JP3011650B2 - Shift lever device for automatic transmission - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a shift lock mechanism and a key interlock mechanism in a shift lever device for an automatic transmission of an automobile.

[0002]

2. Description of the Related Art A shift lever device for an automatic transmission is provided with a shift lock mechanism and a key interlock mechanism. The shift lock mechanism is intended to prevent an erroneous operation of the shift lever when the vehicle starts, and the shift lever can be shifted from the P range to another range unless the brake unlocking solenoid is operated by depressing a brake pedal. Can not. The key interlock mechanism is
It prevents the ignition key from coming out of the key cylinder under certain conditions.It is possible to move the ignition key from the ACC position to the LOCK position only when the conditions are satisfied, and it is possible to pull out the ignition key at the LOCK position. It becomes possible. The shift lock mechanism is of an electric type using an electric actuator such as a solenoid, but the key interlock mechanism is of an electric type using an electric actuator and a mechanical type using a wire cable. Things exist.

FIG. 19 shows an example of a shift lock mechanism and a key interlock mechanism in a shift lever device for a conventional automatic transmission. As shown in FIG. 19, when the shift lever 1 is in the P range and a brake pedal (not shown) is depressed, a solenoid (not shown) is excited and a stopper (not shown) located below the shift lock plate 2 is provided. Moves). Thereby, the contact between the shift lock plate 2 and the stopper is avoided, and the detent pin 4 engaged with the shift lock plate 2 can be pushed down by a predetermined amount by pressing the shift button 3. Accordingly, the engagement between the detent pin 4 and the detent plate 5 is released, and the shift lever 1 can be shifted from the P range to another range.

The key interlock mechanism is composed of a key cylinder 7 by a cable 6 interlocking with the shift lock plate 2.
The lock pin 8 arranged on the side is slid to restrict the movement of the cam 9 which is linked with the key cylinder 7. Shift lock plate 2 is detent pin 4
In the state where the cable lever 10 is pulled up by the engagement with the lock lever 2, the cable lever 10 that contacts the shift lock plate 2 rotates, and the lock pin 8 is pushed toward the key cylinder 7 by pushing out the cable 6 by the rotation of the cable lever 10. . As a result, the lock pin 8 moves from the rotation restricting position of the cam 9 in the key cylinder 7, and the ignition key 1
2 can be rotated from the ACC position to the LOCK position, and the ignition key 12 can be removed from the key cylinder 7. When the shift lever 1 is in a range other than the P range, the cable key 10 pulls the cable 6 to move the lock pin 8 to a position where the rotation of the cam 9 is restricted, so that the ignition key 12 stops at the ACC position and the LOCK position. Unable to rotate until.

In the shift lever device for an automatic transmission, a shift lock release button 11 is provided in consideration of a case where the solenoid does not operate even when the brake pedal is depressed due to a voltage drop of a battery or the like. Shift lock release button 1
1 forcibly moves a stopper (not shown) by pressing, and can prevent the shift lock plate 2 from contacting the stopper due to the movement of the stopper. Therefore, the detent pin 4 engaged with the shift lock plate 2 can be pushed down by pressing the shift button 3, and the disengagement of the detent pin 4 and the detent plate 5 causes the shift lever 1 to move from the P range to another position. It is possible to shift to the range.

[0006]

However, the conventional shift lever device for an automatic transmission has the following problems. When the shift lock mechanism is configured using an electric actuator such as a solenoid and the key interlock mechanism is configured mechanically using a cable, the shift lever is shifted to the P range, and the ignition key is pulled out of the key cylinder. Even if the shift lock release button is pressed in this state, the shift lever cannot be shifted to a range other than the P range. This is because the key cylinder is L
At the OCK position, the lock pin hits the cam in the key cylinder, so that the cable cannot be pulled and the shift lock plate with which the detent pin is engaged cannot be lowered. Therefore, the shift lever cannot be shifted to the N range (neutral range) at the time of failure or transportation of the vehicle, and the vehicle cannot be moved or towed. When the shift lock mechanism is configured using an electric actuator such as a solenoid, and the key interlock mechanism is also configured electrically using a solenoid, the shift lever is in the P range and the key cylinder is in the LOCK position. Even after shifting the shift lever to a range other than the P range by operating the shift lock release button,
It becomes possible to remove the ignition key from the key cylinder. That is, when the ignition key is at the LOCK position, the electric system of the engine is OFF,
Since the key interlock solenoid cannot be energized,
Even if the shift lever is shifted to a range other than the P range, it cannot be prevented from removing the ignition key from the key cylinder. If the ignition key is removed from the key cylinder while the shift lever is in a range other than the P range, it is possible that the shift lever has been shifted to a range other than the P range during parking, and when parking on a slope etc. Makes it easier for cars to start moving.

