Electronic oil pump connecting structure based on motor-free shell

Abstract

The utility model relates to an electronic oil pump connecting structure based on a motor-free shell. The electronic oil pump connecting structure comprises an oil pumping module, a motor module and a control module which are connected in sequence, the oil pumping module comprises an oil pumping shell, an oil pump inner rotor, an oil pump outer rotor and a bearing seat; the motor module comprises a motor rotating shaft, a motor rotor and a motor stator; the control module comprises a controller supporting frame, a controller and a controller rear cover. The upper end of a motor stator is sequentially connected with a bearing seat and an oil pumping shell, and the lower end of the motor stator is sequentially connected with a controller supporting frame and a controller rear cover. A motor rotating shaft is supported by a bearing at one end, is rotationally connected with a bearing hole in the bearing seat, extends into the oil pumping shell and is provided with an oil pump inner rotor, and an oil pump outer rotor is arranged in the oil pumping shell. The electronic oil pump assembly mainly solves the assembly problem of an electronic oil pump without a motor shell, and has the advantages of compact structure, convenience in assembly, reliability in connection and the like.

Description

Technical Field

[0001] This utility model belongs to the field of electronic oil pump technology, and relates to an electronic oil pump connection structure based on a motorless housing. Background Technology

[0002] The electronic oil pump, together with the oil circuit, heat exchanger, filter and other structures of the electric drive system, constitutes the cooling and lubrication system of the electric drive system; it receives signals from the upper system, provides lubricating oil with a certain flow rate and pressure, and feeds back its own status to the upper system.

[0003] While existing electric oil pumps without a motor housing eliminate the need for a housing, it is necessary to solve the problem of reliable connection between the motor module, the oil pump module, and the control module, and at the same time, it cannot meet the requirements for ease of installation. Summary of the Invention

[0004] The purpose of this utility model is to provide an electronic oil pump connection structure based on a motorless housing, which can solve the above-mentioned problems and is easy to assemble.

[0005] According to the technical solution provided by this utility model: an electronic oil pump connection structure based on a motorless housing includes an oil pump module, a motor module, and a control module connected in sequence; the oil pump module includes an oil pump housing, an inner oil pump rotor, an outer oil pump rotor, and a bearing seat; the motor module includes a motor shaft, a motor rotor, and a motor stator; the control module includes a controller support frame, a controller, and a controller rear cover; the upper end of the motor stator is connected to the bearing seat and the oil pump housing in sequence, and the lower end of the motor stator is connected to the controller support frame and the controller rear cover in sequence; the motor shaft is supported by a bearing at one end, rotatably connected to the bearing hole in the bearing seat, and extends into the oil pump housing to install the inner oil pump rotor, and the outer oil pump rotor is installed in the oil pump housing, located on the outer periphery of the inner oil pump rotor; the other end extends into the motor stator to install the motor rotor; a controller is provided between the controller support frame and the controller rear cover.

[0006] As a further improvement of this utility model, the pump housing, bearing seat, motor stator, and controller support frame are connected by bolts; pump body through holes are evenly distributed on the outer periphery of the pump housing, the bearing seat has a matching bearing seat through hole on the outer periphery, the motor stator has a matching stator through hole on the outer periphery, and the controller support frame has a matching bracket screw hole; the bolts pass through the pump body through hole, bearing seat through hole, and stator through hole in sequence and are then screwed into the bracket screw hole.

[0007] As a further improvement of this utility model, the lower part of the motor shaft is connected to the motor rotor by an interference fit.

[0008] As a further improvement of this utility model, the lower part of the bearing housing is provided with an upper stator positioning hole, the upper part of the controller support frame is provided with a lower stator positioning hole, and the upper and lower ends of the motor stator are respectively interference-fitted with the upper stator positioning hole and the lower stator positioning hole.

[0009] As a further improvement of this utility model, the outer periphery of the motor stator is provided with a first positioning arc and a second positioning arc, the upper stator positioning hole is provided with an upper positioning groove adapted to the first positioning arc, and the lower stator positioning hole is provided with a lower positioning groove adapted to the second positioning arc.

[0010] As a further improvement of this utility model, the first positioning arc and the second positioning arc have different dimensions.

[0011] As a further improvement of this utility model, the lower part of the controller support frame is provided with a controller mounting cavity, the controller is located in the controller mounting cavity, and the controller back cover abuts against the bottom of the controller.

[0012] The positive and progressive effects of this application are as follows:

[0013] This utility model mainly solves the assembly problem of electronic oil pumps without motor housing, and has the advantages of compact structure, convenient assembly and reliable connection. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the present invention.

[0015] Figure 2 This is a cross-sectional view of the present invention.

[0016] Figure 3 This is a top view of the pump housing of this utility model.

[0017] Figure 4 This is a schematic diagram of the motor stator of this utility model.

[0018] Figure 5 This is a top view of the controller support frame of this utility model.

[0019] Figure 6 This is a top view of the bearing housing of the controller of this utility model. Detailed Implementation

[0020] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0022] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this utility model described herein. Furthermore, terms such as "comprising" and "having" mean that in addition to those already listed in "comprising" and "having," other unlisted contents may also be included; for example, a process, method, system, product, or device may include a series of steps or units, not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices.

[0023] Due to the angle of the drawing, some parts may not be drawn, but their positions and connections can be understood from the text descriptions.

[0024] like Figures 1-2 As shown, this utility model is an electronic oil pump connection structure based on a motorless housing, including an oil pump module, a motor module, and a control module connected in sequence. The oil pump module includes an oil pump housing 11, an inner oil pump rotor 12, an outer oil pump rotor 13, and a bearing seat 14; the motor module includes a motor shaft 21, a motor rotor 22, and a motor stator 23; the control module includes a controller support frame 31, a controller 32, and a controller rear cover 33.

[0025] Specifically, the upper end of the motor stator 23 is sequentially connected to the bearing housing 14 and the oil pump housing 11, while the lower end of the motor stator 23 is sequentially connected to the controller support frame 31 and the controller rear cover 33. The motor shaft 21 is supported by a bearing at one end, rotatably connected to the bearing hole in the bearing housing 14, and extends into the oil pump housing 11 to install the inner rotor 12 of the oil pump. The outer rotor 13 of the oil pump is installed in the oil pump housing 11, located on the outer periphery of the inner rotor 12. The other end extends into the motor stator 23 to install the motor rotor 22. A controller 32 is located between the controller support frame 31 and the controller rear cover 33.

[0026] The pump housing 11, bearing seat 14, motor stator 23, and controller support frame 31 are connected by bolts. Specifically, as shown... Figures 3-6 As shown, pump body through holes 11-1 are evenly distributed around the outer periphery of the pump housing 11, bearing housing 14 has matching bearing housing through holes 14-1 around its outer periphery, motor stator 23 has matching stator through holes 23-1 around its outer periphery, and controller support frame 31 has matching bracket screw holes 31-1. Bolt 1 passes through the pump body through holes 11-1, bearing housing through holes 14-1, and stator through holes 23-1 in sequence and is then screwed into the bracket screw hole 31-1, completing the connection of the pump housing 11, bearing housing 14, motor stator 23, and controller support frame 31.

[0027] To ensure the strength of the motor stator 23, the stator through hole 23-1 has a notch, which can accommodate the bolt and keep the stator through hole 23-1 as far away from the center of the motor stator 23 as possible.

[0028] The upper part of the motor shaft 21 drives the internal rotor 12 of the oil pump through a key, transmission surface and other structures.

[0029] The lower part of the motor shaft 21 is connected to the motor rotor 22 by an interference fit.

[0030] The bearing housing 14 has an upper stator positioning hole at its lower part, and the controller support frame 31 has a lower stator positioning hole at its upper part. The upper and lower ends of the motor stator 23 are respectively interference-fitted with the upper stator positioning hole and the lower stator positioning hole. The outer circumference of the motor stator 23 has a first positioning arc 23-2 and a second positioning arc 23-3. Correspondingly, the upper stator positioning hole has an upper positioning groove 14-2 that matches the first positioning arc 23-2, and the lower stator positioning hole has a lower positioning groove 31-2 that matches the second positioning arc 23-3. The first positioning arc 23-2 and the second positioning arc 23-3 have different dimensions, which can prevent incorrect installation of the motor stator 23.

[0031] The controller support frame 31 has a controller mounting cavity at its lower part, the controller 32 is located in the controller mounting cavity, and the controller back cover 33 abuts against the bottom of the controller 32.

[0032] The working process of this utility model is as follows:

[0033] The controller 32 issues a command to control the motor to rotate. The motor shaft 21 drives the inner rotor 12 of the oil pump to rotate, and the inner rotor 12 drives the outer rotor 13 of the oil pump to perform an eccentric motion in the same direction. Multiple sealed working chambers are formed between the inner rotor 12 and the outer rotor 13. During the rotation of the rotor, the working chambers with increased volume gradually draw in oil through the suction port due to the decrease in internal pressure. As the rotor continues to rotate, the working chambers filled with oil gradually change from the suction zone to the pressure zone, thereby realizing the discharge of oil. Each working chamber completes one oil suction and pressure process for each rotation of the rotor. Due to the continuous rotation of the rotor, multiple working chambers sequentially perform oil suction and pressure, thereby realizing the continuous oil supply of the electronic oil pump.

[0034] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of this utility model, and the utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this utility model, and these modifications and improvements are also considered to be within the protection scope of this utility model.

Claims

1. An electric oil pump connection structure based on a motorless housing, characterized by, The application relates to a pump-oil module, a motor module and a control module which are sequentially connected, wherein the pump-oil module comprises a pump-oil casing (11), an inner rotor of an oil pump (12), an outer rotor of the oil pump (13) and a bearing seat (14); the motor module comprises a motor rotating shaft (21), a motor rotor (22) and a motor stator (23); the control module comprises a controller support frame (31), a controller (32) and a controller rear cover (33); the upper end of the motor stator (23) is sequentially connected with the bearing seat (14) and the pump-oil casing (11), the lower end of the motor stator (23) is sequentially connected with the controller support frame (31) and the controller rear cover (33); the motor rotating shaft (21) is supported by one end bearing and is rotationally connected with the bearing hole in the bearing seat (14), and the motor rotating shaft (21) extends into the pump-oil casing (11) and is provided with the inner rotor of the oil pump (12), the outer rotor of the oil pump (13) is arranged in the pump-oil casing (11) and is located outside the periphery of the inner rotor of the oil pump (12); the other end of the motor rotating shaft (21) extends into the motor stator (23) and is provided with the motor rotor (22); the controller (32) is arranged between the controller support frame (31) and the controller rear cover (33).

2. The electric-motor-less housing-based electronic oil pump connecting structure according to claim 1, characterized by The pump-oil casing (11), the bearing seat (14), the motor stator (23) and the controller support frame (31) are connected by bolts; the periphery of the pump-oil casing (11) is uniformly provided with pump-body through holes (11-1), the periphery of the bearing seat (14) is provided with matched bearing-seat through holes (14-1), the periphery of the motor stator (23) is provided with matched stator through holes (23-1), and the controller support frame (31) is provided with matched support-frame screw holes (31-1); the bolt (1) sequentially penetrates through the pump-body through holes (11-1), the bearing-seat through holes (14-1) and the stator through holes (23-1) and is screwed into the support-frame screw holes (31-1).

3. The electric-motor-less housing-based electronic oil pump connecting structure according to claim 1, characterized by The lower part of the motor rotating shaft (21) is connected with the motor rotor (22) through interference fit.

4. The electric-motor-less housing-based electric oil pump connecting structure according to claim 1, characterized by The lower part of the bearing seat (14) is provided with an upper stator positioning hole, the upper part of the controller support frame (31) is provided with a lower stator positioning hole, and the upper and lower ends of the motor stator (23) are interference-fitted with the upper stator positioning hole and the lower stator positioning hole respectively.

5. The electric-motor-less housing-based electronic oil pump connecting structure according to claim 4, characterized by The periphery of the motor stator (23) is provided with a first positioning arc (23-2) and a second positioning arc (23-3), the upper stator positioning hole is provided with an upper positioning groove (14-2) matched with the first positioning arc (23-2), and the lower stator positioning hole is provided with a lower positioning groove (31-2) matched with the second positioning arc (23-3).

6. The electric-motor-less housing-based electronic oil pump connecting structure according to claim 4, characterized by The first positioning arc (23-2) and the second positioning arc (23-3) are different in size.

7. The electric-motor-less housing-based electronic oil pump connecting structure according to claim 1, characterized by The lower part of the controller support frame (31) is provided with a controller mounting cavity, the controller (32) is arranged in the controller mounting cavity, and the controller rear cover (33) abuts against the bottom of the controller (32).

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