JP2012086658A - Position detector of change lever, change lever unit having the same, and position detection method of change lever - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detect the position of a change lever with excellent accuracy with a simpler structure.SOLUTION: The electric shift position signal value and the electric select position signal value of a Hall element 3 which are output corresponding to the magnetism of a magnet 2 in three ranges in the shift direction of the change lever and three ranges in the select direction of the change lever are recorded in a memory of the Hall element as the sensor characteristic values. Between ranges, the Hall element 3 performs the complementary output of the electric shift position signal value and the electric select position signal value corresponding to the position of the Hall element 3 as the sensor characteristic values by using the shift side virtual line connecting the adjacent electric shift position signal values to each other and the select side virtual line connecting the adjacent electric select position signal values to each other. Thus, even when various kinds of dispersions occur, the position of the change lever can be detected with excellent accuracy.

Description

  TECHNICAL FIELD The present invention relates to a change lever position detection device that detects the position of a change lever operated to perform shift control of a vehicle transmission, a change lever unit including the change lever unit, and a change lever position detection method. It is about.

  In a transmission of a vehicle, a change lever unit is operated in a select direction and a shift direction perpendicular to the select direction to set a range of the transmission, and in the set range, the transmission is Shift control is performed. For this reason, the change lever unit is provided with a change lever position detecting device for detecting the position of the change lever when the range is set.

  As a conventional change lever position detection device, four Hall ICs are arranged opposite to the magnet provided on the change lever, and the output signals output from the four Hall ICs when the magnet is moved by operating the change lever. A change lever position detecting device that detects the position of the change lever using a combination of the above is known (see, for example, Patent Document 1).

Japanese Patent Application Laid-Open No. 2004-138235.

  Incidentally, the change lever position detection device described in Patent Document 1 requires four Hall ICs and one magnet. For this reason, the layout of the four Hall ICs is inevitably limited, the wiring is complicated, and the use of the four Hall ICs and one magnet may hinder cost reduction. In order to solve these problems, it is conceivable to employ a 3D Hall IC instead of the four Hall ICs.

  However, by simply replacing the four Hall ICs with the 3D Hall IC, after assembly of the change lever position detection device, that is, after the assembly of the change lever unit, the Hall IC is subject to variations in assembly accuracy and tolerances between the Hall IC and the magnet. Magnetic variation of the magnet occurs. For this reason, there is a problem that the 3D Hall IC does not accurately generate the electrical shift position signal and it is difficult to accurately detect the position of the change lever.

  The present invention has been made in view of such circumstances, and an object thereof is to provide an inexpensive change lever position detection device capable of accurately detecting the position of the change lever with simpler wiring. A change lever unit and a change lever position detection method are provided.

In order to solve the above-described problems, a change lever position detection device according to the present invention is provided in a change lever that is selectively set to one of a plurality of ranges set in a select direction and a shift direction, respectively. And detecting the magnetism of the magnet,
A hall element that outputs both an electrical select position signal corresponding to the select position of the change lever and an electrical shift position signal corresponding to the shift position of the change lever and has a memory, the hall element, Select the electrical select position signal value to be detected and output when the change lever is set to an arbitrary first predetermined number of ranges in the select direction. As a sensor characteristic value on the side, and the magnetism on the shift side of the magnet when the change lever is set to an arbitrary second predetermined number of ranges among the plurality of ranges in the shift direction. The electrical shift position signal value detected and output is stored in the memory as a sensor characteristic value on the shift side. An electrical select position signal that is output between the ranges in the select direction and in a range other than the first predetermined number of ranges based on the recorded electrical select position signal value and the electrical shift position signal value. A value is complemented and outputted, and an electrical shift position signal value outputted between the ranges in the shift direction and in a range other than the second predetermined number of ranges is complemented and outputted.

  Further, the change lever position detecting device according to the present invention is characterized in that the Hall element connects at least a select side virtual straight line connecting adjacent electrical select position signal values and a select side virtual extension line of the select side virtual straight line. The electrical select position signal value output between the ranges in the select direction and in a range other than the first predetermined number of ranges, and the adjacent electrical shift position signal value. Electricity that is output between ranges in the shift direction and in a range other than the second predetermined number of ranges by using at least one of a shift-side virtual straight line connecting the shifts and a shift-side virtual extension line of the shift-side virtual straight line It is characterized in that it outputs a complementary shift position signal value.

  On the other hand, the change lever unit according to the present invention is provided such that one of the shift rotation shaft and the select rotation shaft provided orthogonal to each other and the shift rotation shaft and the select rotation shaft are rotatable. At least a change lever attached to one of the shift rotation shaft and the select rotation shaft, and a change lever position detecting device for detecting the position of the change lever. The lever position detection device is a change lever position detection device according to claim 1 or 2.

  The change lever position detection method according to the present invention includes a magnet provided on a change lever that is selectively set in one of a plurality of ranges set in the select direction and the shift direction, Hall elements for outputting, by magnetism, an electrical select position signal corresponding to the range in the select direction in which the change lever is set and an electrical shift position signal in accordance with the range in the shift direction where the change lever is set; According to the change lever position detection method for detecting the position of the change lever, the change lever when the change lever is set to an arbitrary first predetermined number of ranges among the plurality of ranges in the select direction. The electrical select position signal value output by the hall element is used as the sensor characteristic value on the select side. An electrical shift position signal value recorded in the memory of the Hall element and output by the Hall element when the change lever is set to an arbitrary second predetermined number of ranges in the shift direction. Is recorded in the memory of the Hall element as a sensor characteristic value on the shift side, and at least one of the select-side virtual straight line connecting adjacent electrical select position signal values and the select-side virtual extension line of the select-side virtual straight line The electric select position signal values between the ranges in the select direction and in ranges other than the first predetermined number of ranges are complemented and output, and the adjacent electric shift position signal values are connected. Using at least one of the shift-side virtual straight line and the shift-side virtual extension of the shift-side virtual straight line, By outputting the complementary electrical shift position signal value in the range other than the second predetermined number range, it is characterized by detecting the position of the change lever.

  According to the change lever position detecting device, the change lever unit, and the change lever position detecting method according to the present invention configured as described above, the sensor characteristics of the Hall element are selected after the change lever unit is assembled. Each electrical select position signal value output by the Hall elements in the first predetermined number of ranges of the direction and each electrical shift position signal value output by the Hall elements in the second predetermined number of ranges of the shift lever shift direction The data is recorded in the memory and the data in the memory is corrected, and on the basis of the corrected electrical select position signal value and electrical shift position signal value, another range of the change lever (the first predetermined direction in the select direction). Each other than the number range and the second predetermined number range in the shift direction) and the change lever And the sensor characteristics that complement the electrical shift position signal value and an electrical select position signal values the Hall element is output between Nji. This makes it possible to obtain desired sensor characteristics for each change lever unit.

  In addition, sensor characteristics can be obtained individually in this way, reducing sensor performance defects caused by variations of individual components such as change levers and variations due to positional shifts that occur when the change lever unit is assembled. It becomes possible to make it. As a result, the yield of the change lever position detection device (that is, the reduction in the defect rate) is improved.

  Furthermore, even if such variations occur, the sensor characteristics of the Hall element can be adjusted easily and with high accuracy. As a result, the adjustment time of the sensor characteristics of the Hall element can be shortened, and the position detection accuracy can be effectively improved. In addition, a 3D Hall element can be used as the Hall element, the degree of freedom in layout of the Hall element is improved, wiring is simplified, and cost can be reduced.

  Furthermore, regardless of the positional relationship between the magnet and the Hall element, it is possible to easily change the sensor characteristic of the Hall element to a desired characteristic. As a result, even if the product specification changes, it is possible to flexibly cope with the product specification change by changing the learning parameter corresponding to the specification change. Therefore, changes in the control program for the transmission 4 can be minimized.

  Further, by using approximate virtual straight lines based on the corrected electrical select position signal value and the electrical shift position signal value and their extension lines, a hall that outputs an electrical position signal corresponding to the detected magnetism. It becomes possible to more easily correct the sensor characteristics of the element.

It is a block diagram which shows the transmission control apparatus of a transmission provided with an example of embodiment of the position detection apparatus of the change lever which concerns on this invention. It is a longitudinal cross-sectional view which shows an example of embodiment of the change lever unit which concerns on this invention, and passes along the center of a shift rotation axis | shaft. It is a longitudinal cross-sectional view which passes along the center of the select rotation axis | shaft in the change lever unit of the example shown in FIG. (A) is a figure explaining operation of a change lever, (b) is a figure which shows the shift pattern of a change lever unit. It is a figure explaining the complementary output of the electrical signal corresponding to magnetism based on amendment of the sensor characteristic which outputs the electric signal corresponding to magnetism, and the amended sensor characteristic. It is a figure which shows the flow of each process of correction | amendment and complement shown in FIG.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing a transmission control device for a transmission provided with an example of an embodiment of a change lever position detection device according to the present invention.

As shown in FIG. 1, a transmission control device 1 for a transmission includes a magnet 2, a hall element 3, and an electronic control unit (TCU: Transmission Control Unit) 5 for the transmission 4. The hall element 3 includes a memory 6, and the TCU 5 includes a range position signal input unit 7 and a shift control signal output unit 8. The magnet 2 and the Hall element 3 constitute a change lever position detection device 9. In the shift control device 1 of this example, the range position signal input unit 7 is disposed in the TCU 5, but in the present invention, the range position signal input unit 7 may be disposed in the position detection device 9 of the change lever. it can.

The change lever and its position detection device 9 are provided in a change lever unit (CLU) of the transmission. FIG. 2 shows an example of the change lever unit, which is a longitudinal sectional view passing through the center of the shift rotation shaft, and FIG. 3 is a longitudinal sectional view passing through the center of the select rotation shaft of the change lever unit of this example.
2 and 3, the CLU 10 of this example includes a unit main body 11 and a case 12 that is detachably attached to the upper end of the unit main body 11 so as to close the upper end opening of the unit main body 11. Yes.

  A shift rotation shaft 13 is provided in the unit main body 11 so as to be rotatable around its central axis. The shift rotation shaft 13 is provided with a select rotation shaft 14 penetrating the shift rotation shaft 13 so as to be orthogonal to the shift rotation shaft 13. Furthermore, one end of a change lever 15 is rotatably attached to the select rotation shaft 14. Accordingly, the change lever 15 can be rotated about the shift rotation shaft 13 and can be rotated about the select rotation shaft 14.

  The upper end of the case 12 is provided with a shift pattern hole 16 formed corresponding to the shift pattern of the CLU 10 of this example and through which the change lever 15 passes. The shift pattern hole 16 is a passage through which the change lever 15 passes when the change lever 15 is operated. As shown in FIGS. 4A and 4B, the shift pattern 17 of this example includes two first shift columns Si1 and second shift columns Si2 arranged in parallel with each other at a predetermined interval. It has one select column Se. In that case, the first and second shift columns Si1, Si2 and the select column Se are orthogonal to each other.

  In the first shift column Si1, three ranges of parking (P), neutral (N), and reverse (R) are arranged in a line in this order. In the second shift column Si2, three ranges of upshift (UP), drive (D), and downshift (DOWN) are arranged in a line in this order. Further, in the select column Se, three ranges of neutral (N), drive (D) and drive holding (A / M) are arranged in a line in this order. The N range of the first shift column Si1 is the same as the N range of the select column Se, and the D range of the second shift column Si2 is the same as the D range of the select column Se. The shift pattern hole 16 is formed in a shape corresponding to the first and second shift columns Si1, Si2 and the select column Se.

As shown in FIGS. 2 and 3, a parking lever 18 is disposed adjacent to the change lever 15 on the shift rotation shaft 13. The parking lever 18 rotates in conjunction with the movement of the change lever 15 when the change lever 15 is operated in the first shift train Si1. Although not shown, the parking lever 18 is connected to a transmission locking means for mechanically locking a transmission (TM) such as an automatic transmission via a parking cable. When the change lever 15 is set to the P range, the parking lever 18 rotates in conjunction with the transmission lever to operate via the parking cable, and the transmission is mechanically locked.

  The parking lever 18 is separated from the change lever 15 when the change lever 15 moves from the N range of the first shift train Si1 to the D range of the second shift train Si2. Therefore, the change lever 15 is not interlocked with the movement of the change lever 15 when operated outside the first shift train Si1. Further, when the parking lever 18 is separated from the change lever 15, the parking lever 18 is locked so as to be held at the separated position by the parking lever locking means 19. When the parking lever 18 is locked by the parking lever locking means 19, a locking member 19 b operated by a solenoid 19 a enters the parking lever locking means 19 and enters the lock hole of the parking lever 18 to engage with the parking lever 18 in the rotational direction. (The locked state of the parking lever 18 by the lock member 19b is shown by a two-dot chain line in FIG. 2).

  As shown in FIG. 2, the magnet 2 of the change lever position detection device 9 is provided at the lower end of the change lever 15 (the end of the change lever 15 on the unit main body 11 side). Further, the Hall element 3 of the change lever position detection device 9 is provided on the unit body 11 so that the magnet 2 can face the unit body 11. In that case, the Hall element 3 is provided so that the center thereof is positioned on a straight line passing through the center of the select rotation shaft 14 and orthogonal to the shift rotation shaft 13. When the change lever 15 is at a position orthogonal to the shift rotation shaft 13, the center of the magnet 2 faces the center of the Hall element 3. Accordingly, the CLU 10 includes the change lever position detection device 9 of this example. The hall element 3 detects the magnetism of the magnet 2 that changes in accordance with the position of the change lever 15 and outputs an electrical select position signal and an electrical shift position signal corresponding to the detected magnetism. As these electrical select position signal and electrical shift position signal, a voltage signal, a PWM signal, a serial communication signal, or the like is used.

  The Hall element 3 in this example is a 3D Hall IC, and outputs an electrical select position signal corresponding to the position of the change lever 15 in the select direction and an electrical shift position signal corresponding to the position of the change lever 15 in the shift direction. . These electrical select position signal and electrical shift position signal can be recorded in the memory 6 of the hall element 3.

  In the change lever position detection device 9 of this example, each electrical select position signal value and each electrical shift position signal value recorded in the memory 6 in the Hall element 3 alone before assembly is the position of the change lever. After the detection device 9 is assembled, that is, after the CLU 10 is assembled, the sensor characteristic value is corrected as follows. FIG. 5 is a diagram illustrating correction of sensor characteristics for outputting an electrical signal corresponding to magnetism and complementary output of the electrical signal corresponding to magnetism based on the corrected sensor characteristics, and FIG. It is a figure which shows the flow of a process.

  As shown in FIG. 5, after assembling the CLU 10, first, the Hall element 3 detects the magnetism of the magnet 2 in any three ranges (corresponding to the first predetermined number of the present invention) of the change lever 15 in the select direction. Then, an electrical select position signal value is output. Further, the Hall element 3 detects the magnetism of the magnet 2 and outputs an electrical shift position signal value in each of any three ranges (corresponding to the second predetermined number of the present invention) of the change lever 15 in the shift direction. To do.

That is, for example, in the example shown in FIG. 5, in the select direction, the Hall element 3 detects the magnets A, B, and C of the magnet 2 in the three ranges of the D range, the A / M range, and the N range. The electrical select position signal values a, b, and c are output corresponding to the magnetic fields A, B, and C, respectively. These three electrical select position signal values a, b, and c are recorded in the memory 6 of the hall element 3 as sensor characteristic values.

In the shift direction, the Hall element 3 detects the magnetism D, E, and F of the magnet 2 in the three ranges of the D range, the DOWN range, and the UP range, respectively, and corresponds to the detected magnetism D, E, and F. The electric shift position signal values d, e, and f are output. These three electrical shift position signal values d, e, and f are recorded in the memory 6 of the hall element 3 as sensor characteristic values.
In this way, the electrical select position signal values a, b, c and the electrical shift position signal values d, e in which the data stored in the memory 6 alone before the Hall element 3 is assembled are newly stored. , F are corrected.

At the position of the change lever 15 between the three D ranges, A / M range, and N range in the select direction, the hall element 3 in this example converts the electrical select position signal value to the sensor characteristic value as follows. Complementary output as In this complementary output, first, an operator (not shown) in the memory 6 of the Hall element 3 connects the adjacent electrical select position signal values a and b with the first select-side virtual straight line β ₁ , and The electrical select position signal values a and c to be connected are connected by the second select side virtual straight line β ₂ . At this time, the slope of the _first select-side virtual straight line β ₁ is larger than the slope of the second select-side virtual straight line β ₂ . In this way, the sensor characteristics on the select side of the Hall element 3 that outputs an electrical signal corresponding to magnetism are corrected to the sensor characteristics based on the first and second select-side virtual straight lines β ₁ and β ₂ . When the change lever 15 is positioned between the ranges in the select direction, the electrical select position signal value that the Hall element 3 detects and outputs the magnetism of the magnet 2 is the first and second select side virtual values. It is complemented and output as a sensor characteristic value using the sensor characteristic by the straight lines β ₁ and β ₂ .

As described above, the first and second virtual straight lines β ₁ and β _{2 having} different inclinations in the select direction are used.
The reason for this is that, in general, in the Hall element 3 of the 3D Hall IC type, the output electrical position signal value changes linearly or almost linearly when the ranges are equal but approximately equal. However, since the distance between the D range and the A / M range in the select direction in this example is extremely short compared to the distance between the D range and the N range, the three electrical position signal values a, b, If c is positioned on one imaginary straight line, good resolution of the Hall element 3 cannot be obtained. Therefore, in this example, two virtual straight lines having different inclinations are used. When the distance between the D range and the A / M range is set so that a good resolution of the Hall element 3 can be obtained, one virtual straight line can be used.

Further, the position of the change lever 15 between the three ranges of the D direction, the DOWN range, and the UP range in the shift direction, and the change lever 15 between the three ranges of the other P range, N range, and R range in the shift direction. The Hall element 3 also complements and outputs the electrical select position signal value as a sensor characteristic value in the following manner also at the position of the change lever 15 of the other three P ranges, N ranges, and R ranges. First, an operator (not shown) in the memory 6 of the Hall element 3 connects the adjacent electrical select position signal values d and e with the first shift-side virtual straight line, and also connects the adjacent electrical select position signal values d. , f are connected by a second shift-side virtual straight line. At this time, since the distance between the D range and the DOWN range and the distance between the D range and the UP range are equal to or substantially equal to each other, the slopes of the first and second shift-side virtual straight lines are Since they are the same, these first and second shift-side virtual straight lines are formed by one shift-side virtual straight line α. In this case, since there is no straight line α in the region of the electrical shift position signal output in the P range and R range of the change lever 15, an extension line α ′ of the straight line α is formed in this region. In this way, the sensor characteristic on the shift side of the Hall element 3 that outputs an electrical signal corresponding to magnetism is corrected to the sensor characteristic based on the shift-side virtual straight line α and its extension line α ′. An electrical select position signal value that the Hall element 3 detects and outputs magnetism of the magnet 2 when the change lever 15 is positioned between each range in the shift direction or in the other three P ranges, N ranges, and R ranges. Are supplemented as sensor characteristic values using the sensor characteristics of these shift-side virtual straight lines α and their extension lines α ′ and output.

  In this way, after the CLU 10 is assembled, the electrical select position signal value and the electrical shift position signal value output by the Hall element 3 in the predetermined number of ranges in the select direction and the predetermined number of ranges in the shift direction are recorded as sensor characteristics. Thus, the data in the memory 6 is corrected. Then, the Hall element 3 learns by using sensor characteristics based on the corrected electrical select position signal value and the corrected electrical shift position signal value, and performs other electrical select position signal values and other electrical shifts. The position signal value is complemented and output as a sensor characteristic value.

  Next, a complementary output method of the electrical select position signal value and the electrical shift position signal value of the Hall element 3 in each range of the change lever 15 by learning in the change lever position detection method of this example will be described.

  After assembling the CLU 10, the change lever 15 is set to the D range in step S1 as shown in FIG. Then, the Hall element 3 detects the magnet A on the select side and the magnetism D on the shift side of the magnet 2 in the D range, and outputs an electrical select position signal value a and an electrical shift position signal value d. Then, the electrical select position signal value a and the electrical shift position signal value d are recorded as sensor characteristic values in the memory 6 of the Hall element 3, and the data recorded in the memory 6 is corrected.

  Next, in step S2, the change lever 15 is set to the A / M range. Then, the Hall element 3 detects the magnetic B on the select side of the magnet 2 in the A / M range and outputs an electrical select position signal value b. Then, this electrical select position signal value b is recorded as a sensor characteristic value in the memory 6 of the hall element 3, and data in the A / M range recorded in the memory 6 is corrected.

  Next, in step S3, the change lever 15 is set to the N range. Then, the Hall element 3 detects the magnetism C on the select side of the magnet 2 in the N range and outputs an electrical select position signal value c. Then, the electrical select position signal value c is recorded as a sensor characteristic value in the memory 6 of the hall element 3, and the data in the N range recorded in the memory 6 is corrected.

  Next, in step S4, the change lever 15 is set to the DOWN range. Then, the Hall element 3 detects the magnetism E on the shift side of the magnet 2 in the DOWN range and outputs an electrical shift position signal value e. The electrical shift position signal value e is recorded as a sensor characteristic value in the memory 6 of the Hall element 3, and data in the DOWN range recorded in the memory 6 is corrected.

  Next, in step S5, the change lever 15 is set to the UP range. Then, the Hall element 3 detects the magnetic F on the shift side of the magnet 2 in the UP range and outputs an electrical shift position signal value f. Then, this electrical shift position signal value f is recorded as a sensor characteristic value in the memory 6 of the Hall element 3, and the data in the UP range recorded in the memory 6 is corrected.

Next, in step S6, among the corrected electrical select position signal values, the adjacent electrical select position signal values a and b are connected by the _first select-side virtual straight line β1, and the adjacent electrical select position signals are also connected. The position signal values a and c are connected by the _second select side virtual straight line β ₂ . When the change lever 15 is positioned between the ranges in the select direction, the electrical select position signal value that the Hall element 3 detects and outputs the magnetism of the magnet 2 is the first and second select side virtual values. It is complemented using _{one of} the straight lines β ₁ and β ₂ and output as a sensor characteristic value. Among the corrected electrical shift position signal values, adjacent electrical shift position signal values d and e are connected by a first shift-side virtual straight line, and adjacent electrical select position signal values d and f are Connected by a second shift-side virtual straight line. At this time, since the distance between the D range and the DOWN range and the distance between the D range and the UP range are equal or substantially equal to each other, the first and second shift-side virtual straight lines have the same inclination. Is formed by one shift-side virtual straight line α. The Hall element 3 detects the magnetism of the magnet 2 when the change lever 15 is positioned between the ranges or in the P range and the R range which are shift ranges other than the D range, the DOWN range, and the UP range. The electrical shift position signal value to be output is complemented by using the shift-side virtual straight line α or the extension line α ′ of the shift-side virtual straight line α and output as a sensor characteristic value. Note that the procedures of steps S1 to S5 in the flow shown in FIG. 6 are in no particular order and can be set in any order.

Next, the operation of the CLU 1 of this example will be described.
When the vehicle is stopped, the change lever 15 is generally set to the P range. Therefore, an electrical select position signal and an electrical shift position signal corresponding to the P range are input from the memory 6 of the Hall element 3 of the change lever position detection device 9 to the range position signal input unit 7 of the TCU 5. The TCU 5 outputs a control signal corresponding to the P range to the transmission 4 from the shift control signal output unit 8 based on the inputted electrical select position signal and electrical shift position signal of the Hall element 3. Thereby, the shift shift of the transmission 4 is set to the P range. In this state, the change lever 15 and the parking lever 18 are engaged in the rotational direction, and the parking lever 18 is rotated to a position corresponding to the P range of the change lever 15. Therefore, the transmission 4 is mechanically locked by the rotation of the parking lever 18.

  In this state, the change lever 15 is operated from the P range to another range in order to drive the vehicle. At this time, the brake pedal is depressed, the change lever 15 is unlocked by the change lever locking means, and the change lever 15 can be moved from the P range. At the same time, the solenoid 19a of the parking lever locking means 19 is excited and the lock member 19b is in the unlocked position. When the change lever 15 is turned to the N range of the first shift train Si1, the parking lever 18 is also turned integrally with the change lever 15 and the mechanical lock of the transmission is released. When the change lever 15 is in the N range, the lock hole of the parking lever 18 is in a position facing the lock member 19b.

When the change lever 15 is operated from the N range to the D range in order to start the vehicle, the solenoid 19a is de-energized and the lock member 19b enters the lock hole of the parking lever 18. FIG. The locked position is indicated by a two-dot chain line. Thereby, the rotation of the parking lever 18 is locked, and the parking lever 18 is held at the rotation position. Further, the change lever 15 and the parking lever 18 are separated from each other and are freely rotatable. Then, the change lever 15 is set to an A / M range that holds the D range, for example. Then, the Hall element 3 of the change lever position detection device 9 outputs the electrical select position signal value b corresponding to the select side magnetism in the A / M range, and the shift side magnetism in the A / M range. Correspondingly, an electrical shift position signal value d (same as the electrical shift position signal value d in the D range) is output. These electrical select position signal and electrical shift position signal are input to the range position signal input unit 7 of the TCU 5 as range position signals corresponding to the A / M range. The TCU 5 outputs a control signal corresponding to the A / M range to the transmission 4 from the shift control signal output unit 8 based on the input range position signal of the Hall element 3. Thereby, the shift shift of the transmission 4 is set to the A / M range, and the vehicle can start.

  When the change lever 15 is operated from the D range to the N range in the select direction in order to stop the vehicle and get off, the change lever 15 and the parking lever 18 are engaged in the rotational direction. Further, the solenoid 19a is excited and the lock member 19b is in the unlocked position. Thereby, the parking lever 18 becomes rotatable. When the change lever 15 becomes the N range and further rotates along the first shift train Si1 and is set to the P range, the parking lever 18 also rotates integrally with the change lever 15. Due to the rotation of the parking lever 18, the transmission lock means is operated and the transmission 4 is mechanically locked.

According to the position detection device 9 of the change lever 15 of this example, the CLU 10 having the same, and the position detection method of the change lever 15, the sensor characteristics of the Hall element are 3 Each electrical select position signal value output by the Hall element 3 in one range and each electrical shift position signal value output by the Hall element 3 in the three ranges in the shift direction of the change lever 15 are recorded in the memory 6. Of the change lever 15 by the approximate virtual straight lines α, α ′, β ₁ , β ₂ based on these corrected electrical select position signal values and electrical shift position signal values. Ranges (other than the three ranges in the select direction and the three ranges in the shift direction) and each of the change lever 15 The sensor characteristics complement the electrical shift position signal value and electrical select position signal value output by the Hall element 3 between the two. Thereby, it is possible to individually obtain desired sensor characteristics for each CLU 10.

  Further, since the sensor characteristics can be obtained individually as described above, it is possible to reduce sensor performance defects caused by variations of individual components such as the change lever 15 and variations caused by positional relations generated when the CLU 10 is assembled. It becomes possible. As a result, the yield of the position detection device 9 of the change lever 15 (that is, the defective rate is reduced) is improved.

  Further, even if such variations occur, the sensor characteristics of the Hall element 3 can be easily adjusted with high accuracy. As a result, the adjustment time of the sensor characteristics of the Hall element 3 can be shortened, and the position detection accuracy can be effectively improved. In addition, a 3D Hall element can be used as the Hall element 3, so that the degree of freedom in layout of the Hall element 3 is improved, wiring is simplified, and cost can be reduced.

  Furthermore, regardless of the positional relationship between the magnet 2 and the hall element 3, the sensor characteristics of the hall element 3 can be easily changed to desired characteristics. As a result, even if the product specification changes, it is possible to flexibly cope with the product specification change by changing the learning parameter corresponding to the specification change. Therefore, changes in the control program for the transmission 4 can be minimized.

  In addition, this invention is not limited to the above-mentioned example, A various design change is possible. For example, in the above-described example, the number of ranges to be detected or learned is set to three ranges at the shift position and the select position, respectively, but the shift pattern having a plurality of ranges other than the above example in the shift direction and the select direction. In this case, the number of ranges to be detected, that is, learned, can be set to any two or more ranges in both the shift direction and the select direction. In this case, it is desirable that the plurality of ranges to be detected, that is, learned, be set so that at least one of the plurality of ranges is adjacent to each other in all of the plurality of ranges. Also, the number of these ranges can be made different between the shift position and the select position. In short, various design changes are possible within the scope of the technical matters described in the claims.

  A change lever position detection device, a change lever unit including the change lever position detection method, and a change lever position detection method according to the present invention include a change lever that detects the position of a change lever that is operated to perform shift control of a vehicle transmission. The present invention relates to a technical field of a lever position detection device, a change lever unit including the same, and a change lever position detection method.

DESCRIPTION OF SYMBOLS 1 ... Shift control apparatus, 2 ... Magnet, 3 ... Hall element, 4 ... Transmission, 5 ... Electronic control part (TCU), 6 ... Memory, 7 ... Range position signal input part, 8 ... Shift control signal output part, 9 ... Change lever position detection device, 10 ... Change lever unit (CLU), 11 ... Unit body, 12 ... Case, 13 ... Shift rotation shaft, 14 ... Select rotation shaft, 15 ... Change lever, 16 ... Shift pattern hole , 17 ... Shift pattern, Si1 ... First shift column, Si2 ... Second shift column, Se ... Select column

Claims (4)

A magnet provided on a change lever that is selectively set to one of a plurality of ranges set respectively in the select direction and the shift direction;
Hall element that detects the magnetism of the magnet and outputs both an electrical select position signal corresponding to the select position of the change lever and an electrical shift position signal corresponding to the shift position of the change lever and having a memory And
The Hall element detects and outputs magnetism on the select side of the magnet when the change lever is set to an arbitrary first predetermined number of ranges in the select direction. The position signal value is recorded in the memory as a sensor characteristic value on the select side, and the magnet when the change lever is set to an arbitrary second predetermined number of ranges among the plurality of ranges in the shift direction. An electrical shift position signal value that is detected and output from the shift-side magnetism is recorded in the memory as a shift-side sensor characteristic value, and based on the recorded electrical select position signal value and the electrical shift position signal value The electrical select position signal value output between the ranges in the select direction and in a range other than the first predetermined number of ranges is complemented. Output converting mechanism, the position detecting device of the change lever and outputs to complement the electrical shift position signal value to be output in the range other than the shift direction of the range and between said second predetermined number range.   The hall element uses at least one of a select-side virtual straight line connecting adjacent electrical select position signal values and a select-side virtual extension line of the select-side virtual straight line, between the ranges in the select direction and the The shift-side virtual straight line and the shift-side virtual straight line connecting the adjacent electrical shift position signal values while complementing and outputting the electrical select position signal value output in a range other than the first predetermined number of ranges Using at least one of the shift-side virtual extension lines, and supplementing and outputting the electrical shift position signal value output between the ranges in the shift direction and in a range other than the second predetermined number of ranges. The position detection device for a change lever according to claim 1. A shift rotation axis and a select rotation axis provided orthogonal to each other;
A unit main body in which either one of the shift rotation shaft and the select rotation shaft is rotatably provided;
A change lever attached to one of the shift rotation shaft and the select rotation shaft;
A change lever position detecting device for detecting the position of the change lever at least;
3. The change lever unit according to claim 1, wherein the change lever position detection device is the change lever position detection device according to claim 1. A magnet provided on a change lever that is selectively set to one of a plurality of ranges set in the select direction and the shift direction, respectively, and the magnet of the magnet in the select direction in which the change lever is set The position of the change lever that detects the position of the change lever by the Hall element that outputs the electrical select position signal according to the range and the electrical shift position signal according to the range in the shift direction in which the change lever is set. A detection method,
Of the plurality of ranges in the select direction, the electrical select position signal value output by the hall element when the change lever is set to an arbitrary first predetermined number of ranges is used as the sensor characteristic value on the select side. Recorded in the Hall element memory,
Among the plurality of ranges in the shift direction, the electrical shift position signal value output by the Hall element when the change lever is set to an arbitrary second predetermined number of ranges is used as the sensor characteristic value on the shift side. Recorded in the memory of the Hall element,
Using at least one of a select-side virtual straight line connecting adjacent electrical select position signal values and a select-side virtual extension line of the select-side virtual straight line, between the ranges in the select direction and the first predetermined number The electrical select position signal value in a range other than the above range is complemented and output,
Using at least one of a shift-side virtual straight line connecting adjacent electrical shift position signal values and a shift-side virtual extension line of the shift-side virtual straight line, between the ranges in the shift direction and the second predetermined number By complementing and outputting the electrical shift position signal value in a range other than
A method for detecting a position of the change lever, wherein the position of the change lever is detected.

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