CN208571776U

CN208571776U - Electronic oil pump

Info

Publication number: CN208571776U
Application number: CN201820799149.4U
Authority: CN
Inventors: 不公告发明人
Original assignee: Hangzhou Sanhua Research Institute Co Ltd
Current assignee: Zhejiang Sanhua Intelligent Controls Co Ltd
Priority date: 2018-05-28
Filing date: 2018-05-28
Publication date: 2019-03-01
Anticipated expiration: 2028-05-28

Abstract

A kind of electronic oil pump, including pump case, the first rotor component, stator module, the second rotor assembly and electric-controlled plate component, pump case is capable of forming pump inner cavity, and electronic oil pump includes bottom cover, and bottom cover includes main part and the first lug boss, main part and the forming of the first lug boss integrated injection molding, bottom cover includes the first receiving portion, and the first receiving portion is capable of forming the first accommodating chamber, and the first receiving portion of part forms in the first lug boss, electric-controlled plate component includes capacitor, and at least partly capacitor is set to the first accommodating chamber；First receiving portion includes the first side wall and second sidewall, and the first side wall second sidewall is oppositely arranged, and the first side wall is arranged than second sidewall closer to the edge of bottom cover, and the thickness of the first side wall is less than the thickness of second sidewall；The deformation that bottom cover is occurred in injection molding process is advantageously reduced, to be conducive to the assembly of bottom cover.

Description

Electronic oil pump

[technical field]

The utility model relates to a kind of vehicular field more particularly to a kind of pump installations.

[background technique]

Vehicle Industry is grown rapidly, with vehicle 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/or cooling system, and can be well Meet the requirement in market.

Electronic oil pump is mainly that the lubricating system of vehicle and/or cooling system provide power source, and electronic oil pump includes bottom cover With electric-controlled plate component, bottom cover can cover electric-controlled plate component, when bottom cover is moulding, can exist because of unreasonable structural design And bottom cover is caused to deform in injection molding process, to influence the assembly of bottom cover.

[utility model content]

The purpose of this utility model is to provide a kind of electronic oil pumps, advantageously reduce bottom cover institute in injection molding process The deformation of generation, to be conducive to the assembly of bottom cover.

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 pump case, the first rotor component, stator module, the second rotor assembly and electric-controlled plate Component, the pump case are capable of forming pump inner cavity, and the pump inner cavity includes the first chamber and the second chamber, and the first rotor component is set It is placed in first chamber, the stator module and second rotor assembly are set to second chamber, and the pump case includes Electric machine casing, the electronic oil pump include bottom cover, and the bottom cover is fixedly connected with the electric machine casing and is formed third chamber, described Electric-controlled plate component is set to the third chamber, and the bottom cover includes main part and the first lug boss, the main part and described The forming of one lug boss integrated injection molding, the main part includes first surface and second surface, the first surface and described second Surface opposite setting, first lug boss are arranged from the first surface to the direction protrusion far from the first surface, institute Stating bottom cover includes the first receiving portion, and first receiving portion is capable of forming the first accommodating chamber, and first accommodating chamber is from described the Two surfaces are shaped to the top depression of first lug boss, and part first accommodating chamber forms in first lug boss, The electric-controlled plate component includes one or more capacitors, and a part of at least each capacitor is contained in described first and accommodates Chamber；First receiving portion includes the first side wall and second sidewall around first accommodating chamber, the first side wall with it is described Second sidewall defines a section in planar, and the section is perpendicular to first surface and the section is perpendicular to the first side wall or the The medial surface intersection of two side walls, the section and the first side wall is the first intersection, the section and the medial surface of the second sidewall Intersection is the second intersection, and the intersection of the periphery of the section and bottom cover is third intersection and the 4th intersection, by first intersection, the Two intersections, third intersection and the 4th intersection are projected to the second surface, obtain the first intersection point, the second intersection point, third intersection point And the 4th intersection point, take the midpoint of the third intersection point and the 4th intersection point line to be defined as first nodal point, the third Intersection point and first intersection point are located at the side of the first nodal point, and the 4th intersection point is located at the another of the first nodal point Side, the distance of first intersection point to the first nodal point be greater than second intersection point to the first nodal point away from From the distance of first intersection point to the third intersection point is less than the distance of second intersection point to the 4th intersection point.

