CN207701348U - Electronic oil pump - Google Patents

Abstract

A kind of electronic oil pump, including shell, pump rotor, transmission shaft, rotor, stator module and circuit board module, shell includes at least first shell, second shell and third shell, pump inner cavity is formed between first shell and second shell, motor cavity is formed between institute's second shell and third shell, pump rotor is placed in the pump inner cavity, and rotor, stator module and circuit board module are placed in motor cavity, and pump inner cavity is not connected to motor cavity.

Description

Electronic oil pump

【Technical field】

The utility model is related to a kind of automotive field more particularly to the parts of vehicle lubricating system and/or cooling system.

【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/or cooling system provide power source, how to design electronic oil pump Structure, be a technical problem to be solved urgently with the structure and performance that improve electronic oil pump.

【Utility model content】

The purpose of this utility model is to provide a kind of electronic oil pumps.

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 shell, pump rotor, transmission shaft, rotor, stator module and circuit board module, the shell includes at least first shell Body, second shell and third shell form pump inner cavity, the second shell between the first shell and the second shell Motor cavity is formed between the third shell, 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 further includes oil inlet and oil outlet, in the pump Chamber is connected to the oil inlet and the oil outlet, and the pump inner cavity is not connected to the motor cavity.

Since the pump inner cavity of electronic oil pump is not connected to motor cavity, working media will not enter motor cavity, electric in this way Other structures need not be additionally arranged to ensure that the parts of motor cavity are corroded in machine inner cavity so that the sealing of electronic oil pump Performance is more preferable, while structure is simpler, advantageously reduces cost.

【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 structure diagram of the first embodiment of middle electronic oil pump；

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

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

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

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

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

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

Figure 11 is the cross-sectional view in another direction of first shell 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 second shell in Fig. 1；

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

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

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

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

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

Figure 19 is the dimensional structure diagram in a direction of third shell in Fig. 1；

Figure 20 is a positive structure diagram of third shell in Figure 19；

Figure 21 is the dimensional structure diagram in another direction of third shell in Fig. 1；

Figure 22 is another positive structure diagram of third shell in Figure 19；

Figure 23 is a kind of cross-sectional view of third shell 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 board in Fig. 2；

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

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

Figure 33 is a cross section structure schematic diagram of partition board 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 portions C of mounting bracket in Figure 36.

【Specific implementation mode】

The utility model is described in further detail in the following with reference to the drawings and specific embodiments：

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 shell, rotor 3, stator module 4, transmission shaft 5, pump rotor 8 And circuit board module 6；Shell can form cavity, rotor 3, stator module 4, transmission shaft 5, pump rotor 8 and circuit Board group part 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, to control the excitation field that stator module 4 generates variation, 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 to generate the power of flowing.

Shell 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 set to pump inner cavity 80；Motor cavity 90 passes through without working media, and stator module 4, motor turn Son 3 and circuit board module 6 are set to motor cavity 90；Setting makes stator module 4 and circuit board module 6 be filled with working media in this way It separates, to ensure that the performance of stator module and circuit board will not be influenced by working media；Simultaneously 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, shell includes first shell 1, second shell 2 and third shell 7, and first Shell 1 and second shell 2 are detachably connected, and second shell 2 is detachably connected with third shell 7；In this way relative to non-dismountable Shell connection for, convenient for the parts being set in cavity are detected and are repaired, for example open first shell and the The connection of two shells can detect the operating condition of pump rotor and replace pump rotor as needed, open second shell and third The connection of shell can detect the operating condition of circuit board module and circuit board assemblies are repaired and replaced as needed, this Sample need not destroy other functions of entire electronic oil pump, advantageously reduce cost.

