JP2001206093A - Shift operation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of signal lines for judging shift position changing operation as much as possible. SOLUTION: In this shift operation device operated to selectively switch a plurality of shift positions for controlling a speed change gear 2 and a hydraulic controller 3 and having a wall section 9 and a ring dial 10 relatively and movably provided, the two contact points 11 and 12 provided on the wall section 9, the eight earth contact points 21-28, signal lines 15A and 16A, which are connected to the two contact points 11 and 12 and outputs signals for performing shift position changing operation based on the number of turns of conduction and non-conduction between the two contact points 11 and 12 and the earth contact points 21-28 and the order of conduction, and an electronic controller 4 determining shift position changing operation based on the signals from the signal lines 15A and 16A are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shift operation device for selecting one of a plurality of selected positions.

[0002]

2. Description of the Related Art As a controlled device mounted on a vehicle, for example, an automatic transmission, there is an automatic transmission having a gear transmission mechanism and a friction engagement device. In the automatic transmission having such a configuration, the gear ratio can be changed by controlling engagement / disengagement of the friction engagement device. In the automatic transmission having such a configuration, it is possible to selectively switch among a plurality of selected positions corresponding to a plurality of control modes, that is, shift positions. The range is different. The switching of the shift position is performed by operating a shift operation device.

An example of a shift operating device used for controlling such an automatic transmission is described in Japanese Patent Application Laid-Open No. Hei 6-28942. The dial-type shift switch described in this publication operates a rotatable dial to provide a P (parking) range, an R (reverse) range,
N (neutral) range, D (drive) range, S
Each shift position in the (second gear) range and the L (low gear) range can be selected. And R
When the range is selected, the reverse speed is set by the automatic transmission, and when the D range is selected, the speed ratio of the automatic transmission is controlled in the range of the first to third speeds or higher. , S range is selected, the speed ratio of the automatic transmission is controlled to the second speed or lower, and when the L range is selected, the speed ratio of the automatic transmission is fixed to the first speed.

In order to determine the range selected by operating the dial-type shift switch, switches are provided in a number corresponding to each range. Also,
Each switch is connected to the controller via a signal line. Then, with the rotation of the dial, the selection of the shift position is determined based on the shift position designation signal input to the controller via each signal line, and the shift position is actually changed based on the determination result. You.

[0005]

However, the shift operating device disclosed in the above publication is provided with a number of switches corresponding to each shift position, and the shift position is set based on the ON / OFF signals of these switches. The selection is configured to be determined. For this reason,
The same number of signal lines as the number of shift positions that can be set must be provided. As a result, there is a problem that the number of parts of the shift device increases and the manufacturing cost increases.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to reduce the number of signal lines for judging an operation of selectively changing a plurality of selected positions as much as possible. It is an object of the present invention to provide a shift operation device that can perform the operation.

[0007]

In order to achieve the above object, the invention according to claim 1 is operated to selectively switch a plurality of selected positions and is relatively movable in a predetermined direction. In the shift operation device including the configured first member and the second member, the shift operation device is provided on one of the first member and the second member, and corresponds to each of a plurality of selected positions. A plurality of position indicators arranged in a relative movement direction, and among the first member or the second member, a member not provided with the plurality of position indicators is arranged in the relative movement direction. And at least two detection units that output signals in response to relative positions with respect to the position indication units, and the position indication unit and the detection unit based on signals output from the at least two detection units. When And the relative movement direction, and is characterized in that it comprises a discrimination unit for discriminating the relative position of the said position indicating portion detection unit.

According to the first aspect of the present invention, a signal corresponding to a relative movement direction and a relative position of all of the plurality of position indicating units and at least two detecting units is output from the detecting unit. The selected position is determined by the determination device. Therefore, if at least two detectors are provided, the position to be selected can be determined, and the manufacturing cost can be reduced by reducing the number of components.