Electronic oil pump includes bottom cover, and bottom cover includes main part and the first lug boss, and main part and the first lug boss are integrally infused It is moulded into shape, bottom cover includes the first receiving portion, and the first receiving portion is capable of forming the first accommodating chamber, and the first receiving portion of part forms in the One lug boss, the first receiving portion include the first side wall and second sidewall, and the first side wall is oppositely arranged with second sidewall, define one section Face, the section is perpendicular to first surface and the section is perpendicular to the first side wall or second sidewall, the section and the first side wall Medial surface intersection is the first intersection, and the intersection of the medial surface of the section and the second sidewall is the second intersection, the section and bottom The intersection of the periphery of lid is third intersection and the 4th intersection, and first intersection, the second intersection, third intersection and the 4th are handed over Line is projected to the second surface, obtains the first intersection point, the second intersection point, third intersection point and the 4th intersection point, and the third is taken to hand over The midpoint of point and the 4th intersection point line is defined as first nodal point, and the third intersection point and first intersection point are located at described The side of first nodal point, the 4th intersection point are located at the other side of the first nodal point, first intersection point to described The distance of one central point is greater than the distance of second intersection point to the first nodal point, and first intersection point to the third is handed over The distance of point is less than the distance of second intersection point to the 4th intersection point, and setting in this way advantageously reduces bottom cover in injection moulding process Middle deformation occurred, and then be conducive to the assembly of bottom cover.

[Detailed description of the invention]

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

Fig. 2 is a positive structure diagram of the part-structure of the electronic oil pump of unassembled pump cover in Fig. 1；

Fig. 3 is the schematic perspective view after bottom cover and contact pin are combined in Fig. 1 in the first direction；

Fig. 4 is the schematic perspective view after bottom cover and contact pin are combined in Fig. 1 in a second direction；

Fig. 5 is the schematic perspective view after bottom cover and contact pin are combined in Fig. 1 on third direction；

Fig. 6 is that bottom cover and contact pin combine the latter positive structure diagram in Fig. 3 or Fig. 4 or Fig. 5；

Fig. 7 is a schematic diagram of the section structure after bottom cover and contact pin are combined in Fig. 6 along Section A-A；

Fig. 8 is a schematic diagram of the section structure after bottom cover and contact pin are combined in Fig. 6 along section B-B；

Fig. 9 is the partial enlargement structural representation that bottom cover and contact pin combine the rear portion A in Fig. 4；

Figure 10 is a schematic perspective view of metal inserted piece in Fig. 1；

Figure 11 is a schematic diagram of the section structure of metal inserted piece in Figure 10；

Figure 12 is that bottom cover in Fig. 1, contact pin and metal inserted piece combine the latter positive structure diagram；

Figure 13 is a cross-section structure after bottom cover and contact pin and metal inserted piece are combined in Figure 12 along the section C-C Schematic diagram；

Figure 14 is a schematic perspective view of electric-controlled plate component in Fig. 1；

Figure 15 is that one after bottom cover and contact pin are combined in Fig. 5 faces structure schematic diagram.

[specific embodiment]

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

Electronic oil pump in the present embodiment can mainly provide for the working media of vehicle lubricating system and/or cooling system The power of flowing specifically can provide flowing for the working media of lubricating system and/or cooling system in vehicle drive system Power.

Referring to Fig. 1, electronic oil pump 100 include pump case, the first rotor component 2, stator module 4, the second rotor assembly 3 with And electric-controlled plate component 6；Pump case be capable of forming pump inner cavity, the first rotor component 2, stator module 4, the second rotor assembly 3 and Electric-controlled plate component 6 is placed in pump inner cavity, and in the present embodiment, pump case is capable of forming pump inner cavity, and pump inner cavity includes the first chamber 80 and the Two chambers 90, the first chamber 80 and the second chamber 90 can be connected to setting or not be connected to setting, and the first rotor component 2 is set to the first chamber 80, stator module 4, the second rotor assembly 3 are set to the second chamber 90；Stator module 4 includes stator core 41 and coil 42, electronics When oil pump 100 works, the electric current in coil 42 that electric-controlled plate component 6 passes through stator module 4 by control is according to scheduled rule Variation, to control the excitation field that stator module 4 generates variation, the second rotor assembly 3 turns under the action of excitation field Dynamic, the second rotor assembly 3 can directly or indirectly drive the first rotor component 2 to rotate, when the first rotor component 2 rotates, the The volume of hydraulic cavities between one rotor assembly 2 changes, so that working media is pressed out to outflow port to generate flowing Power.

Referring to Fig. 1, in the present embodiment, pump case includes pump cover 1, electric machine casing 7 and bottom cover 8, pump cover 1, electric machine casing 7 with And the relatively fixed connection of bottom cover 8, bottom cover 8 can cover electric-controlled plate component 6；Specifically, in the present embodiment, pump cover 1 and motor casing For body 7 by screw or being bolted, be arranged keeps the dismounting of electronic oil pump more convenient in this way, to be conducive to the of electronic oil pump The maintenance of one rotor assembly 2, certain pump cover 1 can also be connect in other way with electric machine casing 7, for example grafting, clamping Etc. modes；Electric machine casing 7 is fixedly connected with bottom cover 8, and specifically, electric machine casing 7 by screw or is bolted with bottom cover 8, this On the one hand sample setting keeps the dismounting of electronic oil pump more convenient, in the present embodiment, since electric-controlled plate component 6 is set to electric machine casing Between 7 and bottom cover 8, this also have the advantage that the maintenances of electric-controlled plate component in electronic oil pump, on the other hand can also make electric machine casing 7 It is more reliable with the connection of bottom cover 8；Certain electric machine casing 7 and bottom cover 8 can also by grafting, be clamped or wait other connection sides Formula.

Referring to fig. 2, the first rotor component 2 includes the first rotor 21 and the second rotor 22, and the first rotor 21 includes in multiple Tooth, the second rotor 22 include multiple external tooths, are formed with hydraulic cavities between the internal tooth of the first rotor 21 and the external tooth of the second rotor 22 801, in the present embodiment, hydraulic cavities 801 are also a part of the first chamber 80, and in the present embodiment, the first rotor 21 is sheathed on second The periphery of rotor 22.Referring back to Fig. 1, electronic oil pump further includes flow inlet 11 and outflow port 12, and working media can pass through influent stream Mouth 11 enters hydraulic cavities 801, and working media can leave hydraulic cavities 801 by outflow port 12；Due to the first rotor 21 and second There are certain eccentricities between rotor 22, and the second rotor 22 is in rotation, the part external tooth and the first rotor of the second rotor 22 Tooth engagement in 21 part revolves the mistake to turn around in the first rotor 21 and the second rotor 22 so that the first rotor 21 be driven to rotate Cheng Zhong, 801 internal volume of hydraulic cavities change, specifically, when the first rotor component 2 turns to a certain angle from section start, Volume in hydraulic cavities 801 is gradually increased to form parital vacuum, and working media is just sucked into hydraulic cavities from flow inlet 11 801, when the first rotor 21 and the second rotor 22 continue to rotate, originally 801 volume of hydraulic cavities full of working media gradually subtracts Small, working media is squeezed, so that being pressed out to outflow port 12 into the working media in hydraulic cavities 801 to generate The power of flowing；In the present embodiment, electronic oil pump 100 further includes pump shaft 9, and pump shaft 9 is able to drive part the first rotor component 2 Rotation, specifically, in the present embodiment, pump shaft 9 is able to drive the second rotor 22 and rotates, in the present embodiment, pump shaft 9 and the second rotor 22 connections, pump shaft 9 are connect with the second rotor assembly 3, and the second rotor assembly 3 drives the rotation of the second rotor 22 by pump shaft 9, thus Realize the rotation of the first rotor component 2.

Referring to Fig. 3 to Fig. 4, bottom cover 8 includes main part 81 and the first lug boss 82, main part 81 and the first lug boss 82 Integrated injection molding forming, main part 81 include first surface 811 and second surface 812, first surface 811 and 812 phase of second surface Back setting, the first lug boss 82 is arranged from first surface 811 to the direction protrusion far from first surface 811, referring to Fig. 5, bottom cover 8 include the first receiving portion 821, and the first receiving portion of part 821 forms in the first lug boss 82, and the first receiving portion 821 is capable of forming First accommodating chamber 8211, referring to Figure 14, electric-controlled plate component 6 includes capacitor 61, in conjunction with Fig. 1, at least a part setting of capacitor 61 In the first accommodating chamber 8211；Referring to Fig. 3, Fig. 5, Fig. 7 and Figure 15, the first receiving portion 821 includes the first side wall 822 and second side Wall 823, the first side wall 822 and second sidewall 823 define a section 70, the section 70 is perpendicular to first surface in planar 811 and the section perpendicular to the first side wall 822 or second sidewall 823, the medial surface 8221 of the section 70 and the first side wall is handed over Line is the first intersection, and the intersection of the medial surface 8231 of the section 70 and second sidewall is the second intersection, the section 70 and bottom cover 8 The intersection of periphery is third intersection and the 4th intersection, by the first intersection, the second intersection, third intersection and the 4th intersection to bottom cover Second surface 812 project, obtain the first intersection point O1, the second intersection point O2, third intersection point O3 and the 4th intersection point O4, take described the The midpoint of three intersection point O3 and the 4th intersection point O4 line is defined as first nodal point C1, third intersection point O3 and the first intersection point O1 and is located at The side of first nodal point C1, the 4th intersection point O4 are located at the other side of first nodal point C1, the first intersection point O1 to first nodal point The distance of C1 is greater than the distance of the second intersection point O2 to first nodal point C1, and the distance of the first intersection point C1 to third intersection point O3 is less than the The distance of two intersection point O2 to the 4th intersection point O4, the thickness a of the first side wall 822 are less than the thickness b of second sidewall 823.The present embodiment In, the first side wall 822 is arranged in parallel with second sidewall 823, and " the first side wall 822 is arranged in parallel with second sidewall 823 " is here Refer on the basis of the first side wall 822, the parallelism tolerance value of second sidewall 823 is within 2mm range, or with second sidewall On the basis of 823, the parallelism tolerance value of the first side wall 822 is within 2mm range, in the present embodiment, the first side wall 822 to the Two side walls 823 are arranged closer to the edge of bottom cover 8, and the thickness a of the first side wall 822 is less than the thickness b of second sidewall 823；By It is arranged in the first side wall 822 of the first lug boss 82 than the outer edge of second sidewall 823 closer to bottom cover 8, i.e. the first lug boss 82 are not disposed on the central side of bottom cover 8, referring to Fig. 3, the central axis setting to the left of the opposite bottom cover 8 of the first lug boss 82, usually In Shooting Technique, a cast gate is had for feeding, for being formed with the bottom cover of the first lug boss 82, usual cast gate can be arranged in On die location corresponding to the cavity of first lug boss 82, referring to Fig. 3 and Fig. 5, just to bottom cover by the cast gate on injection mold Projection obtains the cast gate projection 14 in Fig. 5, defines a plane, above-mentioned plane and the first side wall 822 of bottom cover 8 are parallel and above-mentioned The central axis of plane and cast gate projection 14, divides bottom cover 8 for two parts from above-mentioned plane, respectively first part and the Two parts, 822 place side of the first side wall are first part, and 823 place side of second sidewall is second part, due to the first side wall 822 than second sidewall 823 closer to bottom cover 8 outer edge be arranged so that the distal-most edge distance of the first part of bottom cover 8 Cast gate is closer, the distal-most edge of second part apart from cast gate farther out, at this time if the wall of the first side wall 822 and second sidewall 823 It is thick equal, then cause in injection moulding process, first completes the casting of first part, the opposite first part of casting of second part pours Note has certain lag, and first part is different with the shrinking percentage of second part after shaping so as to cause bottom cover 8, so that bottom Lid 8 at the first part with second part caused by deflection it is different so that bottom cover deforms in injection moulding process, And in this implementation, the thickness a of the first side wall 822 is less than the thickness b of second sidewall, is arranged in this way so that in injection moulding process, energy Cast gate is to aisle spare is formed by enough opposite raising mold cavities between second part, compared to the wall of the first side wall 822 It is thick it is equal with the wall thickness of second sidewall 823 in the case where, in this way can with respect to the mobility of reinforced plastics in the second portion, To which the opposite plastics that shorten flow into the duration of pouring of second part from cast gate, and then be conducive to balance plastics from cast gate casting the The time of a part and plastics are from the time of cast gate casting second part, to advantageously reduce the institute in injection moulding process of bottom cover 8 The deformation of generation, and then be conducive to the assembly of bottom cover 8.Specifically, referring to Fig. 7, in the present embodiment, second sidewall 823 is greater than the 822 thickness of one side wall and the thickness of second sidewall 823 are less than or equal to 1.5 times of 822 thickness of the first side wall, so on the one hand such as The deformation described above that can reduce bottom cover 8 and occurred in injection moulding process, on the other hand, the thickness of second sidewall 823 is too big The weight that will lead to bottom cover increases and if the thickness of the first side wall 822 and the thickness of second sidewall 823 differ too big and can lead Cause the deformation at above-mentioned second part is opposite to increase.

Referring to Fig. 5 and Fig. 8, bottom cover 8 includes the second lug boss 83, and at least partly described second lug boss 83 is set to the One accommodating chamber 8211, direction protrusion setting of second lug boss 83 from the bottom surface of the first receiving portion 821 to second surface 812, the Two lug bosses 83 include the second receiving portion 831, and the second receiving portion 831 is capable of forming the second accommodating chamber 8311, in conjunction with Fig. 1 and Fig. 8, Electronic oil pump 100 includes contact pin 10, and contact pin 10 includes our department 102, first connecting portion 101 and second connecting portion 102, our department 102 It is set between first connecting portion 101 and second connecting portion 102, first connecting portion 102 stretches out the second lug boss 83, the second connection Portion 103 is set to the second accommodating chamber 8311, at least partly our department 102 of contact pin 10 and 83 close-fitting of the second lug boss or at least Our department 102 of part contact pin 10 and the injection molding of the second lug boss 83 are fixed, and are inserts with contact pin 10 in the present embodiment specifically, until 83 integrated injection molding of our department 102 and the second lug boss of small part contact pin 10；In the present embodiment, the first connection of contact pin 10 Portion 101 is electrically connected with the electric-controlled plate component 6 in Fig. 1, and the second connecting portion 102 of contact pin 10 (can not be schemed with external connector Show) electrical connection, external power supply, signal transmission and feedback etc. to electric-controlled plate component is completed to realize.

Referring to Fig. 5 and Fig. 8, bottom cover 8 includes protruding portion 84, and protruding portion 84 is from the top surface 832 of the second lug boss 83 to separate The top surface 832 of second lug boss 83 is provided projectingly, 83 integrated injection molding of protruding portion 84 and the second lug boss, and contact pin 10 passes through prominent The bottom surface 8312 of the top surface 841 in portion 84 and the second receiving portion 831 out；Referring to Fig. 5, in the present embodiment, the width W2 of protruding portion 84 Less than the thickness that the width W1 of the second lug boss 83 is greater than contact pin 10, the weight of bottom cover is advantageously reduced in this way, here " protruding portion 84 width W2 " refers to the minimum range between 84 two sidewalls of protruding portion, and " the width W1 of the second lug boss 83 " refers to here Minimum range between two lug bosses, 83 two sidewalls, the width W2 of certain protruding portion 84 can also be equal to the width of the second lug boss 83 Spend the thickness that W1 is greater than contact pin 10；In the present embodiment, by be arranged protruding portion 84 enable to our department 102 of part contact pin 10 with Protruding portion 83 is fixedly connected, and contact pin can be made to fix in the case where not increasing the bottom wall thickness of the second lug boss 83 in this way Part lengthens, to be conducive to the fixed support of contact pin.

Referring to fig. 4 to Fig. 9, bottom cover 8 includes third protrusion portion 85, and third protrusion portion 85 is from the upper surface of the first lug boss 82 The 824 direction protrusion setting to the upper surface 824 far from the first lug boss 82, referring to Fig. 8, third protrusion portion 85 is capable of forming the Three receiving portions 851, third receiving portion 851 are capable of forming third accommodating chamber 8511, in order to better discriminate between the second accommodating chamber 8311 With third accommodating chamber 8511, referring to Fig. 8, the upper surface 824 with the second lug boss 82 is interface, and the second accommodating chamber 8311 is located at The side of the upper surface 824 of second lug boss 82, third accommodating chamber 8511 are located at the another of the upper surface 824 of the second lug boss 82 Side, specifically, the second accommodating chamber 8311 are located at the upside of the upper surface 824 of the second lug boss 82 in Fig. 8, third accommodating chamber 8511 in the downside of the upper surface 824 of the second lug boss 82 in Fig. 8, the present embodiment, and third accommodating chamber 8511 and second is held Chamber 8311 of receiving connection setting, the inner peripheral surface of third receiving portion 851 are more convex closer to third than the inner circumferential side wall of the second receiving portion 831 The outer edge setting in portion 83 is played, i.e. the bore of 8511 to the second accommodating chamber 8311 of third accommodating chamber is big；Due to external connector Needs (not shown) are connect with the second connecting portion 103 of contact pin 10, therefore above-mentioned second receiving portion 831 and third receiving portion 851 Setting external connector (not shown) will not connect to generate with contact pin interfere.

Referring to fig. 4, Fig. 8 and Fig. 9, bottom cover 8 include positioning bar 86, and at least partly positioning bar 86 is set to the second receiving portion 831 inner circumferential side or at least partly positioning bar 86 are set to the inner circumferential side of third receiving portion 851, specifically, this implementation In example, along the axial direction of bottom cover 8, positioning bar 86 is from the bottom surface 8312 of the second receiving portion 831 to the bottom far from the second receiving portion 831 The direction protrusion in face 8312 is arranged, and in the present embodiment, positioning bar 86 is starting point to remote with the bottom surface 8312 of the second receiving portion 831 The direction protrusion of bottom surface from the second receiving portion 831 is arranged, and naturally in conjunction with Fig. 8, positioning bar 86 can also be accommodated directly second Direction protrusion setting of any one place as starting point to the bottom surface far from the second receiving portion 831 on the inner circumferential side in portion 831 Or any one place directly on the inner circumferential side of third receiving portion 851 as starting point to far from the second receiving portion 831 The direction protrusion of bottom surface is arranged；When the connector (not shown) that the setting of positioning bar 86 is beneficial to prevent outside is connect with contact pin 10 Cause wrong plug.

Referring to Fig. 3 to Fig. 6, bottom cover 8 includes multiple reinforcing ribs 87, reinforcing rib 87 and 81 integrated injection molding of main part, is added The first surface 811 of 87 main body 81 of strengthening tendons is arranged to the direction protrusion far from first surface 811, the setting of reinforcing rib 87 Be conducive to improve the structural strength of bottom cover 8, to be conducive to reduce the deformation of bottom cover 8.

