JPH0437788Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a shift lever locking device in an automatic vehicle equipped with an automatic transmission.

(Prior Art) Conventionally, automatic vehicles have been equipped with a sudden start prevention device that prevents the vehicle from suddenly starting when the shift lever is switched from the neutral or parking position to the drive range or reverse range. Various proposals have already been made.

For example, Japanese Utility Model Application Publication No. 61-5236 states that when the shift lever is in the neutral or parking position, if certain conditions such as operating the brake are not met, a solenoid is turned on to engage the shift lever. Disclosed is a device in which the shift lever is stopped and the range cannot be changed using the shift lever.

(Problem that the invention attempts to solve) However, since the shift lever is configured to be locked while the solenoid is in the on state,
If the locked state is maintained for a long time, the solenoid continues to be energized, resulting in the solenoid burning out. Furthermore, since the solenoid is arranged perpendicularly to the rotational plane of the shift lever, there is a problem in that the space in the width direction of the vehicle body becomes large.

On the other hand, if a vertically swingable lock plate that prevents the engagement pin of the shift lever from disengaging from the positioning step of the position plate is provided to prohibit operation of the shift lever, this lock plate There is a problem in that it is difficult to secure space for vertically arranging the solenoid that operates the solenoid up and down.

In view of the above-mentioned conventional problems, the present invention aims to provide a shift lever locking device that does not cause the risk of solenoid seizure even if the shift lever is maintained in the locked state, and that can be arranged in a space that can be adjusted to fit the console box. purpose.

(Means for Solving the Problems) In order to achieve the above object, the present invention locks a lock plate that locks the shift lever from the neutral or parking position to any other position between the lock position and the unlock position. A slide member is provided so as to be swingable in the lock plate, and a slide member is provided to switch the lock plate between a lock position and an unlock position by moving in a direction that intersects the lock plate on substantially the same plane as the lock plate swing direction, and the lock plate is slidable. The present invention is characterized in that it is provided with a means for biasing the member in the direction of pressure contact, a solenoid for moving the slide member, and an off timer that stops energizing the solenoid after a predetermined period of time has elapsed after an activation command.

(Function) Since the present invention has the above configuration, when the engine is started and the shift lever is in the neutral or parking position, if an activation command is issued to the solenoid because the brake is not depressed, the solenoid is activated. As the slide member moves, the lock plate, which is urged to come into pressure contact with the slide member, swings to the lock position and the shift lever is locked, prohibiting shifting of the shift lever and preventing sudden start. Ru. Also, after a predetermined period of time has passed after the solenoid is activated, an off timer turns off the power to the solenoid.
Since the slide member is stopped at that position, the lock plate remains in the locked position, and the solenoid is prevented from burning due to the de-energization.

On the other hand, when the brake is stepped on, a reverse operation command is issued to the solenoid, the slide member moves, the lock plate moves to the unlocked position, and the shift lever can be shifted.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. 1 to 3, reference numeral 1 indicates a shift lever of an automatic transmission, and reference numeral 2 indicates a position plate thereof. The shift lever 1 is provided with an engagement pin 3 that moves in the axial direction by pressing an appropriate button, and by engaging the engagement pin 3 with a positioning step 4 formed on the position plate 2, Move the shift lever 1 to Park (hereinafter referred to as P), Reverse (hereinafter referred to as R), and Neutral (hereinafter referred to as R).
(hereinafter referred to as N), drive (hereinafter referred to as D), low gear (hereinafter referred to as L), second gear (hereinafter referred to as 2
It is configured so that it can be selectively positioned at each position.

A groove-shaped slide guide 5 with an open upper surface is provided adjacent to the position plate 2. On one side of the inside of the slide guide 5, there is a lock plate which is pivotably supported vertically via a support pin 7 by a bracket 6 protruding from the widthwise center of the one side wall 5a and the bottom wall. 8 is placed,
A slide member 9 is swingably arranged on the other side. A wide portion 9a corresponding to the inner width of the slide guide 5 is formed at the tip of the slide member 9, and an inclined cam surface that engages with an inclined cam surface 10 formed on the lower surface of the tip of the lock plate 8. 1
1 is formed. An engagement protrusion 12 is formed at the upper end of the lock plate 8 to engage with the engagement pin 3 at the N position to prevent the shift lever 1 from moving to the D position. Further, a leaf spring 13 that biases the lock plate 8 to rotate downwardly,
It is fixed to one side wall 5a of the slide guide 5. Reference numeral 5c denotes a tongue protruding inward from the upper end of the other side wall 5b of the slide guide 5 to prevent the slide member 9 from separating upward.

The base end 9b of the slide member 9 is connected to a rotating shaft 1 rotatably supported by a link bracket 14.
It is connected by a connecting pin 17 to a swinging lever 16 attached to one end of the lever 5. This swing lever 16
is bifurcated, and the base end 9 of the slide member 9
b and the other side wall 5b of the slide guide 5 are sandwiched therebetween. Therefore, the other side wall 5b of the slide guide 5 is formed with an arc-shaped elongated hole 18 through which the connecting pin 17 passes.

The link bracket 14 is connected to the slide guide 5
The engagement is fixed. Further, a link 19 is attached to the other end of the rotating shaft 15, and this link 1
A connecting pin 20 protruding from the tip of the solenoid 9 is connected to an ejecting and retracting shaft 22 of a push-pull type solenoid 21.

The solenoid 21 is connected to a control circuit shown in FIG. 21a is a push coil that is energized during the lock release operation, and 21b is a pull coil that is energized during the lock operation. 31 is an ignition generator as a power source 31 that operates when the engine is started, and is connected to a relay 32 and an off timer 33.
The coils 21a and 21b are connected to current-carrying terminals via the coils 21a and 21b. The relay 32 has a normally closed terminal 32a connected to the push coil 21a, and a terminal 32b that closes when the relay coil 32c is energized.
is connected to the pull coil 21b. The power source 31 is connected to the relay coil 32c, and there are relays 34 and 35 connected in parallel between them, which are energized when the shift lever 1 is in the N position and P position, respectively, and when the foot brake is depressed. A normally closed brake switch 36, which is sometimes opened, is interposed. 37 is a group of switches that are selectively opened and closed according to the shift position selected by the shift lever 1, and 38 is a group of indicators thereof. When the shift position is N or P, the corresponding switch in the switch group 37 is turned on, and current flows from the power source to the relay coils of the relays 34 and 35 through the corresponding indicators in the indicator group 38. has been done.

In the above configuration, when the engine is started with the shift lever 1 in the N position or P position, the power supply 31 is activated and the relay 34 or 35 is closed, and if the foot brake is not depressed at that time,
Since the brake switch 36 is closed, the relay coil 32c of the relay 32 is energized, and the relay 3
2 closes its terminal 32b side, current flows through the pull coil 21b of the solenoid 21 via the off-timer 33, and the retractable shaft 22 of the solenoid 21 retracts.

As a result, as shown in FIG.
The slide member 5 moves toward its base via the rotating shaft 15 and the swing lever 16, and as a result, the inclined cam surface 11 of the slide member 9 and the inclined cam surface 10 of the lock plate 8 engage with each other. swings upward, and the lower end of the distal end of the lock plate 8 rides on the upper surface of the wide portion 9a of the slide member 9, so that the lock plate 8 is in the locked position. Thus, the upper edge of the lock plate 8 or the engaging portion 12 prevents the engaging pin 3 from moving from the P position or the N position to any other position, thereby preventing the vehicle from suddenly starting.

When a predetermined period of time, for example 2 to 5 seconds has elapsed in this state, the off timer 33 is activated and the energization to the pull coil 21b of the solenoid 21 is stopped.
The biasing force against it disappears. However, the slide member 9 is pressed and fixed by the biasing force of the leaf spring 13 acting on the lock plate 8, and the lock plate 8 is held in the locked position by the slide member 9. Furthermore, since the energization to the solenoid 21 is stopped after a predetermined period of time, there is no risk of burn-in.

Next, when the foot brake is stepped on, the brake switch 36 is opened and the energization to the relay coil 32c is stopped, so the relay 21 is connected to the normally closed terminal 32a.
is connected to the push coil 21a side of the solenoid 21, and the push coil 21a side of the solenoid 21 is energized.
2 protrudes, the slide member 9 moves toward its tip, and the lock plate 8 swings downward under the urging force of the plate spring 13 to the unlocked position, as shown in FIG. Thus, the engagement pin 3 of the shift lever 1 can be removed from the positioning step 4 at the P or N position, and the shift lever 1 can be shifted to any position. At this time as well, when a predetermined period of time has elapsed, the off-timer 33 is activated, and the current supply to the push coil 21a is stopped to prevent its seizure, and the lock plate 8 is connected to the leaf spring 1.
3, the state is maintained as it is.

In this way, when the shift lever 1 is shifted to another position, the relay 34 or 35 is opened, so the relay coil 32c is no longer energized.
Lock plate 8 without stepping on the foot brake
is held in the unlocked position, allowing energized driving operation.

Furthermore, according to the signal from the speed sensor, if the vehicle speed is above a certain level, shift lever 1 is shifted to N.
It is desirable to configure the solenoid 21 so that it does not move back or forth even if it is shifted to this position.

Further, in the above embodiment, the plate spring 13 is used as a means for biasing the lock plate 8 to the unlocked position, but other biasing means such as a torsion spring or the like or gravity may be used.

(Effect of the invention) According to the shift lever locking device of the invention,
Since the solenoid moves the slide member and swings the lock plate to the lock or unlock position, the shift lever can be automatically locked or unlocked by operating the solenoid. It is possible to prevent the shift lever from shifting in a predetermined state to prevent a sudden start.Moreover, the energization to the solenoid is turned off by the off-timer circuit after a predetermined period of time has elapsed.
There is no risk of seizing the solade, and since the sliding member is present even when the solenoid is turned off, the position of the lock plate is maintained as it is, ensuring highly reliable operation. Furthermore, since the slide member is moved in a direction perpendicular to the rocking direction of the lock plate, the slide member and each component such as the solenoid that operates it can be arranged to fit the console box, resulting in a compact arrangement. It has great effects, such as being able to

[Brief explanation of drawings]

Figures 1 to 4 show an embodiment of the present invention, with Figure 1 being a front view in a locked state, Figure 2 being a front view in an unlocked state, and Figure 3 showing each component disassembled. The perspective view shown in FIG. 4 is a control circuit diagram. 1...Shift lever, 8...Lock plate,
9... Slide member, 13... Means for urging, 2
1...Soleido, 33...Off timer.

Claims (1)

[Scope of utility model registration request] A lock plate that locks the shift of the shift lever from the neutral or parking position to any other position is provided so as to be swingable between a lock position and an unlock position, and the lock plate is located on substantially the same plane with respect to the swing direction of the lock plate. a solenoid for moving the slide member; and a solenoid for moving the slide member. What is claimed is: 1. A locking device for a shift lever, comprising: an off-timer that stops energization of a solenoid after a predetermined period of time has elapsed after an activation command is issued;