JP3500957B2 - Control circuit for automatic transmission with manual shift function - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control circuit for an automatic transmission with a manual shift function.

[0002]

2. Description of the Related Art FIG. 3 shows a selector device 1 for an automatic transmission with a manual function, and FIG. 4 shows a steering 16 with a manual function.

The selector 1 of FIG. 3 has a parking range "P", a reverse range "R", a neutral range "N", a drive range "D", a third range "3" and a second range "2" in that order. An automatic transmission path 4 arranged in a row in the vehicle front-rear direction to guide the select lever 2
And a manual transmission line 6 that is arranged in parallel with the automatic transmission line 4 centering on a position corresponding to the drive range "D" and that has an upshift range "+" and a downshift range "-" in the vehicle longitudinal direction, A communication passage 8 that connects the automatic transmission path 4 and the manual transmission path 6 at a position corresponding to the drive range "D", and a select lever 2
The manual mode switch 10 for detecting whether or not the switch has moved to the manual transmission path 6, the upshift switch 12 for detecting whether or not the select lever 2 has selected the upshift range "+", and the select lever 2. The downshift switch 14 detects whether or not the downshift range "-" is selected. Further, the steering wheel 16 with a manual function shown in FIG. 4 has the first and second up-down selection switches 1 at positions near the left and right sides.
8 and 20 are arranged, and these switches select the upshift range “+” when the movable part is moved to the upper part,
When the movable part is moved to the lower part, the downshift range "-" is selected.

The manual mode switch 10,
Upshift switch 12, downshift switch 14
And first and second up-down selection switches 18, 2
0 constitutes the control circuit shown in FIG. 5, for example, and is connected to the control unit 22. Although not shown,
First to fifth input terminals 22a of the control unit 22
~ 22e and each switch 10, 12, 14, 18, 20
Positive power supply terminals are connected to the connection lines between and via resistors. Further, in this circuit, an input terminal that maintains a low level is called an input terminal to which an “ON signal” is input, and an input terminal that maintains a high level is an “OF”.
It is called an input terminal to which the F signal "is inputted.

When the select lever 2 moves from the drive range "D" of the automatic transmission 4 to the upshift range "+" of the manual transmission 6, the make contacts 10a, 12a of the manual mode switch 10 and the upshift switch 12 are moved. Closed, and the first and second input terminals 22
Since the ON signals are input to a and 22b, the control unit 22 controls to shift up the shift stage of the automatic transmission to the high speed side by one speed based on the ON signals.

Further, the select lever 2 has an automatic transmission path 4
When the drive range "D" is moved to the downshift range "-" of the manual transmission path 6, the make contacts 10a and 14a of the manual mode switch 10 and the downshift switch 14 are closed, and the first and third input terminals 22a,
Since the ON signal is input to 22c, the control unit 22 performs control for shifting down the shift stage of the automatic transmission to the low speed side by one speed based on the ON signals.

Further, the first and second up-down selection switches 18 and 20 arranged on the steering wheel 16 are two-contact type switches, and the movable portion of the first up-down selection switch 18 among them is raised. When moving to the shift range "+", the movable contact 18a and the first contact 1
Since the ON signal is input to the fourth input terminal 22d due to conduction with the 8b, the control unit 22 shifts the shift stage of the automatic transmission to the high speed side by one speed based on the ON signal of the fourth input terminal 22d. Control up.

The second up-down selection switch 2
When moving the moving part of 0 to the downshift range "-",
Since the movable contact 20a and the second contact 20c are electrically connected and an ON signal is input to the fifth input terminal 22e, the control unit 22 sets the shift stage of the automatic transmission to 1 based on the ON signal of the fifth input terminal 22e. Control is performed to shift down to the low speed side by the high speed portion.

[0009]

By the way, according to the control circuit shown in FIG. 5, a part of the signal lines constituting the circuits of the first and second up-down selection switches 18 and 20 ( For example, when a failure such as a short circuit occurs at the position indicated by reference numeral 24 in FIG. 5, an ON signal is input to the fourth input terminal 22d to perform unintentional shift-up control, which causes a problem in the fail-safe function. There is.