In conjunction with Fig. 2 and Figure 13, second shell 2 includes first 21 and second 22, first 21 and second 22 one Forming, first shell 1 and first 21 and first 21 and third shell 7 are detachably connected.Two kinds of implementation introduced below Mode：Pump inner cavity 80, second shell 2 and third shell are formed in the first embodiment, between first shell 1 and second shell 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 It sets, second 22 middle and upper part for being set to second shell 2 in the present embodiment forms motor between second 22 and third shell 7 Inner cavity 90, forms pump inner cavity 80 between first shell 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 shell 2 includes second 22, does not include first, third shell 7 further include first 21, be equivalent in present embodiment by first in the first embodiment with third shell one at Shape, such first shell 1 are connect with second 22, and third shell 7 is connect by first 21 with second 22, in this way first It is formed between shell 1 and second 22 of second shell 2 and pumps inner cavity 80, first of third shell 7 and the second of second shell 2 Motor cavity 90 is formed between portion 22, prevents external working media from passing through the third shell of embodiment of above and first in this way Junction between portion enters motor cavity, is conducive to the leakproofness for improving motor cavity, and simplify 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 It is 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 Divide internal tooth and tooth engagement outside the part 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 in rotation, outside the part of internal rotor 81 between internal rotor 81 and outer rotor 82 Tooth and tooth engagement in the part of outer rotor 82, to 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 Volume gradually increases to form parital vacuum, 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 to generate the power of flowing.In the present embodiment, 11 He of oil inlet It is provided with the connection of the first connection chamber between pressure chamber 801, the second connection chamber is set between oil outlet 12 and pressure chamber 801, in this way 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, first shell 1 is detachably connected with second shell 2, and second shell 2 and third shell 7 are removable Unload connection；In the present embodiment, first shell 1 and second shell 2 are connected by the first screw 123, and first shell 1 is formed with first Intercommunicating pore 13, second shell 2 are formed with the first threaded hole 231, and the first screw 123 is installed from 1 direction of first shell and with second Shell 2 is threadedly coupled.At least partly the first screw 123 can be dismounted in the outside of shell, and setting in this way makes tearing open for electronic oil pump It fills more convenient, to be conducive to the repair of pump rotor in electronic oil pump, also may be used between certain first shell 1 and second shell 2 To connect in other way, for example dismountable connection type such as grafting, clamping.In order to improve the reliability of connection, the One shell 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 arranged 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 Diameter 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 other component；Certainly the case where the first screw relief portion is arranged in the part of the assembly electronic oil pump of transmission system Under, it may not be necessary to first sink hole 131 is set in the first intercommunicating pore 13, only includes the first through hole 132, can make in this way The first intercommunicating pore closer to the first flange part radial edges or make the first intercommunicating pore and the first flange part edge Distance it is bigger, facilitate the first connection hole arrangement.

Second shell 2 is detachably connected with third shell 7, and specifically, second shell 2 and third shell 7 pass through the second spiral shell 232 connection of nail, third shell 7 are formed with the second intercommunicating pore 73, and second shell 2 is formed with the second threaded hole 241, the second screw 232 install from the direction of third shell 7 and are threadedly coupled with second shell 2.It is of course also possible to which third shell 7 is formed with second Threaded hole, second shell 2 are formed with the second intercommunicating pore, the second screw 232 from the installation of the direction of second shell 2 and with third shell 7 are threadedly coupled.Concrete structure is designed according to the demand of electronic oil pump.Setting keeps the dismounting of electronic oil pump more square in this way Just, to be conducive to the detection and repair of the parts such as circuit board module in electronic oil pump.Certain second shell 2 and third shell 7 can also by grafting, be clamped or wait other dismountable connection types.In order to improve second shell 2 and third shell 7 Connection reliability, and simplify structure, wall thickness of the third shell 7 at the second intercommunicating pore 73 is more than other portions of third shell 7 The wall thickness of position；First 21 of second shell 2 includes that cylindrical portion 201 and the second flange part 24, cylindrical portion 201 are formed with electricity simultaneously 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, second shell 2 can not also include the second flange part, Cylindrical portion is formed with the second threaded hole, in order to ensure that bonding strength, wall thickness of the cylindrical portion at second threaded hole are more than institute State the wall thickness of cylindrical portion other parts.

Referring to Fig. 2 to Figure 11, in present embodiment, first shell 1 includes the first main part 14 and the first flange part 15, the The diameter of one main part 14 be less than the first flange part 15 diameter, first shell 1 include at least 2 the first intercommunicating pores 13, first Intercommunicating pore 13 is distributed along the circumference array of first shell 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 Hole 131 and the first through hole 132, 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 other component.Certain first intercommunicating pore 13 Can be cone shaped countersink or spot facing hole, in this way setting on the one hand can ensure the first screw 123 installation after make electronic oil pump and 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 The minimum range of peripheral surface of the first flange part 15 of edge and first shell 1 be more than or equal to 1mm, being arranged can ensure in this way First intercommunicating pore 13 is not in notch in processing, while will not destroy the peripheral surface of the first flange part 15 of first shell 1； The minimum range of the peripheral surface of the edge of first intercommunicating pore 13 and the first main part 14 is more than or equal to 1mm, and being arranged in this way can be to prevent Only the first intercommunicating pore 13 destroys the peripheral surface of the first main part 14 of first shell 1 in processing.

