JPH02261970A - Control device of automatic transmission - Google Patents

Abstract

PURPOSE:To keep the condition as locked to parking always even after drawing- off of an ignition key by protruding a parking lock lever from a rotary bushing so that the position of a groove will be identical to the position of a position pin when a shift lever is shifted to a range other than the parking. CONSTITUTION:If a shift lever 1 is put under rotational control to be located where a positioning pin 7 is detained with P-range P while the condition is such that a car, etc., is at a standstill, a solenoid 15 is being turned off, and a parking lock lever 18 pushed by a solenoid pin 15a protruding with the force of a spring in the solenoid 15 intrudes into a through hole 16, and thereby a rotary bushing 14 is rotated to cause a groove 14a to be dislocated from the position of the positioning pin 7. Therefore, this pin 7 interferes with the oversurface the 14b of the rotary bushing 14 even through a control button as a controlling means is operated, and does not sink furthermore, and there is no fear of slipping off from the P-range P.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to the structure of a control device for an automatic transmission (hereinafter referred to as A/T) used in automobiles, etc., and particularly relates to a control device for a parking range (hereinafter referred to as P range). ), the ignition switch is turned to O.
This relates to the structure of an A/T control device that makes it impossible to shift to another range unless the foot brake is depressed when the N position is N.

[Prior Art and Problems to be Solved by the Present Invention] As a conventional A/T control device used for automobiles, etc., there is, for example, one shown in Japanese Utility Model Application Publication No. 60-185750.

However, according to such prior art, when the shift lever is operated in an attempt to shift in the locked state, the input is received by the solenoid bin of the solenoid, so there is a risk that the solenoid bin may become deformed and become inoperable. In addition, increasing the strength to prevent deformation would result in a larger solenoid, resulting in higher costs, increased weight, and poor layout feasibility (
There is a possibility that this will happen.

According to the present invention, in view of such conventional problems, the force for preventing the movement of the position pin only needs to be resisted against the force for pressing the control button, which is the control means, and the ignition key The purpose is to always keep the shift lever in the P range even after the switch is pulled out, and to prevent the shift from locking in other ranges, thereby shortening the time during which the solenoid is energized.

[Means to solve the problem]

In order to achieve such an object, the present invention includes a shift lever for controlling an automatic transmission that is swingably supported on a vehicle body, and a shift lever that is formed so as to regulate the range position of the shift lever and that is erected on the vehicle body. In the control device for an automatic transmission, the shift lever includes a position bin that can be engaged with each range position of the position plate and is biased upward so as to be restricted to the range position. A control means for moving the position pin downward so that it can be disengaged from the position plate, and a concave groove that allows the position pin to move up and down only at a position that matches the position pin are formed. a rotary bush which is formed with an upper surface that prevents movement of the position pin when there is a groove in a position that does not match the position pin, and which is supported so as to be rotatable around the shift lever;
A solenoid is connected to the rotary bush so that the rotary bush can be rotated so that the concave groove of the rotary bush matches the position pin when the ignition switch is turned on and the foot brake is depressed. A solenoid is connected to the rotary bush, and either the ignition switch or the stop switch of the foot brake is turned OFF.
Moreover, when the shift lever is shifted to the parking range, the solenoid is pushed by the spring force of the spring stored inside the solenoid and enters the through hole of the position plate, so that the position of the groove changes to the position of the position pin. When the shift lever is shifted to a range other than the parking range, the position of the concave groove is aligned with the position of the position pin by the shift lock release holding part provided in the position play 1. The parking lock lever is characterized by protruding from the rotating bush so that the parking lock lever can be rotated with a force stronger than the spring force of the spring housed inside the solenoid.

[For production]

In this configuration, the operation will be explained next.

When the shift lever is controlled to rotate to a position where the position pin engages with the P range, the parking lock lever can enter into the through hole of the position plate, in other words, the shift lock release holding part is eliminated, so that A spring housed inside the solenoid causes the solenoid pin to push the rotary bushing, and the rotary bushing is accordingly rotated, the parking lock lever enters the through hole, the rotary bushing is rotated, and the rotary bushing is rotated to position 1 of the groove.
will be shifted from the position of the position bin. 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 fall any further, and does not fall out of the P range.

