JPH0732902A - Shift device for automobile automatic transmission - Google Patents

Abstract

PURPOSE:To rationalize structure and facilitate assembling by retaining a shift lever at a neutral position with a neutral position retaining mechanism, and detecting it with a shift detection sensor when the shift lever is operated to a second shift path in a detent plate provided with first and second paths for A/T and manual modes. CONSTITUTION:A base plate 2 is provided with a detent 3, of which a horizontal part 3a is equipped with a shift path 3c for an A/T mode, a lateral path 3d, and a shift path 3e for a manual mode. The horizontal part 3a is also equipped with a shift lever neutral position retaining mechanism 30 having a torsion spring 32. When a shift lever 11 is operated to the shift path 3e from the shift path 3c, a micro switch 9 is turned on to detect switching to the manual mode, and the shift lever 11 is retained at the neutral position by the torsion spring 32. Next, when the shift lever 11 is operated in the shift-up direction or in the shift-down direction in the shift path 3e, a micro switch 37 or 38 is turned on.

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 driver is switched to the manual mode while being held at the position of D (drive) range in the automatic transmission mode. There is one in which a desired shift speed can be selected by manually shifting up or down the shift speed. As such a shift device, for example, Japanese Patent Laid-Open No. 2-8
There is a shift device for an automatic transmission of an automobile disclosed in Japanese Patent No. 545.

This shift device is constructed as shown in FIGS. That is, in the hollow beam 50 fixed to the vehicle body, the lower part of the shift lever 51 is the cardan joint 5
It is rotatably supported in the front-rear (shift) direction (FIG. 8) and the left-right (select) direction (FIG. 10) by two rotary shafts 53 and 54. On the other hand, as shown in FIG. 9, the cover plate 55 of the hollow beam 50 is automatically shifted (hereinafter referred to as “A / T”).
Called) mode shift path 55a, D of the shift path 55a
Sideways 55b and sideways 55 provided laterally at the range position
A shift pattern including a manual mode shift path 55c that is in communication with b and is parallel to the shift path 55a is provided.

On the upper surface of the cover plate 55, there is a lateral passage 55b.
A sensor 56 that detects the switching of the shift lever 51 from the A / T mode to the manual shift mode is provided on one side, and sensors 57 and 58 that detect shift-up and shift-down operations of the shift lever 51 are provided 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.

The neutral position holding mechanism 60 includes a shift lever 5
One side wall 5 of the hollow beam 50 above the rotary shaft 53
0a and a pin 61 that is planted substantially horizontally and the side wall 50.
Two pins 62 and 63, which are housed at a in the a direction along the shift direction (front-back direction) of the shift lever 51 at a predetermined interval and are slidably housed in the axial direction, and these pins 62. Compression springs 64 and 65 for supporting the respective base ends of the base plates 63 and 63, and brackets 66 and 67 for attaching them to the side wall 50a.
Etc.

The shift lever 51 controls a transmission (not shown) via the 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 in the D range position from the shift paths 55a to 55c (from the position indicated by the solid line to the position indicated by the chain double-dashed line in FIG. 10), the tip of the pin 61 is inserted between the pins 62 and 63 and compressed. Spring 64,
The spring force of 65 holds the neutral position in the shift path 55c.

When the shift lever 51 is operated in the up-shifting direction against the spring force of the compression spring 64 in this state, the sensor 57 senses 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. On the contrary, when the shift lever 51 is operated in the downshift direction against the spring force of the compression spring 65, the sensor 58 detects 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 has the shift path 55a.
When it is operated from the shift path 55c to the shift path 55c, the sensor 56 detects it when passing the lateral path 55b and outputs a signal, and when it is operated in the shift up direction in the shift path 55c, the sensor 57 moves in the shift down direction. When operated, the sensor 58 outputs a signal each time the sensor 58 is operated. A control device (not shown) detects that the A / T mode is switched to the manual mode by the signal from the sensor 56, and the sensor 5
When a signal is input from the sensor 7, the transmission is electrically controlled to shift up, and when a signal is input from the sensor 58, the transmission is shifted down. As a result, it is possible to select the shift speed that the driver likes.

