CN102980698A - Magnetic telescopic torque sensor - Google Patents
Magnetic telescopic torque sensor Download PDFInfo
- Publication number
- CN102980698A CN102980698A CN2012102869811A CN201210286981A CN102980698A CN 102980698 A CN102980698 A CN 102980698A CN 2012102869811 A CN2012102869811 A CN 2012102869811A CN 201210286981 A CN201210286981 A CN 201210286981A CN 102980698 A CN102980698 A CN 102980698A
- Authority
- CN
- China
- Prior art keywords
- magnetic shield
- magnetic
- turning axle
- section
- torque sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Power Steering Mechanism (AREA)
Abstract
The invention provides a magnetic telescopic torque sensor for suppressing reduction of detection sensitivity. The magnetic telescopic torque sensor (41) comprises: a rotation shaft (24) provided with magnetic telescopic portions like a magnetic telescope film (82) and the like; magnet exciting coils (85, 85) exciting the magnetic telescope film (82); detection coils (85, 85) detecting changes of magnet characteristics like magnetoconductivity and the like of the magnetic telescope film (82); and a magnet shielding member (54a) at least encloses the magnet exciting coils (85, 85). The rotation shaft (24) is formed by magnetic material. The magnet shielding member (54a) also encloses partially the rotation shaft (24) without a magnetic telescope portion (82). A part of the magnet shielding member (54a) corresponding to the magnet exciting coils (85, 85) is provided with a slit (54as) parallel to a central axis (CL) of the rotation shaft (24).
Description
Technical field
The present invention relates to a kind of magnetostrictive torque sensor.
Background technology
The vehicles such as motor vehicle can possess driven steering device, and driven steering device produces by the assist torque that turn to torque assist of driver to the turning axle place that the operation of steering wheel (bearing circle) produces.By the generation of assist torque, driven steering device can alleviate driver's burden.Driven steering device has turning to the torque sensor that turns to that torque detects, and can be categorized as the torque sensor (magnetostrictive torque sensor) that utilizes magnetostrictive effect to come torque is detected, utilize torque arm to come torque sensor that torque is detected etc. turning to torque etc. to act on torque sensor that the torque on the turning axle detects.
For example patent documentation 1 discloses the magnetostrictive torque sensor that can utilize in driven steering device, in this magnetostrictive torque sensor, as the magnetic shield 20a as shown in Figure 3 of patent documentation 1 be arranged on lid (retaining member) 43 near.In addition, in Fig. 5 of patent documentation 1 (b), lid (retaining member) 43 self doubles as magnetic shield.The magnetostrictive torque sensor that possesses such magnetic shield is difficult to be subject to the impact of the external magnetic field noise (external magnetic field noise) from the outside.Thereby magnetic shield can make the accuracy of detection of magnetostrictive torque sensor improve.
[formerly technical literature]
[patent documentation]
[patent documentation 1] TOHKEMY 2004-309184 communique
But, near as shown in Figure 3 field coil 20d ', the 20e ' of patent documentation 1, disposing in the situation of magnetic shield 20a, the present inventors have found that situation about reducing occurs the detection sensitivity of magnetostrictive torque sensor.That is, under the impact of magnetic shield 20a, diminish such as the inclination of the straight line L10 as shown in Figure 7 of patent documentation 1.
In addition, the steering axle 12b as shown in Figure 3 of patent documentation 1 exposes to the outside.Thereby the present inventors have found that the external magnetic field noise from the top of steering axle 12b enters turning axle 12 and situation that the accuracy of detection of magnetostrictive torque sensor is reduced.
Summary of the invention
One object of the present invention is to provide a kind of magnetostrictive torque sensor that can suppress the reduction of detection sensitivity.Another object of the present invention is to provide a kind of magnetostrictive torque sensor that can suppress the reduction of accuracy of detection.Other purposes of the present invention by with reference to the form shown in the following example, preferred embodiment and accompanying drawing, make the art personnel clearer.
Below, example illustrates according to mode of the present invention in order to understand overview of the present invention easily.
Relate to a kind of magnetostrictive torque sensor according to the first mode of the present invention, it possesses:
Turning axle with magnetostriction section;
Described magnetostriction section is carried out the field coil of excitation;
The magnetic test coil that the variation of the magnetic characteristic of described magnetostriction section is detected;
At least surround the magnetic shield on every side of described field coil,
Described magnetostrictive torque sensor is characterised in that,
Described turning axle is made of magnetic material,
Described magnetic shield also surround the described turning axle with described magnetostriction section part around,
Described magnetic shield has slit with the central axes of described turning axle in the part corresponding with described field coil.
Surround by magnetic shield the turning axle with magnetostriction section part around, the external magnetic field noise that enters into thus the inside of turning axle from the top of turning axle can shift to the magnetic shield side.Consequently, the magnetic flux (towards the external magnetic field of coil noise) in the turning axle reduces.Thus, can suppress the reduction of the accuracy of detection of magnetostrictive torque sensor.
In addition, magnetic shield surround at least field coil around, thereby can suppress the external magnetic field noise of other directions beyond the top from turning axle.Yet the magnetic flux that is produced by field coil reduces because of the vortex flow that flows through magnetic shield, consequently, the detection sensitivity of magnetostrictive torque sensor is reduced.To this, magnetic shield has slit in the part corresponding with field coil, thereby suppresses the reduction of detection sensitivity by slit.
Need to prove that field coil and magnetic test coil can be made of the dual-purpose coil, also can be consisted of by the field coil of special use and the combination of the magnetic test coil of special use.
In the first mode, magnetic shield can have shape cylindraceous.
Have shape cylindraceous by magnetic shield, transfer to the external magnetic field noise of magnetic shield side and advance at the complete cycle of the magnetic shield with shape cylindraceous.Thereby, can reduce the impact of external magnetic field noise.
In the first mode, described magnetic shield can have annulus section in the part corresponding with the described part of the described turning axle that does not have described magnetostriction section and replace described slit, and and part and the distance between the described central shaft of the opposed described magnetic shield of described field coil can be than the distance between described annulus section and the described central shaft.
Because annulus section surrounds the part of the turning axle do not have magnetostriction section, the external magnetic field noise that therefore enters into the inside of turning axle from the top of turning axle shifts to annulus section (magnetic shield) side easily.In addition, the magnetic flux of transferring to magnetic shield side (annulus section side) from rotation shaft side (with the part of the opposed magnetic shield of field coil) when passing in magnetic shield, can make by the part with the opposed magnetic shield of field coil this magnetic flux from field coil away from.Thus, can reduce the impact of the external magnetic field noise that in magnetic shield, passes.
The art personnel can easily understand, can further change in the situation that does not break away from spirit of the present invention according to mode of the present invention shown in the example.
Description of drawings
Fig. 1 is the synoptic diagram with driven steering device of magnetostrictive torque sensor.
Fig. 2 is the one-piece construction figure of driven steering device shown in Figure 1.
Fig. 3 is the 3-3 line cut-open view of Fig. 2.
Fig. 4 is near the enlarged drawing of magnetic shield of Fig. 3.
Fig. 5 is the magnetic shield of Fig. 3 and the stereographic map of sensor housing.
Fig. 6 is the enlarged drawing of variation of the magnetic shield of presentation graphs 3.
