CN102645153A - Vehicle chassis height sensor - Google Patents
Vehicle chassis height sensor Download PDFInfo
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- CN102645153A CN102645153A CN2012101374008A CN201210137400A CN102645153A CN 102645153 A CN102645153 A CN 102645153A CN 2012101374008 A CN2012101374008 A CN 2012101374008A CN 201210137400 A CN201210137400 A CN 201210137400A CN 102645153 A CN102645153 A CN 102645153A
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- vehicle chassis
- swing arm
- chassis height
- height sensor
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Abstract
A vehicle chassis height sensor relates to a vehicle chassis height detecting device which is characterized by utilizing an electric or magnetic method, and particularly relates to a hall type vehicle chassis height sensor used for vehicle light control. The vehicle chassis height sensor comprises a shell, a rotation unit, a swing arm unit and a hall sensing unit, wherein the rotation unit includes a rotary shaft and a magnetic steel, a first cavity and a second cavity are arranged on the lower portion of the shell, the magnetic steel is placed in the first cavity, a hall chip is flatly posted on a circuit board, close to and aligned to the magnetic steel, the circuit board is fixed in the second cavity through sealing fillers, and the swing arm unit is in an integrated structure by an entire injection molding. A stator portion is omitted, under the condition that the detecting function and accuracy of the sensor are maintained, the manufacturing cost of the sensor is reduced, by means of a swing arm ball stud structure which utilizes curable fillers to perform a sealing perfusion and an entire injection molding, disturbances of an application environment can be reduced, and influences of assembly errors to the accuracy can be reduced, so that the assembly process of the sensor is simple and rapid.
Description
Technical field
The present invention relates to a kind ofly, relate in particular to a kind of Hall-type vehicle chassis height sensor that is used for car bulb control to adopt the vehicle chassis height detection equipment that by electric or magnetic means is a characteristic.
Background technology
Automobile sensor is the critical component of Auto Electronic Controlled System; It also is the core content of technical field of automotive electronics research; Car lamp control system need in time be controlled vehicle dipped headlights height according to bodywork height and pavement behavior; To prevent that the dazzle that vehicle light produces from influencing driving safety, therefore needs height sensor to detect the vehicle chassis height in real time.At present, hall sensor has obtained using widely in field of electric control with advantages such as its precision are high, volume is little.Wherein, it is the magnetic field angle variation of sensor that the Hall-type height sensor mainly adopts the bodywork height change transitions, changes with Hall chip pick-up transducers magnetic field angle, is converted into the main mode of voltage or pwm signal output.(utility model patent number: ZL200820158067.8 Granted publication number: CN201335676Y), disclose a kind of height sensor, this sensor is installed on automobile chassis to China's utility model patent " a kind of bodywork height detect use sensor "; When bodywork height changes,, drive sensor rotating shaft rotation through link rod; Thereby change magnetic field intensity; Through the variation of hall sensing magnetic field intensity, last output voltage signal comes the horizontal light modulation of Control of Automobile headlight, prevents the dazzle to the opposite vehicle; Significantly improve driving safety, be applied in simultaneously and can improve the comfortableness that vehicle is driven on the self-adaptation chassis system.Hall chip in the height sensor is responded to small angle through a rotating seal physical construction and is changed.This sensor comprises stationary part, housing parts and swing arm unit; Wherein, Stationary part comprises a stator seat, and injection moulding has fixedly mounted the magnetic conductor of two arcuations and symmetric offset spread in this stator seat, and wiring board is installed in the stator seat bottom through the pilot hole that is provided with on the stator seat; This wiring board is provided with a linear Hall chip; This chip is positioned at the centre of the magnetic conductor of two arcuations and symmetric offset spread, and the effect of this magnetic conductor is that the magnetic field that two-stage is distributed is even, has improved magnetic field intensity.
But, in this technical scheme, need comprise the stationary part of the magnetic conductor of two arcuation symmetric offset spread, these two magnetic conductors are wanted and can two-stage magnetic field evenly be distributed, and enough magnetic field intensitys will be arranged.And the linear Hall chip must be arranged on the centre of uniform magnetic field, and the matching requirements of the Hall-type height sensor of this kind structure are high, and the magnetic field intensity of magnetic conductor and material requirements than higher, are needed higher cost.In addition, the component part of this sensor is more, and the technological process complicacy causes efficiency of assembling lower.
Summary of the invention
The objective of the invention is to provide a kind of novel Hall-type height sensor, can solve high, the high technical matters of matching requirements of Hall-type height sensor in the prior art the material requirements of magnetic conductor.And reduced amount of parts and technological process, also made the sensor assembly technology more simple and efficient when having reduced cost.
The present invention solves the problems of the technologies described above the technical scheme that is adopted:
A kind of vehicle chassis height sensor; Comprise housing, rotating unit, swing arm unit and hall sensor unit; Described housing is the integral molded plastic moulding; The embedding bearing of injection moulding, one group of contact pin and two embedded nuts in the housing, described vehicle chassis height sensor is fixedly attached on the car body of vehicle through two embedded nuts, it is characterized in that:
Described rotating unit comprises rotating shaft and magnet steel, and the upper end of said rotating shaft is connected to through the swing arm unit on the chassis of vehicle, and described magnet steel is fixedly connected on the lower end of rotating shaft, and described bearing is passed in described rotating shaft, is pivotally connected on the housing;
Described lower part of frame is provided with first cavity and second cavity, and described magnet steel places in said first cavity, and described hall sensor unit is fixed in described second cavity;
Described hall sensor unit comprises a Hall chip and a wiring board, and described Hall chip is flattened on the described wiring board, the top of Hall chip near and align described magnet steel;
Described one group of contact pin is welded on the wiring board, and the power input of Hall chip and signal output part via described one group of contact pin, connect the lamp light control system of vehicle through wiring board.
A kind of preferable technical scheme of vehicle chassis height sensor of the present invention; It is characterized in that described swing arm unit comprises swing arm, lining and bulb; Integral molded plastic is shaped to integrative-structure, the embedding lining of an end injection moulding of swing arm, and the other end is the bulb of one injection structure; Said swing arm is fixedly attached to the upper end of said rotating shaft through lining, and is connected on the chassis of vehicle through bulb.
A kind of better technical scheme of vehicle chassis height sensor of the present invention; It is characterized in that described housing adopts the encapsulation type hermetically-sealed construction; Comprise curable sealing filler in described second cavity, described wiring board is fixed in second cavity through described sealing filler.
A kind of improved technical scheme of vehicle chassis height sensor of the present invention is characterized in that described enclosure interior is provided with dividing plate, and described dividing plate is fixed between first cavity and second cavity.
A kind of further improved technical scheme of vehicle chassis height sensor of the present invention; It is characterized in that described Hall chip is three rps integrated circuit able to programme; Described Hall chip is welded on the described wiring board; Wiring board is located by connecting on through reference column in second cavity of housing, and the central point of Hall chip sensitizing range aligns the axis of rotation of said magnet steel.
The invention has the beneficial effects as follows:
1, compares with sensor with the bodywork height detection of prior art; Vehicle chassis height sensor of the present invention is under the situation that keeps sensor function and accuracy of detection; Omitted this fundamental of stationary part; Reduced the sensor manufacturing process flow process greatly, make the sensor assembly technology simple more, quick, and cost has been lower.
2, adopt curable filling material sealing perfusion; Can play the effect of sealed damp-proof better; Can make sensor obtain better dielectric properties, can adapt to the rugged surroundings of vehicle operating better, improve the reliability of vehicle chassis height sensor of the present invention.
3, vehicle chassis height sensor of the present invention adopts the swing arm ball head structure of integral molded plastic to substitute existing sensing device ball stud syndeton; Not only parts manufacturing and assembly cost can have been saved; Can also avoid detecting error or inefficacy, thereby improve the accuracy of detection and the reliability of sensor because of loosening the causing that be threaded.
Description of drawings
Fig. 1 is the structural representation of vehicle chassis height sensor of the present invention;
Fig. 2 is the vertical view of vehicle chassis height sensor of the present invention;
Fig. 3 is the stereoscopic figure of vehicle chassis height sensor of the present invention;
Fig. 4 is the assembly relation synoptic diagram of vehicle chassis height sensor of the present invention;
Fig. 5 is the housing of vehicle chassis height sensor of the present invention and the upward view of hall sensor unit;
Fig. 6 is the structural representation of the swing arm unit of vehicle chassis height sensor of the present invention;
Fig. 7 is the vertical view of the swing arm unit of vehicle chassis height sensor of the present invention;
Fig. 8 is rotating unit and hall sensor unit configuration relation synoptic diagram;
Fig. 9 is rotating unit and hall sensor unit configuration relation vertical view.
Figure 10 is the user mode reference diagram of vehicle chassis height sensor of the present invention;
The label of each parts in more than scheming: 1-housing, 10-first cavity, 11-second cavity, 13-contact pin, 14-oil sealing; The 15-bearing, 16-embedded nut, 17-dividing plate, 18-reference column, 2-swing arm unit; The 21-swing arm, 22-lining, 23-bulb, 3-rotating unit, 31-rotating shaft; The 32-magnet steel, 4-hall sensor unit, 41-Hall chip, 42-wiring board.
Embodiment
In order to understand technique scheme of the present invention better, describe in detail further below in conjunction with accompanying drawing and embodiment.
The structure of vehicle chassis height sensor of the present invention is as shown in Figure 1; Comprise housing 1, swing arm unit 2, rotating unit 3 and hall sensor unit 4; Described housing 1 is the integral molded plastic moulding; The embedding bearing of injection moulding 15, one group of contact pin 13 and two embedded nuts 16 in the housing 1, the vehicle chassis height sensor is fixedly attached on the car body of vehicle through two embedded nuts 16.Rotating unit 3 comprises rotating shaft 31 and magnet steel 32, and the upper end of rotating shaft 31 is connected to through swing arm unit 2 on the chassis of vehicle, and magnet steel 32 is fixedly connected on the lower end of rotating shaft 31, and bearing 15 is passed in rotating shaft 31, is pivotally connected on the housing 1.The bottom of housing 1 is provided with first cavity 10 and second cavity 11, and magnet steel 32 places in first cavity 10, rotates in first cavity 10 with rotating shaft 31.Hall sensor unit 4 is fixed in second cavity 11, and hall sensor unit 4 comprises a Hall chip 41 and a wiring board 42, and Hall chip 41 is flattened on the wiring board 42, the top of Hall chip 41 near and align magnet steel 31, referring to Fig. 8 and Fig. 9.The magnetic line of force of magnet steel 32 passes Hall chip 41; Under the drive of the swing arm unit 2 that is connected with vehicle chassis; Magnet steel is with rotating shaft 31 rotations; The magnetic field of passing Hall chip 41 changes, and Hall chip 41 can utilize hall principle to detect the corner of rotating shaft 31 and swing arm 21 exactly, and then detects the variation of vehicle chassis height.Be embedded in one group of contact pin 13 on the housing 1, be welded to wiring board 42, the power input of Hall chip 41 and signal output part via one group of contact pin 13, connect the lamp light control system of vehicle through wiring board 42.
In the embodiment of the swing arm unit 2 of Fig. 6 and vehicle chassis height sensor of the present invention shown in Figure 7; Swing arm unit 2 comprises swing arm, lining and bulb; Integral molded plastic is shaped to integrative-structure, the embedding lining 22 of an end injection moulding of swing arm 21, and the other end is the bulb 23 of one injection structure; Swing arm 21 is fixedly attached to the upper end of rotating shaft 31 through lining 22, and bulb 23 is pivotally connected to through a connecting link on the chassis of vehicle (referring to Figure 10).Vehicle chassis height sensor of the present invention adopts the swing arm ball head structure of injection moulding; Abandoned the structure that the employed hold-down nut of existing sensing device connects the stainless steel ball hook bolt; Not only parts manufacturing and assembly cost can have been saved; Can also avoid detecting error or inefficacy, improve the accuracy of detection and the reliability of sensor because of attaching nut's bolt looseness causes.
A kind of better implement scheme of vehicle according to the invention chassis height sensor, housing 1 adopts the encapsulation type hermetically-sealed construction, comprises curable sealing filler in second cavity 11, for example, two component polyurethane.Wiring board 42 is fixed in second cavity 11 through sealing filler, has omitted the lower cover of existing sensing device.Adopt the two component polyurethane sealing perfusion, can play the effect of sealed damp-proof better, can make sensor obtain better dielectric properties, can adapt to the rugged surroundings of vehicle operating better, improve the reliability of vehicle chassis height sensor of the present invention.
In the embodiment of Fig. 1 and vehicle chassis height sensor of the present invention shown in Figure 8, housing 1 inside is provided with dividing plate 17, and dividing plate 17 is fixed between first cavity 10 and second cavity 11.As shown in Figure 1, in second cavity of housing, be provided with caulking groove, dividing plate 17 is buckled on the caulking groove, keeps apart first cavity 10 and second cavity 11, cooperates the oil sealing 14 of rotating shaft 31 and rotating shaft upper end, makes first cavity become independently enclosed cavity.When in second cavity 11, pouring into curable sealing filler, dividing plate 17 can also prevent that the filling material of paying close attention to from flowing into first cavity 10 before solidifying, and influences the rotation of magnet steel 31.
In the embodiment of vehicle chassis height sensor of the present invention; Hall chip 41 adopts three rps integrated circuit MLX90316 able to programme of Melexis; The inner integrated field concentrator (IMC) of MLX90316 can realize 360 ° of rpss of high precision; Its output signal spacing can define voluntarily; The two-period form or the three-segment type interval of optional position in 360 ° of scopes able to programme can provide aanalogvoltage programming and PWM programming multiple choices mode simultaneously, have greatly enriched the product line type of sensor.Hall chip 41 is welded on the printed-wiring board (PWB) 42, and wiring board 42 wiring boards are located by connecting in second cavity of housing 1 through reference column 18, and the sensitizing range central point of Hall chip 41 aligns the axis of rotation of magnet steel 32, referring to Fig. 8.
Vehicle chassis height sensor of the present invention has omitted original stationary part, comprises the magnetic conductor of stator seat, two arcuation symmetric offset spread, has omitted the stator seat Shooting Technique, and Hall chip and stator seat assembly technology and pcb board bonding process.Though vehicle chassis height sensor of the present invention has omitted this fundamental of stationary part, has still kept original test function and technical performance index.According to test result, the actual measurement linear precision of vehicle chassis height sensor of the present invention is ± 1%, reaches identical precision with the sensor that had stationary part originally; Yet; Because the present invention has adopted the swing arm ball head structure of curable filling material sealing perfusion and integral molded plastic; Can reduce the interference of applied environment; Reduce the influence of rigging error to precision, make vehicle chassis height sensor of the present invention at the scene the linear precision in the applied environment be superior to prior art.
Those of ordinary skill in the art will be appreciated that; Above embodiment is used for explaining technical scheme of the present invention; And be not to be used as qualification of the present invention; Any based on connotation of the present invention to variation, modification that the above embodiment did, all will drop in the protection domain of claim of the present invention.
Claims (5)
1. vehicle chassis height sensor; Comprise housing, rotating unit, swing arm unit and hall sensor unit; Described housing is the integral molded plastic moulding; The embedding bearing of injection moulding, one group of contact pin and two embedded nuts in the housing, described vehicle chassis height sensor is fixedly attached on the car body of vehicle through two embedded nuts, it is characterized in that:
Described rotating unit comprises rotating shaft and magnet steel, and the upper end of said rotating shaft is connected to through the swing arm unit on the chassis of vehicle, and described magnet steel is fixedly connected on the lower end of rotating shaft, and described bearing is passed in described rotating shaft, is pivotally connected on the housing;
Described lower part of frame is provided with first cavity and second cavity, and described magnet steel places in said first cavity, and described hall sensor unit is fixed in described second cavity;
Described hall sensor unit comprises a Hall chip and a wiring board, and described Hall chip is flattened on the described wiring board, the top of Hall chip near and align described magnet steel;
Described one group of contact pin is welded on the wiring board, and the power input of Hall chip and signal output part via described one group of contact pin, connect the lamp light control system of vehicle through wiring board.
2. vehicle chassis height sensor according to claim 1; It is characterized in that described swing arm unit comprises swing arm, lining and bulb; Integral molded plastic is shaped to integrative-structure, the embedding lining of an end injection moulding of swing arm, and the other end is the bulb of one injection structure; Said swing arm is fixedly attached to the upper end of said rotating shaft through lining, and is connected on the chassis of vehicle through bulb.
3. vehicle chassis height sensor according to claim 1; It is characterized in that described housing adopts the encapsulation type hermetically-sealed construction; Comprise curable sealing filler in described second cavity, described wiring board is fixed in second cavity through described sealing filler.
4. vehicle chassis height sensor according to claim 1 is characterized in that described enclosure interior is provided with dividing plate, and described dividing plate is fixed between first cavity and second cavity.
5. according to the described vehicle chassis height sensor of arbitrary claim in the claim 1 to 4; It is characterized in that described Hall chip is three rps integrated circuit able to programme; Described Hall chip is welded on the described wiring board; Wiring board is located by connecting on through reference column in second cavity of housing, and the central point of Hall chip sensitizing range aligns the axis of rotation of said magnet steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101374008A CN102645153A (en) | 2012-05-03 | 2012-05-03 | Vehicle chassis height sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101374008A CN102645153A (en) | 2012-05-03 | 2012-05-03 | Vehicle chassis height sensor |
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| CN102645153A true CN102645153A (en) | 2012-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012101374008A Pending CN102645153A (en) | 2012-05-03 | 2012-05-03 | Vehicle chassis height sensor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104457651A (en) * | 2013-09-22 | 2015-03-25 | 上海信耀电子有限公司 | Detection device and detection method of automobile height sensor |
| CN104748659A (en) * | 2015-04-07 | 2015-07-01 | 上海信耀电子有限公司 | Vehicle body height sensor |
| CN109883311A (en) * | 2019-03-11 | 2019-06-14 | 浙江可得电子科技有限公司 | A kind of level sensor |
| CN114475416A (en) * | 2022-03-05 | 2022-05-13 | 京瓷安施电子元件(苏州)有限公司 | Automobile chassis vibration damping suspension sensor and manufacturing process thereof |
| CN115218772A (en) * | 2022-07-11 | 2022-10-21 | 索密克汽车配件有限公司 | Real-time in-transit detection system for height of ball head and automobile chassis |
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| CN1684847A (en) * | 2002-09-25 | 2005-10-19 | 康斯贝格汽车公司 | System for sensing level change in vehicles |
| JP2005300247A (en) * | 2004-04-08 | 2005-10-27 | Komatsu Ltd | Displacement sensor |
| CN201335676Y (en) * | 2008-12-29 | 2009-10-28 | 上海小糸车灯有限公司 | Sensor used for detecting vehicle body height |
| CN201771593U (en) * | 2010-08-02 | 2011-03-23 | 力帆实业(集团)股份有限公司 | Thermostat seat |
| CN202582475U (en) * | 2012-05-03 | 2012-12-05 | 上海小糸车灯有限公司 | Vehicle chassis height sensor |
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2012
- 2012-05-03 CN CN2012101374008A patent/CN102645153A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1684847A (en) * | 2002-09-25 | 2005-10-19 | 康斯贝格汽车公司 | System for sensing level change in vehicles |
| JP2005300247A (en) * | 2004-04-08 | 2005-10-27 | Komatsu Ltd | Displacement sensor |
| CN201335676Y (en) * | 2008-12-29 | 2009-10-28 | 上海小糸车灯有限公司 | Sensor used for detecting vehicle body height |
| CN201771593U (en) * | 2010-08-02 | 2011-03-23 | 力帆实业(集团)股份有限公司 | Thermostat seat |
| CN202582475U (en) * | 2012-05-03 | 2012-12-05 | 上海小糸车灯有限公司 | Vehicle chassis height sensor |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104457651A (en) * | 2013-09-22 | 2015-03-25 | 上海信耀电子有限公司 | Detection device and detection method of automobile height sensor |
| CN104457651B (en) * | 2013-09-22 | 2018-01-16 | 上海信耀电子有限公司 | The detection device and detection method of automobile height sensor |
| CN104748659A (en) * | 2015-04-07 | 2015-07-01 | 上海信耀电子有限公司 | Vehicle body height sensor |
| CN109883311A (en) * | 2019-03-11 | 2019-06-14 | 浙江可得电子科技有限公司 | A kind of level sensor |
| CN114475416A (en) * | 2022-03-05 | 2022-05-13 | 京瓷安施电子元件(苏州)有限公司 | Automobile chassis vibration damping suspension sensor and manufacturing process thereof |
| CN115218772A (en) * | 2022-07-11 | 2022-10-21 | 索密克汽车配件有限公司 | Real-time in-transit detection system for height of ball head and automobile chassis |
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Application publication date: 20120822 |