JPH0630527Y2 - Select lever device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a selector lever device for an automatic transmission, and more particularly to an improvement of a selector lever with a shift lock.

[Prior Art] In recent years, in an automobile with an automatic transmission (AT vehicle), there is a case where a sudden start causes an accident at the time of starting. As a countermeasure against this, when the select lever is shifted to a parking range, the select lever is operated by an electromagnetic actuator. For example, Japanese Utility Model Laid-Open No. 62-202433 discloses a lock mechanism that locks the button pressing operation to restrict the movement of the select lever to another range. This prior art has a structure in which a lock plate attached to a select lever is directly locked by an electromagnetic actuator.

Separately from this, there is proposed a select lever device including a lock mechanism that locks a button pressing operation of the select lever via a lock plate operated by the electromagnetic actuator.

[Problems to be Solved by the Invention] When the button pressing operation of the select lever is locked via the lock plate, the lock plate is rotatably arranged along the side wall of the select lever and provided on the lock plate. The engagement pin provided on the rod that moves up and down by the button of the select lever is engaged and locked in the engagement groove, and is released and unlocked so that when the button is pressed in the locked state , The force that pushes the engagement groove strongly with the engagement pin to push the lock plate to the select lever side acts, and the bending force acts on the rotating shaft of the lock plate to increase the play.
In particular, there is a problem that the backlash becomes large if there is a variation in component accuracy. Also, when rotating the select lever,
There is also a problem that the lock plate may come into contact with the side wall to generate an abnormal noise, and further, the lock plate is difficult to rotate smoothly.

Therefore, an object of the present invention is to provide a select lever device that can solve all the above problems with a simple configuration.

[Means for Solving the Problems]

In order to achieve the above object, the present invention provides a select lever device including a lock mechanism that locks a button pressing operation of a select lever via a lock plate operated by an electromagnetic actuator when the select lever is shifted to a parking range. A resin bush is interposed between the lock plate rotatably supported along the side wall of the select lever and the side wall.

[Action]

The resin bush of the above structure prevents the lock plate from falling to the select lever side even if the select lever button is pressed with the select lever engaging pin engaged with the lock plate engaging groove. In addition, the lock plate does not come into contact with the side wall of the select lever to generate an abnormal noise, and the rotation of the lock plate is always smoothly performed.

〔Example〕

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

In FIG. 1 and FIG. 2, reference numeral 1 is a select lever of an automatic transmission mounted on an AT vehicle, and the select lever 1 is moved forward and backward by a pivot 3 supported horizontally by support frames 2 and 2. It is pivotally supported so as to be pivotable in the direction, and a grip 4 for pivotally operating the lever is provided on the upper portion. The grip 4 is provided with a button 5 that can be operated by the finger of the hand holding the grip 4. The button 5 is fitted in a hollow lever body 6 so as to be vertically movable, and also has a compression spring 7
Is linked to the rod 8 which is held upward by the button 8, and when the button 5 is operated, the rod 8 is moved downward against the resilience of the spring 7, and when the button 5 is released, the rod 8 is pushed by the spring 7. It is designed to move upwards with power.

A pin 9 is horizontally inserted and fixed to the rod 8,
The lever 8 projects on both sides of the lever body 6 and can move up and down within the vertical movement range of the rod 8. One of the pins 9 serves as an engagement pin 9a that engages with the engagement window 10a of the detent plate 10 formed integrally on the upper portion of the support frame 2, and the other of the pins 9 serves as a lock pin 9b described later. Has become.

On the other hand, one side of the pivot shaft 3 projects outward from the support frame 2, and the lock plate 12 is rotatably supported by the pivot shaft 3 of the projecting portion via a bush 11. The lock plate 12 is bifurcated from its pivot portion, one of which is bent so as to rotate along the side wall 6a of the lever main body, and the tip portion thereof is an actuator 13a of the electromagnetic actuator 13.
Is locked to the tip end of the lock via a spring 14 and faces the operating element of the other lock release button 15. A resin bush 16 fitted on the lock plate 12 side is interposed between the side wall 6a of the lever body and the lock plate 12. An engaging groove 12a that engages with and disengages from the lock pin 9b when the lock plate 12 rotates is formed in a portion of the lock plate 12 that faces the lock pin 9b.