First shell 1 is also formed with oil inlet 11, oil outlet 12, first is connected to chamber 112 and second and is connected to chamber 121, into The first connection of setting chamber 112 between hydraulic fluid port 11 and pressure chamber 801, is arranged the second connection chamber between oil outlet 12 and pressure chamber 801 121；Chamber 121 is connected to 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 first shell 1, and the first connection chamber 112 is set to first shell 1 The first flange part 15, oil inlet 11 is generally circular, and " generally circular " here refers to circularity within 1mm, certainly into The shapes such as hydraulic fluid port 11 or other shapes, such as ellipse, the first connection chamber 112 are substantially arc-shaped, the first connection chamber 112 include head 1121 and tail portion 1122, and the actual internal area of the first connection chamber 112 gradually increases from head 1121 to tail portion 1122 Add, oil inlet 11 is correspondingly arranged with tail portion 1122, oil inlet 11 with；Cooperation pressure chamber 801 in this way is formed centainly in tail portion 1122 Vacuum degree, be conducive to the sucking of working media.

Second connection chamber 121 is connected to chamber 112 with first and is substantially circumferentially distributed in first shell 1, the center of oil inlet 11 Center with the line at the center of oil outlet 12 substantially Jing Guo first shell, advantageously allows entire electronic oil pump and entirely justifies in this way Week is utilized, and is conducive to the operating pressure for improving the working media by electronic oil pump.

The actual internal area that oil outlet 12 is connected to 112 junction of chamber with second is more than second other positions for being connected to chamber 112 Actual internal area, setting in this way advantageously allows to enter the working media of the second connection chamber 112 from pressure chamber 801 and arranges as early as possible Go out.

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

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

First 21 includes cylindrical portion 201 and the second flange part 24, and 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 arranged far 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 first shell 1 Hole 13 and the first threaded hole 231 of second shell 2 are correspondingly arranged, and first shell 1 is connected with second shell 2 by the first screw 123 It connects；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 third shell 7 Setting, second shell 2 is connect with third shell 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, in this way Be conducive to improve bonding strength, and the integral thickness and weight of second shell 2 will not be increased, advantageously reduces cost.Certainly, When the thickness of the second flange part 24 of second shell 2 is sufficiently thick, the first lug boss can not also be arranged in the second flange part 24 242, " 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 partly radiating part is correspondingly arranged with motor cavity 90, for being set to 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 second shell 2 is metal material, is conducive to improve thermal conductivity, specifically, In present embodiment, the material of second shell 2 is aluminium, and second shell 2 includes multiple first radiating parts 26, in the present embodiment, the 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 and the surface area ratio for the cylindrical portion that the first radiating part is not arranged that the cylindrical portion of the first radiating part is arranged are more than or equal to 1, the first radiating part 26 is substantially evenly distributed along the outer wall of at least partly cylindrical portion 201.

First radiating part 26 includes the groove for forming in cylindrical portion, not only increases heat dissipation area in this way, and make 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 The 261 central axis settings far from electronic oil pump, crest portion 262 are connect with trough portion 261 by a transition part transition；It is such Each portion of structure of first radiating part 26, which is all made of, to be seamlessly transitted, and appearance is relatively beautiful while improving thermal diffusivity；Certain first Radiating part 26 may be multiple continuous protrusions using the bottom 261 of groove as benchmark, relative to the first radiating part is not arranged 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 shells and then the intensity for ensureing second shell 2.In the present embodiment, second shell 2 is indulged in an axial direction A longitudinally cutting face is obtained to cutting, the cross sectional shape in the longitudinally cutting face of the first radiating part 26 is substantially at trapezoidal, certainly, first The cross sectional shape in the longitudinally cutting face of radiating part 26 may be the other shapes such as rectangle or triangle.

In conjunction with 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, in this way 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 second shell 2；Setting can ensure stator module in this way 4 at work heat caused by coil can shed uniformly across the first radiating part 26 so that stator module 4 dissipates Heat is more efficient.

Second shell 2 further includes second groove 27 and third groove 28, and in conjunction with Fig. 1, electronic oil pump 100 further includes second close Seal 30 and third sealing ring 40, the second sealing ring 30 are set in the second groove 27 of second shell in Figure 10, third sealing Circle 40 is set in the third groove 28 of second shell in Figure 10, and setting in this way can be formed with transmission system and is tightly connected.

In conjunction with Fig. 2, electronic oil pump 100 further includes the first support portion 29, and the first support portion 29 can be directly or indirectly to pass Moving axis 5 plays the role of support, and referring to Figure 15, in the present embodiment, the first support portion 29 is integrally machined with second shell 2, It is specifically 22 integrally formed with second.

Second shell 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 support portion 29, and the first support portion 29 includes being formed from second 22 to motor cavity Annular relief.

Figure 15 is the first embodiment of second shell, and first is supported in by first bearing 60 in conjunction with Fig. 2 transmission shafts 5 The inner circumferential of support portion 29, first bearing 60 is contacted with the peripheral surface of transmission shaft 5, the periphery of first bearing 60 and the first support portion 29 Inner circumferential contact；

It is provided with intercommunicating pore 2933 for second 22, intercommunicating pore 2933 is connected to the first chamber 291 and the second chamber 292, and transmission shaft 5 is logical It crosses intercommunicating pore 2933 and stretches 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 peripheral surface of transmission shaft 5, outside oil sealing 50 Week contacts with the first support portion 29.

Figure 18 is second of embodiment of second shell, and transmission shaft 5 is supported directly upon the first support portion 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 support portion is provided with lubrication groove 298, improves profit It is sliding.In present embodiment, second shell 2 ' shapes the first support portion 29 ', and setting in this way can reduce by a first bearing, directly The first support portion is used to keep the structure of electronic oil pump compacter as the support of transmission shaft one end.

Electronic oil pump 100 further includes the second support portion 208, and the second support portion 208 is that transmission shaft 5 provides second support, First support portion 29 and the coaxial arrangement of the second support portion 208, improve the stability of the support of transmission shaft 5.

Electronic oil pump 100 further includes partition board 9, and partition board 9 is set to motor cavity 90, the second support portion 208 and 9 one of partition board Forming.

Transmission shaft 5 is supported in the second support portion 208 by second bearing 70, and the second support portion 208 includes from partition board 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 of second support portion 208 contacts.

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

Referring to Figure 30 to Figure 33, partition board 9 includes the first lug boss 91, the first bottom 92, the second lug boss 94, reinforcing rib 93；Second support portion 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, in this way setting can ensure the mechanical strength of the first lug boss 91, to make It obtains 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 be Other shapes, for example rectangle or the shapes such as trapezoidal.Second lug boss 94 is relative to the first lug boss 91 closer to the outer rim of partition board 9 Setting, 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 support portion 208 is fixedly connected with second shell 2, specifically, in conjunction with Figure 33 and Figure 15, the second lug boss 94 and second The inner circumferential interference fit connection of the cylindrical portion of shell 2, certainly, can also pass through screw or bolt between partition board 9 and second shell 2 Or the mode of riveting connection, peripheral surface and the interference fit of second shell 2 of the first bottom 92 of partition board 9 connect.Partition board 9 is also at least Including two third protrusion portions 95, third protrusion portion 95 is axially extending to the direction far from the first lug boss 91, in the present embodiment, Second support portion 9 includes 3 third protrusion portions 95, and third protrusion portion 95 substantially circumferentially array distribution or is uniformly distributed, third Lug boss 95 is provided centrally with threaded hole 951.Interconnecting piece includes the second lug boss 94.

Referring to Figure 15, second shell 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 set to the second chamber 292 of second shell 2, and first step portion 294 can make For the stator module 4 in Fig. 1 the transmission axis direction of electronic oil pump limit；Second shell 2 further includes second step portion 295, Second step portion 295 includes third confined planes 2951 and the 4th confined planes 2952, and second step 295 is more than first step portion 294 Close to the second flange part 24 setting of second shell 2, the stator module 4 in Fig. 2 is connected with the interference fit of second shell 2, specifically Ground, the outer wall of stator module 4 and second confined planes 2942 in at least partly first step portion 294 of second shell 2 are interference fitted Connection, first confined planes 2941 in first step portion 294 are abutted with stator module 4, to realize first step portion 294 to Fig. 1 Middle stator module 4 the transmission axis direction of electronic oil pump limit, to be conducive to the limit of stator module.

Referring to Figure 19 to Figure 23, third shell 7 includes ontology 71 and interconnecting piece 72, the face on the basis of ontology 71, interconnecting piece 72 are located at the lower section of ontology 71, and third shell 7 is formed with the second intercommunicating pore 73, the second intercommunicating pore 73 and the second of second shell 2 Threaded hole 241 is correspondingly arranged, and in the present embodiment, second shell 2 is connect with third shell 7 by the second screw 232, also may be used certainly With by other connection types, for example connection types such as grafting, clamping or welding；Referring to Figure 23, interconnecting piece 72 includes first Shell limiting section 76, the height of the second shell limiting section 243 of second shell 2 in the height H2 and Figure 15 of first shell 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 being arranged can use up in this way Amount ensures that third shell 7 is bonded as possible with the contact surface of second shell 2, ensures that third shell will not incline in assembling process Tiltedly, to avoid the grafting to plug receptacle and connector from impacting.Third shell 7 is also formed with mounting hole 77, mounting hole 77 For being connect with gearbox or driving unit, the present embodiment includes two mounting holes 77.

It is the structural schematic diagram of the first embodiment of third shell, third shell referring to Figure 19 to Figure 23, Figure 19 to Figure 23 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 are noted with 7 one of third shell It is moulded into type, in the present embodiment, radiating ribs is set as much as possible on third shell, to increasing heat radiation area, be 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 other shapes, the other shapes such as 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 In the process, 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 may be other quantity；In the present embodiment, outer rotor 82 is different from internal rotor 81 The heart and there are certain eccentricity, setting in this way can ensure in the part external tooth 811 of internal rotor 81 and the part of outer rotor 82 Tooth 821 can keep meshing state when pump rotor 8 rotates, and to make the volume of pressure chamber 801 change, be conducive to work The sucking and extrusion of medium.

Internal rotor 81 further includes an interconnecting piece 812, and interconnecting piece 812 is formed with connecting hole, and interconnecting piece 812 includes at least one First limiting section 8121, in the present embodiment, interconnecting piece 812 includes two planar portions and two cambered surface portions, wherein the first limiting section 8121 be planar portions, and connecting hole is in substantially long trough, and certainly, interconnecting piece 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 at D-shaped；Interconnecting piece 812 or other structures connect certainly Hole may be other shapes, for example interconnecting piece 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.

In conjunction with referring to 12 and 29a to Figure 29 c, transmission shaft 5 include the first shaft part 51, the second shaft part 52, third 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 third shaft part 53, the One shaft part 51 includes axle journal 512 and spindle nose 511, and 512 connectiing shaft head 511 of axle journal and the second shaft part 52, spindle nose 511 include at least one A second limiting section 5111, the second shaft part 52 connects third shaft part 53 and the first shaft part 5 is arranged, 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 setting in this way can make transmission shaft be more easy to realize assembly 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 part third shaft part 53 of transmission shaft 5 contacts and is supported on the inner circumferential of second bearing 70 Second support portion 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.

First 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 first bearing 60, in axial direction, first bearing is limited in the first support portion 29；Second bearing 70 is sheathed on At the third 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 is separately connected the both ends of the first planar portions 501 and the second planar portions 502；The interconnecting piece of internal rotor includes connecting hole, even With setting, spindle nose 511 is inserted into connecting hole, the first planar portions and the second planar portions and connect for the shape of interface and the shape shape of spindle nose The side wall of the corresponding connecting hole in portion is interference fitted, the side wall for being correspondingly connected with hole in the first cambered surface portion and the second cambered surface portion and interconnecting piece Clearance fit, such transmission shaft assemble more convenient with interconnecting piece.

In conjunction with referring to Fig. 2 and Figure 34 to Figure 38, circuit board module 6 includes circuit board 61, electronic component and installation Holder 10, mounting bracket 10 are set between circuit board 61 and partition board 9.Mounting bracket 10 is fixedly connected with partition board 9, specifically, Mounting bracket 10 by screw or is bolted with partition board 9, and certainly, mounting bracket 10 can also be by others even with partition board 9 The mode of connecing connects, for example other connection types such as riveting connection；Mounting bracket 10 is electrically connected with circuit board 61, mounting bracket 10 The electronic component that large volume can be carried, in conjunction with 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 side 1022, collet portion 1021 and side 1022 form accommodating chambers, and in the present embodiment, accommodating chamber setting is there are one the electronic component of 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 and side 1022 of setting can be conducive to the circumferential direction of bulky capacitor 101 Positioning, 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 On one side 1031, during bulky capacitor 101 is packed into receiving portion 102, bulky capacitor 101 first with the first face 1031 of clamping part 103 Contact, the peripheral 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, part force effect is had on the first face 1031, to make clamping part 103 be 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 be restored to initial position in the clamping part 103 of open configuration, in this way setting on the one hand bulky capacitor can be ensured vertical It will not be moved on direction, the dismounting of bulky capacitor is on the other hand made to become simpler, improve the disassembly efficiency of bulky capacitor. Mounting bracket 10 further includes including at least two through-holes 104, and through-hole 104 substantially circumferentially array distribution or is uniformly distributed, this reality It applies in example, the quantity of the threaded hole 951 in the quantity of through-hole 104 and 9 third protrusion portions 95 of partition board is roughly equal, specifically, peace It includes 3 through-holes 104, the quantity of the quantity of through-hole 104 and the threaded hole in 9 third protrusion portion 95 of the second support portion to fill holder 10 951 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 detailed description 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 to the utility model Or equivalent replacement, 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 (18)

1. a kind of electronic oil pump, including shell, pump rotor, transmission shaft, rotor, stator module and circuit board module, institute It states shell and includes at least first shell, second shell and third shell, shape between the first shell and the second shell At pump inner cavity, motor cavity is formed between the second shell and the third shell, the pump rotor is placed in the pump Chamber, the rotor, the stator module and the circuit board module are placed in the motor cavity, the electronic oil pump Further include oil inlet and oil outlet, the pump inner cavity is connected to the oil inlet and the oil outlet, the pump inner cavity and described Motor cavity is not connected to.

2. electronic oil pump according to claim 1, it is characterised in that：The pump rotor, the rotor and described For circuit board module along the axial arranging of the electronic oil pump, the rotor is set to the pump rotor and the circuit board group Between part.

3. electronic oil pump according to claim 2, it is characterised in that：The pump inner cavity, institute are stretched into described transmission shaft one end The other end for stating transmission shaft stretches into the motor cavity, and the pump rotor is set to described transmission shaft one end, the rotor Be set to the other end of the transmission shaft, the circuit board module close to the transmission shaft for being equipped with the rotor one End setting.

4. electronic oil pump according to any one of claims 1 to 3, it is characterised in that：The electronic oil pump further includes first Support portion and the second support portion and partition board, the partition board are set to motor cavity, first support portion and the second shell Body is integrally formed, and second support portion and the partition board are integrally formed, and the transmission shaft is directly or indirectly supported in described One support portion and second support portion, first support portion and the setting of second support portion interval.

5. electronic oil pump according to any one of claims 1 to 3, it is characterised in that：The circuit board module includes circuit Plate, electronic component and mounting bracket, the electronic component include the electronic component of large volume, the electricity of the large volume Sub- component is fixed by the mounting bracket, and the electronic oil pump includes partition board, and the partition board is set to the motor cavity, The mounting bracket is set between the circuit board and the partition board.

6. electronic oil pump according to claim 4, it is characterised in that：The circuit board module includes circuit board, electronics member Device and mounting bracket, the electronic component include the electronic component of large volume, the electronic component of the large volume It is fixed by the mounting bracket, the mounting bracket is set between the circuit board and the partition board.

7. electronic oil pump according to claim 5, it is characterised in that：The electronic oil pump includes radiating part, at least partly The radiating part is correspondingly arranged with the motor cavity.

8. electronic oil pump according to claim 6, it is characterised in that：The electronic oil pump includes radiating part, at least partly The radiating part is correspondingly arranged with the motor cavity.

9. according to the electronic oil pump described in claims 1 or 2 or 3 or 6 or 7 or 8, it is characterised in that：The first shell and institute It states second shell to be detachably connected, the second shell and the third shell are detachably connected.

10. electronic oil pump according to claim 4, it is characterised in that：The first shell and the second shell are removable Connection is unloaded, the second shell and the third shell are detachably connected.