Symbol description:
10 ... driven steering device
20 ... steering
21 ... steering wheel
22 ... steering axle
23 ... the universal shaft joint
24 ... turning axle
24a ... one end
24b ... the other end
24i ... linking part
25 ... pinion and rack
26 ... rack shaft
27 ... drag link
28 ... steering knuckle
29 ... steered wheel
31 ... pinion wheel
32 ... tooth bar
40 ... assist torque mechanism
41 ... turn to torque sensor
42 ... control part
43 ... motor
44 ... reducing gear
45 ... worm shaft
46 ... worm screw
47 ... worm gear
51 ... housing
51a ... upper opening
52 ... ball-and-socket joint
53 ... the dust seal guard shield
54a ... magnetic shield
54as ... slit
54b ... magnetic shield
55 ... sensor housing
56 ... oil sealing
57 ... screw
58 ... bolt
61 ... clutch shaft bearing
62 ... the second bearing
70 ... rack guide
71 ... guide portion
72 ... Compress Spring
73 ... adjust bolt
74 ... connect to member (Japanese: when て section material)
75 ... set nut
81 ... magnetostriction section
82 ... magnetostriction section
83 ... test section
84 ... coil rack
85 ... coil
92 ... connector
Embodiment
Below explanation preferred embodiment be used for the present invention is understood easily.Thereby what the art personnel should give attention is that the present invention is not limited unreasonably by the embodiment of following explanation.
Fig. 1 schematically shows the driven steering device that turns to torque sensor 41 10 that is incorporated with as magnetostrictive torque sensor.Driven steering device 10 comprises: the steering 20 from the steering wheel 21 of vehicle to the steered wheel (front-wheel) 29,29 of vehicle; This steering 20 is applied assist torque, is the assist torque mechanism 40 of additional torque.
In steering 20, on steering wheel 21 via steering axle 22 and universal shaft joint 23,23 and link turning axle 24 (also being referred to as " pinion shaft, input shaft "), on turning axle 24, link rack shaft 26 via pinion and rack 25, the two ends of rack shaft 26 via about drag link 27,27 and steering knuckle 28,28 and steered wheel 29,29 about linking.Pinion and rack 25 comprises: the pinion wheel 31 that has at turning axle 24; The tooth bar 32 that has at rack shaft 26.
According to steering 20, by the driver steering wheel 21 is turned to, thereby can turn to torque and via pinion and rack 25 steered wheel 29,29 be turned to by this.
Assist torque mechanism 40 is mechanisms as follows, namely, detect by the torque that turns to that turns to 41 pairs of torque sensors to impose on the steering 20 of steering wheel 21, pass through control part 42 according to this detection signal and produce control signal, and according to this control signal and by the motor 43 generations assist torque (additional torque) corresponding with turning to torque, assist torque is transmitted to turning axle 24 via reducing gear 44, and then 20 pinion and rack 25 transmits from turning axle 24 to steering with assist torque.
Overview to control part 42 describes, and is as described below.
The current sensor that control part 42 detects by power circuit, to motor current, input interface circuit, microprocessor, output interface circuit, FET bridge diagram etc. consist of.Input interface circuit is taken into dtc signal, vehicle speed signal or motor rotating signal etc. from the outside.Microprocessor carries out vector controlled according to the dtc signal that is taken into by input interface circuit or vehicle speed signal etc. to motor 43.Output interface circuit converts the output signal of microprocessor to the FET bridge diagram driving signal.The FET bridge diagram is the on-off element that passes into three-phase alternating current to motor 43 (brushless motor).
Namely, control part 42 comes target setting q shaft current and target d shaft current according to the rotating signal of the rotor that detects by the vehicle speed signal that turns to dtc signal, detected by not shown vehicle speed sensor that turns to that torque sensor 41 detects and by rotation sensor etc.
Then, control part 42 is according to the rotating signal that is detected by rotation sensor and the current signal that is detected by motor current sensor, so that actual q shaft current and the actual d shaft current mode consistent with above-mentioned target q shaft current and target d shaft current of carrying out after the d-q conversion are carried out PI control.
According to driven steering device 10, add the compound torque that the assist torque (additional torque) of motor 43 obtains by the torque that turns to the driver, can utilize rack shaft 26 that steered wheel 29,29 is turned to.
Reducing gear 44 for example is made of Worm gear mechanism.Below, reducing gear 44 is suitably renamed as " Worm gear mechanism 44 ".
