JPH0258134B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a control device for an automatic transmission.

(Prior art) As a conventional automatic transmission control device,
For example, the one described in Japanese Utility Model Publication No. 62-6900 is known.

This conventional control device was provided with a shift lever with a protruding shift pin, and a position plate with an engagement groove that engaged with the shift pin to restrict operation of the shift lever. . Further, the engagement groove 01 has a fifth
As shown in the figure, parking lock groove 03 engages with shift pin 02 in parking range 0P and restricts shift operation toward reverse range 0R.
A non-restriction portion 04 in which movement of the shift pin 02 is not restricted is formed adjacent to the non-restriction portion 04. In addition, 05
is a reverse lock groove that engages with the shift pin 02 in the reverse range OR and restricts the shift operation toward the parking range 0P. Further, the shift lever was provided with an inhibitor switch that allowed the engine to start in the parking range and neutral range, but did not allow starting in the non-restricted range and other ranges, corresponding to the position of the shift lever.

(Problems to be Solved by the Invention) By the way, in the case of the conventional device as described above, the engine starting range 0e by the inhibitor switch is as shown in FIG. 5 if the center position of the shift pin 02 is The parking range whose movement is restricted by the parking lock groove 03 (this is called the regular parking range) is limited only when it is 0P, and the allowable setting range that can be set as the engine starting range 0e also matches this. Ta.

That is, if the engine starting range 0e becomes narrower than the range shown in the diagram, the engine may not start even though the parking range is shifted to 0P, so this must be avoided, and conversely, the engine starting range 0e becomes narrower than the range shown in the diagram. If it becomes wider than the range, the engine will be able to start when it is not shifted to the parking range 0P, for example, when the shift pin 02 is positioned at position Oa in the figure, so this must also be avoided. Therefore, the engine starting range 0e must be set within a range where this problem will not occur, and the allowable setting range is extremely narrow and must almost match the engine starting range 0e shown in the diagram. Ta.

Therefore, there is a problem in that the work of adjusting the mounting position of the inhibitor switch and the like and adjusting the engine starting range is troublesome.

(Means for Solving the Problems) An object of the present invention is to provide a position plate that can solve the above-mentioned problems and facilitate the installation of an inhibitor switch and the adjustment of the engine starting range. In order to achieve this object, the present invention includes a shift lever that is swingably provided on the vehicle body, and a shift pin that projects from the shift lever and engages with the shift pin. A position plate is provided in which an engagement groove for regulating the operation of the shift lever is formed, and the shift pin is formed to be movable and disengaged from the engagement groove by operating a button provided on the shift lever. The engagement groove includes a parking lock groove that engages with a shift pin in the parking range to restrict shifting operations toward the next range, and a non-restricting portion that is formed adjacent to the parking lock groove and does not restrict shifting operations. and an inhibitor switch that corresponds to the position of the shift lever and allows the engine to start in the parking range, but does not allow the engine to start when the shift pin is located in the non-restricted position or in a predetermined range. In a control device for an automatic transmission, the parking lock groove includes a main lock wall that engages with a shift pin of a parking range, and a main lock wall that is formed closer to the non-restricting portion than the main lock wall, and that is configured to perform a shift operation in the direction of an adjacent range. A sub-lock wall is formed that is capable of regulating the engine starting range of the inhibitor switch, and the allowable setting range that can be set as the engine starting range of the inhibitor switch is a range in which the shift operation is regulated by the main lock wall. The means is characterized in that it is provided between the ranges.

(Function) In the automatic transmission control device of the present invention,
By forming a sub-lock wall in addition to the main lock wall in the parking lock groove, shift change is regulated in the (regular) parking range where movement is restricted by the main lock wall, and furthermore, movement from the (regular) parking range is restricted. Even if the shift pin is moved slightly toward the adjacent range, the shift pin engages with the sub-lock wall and the shift change is restricted.

Further, means is provided in which a setting allowable range that can be set as the engine starting range of the inhibitor switch is provided between a range in which shift operation is restricted by the main lock wall and a range in which shift operation is restricted by the auxiliary lock wall. Therefore, if the boundary of the engine starting range falls within this set permissible range, the engine will always be started in the parking range, and the engine will not start if the shift pin is located in the non-restricted area.

That is, in the present invention, whether or not a shift operation that does not involve disengaging the shift pin is possible or not, and whether or not the engine can be started are shown below.

When the shift lever is in the (regular) parking range where shifting is restricted by the main lock wall, shifting cannot be performed but the engine can be started.

When the shift lever is in a position where the shift operation is restricted by the sub-lock wall, the shift operation cannot be performed, and engine starting may or may not be possible depending on setting errors and the like.

When the shift lever is in a position where the shift pin is located in the non-restricted area, the shift operation can be performed, but the engine cannot be started.

Therefore, in the present invention, when adjusting the engine starting range so that the engine can be started with no shift operation in the (regular) parking range, and the engine can be started with no shift operation in the non-regulated area, the shift operation must be performed with the main lock wall. A setting tolerance range is established between the range in which shifting is restricted by the sub-lock wall and the range in which shifting is restricted by the sub-lock wall, and errors within this setting tolerance range can be tolerated. This makes it easier to adjust the range.

(Example) Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

First, the configuration of the embodiment will be explained.

FIG. 2 shows a control device for an automatic transmission according to an embodiment. As shown in the figure, a shift lever 10, a position plate 20, a solenoid 3
0, the main configuration is a solenoid control circuit 40.

The shift lever 10 is used to operate an automatic transmission (not shown), and is supported by the vehicle body 100 so as to be able to swing around a support shaft 11. Each range has 1st speed.

Further, this shift lever 10 is provided with a shift pin 12 projecting from a position slightly above the support shaft 11, and this shift pin 12 is connected to a control button 1 provided at the upper end of the shift lever 10.
By pressing 3, the control button 1 can be slid downward via an interlocking mechanism (not shown).
It is connected to 3.

Further, a position plate 20 is provided on the vehicle body 100 near the position of the support shaft 11 of the shift lever 10.

That is, this position plate 20 is formed with an engagement groove 21 in which the shift pin 12 can be engaged, and the shift lever 1 in the parking range P is
0 shift operation, shift operation to the parking range P side in reverse range R, shift operation to the reverse range R side in neutral range N, shift operation to the 2nd gear range side in drive range D, 2nd gear Shifting to the 1st speed range side in the range is restricted in the engaged state. This shift change restriction can be canceled by moving the shift pin 12 downward by operating the control button 13.

The parking lock groove 22 shown in FIG. 1 restricts the shift operation in the parking range P, and the reverse lock groove 23 restricts the shift operation toward the parking range P in the reverse range R. A non-restricting portion 24 is formed between both grooves 22 and 23, which does not restrict the shift operation.

The parking lock groove 22 has a main lock wall 221 that engages with the shift pin (A, B position) 12 of the parking range P, and a main lock wall 221 that is formed on the side of the reverse range R relative to the main lock wall 221, and that is formed in the direction of the reverse range R. A sub-lock wall 222 is formed that can regulate the shift operation. In this embodiment, the secondary lock wall 222 is located at a distance corresponding to the radius of the shift pin 12 in the reverse range R direction from the main lock wall 221.

The position of the shift lever 10 when restricted by the main lock wall 221 will be referred to as the regular parking range from now on.
The parking range is called TP, and the position where it is restricted by the sub-lock wall 222 is called the temporary parking range EP. The reason why the shift lever 10 is arranged in this temporary parking range EP and in the position where the shift pin 12 touches the non-regulating part 24 as shown in the figure is because the control button 13 is not operated before the shift lever 10 reaches the regular parking range TP. Release and shift pin 12
This is a case where, when the shift lever 10 moves upward, the operation of the shift lever 10 is stopped midway due to the upward urging force and sliding resistance on the shift pin 12. Furthermore, in this embodiment, in order to prevent the shift lever 10 from being disposed in such a position, the shift pin 12 is configured with a main shaft 121 and a collar 122 that is rotatable with respect to the main shaft 121, thereby reducing sliding resistance. is kept low.

Further, reference numeral 50 shown in FIG. 3 is an inhibitor switch, which is arranged in parallel to the position plate 20. The inhibitor switch 50 includes a contact switch 51 that slides together with the shift lever 10, and is energized when connected to a contact on a terminal base 52. That is, neutral range N and parking range P
to enable the engine to start and switch to reverse range R.
It is designed to turn on a reverse lamp (not shown).

When the engine starting range e is shown in correspondence with the center position of the shift pin 12, it is as shown in FIG. The range is the starting range n plus the reverse side setting allowable range a and the overstroke side setting allowable range b.

The engine starting range e is set based on the reverse side reference position c and the overstroke side reference position d, which are the center positions of both setting allowable ranges a and b.
1/2 of both setting tolerance ranges a and b is given as +- tolerance error. In addition, the reverse side setting permissible range a is the range from the regular parking range TP to the temporary parking range EP, and this range is as follows:
In other words, even if the engine is started, it is not possible to shift to the reverse range R side.

That is, even if an error occurs when adjusting the mounting position of the inhibitor switch 50 or adjusting the engine starting position with reference to both reference positions c and d, if the error is within the setting tolerance ranges a and b, the engine Although the starting range e may become narrower than this, it will not extend further to the reverse range R side, and even if the required starting range n may become wider than this, it will not become any narrower. . Note that this embodiment shows an example in which both setting allowable ranges a and b are secured to be the widest. If both setting allowable ranges a and b are narrowed while keeping the engine starting range e as it is, both reference positions c and d will be moved to both ends of the engine starting range e, and the required starting range n will be expanded.
If both reference positions c and d are left as they are and both setting allowable ranges a and b are narrowed, the engine starting range e becomes narrower.

A solenoid 30 is provided near the position plate 20 and fixed to the vehicle body 100. This solenoid 30 has a solenoid pin 31
is provided so as to be able to protrude and retract, and when this solenoid pin 31 protrudes, it closes the entrance of the parking lock groove 22, as shown in FIG. When the shift lever 10 is placed in range EP, it is possible to restrict the shift operation so that the shift pin 12 cannot be shifted to the reverse range R side, and the solenoid pin 3
1 is arranged so that the shift restriction can be canceled when the vehicle moves out. In addition, the solenoid 30 is disposed in a position where the solenoid pin 31 is in a protruding state and its tip end surface 32 is close to the shift pin 12 which is disposed in the non-restricted portion. The solenoid 30 is actuated by a solenoid control circuit 40, which operates a normally closed first relay switch 4, as shown in FIG.
1 and a normally open second relay switch 42, and a position-detecting parking range switch 43 that is turned OFF when the shift lever 10 is in the regular and temporary parking ranges TP and EP, and a foot brake (not shown). Brake switch 44, which turns on when you press the button, and ignition switch 4
5. Note that 46 is a diode for preventing backflow, and 102 is a battery mounted on the vehicle. This solenoid control circuit 40 causes the solenoid pin 31 to protrude when the ignition switch 45 is ON and shifts to the regular and temporary parking ranges TP and EP, and prevents the shift operation from the regular and temporary parking ranges TP and EP from braking. will be regulated until it is enforced. That is, the solenoid 30 and the solenoid control circuit 40 are designed to create a state in which the brake is always depressed and the vehicle is braked when performing a shift operation from the regular and temporary parking ranges TP and EP. be. Next, the operation of the embodiment will be explained. In the automatic transmission control device of this embodiment, shift operation is regulated by the main lock wall 221 in the regular parking range TP, and shift operation to the reverse range R side is regulated by the auxiliary lock wall 222 in the temporary parking range EP. . In addition, temporary parking range
It is possible to shift from EP to regular parking range TP. Further, the engine starting range e of the inhibitor switch 50 is at both basic setting positions c,
Since the setting is set by adding 1/2 of both setting tolerance ranges a and b to d, the normal parking range is set.
In TP, the engine is always started and the non-regulated part 24
When the shift pin 12 is located at (position C in the figure), the engine cannot be started.

That is, in the embodiment, whether a shift operation that does not involve disengaging the shift pin 12 is possible or not, and whether or not the engine can be started are shown below.

Shift lever 10 is in the regular parking range
When in TP, you cannot shift, but you can start the engine.

Shift lever 10 is temporary parking range EP
, it is impossible to perform a shift operation in the direction of reverse range R, and engine starting may or may not be possible depending on the setting error.

When the shift lever 10 is located at a position where the shift pin 12 is disposed in the non-restricted portion 24, a shift operation can be performed to either the parking range P or the reverse range R, and the engine cannot be started.

Therefore, in this embodiment, both setting tolerance ranges a and b
Since the error can be tolerated, the inhibitor switch 5
This has the effect of making it easier to adjust the mounting position of the 0 and the engine starting range.

In addition, in the regular and temporary parking ranges TP and EP with the ignition switch 45 turned on,
The solenoid control circuit 40 causes the solenoid pin 31 to stop when the brake is not depressed.
is protruded and the shift operation is restricted, so that when the shift operation is performed from the parking range P, the effect is obtained that the driver himself/herself performs the braking.

Although the embodiments of the present invention have been described above in detail with reference to the drawings, the specific configuration is not limited to these embodiments. For example, in the embodiments, the allowable setting range was made to match the radius of the shift pin; This range may be determined as appropriate.

Further, in the embodiment, an example was shown in which a solenoid and a solenoid control circuit were provided for regulating shift operation in the parking range, but such a regulating means may not be provided.

(Effects of the Invention) As explained above, in the automatic transmission control device of the present invention, a sub-lock wall is formed in the parking lock groove in addition to the main lock wall, and
The allowable setting range that can be set as the engine starting range of the inhibitor switch is provided between the range where the shift operation is restricted by the main lock wall and the range where the shift operation is restricted by the auxiliary lock wall. Since the error can be tolerated within the allowable setting range, it is possible to easily adjust the installation position of the inhibitor switch and adjust the engine starting range.

[Brief explanation of drawings]

FIG. 1 is a side view showing the main parts of an embodiment of the automatic transmission control device of the present invention, FIG. 2 is an overall view showing the entire embodiment of the device, and FIG. FIG. 4 is a circuit diagram showing essential parts of an embodiment of the device, and FIG. 5 is an overall side view showing a conventional example. 10...Shift lever, 12...Shift pin,
20...Position plate, 22...Parking lock groove, 24...Non-regulating portion, 50...Inhibitor switch, 221...Main lock wall, 222...
...Secondary lock wall, a...Reverse side setting allowable range,
b...Overstroke side setting allowable range, e...
Engine starting range.

Claims (1)

[Claims] 1. A shift lever is swingably provided on the vehicle body,
The shift lever is provided with a protruding shift pin, and a position plate is provided with an engagement groove that engages with the shift pin to restrict operation of the shift lever, and the shift pin is provided on the shift lever. The lock is formed so that it can be moved and released from the engagement groove by pressing a button, and the engagement groove has a parking lock that engages with a shift pin in the parking range and restricts the shift operation in the direction of the next range. A groove and a non-restricting portion that is formed adjacent to the parking lock groove and does not restrict shift operation are formed, and the shift pin corresponds to the position of the shift lever and allows the engine to start in the parking range, and the shift pin is placed in the non-restrictive portion. In a control device for an automatic transmission that is provided with an inhibitor switch that does not allow the engine to start when the engine is in the parking range and in a predetermined range, the parking lock groove includes a main lock wall that engages with a shift pin of the parking range; A sub-lock wall is formed closer to the non-restricting portion than the lock wall and is capable of regulating a shift operation in the direction of an adjacent range, and a setting allowable range that can be set as the engine starting range of the inhibitor switch is defined as the 1. A control device for an automatic transmission, characterized in that the control device is provided between a range in which a shift operation is regulated by the main lock wall and a range in which a shift operation is regulated by the auxiliary lock wall.