CN201242550Y - Electromagnetical automobile wheel speed sensor - Google Patents
Electromagnetical automobile wheel speed sensor Download PDFInfo
- Publication number
- CN201242550Y CN201242550Y CNU2008200388765U CN200820038876U CN201242550Y CN 201242550 Y CN201242550 Y CN 201242550Y CN U2008200388765 U CNU2008200388765 U CN U2008200388765U CN 200820038876 U CN200820038876 U CN 200820038876U CN 201242550 Y CN201242550 Y CN 201242550Y
- Authority
- CN
- China
- Prior art keywords
- magnetic pole
- wheel speed
- speed sensor
- magnetic
- fixed
- 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.)
- Expired - Fee Related
Links
Landscapes
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
The utility model discloses an electromagnetic automotive wheel speed sensor, which comprises an electrode pin, a coil framework, a magnetic block, a magnetic pole, a packing layer and a fixed lug base; wherein, the fixed lug base is connected with the packing layer into a whole, and fixing holes are arranged on the fixed lug base; the lower end surface of the magnetic pole protrudes out of the packing layer. As a gear ring is fixed on a wheel hub of the automotive, the electromagnetic automotive wheel speed sensor is fixed on an axle of the automotive through the fixed lug base, the magnetic pole is directed to the gear ring; thereby, when the automotive runs, the magnetic distance between the magnetic pole and the gear ring is unchanged all the time, and the stability of the operating performance is improved. On the other hand, the magnetic loss is reduced, and the magnetic flux between the magnetic pole and the gear ring is increased due to the exposed lower end of the magnetic pole, therefore improving the measuring accuracy of the automotive wheel speed sensor.
Description
Technical field:
The utility model relates to a kind of automobile wheel speed sensor, relates in particular to electromagnetic type automobile wheel speed sensor.
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 type automobile wheel speed sensor 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 type automobile wheel speed sensor 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.
The utility model content:
Goal of the invention of the present utility model is to provide a kind of electromagnetic type automobile wheel speed sensor, 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 described in the utility model, 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 utility model, 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 described in the utility model 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 described in the utility model.
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 embodiment of the present utility model 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 utility model 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 (2)
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).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200388765U CN201242550Y (en) | 2008-08-01 | 2008-08-01 | Electromagnetical automobile wheel speed sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200388765U CN201242550Y (en) | 2008-08-01 | 2008-08-01 | Electromagnetical automobile wheel speed sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201242550Y true CN201242550Y (en) | 2009-05-20 |
Family
ID=40715840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200388765U Expired - Fee Related CN201242550Y (en) | 2008-08-01 | 2008-08-01 | Electromagnetical automobile wheel speed sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201242550Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102854333A (en) * | 2012-09-18 | 2013-01-02 | 哈尔滨工程大学 | Hot-redundant magnetic-electric rotational-speed sensor |
| CN104999248A (en) * | 2015-08-10 | 2015-10-28 | 成都亨通兆业精密机械有限公司 | Method for rapid passing of wires outside sensor |
| CN105006359A (en) * | 2015-08-10 | 2015-10-28 | 成都亨通兆业精密机械有限公司 | Method for batch hole penetration of wires outside sensor |
| CN107013740A (en) * | 2017-05-11 | 2017-08-04 | 闫化存 | A kind of magnetoresistive sensor |
| CN108089025A (en) * | 2016-11-21 | 2018-05-29 | 中国科学院宁波材料技术与工程研究所 | A kind of magnetoelectric tachometric transducer based on non-crystaline amorphous metal or nanometer crystal alloy |
-
2008
- 2008-08-01 CN CNU2008200388765U patent/CN201242550Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102854333A (en) * | 2012-09-18 | 2013-01-02 | 哈尔滨工程大学 | Hot-redundant magnetic-electric rotational-speed sensor |
| CN104999248A (en) * | 2015-08-10 | 2015-10-28 | 成都亨通兆业精密机械有限公司 | Method for rapid passing of wires outside sensor |
| CN105006359A (en) * | 2015-08-10 | 2015-10-28 | 成都亨通兆业精密机械有限公司 | Method for batch hole penetration of wires outside sensor |
| CN108089025A (en) * | 2016-11-21 | 2018-05-29 | 中国科学院宁波材料技术与工程研究所 | A kind of magnetoelectric tachometric transducer based on non-crystaline amorphous metal or nanometer crystal alloy |
| CN107013740A (en) * | 2017-05-11 | 2017-08-04 | 闫化存 | A kind of magnetoresistive sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101339199A (en) | Electromagnetic type automobile wheel speed sensor and its mounting method | |
| CN201242550Y (en) | Electromagnetical automobile wheel speed sensor | |
| CN103947103B (en) | The control device of motor | |
| US9827958B2 (en) | Sensor device for measuring the rotational speed at a wheel of a vehicle, brake system and vehicle therewith and measuring method which can be carried out therewith for measuring the rotational speed, and braking method | |
| CN102645547B (en) | Speed sensor and speed-measuring system of traction motor rotor | |
| JPH07191049A (en) | Wheel speed sensor of vehicle | |
| CN205027774U (en) | Wheel speed measuring device based on vehicle semi -axis | |
| EP3407072A1 (en) | Wheel speed sensor | |
| CN202171596U (en) | Full shielding automobile wheel speed sensor and installation structure thereof | |
| CN102435764A (en) | Full-shielding automobile wheel speed sensor and installation structure thereof | |
| CN207964860U (en) | The shielding construction of the magnetoelectric wheel speed sensor of car | |
| CN202661476U (en) | Velocity sensor and traction motor rotor velocity measuring system | |
| KR20160003491U (en) | Wheel speed sensor device, sensor unit thereof, and vehicle using the wheel speed sensor device | |
| CN211426532U (en) | Speed measuring device and traffic vehicle | |
| CA3112067C (en) | Wheel speed sensor assembly with stepped alignment key | |
| CN203870123U (en) | Magnetic rotating speed sensor self-checking device and system | |
| CN202093038U (en) | Novel automobile speed sensor | |
| CN201100863Y (en) | EOBD rotation speed sensor | |
| CN103604941B (en) | A kind of wheel of vehicle device for testing rotating speed | |
| CN202648609U (en) | Automobile crankshaft position sensor | |
| CN203535064U (en) | Pickup abs wheel speed sensor | |
| CN212872515U (en) | Wheel speed sensor probe | |
| CN201964992U (en) | ABS (antilock brake system) pressure sensor | |
| CN208360157U (en) | Gas braking casting bottom plate fixes bracket with abs sensor | |
| CN217753648U (en) | Wheel speed reading assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090520 Termination date: 20100801 |