JPH09112667A - Shift lever device of automatic transmission - Google Patents

Abstract

PROBLEM TO BE SOLVED: To generate a sense of moderateness in operating a shift lever. SOLUTION: A shift lever device concerned is equipped with a pair of shift lever engagements 14, 14, the extension part 15 of shift lever engagement and an engagement lug 7 to rotate the shift lever engagements 14, 14 in the reverse direction in compliance with the fore-and-aft motions of a shift lever, a spring 27 to energize the engagements 14, 14 toward the neutral position, and a check spring 11 and a pair of check cams 22 to generate a brake torque at each rotating angle specified. Ratchet wheels 17, 19 and a spring 24 are furnished to couple the engagements 14 with respective check cams 22, 22, when the engagement 14 rotates in association with the shift lever motions fore and aft within a manual gate, and to disengage when return to the neutral position is made.

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.

[0002]

2. Description of the Related Art In a vehicle equipped with an automatic transmission,
While up-shifting and down-shifting are automatically performed during driving in the drive range, it has been proposed that this can be done manually. FIG. 7 shows a shift lever device of this type of automatic transmission. In this device, by shifting the shift lever 1 from the drive range D in the main gate 2 to the manual gate 3 side and moving it back and forth, shift up and shift down can be performed.
Further, as shown in FIG. 6, by engaging the shift lever 1 with the spring 50 when the shift lever 1 is tilted to the manual gate 3 side, after the shift lever 1 is operated, even if the hand is released, the shift lever 1 will not move. It automatically returns to the neutral position (this similar structure is disclosed in, for example, Japanese Patent Laid-Open No. 2-854).
No. 5).

[0003]

However, in this device, when the shift lever 1 is moved back and forth within the manual gate 3 by a predetermined amount, a switch (not shown) is simply pushed by the shift lever 1 to shift the gear. Since only up and downshifts were performed, there was no moderation in the operation of the shift lever 1, and the operation feeling was not very good.

In view of such circumstances, it is an object of the present invention to provide a shift lever device for an automatic transmission which gives a feeling of moderation to the operation of the shift lever.

[0005]

A shift lever device for an automatic transmission according to the present invention includes a rotating member, and when the shift lever is tilted to a manual gate side, the shift lever is connected to the rotating member. A coupling means for rotating the rotating member in response to the forward / backward movement of the shift lever, a spring for urging the rotating member toward the neutral position, and a pair of cams for generating a stopping torque for each predetermined rotation angle. A one-way mechanism that connects the rotating member to both the cam mechanisms when the mechanism and the rotating member rotate together with the shift lever in the manual gate before and after, and releases the connection when returning to the neutral position. And a clutch mechanism.

Further, a ratchet wheel provided with the one-way clutch mechanism on a side surface of the rotating member, a connecting member having a ratchet wheel engageable with the ratchet wheel, and the connecting member attached to the rotating member side. A check cam that is configured by a spring that urges the ratchet wheels to engage with each other, and that has the cam mechanism that alternately has ridges and valleys on the peripheral surface and that is spline-coupled to the connecting member, The check cam may be engaged with the check spring, and the rotating member, the connecting member, and the check cam may be coaxially supported.

The one-way clutch mechanism is composed of a pair of ratchet wheels supported by separate shafts and click members that engage with the ratchet wheels, and the cam mechanism has a mountain portion on the circumferential surface. Consists of a pair of check cams having valleys alternately and integrally formed with the ratchet wheels, and a pair of check springs fixed to the rotating members to engage with the check cams. You may.

Further, the connecting means is engaged between the extending portions extending outward from the rotating members in the radial direction and the extending portions when the shift lever is tilted to the manual gate side. Therefore, it may be configured with an engagement lug provided on the shift lever.

[0009]

FIG. 1 is an exploded view of a shift lever device for an automatic transmission according to the present invention. The arrow FR in the figure indicates the front of the vehicle.

In the figure, reference numeral 1 is a shift lever, and a bracket portion 4 at the lower end thereof is pivotally connected to a cylindrical member 6 by a pin 5. This connection has a certain degree of rigidity so that the shift lever 1 can be held in a tilted state. Also,
An engagement lug 7 is fixed to the body portion 1 a of the shift lever 1 so as to be adjacent to the bracket portion 4.

Reference numeral 8 is a support member installed on a floor panel or the like, and four vertical walls 10 are erected on a bottom wall 9 thereof. A pair of check springs 11 are fixedly mounted on the bottom wall 9. Further, each vertical wall 10 is provided with a shaft hole 12 in a row, and one of the vertical walls 10 is provided with a pole 13
Has been erected.

Reference numeral 14 denotes a shift lever engagement serving as a rotating member. The extension 15 extends radially outward from the outer periphery of the shift lever engagement, and a spring engaging portion 16 is formed at the tip of the extension 15. is there. A ratchet wheel 17 is integrally formed on the side surface of the shift lever engagement 14.

Reference numeral 18 denotes a connecting member, and a ratchet wheel 19 capable of engaging with the ratchet wheel 17 of the shift lever engagement 14 is integrally formed on the end surface thereof, and a spline 21 is formed on the outer peripheral surface of the cylindrical portion 20. is there. 2
A check cam 2 has peaks 22a and valleys 22b alternately formed on the outer peripheral surface thereof, and spline grooves 23 formed on the inner peripheral surface thereof.

In assembling this device, the shift lever engagement 14 and the ratchet wheels 17 and 19 of the connecting member 18 are engaged with each other, and the connecting member 1
After the spring 24 is externally inserted into the cylindrical portion 20 of No. 8, the spline 21 of the connecting member 18 is engaged with the spline groove 23 of the check cam 22. Then, the two assemblies 25, 25 assembled in this way are respectively housed between the vertical walls 10, 10 of the support member 8 and the check cams 22, 2 are inserted.
Check the valleys 22b and 22b of the check springs 11 and 11.
After engaging the protrusions 11a, 11a with the pin 26, the pin 26 is inserted into the shaft hole 12 of the support member 8, the shaft hole 14a of the shift lever engagement 14 and the shaft hole 18a of the connecting member 18.
And the pin 26 is inserted into the cylindrical member 6 to assemble the assemblies 25, 25 and the shift lever 1 to the support member 8. Finally, the spring 27 is externally inserted to the pole 13 of the support member 8, and both ends thereof are engaged with the spring locking portions 16 of the shift lever engagements 14 and 14, respectively.

In the assembly 25 on the left side shown in FIG. 1, the ratchet wheels 17 and 19 are engaged with each other only when the shift lever engagement 14 is rotated in the counterclockwise direction.
The ratchet wheels 17 and 19 are engaged with each other only when the shift lever engagement 14 is rotated clockwise.

Next, the operation of this device will be described.

Now, from the drive range D in the main gate 2 shown in FIG.
When it is tilted to the side, the engagement lug 7 is extended to the extension portion 1 of the shift lever engagement 14, 14 as shown in FIG.
Engage between 5 and 15. When the shift lever 1 is pushed forward in this state, the engagement lug 7 causes the right shift lever engagement 14 shown in FIG. 1 to rotate clockwise against the biasing force of the spring 27. At this time, the ratchet wheels 17 and 19 on the right side mesh with each other,
Check cam 22 shift lever engagement 14
However, when the peak portion 22a of the check cam 22 pushes down the check spring 11 and the convex portion 11a of the check cam 22 engages with the valley portion 22b adjacent to the check cam 22, the feel is felt by the shift lever 1 from the hand. It is transmitted. In other words, depending on the pitch of the valleys 22b of the check cam 22,
The operation stroke of the shift lever 1 is determined.

When the hand is released from the shift lever 1,
The shift lever engagement 14 is rotated counterclockwise by the biasing force of the spring 27 whose rear end is engaged with the stopper S, and the shift lever 1 is automatically returned to the neutral position. In this case, the slope of the ratchet wheel 17 slides on the slope of the ratchet wheel 19, the cylindrical portion 20 of the connecting member 18 is pushed into the check cam 22, and the ratchet wheel 17 runs idle. It should be noted that when the convex portion 11a of the check spring 11 is engaged with the valley portion 22b adjacent to the check cam 22, the shift lever 1 pushes the switch means (not shown) to complete the upshift. . The same operation is performed when the shift lever 1 is pulled toward you.

According to the shift lever device of this embodiment, when the shift lever 1 is moved back and forth in the manual gate 3, the convex portion 11a of the check spring 11 is engaged with the trough portion 22b of the check cam 22. In addition, since the feel is transmitted from the shift lever 1 to the hand, a feeling of moderation occurs in the operation of the shift lever 1.

Further, when the shift lever 1 is tilted to the manual gate 3 side, the engagement lug 7 engages between the extending portions 15 and 15 of the shift lever engagements 14 and 14, and the shift lever 1 moves to the shift lever engagement 14. , 14 are connected, the mechanism is simple and the number of parts is small.

Further, the shift lever engagement 14
Is connected to the check cam 22 via a one-way clutch mechanism, an excessive load or friction does not act on each member, and improvement in durability can be expected.

In this embodiment, the two ratchet wheels 17 and 19 constitute a one-way clutch mechanism, but it is also possible to replace this with another known mechanism. Also, the check cam 22 and the check spring 11
Composes a cam mechanism, and the engagement lug 7 and the extension portions 15, 15 of the shift lever engagements 14, 14 compose a connecting means. However, various modifications of these mechanisms are possible. Further, the stopper S may not regulate the movement of the spring 27, but may regulate the movement of the shift lever engagement 14 engaged with the spring 27, as indicated by the broken line.

FIG. 2 shows a second embodiment of the present invention.
The assembly A of the shift lever 1 has the same structure as that of the first embodiment, and therefore the same reference numerals are given and the description thereof is omitted.

In the figure, reference numeral 30 is a support member installed on a floor panel or the like.
32 and 33 are fixed at substantially the same height, and a shaft hole 34 is formed thereunder. A pole 35 is provided upright on the upper end of the support member 30. A check cam 36 has peaks 36a and valleys 36b alternately formed on the outer peripheral surface thereof. A ratchet wheel 37 is integrally formed on the side surface of the check cam 36.
7 is rotatably supported on the front and rear shafts 31 and 33 of the support member 30. The check cams 36, 36 are formed by means of retaining means (not shown) such as cotter pins, and are used for the shafts 31, 3.
It is prevented from dropping from 3.

Reference numeral 38 is a click member, which is composed of a pair of click pieces 39, 39 and a spring 40. When the click member 38 is fitted on the central shaft 32 of the support member 30, the two click pieces 39, 39 are pushed outward by the spring 40 and engaged with the ratchet wheels 37, 37, respectively (see FIG. 4). ). The ratchet wheel 37 on the left side of the drawing is allowed to rotate only clockwise, whereas the ratchet wheel 37 on the right side is allowed to rotate only counterclockwise.

Reference numeral 41 is a shift lever engagement serving as a rotating member, and a check spring 42 is provided at the upper end thereof.
Is fixed, and a spring locking portion 43 is formed. Then, the two shift lever engagements 41, 41 are rotatably supported on the central shaft 32 of the support member 30, and the convex portions 42a, 42a of the check springs 42, 42 are respectively formed on the troughs 36 of the check cam 36.
It is engaged with b. The click member 38 and the shift lever engagement 41 are also prevented from falling off the shaft 32 by means of retaining means (not shown) such as a split pin.
Further, a spring 44 is externally fitted to the pole 35 of the support member 30, and both ends of the spring 44 are engaged with the shift lever engagement 4
1, 41 are engaged with the spring engaging portions 43, 43, respectively. Further, the pin 45 is inserted through the shaft hole 34 of the support member 30 and the cylindrical member 6 of the shift lever assembly A, and the tip thereof is inserted through and locked by another support member 46 (see FIG. 5).

Next, the operation of this device will be described.

Also in this device, when the shift lever 1 is tilted toward the manual gate 3 from the drive range D in the main gate 2 shown in FIG. 7, the engagement lug 7 shifts the shift lever engagement 41, as shown in FIG.
41 between. When the shift lever 1 is pushed forward in this state, the shift lever engagement 41 is pushed by the engagement lug 7 and rotates forward against the biasing force of the spring 44. At this time, the vertical surface 37a of the ratchet wheel 37 on the left side shown in FIG. 4 is engaged with the click piece 39 of the click member 38 to prevent the check cam 36 from rotating in the counterclockwise direction. While pressing the convex portion 42a against the outer peripheral surface of the check cam 42, the shift lever engagement 41
I will exercise together with. Check spring 42
When the convex portion 42a of the vehicle rides on the mountain portion 22a of the check cam 36 and engages with the adjacent valley portion 36b, the feel is transmitted from the shift lever 1 to the hand. That is, the operation stroke of the shift lever 1 is determined by the pitch of the troughs 36b of the check cam 36.

When the hand is released from the shift lever 1,
The shift lever engagement 41 is rotated clockwise by the urging force of the spring 44, and the shift lever 1 automatically returns to the neutral position. At that time, since the ratchet wheel 37 rotates while the slope 37b pushes the click piece 39 of the click member 38 away, that is, the ratchet wheel 37 is allowed to rotate in the clockwise direction, the check cam 36 is The convex portion 42a of the check spring 42 is rotated while the valley portion 36b is engaged.

According to the shift lever device of this embodiment, when the shift lever 1 is moved back and forth within the manual gate 3, the convex portion 42a of the check spring 42 engages with the trough portion 36b of the check cam 36. In addition, since the feel is transmitted from the shift lever 1 to the hand, a feeling of moderation occurs in the operation of the shift lever 1.

Further, since the check cam 36 and the ratchet wheel 37 are integrated and two sets are supported on separate shafts, the size in the width direction is reduced, the installation on the vehicle body is facilitated, and the number of parts is reduced. It can be small.

[0032]

According to the first aspect of the present invention, when the shift lever is moved back and forth within the manual gate, the rotation of the rotating member is transmitted to the cam mechanism via the one-way clutch mechanism and is emitted by the cam mechanism. Since the feeling of the stopping torque is transmitted from the shift lever to the hand, a feeling of moderation occurs in the operation of the shift lever.

Further, when the one-way clutch mechanism and the cam mechanism are constituted as in claim 2, since the rotating member is coaxially connected to the cam mechanism via the one-way clutch mechanism, excessive load and friction are applied to each member. It does not occur, and the durability can be improved.

Further, when the one-way clutch mechanism and the cam mechanism are constituted as in claim 3, the check cam and the ratchet wheel are integrated, and two sets of these are supported on separate shafts, so that the dimension in the width direction becomes small. The installation on the car body is easy and the number of parts is small.

When the connecting means is constructed as in claim 4, when the shift lever is tilted to the manual gate side,
Since the rotating member is directly driven by the engagement lug, the mechanism is simple and the number of parts is small.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a first embodiment of the present invention.

FIG. 2 is a view of the assembled state of FIG. 1 viewed from the rear.

FIG. 3 is an exploded perspective view showing a second embodiment of the present invention.

4 is a side view of the assembled state of FIG. 3 with a supporting member removed.

5 is a rear view of the assembled state of FIG.

FIG. 6 is a perspective view showing a conventional shift lever device.

FIG. 7 is a perspective view showing the external appearance of a shift lever device of an automatic transmission.

[Explanation of symbols]

 1 ... Shift lever 2 ... Main gate 3 ... Manual gate 7 ... Engagement lug 11 ... Check spring 14 ... Shift lever engagement 15 ... Extension part 17 ... Ratchet car 19 ... Ratchet wheel 22 ... Check cam 24 ... Spring 27 ... Spring

Claims (4)

[Claims] 1. A shift lever device for an automatic transmission, wherein a shift lever is tilted from a drive range in a main gate to a manual gate side and moved back and forth to perform a shift up and a shift down. Connecting means for connecting the shift lever to the rotating member when the shift lever is tilted to the manual gate side, and rotating the rotating member in response to forward / backward movement of the shift lever, and the rotating member. A spring for urging the lever toward the neutral position side, a pair of cam mechanisms for generating a stopping torque at each predetermined rotation angle, and when the rotating member rotates with the front and rear of the shift lever in the manual gate, It is provided with a one-way clutch mechanism that connects the rotating member to both of the cam mechanisms and releases the connection when returning to the neutral position. Shift lever device for an automatic transmission to be butterflies. 2. A ratchet wheel provided with the one-way clutch mechanism on a side surface of the rotating member, a connecting member having a ratchet wheel engageable with the ratchet wheel, and the connecting member attached to the rotating member side. A check cam that is configured by a spring that urges the ratchet wheels to engage with each other, and that has the cam mechanism that alternately has ridges and valleys on the peripheral surface and that is spline-coupled to the connecting member, The shift lever device for an automatic transmission according to claim 1, wherein the shift lever device comprises a check cam and a check spring that engages with the rotary member, the connecting member, and the check cam that are coaxially supported. 3. The one-way clutch mechanism is composed of a pair of ratchet wheels supported on separate shafts and click members that engage with the ratchet wheels respectively, and the cam mechanism has a mountain portion on a peripheral surface. Alternating valleys,
And a pair of check cams integrally formed with each of the ratchet wheels, and a pair of check springs fixedly mounted on the rotating members to engage with the check cams. 1. A shift lever device for an automatic transmission according to 1. 4. The connecting means for engaging between the extending portion extending outward in the radial direction from the rotating member and the extending portion when the shift lever is tilted to the manual gate side. The shift lever device for an automatic transmission according to any one of claims 1 to 3, wherein the shift lever device comprises an engagement lug provided on the shift lever.