JPH11141681A - Shift lever position display device for manually operated transmission - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shift lever position displaying device which can easily be mounted on and removed from a vehicle after delivery. SOLUTION: A lever operation sensor 22 is composed of a Y-direction shift sensor 26 and X-direction shift sensor 24 consisting of inclining angle sensor and is removably mounted on a shift lever 14 through a bracket 20. A correction amount sensor 30 composed of an X-direction correcting amount sensor 32 and a Y-direction correcting amount sensor 34 is installed on the floor surface 10. A shift position judging device 28 takes in the signals of the sensors 22 and 30, determines the shift position of the lever 14 by removing the influence of the acceleration at inclining, revolving, etc., of the vehicle itself from the output signal of the lever operation sensor 22, and lights up the numeral or the letter R which indicates the shift position of a shift position display 40 furnished in the cabin.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shift lever position display device of a manual transmission which detects and displays a shift position of a shift lever for manually operating a transmission of a vehicle.

[0002]

2. Description of the Related Art Japanese Utility Model Application No. 58-78581 (Japanese Utility Model Application Laid-Open No. 59-78581)
In the specification, there is proposed a gear position display device for displaying a gear shift position on a change lever unit of a finger control power operating device for operating a manual transmission for a large vehicle. This shift position display device forms a plurality of select switches and shift switches driven by a change lever in a change lever unit, and an electroluminescent body provided on a cover of the change lever unit in accordance with a driving state of these switches. It lights up to show the position of the change lever.

[0003]

Incidentally, it is conceivable that a novice driver or the like unfamiliar with driving a vehicle may not know the shift position of the shift lever during driving. For this reason, if there is a device that can display the shift position of the shift lever that can be easily attached and removed as needed after purchasing the vehicle, even a beginner does not need to worry about the position of the shift lever and can drive with peace of mind It can be convenient.

[0004] However, the select switch and the shift switch of the above-mentioned shift position display device have a function of outputting a shift command to a gear shift unit in response to an operation of a change lever, and are essential for driving a vehicle. It is built into the change lever unit when assembling the vehicle and is not retrofitted and cannot be removed. The present invention has been made in view of the above-described demands, and has as its object to provide a shift lever position display device of a manual transmission that can be easily attached to and detached from a purchased vehicle.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, a shift lever position display device for a manual transmission according to the present invention is detachably mounted on a shift lever of a vehicle so that the inclination of the shift lever can be adjusted. Lever operation detecting means for detecting the inclination direction; shift position determining means for obtaining a shift position of the shift lever based on a detection signal of the lever operation detecting means; and a shift position obtained by the shift position determining means. And detachable display means for displaying in the vehicle cabin.

[0006] The lever operation detecting means can be formed by a tilt angle sensor such as a pair of clinometers and gyros. In this case, the shift position determining means includes:
A correction amount detection unit that is provided detachably provided on the vehicle and detects a tilt of the vehicle and an acceleration acting on the vehicle,
It is desirable to determine the shift position of the shift lever based on the output signals of the correction amount detecting means and the lever operation detecting means. The correction amount detecting means can also be formed by the inclination angle sensor.

[0007]

According to the present invention having the above-described structure, lever operation detecting means for detecting the inclination and the inclination direction of the shift lever;
The display means for displaying the shift position of the shift lever is detachable, so it can be installed and removed as needed after purchasing the vehicle, and even if it is a novice driver who is unfamiliar with driving, it will display The position of the shift lever can be easily confirmed through the means, the driver can operate the vehicle without worrying about the position of the shift lever, and the number of accidents can be reduced.

The lever operation detecting means is formed by an inclination angle sensor, and the shift position judging means is provided detachably on the vehicle and detects a correction amount for detecting the inclination of the vehicle and the magnitude of the acceleration acting on the vehicle. When the shift position of the shift lever is determined based on the output signals of the correction amount detection means and the lever operation detection means,
Not only is the structure of the lever operation detecting means simple and low-cost, and it is easy to attach and detach, but also the influence of the inclination and acceleration of the vehicle can be eliminated, and the shift position of the shift lever can be accurately obtained.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a shift lever position display device for a manual transmission according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is an explanatory diagram of a configuration of a shift lever position display device of a manual transmission according to an embodiment of the present invention, which is applied to a floor shift type manual transmission. In FIG. 1, a console 12 is provided on a floor 10 in a vehicle cabin, and a shift lever 1 for operating a manual transmission (not shown) is provided in the console 12.
4 are arranged. The shift lever 14 is connected to the shift knob 1
The upper end where the screw 6 is screwed penetrates the boot 18 attached to the console 12 and is exposed in the vehicle interior. A lever operation detector (lever operation detection means) 22 detachably attached to the shift lever 14 via a bracket 20 is provided inside the boot 18.

The lever operation detector 22 detects the inclination of the shift lever 14 with respect to the neutral position (N position) and the direction of the inclination when the shift lever 14 is operated by the driver. Is mounted vertically to the shift lever 14, and is constituted by a pair of inclination angle sensors such as a clinometer. That is, the lever operation detector 22 includes an X-direction shift sensor 24 that detects an inclination in the X direction, which is the left-right direction of the vehicle, and a Y-direction shift sensor 26, which detects an inclination in the Y direction that is the front-back direction of the vehicle. ing. The output signals of the direction shift sensors 24 and 26 are input to a shift position determining unit 28 as a shift position determining unit.

The output signals of the X-direction shift sensor 24 and the Y-direction shift sensor 26 change linearly with the inclination angle of the shift lever 14, as shown in FIG. That is, when the shift lever 14 inclines to the first speed position and the second speed position on the left (+ X) side from the neutral position, the output voltage of the X-direction shift sensor 24 becomes as shown in FIG.
As shown in (1), when it is higher than the neutral position, and when it is inclined in the opposite -X direction, that is, at the fifth speed position and the reverse position, it changes linearly so as to be lower than the neutral position. Similarly, as shown in FIG. 2B, the output voltage of the Y-direction shift sensor 26 increases when the shift lever 14 is tilted rearward (+ Y) from the neutral position toward the vehicle rear (+ Y), and the output voltage increases in front of the vehicle (−). The output voltage decreases when tilted to the Y) side. Then, as described later, the shift position of the shift lever 14 can be obtained by combining the output states of the direction shift sensors 24 and 26.

On the other hand, on the floor 10 in the console 12,
The correction amount detector 30 is detachably provided so as to be horizontal with respect to the vehicle body. As will be described in detail later, the correction amount detector 30 measures the magnitude of the inclination of the vehicle itself on a slope or the like, and the acceleration (inertial force) of the vehicle when the vehicle starts, brakes, or curves (turns). It detects the magnitude and corrects the effect of the output signal of the lever operation detector 22 due to the inclination and acceleration of the vehicle. The output signal is input to the shift position determination unit 28. Similarly to the lever operation detector 22, the correction amount detector 30 is composed of a pair of inclination angle sensors, and outputs an X-direction correction signal in the X-direction correction amount sensor 32 and the Y-direction correction amount sensor 34. It consists of

The shift position determiner 28 is provided with a shift signal output circuit 36 to which the output signals of the lever operation detector 22 and the correction amount detector 30 are input, and a shift lever 14 based on the output signal of the shift signal output circuit 36. And a shift position judging circuit 38 for calculating the shift position. And
The output side of the shift position judging circuit 38 is connected to a shift position display 40 as a display means. The shift position indicator 40 is disposed so as to be detachable at a position that is easy for the driver to see, for example, near the steering wheel 46 of the dashboard 42 as shown in FIG. Then, on the shift position indicator 40, the numerals "1" to "5" and the characters "R" are arranged so as to correspond to the first to fifth speed positions and the reverse (R) position of the shift lever 14. Thus, when the shift lever 14 is shifted, the corresponding numeral or letter R is illuminated.

The shift signal output circuit 36 of the shift position judging device 28 is constructed as shown in FIG. 4, and comprises an X-direction shift sensor 24, a Y-direction shift sensor 26, an X-direction correction amount sensor 32, and a Y-direction shift sensor. The differential amplifier circuits 50a to 50d corresponding to the respective correction amount sensors 34 are provided.
Each of the differential amplifier circuits 50a to 50d has substantially the same structure, and has operational amplifiers 52a to 52d, respectively. The operational amplifiers 52a to 52d are provided with feedback resistors 5
The output is input to the inverting input terminal via 4a to 54d. The output signal of the X-direction shift sensor 24 is input to the inverting input terminal of the operational amplifier 52a via the resistor 56a. Further, the non-inverting input terminal of the operational amplifier 52a has divided resistors 58a, 6
The output signal of the X-direction correction amount sensor 32 divided by Oa is input.

On the other hand, the output signal of the X-direction correction amount sensor 32 is input to the inverting input terminal of the operational amplifier 52c via the resistor 56c. The non-inverting input terminal of the operational amplifier 52c has divided resistors 58c, 60c
The output signal of the X-direction shift sensor 24 divided by the above is input. Y direction shift sensor 26
Is input to the inverting input terminal of the operational amplifier 52b via the resistor 56b, and the divided resistors 58d,
The signal is divided by 0d and input to the non-inverting input terminal of the operational amplifier 52d. The output signal of the Y-direction correction amount sensor 34 is input to the inverting input terminal of the operational amplifier 52d via the resistor 56d and is also divided by the dividing resistors 58b and 60b and input to the non-inverting input terminal of the operational amplifier 52b. .

On the output side of each of the operational amplifiers 52a to 52d, comparators 62a to 62d are provided, respectively. Each of the comparators 62a to 62d has the same configuration,
A resistor 66 is connected to the non-inverting input terminals of the operational amplifiers 64a to 64d.
a to 66d, corresponding differential amplifier circuits 50a to 50d
The output of d is input. A reference voltage having a predetermined value is input to the inverting input terminals of the operational amplifiers 64a to 64d.

As will be described in detail later, the comparator 62a
"H" is output when the position of the shift lever 14 is shifted to fifth speed or reverse. The comparator 62c outputs "H" when the position of the shift lever 14 is the first speed or the second speed, and the comparator 62b outputs "H" when the shift lever 14 is the first speed, the third speed, or the fifth speed. H, and the comparator 62d outputs "H" when the shift lever 14 is in the second speed, the fourth speed, or the reverse.

Further, the shift signal output circuit 36 is provided with an X-direction intermediate position detection circuit 68 to which the outputs of the comparators 62c and 62a are input. The X-direction intermediate position detection circuit 68 includes four NAND circuits 70, 72, 7
4 and 76. Both input terminals of the NAND circuit 70 are connected to the output side of the comparator 62c.
Both input terminals of the D circuit 72 are connected to the output side of the comparator 64a. The output sides of the NAND circuits 70 and 72 are connected to the input side of the NAND circuit 74, respectively. The output of the NAND circuit 74 is output from the NAND circuit 7.
6 are input to both input terminals. The output of the NAND circuit 76 is the X-direction intermediate position detection circuit 6
8, and outputs "H" when the shift lever 14 is in third speed, fourth speed, or neutral.

As shown in FIG. 5, the shift position judging circuit 38 includes a first speed judging section 80, a second speed judging section 82, a third speed judging section 84, and a fourth speed judging section each constituted by NAND circuits 78a to 78f. A section 86, a fifth speed determining section 88, and a reverse determining section (R determining section) 90 are provided. And
Outputs of the NAND circuits 78a to 78f are connected to resistors 92a to 92f, respectively.
The transistors 94a to 94f are connected to the bases of the transistors 94a to 94f via 92f, and output "L" to drive the transistors 94a to 94f so that the light emitting diodes 96a to 96f connected to the collectors of the transistors are turned on. It is.

The outputs of the comparators 62c and 62b are input to the input terminals of the NAND circuit 78a.
The comparators 62c and 62d are connected to the input terminals of the circuit 78b.
The output of the comparator 62b and the output of the X-direction intermediate position detection circuit 68 are input to the input terminal of the NAND circuit 78c, and the comparator 62d and the X-direction intermediate position detection circuit 68 are input to the input terminal of the NAND circuit 78d. Is input and NAND
The outputs of the comparators 62b and 62c are input to the input terminal of the circuit 78e, and the comparator 6b is input to the input terminal of the NAND circuit 78f.
Outputs 2c and 62d are input.

The operation of the embodiment configured as described above is as follows. When the shift lever 14 is in the neutral position (N position), as shown in FIG. 6, both the X-direction shift sensor 24 and the Y-direction shift sensor 26 constituting the lever operation detector 22 are inclined. Not held horizontally. Then, for example, when the shift lever 14 is moved to the first speed position, the X-direction shift sensor 24 moves to the left (+ X direction) as indicated by the arrow in FIG.
And the Y-direction shift sensor 26 is inclined forward (−Y direction). Further, when the shift lever 14 is moved to the third speed position, the X-direction shift sensor 24 does not tilt, and only the Y-direction shift sensor 26 tilts forward.
Is shifted to the reverse position, the X-direction shift sensor 24 tilts rightward (−X direction), and the Y-direction shift sensor 26 tilts backward (+ Y direction).

X by operating the shift lever 14
The outputs of the direction shift sensor 24, the X direction correction amount sensor 32, and the differential amplifier circuits 50a and 50c are as shown in FIG. In this embodiment, since each of the differential amplifier circuits operates with a single power supply, the output of the differential amplifier circuit is zero, not negative, at least. Shift lever 1
If 4 is in the neutral position and the third speed or the fourth speed position, the output of the X-direction shift sensor 24 is a predetermined voltage V ₀ as shown in FIG. 7 (1). Further, when the vehicle is or inclined in the lateral direction, not a curve, even if the output of the X direction correction sensor 32 becomes to V ₀ as shown in FIG. (2).

For example, if the vehicle turns left or the vehicle body leans to the right while driving at the third or fourth speed,
The output of the X-direction shift sensor 24 input to the inverting input terminal of the differential amplifier circuit 50a is represented by a in FIG. 7A due to the influence of the acceleration (inertial force) due to the turning of the vehicle and the inclination of the vehicle. Then, the value becomes larger than V ₀ . However, the output of the X-direction correction amount sensor 32 to be input to the non-inverting input terminal as a reference value of the differential amplifier circuit 50a is also to become greater than V ₀ as shown in b of FIG. 2, a differential amplifier Circuit 5
The output of 0a is maintained at the minimum value “0” as shown in FIG. 7 (4). Similarly, the output of the X-direction correction amount sensor 32 is input to the inverting input terminal, and X is input to the non-inverting input terminal.
The differential amplifier 50 to which the output of the direction shift sensor 24 is input
The output of c is also maintained at “0” (see FIG. 7C).

On the other hand, when the shift lever 14 is shifted to the first or second speed position inclined in the + X direction, the output of the X-direction shift sensor 24 becomes _VH , and this _VH is the inverted input of the differential amplifier circuit 50a. And a non-inverting input terminal of the differential amplifier circuit 50b. For this reason, the output of the differential amplifier circuit 50a is maintained in the minimum state. However, in the differential amplifier circuit 50c, the output of the X-direction shift sensor 24 input to the non-inverting input terminal is larger than the output of the X-direction correction amount sensor 32 input to the inverting input terminal.
It becomes maximum as shown in (3). At this time, even if the vehicle turns left and right, the outputs of the differential amplifier circuits 50a and 50c are maintained at the minimum and maximum without being affected by the turn as described above. Then, when the shift lever 14 is moved to the fifth speed or the reverse position where the shift lever 14 is inclined in the -X direction, the output of the X-direction shift sensor 24 becomes _VL , and the output of the differential amplifier circuit 50a becomes As shown in FIG.
The output of c is kept to a minimum.

As described above, the output of the differential amplifier circuit 50a becomes maximum when the shift lever 14 is at the fifth speed position or the reverse position, and becomes minimum at other times. The comparator 62a provided on the output side of the differential amplifier circuit 50a outputs "H" when the shift lever 14 is in the fifth speed position or the reverse position. Similarly, the comparator 62c outputs "H" when the shift lever 14 is in the first or second speed position, and the comparator 62b outputs
Outputs "H" when the shift lever 14 is in the first, third or fifth speed position, and the comparator 62d outputs "H" when the shift lever 14 is in the second, fourth or reverse speed position. The Y-direction correction amount sensor 34 corrects the output signal of the Y-direction shift sensor 26 due to the influence of the inclination of the vehicle in the front-back direction or the acceleration at the time of starting or braking.

The X-direction intermediate position detecting circuit 68 outputs "H" when the shift lever 14 is in the third speed, fourth speed or neutral position. That is, when the shift lever 14 is in the first or second speed position, the output of the comparator 62c input to the NAND circuit 70 becomes “H”, so that the output of the NAND circuit 70 becomes “L” and the NAND circuit 7
4 becomes "H" and the output of the NAND circuit 76 becomes "L". When the position of the shift lever 14 is at the fifth speed or reverse, the output of the comparator 62a input to the NAND circuit 72 becomes “H” and the NAND circuit 72
Becomes "L", so that the output of the NAND circuit 76 becomes "L" as described above. And shift lever 14
Is in the third-speed, fourth-speed, or neutral position, the inputs of the NAND circuits 70 and 72 both become "L" and their outputs become "H", and the NAND circuit 7
4 becomes "L" and the output of the NAND circuit 76 becomes "H".

When the shift lever 14 is moved to the first speed position, the comparators 62c and 62 input to the NAND circuit 78a constituting the first speed determination unit 80 of the shift determination circuit 38.
The output of “b” becomes “H”, the output of the NAND circuit 78a becomes “L”, and drives the transistor 94a. For this reason, the light emitting diode 96a arranged at the position corresponding to "1" of the shift position indicator 40 shown in FIG. 1 is turned on.
When the shift lever 14 is moved to the reverse position, the comparators 62c and 62 input to the NAND circuit 78f.
The output of d becomes “H”, “L” is output from the reverse determination unit 90, and the light emitting diode 96f arranged at the “R” position of the shift position indicator 40 lights up. The same applies to the case where the shift lever 14 is shifted to the fourth to fifth speed positions.

As a result, the driver can change the shift position indicator 4
0, the user can easily recognize the position of the shift lever 14, even if the driver is unfamiliar with driving, such as a novice driver, without paying attention to the shift position of the shift lever 14. It is possible to drive with peace of mind and prevent accidents from occurring. Moreover, in the embodiment, since the lever operation detector 22, the correction amount detector 30, and the shift position indicator 40 are detachable, they can be easily attached and detached as necessary after purchasing the vehicle. is there. Further, the correction amount detector 30 is attached to the floor surface 10, and the signal output from the lever operation detector 22 attached to the shift lever 14 is affected by acceleration at the time of starting, braking, turning, etc. of the vehicle, and the vehicle on a hill. Since the influence of the inclination of itself is removed, the shift position of the shift lever 14 can be accurately recognized.

In the above-described embodiment, the case where the clinometer is used as the inclination angle sensor has been described, but a gyro or the like may be used. Further, in the above-described embodiment, the case where the present invention is applied to the floor shift method is described, but the present invention can also be applied to a column shift method in which a shift lever is provided on a steering column.

[0030]

As described above, according to the present invention, the lever operation detecting means for detecting the inclination and the inclination direction of the shift lever and the display means for displaying the shift position of the shift lever can be detachably attached. As a result, it can be installed and removed as necessary after purchasing the vehicle, and even a novice driver who is unfamiliar with driving can easily check the shift lever position via the display means. It is possible to drive safely without worrying about the position of the shift lever, and it is possible to reduce the occurrence of accidents.

The lever operation detecting means is formed by an inclination angle sensor, and the shift position judging means is provided detachably on the vehicle and detects a correction amount for detecting the inclination of the vehicle and the magnitude of the acceleration acting on the vehicle. When the shift position of the shift lever is determined based on the output signals of the correction amount detection means and the lever operation detection means,
Not only is the structure of the lever operation detecting means simple and low-cost, and it is easy to attach and detach, but also the influence of the inclination and acceleration of the vehicle can be eliminated, and the shift position of the shift lever can be accurately obtained.

[Brief description of the drawings]

FIG. 1 is a configuration explanatory view of a shift lever position display device of a manual transmission according to an embodiment of the present invention.

FIG. 2 is a diagram showing a relationship between a shift lever position and outputs of an X-direction shift sensor and a Y-direction shift sensor according to the embodiment.

FIG. 3 is an explanatory diagram of an example of an arrangement of a shift position indicator according to the embodiment.

FIG. 4 is a detailed explanatory diagram of a shift signal output circuit according to an embodiment.

FIG. 5 is a detailed explanatory diagram of a shift position determination circuit according to the embodiment.

FIG. 6 is an explanatory diagram illustrating an inclined state of an X-direction shift sensor and a Y-direction shift sensor with respect to a shift position of a shift lever according to the embodiment.

FIG. 7 is a timing chart for explaining the output signals of the X-direction shift sensor and the X-direction correction amount sensor according to the embodiment and the operation of the differential amplifier circuit connected to them.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 12 Console 14 Shift lever 22 Lever operation detection means (lever operation detector) 24 Inclination angle sensor (X direction shift sensor) 26 Inclination angle sensor (Y direction shift sensor) 28 Shift position determination means (shift position determination device) 30 Correction amount Detecting means (correction amount detector) 32 X-direction correction amount sensor 34 Y-direction correction amount sensor 36 Shift signal output circuit 38 Shift position determination circuit 40 Display means (Shift position display)

Claims (2)

[Claims] 1. A lever operation detecting means which is detachably attached to a shift lever of a vehicle and detects an inclination and an inclination direction of the shift lever. The shift operation of the shift lever is performed based on a detection signal of the lever operation detecting means. A shift lever position display device for a manual transmission, comprising: shift position determining means for determining a shift position; and detachable display means for displaying the shift position determined by the shift position determining means in a vehicle interior. 2. The control device according to claim 1, wherein the lever operation detecting means is formed by an inclination angle sensor, and the shift position determining means is provided in the vehicle so as to be detachable and detects a vehicle inclination and an acceleration acting on the vehicle. 2. The shift lever of the manual transmission according to claim 1, wherein a detection unit is connected, and a shift position of the shift lever is obtained based on output signals from the correction amount detection unit and the lever operation detection unit. Position display device.