JPH071983A - Maloperation preventing structure of select lever for automatic transmission - Google Patents

Abstract

PURPOSE:To provide an erroneous operation preventive structure by which an operation height of a select lever becomes constant regardless a speed change position and force applied to a stopper is reduced and any erroneous operation of the select lever of a speed change operation device is prevented. CONSTITUTION:A stopper 20 is fitted in a raising and lowering guide hole 17 of a pivotal base part 3 so as to be movable vertically slidingly freely, and a locking projection piece 21 of the stopper 20 is projected to one side from a raising and lowering guide groove, and a stopper energizing coil spring 23 is interposed between the bottom surface of the raising and lowering guide hole 17 and the bottom surface of the stopper 20, and a lever energizing coil spring 27 is fitted loosely in a spring support cylindrical part 26 of the pivotal base part 3, and one end part 28 of the lever energizing coil spring 27 is locked on the pivotal base part 2, and the other end 29 of the lever energizing coil spring 27 passes penetratingly through a slit 19 of the pivotal base part 3, and is engaged with a small hole 30 of a select lever 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gear shift operating device for use in an automatic transmission mounted on an automobile or the like, which prevents erroneous operation of a select lever of the gear shifting operating device.

[0002]

2. Description of the Related Art In order to prevent an erroneous operation of a select lever, conventionally, an erroneous operation preventing knob is provided on an upper grip of the select lever to operate from a parking operation position to a reverse operation position or to operate to a neutral operation position. There is an erroneous operation prevention mechanism in which the select lever cannot be rocked unless the knob is operated.

In addition to such an erroneous operation prevention mechanism, as shown in FIG. 10, when the operation is switched, a select lever 03 is provided in a vertical hole 02 of a lever support body 01 which can be swung back and forth with respect to the vehicle body.
Is slidably fitted up and down, and a compression coil spring 04 is interposed between the bottom surface of the vertical hole 02 and the bottom surface of the select lever 03,
Guide groove that guides the select lever 03 to swing back and forth
Stopper 07 that abuts the lower surface of the guide member 06 provided with 05
There is an erroneous operation preventing mechanism in which a concave portion 08 for locking the stopper 07 is formed on the lower surface of the guide member 06 by integrally providing the select lever 03 with the.

[0004]

In the erroneous operation prevention mechanism shown in FIG. 10, since the select lever 03 and the stopper 07 are integrated, the select operation is performed according to the height of the lower surface of the guide member 06 that contacts the upper surface of the stopper 07. There was a problem that the height of the lever 03 changed and the operation feeling changed at the gear shift operation position.

Further, the spring force of the compression coil sling 04, which gives the operation reaction force of the select lever 03, is changed by the guide member 06.
And the stopper 07, the stopper 07 is guided by the large spring force of the compression coil spring 04 when an operation that is the reverse of the restricted operation (for example, operation from the reverse operation position to the neutral operation position) is performed. Member 06
Violently colliding with each other, a large impact sound is generated, and further, at a restricted shift operation position (for example, reverse operation position), the spring force of the compression coil spring 04 is directly applied to the guide member 06 via the stopper 07, There is a drawback that a large sliding resistance is generated between the guide member 06 and the stopper 07.

[0006]

SUMMARY OF THE INVENTION The present invention relates to an improvement in a structure for preventing an erroneous operation of a select lever for an automatic transmission that solves the above-mentioned inconvenience, and relates to a specific gear shift position to another specific gear shift position. In a shift operating device for an automatic transmission in which the select lever for an automatic transmission can be swung down by pushing down the select lever, the select lever is held slidably up and down within a certain lifting range. And a stopper provided separately from the select lever so as to be locked at the upper limit position of the lever support and to be slid when the select lever descends. The present invention is characterized by comprising a stopper urging member for urging the stopper upward and a select lever urging member for urging the select lever upward.

Since the present invention is constructed as described above, if the urging force of the select lever urging member and the stopper urging member is overcome to push the select lever downward,
The stopper is pushed down, the select lever can be swung, and the gear shift operation to the required gear shift operation position can be performed.

Further, according to the present invention, when the pressing force of the select lever is released after the shift operation of the select lever to the desired shift position is completed, the select lever is urged by the urging force of the select lever urging member. Since it is locked to the body at the upper limit position, the select lever can maintain a constant height at any shift operation position, and the operation feeling does not change.

Further, in the present invention, after the shift operation of the select lever is completed, the urging force of the stopper urging member acts on the shift operation position fixing projection or the shift operation restricting projection via the stopper. The contact force between these stoppers and the projections becomes small, the swing resistance of the select lever becomes small, and the select lever can be operated lightly, and when the stoppers come off from the projections. Impact force is reduced and operation noise is reduced.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention shown in FIGS. 1 to 9 will be described below. In a gear shift operating device 1 used for an automatic transmission (not shown) mounted on an automobile, a lower end portion of a select lever 2 is slidably attached to a pivot base portion 3 as will be described later, and the pivot base portion 3 is A pivot shaft 5 oriented in the left-right direction is pivotally mounted via a pivot 4 oriented in the front-rear direction, and the pivot shaft 5 is rotatably supported by a bracket 6 integrally fixed to the vehicle body.
Is connected to a link (not shown) via a rod 7, and the link is connected to the automatic transmission via a wire (not shown).

Further, the select lever 2 is a gear shift operation device 1.
The cover 8 is made of synthetic resin and is loosely fitted in the groove 9 of the cover 8. The groove 9 is curved and deformed in the width direction at several positions in the front-rear direction to prevent erroneous operation of the select lever 2. ing.

Further, an uneven surface portion made of the same material as the cover 8
10 is integrally formed below the cover 8, and the uneven surface portion 10
On the lower surface of the, select lever 2 P, R, N, D ₄ , D
7 recesses 11 _P, 11 _R, 11 _N, 11 _D4, 11 _D3, 11 for fixing the operation positions of ₃ , 2, 1 with moderation respectively
_2, 11 ₁ are formed.

Furthermore, a swing arm 12 is provided at the left end of the swing shaft 5.
Is attached at a right angle, a base end of a fixed spring 13 formed by stacking several leaf springs is integrally attached to the tip of the swing arm 12, and a holder 14 integrally provided at the tip of the fixed spring 13. The roller 15 is pivotally attached to the roller 15, and the roller 15 is elastically engaged with the recess 11 of the uneven surface portion 10.

Moreover, a display portion 16 for displaying the stop position of the select lever 2 is provided on the upper left side surface of the cover 8.
A pointer (not shown) integrated with the swing shaft 5 can display the operation position corresponding to the swing operation position of the select lever 2.

Therefore, the lifting guide hole of the pivot base 3
A stopper 20 is vertically slidably fitted into the stopper 17, and a locking projection 21 of the stopper 20 is protruded to one side from the lift guide groove 18, and the bottom surface of the lift guide hole 17 and the stopper
A stopper urging coil spring 23 is provided on the bottom surface of the stopper 20, and the stopper 20 is urged upward by the spring force of the stopper urging coil spring 23.

A locking ring 25 is integrally fitted to a lower end projection 24 of the select lever 2 which penetrates the pivot base 3 and the stopper 20 from the upper side to the lower side, and is attached to a spring supporting cylindrical portion 26 of the pivot base 3. The lever-urging coil spring 27 is loosely fitted, one end 28 of the lever-urging coil spring 27 is locked to the pivot base 3, and the other end 29 of the lever-urging coil spring 27 is It penetrates through the slit 19 of the pivot base 3 and is engaged with the small hole 30 of the select lever 2.
The select lever 2 is biased upward by the spring force of the lever biasing coil spring 27.

An engaging recess 22 is provided on the other side of the stopper 20.
Is formed so that the other end 29 of the lever urging coil spring 27 can be removably engaged.

Further, below the right side wall 31 of the groove 9 of the cover 8, a notch step portion 32 centering on the swing shaft 5 is formed.

Since the embodiment shown in FIGS. 1 to 9 is constructed as described above, it is shown in FIGS. 4 to 5 when the select lever 2 is located at the parking position 9 _P of the groove 9. As described above, the select lever 2 is tilted slightly forward along the vertical plane, and the locking projection 21 of the stopper 20 is engaged with the notch step portion 32 in the right side wall 31 of the groove 9. No, select lever 2 and stopper
Twenty is at the upper limit.

Further, it is impossible to shift the select lever 2 rightward from the parking position 9 _{P of the} groove 9 to the reverse position 9 _R , and an erroneous operation is prevented.

However, as shown in FIGS. 6 to 7, when the select lever 2 is strongly pushed down by overcoming the springs of the stopper urging coil spring 23 and the lever urging coil spring 27, the stopper 20 is pushed down. Since the upper surface of the locking projection 21 of is located below the notch step portion 32, the select lever 2 can be tilted to the right, and the select lever 2 can be swung backward and moved to the reverse position 9 _R. Therefore, the reverse shift operation can be performed.

Further, as shown in FIG. 8 to FIG. 9, when the select lever 2 is further rearwardly applied while the select lever 2 is gear-shifted to the reverse position 9 _R , the stopper projection of the stopper 20 is engaged. The upper surface of the piece 21 has a notch 32
The engaging concave portion 22 can slide while being in contact with, and when the neutral position 9 _N is approached, the suppression of the left swing of the select lever 2 is released, and the select lever 2 can be shifted to the neutral position 9 _N.

Further, since a notch step portion is not formed on the left side wall (not shown) of the groove 9 and the engaging projection 21 of the stopper 20 is not provided on the left side, the groove 9 is formed along the groove 9. D ₄
The position of the select lever 2 can be changed to the position 9 _D4 , the D ₃ position 9 _D3 and the second speed position 9 ₂ , but from the second speed position to the first speed position 9 ₁ , the cutout step portion 32 of the right side wall 31 also
The gear cannot be changed unless the select lever 2 is pressed.

Furthermore, from the first speed position 9 ₁ to the second speed position 9 ₂
When the gear shifting operation to the second gear position or the gear shifting operation from the second speed position 9 ₂ to the D ₃ position 9 _D3 is performed, the notch step portion 32 engages the stopper 20 with the stopper 20
Since there is no regulation of 21, gear shifting is possible without pushing down the select lever 2.

However, from the neutral position 9 _N to the reverse position 9 _R
During the gear shift operation to, the gear shift operation cannot be performed unless the select lever 2 is pushed down due to the restriction of the locking projection 21 by the notch step portion 32, so an erroneous operation can be prevented in advance.

Further, the locking projection 21 of the stopper 20 is a notch step portion.
When engaged with 32, only the spring force of the stopper urging coil spring 23 is applied to the locking projection 21 and the notch step portion.
Since it acts between 32, the wear of both is reduced, the durability of the gear shift operating device 1 is greatly improved, and the select lever 2 can be swung back and forth lightly.

Even if the locking projection 21 of the stopper 20 is engaged with the notch step portion 32 or not, the select lever is kept engaged until the locking ring 25 is always engaged with the bottom surface of the pivot base 3. Since 2 is rising, there is no change in the feeling of gear shifting operation.

Further, when the select lever 2 is swung back and forth to move to a predetermined gear shift operation position, the roller force of the fixed spring 13 causes the roller 15 to move to the uneven surface portion 10.
Since it is elastically engaged with any one of the recesses 11, it is possible to freely select the select lever 2 at a desired operation position with a moderation and maintain the operation state.

[Brief description of drawings]

FIG. 1 is a perspective view illustrating an embodiment of a structure for preventing an erroneous operation of a select lever for an automatic transmission according to the present invention.

2 is a plan view of the cover shown in FIG. 1. FIG.

FIG. 3 is an exploded perspective view of an essential part of the embodiment.

FIG. 4 is an enlarged vertical cross-sectional side view of an essential part, which is partially cut along a line IV-IV in FIG. 2 in a state where the select lever is operated to the parking operation position.

5 is an enlarged vertical sectional view of an essential part cut along a line VV in FIG.

FIG. 6 is an enlarged vertical cross-sectional side view of essential parts in a state where the select lever is pushed downward and tilted rightward before the select lever is moved from the parking operation position to the reverse operation position.

7 is an enlarged vertical sectional view of an essential part cut along a line VII-VII in FIG.

FIG. 8 is an enlarged vertical cross-sectional side view of essential parts in a state where the select lever is moved to the reverse operation position.

9 is an enlarged vertical sectional view of an essential part cut along the line IX-IX in FIG.

FIG. 10 is a partially longitudinal side view of a conventional erroneous operation preventing device for a select lever for an automatic transmission.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Gearshift operating device, 2 ... Select lever, 3 ... Pivot base, 4 ... Pivot, 5 ... Oscillation shaft, 6 ... Bracket, 7 ...
Rod, 8 ... Cover, 9 ... Groove, 10 ... Uneven surface part, 11 ... Recessed part, 12 ... Swing arm, 13 ... Fixed spring, 14 ... Holder, 15 ... Roller, 16 ... Display part, 17 ... Lift guide hole, 18 …
Elevating guide groove, 19 ... Slit, 20 ... Stopper, 21 ... Engagement projection piece, 22 ... Engagement recess, 23 ... Stopper bias coil spring, 24 ... Lower end projection, 25 ... Engagement ring, 26 ... Spring support Cylindrical part, 27 ... Coil spring for urging lever,
28 ... One end, 29 ... Other end, 30 ... Small hole, 31 ... Right side wall 31, 32
… Notched steps.

Claims (1)

[Claims] 1. A shift operating device for an automatic transmission, wherein the select lever for an automatic transmission can be swung from a specific shift position to another specific shift position by pushing down the select lever. A lever support body that supports the select lever so that it can slide up and down within a certain lifting range and is swingably supported; and a lever support body that is locked at the upper limit position and slides when the select lever descends. A stopper provided separately from the select lever so as to be moved, a stopper urging member for urging the stopper upward, and a select lever urging member for urging the select lever upward. A structure that prevents erroneous operation of the automatic transmission select lever.