JP3204622B2 - Shift lever device for automatic transmission - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shift lever device for an automatic transmission of an automobile, and more particularly to a lock mechanism for a shift lever device for a gate type automatic transmission.

[0002]

2. Description of the Related Art A shift lever device for an automatic transmission includes a straight-type shift lever device in which the shift lever can be shifted only in the vehicle longitudinal direction, and a gate-type shift device in which the shift lever can shift in the vehicle longitudinal direction and the vehicle width direction. There is a lever device. FIGS. 9 to 11 show a shift lever device for a gate type automatic transmission disclosed in Japanese Patent Application No. 8-3905 previously disclosed by the present applicant, which has not been disclosed yet. The shift lever 2 is attached to a base body (not shown), and can shift to P, R, N, D, 4, 3, 2, and L ranges, respectively. In a shift lever device for a gate type automatic transmission, a lock mechanism (P lock, R inhibit) is provided to prevent an erroneous operation of the shift lever. The P lock is for preventing an erroneous operation when the vehicle starts moving. When the shift lever 2 is shifted to the P range (parking position), the shift operation to another range is performed unless the brake pedal is depressed. Can not. The R inhibit is for preventing a shift operation of the shift lever 2 from the D range (drive range) to the R range (reverse range) during running of the vehicle.

The shift lever 2 swings in the vehicle longitudinal direction and the vehicle width direction along a gate pattern 3 shown in FIG. The lock member 4 is supported by the base body so as to be able to swing vertically. A solenoid 6 is connected to the lock member 4. The lock member 4 is urged upward by a spring 7 provided on the solenoid 6 side. The shift lever 2 is formed with one projection 8 projecting in the vehicle width direction. The projection 8 of the shift lever 2
When the shift lever 2 is shifted to the N range, the shift lever 2 can face the distal end portion 4a of the lock member 4, and when the shift lever 2 is shifted to the P range, it can face the center portion 4b of the lock member 4. It is possible. The lock member 4 has a substantially V-shaped cutout 4c between the tip 4a and the center 4b. Projection 8 of shift lever 2
When the shift lever 2 is shifted to the R range, it faces the cutout 4c.

When shifting the shift lever 2 to another range, a brake pedal (not shown) is depressed to operate the solenoid 6 and swing the lock member 4 downward. In this state, even when the shift lever 2 is swung from the P range in the vehicle width direction, the protrusion 8 is prevented from abutting on the lock member 4, and the shift lever 2 can be shifted to another range. When the brake pedal is not depressed, the lock member 4 is not swung downward by the solenoid 6. Therefore, when the shift lever 2 is swung in the vehicle width direction, the projection 8 is moved to the center of the lock member 4. 4b
And the shift operation to another range becomes impossible.
On the back surface of the central portion 4b of the lock member 4, there is formed a rib 4e which comes into contact with the base body and receives the pressing force of the projection 8. Similarly, when shifting the shift lever 2 shifted to the N range to the R range, the brake pedal is depressed, the solenoid 6 is operated, and the lock member 4 is moved.
Is swung down. In this state, even if the shift lever 2 is swung from the N range in the vehicle width direction, the contact of the projection 8 with the lock member 4 is avoided, and the shift lever 2 can be shifted to the R range. When the brake pedal is not depressed, the lock member 4 is not swung downward by the solenoid 6, so that when the shift lever 2 is to be swung in the vehicle width direction, the projection 8
And the shift lever 2 is prevented from shifting from the N range to the R range. From D range to R
Since the shift operation to the range cannot be performed without passing through the N range, the shift operation from the D range to the R range during traveling is prevented by preventing the shift operation from the N range to the R range. On the back surface of the distal end portion 4a of the lock member 4, a rib 4d that contacts the base body and receives the pressing force of the projection 8 is formed.

[0005]

