JP6282945B2 - Rotational movement detector - Google Patents

Description

  The present invention relates to a rotational movement detection device.

  As a conventional technique, a lever switch device that is mounted mainly in the vicinity of a steering wheel of an automobile and used for operation of a headlamp, a turn signal lamp, or the like is known. For example, in a lever switch device, an insertion hole is formed in a front end portion of a holder attached to an operation lever, and a driving body is slidably held in the insertion hole, and the driving body is attached to a cam surface of a case by a spring force. Press contact. A pair of guide grooves extending in the axial direction is formed at both upper and lower ends of the inner peripheral surface of the insertion hole, and the guide grooves are positioned in a plane orthogonal to the sliding direction with respect to the cam surface of the driving body. On the other hand, a pair of guide protrusions extending in the axial direction are formed on the outer peripheral surface of the first driving body, and the guide protrusions are inserted into the guide grooves of the insertion holes while maintaining a slight clearance. Thus, the lever can be tilted in two directions (see Patent Document 1).

  In addition, a first rotating body and a second rotating body that rotate in response to the swinging operation of the outer lever are provided as non-contact detection of the two crossing movements caused by the tilting operation of the lever. The magnetism of the two mounted magnets is detected by two magnetic detection elements provided corresponding to the respective magnets, and the control means detects the rotation angle of each rotating body from this detection signal, and according to this There is a lever switch device configured to output an operation signal (see Patent Document 2).

JP 2001-6494 A JP 2008-218067 A

  However, the lever switch device of Patent Document 1 detects the movement of the sliding contact due to the tilting operation of the lever, and has problems in reliability, durability, and the like. In addition, the lever switch device of Patent Document 2 has a problem in that two magnets are required for each movement in order to detect movements in two intersecting directions caused by a tilting operation of the lever using a magnetic detection element.

  Accordingly, an object of the present invention is to provide a rotational movement detection device capable of detecting movement in two directions with a single magnet in a non-contact manner.

  In one embodiment of the present invention, a rotation member that rotates around a rotation axis and generates a magnetic field that is plane-symmetric with respect to a plane that includes the rotation axis, and a rotation surface of the rotation member that is disposed on a substrate arrangement surface are detected. Rotation angle detector that detects the approach and separation between the rotating member and the arrangement surface, and the intersection of the straight line passing through the intersection of the rotation axis and the arrangement surface and the outer periphery of the map obtained by projecting the rotation member onto the arrangement surface A first detection unit disposed on the second detection unit, and a second detection unit disposed on a plane symmetrical with the first detection unit with respect to the plane, A rotational movement detecting device is provided.

  According to the present invention, movement in two directions can be detected by a single magnet without contact.

FIG. 1 is a schematic diagram of the interior of a vehicle on which a lever switch device according to an embodiment is mounted. FIG. 2 is a perspective view showing an appearance of the lever switch device according to the embodiment. FIG. 3 is an exploded perspective view of the lever switch device according to the embodiment. 4 is a cross-sectional view of the lever switch device according to the embodiment, taken along line AA of FIG. Fig.5 (a) is a perspective view of the magnet which concerns on embodiment, FIG.5 (b) is DD sectional drawing of Fig.5 (a), FIG.5 (c) is an upper surface of a magnet. FIG. FIG. 6A is a top view for explaining the positional relationship between a mapping obtained by projecting the magnet according to the embodiment onto the arrangement surface and the first and second dimmer detection sensors. FIG. 6B is a side view of the magnet, and FIG. 6C is a block diagram of the lever switch device. Fig.7 (a) is a top view which shows rotation of the magnet by the turn operation of the right direction of the lever switch apparatus based on Embodiment, FIG.7 (b) shows a magnet when a lever exists in a neutral position. FIG. 7C is a top view showing the rotation of the magnet by the left turn operation. FIG. 8A shows the detection value S ₂ of the first dimmer detection sensor, the detection value S _{3 of} the second dimmer detection sensor, and the addition obtained by adding the detection value S ₂ and the detection value S _{3 according} to the embodiment. 8 is a graph of the value (S ₂ + S ₃ ), and FIG. 8B is a graph for explaining detection of the dimmer operation by the first dimmer detection sensor and the second dimmer detection sensor, and FIG. ) Is a graph with respect to the arrangement angle θ ₁ of the first dimmer detection sensor and the second dimmer detection sensor. FIG. 8D shows the detection value S ₂ , the detection value S _3, and the addition value ( it is a graph of _{S 2} + S _3). FIG. 9A is a plan view showing the moving state of the operation lever and the magnet in the right turn operation (operation in the direction of arrow TR) seen from the direction B in FIG. 2, and FIG. 9B is a view in FIG. FIG. 9C is a plan view showing a moving state of the operation lever and the magnet at the neutral position viewed from the B direction, and FIG. 9C is an operation lever at the time of the left turn operation (operation in the arrow TL direction) viewed from the B direction in FIG. It is a top view which shows the movement state of a magnet. 10A is a cross-sectional view taken along the line AA in FIG. 2, and is a partial cross-sectional view illustrating a moving state of the operation lever and the magnet during the dimmer operation in the direction of arrow D. FIG. FIG. 10A is a partial cross-sectional view showing a moving state of the operation lever and the magnet at the neutral position in the section A, and FIG. 10C is a sectional view taken along the line AA in FIG. It is a fragmentary sectional view which shows the movement state of a magnet.

(Summary of embodiment)
The rotational movement detection device according to the embodiment is disposed on a rotation member that rotates around a rotation axis and generates a magnetic field that is plane-symmetric with respect to a plane including the rotation axis, Rotation angle detection unit that detects the rotation angle, approach and separation due to relative movement between the rotating member and the placement surface are detected, and the rotation member is projected onto the straight line passing through the intersection of the rotation axis and the placement surface and the placement surface. The first detection unit arranged at the intersection with the outer periphery of the mapping to be detected, and the approach and separation between the rotating member and the arrangement surface are detected, and the first detection unit is arranged in a plane-symmetrical position with respect to the plane. And a second detector.

[Embodiment]
(Overall configuration of lever switch device 1)
FIG. 1 is a schematic diagram of the interior of a vehicle on which a lever switch device according to an embodiment is mounted. FIG. 2 is a perspective view showing an appearance of the lever switch device according to the embodiment. FIG. 3 is an exploded perspective view of the lever switch device according to the embodiment. 4 is a cross-sectional view of the lever switch device according to the embodiment, taken along line AA of FIG. Fig.5 (a) is a perspective view of the magnet which concerns on embodiment, FIG.5 (b) is DD sectional drawing of Fig.5 (a), FIG.5 (c) is an upper surface of a magnet. FIG. FIG. 6A is a top view for explaining the positional relationship between a mapping obtained by projecting the magnet according to the embodiment onto the arrangement surface and the first and second dimmer detection sensors. FIG. 6B is a side view of the magnet, and FIG. 6C is a block diagram of the lever switch device. Note that, in each drawing according to the embodiment described below, the ratio between figures may be different from the actual ratio. In FIG. 6C, the flow of main signals and information is indicated by arrows.

  A lever switch device 1 as a rotational movement detection device is an operation device capable of operating a winker (direction indicator) and a headlamp of a vehicle 5, for example, as shown in FIG. As shown in FIG. 1, the lever switch device 1 is mounted in the vicinity of the steering 6 of the vehicle and is disposed so as to protrude from a steering column cover 7 that covers the steering column.

  The lever switch device 1 disposed so as to protrude rightward on the paper surface of FIG. 1 operates, for example, a direction indicator and a headlamp. In the present embodiment, a lever switch device 1 capable of operating a direction indicator and the like protruding to the right side on the premise of a right-hand drive vehicle will be described.

  As shown in FIGS. 2 and 3, the lever switch device 1 rotates around the third rotation axis L3 and has a magnetic field (magnetic field) that is plane-symmetric with respect to a plane (plane 503) including the third rotation axis L3. 500) generating a rotation member, a rotation angle detection unit which is arranged on the arrangement surface of the base material and detects the rotation angle θ of the rotation member, and detects approach and separation due to relative movement between the rotation member and the arrangement surface, At the intersection (intersection 911) between the straight line (straight line 506) passing through the intersection (intersection 801) of the third rotation axis L3 and the arrangement plane and the outer periphery of the map (mapping 505) obtained by projecting the rotation member onto the arrangement plane. The approach and separation between the first detection unit arranged, the rotating member, and the arrangement surface 101 are detected, and the second detection unit is arranged in a plane symmetrical with the first detection unit with respect to the plane (plane 503). And a detection unit.

  The rotating member is, for example, a magnet 50. For example, the arrangement surface of the base material is an arrangement surface 101 of the substrate 100 which is a printed wiring board. The rotation angle detection unit is a turn detection sensor 80 as an example. As an example, the first detection unit and the second detection unit are a first dimmer detection sensor 91 and a second dimmer detection sensor 92 (see FIG. 6A).

  Further, the lever switch device 1 is configured to perform a first rotation operation about the first rotation axis L1 and a second rotation operation about the second rotation axis L2 intersecting the first rotation axis L1. A possible operation unit, a first conversion unit that converts the first rotation operation performed on the operation unit into a rotation around the third rotation axis L3 of the magnet 50, and a second rotation operation performed on the operation unit And a second conversion unit that converts relative movement between the magnet 50 and the arrangement surface 101.

  The operation unit is an operation lever 10 as an example. The 1st conversion part is bracket 30 as an example. The 2nd conversion part is holder 40 as an example.

  Moreover, the lever switch apparatus 1 is provided with the housing | casing 20, the bracket 30, and the magnet holder 70, as shown in FIG.

  Here, the direction of the first rotation operation around the first rotation axis L1 shown in FIG. 3 indicates the operation in the arrow TL direction shown in FIG. 2 and the operation in the arrow TR direction which is opposite to the arrow TL direction. ing. The operation in the direction of the arrow TL is, for example, a left turn operation for blinking the left turn signal (direction indicator) of the vehicle 5. The operation in the direction of the arrow TR is, for example, a right turn operation for blinking the right turn signal (direction indicator). That is, the first rotation operation is a winker (direction indicator) operation for left or right turn, and is a turn operation of the operation lever 10.

  On the other hand, the direction of the second rotation operation around the second rotation axis L2 shown in FIG. 3 indicates the operation in the arrow D direction shown in FIG. 2 and the operation in the arrow P direction opposite to the arrow D direction. Yes. The operation in the direction of arrow D is, for example, an operation (dimmer HU operation) for switching the optical axis of the headlamp of the vehicle 5 upward. The operation in the arrow P direction is, for example, an operation (passing operation) for switching the optical axis of the headlight upward while maintaining the operation. For example, the lever switch device 1 is configured as a momentary switch that returns to the neutral position after the operation is completed for the operation in the direction of the arrow P. In addition, for example, for the operation in the direction of the arrow D, the lever switch device 1 does not return to the neutral position after the operation is completed, but maintains the state in which the operation lever 10 is operated in the direction of the arrow D. It is configured. That is, the second rotation operation is an operation of switching the optical axis of the headlamp, and is a dimmer operation of the operation lever 10.

  Since the upper casing 21 of the lever switch device 1 shown in FIG. 2 is arranged in the vehicle 5 so as to face the operator, the first operation direction described above is operated in the vertical direction of FIG. 2 as viewed from the operator. It becomes the direction to do. The upward operation is an operation in the arrow TL direction, and the downward operation is an operation in the arrow TR direction. In addition, the second operation direction is a direction to operate in the front-rear direction as viewed from the operator. This forward operation is an operation in the direction of arrow P, and is an operation that pulls the operation lever 10 toward the operator. The backward operation is an operation in the direction of arrow D, and is an operation that moves the operation lever 10 away from the operator.

  The operation surface formed by the operation lever 10 by the operation in the arrow TL direction and the arrow TR direction intersects with the operation surface formed by the operation lever 10 by the operation in the arrow D direction and the arrow P direction. Orthogonal.

(Configuration of operation lever 10)
The operation lever 10 is accommodated in the bracket 30 and can be rotated and moved around the first rotation axis L1 integrally with the bracket 30 by a turn operation, and the second rotation axis L2 intersecting the first rotation axis L1. It is constructed and arranged so as to be able to rotate and move independently of the bracket 30 in the direction of the dimmer operation around.

  The operation lever 10 includes an insertion portion 11 that is inserted and accommodated in the bracket 30, a lever main body 12 that is held by an operator for turn operation and dimmer operation, and between the insertion portion 11 and the lever main body 12. The rotary shaft portion 13 is roughly configured to be positioned and serve as a rotation center for the dimmer operation of the operation lever 10.

  As shown in FIG. 3, the rotation shaft portion 13 is formed so as to protrude in both directions of the second rotation shaft L <b> 2, and when the insertion portion 11 is inserted into the bracket 30, the rotation shaft portion 13 is formed in the support hole portion 33 of the bracket 30. It is rotatably supported.

  On the distal end side of the insertion portion 11, a driving projection 14 is formed to protrude so as to engage with a holder 40 described later and slide the holder 40 during a dimmer operation.

  An insertion hole 15 into which the moderation piece 16 is inserted via a spring 17 is formed at the distal end of the insertion portion 11. The moderation piece 16 is urged toward the moderation block 25 by the spring 17 in a state where the operation lever 10 is assembled to the bracket 30 and the housing 20. Thereby, the moderation feeling required at the time of turn operation and dimmer operation can be provided.

(Configuration of the housing 20)
As shown in FIGS. 2 and 3, the housing 20 includes an upper housing 21 and a lower housing 22. A moderation block 25 is attached to the upper housing 21 corresponding to the moderation piece 16. In addition, the magnet holder 70 and the substrate 100 are fixed to the lower housing 22 from below. The upper housing 21 and the lower housing 22 are locked and fixed to each other by the engagement of the locking portion 21a and the locking projection 22a.

  The upper housing 21 has a box shape that can accommodate the bracket 30 and the like therein. As shown in FIG. 4, a support hole 21 b that rotatably supports the rotary shaft portion 31 of the bracket 30 is formed on the inner upper surface. The upper housing 21 rotatably supports the upper portion of the bracket 30, and the lower housing 22 rotatably supports the lower portion of the bracket 30 so that the bracket 30 is sandwiched between the upper housing 21 and the lower housing 22. Accommodate. Inside the upper housing 21, an internal space is formed so that the bracket 30 can be rotated and moved around the support hole portion 21b by a predetermined angle (an angle necessary for the turn operation).

  A moderation block 25 is mounted inside the upper housing 21 as shown in FIG. The moderation block 25 gives a feeling of moderation required at the time of turn operation and dimmer operation by the urged moderation piece 16 and the moderation groove 25a.

  The lower housing 22 has a box shape that can accommodate the bracket 30 and the like therein. As shown in FIG. 4, an annular groove portion 22b that rotatably supports the annular wall portion 32 of the bracket 30 is formed on the inner lower surface. Similar to the upper casing 21, an inner space is formed in the lower casing 22 so that the bracket 30 can rotate and move around the annular groove 22b by a predetermined angle (an angle necessary for the turn operation).

  As shown in FIG. 3, the lower housing 22 has a magnet holder 70 and a substrate 100 fixed from below.

(Configuration of bracket 30)
The bracket 30 is formed with a rotating shaft portion 31 protruding from the first rotating shaft L1, and an annular wall portion 32 is formed as shown in FIG. Thereby, the bracket 30 is accommodated in the housing 20 in a state in which the bracket 30 can be rotated about the first rotation axis L1 by a predetermined angle (an angle necessary for the turn operation).

  The bracket 30 is formed with a support hole portion 33 that is rotatably fitted to and supported by the rotation shaft portion 13 of the operation lever 10 on the second rotation shaft L2. Thereby, the bracket 30 accommodates the operation lever 10 in a state in which the bracket 30 can rotate and move independently of the bracket 30 in the direction of the dimmer operation around the second rotation axis L2.

  The bracket 30 has a drive projection 34 for rotationally driving the magnet 50 described above at a position spaced from the first rotation axis L1. The drive protrusion 34 rotates by a predetermined angle together with the bracket 30 around the first rotation axis L <b> 1 when the operation lever 10 is turned.

(Configuration of holder 40)
The holder 40 can be rotated and moved around the first rotation axis L1 integrally with the bracket 30 by the turning operation of the operating lever 10, and can be slidably moved with respect to the bracket 30 by the dimmer operation of the operating lever 10. The bracket 30 is housed.

  As shown in FIG. 3, the holder 40 is formed with a fitting groove 41 in the upper portion of the holder 40 in which the driving protrusion 14 of the operation lever 10 is fitted. The fitting groove 41 is configured so that the holder 40 follows only the vertical movement of the drive protrusion 14 when the operation lever 10 is operated around the second rotation axis L2, and the second rotation axis L2. It is formed as a groove not to follow the movement in the intersecting direction.

  Further, as shown in FIG. 3, the holder 40 is provided at the lower part of the holder 40 for holding the magnet 50 and moving it up and down when the operation lever 10 is dimmed around the second rotation axis L2. A holding groove 42 is formed. The holding groove 42 is formed as a groove that does not follow the movement around the first rotation axis L1 when the operation lever 10 is turned around the first rotation axis L1.

(Configuration of magnet 50)
The magnet 50 includes, for example, a ferrite-based material, a neodymium-based material, a samaritan-based material, a samarium-iron-nitrogen-based magnetic material material, a polystyrene-based material, a polyethylene-based material, a polyamide-based material, a synthetic resin material such as acrylonitrile / butadiene / styrene (ABS), It is a plastic magnet formed by mixing and molding into a desired shape. As a modification, the rotating member may be, for example, an electromagnet that forms a magnetic field similar to the magnet 50.

