CN208241463U - A kind of high reliability integrated waterproof EPS motor - Google Patents

A kind of high reliability integrated waterproof EPS motor Download PDF

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Publication number
CN208241463U
CN208241463U CN201820936723.6U CN201820936723U CN208241463U CN 208241463 U CN208241463 U CN 208241463U CN 201820936723 U CN201820936723 U CN 201820936723U CN 208241463 U CN208241463 U CN 208241463U
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China
Prior art keywords
casing
waterproof
control panel
high reliability
ecu control
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CN201820936723.6U
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Chinese (zh)
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陈云华
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Longzhong Motor Technology (kunshan) Co Ltd
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Longzhong Motor Technology (kunshan) Co Ltd
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Abstract

The utility model discloses a kind of high reliability integrated waterproof EPS motors, including casing, motor body and ECU control panel, end cap is fixed in casing front end, motor body is set in casing, motor body includes stator and rotor, stator is fixed in casing, and rotor includes the both ends shaft being mounted on casing and end cap by bearing, the rotor core that is fixed in shaft and several rotor permanent magnet magnetic poles for being evenly distributed on rotor core peripheral surface;It is characterized in that forming cavity outside the rear end of casing, back shroud is fixed on cavity and forms closing chamber, ECU control panel is set in the closing chamber and the connection conductor by penetrating cavity wall is connected with the UVW three-phase windings terminals of stator;The waterproof electrical connector that cavity wall is equipped with waterproof vent valve and is externally electrically connected for ECU control panel.The electric machine structure is compact, can be improved the tolerance under the power density, operational reliability and adverse circumstances of EPS system, and service life is extended.

Description

A kind of high reliability integrated waterproof EPS motor
Technical field
The utility model relates to a kind of high reliability integrated waterproof EPS motors.
Background technique
With the growth requirement that modern tradition automobile, new-energy automobile and Intelligent unattended drive a car, people are to power-assisted Steering system proposes more strict requirements.Electric boosting steering system (EPS) provides corresponding power-assisted by motor, compared to biography For the hydraulic power-assist steering system (HPS) and electric hydraulic power-assisted steering system (EHPS) of system, largely reduces and be The energy consumption of system, has stronger anti-interference, safety and control stability, and motor is good as core component its performance The bad performance for determining entire EPS system.But current EPS motor exposes following structural disadvantages when in use:
ECU control panel and motor are to separate design in traditional EPS system, and mutual line connection shortage can The closing waterproofing design leaned on, therefore when working in there is the environment paddled with dust, when hull outside temperature change dramatically meeting Cause internal pressure to change, cause dew condensation phenomenon and cell breath, enters motor or control panel cavity internal water accumulation or dust, shadow Ring operational reliability even thrashing.
In addition, there is also following defects for EPS motor current in terms of arrangement angles:
1) when EPS motor is assembled, the relative position of stator and rotor d axis is random under normal circumstances, ECU control panel with Every is both needed to determine initial position angle when motor is with examination, increases workload and reduces batch production efficiency, simultaneously because motor It is the initial position angle of one-to-one determination with ECU control panel, interchangeability is poor.
2) ECU control panel is needed due to designing on the outside of motor housing by the inside of position signal connecting line and motor Position-detection sensor connection, system structure is complicated, volume is big, assembly is cumbersome, and reliability reduces.
Therefore, those skilled in the art have compact knot it is urgent to provide a kind of high reliability integrated waterproof EPS motor Structure can improve the whole tolerance in the presence of a harsh environment of power density, operational reliability and motor of EPS system, have High service life.
Summary of the invention
The utility model aim is: providing a kind of high reliability integrated waterproof EPS motor, compact-sized, Neng Gouti The whole tolerance in the presence of a harsh environment of power density, operational reliability and the motor of high EPS system, service life obtain Extend.
The technical solution of the utility model is: a kind of high reliability integrated waterproof EPS motor, including casing, motor sheet Body and ECU control panel, the fixed end cap in casing front end, motor body are set in casing, and motor body includes stator and rotor, and stator is solid It is scheduled in casing, and rotor includes the shaft that both ends are mounted on casing and end cap by bearing, the rotor being fixed in shaft Iron core and several rotor permanent magnet magnetic poles for being evenly distributed on rotor core peripheral surface;It is characterized in that outside the rear end of casing at Type has cavity, and back shroud is fixed on cavity and forms closing chamber, ECU control panel is set in the closing chamber and by penetrating cavity wall Connection conductor is connected with the UVW three-phase windings terminals of stator;Simultaneously cavity wall be equipped with waterproof vent valve and with ECU control panel Be connected the waterproof electrical connector being externally electrically connected for it.
Further, shaft one end described in the utility model passes through casing and protrudes into the closing chamber, fixed in shaft There is the initial position detection magnet for establishing motor initial position angle, and ECU control panel is equipped with and examines with the initial position Magnet cooperation is surveyed to detect the position-detection sensor of motor initial position angle, the rotor permanent magnet magnetic pole and initial position are examined It is constant by synchronizing the initial position angle to magnetize to ensure motor to survey magnet.
It is above-mentioned synchronize magnetize refer in the prior art using respectively with rotor permanent magnet magnetic pole and initial position detection magnet The identical two groups of different magnetizing coils of number of poles, it is constant by the relative position for fixing between two groups of magnetizing coils the angle that magnetizes, And two magnetizing coils circumferentially determine according to certain preset reference position (can be hole or other markers) on rotor core Position, then the technique integrally to be magnetized to rotor permanent magnet magnetic pole and initial position detection magnet simultaneously.It is initial the purpose is to make The pole N or the pole S of position detection magnet are aligned with rotor permanent magnet magnetic pole fixed position point always, to bind the one of established motor A constant initial position angle can be set in this way when being detected using ECU control panel and position-detection sensor by program Determine this initial position angle of memory consolidation, replacement ECU control panel can detect same initial position anyway later Angle substantially increases the interchangeability of system ECU control panel without debugging again.
Further, initial position detection magnet described in the utility model uses the high magnetic characteristics permanent magnetism of diameter of phi 6 Body, the position-detection sensor use reluctive transducer, are spaced the axial magnetic distance of reaction of 1.2mm between the two.Pass through The above-mentioned selection of experimental verification and apart from design can obtain optimal detection sensitivity and detection accuracy.
Further, between back shroud and cavity described in the utility model be equipped with cover plate for sealing circle, and the end cap with End cap seal circle is equipped between casing, to further ensure that the leakproofness at entire casing (comprising cavity) both ends.
Further, end cap described in the utility model is equipped with the axis hole stretched out for shaft, is equipped with and is arranged in the axis hole Oil sealing in shaft.
Further, oil sealing described in the utility model uses the dual lip configuration oil sealing with self-tightening spring, thus into one Step ensures the leakproofness between end cap and shaft.
Further, the UVW three-phase windings terminals of stator described in the utility model are respectively by three copper bars and ECU Control panel welding is connected by electrical connector grafting, and the aperture penetrated for three copper bars is provided on cavity wall.The application of copper bar On the one hand the framework stability of connection line can be improved, on the other hand also can be further improved the water proof and dust proof of connection line Energy.
Further, waterproof vent valve described in the utility model and using screw-type shell and equipped with silicon sealing ring prevent Water ventilated membrane for waterproof and keeps the external and internal pressure of closing chamber and chassis cavity balanced.
Further, ECU control panel described in the utility model and the perpendicular arrangement of the shaft, it is ensured that casing structure Compactedness not will increase additional axial dimension.
The utility model has the advantages that:
1. cavity and cover board is arranged in the casing rear end of motor script to close and accommodate ECU control panel in the utility model, and So that ECU control panel is electrically connected with motor body in casing internal completion, ECU control panel and casing binding are designed from structure Together, compared with prior art, structure is simplified, volume is reduced, so that motor overall structure is more compact.
2. in design and end cap and back shroud of the utility model by waterproof vent valve and waterproof electrical connector Sealing ring design and the dual lip configuration stem seal design between shaft and end cap, have effectively completely cut off water or dust enter casing and rear end It in closing chamber, and keeps casing and closing chamber external and internal pressure balanced, improves running reliability of motor and motor is integrally being disliked Tolerance under bad environment, service life are extended.
3. rotor permanent magnet magnetic pole in the utility model and initial position detection magnet using synchronize magnetize so that initial bit The pole N or the pole S for setting detection magnet are aligned with rotor permanent magnet magnetic pole fixed position point always, to bind one of established motor Constant initial position angle can pass through program setting in this way when detecting using ECU control panel and position-detection sensor This initial position angle of memory consolidation, replacement ECU control panel can detect same initial position angle anyway later Degree, without debugging again, substantially increases the interchangeability of system ECU control panel.
4. motor body and ECU control panel are arranged in the casing after same design in the utility model, reduce EPS system volume improves the power density of EPS system;And since position-detection sensor is set up directly on ECU control On plate, the position signal connecting line in routine techniques is eliminated, configuration structure is simplified, further improves system run all right Property and reliability.Therefore the utility model drives a car especially suitable for modern tradition automobile, new-energy automobile and Intelligent unattended Require the servo steering system of high reliability, high power density and high-protection level.
Detailed description of the invention
The utility model is further described with reference to the accompanying drawings and embodiments:
Fig. 1 is the main structure cross-sectional view of the utility model.
Wherein: 1, ECU control panel;2, waterproof vent valve;3, waterproof electrical connector;4, casing;5, end cap seal circle;6, it holds Lid;7, stator;8, oil sealing;9, shaft;10, rotor core;11, rotor permanent magnet magnetic pole;12, rotor;13, copper bar;14, cover board is close Seal;15, initial position detection magnet;16, position-detection sensor;17, bearing;18, back shroud.
Specific embodiment
Embodiment: as shown in connection with fig. 1 to the one of this high reliability integrated waterproof EPS motor provided by the utility model Kind specific embodiment is described as follows:
The same with routine techniques, constituting has casing 4, motor body and ECU control panel 1, and 4 front end of casing passes through bolt Fixed end cap 6, motor body are set in casing 4.Motor body is external stator inner rotor core in the present embodiment, wherein stator 7 It is fixed on 4 inner wall of casing, and rotor 12 includes both ends by not marking in bearing figure on the right side of bearing 17() it is mounted on 4 He of casing Shaft 9 on end cap 6, the rotor core 10 being fixed in shaft 9 and it is evenly distributed on the several of 10 peripheral surface of rotor core Rotor permanent magnet magnetic pole 11.The core of the utility model, which is improved, to be to form cavity outside the rear end of casing 4, passes through spiral shell on cavity Bolt is fixed with back shroud 18 to forming closing chamber, and ECU control panel 1 is vertically fixed in the closing chamber, and with the shaft 9 Perpendicular arrangement, specifically as shown in Figure 1.Cavity interior walls molding convex ribs fix ECU control panel 1 in the present embodiment, then pass through insulation Screw is by 1 locking positioning of ECU control panel on cavity interior walls.The UVW three-phase windings terminals of the stator 7 are respectively by three Copper bar 13 and ECU control panel 1 is weldingly connected, and the aperture penetrated for three copper bars 13 is provided on cavity wall.It is set on cavity wall simultaneously There is waterproof vent valve 2 and the waterproof electrical connector 3 being externally electrically connected for it that is connected with ECU control panel 1.
Still as shown in connection with fig. 1, the left end of shaft 9 described in the present embodiment passes through casing 4 and protrudes into the closing chamber, shaft It is fixed with the initial position detection magnet 15 for establishing motor initial position angle on 9, and is directly provided on ECU control panel 1 Cooperate with the initial position detection magnet 15 to detect the position-detection sensor 16 of motor initial position angle, the rotor is forever Magnetic magnetic pole 11 and initial position detection magnet 15 by synchronize magnetize to ensure that the initial position angle of motor is constant.
High magnetic characteristics permanent magnet of initial position detection magnet described in the present embodiment 15 using diameter of phi 6, the position Detection sensor 16 uses reluctive transducer, is spaced the axial magnetic distance of reaction of 1.2mm between the two.
Synchronize the purpose that magnetizes be exactly so that initial position detection magnet 15 the pole N or the pole S always with rotor permanent magnet magnetic pole 11 The alignment of certain fixed position point, thus a constant initial position angle for binding established motor, in this way when using ECU control panel 1 and position-detection sensor 16 detect when, can be by this initial position angle of program setting memory consolidation, later no matter such as What replacement ECU control panel 1 can detect same initial position angle, without debugging again, substantially increase system ECU control The interchangeability of making sheet 1.
Back shroud 18 described in the present embodiment and cover plate for sealing circle 14 is equipped between cavity, and the end cap 6 and casing 4 it Between be equipped with end cap seal circle 5.
End cap 6 described in the present embodiment is equipped with the axis hole stretched out for shaft 9, installs bearing (in figure not on the inside of the axis hole Label), and the oil sealing 8 being set in shaft 9 is then arranged in the outer fix of bearing, oil sealing 8 uses the lips knot with self-tightening spring Structure oil sealing.
Waterproof vent valve 2 described in the present embodiment is using screw-type shell and is furnished with silicon sealing ring and waterproof ventilated membrane, For waterproof and keep the external and internal pressure of 4 inner cavity of closing chamber and casing balanced.
Certainly the above embodiments are only for explaining the technical ideas and features of the present invention, and its object is to allow be familiar with this The people of technology can understand the content of the utility model and implement accordingly, and the protection model of the utility model can not be limited with this It encloses.Any modifications made in accordance with the spirit of the main technical solutions of the utility model should all cover the guarantor in the utility model Within the scope of shield.

Claims (9)

1. a kind of high reliability integrated waterproof EPS motor, including casing (4), motor body and ECU control panel (1), casing (4) front end is fixed end cap (6), and motor body is set in casing (4), and motor body includes stator and rotor (7,12), and stator (7) is solid It is scheduled in casing (4), and rotor (12) includes the shaft that both ends are mounted on casing (4) and end cap (6) by bearing (17) (9), the rotor core (10) that is fixed on shaft (9) and several rotors of rotor core (10) peripheral surface are evenly distributed on forever Magnetic magnetic pole (11);It is characterized in that forming cavity outside the rear end of casing (4), back shroud (18) are fixed on cavity and form closing Chamber, ECU control panel (1) is set in the closing chamber and the UVW three-phase windings of the connection conductor by penetrating cavity wall and stator (7) Terminals are connected;Cavity wall is equipped with waterproof vent valve (2) and is connected with ECU control panel (1) and connects for it to outdoor electrical simultaneously The waterproof electrical connector (3) connect.
2. a kind of high reliability integrated waterproof EPS motor according to claim 1, it is characterised in that the shaft (9) One end passes through casing (4) and protrudes into the closing chamber, is fixed in shaft (9) for establishing the initial of motor initial position angle Position detection magnet (15), and ECU control panel (1) is equipped at the beginning of cooperating with the initial position detection magnet (15) to detect motor The position-detection sensor (16) of beginning position angle, the rotor permanent magnet magnetic pole (11) pass through with initial position detection magnet (15) It is constant to synchronize the initial position angle to magnetize to ensure motor.
3. a kind of high reliability integrated waterproof EPS motor according to claim 2, it is characterised in that the initial position The high magnetic characteristics permanent magnet that magnet (15) use diameter of phi 6 is detected, the position-detection sensor (16) is sensed using reluctance type Device is spaced the axial magnetic distance of reaction of 1.2mm between the two.
4. a kind of high reliability integrated waterproof EPS motor according to claim 1, it is characterised in that the back shroud (18) cover plate for sealing circle (14) are equipped between cavity, and are equipped with end cap seal circle (5) between the end cap (6) and casing (4).
5. a kind of high reliability integrated waterproof EPS motor according to claim 1, it is characterised in that the end cap (6) It is equipped with the axis hole stretched out for shaft (9), is equipped with the oil sealing (8) being set on shaft (9) in the axis hole.
6. a kind of high reliability integrated waterproof EPS motor according to claim 5, it is characterised in that the oil sealing (8) Using the dual lip configuration oil sealing with self-tightening spring.
7. a kind of high reliability integrated waterproof EPS motor according to claim 1, it is characterised in that the stator (7) UVW three-phase windings terminals electrical connector grafting phase is welded or passed through by three copper bars (13) and ECU control panel (1) respectively Even, the aperture penetrated for three copper bars (13) is provided on cavity wall.
8. a kind of high reliability integrated waterproof EPS motor according to claim 1, it is characterised in that the waterproof and breathable Valve (2) is using screw-type shell and is furnished with silicon sealing ring and waterproof ventilated membrane, for waterproof and keeps closing chamber and casing (4) The external and internal pressure of inner cavity is balanced.
9. a kind of high reliability integrated waterproof EPS motor according to claim 1, it is characterised in that the ECU control Plate (1) and the shaft (9) perpendicular arrangement.
CN201820936723.6U 2018-06-15 2018-06-15 A kind of high reliability integrated waterproof EPS motor Active CN208241463U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820936723.6U CN208241463U (en) 2018-06-15 2018-06-15 A kind of high reliability integrated waterproof EPS motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820936723.6U CN208241463U (en) 2018-06-15 2018-06-15 A kind of high reliability integrated waterproof EPS motor

Publications (1)

Publication Number Publication Date
CN208241463U true CN208241463U (en) 2018-12-14

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CN201820936723.6U Active CN208241463U (en) 2018-06-15 2018-06-15 A kind of high reliability integrated waterproof EPS motor

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110417168A (en) * 2019-08-07 2019-11-05 四川建筑职业技术学院 A kind of shaftless inner-rotor brushless motor designed using waterproof construction
CN111204372A (en) * 2020-03-09 2020-05-29 贵州航天林泉电机有限公司 Novel electric steering drive assembly with wire outlet structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110417168A (en) * 2019-08-07 2019-11-05 四川建筑职业技术学院 A kind of shaftless inner-rotor brushless motor designed using waterproof construction
CN111204372A (en) * 2020-03-09 2020-05-29 贵州航天林泉电机有限公司 Novel electric steering drive assembly with wire outlet structure

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