However, the devices shown in FIGS. 9 to 11 have the following problems. The tip 4a and the center 4b of the lock member 4
Since the distance from the swing center is different, the vertical swing amounts of the distal end portion 4a and the central portion 4b are different. Since the swing amount of the central portion 4b is smaller than that of the distal end portion 4a, even if the contact surface between the distal end portion 4a and the projection 8 is set large, the contact area between the central portion 4b and the projection 8 becomes small. . Therefore, when the shift lever 2 swings in the vehicle width direction, the surface pressure of the central portion 4b becomes large, which is disadvantageous in securing the lock strength. In order to increase the contact area of the central portion 4b, it is necessary to increase the swing amount of the lock member 4, but in this case, a large solenoid 6 having a large stroke must be used. In order to increase the stroke, it is conceivable to move the mounting position of the solenoid to the lock member 4 closer to the swing center (of the lock member). In this case, when the projection 8 is pressed against the central portion 4b. When the solenoid is operated to rotate the lock member 4, the driving force of the solenoid becomes insufficient. Therefore, a large-sized (large driving force) solenoid must be used. The problem of cost increase arises. The lock member 4 has a V-shaped cutout 4c formed between the distal end portion 4a and the central portion 4b to prevent interference with the projection 8, so that the protrusion 8 is connected to the distal end portion 4a and the central portion 4b. The contact area becomes small, which is disadvantageous in securing the lock strength. Since the lock member 4 is provided with the two ribs 4d and 4e, the sliding resistance between the ribs 4d and 4e and the base body when the lock member 4 swings increases. Therefore, a large-sized solenoid 6 having a large suction force is required, and the same problems as described above in terms of storage space and cost arise. SUMMARY OF THE INVENTION It is an object of the present invention to provide an automatic transmission capable of ensuring a sufficient contact area between a projection and a lock member without using a large solenoid regardless of whether the shift lever is shifted to a P range or an N range. Machine shift lever device.

[0006]

A shift lever device for an automatic transmission according to the present invention which achieves the above object is as follows. A shift lever supported to be swingable in the vehicle front-rear direction and the vehicle width direction with respect to the base body; provided on the base body side;
A crank-shaped gate pattern having a path in which N ranges are sequentially arranged in the vehicle front-rear direction, and the shift lever can be shifted to each of the ranges only when the shift lever is swung in the vehicle width direction; A first projection provided on the shift lever and projecting in the vehicle width direction; and a second projection provided on the shift lever at a predetermined distance from the first projection in the vehicle front-rear direction and projecting in the vehicle width direction. When, is swingably supported in the vertical direction in the base body at one end, has a restricting portion at the other end, the regulating unit is, in the state in which the shift lever is shifted to the P range before Symbol a first protrusion can face, the shift lever is capable facing the front Stories second protrusion in a state of being shifted to the N range, in the state in which the shift lever is shifted to the R range first Positioned between the raised and the second protrusion, and the lock member, a biasing means for biasing the locking member, the regulating portion of the locking member aligned with the respective projections can face height, the A solenoid connected to the lock member and moving the lock member in the direction opposite to the biasing direction by the biasing means by energization by depressing a brake pedal, and a shift lever formed on the lock member and shifted to the R range. A shift lever device for an automatic transmission, comprising: a sliding surface that slides in contact with each of the protrusions and moves a lock member in a direction opposite to a biasing direction by a biasing unit when a shift operation is performed in a front-rear direction.

[0007] In the shift lever device for an automatic transmission according to the present invention, regulation of the lock member is a common portion where the first protrusion and the second protrusion abuts, setting the end of the locking member
Be killed. Therefore, do not use large solenoids.
Contact between the first and second protrusions and the lock member
A sufficient area can be secured. Further, the restricting portion of the lock member is a common portion where the first protrusion and the second protrusion abut, so that the force when swinging the shift lever in the vehicle width direction in the P range or the N range is the same. Therefore, it is sufficient that one portion of the lock member is received by the base body. Therefore, the sliding resistance between the lock member and the base body when the solenoid is energized is smaller than in the prior art, and a large solenoid is not required.

[0008]

1 to 8 show a shift lever device for an automatic transmission according to an embodiment of the present invention. As shown in FIG. 1, a shift lever 22 is supported on the base body 20. The shift lever 22 is swingable in the vehicle longitudinal direction and the vehicle width direction. A cover (not shown) is attached to an upper portion of the base body 20. A crank-shaped gate pattern 26 through which the shift lever 22 is inserted is formed on the cover. The gate pattern 26 has a P range, R range, N range, D range, 4 range, 3 range, 2 range, and L range. The moving path of the shift lever 22 is
It is determined by the gate pattern 26. Among the ranges, the P range, the R range, the N range, the 4 range, the 3 range, and the 2 range are sequentially arranged in the vehicle front-rear direction.
The D range is arranged adjacent to the four ranges in the vehicle width direction. The L range is disposed adjacent to the two ranges in the vehicle width direction. The shift lever 22 is urged by a spring (not shown) toward the inner surface 26a where the P range, R range, N range, 4 range, 3 range, and 2 range of the gate pattern 26 are located. However, when the shift lever 22 is shifted to the D range and the L range, the moderating mechanism 23 holds the shift lever 22 in that range. When the shift lever 22 is at least shifted to the P range, the R range, and the N range,
Is swung in the vehicle width direction (direction of arrow F _1), and by swinging in the longitudinal direction of the vehicle (arrow F ₂ direction), it is possible to shift operation to each range.

On one side of the lower part of the shift lever 22, there are provided a first protrusion 28 and a second protrusion 30 having a columnar shape. The projections 28 and 30 project toward the inner surface 26b of the gate pattern 26 in the vehicle width direction. Each protrusion 2
The tip surfaces of 8, 30 are formed flat. The first projection 28 and the second projection 30 are arranged at a predetermined interval in the vehicle front-rear direction. The second projection 30 is located closer to the front of the vehicle than the first projection 28 is.

A lock member 32 having a substantially L-shaped plane is attached to the base body 20. Lock member 32
As shown in FIG. 4, a shaft 34 extending in the vehicle width direction is fixed to one end of the shaft. The shaft 34 is inserted into a bearing hole of the base body 20. Lock member 32
Can swing up and down around the shaft 34. A lock release lever 36 pressed by a push button (not shown) is attached to an end of the shaft 34. The lock release lever 36 is used only when a solenoid 40 described later does not operate due to a voltage drop or the like. Below the lock member 32, a solenoid 40 is arranged. The solenoid 40 is attached to the base body 20. The lower center part of the lock member 32 is connected to the plunger 40 a of the solenoid 40. An urging means 42 is provided on the outer periphery of the plunger 40a. The urging means 42 is constituted by a compression coil spring. The lock member 32 is urged upward by the urging force of the urging means 42.

The other end of the lock member 32 has
A restricting portion 37 that can be in contact with 8, 30 is formed. When the shift lever 22 is shifted to the P range and the solenoid 40 is not energized, the regulating portion 37
It is designed to face. When the shift lever 22 is shifted to the N range and the solenoid 40 is in a non-energized state, the restricting portion 37 faces the second protrusion 30. When the shift lever 22 is shifted to the R range and the solenoid 40 is not energized,
Is located between the projection 28 and the second projection 30. The urging means 42 has a function of urging the lock member 32 upward to position the regulating portion 37 at a height at which the restricting portion 37 can face the projections 28 and 30. The solenoid 40 is energized by depressing a brake pedal (not shown),
It has the function of moving the lock member 32 in the direction opposite to the direction of urging by the urging means 42.

A sliding surface 46, 48 is formed on the regulating portion 37 of the lock member 32. The sliding surface 46 can contact the first protrusion 28. The sliding surface 48 can come into contact with the second protrusion 30. When the shift lever 22 shifted to the R range is shifted to the front side of the vehicle, the sliding surface 46 comes into sliding contact with the first projection 28, and the lock member 32 swings downward. When the shift lever 22 shifted to the R range is shifted to the rear side of the vehicle, the sliding surface 48 comes into sliding contact with the second projection 30, and the lock member 32 swings downward. The rear surface of the restricting portion 37 is in contact with the base body 20 and is used for shifting operation.
Is received by the base body 20.

Next, the operation of the shift lever device for an automatic transmission will be described. FIG. 5 shows the shift lever 2
2 shows a state in which 2 is shifted to the P range. In this state, the restricting portion 37 of the lock member 32 is
And is facing. Here, when the shift lever 22 is to be swung in the vehicle width direction in order to shift the shift lever 22 to another range, the first protrusion 28
7 to prevent the shift lever 22 from swinging in the vehicle width direction. FIG. 6 shows a state where the shift lever 22 is shifted to the N range. In this state, the restricting portion 37 of the lock member 32 faces the second protrusion 30. Here, when the shift lever 22 is to be swung in the vehicle width direction in order to shift the shift lever 22 to the R range, the second protrusion 30 abuts on the regulating portion 37, and the shift lever 22 is shifted in the vehicle width direction. Is prevented.

The restricting portion 37 of the lock member 32 is a common portion where the first projection 28 and the second projection 30 abut .
It is provided at the end of the lock member. Therefore,
Therefore, without using a large solenoid, the first protrusion and the
And a sufficient contact area between the second projection and the lock member
it can.

FIG. 8 shows a state in which the brake pedal is depressed with the shift lever 22 being shifted to the N range. In this case, the energization of the solenoid 40 causes the lock member 32 to swing downward, and the second protrusion 30
And the restriction portion 37 are no longer opposed to each other, so that the shift lever 22 can swing in the vehicle width direction, and the shift operation to the R range can be performed. Also in the case shown in FIG. 5, when the brake pedal is depressed, the lock member 32 swings downward, and a shift operation from the P range to another range becomes possible. The restricting portion 37 of the lock member 32 is a common portion where the first protrusion 28 and the second protrusion 30 abut, so that the lock member 3
The portion where the force of each of the projections 28 and 30 in 2 is applied is only one location of the regulating portion 37, and only this one location needs to be received by the base body 20. Therefore, the solenoid 4
The sliding resistance between the lock member 32 and the base main body 20 at the time of 0 energization is smaller than that of the conventional device of FIG. 9, so that a large solenoid is not required, and problems such as cost and storage space are eliminated.

FIG. 7 shows a state where the shift lever 20 is shifted to the R range. When the shift lever 22 that has been shifted to the R range is shifted to the front side of the vehicle, the sliding surface 46 comes into sliding contact with the first protrusion 28, and the lock member 32 is pushed down. When the shift lever 22 shifted to the R range is shifted to the rear side of the vehicle, the sliding surface 48 comes into sliding contact with the second projection 30, and the lock member 32 is pushed down. Therefore, the shift lever 22 that has been shifted to the R range can be shifted to another range without depressing the brake pedal. As described above, the shift lever 22 shifted to the R range can be shifted to another range without depressing the brake pedal because it is not necessary to consider an erroneous operation in the shift operation from the R range. is there.

[0017]

According to the shift lever device for an automatic transmission according to the present invention, regulation of the lock member is a common portion where the first protrusion and the second protrusion abuts, the locking member end
Section. Therefore , a large lock strength can be secured without using a large solenoid, and the reliability of the device can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective front view showing a shift lever device for an automatic transmission according to an embodiment of the present invention, showing a state where the shift lever is shifted to an N range.

FIG. 2 is a plan view of a gate pattern of the device of FIG.

FIG. 3 is a perspective view of the vicinity of a lower portion of the shift lever of FIG. 1;

FIG. 4 is a perspective view of the lock member of FIG. 1;

FIG. 5 is a schematic diagram showing a state where the shift lever of FIG. 1 is shifted to a P range.

FIG. 6 is a schematic diagram showing a state where the shift lever of FIG. 1 is shifted to an N range.

FIG. 7 is a schematic diagram showing a state where the shift lever of FIG. 1 is shifted to an R range.

FIG. 8 is a schematic diagram showing unlocking in a state where the shift lever of FIG. 1 is shifted to an N range.

FIG. 9 is a perspective view showing a locking mechanism of a shift lever in Japanese Patent Application No. 8-3905.

FIG. 10 is a perspective view of the vicinity of a lower portion of a shift lever in FIG. 9;

FIG. 11 is a plan view showing a gate pattern of the device of FIG. 9;

[Explanation of symbols]

 Reference Signs List 20 base body 22 shift lever 26 gate pattern 28 first protrusion 30 second protrusion 32 lock member 37 regulating portion 40 solenoid 42 biasing means 46 sliding surface 48 sliding surface

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B60K 20/02 F16H 59/10 F16H 61/22

Claims (1)

(57) [Claims] A shift lever that is swingably supported in a vehicle front-rear direction and a vehicle width direction with respect to a base body;
A crank-shaped gate pattern having a path in which a range and an N range are sequentially arranged in the vehicle front-rear direction and a shift lever can be shifted to each of the ranges only when the shift lever is swung in the vehicle width direction. A first projection provided on the shift lever and projecting in the vehicle width direction; a second projection provided on the shift lever at a predetermined distance from the first projection in the vehicle front-rear direction and projecting in the vehicle width direction.
And projections, is supported swingably in the vertical direction in the base body at one end, it has a restricting portion at the other end, in the state in which the regulating portion, the shift lever is shifted to the P range before Symbol a first protrusion can face, the shift lever is capable facing the front Stories second protrusion in a state of being shifted to the N range, a state in which the shift lever is shifted to the R range positioned between the first protrusion and the second protrusion is a lock member, with which biasing the locking member, the regulating portion of the locking member aligned with the respective projections can face height A biasing means, a solenoid connected to the lock member, and a solenoid for moving the lock member in a direction opposite to a biasing direction by the biasing means by energization by depressing a brake pedal; and a solenoid formed on the lock member and shifted to an R range. Shift Shift lever device for an automatic transmission having a sliding surface for moving the bar in a direction opposite to the biasing direction of the biasing means each projection and sliding contact locking member when the shift operation in the vehicle longitudinal direction.