An object of the present invention is to prevent a shift operation of the shift lever to a position other than the P range when the ignition key is inserted into the key cylinder when the shift lever is in the P range and the key cylinder is in the LOCK position. It is another object of the present invention to provide a shift lever device for an automatic transmission that enables a shift operation of a shift lever to a range other than the P range when an ignition key is pulled out from a key cylinder.

[0008]

A shift lever device for an automatic transmission according to the present invention which achieves this object is as follows. Has a detent pin that works with the shift button,
A shift lock mechanism that has a shift lever that can be positioned in each range, a stopper that restricts the movement of the detent pin when the shift lever is in the P range, and the stopper is driven by an electric actuator; A shift lock release button that releases the restriction of the detent pin by the stopper, and a cable end that interlocks with the movement of the detent pin via a cable when the shift lever is in the P range.
The cable end is movably disposed, and has an engagement means that moves by contact with an ignition key inserted into the key cylinder. When the ignition key is inserted into the key cylinder, the key cylinder is moved to the LOCK position.
When the ignition key is pulled out of the key cylinder when the ignition key is pulled out from the key cylinder, the cable end is moved by disengaging the cable end when the ignition key is pulled out of the key cylinder. A shift lever device for an automatic transmission, comprising:

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 inserted into the key cylinder at the LOCK position, the engagement means of the key interlock mechanism is engaged. The cable end moves, and the movement of the cable end is prevented by engagement with the engagement means. Therefore, the movement of the detent pin interlocked with the cable end via the cable is also prevented. Therefore, even if the shift lock release button is pressed to release the stopper, the detent pin cannot be moved, and the shift lever cannot be shifted to a range other than the P range. The shift lever is in the P range,
In a state where the ignition key is pulled out from the key cylinder at the LOCK position, the engaging means does not contact the ignition key, so the engaging means does not move, and the cable end and the engaging means are in the non-engaged state. Therefore, in a state where the stopper is moved by pressing the shift lock release button, the detent pin interlocking with the cable end can be moved by pressing the operation button,
The shift lever can be shifted to a range other than the P range.

[0010]

FIG. 1 to FIG. 18 show an embodiment of the present invention. The shift lever 31 can swing in the vehicle front-rear direction about a shaft (not shown) provided on the base plate 30 side. Shift lever 31
A shift button 33 is provided in the vicinity of the top.
As shown in FIG. 15, a detent pin 34 interlocking with a shift button 33 is movably provided below the shift lever 31. The detent pin 34 can be engaged with a detent plate 35 provided on the base plate 30 side to determine the shift position of the shift lever 31. Detent pin 34 is biased in the direction of arrow X ₁ by a spring (not shown). Base plate 3
On the 0 side, a swing arm 36 that engages with the detent pin 34 when the shift lever 31 is in the P range and that is interlocked with the movement of the detent pin 34 is vertically swingably supported. The swing arm 36 is swingable about a fulcrum 36a, and the detent pin 34 is engageable with a concave groove 36c formed in the swing arm 36. Swing arm 36 is urged in the direction of arrow X ₂ by a spring (not shown).