11. electronic oil pump according to claim 5, it is characterised in that：The first shell and the second shell are removable Connection is unloaded, the second shell and the third shell are detachably connected.

12. according to the electronic oil pump described in claims 1 or 2 or 3 or 6 or 7 or 8 or 10 or 11, it is characterised in that：The electronics Oil pump includes outer seal portion, and the outer seal portion includes being sheathed on the first sealing ring of the second shell peripheral surface and second close Seal, first sealing ring are arranged close to the first shell, and second sealing ring is arranged close to the third shell.

13. electronic oil pump according to claim 4, it is characterised in that：The electronic oil pump includes outer seal portion, described outer Sealing includes the first sealing ring and the second sealing ring for being sheathed on the second shell peripheral surface, and first sealing ring is close The first shell setting, second sealing ring are arranged close to the third shell.

14. electronic oil pump according to claim 5, it is characterised in that：The electronic oil pump includes outer seal portion, described outer Sealing includes the first sealing ring and the second sealing ring for being sheathed on the second shell peripheral surface, and first sealing ring is close The first shell setting, second sealing ring are arranged close to the third shell.

15. electronic oil pump according to claim 9, it is characterised in that：The electronic oil pump includes outer seal portion, described outer Sealing includes the first sealing ring and the second sealing ring for being sheathed on the second shell peripheral surface, and first sealing ring is close The first shell setting, second sealing ring are arranged close to the third shell.

16. electronic oil pump according to claim 12, it is characterised in that：The pump rotor includes internal rotor and outer rotor, The pressure chamber of variable volume is formed between the outer rotor and internal rotor, the electronic oil pump further includes the first connection chamber and second It is connected to chamber, the first connection chamber is set between the oil inlet and the pressure chamber, and the second connection chamber is set to institute It states between oil outlet and the pressure chamber.

17. according to claim 13 to 15 any one of them electronic oil pump, it is characterised in that：The pump rotor includes internal rotor And outer rotor, the pressure chamber of variable volume is formed between the outer rotor and internal rotor, the electronic oil pump further includes the first company Cavity and the second connection chamber, the first connection chamber are set between the oil inlet and the pressure chamber, second connection Chamber is set between the oil outlet and the pressure chamber.

18. electronic oil pump according to claim 1, it is characterised in that：The pump rotor, the rotor and described For circuit board module along the axial arranging of the electronic oil pump, the rotor is set to the pump rotor and the circuit board group Between part；The pump inner cavity is stretched into described transmission shaft one end, and the other end of the transmission shaft stretches into the motor cavity, the pump Rotor is set to described transmission shaft one end, and the rotor is set to the other end of the transmission shaft, the circuit board module Close to the setting of the one end for the transmission shaft for being equipped with the rotor；The electronic oil pump further includes the first support portion and Two support portions and partition board, the partition board are set to motor cavity, and first support portion and the second shell are integrally formed, Second support portion and the partition board are integrally formed, and the transmission shaft is directly or indirectly supported in first support portion and institute State the second support portion, first support portion and the setting of second support portion interval；The circuit board module include circuit board, Electronic component and mounting bracket, the electronic component include the electronic component of large volume, the electronics of the large volume Component is fixed by the mounting bracket, and the mounting bracket is set between the circuit board and the partition board；The electricity Seed oil pump includes radiating part, and at least partly described radiating part is correspondingly arranged with the motor cavity；The first shell with it is described Second shell is detachably connected, and the second shell and the third shell are detachably connected；The electronic oil pump includes outer close Envelope portion, the outer seal portion include being sheathed on the first sealing ring and the second sealing ring of the second shell peripheral surface, and described One sealing ring is arranged close to the first shell, and second sealing ring is arranged close to the third shell；The pump rotor packet Internal rotor and outer rotor are included, forms the pressure chamber of variable volume between the outer rotor and internal rotor, the electronic oil pump also wraps The first connection chamber and the second connection chamber are included, the first connection chamber is set between the oil inlet and the pressure chamber, described Second connection chamber is set between the oil outlet and the pressure chamber；The oil inlet and the oil outlet may be contained within described First shell, the oil inlet and the oil outlet are set to the same side of the first shell；The oil inlet is along the electricity The axial setting of seed oil pump, radial direction setting of the oil outlet along the electronic oil pump.