JP5265035B2 - Lever position detector - Google Patents

Description

  The present invention relates to a lever position detection device.

Conventionally, for example, a plurality of shift position contacts are provided on a linear movement path along which a shift contact of a shift lever moves, and a shift position contact in contact with the movement contact is detected among the plurality of shift position contacts when the shift lever is displaced. Thus, a shift position detection device that detects the position of the shift lever is known (see, for example, Patent Document 1).
In this shift position detecting device, an off-position contact is arranged with a predetermined interval between adjacent shift position contacts on the movement path, and the off-position contact and the shift lever moving contact are in contact with each other. If it is detected that the moving contact of the shift lever is located between the shift position contacts (that is, the position shifted from the shift position contact) due to a mechanical shift or the like, The position of the moving contact of the shift lever is detected and distinguished from an abnormality such as disconnection.

JP-A-6-109110

By the way, in the shift position detecting device according to the above-described prior art, it is necessary to provide off-position contacts between adjacent shift position contacts on the moving path of the moving contact of the shift lever, which increases the total number of contacts. The problem arises.
In addition, simply detecting the presence of contact between the shift lever moving contact and the shift position contact or the off position contact, the position of the shift lever that is not intended by the driver when an abnormality occurs at multiple shift position contacts. May be detected by mistake. For example, when a detected ON failure occurs in which the shift position contact corresponding to neutral is always in the OFF state, and a detected ON failure in which the shift position contact corresponding to the reverse or drive is always in the ON state occurs, the shift actually occurs. Even when the lever moving contact and the neutral shift position contact are in contact, there is a problem that the position of the shift lever is erroneously detected as being reverse or drive.
The present invention has been made in view of the above circumstances, and provides a lever position detection device capable of preventing erroneous detection of the position of the shift lever while suppressing an increase in the number of detection points required. The purpose is to do.

  In order to solve the above problems and achieve the object, the lever position detection device according to the first aspect of the present invention is such that the shift lever (for example, the shift lever 12 in the embodiment) is in a predetermined position. A lever position detection device for detecting, which is a bent shape having a corner (for example, corner C in the embodiment), and moves in synchronization with the operation of the shift lever (for example, the embodiment) The movement path (for example, movement path TRb in the embodiment) of the detected member 21 in the form and the first shift position (for example, the neutral position in the embodiment) located at the corner of the movement path. (N)), a second shift position (for example, the home position (H) in the embodiment) provided on the movement path with the first shift position interposed therebetween, and a third variable position. A position (for example, the reverse position (R) in the embodiment), the movement path, and the outer edge angle (for example, the outer edge angle Cb in the embodiment) side of the corner portion; On the outer edge angle side shift position detection unit (for example, the seventh detection element (N2) 47 in the embodiment) that outputs an ON signal when the is located at the first shift position, And when it is provided on the inner edge angle (for example, inner edge angle Ca in the embodiment) side of the corner portion and the detected portion is located at the first shift position, the first shift position and The detected portion is located at a position where the outer edge angle side shift position detection unit does not output the ON signal between the second shift position or between the first shift position and the third shift position. Place to do Thus, only the inner edge angle side shift position detection unit (for example, the sixth detection element (N1) 46 in the embodiment) that outputs an ON signal and the inner edge angle side shift position detection unit output the ON signal. In this case, an intermediate position between the first shift position and the second shift position or between the first shift position and the third shift position (for example, the fourth shift position in the embodiment). , 5 intermediate position or 6th and 7th intermediate position) position detecting means (for example, position detecting unit 51 in the embodiment) for determining that the detected portion is located.

  Furthermore, in the lever position detection device according to the second aspect of the present invention, the position detection means outputs the output signal from the inner edge angle side shift position detection unit when the outer edge angle side shift position detection unit outputs the ON signal. Regardless of the on signal and the off signal to be performed, it is determined that the detected portion is located at the first shift position.

  Furthermore, the lever position detection device according to the third aspect of the present invention includes an abnormality determination unit (for example, an abnormality determination unit 53 in the embodiment) that determines an abnormal state according to a detection result from the position detection unit. The position detecting means is configured to detect that the normal outer edge angle side shift position detecting section is not affected by the abnormality determining means even if it is determined that the inner edge angle side shift position detecting section is an off-failure that does not always output the on signal. When the ON signal is output, it is determined that the detected portion is located at the first shift position.

  Furthermore, the lever position detection device according to the fourth aspect of the present invention includes an abnormality determination unit (for example, an abnormality determination unit 53 in the embodiment) that determines an abnormal state according to a detection result from the position detection unit. The position detecting means is configured so that even if the abnormality determining means determines that the outer edge angle side shift position detecting section is an off failure in which the on signal is not always output, the normal inner edge angle side shift position detecting section When the ON signal is output, the first shift position, or between the first shift position and the second shift position, or between the first shift position and the third shift position. It is determined that the detected part is located between

  Furthermore, in the lever position detection device according to the fifth aspect of the present invention, the first shift position is a neutral position (for example, the neutral position (N) 65 in the embodiment), and the second shift position. Is a home position (for example, home position (H) 61 in the embodiment), and the third shift position is a reverse position (for example, reverse position (R) 66 in the embodiment). According to detection results from the outer edge angle side shift position detection unit and the inner edge angle side shift position detection unit, the detection means is the neutral position, or between the neutral position and the home position, or the neutral position. Between the reverse position Serial determined to distinguish whether the detected portion is located.

  According to the lever position detection device of the first aspect of the present invention, there is one shift position and two intermediate positions (that is, between the first shift position, the first shift position, and the second shift position). Two shift position detectors (ie, an outer edge angle side shift position detector and an inner edge angle side shift position detector) in order to distinguish and recognize the first shift position and the third shift position). As compared with the case where three detection units corresponding to three positions are provided, the total number of detection units required can be reduced.

  Further, according to the lever position detection device of the second aspect of the present invention, the outer edge angle side shift position detection unit outputs the on signal regardless of the on signal and the off signal output by the inner edge angle side shift position detection unit. In this case, it can be detected that the detected portion is located at the first shift position.

  Furthermore, according to the lever position detection device of the third aspect of the present invention, for example, even when the inner edge angle side shift position detection unit has an OFF failure that does not always output an ON signal, the normal outer edge angle side When the shift position detection unit outputs an ON signal, it can be detected that the detected portion is positioned at the first shift position, and the detected portion is positioned at the first shift position. In addition, it is possible to prevent erroneous detection when it is located at the second shift position or the third shift position.

  Furthermore, according to the lever position detection device of the fourth aspect of the present invention, for example, even when the outer edge angle side shift position detection unit has an OFF failure that does not always output an ON signal, the normal inner edge angle side When the shift position detection unit outputs an ON signal, the detected portion is positioned between the first shift position, the first shift position and the second shift position, or the third shift position. And detecting that the detected portion is positioned at the second shift position or the third shift position even though the detected portion is positioned at the first shift position is prevented. be able to.

  Furthermore, according to the lever position detection device of the fifth aspect of the present invention, the neutral position or the neutral position and the home position can be obtained only by including the outer edge angle side shift position detection unit and the inner edge angle side shift position detection unit. Or between a neutral position and a reverse position can be distinguished and detected.

It is a block diagram of the lever position detection apparatus which concerns on embodiment of this invention. It is a figure which shows the shift pattern of the shift lever of the lever position detection apparatus which concerns on embodiment of this invention. ON for each position of the shift lever of the lever position detection device according to the embodiment of the present invention, that is, every six shift positions and every seven first to seventh intermediate positions, facing the magnetic pole surface of the detected member. It is a figure which shows the detection element which outputs a signal. It is a figure which shows the detection element which outputs an ON signal facing the magnetic pole surface of the to-be-detected member in the position of the shift lever of the lever position detection apparatus which concerns on embodiment of this invention in a home position (H). It is a figure which shows the detection element which outputs an ON signal so that the position of the shift lever of the lever position detection apparatus which concerns on embodiment of this invention opposes the magnetic pole surface of the to-be-detected member in a 4th intermediate position. It is a figure which shows the detection element which outputs an ON signal in opposition to the magnetic pole surface of the to-be-detected member in the position of the shift lever of the lever position detection apparatus which concerns on embodiment of this invention in a 5th intermediate position. It is a figure which shows the detection element which outputs an ON signal facing the magnetic pole surface of the to-be-detected member in the position of the shift lever of the lever position detection apparatus which concerns on embodiment of this invention in the neutral position (N). It is a figure which shows the detection element which outputs an ON signal in opposition to the magnetic pole surface of the to-be-detected member in the position of the shift lever of the lever position detection apparatus which concerns on embodiment of this invention in a 6th intermediate position. It is a figure which shows the detection element which outputs the ON signal in opposition to the magnetic pole surface of the to-be-detected member in the position of the shift lever of the lever position detection apparatus which concerns on embodiment of this invention in a 7th intermediate position. It is a figure which shows the detection element which outputs an ON signal facing the magnetic pole surface of the to-be-detected member in the position of the shift lever of the lever position detection apparatus which concerns on embodiment of this invention in a reverse position (R).

Hereinafter, an embodiment of a lever position detection device of the present invention will be described with reference to the accompanying drawings.
As shown in FIG. 1, for example, the lever position detection device 10 according to this embodiment is a transmission control device 1 that controls a transmission 11 mounted on a vehicle or the like according to an operation of a shift lever 12 operated by an operator. The detection target member 21 that is provided and slides in synchronization with the operation of the shift lever 12, a sensor unit 22, and a processing device 23 is provided.
The sensor unit 22 includes a sensor substrate 31 and a plurality of (for example, eight) detection elements (for example, the detection elements 41,..., 48) arranged at predetermined positions on the sensor substrate 31. Has been.
The processing device 23 includes a position detection unit 51, a transition detection unit 52, and an abnormality determination unit 53.

The detected member 21 is made of, for example, a substantially square plate-shaped permanent magnet, and is along a predetermined movement path TR in a plane parallel to the surface of the sensor substrate 31 with the magnetic pole surface facing the surface of the sensor substrate 31. To slide.
The sliding movement of the detected member 21 is synchronized with the operation of the shift lever 12.
For example, as shown in FIG. 2, the shift lever 12 has a home position (H) 61, a shift-up position (+) 62, and a shift-down position (-) as predetermined shift positions for instructing the operation of the transmission 11. 63, an automatic shift / manual shift switching position (A / M) 64, a neutral position (N) 65, and a reverse position (R) 66.

  In the shift pattern of the shift lever 12, for example, in the two-dimensional XY plane with the orthogonal X axis and Y axis, the home position (H) 61 arranged at the origin position is separated in the Y axis positive direction. A shift up position (+) 62 is set at the position, a shift down position (−) 63 is set at a position separated in the Y-axis negative direction, and an automatic shift / manual shift switching position ( A / M) 64 is set, a neutral position (N) 65 is set at a position separated in the positive direction of the X axis, and a reverse position (R) is set at a position separated from the neutral position (N) 65 in the negative direction of the Y axis. ) 66 is set. That is, this shift pattern includes a cross-shaped pattern Pa centering on the home position (H) 61 and a bent pattern Pb having a neutral position (N) 65 at the corner position, and is a bent pattern. In Pb, a home position (H) 61 and a reverse position (R) 66 are arranged with a neutral position (N) 65 interposed therebetween.

  Further, between the home position (H) 61 and each shift up position (+) 62, shift down position (−) 63, and automatic shift / manual shift switching position (A / M) 64, each one first 1 to 3rd intermediate positions 71, 72, 73 are provided. Between the home position (H) 61 and the neutral position (N) 65, from the home position (H) 61 to the neutral position (N) 65, Sequentially, between the two fourth and fifth intermediate positions 74 and 75, and between the neutral position (N) 65 and the reverse position (R) 66, the neutral position (N) 65 goes to the reverse position (R) 66, Sequentially, two sixth and seventh intermediate positions 76 and 77 are provided.

Corresponding to the shift pattern of the shift lever 12, the movement path TR of the member 21 to be detected is, for example, when the shift lever 12 is centered on the home position (H) 61 and each shift-up position (+) 62 and shift-down position ( -) 63 and the cross-shaped movement path TRa when moving to the automatic shift / manual shift switching position (A / M) 64 and the neutral position (N) 65, for example, the shift lever 12 moves to the neutral position (N) 65. It is configured to include a bent movement path TRb when moving to each home position (H) 61 and reverse position (R) 66 as a corner position.
On the movement path TR of the detected member 21, corresponding to the six shift positions (each position 61,..., 66) and the seven first to seventh intermediate positions 71,. , 6 shift positions (ie, home position (H), shift-up position (+), shift-down position (-), automatic shift / manual shift switching position (A / M), neutral position (N) And a reverse position (R)) and seven intermediate positions (that is, first to seventh intermediate positions) are set.

The detection elements (for example, the detection elements 41,..., 48) on the sensor substrate 31 are magnetic sensors such as Hall elements, for example, and output an ON signal when the magnetic pole surfaces of the detection target member 21 are arranged to face each other. Then, an off signal is output in other states.
The positions of the detection elements 41,..., 48 on the sensor substrate 31 are every six shift positions (positions 61,..., 66) and every seven first to seventh intermediate positions 71,. Correspondingly, as shown in FIG. 3 and Table 1 below, for example, as shown in FIG. Is set.
In FIG. 3, the magnetic pole surface of the detected member 21 is opposed to each of the six shift positions (each of the positions 61,..., 66) and each of the seven first to seventh intermediate positions 71,. Thus, the detection elements that output an ON signal are shaded.

  For example, as shown in FIGS. 4 to 10, the first detection element (X1) 41 and the second detection element (X2) 42 correspond to the center of the cross-shaped movement path TRa (that is, the home position (H) 61). The third detection element (+) 43, the fourth detection element (−) 44, and the fifth detection element (A / M) 45 are arranged at positions shifted to the neutral position (N) 65 side in the vicinity of the position). It is arranged near the position corresponding to each shift-up position (+) 62, near the position corresponding to the shift-down position (-) 63, and near the position corresponding to the automatic transmission / manual transmission switching position (A / M) 64. .

Further, the sixth detection element (N1) 46 is provided on the inner edge corner Ca side of the corner portion C of the bent movement path TRb, and the seventh detection element (N2) 47 is formed on the corner portion C of the bent movement path TRb. It is provided on the outer edge angle Cb side. When the shift lever 12 moves between the home position (H) 61 and the neutral position (N) 65 and when it moves between the neutral position (N) 65 and the reverse position (R) 66. , The sixth detection element (N1) 46 and the seventh detection are in the neutral position (N) 65 so that only the sixth detection element (N1) 46 is disposed so that the magnetic pole surfaces of the detected member 21 face each other. The magnetic pole surface of the member to be detected 21 is set so as to face both of the elements (N2) 47.
The eighth detection element (R) 48 is disposed in the vicinity of the position corresponding to the reverse position (R) 66.

For example, as shown in FIG. 4, when the shift lever 12 is at the home position (H) 61, only the first detection element (X1) 41 and the second detection element (X2) 42 are opposed to the magnetic pole surface of the detected member 21. And an ON signal is set to be output.
For example, as shown in FIG. 5, when the shift lever 12 is in the fourth intermediate position 74, only the first detection element (X1) 41, the second detection element (X2) 42, and the sixth detection element (N1) 46 are covered. The ON signal is set so as to be opposed to the magnetic pole surface of the detection member 21.
For example, as shown in FIG. 6, when the shift lever 12 is in the fifth intermediate position 75, only the sixth detection element (N1) 46 is set to output an ON signal facing the magnetic pole surface of the detected member 21. Has been.

For example, as shown in FIG. 7, when the shift lever 12 is in the neutral position (N) 65, only the sixth detection element (N1) 46 and the seventh detection element (N2) 47 are opposed to the magnetic pole surface of the detected member 21. And an ON signal is set to be output.
For example, as shown in FIG. 8, when the shift lever 12 is in the sixth intermediate position 74, only the sixth detection element (N 1) 46 is set to output an ON signal facing the magnetic pole surface of the detected member 21. Has been.
For example, as shown in FIG. 9, when the shift lever 12 is in the seventh intermediate position 75, only the sixth detection element (N1) 46 and the eighth detection element (R) 48 face the magnetic pole surface of the detected member 21. Is set to output an ON signal.
For example, as shown in FIG. 10, when the shift lever 12 is in the reverse position (R) 66, only the eighth detection element (R) 48 is opposed to the magnetic pole surface of the detected member 21 and outputs an ON signal. Is set.

  The position detection unit 51 of the processing device 23 is based on the ON signal and OFF signal output from each of the detection elements 41,..., 48, for example, referring to Table 1 above, the position of the shift lever 12 is the above-described six positions. Detects the position of the shift position (each position 61,..., 66) and the seven first to seventh intermediate positions 71,..., 77 and outputs the detection result to the transition detection unit 52. To do.

The transition detection unit 52 of the processing device 23 stores the detection result of the position of the shift lever 12 output from the position detection unit 51 as time series data, and determines whether or not the time series data has a predetermined transition. The determination result is output to the abnormality determination unit 53.
For example, in the normal state, when the position of the shift lever 12 changes from the home position (H) 61 to the neutral position (N) 65, 2 between the home position (H) 61 and the neutral position (N) 65. It is determined whether the fourth and fifth intermediate positions 74 and 75 are sequentially detected.
Further, for example, when the position of the shift lever 12 changes from the neutral position (N) 65 to the reverse position (R) 66 in the normal state, it is between the neutral position (N) 65 and the reverse position (R) 66. Thus, it is determined whether or not the two sixth and seventh intermediate positions 76 and 77 are sequentially detected.

The abnormality determination unit 53 of the processing device 23 determines the presence / absence of an abnormality and the content of the abnormality that has occurred, according to the determination result output from the transition detection unit 52.
For example, when the position of the shift lever 12 changes between six shift positions (each of the positions 61,..., 66), if the intermediate positions 71,. Is determined to have occurred.

  As described above, according to the lever position detection device 10 according to the present embodiment, the neutral position (N) 65, the position between the neutral position (N) 65 and the home position (H) 61, and the neutral position (N) 65 are set. In order to distinguish and recognize the three positions between the reverse position (R) 66 and the reverse position (R) 66, it is only necessary to provide two sixth detection elements (N1) 46 and seventh detection element (N2) 47, for example, Compared with the case where three detection elements corresponding to these three positions are provided, the total number of detection elements required can be reduced.

  In addition, two fourth and fifth intermediate positions 74, between the neutral position (N) 65 and the home position (H) 61 are provided by the two sixth detection elements (N 1) 46 and the seventh detection element (N 2) 47. 75, and two sixth and seventh intermediate positions 76 and 77 can be provided between the neutral position (N) 65 and the reverse position (R) 66, and the shift lever 12 is in the neutral position ( N) When it is determined that it exists between the home position (H) 61 and when it is determined that the shift lever 12 exists between the neutral position (N) 65 and the reverse position (R) 66 In this case, the redundancy can be improved.

Further, the neutral position (N) 65 is set such that the two sixth detection elements (N1) 46 and the seventh detection element (N2) 47 are in a state of facing the magnetic pole surface of the detected member 21. Of the two sixth detection elements (N1) 46 and seventh detection element (N2) 47, for example, even when the sixth detection element (N1) 46 has an OFF failure that does not always output an ON signal, When the normal seventh detection element (N2) 47 outputs an ON signal, it can be detected that the shift lever 12 is in the neutral position (N) 65, and the shift lever 12 is in the neutral position (N). Although it is located at 65, it is possible to prevent erroneous detection when located at the home position (H) 61 or the reverse position (R) 66.
For example, even when the seventh detection element (N2) 47 has an OFF failure that does not always output an ON signal, the shift lever 12 is output when the normal sixth detection element (N1) 46 outputs an ON signal. Is located between the neutral position (N) 65, or between the neutral position (N) 65 and the home position (H) 61, or between the neutral position (N) 65 and the reverse position (R) 66. The fact that the shift lever 12 is positioned at the home position (H) 61 or the reverse position (R) 66 even though the shift lever 12 is positioned at the neutral position (N) 65 is erroneously detected. Can be prevented.

  Further, when the position of the shift lever 12 changes between the six shift positions (the respective positions 61,..., 66), it passes through the intermediate positions 71,. In the series data, when the shift position at which the shift lever 12 is positioned is changed without passing through the intermediate positions 71,..., 77, it can be easily detected that an abnormality has occurred in the corresponding detection element.

  In the embodiment described above, each of the detection elements 41,..., 48 is a magnetic sensor, but is not limited to this, and may be another sensor such as an optical sensor. In this case, the member to be detected 21 does not need to be configured by a permanent magnet, and may have a configuration corresponding to the type of sensor employed in each of the detection elements 41,.

10 Lever position detection device 12 Shift lever 21 Detected member (detected portion)
46 6th detection element (N1) (inner edge angle side shift position detection part)
47 7th detection element (N2) (outer edge angle side shift position detection unit)
51 Position detection unit (position detection means)
52 Transition detection unit (transition detection means)
53 Abnormality determination unit (abnormality determination means)

Claims (5)

A lever position detection device for detecting that the shift lever is at a predetermined position,
A bent shape having a corner, and a movement path of the detected portion that moves in synchronization with the operation of the shift lever;
A first shift position located at the corner of the movement path;
A second shift position and a third shift position provided across the first shift position on the movement path;
An outer edge angle side shift position detection unit that is provided on the movement path and on the outer edge angle side of the corner portion, and outputs an ON signal when the detected portion is located at the first shift position;
The first shift position and the second shift position provided on the inner edge angle side of the corner portion and the detected portion being located at the first shift position; Or when the detected portion is located at a position where the outer edge angle side shift position detecting portion does not output the on signal between the first shift position and the third shift position. An inner edge angle side shift position detector that outputs
When only the inner edge angle side shift position detection unit outputs the ON signal, the first shift position and the second shift position, or the first shift position and the third shift position, A lever position detecting device comprising: position detecting means for determining that the detected portion is positioned at an intermediate position between the two. When the outer edge angle side shift position detection unit outputs the ON signal, the position detection means is configured to output the first shift position regardless of the ON signal and the OFF signal output from the inner edge angle side shift position detection unit. The lever position detection device according to claim 1, wherein it is determined that the detected portion is located at a position. An abnormality determination unit that determines an abnormal state according to a detection result from the position detection unit,
Even if the position detecting means determines that the inner edge angle side shift position detecting section is in an off-failure state in which the inner edge angle side shift position detecting section does not always output the on signal, the normal outer edge angle side shift position detecting section is not turned on. 3. The lever position detection device according to claim 1, wherein when the signal is output, it is determined that the detected portion is located at the first shift position. 4. An abnormality determination unit that determines an abnormal state according to a detection result from the position detection unit,
Even if the position detection means determines that the outer edge angle side shift position detection unit is in an off-failure state in which the outer edge angle side shift position detection unit does not always output the on signal, the normal inner edge angle side shift position detection unit does not turn on. When a signal is output, the first shift position, or between the first shift position and the second shift position, or between the first shift position and the third shift position. The lever position detecting device according to any one of claims 1 to 3, wherein it is determined that the detected portion is positioned between them. The first shift position is a neutral position;
The second shift position is a home position;
The third shift position is a reverse position;
The position detecting means is configured to detect the neutral position, or between the neutral position and the home position, or the neutral position based on detection results from the outer edge angle side shift position detection unit and the inner edge angle side shift position detection unit. The lever position detection device according to any one of claims 1 to 4, wherein the determination is made by distinguishing whether the detected portion is located between a position and the reverse position.

Images