JPH01182130A - Steering device for automatic transmission gear - Google Patents

Abstract

PURPOSE:To prevent unexpected start of a vehicle by releasing a locking member which locks it in the P and N range, at the braking time. CONSTITUTION:A shift lever of an automatic transmission gear has a pin 5 which is pressed upward. The lock member 7 of a shift lock is placed below the guide pin 5. So, with the brake inoperational, the shift lever is not be able to be operated. Once the brake is applied, an actuator 8 operates so that the locking member 7 turns counterclockwise through the center of a turning shaft 7a. The locking board 7b is displaced from the position where it holds the guide pin 5, that is, moved from the locking position for the guide pin 5 to the releasing position. The guide pin 5 is then able to be lowered to enable the shift lever of being operated from the P range to the R range, whereby releasing the shift lock. As a result, the vehicle may be prevented from unexpected start.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an operating device for an automatic transmission of an automobile or the like, and more particularly to a locking mechanism for a shift lever.

(Prior technology) A shift lever selects a range such as parking (P) range, R range, N range, D range, etc., and within the D range, a predetermined speed range is automatically selected according to vehicle speed, accelerator opening, etc. An automatic transmission that selectively changes gears is installed in an automatic type vehicle.

However, in recent years, as a countermeasure against erroneous operation of the shift lever in automatic transmissions, a shift lock mechanism has been installed to lock the shift lever in the P range to prevent mistakes in switching the shift lever from the P range to the drive (D) range. For example, as shown in Japanese Utility Model Application No. 57-148222, such a shift lock mechanism is provided with a blocking member that prevents the automatic transmission from shifting from the P range to the driving range. There are some devices in which the blocking member is configured to be removed only when the foot brake is in the braking state.

Therefore, if you do not operate the foot brake, the shift lever will
It is possible to prevent the vehicle from suddenly starting when the shift lever is changed from the P range to the drive range without operating the brake because the vehicle cannot be operated from the P range to the drive range.

(Problem to be solved by the invention) However, such erroneous operation of the shift lever change when the brake is not applied occurs not only in the P range but also in the N range.
This can also occur when changing the lever from range to R or D, and may cause the vehicle to start unexpectedly.

Therefore, there is a need for a means that can reliably prevent such erroneous operations and further improve the safety of the vehicle body with a simple system.

In response to such demands, the present invention aims to provide an operating device for an automatic transmission that can prevent erroneous operation of a shift lever.

(Means for Solving the Problems) The operating device for an automatic transmission of the present invention moves a guide pin provided on a shift lever to both a P range position and an N range position so as to restrict movement of the shift lever of an automatic transmission. A blocking member that swings between a locked position and a released position is provided, and lock release means is provided that swings the blocking member from the locked position to the released position in response to brake operation. That is.

(Function) Since the automatic transmission operating device of the present invention has the above-described structure, the guide pin blocking member will be released from the guide pin lock position in the N range position as well as in the P range position if the brake is not activated. Since the guide bin does not swing to the position, the movement of the guide bin in the P or N range is blocked when the brake is not activated, and the shift lever does not move to the P or N range.
Locked in microwave. That is, a shift lock mechanism that uses brake operation as a release condition is also provided in the N range.

(Example) An example of the present invention will be described below with reference to the drawings. As shown in Fig. 1, the automatic transmission 1 is similar to a general transmission, and the lower end of the shift lever 3 has a rotation shaft 2 arranged in the left-right direction of the vehicle body.
Parking (P), Reverse (R), Neutral (N), Drive (D), 2nd gear drive (D)
Z), first speed drive (D), and each shift zone 4 can be selected.

The shift lever 3 is provided with a guide pin 5 that is biased upward, and when the shift lever 3 is operated, a detent pin type guide pin 5 moves into the step-shaped shift zone 4. It is resiliently engaged in a predetermined position.

As shown in FIG. 2, this shift zone 4 is located on a guide plate 6 installed on the floor.

D, D2. Each zone D is formed with stepped openings, and the guide pin 5 will move downward against the spring bias unless a push button (not shown) provided on the operating section at the upper end of the shift lever 3 is pressed. Since the guide pin 5 is configured so that it cannot be moved to another range, switching from the P range to the R range, for example, is performed by moving the guide pin 5 downward by operating a push button. However, when the brake is not activated, the guide pin 5 in the P range or N range is placed below the guide pin so that it will not be lowered even if this push button is operated (see Fig. 3). is installed. As shown in FIG. 3, this blocking member 7 is approximately U
It has a U-shape and is attached to the vehicle floor by an elastic member so that it rotates in the direction of the arrow with a hole provided at the bottom of the U-shape as a pivot shaft 7a, and one end is connected to an actuator (solenoid) 8. It is linked. The two upper ends of the U-shape 7
c.

7d are disposed to face the protruding portions of the guide pins 5 engaged with the P range and the N range, respectively;
A bent guide pin blocking plate 7b is formed at the side end 7c and the N side end 7d. That is, for example, when the guide bin 5 is in the P range as shown in FIG. It is. Also, when the guide pin 5 is in the N range, the blocking plate 7b at the N side end 7d is positioned below the guide pin 5 to prevent the guide pin 5 from descending.

Therefore, as described above, even if the push button of the shift lever 3 is pressed, operation to other ranges that involves lowering the guide pin 5 is impossible. For this reason, shift lever operations that involve downward guide pin movement from P and N ranges (from P to R, D, etc., from N to R) are impossible.
is locked. When the brake is depressed in such a shift locked state, the actuator 8 is activated and the blocking member 7 is rotated in the direction of arrow A about the rotation shaft 7a. Therefore, the blocking plate 7b shifts from the supporting position of the guide pin 5 and moves from the lock position to the release position of the guide pin 5, and the guide pin 5 becomes in a state where it can be lowered, and the shift lever 3
By operating the push button, the shift lock can be released from the P range or the N range to the R range.

In the above embodiment, when the brake is not activated, the guide pin 5, which is in the P or N range, is prevented from moving to the R range, and the shift lever 3 is moved from the P or N range to the R range.
Although a structure has been shown in which the shift lever is locked in the range so that it cannot be operated, there is also a risk that the vehicle will start unexpectedly if the shift lever in the N range is shifted to the D range without operating the brake.

For this reason, it is preferable to provide a locking mechanism that prevents the guide pin in the N range from moving toward the D range when the brake is not activated, as in the second embodiment shown below. For example, as shown in FIGS. 4 and 5, a swinging portion 10 is formed at a portion of a U-shaped N-side end 78 that is substantially similar to the blocking member 7 described above. As shown in the side explanatory view of FIG.
a and a lateral blocking plate fob that prevents movement toward the D range side are integrally arranged in an L-shape, and the blocking plate 10a has a bent portion 1.
0c is formed, and is attached to the N-side end 7e with a force of rotation in the direction of arrow B about the rotation axis 10d by being biased by a spring, and is further configured to perform this rotation appropriately. A stopper pin 12 fixed to the guide panel 6 and a stopper pin 13, 14 formed on the blocking member 7 and moving together with the blocking member 7 are provided. When the guide pin 5 in the N range is locked in the N range, it is made to protrude from the guide plate 6 toward the blocking member 7 so as to come into contact with the lateral blocking plate 10b of the swinging part 10 located opposite the N range. A lateral blocking plate 10b of the swinging portion 10 is locked by a stopper pin 12, and rotation about the rotation axis 10d is prevented. Therefore, the guide pin 5 cannot move toward the D range due to the lateral blocking plate 10b, and the blocking plate 10b prevents the guide pin 5 from moving toward the D range.
Since the shift lever cannot be lowered due to a, the shift lever is reliably locked in the N range. As shown in FIG. 6A, in the N range locked state where the swinging section 10 is stopped and stopped by the stopper pin 12, the brake is activated and the blocking member 7 is pulled by the actuator 8 as indicated by the arrow in FIG. 6A. When it rotates in the A direction, the swinging part lO as shown in Fig. 6B.
The horizontal blocking plate 10b is disengaged from the stopper pin 12, and the swinging portion 1O is rotated about the rotation shaft 10d. Therefore, the guide pin 5 can be moved from the N range to the D range. That is, the lock to the D range is released by applying the brake. This swinging portion IO further rotates in the direction of arrow B, and the member that prevents the guide pin 5 from descending is removed, allowing the guide pin 5 to descend and the lock to the R range to be released. When the swinging part 10 further rotates, the stopper pin 13 is projected from the blocking member 7 toward the swinging part 10, as shown in FIG. 6C.
The horizontal blocking plate 10b comes into contact with the lateral blocking plate 10b to prevent rotation and stop.

That is, after the shift lock is released, the swinging portion 10 is stopped by the stopper pin 13, and the guide pin can be positioned below the N range.

When the shift lever is operated from the D range to the N range, the guide pin 5 in the D range as shown in Fig. 6D pushes up the bent portion 10c as shown in Fig. 6E due to the lever operation, preventing the shift lever from moving from the D range to the N range. The bending portion 10c rotates and stops until the base portion of the bent portion 10c is locked with the stopper pin 14 projected from the member 7 toward the swinging portion IO side. Furthermore, the swinging part I
While O is in this state, the blocking member 7 is
returns to the position corresponding to the P range and N range at the upper end of the U-shape, and the swinging part 10 is disposed at the N range lock position shown in FIG. 6A, and the guide pin 5 cannot move to the N range and N range sides. locked.

(Effects of the Invention) The operating device for an automatic transmission of the present invention includes a blocking member that swings between a lock position that locks the guide pin in both the P range position and the N range position, and a release position that releases the guide pin. Since lock release means is provided for swinging the blocking member from the lock position to the release position in response to brake operation, the shift can be locked even when the shift lever is in the N range. Therefore, it is possible to reliably prevent the vehicle from starting unexpectedly due to erroneous operation of the shift lever, thereby effectively improving the safety of automatic vehicles.

Furthermore, the shift lock mechanism can be provided in two ranges, the P range and the N range, using a single blocking member and a drive system for this blocking member, which is also effective without complicating the vehicle body.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of an embodiment of the automatic transmission operating device of the present invention, FIG. 2 is an explanatory diagram showing a shift zone in the embodiment, and FIG. 3 is an embodiment of the blocking member in the embodiment. FIG. 4 is a partial perspective view of a blocking member of another embodiment of the automatic transmission operating device of the present invention, FIG. 5 is a side explanatory view of a part of the blocking member, and FIGS.
FIG. 6E is a diagram illustrating the function of the blocking member in the second embodiment. 1... Automatic transmission operating device 3... Shift lever 5... Guide pin 7... Blocking member Fig. 1 Fig. 4/e? [Figure 25 Figure 6A Figure 6B Figure 6C Figure 6D Figure 6E

Claims (1)

[Claims] Move the guide pin provided on the shift lever to the P range position and N position to restrict the movement of the shift lever of the automatic transmission.
A blocking member is provided that swings between a locked position and a released position in the range position, and lock release means is provided for swinging the blocking member from the locked position to the released position in response to brake operation. An automatic transmission operating device characterized by: