JPH0519228Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial field of application) The present invention is to prevent the shift lever from being oscillated under predetermined conditions when the shift lever is located at a specific non-driving position. This invention relates to a locking device for a shift lever for an automatic transmission.

(Prior Art) In a car with an automatic transmission, for example, when starting with the shift lever in the "P" position, turn on the ignition switch, press the foot brake, and then move the shift lever. The vehicle is shifted from the "P" position to a driving position such as the "R" or "D" position, and then the vehicle is started.

(Problems to be Solved by the Invention) However, in the above-mentioned device, the shift lever can be shifted from the "P" position to the drive position without stepping on the foot brake.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a shift lever locking device for an automatic transmission capable of locking the shift lever from a particular non-driving position to a driving position unless predetermined conditions are met. be.

[Structure of the invention] (Means for solving the problem) The locking device for a shift lever for an automatic transmission of the invention has a detent pin that is moved in one direction by pressing a push button provided on the shift lever. A detent plate that regulates the swinging operation of the shift lever through cooperative action and has a lock recess with which the detent pin moves in the other direction and is engaged when the shift lever is shifted to a specific non-driving position. is provided, and is moved between a lock position where the detent pin is engaged with the detent pin engaged in the lock recess to restrict movement of the detent pin, and a lock release position where the engagement with the detent pin is released. The locking member is provided with a locking member that operates depending on the presence or absence of an electric signal, and the actuator changes its state between a state in which the locking member is restrained in the locked position and a state in which the restraint is released. The electrically actuating member activates the locking member only when the ignition switch is turned on and the brake is applied with the shift lever positioned at a specific non-driving position. The locking member is characterized in that the locking member is released from being restrained at the locked position, and the locking member is restrained at the locked position at other times.

(Function) When the shift lever is located at a specific non-driving position and the actuator of the electrically actuated member restrains the locking member in the locked position, pressing the shift lever push button will not lock the locking member. The movement of the detent pin engaged with the recess is restricted, whereby the shift lever is locked in a specific non-driving position so that it cannot be swung. On the other hand, when the actuator of the electrically actuated member releases the locking member from this locked state, the detent pin becomes movable by pressing the shift lever push button in this state, and the shift lever The shift lever can be shifted from a specific non-driving position to another position.

(Example) The following Figures 1 to 4 are for the first embodiment of the present invention.
This will be explained with reference to the figures.

First, in FIGS. 1 and 2, reference numeral 1 denotes a shift lever, which is provided on a pulley 2 so as to be swingable in the direction of arrow A and in the opposite direction of arrow A, using a shaft 3 as a fulcrum. 4 is a detent plate fixed to plate 2, as shown in FIG.
Along the swinging direction of the shift lever 1, the shift lever 1 is placed in the "P" position, the "R" position,
An engagement hole 5 is formed having an engagement surface for selectively positioning it in the "N" position, "D" position, "2" position, and "L" position. A lock recess 6 is formed in the engagement hole 5 at a portion corresponding to the "P" position as a specific non-drive position. A detent pin 7 is provided at the lower part of the shift lever 1 so as to engage with the engagement hole 5 of the detent plate 4. This detent pin is movable in the axial direction of the shift lever 1. By pressing the push button 8 provided on the knob 1a, it is moved downward in one direction to disengage the engagement surface of each position in the engagement hole 5, and by releasing the push button 8, it is moved downward in one direction. By moving above the barrel and engaging with the engagement surface at one position in the engagement hole 5, the shift lever 1 cooperates with the detent plate 4 to restrict the swinging operation of the shift lever 1.

9 is a guide member fixed to the detent plate 4; 10 is a lock member provided on this guide member 9 so as to be able to slide in the direction of arrow B and in the direction opposite to arrow B; An engagement groove 11 is provided which opens toward the left and faces the lock recess 6 in FIG. 1, and a notch 12 is provided at the lower right portion. A lock lever 13 is rotatably provided on the plate 2 with a pin 14.

A solenoid 15 is an electrically actuated member provided at the bottom of the plate 2, and has an actuator 16 protruding rightward.A holder 17 provided at the tip of the actuator 16 connects the bottom of the lock lever 13 and the pin. 18. Further, a compression coil spring 19 is disposed between the holder 17 and the solenoid 15. Therefore, this solenoid 15 is turned on only when the shift lever 1 is placed in the "P" position, the ignition switch is turned on, and the foot brake is depressed, that is, when the brake is applied. In this ON state, the actuator 16 is attracted in the direction of arrow C against the spring force of the compression coil spring 19, and rotates the lock lever 13 in the direction of arrow D. Otherwise, the actuator 16 is in the OFF state and is attracted in the direction of arrow C. is pulled in the direction opposite to the arrow C by the spring force of the compression coil spring 19, thereby rotating the lock lever 13 in the direction opposite to the arrow D. Here, in FIG. 3 showing the electric circuit related to the solenoid 15, 20 is an ignition switch, 21 is a "P" position detection switch, and 22 is a foot brake switch, which indicates when the foot brake is depressed. It is turned on at times.
In FIG. 3, 23 to 26 are transistors, 27 and 28 are capacitors, 29 to 31 are diodes, 32 to 41 are resistors, and 42 is a Zener diode.

Next, the operation of the above configuration will be explained. First, the solenoid 15 is connected to the ignition switch 20, "P"
When either the position detection switch 21 or the foot brake switch 22 is off, it is in an inactive state (off), and in this state, the actuator 1
6 is biased in the opposite direction of arrow C by the spring force of the compression coil spring 19. Next, the ignition switch 20 is turned on, the "P" position detection switch 21 is turned on when the shift lever 1 is shifted to the "P" position, and the foot brake switch 22 is turned on when the foot brake is depressed. When a predetermined condition is satisfied, first the transistor 23 is turned on, and accordingly the transistor 24 is turned on, and the transistors 25 and 26 are turned on.
The solenoid 15 is set to 1 at startup as shown in Fig. 4.
A voltage of 2V is applied to actuate (turn on), and the actuator 16 is attracted in the direction of arrow C against the compression coil spring 19. And transistor 2
When charging of the capacitor 27 connected to the base of the solenoid 5 is completed, the transistor 25 is turned off (time t in FIG. 4), and from then on, the solenoid 1
5 will be energized, and the voltage applied to the solenoid 15 will drop to about 8V. Then, the ignition switch 20, the "P" position detection switch 21, and the foot brake switch 22.
When at least one of them is turned off and the predetermined condition is no longer satisfied, capacitor 2
7 is discharged, a potential difference is generated between both ends of the resistor 36, so a base current flows through the transistor 26, and the transistor 26 is gradually turned off, and the solenoid 15 is gradually turned off. , the impact on the actuator 16 when the solenoid 15 is turned off is softened.

Now, when the ignition switch 20 is turned on, the shift lever 1 is in the "P" position, and the foot brake is not depressed, the detent pin 7 is the lock recess 6 of the detent plate 4.
At the same time, the engagement groove 11 of the locking member 10 is engaged with the detent pin 7, and the locking member 10 is located at the locked position. Also, since the solenoid 15 is in the OFF state, the solenoid 15
The actuator 16 is biased in the direction opposite to the arrow C by the spring force of the compression coil spring 19, so that the lock lever 13 moves in the direction opposite to the arrow D as shown by the solid line.
The upper end of the lock lever 13 is now engaged with the notch 12 of the lock member 10. In this state, the movement of the lock member 10 engaged with the detent pin 7 in the direction of arrow B is restrained by the lock lever 13, and even if the push button 8 of the shift lever 1 is pressed, the detent pin 7
Since the downward movement of the shift lever 1 is restricted, it is not possible to shift the shift lever 1 from the "P" position to any other position, and therefore the shift lever 1 is locked in the "P" position so that it cannot be swung. has been done.

Then, when the foot brake is depressed from this state, the solenoid 15 is turned on and the actuator 16 is attracted in the direction of arrow C, and the lock lever 13 is accordingly moved as shown by the two-dot chain line.
When the lock lever 13 is rotated in the direction shown in FIG.
restrictions will be lifted. When the push button 8 is pressed in this state, the detent pin 7 is moved downward (in the direction of arrow B) together with the lock member 10, and the lock member 10 is positioned at the unlocked position as shown in FIG. In this state, the detent pin 7 is disengaged from the lock recess 6, so by operating the shift lever 1 in the direction of arrow A while pressing the push button 8, the shift lever 1 can be moved to "P". ” can be shifted from one position to another.

When the shift lever 1 is shifted to a position other than "P", for example, the "N" position as shown in FIG. 2, the "P" position detection switch 2 is activated.
1 is turned off, the solenoid 15 is turned off, and the tip of the lock lever 13 comes into contact with the right side edge of the lock member 10 due to the biasing force of the compression coil spring 19 (see FIG. 2). When shift lever 1 is in any position other than the "P" position, depress the foot brake and switch foot brake switch 2.
Even if solenoid 2 is turned on, solenoid 15 will not be turned on. When the shift lever 1 is shifted from a position other than "P" to the "P" position while pressing the push button 8, the detent pin 7
engages with the engagement groove 11 of the lock member 10, and when the push button 8 is released in this state, the lock member 10 moves together with the detent pin 7 in the opposite direction of arrow B (upwards).
The detent pin 7 engages with the lock recess 6 and the lock member 10 is positioned at the lock position. Then, the lock lever 13, which was in contact with the right side edge of the lock member 10, releases the compression coil spring 19.
The shift lever 1 is rotated in the opposite direction of arrow D by the biasing force of the lock member 10 and engaged with the notch 12 of the lock member 10, so that the shift lever 1 is locked in the "P" position as shown in FIG. The state will be as follows.

In this way, according to this embodiment, the shift lever 1
is in the "P" position, even if the ignition switch 20 is turned on, the solenoid 15 will not be turned on unless the foot brake is depressed, and the shift lever 1 will be shifted from the "P" position to another position. Therefore, when starting a car with shift lever 1 in the "P" position, the driver forgets to press the foot brake and shifts shift lever 1 to the drive position. This is definitely prevented. In addition, in the case of this embodiment, the solenoid 15 is activated only when so-called predetermined conditions are met: the shift lever 1 is located at the "P" position, the ignition switch 20 is turned on, and the foot brake is depressed. If the shift lever 1 is in a position other than "P", the lock lever 1 will be in an off state even if the foot brake is depressed, for example, even if the shift lever 1 is in a position other than "P".
The durability of the mechanism for locking and unlocking the shift lever 1 can be improved compared to a mechanism in which the shift lever 13 is mechanically connected to a foot brake and the lock bar 13 is rotated each time the foot brake is depressed.

Further, according to this embodiment, a lock member 10 and a lock lever 13 are interposed between the detent pin 7 and the actuator 16 of the solenoid 15, so that when the shift lever 1 is locked in the "P" position, the push button is not pressed. Even when the detent pin 7 is pressed down by the pressing operation of the push button 8, the pressing force of the push button 8 is transferred from the detent pin 7 to the actuator 16.
Because it does not act directly on the actuator, it is different from the structure in which the actuator directly receives the detent pin when it is pushed down.
The actuator 16 will not be damaged or deformed, and the smooth operation of the solenoid 15 will not be hindered.

In addition, according to this embodiment, when the shift lever 1 is in the "P" position and the ignition switch 20 is turned off, such as when the vehicle is parked, the locking member 10 is closed to the solenoid 15.
Since it is in the locked state where it is restrained to the lock position by the actuator 16 of
Even if the shift lever 1 is pressed, it is not possible to shift the shift lever 1 from the "P" position to any other position. Therefore, if the shift lever 1 is moved to the "P" position by mischief,
It is possible to prevent the position from being shifted to another position.

5 and 6 show a second embodiment of the present invention, which differs from the first embodiment in the following points.
That is, the lock lever 13 in the first embodiment is not provided between the lock member 10 and the solenoid 15,
Further, the solenoid 15 is arranged on the right side of the locking member 10. In this case, when the shift lever 1 is in the "P" position and the solenoid 15 is off, the actuator 16 is biased in the opposite direction of arrow E by the spring force of the compression coil spring 19, as shown by the solid line in FIG. When the solenoid 15 is turned on, the actuator 16 is attracted in the direction of the arrow E as shown by the two-dot chain line. The shift lever 1 is then moved away from the lock member 10 to release its restraint.
When the solenoid 15 is in a position other than "P", the solenoid 15 is turned off and the actuator 16 is brought into contact with the right side edge of the locking member 10, as shown in FIG.

Further, FIGS. 7 and 8 show a third embodiment of the present invention, and in this third embodiment, the lock member 4 is
3 is provided rotatably about a fulcrum 44, which is different from the first and second embodiments. In the case of this third embodiment, when the shift lever 1 is in the "P" position and the solenoid 15 is in the OFF state, the actuator 16 is moved in the opposite direction of arrow C by the spring force of the compression coil spring 19, as shown by the solid line in FIG. The locking member 43 is restrained in the locked position by engaging the notch 45 of the locking member 43 and restricting the rotation of the locking member 43 in the direction of arrow F, and the solenoid 15 is turned on. At this time, the actuator 16 is attracted in the direction of the arrow C as shown by the two-dot chain line, disengages from the notch 45 of the lock member 43, and allows the lock member 43 to rotate in the direction of the arrow F, and the shift lever When 1 is placed in a position other than "P",
As shown in FIG. 8, the solenoid 15 is turned off and the actuator 16 comes into contact with the side edge of the locking member 43.

Furthermore, FIG. 9 shows a fourth embodiment of the present invention, in which the solenoid 15 is arranged so that the direction of its actuator 16 is perpendicular to the detent plate. Different from the example. In the case of this fourth embodiment, when the solenoid 15 is in the OFF state, the actuator 16
As shown by the solid line, the lock member 10 is biased in the opposite direction of arrow C by the spring force of the compression coil spring 19 and comes into contact with the lower end of the lock member 10 to restrict the downward movement of the lock member 10. When the solenoid 15 is restrained in the locked position and the solenoid 15 is turned on, the actuator 16 is attracted in the direction of arrow C as shown by the two-dot chain line and is separated from the locking member 10, thereby releasing the restraint.

In each of the above embodiments, when the solenoid 15 is in the OFF state, the locking member is restrained in the lock position to lock the shift lever 1, and when the solenoid 15 is in the ON state, the restraint is released and the shift lever 1 is locked. However, on the contrary, the shift lever 1 may be locked when the solenoid 15 is on, and the shift lever 1 may be unlocked when the solenoid 15 is off.

Further, the solenoid may be of a type in which the actuator is held at the moving position even after the actuator is turned off when the actuator is moved.

Further, in each of the above embodiments, the solenoid 15 is used as an example of the electrically actuating member, but the solenoid 15 is not limited thereto, and a motor may be used as the driving source, for example. Further, in each of the above embodiments, the shift lever 1 is locked at the "P" position, but it may be locked at the "N" position, which is another non-driving position.

[Effects of the invention] As is clear from the above description, the present invention allows the swinging operation of the shift lever through cooperation with the detent pin, which is moved in one direction by pressing the push button provided on the shift lever. A detent plate is provided which has a lock recess that restricts the detent pin and engages the detent pin when it moves in the other direction when the shift lever is shifted to a specific non-driving position, and the detent plate is engaged with the lock recess. A lock member is provided which is moved between a lock position where it engages with the detent pin and restricts movement of the detent pin and a lock release position where the engagement with the detent pin is released, and furthermore, the lock member is moved between the lock position where the detent pin is engaged and the movement of the detent pin is restricted, and the lock release position where the engagement with the detent pin is released. an electrically actuating member that operates depending on the presence or absence of the locking member, and whose state changes between a state in which the actuator restrains the locking member in the locked position and a state in which the actuator releases the restraint; The locking member is released from the locking position only when the ignition switch is turned on and the brake is applied while the shift lever is in a specific non-driving position. The locking member is characterized in that the locking member is restrained in the locked position at other times. According to such a configuration, when the shift lever is located at a specific non-driving position, the shift will not be performed unless a predetermined condition is satisfied, that is, unless the ignition switch is turned on and the brake is not applied. The shift lever can be locked from being shifted from the non-drive position to the drive position, and a locking member is interposed between the detent pin and the actuator of the electrically actuated member so that the shift lever cannot be shifted from the non-drive position to the drive position. Even if the push button is pressed while locked in the driving position, the pressing force of the push button does not directly act on the actuator from the detent pin, thereby preventing damage or deformation of the actuator and preventing the activation of the electrically actuated member. Defects can be prevented. In addition, when the shift lever is in a specific non-driving position and the ignition switch is turned off, the locking member is held in the locked position by the actuator of the electrically actuated member. Therefore, even if the push button is pressed in this state, the shift lever cannot be shifted from a specific non-driving position to another position. It is possible to prevent the camera from being shifted to the new position.

[Brief explanation of the drawing]

1 to 4 show a first embodiment of the present invention, and FIG. 1 is a partially cutaway schematic side view;
2 is a diagram corresponding to FIG. 1 showing an operating state different from that in FIG. 1, FIG. 3 is an electric circuit diagram, and FIG. 4 is a diagram showing changes in voltage applied to the solenoid. 5 and 6 show a second embodiment of the present invention, FIG. 5 is a diagram equivalent to FIG. 1, FIG. 6 is a diagram equivalent to FIG. 2, and FIGS. 7 and 8 are diagrams corresponding to FIG. 7 is a view corresponding to FIG. 1, FIG. 8 is a view equivalent to FIG. 2, and FIG. 9 is a broken view of the main part showing the fourth embodiment of the present invention. It is a front view. In the drawing, 1 is a shift lever, 4 is a detent plate, 6 is a lock recess, 7 is a detent pin,
8 is a push button, 10 is a lock member, 15 is a solenoid (electrical operating member), 16 is an actuator, 20
21 is an ignition switch, 21 is a "P" position detection switch, 22 is a foot brake switch, and 43 is a locking member.

Claims (1)

[Claims for Utility Model Registration] A shift lever that selects one of a plurality of positions including a specific non-driving position by a swinging operation, and a shift lever that is moved in one direction by pressing a push button provided on the shift lever. The detent pin cooperates with the detent pin to restrict the swinging operation of the shift lever, and when the shift lever is shifted to a specific non-driving position, the detent pin moves in the other direction and becomes engaged. a detent plate having a lock recess that is engaged with the detent pin; and a lock position that engages with the detent pin engaged in the lock recess to restrict movement of the detent pin, and the engagement between the detent pin and the detent pin can be released. A locking member is moved between a locking position and an unlocking position, and an actuator is provided to operate depending on the presence or absence of an electric signal, and its operation causes an actuator to lock the locking member in the locked position and release the locking position. and an electrically actuating member whose state is changed when the ignition switch is turned on and the brake is applied when the shift lever is positioned at a specific non-driving position. A locking device for a shift lever for an automatic transmission, characterized in that the locking member is released from the locking position only when the locking member is operated, and the locking member is restrained at the locking position at other times.