Next, turn on the ignition switch in this state,
Moreover, when you step on the foot brake, the solenoid turns on.
The solenoid pin of the solenoid pulls the rotary bushing, so it rotates, and the position of the concave groove of the rotary bushing is the same as the position of the position pin, so operate the control means to move the position pin from the P range of the position plate. This allows the shift lever to be moved to a drive range (hereinafter referred to as D range) or other range. The solenoid is turned off after a certain period of time, and no load is placed on the solenoid. Therefore, if a certain period of time passes without moving the shift lever from P range after stepping on the fund brake and turning on the solenoid, the solenoid will turn off again.
The solenoid will not turn on unless you step on the fund brake again.

Further, after the shift lever has been rotationally controlled to a range position other than the P range and the solenoid is in the OFF state, the parking lock lever, which has a biasing force stronger than the spring force in the solenoid, is activated by the shift lock release holding section. Since the rotary bushing is in pressure contact with the rotary bushing, the position of the concave groove matches the position of the position pin.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of an embodiment of the present invention will be described below with reference to the drawings.

1 to 7 are diagrams showing one embodiment of the present invention, in which reference numeral 1 indicates a plate 4 fixed to a vehicle body 2 such as a floor panel.
A that is swingably supported around a shaft 2a that is supported by
/T control shift lever, and reference numeral 3 designates a position plate that is formed to regulate the shift position of the shift lever 1, including the P range P, and is erected on the plate 40.

The position plate 3 is formed in a cross-sectional shape, and a substantially horizontal surface is disposed on the plate 40, and an engagement opening 5 is formed in the upstanding surface 4. , a reverse range R, a neutral range N, the D range D, a second speed range S, and a first speed range F, grooves P, R, N, D, S, and F are formed.

The shift lever 1 is provided with a return spring 6 so as to be able to engage with each range P, R, N, D, S, F position of the position plate 3 and to be restricted to the position.
A position pin 7 is urged upward by a lever body 9, a hollow lever body 9 has a long hole 8 formed therein so that the position pin 7 can be moved up and down, and a lever body 9 is supported within the lever body 9 so as to be able to move up and down. A rod 10 supports the position pin 7 at its lower end, and a tapered portion 12 at the upper end of the rod 10 is located within a knob 11 supported at the upper end of the lever main body 9 and is movable in a substantially horizontal direction. in contact with the rod 1
0, a control button 13 serving as a control means for moving the position pin 7 downward so as to disengage the position pin 7 from each range of the position plate 3, and a position corresponding to the position pin 7; A concave groove 14a is formed that allows the position pin 7 to move up and down only in the position, and an upper surface 14b is formed that prevents the position pin 7 from moving at a position that does not match the position pin 7.
A rotating bush 1 rotatably supported on the circumferential surface of
4) When the ignition switch 22 is ON and the foot brake is depressed, the power is turned on and the rotary bush 14 is rotated once so that the concave groove 14a of the rotary bush 14 is aligned with the position pin 7. A solenoid bottle 15a is attached to the rotating bush 14 so as to be movable.
The solenoid 15 is connected to the solenoid 15.

The rotary bush 14 includes a parking lock lever 1.
8 protrudes from the rotating bush 14, and when either the ignition switch 22 or the fund brake stop switch 20 is OFF and the shift lever 1 is shifted to the P range P, the solenoid 15 is OFF and the power is does not work, solenoid 1
5, the parking lock lever 18 enters the through hole 16 of the position plate 1/3 as shown by the solid line in FIG. The position of the groove 14a is the position bin 7.
Rotate so that it does not match the position of 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), it rides on the shift lock release holding part 17 provided on the position plate 3, so that the parking The rotary bush 14 is rotated by the lock lever 18 with a force stronger than the spring force of the spring housed inside the solenoid 15 so that the position of the groove 14a matches the position of the position pin 7.

The barking lock lever 18 may be formed into a tongue shape as shown in FIG. 6, or may be elastically deformable by forming a groove 18a in the tongue portion as shown in FIG. Soft touch may be possible in this way.

The shift lock release holding portion 17 may be formed by an embossment 17a that projects the position plate 3 toward the shift lever 1, as shown in FIGS. 1 to 3, or
As shown in FIGS. 9 to 11, a spacer 17b made of a temporary spring material may be supported on the position plate 3 by a screw 17C. The embossed part 17a can be made at a low cost because it has fewer parts, but if the amount of protrusion varies, the screw 17C is screwed into a long hole, and the spacer 17b is adjusted to match the part. Is possible.

Reference numeral 30 denotes a manual release device, and when the lever 31 is pushed when the solenoid 15 is out of order, the rotating bush 1 is released against the spring force of the spring of the solenoid pin 15a of the solenoid 15.
The position of the groove 14a of No. 4 can be made to match the position of the position pin 7. Further, reference numeral 35 shown in FIG. 5 is a spring that is located inside the knob 11 and biases the tapered portion 12 of the rod 10 in the direction in which the control button 13 protrudes. In between, there is a bushing member 36 that engages with the groove 12a of the tapered part 2.

Figure 7 is a circuit diagram, and when the foot brake is depressed,
The stop switch 20 is turned on, and the stop lamp 21 provided downstream of the stop switch 20 lights up. Furthermore, relays 23 and 24 and a parking range sensor 25 are provided downstream of the ignition switch 22. 8H parking range sensor 25 is
As shown in FIG. 1, when the shift lever 1 is rotated to the P range P, the block 26 fixed to the position plate 3
When it detects that the shift lever 1 has been rotated to the P range P, it is turned ON.

With this configuration, when the shift lever 1 is rotationally controlled to a position where the position pin 7 engages the P range P while the automobile or the like is stopped, the solenoid 1
5 is OFF, the parking lock lever 18 pushed by the solenoid pin 15a protruding by the spring force of the spring in the solenoid 15 enters the through hole 16, and the rotary bush 14 is rotated. hand,
The position of the groove 14a is shifted from the position of the position pin 7. For this reason, the control button 1, which is the control means,
Even if 3 is operated, the position pin 7 interferes with the upper surface 14b of the rotary bush 14 and does not go down any further, and the P range P
It never comes off.

Next, when the shift lever 1 is in this position and the ignition switch 22 is turned on to start the vehicle, and the foot brake is depressed and the stop switch 20 is turned on, the solenoid 15 is turned on.
No. 5 solenoid pin 15a pulls rotary bush 14 against the spring force of a spring housed inside solenoid 15.

The rotary bushing 14 rotates, and the concave groove 1 of the rotary bushing 14 rotates.
Since the position of 4a is opposite to the position of the position bin 7, when the control button 13, which is the control means, is operated,
The position bin 7 enters the groove 14a and lowers,
Since the position plate 3 is out of the P range P, move the shift lever 1 to the D range D, etc. ranges R, N, and S.

It becomes possible to move to F. However, the solenoid 15 is turned off after a certain period of time, and no load is placed on the solenoid 15. Therefore, after turning on the ignition switch 22 and stepping on the fund brake to turn on the solenoid 15, the shift lever
If a certain period of time passes without moving the solenoid 1 from the P range P, the solenoid 15 will turn off again, and unless the foot brake is depressed again, the solenoid 15 will turn on.
It will not become.

Further, after performing the control as described above, shift lever 1 is moved to ranges R, N, D, and S other than P range P.

After the rotation is controlled to the F position, even if the solenoid 15 is turned off, the parking lock lever 18 is in pressure contact with the shift lock release holding part 17, so the position of the concave groove 14a of the rotary bushing 14 remains unchanged. By maintaining the same position as the position pin 7, the shift lock is mechanically maintained in the OFF state.

Also, when the position pin 7 of the shift lever 1 is in the R range R and 1st speed range F of the position plate 3, the position pin 7 is always depressed into the groove 14a of the rotary bush 14, so the shift is automatically performed. Lock OFF
kept in condition.

〔effect〕

As described above, according to the present invention, there is provided a shift lever for controlling an automatic transmission that is swingably supported on a vehicle body, and a shift lever that is formed so as to regulate the range position of the shift lever and that is mounted vertically on the vehicle body. In an automatic transmission control device comprising a position plate, the shift lever includes a position pin that can engage each range position of the position plate and is biased upward so as to be restricted to the position. , a control means for moving the position pin downward so that it can be disengaged from the position plate, and a groove that allows the position pin to move up and down only at a position that matches the position pin, and a groove is formed. a rotary bushing formed with an upper surface that prevents movement of the position pin when there is a groove in a position that does not match the position pin, and rotatably supported on the circumferential surface of the shift lever;
A solenoid is connected to the rotary bush so that the rotary bush can be rotated so that the concave groove of the rotary bush matches the position pin when the ignition switch is turned on and the foot brake is depressed. A solenoid is connected to the rotary bush, and either the ignition switch or the stop switch of the foot brake is turned OFF.
Moreover, when the shift lever is shifted to the parking range, the solenoid is pushed by the spring force of the spring stored inside the solenoid and enters the through hole of the position plate, so that the position of the groove changes to the position of the position pin. When the shift lever is shifted to a range other than the parking range, the position of the concave groove is aligned with the position of the position pin by the shift lock release holding part provided on the position plate. The parking lock lever is characterized by protruding from the rotating bush so that the parking lock lever is rotated with a force stronger than the spring force of the spring housed inside the solenoid, so that the force that prevents the movement of the position pin is reduced. You only have to resist the force of pressing the control button, and you can always keep the parking lock state even after you remove the ignition key from the ignition switch, and in range positions other than P range, the shift lock will stay locked even if the solenoid is OFF. Since the OF-F state is maintained, this has the practical effect of shortening the time during which the solenoid is energized.

[Brief explanation of drawings]

51 to 7 are diagrams showing one embodiment of the present invention, and the first
The figure is a front view, Figures 2 and 3 are top views in the direction of arrows ■ and ■ in Figure 1, Figure 4 is a general schematic diagram of Figure 1, and Figure 5 is V-V in Figure 4. 6 is a schematic perspective view of the rotary bushing 14, FIG. 7 is a circuit diagram, and FIG. 8 is a schematic diagram of the rotary bushing 14.
9 to 1 are diagrams showing other embodiments of the present invention, and FIG. 9 is a front view, and FIG.
0 is a top view related to arrow X in FIG. 9 and shows a state in which the shift lever 1 is rotationally controlled, and 11 is a top view showing Xl in FIG. 9.
-XI line sectional view. 1...Shift lever-12...Vehicle body, 3
...Position plate, 7...Position bin, 13...Control button as control means, 14...Rotary bush, 14a...
...A dent in the rotating bush? L14b...Top surface of rotating bush, 15...Solenoid, 15a
... Solenoid pin, 17 ... Shift lock release holding part, 18 ... Parking lock lever 1P, N, R.

Claims (1)

[Scope of Claims] A shift lever for controlling an automatic transmission that is swingably supported on a vehicle body, and a position plate that is formed to regulate the range position of the shift lever and is erected on the vehicle body. In the control device for an automatic transmission, the shift lever includes a position pin that is biased upward so as to be able to engage with each range position of the position plate and to be regulated to the position, and a position pin that is biased upward so as to be regulated in the range position of the position plate. A control means for moving the position pin downward so that the engagement can be released, and a concave groove that allows the position pin to move up and down only in a position that matches the position pin, and does not match the position pin. a rotating bush formed with an upper surface that prevents movement of the position pin when there is a groove in the position, and rotatably supported on the circumferential surface of the shift lever;
A solenoid is attached to the rotary bush so that the rotary bush can be rotated so that the concave groove of the rotary bush matches the position pin when the ignition switch is turned on and the foot brake is depressed. It consists of a solenoid connected to a pin, and the rotary bush has a solenoid connected to the rotary bush when either the ignition switch or the stop switch of the foot brake is turned OFF.
Moreover, when the shift lever is shifted to the parking range, the solenoid is pushed by the spring force of the spring stored inside the solenoid and enters the through hole of the position plate, so that the position of the groove changes to the position of the position pin. When the shift lever is shifted to a range other than the parking range, the position of the concave groove is aligned with the position of the position pin by the shift lock release holding part provided on the position plate. A control device for an automatic transmission, characterized in that a parking lock lever protrudes from the rotating bush so that the parking lock lever is rotated with a force stronger than the spring force of a spring housed inside the solenoid.