JPH05180335A - Speed change operation device - Google Patents

Abstract

PURPOSE:To improve the shift feeling to a parking range and the other respective ranges by making the distance from the turning center of a detent lever to the recessed part corresponding to a parking range bigger than the distance to the recessed parts corresponding to the other respective ranges except the parking range. CONSTITUTION:A detent lever 50 is provide with semi-circular recessed parts 52P, 52R, 52D, 52L corresponding to respective ranges of, for example, P (parking), R (reverse), N (neutral), D (drive), L (low drive) on the periphery there of. The distance S1 from the turning center A of the detent lever 50 to the recessed part 52P corresponding to the parking range is made bigger than the distance S2 to the recessed parts 52R, 52N, 52D, 52L corresponding to respective ranges of the other R, N, D, L except the parking range. Thereby, the shift feeling to the parking range and the other ranges can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shift operating device,
In particular, a recess corresponding to each range of the detent lever connected to the operating lever connected to the select lever of the automatic transmission is provided, and the tip of the plunger movable in the contacting / separating direction is engaged with these select levers. The present invention relates to a gear shift operation device that determines the shift position of the.

[0002]

2. Description of the Related Art An internal combustion engine mounted on a vehicle is rotated at a certain rotation speed or higher and the rotation speed of a drive shaft is set as a running condition in order to smoothly utilize the generated horsepower. It is necessary to adjust the rotational force accordingly. Further, the vehicle is operated at a rotational speed at which the engine output becomes maximum even in any traveling state, and a transmission is provided to effectively use the maximum output. In addition, many automatic transmissions are used for this transmission that are easy to drive and can be operated smoothly and smoothly by starting, accelerating, and decelerating, automatically and steplessly according to the running conditions. There is.

This automatic transmission is a combination of a fluid coupling or a torque converter, an auxiliary transmission and a shift control device. The operation of these devices is controlled by a hydraulic control valve that is a hydraulic control mechanism having a valve body.

As a gear shift operation device, Japanese Patent Laid-Open No. 60-82
There is one disclosed in Japanese Patent No. 441. The parking support of the parking lock device disclosed in this publication has a central portion of a fan-shaped manual plate rotatably attached to a transmission case by a pivot shaft, and has notches P, R corresponding to a plurality of ranges on its outer circumference. N, D, L, 〓, 〓 are provided, and the manual plate is rotated by the operation of the manual lever, and the roller provided at the tip of the detent spring is fitted into the corresponding notch to give a feeling of moderation to the operation of the manual lever. I have it.

An automatic transmission for a vehicle is one in which a belt is used to continuously and steplessly change the gear ratio, and the driving force of an internal combustion engine is automatically converted at a required gear ratio in accordance with the running state of the vehicle and taken out. Is.

The automatic transmission has a driving pulley on an input shaft communicating with an internal combustion engine, a driven pulley on an output shaft, and a belt wound between the driving pulley and the driven pulley. There is.

The drive side pulley has a drive side fixed pulley section piece fixed to the input shaft and a drive side movable pulley section piece mounted on the input shaft so as to be axially movable and non-rotatable. .. The driven-side fixed pulley portion fixed to the output shaft of the driven-side pulley and the driven-side movable pulley portion mounted on the output shaft so as to be axially movable and non-rotatable. There is.

The hydraulic clutch is provided by connecting an output shaft and a final output shaft rotatably fitted on the output shaft. By the engagement / disengagement operation of the hydraulic clutch, the driving force output from the output shaft of the automatic transmission to the final output shaft is interrupted.

As shown in FIG. 3, the final output shaft is connected to a drive wheel (not shown) via an intermediate shaft 104 provided in the speed change device 102. Between the final output shaft and the intermediate shaft 104, a forward / reverse switching mechanism 106 for switching the forward / backward engagement state is provided. The forward / reverse switching mechanism 106 has a forward gear 108, a reverse gear 110, and a switching sleeve 112 as a switching member. Forward gear 1
Reference numeral 08 denotes a forward output gear 114 fixed to the final output shaft.
And the intermediate shaft 10 so as to mesh with the forward output gear 114.
4 and a forward switching gear 116 that is rotatably supported by the gear 4.

The reverse gear 110 includes a reverse output gear 118 fixed to the final output shaft, a reverse switching gear 120 rotatably supported by the intermediate shaft 104, a reverse output gear 118 and a reverse gear. And an idler gear (not shown) that meshes and connects the gear switching gear 120.

The switching sleeve 112 includes the intermediate shaft 104.
Mounted on the shaft so as to be movable in the axial direction and non-rotatable, and by the axial movement, the forward switching gear 116 and the backward switching gear 120.
One of the two is connected non-rotatably to the intermediate shaft 104, and the forward / rearward engagement state is switched.

A drive-side rotation speed sensor (not shown) for detecting the rotation speed of the drive-side pulley and a drive-side rotation speed sensor (not shown) for detecting the rotation speed of the driven-side pulley are provided. A final output rotation speed sensor (not shown) for detecting the rotation speed is provided, and the carburetor throttle opening, the carburetor idle position, the accelerator pedal signal, the brake signal, and the power mode option are combined with the pressure sensor (not shown) and signals from these rotation speed sensors. A control means (not shown) is provided for inputting various signals such as signals and shift lever position to perform control.

The control means controls the belt ratio and the clutch disengagement state of the automatic transmission in various control modes according to various input signals.

A shift servo valve 122 for supplying / discharging hydraulic pressure is provided to switch the forward / reverse switching mechanism 106. As shown in FIGS. 3 and 7, the shift servo valve 122 is provided with a piston 128 slidably in a cylinder 126 of a valve body 124, and one end side of a shift servo rod 130 is connected to the piston 128 to shift the shift. A shift fork 132 engaged with the switching sleeve 112 of the forward / reverse switching mechanism 106 is fixed to the other end of the servo rod 130.

The shift servo valve 122 includes the cylinder 1
First chamber 1 defined by piston 128 in 26
When the hydraulic pressure is supplied to 34 and the hydraulic pressure in the second chamber 136 is discharged, the piston 128 moves the shift servo rod 1
30 is moved, the switching sleeve 112 is moved to the forward switching gear 116 side by the shift fork 132, and the forward switching gear 116 is rotatably connected to the intermediate shaft 104.
Switch to the forward engagement state. On the other hand, when the hydraulic pressure is supplied to the second chamber 136 defined by the piston 128 in the cylinder 126 and the hydraulic pressure of the first chamber 134 is discharged, the shift servo valve 122 causes the piston 128 to move the shift servo rod 130. The switching sleeve 112 is moved and the shift fork 132 moves the switching sleeve 112 to the reverse switching gear 12.
0 to move the reverse switching gear 120 to the intermediate shaft 104.
Is connected non-rotatably to the reverse engagement state.

In order to supply / discharge the hydraulic pressure to / from the hydraulic clutch and supply / discharge the hydraulic pressure to / from the shift servo valve 122,
A manual shift valve 142 is provided which is switched by the operating rod 140 of the shift mechanism 138 of the automatic transmission.

In order to prevent engagement of the hydraulic clutch when the shift servo valve 122 is inoperative, a hydraulic supply stop mechanism 144 is provided for stopping the supply of clutch pressure, which is the hydraulic pressure, to the hydraulic clutch.

A guide (not shown) for the parking rod 148 is provided above the spool valve 146 of the manual shift valve 142, and a projection for preventing the spool valve 146 from falling is provided on this guide, and a valve (not shown) of the manual shift valve 142 is provided. The body is provided with a rib for preventing the spool valve 146 from falling off.

Further, the spool valve 1 is connected to the detinting lever 150 of the shift mechanism 138 and the other end is connected to the spool valve 1.
The actuating rod 140 connected to 46 is pushed toward the spool valve 146.

The detent lever 150 is
As shown in FIG. 6, it is formed in a fan shape, and is pivotally attached to the transmission case by a shaft (not shown) so as to be rotatable around a point A which is the center of rotation.

On the outer circumference of the detent lever 150, for example, P (parking), R (reverse), N
(Neutral), D (drive), L (low drive) a plurality of semicircular recesses 152P corresponding to each range,
152R, 152N, 152D and 152L are formed.

When the detent lever 150 is rotated by operating a select lever (not shown), for example, as shown in FIG.
A plunger 154 with a hemispherical tip engaging is provided in 52N. The plunger 154 is provided so as to be movable in the tubular member 156 in the contacting / separating direction of the detent lever 150, and one end of the plunger 154 is fixed to the tubular member 156 by a pin 158 so that the detent lever 6 approaches in the approaching direction. Is urged to move to.

Reference numeral 162 is an operating lever, and 164 is a shift servo.

[0024]

In the conventional gear shift operation device, the shift feeling during the shift operation to the parking (P) range is the pressing force of the detent spring 160 as shown in FIGS. 2 and 6. It is determined by the balance with the spring force of the parking rod 148.

Then, a general detent lever 150
As shown in FIG. 9, the recess 152 corresponding to the parking (P) range from the rotation center A of the detent lever 150.
Corresponding to each range of R (reverse), N (neutral), D (drive), and L (low drive) excluding the parking (P) range from the rotation center A of the detent lever 150 with respect to the distance Sa1 to P. Multiple semi-circular recesses 1
Distance Sa to 52R, 152N, 152D, 152L
It is formed to make 2 small.

Therefore, when the pressing force of the detent spring 160 is set to be stronger than the spring force of the parking rod 148, the shift feeling when the plunger 154 is fitted into the recess 152P corresponding to the parking (P) range is improved. Can be made

However, when the pressing force of the detent spring 160 is set to be stronger than the spring force of the parking rod 148, the distance Sa2 is formed to be slightly larger than the distance Sa1, so that R (reverse) other than the parking (P) range is set. ), N (neutral), D (drive), and L (low drive) ranges, a large operating force is required when the plunger 154 is fitted into the plurality of semicircular recesses 152R, 152N, 152D, 152L. Therefore, the shift feeling is deteriorated and the usability is poor.

Further, the pressing force of the detent spring 160 is made weaker than the spring force of the parking rod 148, and R (reverse), N (neutral), D (drive), L (low drive) excluding the parking (P) range. When the setting is made to improve the shift feeling to each range, the parking pole 16 shown in FIG.
6 may not fit into the parking wheel 168, which may reduce reliability and may be disadvantageous in practical use.

Further, in order to eliminate the above-mentioned inconvenience,
The return springs 170 and 172 shown in FIG. 5 may be set weakly. However, when the return springs 170 and 172 are set weakly, the parking pole 166 may be ridden due to vibrations or the like when the vehicle is running, and the parking pole and the parking wheel may be separated from each other. There is an inconvenience that there is a risk that a clicking sound will be generated.

[0030]

Therefore, in order to eliminate the above-mentioned inconvenience, the present invention contacts a recess corresponding to each range of a detent lever connected to an operating lever connected to a select lever of an automatic transmission. In a gear shift operation device that determines the shift position of the select lever by engaging the tip of a plunger movable in the separating direction, the distance from the rotation center of the detent lever to the recess corresponding to the parking range is set to the parking range. It is characterized in that it is configured to be larger than the distance to the recess corresponding to each range other than the above.

[0031]

With the invention as described above, the pressing force of the detent spring when it is fitted into the recess corresponding to the parking range is made stronger than the pressing force of the detent spring when it is fitted into the other recess L, In addition to improving the shift feeling to the parking range, it also improves the shift feeling to other R (reverse), N (neutral), D (drive) and L (low drive) ranges other than the parking range. ing.
Further, by forming the detent lever by press punching, the structure is not complicated at all, and it is easy to manufacture like the conventional one, and the cost is low.

[0032]

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a shift operating device 2 according to an embodiment of the present invention.
The detent lever 50 of FIG.

In FIG. 1, the detent lever 50 is
On the outer periphery, for example, P (parking), R (reverse), N
(Neutral), D (drive), L (low drive) corresponding to a plurality of semicircular recesses 52P, 5
2R, 52N, 52D and 52L are formed respectively.

At this time, the distance S1 from the rotation center A of the detent lever 50 to the recess 52P corresponding to the parking range is set to R (reverse), N (neutral), D (drive) other than the parking range. L
Recesses 52R, 5 corresponding to each range of (low drive)
The distance S2 to 2N, 52D, and 52L is larger than the distance S2.

More specifically, as shown in FIG. 1, the distance S1 from the rotation center A of the detent lever 50 to the recess 52P.
And recesses 52R, 52N, 52D corresponding to respective ranges of R (reverse), N (neutral), D (drive), and L (low drive) except the parking range from the rotation center A of the detent lever 50. When setting the distance S2 to 52L, the distance S1 is set to the conventional recess 52.
Use the one in the P position, and use the recesses 52R, 52N, 52D,
52L is low, that is, the distance S2 is short, and the distance S1 is
And the distance S2 is set to, for example, 0.6 〓 or more.

Further, the recess 5 corresponding to the parking range
The first riding portion 74 between the recesses 52R corresponding to the 2P and R (reverse) ranges is provided with other recesses 52R and N (neutral) corresponding to the R (reverse) range.
Between the recesses 52N corresponding to the range, between the recesses 52N corresponding to the N (neutral) range and the recesses 52D corresponding to the D (drive) range, and between the recesses 52D and L (low drive) corresponding to the D (drive) range. ) For example, the second riding portion 76 side is formed lower so that the height H is higher than the second riding portion 76 between the recesses 52L corresponding to the range.

Next, the operation will be described.

By a gear shift operation of a select lever (not shown), the tip of a plunger (not shown) is inserted from the recess 52P corresponding to the parking range to the recess 52R corresponding to the R (reverse) range, or to the R (reverse) range. When the recess 52R corresponding to the parking range is fitted into the recess 52P corresponding to the parking range, the tip of the plunger rides on the first riding portion 74, and then to the recess 52R corresponding to the R (reverse) range or the parking range. It will be fitted in the recess 52P corresponding to the range.

In addition, R other than the parking range
(Reverse), N (Neutral), D (Drive),
In the shifting operation between the ranges of L (low drive), the tip of the plunger rides on the second riding portion 76 which is formed lower than the first riding portion 74, and then is fitted into a predetermined recess. ..

As a result, the distance S1 from the rotation center A of the detent lever 50 to the recess 52P is reduced from the rotation center A of the detent lever 50 to the recesses 52R, 52N and 52D.
By making the distance S2 to 52L larger than the distance S2, the pressing force of the detent spring at the time of fitting into the recess 52P corresponding to the parking range is set to the other recesses 52R, 5R.
It can be made stronger than the pressing force of the detent spring when it is fitted into 2N, 52D, 52L, and the shift feeling to the parking range can be improved, and other R (reverse) except the parking range,
The shift feeling to each range of N (neutral), D (drive), and L (low drive) can also be improved.

Further, by making the distance S1 larger than the distance S2, the pushing force of the detent spring at the time of fitting into the recess 52P corresponding to the parking range becomes large, so that the fitting between the parking pole and the parking wheel becomes large. In addition to being able to reliably achieve the above, it is possible to prevent the occurrence of the dripping state of the parking pole due to the vibration or the like during traveling of the vehicle, and it is possible to reliably prevent the generation of the clicking sound between the parking pole and the parking wheel.

Further, by forming the detent lever 50 by press punching, the structure is not complicated at all, the manufacturing is easy like the conventional one, the cost can be reduced, and it is economical. Is advantageous to.

Furthermore, by setting the strength of the detent spring and other springs to a desired state and combining them by using the detent lever shape of the present invention, an arbitrary shift feeling can be secured in a wide range. It is possible to contribute to the improvement of usage.

The present invention is not limited to the above-mentioned embodiments, but various application modifications are possible.

For example, in the embodiment of the present invention, the distance from the rotation center of the detent lever to the recess corresponding to the parking range and the other R (reverse) and N except the parking range from the rotation center of the detent lever.
When setting the distance to the recess corresponding to each range of (neutral), D (drive), L (low drive), other than R (reverse), N (neutral), D (except the parking range) Drive), L (low drive) corresponding to each range of the recess is made low, that is, the distance is made short, and the first riding portion is formed to be higher than the second riding portion by a predetermined height. In addition, for example, the second riding portion side is formed low, but it is sufficient if the distance from the rotation center of the detent lever to the recess corresponding to the parking range and the height of the first riding portion can be set relatively large. is there.

[0047]

As described above in detail, according to the present invention, the distance from the center of rotation of the detent lever of the speed change device to the recess corresponding to the parking range corresponds to each range other than the parking range. Since it is configured to be larger than the distance to the recess, the pressing force of the detent spring at the time of fitting to the recess corresponding to the parking range is greater than the pressing force of the detent spring when fitting to the other recess L. It can also be made stronger and the shift feeling to the parking range can be improved, and to the other R (reverse), N (neutral), D (drive), L (low drive) ranges other than the parking range The shift feeling of the vehicle can also be improved, and the parking pole and the parking wheel can be securely fitted. Together may, it is possible to prevent the occurrence of dance state of the parking pawl due to vibration or the like during the vehicle running, it is capable of reliably preventing even the occurrence of a tick between the parking pole and the parking wheel. Further, since the detent lever is formed by press punching, the structure is not complicated at all, the manufacturing is easy like the conventional one, the cost can be reduced, and it is economically advantageous.

[Brief description of drawings]

FIG. 1 is an enlarged view of a detent lever of a shift operating device showing an embodiment of the present invention.

FIG. 2 is a plan view of a shift servo valve showing a conventional technique of the present invention.

FIG. 3 is a front view of a shift servo valve.

FIG. 4 is a schematic explanatory diagram of an automatic transmission.

FIG. 5 is a schematic explanatory view showing a parking pole, a parking wheel, and a return spring.

FIG. 6 is a schematic plan view of a shift servo valve.

FIG. 7 is a schematic front view of a shift servo valve.

FIG. 8 is a schematic left side view of a shift servo valve.

FIG. 9 is an enlarged view of a detent lever of the shift operating device.

[Explanation of symbols]

2 Speed change device 50 Detent lever P Parking range R Reverse range N Neutral range D Drive range L Low drive range 52P Recess corresponding to parking range 52R Recess corresponding to reverse range 52N Recess corresponding to neutral range 52D Drive range Corresponding recesses 52L Recesses corresponding to low drive range S1 Distance from center of rotation of detent lever to recess corresponding to parking range S2 Corresponding to other ranges except parking range from center of rotation of detent lever Distance to the recessed part 74 First riding part 76 Second riding part

Claims (1)

[Claims] Claim: What is claimed is: 1. A tip of a plunger movable in the contact and separation directions is engaged with a recess corresponding to each range of a detent lever connected to an operating lever connected to the select lever of the automatic transmission. In the gear shift operation device for determining the shift position, the distance from the center of rotation of the detent lever to the recess corresponding to the parking range is greater than the distance to the recess corresponding to each range other than the parking range. A gear shift operation device having a configuration.