CN207363873U

CN207363873U - Electronic oil pump

Info

Publication number: CN207363873U
Application number: CN201721110899.8U
Authority: CN
Inventors: 不公告发明人
Original assignee: Hangzhou Sanhua Research Institute Co Ltd
Current assignee: Hangzhou Sanhua Research Institute Co Ltd
Priority date: 2017-08-31
Filing date: 2017-08-31
Publication date: 2018-05-15
Anticipated expiration: 2027-08-31

Abstract

A kind of electronic oil pump, including housing, pump rotor, transmission shaft, rotor, stator module and circuit board module, housing includes at least the first housing, the second housing and the 3rd housing, pump inner cavity is formed between first housing and second housing, motor cavity is formed between second housing and the 3rd housing, pump rotor is placed in pump inner cavity, rotor, stator module and circuit board module are placed in motor cavity, first housing is detachably connected with the second housing, and the second housing and the 3rd housing are detachably connected.

Description

Electronic oil pump

【Technical field】

It the utility model is related to a kind of automotive field, more particularly to pump installation.

【Background technology】

Automobile industry is grown rapidly, with automotive performance towards safer, more reliable, more stable, full-automatic intelligent and Environmental protection and energy saving direction is developed, and electronic oil pump is largely applied in vehicle lubricating system and cooling system, and is well positioned to meet The requirement in market.

Electronic oil pump is mainly that the lubricating system of automobile and cooling system provide power source, and electronic oil pump is installed on vehicle On, the structure of electronic oil pump how is designed, is a problem to be solved with facilitating the peace of electronic oil pump to assemble and repairing.

【Utility model content】

The purpose of this utility model is to provide a kind of ease of assembly, electronic oil pump easy to repair.

To achieve the above object, a kind of embodiment of the utility model adopts the following technical scheme that a kind of electronic oil pump, Including housing, pump rotor, transmission shaft, rotor, stator module and circuit board module, the housing includes at least first shell Body, the second housing and the 3rd housing, form pump inner cavity, second housing between first housing and second housing Motor cavity is formed between the 3rd housing, the pump rotor is placed in the pump inner cavity, the rotor, stator pack Part and circuit board module are placed in the motor cavity, and the electronic oil pump is formed with oil inlet and oil outlet, the oil inlet Mouth and the oil outlet are connected with pump inner cavity, and first housing is detachably connected with second housing, the second shell Body and the 3rd housing are detachably connected.

Since the first housing and the second housing are detachably connected, be conveniently arranged at pump inner cavity pump rotor can maintenance, by It is detachably connected in the 3rd housing and the second housing, is conveniently arranged at nail component, rotor assembly and the control of motor cavity The maintenance of circuit board module.

【Brief description of the drawings】

Fig. 1 is a kind of dimensional structure diagram of embodiment of the electronic oil pump of the utility model；

Fig. 2 is a direction cross section structure schematic diagram of the first embodiment of electronic oil pump in Fig. 1；

Fig. 3 is another direction cross section structure schematic diagram of the first embodiment of electronic oil pump in Fig. 1；Fig. 4 is Fig. 1 The overlooking the structure diagram of the first embodiment of middle electronic oil pump；

Fig. 5 is the overlooking the structure diagram of the electronic oil pump of the first housing in unassembled Fig. 1；

Fig. 6 is a direction dimensional structure diagram of the first embodiment of the first housing in Fig. 1；

Fig. 7 is the dimensional structure diagram in another direction of the first embodiment of the first housing in Fig. 1；

Fig. 8 is the overlooking the structure diagram of the first housing in Fig. 6；

Fig. 9 is the present invention looks up structural representation of the first housing in Fig. 6；

Figure 10 is the cross-sectional view in a direction of the first housing in Fig. 6；

Figure 11 is the cross-sectional view in another direction of the first housing in Fig. 6；

Figure 12 is the dimensional structure diagram of transmission shaft in Fig. 2；

Figure 13 is the dimensional structure diagram in a direction of the first embodiment of the second housing in Fig. 1；

Figure 14 is the dimensional structure diagram in another direction of the first embodiment of the second housing in Fig. 1；

Figure 15 is a cross-sectional view of the second housing in Figure 13；

Figure 16 is the A portions partial enlargement structural representation of the second housing in Figure 15；

Figure 17 is the B portions partial enlargement structural representation of the second housing in Figure 15；

Figure 18 is a kind of cross section structure schematic diagram of second of embodiment of the second housing in Fig. 1；

Figure 19 is the dimensional structure diagram in a direction of the 3rd housing in Fig. 1；

Figure 20 is a positive structure diagram of the 3rd housing in Figure 19；

Figure 21 is the dimensional structure diagram in another direction of the 3rd housing in Fig. 1；

Figure 22 is another positive structure diagram of the 3rd housing in Figure 19；

Figure 23 is a kind of cross-sectional view of the 3rd housing in Figure 19；

Figure 24 is an a kind of main structure diagram of state of pump rotor in Fig. 2；

Figure 25 is a kind of dimensional structure diagram of internal rotor in Figure 24；

Figure 26 is a positive structure diagram of internal rotor in Figure 25；

Figure 27 is a cross-sectional view of internal rotor in Figure 25；

Figure 28 is a dimensional structure diagram of outer rotor in Figure 24；

Figure 29 a are a kind of main structure diagrams of transmission shaft in Figure 12；

Figure 29 b are another positive structure diagrams of transmission shaft in Figure 12；

Figure 29 c are A-A cross section structure schematic diagrams of the transmission shaft in Figure 29 a；

Figure 30 is the dimensional structure diagram in a direction of partition plate in Fig. 2；

Figure 31 is the dimensional structure diagram in another direction of partition plate in Fig. 2；

Figure 32 is a positive structure diagram of partition plate in Figure 30；

Figure 33 is a cross section structure schematic diagram of partition plate in Figure 30；

Figure 34 is a kind of dimensional structure diagram of the combination of mounting bracket and capacitance in Fig. 2；

Figure 35 is the main structure diagram of the combination of mounting bracket and capacitance in Figure 34；

Figure 36 is a kind of dimensional structure diagram of mounting bracket in Fig. 2；

Figure 37 is a kind of main structure diagram of mounting bracket in Figure 36；

Figure 38 is the partial enlargement structural representation in the C portions of mounting bracket in Figure 36.

【Embodiment】

The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings：

Electronic oil pump can be applied in vehicle lubricating system and/or cooling system, can be vehicle lubricating system and/or Working media in cooling system provides the circulation power of flowing, and vehicle lubricating system and/or cooling system can be power train System provides lubricating oil and/or cooling oil.

Referring to Fig. 1 to Fig. 2, electronic oil pump 100 includes housing, rotor 3, stator module 4, transmission shaft 5, pump rotor 8 And circuit board module 6；Housing can form cavity, rotor 3, stator module 4, transmission shaft 5, pump rotor 8 and circuit Plate component 6 is placed in cavity.When electronic oil pump 100 works, circuit board module 6 is pressed by controlling by the electric current of stator module 4 Change according to certain rule, so as to control stator module 4 to produce the excitation field changed, work of the rotor 3 in excitation field With lower rotation, rotor 3 drives pump rotor 8 to rotate by transmission shaft 5, when pump rotor 8 rotates so that working media is forced out Oil outlet is so as to produce the power of flowing.

Housing forms cavity, and in the present embodiment, cavity includes pump inner cavity 80 and motor cavity 90, and pumping can have in inner cavity 80 Working media flows through, and pump rotor 8 is arranged at pump inner cavity 80；Motor cavity 90 is without working media by the way that stator module 4, motor turn Son 3 and circuit board module 6 are arranged at motor cavity 90；So setting makes stator module 4 and circuit board module 6 be filled with working media Separate, so that ensureing the performance of stator module and circuit board will not be influenced be subject to working media；At the same time in separate pump Interior sealing between chamber and motor cavity it is relatively simple for structure, interior sealing includes an oil sealing 50, concrete structure in the present embodiment Description sees below.

Referring to Fig. 1 to Fig. 3, in the present embodiment, housing includes the first housing 1, the second housing 2 and the 3rd housing 7, and first 1 and second housing 2 of housing is detachably connected, and the second housing 2 is detachably connected with the 3rd housing 7；So relative to non-dismountable Housing connection for, easy to which the parts being arranged in cavity are detected and are repaired, for example open the first housing and the The connection of two housings, can detect the operating condition of pump rotor and replace pump rotor as needed, open the second housing and the 3rd The connection of housing can detect the operating condition of circuit board module and circuit board assemblies are carried out maintenance and replaced as needed, this Sample need not destroy other functions of whole electronic oil pump, advantageously reduce cost.

With reference to Fig. 2 and Figure 13, the second housing 2 includes first 21 and second 22, first 21 and second 22 one Shaping, the first housing 1 and first 21, and first 21 and the 3rd housing 7 are detachably connected.Two kinds of implementation introduced below Mode：Pump inner cavity 80, the second housing 2 and the 3rd shell are formed in the first embodiment, between the first housing 1 and the second housing 2 Motor cavity 90 is formed between body 7, the side wall of first 21 formation electronic oil pump, second 22 substantially vertical sets with first 21 Put, second 22 middle and upper part for being arranged at the second housing 2, motor is formed between second 22 and the 3rd housing 7 in the present embodiment Inner cavity 90, forms pump inner cavity 80 between the first housing 1 and second 22, such structure can ensure second 22 and first The leakproofness of 21 junction, can prevent the working media in pump inner cavity 80 from being let out in the junction of first 21 and second 22 Dew, it is simple in structure.Certainly, in second of embodiment：Second housing 2 includes second 22, not including first, the 3rd housing 7 further include first 21, in present embodiment equivalent to by first in the first embodiment and the 3rd housing one into Shape, such first housing 1 are connected with second 22, and the 3rd housing 7 is connected by first 21 with second 22, so first Formed between second 22 of 1 and second housing 2 of housing and pump inner cavity 80, first of the 3rd housing 7 and the second of the second housing 2 Motor cavity 90 is formed between portion 22, so prevents the working media of outside from passing through the 3rd housing of embodiment of above and first Junction between portion enters motor cavity, is conducive to improve the leakproofness of motor cavity, and simplifies structure.

Referring to Fig. 2 to Fig. 5, in the present embodiment, electronic oil pump 100 includes pump rotor 8, and pump rotor 8 includes 81 He of internal rotor Outer rotor 82, internal rotor 81 include multiple external tooths, and outer rotor 82 includes multiple internal tooths, the internal tooth of outer rotor 82 and internal rotor 81 Formed with pressure chamber 801 between external tooth, in the present embodiment, outer rotor 82 is sheathed on the periphery of internal rotor 81, the portion of outer rotor 82 Internal tooth is divided to be engaged with the part external tooth of internal rotor 81.Referring back to Fig. 1 to Fig. 5, electronic oil pump includes oil inlet 11 and oil outlet 12, Working media can enter pressure chamber 801 by oil inlet 11, and working media can leave pressure chamber 801 by oil outlet 12； Since, there are certain eccentricity, internal rotor 81 is when rotating, outside the part of internal rotor 81 between internal rotor 81 and outer rotor 82 Tooth is engaged with the part internal tooth of outer rotor 82, so that drive outer rotor 82 to rotate, during the rotation of pump rotor 8 is turned around, pressure 801 internal volume of power chamber changes, specifically, when pump rotor 8 turns to a certain angle from section start, in pressure chamber 801 Gradually increase is so as to form parital vacuum for volume, and working media is just sucked into pressure chamber 801 from oil inlet 11, when pump rotor 8 When being rotated further, 801 volume of pressure chamber full of working media is gradually reduced, and working media is squeezed, so that into Working media in pressure chamber 801 is pressed out to oil outlet 12 so as to produce the power of flowing.In the present embodiment, 11 He of oil inlet The connection of the first connection chamber is provided between pressure chamber 801, the second connection chamber is set between oil outlet 12 and pressure chamber 801, so Structure by first connection chamber and second connection chamber working media is cached, be conducive to improve vibration and noise, specifically Structure description sees below.

Referring to Fig. 1 to Fig. 8, the first housing 1 is detachably connected with the second housing 2, and the second housing 2 and the 3rd housing 7 are removable Unload connection；In the present embodiment, the first housing 1 and the second housing 2 are connected by the first screw 123, and the first housing 1 is formed with first Intercommunicating pore 13, the second housing 2 are formed with the first threaded hole 231, and the first screw 123 is installed from 1 direction of the first housing and with second Housing 2 is threadedly coupled.At least partly the first screw 123 can be dismounted in the outside of housing, and so setting makes tearing open for electronic oil pump Fill more convenient, so as to be conducive to the maintenance of pump rotor in electronic oil pump, also may be used between certain first housing, 1 and second housing 2 To connect in other way, for example dismountable connection mode such as grafting, clamping.In order to improve the reliability of connection, the One housing 1 is formed with the first flange part 15, the first radially extending along electronic oil pump of flange part 15, and the first intercommunicating pore 13 forms in First flange part 15 is simultaneously set close to the edge of the first flange part 15.When electronic oil pump is installed on transmission system in order to prevent and its The interference of his component, the first intercommunicating pore 13 is the first sink hole 131 and the first through hole 132, wherein the hole of the first sink hole 131 Footpath is more than the aperture of the first through hole 132, and the depth of the first sink hole 131 is slightly larger than the height of the nut of the first screw 123, this The top surface of the first screw 123 is less than the upper surface of the first flange part 15 after the first screw of sample 123 is installed, and prevents the first screw 123 Interference to miscellaneous part；The situation of first screw relief portion is set in the part of the assembling electronic oil pump of transmission system certainly Under, it may not be necessary to first sink hole 131 is set in the first intercommunicating pore 13, the first through hole 132 is only included, can so make The first intercommunicating pore is obtained closer to the radial edges of the first flange part or so that the edge of the first intercommunicating pore and the first flange part Distance it is bigger, facilitate the first connection hole arrangement.

Second housing 2 is detachably connected with the 3rd housing 7, and specifically, the second housing 2 and the 3rd housing 7 pass through the second spiral shell The connection of nail 232, the 3rd housing 7 are formed with the second intercommunicating pore 73, and the second housing 2 is formed with the second threaded hole 241, the second screw 232 install from the direction of the 3rd housing 7 and are threadedly coupled with the second housing 2.It is of course also possible to the 3rd housing 7 is formed with second Threaded hole, the second housing 2 are formed with the second intercommunicating pore, the second screw 232 from the installation of the direction of the second housing 2 and with the 3rd housing 7 are threadedly coupled.Concrete structure is designed according to the demand of electronic oil pump.So setting makes the dismounting of electronic oil pump more square Just, so as to be conducive to the detection and maintenance of the parts such as circuit board module in electronic oil pump.Certain second housing, 2 and the 3rd housing 7 can also by grafting, be clamped or wait other dismountable connection modes.In order to improve the second housing 2 and the 3rd housing 7 Connection reliability, and simplify structure, wall thickness of the 3rd housing 7 at the second intercommunicating pore 73 is more than other portions of the 3rd housing 7 The wall thickness of position；First 21 of the second housing 2 includes 201 and second flange part 24 of cylindrical portion at the same time, and cylindrical portion 201 is formed with electricity Machine inner cavity, the second flange part 24 protrude to be formed from cylindrical portion 201 to the periphery of cylindrical portion 201, and the second flange part 24 is formed with Two threaded holes 241, wall thickness of second flange part 24 at the second threaded hole 241 are more than the wall at other positions of the second flange part 24 It is thick.Certainly, in order to simplify structure, the appearance and size of electronic oil pump is reduced, the second housing 2 can not also include the second flange part, Cylindrical portion is formed with the second threaded hole, and in order to ensure bonding strength, wall thickness of the cylindrical portion at second threaded hole is more than institute State the wall thickness of cylindrical portion other parts.

Referring to Fig. 2 to Figure 11, in present embodiment, the first housing 1 includes the first main part 14 and the first flange part 15, and The diameter of one main part 14 is less than the diameter of the first flange part 15, and the first housing 1 includes at least 2 the first intercommunicating pores 13, and first Intercommunicating pore 13 is distributed along the circumference array of the first housing 1, and in present embodiment, the first intercommunicating pore 13 forms in the first flange part 15, the first intercommunicating pore 13 is counterbore, and specifically, the first intercommunicating pore 13 is cylindricality counterbore, and the first intercommunicating pore 13 includes the first heavy platform 131 and first through hole 132 of hole, wherein the aperture of the first sink hole 131 is more than the aperture of the first through hole 132, the first heavy platform The depth in hole 131 is slightly larger than the height of the nut of the first screw 123, the top of the first screw 123 after such first screw 123 is installed Face is less than the upper surface of the first flange part 15, prevents interference of first screw 123 to miscellaneous part.Certain first intercommunicating pore 13 Can be cone shaped countersink or spot facing hole, so set on the one hand can ensure to make after the installation of the first screw 123 electronic oil pump with The mounting portion of gearbox will not recurring structure interference, on the other hand make the overall structure of electronic oil pump beautiful；First intercommunicating pore 13 Edge and the minimum range of outer circumferential surface of the first flange part 15 of the first housing 1 be more than or equal to 1mm, so setting to ensure First intercommunicating pore 13 is not in notch in processing, while will not destroy the outer circumferential surface of the first flange part 15 of the first housing 1； The minimum range of the outer circumferential surface of the edge of first intercommunicating pore 13 and the first main part 14 is more than or equal to 1mm, and so setting can be to prevent Only the first intercommunicating pore 13 destroys the outer circumferential surface of the first main part 14 of the first housing 1 in processing.

First housing 1 is also formed with oil inlet 11, oil outlet 12, first connects chamber 112 and second and connects chamber 121, into First connection chamber 112 is set between hydraulic fluid port 11 and pressure chamber 801, the second connection chamber is set between oil outlet 12 and pressure chamber 801 121；Chamber 121 is connected with second to cache working media, be conducive to improve vibration and noise by the first connection chamber 112. In the present embodiment, oil inlet 11 forms in the first main part 14 of the first housing 1, and the first connection chamber 112 is arranged at the first housing 1 The first flange part 15, oil inlet 11 is generally circular, and " generally circular " here refers to circularity within 1mm, certainly into Hydraulic fluid port 11 can also be other shapes, such as the shape such as ellipse, and the first connection chamber 112 is substantially arc-shaped, the first connection chamber 112 include head 1121 and afterbody 1122, and the actual internal area of the first connection chamber 112 gradually increases from head 1121 to afterbody 1122 Add, oil inlet 11 is correspondingly arranged with afterbody 1122, oil inlet 11 with；So pressure chamber 801 is coordinated to be formed necessarily in afterbody 1122 Vacuum, be conducive to the suction of working media.

Second connection chamber 121 connects chamber 112 with first and is substantially circumferentially distributed in the first housing 1, the center of oil inlet 11 Substantially pass through the center of the first housing with the line at the center of oil outlet 12, so advantageously allow whole electronic oil pump and entirely justify Week is utilized, and is conducive to improve the operating pressure of the working media by electronic oil pump.

Oil outlet 12 is more than other positions of the second connection chamber 112 with the second actual internal area for connecting 112 junction of chamber Actual internal area, so set and advantageously allow to enter the working media of the second connection chamber 112 from pressure chamber 801 and arrange as early as possible Go out.

In the present embodiment, oil outlet 12 is set with oil inlet 11 along the axial direction of electronic oil pump, i.e. oil inlet and oil outlet The same direction of electronic oil pump is arranged at, working media oil inlet direction is arranged substantially in parallel with fuel-displaced direction, and so setting makes Obtain only needs to set a sealing between transmission system, simple in structure.First main part 14 is provided with first groove 141, With reference to Fig. 2, electronic oil pump 100 further includes the first sealing ring 20, and specifically, the first sealing ring 20 is arranged at the of the first housing 1 In one groove 141, when electronic oil pump 100 loads in the electric drive unit of automobile gearbox or automobile, so it is provided with and is beneficial to The high pressure oil of the low pressure oil of inlet side and outlet side is kept apart.Certain oil inlet can also be vertically arranged with oil outlet direction, Oil outlet can not also be arranged on the first housing, for example be arranged at the second housing so that working media influent stream direction is with going out stream side To be vertically arranged or it is angled set, to meet the cooperation of electronic oil pump and transmission system under different operating modes installation and by electronics The outside of transmission system is hung on outside oil pump.

Referring to Figure 13 to Figure 16, the second housing 2 includes first 21 and second 22, first 21 and second 22 one Shaping, the first housing 1 and first 21 are detachably connected, and first 21 and the 3rd housing 7 are detachably connected.In the present embodiment, At least part side wall of first 21 formation electronic oil pump, second 22 with first 21 substantially vertical setting, it is second 22 big Cause forms in the middle and upper part of the second housing 2, and motor cavity, the first housing 1 and second are formed between second 22 and the 3rd housing 7 Pump inner cavity is formed between portion 22, such structure can ensure the leakproofness of the junction of second 22 and first 21, can be with Prevent the working media in pump inner cavity 80 from being revealed from the junction of first 21 and second 22, it is simple in structure.

Include 201 and second flange part 24 of cylindrical portion for first 21, cylindrical portion 201 includes first end 23 and the second end 27, the second flange part 24 and the second end 27 are integrally formed, and first end 23 is set away from the second flange part 24, first end 23 It is formed with the first threaded hole 231, the first threaded hole 231 circumferentially array distribution or is uniformly distributed, the first connection of the first housing 1 Hole 13 and the first threaded hole 231 of the second housing 2 are correspondingly arranged, and the first housing 1 is connected with the second housing 2 by the first screw 123 Connect；Second flange part 24 is formed with the second threaded hole 241, and the second threaded hole 241 is corresponding with the second intercommunicating pore 73 of the 3rd housing 7 Set, the second housing 2 is connected with the 3rd housing 7 by the second screw 232, wherein the first threaded hole and the second threaded hole are blind Hole.In the present embodiment, the second flange part 24 further includes the first lug boss 242, and the second threaded hole 241 forms in the first lug boss 242, the thickness of second flange part 24 is more than the thickness at other positions of the second flange part 24 where the first lug boss 242, so Be conducive to improve bonding strength, and the integral thickness and weight of the second housing 2 will not be increased, advantageously reduce cost.Certainly, When the thickness of the second flange part 24 of the second housing 2 is sufficiently thick, the second flange part 24 can not also set the first lug boss 242, " sufficiently thick " here refers to that the thickness of the second flange part is more than or equal to 3mm.

Electronic oil pump 100 includes radiating part, and at least part radiating part is correspondingly arranged with motor cavity 90, for being arranged at The heat generating components such as stator module, circuit board module and the rotor of motor cavity 90 radiate.In the present embodiment, heat dissipation Portion includes the first radiating part and the second radiating part.

Referring to Fig. 2 Figure 13 to Figure 17, the material of the second housing 2 is metal material, is conducive to improve thermal conductivity, specifically, In present embodiment, the material of the second housing 2 is aluminium, and the second housing 2 includes multiple first radiating parts 26, in the present embodiment, One radiating part 26 forms in cylindrical portion 201, and the first radiating part 26 increases heat dissipation effect by increasing the surface area of cylindrical portion 201, The surface area ratio of cylindrical portion of the surface area of the cylindrical portion of the first radiating part with being not provided with the first radiating part is set to be more than or equal to 1, outer wall generally uniform distribution of first radiating part 26 along at least part cylindrical portion 201.

First radiating part 26 includes the groove for forming in cylindrical portion, so not only adds heat dissipation area, and cause circle The thickness of canister portion reduces, and further the heat of motor cavity sheds.

In the present embodiment, the first radiating part 26 includes crest portion 262 and trough portion 261,262 opposed valleys portion of crest portion 261 central axis away from electronic oil pump are set, and crest portion 262 is connected with trough portion 261 by a transition part transition；It is such Each portion of structure of first radiating part 26 uses and seamlessly transits, appearance better appearance while thermal diffusivity is improved；Certain first Radiating part 26 can also be multiple continuous raised using the bottom 261 of groove as benchmark, relative to being not provided with the first radiating part Cylindrical portion 201, the first radiating part 26 in the present embodiment is it is also possible that heat dissipation area increased, and can ensure The thickness of the cylindrical portion 201 of two housings and then the intensity for ensureing the second housing 2.In the present embodiment, the second housing 2 is indulged vertically Obtain a longitudinally cutting face to cutting, the cross sectional shape in the longitudinally cutting face of the first radiating part 26 substantially in echelon, certainly, first The cross sectional shape in the longitudinally cutting face of radiating part 26 can also be the other shapes such as rectangle or triangle.

With reference to Fig. 3, stator module 4 includes stator core 41 and stator coil 42, in the axial direction of electronic oil pump, stator module 4 and the 26 least partially overlapped setting of the first radiating part, i.e. at least partly the first radiating part 26 covers in the outer of partial stator component 4 Week, so setting can ensure stator module 4, and heat caused by coil 42 can be in shortest distance by first at work Radiating part 26 sheds；The first radiating part 26 is more than or equal to stator module 4 in the axial shortest length L of electronic oil pump in Figure 15 The vertical height H3 of stator core 41, stator core 41 contact setting with the second housing 2；Stator module can be ensured by so setting 4 at work heat caused by coil can shed uniformly across the first radiating part 26 so that stator module 4 dissipate Heat is more efficient.

Second housing 2 further includes 27 and the 3rd groove 28 of second groove, and with reference to Fig. 1, it is close that electronic oil pump 100 further includes second 30 and the 3rd sealing ring 40 of seal, the second sealing ring 30 are arranged in the second groove 27 of the second housing in Figure 10, the 3rd sealing Circle 40 is arranged in the 3rd groove 28 of the second housing in Figure 10, and sealed connection can be formed with transmission system by so setting.

With reference to Fig. 2, electronic oil pump 100 further includes the first supporting part 29, and the first supporting part 29 can be passed directly or indirectly Moving axis 5 plays the role of support, and referring to Figure 15, in the present embodiment, the first supporting part 29 is integrally machined with the second housing 2 and forms, It is specifically 22 integrally formed with second.

Second housing 2 is formed with the first chamber 291 and the second chamber 292, and the first chamber 291 and the second chamber 292 pass through second 22 Separate, second 22 integrally formed with the first supporting part 29, and the first supporting part 29 includes being formed to motor cavity from second 22 Annular relief.

Figure 15 is the first embodiment of the second housing, and first is supported in by clutch shaft bearing 60 with reference to Fig. 2 transmission shafts 5 Supporting part 29, the inner circumferential of clutch shaft bearing 60 are contacted with the outer circumferential surface of transmission shaft 5, the periphery of clutch shaft bearing 60 and the first supporting part 29 Inner circumferential contact；

It is provided with intercommunicating pore 2933 for second 22, intercommunicating pore 2933 connects the first chamber 291 and the second chamber 292, and transmission shaft 5 is logical Cross intercommunicating pore 2933 and stretch into the first chamber 291.

Electronic oil pump 100 further includes oil sealing 50, and the inner circumferential of oil sealing 50 is contacted with the outer circumferential surface of transmission shaft 5, outside oil sealing 50 Week contacts with the first supporting part 29.

Figure 18 is second of embodiment of the second housing, and transmission shaft 5 is supported directly upon the first supporting part 29, the first support The inner peripheral surface in portion 29 contacts setting with the periphery of transmission shaft 5, and 29 inner peripheral surface of the first supporting part is provided with lubrication groove 298, improves profit It is sliding.In present embodiment, the second housing 2 ' shapes the first supporting part 29 ', and so setting can reduce by a clutch shaft bearing, directly Support by the use of the first supporting part as transmission shaft one end, makes the structure of electronic oil pump compacter.

Electronic oil pump 100 further includes the second supporting part 208, and the second supporting part 208 provides second support for transmission shaft 5, First supporting part 29 and the second supporting part 208 are coaxially disposed, and improve the stability of the support of transmission shaft 5.

Electronic oil pump 100 further includes partition plate 9, and partition plate 9 is arranged at motor cavity 90, the second supporting part 208 and the one of partition plate 9 Shaping.

Transmission shaft 5 is supported in the second supporting part 208 by second bearing 70, and the second supporting part 208 is included from partition plate to electricity The annular relief that machine inner cavity is formed.The inner circumferential of second bearing 70 is contacted with the periphery of transmission shaft 5, the periphery of second bearing 70 with The inner circumferential contact of second supporting part 208.

Clutch shaft bearing 60 and second bearing 70 can be that rolling bearing can also be sliding bearing, for middle low -velocity electron oil Pump disclosure satisfy that the requirement of abrasion and the requirement in rotation capital of a country using sliding bearing, while can reduce cost；For electricity at a high speed Seed oil pumps, and key influence factor when the bearing capacity of abrasion, running accuracy and bearing will be bearing type selecting, uses as far as possible at this time Rolling bearing.

Referring to Figure 30 to Figure 33, partition plate 9 includes the first lug boss 91, the first bottom 92, the second lug boss 94, reinforcing rib 93；Second supporting part includes the first lug boss 91, and reinforcing rib 93 circumferentially array distribution or is uniformly distributed, specifically, reinforcing rib 93 the first lug bosses 91 of connection and the first bottom 92, so set the mechanical strength that can ensure the first lug boss 91, so that Obtain the first lug boss 91 to be not susceptible to deform, in the present embodiment, the shape of reinforcing rib 91 is roughly triangular, naturally it is also possible to is Other shapes, for example rectangle or the shape such as trapezoidal.Outer rim of second lug boss 94 relative to the first lug boss 91 closer to partition plate 9 Set, the outer diameter of the second lug boss 94 is more than the outer diameter of the first lug boss 91, referring to Fig. 2 or Fig. 3, the present embodiment In, the second supporting part 208 is fixedly connected with the second housing 2, specifically, with reference to Figure 33 and Figure 15, the second lug boss 94 and second The inner circumferential interference fit connection of the cylindrical portion of housing 2, certainly, can also pass through screw or bolt between 9 and second housing 2 of partition plate Or the mode of riveting connection, the outer circumferential surface of the first bottom 92 of partition plate 9 and the second housing 2 interference fit connect.Partition plate 9 is also at least Including two third protrusion portions 95, third protrusion portion 95 is axially extending to the direction away from the first lug boss 91, in the present embodiment, Second supporting part 9 includes 3 third protrusion portions 95, and third protrusion portion 95 substantially circumferentially array distribution or is uniformly distributed, the 3rd Lug boss 95 is provided centrally with threaded hole 951.Connecting portion includes the second lug boss 94.

Referring to Figure 15, the second housing 2 further includes first step portion 294, and first step portion 294 includes the first confined planes 2941 With the second confined planes 2942, first step portion 294 is arranged at the second chamber 292 of the second housing 2, and first step portion 294 can make For the stator module 4 in Fig. 1 the spacing of direction of principal axis is driven in electronic oil pump；Second housing 2 further includes second step portion 295, Second step portion 295 includes the 3rd confined planes 2951 and the 4th confined planes 2952, and second step 295 is than first step portion 294 more The second flange part 24 close to the second housing 2 is set, 4 and second housing 2 of the stator module interference fit connection in Fig. 2, specifically Ground, the outer wall of stator module 4 and second confined planes 2942 at least part first step portion 294 of the second housing 2 are interference fitted Connection, first confined planes 2941 in first step portion 294 are abutted with stator module 4, so as to fulfill first step portion 294 to Fig. 1 Middle stator module 4 is driven the spacing of direction of principal axis electronic oil pump, so as to be conducive to the spacing of stator module.

Referring to Figure 19 to Figure 23, the 3rd housing 7 includes body 71 and connecting portion 72, the face on the basis of body 71, connecting portion 72 are located at the lower section of body 71, and the 3rd housing 7 is formed with the second intercommunicating pore 73, and the second of the second intercommunicating pore 73 and the second housing 2 Threaded hole 241 is correspondingly arranged, and in the present embodiment, the second housing 2 is connected with the 3rd housing 7 by the second screw 232, also may be used certainly With by other connection modes, for example connection mode such as grafting, clamping or welding；Referring to Figure 23, connecting portion 72 includes first Housing limiting section 76, the height of the second housing limiting section 243 of the second housing 2 in the height H2 and Figure 15 of the first housing limiting section 76 Spend that H1 is roughly equal, " roughly equal " here refers to the absolute value of the difference of height within 0.3mm, and so setting can use up Amount ensures that the 3rd housing 7 is bonded as far as possible with the contact surface of the second housing 2, ensures that the 3rd housing will not incline in assembling process Tiltedly, so as to avoid the grafting to plug receptacle and connector from impacting.3rd housing 7 is also formed with mounting hole 77, mounting hole 77 For being connected with gearbox or driving unit, the present embodiment includes two mounting holes 77.

Referring to Figure 19 to Figure 23, Figure 19 to Figure 23 is the structure diagram of the 3rd housing the first embodiment, the 3rd shell Body 7 is also formed with the second radiating part 701, and the second radiating part 701 includes radiating ribs 74, and radiating ribs 74 and the one of the 3rd housing 7 are noted It is moulded into type, in the present embodiment, radiating ribs is set as much as possible on the 3rd housing, so that increasing heat radiation area, is conducive to electricity The heat dissipation of road plate, in the present embodiment, the lateral cross section shape of radiating ribs is rectangle, and the lateral cross section shape of certain radiating ribs also may be used Think the other shapes such as other shapes, for example trapezoidal, triangle, arc.

Referring to Figure 24 to Figure 28, pump rotor 8 includes internal rotor 81 and outer rotor 82, and internal rotor 81 includes multiple external tooths 811, Outer rotor 82 includes multiple internal tooths 821, and in the present embodiment, outer rotor 82 is sheathed on the periphery of internal rotor 81, and pump rotor 8 is rotating During, the part internal tooth 821 of the part external tooth 811 of internal rotor 81 and outer rotor forms internal messing, the external tooth 811 of internal rotor with Pressure chamber 801 is formed between the internal tooth 821 of outer rotor, in present embodiment, the interior gear ratio internal rotor 81 of outer rotor 82 it is outer The number of teeth is one more, and specifically, the interior number of teeth of outer rotor 82 is 11, and the outer number of teeth of internal rotor 81 is 10, certainly, outer rotor 82 The interior number of teeth and the outer number of teeth of internal rotor 81 can also be other quantity；In the present embodiment, outer rotor 82 is different from internal rotor 81 The heart and there are certain eccentricity, so sets to ensure in the part external tooth 811 of internal rotor 81 and the part of outer rotor 82 Tooth 821 can keep engagement when pump rotor 8 rotates, so that the volume of pressure chamber 801 changes, be conducive to work The suction and extrusion of medium.

Internal rotor 81 further includes a connecting portion 812, and connecting portion 812 is formed with connecting hole, and connecting portion 812 includes at least one First limiting section 8121, in the present embodiment, connecting portion 812 includes two planar portions and two cambered surface portions, wherein the first limiting section 8121 be planar portions, and connecting hole is substantially in long trough, and certainly, connecting portion 812 can also only include a planar portions and one section of arc Face, the first limiting section include planar portions, and connecting hole is substantially into D-shaped；Connecting portion 812 can also be other structures, certainly connection Hole can also be other shapes, for example connecting portion 812 includes 4 planar portions, and the first limiting section 8121 includes two of which plane Portion, connecting hole are rectangular or square；；Or other shapes with the first limiting section based on cylinder, wherein first The shape of limiting section can be one or more kinds of combinations.

With reference to referring to 12 and 29a to Figure 29 c, transmission shaft 5 include the first shaft part 51, the second shaft part 52, the 3rd shaft part 53, First shaft shoulder 54 and second shaft shoulder 55, the diameter of the second shaft part 52 are more than the diameter of the first shaft part 51 and the 3rd shaft part 53, the One shaft part 51 includes axle journal 512 and spindle nose 511,512 connectiing shaft head 511 of axle journal and the second shaft part 52, and spindle nose 511 includes at least one A second limiting section 5111, the second shaft part 52 connects the 3rd shaft part 53 and the first shaft part 5 is set, in the present embodiment, spindle nose 5111 The first limiting section 8121 of the second limiting section 5111 and internal rotor in Figure 26 81 be correspondingly arranged, in the present embodiment, transmission shaft 5 with Internal rotor 81 clearance fit in part connects, and on the one hand so setting can make transmission shaft be more easy to realize assembling with internal rotor, another Aspect enables internal rotor and transmission shaft Self-aligning by the gap between internal rotor and transmission shaft, to ensure internal rotor and transmission Reach coaxial required precision between axis.Certain transmission shaft can also be that interference fit or transition cooperation etc. are other even with internal rotor Connect mode.

Referring to Fig. 2, the periphery of the 3rd shaft part 53 of part of transmission shaft 5 contacts and is supported on the inner circumferential of second bearing 70 Second supporting part 208, second shaft shoulder 55 are butted on the end face of second bearing 70, and second bearing is limited in second by second shaft shoulder 55 Support part.

Clutch shaft bearing 60 is sheathed at the axle journal 512 of the first shaft part 51 of transmission shaft 5, and first shaft shoulder 54 of transmission shaft 5 can To be connected to the end face of clutch shaft bearing 60, in axial direction, clutch shaft bearing is limited in the first supporting part 29；Second bearing 70 is sheathed on At 3rd shaft part 53 of transmission shaft 5.

Referring to Figure 29 c, spindle nose 511 includes the first planar portions 501, the second planar portions 502, the first cambered surface portion 503 and the Two cambered surface portions 504, wherein the first planar portions 501 and the second planar portions 502 are oppositely arranged, the first cambered surface portion 503 and the second cambered surface Portion 504 is oppositely arranged, and the first planar portions 501 and the second planar portions 502 are arranged substantially in parallel, the first cambered surface portion 503 and the second arc Face 504 connects the both ends of the first planar portions 501 and the second planar portions 502 respectively；The connecting portion of internal rotor includes connecting hole, even The shape of interface and the shape shape of spindle nose are with setting, and spindle nose 511 is inserted into connecting hole, and the first planar portions and the second planar portions are with being connected The side wall interference fit of the corresponding connecting hole in portion, the side wall of the first cambered surface portion and the second cambered surface portion and the corresponding connecting hole of connecting portion Clearance fit, such transmission shaft assemble more convenient with connecting portion.

Include circuit board 61, electronic component and installation with reference to referring to Fig. 2 and Figure 34 to Figure 38, circuit board module 6 Stent 10, mounting bracket 10 are arranged between circuit board 61 and partition plate 9.Mounting bracket 10 is fixedly connected with partition plate 9, specifically, Mounting bracket 10 by screw or is bolted with partition plate 9, and certainly, mounting bracket 10 can also be by others even with partition plate 9 The mode of connecing connects, for example other connection modes such as riveting connection；Mounting bracket 10 is electrically connected with circuit board 61, mounting bracket 10 The electronic component of large volume can be carried, with reference to Figure 31 to Figure 34, mounting bracket 10 includes a receiving portion 102, receiving portion 102 With 10 integrated injection molding of mounting bracket, receiving portion 102 includes collet portion 1021 and sidepiece 1022, collet portion 1021 and sidepiece 1022 form accommodating chambers, and in the present embodiment, accommodating chamber is provided with the electronic component of a large volume, in the present embodiment, substantially Long-pending electronic component is a bulky capacitor 101, and in the present embodiment, collet portion 1021 is generally curved, collet portion 1021 and big electricity Hold 101 portion perimeter face contact setting, the collet portion 1021 of setting and sidepiece 1022 can be conducive to the circumferential direction of bulky capacitor 101 Positioning, so as to ensure that circumferential movement will not occur for bulky capacitor；Mounting bracket 10 also includes at least 2 clamping parts 103, the present embodiment In, mounting bracket includes 2 clamping parts 103, and clamping part 103 is separately positioned on the both sides of capacitance 101, and clamping part 103 includes the Simultaneously 1031, during bulky capacitor 101 loads receiving portion 102, first the first face 1031 with clamping part 103 of bulky capacitor 101 Contact, the outer circumferential surface on the first inclined-plane 1031 and bulky capacitor 101 is tangent at this time, when bulky capacitor 101 continues to install to receiving portion 102 When, have part power and act on the first face 1031, so that clamping part 103 is flared out, when the portion perimeter of bulky capacitor 101 When face is contacted with collet portion 1021, the portion perimeter face of bulky capacitor 101 does not act power with the first face of clamping part 103, this When original place return to initial position in the clamping part 103 of open configuration, so set on the one hand bulky capacitor can be ensured vertical It will not be moved on direction, on the other hand make the dismounting of bulky capacitor become simpler, improve the disassembly efficiency of bulky capacitor. Mounting bracket 10 is further included including at least two through holes 104, and through hole 104 substantially circumferentially array distribution or is uniformly distributed, this reality To apply in example, the quantity of the threaded hole 951 in the quantity of through hole 104 and 9 third protrusion portions 95 of partition plate is roughly equal, specifically, peace Dress stent 10 includes 3 through holes 104, the quantity of through hole 104 and the quantity of the threaded hole in 9 third protrusion portion 95 of the second supporting part 951 correspondent equals.

It should be noted that：Above example is merely to illustrate the utility model and not limits described by the utility model Technical solution, although this specification has been carried out being described in detail with reference to the above embodiments to the utility model, this Field it is to be appreciated by one skilled in the art that person of ordinary skill in the field still can modify the utility model Or equivalent substitution, and the technical solution of all spirit and scope for not departing from the utility model and its improvement, it should all cover In the right of the utility model.

Claims

1. a kind of electronic oil pump, including housing, pump rotor, transmission shaft, rotor, stator module and circuit board module, institute State housing and include at least the first housing, the second housing and the 3rd housing, shape between first housing and second housing Into pump inner cavity, motor cavity is formed between second housing and the 3rd housing, the pump rotor is placed in the pump Chamber, the rotor, stator module and circuit board module are placed in the motor cavity, the electronic oil pump be formed with into Hydraulic fluid port and oil outlet, the oil inlet and the oil outlet are connected with pump inner cavity, first housing and second housing It is detachably connected, second housing and the 3rd housing are detachably connected.

2. electronic oil pump according to claim 1, it is characterised in that：First housing and second housing pass through One screw connects, and first housing is formed with the first intercommunicating pore, and second housing is formed with the first threaded hole, and described first Screw is installed from first housing direction and is threadedly coupled with second housing.

3. electronic oil pump according to claim 2, it is characterised in that：First housing is formed with the first flange part, institute The first flange part radially extending along the electronic oil pump is stated, first intercommunicating pore forms in the flange part and close to described The edge of flange part is set.

4. the electronic oil pump according to Claims 2 or 3, it is characterised in that：First intercommunicating pore for the first sink hole and First through hole, wherein the aperture of first sink hole is more than the aperture of first through hole, first sink hole Height of the depth slightly larger than the nut of first screw.

5. electronic oil pump according to claim 1, it is characterised in that：Second housing and the 3rd housing pass through Two screws connect, and the 3rd housing molding has the second intercommunicating pore, and second housing is formed with the second threaded hole, and described second Screw is installed from the 3rd housing direction and is threadedly coupled with second housing.

6. electronic oil pump according to claim 1, it is characterised in that：Second housing and the 3rd housing pass through Two screws connect, and the 3rd housing molding has the second threaded hole, and second housing is formed with the second intercommunicating pore, and described second Screw is installed from second housing direction and is threadedly coupled with the 3rd housing.

7. electronic oil pump according to claim 1, it is characterised in that：3rd housing molding has the second intercommunicating pore, institute State wall thickness of wall thickness of the 3rd housing at second intercommunicating pore more than other positions of the 3rd housing.

8. electronic oil pump according to claim 5, it is characterised in that：Second housing includes cylindrical portion and the second flange Portion, the cylindrical portion is formed with the motor cavity, and second flange part is from the cylindrical portion to the periphery of the cylindrical portion Protrusion is formed, and second flange part is formed with second threaded hole.

9. electronic oil pump according to claim 8, it is characterised in that：Second flange part is at second threaded hole Wall thickness be more than second flange part other positions wall thickness.

10. electronic oil pump according to claim 5, it is characterised in that：Second housing includes cylindrical portion, the cylinder Formed with the motor cavity, the cylindrical portion is formed with second threaded hole in portion；The cylindrical portion is in second screw thread Wall thickness at hole is more than the wall thickness of the cylindrical portion other parts.

11. electronic oil pump according to claim 10, it is characterised in that：First housing and second housing pass through First screw connects, and first housing is formed with the first intercommunicating pore, and second housing is formed with the first threaded hole, and described the One screw is installed from first housing direction and is threadedly coupled with second housing；It is convex that first housing is formed with first Edge, the first flange part radially extending along the electronic oil pump, first intercommunicating pore form in the flange part simultaneously Set close to the edge of the flange part；First intercommunicating pore is the first sink hole and the first through hole, wherein described first The aperture of sink hole is more than the aperture of first through hole, and the depth of first sink hole is slightly larger than first screw The height of nut；Second housing is connected with the 3rd housing by the second screw, and the 3rd housing molding has second Intercommunicating pore, second housing are formed with the second threaded hole, second screw installed from the 3rd housing direction and with institute State the threaded connection of the second housing；Second housing is connected with the 3rd housing by the second screw, the 3rd housing into Shape has the second threaded hole, and second housing is formed with the second intercommunicating pore, and second screw is pacified from second housing direction Fill and be threadedly coupled with the 3rd housing；Wall thickness of 3rd housing at second intercommunicating pore is more than the 3rd shell The wall thickness at other positions of body；Second housing includes cylindrical portion and the second flange part, and the cylindrical portion is formed with the electricity Machine inner cavity, second flange part protrude to be formed from the cylindrical portion to the periphery of the cylindrical portion, second flange part into Shape has second threaded hole；Wall thickness of second flange part at second threaded hole is more than second flange part The wall thickness at other positions；Second housing includes cylindrical portion, and the cylindrical portion is formed with the motor cavity, the cylindrical portion It is formed with second threaded hole；Wall thickness of the cylindrical portion at second threaded hole is more than the cylindrical portion other parts Wall thickness.