JP2013103668A - Shift lever device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shift lever device made compatible in both detection properties in mutually orthogonal operation directions of a shift direction and a select direction.SOLUTION: A shift lever device 1 includes a magnet 230 which turns around a shift shaft 20 when operated in the shift direction and also turns around a select shaft when operated in the select direction; and a magnetic sensor 11 for detecting the magnetic action direction of the magnet 230. The magnetic sensor 11 is arranged at a place closer to the magnet 230 side rather than the shift shaft 20 and the select shaft, and a sensor position ratio L1/L2 that is a ratio of a distance L1 to the magnetic sensor 11 from the shaft with respect to a distance L2 from the magnet 230 to the shaft is different between the shift shaft 20 and the select shaft, and the sensor position ratio concerning a shaft corresponding to the operation direction having a larger operating stroke in the shift direction and the select direction is set smaller.

Description

  The present invention relates to a shift lever device that is mounted on a vehicle to select a shift range of a vehicle and outputs an electrical signal in response to an operation of the shift lever.

  Conventionally, shift change means employing a mechanical link mechanism have been often used in vehicle shift lever devices. In recent years, a shift lever device that electrically detects the operation of a shift lever has been proposed so as to meet the demand for computerization of in-vehicle devices. This shift lever device converts the detected operation of the shift lever into an electrical signal and outputs it.

  The shift lever device as described above is called a so-called by-wire type shift lever device that realizes a shift change by driving an actuator in accordance with the output signal. In the by-wire type shift lever device, it is not necessary to provide a complicated link mechanism with the transmission, and it is only necessary to route the electrical wiring. By adopting such a shift lever device, the degree of freedom of design and installation of the shift operation mechanism in the vehicle can be significantly improved.

  The by-wire type shift lever device includes a guide rod that extends beyond the central axis of the pivoting operation of the shift lever and holds the magnet at the tip, and a magnetic sensor arranged so as to face the magnet. Have been proposed (see, for example, Patent Document 1). In this shift lever device, the operation position is detected by detecting the displacement of the guide rod when the shift lever is operated in the shift direction and the select direction orthogonal to each other.

  However, the conventional shift lever device has the following problems. That is, as the detection means for the shift direction and the detection means for the select direction, the detection means combining the magnet and the magnetic sensor is shared, so that both the detection characteristics in the shift direction and the select direction can be ideally made compatible. There is a problem that it is difficult and some compromise is inevitable.

JP 2007-223384 A

  The present invention has been made in view of the above-described conventional problems, and is a by-wire type shift lever device that can be operated in a shift direction and a selection direction orthogonal to each other, and includes detection characteristics in the shift direction and detection in the selection direction. It is an object of the present invention to provide a shift lever device that is compatible with characteristics.

The present invention is a shift lever device for a vehicle that includes a shift lever that can be operated in a shift direction and a select direction that are orthogonal to each other, and that has a large or small difference in operation range between the shift direction and the select direction. And
It forms the base of the shift lever, and rotates around the first virtual center axis in response to the operation in the shift direction, and rotates around the second virtual center axis in response to the operation in the select direction. Lever block,
When the shift lever is operated in the shift direction, the magnetic pole direction is rotated around the first virtual center axis while maintaining the state toward the first virtual center axis. A magnet held by the lever block so as to rotate around the second virtual central axis while maintaining a state in which the magnetic pole direction is directed to the second virtual central axis when operated in the select direction;
A magnetic sensor for detecting a direction of action of magnetism generated by the magnet;
A base for holding the magnetic sensor;
The lever block is supported by a shift shaft that forms the first virtual center axis, and the rocker is supported by the base in a rotatable state through a select shaft that forms the second virtual center axis. A moving table,
A signal output unit that outputs a signal corresponding to the operation position of the shift lever according to the direction of magnetic action detected by the magnetic sensor;
When the magnetic sensor is arranged closer to the magnet side than the first and second virtual central axes, and the magnetic sensor is positioned in the magnetic pole direction of the magnet, magnetism in the magnetic pole direction acts on the magnetic sensor. On the other hand, magnetism that curves outwardly around the magnetic pole direction acts on the magnetic sensor, so that the sensor detection angle that is the detection angle of the magnetic action direction by the magnetic sensor is the operation angle of the shift lever. It is configured to be amplified for a lever angle that is
The sensor position ratio L1 / L2, which is the ratio of the distance L1 from the virtual center axis to the magnetic sensor with respect to the distance L2 from the virtual center axis to the magnet, is the first virtual center axis and the second virtual center. The sensor position ratio with respect to the virtual center axis corresponding to the operation direction with the large operation range among the shift direction and the selection direction is small, and the virtual center axis with respect to the operation direction with the small operation range In the shift lever device in which the sensor position ratio is set large (Claim 1).

  The magnet included in the shift lever device of the present invention is disposed so as to rotate around the magnetic pole while maintaining the state in which the magnetic pole direction is directed toward the virtual central axis. When the shift lever is operated, the magnet rotates on the outer peripheral side of the magnetic sensor, and the direction of magnetic action on the magnetic sensor changes.

  Here, in the magnetic field around the magnet, a magnetic field line that extends linearly along the magnetic pole direction is the center, and a magnetic field line that deviates from the magnetic field line at the center is curved outward. Such curvature of the magnetic field lines increases as the deviation from the central magnetic field line increases. In the shift lever device of the present invention, the magnetic sensor is disposed closer to the magnet side than the virtual central axis, thereby effectively utilizing the curvature of the magnetic field lines as described above, and having detection characteristics as described below. Realized.

  In the shift lever device of the present invention, when the magnet is positioned on a straight line connecting the virtual central axis and the magnetic sensor (hereinafter referred to as a reference position), the center extends linearly in the magnetic pole direction without being bent. Magnetic field lines act on the magnetic sensor. When the magnet rotates and deviates from the reference position, the magnetic lines of force at the center are directed toward the virtual central axis, while magnetic lines of force that are deviated from the center and act on the magnetic sensor. The inclination of the action direction of the curved lines of magnetic force is amplified to be greater than the inclination of the action direction of the central lines of magnetic force that substantially coincide with the lever angle representing the rotation angle of the magnet.

  In the shift lever device of the present invention, magnetic lines of force that incline the lever angle at an amplified angle act on the magnetic sensor. Then, as the rotational position of the magnet deviates from the reference position, the magnetic force lines that are deviated from the central magnetic force lines and have a large degree of curvature act on the magnetic sensor, and the degree of amplification as described above increases. As described above, in the present invention, since the magnetic sensor is arranged close to the magnet side, the change amount of the sensor detection angle corresponding to the change of the lever angle is enlarged and amplified. The degree of amplification of the change amount of the sensor detection angle becomes more prominent as the magnetic sensor approaches the magnet, that is, as the sensor position ratio increases.

  Therefore, in the shift lever device of the present invention, the magnitude of the sensor position ratio is changed according to the operation range in the shift direction and the select direction. That is, the narrower the operation range, the larger the sensor position ratio is set to increase the amplification degree of the sensor detection angle, so that a small change in the lever angle is detected with high certainty. On the other hand, the larger the operation range, the smaller the sensor position ratio is set to suppress the amplification degree of the sensor detection angle, so that it is possible to cope with a large change in lever angle.

  Thus, the shift lever device of the present invention is a shift lever device that can be operated in the shift direction and the select direction orthogonal to each other, and the shift direction detection characteristic and the select direction detection characteristic according to the setting of the sensor position ratio. It is a device that balances with.

The virtual central axis in the present invention is an axis that forms the center of a rotation operation when the shift lever is operated in the shift direction or the select direction. That the magnetic pole direction of the magnet is directed toward the virtual central axis means that the magnetic pole direction intersects the virtual central axis with no limitation on the axial length.
In the present invention, the operation range in the shift direction and the select direction may be a range related to the length of an operation stroke of the shift lever or a range related to an operation angle of the shift lever.

In the shift lever device according to a preferred aspect of the present invention, based on the correlation between the amplification factor of the sensor detection angle with respect to the lever angle and the sensor position ratio L1 / L2,
The ratio of the value obtained by multiplying the operation range in the shift direction and the gain to the value obtained by multiplying the operation range in the select direction and the gain is within a range of 0.8 to 1.2. A sensor position ratio with respect to the first and second virtual central axes is set (Claim 2).
If the multiplied value is set to be close to 1 in the shift direction and the select direction, the amount of change in the sensor detection angle can be made equal, and similar detection characteristics are realized in the shift direction and the select direction. it can.

In the shift lever device according to a preferred aspect of the present invention, the ratio of the operation range in the shift direction to the operation range in the select direction is 1.5 or more (Claim 3).
When the ratio is 1.5 or more, the difference between the detection characteristic in the shift direction and the detection characteristic in the select direction becomes large, so that the effect of the present invention is particularly effective.

In the shift lever device according to a preferred aspect of the present invention, the magnetic sensor has a magnetic detection unit that detects magnetism, and the magnetic detection unit has a size that can be included inside the magnetic pole surface of the magnet. (Claim 4).
If the magnetic detection unit is larger than the magnetic pole surface of the magnet on the virtual central axis side, the direction of magnetic action may vary greatly due to the difference in position within the magnetic detection unit. In particular, in the present invention, as described above, the magnetic field lines curved from the central magnetic field lines are actively used, and thus the above-described variation in the direction of the magnetic action may become more prominent. Therefore, in the present invention, the size of the magnetic detection unit is set to a size that can be included in the magnetic pole surface of the magnet, that is, a size smaller than the magnetic pole surface. With such a small magnetic detection unit, variations in the direction of magnetic action can be suppressed, and highly accurate detection is possible.

The magnetic sensor in the shift lever device according to a preferred aspect of the present invention can measure magnetic components in three orthogonal directions.
In this case, the direction of the magnetic action on the magnetic detection unit can be detected three-dimensionally. If the direction of magnetic action can be detected three-dimensionally, a two-dimensional operation of the shift lever combining the shift direction and the select direction can be detected with higher accuracy.

The perspective view which shows the shift lever apparatus in an Example. Sectional drawing (cross section along a shift axis) which shows the cross-section of the shift lever apparatus in an Example. Sectional drawing (cross section in alignment with a select axis | shaft) which shows the cross-section of the shift lever apparatus in an Example. Explanatory drawing explaining the detection principle of a magnetic sensor in an Example. Explanatory drawing which shows a mode that the magnetic component of an X-axis (Y-axis) direction acts on a magnetic sensor in an Example. Explanatory drawing explaining sensor detection angle (theta) sh in XZ plane in an Example. Explanatory drawing explaining sensor detection angle (theta) sl in the YZ plane in an Example. Explanatory drawing which shows the magnetic field which acts on a magnetic sensor in an Example. Explanatory drawing (cross-sectional view in alignment with a shift axis | shaft) which shows the rotational position of the magnet when operated in the shift direction in an Example. Explanatory drawing which shows the magnetic field which acts on a magnetic sensor in an Example. Explanatory drawing which shows the magnetic field which acts on a magnetic sensor in an Example. The graph which shows the relationship between the lever angle (rotation angle of a magnet) and a sensor detection angle in an Example. The graph which shows the relationship between a sensor position ratio and an amplification factor in an Example.

The embodiment of the present invention will be specifically described with reference to the following examples.
(Example)
This example is an example related to the shift lever device 1 including the shift lever 21 operated to select the shift range of the vehicle. The contents will be described with reference to FIGS.

As shown in FIGS. 1 to 3, the shift lever device 1 of the present example includes a shift lever 21 that can be operated in a shift direction and a selection direction orthogonal to each other, and includes a shift direction (X-axis direction) and a selection direction (Y-axis). This is a shift lever device for a vehicle in which a large or small difference is provided in the operation stroke (operation range) with respect to (direction).
The shift lever device 1 includes a lever block 2 that forms the base of a shift lever 21, a magnet 230 that is held by the lever block 2, a magnetic sensor 11 that detects an action direction of magnetism generated by the magnet 230, and the magnetic A signal for outputting a signal corresponding to the operation position of the shift lever 21 in accordance with the base 31 that holds the sensor 11, the swinging base 32 that is supported by the base 31, and the direction of magnetic action detected by the magnetic sensor 11. And an output unit.

  The lever block 2 rotates around the first virtual center axis 121 according to the operation in the shift direction, and rotates around the second virtual center axis 122 according to the operation in the select direction. When the shift lever 21 is operated in the shift direction, the magnet 230 held by the lever block 2 rotates around the magnetic pole direction while maintaining the state toward the first virtual central axis 121, and in the select direction. When operated, the magnetic pole direction rotates around the second virtual central axis 122 while maintaining the state. The oscillating base 32 supports the lever block 2 via the shift shaft 20 that forms the first virtual center axis 121 so that the shift direction and the select direction can be operated, and the second virtual center axis 122 It is supported by the base 31 so as to be rotatable via a select shaft 30 formed.

In this shift lever device 1, the magnetic sensor 11 is arranged closer to the magnet 230 side than the virtual central axes 121 and 122. The sensor position ratio L1 / L2, which is the ratio of the distance L1 from the virtual center axis 121 (122) to the magnetic sensor 11 to the distance L2 from the virtual center axis 121 (122) to the magnet 230, is a shift lever in the shift direction and the select direction. The first virtual center axis 121 and the second virtual center axis 122 are different according to the 21 operation strokes.
This will be described in detail below.

  As shown in FIG. 1, the shift lever device 1 is installed on a center console between a driver seat and a passenger seat of a vehicle, a dash panel facing the driver, or the like so that the driver can operate the shift lever 21. It is a device. The shift lever device 1 of this example is a gate type that can operate the shift lever 21 in a shift direction (X-axis direction) and a selection direction (Y-axis direction) that are substantially orthogonal to each other. The shift direction is the operation direction in the front-rear direction as viewed from the driver, and the selection direction is the operation direction in the left-right direction. In the shift lever device 1 of this example, the operation stroke in the shift direction is longer than the operation stroke in the select direction, and is set to about twice.

  As shown in FIGS. 1 to 3, the shift lever device 1 includes a lever block 2 to which the shift lever 21 is fixed, a swing base 32 that pivotally supports the lever block 2 while being rotatable in the shift direction, and the like. 15 is housed inside. The oscillating base 32 is pivotally supported by a base 31 that forms the bottom surface of the apparatus so as to be rotatable in the select direction. On the upper surface of the protective cover 15, a gate 150 that forms a movement path of the shift lever 21 is provided. Symbols representing shift ranges such as D and R are displayed at each shift position.

  In the shift lever device 1, three operation rows in the shift direction are set, and the operation row in the shift direction can be switched by operating the shift lever 21 in the select direction. In the shift lever device 1 of this example, the center position where the gate 150 intersects the cross is the home position 151 (H position). The shift lever 21 is always biased toward the H position 151.

  For example, if the shift lever 21 (see FIGS. 2 and 3) located at the H position 151 is operated to the right (select direction) in FIG. 1 and then pulled forward (shift direction), the D lever is operated. And D range can be selected. Thereafter, when the driver releases his hand from the shift lever 21, the shift lever 21 returns to the H position 151 while the state where the D range is selected is maintained. Further, for example, when the D range is selected, if the shift lever 21 at the H position 151 is pulled forward, it can be operated to the-position and the gear can be lowered by one step. Further, for example, when the D range is selected, the N range can be selected by operating the shift lever 21 at the H position 151 to the left and operating the shift lever 21 to the N position. On the other hand, the R range can be selected by pushing further from the N position to the far side and operating to the R position without returning to the H position. The shift pattern of the shift lever 21 is not limited to this example. If the operation position detection method in the shift lever device 1 of this example is employed, it is possible to handle operations in all directions.

  Next, each part which comprises the shift lever apparatus 1 is demonstrated. The base 31 forms the bottom of the apparatus as shown in FIGS. A pedestal 312 protruding in the height direction is provided at the center of the bottom surface having a rectangular shape. The sensor substrate 10 on which the magnetic sensor 11 is mounted is fixed on the upper surface of the pedestal portion 312. On the bottom surface of the base 31, a pair of support pieces 311 that face each other via a pedestal portion 312 are erected. Each of the pair of support pieces 311 is formed with a shaft hole through which the select shaft 30 is disposed. Screw holes 318 for attaching the protective cover 15 are drilled at the four corners.

  As shown in FIGS. 1 to 3, the oscillating table 32 is a member having a cylindrical shape with a substantially rectangular annular section. Of the two sets of side surfaces facing each other, one set of side surfaces facing the support piece 311 of the base 31 is provided with a seat portion 321 protruding outward. The end surface of the seat portion 321 is a surface on which the select shaft 30 penetratingly disposed in the shaft hole of the support piece 311 is erected and fixed. A shift shaft 20 is erected on the other set of side surfaces. The shift shaft 20 and the select shaft 30 are erected or fixed at different positions in the cylindrical direction of the oscillating table 32. The shift shaft 20 is disposed on the upper side in the height direction when the vehicle is mounted, and the select shaft 30 is disposed on the lower side.

  Of the four side wall portions surrounding the sensor space 100 corresponding to the inner space of the oscillating base 32, the side wall portion on which one of the shift shafts 20 is erected is formed thicker than the other three side wall portions. Yes. On the upper surface of the thick side wall portion, a cylindrical pin holding portion 323 is erected to hold the plunger 322 in a state in which the plunger 322 can be advanced and retracted. The plunger 322 is urged in the protruding direction by the urging force of the spring 324 accommodated in the pin holding portion 323. The position of the plunger 322 in the protruding direction is regulated by contact with the moderation member 325 (FIG. 1) held by the lever block 2. A concave surface corresponding to each shift position arranged in the shift direction is provided on the contact surface on the moderation member 325 side against which the plunger 322 is pressed. By the combination of the moderation member 325 and the plunger 322, a moderation feeling (click feeling) is given to the operation in the shift direction.

  As shown in FIGS. 1 to 3, the lever block 2 is a member that forms a base portion on the base side of the shift lever 21 having a shift knob 212 attached to the tip. The lever block 2 includes a magnet holder 23 that extends along the axial direction of the shift lever 21 and a pair of arm portions 22 that face each other with the magnet holder 23 interposed therebetween. A shaft hole for penetrating the shift shaft 20 is bored at each end of the arm portion 22. The lever block 2 is connected to the swing base 32 via a shift shaft 20 penetratingly disposed in the shaft hole of the arm portion 22. A cylindrical magnet 230 having a diameter of 10 mm is disposed at the tip of the magnet holder 23. The magnetic pole direction of the magnet 230 coincides with the axial direction of the shift lever 21 and is always directed toward the virtual central axes 121 and 122 regardless of the rotation position of the magnet 230.

  In this example, a magnet made of a ferrite magnet is used as the magnet 230. Instead of this, a magnet made of an alnico magnet, a neodymium magnet, or the like may be employed. Furthermore, it is also possible to employ a plastic magnet in which magnetic powder is bound to resin. Moreover, it can replace with the magnet which consists of permanent magnets, and can also employ | adopt an electromagnetic magnet. Further, in this example, the N pole faces the magnetic sensor 11, but the S pole may face each other.

  As shown in FIGS. 1 to 4, the sensor substrate 10 is a substrate on which a one-chip magnetic sensor 11 is mounted in addition to a CPU, a ROM, a RAM, and the like (not shown). The CPU has a function as a data processing unit that executes data processing based on the detection result of the magnetic sensor 11 and a signal output unit that outputs an electrical signal reflecting the operation of the shift lever 21. The ROM stores software programs executed by the CPU.

  As shown in FIGS. 4 and 5, the magnetic sensor 11 is an IC chip including magnetic detection elements 111 to 114 that detect magnetic components acting in the vertical direction. In the magnetic sensor 11, magnetic detection elements 111 to 114 having the same specifications are arranged at four locations on the outer periphery of a disk-shaped magnetic plate 115 made of a ferromagnetic material. A substantially circular area where the magnetic plate 115 and the magnetic detection elements 111 to 114 are arranged is the magnetic detection unit 110. The magnetic detection elements 111 and 112 are opposed to each other along the X-axis direction corresponding to the shift direction, and the magnetic detection elements 113 and 114 are opposed to each other along the Y-axis direction corresponding to the selection direction. In this example, the size of the magnetic detection unit 110 is set to about 0.5 mm to 2.0 mm in diameter with respect to the magnetic pole surface 231 having a diameter of about 10 mm of the magnet 230.

  Here, the detection principle by the magnetic sensor 11 will be described with reference to FIGS. When a magnetic vector B composed of magnetic components Bx, By, and Bz along the X axis, Y axis, and Z axis acts on the magnetic sensor, Bz acting in the vertical direction among the magnetic components is all the magnetic detection elements 111 to 114. Works almost equally. On the other hand, when the magnetic component Bx along the X-axis acts on the magnetic sensor 11, as shown in FIG. Then, a magnetic force αBx (α is a constant) in the reverse direction in the vertical direction acts on the magnetic detection elements 111 and 112 arranged in the X-axis direction. Similarly, the magnetic force αBy in the reverse direction in the vertical direction acts on the magnetic detection elements 113 and 114 arranged in the Y-axis direction with the same specifications as the X-axis direction due to the magnetic component By along the Y-axis. Become.

At this time, magnetic forces B1 to B4 acting on the magnetic detection elements 111 to 114 are expressed by the following equations.
B1 = αBx + Bz
B2 = −αBx + Bz
B3 = αBy + Bz
B4 = −αBy + Bz

Bx, By, and Bz are calculated as follows based on the above simultaneous equations.
Bx = (B1-B2) / 2α
By = (B3-B4) / 2α
Bz = (B1 + B2 + B3 + B4) / 4
Thus, according to the magnetic sensor 11 of this example, it is possible to detect a three-dimensional arbitrary action direction for the magnetism acting on the magnetism detection unit 110.

  In the shift lever device 1 of the present example configured as described above, as shown in FIGS. 1 to 3, a pedestal portion 312 (base 31) that holds the sensor substrate 10 in the sensor space 100 inside the swing base 32. ) Protrudes, and the magnetic sensor 11 is disposed beyond the virtual central axes 121 and 122. In this example, the distance L1 between the magnetic detection unit 110 of the magnetic sensor 11 and the first virtual central axis 121 is set to 2 mm, and the distance L1 between the magnetic detection unit 110 and the second virtual central axis 122 is set to 20 mm. .

  When the shift lever 21 is positioned at the H position 151, the magnet 230 and the magnetic sensor 11 serve as a reference position aligned in a straight line along the axial direction of the shift lever 21. At this reference position, the gap between the magnetic detection unit 110 and the magnetic pole surface 231 of the magnet 230 is 3 mm. Further, the distance L2 between the magnetic pole surface 231 of the magnet 230 and the first virtual central axis 121 is 23 mm, and the distance L2 between the magnetic pole surface 231 and the second virtual central axis 122 is 5 mm. Furthermore, at this reference position, the projected shape when the magnetic detection unit 110 (diameter of about 0.5 to 2.0 mm) is projected onto the magnetic pole surface 231 (diameter of 10 mm) of the magnet 230 along the axial direction of the shift lever 21. It is located at the inner center of the magnetic pole surface 231.

  In the shift lever device 1, the magnet 230 rotates on the outer peripheral side of the magnetic sensor 11 in accordance with the operation of the shift lever 21. At this time, the direction of magnetic action on the magnetic detection unit 110 changes. According to the magnetic component Bx along the X axis and the magnetic component Bz along the Z axis detected by the magnetic sensor 11, the inclination of the magnetic vector (magnetism acting direction) in the plane orthogonal to the Y axis as shown in FIG. θsh can be calculated as the sensor detection angle.

  Based on the inclination θsh of the magnetic vector, the rotation angle of the magnet 230 around the shift shaft 20 when operated in the shift direction, that is, the lever angle (operation angle) in the shift direction can be known. Direction) of the shift lever 21 can be detected. As for the operation in the selection direction (Y-axis direction), the direction of the magnetic action acting on the magnetic detection unit 110 changes according to the operation, as described above. According to the magnetic component By along the Y-axis and the magnetic component Bz along the Z-axis, as shown in FIG. 7, the inclination θsl of the magnetic vector in the plane perpendicular to the X-axis can be calculated as the sensor detection angle. The operation position of the direction shift lever 21 can be detected.

In the shift lever device 1 of this example, the magnetic sensor 11 is arranged closer to the magnet 230 side than the virtual central axes 121 and 122. Such an arrangement of the magnetic sensor 11 produces a magnetic effect as described below.
When the shift lever 21 is located at the H position 151 (see FIG. 1), as shown in FIG. 8, magnetic lines extending linearly in the magnetic pole direction from the magnetic pole surface 231 of the magnet 230 act on the magnetic detection unit 110. On the other hand, when the shift lever 21 is operated in the shift direction as shown in FIG. 9, as shown in FIGS. 10 and 11, the central magnetic line extending linearly in the magnetic pole direction is directed to the virtual central axis 121, while Also, magnetic field lines that are curved from the center act on the magnetic detection unit 110 that is offset to the magnet 230 side.

  The lines of magnetic force extending radially from the magnetic pole surface 231 of the magnet 230 have a straight line of magnetic force at the center that hits the direction of the magnetic pole, while a line of magnetic force that deviates from the center is curved outward. As the deviation from the center increases, the degree of curvature increases. Therefore, as can be seen from the comparison between FIG. 10 and FIG. 11, as the rotation angle (lever angle) of the magnet 230 increases, the magnetic field lines that are further deviated from the center act on the magnetic detection unit 110. Such a tendency is completely the same for the operation in the select direction accompanied by the rotation operation around the second virtual center axis 122.

  Furthermore, the degree of such a tendency differs depending on the position of the magnetic sensor 11 in the gap between the virtual central axes 121 and 122 and the magnet 230, that is, the sensor position ratio (L1 / L2). FIG. 12 shows how the relationship between the lever angle that is the operation angle of the shift lever 21 and the sensor detection angle that is the detection angle by the magnetic sensor 11 changes according to the sensor position ratio (L1 / L2). It is a graph which shows the result of simulation. In this simulation, the sensor position ratio (L1 / L2) is changed from 0 to 0.87. In the drawing, the horizontal axis indicates the lever angle corresponding to the rotation angle of the magnet 230, and the vertical axis indicates the sensor detection angle.

  As known from the simulation result of FIG. 12, the sensor detection angle by the magnetic sensor 11 increases as the sensor position ratio (L1 / L2) increases. For example, in the case of a lever angle of 5 degrees, when the sensor position ratio (L1 / L2) is 0, it is 5 degrees, when it is 0.40, it is 5.68 degrees, and when it is 0.87, it is 11.55 degrees. Yes. That is, as the sensor position ratio increases, the amplification factor, which is the ratio of the sensor detection angle to the lever angle, gradually increases. As is known from FIG. 13 showing the correlation between the sensor position ratio and the amplification ratio, this amplification factor increases in a quadratic curve as the sensor position ratio increases.

  In the shift lever device 1 of this example, as described above, the distance L1 between the first virtual central axis 121 and the magnetic sensor 110 of the magnetic sensor 11 is 2 mm, and the distance L2 with respect to the magnetic pole surface 231 of the magnet 230 is 5 mm. (FIG. 2). For the second virtual central axis 122, the distance L1 to the magnetic detection unit 110 is set to 20 mm, and the distance L2 to the magnetic pole surface 231 is set to 23 mm (FIG. 3). Thus, the sensor position ratio (L1 / L2) in the shift direction with respect to the first virtual center axis 121 is 0.4, and the sensor position ratio (L1 / L2) in the select direction with respect to the second virtual center axis 122 is about 0. 87. According to the graph showing the correlation between the lever angle and the amplification factor in FIG. 13, an amplification factor of about 1.1 times in the shift direction and about 2.3 times in the select direction can be obtained.

  On the other hand, in the shift lever device 1 of this example, the ratio of the operation stroke in the shift direction to the operation stroke in the select direction is about 2 as described above. If the amplification factor is exactly the same in the shift direction and the select direction, the ratio between the change amount of the sensor detection angle in the shift direction and the change amount of the sensor detection angle in the select direction becomes 2 as it is, depending on the operation direction. The detection characteristics are greatly different.

  In such a case, the setting of the amplification factor of the sensor detection angle that varies depending on the operation direction as described above works very effectively. If the amplification factor in the select direction is set to be larger than that in the shift direction, a value obtained by multiplying the operation stroke in the shift direction (2 in this example) by the amplification factor (1.1 in the example) and the operation stroke in the select direction (same as 1 in the example). ) Multiplied by the amplification factor (2.3) can be made close to 1. Thereby, the ratio of the change amount of the sensor detection angle between the shift direction and the select direction can be made substantially 1, and the difference in detection characteristics between the shift direction and the select direction can be suppressed.

  As described above, the shift lever device 1 of the present example suppresses the difference between the detection characteristic in the shift direction and the detection characteristic in the select direction despite the large difference in the operation stroke in the shift direction and the select direction. It is a shift lever device with excellent characteristics in which the detection characteristics of the operation direction are compatible.

As the magnetic sensor 11, instead of this example, a one-chip IC in which three magnetic detection elements arranged along the X axis, the Y axis, and the Z axis orthogonal to each other can be adopted. .
The sensor gap (interval between the magnet 230 and the magnetic sensor 11) is preferably set to about 1.5 to 3.0 mm for a ferrite magnet, for example.
In this example, the magnet 230 is arranged on the axis so that the magnetic pole direction coincides with the axial direction of the shift lever 21, but the magnet 230 may be arranged offset from the axial direction of the shift lever 21.

  As described above, specific examples of the present invention have been described in detail as in the embodiments. However, these specific examples merely disclose an example of the technology included in the scope of claims. Needless to say, the scope of the claims should not be construed as limited by the configuration, numerical values, or the like of the specific examples. The scope of the claims includes techniques obtained by variously modifying or changing the specific examples using known techniques, knowledge of those skilled in the art, and the like.

DESCRIPTION OF SYMBOLS 1 Shift lever apparatus 10 Sensor board 100 Sensor space 11 Magnetic sensor 110 Magnetic detection part 111-114 Magnetic detection element 115 Magnetic plate 121,122 Virtual central axis 15 Protection cover 150 Gate 151 H position 2 Lever block 20 Shift shaft 21 Shift lever 230 Magnet 231 Magnetic pole surface 30 Select shaft 31 Base 312 Base part 32 Swing base

Claims (4)

A shift lever device for a vehicle, comprising a shift lever operable in a shift direction and a select direction orthogonal to each other, wherein a large or small difference is provided in an operation range between the shift direction and the select direction,
It forms the base of the shift lever, and rotates around the first virtual center axis in response to the operation in the shift direction, and rotates around the second virtual center axis in response to the operation in the select direction. Lever block,
When the shift lever is operated in the shift direction, the magnetic pole direction is rotated around the first virtual center axis while maintaining the state toward the first virtual center axis. A magnet held by the lever block so as to rotate around the second virtual central axis while maintaining a state in which the magnetic pole direction is directed to the second virtual central axis when operated in the select direction;
A magnetic sensor for detecting a direction of action of magnetism generated by the magnet;
A base for holding the magnetic sensor;
The lever block is supported by a shift shaft that forms the first virtual center axis, and the rocker is supported by the base in a rotatable state through a select shaft that forms the second virtual center axis. A moving table,
A signal output unit that outputs a signal corresponding to the operation position of the shift lever according to the direction of magnetic action detected by the magnetic sensor;
When the magnetic sensor is arranged closer to the magnet side than the first and second virtual central axes, and the magnetic sensor is positioned in the magnetic pole direction of the magnet, magnetism in the magnetic pole direction acts on the magnetic sensor. On the other hand, magnetism that curves outwardly around the magnetic pole direction acts on the magnetic sensor, so that the sensor detection angle that is the detection angle of the magnetic action direction by the magnetic sensor is the operation angle of the shift lever. It is configured to be amplified for a lever angle that is
The sensor position ratio L1 / L2, which is the ratio of the distance L1 from the virtual center axis to the magnetic sensor with respect to the distance L2 from the virtual center axis to the magnet, is the first virtual center axis and the second virtual center. The sensor position ratio with respect to the virtual center axis corresponding to the operation direction with the large operation range among the shift direction and the selection direction is small, and the virtual center axis with respect to the operation direction with the small operation range A shift lever device in which the sensor position ratio is set large. In claim 1, based on the correlation between the amplification factor of the sensor detection angle with respect to the lever angle and the sensor position ratio L1 / L2,
The ratio of the value obtained by multiplying the operation range in the shift direction and the gain to the value obtained by multiplying the operation range in the select direction and the gain is within a range of 0.8 to 1.2. A shift lever device in which a sensor position ratio with respect to the first and second virtual central axes is set.   The shift lever device according to claim 1 or 2, wherein a ratio between the operation range in the shift direction and the operation range in the select direction is 1.5 or more.   The shift according to any one of claims 1 to 3, wherein the magnetic sensor has a magnetic detection unit that detects magnetism, and the magnetic detection unit has a size that can be included inside a magnetic pole surface of the magnet. Lever device.

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