Fig. 2 shows the one-piece construction of driven steering device shown in Figure 1 10, and it is left part and right part to be cut open and the figure that illustrates.As shown in Figure 2, rack shaft 26 is being housed in the housing 51 that extends along overall width direction (left and right directions of Fig. 2) along mode in axial sliding.In rack shaft 26, from the outstanding length direction two ends of housing 51 via ball-and- socket joint 52,52 and link drag link 27,27 is arranged.The both ends of rack shaft 26 are covered with guard shield 53,53 by dust seal.
As shown in Figures 2 and 3, housing 51 is taken in the latter half, pinion and rack 25 and the Worm gear mechanism 44 of turning axle 24, and the upper opening 51a that forms in the upper end is equipped with magnetic shield 54b.Such housing 51 with respect to the opposition side of upper opening 51a, namely the bottom is by inaccessible.
Be described in further detail, as shown in Figure 3, turning axle 24 disposes in the mode that the inside at housing 51 erects, and is provided with successively two magnetostriction sections 81,82 clutch shaft bearing 61, pinion wheel 31, the second bearing 62, the magnetostrictive torque sensor 41 from an end 24a (lower surface) towards other end 24b (upper surface).
Turning axle 24 is under the state of the inside that is installed on housing 51, and the first half connects sensor housing 55 and upward extension from upper opening 51a.Two magnetostriction sections 81,82 are positioned at sensor housing 55.
As shown in Figure 3, housing 51 supports turning axle 24 for rotating via clutch shaft bearing 61 and the second bearing 62 on inner peripheral surface.That is, the end portion of turning axle 24 is supported as rotating by housing 51 via clutch shaft bearing 61.In the pinion wheel 31 of the center section of turning axle 24 and the position between the worm gear 47 via the second bearing 62 by housing 51 supportings for rotating.In Fig. 3, CL is the center line (axle center) of turning axle 24.
55 pairs of sensor housings turn to torque sensor 41 (test section 83) to take in, and sensor housing 55 is surrounded by magnetic shield 54a, 54b.Sensor housing 55 is made of nonmagnetic substances such as resins.Turning axle 24 connect sensor housings 55 about, and be provided with for the oil sealing 56 that turning axle 24 is sealed on the top of sensor housing 55.In the example of Fig. 3, magnetic shield 54a (the first magnetic shield) for example forms tubular, via for example sensor housing 55 and oil sealing 56 and surround coil 85 for example, 85 and magnetostriction section 82 around, and also surround turning axle 24 (part that does not have the turning axle 24 of magnetostriction section 82) between magnetostriction section 82 and the linking part 24i around.In the example of Fig. 3, magnetic shield 54b (the second magnetic shield) for example forms tubular, and forms flange.Magnetic shield 54b surround coil 85 for example, 85 and magnetostriction section 81 around.
In the example of Fig. 3, magnetic shield is made of magnetic shield 54a and these two members of magnetic shield 54b, but also can for example be made of a member.For magnetic shield 54a and magnetic shield 54b, in the back narration.
In Fig. 3, motor 43 is members that not shown motor reel flatly extends in housing 51 to the front side from the opposite side of paper.Motor reel is the output shaft that has linked the worm shaft 45 of Worm gear mechanism 44.Worm shaft 45 possesses integrally formed worm screw 46.The both ends of worm shaft 45 are supported as rotating by housing 5 via bearing.
Turning to torque sensor 41 is magnetostrictive torque sensors, and it comprises: turning axle 24; Be arranged on the surface of this turning axle 24, according to torque and the up and down a pair of magnetostriction section 81,82 that Magnetostrictive Properties (magnetic characteristic) changes; Be configured in this magnetostriction section 81, near 82 and coil 85,85,85,85 to detecting in magnetostriction section 81,82 magnetostrictive effect that produce.
In other words, turn to torque sensor 41 to comprise: to be arranged on a pair of magnetostriction section 81,82 on the turning axle 24; Be arranged on magnetostriction section 81,82 around test section 83.
Roughly contain at the alloy film of Ni-Fe system in the situation of Ni of 50 % by weight, it is large that magnetostriction constant becomes, the tendency that therefore exists magnetostrictive effect to uprise, thus preferably use the material of such Ni containing ratio.For example, as the alloy film of Ni-Fe system, uses the Ni that contains 50～70 % by weight and remain material as Fe.
Need to prove that magnetostrictive film 81,82 can be the film of ferromagnetism body also, be not limited to the alloy film of Ni-Fe system.For example, magnetostrictive film 81,82 also can be the alloy film of Co-Fe system or the alloy film of Sm-Fe system.
83 pairs of magnetostrictive effect in magnetostrictive film 81,82 generations of test section are carried out electro-detection, and its detection signal is exported as the torque detection signal, and this test section 83 is accommodated in the sensor housing 55.This test section 83 comprises: the coil rack 84 of the tubular that turning axle 24 has connected; Multilaminate coiled coil 85,85,85,85 on coil rack 84.By four coils 85,85,85,85 are used as magnetic test coil respectively, detection signal not only can comprise the torque detection signal thus, also can comprise fault detection signal.Need to prove, from four magnetic test coils 85,85,85,85 magnetic flux magnetostrictive film 81,82 is carried out excitation, four magnetic test coils 85,85,85,85 also play a role as four field coils.Four coils 85,85,85,85 can be called respectively the field coil of dual-purpose magnetic test coil.That is, in the example of Fig. 3, four coils 85,85,85,85 are respectively the dual-purpose coil.
Set magnetostrictive film 81,82 and the gap of coil rack 84 in the scope about 0.5～ 1mm.Coil 85,85,85,85 in the scope of 1～100kHz by with the suitable for example frequency excitation about 10kHz, when turning to torque in turning axle 24, the magnetoconductivity that has been endowed anisotropic magnetostriction section 81,82 changes, thereby coil 85,85,85,85 inductance also change.
In the example of Fig. 3, opposed and dispose two field coils (magnetic test coil) 85,85 with the first magnetostrictive film 81, opposed and dispose two field coils (magnetic test coil) 85,85 with the second magnetostrictive film 82, but distribution and electronic circuit between these field coils (magnetic test coil) 85,85,85,85 and the control part 42 shown in Figure 1 illustrate.The distribution that connector 92 can be used in field coil (magnetic test coil) 85,85,85,85 sides is connected with the distribution of control part 42 sides.The distribution of these members that are omitted among Fig. 3 and electronic circuit can adopt for example structure as shown in Figure 2 of TOHKEMY 2009-264812 communique.
Also can the example of Fig. 3 be out of shape, opposed and dispose an independent special-purpose field coil with the first magnetostrictive film 81 and the second magnetostrictive film 82, can also for example adopt the structure as shown in Figure 6 of Japanese documentation 1.
Linking part 24i is via universal shaft joint 23 shown in Figure 1,23 and steering axle 22 and the axial end portion that links with steering wheel 21.Linking part 24i for example is made of the serration that is used for binding universal shaft joint 23.Linking part 24i and turning axle 24 are integrally formed.
Fig. 4 shows near magnetic shield 54a, the 54b of the configuration test section 83 of Fig. 3, and Fig. 5 shows and assembles magnetic shield 54a, 54b before and the stereographic map of sensor housing 55.
