JPS608545A - Speed change gear for automatic transmission - Google Patents

Abstract

PURPOSE:To carry out a smooth gear changing operation without error by displaying the present gear change position and a gear change position to which a gear can be changed in a speed change gear in which a gear change position for an automatic transmission is selected by operating a select switch. CONSTITUTION:When a gear change position command signal from a select switch 2 is inputted into a logical section 1 through an input control circuit 3, a correspondent gear change position shifting signal is outputted to a motor drive circuit 4, and the manual valve of an automatic transmission is shifted to a certain gear change position by means of a motor 5. This gear change position is detected by means of a detecting device 7 and, in accordance with this output, the present gear change position is displayed on a display section 9 through a first gear change position display device 8. Also, the output from the logical section 1 controls a second gear change position display device 10, displaying the present gear change position and a gear change position to which a gear can be shifted in accordance with the driving condition of a car, on its display section 11.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a transmission device for an automatic transmission in which a shift position of the automatic transmission can be selected by operating a select switch such as a button. .

(Prior Art) Generally, the shift position of an automatic transmission is changed by manually operating a manual switching valve using a floor-type or column-type lever. However, switching the manual valve described above requires a considerable amount of force, which is not desirable considering the increasing number of female drivers and elderly drivers.
Moreover, the lever and the link mechanism connected thereto occupy a considerable amount of space, which is undesirable in terms of enlarging the living space and ensuring freedom in design such as component arrangement.

Recently, in order to solve the above-mentioned problems, as shown in Japanese Utility Model Application Publication No. 57-25237, manual valves have been switched by electromagnetic means such as motors rather than by human power. It has been proposed that the controller is provided with a select switch that commands the operating position of the electromagnetic means, and the shift position of the automatic transmission is changed in accordance with the operation of the select switch. In this conventional type, for example, the gear shift position may be switched to the reverse position when driving forward, and in addition to the select switch, there is a check switch to confirm whether or not the gear shift position can be shifted to the desired position. The control circuit is configured so that the shift position does not change when a select switch is provided separately or a select switch that should not be changed is operated.

However, although the above conventional system prevents the driver from accidentally operating a select switch that should not be changed, it does not allow the driver to immediately check the current shift position. This causes a problem of confusion in changing the gear position. Especially in today's world, where the number of female drivers and others who lack knowledge about the structure and characteristics of automobiles, especially automatic transmissions, is increasing, it is extremely difficult to use a vehicle if it is not possible to immediately determine the shift position. It will be inconvenient.

(Object of the invention) The present invention has been made in consideration of the above circumstances, and
It is an object of the present invention to provide a transmission device for an automatic transmission that allows a driver to immediately determine the currently available shift position.

(Structure of the Invention) In order to achieve the above-mentioned object, one aspect of the present invention is to display the current shift position by a lamp, and to also display the shiftable shift position by a separate lamp.

Specifically, as shown in FIG. 1, the electromagnetic means 5 for manual valve switching of the automatic transmission 6, a controller that controls the operating position of the electromagnetic means 5, and an electromagnetic means ' In addition to this, in addition to this, there is a first shift position display which, for example, corresponds to the select switch 2 and causes the corresponding select switch 2 to emit light as a whole when lit. Under the control of a first display control means which receives an output from a shift position detection means having a lamp and which detects each shift position of the automatic transmission 6, the current shift position is indicated by the first shift position display lamp. It is designed to be displayed. Furthermore, a second shift position display lamp is provided corresponding to the select switch 2, for example, such that when lit, only the character portion indicating the shift position attached to the corresponding select switch 2 emits light;
A gear shift switchable by the second shift position display lamp under the control of a determining means that determines a shiftable shift position in response to an output from the shift position detection means and a vehicle state detection means that detects the state of the vehicle. The location is now displayed.

(Example) In Fig. 2, first, let us explain the overall outline.
1 is a logic section, and when the shift position command signal from the select switch 2 is inputted under the control of the input control circuit 3, the logic section l outputs a corresponding shift position switching signal to the motor drive circuit 4. This output causes the motor 5 as an electromagnetic means to switch to a position corresponding to the shift position switching signal, that is, the manual valve of the automatic transmission to a shift position corresponding to the shift position switching signal. The operating position of the motor 5, that is, the shift position of the automatic transmission, is the operating position of the motor 5.
It is detected by a shift position detection device 7, such as a potentiometer, which is interlocked with the shift position. Then, the shift position detection device 7
The output from is input to the first shift position display device 8,
The display section 9 displays the current shift position. Further, the logic section 1 outputs an output to the second shift position display device 10, and the shift position that can be changed is displayed on the display section 11 according to the current shift position and the vehicle condition. .

In addition, 12 is a power supply circuit which adjusts and steps down the voltage of 10B from a battery (not shown), and this stepped down +5V is applied to the logic section 1, the motor drive circuit 4, and the first and second shift position display devices 8.
, IO, and the regulated +12V voltage is used to drive the motor 5.

The logic section 1 has an input terminal P-1 to which a shift position command signal from the select switch is input, and an input terminal P' which outputs a shift position switching signal to the motor drive circuit 4.
P'' to output a switchable shift position display signal to the output terminal of ~1' and the second shift position display device 10.
This logic section 1 has a function of a determination means for determining the shift position that can be changed. Therefore, the logic section 1 includes a signal from the ignition operation sensor SI, a signal from the ignition operation sensor SI, an engine Signal from operation sensor S2, signal 1 from accelerator opening sensor S, brake operation sensor S4
Vehicle conditions such as a signal from the vehicle speed sensor S5, a signal from the engine speed sensor S6, and the like are inputted. Of course, the re-output terminals are P', P
” is in the parking position, R”, R” is in the reverse position,
N' and N'' correspond to the neutral position, D' and D'' to the drive position, 2' and 2'' to the 2nd speed position, and 1' and 1'' to the 1st speed position, respectively.

The motor drive circuit 4 compares the reference voltage corresponding to the shift position switching signal from the logic section l with the detection voltage detected by the shift position detection device 7, and controls the motor 5 according to the shift position switching signal. It is configured to apply appropriate pressure and reverse rotation until it reaches the corresponding operating position, and to stop when it reaches the operating position corresponding to the shift position switching signal.

The display section 9 of the first shift position display device 8 displays 9.P to 9.
・It has an indicator lamp consisting of 1 LED element, indicator lamp 9・P is in the parking position, 9・R is in the reverse position, 9φN is in the neutral position, 9・D is in the drive position, and 9・2 is in the 2nd position. 9.1 corresponds to the 1st speed position, and 9.1 corresponds to the 1st speed position. Further, the control circuit 13 of the second shift position display device lO compares the reference voltage corresponding to each shift position of P-1 with the detection voltage detected by the shift position detection device 7, ~9.l out of
Only the indicator lamp corresponding to the current shift position of the automatic transmission is lit.

The display section 11 of the second shift position display device IO is 1l-
It has an indicator lamp consisting of a P-11.l LED element,
The indicator lamp 11-P is in the parking position, 11-R is in the reverse position, 11.N is in the neutral position, 11.
D is in the drive position, it・2 is in the 2nd gear position, 11Φ1
correspond to the 1st gear position, respectively. Further, the control circuit 14 of the second shift position display device 1O is roughly composed of switching transistors 14.P to 14.1, and the switching transistor 14.P receives a high signal from the output terminal P'' of the logic section 1. The switching transistor 14.R is energized and lights up the indicator lamp 11-R when it receives a high signal from the output terminal R'' of the logic section l.
When the switching transistor 14.N receives a high signal from the output terminal N'' of the logic section l, it is energized to light up the display lamp 11.N, and the switching transistor 14.D lights up the display lamp 11.N. output terminal D”
Indicator lamp 1 is energized when receiving a high signal from
1@D lights up, switching transistors 14 and 2
is energized to light the display lamp 11-2 when it receives a high signal from the output terminal 2'' of the logic section l, and the switching transistor 14.l is connected to the output terminal 1 of the logic section l.
When it receives a high signal from ``, it is energized to light up the indicator lamp 11.1.

The select switch l has six switches P-1, and each of these switches is a self-resetting button type (a type that returns to its original position when the pressing force is released) in the embodiment. ). Of course, the above P
The switch is in the parking position, the R switch is in the reverse position, the N switch is in the neutral position, and the D switch is in the drive position. What about the switch? One switch corresponds to the first speed position. When any one of these switches is pressed, a corresponding shift position command signal is output as a low signal.

The input control circuit 3 is composed of an OR circuit group 15 and an inverter element group 16. This OR circuit group 15 has six OR circuits 15.P-15.l, from the OR circuit 15.P to the P input terminal, from the OR circuit 15φR to the R input terminal, and from the OR circuit 15.P to the R input terminal. From N to N input terminal, OR circuit 15, from D to D input terminal, OR circuit 1
5.2 to 2 input terminal, OR circuit 15 fist 1 to 1
These are output to the input terminals, and these are 15-
When receiving a low signal from P-15-1, logic section l
is in operation. One input terminal of such an OR circuit 15.P has a P switch.

The signal from the R switch is input to one input terminal of the OR circuit 15-H, the signal from the N switch is input to one input terminal of the OR circuit 15-N, The signal from the D switch is input to one input terminal of the OR circuit 15.D, the signal from the two switches is input to one input terminal of the OR circuit 15.2, and the signal from the two switches is input to one input terminal of the OR circuit 15.1. A signal from one switch is input to the input terminal.

The inverter element group 16 has a diameter of 16φF-16·l.
The OR circuit 15 is composed of two inverter elements.
- A signal from the P'' output terminal of the logic section l is inputted to the other input terminal of P via the inverter element 16 P.
The other input terminal of the OR circuit 15.R receives a signal from the R'' output terminal of the logic section l via the inverter element 16.R, and the other input terminal of the OR circuit 15.N receives the signal from the inverter element 16.・The signal from the N'' output terminal of the logic section l is inputted via the inverter element 16-D to the other input terminal of the OR circuit 15-D.
"The signal from the output terminal is input, and the OR circuit 15.2
The signal from the 2'' output terminal of the logic section l is inputted to the other input terminal of the inverter element 16.2, and the signal from the 2'' output terminal of the logic section l is input to the other input terminal of the OR circuit 15.
1, a signal from the 1'' output terminal of the logic section l is inputted.

Here, a display lamp 9 for displaying the current gear shift position is displayed.
11P to 9.l are incorporated into the corresponding switches P to P of the select switch 2, and when they are turned on, the corresponding switches are made to emit light as a whole. In addition, an indicator lamp 11 for displaying shift positions that can be changed.
・P~11・1 is incorporated into the switch corresponding to P-1 of the select switch 2, and when it is lit, only the character portion attached to the corresponding switch is made to emit light.

Next, the control contents of the above configuration will be explained with reference to FIG. 3 and FIG. Whether the engine is running or not (indicated by 1 if it is working and 0 if it is not in Figure 4), whether the accelerator is fully closed. whether the brake (handbrake or foot brake) is ON (in Figure 4, 1 indicates when it is fully closed and O indicates that it is not), and whether the brake (handbrake or foot brake) is ON (in Figure 4, 1 indicates that it is fully closed). (0 indicates otherwise), whether the vehicle speed is zero (in Figure 4, zero is indicated by 1, otherwise O is indicated), and whether the engine does not overrun (maximum allowable rotation speed). (In Fig. 4, the case where there is no overrun is indicated by 1 and the case where it is not is indicated by O). Furthermore, the shiftable shift positions in FIG. 4 are indicated by 1 if the shift is possible, and O if the shift is not possible. Note that whether or not there is no overrun mentioned above means whether or not a so-called downshift is possible. For example, if the current gear shift position is 2nd gear, considering the engine speed, it is possible to shift down to 1. This means whether or not the engine exceeds the maximum allowable rotation speed when switching to a high speed position. Of course, the map shown in FIG. 4 is created in advance and stored in the logic section 1.

Under the above premise, first, step P1 in Fig. 3 is performed.
~P7, the current shift position and the above-mentioned vehicle condition are sequentially read. Next, in step P8, in accordance with the readings in steps P and P7, it is determined which display lamp among the shiftable shift positions, ie, display lamps lIF''11-1, is to be lit using the map shown in FIG. Then, in accordance with the determination in step P8, in step P, a lighting signal is issued to the display lamp to be lit.

To explain the above points in detail, the vehicle is currently in the state shown by arrow A in Figure 4, that is, the current gear shift position is in the reverse position, the ignition is on, the engine is running, and the accelerator is not pressed. When fully closed, the brake is ON, and the vehicle speed is other than zero (running), only the indicator lamp 9R of the first shift position display device 8 lights up, that is, only the N switch of the select switch 2 lights up entirely. be done. In this state, since the vehicle is traveling in reverse, it is dangerous to shift to the forward drive positions D, 2, and ■, and it is also dangerous to shift to the P shift position. This is dangerous because the gears are locked, and therefore, the N position is the only shiftable position. Therefore, in this case, a high signal is output only from the second output terminal N'' of the logic section 1, and the corresponding display lamp 11.N is activated by the switching transistor 14.N.
In other words, the letter N switch of the select switch 2 is lit to inform the driver that the N position is the only shiftable shift position.

