CN101339199A - Electromagnetic type automobile wheel speed sensor and its mounting method - Google Patents
Electromagnetic type automobile wheel speed sensor and its mounting method Download PDFInfo
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- CN101339199A CN101339199A CNA2008100215648A CN200810021564A CN101339199A CN 101339199 A CN101339199 A CN 101339199A CN A2008100215648 A CNA2008100215648 A CN A2008100215648A CN 200810021564 A CN200810021564 A CN 200810021564A CN 101339199 A CN101339199 A CN 101339199A
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- wheel speed
- speed sensor
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- automobile wheel
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Abstract
The invention discloses an electromagnetic automobile wheel speed sensor and an installation method thereof. The wheel speed sensor comprises an electrode pin, a loop skeleton, a magnet, a magnetic pole, a loop, a filling layer and a fixed lug. The fixed lug and the filling layer are connected into a whole. The fixed lug is opened with a fixed hole. The filling layer extends out from the lower end face of the magnet pole. As a gear ring is fixed on an automobile hub, the electromagnetic automobile wheel speed sensor is fixed on an automobile bridge through the fixed lug; the magnet pole is arranged correspondingly to the gear ring; no matter how strong shock happens in the process of the automobile travel, the yoke distance between the magnet pole and the gear ring keeps unchanged, which increases the stability of working performance. On the other hand, as the lower end of the magnet pole is exposed, magnetic loss is reduced and the flux between the magnetic pole and the gear ring is increased, thus improving the measuring accuracy of the automobile wheel speed sensor.
Description
Technical field:
The present invention relates to a kind of automobile wheel speed sensor, relate in particular to electromagnetic type automobile wheel speed sensor and installation method thereof.
Background technology:
Anti-lock braking system in automobiles is commonly called as ABS, is the important leverage system of vehicle safety travel, and its major function is to prevent wheel lock up when automobile emergency is braked.Automobile wheel speed sensor is a sensitive element crucial in the automobile ABS, and its performance is determining the quality of ABS.Electromagnetic type automobile wheel speed sensor is a kind of wheel speed sensors that generally uses at present, and it has simple in structure, low cost and other advantages.This electromagnetic wheel speed is by shielding case 1, electrode pin 2, coil rack 3, magnetic patch 4, magnetic pole 5, coil 6, packed layer 7 and output lead 8 are formed, electrode pin 2 is fixed on the coil rack 3, in the endoporus of coil rack 3, be placed with magnetic patch 4 and magnetic pole 5 successively, coil 6 is wound on the coil rack 3, at electrode pin 2, coil rack 3, magnetic patch 4, magnetic pole 5, the outside surface of the conjunction of coil 6 is provided with packed layer 7, shielding case 1 is sleeved on outside the packed layer 7, electromagnetic type automobile wheel speed sensor is sleeved in the elastic collar 9 of opening, gear ring 10 is fixed on the automotive hub, 5 pairs of magnetic poles are lived gear ring 10, and have a determining deviation between the two.
There is the defective of following two aspects in this class electromagnetic wheel speed in actual use:
First, because automobile wheel speed sensor is fixing by elastic collar, can produce sharp pounding in the vehicle traveling process, can produce relative between automobile wheel speed sensor and the elastic collar from moving, thereby make magnetic core and the yoke distance between the gear ring in the automobile wheel speed sensor produce fluctuation, cause unstable properties.
The second, because a shielding case 1 is inserted in the outside of sensor packed layer 7, there is magnetic loss in the course of the work, magnetic flux reduces, and makes that the measuring accuracy of automobile wheel speed sensor is not high.
Summary of the invention:
Goal of the invention of the present invention is to provide a kind of electromagnetic type automobile wheel speed sensor and installation method thereof, and it can effectively overcome the above-mentioned deficiency that existing automobile wheel speed sensor exposes in actual use.
Electromagnetic type automobile wheel speed sensor of the present invention, comprise electrode pin 2, coil rack 3, magnetic patch 4, magnetic pole 5, coil 6, packed layer 7, electrode pin 2 is fixed on the coil rack 3, in the endoporus of coil rack 3, be placed with magnetic patch 4 and magnetic pole 5 from top to bottom successively, coil 6 is wound on the coil rack 3, electrode pin 2, coil rack 3, magnetic patch 4, magnetic pole 5, coil 6 is coated in the packed layer 7, it is characterized in that: also comprise fixed ear base 71, fixed ear base 71 is connected as a single entity with packed layer 7, have fixed orifice 72 on fixed ear base 71, packed layer 7 is stretched out in the lower surface of described magnetic pole 5.
As to optimization of the present invention, outside packed layer 7, be set with shielding case 1.
The installation method of described electromagnetic type automobile wheel speed sensor: gear ring 10 is fixed on the automotive hub, electromagnetic type automobile wheel speed sensor is fixed on the automobile crane span structure by fixed ear base 71,5 pairs of magnetic poles are lived gear ring 10, and guarantee that gap between the two reaches predetermined optimal spacing.
The advantage of electromagnetic type automobile wheel speed sensor of the present invention shows following two aspects:
On the one hand, owing on automobile wheel speed sensor, set up fixed ear base, moving axially of restricting vehicle wheel speed sensors, guaranteed the best clearance between magnetic pole and gear ring, no matter produce how strong vibrations in the vehicle traveling process, magnetic pole and the yoke distance between the gear ring in the automobile wheel speed sensor are constant all the time, and the stability of work is improved.
On the other hand,, reduced magnetic loss, increased the magnetic flux between magnetic pole and gear ring, thereby improved the measuring accuracy of automobile wheel speed sensor because the lower end of magnetic pole is exposed.
Description of drawings:
Fig. 1 is the structure and the scheme of installation of existing electromagnetic type automobile sensor;
Fig. 2 is the structure and the scheme of installation of electromagnetic type automobile wheel speed sensor of the present invention.
Among the figure: the 1-shielding case; The 2-electrode pin; The 3-coil rack; The 4-magnetic patch; The 5-magnetic pole; The 6-coil; The 7-packed layer; The 71-fixed ear base; The 72-fixed orifice; The 8-output lead; The 9-elastic collar; The 10-gear ring.
Embodiment:
Describe the specific embodiment of the present invention in detail below in conjunction with accompanying drawing:
Described electromagnetic type automobile wheel speed sensor as shown in Figure 2, it comprises electrode pin 2, coil rack 3, magnetic patch 4, magnetic pole 5, coil 6, packed layer 7 and output lead 8, electrode pin 2 is fixed on the coil rack 3, in the endoporus of coil rack 3, be placed with magnetic patch 4 and magnetic pole 5 from top to bottom successively, coil 6 is wound on the coil rack 3, electrode pin 2, coil rack 3, magnetic patch 4, magnetic pole 5, coil 6 are coated in the packed layer 7, on packed layer 7, be provided with fixed ear base 71, have fixed orifice 72 on fixed ear base 71, packed layer 7 is stretched out in the lower surface of described magnetic pole 5.
Certainly, outside packed layer 7, behind the suit shielding case 1, make automobile wheel speed sensor possess diamagnetic interference function.
The installation method of electromagnetic type automobile wheel speed sensor: gear ring 10 is fixed on the automotive hub, and electromagnetic type automobile wheel speed sensor is fixed on the automobile crane span structure, makes 5 pairs of magnetic poles live gear ring 10, and guarantees that gap between the two reaches predetermined optimal spacing.
Its principle of work is: because electromagnetic type automobile wheel speed sensor is fixed on the automobile crane span structure by fixed ear base 71, gear ring 10 is fixed on the wheel, when gear ring 10 during with wheel, the tooth top of gear ring 10, tooth root just change apart from the distance of magnetic pole 5 bottom faces, magnetic field intensity therebetween will change thereupon, thereby produces corresponding induction electromotive force on coil 6.The magnetic intensity of magnetic pole 5 wherein, distance directly influences magnetic flux between magnetic pole 5 and the gear ring 10.The present invention exposes the bottom of magnetic pole 5, has reduced magnetic loss, has strengthened the intensity of magnetic pole 5 relatively; Fixed ear base 71 can be guaranteed to be in best clearance all the time between the bottom of magnetic pole 5 and the gear ring 10.This just provides a stable magnetic field environment for the automobile wheel speed sensor acquired signal, thereby improves the sensitivity and the stability of sensor.
Claims (3)
1, a kind of electromagnetic type automobile wheel speed sensor, comprise electrode pin (2), coil rack (3), magnetic patch (4), magnetic pole (5), coil (6), packed layer (7) and output lead (8), electrode pin (2) is fixed on the coil rack (3), in the endoporus of coil rack (3), be placed with magnetic patch (4) and magnetic pole (5) successively, coil (6) is wound on the coil rack (3), electrode pin (2), coil rack (3), magnetic patch (4), magnetic pole (5), coil (6) is coated in the packed layer (7), it is characterized in that: also comprise fixed ear base (71), fixed ear base (71) is connected as a single entity with packed layer (7), have fixed orifice (72) on fixed ear base (71), packed layer (7) is stretched out in the lower surface of described magnetic pole (5).
2, according to the described electromagnetic type automobile wheel speed sensor of claim 1, it is characterized in that: outside packed layer (7), be set with shielding case (1).
3, the installation method of the described electromagnetic type automobile wheel speed sensor of claim 1 is: gear ring (10) is fixed on the automotive hub, electromagnetic type automobile wheel speed sensor is fixed on the automobile crane span structure by fixed ear base (71), make magnetic pole (5) to living gear ring (10), the gap of regulating between magnetic pole (5) and gear ring (10) reaches predetermined spacing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100215648A CN101339199A (en) | 2008-08-01 | 2008-08-01 | Electromagnetic type automobile wheel speed sensor and its mounting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100215648A CN101339199A (en) | 2008-08-01 | 2008-08-01 | Electromagnetic type automobile wheel speed sensor and its mounting method |
Publications (1)
| Publication Number | Publication Date |
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| CN101339199A true CN101339199A (en) | 2009-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CNA2008100215648A Pending CN101339199A (en) | 2008-08-01 | 2008-08-01 | Electromagnetic type automobile wheel speed sensor and its mounting method |
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| CN (1) | CN101339199A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435764A (en) * | 2011-09-27 | 2012-05-02 | 江苏金榆科技集团有限公司 | Full-shielding automobile wheel speed sensor and installation structure thereof |
| CN105158498A (en) * | 2015-09-29 | 2015-12-16 | 哈尔滨东安发动机（集团）有限公司 | Aviation rotating speed sensor |
| CN105667488A (en) * | 2016-04-06 | 2016-06-15 | 安徽机电职业技术学院 | Auxiliary installation device of automobile wheel speed sensor |
| CN107238728A (en) * | 2017-05-25 | 2017-10-10 | 深圳市深双保电器有限公司 | The adjustable magnetoelectric induction velocity sensor of peak value |
| CN108535506A (en) * | 2018-04-01 | 2018-09-14 | 宁波依诺汽车电子有限公司 | A kind of shielding construction of the magnetoelectric wheel speed sensor of car |
| CN108535508A (en) * | 2018-04-01 | 2018-09-14 | 宁波依诺汽车电子有限公司 | A kind of Full-shielding automobile wheel speed sensor |
| CN110763863A (en) * | 2019-11-19 | 2020-02-07 | 中国航空工业集团公司上海航空测控技术研究所 | Magnetoelectric rotating speed measuring device |
-
2008
- 2008-08-01 CN CNA2008100215648A patent/CN101339199A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435764A (en) * | 2011-09-27 | 2012-05-02 | 江苏金榆科技集团有限公司 | Full-shielding automobile wheel speed sensor and installation structure thereof |
| CN105158498A (en) * | 2015-09-29 | 2015-12-16 | 哈尔滨东安发动机（集团）有限公司 | Aviation rotating speed sensor |
| CN105667488A (en) * | 2016-04-06 | 2016-06-15 | 安徽机电职业技术学院 | Auxiliary installation device of automobile wheel speed sensor |
| CN105667488B (en) * | 2016-04-06 | 2018-09-21 | 安徽机电职业技术学院 | A kind of automobile wheel speed sensor auxiliary installation device |
| CN107238728A (en) * | 2017-05-25 | 2017-10-10 | 深圳市深双保电器有限公司 | The adjustable magnetoelectric induction velocity sensor of peak value |
| CN108535506A (en) * | 2018-04-01 | 2018-09-14 | 宁波依诺汽车电子有限公司 | A kind of shielding construction of the magnetoelectric wheel speed sensor of car |
| CN108535508A (en) * | 2018-04-01 | 2018-09-14 | 宁波依诺汽车电子有限公司 | A kind of Full-shielding automobile wheel speed sensor |
| CN110763863A (en) * | 2019-11-19 | 2020-02-07 | 中国航空工业集团公司上海航空测控技术研究所 | Magnetoelectric rotating speed measuring device |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20090107 |