JPH09263152A - Shifting device for automatic transmission of automobile - Google Patents

Abstract

(57) An object of the present invention is to provide a shift device for an automatic transmission of an automobile capable of establishing a neutral position holding mechanism for a manual mode shift path without increasing the number of parts. According to the present invention, when the shift lever 44 is tilted to the manual mode shift road side along a lateral road,
The corresponding end 66b of the position pin 66 comes into contact with the upper edge 81a of the notch 81 by a predetermined upward biasing force,
Moreover, since the upper edge portion 81a of the cutout portion 81 has a substantially mountain shape or a curved shape with the drive range position at the highest position, even if the shift lever 44 is moved to the plus side or the minus side in the manual mode shift path. The shift lever 44 always returns to the neutral position along the shape of the upper edge portion 81a. In this way, since the neutral position maintaining mechanism on the manual mode shift path can be established only by changing the shape of the original position plate, the number of parts does not particularly increase.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shift device for an automatic transmission of an automobile, and more particularly to a shift device for an automatic transmission having a manual operation function.

[0002]

2. Description of the Related Art As a conventional automatic transmission shift device for an automobile, a driver is provided with a function of an automatic transmission to add a feeling of manual operation and to switch to a manual mode while holding a D (drive) range in the automatic transmission mode. However, there is one in which a desired shift speed can be selected by manually upshifting or downshifting the shift speed (see Japanese Patent Laid-Open No. 2-8545).

For example, there is a device as shown in FIG.
In the figure, Y ₁ is the front side, Y ₂ is the rear side, X ₁ is the left side, and X ₁ is the left side.
₂ indicates the right side. The front-rear direction is the "shift direction" and the left-right direction is the "selection direction".

This device is an A / A for the original automatic shifting operation.
A T-mode shift path 1 and a manual mode shift path 2 for manual shift operation are connected by a lateral path 3 to provide a substantially H-shaped moving path 4 (note that some types are not H-shaped). The lateral path 3 connects the drive (D) range of the A / T mode shift path 1 and the neutral position of the manual mode shift path 2, and the shift lever 5 moves from the D range of the A / T mode shift path 1 to the manual mode shift path. 2 from the neutral position of the manual mode shift path 2,
By shifting the shift lever 5 to the plus side or the minus side, the shift speed can be shifted up (+) or downshift (-).

At the neutral position of the manual mode shift path 2, a clip spring 6 is fixed by a bolt 7 as a "neutral position holding mechanism" for constantly returning the shift lever 5 to the neutral position. The clip spring 6 includes a pair of tip portions 6a facing each other at an interval corresponding to the shift lever 5.
To cross road 3. The shift lever 5 coming into the manual mode shift path 1 is received between the tip portions 6a,
Shift lever 5 moved to the plus side or minus side
Each time, the structure is returned to the neutral position.

[0006]

However, in such a conventional technique, it is necessary to attach the clip spring 6 as the neutral position holding mechanism to the neutral position of the manual mode shift path 5, and accordingly, This leads to an increase in the number of parts. Further, the work of attaching the clip spring 6 is troublesome, which is also disadvantageous in terms of work efficiency.

The present invention was made by paying attention to such a conventional technique, and without increasing the number of parts,
A shift device for an automatic transmission of a vehicle capable of establishing a neutral position holding mechanism for a manual mode shift path.

[0008]

According to the first aspect of the present invention,
As a neutral position holding mechanism, the upper edge of the notch including the drive range has a roughly chevron shape or curved shape with the drive range at the highest position, and when the shift lever is tilted along the lateral path to the manual mode shift road side. Then, the corresponding end of the position pin comes into contact with the upper edge portion of the cutout portion by a predetermined upward biasing force.

According to the first aspect of the invention, when the shift lever is tilted toward the manual mode shift road along the lateral path, the corresponding end of the position pin is moved to the upper edge portion of the cutout portion by a predetermined upward biasing force. The shift lever is moved to the plus side or minus side in the manual mode shift path because it is in a contact state and the upper edge of the notch has a roughly mountain shape or curved shape with the drive range position at the highest position. Even if it is done, the shift lever always returns to the neutral position along the shape of the upper edge portion. In this way, since the neutral position maintaining mechanism on the manual mode shift path can be established only by changing the shape of the original position plate, the number of parts does not particularly increase.

According to the second aspect of the present invention, a position plate is provided also on the manual mode shift road side of the shift lever, and a notch is formed in the position plate.

According to the second aspect of the present invention, the position plate is provided also on the manual mode shift path side of the shift lever, and the position pin is engaged with the cutout portion of the two position plates. , Compared with the case of engaging only one position plate provided on the A / T mode shift road side, the engagement state of the position pin moving on the A / T mode shift road is stable, and a more reliable A / T Mode shift operation can be performed.

According to a third aspect of the present invention, the portion of the shift lever provided with the position pin is housed in the housing, and the side surface of the housing is used as a position plate.

According to the third aspect of the present invention, since the side surface portion of the housing is used as the position plate, compared to the case where a separate position plate is used,
The device can be made compact.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to FIGS. In addition, the description which overlaps with the conventional one is omitted.

First, the overall structure will be described with reference to FIG. Reference numeral 20 denotes a resin housing having a lower open structure. A pair of left and right protrusions 21 are formed in a lower portion of the housing 20 so as to face downward. The lower portion of the housing 20 is covered with an under cover 22, and is fixed to the vehicle body panel via a rubber boot 23 for vibration isolation.

The left side surface portion 24 and the right side surface portion 25 of the housing 20 are portions functioning as "position plates", respectively. Position gates 26 and 27 are formed on the left side surface 24 and the right side surface 25, respectively. In this way, since the left side surface portion 24 and the right side surface portion 25 of the housing 20 are used as the "position plate", the device can be made compact as compared with the case where another position plate is used. The details of the position gates 26 and 27 formed on the left side surface portion 24 and the right side surface portion 25 will be described later.

Position gate 2 on the left side surface 24
A switch opening 28 having a substantially convex shape is formed in the upper portion of 6, and mounting holes 29 are formed in front of and behind the switch opening 28. Then, a cover 32 incorporating a plus (+) switch 30 and a minus (-) switch 31 at the time of manual mode operation is attached to the switch opening 28. The attachment of the cover 32 is performed by inserting the pair of claw portions 33 formed on the cover 32 into the attachment holes 29. A work opening 34 is also provided in front of the position gate 26 on the left side surface portion 24.

A cover panel 35 is attached to the upper surface 40 of the housing 20. On this cover panel 35, an A / T mode shift path 36 for automatic match gear shift (A / T) operation and a manual mode shift path 37 for manual gear shift operation are connected by a lateral path 38. A moving path 39 is formed. The lateral path 38 connects the D range of the A / T mode shift path 36 and the neutral position of the manual mode shift path 37. A spring receiving member 45 is attached to the rear surface portion 42 of the housing 20.

Next, parts such as the shift lever 44 provided inside the housing 20 will be described.

Reference numeral 46 denotes a joint, which is in the left-right direction (select direction).
It has the 1st cylinder 47 which follows, and the 2nd cylinder 48 which follows the front-back direction (shift direction). A select switch 50 is attached to the joint 46 via a bracket 49. Then, the first cylinder body 47 of the joint 46 is the pin 51.
The protrusion piece 21 provided at the bottom of the housing 20
It is rotatably supported by and is freely rotatable in the front-back direction (shift direction).

The shift lever 44 has an overall cylindrical shape that penetrates in the vertical direction. The lower part has a rectangular tubular part 52, the middle part has a large diameter cylindrical part 53, and the upper part has a small diameter cylindrical part 54. An attachment piece 55 having a size that straddles the second cylindrical body 48 of the joint 46 is formed on the.

A switch operation piece 56 that can be inserted into the switch opening 28 is formed on the upper left side of the square tube portion 52, and a convex portion 57 is formed on the upper right side of the square tube portion 52. Further, a protruding piece 58 that contacts the select switch 50 is formed in front of the rectangular tube portion 52. Furthermore,
Vertically long moving holes 63 are formed on the left and right of the rectangular tube portion 52.

A compression rod 64 is inserted into the shift lever 44 from below. At the lower end of the compression rod 64, the square tube portion 52 is provided.
Through hole 65 corresponding to the moving hole 63 of
A position pin 66, which has passed through the moving hole 63, is attached to the through hole 65 in a penetrating state. Therefore, the position pin 66 can move up and down in the moving hole 63.

A spring 67 for urging the compression rod 64 upward is built in the shift lever 44, and the mounting piece 55 at the lower end portion of the shift lever 44 is built in with the spring 67 built-in. Joint 4
A bolt 68 and a nut 69 are pivotally supported in the second cylindrical body 48 of No. 6. Therefore, the shift lever 44 is rotatable in the left-right direction (selection direction) about the second tubular body 48. A cap 70 covers the upper end of the compression rod 64 protruding upward from the shift lever 44. An operation knob 71 is attached to the upper portion of the shift lever 44, and the compression rod 6 is pressed only when a button 72 provided on the operation knob 71 is pressed.
4 moves downward together with the position pin 66 against the upward biasing force of the spring 67.

On the right side of the shift lever 44, a cable lever 7 pivotally supported by a pin 51 together with the shift lever 44.
3 are provided. At the front end of the cable lever 73, a protrusion 74 for connecting a cable (not shown) for controlling the transmission is provided. A spring member 75 that elastically engages with the groove of the spring receiving member 45 is attached to the rear end of the cable lever 73. Further, an engaging hole 76 into which the convex portion 57 of the shift lever 44 can be engaged is also formed in the central portion of the cable lever 73.

Next, the basic operation of this device will be described. By moving the shift lever 44 in the shift direction within the A / T mode shift path 36, each range in the A / T mode can be selected. A feeling of moderation in each range of operation of the shift lever 44 is obtained by elastic engagement between the spring member 75 and the groove portion of the spring receiving member 45. In addition, the shift lever 44
Is on the A / T mode shift path 36, since the convex portion 57 of the shift lever 44 is engaged in the engagement hole 76 of the cable lever 73, the cable lever 73 is integrated with the shift lever 44. The transmission can be controlled by a cable (not shown) that rotates in the shift direction and is connected to the cable lever 73.

Next, while traveling in the D range in the A / T mode, the shift lever 44 is tilted to the left, the shift lever 44 is passed through the lateral path 38 and moved to the neutral position of the manual mode shift path 37.

When the shift lever 44 is tilted to the manual mode shift path 37 side, the engagement between the projection 57 and the engagement hole 76 is released, and the projection 58 of the shift lever 44 is provided on the joint 46. Since the pushing of the switch 50 is stopped, it can be detected that the shift lever 44 has entered the manual mode shift path 37. Further, the switch operation piece 56 of the shift lever 44
Passes through the switch opening 28, and the switch operating piece 56 is located in the cover 32 between the plus switch 30 and the minus switch 31. Therefore, the shift lever 4
When 4 is moved to the plus side, the switch operation piece 56 pushes the plus switch 30 to shift up, and when the shift lever 44 is moved to the minus side, the switch operation piece 56 pushes the minus switch 31 to shift down. To do.

The shift lever 44 in the manual mode shift path 37 always returns to the neutral position after being moved to the plus side or the minus side. The reason for this is explained below for each position gate 2
The shape will be described with reference to FIGS. 2 and 3 simply show the shapes of the shift lever 44 and the position gates 26 and 27.

First, the shape of the position gate 26 formed on the left side surface portion 24 of the housing 20 on the manual mode shift path 37 side will be described. The position gate 26 includes a first cutout 79 corresponding to the P (parking) range, a second cutout 80 corresponding to the R (reverse) range, an N (neutral) range, a D (drive) range, and a D2. (2nd speed) Third notch 8 including range
1 and a fourth cutout portion 82 corresponding to the D1 (1st speed) range are formed in the upper portion. The first corresponding to each range
The position pin 66 is inserted into the notches 79 to the fourth notches 82.
The respective ranges are held by engaging with each other. The D range is located in the middle of the third cutout 81, and this position is held by elastic engagement between the spring member 75 and the spring receiving member 45.

On the other hand, the position gate 27 formed on the right side surface portion 25 of the housing 20 has the same shape portion as the left side position gate 26, but the upper edge portion 81a of the third cutout portion 81 is It has a different shape than the one on the left. That is, the upper edge portion 81a of the third cutout portion 81 has a substantially chevron shape with the D range at the highest position.

Since the position gates 26 and 27 are present on both the left and right sides and the shapes of the left and right position gates 26 and 27 are the same except for the upper edge portion 81a on the right side, the position pin 66 of the position pin 66 is changed during the A / T mode shifting. Both ends 6
6a and 66b are position gates 26 and 27, respectively.
Since the first notch portion 79 to the fourth notch portion 82 are engaged,
/ T mode pin 66 for moving the mode shift path 36
The engagement state of is stable, and more reliable A / T mode shift operation can be performed.

Then, with the position pin 66 positioned in the D range at the center of the third cutout 81, the shift lever 44 is moved along the lateral path 38 into the manual mode shift path 3.
When the state is tilted to the 7 side, as a result, the corresponding end 66b of the position pin 66 tries to rise, but the position pin 66 is pressed into the upper edge portion 81a of the third cutout portion 81. Therefore, the position pin 66 relatively descends in the moving hole 63, and is brought into a state of being pressed against the upper edge portion 81a by a predetermined upward biasing force F of the spring 67. Therefore, in that state, the shift lever 44
Even if is moved to the plus side or the minus side in the manual mode shift path 37, the shift lever 44 always returns to the neutral position (D range position) along the shape of the upper edge portion 81a. As described above, since the neutral position maintaining mechanism in the manual mode shift path 37 can be established only by changing the original shape of the right side surface portion (position plate) 25, an increase in the number of parts is not particularly caused. Absent.

In the above description, the housing 20
Although the example of using the left side view 24 and the right side surface portion 25 of FIG. 2 as the “position plate” is shown, another position plate may be installed in the housing 20.

Position plates (side portions 24 and 25 of the housing 20) are provided on both left and right sides of the shift lever 44.
However, it is sufficient that at least one position plate is provided on the A / T mode shift path 36 side and the third cutout portion 81 having the upper edge portion 81a is formed therein. The shape of the upper edge portion 81a is not limited to the "mountain shape" as in the above embodiment, but may be a "curved shape" with the D range at the highest position.

Further, the H-shaped moving path 39 composed of the A / T mode shift path 36, the manual mode shift path 37, and the lateral path 38 has been taken as an example, but it is not limited to the H shape.

[0037]

According to the first aspect of the invention, when the shift lever is tilted along the lateral path to the manual mode shift road side, the corresponding end of the position pin is provided with a predetermined upward biasing force and the upper edge portion of the cutout portion. To the plus side or minus side in the manual mode shift path, because the upper edge of the notch has a roughly chevron shape or curved shape with the drive range position at the highest position. Even if the shift lever is moved, the shift lever always returns to the neutral position along the shape of the upper edge portion. In this way, since the neutral position maintaining mechanism on the manual mode shift path can be established only by changing the shape of the original position plate, the number of parts does not particularly increase.

According to the second aspect of the invention, since the position plate is provided also on the manual mode shift road side of the shift lever and the position pin is engaged with the cutout portion of the two position plates, As compared with the case where only one position plate provided on the A / T mode shift road side is engaged, the engagement state of the position pin moving on the A / T mode shift road is stable, and a more reliable A / T mode You can shift gears.

According to the third aspect of the present invention, since the side surface of the housing is used as the position plate, the apparatus can be made compact as compared with the case where a separate position plate is used.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a shift device for an automatic transmission of a vehicle according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a relationship between a shift lever and a position gate in an A / T mode state.

FIG. 3 is a perspective view showing a relationship between a shift lever and a position gate in a manual mode state.

FIG. 4 is a view showing a relationship between an upper edge portion of a cutout portion and a position pin.

FIG. 5 is a plan view showing a conventional neutral position holding mechanism for a manual mode shift path.

[Explanation of symbols]

 20 Housing 24 Left Side Part (Position Plate) 25 Right Side Part (Position Plate) 36 A / T Mode Shift Road 37 Manual Mode Shift Road 38 Lateral Road 44 Shift Lever 66 Position Pin 81 Notch including D Range 81a Upper Edge

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Hiroyuki Mizuma, 2nd Takaracho, Kanagawa-ku, Yokohama, Kanagawa Nissan Motor Co., Ltd. (72) Masaki Mizutani, 2nd Takaracho, Kanagawa-ku, Yokohama, Kanagawa Nissan Motor Co., Ltd. In the company

Claims (3)

[Claims] 1. A shift lever is supported by a joint that is rotatable in a shift direction and a select direction, so that the shift lever can be moved in a shift direction along an A / T mode shift path and a manual mode shift path, respectively. , And A /
The shift range is made movable in the select direction along the lateral path connecting the drive range position of the T mode shift path and the neutral position of the manual mode shift path, and a neutral position holding mechanism is provided on the lateral path. A position pin that is constantly urged upward and that descends only when the button above the shift lever is projected is provided to the side of the shift lever, and the position pin of the shift lever is engaged on the A / T mode shift road side of the shift lever. There is provided a position plate having a matching cutout portion, and among the cutout portions other than the parking range of the position plate, a cutout portion including a drive range position is formed at the top of an automatic transmission of an automobile. In the shift device, as the neutral position holding mechanism, the upper edge of the notch including the drive range is When the shift lever is tilted to the manual mode shift road side along the lateral path, the corresponding end of the position pin has a predetermined upward biasing force of the cutout portion. A shift device for an automatic transmission of an automobile, which is in a state of being in contact with an upper edge portion. 2. A shift device for an automatic transmission of an automobile according to claim 1, wherein a position plate is provided also on the manual mode shift road side of the shift lever, and a notch is formed in the position plate. 3. The automatic transmission for an automobile according to claim 1, wherein a portion of the shift lever provided with the position pin is housed in a housing, and a side surface portion of the housing is used as a position plate. Shift device.