  As shown in FIGS. 5A to 5C, the magnet 50 is schematically configured to include a disk portion 51, a protruding portion 54, and a cylindrical portion 56. As shown in FIG. 5A, the magnet 50 is magnetized in a direction intersecting with the third rotation axis L3 of the magnet 50, one of which is provided with a protruding portion 54 is an S pole, and the other is N It is the pole. Due to this magnetization, as shown in FIGS. 5B and 5C, the magnetic flux is radiated from the N pole of the magnet 50 toward the S pole, and the magnetic flux radiated from the N pole in the radial direction is changed. A magnetic field 500 converged on the south pole is formed. Note that the magnetization direction may be reversed.

  A cylindrical portion 56 is provided on the upper surface 52 of the disc portion 51, and an inclination 530 is provided on the lower surface 53. The disk portion 51 is provided with a protruding portion 54 so as to protrude from the side surface in the radial direction of the magnet 50.

  The cylindrical portion 56 is provided with a circumferential groove portion 560 in the circumferential direction. As described above, the circumferential groove portion 560 is slidably fitted in the holding groove 42 of the holder 40. When the dimmer operation is performed on the operation lever 10, the holder 40 moves up and down according to the direction of the dimmer operation via the operation lever 10, and the magnet 50 that fits in the holding groove 42 is moved together with the holder 40 along with the movement of the holder 40. Move up and down. Unless otherwise specified, the vertical movement of the magnet 50 refers to the upward direction (D position: Z = + 1.5) and downward direction (P) from the neutral position (Z = 0) in FIG. 5B. The movement of the position: Z = −1.5) is shown.

  In addition, the magnet 50 is provided with a through hole 57 that penetrates the disc portion 51 and the cylindrical portion 56. A magnet support shaft 72 of a magnet holder 70 to be described later is inserted into the through hole 57. The magnet 50 rotates around the magnet support shaft 72.

  The protrusion 54 is formed with a U-shaped recess 55 having an open tip. The drive projection 34 of the bracket 30 is inserted into the recess 55. The magnet 50 is driven into the recess 55 when the bracket 30 rotates about the first rotation axis L1 in the direction of the arrow TL or the direction of the arrow TR via the operation lever 10 by the turning operation performed on the operation lever 10. Since the protrusion 34 moves along a circle centered on the first rotation axis L1, the magnet support shaft 72 inserted into the through hole 57 rotates as the third rotation axis L3.

Further, the magnet 50 has a plane 504 in which the thickness T _{1 of the} portion facing the first dimmer detection sensor 91 and the second dimmer detection sensor 92 is orthogonal to the plane 503 in the range of the predetermined rotation angle θ. On the other hand, the first dimmer detection sensor 91 and the second dimmer detection sensor 92 have a shape that is thinner than the thickness T _{2 of the} portion facing the position on the arrangement surface 101 that is plane-symmetrical.

The predetermined range of the rotation angle θ is a rotation range of the magnet 50 based on the turning operation of the operation lever 10, and as an example, a range of 45 ° or more and 135 ° or less. The relationship between the thickness T ₁ and the _second thickness T ₂ is satisfied in at least the range. In addition, the thickness T ₁ is, for example, half the thickness T ₂ . The rotation angle θ of the magnet 50 when the operation lever 10 is in the neutral position is 90 °.

In order to establish the relationship between the thickness T ₁ and the thickness T ₂ , an inclination 530 is formed on the lower surface 53 of the magnet 50. For example, as shown in FIGS. 6A and 6B, the inclination 530 is inclined from the vicinity of the boundary between the N pole and the S pole of the lower surface 53 toward the side surface farthest from the through hole 57. Is formed. That is, the magnet 50 has a smaller volume at the N-pole portion than at the S-pole portion, resulting in a smaller volume. The thickness T ₁ is, for example, half the thickness T ₂ .

  This inclination 530 is provided in order to make the magnetic flux density of the magnetic field 500 acting on the first dimmer detection sensor 91 and the second dimmer detection sensor 92 lower than the magnetic flux density when there is no inclination. That is, the inclination 530 is provided to reduce the influence of the rotation of the magnet 50 on the detection of the vertical movement of the magnet 50.

(Configuration of magnet holder 70)
The magnet holder 70 is positioned and fixed to the lower housing 22 while being fixed to the substrate 100. The magnet holder 70 has a bottom 71, a magnet support shaft 72 formed to project from the bottom 71 toward the magnet 50, and a projecting toward the magnet 50 from the bottom 71 and concentric with the magnet support shaft 72. Wall part 73 etc. formed in the shape. The magnet holder 70 is integrally formed of resin (nonmagnetic material).

  The magnet support shaft 72 is formed to fit in the through hole 57 of the magnet 50 so as to be rotatable and slidable. When the operation lever 10 is operated around the second rotation axis L2, the third support shaft 72 is provided. The magnet 50 is supported to move up and down along the rotation axis L3. The wall portion 73 is provided along the outer periphery of the magnet 50, but the magnet 50 is mainly supported by the magnet support shaft 72. As a modification, the lever switch device 1 has a configuration in which the through hole 57 of the magnet 50 and the magnet support shaft 72 of the magnet holder 70 are not formed, and the magnet 50 is supported by the wall portion 73 so as to be rotatable and vertically movable. It is good also as a structure to be performed.

  Since the operation lever 10, the housing 20, the bracket 30, and the holder 40 described above are disposed near the magnet 50, it is preferable that the operation lever 10, the housing 20, the bracket 30, and the holder 40 be formed of a nonmagnetic material such as resin.

(Configuration of turn detection sensor 80)
The turn detection sensor 80 is configured using, for example, a magnetic detection element such as a Hall element and a magnetoresistive element that detects a change in the magnetic field 500 accompanying the rotation of the magnet 50. In the present embodiment, a Hall element is used.

  For example, as shown in FIGS. 6A and 6B, the turn detection sensor 80 is arranged on the arrangement surface 101 of the substrate 100 so that the third rotation axis L3 passes through the center of the detection surface 800. . The detection surface 800 is a surface that reacts to a change in the magnetic field 500, for example.

  For example, when the turn detection sensor 80 is packaged as one chip including an amplification unit that amplifies a signal, a processing unit that processes a signal, and the like, the magnetic detection element can be arranged at a place other than the center of the chip. There is sex. In the turn detection sensor 80, the first dimmer detection sensor 91, and the second dimmer detection sensor 92 in the present embodiment, the center of the chip does not coincide with the center of the detection surface.

(Configuration of the first dimmer detection sensor 91 and the second dimmer detection sensor 92)
The first dimmer detection sensor 91 and the second dimmer detection sensor 92 are, for example, the approach and separation between the magnet 50 and the arrangement surface 101 associated with the dimmer operation performed on the operation lever 10, that is, the paper surface of FIG. It is configured using a magnetic detection element such as a Hall element and a magnetoresistive element that detects a change in the magnetic field 500 accompanying the movement of the magnet 50 in the vertical direction. In the present embodiment, a Hall element is used.

  As shown in FIG. 6A, the first dimmer detection sensor 91 is obtained by projecting the magnet 50 onto the straight line 506 passing through the intersection 801 between the third rotation axis L3 and the placement surface 101 and the placement surface 101. The detection surface 910 is arranged at the center of the intersection 911 with the outer periphery of the mapping 505.

Further, as shown in FIG. 6A, the second dimmer detection sensor 92 is provided at an intersection 921 between a straight line 507 passing through the intersection 801 between the third rotation axis L3 and the arrangement surface 101 and the outer periphery of the mapping 505. It arrange | positions so that the center of the detection surface 920 may be located. In other words, the second dimmer detection sensor 92 is disposed at a position symmetrical to the first dimmer detection sensor 91 with respect to the plane 503 shown in FIG. That is, the angle formed by the straight line 506 and the plane 503 is the same as the angle formed by the straight line 507 and the plane 503 (arrangement angle θ ₁ ). The plane 503 is a plane that includes the third rotation axis L3 and separates the magnets 50 so as to be mirror images of each other.

First dimmer detection sensor 91 outputs a detection value S _2, the second dimmer detection sensor 92 outputs a detection value S _3. The first dimmer detection sensor 91 and the second dimmer detection sensor 92 are arranged so that the arrangement angle θ ₁ is such that the sum of the detection value S ₂ and the detection value S ₃ is substantially constant.

For example, as shown in FIG. 5B, the magnet 50 moves to three operation positions (D position, neutral position, and P position) according to the dimmer operation of the operation lever 10. For example, when the operation lever 10 is operated in the arrow D direction, the magnet 50 moves from the neutral position (Z = 0) to the upward direction (D position). As an example, the upward movement amount is +1.5 mm. Further, for example, when the operation lever 10 is operated in the arrow P direction, the magnet 50 moves from the neutral position to the downward direction (P position). As an example, the downward movement amount is −1.5 mm. First dimmer detection sensor 91 and the second dimmer detection sensor 92 detects the magnetic flux density of the magnetic field 500 of the magnet 50 in the three operating positions, output to the control unit 150 as a detection value S ₂ and a detection value S ₃ To do.

(Configuration of control unit 150)
The control unit 150 includes, for example, a CPU (Central Processing Unit) that performs operations and processing on acquired data according to a stored program, a RAM (Random Access Memory) that is a semiconductor memory, a ROM (Read Only Memory), and the like. Microcomputer. For example, a program for operating the control unit 150 is stored in the ROM. For example, the RAM is used as a storage area for temporarily storing calculation results and the like.

  As shown in FIG. 6C, the control unit 150 is connected to the turn detection sensor 80, the first dimmer detection sensor 91, and the second dimmer detection sensor 92. The control unit 150 has a threshold value 151.

Control unit 150 is configured to calculate the rotation angle of the magnet 50 on the basis of the detected values S ₁ to turn detection sensor 80 has output.

The control unit 150, and a detection value S ₃ in which the detected value S ₂ of the first dimmer detection sensor 91 has output the second dimmer detection sensor 92 has output the sum, the sum and threshold values 151 obtained by adding And the above-mentioned three operation positions by the dimmer operation are detected.

The control unit 150 determines an operation performed on the operation lever 10 based on the acquired detection values S ₁ to S ₃ and generates operation information S ₄ . Control unit 150, for example, operation information S ₄ through the connector 110 provided on the substrate 100 is configured to output to the vehicle control unit of the vehicle 5.

(About the arrangement of the inclination 530 of the magnet 50 and the dimmer detection sensor)
Fig.7 (a) is a top view which shows rotation of the magnet by the turn operation of the right direction of the lever switch apparatus based on Embodiment, FIG.7 (b) shows a magnet when a lever exists in a neutral position. FIG. 7C is a top view showing the rotation of the magnet by the left turn operation. In FIG. 7 (a) ~ FIG 7 (c), counterclockwise from the upper side of the paper, the rotation angle theta ₂ of the magnet 50 is shown as a 0 ° to 180 °.

FIG. 8A shows the detection value S ₂ of the first dimmer detection sensor, the detection value S _{3 of} the second dimmer detection sensor, and the addition obtained by adding the detection value S ₂ and the detection value S _{3 according} to the embodiment. 8 is a graph of the value (S ₂ + S ₃ ), and FIG. 8B is a graph for explaining detection of the dimmer operation by the first dimmer detection sensor and the second dimmer detection sensor, and FIG. ) Is a graph with respect to the arrangement angle θ ₁ of the first dimmer detection sensor and the second dimmer detection sensor. FIG. 8D shows the detection value S ₂ , the detection value S _3, and the addition value ( it is a graph of _{S 2} + S _3). 8A, 8B, and 8D, the vertical axis represents the magnetic flux density (mT), and the horizontal axis represents the rotation angle θ ₂ (deg) of the magnet 50. In FIG. 8C, the left and right vertical axes are the magnetic flux density (mT), and the horizontal axis is the arrangement angle θ ₁ (deg). 8C, the left vertical axis is for illustrating the difference in magnetic flux density, and the right vertical axis is for illustrating the sum of the maximum values of magnetic flux density. FIG. 8A to FIG. 8D illustrate results of simulation using ANSYS Emag.

FIG. 8D shows a detection value S ₂ , a detection value S _3, and an addition value (S ₂ + S ₃ ) of a cylindrical magnet with no inclination formed as a comparative example. In this comparative example, the arrangement of the first dimmer detection sensor 91 and the second dimmer detection sensor 92 is the same as that in FIG.

When the operation lever 10 is turned to the right (arrow TR direction), as shown in FIG. 7A, the portion of the magnet that faces the first dimmer detection sensor 91 is near the center of the N pole. . Further, when the operation lever 10 is turned in the left direction (arrow TL direction), as shown in FIG. 7C, the magnet portions facing the first dimmer detection sensor 91 have N pole and S pole. Near the boundary. Therefore, the magnetic flux density of the magnetic field acting on the first dimmer detection sensor 91 increases as the rotation angle θ ₂ increases. Therefore, the detection value S _2, as shown in FIG. 8 (d), the soaring of the curve. In FIGS. 8A to 8D, the sign of the magnetic flux density is negative.

Similarly, when the operation lever 10 is turned to the right (arrow TR direction), as shown in FIG. 7A, the portion of the magnet that faces the second dimmer detection sensor 92 is the N pole and the S Near the pole boundary. When the operation lever 10 is turned leftward (in the direction of the arrow TL), as shown in FIG. 7C, the portion of the magnet facing the second dimmer detection sensor 92 is near the center of the N pole. It becomes. Accordingly, the magnetic flux density of the magnetic field acting on the second dimmer detection sensor 92 is lower as the rotation angle θ ₂ is larger, contrary to the first dimmer detection sensor 91. Therefore, the detection value S _3, as shown in FIG. 8 (d), a steadily declining curve. In the comparative example, the absolute value of the difference between the maximum value and the minimum value of the detected value S ₂ and a detection value S ₃ is approximately 36mT, respectively. In the following, the detection value S ₂ and a detection value S ₃ for positive, no need to take the absolute value.

When calculating the sum of the detected value _{S 2} and the detected value _{S 3,} comprising the additional value shown in FIG. 8 (d) and _(S 2 + S _3). This added value has an absolute value of the difference between the maximum value and the minimum value of approximately 20 mT.

Here, when the magnet 50 is formed with an inclination 530, as shown in FIG. 8A, the detection value S _{2 of} the first dimmer detection sensor 91 and the second dimmer detection sensor 92 at the neutral position. of the absolute value is approximately 36mT detected value S _3, since the absolute value of the detected value of the comparative example is approximately 55MT, who inclined 530 is formed is lower flux density detected in the neutral position It has become.

  Even when the magnet 50 rotates in the right direction and the left direction, the portions facing the first dimmer detection sensor 91 and the second dimmer detection sensor 92 are thinner than the S pole portion, that is, the volume. Therefore, the magnetic flux density detected by the first dimmer detection sensor 91 and the second dimmer detection sensor 92 is lower than that of the comparative example. Therefore, even if the magnet 50 rotates and the dimmer detection sensor is positioned near the boundary between the N pole and the S pole, the detected magnetic flux density is lower than that in the comparative example, and as shown in FIG. The absolute value of the difference between the maximum value and the minimum value becomes small (approximately 10 mT).

The absolute value of the difference between the maximum value and the minimum value of the added value (S ₂ + S ₃ ) is about 8 mT as shown in FIG. 8A, and is less than half of the absolute value (about 20 mT) of the difference of the comparative example. It is closer to a straight line. That the difference of the added value (S ₂ + S ₃ ) is close to a straight line means that the magnetic flux density of the magnetic field acting on the first dimmer detection sensor 91 and the second dimmer detection sensor 92 hardly changes due to the rotation of the magnet 50. That is, the influence of rotation of the magnet 50 on the detection of the dimmer operation is small. Accordingly, the first dimmer detection sensor 91 and the second dimmer detection sensor 92 can detect the vertical movement of the magnet 50 due to the dimmer operation without being influenced by the rotation of the magnet 50.

FIG. 8C shows the absolute value of the difference between the maximum value and the minimum value of the magnetic flux density, and the absolute value of the maximum value of the addition value, the arrangement angle of the first dimmer detection sensor 91 and the second dimmer detection sensor 92. It is the graph which showed how it changes with (theta) ₁ . The symbol “◯” in FIG. 8C is the absolute value (magnetic flux max-min) of the difference between the maximum value and the minimum value of the magnetic flux density in the comparative example in which the magnet is not inclined. The symbol “Δ” is the absolute value (S ₂ + S ₃ max) of the added value (S ₂ + S ₃ ). The symbol “□” in FIG. 8C is the absolute value (magnetic flux max-min) of the difference between the maximum value and the minimum value of the magnetic flux density when the magnet is tilted. The symbol is the absolute value (S ₂ + S ₃ max) of the added value (S ₂ + S ₃ ).

When the magnet is not inclined, the absolute value of the difference between the maximum value and the minimum value of the magnetic flux density and the absolute value of the added value (S ₂ + S ₃ ) decrease as the arrangement angle θ ₁ increases. Specifically, the difference between the absolute values of the difference between the maximum value and the minimum value of the magnetic flux density is about 5 mT. The difference between the absolute values of the added values is approximately 34 mT.

On the other hand, when the magnet is inclined, even if the arrangement angle θ ₁ changes, the absolute value of the difference between the maximum value and the minimum value of the magnetic flux density and the change in the absolute value of the added value (S ₂ + S ₃ ) are changed. Is slight. Specifically, the difference in absolute value between the maximum value and the minimum value of the magnetic flux density is approximately 1 mT. The difference between the absolute values of the added values is approximately 7 mT. That is, the absolute value of the difference between the maximum value and the minimum value of the magnetic flux density and the absolute value of the added value (S ₂ + S ₃ ) are within the range of about one-fifth of the comparative example when there is a slope. ing. Therefore, when there is an inclination, changes in the absolute value of the difference between the maximum value and the minimum value of the magnetic flux density and the absolute value of the added value (S ₂ + S ₃ ) due to variations in the arrangement of the dimmer detection sensors are suppressed.

  That is, by forming the slope 530 in the magnet 50, the absolute value of the difference between the maximum value and the minimum value of the magnetic flux density, even if the arrangement of the first dimmer detection sensor 91 and the second dimmer detection sensor 92 varies, It shows that the influence on the variation in the absolute value of the maximum value of the addition value is small.

  FIG. 8B shows magnetic flux densities corresponding to three operation positions by the dimmer operation of the operation lever 10. As described above, when the absolute value of the minimum value and the maximum value of the addition value is narrow, the addition value corresponding to the operation position is not easily affected by the rotation of the magnet 50 as shown in FIG. The threshold value 151 for determining the operation position can be easily set, and even if the threshold value 151 varies, the accurate position can be determined.

(Operation of lever switch device 1)
Below, operation | movement of the lever switch apparatus 1 which concerns on this Embodiment is divided and demonstrated to turn operation and dimmer operation.

(About turn operation)
FIG. 9A is a plan view showing the moving state of the operation lever and the magnet in the right turn operation (operation in the direction of arrow TR) seen from the direction B in FIG. 2, and FIG. 9B is a view in FIG. FIG. 9C is a plan view showing a moving state of the operation lever and the magnet at the neutral position viewed from the B direction, and FIG. 9C is an operation lever at the time of the left turn operation (operation in the arrow TL direction) viewed from the B direction in FIG. It is a top view which shows the movement state of a magnet. FIG. 10 is an upper plan view with the upper housing 21 removed.

  In FIG. 9A, when the operation lever 10 is operated in the arrow TR direction by the turn operation, the operation lever 10 rotates around the first rotation axis L1. The bracket 30 rotates integrally with the operation lever 10, and the drive protrusion 34 also rotates around the first rotation axis L1. Since the concave portion 55 is fitted to the drive protrusion 34, the magnet 50 rotates around the magnet support shaft 72 (third rotation axis L3) as the operation lever 10 rotates. As a result, the direction of the magnetic field 500 passing through the turn detection sensor 80 changes.

  FIG. 9B shows a neutral position when the operation lever 10 is not rotated. In this position state, since the operation lever 10 and the bracket 30 are not rotated, the magnet 50 is not rotated either. As a result, the direction of the magnetic field 500 passing through the turn detection sensor 80 does not change.

  In FIG. 9C, when the operation lever 10 is operated in the arrow TL direction by a turn operation, the operation lever 10 rotates around the first rotation axis L1. The bracket 30 rotates integrally with the operation lever 10, and the drive protrusion 34 also rotates around the first rotation axis L1. Since the concave portion 55 is fitted to the drive protrusion 34, the magnet 50 rotates around the magnet support shaft 72 (third rotation axis L3) as the operation lever 10 rotates. As a result, the direction of the magnetic field 500 passing through the turn detection sensor 80 changes. Note that the change in the direction of the magnetic field 500 is opposite to that when the operation lever 10 is operated in the arrow TR direction.

(Dima operation)
10A is a cross-sectional view taken along the line AA in FIG. 2, and is a partial cross-sectional view illustrating a moving state of the operation lever and the magnet during the dimmer operation in the direction of arrow D. FIG. FIG. 10A is a partial cross-sectional view showing a moving state of the operation lever and the magnet at the neutral position in the section A, and FIG. 10C is a sectional view taken along the line AA in FIG. It is a fragmentary sectional view which shows the movement state of a magnet.

In FIG. 10A, when the operation lever 10 is operated in the direction of arrow D by a dimmer operation, the operation lever 10 rotates around the second rotation axis L2. Since the drive protrusion 14 of the operation lever 10 moves upward, the holder 40 slides upward via the fitting groove 41 that fits into the drive protrusion 14. The magnet 50 held in the holding groove 42 of the holder 40 is supported by the magnet support shaft 72 and slides upward. As a result, the magnetic flux density of the magnetic field 500 that passes through the first dimmer detection sensor 91 and the second dimmer detection sensor 92 disposed below the magnet 50 changes. The added value (S ₂ + S ₃ ) when the turn is operated at the position of the operation lever 10 is a graph indicated by a solid line in FIG. 8B as an example.

FIG. 10B shows a neutral position when the operation lever 10 is not rotated. In this state, the operation lever 10 does not rotate, and the holder 40 does not slide, so the magnet 50 does not slide. As a result, the magnetic flux density of the magnetic field 500 that passes through the first dimmer detection sensor 91 and the second dimmer detection sensor 92 disposed below the magnet 50 does not change. The added value (S ₂ + S ₃ ) when the turn is operated at the position of the operation lever 10 is a graph indicated by a dotted line in FIG. 8B as an example.

In FIG. 10C, when the operation lever 10 is operated in the direction of arrow P by the dimmer operation, the operation lever 10 rotates around the second rotation axis L2. Since the drive protrusion 14 of the operation lever 10 moves downward, the holder 40 slides downward through the fitting groove 41 that is fitted to the drive protrusion 14. The magnet 50 held in the holding groove 42 of the holder 40 is supported by the magnet support shaft 72 and slides downward. As a result, the magnetic flux density of the magnetic field 500 that passes through the first dimmer detection sensor 91 and the second dimmer detection sensor 92 disposed below the magnet 50 changes. The added value (S ₂ + S ₃ ) when the turn operation is performed at the position of the operation lever 10 is a graph indicated by a one-dot chain line in FIG. 8B as an example.

(Effect of embodiment)
The lever switch device 1 according to the present embodiment can detect movement in two directions in a non-contact manner with one magnet. Specifically, in the lever switch device 1, the magnet 50 rotates around the third rotation axis L3 by the turning operation of the operation lever 10, and the magnet 50 is rotated by the third rotation axis L3 by the dimmer operation of the operation lever 10. It is comprised so that it may move along. Further, the lever switch device 1 detects the rotation of the magnet 50 with the turn detection sensor 80, and detects the vertical movement of the magnet 50 with the first dimmer detection sensor 91 and the second dimmer detection sensor 92. Therefore, the lever switch device 1 can detect the movement in the two directions of the turn operation and the dimmer operation in a non-contact manner with one magnet.

Lever switch device 1 is the sum of the detected value S ₂ and a detection value S ₃ of the first dimmer detection sensor 91 and the second dimmer detection sensor 92 is arranged so as to be constant, the influence of rotation of the magnet Suppressed and accurate detection is possible.

  The lever switch device 1 is configured so that the centers of the detection surface 910 and the detection surface 920 are positioned on the mapping 505 in which the first dimmer detection sensor 91 and the second dimmer detection sensor 92 project the magnet 50 onto the arrangement surface 101. Since it is arranged, a change in magnetic flux density can be detected more efficiently than when the center of the detection surface is not located.

  In the lever switch device 1, the magnet 50 has an inclination 530. Since the magnet 50 has the inclination 530, the magnetic flux density of the magnetic field 500 acting on the first dimmer detection sensor 91 and the second dimmer detection sensor 92 is changed to the lower magnetic flux on the opposite side of the portion where the inclination 530 is formed. Since the density can be made lower than the density, the detection of the dimmer operation is hardly affected by the rotation of the magnet 50 and can be detected with high accuracy.

  In the lever switch device 1, the turn detection sensor 80, the first dimmer detection sensor 91, and the second dimmer detection sensor 92 are arranged on the same arrangement surface 101 of the substrate 100. Compared to the case, the positioning of the magnet 50, the turn detection sensor 80, the first dimmer detection sensor 91, and the second dimmer detection sensor 92 is easy.

Here, as a modification, the magnet 50 may have an inclining 530 that is bulged or recessed, and is formed only in the vicinity of a portion that faces the first dimmer detection sensor 91 and the second dimmer detection sensor 92. Also good. Further, as another modified example, the magnet 50, with rotation, always formed thinner than dimmer detection sensor 90 of the opposing portions to the thickness T ₁ is the _second thickness T _2, the magnetic flux density of the _second thickness T ₂ Any shape that is lower than the portion may be used.

  As mentioned above, although some embodiment and modification of this invention were demonstrated, these embodiment and modification are only examples, and do not limit the invention based on a claim. These novel embodiments and modifications can be implemented in various other forms, and various omissions, replacements, changes, and the like can be made without departing from the scope of the present invention. In addition, not all combinations of features described in these embodiments and modifications are necessarily essential to the means for solving the problems of the invention. Furthermore, these embodiments and modifications are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 ... Lever switch apparatus, 5 ... Vehicle, 6 ... Steering, 7 ... Steering column cover, 10 ... Operation lever, 11 ... Insertion part, 12 ... Lever main body, 13 ... Rotating shaft part, 14 ... Drive projection part, 15 ... Insertion Hole, 16 ... moderation piece, 17 ... spring, 20 ... housing, 21 ... upper housing, 21a ... locking portion, 21b ... support hole, 22 ... lower housing, 22a ... locking projection, 22b ... annular Groove, 25 ... moderation block, 25a ... moderation groove, 30 ... bracket, 31 ... rotating shaft, 32 ... annular wall, 33 ... support hole, 34 ... drive projection, 40 ... holder, 41 ... fitting groove, 42 ... Holding groove, 50 ... Magnet, 51 ... Disc part, 52 ... Upper surface, 53 ... Lower surface, 54 ... Projection part, 55 ... Recessed part, 56 ... Cylindrical part, 57 ... Through hole, 70 ... Magnet holder, 71 ... Bottom part 72 ... Magnet support shaft, 7 DESCRIPTION OF SYMBOLS ... Wall part, 80 ... Turn detection sensor, 91 ... 1st dimmer detection sensor, 92 ... 2nd dimmer detection sensor, 100 ... Board | substrate, 101 ... Arrangement surface, 110 ... Connector, 150 ... Control part, 151 ... Threshold Value: 500 ... Magnetic field, 503 ... Plane, 504 ... Plane, 505 ... Mapping, 506 ... Straight line, 507 ... Straight line, 530 ... Inclination, 560 ... Circumferential groove, 800 ... Detection surface, 801 ... Intersection, 910 ... Detection surface, 911 ... Intersection, 920 ... Detection surface, 921 ... Intersection

Claims (3)

A rotating member that rotates around a rotation axis and generates a magnetic field that is plane-symmetric with respect to a plane including the rotation axis;
A rotation angle detection unit that is arranged on the arrangement surface of the substrate and detects a rotation angle of the rotation member;
Detecting approach and separation due to relative movement between the rotating member and the arrangement surface, a straight line passing through the intersection of the rotation axis and the arrangement surface, and an outer periphery of a map obtained by projecting the rotating member on the arrangement surface A first detector arranged at the intersection of
A second detection unit that detects the approach and the separation between the rotating member and the arrangement surface, and is arranged at a position that is plane-symmetric with the first detection unit with respect to the plane;
Based on an addition value obtained by adding the first detection value output from the first detection unit and the second detection value output from the second detection unit, the rotation member and the arrangement surface A determination unit for determining approach and separation, and
A rotational movement detection device comprising: In the rotation member, the first detection unit detects a thickness of a portion facing the first detection unit and the second detection unit within a predetermined rotation angle range with respect to a plane orthogonal to the plane. Thinner than the thickness of the part facing the position on the arrangement surface that is symmetrical with the part and the second detection part,
The rotational movement detection apparatus according to claim 1 . An operation unit capable of performing a first rotation operation about the first rotation axis and a second rotation operation about the second rotation axis intersecting the first rotation axis;
A first conversion unit that converts the first rotation operation performed on the operation unit into rotation around the rotation axis of the rotating member;
A second conversion unit that converts the second rotation operation performed on the operation unit into a relative movement between the rotation member and the arrangement surface;
The rotation movement detection apparatus according to claim 1 or 2 , further comprising:

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