JP2922917B2 - Control device for automatic transmission - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a structure of a control device of an automatic transmission (hereinafter referred to as A / T) used for an automobile or the like, and particularly to a parking range (hereinafter referred to as a P range). The ignition switch is ON
In this case, it relates to the structure of an A / T control device that does not allow a shift change to another range unless the foot brake is depressed.

[Problems to be solved by the prior art and the present invention]

A conventional A / T control device used for automobiles and the like is disclosed, for example, in Japanese Utility Model Laid-Open No. 60-185750.

However, according to the related art, when the shift lever is operated to shift in the locked state, the input is received by the solenoid pin of the solenoid, and the solenoid pin may be deformed and become inoperable. If the strength is increased so as not to be deformed, the size of the solenoid is increased, so that the cost may increase, the weight may increase, and the feasibility of the layout may be deteriorated.

Therefore, according to the present invention, in view of such conventional problems,
The force that blocks the movement of the position pin should be able to withstand only the force of pressing the control button, which is the control means, and the position of the shift lever can always be kept in the P range even after the ignition key is pulled out from the ignition switch. At the same time, in the other ranges, the shift lock is not performed, and the energizing time to the solenoid is shortened.

[Means for solving the problem]

In order to achieve the above object, the present invention provides a shift lever for controlling an automatic transmission which is supported on a vehicle body so as to be able to swing back and forth, and is formed so as to regulate a range position of the shift lever and is provided on the vehicle body. And a position plate provided with at least a parking range position and a plurality of other range positions behind the parking range position, wherein the shift lever is engageable with each of the range positions of the position plate. A position pin urged upward so as to be restricted to the position and control means capable of moving the position pin downward so that the position plate can be disengaged from the respective range positions; and Positive only at the position matching the position pin When the groove is formed at a position that does not match the position pin, an upper surface that prevents movement of the position pin is formed, and the peripheral surface of the shift lever is rotatable. The position of the groove of the rotary bush coincides with the position of the position pin in a state where the rotary bush supported by the rotary switch and the ignition switch is ON and the foot brake depression detection switch which is energized only when the foot brake is depressed is ON. While rotating the rotary bush so as to permit the downward movement of the position pin, when either the ignition switch or the foot brake depression detection switch is turned off, the groove of the rotary bush is set in the position. The rotary bush is used to rotate the rotary bush to a position where it does not match the pin. When the shift lever is shifted to a range position other than the parking range position, the rotating bush comes into contact with the shift lock release holding portion provided on the side surface of the position plate from the side surface. Accordingly, even if either the ignition switch or the foot brake depression detection switch is turned off, the state where the position of the groove matches the position of the position pin is maintained against the turning force, while the shift is performed. When the lever is shifted to the parking range position, the turning force causes the groove to enter the through hole formed in front of the shift lock release holding portion on the side surface of the position plate, so that the position of the groove is adjusted to the position of the position pin. Parking lock lever rotated to a position that does not match the position The in which was characterized by being projected from the rotary shaft sleeve.

(Operation)

 Next, the operation of this configuration will be described.

When the rotation of the shift lever is controlled to a position at which the position pin engages with the P range, the parking lock lever can enter the through hole of the position plate, in other words, the shift lock release holding portion is eliminated, so that the solenoid The solenoid pin pushes the rotating bush by the spring housed inside, the rotating bush is rotated accordingly, the parking lock lever enters the through hole, the rotating bush is rotated, and the position of the groove is set to the position of the position pin. Will be shifted. For this reason, even if the control means is operated, the position pin interferes with the upper surface of the rotary bush and does not lower any more, so that the position pin does not fall out of the P range.

Next, turn on the ignition switch in this state,
In addition, when the foot brake is depressed, the solenoid is turned on, and the solenoid pin of the solenoid pulls the rotary bush and rotates, and the position of the concave groove of the rotary bush becomes the same as the position of the position pin. Move the position pin out of the P range of the position plate and move the shift lever to the drive range (D
It can be moved to another range such as a range. The solenoid is turned off after a certain period of time, so that no load is applied to the solenoid. Therefore, depress the foot brake to activate the solenoid.
If a certain period of time passes after the shift lever is turned on without moving the shift lever from the P range, the solenoid will be turned off again, and the solenoid will not be turned on unless the foot brake is depressed again.

Further, after the rotation of the shift lever is controlled to a range position other than the P range, and when the solenoid is in the OFF state, the parking lock lever having a biasing force stronger than the force of the spring in the solenoid is provided to the shift lock release holding portion. Due to the pressure contact, the position of the concave groove of the rotary bush matches the position of the position pin.

〔Example〕

Hereinafter, the configuration of an embodiment of the present invention will be described with reference to the drawings.

1 to 7 show an embodiment of the present invention.
Reference numeral 1 denotes a plate fixed to a vehicle body 2 such as a floor panel.
A / T supported swingably around shaft 2a supported by 40
3 is a shift lever for controlling the shift lever 1.
The position plate is formed so as to regulate the shift position including the P range P, and is erected on the plate 40.

The position plate 3 is formed in an L-shaped cross section,
A substantially horizontal plane is disposed on the plate 40, and an engagement port 5 is formed in the rising surface 4 which stands upright. The engagement port 5 has the P range P, the reverse range R, the neutral range N, and the D range. D, second speed range S, and first speed range F are formed with grooves P, R, N, D, S, F.

The shift lever 1 has the position plate 3
A position pin 7 urged upward by a return spring 6 so as to be engageable with the above-mentioned respective ranges P, R, N, D, S, and F and regulated at the position; A hollow lever body 9 having an elongated hole 8 formed so as to be movable, a rod 10 supported vertically movable within the lever body 9 and supporting the position pin 7 at a lower end thereof; Knob 11 supported on the upper end of the
So that the taper portion 12 at the upper end of the rod 10 comes into contact with the rod so that the taper portion 12 at the upper end of the rod 10 comes into contact with the rod 10 so that the position pin 7 is disengaged from the range of the position plate 3 via the rod 10. A control button 13 as a control means for moving the position pin 7 downward;
A concave groove 14a is formed to allow the position pin 7 to move up and down only at a position that matches the position pin 7, and an upper surface 14b is formed to prevent movement of the position pin 7 at a position that does not match the position pin 7. A rotary bush 14 rotatably supported on the peripheral surface of the lever body 9 of the shift lever 1 and a stop switch as a foot brake depression detection switch that is energized only when the ignition switch 22 is ON and the foot brake is depressed. When the 20 turns ON, the rotating bush 14
And a solenoid 15 having a solenoid pin 15a connected to the rotary bush 14 so that the rotary bush 14 can rotate so that the concave groove 14a matches the position pin 7.

The rotating bush 14 has a parking lock lever 18
The solenoid 15 is turned off when either the ignition switch 22 or the stop switch 20 of the foot brake is off and the shift lever 1 is shifted to the P range P.
Therefore, the parking lock lever 18 is pushed by the spring force of the spring housed inside the solenoid 15 and the parking lock lever 18 is inserted into the through hole 16 of the position plate 3 as shown by a solid line in FIG. The groove 14
The rotation is performed so that the position a does not match the position of the position pin 7. Further, as shown in FIG. 3, when the shift lever 1 is shifted to a range other than the P range P (for example, the N range), the rider rides on the shift lock release holding portion 17 provided on the position plate 3, so that the parking The position of the concave groove 14a is moved by the lock lever 18 to the position pin 7.
The rotary bush 14 is rotated by a force stronger than the spring force of the spring housed inside the solenoid 15 so as to match the position of the rotary bush 14.

The parking lock lever 18 may be formed in a tongue shape as shown in FIG. 6, or a split groove 18a is formed in the tongue portion as shown in FIG. Then, soft touch may be performed.

The shift lock release holding portion 17 may be formed by an emboss 17a having the position plate 3 protruding toward the shift lever 1 as shown in FIGS. 1 to 3, or as shown in FIGS. 9 to 11. As shown, a spacer 17b made of a leaf spring material may be supported on the position plate 3 by a screw 17c. If the embossing 17a is used, the number of parts is small, so that it can be inexpensive.However, when the protrusion amount varies, the screwing position of the screw 17c is set to a long hole, and the position of the spacer 17b is adjusted according to the part. It is possible.

Reference numeral 30 denotes a manual release device. When the lever 31 is pressed when the solenoid 15 has failed, the concave groove 14a of the rotary bush 14 resists the spring force of the spring of the solenoid pin 15a of the solenoid 15.
Can be matched with the position of the position pin 7. Reference numeral 35 shown in FIG. 5 denotes a spring in the knob 11 for urging the tapered portion 12 of the rod 10 in a direction in which the control button 13 projects, between the tapered portion 12 and the spring 35. Has a concave groove 12a of the tapered portion 12.
And a push member 36 which engages with the push member.

FIG. 7 is a circuit diagram. When the foot brake is depressed, a stop switch 20 is turned on, and a stop lamp 21 provided downstream of the stop switch 20 is turned on.
The relays 23 and 2 are located downstream of the ignition switch 22.
4 and a parking range sensor 25 are provided.
When the shift lever 1 is turned to the P range P as shown in FIG. 1, the parking range sensor 25 interferes with the block 26 fixed to the position plate 3 and the shift lever 1 is turned to the P range P. Turns on when it detects that it has been done.

With such a configuration, when the car or the like is stopped,
When the rotation of the shift lever 1 is controlled to a position where the position pin 7 is engaged with the P range P, the solenoid
When the parking lock lever 18 pushed by the solenoid pin 15a protruding by the spring force inside the solenoid 15 enters the through hole 16, the rotary bush 14 is rotated, and the groove 14a is turned off. Is shifted from the position of the position pin 7. For this reason, even if the control button 13 as the control means is operated, the position pin 7 interferes with the upper surface 14b of the rotary bush 14, so that it does not lower any more and does not fall out of the P range P.

Next, when the shift lever 1 is in this position, the ignition switch 22 is turned on to start the vehicle, and the stop switch 20 is turned on by depressing the foot brake, the solenoid 15 is turned on, and the solenoid pin of the solenoid 15 is turned on. 15a pulls the rotary bush 14 against the spring force of the spring housed inside the solenoid 15. Since the rotating bush 14 rotates and the position of the groove 14a of the rotating bush 14 becomes the same as the position of the position pin 7, when the control button 13 as the control means is operated, the position pin 7 is
Since it falls into a and falls out of the P range P of the position plate 3, the shift lever 1 can be moved to another range R, N, S, F such as the D range D. However, after a certain period of time, the solenoid 15
The state becomes F, and no load is applied to the solenoid 15. Therefore,
After turning on the ignition switch 22 and depressing the foot brake to turn on the solenoid 15, after a certain period of time without moving the shift lever 1 from the P range P, the solenoid 15 is turned off again and the foot brake is turned off. If it is not depressed again, the solenoid 15 will not be turned ON.

After the control as described above, the shift lever 1
After the rotation of the solenoid 15 to the range R, N, D, S, F positions other than the P range P, even if the solenoid 15 is turned off,
The parking lock lever 18 is the shift lock release holding part 17
, The position of the concave groove 14a of the rotary bush 14 and the position of the position pin 7 are maintained at the same position, thereby mechanically maintaining the shift lock OFF state.

Further, when the position pin 7 of the shift lever 1 is in the R range R and the first speed range F of the position plate 3, the position pin 7 always falls into the concave groove 14a of the rotary bush 14, so that the shift is automatically performed. The lock is kept off.

(Effect)

As described above, according to the present invention, a shift lever for controlling an automatic transmission supported on the vehicle body so as to be able to swing back and forth, and formed to regulate the range position of the shift lever, and In a control device for an automatic transmission, comprising a position plate provided upright and having at least a parking range position and a plurality of other range positions behind the parking range position, the shift lever is connected to each of the range positions of the position plate. A position pin urged upward so as to be able to be engaged and regulated at the position, and control means capable of moving the position pin downward so that the position plate can be disengaged from each of the range positions. At the position that matches the position pin When a groove is formed to allow the position pin to move up and down, and when the groove is located at a position that does not match the position pin, an upper surface is formed to prevent the movement of the position pin, and the peripheral surface of the shift lever is rotatable. The rotating bush supported as described above and the foot brake depression detection switch that is energized only when the ignition switch is ON and the foot brake is depressed
In the ON state, the rotary bush is rotated so that the position of the concave groove of the rotary bush coincides with the position of the position pin to allow the position pin to move downward, while the ignition switch or the foot brake is turned on. When any of the depression detection switches is turned off, a solenoid for urging the rotary bush to actuate a rotating force to rotate the concave groove of the rotary bush to a position not matching the position pin is provided, and When the shift lever is shifted to a range position other than the parking range position, the rotary bush comes into contact with a shift lock release holding portion provided on a side surface of the position plate from the side surface to detect the ignition switch or foot brake depression. Even if one of the switches is turned off, When the shift lever is shifted to the parking range position while maintaining the state where the position of the groove matches the position of the position pin, the shift lock release holding on the side surface of the position plate is performed by the turning force. A parking lock lever protruding from the rotary bush, wherein the parking lock lever is turned into a position where the position of the concave groove does not match the position of the position pin by entering into a through hole formed in front of the portion. This means that the force that blocks the movement of the position pin only needs to be opposed to the force that presses the control button, and the parking lock can always be maintained even after the ignition key is removed from the ignition switch. Shift lock OFF at solenoid positions other than P range Since the state is maintained, there is a practical effect that the energizing time to the solenoid can be shortened.

[Brief description of the drawings]

1 to 7 show an embodiment of the present invention.
FIG. 2 is a front view, FIGS. 2 and 3 are top views according to arrows II and III in FIG. 1, FIG. 4 is an overall schematic view of FIG. 1, and FIG. 6 is a schematic perspective view of the rotary bush 14, FIG. 7 is a circuit diagram, FIG. 8 is a schematic perspective view of another embodiment of the rotary bush 14, and FIGS. 9 is a front view, FIG. 10 is a top view showing the state related to the arrow X in FIG. 9, and showing a state in which the shift lever 1 is controlled to rotate, FIG. FIG. 10 is a sectional view taken along line XI-XI in FIG. DESCRIPTION OF SYMBOLS 1 ... Shift lever, 2 ... Body, 3 ... Position plate, 7 ... Position pin, 13 ... Control button as control means, 14 ... Rotating bush, 14a ... Recessed groove of rotary bush, 14b ... Top of rotating bush, 15 ...
Solenoid 15a Solenoid pin 17 Shift lock release holding part 18 Parking lock lever P, N,
R, D, S, F ... Each range position on the position plate 3.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Motohiro Saito 2028 Washizu, Kosai-shi, Shizuoka Fuji Kiko Co., Ltd. Washizu Plant (72) Inventor Hiroshi Yamazaki 1-14-7 Maruyama, Isogo-ku, Yokohama-shi, Kanagawa Prefecture Co., Ltd. Oi Works (56) References JP-A-2-60840 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) B60K 20/00-20/08 F16H 59/00-59 / 12

Claims (1)

(57) [Claims] 1. A shift lever for controlling an automatic transmission supported on a vehicle body to be able to swing back and forth,
A control device for an automatic transmission, comprising: a position plate formed so as to regulate a range position of the shift lever and erected on the vehicle body and provided with at least a parking range position and a plurality of other range positions behind the parking range position. The shift lever has a position pin that can be engaged with each of the range positions of the position plate and is urged upward so as to be restricted to the position, and engages with the position plate from each of the range positions. A control means for moving the position pin downward so as to be releasable, and a concave groove capable of moving the position pin up and down only at a position matching the position pin, and a position not matching the position pin. Move the position pin when there is a groove The rotation bush, which has an upper surface formed to prevent rotation and is rotatably supported on the peripheral surface of the shift lever, and the ON position of the foot brake depression detection switch, which is energized only when the ignition switch is ON and the foot brake is depressed In this state, the rotary bush is rotated so that the position of the concave groove of the rotary bush coincides with the position of the position pin and the downward movement of the position pin is permitted, while the ignition switch or foot brake depression detection is performed. When any of the switches is turned off, the rotary bush comprises a solenoid that urges the rotary bush to rotate the rotary bush so that the concave groove of the rotary bush does not match the position pin. Shift the shift lever to a range position other than the parking range position. When the ignition switch or the foot brake depression detection switch is turned off by contacting the shift lock release holding portion provided on the side surface of the position plate from the side when the power switch is turned off, When the shift lever is shifted to the parking range position while the position of the concave groove matches the position of the position pin, the rotation force causes the shift lock release holding portion on the side surface of the position plate to move. An automatic transmission, wherein a parking lock lever, which is turned into a position where the position of the concave groove does not match the position of the position pin by entering into a through hole formed in the front, projects from the rotary bush. Control device.