CN109863364A - Rotation detection device, switch unit and transmission system - Google Patents
Rotation detection device, switch unit and transmission system Download PDFInfo
- Publication number
- CN109863364A CN109863364A CN201780065694.9A CN201780065694A CN109863364A CN 109863364 A CN109863364 A CN 109863364A CN 201780065694 A CN201780065694 A CN 201780065694A CN 109863364 A CN109863364 A CN 109863364A
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- Prior art keywords
- magnetic
- magnetic field
- generation section
- detection device
- rotation detection
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
Abstract
A kind of rotation detection device can be realized cost cutting, switch unit and transmission system are provided.It is characterized in that, in the rotation detection device (322) of the magnetic field generation section (M1) for having the end for being set to rotary shaft (2124) and the magnetic-field detecting unit (M2) being configured near magnetic field generation section (M1), magnetic field generation section (M1) has ferromagnetic body (M11) and soft-magnetic body (M12), it is rotated with the rotary work of rotary shaft (2124), magnetic-field detecting unit (M2) detection changing magnetic field with magnetic field generation section (M1) rotation, magnetic field generation section (M1B, M1C) hole is formed in central part, magnetic-field detecting unit (M2) is configured in the inside in the hole.
Description
Technical field
The present invention relates to rotation detection device, switch unit and transmission system, particularly preferably it is applied to have magnetic field production
The rotation detection device of life portion and magnetic-field detecting unit, switch unit and transmission system.
Background technique
A kind of rotation detection device is disclosed in patent document 1, is consisted of and is configured permanent magnet in the end of rotary shaft,
Magnetic field sensor is oppositely disposed in the permanent magnet.More specifically, it discloses such as flowering structure, i.e., is arranged in the end of rotary shaft
The fixing component of fixed permanent magnet inhibits permanent magnet to be set to the end of rotary shaft in fixing component setting recessed portion etc.
Overhang when portion.The axial length of rotary shaft entirety when thereby, it is possible to shorten provided with rotation detection device.
Existing technical literature
Patent document
Patent document 1: Japanese Patent No. 4704065
Summary of the invention
Subject to be solved by the invention
But rotation detection device documented by patent document 1 uses permanent magnet.In this case, due to relatively more high
Expensive permanent magnet will increase the cost of rotation detection device entirety.Also, have the switch unit of the rotation detection device with
And the cost of transmission system also will increase.Especially in the case where manufacturing in large quantities, the increase of cost can become significant.
The present invention is proposed in view of the above, is proposed a kind of rotation detection device that can be realized cost cutting, is changed
Shelves unit and transmission system.
A technical solution to solve project
In order to solve the project, a kind of rotation detection device is proposed in the present invention, which is characterized in that is having setting
Magnetic field generation section (M1) in the end of rotary shaft (2124) and the magnetic-field detecting unit that is configured near magnetic field generation section (M1)
(M2) in rotation detection device (222), magnetic field generation section (M1) has ferromagnetic body (M11) and soft-magnetic body (M12), with
The rotary work of rotary shaft (2124) and rotated, magnetic-field detecting unit (M2) detection with magnetic field generation section (M1) rotation and
Changing magnetic field, magnetic field generation section (M1B, M1C) are formed with hole in central part, and magnetic-field detecting unit (M2) configures in the hole
Portion.
Invention effect
In accordance with the invention it is possible to which cost of implementation is cut down.
Detailed description of the invention
Fig. 1 is the overall structure figure of transmission system.
Fig. 2 is the overall structure figure of switch unit.
Fig. 3 is the overall structure figure of rotation detection device.
Fig. 4 is the overall structure figure of other rotation detection devices.
Fig. 5 is the overall structure figure of other rotation detection devices.
Fig. 6 is the overall structure figure of other rotation detection devices.
Description of symbols
1... transmission system；20...GSU (switch unit)；322... rotation detection device；M1(M1A,M1B,M1C)...
Magnetic field generation section；M11 (M11A, M11B, M11C) ... ferromagnetic body；M12 (M12A, M12B, M12C) ... soft-magnetic body；
M2... magnetic-field detecting unit.
Specific embodiment
Hereinafter, being described in detail referring to attached drawing to an embodiment of the invention.In addition, embodiment documented by following
It is but an embodiment of the invention, the present invention is not limited by it.
(1) overall structure of transmission system
Fig. 1 shows the overall structure of the transmission system 1 in present embodiment.Transmission system 1 is the speed change of control with vehicle
The system of relevant work is not e.g. automatically connected or is cut off clutch by the clutch operating of driver to carry out
AMT (Automated Manual Transmission, auto-manual transmission) system of variable-speed processing.
Transmission system 1 has 10, switch unit motion control unit (TCU:Transmission Control Unit)
20 and speed changer 30 etc. (GSU:Gear Shift Unit).
TCU10 has CPU (Central Processing Unit, central processing unit) and memory etc..TCU10
When input is from speed change requests of electronic equipments such as CLU (Change Lever Unit, gear change units), it is based on the speed change
It is required that and the other informations such as speed and accelerator opening, calculate target shift speed shelves.And instruction is switched to and is calculated by TCU10
Target shift speed shelves signal as switching require (S1) to GSU20 export.
GSU20 is motor type switch unit, has actuator 21 and sensor 22 etc..In addition, about GSU20, herein
Motor type switch unit is imagined to be illustrated, but may be not necessarily limited to this, such as be also possible to the gear shift of vapour-pressure type, fluid pressure type
Unit.
Actuator 21 has gear selecting motor, gear shift motor, rotary shaft and contact pin (striker) etc..Actuator 21 is when defeated
When entering switching requirement (S1) from TCU10, make gear selecting motor and gear shift motor operations.Contact pin that can move in the axial direction
And the mode that can be rotated integrally with rotary shaft is incorporated into rotary shaft, contact pin moves in the axial direction with the work of gear selecting motor
(gear selecting work), and as the work of gear shift motor rotates preset distance (gear shift work).
It is worked by the gear selecting and gear shift work, correspondingly with the position of contact pin, the gear of gear engages, in speed change
Variable-speed processing is carried out in device 30.As a result, the desired driving torque for meeting speed change request is exported from speed changer 30.
Sensor 22 is the device for monitoring the position of contact pin of GSU20 always.That is the monitoring of sensor 22 passes through speed changer 30
Engaged actual gear, monitors actual gear.
Specifically, the detection of sensor 22 makes the contact pin of gear selecting motor and gear shift motor operations and movement with GSU20
Position, obtain detection information (S2).And the acquired detection information (S2) is transformed to as TCU10 energy by sensor 22
The detection signal (S3) of the electric signal enough read is exported to TCU10.
In addition, the position that TCU10 will appreciate that the contact pin at current time by reading detection signal (S3).And it being capable of base
In the current gear indicated by the detection signal (S3) and the information etc. of speed (not shown) herein, will further switch
It is required that (S1) is exported to GSU20, and actuator 21 is made to work.At this point, TCU10 makes clutch actuator work (not shown) herein
And carry out the cutting or connection of clutch.Thereby, it is possible to automatically control the gear to be suitble to speed.
Speed changer 30 has multiple gears corresponding with each gear of 1 grade~6 grades and reverse gear.Pass through the control of TCU10
It makes and carries out gear selecting work and gear shift work in GSU20, in addition, the automatically connection or cutting of progress clutch, thus makes
The gear of desired gear engages and exports the driving torque from engine.
(2) structure of GSU
Fig. 2 shows the overall structures of GSU20.GSU20 is configured to have actuator 21 and sensor 22.First to actuating
Device 21 is illustrated.
Actuator 21 has gear selecting motor 211 and gear shift motor 212.Rotary shaft (shift selection shaft) 2111 is can rotate
Mode is connected to gear selecting motor 211, and when gear selecting motor 211 works, shift selection shaft 2111 carries out rotary work.