[0009]

However, since the cover plate 55 is fixed to the hollow beam 50 in the above-mentioned shift device, it is difficult to put the shift path on the basis of the rotation axis of the shift lever 51. Moreover, since the cover plate 55 is separate from the hollow beam 50, the number of assembling steps is large. Further, since the basic structure except the shift lever 51 is composed of the right side portion 50a, the left side portion 50b, the bottom plate 50c and the cover plate 55, there is a problem that the number of parts is large.

The present invention has been made in view of the above points, and rationalizes the structure by forming a shift path for guiding the shift lever in the detent plate and providing a shift detection sensor and a shift lever neutral position holding mechanism in the manual mode. It is an object of the present invention to provide a shift device for an automatic transmission of an automobile, which facilitates assembly and improves the accuracy of parts.

[0011]

To achieve the above object, according to the present invention, in a shift device for an automatic transmission of an automobile having an A / T mode and a manual mode, a base plate and an upper surface of the base plate are provided. The lower end is welded to and erected, and the upper part is bent at a substantially right angle to form a horizontal portion. The first shift path for the A / T mode for guiding the shift lever to the horizontal portion and the first shift path for the manual mode are provided. A detent plate having a shift pattern formed of two shift paths and lateral paths connecting these shift paths; and a detent plate on the side of the second shift path opposite to the lateral path facing the lateral path. And a neutral position holding mechanism that takes in the shift lever when the shift lever is operated to the second shift path and holds the neutral position in the neutral position, and is disposed at both ends of the second shift path of the horizontal portion. Is is obtained by a structure in which a shift sensor for detecting a shift operation of the shift lever.

[0012]

The shift lever can be rotated along the first shift path in the A / T mode by the shift pattern formed on the horizontal portion of the detent plate. A / T
When the mode is switched to the manual mode, the first shift path is operated through the lateral path to the second shift path. At this time, the shift lever is held at the neutral position by the neutral position holding mechanism. When the shift lever is operated in the upshift or downshift direction in the second shift path, the shift detection sensor detects this. The shift pattern is formed on the horizontal portion of the detent plate, and the lever neutral position holding mechanism and the shift detection sensor are provided, whereby the structure of the shift device is rationalized.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings. 1 and 2, a shift device 1 for an automatic transmission of an automobile is provided such that a lower end of a detent plate 3 is welded and hangs slightly toward one side from a center of an upper surface of a base plate 2 and along a front-rear direction. Cage, upper part 3a
Is bent at a right angle to one side with respect to the vertical portion 3b to form a horizontal portion (hereinafter referred to as "horizontal portion 3a"). Horizontal part 3
As shown in FIG. 3, a is a shift path 3 for the A / T mode.
c, the lateral path 3d and the shift pattern of the manual mode shift path 3e are provided. 2 shift paths 3
c and 3e are provided parallel to the shift direction (front-rear direction), and the shift path 3c is provided on the side closer to the driver.
Is located on the side far from the driver. The lateral path 3d communicates with the shift paths 3c and 3e at the D range position of the shift path 3c.

The rotating shaft 4 in the shift direction is the base plate 2
The base plate 2 is arranged in the left-right direction substantially in the center of
Is rotatably supported by bearings 2a to 2c provided on the. The joint 5 is composed of two bearings 6 and 7 orthogonal to each other. The bearing 7 is welded to one side of the upper portion of the bearing 6 and the lower end of a detent bracket 8 is welded to the other side thereof. The bearing 6 is axially supported by the shift direction rotary shaft 4.
A bracket 12 to which a lower end of a shift lever 11 is welded is rotatably supported by a bearing 7 on a select direction rotary shaft 13. The shift lever 11 is connected to the rotary shaft 4
Thus, the rotary shaft 13 can be separately rotated in the shift direction (front-back direction) and 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 thereto. The detent bracket 8 is provided with a shift lever switching detection sensor, for example, a micro switch 9, facing the side surface of the shift lever 11, and an actuator 9a.
Is in contact with the shift lever 11.

The upper portion 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 attached to the upper end thereof. The indicator panel 14
Are arranged on the horizontal portion 3a of the detent plate 3, and the shift patterns formed on the horizontal portion 3a, that is, the shift path 3c, the lateral path 3d, and the shift path 3e correspond to the shift path 14a and the lateral path 14b. , The shift path 14c is formed (FIG. 2).

The cable arm 16 is rotatably supported on the other side of the rotary shaft 4 by a bearing 17 (FIG. 2) welded to the lower end thereof so as to be rotatable in the shift direction of the shift lever 11. The cable arm 16 is arranged on the opposite side of the detent bracket 8 with the shift lever 11 interposed therebetween. 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 its tip. Leaf spring 22
A roller 23 is rotatably supported at the tip of the positioning notch 8a provided in the detent bracket 8.
Alternatively, it can be engaged with 8b by a spring force. The notch 8a determines the position of the shift lever 11 in the A / T mode, 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).
Is welded, and its tip is engageable with a notch (not shown) provided in the cable arm 16. That is, in the shift lever 11, the arm 26 engages with the cable arm 16 to integrally rotate the cable arm 16 in the A / T mode, and the arm 26 separates from the cable arm 16 in the manual mode. 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 side position of the shift path 3e. The neutral position holding mechanism 30 is composed of a column 31, a torsion spring 32, and a stopper 33, as shown in FIGS. The pillar 31 is, for example, a bolt, and is used for the shift path 3 of the horizontal portion 3a.
An outer side of e, that is, a side opposite to the lateral path 3d, is inserted from above into a hole 3f formed on the extension of the center line of the lateral path 3d, and a head portion 31a is welded to the upper surface of the horizontal portion 3a. Further, in the horizontal portion 3a, a square hole 3g having substantially the same width as the lateral groove 3d is provided between the shift path 3e and the hole 3f.

The stopper 33 is a plate material bent at a right angle, and one end 33a is welded to the upper surface of the horizontal portion 3a, and the other end 3 is formed.
3b penetrates the square 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 distance between them so that the shift lever 11 can move in and out. The width is approximately the same as the groove width. A torsion spring 32 is attached to the bolt 31 via a collar 34.
The winding portion 32a of the collar is externally fitted and supported, and a nut 36 is screwed to the lower end of the collar 3 via a washer 35.
We support No. 4 without deviating.

In the torsion spring 32, the arms 32b and 32c are arranged so as to sandwich the stopper 33 as shown in FIG. 5, and the torsion spring 32 is located in the vicinity of a portion communicating with the lateral path 3d by bridging the shift path 3e. . Then, the torsion spring 32 includes the arm portion 32b,
The opening 32c faces the lateral groove 3d. Furthermore, the arm 3
The tips of 2b and 32c are slightly curved outward so that the shift lever 11 can easily enter and leave. Stopper 33
Is approximately the same as the groove width of the lateral passage 3d, and therefore,
The distance between the arm portions 32b and 32c of the torsion spring 32 is approximately the same width as the outer diameter of the shift lever 11. This allows the shift lever 11 to be easily inserted between the arm portions 32b and 32c of the torsion spring 32 when shifting from the lateral path 33d into the shift path 3e.

As shown in FIG. 3, on the upper surface of the horizontal portion 3a of the detent plate 3, manual mode shift detection sensors, for example, microswitches 37 and 38 are disposed on one side of the front and rear ends of the shift path 3e. It is fixed by a bracket 39. These micro switches 37,
In the reference numeral 38, the tips of the actuators 37a and 38a are in the shift path 3 respectively.
It extends so as to face the vicinity of the front end and the rear end of e, and is pushed to be switched on when the shift lever 11 is operated to the front end or the rear end of the shift path 3e. These micro switches 37, 38 and the above-mentioned shift lever sensing micro switch 9 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 cutout 8a of the detent bracket 8, and the shift lever 11 is in the A / T mode.
/ T mode position is fixed. Further, the micro switch 9 is switched 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
It rotates in the shift direction together with 1 and the shift cable 19 controls the transmission.

While driving in the D range position, the driver operates the shift lever 11 to perform a manual operation while operating the shift path 3c.
When the shift path 3e is operated via the lateral path 3d, the shift lever 11 tilts to the left (FIG. 2), and the micro switch 9 is turned on. Detent mechanism 2 at the same time
The roller 23 of No. 5 is pushed out from 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 confirmed. 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 arm portions 32b and 32c of the torsion spring 32 as shown by the chain double-dashed line in FIG.
The spring force of the torsion spring 32 holds the neutral position in the shift path 3e. Next, the shift lever 11
When, for example, the shift path 3e is operated in the upshift direction as shown in FIG. 6, the arm portion 32b of the torsion spring 32 is
Is pushed in the winding direction against the spring force. On the other hand, the arm 32c
Are locked by a stopper 33. When the shift lever 11 is located at the front end of the shift path 3e, the actuator 37a (FIG. 3) of the micro switch 37 is pressed to switch on.

When a signal is input from the microswitch 9, the control device detects that the A / T mode has been switched to the manual mode, and the microswitch 37
When a signal is input from the transmission, the transmission is electrically controlled to shift up. When the operating force of the shift lever 11 in the up-shifting direction is released, the arm portion 32b of the torsion spring 32 returns to the original position in FIG.
Press on 3. At this time, the torsion spring 32 has the arm portion 32b.
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 in the shift path 3e as shown in FIG.
When it is operated in the shift down direction as shown in FIG. 5, the arm portion 32c of the torsion spring 32 is pushed in the winding direction against the spring force. On the other hand, the arm portion 32b is locked by the stopper 33. When the shift lever 11 is located at the rear end of the shift path 3e, the actuator 38a of the micro switch 38 is
When (Fig. 3) is pressed, the switch is turned on.

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

[0029]

As described above, according to the present invention, the horizontal portion formed by bending the upper portion of the detent plate is
By forming the shift lever shift pattern and providing the shift lever manual mode shift detection sensor and the shift lever neutral position holding mechanism, the structure of the shift device is rationalized, the number of parts is reduced, and the number of parts is reduced. This has the effects of facilitating assembly and improving part accuracy.

[Brief description of drawings]

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

FIG. 2 is a rear cross-sectional end view of a part of FIG.

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

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

FIG. 5 is a bottom view of FIG.

FIG. 6 is a diagram showing an operation when a shift lever of the neutral position holding mechanism of FIG. 5 is operated to shift up.

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

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

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

10 is a cross-sectional view taken along the line XX of FIG.

11 is a cross-sectional view taken along the arrow line XI-XI in FIG.

[Explanation of symbols]

 1 shift device 2 base plate 3 detent plate 4, 13 rotary 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 strut 32 torsion spring 33 stopper 39 bracket

Claims (1)

[Claims] 1. A shift device for an automatic transmission of an automobile having an A / T mode and a manual mode. And a horizontal portion, and a shift consisting of a first shift path for A / T mode for guiding the shift lever to the horizontal portion, a second shift path for manual mode, and a lateral path connecting these shift paths. When a detent plate having a pattern is formed and is disposed on the side of the horizontal portion opposite to the lateral path of the second shift path, facing the lateral path, and when the shift lever is operated to the second shift path. A neutral position holding mechanism that takes in this and holds it in a neutral position, and a shift detection that is provided at both ends of the second shift path of the horizontal portion and that detects a shift operation of the shift lever. A shift device for an automatic transmission of an automobile, comprising: a sensor.