When the ignition switch of an AT vehicle is in the ON (including start) position and when the brake pedal is stepped on, the electromagnetic actuator 13 energizes the electromagnetic coil to move the lock lever 12 clockwise through the actuator 13a in FIG. When the selector lever 1 is rotated to release the engagement between the engagement groove 12a and the lock pin 9b, and the select lever 1 is shifted to the parking range, it is turned off and the lock pin 9b is engaged with the engagement groove 12a of the lock plate 12. In this state, the downward movement of the rod 8 and the pin 9 due to the operation of the button 5 is prevented. In addition, the lock release button 15 can be manually operated when the electric system of the electromagnetic actuator 13 fails and the lock is not released even when the brake pedal is depressed.
The lock is released by rotating 12.

In the select lever device having such a configuration, when the select lever 1 is shifted to the parking range,
As shown in FIG. 3, since the lock pin 9b is engaged with the engagement groove 12a of the lock plate and is in the locked state, even if the button 5 of the grip 4 is operated, the select lever 1 is rotated to change the position. Can not be moved to the range. In addition, even if the driver leaves the driver's seat while the engine is running and the select lever 1 is shifted to the parking range,
The AT vehicle will not run away due to the selection lever 1 rotating due to machine vibration or the like.

In the locked state of FIG. 3, when the ignition switch is in the ON position and the brake pedal is depressed, the electromagnetic actuator 13 is energized, the actuator 13a moves in the arrow direction, and the lock plate 12 rotates in the arrow direction to lock. The engagement of the engagement groove 12a with the pin 9b is released, and the lock of the lock pin 9b is released to be in the state shown in FIG. When the state shown in FIG. 4 is reached, the grip 4 is grasped and the button 5 is operated to move the lock pin 9b and the engagement pin 9a downward, and the select lever 1 is rotated in the arrow direction to another range. Shift and AT
Drive the car.

When the select lever 1 is moved from the shift state other than the parking range to the parking range, the electromagnetic actuator 13 operates and the lock plate 12 rotates counterclockwise from the state shown in FIG. 4 to lock it as shown in FIG. The pin 9b and the engagement groove 12a are engaged with each other to be in a locked state. In this locked state, when the electromagnetic actuator 13 does not operate and the lock cannot be released due to a failure of the electric system, when the lock release button 15 is manually pressed, the operator held by the spring 15a moves and the lock plate is released. 12 Press to rotate the lock plate clockwise to unlock. Further, when the lock plate 9 is pressed by the lock pin 9b through the engagement groove 12a by operating the button 5 in the locked state, the lock plate 12 tends to fall toward the select lever 1 side. Since the bush 16 is interposed, the lock plate 12 is prevented from falling. Further, even if there is some variation in accuracy in the pivotal support portion of the select lever 1, the lock plate 12 itself and its pivotal support portion, the bush 11, etc., the variation is absorbed by the resin bush 16 and the select lever 1 and the lock plate 12 are Rotation is performed smoothly. Further, when the select lever 1 is rotated to change the range shift, the side wall 6a of the select lever body and the facing surface of the lock plate 12 do not come into direct contact with each other, so that no abnormal noise is generated. If the resin bush 16 wears down after a long period of use, the function is restored by replacing only the resin bush 16.

[Effect of device]

As described above, according to the select lever device of the present invention, since the resin bush is interposed between the side wall of the select lever and the lock plate, the following effects can be obtained.

(1). Even if there are variations in parts accuracy, the resin bushes can absorb it, and the parts accuracy and assembly accuracy can be relaxed.

(2). There is no direct contact between the side wall of the select lever and the side surface of the lock plate, and no abnormal noise is generated.

(3). Although the structure is simple and inexpensive, the select lever and the lock plate can be smoothly rotated, and the function can be improved.

(Four). It prevents the backlash of the lock plate from increasing, and can be easily replaced when the resin bush wears.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an essential part showing an embodiment of the present invention, FIG. 2 is a perspective view of the entire select lever device, FIG. 3 and FIG.
The figure is a diagram for explaining the operation. 1 ... Select lever, 2 ... Support frame, 3 ... Pivot shaft,
4 ... Grip, 5 ... Button, 6 ... Lever body, 6a
...... Side wall, 7 ...... Spring, 8 ...... Rod, 9 ...... Pin, 9a
...... Engagement pin, 9b …… Lock pin, 10 …… Detent plate, 10a …… Engagement window, 11 …… Bush, 12 …… Lock plate, 12a …… Engagement groove, 13 …… Electromagnetic actuator, 13a ...... Operator, 14 ...... Spring, 15 …… Unlock button, 16 …… Resin bush.

Claims (1)

[Scope of utility model registration request] 1. A select lever device including a lock mechanism for locking a button pressing operation of a select lever via a lock plate operated by an electromagnetic actuator when the select lever is shifted to a parking range. A select lever device, wherein a resin bush is interposed between a lock plate rotatably supported along the side wall and the side wall.