In addition, the high signal from the second output terminal N'' is input to the OR circuit 15.N after being converted to a low signal by the inverter element 16-N, so if the N switch is closed, , the low signal from the N switch is input to the OR circuit 15.N, and as a result, the low signal is input from the OR circuit 15.N to the N input terminal of the logic section l, thereby changing the gear position of the automatic transmission. is switched to the neutral position.

On the other hand, the second output terminals P'', D'', 2'' of the logic section l,
1'' outputs a low signal, the corresponding indicator lamps 11@P, 11-D, 11.2.1t-i do not light up at all. Also, due to the low signal, the OR circuit 15
・Since a high signal is input to P, 15・D, 15・2゜15・1 via one of the inverter elements 16・P, 16・D, 16◆2.16・l, the select switch Even if the P, D, 2, and l switches of 2 are closed, the logic section 1 does not operate in response to this closure, and the gear shift position is not changed.

Next, if the state shown by arrow A in Fig. 4 described above is the same as the state shown by arrow A except for the state shown by arrow B, that is, the vehicle speed is zero, then to which shift position should you switch? Since there is no problem, all high signals are output from the second output terminal of the logic section l except for ・R'' which corresponds to the current shift position.As a result, 11・P, 11・N, 11
・D, 11・2.11・l indicator lamps are lit.

In addition, the corresponding OR circuits 15・P, 15・N, 15・D
, 15.2.15.1 has a low signal input, so if you press any one of the P, N, D, 2, and l switches of select switch 2 to close it, the logic part l will turn on. The gear shift position corresponds to the closed switch.

In this way, the shiftable position is indicated by the indicator lamp 1l.
- The driver is notified using P-11.l.

Although the embodiments have been described above, the present invention is not limited thereto, and includes, for example, the following cases.

(2) A solenoid other than the motor 5 may be used as the electromagnetic means.

(2) The current shift position and the switchable shift position may be distinguished by the colors of the display lamps for both when they are lit. Further, a re-indication lamp may be provided adjacent to each switch P-1 of the select switch 2.

(2) As the display lamps 9.P to 9.1.11.P-ti-1, light bulbs, liquid crystals, etc. may be used instead of LED elements.

(2) The select switch 2 may be of any suitable type, such as a set of levers.

■Although we have explained the P-1 automatic transmission, which is the most standard automatic transmission, and has six shift positions, the same applies to automatic transmissions that also have overdrive as the shift position. It is something.

(Effects of the Invention) As is clear from the above description, the present invention is designed to display not only the current shift position but also the shift positions that can be shifted. This is extremely convenient in terms of gear shifting operations, since it is possible to instantly know possible gear shifting positions and to perform gear shifting operations smoothly and without errors.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram of the present invention. FIG. 2 is an overall circuit diagram showing an embodiment of the present invention. FIG. 3 is a flowchart showing the control details of the present invention. FIG. 4 is a map showing a partial example of the relationship between the current shift position, vehicle condition, and shiftable shift positions. l: Logic part 2: Select switch 5: Motor (electromagnetic means) 7: Shift position detection device 9・P~9・l: First shift position display lamp 11・P~1
1:1 2nd gear shift position display lamp S1-S: Vehicle condition detection sensor

Claims (1)

[Claims] (1) An electromagnetic means for switching a manual valve of an automatic transmission to each shift position; a controller for controlling the operation of the electromagnetic means; and a select switch for giving three commands to the controller about the operating position of the electromagnetic means; A first shift position display lamp and a second shift position display lamp provided corresponding to the shift positions; a shift position detection means for detecting each shift position of the automatic transmission; and a vehicle for detecting various driving states of the vehicle. a state detection means; a first display control means that receives an output from the shift position detection means and causes the first shift position display lamp to display the current shift position; and from the shift position detection means and the vehicle state detection means. determining means that receives an output from the determining means and determines a shift position that can be changed from the current shift position; and a second display that receives the output from the determination means and displays a shift position that can be changed on the second shift position display lamp. A transmission device for an automatic transmission, comprising: a control means;