Screw thread is formed on the periphery of shift selection shaft 2111, first ball screw 2112 threadingly engages in screw thread.Therefore, exist
Gear selecting motor 211 work and shift selection shaft 2111 rotate when, first ball screw 2112 moves on shift selection shaft 2111 along axial D1.
On the other hand, other rotary shafts (contact pin rotary shaft) 2124 are with parallel with the shift selection shaft 2111 and can rotate
Mode configures.Spline is formed on the periphery of contact pin rotary shaft 2124, contact pin 2125 is chimeric with the spline.
Contact pin 2125 is configured in a manner of engaging with first ball screw 2112, can be moved along axial D2.
Thus, it works in gear selecting motor 211, when shift selection shaft 2111 rotates, first ball screw 2112 is being selected along axial D1
It is moved on shelves axis 2111, with the movement of the axial D1 of the first ball screw 2112, is sticked in first ball screw 2112
Contact pin 2125 moves (gear selecting work) along axial D2.
Gear shift motor 212 is different from 2124 height of contact pin rotary shaft and configures on orthogonal direction.Rotary shaft (gear shift
Axis) 2121 gear shift motor 212 is also connected in a manner of it can rotate, when gear shift motor 212 works, selector shaft 2121 is carried out
Rotary work.
Screw thread is formed on the periphery of selector shaft 2121, the second ball-screw 2122 threadingly engages in screw thread.Thus,
Gear shift motor 212 works, and when selector shaft 2121 rotates, the second ball-screw 2122 is moved along axial D3.
It is formed with pin 2122A in the second ball-screw 2122, the notch of pin 2122A and the end for being formed in bar 2123
2123A engaging.The end of contact pin rotary shaft 2124 is fixed in the end of the bar 2123 for the side opposite side for forming jagged 2123A
Portion.
Therefore, when gear shift motor 212 works, and selector shaft 2121 rotates, the second ball-screw 2122 is being changed along axial D3
It is moved on shelves axis 2121, at this point, selling 2122A via notch 2123A along the end of axial D3 pressing lever 2123, bar 2123 is along rotation
Direction D4 rotation.
When bar 2123 is rotated along direction of rotation D4, contact pin rotary shaft 2124 and in 2124 upper spline of contact pin rotary shaft
In conjunction with contact pin 2125 (gear shift work) is integrally rotated along direction of rotation D5.As a result, the desired gear in speed changer 30
It can engage.
Then sensor 22 is illustrated.Sensor 22 has position detecting device 221 and rotation detection device
222.Position detecting device 221 is for example configured at the side of contact pin 2125.And detect the position (choosing of the axial D2 of contact pin 2125
File location), it will test information (S2) and be transformed to detection signal (S3), exported to TCU10.
Top end part of the rotation detection device 222 for example with contact pin rotary shaft 2124 is oppositely arranged.And detect contact pin rotation
The rotation angle of axis 2124 calculates the rotation angle on the direction of rotation D5 of the contact pin 2125 correspondingly determined with the rotation angle
(shift pattern) is used as detection information (S2).And it transforms it into detection signal (S3) and is exported to TCU10.
Here, the rotation detection device 222 in present embodiment is configured to have magnetic field generation section and magnetic-field detecting unit.
In the present embodiment, it is desirable to realize the cost cutting of the rotation detection device 222.About details referring to Fig. 3 below
~Fig. 6 is illustrated.
(3) structure of rotation detection device
Fig. 3 shows the front view structure and cross section structure of rotation detection device 222.Front view structure is shown on the top of Fig. 3
Structure out and be contact pin rotary shaft 2124 from Fig. 2 axial direction (X-direction) from when structure.In addition, cross section structure be
Structure shown in the lower part of Fig. 3 and be in the case where rotation detection device 222 are vertically truncated at the position of straight line Y1 from Y2
Structure when direction is observed.
Rotation detection device 222 is configured to have magnetic field generation section M1 and magnetic-field detecting unit M2.Magnetic field generation section M1 by
The soft-magnetic bodies such as the ferromagnetic bodies such as permanent magnet M11 and iron M12 is constituted.In addition, soft-magnetic body M12 can also be with other than iron
It is made of cobalt, nickel or alloy.By using soft-magnetic body M12 in magnetic field generation section M1, more expensive magnet can be cut down
Usage amount can be realized the cost cutting of magnetic field generation section M1 entirety.
The ferromagnetic body M11 and soft-magnetic body M12 of rotation detection device 222 are cylinder or quadrangle.In addition, making
In the case where the both ends for the longitudinal direction that the one side of two quadrangles of soft-magnetic body M12 is adhered to ferromagnetic body M11 respectively,
Two soft-magnetic body M12 are configured in a manner of extending along the longitudinal direction of ferromagnetic body M11.
In this case, magnetic field generation section M1 forms magnetic flux B from the pole N towards S in the space of the underface of ferromagnetic body M11
The magnetic field of pole.
On the other hand, magnetic-field detecting unit M2 is configured to opposite with ferromagnetic body M11 in the underface of ferromagnetic body M11.
In this case, magnetic flux B direction it is orthogonal with the center line C1 of magnetic-field detecting unit M2, even if such as magnetic-field detecting unit M2 only detect
Quadrature component in magnetic flux B also can properly detect the variation in magnetic field.Also, magnetic-field detecting unit M2 will can properly be examined
The detection information measured is exported as detection signal (S2) to TCU10.
For the rotation detection device 222 constituted in this way, the construction in magnetic field generation section M1 is simple and magnetic field generates
Ratio shared by soft-magnetic body M12 in portion M1 is more, therefore, can significantly cut down the cost of manufacture.
(4) other structures of rotation detection device
Fig. 4 shows the front view structure and cross section structure of other rotation detection device 222A.Front view structure is in Fig. 4
Structure shown in top and structure when being from the X-direction of Fig. 2.In addition, cross section structure is in the knot shown in the lower part of Fig. 4
Structure and be in the case where rotation detection device 222A is vertically truncated at the position of straight line Y1 from the direction Y2 when structure.
Below in relation to the structure of the rotation detection device 222A of Fig. 4, only to compared with the rotation detection device 222 of Fig. 3
Different structures are illustrated.
The rotation detection device 222 of rotation detection device 222A and Fig. 3 the difference is that, make ferromagnetic body M11A
Two quadrangles the one side longitudinal direction that is adhered to soft-magnetic body M12A respectively both ends in the case where, two ferromagnetism
Body M11A is configured in a manner of extending along the longitudinal direction of soft-magnetic body M12A.
Even if in this case, magnetic field generation section M1A also can form magnetic in the space of the underface of soft-magnetic body M12A
Lead to B from the pole N towards the magnetic field of the pole S.And magnetic-field detecting unit M2 being capable of properly detection magnetic by the quadrature component of detection magnetic flux B
The variation of field.
In addition, the rotation detection device 222A constituted in this way and rotation detection device shown in Fig. 3 222 are same, is produced from magnetic field
Construction in life portion M1A is simply and ratio shared by the soft-magnetic body M12A in magnetic field generation section M1 is more, therefore, can be significantly
Cut down the cost of manufacture.
Fig. 5 shows the front view structure and cross section structure of rotation detection device 222B.Front view structure is shown on the top of Fig. 5
Structure out and structure when being from the X-direction of Fig. 5.In addition, cross section structure is in the structure shown in the lower part of Fig. 5 and is
Structure when in the case where rotation detection device 222B being vertically truncated at the position of straight line Y1 from the direction Y2.
Below in relation to the structure of the rotation detection device 222B of Fig. 5, only to compared with the rotation detection device 222 of Fig. 3
Different structures are illustrated.
Ferromagnetic body M11B is in form the annulus shape in circular hole in circle center portion.On the other hand, soft-magnetic body
M12B has bowed shape.Soft-magnetic body M12B is configured to be adhered to ferromagnetism respectively in the face for the arc for making two bowed shapes
The string of two bowed shapes is opposite in the case where the pole the N side in the hole of body M11B and the inner wall of the pole S side.
In this case, magnetic field generation section M1B forms magnetic flux B from the soft-magnetic body M12B of the pole N is geomagnetic into towards by magnetic
Turn to the magnetic field of the soft-magnetic body M12B of the pole S.When gear shift motor 212 works, and bar 2123 carries out rotary work, along with this,
Magnetic field generation section M1B is also rotated along direction of rotation D6.Magnetic field generates variation at this time.By detecting the magnetic field by magnetic-field detecting unit M2
Variation, be able to detect bar 2123 carry out rotary work when rotation angle.
Magnetic-field detecting unit M2 is configured at the inside in the hole of ferromagnetic body M11B.Herein, magnetic flux B is as described above from being magnetized
The soft-magnetic body M12B of the pole S is geomagnetic into for the soft-magnetic body M12B direction of the pole N, near magnetic field generation section M1B, inside hole
Magnetic flux density maximum (magnetic field is most strong).Therefore, by configuring magnetic-field detecting unit M2 inside the hole, detection accuracy can be made to mention
It is high.
In addition, magnetic-field detecting unit M2 be configured to it is opposite with 2 strings of soft-magnetic body M12B.In this case, magnetic flux B
Direction is orthogonal with the center line C1 of magnetic-field detecting unit M2, even if for example magnetic-field detecting unit M2 only detects the quadrature component in magnetic flux B,
Also the variation in magnetic field can properly be detected.And magnetic-field detecting unit M2 being capable of the detection that is good and properly detecting by precision
Information is exported as detection signal (S2) to TCU10.
Further, since magnetic-field detecting unit M2 configuration is in the inside in the hole of ferromagnetic body M11B, thus magnetic field generation section M1B with
Axial distance between magnetic-field detecting unit M2 is 0.Thus, it integrally can be realized as rotation detection device 222B further small
Type.
Fig. 6 shows the front view structure and cross section structure of other rotation detection device 222C.Front view structure is in Fig. 6
Structure shown in top, be from the X-direction of Fig. 6 in the case where structure.In addition, cross section structure is shown in the lower part of Fig. 6
Structure out, be in the case where rotation detection device 222C is vertically truncated at the position of straight line Y1 from the direction Y2 when
Structure.
Hereinafter, the structure of the rotation detection device 222C about Fig. 6, only to compared with the rotation detection device 222 of Fig. 5
Different structures are illustrated.
The rotation detection device 222B of rotation detection device 222C and Fig. 5 the difference is that, ferromagnetic body M11C is
Quadrangle has the shape in the hole for foring the quadrangle smaller than periphery in central part.In addition, the rotation detection device with Fig. 5
222B also differ in that soft-magnetic body M12C is also quadrangle, to be adhered to respectively by three faces of two quadrangles
The one side of two quadrangles is opposite each other in the case where the pole the N side in the hole of ferromagnetic body M11C and the inner wall of the pole S side
Mode configures.
It, also can be same with the rotation detection device 222B of Fig. 5 in the case where the rotation detection device 222C constituted in this way
The cost for reducing to sample rotation detection device 222C realizes further miniaturization while improving detection accuracy.
(5) effect of present embodiment
To sum up, according to the present embodiment, using ferromagnetic body M11 (M11A, M11B, M11C) and soft-magnetic body M12
(M12A, M12B, M12C) is used as magnetic field generation section M1 (M1A, M1B, M1C), and magnetic field is strongest near magnetic field generation section M1
Position configures magnetic-field detecting unit M2, and to detect rotation angle, the shift pattern for thus detecting contact pin 2125 therefore can be in reality
Ready-made is realized the raising and miniaturization of detection accuracy while reduction.
Claims (7)
1. a kind of rotation detection device, which is characterized in that in the magnetic field generation section for having the end for being set to rotary shaft (2124)
(M1) and in the rotation detection device (222) of magnetic-field detecting unit (M2) that is configured near the magnetic field generation section (M1),
The magnetic field generation section (M1) has ferromagnetic body (M11) and soft-magnetic body (M12), with the rotary shaft (2124)
Rotary work and rotated,
Magnetic-field detecting unit (M2) detection changing magnetic field with the magnetic field generation section (M1) rotation,
The magnetic field generation section (M1B, M1C) is formed with hole in central part,
Inside of magnetic-field detecting unit (M2) configuration in the hole.
2. rotation detection device according to claim 1, which is characterized in that
The soft-magnetic body (M12B, M12C) is adhered to the pole the N side in the hole and the inner wall of the pole S side respectively and is oppositely disposed.
3. rotation detection device according to claim 2, which is characterized in that
The magnetic field generation section (M1B, M1C) is in annulus shape or quadrangle form.
4. rotation detection device described in any one of claim 1 to 3, which is characterized in that
The magnetic-field detecting unit (M2) configuration the magnetic field generation section (M1) underface and configure on rotation axis.
5. rotation detection device according to any one of claims 1 to 4, which is characterized in that
The ferromagnetic body (M11) is smaller than the soft-magnetic body (M12).
6. a kind of switch unit, which is characterized in that in the switch unit (20) for having rotation detection device (222),
The rotation detection device (222) has the magnetic field generation section (M1) for the end for being set to rotary shaft (2124) and is configured at
Magnetic-field detecting unit (M2) near the magnetic field generation section (M1),
The magnetic field generation section (M1) has ferromagnetic body (M11) and soft-magnetic body (M12), with the rotary shaft (2124)
Rotary work and rotated,
Magnetic-field detecting unit (M2) detection changing magnetic field with the magnetic field generation section (M1) rotation,
The magnetic field generation section (M1B, M1C) is formed with hole in central part,
Inside of magnetic-field detecting unit (M2) configuration in the hole.
7. a kind of transmission system, which is characterized in that in the transmission system (1) for having switch unit (20),
The switch unit () has rotation detection device (222),
The rotation detection device (222) has the magnetic field generation section (M1) for the end for being set to rotary shaft (2124) and is configured at
Magnetic-field detecting unit (M2) near the magnetic field generation section (M1),
The magnetic field generation section (M1) has ferromagnetic body (M11) and soft-magnetic body (M12), with the rotary shaft (3124)
Rotary work and rotated,
Magnetic-field detecting unit (M2) detection changing magnetic field with the magnetic field generation section (M1) rotation,
The magnetic field generation section (M1B, M1C) is formed with hole in central part,
Inside of magnetic-field detecting unit (M2) configuration in the hole.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016208660A JP2018072022A (en) | 2016-10-25 | 2016-10-25 | Rotation detection device, gear shift unit, and transmission system |
| JP2016-208660 | 2016-10-25 | ||
| PCT/JP2017/037880 WO2018079413A1 (en) | 2016-10-25 | 2017-10-19 | Rotation detecting device, gear shift unit, and transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109863364A true CN109863364A (en) | 2019-06-07 |
Family
ID=62023381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780065694.9A Withdrawn CN109863364A (en) | 2016-10-25 | 2017-10-19 | Rotation detection device, switch unit and transmission system |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2018072022A (en) |
| CN (1) | CN109863364A (en) |
| WO (1) | WO2018079413A1 (en) |
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| Publication number | Publication date |
|---|---|
| JP2018072022A (en) | 2018-05-10 |
| WO2018079413A1 (en) | 2018-05-03 |
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Application publication date: 20190607 |