CN203323936U - Hall torque sensor for steering system - Google Patents
Hall torque sensor for steering system Download PDFInfo
- Publication number
- CN203323936U CN203323936U CN2013202957189U CN201320295718U CN203323936U CN 203323936 U CN203323936 U CN 203323936U CN 2013202957189 U CN2013202957189 U CN 2013202957189U CN 201320295718 U CN201320295718 U CN 201320295718U CN 203323936 U CN203323936 U CN 203323936U
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- utmost point
- torque sensor
- magnetic force
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Abstract
The utility model discloses a Hall torque sensor for a steering system. The Hall torque sensor comprises a torsion beam, an input shaft, an output shaft, a lower cover, a magnetic induction element part and a magnetic offset part. The Hall torque sensor further comprises a tubular magnetic force generation part and a collection ring fixing ring, the tubular magnetic force generation part includes an input shaft installation part and a magnetic force generation ring fixed at the bottom of the input shaft installation part, the outer side wall of the magnetic force generation ring is provided with an upper magnet ring and a lower magnet ring, a second gap is arranged between the upper magnet ring and the lower magnet ring, the magnetic force generation ring is hollowly sleeved at the inner side of a plurality of metal sheets and can circumferentially rotate relative to the metal sheets, the top of the collection ring fixing ring is provided with an upper collection ring and the bottom of the collection ring fixing ring is provided with a lower collection ring, the upper collection ring is provided with a downward-inclining connecting piece, the lower collection ring is provided with an upward-inclining connecting piece, and the downward-inclining connecting piece and the upward-inclining connecting piece are connected with a signal input end of the magnetic induction element part. With the Hall torque sensor, torque inspection can be completed with just one magnetic induction, and the torsion parameter detection accuracy is improved.
Description
Technical field
The utility model relates to the torque sensor technical field, refers to particularly a kind of torque sensor of the Hall-type for steering.
Background technology
Reluctance force detection type torque sensor conventional in prior art has input shaft and output shaft, and the upper end of this input shaft is connected with vehicle steering, and the upper end of output shaft is connected with the lower end of input shaft by turning round beam.The lower end of output shaft is connected with wheel.The lower end of input shaft and the upper end of output shaft are covered by shell, and torque sensor and drive unit also are arranged in this shell.Above-mentioned input shaft has permanent magnet, and in this permanent magnet, polarity changes at regular intervals.In addition, output shaft is fixedly connected with the detection ring with gear structure, and this detection ring is corresponding with the polarity number of permanent magnet, and this detection ring made by ferromagnetic material, and ferromagnetic material and permanent magnet produce magnetic induction.Also be provided with the fixed test ring corresponding with detection ring on shell, on the fixed test ring, chip be set.
When driver's direction of operating dish, revolving force is delivered to input shaft.Because rotarily driving, input shaft turns round the beam rotation.And by turning round beam, rotation amount is delivered to output shaft.Thereby wheel is along the direction rotation of direction of operating dish.Now be arranged on the permanent magnet on input shaft and be arranged on relative torsion between the detection ring with gear structure on output shaft cause this permanent magnet and detection ring toward each other area change.Now, the magnetic flux in detection ring changes, the magnetic flux change information on fixed test ring induction detection ring, and by this communication to chip, thereby can be detected by the windup-degree with respect to input shaft output shaft.
Yet, during above-mentioned conventional structure work, detection ring is along with output shaft continuously rotates, the magnetic force that causes permanent magnet to produce there will be larger fluctuation.In addition, the magnetic flux that permanent magnet produces is for the first time by the detection ring generation magnetic induction of rotation, then for the second time by fixed detection ring generation magnetic induction.Magnetic flux, because twice magnetic induction of experience reduces or distortion, causes the torsion parameter detecting precision between output shaft and input shaft lower.
The utility model content
The purpose of this utility model is exactly that a kind of torque sensor of the Hall-type for steering will be provided, and this sensor can improve the torsion parameter detecting precision between output shaft and input shaft in the magnetic force fluctuation that reduces the permanent magnet generation.
For realizing this purpose, the torque sensor of the Hall-type for steering that the utility model is designed, it comprises turns round beam, input shaft, output shaft, lower cover, the magnetic induction part part covers with being arranged on down the magnetic counteracting part that also the relative lower cover of energy rotates in a circumferential direction, input shaft is connected with output shaft by turning round beam, magnetic is offset part top and along the circumferential direction evenly is provided with a plurality of sheet metals, form the first gap between the adjacent metal sheet, described output shaft is fixedly connected with magnetic and offsets part, it is characterized in that: it also comprises the tubular magnetic force generation part be fixedly connected with input shaft, with lower cover, be fixedly connected with and empty set at the collection ring set collar of above-mentioned a plurality of sheet metal peripheries, wherein, tubular magnetic force generating unit is divided the magnetic force initial ring that comprises the input shaft installation portion and be fixed on input shaft installation portion bottom, the lower magnet ring that this magnetic force initial ring lateral wall is provided with the upper magnet ring and mates with the upper magnet ring, be provided with the second gap between upper magnet ring and lower magnet ring, described magnetic force initial ring empty set circumferentially be rotated relative to sheet metal at the inboard also energy of above-mentioned a plurality of sheet metals, the top of described collection ring set collar is provided with the collection ring, the bottom that gathers the ring set collar is provided with lower collection ring, upper collection is equipped with the brace that has a down dip, lower collection is equipped with the updip brace corresponding with the brace that has a down dip, the brace that has a down dip all is connected magnetic induction part signal input part partly with the updip brace.
Described upper magnet ring and lower magnet ring form by the polylith N utmost point magnet of alternately arranging and S utmost point magnet, under the N utmost point magnet of described upper magnet ring, are the S utmost point magnet of lower magnet ring, under the S utmost point magnet of upper magnet ring, are the N utmost point magnet of lower magnet ring.
The height of described sheet metal be more than or equal to upper magnet ring, lower magnet ring and the second gap height and; The height of described sheet metal be more than or equal to collection ring, lower collection ring and gather the ring set collar height and.
Described each N utmost point magnet is identical with the thickness of S utmost point magnet.
Described magnetic induction part part is having a down dip between brace and updip brace.
Distance between described upper collection ring and lower collection ring is greater than the distance had a down dip between brace and updip brace.
The number of described sheet metal equals the number of N utmost point magnet or the S utmost point magnet of each magnet ring.
The utility model also comprises the upper cover corresponding with lower cover, and described input shaft is through upper cover, and described tubular magnetic force generation part, collection ring set collar and magnetic are offset partly and is wrapped in upper cover and lower cover.
The beneficial effects of the utility model are:
1) because collection ring of the present utility model does not continuously rotate with output shaft, the magnetic force that makes N utmost point magnet and S utmost point magnet produce not there will be larger fluctuation, the utility model only needs the inspection that a time magnetic induction can complete moment of torsion in addition, has obviously improved the accuracy of detection of reversing parameter.
2) upper collection ring and lower collection ring are delivered in the first direct clearance sending and receiving that magnetic flux is offset part by magnetic, and they directly contact with the magnetic induction part part, therefore can reduce the loss of magnetic flux.The utility model only needs a magnetic induction can complete the moment of torsion inspection like this.
3), because the distance between the upper collection ring that gathers the ring set collar and lower collection ring is greater than the distance had a down dip between brace and updip brace, can prevent the strength decreased of the magnetic flux that is collected.
4) by the magnetic force induction componentry being integrated into to a chip, reduce number and the manufacturing step of parts, further reduced manufacturing cost and manufacturing time.
The accompanying drawing explanation
Fig. 1 is blast structural representation of the present utility model;
Fig. 2 is sectional structure schematic diagram of the present utility model;
Fig. 3 is the perspective view after the utility model is removed upper cover and lower cover;
The two-dimensional position stretch-out view that Fig. 4 is magnet and sheet metal when in the utility model, input shaft is torqued at utmost to left;
Wherein, 1-turn round beam, 2-input shaft, 3-output shaft, 4-lower cover, 5-magnetic offset part, 6-sheet metal, the 7-the first gap, 8-tubular magnetic force occur part, 8.1-input shaft installation portion, 8.2-magnetic force initial ring, 9-collections ring set collar, 10-upper magnet ring, 11-lower magnet ring, 12-upper gather encircle, 13-under collection ring, the 14-brace that has a down dip, 15-updip brace, 16-magnetic induction part part, the 17-the second gap, 18-N utmost point magnet, 19-S utmost point magnet, 20-upper cover.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
The torque sensor of the Hall-type for steering shown in Fig. 1 ~ 3, it comprises turns round beam 1, input shaft 2, output shaft 3, lower cover 4, magnetic induction part part 16 be arranged on lower cover 4 on and the magnetic counteracting part 5 that can relative lower cover 4 rotates in a circumferential direction, input shaft 2 is connected with output shaft 3 by turning round beam 1, magnetic is offset part 5 tops and along the circumferential direction evenly is provided with a plurality of sheet metals 6, form the first gap 7 between adjacent metal sheet 6, described output shaft 3 is fixedly connected with magnetic and offsets part 5, it also comprises the tubular magnetic force generation part 8 be fixedly connected with input shaft 2, with lower cover 4, be fixedly connected with and empty set at the collection ring set collar 9 of above-mentioned a plurality of sheet metal 6 peripheries, wherein, tubular magnetic force generation part 8 comprises input shaft installation portion 8.1 and is fixed on the magnetic force initial ring 8.2 of input shaft installation portion 8.1 bottoms, the lower magnet ring 11 that these magnetic force initial ring 8.2 lateral walls are provided with upper magnet ring 10 and mate with upper magnet ring 10, be provided with the second gap 17 between upper magnet ring 10 and lower magnet ring 11, magnetic force initial ring 8.2 empty sets circumferentially be rotated relative to sheet metal 6 at the inboard also energy of above-mentioned a plurality of sheet metals 6, the top of described collection ring set collar 9 is provided with collection ring 12, the bottom that gathers ring set collar 9 is provided with lower collection ring 13, upper collection ring 12 is provided with the brace 14 that has a down dip, lower collection ring 13 is provided with the updip brace 15 corresponding with the brace 14 that has a down dip, have a down dip brace 14 and updip brace 15 all is connected the signal input part of magnetic induction part part 16.12 pairs of upper magnet rings of upper collection ring 10 are collected through the magnetic force in the first gap 7, and 13 pairs of lower magnet rings of lower collection ring 11 are collected through the magnetic force in the first gap 7.Magnetic induction part part 16 receives and above gathers the magnetic force that ring 12 and lower collection ring 13 are collected, and the variation of above-mentioned magnetic force is converted to the parameter of moment of torsion, has realized the detection of moment of torsion.
In technique scheme, it is rotatable but can not move on lower cover 4 that magnetic is offset part 5; Described collection ring set collar 9 is fixedly connected with and is placed in above-mentioned a plurality of sheet metal 6 peripheries and do not contact with sheet metal 6 with upper cover 20 and lower cover 4.9 of above-mentioned collection ring set collars play and support and the fixing effect that gathers ring
In technique scheme, upper magnet ring 10 and lower magnet ring 11 form by the polylith N utmost point magnet 18 of alternately arranging and S utmost point magnet 19, under the N utmost point magnet 18 of upper magnet ring 10, being the S utmost point magnet 19 of lower magnet ring 11, is the N utmost point magnet 18 of lower magnet ring 11 under the S utmost point magnet 19 of upper magnet ring 10.
In technique scheme, the height of sheet metal 6 be more than or equal to upper magnet ring 10, lower magnet ring 11 and the second gap 17 height and; The height of described sheet metal 6 be more than or equal to collection ring 12, lower collection ring 13 and gather ring set collar 9 height and.
In technique scheme, each N utmost point magnet 18 is identical with the thickness of S utmost point magnet 19.
In technique scheme, magnetic induction part part 16 is having a down dip between brace 14 and updip brace 15.
In technique scheme, the distance between upper collection ring 12 and lower collection ring 13 is greater than the distance had a down dip between brace 14 and updip brace 15.
In technique scheme, the number of sheet metal 6 equals the number of N utmost point magnet 18 or the S utmost point magnet 19 of each magnet ring.This design is because a pair of N utmost point magnet 18 and S utmost point magnet 19 are wanted a corresponding sheet metal 6, in the process of rotation, the part area that N utmost point magnet 18 and S utmost point magnet 19 are blocked by sheet metal 6 changes, magnetic force will change, doing multipair N utmost point magnet 18 and S utmost point magnet 19 is exactly to amplify at double this magnetic force change, so this magnetic force change will be the identical linear rule that can not destroy this variation 19 li of every pair of N utmost point magnet 18 and S utmost point magnets.So accomplish that sheet metal 6 is corresponding one by one with N utmost point magnet 18 or the S utmost point magnet 19 of each magnet ring.
In technique scheme, it also comprises the upper cover corresponding with lower cover 4 20, described input shaft 2 is through upper cover 20, and described tubular magnetic force generation part 8, collection ring set collar 9 and magnetic are offset part 5 and is wrapped in upper cover 20 and lower cover 4, and above-mentioned upper cover 20 and lower cover 4 are for preventing entering of dust.
In technique scheme, if the amount of the amount of output shaft 3 rotation and input shaft 2 rotations is identical and output shaft 3 and input shaft 2 between windup-degree be zero, the boundary member between N utmost point magnet 18 and S utmost point magnet 19 is positioned at the center of sheet metal 6.