In the example of Fig. 5, magnetic shield 54a has the first 54a1 of annulus section.As shown in Figure 4, the first 54a1 of annulus section surround the turning axle 24 do not have magnetostriction section 82 part around, and and magnetostriction section 82 and linking part 24i between the part of turning axle 24 opposed.Magnetic shield 54a (the first 54a1 of annulus section) is 0.5～1mm for example with the gap of turning axle 24, but is not defined as this scope.The first 54a1 of annulus section surrounds turning axle 24 and opposed with it, and therefore, the external magnetic field noise that enters into the inside of turning axle 24 from the top (linking part 24i side) of turning axle 24 shifts to the first 54a1 of annulus section side of magnetic shield 54a easily.Consequently, the magnetic flux (towards the external magnetic field of coil 85 noise) in the turning axle 24 reduces.Thus, can suppress the reduction of the accuracy of detection of magnetostrictive torque sensor 41.The magnetoconductivity of magnetic shield 54a (the first 54a1 of annulus section) than the high situation of the magnetoconductivity of turning axle 24 under, magnetic flux moves to magnetic shield 54a easily.
But, because turning axle 24 needs mechanical reversing and bending strength usually, therefore with ferroalloy as mother metal, and also need to heat-treat.Because this thermal treatment can residually have carbon in mother metal.The turning axle 24 that contains the impurity such as carbon is like this compared with the turning axle that does not contain impurity, is subject to easily the impact of external magnetic field noise.In other words, turning axle 24 is made of magnetic material.The first 54a1 of annulus section or magnetic shield 54a not with turning axle 24 opposed situations under, entered by the top from turning axle 24 such as the caused alternating flux of alternating magnetic field of engine, generator, motor etc., in from the detection signal that turns to torque sensor 41, produce noise, thereby cause the reduction of accuracy of detection.As the replacement of low-pass filter, just can make such noise to magnetic shield 54a side shifting by the first 54a1 of annulus section.
In the example of Fig. 5, magnetic shield 54a for example has the slit 54as parallel with the central shaft CL of turning axle 24 with the coil 85 that magnetostrictive film 82 is carried out excitation, 85 corresponding parts.As mentioned above, the 3rd 54a5 of annulus section of magnetic shield 54a surround coil 85,85 around, thereby can suppress external magnetic field noise from other directions beyond the top of turning axle 24.But, simultaneously in the 3rd 54a5 of annulus section, the magnetic flux that is produced by coil (field coil) 85,85 reduces because of the vortex flow that flows through magnetic shield 54a (the 3rd 54a5 of annulus section), the magnetic flux that consequently, can detect via magnetostrictive film 82 by coil (magnetic test coil) 85,85 also reduces.Like this, the 3rd 54a5 of annulus section reduces the detection sensitivity of torque sensor 41.Therefore, has slit 54as according to magnetic shield 54a of the present invention with coil 85,85 corresponding parts.Can make by the part (the 3rd 54a5 of annulus section) that does not have slit 54as the external magnetic field noise from coil 85,85 away from, and can suppress by slit 54as the reduction of the detection sensitivity of torque sensor 41.
In the example of Fig. 5, magnetic shield 54b does not have the slit parallel with central shaft CL, but magnetic shield 54b for example also can have the slit parallel with the central shaft CL of turning axle 24 with the coil 85 that magnetostrictive film 81 is carried out excitation, 85 corresponding parts.
Fig. 6 is the enlarged drawing of variation of magnetic shield 54a, the 54b of presentation graphs 3.In the example of Fig. 6, the 3rd 54a5 of annulus section of magnetic shield 54a can surround four coils 85,85,85,85 and two magnetostriction sections 81,82 around.In the example of Fig. 6, the 3rd 54a5 of annulus section of magnetic shield 54a has slit 54as with four coils 85,85,85,85 corresponding parts.
The present invention is not limited to above-mentioned illustrative embodiment, and the art personnel also can change the embodiment shown in the above-mentioned example easily in the scope that claims comprise.
Claims (3)
1. magnetostrictive torque sensor, it possesses:
Turning axle with magnetostriction section;
Described magnetostriction section is carried out the field coil of excitation;
The magnetic test coil that the variation of the magnetic characteristic of described magnetostriction section is detected;
At least surround the magnetic shield on every side of described field coil,
Described magnetostrictive torque sensor is characterised in that,
Described turning axle is made of magnetic material,
Described magnetic shield also surround the described turning axle with described magnetostriction section part around,
Described magnetic shield has slit with the central axes of described turning axle in the part corresponding with described field coil.
2. magnetostrictive torque sensor as claimed in claim 1 is characterized in that,
Described magnetic shield has shape cylindraceous.
3. magnetostrictive torque sensor as claimed in claim 1 or 2 is characterized in that,
Described magnetic shield has annulus section in the part corresponding with the described part of the described turning axle that does not have described magnetostriction section and replaces described slit,
And the part of the opposed described magnetic shield of described field coil and the distance between the described central shaft are than the distance between described annulus section and the described central shaft.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011192943A JP5439446B2 (en) | 2011-09-05 | 2011-09-05 | Magnetostrictive torque sensor |
| JP2011-192943 | 2011-09-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102980698A true CN102980698A (en) | 2013-03-20 |
| CN102980698B CN102980698B (en) | 2015-09-09 |
Family
ID=47854924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210286981.1A Active CN102980698B (en) | 2011-09-05 | 2012-08-13 | Magnetostrictive torque sensor |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5439446B2 (en) |
| CN (1) | CN102980698B (en) |
| BR (1) | BR102012022346A2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105987779A (en) * | 2015-03-19 | 2016-10-05 | 本田技研工业株式会社 | Magnetostrictive torque sensor and electric power steering apparatus |
| CN107628185A (en) * | 2016-07-18 | 2018-01-26 | 行安机电股份有限公司 | Torsion force indicator |
| CN107867328A (en) * | 2016-09-23 | 2018-04-03 | 本田技研工业株式会社 | The manufacture method of magnetostrictive torque sensor and magnetostrictive torque sensor |
| CN113167665A (en) * | 2018-12-11 | 2021-07-23 | 蒂森克虏伯普利斯坦股份公司 | Magnetic shielding for a torque sensor of an electromechanical power steering system in a motor vehicle |
| CN117330222A (en) * | 2023-12-01 | 2024-01-02 | 常州市昌隆电机股份有限公司 | Woodworking motor axial torque detection device and detection method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016209190A1 (en) * | 2016-05-26 | 2017-11-30 | Audi Ag | Cover arrangement for a steering housing |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0943070A (en) * | 1995-08-01 | 1997-02-14 | Kubota Corp | Magnetostrictive torque sensor |
| JP2003042862A (en) * | 2001-07-30 | 2003-02-13 | Suzuki Motor Corp | Magnetostriction type torque sensor |
| JP2004309184A (en) * | 2003-04-02 | 2004-11-04 | Honda Motor Co Ltd | Torque sensor |
| CN1666095A (en) * | 2002-07-03 | 2005-09-07 | 铃木株式会社 | Magnetostrictive torque sensor shaft and method for manufacturin the same |
| JP2009210346A (en) * | 2008-03-03 | 2009-09-17 | Honda Motor Co Ltd | Magnetostrictive torque sensor, magnetostrictive torque sensor manufacturing method, and vehicle steering apparatus |
| CN101750009A (en) * | 2009-12-31 | 2010-06-23 | 南京磁谷科技有限公司 | Magnetic-shielding eddy current sensor probe and method for reducing eddy current effect |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4732473B2 (en) * | 2008-03-03 | 2011-07-27 | 本田技研工業株式会社 | Magnetostrictive torque sensor and vehicle steering apparatus |
-
2011
- 2011-09-05 JP JP2011192943A patent/JP5439446B2/en not_active Expired - Fee Related
-
2012
- 2012-08-13 CN CN201210286981.1A patent/CN102980698B/en active Active
- 2012-09-04 BR BR102012022346A patent/BR102012022346A2/en not_active IP Right Cessation
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0943070A (en) * | 1995-08-01 | 1997-02-14 | Kubota Corp | Magnetostrictive torque sensor |
| JP2003042862A (en) * | 2001-07-30 | 2003-02-13 | Suzuki Motor Corp | Magnetostriction type torque sensor |
| CN1666095A (en) * | 2002-07-03 | 2005-09-07 | 铃木株式会社 | Magnetostrictive torque sensor shaft and method for manufacturin the same |
| JP2004309184A (en) * | 2003-04-02 | 2004-11-04 | Honda Motor Co Ltd | Torque sensor |
| JP2009210346A (en) * | 2008-03-03 | 2009-09-17 | Honda Motor Co Ltd | Magnetostrictive torque sensor, magnetostrictive torque sensor manufacturing method, and vehicle steering apparatus |
| CN101750009A (en) * | 2009-12-31 | 2010-06-23 | 南京磁谷科技有限公司 | Magnetic-shielding eddy current sensor probe and method for reducing eddy current effect |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105987779A (en) * | 2015-03-19 | 2016-10-05 | 本田技研工业株式会社 | Magnetostrictive torque sensor and electric power steering apparatus |
| CN107628185A (en) * | 2016-07-18 | 2018-01-26 | 行安机电股份有限公司 | Torsion force indicator |
| CN107867328A (en) * | 2016-09-23 | 2018-04-03 | 本田技研工业株式会社 | The manufacture method of magnetostrictive torque sensor and magnetostrictive torque sensor |
| CN113167665A (en) * | 2018-12-11 | 2021-07-23 | 蒂森克虏伯普利斯坦股份公司 | Magnetic shielding for a torque sensor of an electromechanical power steering system in a motor vehicle |
| CN113167665B (en) * | 2018-12-11 | 2023-08-29 | 蒂森克虏伯普利斯坦股份公司 | Torque sensor device and electromechanical steering system |
| CN117330222A (en) * | 2023-12-01 | 2024-01-02 | 常州市昌隆电机股份有限公司 | Woodworking motor axial torque detection device and detection method thereof |
| CN117330222B (en) * | 2023-12-01 | 2024-01-26 | 常州市昌隆电机股份有限公司 | Woodworking motor axial torque detection device and detection method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5439446B2 (en) | 2014-03-12 |
| BR102012022346A2 (en) | 2013-10-29 |
| JP2013053953A (en) | 2013-03-21 |
| CN102980698B (en) | 2015-09-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102980698B (en) | Magnetostrictive torque sensor | |
| US20090224500A1 (en) | Device for determining an angle of rotation | |
| EP1464936B1 (en) | Torque sensor | |
| EP2233383B1 (en) | Vehicle steering device | |
| EP2947442B1 (en) | Torque sensor and electric power steering system | |
| JP2001133337A (en) | Magnetostrictive torque sensor and electric power steering device loaded with magnetostrictive torque sensor | |
| WO2008044689A1 (en) | Torque detector, method of producing the torque detector, and electric power steering device | |
| JP2011020489A (en) | Steering control device | |
| CN102574541A (en) | Method of manufacturing motorized power steering device | |
| CN108502012A (en) | Transfer and rotation direction sensor system | |
| JP4801816B2 (en) | Electric power steering device | |
| CN104684790B (en) | Driven steering device | |
| JP5852484B2 (en) | Torque sensor | |
| JP2015194430A (en) | Vehicle power steering system and manufacturing method of the same | |
| CN112519874A (en) | Steering device | |
| JP5365833B2 (en) | Vehicle steering system | |
| JP2011148494A (en) | Electric power steering device | |
| JP5397672B2 (en) | Electric power steering device | |
| JP4275998B2 (en) | Torque sensor and electric power steering device | |
| JP5852485B2 (en) | Torque sensor | |
| JP4833635B2 (en) | Torque sensor and electric power steering device | |
| JP5597607B2 (en) | Magnetostrictive torque sensor | |
| JP4718955B2 (en) | Torque sensor and electric power steering device | |
| JP2005003461A (en) | Torque sensor and electric power steering apparatus | |
| KR20000025986A (en) | Torque sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |