JPH0999750A - Key interlock mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a key interlock mechanism which can be inexpensively manufactured. SOLUTION: A key interlock mechanism applied to a shift lever device 10 is provided with an interlock link release rotatably journalled to a pin 50 on which the vehicle longitudinal direction is set as the axial direction and a plate interlock 52 rotatably journalled to a pin 56 on which the vehicle vertical direction is set as the axial direction. When a shift lever 12 is shifted to a parking range, the interlock link release is rotated by a bracket 22, and the plate interlock 52 is pressed by the interlock link release, and the plate interlock 52 is rotated against energizing force of a spiral spring 58 to energize the plate interlock 52 in the lock direction. Therefore, a key interlock cable 62 is pulled out, and a lock condition of a key cylinder 64 is released.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle key interlock mechanism.

[0002]

2. Description of the Related Art In a shift lever device used for shifting an automatic transmission of an automobile, a shift lever device and a key cylinder are connected to each other, and the key cylinder is operated only when the shift lever is shifted to a specific shift range. It is equipped with a key interlock mechanism that allows the ignition key to be pulled out, which prevents accidental removal of the ignition key.

In this type of key interlock mechanism, it is known that the key cylinder of the ignition switch is constrained by a key interlock solenoid.

That is, in this type of key interlock mechanism, a sensor for detecting the position of the shift lever is provided, and when this sensor detects a state in which the shift lever is shifted to the parking range, the shift lock control computer causes the key to be locked. Energize the interlock solenoid.

The key interlock solenoid is disengaged from the key cylinder in a non-energized state, allows rotation in a predetermined direction by the ignition key of the key cylinder, and engages with the key cylinder when energized. Block the rotation of the key cylinder and block the ignition key from being pulled out.

[0006]

However, in the key interlock mechanism having the above-mentioned configuration, expensive parts and devices such as a key interlock solenoid and a shift lock control computer are frequently used, which causes a problem of high cost. is there.

In view of the above facts, an object of the present invention is to obtain a key interlock mechanism which can be manufactured at a low cost.

[0008]

In the key interlock mechanism according to the first aspect, an arbitrary shift range is selected from a plurality of shift ranges including a parking range by shifting the shift lever in a predetermined direction. A key interlock mechanism that is applied to a possible shift lever device and that releases the ignition key from the key cylinder by releasing the locked state of the key cylinder only when the shift lever is shifted to the parking range. A parking position detecting member that is rotatably supported by a front-rear axis having an axis in the front-rear direction of the vehicle and that rotates a predetermined angle around the front-rear axis by a pressing force of the shift lever when shifting to the parking range. When,
It is rotatably supported by a vertical shaft having a vehicle height direction as an axial direction and connected to the key cylinder via a cable, and at a predetermined angle around the vertical shaft according to the rotation of the parking position detecting member. And an operating member which is rotated to release the locked state of the key cylinder and which is always biased by a biasing member in a locking direction opposite to the rotation direction.

In the key interlock mechanism having the above structure,
When shifting the shift lever to the parking range,
The parking position detecting member is pressed by the shift lever, and the parking position detecting member is rotated around the front-rear axis by a predetermined angle. Further, by rotating the parking position detecting member, the operating member is rotated around the vertical axis by a predetermined angle against the biasing force of the biasing member.

As a result, the cable attached to the operating member is operated according to the rotation of the operating member, and the locked state of the key cylinder is released. Therefore, the ignition key can be removed from the key cylinder.

If the shift lever is shifted from this state to a shift range other than the parking range,
The pressing force applied to the parking position detecting member by the shift lever is released. Therefore, the urging force of the urging member causes the operating member to rotate at a predetermined angle in a direction opposite to the rotation direction at the time of unlocking, and is held at a predetermined position. by this,
The tension with which the operating member pulls out the cable is released, and the key cylinder is locked again.

Thus, unlike the conventional key interlock mechanism, the present key interlock mechanism does not require expensive parts and devices such as a key interlock solenoid and a shift lock control computer, and is inexpensive. Can be manufactured.

[0013]

FIG. 1 is a perspective view showing a main part of a shift lever device 10 to which a key interlock mechanism according to an embodiment of the present invention is applied. 2 is a front view of FIG. 1, and FIG. 3 is a plan view of FIG.

As shown in these figures, the shift lever device 10 includes a shift lever 12.

The shift lever 12 is a rod-shaped member that is long in the vertical direction of the vehicle (not shown) (the direction of arrow Z in FIGS. 1 and 2 and the opposite direction), and is in a state of protruding upward to the upper end of the block 14. It is integrally provided in.

The lower end of the block 14 is attached to the shaft 18 by a pin 16 and is rotatable about the pin 16 in the axial direction of the shaft 18.

The shaft 18 is rotatable about its own axis, and the block 14 mounted on the shaft 18 is rotatable about the axis of the shaft 18.

That is, the shift lever 12 serves as the axis of the shaft 18 in the longitudinal direction of the vehicle (the arrow Y in FIGS. 1 and 3).
Direction and the opposite direction) and the pin 1
It is rotatable about the axis 6 in the width direction of the vehicle (the arrow X direction in FIGS. 1 to 3 and the opposite direction).

The end portion of the shaft 18 has a link plate 20.
Is fixed to one end of the link plate 20, and the other end of the link plate 20 is connected to an automatic transmission (both not shown) via a motion transmission mechanism such as a rod.

On the other hand, a bracket 22 is integrally fixed to the side surface of the block 14. A circular hole 24 opening upward is formed in the bracket 22, and a moderation pin 26 and a coil spring 28 are housed inside the hole 24.

The moderation pin 26 is a rod-shaped member elongated in the axial direction of the hole 24, and has an upper end formed in a hemispherical shape.
Coil spring 2 with its upper end protruding from hole 24
8 always urges upward.

Further, a housing 30 is arranged above the block 14. The housing 30 is made of a resin material such as ABS resin and has a box shape, and is fixed to a floor (not shown) in the vehicle interior.

On the ceiling portion 30A of the housing 30,
“P”, “R”, “N” depending on the shift range of the vehicle
A plurality of characters 32 such as is printed.

Here, for example, "P" represents the parking range, and "R" represents the reverse range. Further, "D" represents a drive range.

Further, guide grooves 34 are formed on the sides of these characters 32. The guide groove 34 is bent in the front-rear direction (the arrow Y direction in FIGS. 1 and 3 and the opposite direction) and the left-right direction (the arrow X direction in the FIGS. 1 to 3 and the opposite direction) of the ceiling portion 30A, and the whole is formed. Are formed in a zigzag shape.

In the guide groove 34, the shift lever 12
Is penetrated, and by operating the shift lever 12 along the guide groove 34, it is possible to shift to a desired shift range.

Below the housing 30 having the above structure, a moderation plate 38 is arranged so as to face the moderation pin 26.

On the back surface of the moderation plate 38, a moderation groove (not shown) having a concave shape is formed so as to extend downward as a whole, and the upper end side of the moderation pin 26 is inserted therein.

The moderation groove is bent in zigzag corresponding to the movement locus of the moderation pin 26 that moves integrally with the shift lever 12, and the width of the moderation groove (that is, with respect to the movement direction of the moderation pin 26). The length in the right angle direction) is substantially equal to the diameter of the tip of the moderation pin 26. Furthermore, the bottom of the moderation groove is formed in a continuous uneven shape,
When the moderation pin 26 is located in a specific shift range, the movement to another shift range is restricted by the biasing force of the coil spring 28 and the concavity and convexity of the moderation groove.

As a result, the moderation plate 38 (moderation groove) restricts the movement of the moderation pin 26 while controlling the moderation pin 26.
Is guided to a specific shift range.

An interlock link release 46 as a parking position detecting member is arranged below the moderation plate 38 having the above structure.

This interlock link release 46
Is a plate-shaped member that is elongated in the vehicle up-down direction, and has a through hole 48 formed in the vehicle longitudinal direction at an intermediate portion in the longitudinal direction. A pin 50 as a front-rear shaft is disposed through the through hole 48, and the interlock link release 4
6 is rotatable about the axis of the pin 50 (the direction of arrow A in FIGS. 1 and 2 and the opposite direction).

Also, interlock link release 46
Is bent in a hook shape, and a rectangular pressed portion 46A is provided at the tip thereof.

This pressed portion 46A is the shift lever 12
Bracket shifts to the parking range
Face the side of. As a result, the pressed portion 46A is pressed by the shift lever 12, and the interlock link release 46 is rotated by a predetermined angle in the counterclockwise direction (direction of arrow A in FIGS. 1 and 3).

Further, interlock link release 4
The lower end of 6 is a pressing portion 46B.
A plate interlock 52 as an operating member is arranged near 6B.

The plate interlock 52 is a plate-like member formed in an L shape in plan view, and is located at the center of the intersection of the L shape in the vehicle height direction (the arrow Z direction in FIGS. 1 and 2 and its direction). A through hole 54 is formed so as to penetrate in the opposite direction. A pin 56 as a vertical axis is arranged through the through hole 54, and the plate interlock 52 is rotatable around the axis of the pin 56 (the arrow B direction in FIGS. 1 and 3 and the opposite direction). There is.

The L-shaped one end side of the plate interlock 52 is a pressed portion 52A, which is always in contact with the pressing portion 46B of the interlock link release 46. That is, the interlock link release 46 rotates clockwise around the pin 50 (direction of arrow A in FIGS. 1 and 3).
When the plate interlock 52 is rotated to the left, the pressed portion 52A of the plate interlock 52 pushes the pressing portion 4A of the interlock link release 46.
It is configured to be pressed by 6B and rotate by a predetermined angle.

Further, the plate interlock 52 is provided with a spiral spring 58 as a biasing member. The spiral spring 58 has a plate interlock 52 at one end.
, And the other end is locked to the pin 56, so that the plate interlock 52 is always rotated clockwise in a plan view (see FIG. 1).
And in the direction opposite to the arrow B direction in FIG. 3). Thus, the plate interlock 52 maintains a predetermined state when the pressing force is not applied.

Further, this plate interlock 52
A columnar cable locking portion 60 is provided at the other end of the key interlocking cable 62, and one end of the key interlock cable 62 is locked.

The other end of the key interlock cable 62 is attached to a cam (not shown) provided inside the key cylinder 64, and the key cylinder 64 is locked according to the tension of the key interlock cable 62. It is configured to be in the state and the unlocked state.

Next, the operation of the present embodiment will be described. In the shift lever device 10 having the above configuration, the shift lever 12
When is operated back and forth and left and right along the guide groove 34, the moderation pin 26 is guided by the moderation groove of the moderation plate 38 and moves to a specific shift position corresponding to the operation of the shift lever 12 with a sense of moderation. And shifts to a specific shift range.

Here, as shown in FIGS. 4 and 5,
When the shift lever 12 is shifted to the parking range, the side surface of the bracket 22 of the shift lever 12 contacts the pressed portion 46A of the interlock link release 46, and the interlock link release 46 moves in the same direction as the shift lever 12 moves. Is pushed to. by this,
The interlock link release 46 rotates at a predetermined angle in the clockwise direction (the direction of arrow A in FIGS. 1 and 2) about the pin 50, that is, after the side surface of the bracket 22 contacts the pressed portion 46A, the shift lever 12 is completely moved. It is rotated in accordance with the movement stroke until it is shifted to the parking range.

Then, the pressing portion 46B of the rotated interlock link release 46 presses the pressed portion 52A of the plate interlock 52. As a result, the plate interlock 52 is rotated about the pin 56 in the counterclockwise direction (arrow B direction in FIGS. 1 and 3) by a predetermined angle against the biasing force of the spiral spring 58.

Further, as the plate interlock 52 rotates, the key interlock cable 62 locked to the cable locking portion 60 of the plate interlock 52 is rearwardly of the vehicle with a predetermined tension (see FIGS. 1 and 3). It is pulled out in the direction of arrow C) and the cam inside the key cylinder 64 is operated. As a result, the locked state of the key cylinder 64 is released, and the ignition key can be pulled out.

On the other hand, when the shift lever 12 is shifted to a position other than the parking range from this state, the pressing force applied to the interlock link release 46 by the bracket 22 is released, so that the plate interlock is caused by the urging force of the spiral spring 58. The lock 52 turns to the right (see FIGS. 1 and 3).
In the direction opposite to the arrow B). As a result, the pressing portion 46B of the interlock link release 46 is pressed by the pressed portion 52A of the plate interlock 52, which is opposite to the pressing force, and the interlock link release 46 rotates counterclockwise about the pin 50 (FIG. 1). And the opposite arrow A in FIG.
Direction).

When the plate interlock 52 is rotated by the urging force of the spiral spring 58, the tension of the key interlock cable 62 is reduced, whereby the cam provided inside the key cylinder 64 operates, The key cylinder 64 is locked. As a result, the ignition key is prevented from being pulled out until the shift lever 12 is shifted to the parking range again.

As described above, in the key interlock mechanism applied to the shift lever device 10 having the above structure, the interlock link release 46, the plate interlock 52, and the key interlock cable 62 are provided.
Since the configuration in which the shift lever 12 is shifted to the parking range is detected by mechanical and simple motion transmission, and the lock state and the unlock state of the key cylinder 64 are controlled, a key interlock solenoid and a shift lock are provided. Costs can be reduced without requiring expensive parts or devices such as a control computer.

[0048]

As described above, in the key interlock mechanism according to the present invention, the parking position detecting member,
A mechanical and simple motion transmission mechanism consisting of an operating member and a cable detects that the shift lever has been shifted to the parking range, and locks and unlocks the key cylinder. The cost can be reduced without requiring an expensive control member.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part of a shift lever device to which a key interlock mechanism according to an embodiment of the present invention is applied.

FIG. 2 is a front view of a shift lever device to which a key interlock mechanism according to an embodiment of the present invention is applied.

FIG. 3 is a plan view of a shift lever device to which a key interlock mechanism according to an embodiment of the present invention is applied.

FIG. 4 is a front view corresponding to FIG. 2, showing the unlocked state of the key interlock mechanism according to the embodiment of the present invention.

FIG. 5 is a plan view corresponding to FIG. 3, showing the unlocked state of the key interlock mechanism according to the embodiment of the present invention.

[Explanation of symbols]

10 shift lever device 12 shift lever 46 interlock link release (parking position detection member) 50 pin (front and rear axis) 52 plate interlock (operating member) 56 pin (up and down axis) 58 spiral spring (biasing member) 62 key interlock Cable (cable) 64 key cylinder

Claims (1)

[Claims] 1. The present invention is applied to a shift lever device in which an arbitrary shift range can be selected from a plurality of shift ranges including a parking range by shifting the shift lever in a predetermined direction. A key interlock mechanism that unlocks the key cylinder only when it is shifted to the parking range and allows the ignition key to be removed from the key cylinder. A parking position detection member that is pivotally supported and that rotates a predetermined angle around the front-rear axis by the pressing force of the shift lever when shifting to the parking range, and a vertical axis that has the vehicle height direction as the axial direction. It is pivotally supported and connected to the key cylinder via a cable, According to the rotation of the placement detecting member, the lock state of the key cylinder is released by rotating the key cylinder about the vertical axis by a predetermined angle, and the biasing member always urges the lock cylinder in a locking direction opposite to the rotation direction. A key interlock mechanism, comprising: