JP3601225B2 - Automatic transmission gearbox - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a transmission for an automatic transmission, and more particularly to an improvement in a transmission having a manual mode.
[0002]
[Prior art]
In a transmission for an automatic transmission used in a vehicle, in addition to an automatic transmission mode in which a target gear ratio (or gear position) is determined according to driving conditions such as a vehicle speed VSP and a throttle opening TVO (or an accelerator opening), Similar to conventional manual transmissions, there are known several manual transmissions each having a manual mode for selecting a predetermined gear ratio (or gear position) according to a driver's gear change operation. As a transmission device of such an automatic transmission, for example, as shown in Chapter 2, page 48 of "Diamante 95-1 New Model Vehicle Description" (issued by Mitsubishi Motors Corporation), one shift lever can be used to set an automatic transmission mode. There is known a device that selectively switches a manual mode.
[0003]
This means that, as shown in FIG. 3, the shift gate 1 is set to an automatic shift mode including shift positions of “P”, “R”, “N”, “D”, “2”, and “1”. In addition, when the shift lever 3 is moved from the "D" range to the left side in the figure, the mode can be switched to the manual mode. The automatic shift modes “P”, “R”, “N”, “D”, “2”, and “1” in the figure are parking, reverse, neutral, drive, 2-speed fixed, and 1-speed fixed, respectively. Is shown.
[0004]
The shift gate 1 has a manual mode switch 7 for detecting that the automatic shift mode has been switched from the D range to the manual mode, and an upshift "+" or a downshift "" according to the movement of the shift lever 3 in the manual mode. An UP switch 8 and a DOWN switch 9 for detecting "-" are provided, and when the shift lever 3 is operated from the automatic transmission mode "D" range to the left side in the figure, the manual mode becomes the same as the conventional manual transmission. When the shift lever 3 is stroked to the "+" side in the figure, the UP switch 8 is turned on to instruct an upshift, and similarly, when the shift lever 3 is stroked to the "-" side, the DOWN switch 9 is turned on. Turns ON and commands a downshift, and the automatic transmission is relatively moved with respect to the current gear ratio (or shift position). To change the transmission ratio of 0, and performs so-called sequential shift.
[0005]
On the other hand, in the normal automatic shift mode, the inhibitor switch 4 interlocked with the shift lever 3 via the linkage 5 detects the shift position, and shifts the automatic transmission 10 according to a shift pattern preset in the shift control controller 2. The ratio is changed.
[0006]
[Problems to be solved by the invention]
However, in the transmission of the conventional automatic transmission, when the shift switch 3 is switched to the manual mode, the operation of the inhibitor switch 4 is canceled when switching from the automatic shift mode to the manual mode. A mechanism for releasing the connection between the transmission and the linkage 5 is required, which causes a problem that the structure of the transmission is complicated and the production cost is increased. Further, the manual mode switch 7 used in the manual mode is provided on the shift gate side. It is necessary to add three switches, the UP switch 8 and the DOWN switch 9, and there is a problem that the manufacturing cost is further increased.
[0007]
The present invention has been made in view of the above problems, and an object of the present invention is to provide a transmission for an automatic transmission in which a manual mode is added to an automatic transmission mode while suppressing an increase in manufacturing cost.
[0008]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided an automatic transmission position detecting means for detecting a range position of an automatic transmission mode having a plurality of ranges according to an operation of a shift lever, and an automatic transmission mode of an automatic transmission based on the operation of the shift lever. A shift mode switching means for selectively switching between a manual mode and detecting that the manual mode has been selected; and a manual shift command means for instructing an upshift or a downshift when the manual mode is selected. In a transmission for an automatic transmission,
The automatic shift position detecting means includes a manual range provided between two ranges of a D range and a fixed gear ratio range fixed to a predetermined gear ratio among the plurality of ranges in the automatic gear shift mode, Increases when the detected value of the automatic shift position detecting means is in the manual range and the detected value of the automatic shift position detecting means is in the D range from the state in which the manual mode is detected by the shift mode switching means. A shift is commanded, and a downshift is commanded when the gear ratio is in the fixed range .
[0010]
【The invention's effect】
Therefore, in the present invention , in the manual mode, the manual shift instructing means instructs an upshift or a downshift based on the detection value of the automatic shift position detecting means, so that the means for detecting the shift position in the manual mode becomes unnecessary. The number of parts can be reduced as compared with the conventional example, and a mechanism for releasing the connection between the shift lever and the automatic shift position detecting means as in the conventional example becomes unnecessary, thereby suppressing an increase in manufacturing cost. However, a manual mode can be added to the automatic transmission.
[0011]
A manual range is provided between the D range of the automatic shift mode and a fixed gear ratio range for fixing the gear ratio to a predetermined gear ratio. When the manual shift command means selects the manual mode, the manual shift command means detects the detected value of the automatic shift position detecting means. If the range is the D range, an upshift can be commanded, and if the gear ratio is in the fixed range, a downshift can be commanded. It is possible to add the manual mode while suppressing the transmission, and it is possible to provide the transmission of the automatic transmission having the manual mode at low cost.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
[0013]
FIG. 1 shows a transmission of an automatic transmission 10 provided with a manual mode in addition to the automatic transmission mode. An "H" -shaped shift gate 1 is provided with "2" (second speed fixed mode) of the conventional example. , A manual range “M” (hereinafter referred to as “M range”) is provided.
[0014]
The manual mode shift gate 1A (manual shift command means) on the left side in the figure has a manual shift mode switching means for detecting that the manual mode has been selected when the shift lever 3 moves to the left side in the figure. A mode switch 7 is provided, and in this manual mode shift gate 1A, the stroke amount to the upshift side of "+" in the figure is set substantially equal to the stroke of the automatic transmission mode from the M range to the D range. The stroke amount to the downshift side of "-" in the figure is set substantially equal to the stroke of one range from the M range in the automatic transmission mode.
[0015]
The lower end of the shift lever 3 is connected to an inhibitor switch 4 as an automatic shift position detecting means via a linkage 5, and the shift control controller 2 for controlling the automatic transmission 10 receives the signal from the inhibitor switch 4 and the manual mode switch 7. The shift control of the automatic transmission 10 is performed by selectively switching between the automatic shift mode and the manual mode based on the signal of (1).
[0016]
Here, an example of the control performed by the shift control controller 2 is shown in a flowchart of FIG. 2 and will be described in detail below with reference to this flowchart.
[0017]
First, in step S1, signals from the inhibitor switch 4 and the manual mode switch 7 are read, and then in step S2, it is determined whether or not the shift position of the inhibitor switch 4 is in the M range.
[0018]
If the shift position is not in the M range, the process proceeds to step S9 to perform shift control in the automatic shift mode. If the shift position is in the M range, the process further proceeds to step S3 to determine whether the manual mode switch 7 is ON. judge.
[0019]
When the manual mode switch 7 is OFF, the process proceeds to the automatic shift mode in step S9 in the same manner as described above, and when the manual mode switch 7 is ON, the process proceeds to manual mode control in step S4 and thereafter.
[0020]
In step S4, it is determined whether or not the inhibitor switch 4 is in the D range. In the case of the D range, this is a case where the shift lever 3 has been operated to "+" in FIG. 1, and the process proceeds to step S5. Perform an upshift.
[0021]
On the other hand, if the inhibitor switch 4 is not in the D range, the process proceeds to step S6, where it is determined whether or not the inhibitor switch 4 is in the 1 range. If "-" has been operated, the process proceeds to step S7 to perform a downshift, and if not, the process proceeds to step S8 to maintain the current shift position (speed ratio).
[0022]
In the automatic transmission mode performed in step S9, the transmission ratio of the automatic transmission 10 is changed based on the transmission pattern preset in the transmission control controller 2 according to the shift position detected by the inhibitor switch 4. .
[0023]
By performing the above-described steps S1 to S9 every predetermined time (for example, every several tens of msec), it is only necessary to provide the manual mode switch 7 in the shift gate 1, and the UP switch and DOWN switch of the conventional example are unnecessary. As a result, the number of parts can be reduced and the manufacturing cost can be reduced. Further, the shift lever 3 and the linkage 5 can be kept connected at all times. Since a mechanism for disconnecting the linkage 3 from the linkage 5 is not required, the structure of the transmission can be simplified, and an increase in manufacturing cost can be suppressed while adding a manual mode to the automatic transmission mode. is there.
[0024]
Further, the manual mode can be added by merely providing the manual range M and the shift gate 1A for upshift or downshift and the manual mode switch 7 in the automatic shift mode of the conventional shift gate 1. The transmission device of the automatic transmission having the above structure can be provided at low cost.
[Brief description of the drawings]
FIG. 1 is a schematic view of a transmission showing an embodiment of the present invention.
FIG. 2 is a flowchart illustrating an example of control performed by a shift control controller.
FIG. 3 is a schematic diagram of a conventional transmission.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Shift gate 2 Shift control controller 3 Shift lever 4 Inhibitor switch 5 Linkage 7 Manual mode switch 10 Automatic transmission

Claims (1)

Automatic shift position detecting means for detecting a range position of an automatic shift mode having a plurality of ranges according to an operation of a shift lever;
Shift mode switching means capable of selectively switching between an automatic shift mode and a manual mode of the automatic transmission based on the operation of the shift lever, and detecting that the manual mode has been selected;
And a manual shift commanding means for commanding an upshift or a downshift when the manual mode is selected.
The automatic shift position detecting means provides a manual range between two ranges of a D range and a fixed gear ratio range fixed to a predetermined gear ratio among the plurality of ranges of the automatic gear shift mode,
The manual shift instructing means changes the detection value of the automatic shift position detecting means to the D range from a state in which the detection value of the automatic shift position detecting means is in the manual range and the shift mode switching means detects the manual mode. A transmission for an automatic transmission, wherein an upshift is instructed when the speed ratio is reached, and a downshift is instructed when the speed ratio is in the fixed range .

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