Referring to Fig. 3 and Fig. 4, the material of bottom cover 8 is plastics, and bottom cover 8 includes at least two connecting holes 88, and connecting hole 88 is logical Hole, referring to Figure 10 to Figure 13, electronic oil pump includes metal inserted piece 13, metal inserted piece 13 be set in the connecting hole 88 of bottom cover and with 8 close-fitting of bottom cover or metal inserted piece 13 for forming connecting hole 88 are fixed with the injection molding of bottom cover 8；Metal inserted piece 13 includes through-hole 134, is led to The upper and lower surfaces of metal inserted piece 13 are run through in hole 134；In the present embodiment by bottom cover 8 embedded with metal mold insert 13 make Electronic oil pump is obtained when being installed with outside, passes through metal inserted piece 13 and realizes electronic oil pump and external connection, it is external in this way Power act on metal inserted piece 13, thus be conducive to reduce external force act directly on the deformation on bottom cover and causing bottom cover； Specifically, referring to Figure 10 and Figure 11, metal inserted piece 13 includes first end 131 and the second end 132, first end 131 and the Two ends 132 are oppositely arranged, and the outer peripheral diameter of first end 131 is equal with the outer peripheral diameter of the second end 132, metal inserted piece 13 include middle part 133, and middle part 133 is set between first end 131 and the second end 132, and the outer peripheral diameter at middle part 133 is less than The outer peripheral diameter of first end 131 or the second end 132；In conjunction with Fig. 3 and Figure 13, when the connection of metal inserted piece 13 and bottom cover 8 When 88 close-fitting of hole, specifically, 88 close-fitting of connecting hole of bottom cover 8, the second end 131 and Fig. 3 indsole in first end 131 and Fig. 3 88 close-fitting of connecting hole of lid 8, in the present embodiment, due to being provided with middle part 133, and the periphery at middle part 133 on metal inserted piece 13 Diameter is less than the outer peripheral diameter of first end 131 or the second end 132, the in this way connecting hole 88 when metal inserted piece 13 and bottom cover When close-fitting, be conducive to the area for reducing 13 polished surface of metal inserted piece, the i.e. outer peripheral surface of first end 131 and the second end 132 For polished surface, and the outer peripheral surface at middle part 133 is non-polished surface, advantageously reduces the machining accuracy of metal inserted piece 13 in this way, To be conducive to lower the processing cost of metal inserted piece；When metal inserted piece 13 and bottom cover 8 fixed using injection molding, middle part 133 Setting is beneficial to prevent metal inserted piece during draft and is pulled out or loosens.

Referring to Fig. 5, bottom cover 8 includes column 89, and column 89 is protruded from the following table of bottom cover 8 away from the lower surface direction at bottom Setting, " lower surface of bottom cover 8 " is the second surface 812 of main part here, and referring to Figure 14, electric-controlled plate component 6 includes positioning Hole 62, in conjunction with Fig. 1, when bottom cover and electric-controlled plate component are assembled, the column 89 on bottom cover is inserted into the positioning on electric-controlled plate component 6 Hole 62 and clearance fit corresponding with location hole 62 setting；Setting in this way so that when assemble bottom cover, by the column 89 of bottom cover and On the one hand the clearance fit of the location hole 62 of electric-controlled plate component 6 is conducive to the assembly precision for improving bottom cover, on the other hand can prevent Only bottom cover misloading, in the present embodiment, the quantity of location hole 62 and the quantity of positioning column 89 are equal to each other, specifically, positioning column 89 Quantity be two, the shape of positioning column 89 be it is cylindric, the shape of certain positioning column 89 may be rectangular or D-shaped or circle Annular or other polymorphic structures.

It should be understood that above embodiments are merely to illustrate the utility model and not limit described by the utility model Technical solution, although this specification has been carried out detailed description to the utility model referring to the above embodiments, 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 and its improvement of all spirit and scope for not departing from the utility model, it should all cover In the scope of the claims of the utility model.

Claims

1. a kind of electronic oil pump, including pump case, the first rotor component, stator module, the second rotor assembly and automatically controlled board group Part, the pump case are capable of forming pump inner cavity, and the pump inner cavity includes the first chamber and the second chamber, the first rotor component setting In first chamber, the stator module and second rotor assembly are set to second chamber, it is characterised in that: the pump Shell includes electric machine casing, and the electronic oil pump includes bottom cover, and the bottom cover is fixedly connected with the electric machine casing and forms Three chambers, the electric-controlled plate component are set to the third chamber, and the bottom cover includes main part and the first lug boss, the main part With the first lug boss integrated injection molding shape, the main part includes first surface and second surface, the first surface with The second surface is disposed opposite to each other, and first lug boss is from the first surface to the direction protrusion far from the first surface Setting, the bottom cover include the first receiving portion, and first receiving portion is capable of forming the first accommodating chamber, and first accommodating chamber is certainly The second surface is shaped to the top depression of first lug boss, and it is convex that part first accommodating chamber forms in described first The portion of rising, the electric-controlled plate component include one or more capacitors, and a part of at least each capacitor is contained in described first Accommodating chamber；First receiving portion surrounds first accommodating chamber；First receiving portion includes the first side wall and second sidewall, The first side wall and the second sidewall define a section, the section is perpendicular to first surface and the section in planar Perpendicular to the first side wall or second sidewall, the medial surface intersection of the section and the first side wall is the first intersection, the section with it is described The intersection of the medial surface of second sidewall is the second intersection, and the intersection of the periphery of the section and bottom cover is that third intersection and the 4th hand over First intersection, the second intersection, third intersection and the 4th intersection are projected to the second surface, obtain the first friendship by line Point, the second intersection point, third intersection point and the 4th intersection point take the third intersection point and the midpoint of the 4th intersection point line to be defined as First nodal point, the third intersection point and first intersection point are located at the side of the first nodal point, the 4th intersection point position In the other side of the first nodal point, the distance of first intersection point to the first nodal point is greater than second intersection point extremely The distance of the first nodal point, the distance of first intersection point to the third intersection point are less than second intersection point to described the The distance of four intersection points.

2. electronic oil pump according to claim 1, it is characterised in that: define first intersection point and second intersection point Midpoint is the second central point, and second central point is arranged than the first nodal point close to the third intersection point, described second The thickness of side wall is less than or equal to 1.5 times of the first side wall thickness.

3. electronic oil pump according to claim 1 or 2, it is characterised in that: the bottom cover includes the second lug boss, at least portion Second lug boss is divided to be set to first accommodating chamber, second lug boss is from the bottom surface of first receiving portion to institute The direction protrusion setting of second surface is stated, second lug boss includes the second receiving portion, and second receiving portion is capable of forming Second accommodating chamber, the electronic oil pump include contact pin, and contact pin includes our department, first connecting portion and second connecting portion, described our department It is set between the first connecting portion and the second connecting portion, the first connecting portion stretches out second lug boss, institute It states second connecting portion and is set to second accommodating chamber, described our department of at least partly described contact pin and second lug boss are tight Match or described our department of at least partly described contact pin is fixed with second lug boss injection molding.

4. electronic oil pump according to claim 3, it is characterised in that: the bottom cover includes protruding portion, and the protruding portion is certainly The top of second lug boss is provided projectingly away from the top surface direction of second lug boss, the protruding portion and described the Two lug boss integrated injection moldings, the contact pin pass through the top surface of the protruding portion and the bottom surface of second receiving portion.

5. electronic oil pump according to claim 3, it is characterised in that: the bottom cover includes third protrusion portion, the third Lug boss is described from the upper surface of first lug boss to the setting of the direction protrusion of the upper surface far from first lug boss Third protrusion portion is capable of forming third receiving portion, and the third receiving portion is capable of forming third accommodating chamber, the third accommodating chamber Be connected to setting with second accommodating chamber, the inner peripheral surface of the third receiving portion than second receiving portion inner peripheral surface closer to The neighboring in the third protrusion portion is arranged.

6. electronic oil pump according to claim 4, it is characterised in that: the bottom cover includes third protrusion portion, the third Lug boss is described from the upper surface of first lug boss to the setting of the direction protrusion of the upper surface far from first lug boss Third protrusion portion is capable of forming third receiving portion, and the third receiving portion is capable of forming third accommodating chamber, the third accommodating chamber Be connected to setting with second accommodating chamber, the inner peripheral surface of the third receiving portion than second receiving portion inner peripheral surface closer to The neighboring in the third protrusion portion is arranged.

7. electronic oil pump according to claim 5, it is characterised in that: the bottom cover includes positioning bar, at least partly described Positioning bar is set to the inner circumferential side of second receiving portion or at least partly described positioning bar is set to the third and accommodates The inner circumferential side in portion.

8. electronic oil pump described according to claim 1 or 2 or 4 or 6 or 7, it is characterised in that: the bottom cover includes multiple reinforcements Muscle, the reinforcing rib and the main part integrated injection molding, the reinforcing rib from the first surface of the main part to Direction protrusion far from the first surface is arranged.

9. electronic oil pump according to claim 3, it is characterised in that: the bottom cover includes multiple reinforcing ribs, the reinforcement Muscle and the main part integrated injection molding, the reinforcing rib is from the first surface of the main part to far from described first The direction protrusion on surface is arranged.

10. electronic oil pump according to claim 5, it is characterised in that: the bottom cover includes multiple reinforcing ribs, the reinforcement Muscle and the main part integrated injection molding, the reinforcing rib is from the first surface of the main part to far from described first The direction protrusion on surface is arranged.

11. electronic oil pump according to claim 8, it is characterised in that: the material of the bottom cover is plastics, and the bottom cover is extremely It less include two connecting holes, the connecting hole is through-hole, and the electronic oil pump includes metal inserted piece, and the metal inserted piece is set to It is fixed in the connecting hole and with the connecting hole close-fitting or the injection molding of the metal inserted piece and the bottom cover.

12. electronic oil pump according to claim 9 or 10, it is characterised in that: the material of the bottom cover is plastics, the bottom Lid includes at least two connecting holes, and the connecting hole is through-hole, and the electronic oil pump includes metal inserted piece, and the metal inserted piece is set It is placed in the connecting hole and is fixed with the connecting hole close-fitting or the injection molding of the metal inserted piece and the bottom cover.

13. electronic oil pump according to claim 11, it is characterised in that: the metal inserted piece includes through-hole, the through-hole Through the upper and lower surfaces of the metal inserted piece, the metal inserted piece includes first end and the second end, and described first End and the second end are oppositely arranged, the outer peripheral diameter phase of the outer peripheral diameter of the first end and the second end Deng the metal inserted piece includes middle part, and the middle part is set between the first end and the second end, the middle part Outer peripheral diameter be less than the outer peripheral diameter of the first end or the second end.

14. electronic oil pump according to claim 12, it is characterised in that: the metal inserted piece includes through-hole, the through-hole Through the upper and lower surfaces of the metal inserted piece, the metal inserted piece includes first end and the second end, and described first End and the second end are oppositely arranged, the outer peripheral diameter phase of the outer peripheral diameter of the first end and the second end Deng the metal inserted piece includes middle part, and the middle part is set between the first end and the second end, the middle part Outer peripheral diameter be less than the outer peripheral diameter of the first end or the second end.

