CN109969258B - Electric oil pump assembly and vehicle with same - Google Patents

Electric oil pump assembly and vehicle with same Download PDF

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Publication number
CN109969258B
CN109969258B CN201711463250.9A CN201711463250A CN109969258B CN 109969258 B CN109969258 B CN 109969258B CN 201711463250 A CN201711463250 A CN 201711463250A CN 109969258 B CN109969258 B CN 109969258B
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China
Prior art keywords
oil
pump assembly
oil pump
assembly
pump
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CN201711463250.9A
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Chinese (zh)
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CN109969258A (en
Inventor
杨胜麟
王涛
蔡柏聪
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BYD Co Ltd
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BYD Co Ltd
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Priority to CN201711463250.9A priority Critical patent/CN109969258B/en
Publication of CN109969258A publication Critical patent/CN109969258A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R17/00Arrangements or adaptations of lubricating systems or devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D5/00Power-assisted or power-driven steering
    • B62D5/06Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
    • B62D5/062Details, component parts
    • B62D5/064Pump driven independently from vehicle engine, e.g. electric driven pump

Abstract

The invention discloses an electric oil pump assembly and a vehicle with the same, wherein the electric oil pump assembly is provided with a main oil inlet and a main oil outlet and comprises: the motor assembly comprises a driving shaft, the oil pump assembly is supported on an end cover of the motor assembly in a floating mode, the driving shaft extends into the oil pump assembly and drives the oil pump assembly to achieve oil pumping work from the main oil inlet to the main oil outlet. According to the electric oil pump assembly, the connection distance between the motor component and the oil pump component is short, and the electric oil pump assembly is small and exquisite in structure, compact, light in weight and low in cost.

Description

Electric oil pump assembly and vehicle with same
Technical Field
The invention relates to the field of vehicle equipment, in particular to an electric oil pump assembly and a vehicle with the same.
Background
The electric oil pump is widely applied to a steering system and a lubricating system of a vehicle, in the related technology, the oil pump and the motor of the electric oil pump are split, and the connection relation is only the power coupling connection of the oil pump shaft and the motor shaft, so that the electric oil pump is large in size and large in occupied installation space. In addition, the working noise of the motor and the working noise of the oil pump are large, noise is usually isolated by arranging various damping elements in the related art, the damping elements are complex in structure, large installation space is occupied, production cost is high, assembly process is complex, and improvement space exists.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides an electric oil pump assembly which is compact in structure.
The invention also provides a vehicle with the electric oil pump assembly.
According to an embodiment of the first aspect of the present invention, the electric oil pump assembly has a main oil inlet and a main oil outlet, and includes: a motor assembly including a drive shaft; the oil pump assembly is supported on an end cover of the motor assembly in a floating mode, the driving shaft extends into the oil pump assembly and drives the oil pump assembly to achieve oil pumping work from the main oil inlet to the main oil outlet.
According to the electric oil pump assembly, the connection distance between the motor component and the oil pump component is short, and the electric oil pump assembly is small and exquisite in structure, compact, light in weight and low in cost.
In some embodiments, the drive shaft is connected to a power input of the oil pump assembly.
In some embodiments, the oil pump assembly has a power input shaft on a power input, and the drive shaft is connected to the power input shaft.
In some embodiments, an outer end face edge of the end of the drive shaft has a guide surface to facilitate insertion of the end into the oil pumping mechanism.
In some embodiments, the drive shaft includes a multi-segmented stepped shaft face.
In some embodiments, the electric oil pump assembly includes a general assembly cabin, the general assembly cabin includes a motor cabin and an oil pump cabin, the motor cabin is communicated with the general oil inlet, the oil pump cabin is communicated with the general oil outlet, the oil pump component is disposed in the oil pump cabin, an oil suction port of the oil pump component is communicated with the motor cabin, and an oil discharge port of the oil pump component is communicated with the oil pump cabin.
In some embodiments, a pre-compression spring is arranged between one side end face of the oil pump assembly far away from the motor assembly and the inner wall face of the oil pump cabin.
In some embodiments, the assembly cabin includes a motor cabin and an oil pump cabin, the motor assembly is disposed in the motor cabin, the oil pump assembly is disposed in the oil pump cabin, an oil suction port of the oil pump assembly is communicated with the oil pump cabin, and an oil discharge port of the oil pump assembly is communicated with the oil outlet through an oil discharge passage.
In some embodiments, the flow passage in the integrated installation cabin is configured to flow through the stator of the motor assembly and then to the oil pump assembly after oil enters the integrated installation cabin through the main oil inlet.
A vehicle according to an embodiment of the second aspect of the invention includes the electric oil pump assembly according to the first aspect of the invention.
The vehicle according to the invention has the advantages of small and compact structure, light weight and low cost.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is an exploded view of an oil pump assembly according to a first embodiment of the present invention;
FIG. 2 is an axial side elevational view of the oil pump assembly illustrated in FIG. 1;
FIG. 3 is an axially opposite side elevational view of the oil pump assembly illustrated in FIG. 1;
FIG. 4 is a cross-sectional view of the oil pump assembly shown in FIG. 1;
FIG. 5 is another cross-sectional view of the oil pump assembly shown in FIG. 1;
FIG. 6 is a cross-sectional view of an electric oil pump assembly according to a first embodiment of the present invention;
FIG. 7 is an enlarged view of portion F of FIG. 6;
fig. 8 is an exploded view of an oil pump assembly according to a second embodiment of the present invention;
FIG. 9 is an axial side elevational view of the oil pump assembly illustrated in FIG. 8;
FIG. 10 is an axially opposite side elevational view of the oil pump assembly illustrated in FIG. 8;
FIG. 11 is a cross-sectional view of the oil pump assembly shown in FIG. 8;
FIG. 12 is another cross-sectional view of the oil pump assembly shown in FIG. 8;
FIG. 13 is still another cross-sectional view of the oil pump assembly shown in FIG. 8;
fig. 14 is a sectional view of an electric oil pump assembly according to a second embodiment of the invention;
fig. 15 is an exploded view of an oil pump assembly according to a third embodiment of the present invention;
FIG. 16 is an axial side elevational view of the oil pump assembly illustrated in FIG. 15;
FIG. 17 is an axially opposite side elevational view of the oil pump assembly illustrated in FIG. 15;
FIG. 18 is a cross-sectional view of the oil pump assembly shown in FIG. 15;
FIG. 19 is another cross-sectional view of the oil pump assembly shown in FIG. 15;
FIG. 20 is still another cross-sectional view of the oil pump assembly shown in FIG. 15;
fig. 21 is a sectional view of an electric oil pump assembly according to a third embodiment of the invention;
fig. 22 is an exploded view of an oil pump assembly according to a fourth embodiment of the present invention;
FIG. 23 is an axial side elevational view of the oil pump assembly illustrated in FIG. 22;
FIG. 24 is an axially opposite side elevational view of the oil pump assembly illustrated in FIG. 22;
FIG. 25 is a cross-sectional view of the oil pump assembly shown in FIG. 22;
FIG. 26 is another cross-sectional view of the oil pump assembly shown in FIG. 22;
FIG. 27 is still another cross-sectional view of the oil pump assembly shown in FIG. 22;
fig. 28 is a sectional view of an electric oil pump assembly according to a fourth embodiment of the invention;
fig. 29 is an exploded view of an oil pump assembly according to a fifth embodiment of the invention;
FIG. 30 is an axial side elevational view of the oil pump assembly illustrated in FIG. 29;
FIG. 31 is an axially opposite side elevational view of the oil pump assembly illustrated in FIG. 29;
FIG. 32 is a cross-sectional view of the oil pump assembly shown in FIG. 29;
FIG. 33 is another cross-sectional view of the oil pump assembly shown in FIG. 29;
fig. 34 is a sectional view of an electric oil pump assembly according to a fifth embodiment of the invention;
fig. 35 is an exploded view of an oil pump assembly according to a sixth embodiment of the invention;
FIG. 36 is an axial side elevational view of the oil pump assembly illustrated in FIG. 35;
FIG. 37 is an axially opposite side elevational view of the oil pump assembly illustrated in FIG. 35;
FIG. 38 is a cross-sectional view of the oil pump assembly shown in FIG. 35;
FIG. 39 is another cross-sectional view of the oil pump assembly shown in FIG. 35;
FIG. 40 is a cross-sectional view of an electric oil pump assembly according to a sixth embodiment of the present invention;
fig. 41 is an exploded view of an oil pump assembly according to a seventh embodiment of the present invention;
FIG. 42 is an axial side elevational view of the oil pump assembly illustrated in FIG. 41;
FIG. 43 is an axially opposite side elevational view of the oil pump assembly illustrated in FIG. 41;
FIG. 44 is a cross-sectional view of the oil pump assembly shown in FIG. 41;
FIG. 45 is another cross-sectional view of the oil pump assembly shown in FIG. 41;
fig. 46 is a sectional view of an electric oil pump assembly according to a seventh embodiment of the invention;
fig. 47 is an exploded view of an oil pump assembly according to an eighth embodiment of the present invention;
FIG. 48 is an axial side elevational view of the oil pump assembly illustrated in FIG. 47;
FIG. 49 is an axially opposite side elevational view of the oil pump assembly illustrated in FIG. 47;
FIG. 50 is an axially opposite side elevational view of the oil pump assembly illustrated in FIG. 47;
FIG. 51 is a cross-sectional view of the oil pump assembly shown in FIG. 47;
FIG. 52 is another cross-sectional view of the oil pump assembly shown in FIG. 47;
fig. 53 is a sectional view of an electric oil pump assembly according to an eighth embodiment of the invention;
FIG. 54 is an exploded view of an oil pump assembly according to the ninth embodiment of the present invention;
FIG. 55 is an axial side elevational view of the oil pump assembly illustrated in FIG. 54;
FIG. 56 is an axially opposite side elevational view of the oil pump assembly illustrated in FIG. 54;
FIG. 57 is an axially opposite side elevational view of the oil pump assembly illustrated in FIG. 54;
FIG. 58 is a cross-sectional view of the oil pump assembly shown in FIG. 54;
FIG. 59 is another cross-sectional view of the oil pump assembly shown in FIG. 54;
FIG. 60 is a cross-sectional view of an electric oil pump assembly according to embodiment nine of the present invention;
fig. 61 is an exploded view of an oil pump assembly according to a tenth embodiment of the invention;
FIG. 62 is an axial side elevational view of the oil pump assembly illustrated in FIG. 61;
FIG. 63 is an axially opposite side elevational view of the oil pump assembly illustrated in FIG. 61;
FIG. 64 is an axially opposite side elevational view of the oil pump assembly illustrated in FIG. 61;
FIG. 65 is a cross-sectional view of the oil pump assembly shown in FIG. 61;
FIG. 66 is another cross-sectional view of the oil pump assembly shown in FIG. 61;
fig. 67 is a sectional view of an electric oil pump assembly according to a tenth embodiment of the invention;
fig. 68 is a vehicle according to an embodiment of the invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the applicability of other processes and/or the use of other materials.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Furthermore, those skilled in the art can combine and combine the features of different embodiments or examples and different embodiments or examples described in this specification without contradiction, all of which fall within the scope of the present invention. While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Next, referring to fig. 1 to 7 in combination with fig. 40 and 46, an oil pump assembly 1 and an electric oil pump assembly 1000 having the same according to an embodiment of the first aspect of the present invention will be described.
As shown in fig. 6, the electric oil pump assembly 1000 according to the embodiment of the present invention has a main oil inlet 201 and a main oil outlet 202, and the electric oil pump assembly 1000 includes: an oil pump assembly 1 and a motor assembly 2.
As shown in fig. 1, 6 and 7, the motor assembly 2 includes a driving shaft 24, the oil pump assembly 1 is floatingly supported on an end cover 211 of the motor assembly 2 (i.e., the oil pump assembly 1 is non-fixedly connected to the end cover 211 of the motor assembly 2, in this case, the oil pump assembly 1 is movable relative to the end cover 211 of the motor assembly 2, for example, movable along an axial direction, a radial direction, etc. of the driving shaft 24), the driving shaft 24 extends into an interior of the oil pump assembly 1 (here, the driving shaft 24 is further connected to the rotor 23, so that the driving shaft 24 does not entirely extend into the interior of the oil pump assembly 1), and the oil pump assembly 1 is driven to pump oil from the main oil inlet 201 to the main oil outlet 202.
Therefore, according to the electric oil pump assembly 1000 of the embodiment of the invention, since the driving shaft 24 extends into the oil pump assembly 1, the connection distance between the motor assembly 2 and the oil pump assembly 1 can be reduced, so that the electric oil pump assembly 1000 has the advantages of smaller and more compact structure, lighter weight, lower cost and more convenient vehicle-mounted carrying.
In some preferred embodiments of the present invention, the electric oil pump assembly 1000 may further include a housing assembly for accommodating the oil pump assembly 1 and the motor assembly 2, the housing assembly includes a housing 21, a general cabin 200 filled with oil is defined in the housing 21, a general oil inlet 201 and a general oil outlet 202 are formed on the housing 21, the motor assembly 2 and the oil pump assembly 1 are disposed in the general cabin 200, wherein the motor assembly 2 includes a stator 22 and a rotor 23, the rotor 23 is rotatable relative to the stator 22 and is connected to a driving shaft 24, the oil pump assembly 1 includes an oil pumping mechanism 11, and the oil pumping mechanism 11 is driven by the driving shaft 24 to pump oil from the general oil inlet 201 to the general oil outlet 202.
Specifically, referring to fig. 6, in the operation process of the electric oil pump assembly 1000, the rotor 23 drives the driving shaft 24 to rotate relative to the stator 22, the driving shaft 24 drives the oil pumping mechanism 11 to operate, in the operation process of the oil pumping mechanism 11, oil outside the casing 21 may enter the main assembly compartment 200 through the main oil inlet 201, and oil inside the main assembly compartment 200 may be discharged outside the casing 21 through the main oil outlet 202.
Therefore, according to the electric oil pump assembly 1000 of the embodiment of the present invention, since the oil pump assembly 1 and the motor assembly 2 are both completely disposed in the assembly cabin 200 filled with oil and are wrapped by the oil, the wall thickness of the pump body 121 of the oil pump assembly 1 can be reduced as much as possible, so that the weight and the occupied space of the oil pump assembly 1 are reduced, the transmission of working noise to the outside of the oil pump assembly 1 can be reduced, the sealing requirement of the oil pump assembly 1 can be reduced, the design and the investment of a sealing member (such as a sealing ring described below) can be reduced, the volume, the weight, the cost and the noise of the electric oil pump assembly 1000 can be reduced, and the electric oil pump assembly is more favorable. In short, according to the electric oil pump assembly 1000 of the embodiment of the present invention, since the oil pump component 1 and the motor component 2 are integrally disposed, the working noise of the electric oil pump assembly 1000 can be effectively reduced, and the structure of the electric oil pump assembly 1000 is more compact. Here, the housing 21 of the electric oil pump assembly 1000 may be regarded as a housing of the motor assembly 2, and in this case, it is understood that the oil pump assembly 1, the stator 22, the rotor 23, and the driving shaft 24 are integrally integrated in the housing in the motor assembly 2.
Specifically, the oil pumping mechanism 11 may include only the oil pumping portion 112, and the oil pumping mechanism 11 may include both the oil pumping portion 112 and the rotating shaft portion 111, and the oil pumping portion 112 is connected to the rotating shaft portion 111, wherein the oil pumping portion 112 functions to pump oil, and the rotating shaft portion 111 functions to input torque and/or support the oil pumping portion 112. The oil pumping mechanism 11 may be an internal gear set, an external gear set, or a rotating impeller. Here, the phrase "the oil pumping part 112 is connected to the rotating shaft part 111" as used herein means: the rotating shaft portion 111 and the oil pumping portion 112 may be separate components and assembled together, and the rotating shaft portion 111 and the oil pumping portion 112 may also be an integrally formed integral component.
For example, when the pumping mechanism 11 is a ring gear set (not shown), the pumping portion 112 may include an outer ring gear and an inner gear, and if the pumping mechanism 11 further includes the rotating shaft portion 11, the rotating shaft portion 111 may include a driven shaft connected to the outer ring gear and a driving shaft connected to the inner gear.
For example, when the oil pumping mechanism 11 is an external gear set (refer to fig. 1), the oil pumping unit 112 may include a driving gear 112A and a driven gear 112B, and if the oil pumping mechanism 11 further includes the rotating shaft unit 11, the rotating shaft unit 111 may include a driven shaft 111B connected to the driven gear 112B and a driving shaft 111A connected to the driving gear 112A.
For example, when the oil pumping mechanism 11 is a rotary impeller (not shown), the oil pumping portion 112 may include a hub and a blade, and if the oil pumping mechanism 11 further includes the rotating shaft portion 11, the rotating shaft portion 111 may include a rotating shaft connected to the hub.
In some alternative embodiments of the present invention, the driving shaft 24 is connected to the power input portion of the oil pump assembly 1 (i.e., the power input component of the oil pumping portion 112, such as the above-mentioned internal gear, the driving gear 112A, the hub, etc.). That is, drive shaft 24 may extend directly into and connect with the power input, for example, drive shaft 24 and power input may be keyed, such as a flat key connection, a splined connection, etc. Therefore, the driving reliability of the driving shaft 24 for the oil pump assembly 1 can be improved, and the self-adaptive centering effect of the oil pump assembly 1 and the motor assembly 2 is better.
Preferably, as shown in fig. 1, 4 and 7, the drive shaft 24 is splined to the power input. That is, the inner wall of the shaft hole of the power input portion has an internal spline, the peripheral wall surface of the end portion 2431 of the drive shaft 24 has an external spline, the end portion 2431 of the drive shaft 24 is inserted into the shaft hole, and the internal spline is connected with the external spline, so that the drive shaft 24 can drive the oil pumping mechanism 11 to stably and reliably rotate, and the spline fitting part has small contact stress, is not easy to fatigue damage, and has long service life.
Of course, the invention is not limited to this, and in other embodiments of the invention, the driving shaft 24 and the power input part may be coupled in other ways, for example, the inner wall of the shaft hole of the power input part may have a groove, the peripheral wall surface of the end 2431 of the driving shaft 24 has a protrusion, and after the end 2431 of the driving shaft 24 is inserted into the shaft hole of the power input part, the protrusion and the groove are matched, so that the driving shaft 24 can drive the power input part to rotate.
In some alternative embodiments of the present invention, the oil pump assembly 1 has a power input shaft on the power input portion, and the driving shaft 24 is connected to the power input shaft (such as the driving shaft connected to the internal gear, the driving shaft 111A connected to the driving gear 112A, and the rotating shaft connected to the hub as described above). That is, drive shaft 24 may extend directly into and connect with the power input shaft, for example, drive shaft 24 and power input shaft may be keyed, such as a flat key connection, a splined connection, etc. Therefore, the driving reliability of the driving shaft 24 for the oil pump assembly 1 can be improved, and the self-adaptive centering effect of the oil pump assembly 1 and the motor assembly 2 is better.
Thus, according to the above description, when the oil pumping mechanism 11 is an internal gear set (not shown), the driving shaft 24 may be inserted into the shaft hole on the driving shaft (when the driving shaft is not provided, the driving shaft 24 may be directly inserted into the shaft hole on the internal gear) to drive the internal gear to rotate, and the internal gear rotates to drive the external gear ring to rotate, thereby realizing oil pumping.
When the oil pumping mechanism 11 is an external gear set (refer to fig. 1), the driving shaft 24 may be inserted into the shaft hole 1121 on the driving shaft 111A (when the driving shaft 111A is not provided, the driving shaft 24 may be directly inserted into the shaft hole on the driving gear 112A) to drive the driving gear 112A to rotate, and when the driving gear 112A rotates, the driving gear 112B is driven to rotate, thereby achieving oil pumping.
When the oil pumping mechanism 11 is a rotary impeller (not shown), the driving shaft 24 can be inserted into the shaft hole of the rotating shaft (when the rotating shaft is not provided, the driving shaft 24 can be directly inserted into the shaft hole of the hub) to drive the hub to rotate, and the hub rotates to drive the blades to rotate, so that the oil pumping operation is realized.
For example, in some specific examples of the present invention, as shown in fig. 1 and 4, a shaft hole for inserting the drive shaft 24 on the oil pump assembly 1 axially penetrates the oil pumping mechanism 11. Therefore, the processing and the manufacturing of the shaft hole are facilitated, the processing and the manufacturing of the internal spline are facilitated, and in addition, the driving shaft 24 drives the oil pump assembly 1 to work, the heat dissipation performance is good, and the service life is long. Of course, the invention is not limited to the above, and the shaft hole can be processed into a blind hole according to the requirement, so as to better meet different practical requirements.
In some embodiments of the present invention, as shown in fig. 7, the outer end face edge of the end portion 2431 of the driving shaft 24 has a guide surface 2432 for facilitating the insertion of the end portion 2431 into the oil pump assembly 1, and the guide surface 2432 may be machined by rounding or chamfering, for example, so as to improve the assembly efficiency of the driving shaft 24 and the oil pump assembly 1.
In some embodiments of the present invention, as shown in fig. 1, 6 and 7, drive shaft 24 includes a multi-segmented stepped shaft surface. Therefore, the driving shaft 24 and the oil pump assembly 1 are convenient to position and mount. For example, in some embodiments of the present invention, the first shaft segment 241, the second shaft segment 242, and the third shaft segment 243 are included, which are connected in sequence along the axial direction, and the shaft cross-sectional areas of the first shaft segment 241, the second shaft segment 242, and the third shaft segment 243 are all equal cross-sectional shafts, wherein the cross-sectional area of the second shaft segment 242 is smaller than the cross-sectional area of the first shaft segment 241 and larger than the cross-sectional area of the third shaft segment 243, wherein the first shaft segment 241 is connected to the rotor 23, the third shaft segment 243 is connected to the oil pumping mechanism 11, and the second shaft segment 242 is stopped at one axial side of the oil pumping mechanism 11, that is, the cross-sectional area of the second shaft segment 242 is larger than the hole 1121 of the oil pumping mechanism 11, so that the second shaft segment cannot extend into the oil pumping mechanism 11 to be located at one. Therefore, the driving shaft 24 is simple in structure, convenient to machine and install, good in structural strength and high in driving reliability. Of course, without limitation, the driving shaft 24 may be machined into other multi-step shaft surface shapes, such as a shaft segment disposed between the first shaft segment 241 and the second shaft segment 242, a shaft segment disposed between the second shaft segment 242 and the third shaft segment 243, and the like.
In some embodiments of the present invention, as shown in fig. 1 and 6, the assembly cabin 200 includes a motor cabin 200A and an oil pump cabin 200B (here, the oil pump cabin 200B is isolated from the motor cabin 200A, that is, the oil pump cabin 200B is not directly communicated with the motor cabin 200A through an oil hole, an oil duct, or the like, that is, the motor cabin 200A wraps the oil pump cabin 200B), the motor cabin 200A is communicated with the assembly oil inlet 201, the oil pump cabin 200B is communicated with the assembly oil outlet 202, the oil pump assembly 1 is disposed in the oil pump cabin 200B, the oil inlet 101 of the oil pump assembly 1 is communicated with the motor cabin 200A, and the oil outlet 102 of the oil pump assembly 1 is communicated with the oil pump cabin 200B. Therefore, as described below, the working noise and vibration of the oil pump assembly 1 can be effectively reduced, and a sealing ring does not need to be arranged on the outer ring of the oil discharge port 102 (i.e., even if the pump case assembly 12 leaks, the leaked oil directly enters the oil pump chamber 200B and cannot be thrown into the air), so that the wall thickness, weight and cost of the pump case assembly 12 are reduced.
Specifically, as shown in fig. 1 and 6, the oil pump assembly 1 is floatingly mounted in the oil pump compartment 200B, for example, by a positioning pin 17 described below, so that the rotating member of the oil pump assembly 1 and the rotating member of the motor assembly 2 are automatically centered, thereby reducing vibration and noise.
Preferably, a pre-compression spring 25 is arranged between an end surface of the oil pump assembly 1 on the side away from the motor assembly 2 and an inner wall surface of the oil pump chamber 200B, for example, the pre-compression spring 25 may be a coil spring, a wave spring, a disc spring, or the like. Therefore, as described below, when the motor assembly 2 is started, the pre-compression spring 25 can prevent a gap from being generated between the oil pump assembly 1 and the inner wall surface of the oil pump compartment 200B, and avoid a problem that oil in the motor compartment 200A directly leaks into the oil pump compartment 200B from the gap and cannot normally enter the oil suction port 101 of the oil pump assembly 1, thereby improving the operational reliability of the oil pump assembly 1.
In some embodiments of the invention, as in figure 1, as shown in fig. 40 and 46, the assembly cabin 200 includes a motor cabin 200A ' and an oil pump cabin 200B ' (here, the oil pump cabin 200B ' and the motor cabin 200A ' may be directly communicated through an oil hole, an oil passage, etc., so the assembly cabin 200 may be regarded as an integrated installation cabin 200C, that is, the assembly cabin 200 is not divided into an independent motor cabin 200A and an oil pump cabin 200B), the motor assembly 2 is disposed in the motor cabin 200A ', the oil pump assembly 1 is disposed in the oil pump cabin 200B ' (both the motor assembly 2 and the oil pump assembly 1 are disposed in the integrated installation cabin 200C), the oil suction port 101 of the oil pump assembly 1 is communicated with the oil pump cabin 200B ' (i.e., communicated with the integrated installation cabin 200C), and the oil discharge port 102 of the oil pump assembly 1 is communicated with the assembly oil outlet 202 through an oil discharge passage 2110 (where the oil discharge passage 2110 isolates the oil discharge passage 2110 from being disposed in the integrated installation cabin 200C, i.e., the oil discharge passage 2110 is not directly communicated with oil in the integrated installation cabin 200C. From this, electric oil pump assembly 1000's simple structure, convenient processing and installation can reduce the operating noise and the vibration of oil pump subassembly 1 in addition equally, and need not to set up the sealing ring in oil drain port 102 outer lane (even if pump case subassembly 12 takes place to leak, the fluid of leaking also directly enters into integrated installation cabin 200C, can not get into in the air) to pump case subassembly 12 wall thickness, weight and cost have been reduced.
Preferably, the flow passage in the integrated installation chamber 200C is configured to flow through the stator 22 of the motor assembly 2 and then to the oil pump assembly 1 when oil enters the integrated installation chamber 200C through the oil inlet 201. Therefore, the heat dissipation effect of the motor assembly 2 can be improved by arranging the flow channel in the integrated installation cabin 200C.