According to a second aspect of the present invention, in addition to the first aspect, the plurality of selected positions are set corresponding to a plurality of control modes for controlling a control target device mounted on the vehicle. The first member and the second member are configured to be relatively rotatable within a range of 360 degrees or more around a reference point, and when the vehicle is in a predetermined state, the detection unit A control mode change prohibition device that prohibits a control mode that is actually set for controlling the control target device from being changed to a control mode corresponding to the signal of the detection unit even when a signal is output from the control unit. It is characterized by having.

According to the second aspect of the invention, in addition to the same effect as the first aspect of the invention, the first member and the second member have no directivity in the direction of relative movement between the first member and the second member. It is difficult to unambiguously determine the correspondence between the relative position of the above and the control mode actually set. Further, the operation of returning the relative position between the first member and the second member to the position corresponding to the actually set control mode becomes unnecessary.

According to a third aspect of the present invention, in addition to the configuration of the second aspect, a display device for displaying the actually set control mode is provided.

According to the third aspect of the present invention, the same operation as that of the second aspect of the present invention occurs, and the control mode actually set is not changed to another control mode and is continued as it is. Is recognized by the driver.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described based on a specific example shown in the drawings. FIG. 1 is a block diagram illustrating a control circuit of a vehicle Ve having a shift operation device S1 according to the present invention, and FIG. 2 is a diagram illustrating a specific configuration example of a shift operation device. First, the vehicle shown in FIG. 1 has an engine 1 as a driving force source. As the engine 1, an internal combustion engine such as a gasoline engine, a diesel engine, or an LPG engine can be used. A transmission 2 is arranged on the output side of the engine 1.
The transmission 2 has a gear transmission mechanism (not shown) and a friction engagement device (not shown) such as a clutch or a brake. Further, a hydraulic control device 3 for controlling engagement / disengagement of the friction engagement device of the transmission 2 is provided. The hydraulic control device 3 is electrically controlled, and the hydraulic control device 3
Is equipped with various solenoid valves and the like (not shown).

The transmission 2 and the hydraulic control device 3
, A plurality of shift positions can be selectively set. In this embodiment, any one of a P (parking) position, an R (reverse) position, an N (neutral) position, and a D (drive) position can be selectively set. The P position and the R position are so-called non-drive positions. When this non-drive position is selected, even if torque is input to the input side of the transmission 2, this torque is not transmitted to the output side of the transmission 2.

On the other hand, the R position and the D position are so-called drive positions. When this drive position is selected, the torque on the input side of the transmission 2 is transmitted to the output side of the transmission 2. The range (ie, range) of the gear ratio set by the transmission 2 differs between the R position and the D position. First, at the R position, the speed ratio of the transmission 2 is fixed to a single speed ratio. On the other hand, in the D position, a plurality of speed ratios, for example, first to fourth speeds can be set.

An electronic control unit (ECU) 4 for controlling the hydraulic control unit 3 is provided. The electronic control unit 4 includes a microcomputer mainly including an arithmetic processing unit (CPU or MPU), a storage device (RAM and ROM), and an input / output interface. The electronic control unit 4 includes the transmission 2
A shift diagram for controlling the speed ratio of the vehicle is stored.
This shift diagram is for controlling the speed ratio of the transmission 2 using the state of the vehicle, for example, the vehicle speed and the accelerator opening as parameters.

To the electronic control unit 4, a signal of an accelerator opening sensor 5, a signal of an ignition switch 6, a signal of a foot brake switch 7, a signal of an output shaft speed sensor 8 of the transmission 2, and the like are input. ing. The vehicle speed is obtained based on the signal of the output shaft speed sensor 8. Then, based on the signal input to the electronic control unit 4, a signal to the hydraulic control unit 3 is output, and the transmission 2
Is configured to be controlled. When the D position is selected, the state of the vehicle is determined by the electronic control unit 4, and the gear ratio of the transmission 2 is automatically controlled by the hydraulic control unit 3.

Next, a shift operation device S1 for selectively changing each shift position will be described with reference to FIG. The shift operation device S1 can be attached to, for example, an instrument panel (not shown). The shift operation device S1 includes a fixedly provided wall 9
And a cylindrical projection 9A protruding from the wall 9 toward the driver's seat side, and a ring dial 10 attached to the outer periphery of the projection 9A. The wall portion 9 and the ring dial 10 are configured to be relatively rotatable in a range of 360 degrees or more around a reference point A1 set at the center of the protrusion 9A.

On the wall 9 side, there are provided two or more contacts and less than the number of shift positions.
In this embodiment, two contacts 11 and 12 are provided. The two contact points 11 and 12 are arranged on the same circumference centering on the reference point A1. That is, two contacts 1
Reference numerals 1 and 12 are arranged along the direction of relative movement between the wall 9 and the ring dial 10. Also, two contacts 11,
Numeral 12 is connected in parallel to the anode of the power supply 13, and the cathode of the power supply 13 is connected to the ground 14. Further, a voltage detection circuit 1 for separately detecting a voltage between the two contacts 11, 12 and the anode of the power supply 13
5 and 16 are provided, and the detection signals of the voltage detection circuits 15 and 16 are configured to be input to the electronic control unit 4 via the signal lines 15A and 16A.

Further, the ring dial 1 on the wall 9
0, four shift position lamps 17,
To 20 are provided. Here, the shift position lamp 17 corresponds to the P position, the shift position lamp 18 corresponds to the R position, the shift position lamp 19 corresponds to the N position, and the shift position lamp 20 corresponds to the D position. The four shift position lamps 17, to 20 connect the reference point A1 to each of the shift position lamps 17, 20 and have an angle of approximately 45 degrees between mutually adjacent line segments (not shown). It is located at a position. The turning on and off of these four shift position lamps 17 to 20 are controlled by the electronic control unit 4.

On the other hand, the ring dial 10 is formed in a cylindrical shape, and a plurality of, specifically, ground contacts equal to or more than the number of all shift positions are provided at the open end of the cylindrical portion 10A of the ring dial 10. ing. In this embodiment, eight earth contacts 21 to 28 are provided. The ground contacts 21 to 28 are arranged on the same circumference centering on the reference point A1. That is, the ground contacts 21 to 28 are arranged along the direction of relative movement between the wall 9 and the ring dial 10. Further, each of the ground contacts 21 to 28 is connected to the reference point A1 and each of the ground contacts 21 to.
28, and adjacent to each other (not shown)
They are arranged at positions where the angle between them is approximately 45 degrees. Further, each of the ground contacts 21 and 28 is connected to the ground 14.
It is connected to the.

The shift operation device S configured as described above
In 1, the rotation of the ring dial 10 allows the two contacts 11 and 12 and the ground contacts 21 to 28 to be individually in a conductive state and a non-conductive state. In a state where the two contacts 11 and 12 are located between the adjacent ground contacts in the circumferential direction, when the operation force on the ring dial 10 is not generated, the rotation of the ring dial 10 is restricted. (Not shown) is provided.

Here, the correspondence between the configuration of the embodiment and the configuration of the present invention will be described. That is, the transmission 2 and the hydraulic control device 3 correspond to the control target device of the present invention, each shift position corresponds to a plurality of selected positions of the present invention, and the control content of the gear ratio at each shift position corresponds to the present invention. The wall 9 and the ring dial 10 correspond to a first member and a second member of the present invention, and the ground contacts 21 to 28 correspond to a position indicating unit of the present invention. The electronic control unit 4 corresponds to the discriminating device and the control mode change prohibiting device of the present invention, and the shift position lamps 11, 14 correspond to the display device of the present invention. I do.

Next, the operation and control of the vehicle Ve will be described. First, when an ignition key (not shown) is turned on, a shift position lamp corresponding to an actually set shift position among the shift position lamps 11, 14 is turned on. Thereafter, the switching operation of the shift position is basically performed based on the operation of the ring dial 10.

Here, the driver is looking at the shift position lamps 11 to 14, and
The switching operation of the shift position can be performed based on the rotation direction and the rotation amount of. For example, a case where the shift position is switched to the D position while the N position is actually set and the shift position lamp 19 is lit will be described.
In this case, the ring dial 10 is rotated clockwise.

First, when the N position is set, the two contacts 11, 12 and the ground contacts 21,.
28 are in the positional relationship shown in FIG. Next, when the ring dial 10 is rotated clockwise, the ground contact 22 and the contact 10 are electrically connected (direct contact).
2 and the contact 11 are conducted, and thereafter, the ground contact 22 and the contacts 11 and 12 are turned off.

When the ring dial 10 is operated and the ground contacts 22 and the contacts 11 and 12 are electrically connected as described above, an electric circuit corresponding to the conductive one of the contacts 11 and 12 is provided. Current flows through Since the voltage of each electric circuit is detected by the voltage detection circuits 15 and 16,
Based on the change in the voltage, the number of times that both of the two contacts 11 and 12 are conducted to the ground contact and the order in which the contacts 11 and 12 are conducted to one ground contact are determined. And one contact for each ground contact
Ring dial 10 based on the order in which
Is determined, and the amount of rotation of the ring dial 10 is determined based on the number of times that both the contacts 11 and 12 are electrically connected to the ground contact.

On the other hand, a case where the position is switched from the N position to the R position or the P position will be described. In this case, the ring dial 10 is rotated counterclockwise. Then, the ground contact 23 and the contact 12 are conducted, then the ground contact 23 and the contact 11 are conducted, and thereafter, the ground contact 23 and the contacts 11 and 12 become non-conductive. When the ring dial 10 is operated as described above, the respective ground contacts and the respective contacts 11 and 12 are sequentially conducted, and the rotation amount of the ring dial 10 is determined in the same manner as described above.

As described above, based on the determination result of the rotation direction and the rotation amount of the ring dial 10, the driver
It is determined which shift position is being changed from the current shift position. Then, the shift position lamp before the change is turned off, the shift position lamp corresponding to the shift position after the change is turned on, and the current shift position is switched to the shift position corresponding to the change operation.

In this embodiment, the wall 9 and the ring dial 10 are configured to be rotatable relative to each other in a range of 360 or more around the reference point A1. Therefore, the ring dial 10 can be further rotated clockwise from the state where the D position is actually set. When such an operation is performed, the ground contacts and the two contacts 11 and 12 become conductive and non-conductive in the same manner as described above in the order of the ground contacts 21, 27. The number of times that the two contacts 11 and 12 have become conductive to each ground contact and the order in which the two contacts 11 and 12 have been rendered conductive to each ground contact are canceled, and the D position is maintained. .

For the same reason as described above, it is possible to further rotate the ring dial 10 counterclockwise from the state where the P position is actually set. By performing such an operation, the ground contacts 24, 25,.
In this order, conduction and non-conduction between each ground contact and the two contacts 12 and 11 are repeated. In this case, the shift position corresponding to the conduction sequence of the two contacts 12 and 11 with respect to each ground contact is changed. Is not performed, and the P position is continued.

As described above, in this embodiment,
The relative positional relationship between each ground contact and the two contacts 11 and 12 is in a predetermined state, specifically, the number of times of conduction / non-conduction between each ground contact and the two contacts 11 and 12, and , The selection state of the shift position is determined. In other words, only by providing a number less than the number of shift positions that can be set, specifically, by providing only two signal lines 15A and 16A, it is possible to determine a change in the shift position and to save signal wiring. Therefore, the number of parts is reduced, and the manufacturing cost of the shift operation device S1 can be suppressed.

In this embodiment, the vehicle Ve
Is in a predetermined state, the ring dial 10
Thus, even when a shift position change operation occurs, the electronic control unit 4 can cancel the shift position change instruction and perform control to continue the currently set shift position, that is, cancel control.

As an example of the cancel control, the electronic control unit 4 controls the shift position even if the shift position is changed when the D position is actually set and the vehicle Ve is running. A control for canceling the shift position change instruction and continuing the D position is exemplified. At the time of this cancel control, the shift position lamp 2 corresponding to the D position
0 is continuously lit. The driver can be notified that the cancel control is being executed by a cancel control display lamp (not shown) or the like. As described above, by providing the cancel control display lamp, it can be confirmed that the situation where the shift position cannot be changed by operating the ring dial 10 is not a failure of the system.
The driver can recognize.

By the way, if the cancellation control is performed, the operation content of the ring dial 10 will be different from the actually set shift position. However, in this embodiment, the wall 9 and the ring dial 10 are
It is configured to be relatively rotatable in a range of 60 degrees or more. That is, there is no directivity in the operation direction of the ring dial 10,
The configuration is such that it is difficult to uniquely determine the correspondence between the operation position of the ring dial 10 and the actually set shift position.

For this reason, even if a difference (in other words, a mismatch) occurs in the correspondence between the operation position of the ring dial 10 and the actually set shift position due to the cancel control, the driver has a particularly uncomfortable feeling. Nothing. For this reason, the operation of returning the ring dial 10 to the position corresponding to the actually set shift position becomes unnecessary, and the operation burdened by the driver can be reduced. In addition, ring dial 1
In order to avoid a situation in which the shift position is not actually changed by operating 0, the ring dial 10
There is no need to provide a lock mechanism or the like for preventing the rotation of the shift operation device in advance, and the structure of the shift operation device S1 can be simplified.

Next, another configuration example of this embodiment will be described. First, the two contacts 11 and 12 can be arranged on the wall portion 9 so as to be located between ground terminals that are not adjacent to each other in the off state. That is, in this embodiment, the conduction and non-conduction of the two contacts 11 and 12 with respect to one contact are different from each other without the conduction of one ground contact and the two contacts 11 and 12 at the same time. It is only necessary that two contacts 11, 12 are arranged so as to generate the above.

Further, it is also possible to provide a plurality of sets of two contacts 11, 12 with one set of two contacts 11, 12. The plural sets of contacts 11 and 12 are arranged on the same circumference centered on the reference point A1 and at different phases in the circumferential direction. As described above, when a plurality of sets of the two contacts 11 and 12 are provided, even if one set of the contacts 11 and 12 fails, the order of conduction and non-conduction of the other normally functioning contacts 11 and 12 is maintained. Thus, the intention to change the shift position can be determined.

Further, the number of contacts provided on the wall 9 can be three. With this configuration, either one
Even if one of the contacts fails, the direction and amount of rotation of the ring dial 10 can be determined from the number of times of conduction / non-conduction of the other two contacts and the order of conduction.

Further, two contacts 11 and 12 may be provided on the ring dial 10 side, and the ground contacts 21 and 28 may be provided on the wall 9 side. In this case, the two contacts 11 and 12 are arranged on the same circumference centered on the reference point A1, and the ground contacts 21 and 28 are arranged on the same circumference centered on the reference point A1. .

Further, the wall 9 may be configured to be rotatable, and the ring dial 10 may be fixedly provided. Furthermore, shift position lamps 17, 20
May be arranged on the projection 9A of the wall 9.

Further, another control example of this embodiment will be described. When the P position is actually set, the control corresponding to the shift position change operation can be performed only when the foot brake switch 7 is turned on. Further, in a state where the vehicle Ve is traveling at a predetermined vehicle speed or more, even if the intention to change the current shift position to the R position is generated by operating the ring dial 10, the shift position change instruction is canceled. , The current shift position can be continued.
When such control is performed, the above-mentioned predetermined vehicle speed is stored in the electronic control unit 4 in advance.

In this embodiment, the position indicating section and the detecting section are always in a non-contact state, and a functional component or a functional material which outputs a signal from the detecting section in response to the relative position. Can also be configured. Specific examples of the combination of the position indication unit and the detection unit include a combination of a metal piece and an eddy current sensor, a combination of a metal piece and a capacitance type proximity sensor, a combination of a reflection member and a photo interrupter, and a reflection member. And a laser indicator.

This embodiment can also be applied to a shift operating device in which the shift lever is configured to swing around a shaft as a fulcrum within a predetermined angle range. In this case, one of the shift lever and the bracket supporting the shift lever is provided with the above two contacts, and the other is provided with a ground contact. The shift lever and the bracket are the first member and the second member of the present invention.
It corresponds to a member.

Further, in this embodiment, an electric motor can be mounted as a driving force source instead of the engine. Further, an engine and an electric motor can be mounted as a driving force source. Also, in this embodiment,
As the transmission, a continuously variable transmission that can control the gear ratio continuously (steplessly) may be used. Also, the display device may include a buzzer instead of the shift position lamp,
A display device having a sound output function such as a chime can also be used.

[0046]

As described above, according to the first aspect of the present invention, signals corresponding to the relative movement directions and relative positions of all the plurality of position indicating units and at least two detecting units are output from the detecting units. Based on this signal, the selected position is determined by the determination device. Therefore, if at least two detectors are provided, the selected position can be determined,
Manufacturing costs can be reduced by reducing the number of parts.

According to the second aspect of the invention, in addition to the same effects as the first aspect of the invention, there is no directivity in the relative movement direction between the first member and the second member, and the first member and the second member are not moved. It is difficult to uniquely determine the correspondence between the relative position with respect to the member and the actually set control mode. Further, the operation of returning the relative position between the first member and the second member to the position corresponding to the actually set control mode becomes unnecessary. Therefore,
Driver operation can be reduced. Further, in order to avoid a situation in which the control mode is not actually changed even when the first member and the second member are relatively moved, a lock mechanism or the like for preventing relative rotation between the members needs to be provided in advance. Therefore, the structure of the shift operation device can be simplified.

According to the third aspect of the present invention, the same operation as that of the second aspect of the present invention occurs, and the actually set control mode is continued without being changed to another control mode. Is recognized by the driver. Therefore, the driver is prevented from feeling uncomfortable when the control mode is not switched.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a control circuit of a vehicle to which the present invention is applied.

FIG. 2 is a schematic side view of a shift operation device according to the present invention.

[Explanation of symbols]

2: transmission, 3: hydraulic control unit, 4: electronic control unit, 9: panel, 10: ring dial, 11,
12 ... contact point, 15A, 16A ... signal line, 17, ~ 2
0: shift position lamp, 21, to 28: ground contact, S1: shift operation device, Ve: vehicle.

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hideo Tomomatsu 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Corporation F-term (reference) 3D036 CA04 CA10 CA15 GH05 GJ01 3D040 AA01 AA10 AA33 AA40 AB01 AC36 AD05

Claims (3)

[Claims] 1. A shift operation device comprising: a first member and a second member that are operated to selectively switch a plurality of selected positions and that are configured to be relatively movable in a predetermined direction. Provided on one of the member or the second member, and corresponding to each of the plurality of selected positions,
A plurality of position indicating sections arranged in the relative movement direction; and, in the first member or the second member, a member not provided with the plurality of position indicating sections, arranged in the relative movement direction. And at least two detection units that output signals in response to relative positions with respect to the position indication units, and the position indication unit and the detection based on signals output from the at least two detection units. A shift operation device comprising: a discriminating device for discriminating a relative movement direction with respect to a unit and a relative position between the position indicating unit and the detection unit. 2. The plurality of selected positions are set in accordance with a plurality of control modes for controlling a control target device mounted on a vehicle, and the first member and the second member include: It is configured to be relatively rotatable in a range of 360 degrees or more around the reference point, and when the vehicle is in a predetermined state, even when a signal is output from the detection unit, the control target device is The control mode change prohibition device that prohibits changing a control mode actually set for control to a control mode corresponding to a signal of the detection unit is provided. Shift operation device. 3. The apparatus according to claim 2, further comprising a display device for displaying the actually set control mode.
3. The shift operating device according to claim 1.