15. electronic oil pump described according to claim 1 or 2 or 4 or 6 or 7 or 9 or 10 or 11 or 13 or 14, it is characterised in that: The bottom cover includes column, and the column is set from the following table of the bottom cover away from the lower surface direction protrusion of the bottom cover It sets, the electric-controlled plate component includes location hole, and the column is inserted into the location hole and clearance fit corresponding with the location hole Setting.

16. electronic oil pump according to claim 3, it is characterised in that: the bottom cover includes column, and the column is described in The following table of bottom cover protrudes setting away from the lower surface direction of the bottom cover, and the electric-controlled plate component includes location hole, described Column is inserted into the location hole and clearance fit corresponding with the location hole is arranged.

17. electronic oil pump according to claim 5, it is characterised in that: the bottom cover includes column, and the column is described in The following table of bottom cover protrudes setting away from the lower surface direction of the bottom cover, and the electric-controlled plate component includes location hole, described Column is inserted into the location hole and clearance fit corresponding with the location hole is arranged.

18. electronic oil pump according to claim 8, it is characterised in that: the bottom cover includes column, and the column is described in The following table of bottom cover protrudes setting away from the lower surface direction of the bottom cover, and the electric-controlled plate component includes location hole, described Column is inserted into the location hole and clearance fit corresponding with the location hole is arranged.

19. electronic oil pump according to claim 12, it is characterised in that: the bottom cover includes column, and the column is from institute Lower surface direction protrusion setting of the following table away from the bottom cover of bottom cover is stated, the electric-controlled plate component includes location hole, institute It states column and is inserted into the location hole and clearance fit corresponding with location hole setting.

20. electronic oil pump according to claim 1, it is characterised in that: define first intersection point and second intersection point Midpoint be the second central point, second central point is arranged than the first nodal point close to the third intersection point, described the The thickness of two side walls is less than or equal to 1.5 times of the first side wall thickness；The bottom cover includes the second lug boss, at least partly institute It states the second lug boss and is set to first accommodating chamber, second lug boss is from the bottom surface of first receiving portion to described The direction protrusion on two surfaces is arranged, and second lug boss includes the second receiving portion, and second receiving portion is capable of forming second Accommodating chamber, the electronic oil pump include contact pin, and contact pin includes our department, first connecting portion and second connecting portion, our department's setting Between the first connecting portion and the second connecting portion, the first connecting portion stretches out second lug boss, and described the Two interconnecting pieces are set to second accommodating chamber, described our department of at least partly described contact pin and the second lug boss close-fitting or Described our department of at least partly described contact pin of person and second lug boss injection molding are fixed；The bottom cover includes protruding portion, described Top surface of the protruding portion from the top of second lug boss away from second lug boss is provided projectingly, the protruding portion and institute The second lug boss integrated injection molding is stated, the contact pin passes through the top surface of the protruding portion and the bottom surface of second receiving portion； The bottom cover includes third protrusion portion, and the third protrusion portion is convex from the upper surface of first lug boss to separate described first The direction protrusion setting of the upper surface in the portion of rising, the third protrusion portion is capable of forming third receiving portion, the third receiving portion energy Third accommodating chamber is enough formed, the third accommodating chamber is connected to setting, the inner circumferential of the third receiving portion with second accommodating chamber Face is arranged than the neighboring in inner peripheral surface closer to the third protrusion portion of second receiving portion；The bottom cover includes positioning bar, At least partly described positioning bar is set to the inner circumferential side of second receiving portion or at least partly described positioning bar is set to The inner circumferential side of the third receiving portion；The bottom cover includes multiple reinforcing ribs, and the reinforcing rib and the main part are integrally infused It is moulded into type, the reinforcing rib is arranged from the first surface of the main part to the direction protrusion far from the first surface； The material of the bottom cover is plastics, and the bottom cover includes at least two connecting holes, and the connecting hole is through-hole, the electronic oil pump Including metal inserted piece, the metal inserted piece be set in the connecting hole and with the connecting hole close-fitting or the metal inserted piece It is molded and fixes with the bottom cover；The metal inserted piece includes through-hole, and the through-hole is through the upper surface of the metal inserted piece under Surface, the metal inserted piece include first end and the second end, and the first end and the second end are oppositely arranged, institute The outer peripheral diameter for stating first end is equal with the outer peripheral diameter of the second end, and the metal inserted piece includes middle part, it is described in Portion is set between the first end and the second end, the outer peripheral diameter at the middle part be less than the first end or The outer peripheral diameter of the second end；The bottom cover includes column, and the column is from the following table of the bottom cover away from described Setting is protruded in the lower surface direction of bottom cover, and the electric-controlled plate component includes location hole, the column be inserted into the location hole and with The location hole corresponds to clearance fit setting.