In addition, according to other configurations and other modifications of the electric oil pump assembly 1000 according to the embodiment of the present invention, for example, in the electric oil pump assembly 1000 according to the first to tenth embodiments described below, as long as the characteristics are not contradictory or replaceable with the electric oil pump assembly 1000 according to the first aspect of the present invention, the modifications of the electric oil pump assembly 1000 according to the first aspect of the present invention may be adopted, and the modifications fall within the scope of the present invention, and are not described herein.
Next, referring to fig. 8 to 14, an oil pump assembly 1 and an electric oil pump assembly 1000 having the same according to an embodiment of a second aspect of the present invention will be described.
As shown in fig. 8, an oil pump assembly 1 according to an embodiment of the present invention includes: a pump housing assembly 12 and an oil pumping mechanism 11.
As shown in fig. 8 and 11, the pump housing assembly 12 is provided with an oil suction port 101, a plurality of oil discharge ports 102 and an oil discharge groove 103, the oil discharge groove 103 includes a confluence portion 1031 and a plurality of diverging portions 1032 which correspondingly communicate the confluence portion 1031 to the plurality of oil discharge ports 102, that is, the oil discharge groove 103 includes a confluence portion 1031 and a plurality of diverging portions 1032, the plurality of diverging portions 1032 respectively communicate with the plurality of oil discharge ports 102 in a one-to-one correspondence, each diverging portion 1032 communicates with the confluence portion 1031, after oil in the pump housing assembly 12 is discharged into the confluence portion 1031, the oil can respectively flow to the plurality of oil discharge ports 102 through the plurality of diverging portions 1032, the oil pumping mechanism 11 includes an oil pumping portion 112, and the oil pumping portion 112 is disposed in the pump housing assembly 12 and is used for pumping oil from the oil suction port 101 to the plurality of oil discharge ports 102 through the oil discharge groove 103.
Specifically, in the operation process of the oil pump assembly 1, the oil pumping unit 112 is driven to perform oil pumping operation (for example, the oil pumping unit may be directly driven by the driving shaft 24 described herein to perform rotary oil pumping operation, or the oil pumping unit may be directly driven by the rotating shaft 111 described herein to perform rotary oil pumping operation, etc.), at this time, oil outside the pump shell assembly 12 may be sucked into the pump shell assembly 12 through the oil suction port 101, and then pumped into the confluence portion 1031 of the oil discharge groove 103 through the oil pumping unit 112, and the oil entering the confluence portion 1031 flows to the plurality of oil discharge ports 102 along the plurality of shunting portions 1032, respectively, and then is discharged through the plurality of oil discharge ports 102.
Therefore, according to the oil pump assembly 1 of the embodiment of the invention, since the oil discharge port 102 is provided with a plurality of oil discharge ports, the oil discharge efficiency can be improved, the oil discharge damping at each oil discharge port 102 can be dispersed and reduced, and the working noise of the oil pump assembly 1 can be reduced.
In some embodiments of the present invention, the oil pumping portion 112 performs oil pumping operation by rotating, for example, the oil pumping portion 112 may be an internal gear set, an external gear set, or a rotary impeller as described above, and the plurality of oil discharge ports 102 are spaced apart in a circumferential direction of a rotation axis of the oil pumping portion 112 (e.g., the circumferential direction of the rotation axis of the driving gear 112A and the circumferential direction of the rotation axis of the driven gear 112B as described above) and penetrate in a radial direction of the oil pumping portion 112 (e.g., the radial direction of the rotation axis of the driving gear 112A and the radial direction of the rotation axis of the driven gear 112B as described above), so that oil discharge efficiency may be improved, and oil discharge damping and oil discharge noise may be reduced. Of course, the invention is not limited to this, for example, in other specific examples of the embodiment, the oil pumping part 112 may also pump oil by other manners (for example, swinging, translating, etc.) besides rotating.
In some embodiments of the present invention, as shown in FIG. 8, the pump casing assembly 12 includes: pump body 121 and pump cover 122 that sets up at pump body 121 axial one end, that is to say, pump shell subassembly 12 includes pump body 121 and pump cover 122, defines the open cylindrical cavity 1210 in axial both ends in pump body 121, and pump cover 122 sets up the one end in the axial of cylindrical cavity 1210, and oil drain groove 103 is formed on pump cover 122, and oil drain groove 103 can be by the one side terminal surface that is close to pump body 121 of pump cover 122, the direction concave formation of keeping away from pump body 121 towards for example. Therefore, the processing and the manufacturing are convenient. For example, in the specific example shown in fig. 8, the axis of the pump body 121 extends in the front-rear direction, the front end and the rear end of the pump body 121 are provided with a front pump cover 122A and a rear pump cover 122B, respectively, and the oil discharge groove 103 is formed on the rear pump cover 122B and is formed by the front surface of the rear pump cover 122B being recessed rearward. Here, it should be noted that the direction "front" described herein is a side of the oil pump assembly 1 close to the rotor 23, and the opposite side is "rear", that is, a side of the oil pump assembly 1 away from the rotor 23.
Preferably, as shown in fig. 11, the confluence part 1031 is disposed adjacent to the outer edge 1221 of the pump cover 122, that is, the confluence part 1031 and the outer edge 1221 of the pump cover 122 have a small gap therebetween, for example, the gap may be 1mm to 10 mm; further, the confluence portion 1031 is opposed to the outer edge 1221 in the radial direction of more than half turn (the radial direction of the rotation axis of the drive gear 112A and the radial direction of the rotation axis of the driven gear 112B as described above), that is, in the radial direction of the pump body 121, the confluence portion 1031 is opposed to the outer edge 1221 in the circumferential direction of more than half turn. This ensures a large volume of the oil drain groove 103, thereby further improving oil drain efficiency and reducing oil drain damping and oil drain noise.
In some embodiments of the present invention, as shown in fig. 8 and 11, the oil discharge groove 103 has an axially symmetric shape, and the oil discharge position of the oil pumping portion 112 is opposite to the symmetric axis of the oil discharge groove 103, for example, when the oil pumping portion 112 is an external gear set composed of a driving gear 112A and a driven gear 112B, the starting end where the driving gear 112A and the driven gear 112B are engaged is the oil inlet position of the oil pumping portion 112, and the ending end where the driving gear 112A and the driven gear 112B are engaged is the oil discharge position of the oil pumping portion 112. Therefore, the oil outlet position of the oil pumping part 112 is opposite to the symmetry axis of the oil discharge groove 103, so that the oil entering the oil discharge groove 103 can be symmetrically diffused to the two sides of the symmetry axis at the same speed, the diffusion efficiency can be improved, the oil discharge efficiency can be improved, and the oil discharge damping and the oil discharge noise can be reduced. Moreover, the structure of the oil discharge groove 103 in an axially symmetric shape is simpler, and the processing is more convenient.
In some embodiments of the present invention, the bus part 1031 extends along a smooth curve, or the bus part 1031 extends along a smoothly connected curve and straight line (where the number of the curve and the straight line is at least one). As described above, since the extension line of the confluence part 1031 has no sharp bent portion, the loss caused by the oil liquid flowing inside the extension line and the side wall of the confluence part 1031 colliding with each other sharply can be reduced, and the vibration and noise can be reduced.
As shown in fig. 14, the oil pump assembly 1 according to the present embodiment described above may be used for an electric oil pump assembly 1000.
Specifically, as shown in fig. 8 and 14, an electric oil pump assembly 1000 has an assembly cabin 200 therein, the electric oil pump assembly 1000 has a main oil inlet 201 and a main oil outlet 202 thereon, and the electric oil pump assembly 1000 includes: the motor assembly 2 and the oil pump assembly 1 in the embodiment of the second aspect, the oil pump assembly 1 and the motor assembly 2 are both disposed in the general assembly chamber 200, and the oil pump assembly 1 is driven by the motor assembly 2 to pump oil from the general oil inlet 201 to the general oil outlet 202 (refer to the explanation of the embodiment of the first aspect, and no further description is provided here). Thus, as described above and below, since the oil pump assembly 1 is disposed in the oil-filled assembly compartment 200, it is possible to effectively reduce vibration and noise of the electric oil pump assembly 1000 and to improve the structural compactness of the electric oil pump assembly 1000.
In some embodiments of the present invention, as shown in fig. 14, the general assembly cabin 200 includes a motor cabin 200A and an oil pump cabin 200B (refer to the explanation of the above first aspect embodiment, which is not described herein), the motor cabin 200A communicates with a general oil inlet 201, the oil pump cabin 200B communicates with a general oil outlet 202, wherein the oil pump assembly 1 is disposed in the oil pump cabin 200B, an oil suction port 101 of the oil pump assembly 1 communicates with the motor cabin 200A, and a plurality of oil discharge ports 102 of the oil pump assembly 1 communicate with the oil pump cabin 200B. Thus, as described below, operating noise and vibration of the oil pump assembly 1 can be effectively reduced, thereby reducing pump casing assembly 12 wall thickness, weight, and cost.
In addition, other configurations and other modifications of the electric oil pump assembly 1000 according to the embodiment of the present invention can be referred to above and below, for example, in the electric oil pump assembly 1000 according to the first to tenth embodiments described below, as long as the features of the electric oil pump assembly 1000 according to the second aspect of the present invention are not contradictory or replaceable with the features of the electric oil pump assembly 1000 according to the second aspect of the present invention, and the modifications fall within the scope of the present invention, and are not described herein again.
Next, referring to fig. 22 and 28, an oil pump assembly 1 and an electric oil pump assembly 1000 having the same according to an embodiment of the third aspect of the present invention will be described.
As shown in fig. 22 and 26, the oil pump assembly 1 according to the embodiment of the present invention includes: the pump oil mechanism 11, the pump cover 122, the adapter 15, and the seal ring 14. Here, it should be noted that the pump cover 122 in the third embodiment is preferably a single-bearing pump cover 122M1, but is not limited thereto, and the pump cover 122 in the third embodiment may also be a double-bearing pump cover 122M2, a non-bearing pump cover 122M3, or the like. The following description will only take the pump cover 122 in the third embodiment as the single pump cover 122M1 as an example, and it is obvious to those skilled in the art that the pump cover 122 in the third embodiment is another type of pump cover and beneficial effects thereof after reading the following technical solutions.
As shown in fig. 22 and 26, the oil pumping mechanism 11 includes a rotating shaft portion 111 and an oil pumping portion 112 connected to each other, a single bearing pump cover 122M1 is provided on one axial side of the oil pumping portion 112, that is, in the rotational axis direction of the rotating shaft portion 111, the single bearing pump cover 122M1 is located on one side of the oil pumping portion 112, the single bearing pump cover 122M1 has a bearing hole K1 fitted to the rotating shaft portion 111 to be in sliding friction fit with the axial surface (i.e., the peripheral wall surface) of the rotating shaft portion 111, a socket 15 is provided between the single bearing pump cover 122M1 and the oil pumping portion 112, the socket 15 has a through hole K2 through which the rotating shaft portion 111 passes, and the socket 15 is in sliding friction fit with the end surface (i.e., the axial end surface) of the oil pumping portion 112. Here, the "rotation axis of the rotating shaft portion 111" and the "rotation axis of the oil pumping portion 112" described herein are parallel lines, that is, any straight line parallel to the axis of the driving shaft, the axis of the driven shaft, and the axis of the rotating shaft described above.
Therefore, the rotating shaft part 111 can be in sliding friction fit with the supporting hole K1 on the single bearing pump cover 122M1 after passing through the through hole K2 on the bearing piece 15. In this way, since the oil pumping mechanism 11 supports the rotating shaft 111 radially by means of the single bearing pump cover 122M1 on the one hand and supports the oil pumping part 112 axially by means of the bearing 15 on the other hand, the front bearing seat 13A and the rear bearing seat 13B shown in fig. 4 can be omitted, so that the oil pump assembly 1 has a smaller and more compact structure, lighter weight and lower cost.
It is understood that, as shown in fig. 22, the oil pump assembly 1 may include a pump housing assembly 12, the pump housing assembly 12 may include a pump body 121 and the above-mentioned single-bearing pump cover 122M1, the pump housing assembly 12 has an oil suction port 101 and an oil discharge port 102, and the oil pumping operation is performed by the oil pumping portion 112 during the rotation of the rotating shaft portion 111, at this time, the oil outside the pump housing assembly 12 may be sucked into the pump housing assembly 12 through the oil suction port 101, then flow to the oil discharge port 102 through the oil pumping portion 112, and then be discharged outside the pump housing assembly 12 through the oil discharge port 102.
As shown in figure 22 of the drawings, as shown in fig. 26 and 27, the seal ring 14 is provided between the adaptor 15 and the single bearing pump cover 122M1, the annular space 141 of the seal ring 14 (i.e., the closed space surrounded by the seal ring 14 in the radial direction of the seal ring 14) communicates with one of the oil suction port 101 and the oil discharge port 102 of the oil pump assembly 1 (where, if the oil discharge port 102 is plural, it means that the annular space 141 communicates with either the oil suction port 101 or the oil discharge ports 102), the annular space 142 of the seal ring 14 (i.e., the space located outside the seal ring 14, i.e., the annular space 141 in the radial direction of the seal ring 14) communicates with the other of the oil suction port 101 and the oil discharge port 102 of the oil pump assembly 1 (where, if the oil discharge port 102 is plural, it means that the annular space 142 communicates with either the oil suction port 101 or the oil discharge ports 102), and the pump portion 112 is used for pumping the oil in the annular space 141 to the annular space 142.
That is, the seal ring 14 functions to partition the working chamber of the oil pumping portion 112 (i.e., the cylindrical chamber 1210 in the pump body 121) into a first pressure chamber 100A and a second pressure chamber 100B different in oil pressure, in which the inner annular space 141 is a part of the first pressure chamber 100A and communicates with one of the oil suction port 101 and the oil discharge port 102, and the outer annular space 142 is a part of the second pressure chamber 100B and communicates with the other of the oil suction port 101 and the oil discharge port 102.
As shown in fig. 22 and 28, when the oil suction port 101 communicates with the inner annular space 141 and the oil discharge port 102 communicates with the outer annular space 142, oil may be sucked into the first pressure chamber 100A through the oil suction port 101 during the operation of the oil pumping part 112, and then the oil in the first pressure chamber 100A may be pumped into the second pressure chamber 100B, and then the oil in the second pressure chamber 100B may be discharged through the oil discharge port 102.
As shown in fig. 35 and 40, when the oil suction port 101 communicates with the annular outer space 142 and the oil discharge port 102 communicates with the annular inner space 141, during the operation of the oil pumping part 112, oil may be sucked into the second pressure chamber 100B through the oil suction port 101, and then the oil in the second pressure chamber 100B may be pumped into the first pressure chamber 100A, and then the oil in the first pressure chamber 100A may be discharged through the oil discharge port 102.
Therefore, on one hand, the bearing piece 15 can effectively protect the sealing ring 14, damage to the soft sealing ring 14 when the oil pumping part 112 rotates is avoided, the sealing ring 14 is prevented from losing the sealing function, the isolation effect of the first pressure cavity 100A and the second pressure cavity 100B is ensured to be reliable, and the oil pump assembly 1 can have reliable oil pressure rising performance; on the other hand, when the oil pumping part 112 rotates relative to the adaptor 15 to cause the adaptor 15 to generate friction loss, the sealing ring 14 can exert a pushing force on the adaptor 15 in the direction of the oil pumping part 112 under the action of the self elastic pressing force, so as to ensure that the adaptor 15 can play a reliable axial supporting role on the oil pumping part 112, and prevent the oil pumping part 112 from generating axial movement.
In some embodiments of the present invention, the socket 15 is a metal material with hardness smaller than that of the oil pumping part 112, so that when the oil pumping part 112 rotates relative to the socket 15, sliding friction occurs between the end surface of the oil pumping part 112 and the surface of the socket 15, and since the hardness of the socket 15 is smaller than that of the oil pumping part 112, it is stated that the oil pumping part 112 can wear the socket 15, but the socket 15 cannot wear the oil pumping part 112. Therefore, the socket 15 can effectively protect the oil pumping part 112. In addition, the bearing piece 15 is made of metal material, namely, is made of metal material, so that the bearing piece is convenient to obtain and process, and the bearing piece 15 has good supporting performance and protection performance on the oil pumping part 112 and is low in cost.
Alternatively, the oil pumping part 112 is made of steel, and the receiving member 15 is made of aluminum plate or copper plate, that is, the oil pumping part 112 may be made of steel, and the receiving member 15 may be made of aluminum material or copper material. Therefore, the hardness of the socket 15 can be ensured to be smaller than that of the oil pumping part 112, the oil pumping part 112 can be ensured to work stably and reliably for a long time, the socket 15 can reliably, stably and stably support and protect the oil pumping part 112 for a long time, and the oil pumping part 112 and the socket 15 are convenient to process and obtain and low in cost.
In some embodiments of the present invention, as shown in fig. 22, the end surface of the adaptor 15 on the side facing the oil pumping part 112 has a lubrication groove 104 communicating with the through hole K2. Therefore, oil pumped in or out by the oil pumping part 112 can enter the lubricating groove 104 and enter the through hole K2 along the lubricating groove 104 to be in contact with the rotating shaft part 111 to realize lubrication, and the rotating smoothness of the rotating shaft part 111 is improved.
In some embodiments of the present invention, as shown in fig. 22, the end surface of the adaptor 15 facing the oil pumping part 112 has a turbulent groove 105 disposed opposite to the oil inlet position (explained above) of the oil pumping part 112, that is, the oil on the oil suction side of the oil pumping part 112 can enter into the turbulent groove 105, so that the oil sucked by the oil pump assembly 1 can be disturbed by disposing the turbulent groove 105, thereby reducing the exhaust noise of the oil pump assembly 1.
In some alternative embodiments of the present invention, two single bearing pump covers 122M1 are provided on both axial sides of the pump body 121, and two adapters 15 are provided between the two single bearing pump covers 122M1 and both axial side end faces of the pump oil portion 112 (this example is not shown). Therefore, the oil pump assembly 1 is more modularized and more convenient to install. In other alternative embodiments of the present invention, the single bearing pump cover 122M1 and the bearing 15 are both one and are disposed on the same axial side of the oil pumping portion 112 (as shown in fig. 26). Thus, the oil pump assembly 1 is more compact and more compact.
In some embodiments of the invention, the single bearing pump cover 122M1 has a receiving groove 1222 for mounting the sealing ring 14 thereon, as shown in fig. 22 and 25. This can improve the mounting efficiency and operational reliability of the seal ring 14.
The oil pump assembly 1 according to the present embodiment described above may be used for the electric oil pump assembly 1000.
Specifically, as shown in fig. 22 and 28, an electric oil pump assembly 1000 has a main cabin 200 therein, the main cabin 200 is provided with a main oil inlet 201 and a main oil outlet 202, and the electric oil pump assembly 1000 includes: the motor assembly 2 and the oil pump assembly 1 in the embodiment of the third aspect, the oil pump assembly 1 and the motor assembly 2 are both disposed in the general assembly cabin 200, and the oil pump assembly 1 is connected to the motor assembly 1 to be driven by the motor assembly 2 to realize oil pumping from the main oil inlet 201 to the main oil outlet 202 (refer to the explanation of the embodiment of the first aspect, and no further description is provided here). Thus, as described above and below, since the oil pump assembly 1 is disposed in the oil-filled assembly compartment 200, it is possible to effectively reduce vibration and noise of the electric oil pump assembly 1000 and to improve the structural compactness of the electric oil pump assembly 1000.
In addition, other configurations and other modifications of the electric oil pump assembly 1000 according to the embodiment of the present invention can be referred to above and below, for example, in the electric oil pump assembly 1000 according to the first to tenth embodiments described below, as long as the features of the electric oil pump assembly 1000 according to the third embodiment of the present invention are not contradictory or replaceable with the features of the electric oil pump assembly 1000 according to the third embodiment of the present invention, and the modifications fall within the protection scope of the present invention, and are not described herein again.
Next, referring to fig. 29 to 46, an oil pump assembly 1 and an electric oil pump assembly 1000 having the same according to a fourth aspect embodiment of the present invention will be described.
As shown in fig. 34, 40, and 46, an electric oil pump assembly 1000 according to an embodiment of the present invention includes: the oil pump assembly comprises a general loading cabin 200, an oil pump assembly 1 and a motor assembly 2, wherein the general loading cabin 200 can be a cabin full of oil, and a general oil inlet 201 and a general oil outlet 202 are arranged on the general loading cabin 200.
As shown in fig. 29, 35, 41, 34, 40 and 46, the motor assembly 2 is disposed in the assembly compartment 200, the oil pump assembly 1 is disposed in the assembly compartment 200 and driven by the motor assembly 2 to pump oil, the oil pump assembly 1 includes a pump body 121, and the pump body 121 is cylindrical, and at least one of the oil suction port 101 and the oil discharge port 102 of the oil pump assembly 1 penetrates the pump body 121 in a radial direction of the pump body 121 and in an axial direction of the pump body 121. Here, it should be noted that "the pump body 121 is cylindrical" is to be understood in a broad sense, that is, not limited to a regular cylinder, a square cylinder, or the like, as long as a cylindrical cavity, a tapered cavity, or the like, both ends of which are open, can be defined in the pump body 121, and further, since the oil suction port 101 and/or the oil discharge port 102, which are open, are formed in the pump body 121, the pump body 121 is cylindrical, the peripheral wall of which has a cutout, rather than cylindrical, the peripheral wall of which is closed.
Thus, according to the electric oil pump assembly 1000 of the embodiment of the present invention, since at least one of the oil suction port 101 and the oil discharge port 102 penetrates the cylindrical pump body 121 in the radial and axial directions, the oil suction port 101 and/or the oil discharge port 102 is configured in an open opening shape, not in a porthole shape for connecting with a nipple or the like. Therefore, when the oil suction port 101 is in the open structure, the pump body 121 can directly and quickly suck oil from the oil immersed in the oil through the open oil suction port 101, and when the oil discharge port 102 is in the open structure, the pump body 121 can directly discharge oil into the oil immersed in the oil through the open oil discharge port 102, so that the oil suction and/or oil discharge efficiency of the pump body 121 can be effectively improved, the oil suction and/or oil discharge damping can be reduced, and the local noise can be reduced.
In addition, according to the electric oil pump assembly 1000 of the embodiment of the present invention, since the oil pump assembly 1 is completely disposed in the oil-filled assembly cabin 200 and is wrapped by oil, the wall thickness of the pump body 121 of the oil pump assembly 1 can be reduced as much as possible, so that the weight and the occupied space of the oil pump assembly 1 are reduced, the transmission of working noise to the outside of the oil pump assembly 1 can also be reduced, the sealing requirement of the oil pump assembly 1 can also be reduced, the design and the investment of sealing components can be reduced, and the volume, the weight, the cost and the noise of the electric oil pump assembly 1000 can be further reduced, so that the electric oil pump assembly is more favorable for.
Preferably, the general assembly 200 has the motor assembly 2 and the oil pump assembly 1 both disposed in the general assembly 200, the motor assembly 2 may include a driving shaft 24, the oil pump assembly 1 may further include an oil pumping portion 112 disposed in the pump body 121, and the oil pumping portion 112 is directly or indirectly connected to the driving shaft 24 to be driven by the driving shaft 24 for oil pumping.
Specifically, as shown in fig. 34, 40 and 46, during operation of the electric oil pump assembly 1000, the rotor 23 of the motor assembly 2 drives the driving shaft 24 to rotate relative to the stator 22, the driving shaft 24 drives the oil pumping portion 112 in the oil pumping mechanism 11 connected thereto to operate (for example, the driving shaft 24 may be directly connected to the oil pumping portion 112, and the driving shaft 24 may also be connected to the oil pumping portion 112 through the rotating shaft portion 111 of the oil pumping mechanism 11), during operation of the oil pumping mechanism 11, oil outside the casing 21 may enter the assembly compartment 200 through the main oil inlet 201, oil inside the assembly compartment 200 may enter the pump body 121 through the oil suction port 101, and oil inside the pump body 121 may be discharged from the main oil outlet 202 to the outside of the casing 21 through the oil discharge port 102, or discharged into the assembly compartment 200 through the oil discharge port 102, and then discharged outside the casing 21 through the main oil outlet 202. Here, it is understood that, in the present embodiment, the motor assembly 2 may include the rotor 23 and the stator 22, and the oil pumping mechanism 11 may include the rotating shaft portion 111 or may not include the rotating shaft portion 111.
In some embodiments of the present invention, as shown in fig. 41, both the oil suction port 101 and the oil discharge port 102 penetrate the pump body 121 in the radial direction and the axial direction of the pump body 121, that is, both the oil suction port 101 and the oil discharge port 102 are formed on the side wall of the pump body 121. Therefore, the oil suction and oil discharge device is convenient to process and manufacture, can effectively improve the oil suction and oil discharge efficiency of the pump body 121, can reduce the oil suction and oil discharge damping and reduce local noise.
In some embodiments of the present invention, as shown in fig. 41, the oil suction port 101 and the oil discharge port 102 are disposed opposite to each other in a radial direction of the pump body 121. Therefore, the oil pump assembly is convenient to process and assemble, and the working reliability and effectiveness of the oil pump assembly 1 can be improved. Preferably, the opening width W1 of the oil suction port 101 is equal to the opening width W2 of the oil discharge port 102, thereby facilitating processing and assembly. Here, the "opening length of the oil ports (including the oil suction port 101 and the oil discharge port 102)" herein refers to the opening length of the oil ports in the axial direction of the pump body 121, and since the oil ports penetrate the pump body 121 in the axial direction, the opening length of the oil ports is equal to the axial length of the pump body 121, and the "opening width of the oil ports (including the oil suction port 101 and the oil discharge port 102)" refers to the opening width of the oil ports in the direction perpendicular to the longitudinal direction thereof.
In some embodiments of the present invention, as shown in fig. 29, 35 and 41, when the oil suction port 101 penetrates the pump body 121 in the radial and axial directions, the ratio of the opening width W1 of the oil suction port 101 to the maximum width W of the inner cavity of the pump body 121 is 3/6 to 5/6, and when the oil discharge port 102 penetrates the pump body 121 in the radial and axial directions, the ratio of the opening width W2 of the oil discharge port 102 to the maximum width W of the inner cavity of the pump body 121 is 3/6 to 5/6. From this, through so injecing the open width of hydraulic fluid port on the pump body 121, can ensure on the one hand that the open area of hydraulic fluid port is enough to have good oil absorption and/or oil extraction effect, on the other hand when assembling the pump body 121 and pump oil portion 112, can conveniently assemble, improve assembly efficiency, and improve the holistic structural reliability of oil pump assembly 1.
In some embodiments of the present invention, as shown in fig. 29 and 35, the oil pump assembly 1 further includes a pump cover 122 disposed at one axial end of the pump body 121, where the pump cover 122 may be a non-bearing pump cover 122M3 (shown in fig. 1), a single-bearing pump cover 122M1 (shown in fig. 22), or a double-bearing pump cover 122M2 (shown in fig. 61) as described herein, one of the oil suction port 101 and the oil discharge port 102 is formed on the pump body 121, and the other of the oil suction port 101 and the oil discharge port 102 is formed on the pump cover 122 (i.e., penetrates the pump cover 122 in the axial direction of the pump body 121). Therefore, the pump body 121 is simple in structure and convenient to machine and manufacture.
Specifically, as shown in fig. 34, the assembly cabin 200 includes a motor cabin 200A and an oil pump cabin 200B (here, the oil pump cabin 200B is separately disposed in the motor cabin 200A, that is, the oil pump cabin 200B is not directly communicated with the motor cabin 200A through an oil hole, an oil passage, and the like, that is, the motor cabin 200A wraps the oil pump cabin 200B), the oil pump assembly 1 is disposed in the oil pump cabin 200B, when the oil suction port 101 axially penetrates through the pump cover 122, the motor cabin 200A is communicated with the main oil inlet 201, the oil pump cabin 200B is communicated with the main oil outlet 202, the oil suction port 101 is communicated with the motor cabin 200A, and the oil discharge port 102 is communicated with the oil pump cabin 200B. Therefore, as described below, the working noise and vibration of the oil pump assembly 1 can be effectively reduced, and a sealing ring does not need to be arranged on the outer ring of the oil discharge port 102 (i.e., even if the pump case assembly 12 leaks, the leaked oil directly enters the oil pump chamber 200B and cannot be thrown into the air), so that the wall thickness, weight and cost of the pump case assembly 12 are reduced.
In some embodiments of the present invention, as shown in fig. 40 and 46, the assembly cabin 200 includes a motor cabin 200A 'and an oil pump cabin 200B' (here, the oil pump cabin 200B 'and the motor cabin 200A' may directly communicate through an oil hole, an oil passage, etc., so the assembly cabin 200 may be regarded as an integrated installation cabin 200C, that is, the assembly cabin 200 is not divided into an independent motor cabin 200A and an oil pump cabin 200B), the oil pump assembly 1 is disposed in the oil pump cabin 200B ', the oil suction port 101 communicates with the oil pump cabin 200B' when the oil suction port 101 radially and axially penetrates the pump body 121, and the oil discharge port 102 communicates with the main oil outlet 202 through an oil discharge passage 2110 (where the oil discharge passage 2110 isolates the oil discharge passage 2110 from being disposed in the integrated installation cabin 200C, that is, the oil discharge passage 2110 does not directly communicate with oil in the integrated installation cabin 200C). From this, motor oil pump assembly's simple structure, convenient processing and installation can reduce oil pump subassembly 1's operating noise and vibration in addition equally, and need not to set up the sealing ring (even if pump case subassembly 12 takes place to leak, the fluid of leaking also directly enters into integrated installation cabin 200C, can not get rid of in the air) to pump case subassembly 12 wall thickness, weight and cost have been reduced.
Preferably, as shown in fig. 40 and 46, the flow passage in the integrated installation chamber 200C is configured to flow through the stator 22 of the motor assembly 2 and then to the oil pump assembly 1 after the oil enters the integrated installation chamber 200C through the oil inlet port 201. Therefore, the heat dissipation effect of the motor assembly 2 can be improved by arranging the flow channel in the integrated installation cabin 200C.
In addition, other configurations and other modifications of the electric oil pump assembly 1000 according to the embodiment of the present invention can be referred to above and below, for example, in the electric oil pump assembly 1000 according to the first to tenth embodiments described below, as long as the features of the electric oil pump assembly 1000 according to the fourth embodiment of the present invention are not contradictory or replaceable with the features of the electric oil pump assembly 1000 according to the fourth embodiment of the present invention, and the modifications fall within the protection scope of the present invention, and are not described herein again.
Next, referring to fig. 41 to 53, an oil pump assembly 1 and an electric oil pump assembly 1000 having the same according to an embodiment of a fifth aspect of the present invention will be described.
As shown in fig. 41 and 47, the oil pump assembly 1 according to the embodiment of the present invention includes: pump body 121, pumping mechanism 11, and bearings (dual bearing pump cover 122M2, bearing housing 13 as described herein).
As shown in fig. 41 and 47, the oil pump assembly 1 includes an oil suction port 101 and an oil discharge port 102, a cylindrical cavity 1210 which is open at two ends in the axial direction of the pump body 121 is defined in the pump body 121, the oil pumping mechanism 11 includes a rotating shaft portion 111 and an oil pumping portion 112 which are connected, the oil pumping portion 112 is disposed in the cylindrical cavity 1210 and is used for pumping oil from the oil suction port 101 to the oil discharge port 102, that is, the oil pumping portion 112 performs oil pumping operation during the rotation of the rotating shaft portion 111, so that oil outside the pump housing assembly 12 can be sucked into the oil pump assembly 1 through the oil suction port 101, then flows to the oil discharge port 102 through the oil pumping portion 112, and then is discharged outside the oil pump assembly 1 through the oil discharge port 102.
Specifically, as shown in fig. 41 and 47, the bearing (the double bearing pump cover 122M2 and the bearing seat 13 described herein) is provided on one axial side of the pump oil portion 112 (i.e., the rotation axis of the pump oil portion 112), and the bearing (the double bearing pump cover 122M2 and the bearing seat 13 described herein) has a bearing hole K1 that is fitted to the rotation shaft portion 111, and the bearing (the double bearing pump cover 122M2 and the bearing seat 13 described herein) is, on the one hand, slidably friction-fitted to the shaft surface (i.e., the peripheral wall surface) of the rotation shaft portion 111 (through the bearing hole K1) and, on the other hand, slidably friction-fitted to the end surface (i.e., the axial end surface) of the pump oil portion 112 (through the axial. In this way, since the oil pumping mechanism 11 can support the rotating shaft 111 radially by means of the supporting member (such as the dual-bearing pump cover 122M2 and the bearing seat 13 described herein) and can also support the oil pumping part 112 axially by means of the supporting member (such as the dual-bearing pump cover 122M2 and the bearing seat 13 described herein), the structure of the oil pump assembly 1 is simplified, and the oil pump assembly 1 has a smaller, more compact, lighter and lower cost structure.
In some alternative embodiments of the invention, as shown in fig. 41 and 44, the bearing is a double bearing pump cover 122M2 disposed outside the pump body 121 and covering the axial end of the pump body 121. Thus, the bearing member has a sealing function in addition to the function of supporting the oil pumping mechanism 11, so that the overall operational effect of the oil pump assembly 1 can be further improved, and the mounting efficiency of the oil pump assembly 1 can be improved.
In other alternative embodiments of the present invention, as shown in fig. 47 and 51, the support member is a bearing seat 13 provided in the pump body 121 at an axial end of the pump body 121. Therefore, the axial size of the oil pump assembly 1 can be reduced, and the oil pump assembly 1 can better meet the requirement of miniaturization production.
In some alternative embodiments of the present invention, as shown in fig. 51, the support members (such as the bearing blocks 13 described herein) are two and are respectively supported on both axial sides of the oil pumping mechanism 11. Therefore, the oil pump assembly 1 is simple in structure and high in working reliability.
In other alternative embodiments of the present invention, as shown in FIG. 41, the bearing (such as the dual bearing pump cover 122M2 described herein) is one and is supported on one axial side of the pumping mechanism 11. Therefore, the axial size of the oil pump assembly 1 can be reduced, and the oil pump assembly 1 can better meet the requirement of miniaturization production.
In some embodiments of the present invention, the bearings (e.g., dual bearing pump cover 122M2, bearing housing 13 described herein) are pieces of metal material having a hardness less than that of oil pumping section 112, such that, as oil pumping section 112 rotates relative to the bearings (e.g., dual bearing pump cover 122M2, bearing housing 13 described herein), sliding friction occurs between the end face of oil pumping section 112 and the surfaces of the bearings (e.g., dual bearing pump cover 122M2, bearing housing 13 described herein), which indicates that oil pumping section 112 may wear the bearings (e.g., dual bearing pump cover 122M2, bearing housing 13 described herein) while the bearings (e.g., dual bearing pump cover 122M2, bearing housing 13 described herein) may not wear oil pumping section 112 due to the hardness of the bearings (e.g., dual bearing pump cover 122M2, bearing housing 13 described herein) being less than that of oil pumping section 112. Thus, the bearings (e.g., the dual bearing pump cover 122M2, bearing housing 13 described herein) may provide effective protection for the pump oil 112. In addition, since the supporting members (such as the dual-bearing pump cover 122M2 and the bearing seat 13 described herein) are made of metal materials, that is, are processed by using metal materials, the supporting members (such as the dual-bearing pump cover 122M2 and the bearing seat 13 described herein) are easy to obtain and process, and have good supporting performance and good protection performance for the pump oil portion 112, and low cost.
Alternatively, the pump oil portion 112 is steel, and the support members (e.g., the dual-bearing pump cover 122M2, the bearing seat 13 described herein) are aluminum or copper plates, that is, the pump oil portion 112 may be machined from steel, and the support members (e.g., the dual-bearing pump cover 122M2, the bearing seat 13 described herein) may be machined from aluminum or copper. Thus, it is possible to ensure that the hardness of the bearing (such as the double bearing pump cover 122M2, bearing housing 13 described herein) is less than the hardness of the pump oil section 112, ensuring that the pump oil section 112 can operate stably and reliably for a long period of time, and that the bearing (such as the double bearing pump cover 122M2, bearing housing 13 described herein) can support and protect the pump oil section 112 reliably, stably and for a long period of time, and that the pump oil section 112 and the bearing (such as the double bearing pump cover 122M2, bearing housing 13 described herein) are easy to manufacture and obtain at low cost.
In some embodiments of the present invention, the end surface of the bearing (e.g., the double bearing pump cover 122M2, the bearing seat 13 described herein) facing the pump oil portion 112 has a lubrication groove (not shown) communicating with the bearing hole K1. Therefore, oil pumped in or out by the oil pumping part 112 can enter the lubricating groove, and enters the through hole K2 along the lubricating groove to be in contact with the rotating shaft part 111 to realize lubrication, so that the rotating smoothness of the rotating shaft part 111 is improved.
In some embodiments of the present invention, the end surface of the support (the double bearing pump cover 122M2, the bearing seat 13 as described herein) facing the oil pumping part 112 has a turbulence groove (not shown) disposed opposite to the oil inlet position (explained above) of the oil pumping part 112, that is, the oil on the oil suction side of the oil pumping part 112 can enter into the turbulence groove, so that the oil sucked by the oil pump assembly 1 can be disturbed by disposing the turbulence groove, thereby reducing the exhaust noise of the oil pump assembly 1.
The oil pump assembly 1 according to the present embodiment described above may be used for the electric oil pump assembly 1000.
Specifically, as shown in fig. 46 and 53, the electric oil pump assembly 1000 includes a main cabin 200, the main cabin 200 is provided with a main oil inlet 201 and a main oil outlet 202, the motor assembly 2 is disposed in the main cabin 200 and includes a driving shaft, the oil pump assembly 1 is the oil pump assembly 1 according to the fifth aspect of the present embodiment, and the oil pump assembly 1 is disposed in the main cabin 200 and is connected to the driving shaft 24 to pump oil from the main oil inlet 201 to the main oil outlet 202. Thus, as described above and below, since the oil pump assembly 1 is disposed in the oil-filled assembly compartment 200, it is possible to effectively reduce vibration and noise of the electric oil pump assembly 1000 and to improve the structural compactness of the electric oil pump assembly 1000.
In some embodiments of the present invention, as shown in fig. 51 and 53, electric oil pump assembly 1000 includes end cap 21, at least a portion of end cap 21 is located in assembly compartment 200 and supports drive shaft 24, and when the support member is bearing seat 13 provided in pump body 121 and located at an axial end of pump body 121, end 2431 of pump body 121 where bearing seat 13 is located is covered by end cap 211. This improves the operational reliability of the pump body 121 assembly.
In addition, other configurations and other modifications of the electric oil pump assembly 1000 according to the embodiment of the present invention can be referred to above and below, for example, in the electric oil pump assembly 1000 according to the first to tenth embodiments described below, as long as the features of the electric oil pump assembly 1000 according to the fifth embodiment of the present invention are not contradictory or replaceable with the features of the electric oil pump assembly 1000 according to the fifth embodiment of the present invention, and the modifications fall within the protection scope of the present invention, and are not described herein again.
Next, referring to fig. 54 to 67, an oil pump assembly 1 and an electric oil pump assembly 1000 having the same according to a sixth aspect of the present invention will be described.
As shown in fig. 60 and 67, an electric oil pump assembly 1000 according to an embodiment of the present invention includes: the general assembly 200, the oil pump assembly 1 and the motor assembly 2.
As shown in fig. 54 and 60, and fig. 61 and 67, the motor assembly 2 is disposed in the assembly compartment 200, the motor assembly 2 includes an end cover 211 and a driving shaft 24, the end cover 211 supports the driving shaft 24, a support hole is formed in the end cover 211, the oil pump assembly 1 is disposed in the assembly compartment 200 and includes an oil pumping mechanism 11, the oil pumping mechanism 11 includes a rotating shaft portion 111 and an oil pumping portion 112 connected to each other, the rotating shaft portion 111 is rotatably disposed in the support hole, and the end cover 211 is in sliding friction fit with a shaft surface (i.e., a peripheral wall surface) of the rotating shaft portion 111 through the support hole. That is, the oil pumping mechanism 11 can radially support the rotating shaft portion 111 by the end cover 211.
Therefore, according to the electric oil pump assembly 1000 of the embodiment of the present invention, since the rotating shaft portion 111 of the oil pump assembly 1 is supported by the end cover 211 of the motor assembly 2, a supporting member (such as the dual-bearing pump cover 122M2 and the bearing seat 13 described herein) of the oil pump assembly 1 itself for supporting the rotating shaft portion 111 can be omitted, so that the axial length of the oil pump assembly 1 is reduced, and further the connection distance between the motor assembly 2 and the oil pump assembly 1 can be reduced, so that the electric oil pump assembly 1000 has a smaller and more compact structure, lighter weight, lower cost, and is more convenient for vehicle carrying.
In some preferred embodiments of the present invention, the electric oil pump assembly 1000 may include a housing assembly including a casing 21 and the casing 21, the casing 21 defines a total loading chamber 200 filled with oil in the casing 21, the total loading chamber 200 has a total oil inlet 201 and a total oil outlet 202, a rotor 23 is connected to a driving shaft 24 and both disposed in the total loading chamber 200, the motor assembly 2 may include a rotor 23 and a stator 22, the rotor 23 is rotatable relative to the stator 22 and connected to the driving shaft 24, and the pumping oil portion 112 is disposed on a side of the end cover 211 away from the rotor 23, that is, the rotor 23 and the pumping oil portion 112 are distributed on both sides of the end cover 211.
Specifically, in the working process of the electric oil pump assembly 1000, the rotor 23 drives the driving shaft 24 to rotate relative to the stator 22, the driving shaft 24 is connected to the rotating shaft portion 111 to (directly or indirectly) drive the rotating shaft portion 111 (including the driving shaft, the driven shaft, and the rotating shaft described above) to rotate, in the rotating process of the rotating shaft portion 111, the oil pumping portion 112 pumps oil, in the working process of the oil pumping mechanism 11, oil outside the casing 21 can enter the assembly cabin 200 through the main oil inlet 201, and oil inside the assembly cabin 200 can be discharged outside the casing 21 through the main oil outlet 202. Here, it is understood that in the present embodiment, the motor assembly 2 may include a stator 22 and a driving shaft 24.
In addition, according to the electric oil pump assembly 1000 of the embodiment of the present invention, since the oil pump assembly 1 is completely disposed in the oil-filled assembly cabin 200 and is wrapped by oil, the wall thickness of the pump body 121 of the oil pump assembly 1 can be reduced as much as possible, so that the weight and the occupied space of the oil pump assembly 1 are reduced, the transmission of working noise to the outside of the oil pump assembly 1 can also be reduced, the sealing requirement of the oil pump assembly 1 can also be reduced, the design and the investment of sealing components can be reduced, and the volume, the weight, the cost and the noise of the electric oil pump assembly 1000 can be further reduced, so that the electric oil pump assembly is more favorable for.
In some embodiments of the present invention, as shown in fig. 60 and 67, end cap 211 is a sliding friction fit (via its axial end face) with the end face (i.e., axial end face) of pump oil portion 112. That is, the oil pumping unit 112 may be axially supported in addition to the radial support of the rotating shaft unit 111 by the end cover 211. Therefore, the overall structure of the oil pump assembly 1 and the electric oil pump assembly 1000 can be further simplified, and the structure is more compact and simpler.
In some embodiments of the present invention, end cover 211 is a metal material having a hardness less than that of oil pumping part 112, so that when oil pumping part 112 rotates relative to end cover 211, sliding friction occurs between the end surface of oil pumping part 112 and the surface of end cover 211, and since the hardness of end cover 211 is less than that of oil pumping part 112, it indicates that oil pumping part 112 can wear end cover 211, but end cover 211 cannot wear oil pumping part 112. Thus, the end cover 211 can effectively protect the oil pumping part 112. In addition, the end cover 211 is made of metal material, namely, is processed by metal material, so that the end cover is convenient to obtain and process, and the end cover 211 has good supporting performance and protection performance on the oil pumping part 112 and low cost.
Alternatively, the oil pumping part 112 is made of steel, and the end cover 211 is made of aluminum or copper, that is, the oil pumping part 112 may be made of steel, and the end cover 211 may be made of aluminum or copper. Therefore, the hardness of the end cover 211 is ensured to be smaller than that of the oil pumping part 112, the oil pumping part 112 can be ensured to work stably and reliably for a long time, the end cover 211 can support and protect the oil pumping part 112 reliably, stably and for a long time, and the oil pumping part 112 and the end cover 211 are convenient to process and obtain and low in cost.
In some embodiments of the present invention, the end surface of the end cover 211 facing the oil pumping part 112 has a lubrication groove (not shown) communicating with the bearing hole K1. Therefore, oil pumped in or out by the oil pumping part 112 can enter the lubricating groove, and enters the through hole K2 along the lubricating groove to be in contact with the rotating shaft part 111 to realize lubrication, so that the rotating smoothness of the rotating shaft part 111 is improved.
In some embodiments of the present invention, the end surface of the end cover 211 facing the oil pumping part 112 has a turbulence groove (not shown) opposite to the oil inlet position (explained above) of the oil pumping part 112, that is, the oil on the oil suction side of the oil pumping part 112 can enter into the turbulence groove, so that the oil sucked by the oil pump assembly 1 can be disturbed by the turbulence groove, thereby reducing the exhaust noise of the oil pump assembly 1.
Of course, the present invention is not limited to this, and in some other embodiments of the present invention, the above-mentioned socket 15 may be further provided between the end cover 211 and the oil pumping part 112, the socket 15 has a through hole K2 for the rotating shaft part 111 to pass through, and the socket 15 is in sliding friction fit with the end surface of the oil pumping part 112 (this example is not shown in the figure), and at this time, the end cover 211 does not directly axially support the oil pumping part 112. Therefore, the socket 15 can effectively protect the end cover 211, and the processing difficulty of the end cover 211 is reduced.
In some alternative embodiments of the present invention, as shown in fig. 61 and 67, a double bearing pump cover 122M2 is provided on a side of the oil pumping unit 112 away from the end cover 211, a bearing hole K1 for engaging with the rotating shaft unit 111 is provided on the double bearing pump cover 122M2, and the double bearing pump cover 122M2 is in sliding friction engagement with, on one hand, a shaft surface of the rotating shaft unit 111 protruding to a side of the oil pumping unit 112 away from the end cover 211 and, on the other hand, an end surface of the oil pumping unit 112 away from the end cover 211. That is, the oil pumping mechanism 11 axially supports the oil pumping unit 112 by the double bearing pump cover 122M2, radially supports the shaft unit 111 by the double bearing pump cover 122M2, and seals the end 2431 of the oil pump assembly 1 by the double bearing pump cover 122M 2. Thereby, the entire structure of the oil pump assembly 1 can be simplified.
In other alternative embodiments of the present invention, as shown in fig. 54 and 60, a single bearing pump cover 122M1 is disposed on a side of the oil pumping unit 112 away from the end cover 211, a joint 15 is disposed between the single bearing pump cover 122M1 and the oil pumping unit 112, a bearing hole K1 engaged with the rotating shaft 111 is disposed on the single bearing pump cover 122M1, a through hole K2 through which the rotating shaft 111 passes is disposed on the joint 15, the single bearing pump cover 122M1 is in sliding friction engagement with a shaft surface of the rotating shaft 111 protruding to a side of the oil pumping unit 112 away from the end cover 211, and the joint 15 is in sliding friction engagement with an end surface of the oil pumping unit 112 away from the end cover 211. That is, the oil pumping mechanism 11 axially supports the oil pumping unit 112 through the socket 15, radially supports the shaft 111 through the single bearing pump cover 122M1, and seals the end 2431 of the oil pump assembly 1 through the single bearing pump cover 122M 1. Thereby, the entire structure of the oil pump assembly 1 can be simplified.
In still other alternative embodiments of the present invention, as shown in fig. 1 and 7, a non-bearing pump cover 122M3 is disposed on a side of the oil pumping unit 112 away from the end cover 211, and a bearing seat 13 is disposed between the non-bearing pump cover 122M3 and the oil pumping unit 112, where the bearing seat 13 is in sliding friction fit with, on one hand, a shaft surface of the rotating shaft unit 111 protruding to a side of the oil pumping unit 112 away from the end cover 211, and on the other hand, an end surface of the oil pumping unit 112 away from the end cover 211. That is, the oil pumping mechanism 11 axially supports the oil pumping unit 112 through the bearing seat 13, radially supports the rotating shaft 111 through the bearing seat 13, and seals the end 2431 of the oil pump assembly 1 by the non-bearing pump cover 122M 3. Thereby, the entire structure of the oil pump assembly 1 can be simplified.
Briefly, the "dual bearing pump cover 122M 2", "single bearing pump cover 122M 1", and "non-bearing pump cover 122M 3" described herein are identical in that: the end 2431 of the oil pump assembly 1 can be sealed, with the difference that: the double bearing pump cover 122M2 can support the pump oil section 112 and the rotating shaft section 111 in both the axial direction and the radial direction, the single bearing pump cover 122M1 can support the rotating shaft section 111 only in the radial direction, and the non-bearing pump cover 122M3 cannot support the pump oil section 112 and the rotating shaft section 111. In addition, the "bearing seat 13" described herein differs from the "double bearing pump cover 122M 2" in that: the bearing housing 13 cannot seal the end 2431 of the oil pump assembly 1, but can doubly support the pump oil portion 112 and the rotating shaft portion 111 in the axial and radial directions, respectively. Furthermore, the "bearing seat 13" described herein differs from the "socket 15" in that: the socket 15 can support the pump oil portion 112 only in a single axial direction.
In addition, other configurations and other modifications of the electric oil pump assembly 1000 according to the embodiment of the present invention can be referred to above and below, for example, in the electric oil pump assembly 1000 according to the first to tenth embodiments described below, as long as the features of the electric oil pump assembly 1000 according to the sixth embodiment of the present invention are not contradictory or replaceable with the features of the electric oil pump assembly 1000 according to the sixth embodiment of the present invention, and the modifications fall within the scope of the present invention, and are not described herein again.
Next, a vehicle X according to a seventh embodiment of the invention is described.
As shown in fig. 68, a vehicle X according to an embodiment of the present invention includes the electric oil pump assembly 1000 of the above embodiment. Specifically, the electric oil pump assembly 1000 may be used for a steering system and/or a lubrication system of the vehicle X. When the electric oil pump assembly 1000 according to the embodiment of the invention is used in a steering system, oil output from the main oil outlet 202 by the electric oil pump assembly 1000 can drive the transverse rod to displace through the piston push rod of the steering power cylinder to realize steering, so that the structural compactness, steering controllability, working stability and the like of the steering system can be improved. When the electric oil pump assembly 1000 according to the embodiment of the present invention is used in a lubrication system, the electric oil pump assembly 1000 may pump lubricating oil into a system requiring lubrication, and thus, the structural compactness and the operational stability of the lubrication system may be improved.
Thus, according to the vehicle X of the embodiment of the present invention, by providing the electric oil pump assembly 1000 of the above embodiment, since the electric oil pump assembly 1000 has the advantages of compact structure, low cost, low noise, light weight, and the like, the overall performance of the vehicle X can be greatly improved. In addition, other configurations of the vehicle X according to the embodiment of the present invention, such as the vehicle body and the air conditioning system, etc., and the operation thereof are known to those skilled in the art, and will not be described in detail herein.
Next, referring to fig. 1 to 67, an oil pump assembly 1 and an electric oil pump assembly 1000 having the same according to various embodiments of the present invention will be described.
Example one
Referring to fig. 1 to 7, the electric oil pump assembly 1000 includes a housing 21, an oil pump assembly 1, and a motor assembly 2.
In the first embodiment, the housing 21 is used for accommodating the oil pump assembly 1 and the motor assembly 2, an overall assembly chamber 200 filled with oil is defined in the housing 21, when the overall assembly chamber 200 includes a motor chamber 200A and an oil pump chamber 200B, the motor chamber 200A and the oil pump chamber 200B are not directly communicated through an oil hole or an oil passage, the motor assembly 2 is disposed in the motor chamber 200A, and the oil pump assembly 1 is disposed in the oil pump chamber 200B.
As shown in fig. 1 to 5, the oil pump assembly 1 includes an oil pumping mechanism 11, a pump housing assembly 12, a bearing seat 13, and a sealing ring 14, wherein the oil pumping mechanism 11 includes a rotating shaft 111 and an oil pumping portion 112, wherein the rotating shaft 111 includes a driving shaft 111A and a driven shaft 111B, the oil pumping portion 112 includes a driving gear 112A and a driven gear 112B, the pump housing assembly 12 includes a pump body 121 and a pump cover 122, the pump cover 122 includes a front pump cover 122A and a rear pump cover 122B, both the front pump cover 122A and the rear pump cover 122B are non-bearing pump covers 122M3 without a support function, the bearing seat 13 includes a front bearing seat 13A and a rear bearing seat 13B, and the sealing ring 14 includes a front sealing ring 14A and a rear sealing ring.
As shown in fig. 1 to 5, the pump body 121 is a cylindrical shape with two open ends, an axis of the pump body 121 extends in the front-rear direction to ensure that the front end and the rear end of the pump body 121 are open respectively, the front pump cover 122A covers the front end of the pump body 121, the rear pump cover 122B covers the rear end of the pump body 121, so that a working cavity is formed between the front pump cover 122A, the pump body 121, and the rear pump cover 122B, the front pump cover 122A has an oil suction port 101 penetrating in the front-rear direction and communicating with the working cavity, the rear pump cover 122B has an oil discharge port 102 penetrating in the front-rear direction and communicating with the working cavity, and the oil suction port 101 is not directly opposite to the oil discharge port 102 in the axial direction of the pump body. The front pump cover 122A, the pump body 121, and the rear pump cover 122B may be fixedly connected by two bolts 16 that are disposed opposite to each other and extend in the axial direction.
As shown in fig. 1-5, the driving gear 112A and the driven gear 112B in the oil pumping unit 112 are engaged with each other and disposed in the working chamber, and the rotation axis of the driving gear 112A and the rotation axis of the driven gear 112B are parallel to the axis of the pump body 121, wherein the driving gear 112A and the driving shaft 111A may be connected or integrated, the driven gear 112B and the driven shaft 111B may be connected or integrated, the driving shaft 111A has a shaft hole 1121, and the end 2431 of the driving shaft 24 is inserted into the shaft hole 1121.
As shown in fig. 1 to 5, a front bearing housing 13A is provided between the pump oil portion 112 and the front pump cover 122A and supports, on the one hand, the axial surface of the drive shaft 111A and the axial surface of the driven shaft 111B, and on the other hand, the front end surface of the drive gear 112A and the front end surface of the driven gear 112B, and a rear bearing housing 13B is provided between the pump oil portion 112 and the rear pump cover 122B and supports, on the one hand, the axial surface of the drive shaft 111A and the axial surface of the driven shaft 111B, and on the other hand, the rear end surface of the drive gear 112A and the rear end surface of. By "bearing" herein is meant a sliding friction fit between two components that rotate relative to each other.
As shown in fig. 1 to 5, the front seal ring 14A is disposed between the front bearing seat 13A and the front pump cover 122A, the rear seal ring 14B is disposed between the rear bearing seat 13B and the rear pump cover 122B, and in axial projection of the pump body 121, the front seal ring 14A and the rear seal ring 14B are overlapped, the oil suction port 101 falls within a ring of the front seal ring 14A and the rear seal ring 14B, and the oil discharge port 102 falls outside the ring of the front seal ring 14A and the rear seal ring 14B, so that the working chamber is divided into a first pressure chamber 100A communicating with the oil suction port 101 and a second pressure chamber 100B communicating with the oil discharge port 102, and oil in the first pressure chamber 100A can be pumped into the second pressure chamber 100B under the meshing action of the driving gear 112A and the driven gear 112B.
Thus, as shown in fig. 1 to 5, when the driving shaft 24 drives the oil pumping part 112 to operate, oil may enter the first pressure chamber 100A through the oil suction port 101 of the front pump cover 122A, and then be pumped into the second pressure chamber 100B by the meshing action of the driving gear 112A and the driven gear 112B, and then be discharged through the oil discharge port 102 of the rear pump cover 122B.
As shown in fig. 1-7, the motor assembly 2 includes a stator 22, a rotor 23, and a driving shaft 24, wherein the driving shaft 24 is a hollow shaft, the driving shaft 24 has a central blind hole 2401 extending along an axial direction thereof and penetrating through an end surface of one side of the driving shaft 24, the driving shaft 24 is horizontally arranged, that is, an axial line thereof is arranged along a front-rear direction, and a rear end of the driving shaft 24 has a radial oil hole 2402 communicating with the central blind hole 2401.
As shown in fig. 1 to 7, the motor assembly 2 includes an end cover 211 (supported by a rolling bearing 28, for example) for supporting the driving shaft 24, the casing 21 includes a front casing portion 212 and a rear casing portion 213 mounted on front and rear sides of the end cover 211, the front casing portion 212 and the rear casing portion 213 define therebetween the general cabin 200, the casing 21 further includes a cover plate 214 located in the rear casing portion 213 and mounted on a rear side of the end cover 211, an oil pump compartment 200B for accommodating the oil pump assembly 1 is defined between the cover plate 214 and the end cover 211, the portion of the general cabin 200 other than the oil pump compartment 200B is a motor compartment 200A for accommodating the stator 22 and the rotor 23, a front end of the driving shaft 24 is located in the motor compartment 200A and connected to the rotor 23, and a rear end of the driving shaft 24 extends into the oil pump compartment 200B and is spline-inserted and coupled.
As shown in fig. 1-7, the oil pump assembly 1 is floatingly mounted to the end cover 211 in the oil pump compartment 200B, for example, the oil pump assembly 1 may pre-position the front pump cover 122A on the end cover 211 by two positioning pins 17 that are oppositely arranged and extend along the axial direction thereof (instead of fixing the front pump cover 122A on the end cover 211 by screws), a pre-compression spring 25 (e.g., a coil spring, a wave spring, and a disc spring) is disposed between the cover plate 214 and the rear pump cover 122B, and the pre-compression spring 25 is used for pre-compressing the oil pump assembly 1 on the end cover 211 to prevent a gap between the front pump cover 122A and the end cover 211 when the electric oil pump assembly 1000 is started, so that oil in the motor compartment 200A directly enters the oil pump compartment 200B and cannot enter the oil pump assembly 1 through the oil suction port 101. In addition, in order to further improve the sealing effect between the oil pump assembly 1 and the end cover 211 and ensure that the oil in the motor compartment 200A can be smoothly sucked into the working chamber from the oil suction port 101, a sealing device 18 may be provided between the end cover 211 and the front pump cover 122A.
Moreover, because the oil pump assembly 1 is installed in a floating manner and is not fixed on the end cover 211, the oil pump assembly 1 can move in a translation manner in the installation plane, so that when the driving shaft 24 rotates, the rotating component of the motor assembly 2 and the rotating component of the oil pump assembly 1 can be self-adaptively centered (for example, in the first embodiment, the driving shaft 24 and the driving shaft 111A are self-adaptively centered, and in the later embodiment, the driving shaft 24, the coupling 27 and the driving shaft 111A are self-adaptively centered), thereby reducing the working noise. Moreover, after the oil pump assembly 1 operates, oil output by the oil pump assembly 1 can be poured into the oil pump chamber 200B, so that high pressure can be generated, the oil pump assembly 1 is pressed on the end cover 211 in a forward direction, the oil pump assembly 1 can absorb oil more reliably through the oil suction port 101, and the operation of the oil pump assembly 1 is more stable and reliable.
As shown in fig. 1-7, the casing 21 has a main oil inlet 201 and a main oil outlet 202, wherein the main oil inlet 201 and the main oil outlet 202 can be both disposed on the end cover 211 and distributed at intervals in the circumferential direction of the casing 21, the main oil inlet 201 is communicated with the motor compartment 200A, and the main oil outlet 202 is communicated with the oil pump compartment 200B.
Preferably, as shown in fig. 6-7, the main oil inlet 201 may be disposed at the highest point of the casing 21, so that when oil flows into the casing 21 from the main oil inlet 201, gas in the casing 21 is facilitated to be discharged from the main oil inlet 201 (the solid line with an arrow represents the flow direction of the oil, and the dotted line with an arrow represents the flow direction of the gas), and the main oil outlet 202 may be disposed at any height position of the casing 21.
Preferably, as shown in fig. 6-7, the peripheral wall surface of the rear shell portion 213 is designed to be a conical surface and is transversely installed, so that the rear shell portion 213 can have a guiding function, so that the residual gas inside the housing 21 can be better discharged from the main oil inlet 201 along the conical surface, and the structural feature thereof facilitates the operation of the electric oil pump assembly 1000 to completely discharge the residual gas inside the housing 21.
As shown in fig. 6-7, an oil baffle 26 is disposed between the stator 22 and the end cover 211, so as to avoid the problem that oil entering the motor compartment 200A from the main oil inlet 201 is directly sucked into the oil pump assembly 1 through the oil suction opening 101, so as to ensure that the oil entering from the main oil inlet 201 can effectively circulate in the front shell portion 212 and the rear shell portion 213, that is, ensure that the oil entering from the oil inlet can pass through an oil passage on the motor assembly 2 (for example, the oil passage can be a gap between the stator 22 and the front shell portion 212, or a gap between the rear shell portion 213 and the end cover 211 and the cover plate 214, and the oil passage can be one or more and can extend in the axial direction of the driving shaft 24), and ensure that the oil can enter the oil suction opening 101 through the central blind hole 2401 on the driving shaft 24, thereby ensuring that the motor assembly 2 can obtain a good heat.
Thus, when the electric oil pump assembly 1000 is in operation, the oil pumping portion 112 is in operation, oil outside the housing 21 can enter the motor compartment 200A from the main oil inlet 201 and then flow to the oil suction port 101 of the oil pump assembly 1 through the central blind hole 2401 and the radial oil holes 2402 on the driving shaft 24, the oil pumping portion 112 pumps the oil from the oil suction port 101 into the pump body 121 and pumps the oil from the oil discharge port 102 into the oil pump compartment 200B outside the pump body 121, and then the oil can be discharged outside the housing 21 through the main oil outlet 202 communicated with the oil pump compartment 200B. Here, it is understood that the oil may enter the gap between the stator 22, the rotor 23, the driving shaft 24, the oil deflector 26, etc. after flowing into the casing 21, but the above-mentioned general flow direction of the oil is not affected.
Thus, according to the electric oil pump assembly 1000 of the present embodiment, since the housing 21 is filled with the oil, all the components of the electric oil pump assembly 1000 except the housing 21 are immersed in the oil (of course, the housing 21 may be immersed in the oil), so that the noise of the moving components can be effectively reduced. Here, it can be understood that there are two noise sources generally when the electric oil pump assembly 1000 operates, one is noise of the oil pump assembly 1, and the other is noise of the motor assembly 2, the oil pump assembly 1 is wrapped in the oil pump compartment 200B, the oil pump compartment 200B is included in the motor compartment 200A, when the oil pump assembly 1 operates, the oil pump compartment 200B and the motor compartment 200A are both filled with oil, noise when the oil pump assembly 1 operates passes through multiple barriers such as the oil pump compartment 200B, the motor compartment 200A, the pump body 121 and the casing 21, and noise of the motor oil pump assembly can be greatly reduced, and because the motor compartment 200A wraps the oil pump compartment 200B, oil pulsation output by the oil pump assembly 1 can be effectively reduced.
Therefore, according to the electric oil pump assembly 1000 of the present embodiment, since the oil in the casing 21 is circulated, the heat dissipation of the whole machine is facilitated. Here, it can be understood that, when the casing 21 is filled with flowing oil, the stator 22 and the rotor 23 can be fully contacted with the oil, and the heat capacity of the oil is large, so that the local high temperature of the stator 22 and the rotor 23 caused by the load fluctuation can be improved, and the flowing oil can provide heat dissipation and lubrication for other moving parts at the same time, thereby reducing the overall operation noise of the electric oil pump assembly 1000.
In summary, according to the electric oil pump assembly 1000 of the embodiment of the present invention, since the oil pump assembly 1 is installed in the oil pump compartment 200B with high oil pressure, that is, the periphery of the oil pump assembly 1 is wrapped by high-pressure oil, the following advantages are provided: (1) the wall thickness of the pump body 121 can be reduced as much as possible in design, and the weight of the oil pump assembly 1 is reduced; (2) pulsation and noise of the oil pump assembly 1 can be reduced; (3) the oil pressure of the inner side and the outer side of the oil discharge port 102 of the oil pump assembly 1 is equal, and no sealing ring is required to be additionally arranged on the outer ring of the oil discharge port 102, so that the wall thickness of the pump body 121 can be reduced as much as possible, and the cost and the weight are effectively reduced. In addition, because the driving shaft 24 of the motor assembly 2 is connected with the oil pumping mechanism 11 of the oil pump assembly 1 by the spline, the connection distance between the motor assembly 2 and the oil pump assembly 1 can be effectively reduced, and the weight of the electric oil pump assembly 1000 is reduced. In short, according to the electric oil pump assembly 1000 of the embodiment of the present invention, since the oil pump component 1 is disposed inside the motor component 2, the noise of the electric oil pump assembly 1000 can be effectively reduced, so that the structure of the electric oil pump assembly 1000 is more integrated and compact.
Example two
As shown in fig. 8 to 14, the present embodiment has substantially the same structure as the first embodiment, wherein the same reference numerals are used for the same components, except that: the drive shaft 24 and the oil pumping mechanism 11 are connected in different manners, and the oil discharge port 102 of the oil pump assembly 1 is arranged in different manners.
Referring to fig. 8 to 14, the drive shaft 24 is coupled to the rotary shaft portion 111 (e.g., the drive shaft 111A) of the oil pumping mechanism 11 via a coupling 27. The coupling 27 may be a compact coupling (i.e., a coupling having a compact structure), and may be, for example, a slider-type compact coupling, a contact-type compact coupling, or a gear-type compact coupling.
Referring to fig. 8 to 14, the plurality of oil discharge ports 102 are distributed on the rear pump cover 122B at intervals in the circumferential direction of the oil pumping unit 112, and penetrate through the circumferential wall of the pump cover 122 in the radial direction of the oil pumping unit 112, and the rear pump cover 122B further has an oil discharge groove 103, and the oil discharge groove 103 includes a merging portion 1031 communicating with the oil discharge position of the oil pumping unit 112, and a plurality of flow dividing portions 1032 communicating between the merging portion 1031 and the plurality of oil discharge ports 102. Therefore, in the present embodiment, the oil discharge mode of the oil pump assembly 1 is to discharge oil through the oil discharge groove 103 on the rear pump cover 122B, so that the oil discharge damping can be dispersed, and the local noise can be reduced.
EXAMPLE III
As shown in fig. 15 to 21, the present embodiment has substantially the same structure as the second embodiment, wherein the same reference numerals are used for the same components, except that: the front support scheme of the oil pumping mechanism 11 is different.
Referring to fig. 15 to 21, the front side of the pump oil section 112 does not have the front bearing base 13A, and the front pump cover 122A is replaced by a double bearing pump cover 122M 2. Therefore, the front end of the driving shaft 111A and the front end of the driven shaft 111B can be supported by the double bearing pump cover 122M2, and the volume of the oil pump assembly 1 can be further reduced, thereby reducing the cost.
Example four
As shown in fig. 22 to 28, the present embodiment has substantially the same structure as the third embodiment, wherein the same reference numerals are used for the same components, except that: the rear support scheme of the oil pumping mechanism 11 is different.
Referring to fig. 22 to 28, the rear bearing block 13B on the rear side of the pump oil section 112 is replaced by the adaptor 15, and the rear pump cover 122B is replaced by the single-bearing pump cover 122M1, so that the volume of the oil pump assembly 1 can be further reduced, and the cost can be reduced.
EXAMPLE five
As shown in fig. 29 to 34, the present embodiment has substantially the same structure as the fourth embodiment, in which the same reference numerals are used for the same components, except that: the oil discharge port 102 of the oil pump assembly 1 is disposed at different positions.
Referring to fig. 29 to 34, the oil discharge port 102 of the rear pump cover 122B is eliminated, the oil discharge port 102 is provided in the pump body 121, the oil discharge port 102 penetrates the pump body 121 in the axial direction and the radial direction to form an open structure, and the oil pumped up by the pump oil portion 112 is directly discharged into the oil pump compartment 200B through the open oil discharge port 102, so that the oil discharge damping at the oil discharge port 102 is greatly reduced, and the local noise is reduced.
EXAMPLE six
As shown in fig. 35 to 40, the present embodiment has substantially the same structure as the fourth embodiment, in which the same reference numerals are used for the same components, except that: the oil suction port 101 and the oil discharge port 102 of the oil pump assembly 1 are arranged at different positions, the layout mode of the oil pump assembly 1 in the motor assembly 2 is different, the structure of the driving shaft 24 is different, and the arrangement positions of the main oil inlet 201 and the main oil outlet 202 are different.
Referring to fig. 35 to 40, the oil suction port 101 of the front pump cover 122A is eliminated, the oil discharge port 102 of the rear pump cover 122B is eliminated, the oil suction port 101 is disposed on the pump body 121, the oil suction port 101 axially and radially penetrates through the pump body 121 to form an open structure, the oil discharge port 102 is disposed on the front pump cover 122A and axially penetrates through the front pump cover 122A, and during operation of the oil pumping unit 112, oil enters the pump body 121 through the open oil suction port 101, is pumped up by the oil pumping unit 112, and is discharged through the oil discharge port 102 of the front pump cover 122A.
In the sixth embodiment, when the housing 21 defines an oil-filled or total installation compartment 200 ', and the total installation compartment 200' (i.e., the integrated installation compartment 200C) includes a motor compartment 200A 'and an oil pump compartment 200B', the motor compartment 200A 'and the oil pump compartment 200B' are directly communicated through an oil hole or an oil passage, the motor assembly 2 is disposed in the motor compartment 200A ', and the oil pump assembly 1 is disposed in the oil pump compartment 200B'.
Referring to fig. 35-40, the assembly cabin 200' is an integrated installation cabin 200C, the stator 22, the rotor 23, the drive shaft 24, and the oil pump assembly 1 are all installed in the integrated installation cabin 200C, specifically, the oil pump assembly 1 is fixedly connected to the end cover 211 by the fixing bolt 29, the main oil inlet 201 is disposed at the top of the front end of the housing 21, the main oil outlet 202 is disposed at the top of the end cover 211, the end cover 211 is formed with an oil discharge channel 2110 separated from oil in the integrated installation cabin 200C, two ends of the oil discharge channel 2110 are respectively communicated to the main oil outlet 202 and the oil discharge port 102, and the drive shaft 24 does not have a central blind hole 2401 and a radial oil hole 2402.
When the motor assembly 2 works, oil outside the casing 21 enters the integrated installation cabin 200C through the main oil inlet 201, then passes through the stator 22 from front to back, enters the pump body 121 through the open type oil suction port 101, and then flows to the main oil outlet 202 through the pump oil part 112 and is discharged from the oil discharge port 102 on the front pump cover 122A and the oil discharge channel 2110 on the end cover 211.
Therefore, according to the electric oil pump assembly 1000 of the embodiment of the invention, since the oil suction port 101 of the oil pump assembly 1 is of an open structure and is directly communicated with the low-pressure integrated installation cabin 200C, an extra sealing ring can be omitted, the wall thickness of the pump body 121 can be reduced, the volume and the cost of the oil pump assembly 1 can be further reduced, and the oil suction damping and the noise can be reduced.
EXAMPLE seven
As shown in fig. 41 to 46, the present embodiment has substantially the same structure as the sixth embodiment, wherein the same reference numerals are used for the same components, except that: the oil suction port 101 and the oil discharge port 102 of the oil pump assembly 1 are arranged at different positions, and the main oil inlet 201 and the main oil outlet 202 are arranged at different positions.
Referring to fig. 41 to 46, the oil suction port 101 and the oil discharge port 102 are both disposed on the pump body 121, and both axially and radially penetrate through the pump body 121 to form an open structure, the oil discharge port 102 is located below the oil suction port 101, and during operation of the oil pumping unit 112, oil enters the pump body 121 through the open oil suction port 101 at the top of the pump body 121, is pumped up by the oil pumping unit 112, and is discharged out of the pump body 121 through the open oil discharge port 102 at the bottom of the pump body 121.
Referring to fig. 41-46, the main oil inlet 201 is disposed at the top of the end cover 211, the main oil outlet 202 is disposed at the bottom of the end cover 211, an oil drain duct 2110 separated from oil in the integrated installation chamber 200C is formed in the end cover 211, and both ends of the oil drain duct 2110 are respectively communicated to the main oil outlet 202 and the oil drain port 102.
When the motor assembly 2 works, oil outside the casing 21 enters the integrated installation cabin 200C through the main oil inlet 201, then passes through the stator 22 from back to front above the stator 22, then flows downwards to below the stator 22 from the front side of the stator 22, then flows to the oil pump assembly 1 from front to back through the stator 22, then enters the pump body 121 through the oil suction port 101 with the top opened in the oil pump assembly 1, and then flows to the main oil outlet 202 through the oil discharge channel 2110 on the opened oil discharge port 102 and the end cover 211 through the oil pumping part 112 to be discharged, so that the heat dissipation effect of the motor assembly 2 and the oil pump assembly 1 can be improved.
Therefore, according to the electric oil pump assembly 1000 of the embodiment of the present invention, since the oil suction port 101 of the oil pump assembly 1 is of an open structure and directly communicates with the low-pressure integrated installation chamber 200C, and since the oil discharge port 102 of the oil pump assembly 1 is of an open structure and directly communicates with the high-pressure oil discharge passage 2110, it is possible to omit an extra seal ring and reduce the wall thickness of the pump body 121, further reduce the volume and cost of the oil pump assembly 1, and reduce the damping and noise of oil suction and oil discharge.
Example eight
As shown in fig. 47-53, the present embodiment has substantially the same structure as the second embodiment, wherein the same reference numerals are used for the same components, except that: the front side cover solution of the oil pump assembly 1 is different.
Referring to fig. 47-53, the front side of the oil pumping part 112 does not have the front pump cover 122A, the front side of the pump body 121 is covered by the end cover 211 of the motor assembly 2, and the oil suction port 101 is directly defined by the front bearing housing 13A and the pump body 121. Therefore, the axial size and the volume of the oil pump assembly 1 can be further reduced, and the cost is reduced.
Example nine
As shown in fig. 54 to 60, the present embodiment has substantially the same structure as the fourth embodiment, in which the same reference numerals are used for the same components, except that: the front support scheme of the oil pumping mechanism 11 is different.
Referring to fig. 54 to 60, the double bearing pump cover 122M2 on the front side of the oil pumping part 112 is eliminated, the rotating shaft part 111 is directly supported on the end cover 211 of the motor assembly 2, and the oil suction port 101 is directly defined by the oil pumping part 112 and the pump body 121 by means of the end cover 211 providing axial support force for the oil pumping part 112. Therefore, the axial size and the volume of the oil pump assembly 1 can be further reduced, and the cost is reduced.
Example ten
As shown in fig. 61 to 67, the present embodiment has substantially the same structure as the ninth embodiment, in which the same reference numerals are used for the same components, except that: the rear support scheme of the oil pumping mechanism 11 is different.
Referring to fig. 61 to 67, the receiver 15 on the rear side of the pump oil portion 112 is eliminated, and the rear pump cover 122B is replaced with a double receiver pump cover 122M 2. Therefore, the axial size and the volume of the oil pump assembly 1 can be further reduced, and the cost is reduced.
In the description of the present invention, it is to be understood that the terms "front", "rear", "axial", "radial", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate.

Claims (6)

1. The utility model provides an electric oil pump assembly which characterized in that, electric oil pump assembly has total oil inlet and total oil-out, and includes:
a motor assembly including a drive shaft;
the oil pump assembly, the oil pump assembly floating support is in on motor element's the end cover, the drive shaft stretches into oil pump assembly's inside, and the drive oil pump assembly realizes following total oil inlet arrives total oil-out's pump oil work, electric oil pump assembly is including always adorning the cabin, always adorn the cabin and include motor cabin and oil pump cabin, the motor cabin with total oil inlet intercommunication, the oil pump cabin with total oil-out intercommunication, the oil pump assembly is established the oil pump under-deck, the oil absorption port of oil pump assembly with motor cabin intercommunication, the oil drain port of oil pump assembly with oil pump cabin intercommunication, keeping away from of oil pump assembly motor assembly's a side end face with pre-compression spring has between the internal face of oil pump cabin.
2. The electric oil pump assembly of claim 1 wherein the drive shaft is connected to a power input of the oil pump assembly.
3. The electric oil pump assembly as set forth in claim 1 wherein said oil pump assembly has a power input shaft on a power input, said drive shaft being connected to said power input shaft.
4. The electric oil pump assembly of claim 1 wherein an outer end face edge of the end portion of the drive shaft has a guide surface for facilitating insertion of the end portion into the oil pump assembly.
5. The electric oil pump assembly of claim 1 wherein the drive shaft includes a multi-segmented stepped shaft face.
6. A vehicle, characterized by comprising an electric oil pump assembly according to any one of claims 1-5.
CN201711463250.9A 2017-12-28 2017-12-28 Electric oil pump assembly and vehicle with same Active CN109969258B (en)

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Application Number Priority Date Filing Date Title
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CN109969258B true CN109969258B (en) 2021-03-26

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2511631A1 (en) * 1975-03-17 1976-09-23 Rexroth Sigma Gear wheel type hydraulic pump or motor - has pressure plates between end faces and floating bearings
CN102338084A (en) * 2011-07-19 2012-02-01 大连液压件有限公司 Integral external-release type power steering pump
CN203335396U (en) * 2013-06-24 2013-12-11 上海沪石石油机械有限公司 Full-immersion oil pump
CN104074743A (en) * 2014-05-27 2014-10-01 大连液压件有限公司 Efficient steering pump
CN204419616U (en) * 2014-12-15 2015-06-24 比亚迪股份有限公司 Oil pump assembly and the vehicle with it
CN105960532A (en) * 2014-03-14 2016-09-21 伍德沃德公司 High pressure gear pump with dual wall housing

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2511631A1 (en) * 1975-03-17 1976-09-23 Rexroth Sigma Gear wheel type hydraulic pump or motor - has pressure plates between end faces and floating bearings
CN102338084A (en) * 2011-07-19 2012-02-01 大连液压件有限公司 Integral external-release type power steering pump
CN203335396U (en) * 2013-06-24 2013-12-11 上海沪石石油机械有限公司 Full-immersion oil pump
CN105960532A (en) * 2014-03-14 2016-09-21 伍德沃德公司 High pressure gear pump with dual wall housing
CN104074743A (en) * 2014-05-27 2014-10-01 大连液压件有限公司 Efficient steering pump
CN204419616U (en) * 2014-12-15 2015-06-24 比亚迪股份有限公司 Oil pump assembly and the vehicle with it

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