Below the detent pin 34, a shift lock mechanism 40 is provided. Shift lock mechanism 4
Numeral 0 includes a stopper 41 and a solenoid 45. The stopper 41 can swing in the vehicle front-rear direction about the fulcrum portion 41a. The top surface 41b of the stopper 41 is formed as a flat surface to which the detent pin 34 can abut. The lower end of the stopper 41 is connected to a solenoid 45 as an electric actuator. The solenoid 45 includes a solenoid body 45a, a plunger 45,
b, a spring 45c. The lower end of the stopper 41 is connected to the plunger 45b. When a voltage is applied to the solenoid body 45a, the plunger 45b is sucked toward the solenoid body 45a, and the top surface 41b of the stopper 41 separates from the detent pin 34. Move in the direction. When the solenoid main body 45a is in a non-energized state, the plunger 45b moves in a direction away from the solenoid main body 45a by the spring 45c, and the top surface 41b of the stopper 41 is located immediately below the detent pin 34.

An outwardly extending arm 46 is provided at a fulcrum 41a of the stopper 41. The tip 46a of the arm 46 is formed in a flat surface. A shift lock release button 47 is provided immediately above the distal end 46a of the arm 46. The shift lock release button 47 is slidably held by an upper cover (not shown) that covers the upper part of the base plate 30. Shift lock release button 4
When the arm 46 is pressed by the arm 7, the arm 46 swings about the fulcrum 41a, and the restriction of the detent pin 34 by the stopper 41 is released.

The swing arm 36 has a connecting arm 36d extending downward. The connecting arm 36d is connected to the fulcrum 3
6a can be pivoted in the vehicle front-rear direction. One end of a cable (wire cable) 50 for transmitting mechanical power is connected to the connection arm 36d.
A cable end 51 is connected to the other end of the cable 50. The movement of the cable end 51 is
Is interlocked with the movement of the detent pin 34 engaged with the swing arm 36 through the arm. The cable end 51 is movable in the axial direction by a stroke S by the swing of the swing arm 36.

As shown in FIG. 1, the cable end 51 is housed in a key interlock mechanism 60. The key interlock mechanism 60 includes a lock body 61, a key cylinder (rotor) 62, a rotor case 63, a lock pin 6
4, camshaft 65, engaging means 70 and the like.
The lock body 61 is fixed to the steering column side of the vehicle body. The rotor case 63 is mounted inside the lock body 61. The key cylinder 62 is arranged inside the rotor case 63. The key cylinder 62 is rotatably supported by the rotor case 63. The ignition key 55 can be inserted into the key cylinder 62. By rotating the ignition key 55, the key cylinder 62 can be rotated to a predetermined position.

The key cylinder 62 is, as shown in FIG.
The ignition key 55 allows positioning at a LOCK position, an ACC position, an ON position, and a START position. The LOCK position is a position where the ignition key 55 is inserted and a position where the ignition key 55 is removed. When the ignition key 55 is rotated from the LOCK position to the ACC position, a device such as a radio in the vehicle compartment can be turned on. Ignition key 55
When the is rotated to the START position after passing through the ON position, the engine can be started by the motor.
When the ignition key 55 is released in this state, the ignition key 55 automatically returns to the ON position.

The key cylinder 62 includes a camshaft 65.
Are connected. The camshaft 65 rotates integrally with the key cylinder 62. A first engagement protrusion 65 protruding radially outward is provided on the camshaft 65.
a and the second engagement protrusion 65b are formed. A lock pin 64 is slidably held by the lock body 61. The portion of the lock body 61 where the lock pin 64 slides is covered by a cover 69. The lock pin 64 has a first pin 64a extending toward the center line Y of the lock body 61, and a second pin 64b extending radially outward with respect to the center line Y. First pin 64
a can be engaged with the first engagement protrusion 65a of the camshaft 65 around the axis (center line Y). The second pin 64b is always engaged with the cable end 51 in the axial direction (the direction along the center line Y).

An engaging means 70 is provided in the lock body 61. The engagement means 70 includes the slide piece 7
1, a locking lever 72 and a locking link 73. The slide piece 71 is slidably supported by the key cylinder 62. Slide piece 71
Is biased toward the center line Y by a spring or the like (not shown). When the ignition key 55 is not inserted into the key cylinder 62, the end of the slide piece 71 protrudes from the inner surface 62 a of the key cylinder 62. The slide piece 71 is in a state where the ignition key 55 is inserted into the key cylinder 62.
It is configured to be pushed outward by contact with the ignition key 55. One end of the slide piece 71 is formed on an inclined surface 71a for pushing the slide piece 71 outward.

