JPH09267717A - Key interlock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate necessity for large force in press operation of a shift knob, by providing an assist spring which assists moving to a first position of a detent pin by a detent spring, in the case of release operating of the shift knob of a shift lever shift-operated in a parking position. SOLUTION: An assist spring 36 is provided in a key interlock device 22 advance/retract actuating a key interlock cable 32 in a lengthwise direction by actuating a cam 26, and locking/unlocking operation of an ignition key of an internal combustion engine. This assist spring 36, in the case of off- operating a shift knob of a shift lever 2 shift operated to a parking position P, assists moving to a first position of a detent pin 16 by a detent spring 20. In this way necessity for large force in press operation of the shift knob is eliminated, and an operation load of the shift knob is reduced, operability can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a key interlock device, and more particularly, it can reduce the operation load of a shift knob, improve the operability, and ensure the reliability of operation.
The present invention relates to a key interlock device that can be implemented without changing the current layout or the like.

[0002]

2. Description of the Related Art A vehicle is provided with an automatic transmission or a manual transmission in order to convert a driving force of an internal combustion engine into a desired one in accordance with a running condition and take it out.

The engagement state of the automatic transmission can be switched to a parking state or a reverse state by a shift lever.
As a shift lever of an automatic transmission, there are those shown in FIGS. 9 to 11. In FIG. 9, 102 is a shift lever,
104 is a lever shaft. The shift lever 102 has a lower end of a lever shaft 104 attached to a bracket (not shown) and a support shaft 106.
Is pivotally supported by.

At the upper end of the lever shaft 104, the grip 10
8 is provided, and a shift knob 110 is provided. Lever shaft 1
As shown in FIGS. 10 and 11, a shift rod 112, which is in contact with the shift knob 110 at one end side, is provided in the shaft 04 so as to be movable in the axial direction. A mounting body 114 is provided on the other end side of the shift rod 112, and a detent pin 116 is mounted on the mounting body 114.

The detent pin 116 is provided in such a manner that it is inserted through an elongated hole 118 for a pin formed in the lever shaft 104 so as to project outward. A detent spring 120 is elastically attached to the mounting body 114.

When the shift knob 110 is pushed, the detent pin 116 is moved from the first position (above the pin hole 118 in FIG. 9) to the second position via the shift rod 112.
It is moved to a position (a position below the pin hole 118 in FIG. 9). The detent spring 120 includes the shift knob 11
The release operation of 0 urges the detent pin 116 to move from the second position to the first position.

The shift lever 102 swings to
For example, as shown in FIG. 9, a first speed position (1), a second speed position (2), a drive position (D), a neutral position (N), a reverse position (R), and a parking position (P). Shift operation to ,.

At this time, the shift lever 102 is moved to the position shown in FIG.
10, the shift knob 110 is pushed to move the detent pin 116 to the second position, the shift knob 110 is shifted to a desired shift position, and the shift knob 110 is released. Then, as shown in FIG. It is moved to the first position, and is engaged with the step portion of the detent plate (not shown) corresponding to each shift position, and is prevented from moving from the selected shift position.

Further, the automatic transmission is provided with a key interlock device for locking / unlocking the operation of the ignition key of the internal combustion engine. As a conventional key interlock device, there is one shown in FIGS. 12 and 13. 12 and 13, reference numeral 122 is a key interlock device.
The key interlock device 122 is provided by mounting a support member 124 on a bracket (not shown) that supports the shift lever 102, and a cam 126 is rotatably supported by a cam shaft 128 on the support member 124.

A detent pin 116 is provided on the cam 126.
The engaging groove 130 for engaging / disengaging is provided, and one end side of the key interlock cable 132 is provided by connecting with the connecting body 134. The key interlock cable 132 is
It is held by a cable holding portion 136 attached to the support body 124, and the other end side is provided so as to communicate with a lock portion provided in a key cylinder of an ignition key (not shown) of an internal combustion engine.

In the cam 126, as shown in FIG. 12, when the shift lever 102 is shifted to the parking position (P), the detent pin 116 moved to the second position by the push operation of the shift knob 110 is engaged with the engagement groove 130. Is engaged with.

As shown in FIG. 13, the cam 126 having the detent pin 116 engaged with the engaging groove 130 has the shift knob 1
When 10 is released and operated, it is unidirectionally moved by the detent pin 116 which is moved to the first position by the detent spring 120.

The cam 126, which is operated in one direction by the detent pin 116, pushes the shift knob 110 as shown in FIG.
It is operated in the other direction by the detent pin 116 that is moved to the second position against.

The key interlock device 122 advances and retreats the key interlock cable 132 in the longitudinal direction by the operation of the cam 126 to lock / unlock the operation of the ignition key of the internal combustion engine.

An example of such a key interlock device is disclosed in Japanese Patent Publication No. 53135/1993. The key interlock device disclosed in this publication is a device that locks a gear shift lever and a handle, and allows a cam adjacent to a cam of a handle lock mechanism rotated by a start key to slide on a wall portion of a steering cylinder. The supported lock pin is urged by a spring, and a sliding plate with a pin hole that can be engaged with and disengaged from the lock pin is slidably supported on the wall of the insertion / removal cylinder, and the shift lever control pin is parked. Adjacent to the opening edge of the control plate engaged with the control plate, a bell crank rotatable about a position for restraining the control pin to the opening edge and a position for releasing the control pin from the opening edge is axially supported by the control plate and slidable. Since the moving plate and the bell crank are connected to each other by the remote control member, the attachment and adjustment are facilitated and the key operation is lightened.

[0016]

By the way, the conventional key interlock device 122 is made to function when the shift lever 102 is in the parking position (P) and the shift knob 110 is released as described above. There are regulations that require

Therefore, the conventional key interlock device 1 is used.
In FIG. 22, the actuation force of the cam 124 that operates the key interlock cable 132 is applied to the detent spring 1
It relies on 20 biases.

However, the conventional key interlock device 1
22 is a detent spring having an urging force that combines the urging force for operating the cam 126 and the urging force necessary for operating the detent pin 116 as a result of operating the cam 126 using the urging force of the detent spring 120. It is necessary to provide 120.

Therefore, the conventional key interlock device 1
In No. 22, the urging force of the detent spring 120 is increased, and a large force is required to push the shift knob 110, so that the operation load of the shift knob 110 becomes heavy and the operability is deteriorated.

If the biasing force of the detent spring 120 is weakened in order to reduce the operating load of the shift knob 110, the certainty of the operation of the key interlock device 122 may be impaired.

[0021]

Therefore, in order to eliminate the above-mentioned inconvenience, the present invention is arranged such that a shift lever for switching an engaged state of an automatic transmission connected to an internal combustion engine is pushed to a first position by pushing a shift knob. From the second position to the second position, a detent spring for urging the detent pin to move from the second position to the first position, and release operation of the shift knob of the shift lever shifted to the parking position. When the detent spring is moved to the first position, the detent pin is moved in one direction and the shift lever is operated to shift to the parking position. A cam that is operated in the other direction by the detent pin that is moved to two positions is provided. In a key interlock device in which a key interlock cable for locking / unlocking the operation of the ignition key of the internal combustion engine is connected to the cam, when the shift knob of the shift lever shifted to the parking position is released. And an assist spring for assisting the movement of the detent pin to the first position by the detent spring.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION A key interlock device according to the present invention is an assist spring for assisting a movement of a detent pin to a first position by a detent spring when a shift knob of a shift lever shifted to a parking position is released. By providing the above, it becomes unnecessary to press the shift knob with a large force.

[0023]

An embodiment of the present invention will be described below with reference to the drawings. 1 to 8 show an embodiment of the present invention. In FIG. 1, 2 is a shift lever of an automatic transmission connected to an internal combustion engine (not shown), and 4 is a lever shaft. The shift lever 2 has a lower end of a lever shaft 4 pivotably supported by a support shaft 6 on a bracket (not shown).

A grip 8 and a shift knob 10 are provided on the upper end of the lever shaft 4. In the lever shaft 4,
A shift rod 12 whose one end is in contact with the shift knob 10.
Is provided so as to be movable in the axial direction. A mounting body 14 is attached to the other end of the shift rod 12 to provide the mounting body 14
The detent pin 16 is attached to and is provided.

The detent pin 16 is provided in such a manner that it is inserted through a pin hole 18 formed in the lever shaft 4 and has an elongated hole shape so as to project outward. A detent spring 20 is elastically mounted on the mounting body 14.

The shift knob 10 is pressed to
The detent pin 16 is moved through the shift rod 12 from the first position (the position above the pin hole 18 in FIG. 1) to the second position (FIG. 1).
Position below the pin hole 18). The detent spring 20 urges the detent pin 16 to move from the second position to the first position by releasing the shift knob 10.

When the shift lever 2 swings, for example, as shown in FIG. 1, a first speed position (1) and a second speed position (2).
And drive position (D) and neutral position (N)
A reverse position (R), a parking position (P),
The shift operation is performed.

At this time, the shift lever 2 pushes the shift knob 10 to move the detent pin 16 to the second position, and shifts to the desired shift position to shift the shift knob 1 to the desired position.
When 0 is released, the detent pin 16 is moved to the first position by the detent spring 20, is engaged with the step portion of the detent plate (not shown) corresponding to each shift position, and is prevented from moving from the selected shift position. .

Further, the automatic transmission is provided with a key interlock device 22 for locking / unlocking the operation of an ignition key (not shown) of the internal combustion engine. The key interlock device 22 is provided with a support 24 attached to a bracket (not shown) that supports the shift lever 2, and a cam 26 is rotatably supported by a cam shaft 28 on the support 24.

The cam 26 is provided with an engagement groove 30 for engaging and disengaging the detent pin 16, and one end side of the key interlock cable 32 is connected by a connecting body 34. The key interlock cable 32 is held by a cable holding portion (not shown) attached to the support 24,
The other end is provided so as to communicate with a lock portion provided on a key cylinder of an ignition key of an internal combustion engine (not shown).

As shown in FIG. 3, in the cam 26, when the shift lever 2 is shifted to the parking position (P), the detent pin 16 which is moved to the second position by pushing the shift knob 10 is engaged with the engagement groove 30. Is engaged with.

The cam 26 having the detent pin 16 engaged with the engaging groove 30 is unidirectionally moved by the detent pin 16 which is moved to the first position by the detent spring 20 when the shift knob 10 is released and operated as shown in FIG. It

When the shift knob 10 is pushed, the cam 26 which is operated in one direction by the detent pin 16 is moved in the other direction by the detent pin 16 which is moved to the second position against the tent spring 20 as shown in FIG. Be operated.

The key interlock device 22 is provided with the cam 2
By the operation of 6, the key interlock cable 32 is moved forward and backward in the longitudinal direction, and the operation of the ignition key of the internal combustion engine is locked / released.

The key interlock device 22 is provided with an assist spring 36. As shown in FIGS. 3 and 4, the assist spring 36 has a parking position (P).
When the shift knob 10 of the shift lever 2 that has been shifted to the position is released, the detent spring 20 assists the movement of the detent pin 16 to the first position.

As shown in FIG. 2, the assist spring 36 is formed in a rectangular plate shape and has one end fixed to the support shaft 38 as a fixed end and the other end free. One end of the support shaft 38 is attached to the support body 22, and the other end of the support shaft 38 is provided so as to protrude through the insertion hole 40 formed in the cam 26 around the cam shaft 28.

As a result, the support shaft 38 does not hinder the rotation of the cam 26, and the one end side of the assist spring 36 is attached to the portion protruding from the cam 26.

Further, the assist spring 36 has a structure shown in FIG.
As shown in FIG. The notch 42 is
As shown in FIG. 6, when the shift knob 10 of the shift lever 2 that has been shifted to the parking position (P) is pushed, the detent pin 16 that is moved to the second position against the detent spring 20 is brought into contact. The assist spring 36 is formed and provided so as to avoid it and allow the movement to the second position.

Next, the operation of this embodiment will be described.

In the key interlock device 22, as shown in FIG. 3, when the shift knob 10 of the shift lever 2 in the reverse position (R) is pushed, the detent pin 16 is moved to the second position while compressing and deforming the detent spring 20. It

Detent pin 16 moved to the second position
Is engaged with the engagement groove 30 of the cam 26 when the shift lever 2 is shifted to the parking position (P).

At this time, the detent pin 16 engages with the engaging groove 30 of the cam 26 while pressing the free end side of the assist spring 36, thereby causing the assist spring 36 to bend and deform.

When the shift lever 10 is shifted to the parking position (P) and the shift knob 10 is released, as shown in FIG. 4, the detent spring 20 is compressed and deformed.
The restoring force moves the detent pin 16 to the first position.

At this time, the detent pin 16 is moved to the first position by the restoring force of the assist spring 36 which is curved and deformed, along with the restoring force of the detent spring 20.

As a result, the detent pin 16 is engaged with the engaging groove 3
As shown in FIG. 5, the cam 26 engaged with 0 is operated in one direction by the detent pin 16 which is moved to the first position by the detent spring 20 and the assist spring 36, and pushes the key interlock cable 32 in the longitudinal direction. To operate.

Further, in the shift lever 2, the detent pin 16 moved to the first position is engaged with a step portion of the detent plate (not shown) corresponding to the parking position (P), and the shift lever 2 is prevented from moving from the parking position (P). To be done.

As shown in FIG. 6, when the shift knob 10 of the shift lever 2 at the parking position (P) is pushed, the key interlock device 22 depresses the detent spring 2.
The detent pin 16 engaged with the engagement groove 30 of the cam 26 is moved to the second position while compressing and deforming 0.

At this time, the detent pin 16 moved to the second position is prevented from contacting with the assist spring 36 by the notch 42 formed in the assist spring 36, passes through the notch 42 and is moved to the second position. It

Therefore, the force required to push and operate the shift knob 10 of the shift lever 2 at the parking position (P) is only the force required to compress and deform the detent spring 20, and the assist spring 36 is bent and deformed. Does not require power.

As a result, the detent pin 16 is engaged with the engaging groove 3
The cam 26 engaged with 0 is moved in the other direction by the detent pin 16 moved to the second position, as shown in FIG.
The key interlock cable 32 is pulled in the longitudinal direction.

Detent pin 16 moved to the second position
As shown in FIG. 7, when the shift lever 2 is shifted to the reverse position (R), the engagement of the cam 26 with the engagement groove 30 is released.

When the shift lever 2 is shifted to the reverse position (R), the detent pin 16 slightly pushes up the free end side of the assist spring 36, and the cam 26
Although the engagement with the engaging groove 30 is released, the operating force at this time is a force for manually swinging the shift lever 2 and therefore does not become a large load.

When the shift lever 10 is shifted to the reverse position (R) and the shift knob 10 is released, as shown in FIG.
As shown in, the detent pin 16 is moved to the first position by the restoring force of the compressed and deformed detent spring 20.

In the shift lever 2, the detent pin 16 moved to the first position is engaged with a step portion corresponding to the reverse position (R) of the detent plate (not shown), and the shift lever 2 is prevented from moving from the reverse position (R). .

Thus, this key interlock device 2
2 is provided with an assist spring 36 for assisting the movement of the detent pin 16 to the first position by the detent spring 20 when the shift knob 10 of the shift lever 2 that has been shifted to the parking position (P) is released. Therefore, the pushing operation of the shift knob 10 does not require a large force.

Therefore, this key interlock device 22
Can reduce the operation load of the shift knob 10 at all the shift positions, and can improve the operability. Further, since the key interlock device 22 does not weaken the biasing force of the detent spring 20,
The reliability of the operation of the key interlock device 22 can be improved,
Since only the assist spring 36 is provided, it can be implemented without changing the current layout and the like, which is practically advantageous.

[0057]

As described above, the key interlock device of the present invention assists the movement of the detent pin to the first position by the detent spring when the shift knob of the shift lever shifted to the parking position is released. By providing the assist spring, a large force is not required for pushing the shift knob.

Therefore, the key interlock device is
The operation load of the shift knob can be reduced and the operability can be improved. In addition, since the detent spring urging force is not weakened, the certainty of the operation of the key interlock device can be improved and the assist spring is provided. Therefore, it can be implemented without changing the current layout.

[Brief description of drawings]

FIG. 1 is a side view of a shift lever provided with a key interlock device according to an embodiment of the present invention.

FIG. 2 is a front view of a key interlock device.

FIG. 3 is a side view of the key interlock device in a state where a shift operation is performed from the reverse position to the parking position.

FIG. 4 is a side view of the key interlock device in a state where a shift knob is released and operated in a parking position.

FIG. 5 is a side view of the key interlock device in a state where the release operation of the shift knob is completed at the parking position.

FIG. 6 is a side view of the key interlock device in a state where the shift knob is pushed and operated in the parking position.

FIG. 7 is a side view of the key interlock device in a state where a shift operation is performed from the parking position to the reverse position.

FIG. 8 is a side view of the key interlock device when the shift knob is released in the reverse position.

FIG. 9 is a side view of a shift lever showing a conventional example.

FIG. 10 is a cross-sectional view of the lever shaft in a state where the shift knob is released and operated.

FIG. 11 is a cross-sectional view of the lever shaft when the shift knob is pressed and operated.

FIG. 12 is a side view of the key interlock device in a state where a shift operation is performed from the reverse position to the parking position.

FIG. 13 is a side view of the key interlock device in a state where the shift knob is released and operated in the parking position.

[Explanation of symbols]

 2 shift lever 10 shift knob 12 shift rod 16 detent pin 20 detent spring 22 key interlock device 24 support 26 cam 28 cam shaft 30 engagement groove 32 key interlock cable 34 connecting member 36 assist spring 38 support shaft 40 insertion hole 42 notch

Claims (2)

[Claims] 1. A detent pin that is moved from a first position to a second position by pressing a shift knob is provided on a shift lever that switches the engagement state of an automatic transmission connected to an internal combustion engine, and the detent pin is moved from the second position. A detent spring for urging the detent pin to move to the first position is provided, and the detent pin is moved to the first position by the detent spring when the shift knob of the shift lever shifted to the parking position is released and operated in one direction. A cam is provided which is operated in the other direction by the detent pin that is moved to the second position against the detent spring when the shift knob of the shift lever that is operated and shifted to the parking position is pushed. Lock / unlock the operation of the ignition key of the internal combustion engine on the cam In a key interlock device provided by connecting a key interlock cable, assisting the movement of the detent pin to the first position by the detent spring when the shift knob of the shift lever shifted to the parking position is released. A key interlock device, which is provided with an assist spring that operates. 2. The abutment of the assist spring with the detent pin that is moved to a second position against the detent spring when the shift knob of the shift lever that is shifted to the parking position is pushed. The key interlock device according to claim 1, wherein a notch portion for avoiding the above is provided.