Therefore, instead of the two-contact type first and second up-down selection switches 18 and 20, two three-contact type switches are used, and the first contact on the upshift range "+" side of these switches is used. If the third contact indicating the switch neutral position between the second contact on the downshift range “−” side and the third contact is connected to a predetermined input terminal of the control unit 22, monitoring of signal information from this input terminal is performed. Thus, it is possible to judge the abnormality of the circuit of the first and second up-down selection switches and prevent the shift-up or shift-down control.

However, it is difficult to dispose a three-contact type switch on the steering wheel 16 because of layout restrictions, and a switch on the steering wheel 16 that can prevent shift up or down shift control even if an abnormality occurs. Circuit development is desired.

Therefore, the present invention has been made in view of the above circumstances, and is provided with a manual shift function provided with a steering switch which can prevent shift control of upshifting or downshifting even if an abnormality occurs in a circuit. An object is to provide a control circuit for an automatic transmission.

[0013]

In order to solve the above-mentioned problems, the invention according to claim 1 provides a selector device for selecting an automatic traveling mode or a manual traveling mode by operating a selector lever, and a selector device arranged in the selector device. Was set up,
A select switch that sends an upshift signal when the select lever selects an upshift in the manual running mode and sends a downshift signal when a downshift is selected; and an upshift signal and Automatic with manual shift function equipped with a steering switch for transmitting a downshift signal, and a control unit for controlling the setting of a predetermined gear stage in the automatic transmission based on the signals transmitted from the select switch and the steering switch In the transmission, two contacts having the steering switch, a movable contact, a first contact connected to an upshift signal terminal of the control unit, and a second contact connected to a downshift signal terminal of the control unit. Scheme And a plurality of two-contact type switches so as to switch to the first contact side or the second contact side in synchronization with each other. only when the same type of the upshift signal or the down-shift signal is sent from all the switches, and the steering switch signal confirmation means for causing the setting control of a predetermined gear position to the control unit, the stearic
Switch selects upshift or downshift
The control unit is not in the neutral state.
The steering switch neutral recognition means
Provided.

According to a second aspect of the present invention, in the control circuit of the automatic transmission with a manual shift function according to the first aspect, the steering switch signal confirmation means is the first contact of each two-contact type switch and the first contact. An AND circuit is provided between the upshift signal terminals of the control unit and between the second contact of each two-contact type switch and the downshift signal terminal of the control unit.

[0015]

Further, the invention according to claim 3 is the claim
In the control circuit of the automatic transmission with a manual shift function described in 1 or 2 , the steering switch neutral recognition means is energized between the first contact of each two-contact switch and the upshift signal terminal of the control unit. And a logic circuit that sends a predetermined signal to the control unit only when the second contact of each two-contact type switch and the downshift signal terminal of the control unit are not energized.

[0017]

According to the control circuit of the automatic transmission with a manual shift function according to the first aspect of the present invention, if a failure such as a short circuit occurs in a part of the steering switch, the multiplex switch that constitutes the steering switch. Although the same type of upshift signal or downshift signal is not transmitted from all of the control units, the steering switch signal confirmation means of the present invention is the control unit only when the same type of upshift signal or downshift signal is transmitted from all of the multiplexing switches. Since the setting control of the predetermined shift speed is performed in the above, it is possible to reliably prevent the manual traveling mode control from being executed when a failure such as a short circuit occurs in a part of the switch as described above.

Further , according to the first aspect of the invention, since the steering switch is a two-contact type switch, a low-cost control circuit can be realized without being restricted by layout.

Further , according to the invention of claim 1 , since the steering switch neutral recognition means is provided for causing the control unit to recognize that the steering switch is in the neutral state in which the upshift or the downshift is not selected, the steering wheel is provided. It is possible to reliably determine the abnormality of the switch and provide a highly reliable control circuit.

Further, according to claim 2 or claim 3,
According to the description , since the steering switch signal confirmation means and the steering switch neutral recognition means are composed of simple circuits, it is possible to provide a control circuit at a lower cost.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A control circuit for an automatic transmission with a manual shift function according to the present invention will be described below with reference to the drawings. The same components as those shown in FIGS. 3 to 5 are designated by the same reference numerals, and the description thereof will be omitted.

FIG. 1 shows a first embodiment of the present invention. In this embodiment, the left up-down selection switch 18 arranged on the left side of the steering wheel 16, the right up-down selection switch 20 arranged on the right side, and the manual mode switch 30 of the selection device 1 connected in series to each other, the up mode. The shift switch 32 and the downshift switch 34, and the first to fifth parts connected to these switches.
A control unit 36 having input terminals 36a to 36e is provided.

The manual mode switch 30 is a make-break contact type switch, and has a movable contact 30a.
Is grounded to the earth E ₃ , and the first contact 30b is connected to the first signal line 4
0a to the first input terminal 36a of the control unit 36, and the second contact 30c to the movable contact 32a of the upshift switch 32.

The upshift switch 32 is also a make-break contact type switch, and the first contact 32b is
Connected to the fifth signal line 40e via the second signal line 40b,
The second contact 32c is connected to the movable contact 34a of the downshift switch 34. The fifth signal line 40e
Is connected between the output terminal of the first OR circuit 42a described later and the third input terminal 36c of the control unit 36.

The downshift switch 34 is also a make-break contact type switch. The first contact 34b is connected to the seventh signal line 40g through the third signal line 40c, and the second contact 34c is the fourth signal line 40d. Is connected to the second input terminal 36b of the control unit 36 via. The seventh signal line 40g is connected to the second OR circuit 42 described later.
It is connected between the output terminal of b and the fifth input terminal 36e of the control unit 36.

The left-side up-down selection switch 18
Is composed of a dual type switch in which a left side first switch 22 and a left side second switch 24, which are switched in synchronization with each other, are connected in parallel.

The left side first switch 22 has a movable contact 2
2a, first contact 22b, second contact 22c and normally closed contact 2
2 contact type switch equipped with 2d, movable contact 22
a is connected to the second contact 34b of the downshift switch 34 via the eighth signal line, and the first contact 22b is connected to the ninth signal line 4
0j is connected to one of the two input terminals of the first AND circuit 44a, and the second contact 22c is connected to the tenth signal line 40k.
Is connected to one of the two input terminals of the second AND circuit 44b via. Incidentally, the first AND circuit 44a
Is connected to one input terminal of the first OR circuit 42a, and the output terminal of the second AND circuit 44b is connected to one input terminal of the second OR circuit 42b.

The left second switch 24 is a two-contact type switch having a movable contact 24a, a first contact 24b, a second contact 24c and a normally closed contact 24d.
4a is connected to the second contact 34b of the downshift switch 34 via the eighth signal line, and the first contact 24b is connected to the other of the two input terminals of the first AND circuit 44a via the eleventh signal line 40m. The second contact 24c is the twelfth signal line 4
It is connected to the other of the two input terminals of the second AND circuit 44b via 0n.

Then, the ninth to twelfth signal lines 40j to 40
The four inverting input terminals of the first NOR circuit 46a are connected to each of n, and the output terminal of the first NOR circuit 46a is connected to one of the two input terminals of the third AND circuit 44c. The output terminal of the third AND circuit 44c is connected to the fourth input terminal 36d of the control unit 36 via the sixth signal line 40f.

The right-side up-down selection switch 20 is also composed of a duplication type switch in which a right-side first switch 26 and a right-side second switch 28, which are switched in synchronization with each other, are connected in parallel.

These right first switch 26 and right second switch
The switch 28 is a two-contact type switch, and the movable contact 2
6a and 28a are connected to the second contact 34b of the downshift switch 34 via the eighth signal line 40h, and the first contact 26
The thirteenth and fourteenth signal lines 40p and 40q, which are respectively connected to b and 28b, are connected to the two input terminals of the fourth AND circuit 44d. The output terminal of the fourth AND circuit 44d is connected to one input terminal of the above-mentioned first OR circuit 42a. Further, the second contacts 26c, 28 of the right side first switch 26 and the right side second switch 28
fifteenth and fifteenth signal lines 40 respectively connected to c
r and 40s are connected to the two input terminals of the fifth AND circuit 44e. The output terminal of the fifth AND circuit 44e is connected to one input terminal of the second OR circuit 42b described above.

Then, thirteenth to sixteenth signal lines 40p to 4
Each of the 0s is connected to the four inverting input terminals of the second NOR circuit 46b, and the output terminal of the second NOR circuit 46b is connected to the other of the two input terminals of the third AND circuit 44c.

Although not shown, the connection lines between the first to fifth input terminals 36a to 36e of the control unit 36 and the respective switches 30, 32, 34, 18, 20 are positively connected via a resistor. The power terminals of are connected respectively.

