provided near the top of the shift lever 11. A detent pin 13 that is interlocked with the shift button 12 is movably provided below the shift lever 11. The detent pin 13 can be engaged with the positioning step portion 14a of the detent plate 14 that holds the shift lever 11 at each shift position. The detent pin 13 is biased upward by a spring (not shown) housed in the shift lever 11.

One of the first cables 20 for transmitting mechanical power is connected to the shift lever 11. First
Cable 20 extends to the vicinity of a key cylinder 24 arranged near a steering wheel (not shown). A cable end (terminal fitting) 26 is connected to the other end of the first cable 20. Cable end 2
6 is composed of a rod-shaped member located on the extension line of the first cable 20. Both ends of the cable end 26 are supported by brackets 27 and 28, respectively, as shown in FIG. The cable end 26 is the first
The cable 20 makes it possible to move only in the axial direction. A flange 26a is formed at the center of the cable end 26 in the axial direction so as to bulge outward in the radial direction.

A lock lever 30 is supported at a portion of the cable end 26 adjacent to the flange 26a so as to be rotatable about its axis. The axial displacement of the lock lever 30 is restricted by the flange 26 a and the retaining ring 29 mounted on the cable end 26. The cable end 26 is biased in the direction of arrow A by a spring 31 as a biasing means arranged between the flange 26a and the bracket 27. As shown in FIG. 3, the lock lever 30 includes a support portion 30a supported by the cable end 26 and an extension portion 30b extending from the support portion 30a to the left and right.
Have respectively. Lock lever 30 is snap ring 2
9 and the other bracket 28, a spring 32 as a biasing means is arranged between the stopper 41 and a stopper 41 described later.
Is urged in the direction of arrow B so as to come into contact with.

The key cylinder 24 has a substantially fan-shaped cam portion 25 extending in the circumferential direction. The cam portion 25 is interlocked with the movement of the ignition key 23 inserted into the key cylinder 24, and is rotatable about the axis of the key cylinder 24. The position of the ignition key 23 relative to the key cylinder 24 is LOCK, ACC, as shown in FIG.
There are four (accessories), ON, and START. LO
The CK position is a position where the ignition key 23 is inserted. Ignition key 23 from LOCK position to AC
When rotated to the C position, a device such as a radio inside the vehicle can be turned on. Turn on the ignition key 23
After passing through the position and rotating to the START position, the engine can be started by the motor. When the ignition key 23 is released in this state, the ignition key 23 automatically returns to the ON position. When the vehicle is running, the ignition key 23 is in the ON position. The ignition key 23 can be removed from the key cylinder 24 only at the LOCK position.

The shift lever 11 includes a detent pin 13
By engaging with the positioning step portion 14a of the detent plate 14, it is possible to selectively position in six ranges of P range, R range, N range, D range, 2 range, and L range. The P range is a parking range and is used when the vehicle is parked. The R range is a reverse range and is used when the vehicle moves backward. The N range is a neutral range and is used to stop the transmission of the rotational driving force of the engine to the wheels. The D range is
This drive range is used when the vehicle moves forward, and is used when the variable speed is automatically switched to the first to fourth speeds. The second range is used when the variable speed in the D range is limited to the first and second speeds. The L range is a low range and is used when the variable speed in the D range is limited to 1 speed. The shift lever 11 is shifted from a specific range to another range by releasing the engagement between the detent pin 13 and the detent plate 14 by pressing the shift button 12.

When the shift lever 11 is in the P range and the ignition key 23 is in a position other than the ON position of the key cylinder 24, the lock lever 30 has the key cylinder 24.
The cam portion 25 and the first cable 20 can be engaged with each other in the moving direction. The lock lever 30 is the shift lever 1
When 1 is in a range other than the P range, the key cylinder 2 is moved by moving the cable end 26 as shown in FIG.
It is positioned so as to be engageable with the cam portion 25 of No. 4 in the rotating direction. Stoppers 40, 41 are provided near the lock lever 30.
Is arranged. The two stoppers 40 and 41 are immovably fixed to the key cylinder 24 side, for example.
The stopper 40 is provided with the lock lever 30 when the shift lever 11 is in a range other than the P range and the lock lever 30 is rotated by a predetermined amount due to the engagement in the rotational direction with the cam portion 25 by the operation of the ignition key 23. It has a function of contacting and blocking the movement of the ignition key 23 to the LOCK position.

As shown in FIG. 7, the detent plate 1
4 is a shift lock cam 5 as shift lock means.
0 is swingably attached. Shift lever 11
Can be shifted from the P range to another range by pushing down the shift lock cam 50 with the detent pin 13. A holder 52 that movably holds the shift lock pin 51 is provided on the base plate 10 side. The tip end portion of the shift lock pin 51 is engageable with the shift lock cam 50. When the shift lock cam 50 and the shift lock pin 51 are engaged, the shift lock cam 50 is locked by the detent pin 13. It cannot be swung downwards. The shift lock pin 51 is connected to the brake pedal 60 via a second cable 56. The shift lock pin 51 is
By depressing the brake pedal 60, the brake pedal 60 is moved in a direction away from the shift lock cam 50, whereby the shift lock pin 51 and the shift lock cam 50 are moved.
Is disengaged.

Next, the operation of the above-described shift lever device for an automatic transmission will be described. FIG. 3 shows a case where the shift lever 11 is in the P range and the ignition key 23 is in the LOCK position of the key cylinder 24. In this state, the extension portion 30b of the lock lever 30 and the cam portion 25 of the cylinder key 23 are connected to the first cable 20.
Therefore, when the shift lever 11 is to be shifted to a range other than the P range, the lock lever 30 comes into contact with the cam portion 25 and the shift lever 11 moves.
It becomes impossible to perform a shift operation to a range other than the P range. Therefore, when the shift lever 11 is in the P range and the ignition key 23 is in the LOCK position, even if the shift lock cam 50 and the shift lock pin 51 are released by depressing the brake pedal 60, A shift operation to a position other than the P range cannot be performed, and an erroneous start of the vehicle is prevented.

In FIG. 4, the shift lever 11 is in the P range, and the ignition key 23 is connected to the AC of the key cylinder 24.
The figure shows the case where it is rotated to the C position. Even in this state, the extension portion 30b of the lock lever 30 and the cam portion 25 of the key cylinder 24 can be engaged with each other in the moving direction of the first cable 20, so that the shift lever 11 is shifted to a range other than the P range. When trying to do so, the lock lever 30 comes into contact with the cam portion 25. Therefore, even in this case, even if the brake pedal 60 is depressed to release the engagement between the shift lock cam 50 and the shift lock pin 51, the shift lever 1
The shift operation to the range other than P range 1 is not possible.

In FIG. 5, the shift lever 11 is in the P range, the ignition key 23 is turned on, and the key cylinder 24 is turned on.
It shows the case of rotating to the position. In this case, the cam portion 25 and the lock lever 30 do not engage in the moving direction of the first cable 20. However, since the shift lock pin 51 and the shift lock cam 50 are engaged, the shift lever 11 cannot be shifted to a range other than the P range unless the brake pedal 60 is depressed. By depressing the brake pedal 60 in this state, the engagement between the shift lock pin 51 and the shift lock cam 50 is released. When the engagement between the shift lock pin 51 and the shift lock cam 50 is released, the detent pin 13 can be pushed down by pressing the shift button 12, and the detent pin 13 and the shift lever 11 are positioned in the P range. Notch 14 with detent plate 14
The engagement with b is released. Therefore, the shift lever 1
No. 1 is not restricted by the cutout portion 14b of the detent plate 14, and the shift operation to another range becomes possible.

FIG. 6 shows changes in the position of the cable end 26 with respect to the key cylinder 24 when the shift lever 11 is shifted to a range other than the P range. In this state, the lock lever 30 is positioned by the movement of the cable end 26 at a position where it can engage with the cam portion 25 of the key cylinder 24 in the rotation direction. When the shift lever 11 is shifted to a range other than the P range and the ignition key 23 is in the ON position of the key cylinder 24, the positional relationship between the cam portion 25 and the lock lever 30 in the rotation direction is the same as in FIG. become. Ignition key 23 in this state
The cam 25 to the lock lever 30
The lock lever 30 rotates in the direction of arrow C about the cable end 26, and the other extended portion 30b of the lock lever 30 abuts on the stopper 40. Since the stopper 40 blocks the rotation of the lock lever 30 by a predetermined amount, the LO of the ignition key 23 is reduced.
Movement to the CK position is blocked.

When the shift lever 11 is returned to the P range, as shown in FIG. 1, the lock lever 30 moves the cam end 25 of the key cylinder 24 by the movement of the cable end 26.
Therefore, the rotation of the cam portion 25 is not restrained by the lock lever 30. As a result, the ignition key 23 at the ON position or the ACC position can be returned to the LOCK position as shown in FIG. Therefore, the ignition key 23 is locked
It cannot be removed from the key cylinder 24 except at the position.

9 to 11 show a modification of FIG. In FIG. 3, the lock lever 30 has two extension portions 3
0b is formed, and the other extended portion 30b is brought into contact with the stopper 40 to regulate the swing amount of the lock lever 30, but here, the stopper 70 is formed at the cable end 26 and escapes to the support portion 30a. The groove 71 is formed. The rocking of the lock lever 30 is performed by the end faces 71a, 7a of the escape groove 71.
It is regulated by the contact of 1b with the stopper 70.
As shown in FIGS. 10 and 11, the movement of the lock lever 30 is the same as that in FIGS.

In this embodiment, since the shift lock mechanism and the key interlock mechanism are all of a pure mechanical structure, electric control is unnecessary as compared with a structure using a solenoid.
The mechanism can be simplified and the reliability of the mechanism can be improved.

[0022]

The shift lever device for an automatic transmission according to the present invention has the following advantages. (1) When the shift lever is in the P range and the ignition key is not in the ON position of the key cylinder, the lock lever and the cam portion of the key cylinder can be engaged in the moving direction of the first cable. If an attempt is made to shift the shift lever to a range other than the P range, the lock lever contacts the cam portion of the key cylinder as the cable end moves, and the shift lever cannot be operated to a range other than the P range. . Therefore, when the ignition key is in an inappropriate position, even if the brake pedal is depressed, it is impossible to shift the shift lever from the P range to another range, and it is possible to prevent the vehicle from erroneously starting. (2) When the shift lever is shifted to a range other than the P range, the lock lever is positioned at a position where it can be engaged with the cam portion of the key cylinder in the rotation direction by the movement of the cable end. The amount of rotation when rotating due to the engagement with the cam portion can be restricted by the stopper. Therefore, when the shift lever is outside the P range, the ignition key cannot be turned to the LOCK position, and it is possible to prevent the ignition key from coming off the key cylinder. (3) If the brake pedal is not depressed, the shift lever will move to P.
A shift lock mechanism that prevents shifting from one range to another range, and a key interlock mechanism that prevents the ignition key from slipping out of the key cylinder unless the shift lever is set to the P range to turn the ignition key to the LOCK position. Since all have a pure mechanical structure, they do not require electrical control as compared with a mechanism using a solenoid. Therefore, the mechanism can be simplified and the reliability of the mechanism can be improved.

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view of essential parts showing a positioning state of a cable end when a shift lever in an automatic transmission shift lever device according to an embodiment of the present invention is in a P range.

FIG. 2 is an enlarged cross-sectional view of an essential part showing a positioning state of a cable end when the shift lever in the shift lever device of FIG. 1 is in a range other than the P range.

FIG. 3 is a schematic diagram showing a positional relationship between a cam portion and a lock lever when the shift lever in the shift lever device in FIG. 1 is in the P range and the ignition key is in the LOCK position.

FIG. 4 is a schematic diagram showing a positional relationship between a cam portion and a lock lever when the shift lever in the shift lever device of FIG. 1 is in the P range and the ignition key is in the ACC position.

5 is a schematic diagram showing the positional relationship between the cam portion and the lock lever when the shift lever in the shift lever device of FIG. 1 is in the P range or a range other than the P range and the ignition key is in the ON position.

FIG. 6 is a diagram illustrating a shift lever in the shift lever device of FIG. 1 in a range other than the P range and an ignition key A.
It is a schematic diagram which shows the positional relationship of a cam part and a lock lever at the time of CC position.

FIG. 7 is a schematic configuration diagram showing the entire shift lever device of FIG. 1.

8 is a front view showing the positional relationship between the key cylinder and the ignition key of FIG. 1. FIG.

9 is an enlarged front view showing a modified example of the lock lever of FIG.

10 is a schematic diagram showing the positional relationship between the cam portion and the lock lever when the shift lever in the shift lever device using the lock lever of FIG. 9 is in the P range or a range other than the P range and the ignition key is in the ON position. Is.

11 is a schematic diagram showing the positional relationship between the cam portion and the lock lever when the shift lever in the shift lever device using the lock lever of FIG. 9 is in a range other than the P range and the ignition key is in the ACC position.

[Explanation of symbols]

 11 shift lever 20 first cable 23 ignition key 24 key cylinder 25 cam portion 26 cable end 30 lock lever 40 stopper 50 shift lock means 56 second cable 60 brake pedal

Claims (1)

[Claims] 1. A first cable movable in the axial direction by a shift operation of a shift lever, and a cable end attached to one end of the first cable and movable only in the axial direction by the first cable, A key cylinder arranged near the cable end and having a cam portion rotatable around an axis by operating an ignition key; and a key cylinder supported by the cable end rotatably around the axis, and the shift lever P When the ignition key is in the range and the ignition key is not in the ON position of the key cylinder, the cam portion of the key cylinder and the first cable can be engaged in the moving direction, and when the shift lever is in a range other than the P range, A lock lever positioned so as to be engageable with the cam portion of the key cylinder in the rotation direction by the movement of the cable end; When the shift lever is in a range other than the P range and the lock lever is rotated by a predetermined amount due to the engagement of the ignition key with the cam portion in the rotation direction, the lock lever comes into contact with the lock lever to the LOCK position of the ignition key. Is connected to the stopper that blocks the movement of the brake pedal through the second cable, and the shift lock is released by depressing the brake pedal to release the shift lock.
A shift lever device for an automatic transmission, comprising: a shift lock unit that allows a shift operation of a shift lever located in a range to a position other than the P range.