WO2023008311A1 - Dispositif de changement de vitesse - Google Patents

Dispositif de changement de vitesse Download PDF

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Publication number
WO2023008311A1
WO2023008311A1 PCT/JP2022/028371 JP2022028371W WO2023008311A1 WO 2023008311 A1 WO2023008311 A1 WO 2023008311A1 JP 2022028371 W JP2022028371 W JP 2022028371W WO 2023008311 A1 WO2023008311 A1 WO 2023008311A1
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WIPO (PCT)
Prior art keywords
coordinate data
axis direction
data
shift
shift lever
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Application number
PCT/JP2022/028371
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English (en)
Japanese (ja)
Inventor
薫 西口
信二 小池
繁 櫻井
崇 三ツ井
Original Assignee
ミネベアミツミ株式会社
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Application filed by ミネベアミツミ株式会社 filed Critical ミネベアミツミ株式会社
Priority to CN202280052191.9A priority Critical patent/CN117715780A/zh
Publication of WO2023008311A1 publication Critical patent/WO2023008311A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K20/00—Arrangement or mounting of change-speed gearing control devices in vehicles
    • B60K20/02—Arrangement or mounting of change-speed gearing control devices in vehicles of initiating means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques

Definitions

  • the present disclosure relates to a shift device.
  • a magnet that moves according to the swing of the shift lever in the shift direction and a magnetic sensor that detects changes in magnetic flux due to the movement of the magnet are provided, and the operating position of the shift lever in the shift direction is determined based on the detection result of the magnetic sensor.
  • a shift device that determines is known.
  • the present disclosure provides a shift device with improved accuracy in determining the operating position of the shift lever.
  • a shift lever As the shift lever is operated in the first operation direction, the shift lever moves along a first imaginary plane parallel to the XY plane along a trajectory substantially parallel to the X-axis direction, and the shift lever is operated in the second operation direction.
  • a magnet that moves along a second virtual plane different from the first virtual plane along a trajectory substantially parallel to the X-axis direction; a magnetic sensor that outputs spatial coordinate data that changes according to the position of the magnet; a determination circuit that determines the operating position of the shift lever based on the spatial coordinate data; The determination circuit is converting the spatial coordinate data into first angle data that is the declination angle of the ZX coordinate in the ZX orthogonal coordinate system and second angle data that is the declination angle of the ZY coordinate in the ZY orthogonal coordinate system; converting first coordinate data determined by the first angle data and the second angle data into second coordinate data on one quadrant of four quadrants of a two-dimensional orthogonal coordinate system; A shift device is provided that identifies the operating position according to the distance from the reference point of the two-dimensional orthogonal coordinate system to the second coordinate data.
  • FIG. 1 is a perspective view showing a shift device according to an embodiment with a harness and a housing removed;
  • FIG. FIG. 3 is a perspective view showing the main part of the shift device according to the embodiment from a different direction from that of FIG. 2;
  • 4 is an enlarged view of a part of the main part shown in FIG. 3;
  • FIG. FIG. 5 is a view showing a part of the main part shown in FIG. 4 from a different direction from that of FIG. 4 with the circuit board removed;
  • FIG. 4 is a perspective view showing a guide groove that guides the shift lever; It is a figure which shows typically the positional relationship of a magnetic sensor and a shift lever by the planar view in a Y-axis direction.
  • FIG. 3 is a perspective view showing the main part of the shift device according to the embodiment from a different direction from that of FIG. 2;
  • 4 is an enlarged view of a part of the main part shown in FIG. 3;
  • FIG. 5 is a view showing
  • FIG. 4 is a diagram schematically showing an operation of a shift lever in a select direction as viewed from the side in the X-axis direction;
  • FIG. 4 is a diagram for explaining a method of converting three-dimensional spatial coordinate data into two-dimensional coordinate data;
  • FIG. 3 is a diagram showing a first arrangement form of magnets that move in curved trajectories along the XY plane and the ZY plane, and magnetic sensors that are arranged along the X-axis direction when viewed from the front in the Z-axis direction;
  • FIG. 11 is a diagram showing a trajectory of two-dimensional coordinate data obtained by angle conversion of spatial coordinate data in the first arrangement form of FIG.
  • FIG. 10 A second arrangement form of magnets that move along the XY plane and the ZY plane along curved trajectories and magnetic sensors that are arranged tilted with respect to the X-axis direction and the Y-axis direction when viewed from the front in the Z-axis direction.
  • FIG. 4 is a diagram showing;
  • FIG. 13 is a diagram showing a trajectory of two-dimensional coordinate data obtained by angle conversion of spatial coordinate data in the second arrangement form of FIG. 12;
  • FIG. 4 is a diagram showing;
  • FIG. 13 is a diagram showing a trajectory of two-dimensional coordinate data obtained by angle conversion of spatial coordinate data in the second arrangement form of FIG. 12;
  • FIG. 4 is a diagram showing; 15 is a diagram showing the trajectory of two-dimensional coordinate data obtained by angle conversion of spatial coordinate data in the third arrangement form of FIG. 14;
  • FIG. FIG. 10 is a diagram for explaining a method of determining whether the operating position is the D side operating position or the M side operating position; It is a figure which shows the locus
  • FIG. 4 is a diagram for explaining a method of determining an operation position according to one-dimensional distance data r;
  • the X-axis direction, the Y-axis direction, and the Z-axis direction are orthogonal to each other.
  • the XY plane, ZY plane, and ZX plane are virtual planes parallel to the X-axis direction and Y-axis direction, virtual planes parallel to the Y-axis direction and Z-axis direction, and virtual planes parallel to the Z-axis direction and X-axis direction, respectively. represents Further, the movement of the magnet along the plane is not limited to the movement of the magnet completely parallel to the plane, and may include the movement of the magnet substantially parallel to the plane.
  • FIG. 1 is a perspective view showing a shift device according to one embodiment.
  • a shift device 1 shown in FIG. 1 is an operating device used in an automatic transmission or the like mounted on a vehicle.
  • the shift device 1 determines the operating position of the shift lever 11 by means of a magnetic sensor 21, which will be described later.
  • the range of the automatic transmission can be switched according to the operating position determined (specified) by the shift device 1 .
  • the shift device 1 includes a shift lever 11, a housing 10 and a harness 12.
  • the housing 10 accommodates internal components of the shift device 1 .
  • the harness 12 is a member for transmitting electrical signals between the internal circuit of the housing 10 and the external circuit of the housing 10 .
  • the harness 12 for example, transmits information on the operating position determined by a determination circuit 25 to be described later to an external circuit of the housing 10 .
  • the external circuit of the housing 10 outputs a signal for switching the range of the transmission according to the operating position indicated by the information acquired via the harness 12, for example.
  • the external circuit of the housing 10 causes the indicator to display the operating position indicated by the information acquired via the harness 12, for example.
  • FIG. 2 is a perspective view showing the shift device 1 shown in FIG. 1 with the harness 12 and the housing 10 removed.
  • the shift device 1 includes a shift lever 11 , a housing 10 and a harness 12 as well as a lever holder 16 , a base 13 and a circuit board 18 .
  • the shift lever 11 is a user-operable lever.
  • the shift lever 11 is held by the lever holder 16 and the housing 10 so as to be able to swing around a swing center 17 within the lever holder 16 .
  • the housing 10 holds the shift lever 11 swingably by holding a lever holder 16 in its substantially central portion.
  • the direction in which the shift lever 11 can swing is restricted to the direction guided by the guide groove 14 provided in the base 13 . Specifically, in a plan view in the Y-axis direction, the select direction in which the upper end of the shift lever 11 (the positive end in the Y-axis direction) moves along the Z-axis direction and the upper end of the shift lever 11 move along the Z-axis direction.
  • the direction in which the shift lever 11 can swing is regulated as well as the shift direction in which it moves along the X-axis direction.
  • the lever holder 16 is provided below (negative side in the Y-axis direction) with respect to the upper end (positive side end in the Y-axis direction) of the shift lever 11, and swings the shift lever 11 about a swing center 17 as a fulcrum. keep it possible.
  • the lever holder 16 is integrated with the shift lever 11 by inserting the shift lever 11 therein.
  • the lever holder 16 is generally formed in a substantially spherical shape.
  • the base 13 is a pedestal provided with guide grooves 14 .
  • the guide groove 14 guides the shift lever 11 to a plurality of operating positions.
  • a lower end 15 (negative end in the Y-axis direction) of the shift lever 11 is inserted into the guide groove 14 .
  • the circuit board 18 is arranged so that the board surface of the circuit board 18 is parallel to the XY plane.
  • the circuit board 18 is housed in the housing 10 .
  • FIG. 3 is a perspective view showing a main part of the shift device 1 shown in FIG. 2 from a different direction from that of FIG.
  • the shift device 1 has a magnetic sensor 21 and a determination circuit 25 .
  • the magnetic sensor 21 and determination circuit 25 are mounted on the circuit board 18 .
  • FIG. 4 is an enlarged view of a part of the main part shown in FIG.
  • FIG. 5 is a view showing a part of the main part shown in FIG. 4 from a different direction from FIG. 4 with the circuit board 18 removed.
  • the magnetic sensor 21 is arranged on the circuit board 18 as a detection member that detects the swinging direction of the shift lever 11 .
  • the magnetic sensor 21 is arranged at a position capable of facing the magnet 19 (see FIG. 5) held by the magnet holder 20 .
  • the magnetic sensor 21 detects the strength (or magnetic flux density) of the magnetic field generated by the magnet 19 and the orientation of the magnetic field using a Hall element.
  • the magnetic sensor 21 is a three-dimensional magnetic sensor that detects changes in the magnetic field vector by the magnet 19 and outputs spatial coordinate data that changes according to the position of the magnet 19 .
  • the magnetic sensor 21 detects a magnetic field component Bx representing the X-axis direction component of the magnetic field intensity, a magnetic field component By representing the Y-axis direction component of the magnetic field intensity, and a magnetic field component representing the Z-axis direction component of the magnetic field intensity. Detect Bz.
  • the magnetic sensor 21 outputs the detected magnetic field components Bx, By, Bz as spatial coordinate data (Bx, By, Bz).
  • the format in which the magnetic sensor 21 outputs the spatial coordinate data (Bx, By, Bz) is not particularly limited, but examples include serial communication, pulse width modulation, analog voltage, and the like.
  • the magnetic sensor 21 detects magnetic field components Bx, By, and Bz according to three mutually orthogonal reference directions.
  • the magnetic sensor 21 is, for example, an integrated circuit molded into a substantially rectangular parallelepiped shape.
  • the magnetic sensor 21 outputs the magnetic field vector component detected in the longitudinal direction of the magnetic sensor 21 as the magnetic field component Bx, and outputs the magnetic field vector component detected in the lateral direction of the magnetic sensor 21 as the magnetic field component By , and the magnetic field vector component detected in the height direction (thickness direction) of the magnetic sensor 21 is output as the magnetic field component Bz.
  • the number of magnetic sensors 21 is not limited to one, and may be plural in order to ensure sensor redundancy.
  • two magnetic sensors 21A, 21B are shown.
  • Both of the magnetic sensors 21A and 21B are three-dimensional magnetic sensors that output spatial coordinate data that change according to the position of the magnet 19.
  • the magnet holder 20 is a part integrated with the shift lever 11 and the lever holder 16.
  • the magnet holder 20 protrudes from the lever holder 16 to the positive side in the Z-axis direction so as to be perpendicular to the shift lever 11 .
  • the magnet holder 20 holds the magnet 19 arranged at the tip on the positive side in the Z-axis direction.
  • the magnet 19 is fixed to the tip of the magnet holder 20 on the positive side in the Z-axis direction by a non-magnetic clip 26 .
  • the magnet 19 has one of its N pole and S pole magnetized on the first main surface facing the magnetic sensor 21, and the other magnetic pole on the second main surface opposite to the first main surface. magnetized. Alternatively, it may be magnetized such that the N pole and S pole face the magnetic sensor 21 . In this case, since the magnetic flux changes sharply at the boundary between the poles, it is conceivable to design the detection logic in consideration of this change, or to use only the regions in which the directions of the magnetic lines of force are the same.
  • the magnet 19 is cylindrical in shape, it may be ring-shaped, angular, spherical, or the like.
  • the determination circuit 25 determines the operating position of the shift lever 11 based on the spatial coordinate data (Bx, By, Bz) output from the magnetic sensor 21.
  • the determination circuit 25 may determine the operation position using a known determination method, or may determine the operation position using a determination method described later.
  • the determination circuit 25 is, for example, a microcomputer having a memory and a processor such as a CPU (Central Processing Unit).
  • the function of the determination circuit 25 is realized by the processor operating according to the program stored in the memory.
  • the function of the determination circuit 25 may be realized by FPGA (Field Programmable Gate Array) or ASIC (Application Specific Integrated Circuit).
  • FIG. 6 is a perspective view showing the guide groove 14 that guides the shift lever 11.
  • the guide groove 14 is formed on the surface of the base 13 on the positive side in the Y-axis direction.
  • the guide groove 14 is a groove that opens upward (positive side in the Y-axis direction), and is formed in a substantially H shape in a plan view in the Y-axis direction.
  • the guide groove 14 includes a first shift groove 22 extending substantially in the X-axis direction and a second shift groove 23 extending substantially in the X-axis direction on the negative side of the first shift groove 22 in the Z-axis direction. , and a select groove 24 extending substantially in the Z-axis direction.
  • the select groove 24 connects intermediate portions of the first shift groove 22 and the second shift groove 23 in the X-axis direction.
  • the first shift groove 22, the second shift groove 23, and the select groove 24 guide the lower end portion 15 of the shift lever 11 so that the shift lever 11 can swing about the swing center 17 in the select direction or the shift direction. .
  • the guide grooves 14 are, for example, R position (reverse), D position (driving), H position (home position, neutral position), M position (manual operation position), + position (shift up), - position (shift down). guides the lower end portion 15 of the shift lever 11 so as to restrict the swinging range of the shift lever 11 to the shift position of .
  • the shift lever 11 is operated to the D side operating position (R position, D position, H position, etc.)
  • the lower end portion 15 moves along the first shift groove 22 in the shift direction.
  • M side operating position M position, + position, - position, etc.
  • the lower end portion 15 moves along the second shift groove 23 in the shift direction.
  • the shift lever 11 is operated between the D-side operating position arrangement and the M-side operating position arrangement, the lower end portion 15 moves along the select groove 24 in the select direction.
  • FIG. 7 is a diagram schematically showing the positional relationship between the magnetic sensor 21 and the shift lever 11 in plan view in the Y-axis direction.
  • FIG. 8 is a diagram schematically showing the operation of the shift lever in the select direction as viewed from the side in the X-axis direction.
  • the magnet 19 moves along the first imaginary plane p1 parallel to the XY plane. along a trajectory substantially parallel to the X-axis direction.
  • the shift lever 11 moves in the D side shift direction
  • the shift lever 11 swings (rotates) about the swing center 17 along the XY plane passing through the swing center 17 .
  • the magnet 19 moves along the first imaginary plane p1 along a trajectory substantially parallel to the X-axis direction.
  • the D side shift direction is an example of the first operation direction of the shift lever 11 .
  • the magnet 19 moves to the second virtual plane p1, which is different from the first imaginary plane p1. It moves on a trajectory substantially parallel to the X-axis direction along the virtual plane p2.
  • the second virtual plane p2 is inclined (intersects) with respect to the first virtual plane p1 in this example.
  • the shift lever 11 moves in the M side shift direction
  • the shift lever 11 is tilted to the positive side in the Z-axis direction with respect to the XY plane passing through the swing center 17, and the swing center 17 is used as a fulcrum. Swing (rotate).
  • the shift lever 11 rotates in this way, the magnet 19 moves in a locus substantially parallel to the X-axis direction along the second imaginary plane p2.
  • the M side shift direction is an example of the second operation direction of the shift lever 11 .
  • the shift lever 11 moves in the select direction from the arrangement of the M-side operating positions to the arrangement of the D-side operating positions or from the arrangement of the D-side operating positions to the arrangement of the M-side operating positions, the shift lever 11 moves around the pivot center 17. It swings (rotates) about the swing center 17 along the ZY plane through which it passes. When the shift lever 11 rotates in this way, the magnet 19 moves in a curved trajectory along the ZY plane passing through the swing center 17 .
  • the select direction is an example of a third operation direction of the shift lever 11 .
  • the length of the Z-axis direction component of the distance from the magnetic sensor 21 to the magnet 19 positioned along the first virtual plane p1 before the operation in the select direction is the second distance after the operation in the select direction from the magnetic sensor 21. It is shorter than the length of the Z-axis direction component of the distance to the magnet 19 positioned along the virtual plane p2.
  • the magnetic sensor 21 outputs first spatial coordinate data (Bx1, By1, Bz1) corresponding to the position of the magnet 19 moving on a trajectory substantially parallel to the X-axis direction along the first virtual plane p1.
  • the determination circuit 25 specifies (determines) the operation position corresponding to the first spatial coordinate data (Bx1, By1, Bz1) acquired from the magnetic sensor 21 among the D side operation positions (R position, D position, H position, etc.). )do.
  • the magnetic sensor 21 outputs second spatial coordinate data (Bx2, By2, Bz2) corresponding to the position of the magnet 19 moving on a trajectory substantially parallel to the X-axis direction along the second virtual plane p2.
  • the determination circuit 25 specifies (determines) the operation position corresponding to the second spatial coordinate data (Bx2, By2, Bz2) acquired from the magnetic sensor 21 among the M side operation positions (M position, + position, - position, etc.). )do.
  • FIG. 9 is a diagram for explaining a method of converting three-dimensional spatial coordinate data into two-dimensional coordinate data.
  • the determination circuit 25 converts the three-dimensional spatial coordinate data B (Bx, By, Bz) output from the magnetic sensor 21 into two-dimensional first coordinate data ( ⁇ , ⁇ ).
  • the first angle data ⁇ is the declination angle of the ZX coordinates (Bz, Bx) in the ZX orthogonal coordinate system.
  • the first angle data ⁇ is a half line extending from the origin O of the ZX orthogonal coordinate system to the positive side of the Z axis, and a half line (two-dimensional vector) extending from the origin O of the ZX orthogonal coordinate system to the ZX coordinates (Bz, Bx). represents the angle between
  • a relational expression is established. "atan2" is the arctangent function that takes two arguments.
  • the determination circuit 25 calculates the first angle data ⁇ by Equation 1 based on the magnetic field component Bz in the Z-axis direction and the magnetic field component Bx in the X-axis direction detected by the magnetic sensor 21, for example.
  • the second angle data ⁇ is the declination angle of the ZY coordinates (Bz, By) in the ZY orthogonal coordinate system. That is, the second angle data ⁇ consists of a half line extending from the origin O of the ZY orthogonal coordinate system to the positive side of the Z axis, and a half line extending from the origin O of the ZY orthogonal coordinate system to the ZY coordinates (Bz, By) (two-dimensional vector).
  • the determination circuit 25 calculates the second angle data ⁇ by Equation 2 based on the magnetic field component Bz in the Z-axis direction and the magnetic field component By in the Y-axis direction detected by the magnetic sensor 21, for example.
  • the two-dimensional first coordinate data ( ⁇ , ⁇ ) determined by the first angle data ⁇ and the second angle data ⁇ are coordinate data corresponding to the position of the magnet 19 and coordinate data corresponding to the operating position of the shift lever 11. is. Therefore, the determination circuit 25 can determine (specify) the operation position corresponding to the two-dimensional first coordinate data ( ⁇ , ⁇ ) determined by the first angle data ⁇ and the second angle data ⁇ among the plurality of operation positions. .
  • the accuracy of determining the operating position may be degraded.
  • FIG. 10 shows the magnet 19 moving along the XY plane and the ZY plane along a curved trajectory, and the magnetic sensor 21 (21A, 21B) arranged along the X-axis direction when viewed from the front in the Z-axis direction. It is a figure which shows a 1st arrangement
  • the magnetic sensors 21 (21A, 21B) are arranged so that the detection reference direction of the magnetic field component Bx is parallel to the X-axis direction.
  • the magnet 19 moves along the XY plane (first imaginary plane p1) along a trajectory t1 substantially parallel to the X-axis direction (a trajectory slightly curved in the Y-axis direction).
  • the range in which the magnet 19 moves in the Y-axis direction is narrower than the range in which the magnet 19 moves in the X-axis direction. Therefore, in the form of FIG. 10 in which the magnetic sensor 21 is arranged along the X-axis direction when viewed from the front in the Z-axis direction, when the magnet 19 moves along the trajectory t1, the range in which the first angle data ⁇ fluctuates is While it is relatively wide, the range in which the second angle data ⁇ fluctuates is narrow (see FIG. 11).
  • FIG. 11 shows the first two-dimensional coordinate data ( ⁇ , ⁇ ). Plotted points on the trajectory shown in FIG. 11 correspond to respective operation positions. As shown in FIG. 11, when the operating position changes in the D side shift direction and when the operating position changes in the M side shift direction, the change width of the second angle data ⁇ is greater than the change width of the first angle data ⁇ . is also narrow. Therefore, in the first arrangement form of FIG. 10, the accuracy with which the determination circuit 25 determines the operating position of the shift lever 11 based on the first coordinate data ( ⁇ , ⁇ ) may decrease.
  • FIG. 12 shows a magnet 19 that moves in a curved trajectory along the XY plane and the ZY plane, and a magnetic sensor 21 ( 21A, 21B) and a second arrangement form.
  • the magnetic sensor 21 (21A, 21B) is arranged such that the detection reference direction of the magnetic field component Bx is inclined with respect to the X-axis direction and the Y-axis direction.
  • the magnet 19 moves along the XY plane (first imaginary plane p1) along a trajectory t1 substantially parallel to the X-axis direction (a trajectory slightly curved in the Y-axis direction).
  • the range in which the magnet 19 moves in the Y-axis direction is narrower than the range in which the magnet 19 moves in the X-axis direction.
  • the first angle data ⁇ and the range in which the second angle data ⁇ fluctuates are relatively wide (see FIG. 13).
  • FIG. 13 shows two-dimensional first coordinate data ( ⁇ , ⁇ ). Plotted points on the trajectory shown in FIG. 13 correspond to respective operation positions. As shown in FIG. 13, both when the operating position changes in the D side shift direction and when the operating position changes in the M side shift direction, the change width of the first angle data ⁇ and the change width of the second angle data ⁇ are wide. Therefore, in the second arrangement form of FIG. 12, the determination circuit 25 can determine the operation position corresponding to the first coordinate data ( ⁇ , ⁇ ) with high accuracy. For example, the possibility of erroneously determining the operating position of the shift lever 11 as an operating position adjacent to the actual operating position is reduced, and a decrease in the accuracy of determining the operating position is suppressed.
  • FIG. 14 shows a magnet 19 that moves in a curved trajectory along the XY plane and the ZY plane, and a magnetic sensor 21 ( 21A, 21B) and a third configuration.
  • the magnetic sensor 21 (21A, 21B) is arranged such that the detection reference direction of the magnetic field component Bx is inclined with respect to the X-axis direction and the Y-axis direction.
  • the magnet 19 moves along the XY plane (first imaginary plane p1) along a trajectory t1 substantially parallel to the X-axis direction (a trajectory slightly curved in the Y-axis direction).
  • the range in which the magnet 19 moves in the Y-axis direction is narrower than the range in which the magnet 19 moves in the X-axis direction.
  • the first angle data ⁇ and the range in which the second angle data ⁇ fluctuates are relatively wide (see FIG. 15).
  • FIG. 15 shows the first two-dimensional coordinate data ( ⁇ , ⁇ ). Plotted points on the trajectory shown in FIG. 15 correspond to respective operation positions. As shown in FIG. 15, both when the operating position changes in the D side shift direction and when the operating position changes in the M side shift direction, the change width of the first angle data ⁇ and the change width of the second angle data ⁇ are wide. Therefore, in the third arrangement form of FIG. 14, the determination circuit 25 can determine the operation position corresponding to the first coordinate data ( ⁇ , ⁇ ) with high accuracy. For example, the possibility of erroneously determining the operating position of the shift lever 11 as an operating position adjacent to the actual operating position is reduced, and a decrease in the accuracy of determining the operating position is suppressed.
  • the magnetic sensor 21 is arranged in the X-axis direction when viewed from the front in the Z-axis direction in order to suppress deterioration in the accuracy of determination of the operating position based on the first coordinate data ( ⁇ , ⁇ ). and the Y-axis direction by 10° or more.
  • the magnetic sensor 21 is preferably arranged at an angle of 20° or more with respect to each of the X-axis direction and the Y-axis direction when viewed from the front in the Z-axis direction, and more preferably at an angle of 30° or more. is more preferred. 12 and 14, the magnetic sensor 21 is arranged at an angle of 45° with respect to each of the X-axis direction and the Y-axis direction when viewed from the front in the Z-axis direction.
  • the magnetic sensor 21 is arranged so that at least a portion of the magnetic sensor 21 overlaps with the magnet 19 when the shift lever 11 is in the predetermined operating position as described above when viewed from the front in the Z-axis direction. .
  • the magnetic sensor 21 is arranged in a region where the magnetic flux density is relatively high, so the detection accuracy of the magnetic field vector of the magnet 19 is improved. Therefore, the determination circuit 25 can determine the operating position of the shift lever 11 with high accuracy based on the first coordinate data ( ⁇ , ⁇ ) obtained by the magnetic sensor 21 .
  • the magnetic sensor 21 is arranged so that the outer shape of the magnetic sensor 21 does not protrude from the magnet 19 when viewed from the front in the Z-axis direction. As a result, the magnetic sensor 21 is arranged in a region where the magnetic flux density is higher, so the detection accuracy of the magnetic field vector of the magnet 19 is improved. Therefore, the determination circuit 25 can more accurately determine the operating position of the shift lever 11 based on the first coordinate data ( ⁇ , ⁇ ) obtained by the magnetic sensor 21 .
  • the plurality of magnetic sensors 21A and 21B are arranged so that the outer shapes of the plurality of magnetic sensors 21A and 21B do not protrude from the magnet 19 when viewed from the front in the Z-axis direction.
  • both the magnetic sensor 21A and the magnetic sensor 21B are arranged in a region where the magnetic flux density is higher, so the detection accuracy of the magnetic field vector of the magnet 19 is improved. Therefore, the determination circuit 25 can more accurately determine the operating position of the shift lever 11 based on the first coordinate data ( ⁇ , ⁇ ) obtained by the magnetic sensor 21 .
  • the range in which the plotted points representing the D-side operating position fluctuate is wider than the range in which the plotted points representing the M-side operating position fluctuate. That is, the magnet 19 moves along the second virtual plane p2 along a trajectory substantially parallel to the X-axis direction in the first range in which the magnet 19 moves along the first virtual plane p1 along a trajectory substantially parallel to the X-axis direction. may be wider than the second range for
  • the first range is an example of the range in which the magnet 19 moves before the shift lever 11 is operated in the select direction (an example of the third operation direction). In the examples shown in FIGS. This corresponds to the range over which the magnet 19 moves when moving in the side shift direction.
  • the second range is an example of the range in which the magnet 19 moves after the shift lever 11 is operated in the select direction. In the examples shown in FIGS. 19 corresponds to the moving range.
  • the shortest distance d1 from the center 19d of the magnet 19 positioned along the first imaginary plane p1 on the D side to the magnetic sensor 21 in a front view in the Z-axis direction is 2 It is longer than the shortest distance d2 from the center 19m of the magnet 19 located along the virtual plane p2 to the magnetic sensor 21 . If the shortest distance d1 is longer than the shortest distance d2, as shown in FIG. 15, the trajectory of the plurality of plotted points representing the D-side operating position will be greatly curved, and the determination accuracy of the D-side operating position may decrease. be.
  • a method of determining an operation position using linear approximation may result in a decrease in the accuracy of determination of the D-side operation position.
  • the shortest distance d1 from the center 19d of the magnet 19 positioned along the first imaginary plane p1 on the D side to the magnetic sensor 21 in front view in the Z-axis direction is It is shorter than the shortest distance d2 from the center 19m of the magnet 19 located along the second imaginary plane p2 on the M side to the magnetic sensor 21 .
  • the trajectory of the plurality of plotted points representing the M-side operating position approaches a straight line
  • the trajectory of the plurality of plotted points representing the D-side operating position also approaches a straight line. approach a straight line.
  • the magnetic sensors 21 are located along the first imaginary plane p1 on the D side from the magnet 19 positioned along the first virtual plane p1 on the D side in a front view in the Z-axis direction. It is arranged so that the outer shape does not protrude.
  • the magnetic sensor 21 is arranged in a region with a higher magnetic flux density, the detection accuracy of the magnetic field vector of the magnet 19 is improved, and the deterioration of the determination accuracy of the D side operation position and the M side operation position can be further suppressed. can be done.
  • the determination circuit 25 converts the three-dimensional spatial coordinate data B (Bx, By, Bz) output from the magnetic sensor 21 into a two-dimensional first coordinate data determined by the first angle data ⁇ and the second angle data ⁇ . Convert to coordinate data ( ⁇ , ⁇ ).
  • the determination circuit 25 calculates the first angle data ⁇ and the second angle data ⁇ using the above equations 1 and 2, and the first coordinate data ( ⁇ , ⁇ ) representing the position of the operating position in two-dimensional data. to derive
  • both the trajectory of the plurality of plot points representing the D-side operating positions and the trajectory of the plurality of plot points representing the M-side operating positions approximate a straight line.
  • the first coordinate data ( ⁇ , ⁇ ) transitions along the primary approximate straight line L1
  • the shift lever 11 is moved in the M side shift direction.
  • the first coordinate data ( ⁇ , ⁇ ) transitions along the first-order approximation straight line L2.
  • the determination circuit 25 determines whether the operating position of the shift lever 11 is the operating position in the D side shift direction (D side operating position) according to the region where the first coordinate data ( ⁇ , ⁇ ) is located in the ⁇ orthogonal coordinate system. It is determined whether the operation position is in the side shift direction (M side operation position). For example, the determination circuit 25 compares the first coordinate data ( ⁇ , ⁇ ) derived in step S10 with a predetermined intermediate line L3 (see FIG. 16) to determine whether the operating position of the shift lever 11 is the D side operating position. or the M side operation position.
  • the intermediate line L3 is an example of a threshold line that partitions the two-dimensional orthogonal coordinate system, and in this example, is a linear straight line with a slope Aj and an intercept Bj.
  • the two coefficients Aj and Bj that determine the intermediate line L3 are values derived in advance by prior calibration. Pre-calibration for deriving intermediate line L3 (coefficients Aj, Bj) will be described later.
  • the determination circuit 25 determines whether the first coordinate data ( ⁇ , ⁇ ) derived in step S10 is in the area (D side area) where the D side operation positions are distributed with respect to the intermediate line L3, and whether the M side operation position is It is determined whether it is in the distributed area (M side area). In the example shown in FIG. 16, regarding the first coordinate data ( ⁇ , ⁇ ) derived in step S10, if " ⁇ -(Aj ⁇ +Bj)" is a positive value, the determination circuit 25 determines the current position of the shift lever 11. The operating position is determined to be the D side operating position.
  • the determination circuit 25 determines that the current operating position of the shift lever 11 is the M side. Determined as the operating position.
  • the determination circuit 25 converts the first coordinate data ( ⁇ , ⁇ ) derived in step S10 into second coordinate data ( ⁇ C , ⁇ C ) on one of the four quadrants of the ⁇ two-dimensional orthogonal coordinate system.
  • Read the calibration value for FIG. 17 illustrates a case where first coordinate data ( ⁇ , ⁇ ) is converted into second coordinate data ( ⁇ C , ⁇ C ) on the first quadrant by the calibration values read in step S30.
  • the first coordinate data ( ⁇ , ⁇ ) is converted into second coordinate data ( ⁇ C , ⁇ C ) on one of the second, third and fourth quadrants.
  • the determination circuit 25 reads the first calibration value for calibration of the D side operation position when it is determined to be the D side operation position in step S20. On the other hand, when the determination circuit 25 determines that the position is the M side operation position in step S20, the determination circuit 25 reads the second calibration value for calibration of the M side operation position.
  • Step S40 (correction by calibration value)>
  • the determination circuit 25 corrects the first angle data ⁇ and the second angle data ⁇ derived in step S10 using the calibration values a, b, and k read in step S30 using the following correction formulas c1 and c2.
  • First coordinate data ( ⁇ , ⁇ ) are converted into second coordinate data ( ⁇ C , ⁇ C ).
  • the correction formulas c1 and c2 are applied to a plurality of first coordinate data ( ⁇ , ⁇ ) positioned along a first-order approximation straight line L of the ⁇ two-dimensional orthogonal coordinate system. It is a correction formula for converting into a plurality of second coordinate data ( ⁇ C , ⁇ C ) located in the first quadrant along the first-order approximate straight line L C of 1.
  • Step S50 conversion to one-dimensional data (distance from origin O)>
  • Step S60 determination of operation position
  • the determination circuit 25 derives the distance data r from among the plurality of operating positions in step S50.
  • the operation position corresponding to the obtained distance data r can be specified.
  • the determination circuit 25 identifies (determines) the operating position of the shift lever 11 according to the distance data r derived in step S50.
  • FIG. 18 is a diagram for explaining a method of determining an operating position according to one-dimensional distance data r.
  • FIG. 18 illustrates a case where the current operating position of the shift lever 11 is identified from among the three M side operating positions of the M position, + position and - position.
  • the determination circuit 25 determines which of the three M-side operating positions the shift lever 11 is operating in accordance with the magnitude of the distance data r derived in step S50. For example, the determination circuit 25 compares the distance data r derived in step S50 with a plurality of different determination threshold values to determine which of the three M side operation positions the shift lever 11 is operated. determine.
  • the multiple different determination thresholds are predetermined values.
  • the different determination thresholds are also changed. Therefore, different decision thresholds are determined after the calibration values are derived.
  • the determination circuit 25 determines the + position when the distance data r is less than the first determination threshold, and M If the distance data r is greater than or equal to the second determination threshold value, it is determined as a -position. Similarly, the determination circuit 25 determines the D side operating position.
  • the determination circuit 25 converts the distance data r in the operation in the D side shift direction to a first threshold value (for example, the above-mentioned first decision threshold and second decision threshold).
  • the determination circuit 25 identifies the D-side operation position by comparing the distance data r for the operation in the D-side shift direction with the first threshold value.
  • the distance data r at the time of operation in the M side shift direction is used as a second threshold value (for example, the above-described first determination threshold and second decision threshold).
  • the determination circuit 25 identifies the M-side operation position by comparing the distance data r for the operation in the M-side shift direction with the second threshold value.
  • the operation position determination algorithm can be constructed simply.
  • the origin O is an example of a reference point of the ⁇ two-dimensional orthogonal coordinate system.
  • the determination circuit 25 determines the operating position according to the distance data r from the origin O, but it does not determine the operating position according to the distance data r from a point near the origin O (another example of the reference point).
  • Pre-calibration is preferably performed on each shift device, but the results of pre-calibration performed on some shift devices may be reflected on other shift devices.
  • the determination circuit 25 acquires the spatial coordinate data (Bx, By, Bz) of all the operating positions from the magnetic sensor 21, and determines the first coordinate data ( ⁇ , ⁇ ) of the plurality of D side operating positions and the plurality of M side operating positions. First coordinate data ( ⁇ , ⁇ ) of the operating position are derived.
  • the determination circuit 25 derives an approximate straight line L1 by linearly approximating the trajectories of the first coordinate data ( ⁇ , ⁇ ) of the plurality of D-side operation positions, and calculates the first coordinate data ( ⁇ , ⁇ ) of the plurality of M-side operation positions.
  • An approximate straight line L2 is derived by linearly approximating the trajectory of ⁇ ).
  • the determination circuit 25 sets a straight line sandwiched between the approximate straight line L1 and the approximate straight line L2 in a predetermined ⁇ plane as an intermediate line L3.
  • the determination circuit 25 determines two coefficients Aj and Bj that specify the intermediate line L3 such that the intermediate line L3 is a line segment sandwiched between the approximate straight lines L1 and L2 in the predetermined ⁇ plane. do.
  • the determination circuit 25 linearly approximates the trajectory of the first coordinate data ( ⁇ , ⁇ ) of the plurality of D-side operation positions to derive the slope a and the intercept b of the approximate straight line L1. Then, the determination circuit 25 converts the plurality of first coordinate data ( ⁇ , ⁇ ) located along the approximation straight line L1 to the plurality of second coordinates located in the first quadrant along the primary first approximation straight line LC1. Derive the first calibration values a,b,k to convert to the data ( ⁇ C , ⁇ C ).
  • the linear first approximation line L C1 is a line segment passing through the origin O and having a slope of 1.
  • k is a calibration value for correcting so that the plurality of second coordinate data ( ⁇ C , ⁇ C ) exist in the first quadrant.
  • the above correction equations c1, c2 for the calibration of the D-side operating position are defined by the first calibration values a, b, k.
  • the determination circuit 25 derives the slope a and the intercept b of the approximation straight line L2 by linearly approximating the trajectories of the first coordinate data ( ⁇ , ⁇ ) of the plurality of M-side operation positions. Then, the determination circuit 25 converts the plurality of first coordinate data ( ⁇ , ⁇ ) located along the approximation straight line L2 to the plurality of second coordinates located in the first quadrant along the primary second approximation straight line LC2. Derive the second calibration values a,b,k to convert to the data ( ⁇ C , ⁇ C ).
  • the linear second approximation line L C2 is a line segment passing through the origin O and having a slope of 1.
  • k is a calibration value for correcting so that the plurality of second coordinate data ( ⁇ C , ⁇ C ) exist in the first quadrant.
  • the correction formulas c1 and c2 for calibrating the M-side operating position are defined by the second calibration values a, b, and k.
  • the shift device is not limited to a transmission, and may be applied to a combination switch device such as a turn signal switch device or a wiper switch device.
  • the magnetic sensor is not limited to a sensor using a Hall element, and may be a sensor using other elements such as a magnetoresistive element.
  • X for the X axis
  • Y for the Y axis
  • Z for the Z axis
  • the direction substantially parallel to the direction in which the magnet moves as the shift lever is operated in the first operating direction or the second operating direction is simply defined as the X-axis direction.
  • the XY plane is simply defined as a plane substantially parallel to the direction in which the magnet moves along with the operation in the operating direction
  • the Z-axis direction is defined as the direction perpendicular to the XY plane.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (AREA)

Abstract

Un dispositif de changement de vitesse de l'invention comprend : un levier de changement de vitesse ; un aimant qui, accompagnant un fonctionnement du levier de changement de vitesse dans une première direction de fonctionnement, se déplace dans une trajectoire sensiblement parallèle à la direction de l'axe x le long d'un premier plan virtuel qui est parallèle à un plan XY et, accompagnant le fonctionnement du levier de changement de vitesse dans une seconde direction de fonctionnement, se déplace dans une trajectoire sensiblement parallèle à la direction de l'axe x le long d'un second plan virtuel qui est différent du premier plan virtuel ; un capteur magnétique qui délivre des données de coordonnées spatiales qui changent en fonction de la position de l'aimant ; et un circuit de détermination, le circuit de détermination convertissant les données de coordonnées spatiales en premières données de coordonnées déterminées à l'aide de premières données d'angle, à savoir l'argument de coordonnées ZX dans un système de coordonnées orthogonales ZX, et de secondes données d'angle, à savoir l'argument de coordonnées ZY dans un système de coordonnées orthogonales ZY, convertissant les premières données de coordonnées en secondes données de coordonnées dans un quadrant unique d'un système de coordonnées orthogonales bidimensionnel, et spécifiant la position de fonctionnement du levier de changement de vitesse en fonction de la distance entre un point de référence dans le système de coordonnées orthogonales bidimensionnel et les secondes données de coordonnées.
PCT/JP2022/028371 2021-07-30 2022-07-21 Dispositif de changement de vitesse WO2023008311A1 (fr)

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JP2021125715A JP2023020387A (ja) 2021-07-30 2021-07-30 シフト装置

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010066215A1 (fr) * 2008-12-11 2010-06-17 Lemförder Electronic GmbH Dispositif à levier sélecteur pour un véhicule à moteur
JP2011163782A (ja) * 2010-02-04 2011-08-25 Tokai Rika Co Ltd 操作位置検出装置
JP2019064312A (ja) * 2017-09-28 2019-04-25 小島プレス工業株式会社 シフトレバー位置検出装置
JP2019089540A (ja) * 2017-11-13 2019-06-13 フィコ トリアド， ソシエダッド アノニマＦｉｃｏ Ｔｒｉａｄ， Ｓ．Ａ． シフター・アセンブリ
DE102017131144A1 (de) * 2017-12-22 2019-06-27 Preh Gmbh Betriebsarten-Wähleinrichtung für ein Fahrzeuggetriebe mit 3D-Hallsensor
WO2019142522A1 (fr) * 2018-01-16 2019-07-25 津田工業株式会社 Dispositif de changement de vitesse

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010066215A1 (fr) * 2008-12-11 2010-06-17 Lemförder Electronic GmbH Dispositif à levier sélecteur pour un véhicule à moteur
JP2011163782A (ja) * 2010-02-04 2011-08-25 Tokai Rika Co Ltd 操作位置検出装置
JP2019064312A (ja) * 2017-09-28 2019-04-25 小島プレス工業株式会社 シフトレバー位置検出装置
JP2019089540A (ja) * 2017-11-13 2019-06-13 フィコ トリアド， ソシエダッド アノニマＦｉｃｏ Ｔｒｉａｄ， Ｓ．Ａ． シフター・アセンブリ
DE102017131144A1 (de) * 2017-12-22 2019-06-27 Preh Gmbh Betriebsarten-Wähleinrichtung für ein Fahrzeuggetriebe mit 3D-Hallsensor
WO2019142522A1 (fr) * 2018-01-16 2019-07-25 津田工業株式会社 Dispositif de changement de vitesse

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