Then, the control circuit having the above-mentioned configuration operates the select lever 2 of the select device 1 or the steering 1
6, the input terminal of the control unit 36 is turned on or off according to the operation of the left-side up-down selection switch 18 and the right-side up-down selection switch 20.
The control unit 36 controls the shift based on the states of those input terminals. In the present embodiment, an input terminal that maintains a low level is called an “ON” input terminal, and an input terminal that maintains a high level is “OFF”.
It is called a state input terminal.

That is, when the select lever 2 is located on the automatic transmission path 4, the control unit 3
The input of the first input terminal 36a of No. 6 is turned on to execute the automatic traveling mode control.

Further, the select lever 2 is connected to the automatic transmission path 4
To the manual transmission path 6 via the communication passage 8, and the upshift range "+" and the downshift range "-"
When neither of the above is selected, the second input terminal 36b of the control unit 36 is turned on. Further, when the select lever 2 selects the upshift range "+", the fifth input terminal 36e of the control unit 36 is turned on, so that the manual drive mode control for shifting up the gear to the higher speed side by one speed is executed. To do. Also,
When the select lever 2 selects the downshift range "-", the third input terminal 36c of the control unit 36
Is turned on to execute the manual drive mode control in which the gear position is shifted down to the lower speed side by one speed.

The left up-down selection switch 1
When 8 selects the upshift range "+", the third input terminal 36c of the control unit 36 is turned on,
Executes upshift manual drive mode control.
When the left up-down selection switch 18 selects the downshift range "-", the fifth input terminal 36e of the control unit 36 is turned on, and the downshift manual traveling mode control is executed. Even when the right side up-down selection switch 20 selects the upshift range "+" or the downshift range "-",
The control unit 36 executes similar control.

Here, the first NOR circuit 46a is connected to the ninth NOR circuit 46a.
A predetermined control signal is output from the output terminal when all of the twelfth signal lines 40j to 40n are not energized, that is, when the left first switch 22 and the left second switch 24 are in the neutral position. In addition, the second NOR circuit 46
b is a predetermined control signal from the output terminal when all the 13th to 16th signal lines 40p to 40s are not energized, that is, when the right first switch 26 and the right second switch 28 are in the neutral position. Will output.

As a result, when both the left up-down selection switch 18 and the right up-down selection switch 20 do not select either the upshift range "+" or the downshift range "-", the control unit 36. The fourth input terminal 36d of is in the ON state.

Here, the control unit 36 of the present embodiment can judge the abnormality of the left side up-down switch 18 and the right side up-down switch 20, and surely prevent the shift control at the time of this abnormality. You can

That is, when both the left up-down selection switch 18 and the right up-down selection switch 20 do not select either the upshift range "+" or the downshift range "-", for example, the left up-down. When a part of the ninth signal line 40j of the down switch 18 is short-circuited, the ninth signal line 40j is energized and the tenth signal line 40j is turned on.
~ Since the 12th signal lines 40k to 40n are not energized,
The predetermined control signal is not output from the output terminal of the first NOR circuit 46a. Therefore, since the fourth input terminal 36d of the control unit 36 is turned off, it is possible to determine the abnormality of the left up-down selection switch 18 and the right up-down selection switch 20.

Then, the ninth signal line 40j is energized,
If the 0 signal line 40k is not energized, a predetermined control signal is not output from the output terminal of the first AND circuit 44a, so that the third input terminal 36c of the control unit 36 is turned off, and the upshift manual traveling mode is performed. No control is exercised.

Similarly, even if any of the other signal lines 40m to 40s constituting the left up-down selection switch 18 and the right up-down selection switch 20 is short-circuited, the first NOR circuit 46a or the first NOR circuit 46a Since the predetermined control signal is not output from the output terminal of the NOR circuit 46b of No. 2, the fourth input terminal 36d of the control unit 36 is in the OFF state, and the left up-down selection switch 1
8 and the right side up-down selection switch 20 can be determined to be abnormal. Further, in this state, since the predetermined control signal is not output from the outputs of the first to fourth AND circuits 44a to 44d on the abnormal side, the third input terminal 36c of the control unit 36 is turned off. , Manual drive mode control is not executed.

Therefore, in the present embodiment, the left-side up-down switch 18 and the left-side up-down switch 20 are connected in parallel and are switched in parallel with each other in a duplex system (a left-side first switch 22 and a left-side first switch). Two
The switch 24, the right first switch 26, and the right second switch 28), and the first contacts of these duplex switches (for example, the left first switch 22 and the left second switch 24 have the first contacts 22b, 24b) and the third input terminal 36c of the control unit 36, the second
An AND circuit (for example, the left first switch 22 and the left second switch 24, the second contacts 22c and 24c in the left second switch 24) and the fifth input terminal 36e of the control unit 36 are provided. Since the first AND circuit 44a) is arranged in the left side second switch 24, even if a failure such as a short circuit occurs in a part of the duplication type switch, the third input of the control unit 36 is generated. Since the terminal 36c is in the OFF state, it is possible to avoid the execution of the unintentional manual traveling mode control.

The left-side up-down switch 18 and the left-side up-down switch 20 recognize the first NOR circuit 46a and the first NOR circuit 46a for recognizing when neither the upshift range "+" nor the downshift range "-" is selected. Since the second NOR circuit 46b is provided, it is possible to reliably determine the abnormality of the steering switch and provide a highly reliable control circuit.

The left side up-down switch 18 and the left side up-down switch 20 of this embodiment are
Since the two-contact type switch is used, a low-cost control circuit can be realized without being restricted by layout.

The first AND circuit 4 of the present embodiment
4a and the fourth AND circuit 44a correspond to the steering switch signal confirmation means of the present invention, and the first NOR circuit 4
6a and the second NOR circuit 46b correspond to the steering switch neutral recognition means of the present invention.

Next, FIG. 2 shows a second embodiment of the present invention. The same components as those shown in FIG. 1 are designated by the same reference numerals and the description thereof will be omitted.
The left-side up-down selection switch 50 of this embodiment is
This is a duplex switch having the same configuration as that of FIG. 1 and including a left-side first switch 22 and a left-side second switch 24 that are switched in synchronization with each other.

The left side first switch 22 has a movable contact 22a.
Downshift switch 34 via the eighth signal line 40h.
Of the control unit 36 through the ninth signal line 40j, and the second contact 22c is connected to the tenth signal line 4 of the control unit 36.
It is connected to the fifth input terminal 36c of the control unit 36 via 0k. Also, the second left switch 24
The movable contact 24a is connected to the second contact 34b of the downshift switch 34 via the eighth signal line 40h, and the first contact 24b is two inversions of the third NOR circuit 46c via the eleventh signal line 40m. The second contact 24c is connected to one of the input terminals and is connected to the other inverting input terminal of the third NOR circuit 46c via the twelfth signal line 40n. In addition,
The output terminal of the third NOR circuit 46c is connected to the output terminal of the control unit 36 via the sixth signal line 40f.

Also, the right side up-down selection switch 2
Reference numeral 0 is also a double-type switch having the same configuration as in FIG. 1 and including a right side first switch 26 and a right side second switch 28 that are switched in synchronization with each other.

The right first switch 26 has a movable contact 26a.
Downshift switch 34 via the eighth signal line 40h.
Second contact point 34b, the first contact point 26b is connected to the ninth signal line 40j via the seventeenth signal line 40t, and the second contact point 26c is connected to the tenth signal line 4u via the eighteenth signal line 40u.
It is connected to 0k. Also, the right side second switch 28 is
The movable contact 26a is connected to the second contact 34b of the downshift switch 34 via the eighth signal line 40h, and the first contact 2
8b passes through the 19th signal line 40v and the 11th signal line 40m
The second contact 28c is connected to the twelfth signal line 40n via the twentieth signal line 40w.

Here, the third NOR circuit 46c is connected to the first NOR circuit 46c.
1 signal line 40m, 12th signal line 40n, 19th signal line 4
When 0v and all of the twentieth signal line 40w are not energized, that is, when the left second switch 24 and the right second switch 28 are in the neutral position, a predetermined control signal is output from the output terminal. As a result, when both the left up-down selection switch 18 and the right up-down selection switch 20 do not select either the upshift range "+" or the downshift range "-," the fourth unit of the control unit 36 is selected. The input terminal 36d is in the ON state.

According to the control circuit having the above configuration, when both the left up-down selection switch 50 and the right up-down selection switch 52 do not select either the upshift range "+" or the downshift range "-". In addition, for example, when a part of the tenth signal line 40k of the left up-down switch 50 is short-circuited, the fourth input terminal 36d and the fifth input terminal 3 of the controller unit 36 are
6e is turned on. At the normal time, the fourth input terminal 36
Since the fifth input terminal 36e is in the OFF state when d is in the ON state, it is possible to determine the abnormality of the left up-down selection switch 50 and the right up-down selection switch 20 and stop the manual travel mode control. it can.

Similarly, even if any of the other signal lines forming the left-side up-down selection switch 50 and the right-side up-down selection switch 52 is short-circuited, together with the fourth input terminal 36d of the controller unit 36, Since the third input terminal 36c or the fifth input terminal 36e is turned on, it is possible to determine the abnormality of the left up-down selection switch 50 and the right up-down selection switch 20 and stop the manual travel mode control.

In this embodiment, the third NOR circuit 46c and the third and fifth control units 36 are provided.
The signals input to the input terminals 36c and 36e correspond to the steering switch signal confirmation means of the present invention, and the third NOR
The circuit 46c corresponds to the steering switch neutral recognition means of the present invention.

[Brief description of drawings]

FIG. 1 is a diagram showing a control circuit according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a control circuit according to a second embodiment of the present invention.

FIG. 3 is a schematic diagram showing a selector device with a manual shift function.

FIG. 4 is a schematic view showing a steering switch arranged on the steering wheel, which is capable of selecting an upshift command or a downshift command.

FIG. 5 is a diagram showing a control circuit of a conventional automatic transmission with a manual shift function.

[Explanation of symbols]

1 Select device 2 Select lever 16 Steering 18, 50 Left up-down selection switch (steering switch) 20, 52 Right up-down selection switch (steering switch) 22, 24, 26, 28 Two-contact switch 30 Manual mode switch 32 upshift switch 34 downshift switch 36 control unit 36c third input terminal (downshift signal input terminal) 36e fifth input terminal (upshift signal input terminal)

─────────────────────────────────────────────────── --- Continuation of the front page (56) References JP-A-9-226403 (JP, A) JP-A-10-21794 (JP, A) JP-A-8-233101 (JP, A) Actual development Sho-58- 6343 (JP, U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) F16H 59/00-63/48

Claims (3)

(57) [Claims] 1. A selector device for selecting an automatic traveling mode or a manual traveling mode by operating a selector lever, and a selector device disposed in the selector device, which is operated when the selector lever selects an upshift in the manual traveling mode. A select switch that sends a shift signal and sends a downshift signal when a downshift is selected, a steering switch that is provided in the steering wheel and sends an upshift signal and a downshift signal, the select switch and the steering switch In a automatic transmission with a manual shift function, the automatic transmission having a control unit for performing setting control of a predetermined shift stage in the automatic transmission based on a signal transmitted from the steering switch, the steering switch, the movable contact, and the control unit. Switch having a first contact connected to an upshift signal terminal of the control unit and a second contact connected to a downshift signal terminal of the control unit, and further, the first contact side or the first contact side. The switch is configured as a multiplex switch including a plurality of the two-contact type switches so as to switch to the two-contact side in synchronization with each other. Only when the downshift signal is transmitted, the steering switch signal confirmation means for causing the control unit to perform the setting control of the predetermined shift stage and the steering switch for the upshift or downshift.
If you are in a neutral state with no
Steering switch to be recognized by the roll unit Neutral
A control circuit for an automatic transmission with a manual function , which is provided with a recognition means . 2. The steering switch signal confirmation means is provided between the first contact of each two-contact switch and the upshift signal terminal of the control unit, and each two.
The control circuit for an automatic transmission with a manual function according to claim 1, wherein the control circuit comprises an AND circuit provided between the second contact of the contact type switch and the downshift signal terminal of the control unit. 3. Steering switch neutral recognition means
The first contact of each two-contact type switch and the controller
Energize between the upshift signal terminals of the
And the second contact of each two-contact type switch and the
Between the downshift signal terminals of the control unit
Specified in the control unit only when not energized
Is composed of a logic circuit for transmitting the signal of
Automatic shift with a manual function according to claim 1 or 2.
Machine control circuit.