In technique scheme, if output shaft 3 rotates to its maximum to the left or to the right with respect to input shaft 2, the S utmost point magnet 19 of the N utmost point magnet 18 of upper magnet ring 10 and lower magnet ring 11 exposes by the first gap 7 simultaneously, or the N utmost point magnet 18 of the S utmost point magnet 19 of upper magnet ring 10 and lower magnet ring 11 exposes by the first gap 7 simultaneously.
In technique scheme, it is too small to prevent through the magnetic flux in the first gap 7 with the spacing that gathers the ring set collar that the spacing in each the first gap 7 should be greater than magnet as far as possible.
In technique scheme, gather ring set collar 9 and be set to separate and the magnetic force through the first gap 7 is carried out and detected with sheet metal 6 outside surfaces of magnetic counteracting part 5.
During the utility model work: steering wheel for vehicle rotarily drives input shaft 2 rotations, input shaft 2 drives output shaft 3 rotations by turning round beam 1, output shaft 3 is connected with wheel, the power of bearing circle is passed to wheel, now, tubular magnetic force generation part 8 is with input shaft 2 synchronous rotaries, magnetic is offset part 5 with output shaft 3 synchronous rotaries, due to the effect of turning round beam 1, can produce moment of torsion between input shaft 2 and output shaft 3, the magnet ring of tubular magnetic force generation part 8 and magnetic are offset the relative rotation of the sheet metal 6 of part 5, 12 pairs of upper magnet rings of upper collection ring 10 are collected through the magnetic force in the first gap 7, 13 pairs of lower magnet rings of lower collection ring 11 are collected through the magnetic force in the first gap 7.Magnetic induction part part 16 receives and above gathers the magnetic force that ring 12 and lower collection ring 13 are collected, and the variation of above-mentioned magnetic force is converted to the parameter of moment of torsion, has realized the detection of moment of torsion.
As Fig. 4 constitutional diagram that is the torsion that produces of left: when the driver makes bearing circle rotate to left. make due to the friction between wheel and road surface between input shaft 2 and output shaft 3 and exist and reverse.That is to say, twisting states be connect input shaft 2 and output shaft 3 turn round beam 1 in produce.If torsional capacity increases gradually, the area that exposes of the N utmost point magnet 18 that exposes area and lower left of upper left S utmost point magnet 19 increases.Therefore, there are differences between the magnetic force induced in upper collection ring 12 by the first gap 7 and the magnetic force that induces in lower collection ring 13, and magnetic induction part part 16 can detect this species diversity, realize that moment of torsion detects.
The content that this instructions is not described in detail belongs to the known prior art of professional and technical personnel in the field.
Claims (8)
1. the torque sensor of the Hall-type for steering, it comprises turns round beam (1), input shaft (2), output shaft (3), lower cover (4), magnetic induction part part (16) is offset part (5) with the magnetic that is arranged on lower cover (4) above and the relative lower cover of energy (4) rotates in a circumferential direction, input shaft (2) is connected with output shaft (3) by turning round beam (1), magnetic is offset part (5) top and along the circumferential direction evenly is provided with a plurality of sheet metals (6), form the first gap (7) between adjacent metal sheet (6), described output shaft (3) is fixedly connected with magnetic and offsets part (5), it is characterized in that: it also comprises that part (8) occurs the tubular magnetic force be fixedly connected with input shaft (2), with lower cover (4), be fixedly connected with and empty set at the collection ring set collar (9) of above-mentioned a plurality of sheet metals (6) periphery, wherein, the magnetic force initial ring (8.2) that part (8) comprises input shaft installation portion (8.1) and is fixed on input shaft installation portion (8.1) bottom occurs in tubular magnetic force, the lower magnet ring (11) that this magnetic force initial ring (8.2) lateral wall is provided with upper magnet ring (10) and mates with upper magnet ring (10), be provided with the second gap (17) between upper magnet ring (10) and lower magnet ring (11), described magnetic force initial ring (8.2) empty set circumferentially be rotated relative to sheet metal (6) at the inboard also energy of above-mentioned a plurality of sheet metals (6), the top of described collection ring set collar (9) is provided with collection ring (12), the bottom that gathers ring set collar (9) is provided with lower collection ring (13), upper collection ring (12) is provided with the brace that has a down dip (14), lower collection ring (13) is provided with the updip brace (15) corresponding with the brace that has a down dip (14), the brace (14) that has a down dip all is connected the partly signal input part of (16) of magnetic induction part with updip brace (15).
2. the torque sensor of the Hall-type for steering according to claim 1, it is characterized in that: described upper magnet ring (10) and lower magnet ring (11) form by the polylith N utmost point magnet (18) of alternately arranging and S utmost point magnet (19), under the N utmost point magnet (18) of described upper magnet ring (10), being the S utmost point magnet (19) of lower magnet ring (11), is the N utmost point magnet (18) of lower magnet ring (11) under the S utmost point magnet (19) of upper magnet ring (10).
3. the torque sensor of the Hall-type for steering according to claim 1 is characterized in that: the height of described sheet metal (6) be more than or equal to upper magnet ring (10), lower magnet ring (11) and the second gap (17) height and; The height of described sheet metal (6) be more than or equal to collection ring (12), lower collection ring (13) and gather ring set collar (9) height and.
4. the torque sensor of the Hall-type for steering according to claim 2, it is characterized in that: described each N utmost point magnet (18) is identical with the thickness of S utmost point magnet (19).
5. the torque sensor of the Hall-type for steering according to claim 1 is characterized in that: described magnetic induction part part (16) is positioned between the brace that has a down dip (14) and updip brace (15).
6. the torque sensor of the Hall-type for steering according to claim 1 is characterized in that: the distance between described upper collection ring (12) and lower collection ring (13) is greater than the distance between the brace that has a down dip (14) and updip brace (15).
7. the torque sensor of the Hall-type for steering according to claim 2, it is characterized in that: the number of described sheet metal (6) equals the number of N utmost point magnet (18) or the S utmost point magnet (19) of each magnet ring.
8. the torque sensor of the Hall-type for steering according to claim 1, it is characterized in that: it also comprises the upper cover (20) corresponding with lower cover (4), described input shaft (2) passes upper cover (20), and described tubular magnetic force partly (8), collection ring set collar (9) and magnetic counteracting part (5) occurs and is wrapped in upper cover (20) and lower cover (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202957189U CN203323936U (en) | 2013-05-27 | 2013-05-27 | Hall torque sensor for steering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202957189U CN203323936U (en) | 2013-05-27 | 2013-05-27 | Hall torque sensor for steering system |
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| Publication Number | Publication Date |
|---|---|
| CN203323936U true CN203323936U (en) | 2013-12-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202957189U Expired - Lifetime CN203323936U (en) | 2013-05-27 | 2013-05-27 | Hall torque sensor for steering system |
Country Status (1)
| Country | Link |
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| CN (1) | CN203323936U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403340A (en) * | 2014-09-15 | 2016-03-16 | 联创汽车电子有限公司 | Non-contact torque sensor |
| CN107346696A (en) * | 2016-05-04 | 2017-11-14 | 法雷奥电机控制***公司 | For the magnetic part of Hall sensor, include its electric component/booster |
| CN111556955A (en) * | 2018-01-04 | 2020-08-18 | Lg伊诺特有限公司 | Sensing device |
| WO2023058568A1 (en) * | 2021-10-05 | 2023-04-13 | 株式会社デンソー | Torque detection device |
-
2013
- 2013-05-27 CN CN2013202957189U patent/CN203323936U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403340A (en) * | 2014-09-15 | 2016-03-16 | 联创汽车电子有限公司 | Non-contact torque sensor |
| CN105403340B (en) * | 2014-09-15 | 2018-04-17 | 联创汽车电子有限公司 | Non-contact torque sensor |
| CN107346696A (en) * | 2016-05-04 | 2017-11-14 | 法雷奥电机控制***公司 | For the magnetic part of Hall sensor, include its electric component/booster |
| CN111556955A (en) * | 2018-01-04 | 2020-08-18 | Lg伊诺特有限公司 | Sensing device |
| CN111556955B (en) * | 2018-01-04 | 2023-11-14 | Lg伊诺特有限公司 | Sensing device |
| WO2023058568A1 (en) * | 2021-10-05 | 2023-04-13 | 株式会社デンソー | Torque detection device |
| JP7420127B2 (en) | 2021-10-05 | 2024-01-23 | 株式会社デンソー | Torque detection device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160809 Address after: 430200 Industrial Zone, two industrial zone, Jiangxia District, Hubei, Wuhan Patentee after: WUHAN CHUGUANJIE AUTOMOTIVE TECHNOLOGY CO.,LTD. Address before: East Lake high tech Development Zone, Wuhan City, Hubei Province Road 430073 No. 1 Optics Valley Software Park D8 66, the first floor of the building Patentee before: Uniuersal Sensors, Inc. |
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| CX01 | Expiry of patent term |
Granted publication date: 20131204 |
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| CX01 | Expiry of patent term |