The locking lever 72 has a shaft 75 at one end.
And is swingably supported on the lock body 61 side via the. The locking lever 72 can swing in a direction orthogonal to the center line Y. Locking lever 72
It is urged in the arrow X ₃ direction by a spring (not shown) or the like. On the free end side of the locking lever 72, a pressing surface 72a that can contact the locking link 73 is formed. The locking link 73 is formed with a first engagement portion 73a extending toward the center line Y and a second engagement portion 73b extending radially outward with respect to the center line Y. The first engagement portion 73a is engageable with the second engagement protrusion 65b of the camshaft 65 around the axis (center line Y). Further, the first engaging portion 73 a of the locking ring 73 can be engaged with the pressing surface 72 a of the locking lever 72. The second engaging portion 73b is capable of engaging with the engaging protrusion 51a of the cable end 51.
Locking link 73, by a spring or the like (not shown) is always biased in the arrow X ₄ direction.

The other end of the slide piece 71 is formed on a pressing surface 71b formed of an inclined surface. Key cylinder 6
When the ignition key 55 is inserted into the slide piece 2, the locking lever 72 is
1b, the arrow K shown in FIGS. 7 and 13
It swings in _one direction. Key cylinder 62
When the ignition key 55 is pulled out of the lock lever 72, the locking piece 72 is not pressed by the slide piece 71, and the locking lever 72 presses the first engagement portion 73a of the locking link 73 by the urging force of a spring (not shown). Has become. Camshaft 6
5 rotates around the axis by rotating the ignition key 55 inserted into the key cylinder 62,
The positions of the first engagement protrusion 65a and the second engagement protrusion 65b change.

Next, the operation of the shift lever device for an automatic transmission will be described. FIG. 15 shows a state where the shift lever 31 is located in the P range. Here, even if the shift button 33 is pressed to push down the detent pin 34, as shown in FIG. 16, the detent pin 34 contacts the top surface 41b of the stopper 41. Can not. Therefore, the detent pin 34 remains engaged with the detent plate 35 and the shift lever 3
A shift operation from one P range to another range becomes impossible.

When the shift lever 31 is in the P range and the brake pedal (not shown) is depressed, the solenoid 45 is excited, and as shown in FIG.
Since 5b is attracted to the solenoid body 45a side, the stopper 41 swings about the fulcrum 41a. Thereby, the contact between the detent pin 34 and the stopper 41 is avoided, and the detent pin 34 can be pushed down by a predetermined amount by pressing the shift button 33. Therefore,
The engagement between the detent pin 34 and the detent plate 35 is released, and the shift lever 31 can be shifted from the P range to another range.

FIG. 6 shows a state in which the shift lever 31 is in the P range and the ignition key 55 inserted into the key cylinder 62 is in the LOCK position. In this case, the slide piece 71 is connected to the ignition key 5
When the locking lever 72 is pushed outward by the contact with the slide piece 5, the locking surface 72 b of the slide piece 71 is pressed. Since the top of the slide piece 71 is formed on an inclined surface, the locking lever 72 is
Due to the pressing by _1, it swings in the direction of arrow K ₁ and stops at the position shown in FIG. 7.

In the state shown in FIG. 6, the first engaging portion 73a of the locking link 73 engages with the second engaging protrusion 65b of the cam shaft 65 around the axis, and is urged by a spring (not shown). The locking link 65 rests at the position (a) shown in FIG. In this state, since the engagement with the engaging projections 51a each other in the axial direction of the second engagement portion 73b and the cable end 51 of the locking link 73, the arrow K ₂ the direction of movement of the cable end 51 is prevented.
Therefore, the downward movement of the swing arm 36 connected to the cable end 51 via the cable 50 is also prevented. Therefore, even if the stopper 41 is released by pressing the shift lock release button 47, the detent pin 34 engaged with the swing arm 36 cannot be pushed down by a predetermined amount by pressing the shift button 33, and the shift lever 31 Shifting to a range other than the P range becomes impossible.

FIG. 9 shows a state where the shift lever 31 is in the P range and the ignition key 55 is not inserted into the key cylinder 62. In this case, since the slide piece 71 does not contact the ignition key 55, the slide piece 71 is not pushed out. In this state, the first engaging portion 73a of the locking link 73 is moved by an arrow X
_Since the pressing surface 72a of the locking lever 72 urged in _three directions is pressed, the position shown in FIG.
Will tilt up. In this case, the locking link 7
The engaging protrusion 51a of the second engagement portion 73b and the cable end 51 of the 3 will no longer engage in the axial direction, the arrow K ₂ the direction of movement of the cable end 51 is allowed, via the cable end 51 and cable 50 The downward movement of the swing arm 36 that is connected to the arm is also allowed. Therefore, in a state where the shift lock release button 47 is pressed and the stopper 41 is released from immediately below the detent pin 34, the detent pin 34 can be pressed down below the engagement surface of the detent plate 35 by pressing the shift button 33,
The shift lever 31 can be shifted to a range other than the P range.

FIG. 12 shows a state in which the shift lever is in the P range and the ignition key 55 inserted into the key cylinder 62 is in the ACC position or the ON position. In this case, the slide piece 71 is pushed outwardly by contact with the ignition key 55, the locking lever 72 is pressed by the top of the sliding piece 71, locking lever 72 is swung in the arrow K ₁ direction, It stops at the position shown in FIG. When the ignition key 55 is in the ACC position and the ON position,
Since the camshaft 65 connected to the key cylinder 62 is also rotated by a predetermined angle around the axis, the second engagement protrusion 65b of the camshaft 65 is connected to the locking link 73.
Move away from.

As shown in FIG. 14, when the second engaging projection 65b of the cam shaft 65 is moved in a direction away from the locking link 73, rocking the arrow K ₃ direction by a spring or the like which locking link 73 is not shown The locking link 73 moves to the pressing surface 7 of the locking lever 72.
It stops at position (c) due to contact with 2a. In this state, the axial engagement between the second engagement portion 73b and the engagement protrusion 51a of the cable end 51 is released. Here, the arrow K ₂ the direction of movement of the cable end 51, so is permitted, the downward movement of the swing arm 36 which is connected via a cable end 51 and the cable 50 are acceptable.
Therefore, in a state where the shift lock release button 47 is pressed and the stopper 41 is released from directly below the detent pin 34, the detent pin 34 can be pushed down from the engagement surface of the detent plate 35 by pressing the shift button 33, The lever 31 can be shifted to a range other than the P range.

FIG. 4 shows the lock pin 64 and the camshaft 6.
5 shows a positional relationship. Lock pin 64 is movable with the movement of the cable end 51 in the axial direction (the direction along the center line Y), the lock pin 64 shift lever 31 only when in the P range at rest position S ₁ ing. In this state, the first pin 64a of the lock pin 64
Is displaced with respect to the first engagement protrusion 65a of the camshaft 65, the engagement between the first pin 64a and the first engagement protrusion 65a is avoided, and the first pin 64a is inserted into the key cylinder 62. The ignition key 55 can be returned from the ACC position to the LOCK position, and the ignition key 55 can be pulled out from the key cylinder 62.

When the shift lever 31 is shifted to a range other than the P range, the swing arm 36 swings downward as the detent pin 34 is depressed, so that the cable end 51 interlocked with the movement of the swing arm 36. Is the position S
Move to ₂ . Therefore, the lock pin 64 held by the cable end 51 also moves with the cable end 51. In this state, the first pin 64a of the lock pin 61 can be engaged with the first engagement protrusion 65a of the camshaft 65, so that the ignition key 55 inserted into the key cylinder 62 is locked from the ACC position to the LOCK position.
Since the ignition key 55 cannot be returned to the position, it is possible to prevent the ignition key 55 from coming off from the key cylinder 62.

In the above embodiment, the rocking lever 72 is swung by the movement of the slide piece 71, and the cable end 51 is prevented from moving by the movement of the locking link 73 caused by the swing of the locking lever 72. A configuration in which the 71 is directly engaged with the cable end 51 or a configuration in which the raid piece 71 is disengaged from the cable end 51 by turning the ignition key 55 to the ACC position or the ON position may be adopted. For example, various configurations are possible, such as providing the slide piece 71 on the key cylinder 62 and rotating the slide piece 71 together with the rotation of the key cylinder 62 so as to deviate from the movement locus of the cable end 51.

[0030]

According to the shift lever device for an automatic transmission according to the present invention, the following effects can be obtained. (1) When the shift lever is in the P range and the key cylinder is in the LOCK position, and the ignition key is inserted into the key cylinder, the shift lever P
Shift operation to a range other than the range can be prevented. Therefore, parking in a state where the shift lever is shifted to a range other than the P range becomes impossible, and it is possible to prevent the vehicle from starting to move when parking on a slope. (2) If the ignition key is removed from the key cylinder when the shift lever is in the P range and the key cylinder is in the LOCK position, the shift lever is shifted to a range other than the P range by operating the shift lock release button. Can be done. Therefore, it is possible to manually move the vehicle from which the ignition key has been pulled out of the key cylinder, and it is possible to cope with an emergency such as a failure of the vehicle or securing a course of a fire engine.

[Brief description of the drawings]

FIG. 1 is a sectional view of a key interlock mechanism in a shift lever device for an automatic transmission according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a movement of a locking link in a portion A of FIG. 1;

FIG. 3 is a front view of the key cylinder of FIG. 1 as viewed from a direction B.

FIG. 4 is a sectional view taken along the line CC of FIG. 1;

FIG. 5 is a cross-sectional view taken along line DD of FIG.

FIG. 6 is a sectional view showing a state in which an ignition key is inserted into the key cylinder of FIG. 1;

FIG. 7 is a plan view showing a positional relationship between a locking lever and a locking link in FIG. 6;

FIG. 8 is a side view of the locking lever and the locking link of FIG.

FIG. 9 is a sectional view showing a state where an ignition key is pulled out from the key cylinder of FIG. 1;

FIG. 10 is a plan view showing a positional relationship between a locking lever and a locking link in FIG. 9;

FIG. 11 is a side view of the locking lever and the locking link of FIG. 10 as viewed from a direction F.

12 is a sectional view showing a state in which an ignition key inserted into the key cylinder of FIG. 1 has been moved to an ACC position or an ON position.

FIG. 13 is a plan view showing a positional relationship between a locking lever and a locking link in FIG. 12;

FIG. 14 is a side view of the locking lever and the locking link of FIG.

15 is a perspective sectional view of the shift lock mechanism of the shift lever device for the automatic transmission of FIG. 1 in a state where the shift button is not pressed.

FIG. 16 is a perspective sectional view showing a cam locked state in which the detent pin of FIG. 15 is pressed down by a shift button.

17 is a perspective sectional view showing a state in which the solenoid of FIG. 15 is excited to release a stopper from immediately below a detent pin.

18 is a perspective sectional view showing a state where the stopper of FIG. 15 is moved by operating a shift lock release button.

FIG. 19 is a perspective view showing an example of a conventional shift lever device for an automatic transmission.

[Explanation of symbols]

 31 shift lever 33 shift button 34 detent pin 40 shift lock mechanism 41 stopper 51 cable end 55 ignition key 60 key interlock mechanism 62 key cylinder 70 engaging means

Claims (1)

(57) [Claims] 1. A shift lever having a detent pin interlocked with a shift button and positionable in each range, and a stopper for restricting movement of the detent pin when the shift lever is in a P range. A shift lock mechanism in which a stopper is driven by an electric actuator; a shift lock release button for moving the stopper to release restriction of a detent pin by the stopper; and a cable when the shift lever is in the P range. A cable end interlocking with the movement of the detent pin, and an engagement means which is movably arranged and moves by contact with an ignition key inserted into a key cylinder, wherein the ignition key is inserted into the key cylinder. Key cylinder is in LOCK position
When the ignition key is pulled out of the key cylinder when the ignition key is pulled out from the key cylinder, the cable end is moved by disengaging the cable end when the ignition key is pulled out of the key cylinder. A shift lever device for an automatic transmission, comprising: a key interlock mechanism that allows: