JP2914109B2 - Shifting device for automatic transmission of automobile - 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 device for an automatic transmission of an automobile.

[0002]

2. Description of the Related Art As a shift device for an automatic transmission of an automobile, a manual operation function is added to the function of the automatic transmission, and the automatic transmission mode is switched to the manual mode while being held at the position of the D (drive) range in the automatic transmission mode. Has manually shifted up or down gears so that a desired gear can be selected. For example, Japanese Patent Laid-Open Publication No.
No. 545 discloses a shift device for an automatic transmission of an automobile.

[0003] This shift device is configured as shown in FIGS. That is, the lower part of the shift lever 51 is inserted into the hollow joint 50 fixed to the vehicle body.
The first and second rotating shafts 53 and 54 are rotatably supported in the front-rear (shift) direction (FIG. 8) and the left-right (select) direction (FIG. 10). On the other hand, as shown in FIG. 9, the cover plate 55 of the hollow beam 50 has an automatic transmission (hereinafter referred to as "A / T").
Mode shift path 55a, D of the shift path 55a.
Lateral path 55b, lateral path 55 provided laterally at the range position
A shift pattern is provided which is made up of a manual mode shift path 55c which is communicated with b and is parallel to the shift path 55a.

A lateral path 55b is provided on the upper surface of the cover plate 55.
On one side, sensors 56 for detecting switching of the shift lever 51 from the A / T mode to the manual shift mode are provided, and sensors 57 and 58 for detecting shift-up and shift-down operations of the shift lever 51 at both front and rear ends of the shift path 55c. Is provided. A shift lever neutral position holding mechanism 60 as shown in FIGS. 10 and 11 is provided between the shift lever 51 and the hollow beam 50.

[0005] The neutral position holding mechanism 60 includes a shift lever 5.
The side wall 5 of the hollow beam 50 is provided on one side above the one rotation shaft 53.
0a, a pin 61 implanted substantially horizontally, and a side wall 50.
2A, two pins 62, 63 housed slidably in the axial direction, with their ends facing the shift lever 51 in the shift direction (front-back direction) at a predetermined interval, and these pins 62. , 63 and brackets 66, 67 for attaching these to the side wall 50a.
And the like.

The shift lever 51 controls a transmission (not shown) via a cable 59 when in the A / T mode, and is disengaged from the cable 59 when in the manual mode. When the shift lever 51 is operated from the shift paths 55a to 55c (the position indicated by the two-dot chain line from the position indicated by the solid line in FIG. 10) in the D range position, the tip of the pin 61 is inserted between the pins 62 and 63, and the compression is performed. Spring 64,
The shift path 55c is held at the neutral position by the spring force of 65.

In this state, when the shift lever 51 is operated in the shift-up direction against the spring force of the compression spring 64, the sensor 57 detects the shift lever 51.
Then, when the operating force is released, the shift lever 51 is held at the neutral position by the spring force of the compression spring 64. Conversely, when the shift lever 51 is operated in the downshift direction against the spring force of the compression spring 65, the sensor 58 senses the shift lever 51. When the operating force is released, the shift lever 51 is held at the neutral position by the spring force of the compression spring 65.

On the other hand, the shift lever 51 is
When the shift path 55c is operated, the sensor 56 detects this when passing through the horizontal path 55b and outputs a signal, and when operated in the shift up direction in the shift path 55c, the sensor 57 moves in the shift down direction. When operated, a signal is output each time the sensor 58 is operated. The control device (not shown) senses that the mode has been switched from the A / T mode to the manual mode by a signal from the sensor 56, and
7, the transmission is electrically controlled to shift up, and when a signal is input from the sensor 58, the transmission is shifted down. This allows the driver to select a desired gear position.

[0009]

However, the shift lever neutral position holding device 60 of the shift device is slidably disposed on the pin 61 implanted in the shift lever 51 and the side wall 50a of the hollow beam 50. Pins 62, 63, compression springs 64, 65 supporting these pins 62, 63, and a bracket 6 for attaching these to the side wall 50a.
The number of parts is large because 7, 68, etc. are required. In addition, since the structure is complicated, the assembling work is very troublesome, the workability is poor, and the manufacturing cost is high.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and provides a shift device for an automatic transmission of an automobile which can hold a neutral position of a shift lever in a shift path for a manual mode with a simple structure. The purpose is to provide.

[0011]

According to the present invention, there is provided a shift apparatus for an automatic transmission of an automobile having an A / T mode and a manual mode. A shift pattern is formed by folding a horizontal portion and including a first shift path for the A / T mode for guiding the shift lever, a second shift path for the manual mode, and a horizontal path connecting these shift paths. A support that is erected on the opposite side of the second shift path from the lateral path of the formed detent plate, and a winding portion is supported by the support, and both arms bridge the second shift path. And a stopper fixed to the horizontal portion restricts the closing width of both arms so that the shift lever can be moved in and out, and the shift lever is moved to the neutral position in the second shift path. Is obtained by a configuration in which a torsion spring for holding.

[0012]

When the shift lever is operated from the first shift path to the second shift path through the lateral path to switch from the A / T mode to the manual mode, the shift lever is moved between the two arms of the torsion spring in the second shift path. Is locked. The torsion spring holds the shift lever at the neutral position by the spring force of both arms. When the shift lever is operated in the upshift or downshift direction in the second shift path, one corresponding arm of the torsion spring is pushed against the spring force. At this time, the other arm is held by the stopper. When the operation force of the shift lever in the shift-up or shift-down direction is released, the torsion spring causes the arm portion to return to the stopper position by the spring force, and simultaneously pushes the shift lever back to the neutral position and holds the shift lever in the neutral position. I do.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the accompanying drawings. In FIGS. 1 and 2, a shift device 1 of an automatic transmission of an automobile has a lower end of a detent plate 3 welded vertically to one side from a center of an upper surface of a base plate 2 in a front-rear direction. The horizontal portion (hereinafter referred to as “horizontal portion 3a”) is bent at a right angle to one side with respect to
It is said that). As shown in FIG. 3, the horizontal section 3a is provided with shift patterns of an A / T mode shift path 3c, a horizontal path 3d, and a manual mode shift path 3e. The two shift paths 3c, 3e are provided in parallel with the shift direction (front-back direction), and the shift path 3c is disposed on a side closer to the driver, and the shift path 3e is disposed on a side farther from the driver. Then, the horizontal road 3d is the D of the shift road 3c.
It communicates with the shift paths 3c and 3e at the range position.

The shift direction rotation shaft 4 is connected to the base plate 2.
The base plate 2 is disposed substantially at the center of the
Are rotatably supported by bearings 2a to 2c provided at the center of the vehicle. The joint 5 is composed of two bearings 6 and 7 that are orthogonal to each other. The bearing 7 is welded to one upper side of the bearing 6 and the lower end of a detent bracket 8 is welded to the other side. The bearing 6 is supported by the shift direction rotation shaft 4.
A bracket 12 with a lower end of a shift lever 11 welded to the bearing 7 is rotatably supported by a select direction rotating shaft 13. Then, the shift lever 11 is
Thus, the rotary shaft 13 can rotate in the shift direction (front-back direction), and the rotating shaft 13 can rotate in the select direction (left-right direction). The detent bracket 8 is arranged on the side of the shift lever 11 (on the side of the shift path 3e) so as to be spaced apart and opposed. A shift lever switching sensor, for example, a micro switch 9 is attached to the detent bracket 8 so as to face the side surface of the shift lever 11.
Are in contact with the shift lever 11.

The upper part of the shift lever 11 extends upward through the shift path 3c of the detent plate 3 and the shift path 14a of the indicator panel 14, and a knob 15 is mounted on the upper end. The indicator panel 14
Are disposed on the horizontal portion 3a of the detent plate 3 and correspond to the shift patterns formed on the horizontal portion 3a, that is, the shift paths 14a, 14b corresponding to the shift paths 3c, 3d, and 3e. , A shift path 14c is formed (FIG. 2).

The cable arm 16 is rotatably supported on the other side of the rotary shaft 4 in a shift direction of the shift lever 11 by a bearing 17 (FIG. 2) welded to the lower end. The cable arm 16 is arranged on the opposite side of the shift lever 11 from the detent bracket 8. A pin 18 is fixed to the upper end of the cable arm 16, and one end of a shift cable 19 is connected to the pin 18. The other end of the shift cable 19 is connected to a transmission (not shown).

A bracket 21 is horizontally welded to the shift lever 11 so as to face the detent bracket 8.
A leaf spring 22 is fixed to the tip. Leaf spring 22
A roller 23 is rotatably supported at the front end of the bracket, and a positioning notch 8a provided in the detent bracket 8 is provided.
Or 8b can be engaged by a spring force. The notch 8a determines the position of the A / T mode of the shift lever 11, and the notch 8b determines the position of the shift lever 11 in the manual mode. The detent bracket 8, the leaf spring 22 and the roller 23 constitute a detent mechanism 25 for determining each position of the shift lever 11 in the A / T mode and the manual mode.

The shift lever 11 has an arm 26 (FIG. 2).
Are welded, and the distal end thereof can be engaged with a notch (not shown) provided in the cable arm 16. That is, when the shift lever 11 is in the A / T mode, the arm 26 engages with the cable arm 16 to rotate the cable arm 16 integrally, and in the manual mode, the arm 26 is separated from the cable arm 16 and engaged. Is canceled.

The horizontal portion 3a (FIG. 1) of the detent plate 3 is provided with a shift lever neutral position holding mechanism 30 at a position lateral to the shift path 3e. The neutral position holding mechanism 30 includes a support column 31, a torsion spring 32, and a stopper 33, as shown in FIGS. The support column 31 is, for example, a bolt, and the shift path 3 of the horizontal portion 3a is
e is inserted from above into a hole 3f formed on the outside of the horizontal path 3d on the side opposite to the horizontal path 3d and extending from the center line of the horizontal path 3d, and the head 31a is welded to the upper surface of the horizontal portion 3a. In the horizontal portion 3a, a square hole 3g having substantially the same width as the lateral groove 3d is formed between the shift path 3e and the hole 3f.

The stopper 33 is a plate material bent at a right angle. One end 33a is welded to the upper surface of the horizontal portion 3a, and the other end 3a.
3b penetrates the rectangular hole 3g and projects downward substantially parallel to the bolt 31. The stopper 33 regulates the closing width of the arm portions 32b and 32c of the torsion spring 32, and keeps the interval between them so that the shift lever 11 can enter and exit. The width is substantially the same as the groove width. The bolt 31 has a torsion spring 32 through a collar 34.
A nut 36 is screwed into a lower end of the collar 3 via a washer 35.
No. 4 is undeniably supported.

As shown in FIG. 5, the torsion spring 32 is arranged with arms 32b and 32c sandwiching a stopper 33, and bridges the shift path 3e and is located in the vicinity of a communication portion with the lateral path 3d. . Then, the torsion spring 32 includes an arm portion 32b,
32c is open facing the lateral groove 3d. Furthermore, the arm 3
The respective ends of 2b and 32c are slightly curved outward to make it easy for the shift lever 11 to enter and exit. Stopper 33
Is approximately the same width as the groove width of the horizontal path 3d.
The distance between the arm portions 32b and 32c of the torsion spring 32 is substantially the same as the outer diameter of the shift lever 11. This allows the shift lever 11 to be easily inserted between the arms 32b and 32c of the torsion spring 32 when shifting from the lateral path 33d to the shift path 3e.

On the upper surface of the horizontal portion 3a of the detent plate 3, manual mode shift detection sensors, for example, micro switches 37 and 38 are disposed on one side of the front and rear ends of the shift path 3e as shown in FIG. It is fixed by a bracket 39. These microswitches 37,
Reference numeral 38 indicates that the tips of the actuators 37a and 38a
The shift path 11e is extended toward the vicinity of the front end and the rear end of the shift path 3e, and is pressed to be turned on when the shift lever 11 is operated to the front end and the rear end of the shift path 3e. These microswitches 37 and 38 and the aforementioned microswitch 9 for shift lever sensing are connected to a control device (not shown).

The operation will be described below. As shown in FIG. 2, when the shift lever 11 is in the A / T mode, the roller 23 of the detent mechanism 25 is engaged with the notch 8a of the detent bracket 8, and the shift lever 11
/ T mode position. The microswitch 9 is turned off. At this time, the shift lever 11 and the cable arm 16 are engaged by the arm 26, and the cable arm 16 is
1 and the transmission is controlled by the shift cable 19.

While the vehicle is traveling in the D range position, the driver operates the shift lever 11 to perform manual operation.
When the shift lever 3e is operated via the horizontal road 3d from the left side, the shift lever 11 is tilted to the left (FIG. 2), and the microswitch 9 is turned on. Detent mechanism 2 at the same time
5 is pushed out of the notch 8a of the detent bracket 8 against the spring force of the leaf spring 22, engages with the notch 8b, and positions the shift lever 11 in the switching direction, that is,
The manual mode position is determined. At this time, a sense of moderation is obtained.

When the shift lever 11 is operated from the lateral path 3d to the shift path 3e, the shift lever 11 is inserted between the arms 32b and 32c of the torsion spring 32 as shown by a two-dot chain line in FIG.
The torsion spring 32 is held at the neutral position in the shift path 3e by the spring force. Next, the shift lever 11
For example, when the shift path 3e is operated in the shift-up direction as shown in FIG. 6, the arms 32b of the torsion spring 32
Is pressed in the winding direction against the spring force. On the other hand, the arm part 32c
Is locked by a stopper 33. When the shift lever 11 is located at the front end of the shift path 3e, the operator 37a (FIG. 3) of the micro switch 37 is pressed, and the switch is turned on.

When a signal is input from the micro switch 9, the control device detects that the mode has been switched from the A / T mode to the manual mode, and the micro switch 37
When a signal is input from the controller, the transmission is electrically controlled to shift up. When the operation force of the shift lever 11 in the shift-up direction is released, the arm 32b of the torsion spring 32 returns to the original position in FIG.
3 is pressed. At this time, the torsion spring 32 is
The reaction force (spring force) directly acts on the shift lever 11 to return and hold the shift lever 11 to the neutral position.

The shift lever 11 moves through the shift path 3e as shown in FIG.
When the operation is performed in the downshift direction as shown in FIG. 7, the arm 32c of the torsion spring 32 is pushed in the winding direction against the spring force. On the other hand, the arm 32b is locked by the stopper 33. When the shift lever 11 is located at the rear end of the shift path 3e, the operator 38a of the microswitch 38 is turned on.
(FIG. 3) is pressed but turned on.

When a signal is input from the micro switch 38, the control unit electrically controls the transmission to shift down. When the operation force of the shift lever 11 in the downshift direction is released, the arm 3 of the torsion spring 32 is released.
2c returns to the original position in FIG. 5 by the spring force, and returns and holds the shift lever 11 to the neutral position.

[0029]

As described above, according to the present invention, the shift lever can be held in the neutral position by a single torsion spring in the shift-up and shift-down directions in the manual mode. The number of component parts is small, the structure is simple, there are effects such as easy assembly and reduction of manufacturing cost.

[Brief description of the drawings]

FIG. 1 is a side view showing one embodiment of a shift device for an automatic transmission of an automobile according to the present invention.

FIG. 2 is a partial cross-sectional rear end view of FIG. 1;

FIG. 3 is a plan view of a horizontal portion of the detent plate of FIG. 1;

FIG. 4 is a sectional view of a neutral position holding mechanism of the shift lever of FIG. 1;

FIG. 5 is a bottom view of FIG. 4;

6 is a diagram showing an operation when a shift lever of the neutral position holding mechanism in FIG. 5 is upshifted.

FIG. 7 is a diagram showing an operation when a shift lever of the neutral position holding mechanism in FIG. 5 is shifted down.

FIG. 8 is a cross-sectional view of a conventional shift device for an automatic transmission of an automobile.

FIG. 9 is a plan view of a shift pattern of a shift lever provided on the cover plate of FIG. 8;

FIG. 10 is a sectional view taken along the line XX of FIG. 8;

11 is a sectional view taken along the line XI-XI in FIG. 10;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shift apparatus 2 Base plate 3 Detent plate 4, 13 Rotating shaft 5 Joint 8 Detent bracket 9, 37, 38 Micro switch 11 Shift lever 25 Detent mechanism 30 Shift lever neutral position holding mechanism 31 Support post 32 Torsion spring 33 Stopper 39 Bracket

Continuation of front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B60K 20/00-20/08 F16H 59/00-59/12

Claims (1)

(57) [Claims] 1. A shift device for an automatic transmission of an automobile having an A / T mode and a manual mode, wherein the A / T mode is provided on a base plate, the upper portion is bent to form a horizontal portion, and a shift lever is guided. The first shift path for the manual mode, the second shift path for the manual mode, and the lateral path connecting the shift paths, the detent plate having a shift pattern formed thereon and the lateral path of the second shift path. A support erected on the opposite side and a winding portion are supported by the support, and both arms cross the second shift path, face a communicating portion with a lateral path, and are fixed to the horizontal portion. An automobile having a torsion spring for restricting the closing width of both arms by a stopper so that the shift lever can be moved in and out, and holding the shift lever at a neutral position in the second shift path. Shift device for an automatic transmission.