Small-size oil pump structure

Abstract

The utility model relates to the technical field of vehicle-mounted oil pumps. A small-size oil pump structure comprises an oil pump shell, a pump cover is arranged at the top of the oil pump shell, an oil outlet is formed in the pump cover, a stator is arranged on the periphery in the oil pump shell, a hollow rotor is arranged in the center of the oil pump shell, a magnet is arranged on the outer wall of the rotor, an impeller is arranged on the inner side of the rotor, and a center shaft is arranged in the center of the impeller and is of a hollow structure. One section of the center shaft extends out of the oil pump shell to serve as an oil inlet. According to the small-size oil pump structure, the rotor and impeller structure is effectively and excellently improved, the size and the mass of an oil pump are effectively controlled, the heat dissipation effect of the oil pump can be guaranteed, and the higher actual requirement of a user can be met. The electronic oil pump solves the technical problems that in the prior art, an existing electronic oil pump is single in structural design and large in size and size, and higher use requirements cannot be met.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle-mounted oil pump technical field especially relates to a small volume oil pump structure. BACKGROUND

[0002] With the development of economy, people's living standards gradually improve, and the car has become one of the public's preferred means of transportation. The automobile industry develops rapidly, and with the development of automobile performance to more safe, more reliable, more stable, environmental protection and energy saving direction, in order to ensure the stable operation of automobile power assembly, it is necessary to equip perfect actuator, therefore each actuator with motor is used on automobile power assembly in large quantities, including hydraulic actuator, gear selection actuator, brake booster and the like.

[0003] In order to ensure the cooling and lubrication of each part of the engine, an electronic oil pump is needed to provide power for oil circulation, and the electronic oil pump is controlled by the controller system to provide power for the internal motor, drive the impeller (inner and outer rotor) to drive the oil circulation to cool and lubricate the related parts. The current new type of electronic oil pump is composed of a controller, a motor and a pump head inner and outer rotor. In order to ensure the stable connection of each structure and the stable work of the product, the overall structure design has high requirements. However, the current electronic oil pump has single structure, large volume and mass, and cannot meet higher actual demand, so it is necessary to improve. UTILITY MODEL CONTENT

[0004] The utility model provides a kind of effective optimization rotor and impeller structure, effectively control the volume and mass of oil pump, and can guarantee the heat dissipation effect of oil pump, can satisfy the higher actual demand of user a kind of small volume oil pump structure;Solve the technical problem that the current electronic oil pump has single structure design, the size and volume of electronic oil pump are larger, and cannot meet higher use demand in prior art.

[0005] The above technical problems of the utility model are solved by the following technical scheme: a small volume oil pump structure, including oil pump shell, the top of oil pump shell is equipped with pump cover, the pump cover is equipped with oil outlet, the periphery in oil pump shell is equipped with stator, the center of oil pump shell is equipped with hollow rotor, the outer wall of rotor is equipped with magnet, the inner side of rotor is equipped with impeller, the center of impeller is equipped with center shaft, center shaft is hollow structure, and a section of center shaft extends to oil pump shell outside as oil inlet. The rotor and impeller in the utility model are combined as a whole structure, the whole rotor structure is assembled and then installed on the center shaft, when working, the center shaft is the oil inlet of the whole oil pump, and the oil flows out from the oil outlet after passing through the impeller, and a part of the oil flows through the stator when circulating, which has certain heat dissipation effect on the stator structure. The utility model integrates the rotor and impeller structure, greatly reduces the volume and mass of the oil pump, effectively reduces the moment of inertia of the rotor, and improves the work efficiency.

[0006] As preferred, the oil pump shell is a semi-closed cavity structure with an open top, and the pump cover is arranged on the top of the oil pump shell.

[0007] As preferred, a plurality of corresponding lugs are integrally formed on the oil pump shell and the pump cover, and a corresponding mounting hole is formed on each lug. The arc-shaped lugs and bolts can quickly assemble the oil pump shell and the pump cover, and the size and number of the lugs can be adjusted according to actual needs.

[0008] As preferred, a sealing ring is embedded on the mating surface between the oil pump shell and the pump cover. A groove is formed on the top surface of the oil pump shell, and the mating surface of the oil pump shell and the pump cover is sealed by the sealing ring to prevent oil leakage.

[0009] As preferred, a mating hole is formed in the center of the pump cover, the oil outlet is formed on the top surface of the pump cover, and the central shaft penetrates through the mating hole to the outside as the oil inlet of the oil pump. The circular mating hole in the center of the pump cover facilitates assembly with the central shaft, and the central shaft can serve as the oil inlet; during operation, the central shaft serves as the oil inlet of the entire oil pump, and the oil flows out from the oil outlet after passing through the impeller, and a part of the oil flows through the stator during circulation. Since the oil outlet is formed on the top, the internal cavity is filled with oil, which has a certain heat dissipation effect on the stator structure.

[0010] As preferred, the rotor is of a ring structure, the magnet is attached to the outer wall of the rotor, and the impeller is assembled on the inner wall of the rotor. The rotor is optimized to a ring structure to provide assembly space for the impeller, thereby optimizing the volume of the oil pump

[0011] As preferred, the impeller and the rotor are integrally formed by plastic molding. The impeller can be of a split structure or an integrally formed structure by plastic molding, which can be adjusted according to different actual needs.

[0012] As preferred, the blades of the impeller are of a wave structure.

[0013] Therefore, the small-volume oil pump structure has the following advantages: the rotor and impeller structure are effectively optimized, the volume and quality of the oil pump are effectively controlled, the heat dissipation effect of the oil pump can be guaranteed, and higher actual needs of users can be met. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a perspective structural schematic view of the small-volume oil pump structure of the utility model.

[0015] Figure 2 is Figure 1 a top view structural schematic view.

[0016] Figure 3 is Figure 1A schematic diagram of the front sectional view of the structure.

[0017] Figure 4 yes Figure 1 A three-dimensional structural diagram of the central rotor.

[0018] In the diagram, the components are: 1. Pump housing; 2. Pump cover; 3. Sealing ring; 4. Lug; 5. Oil outlet; 6. Stator; 7. Rotor; 8. Impeller; and 9. Central shaft. Detailed Implementation

[0019] The technical solution of the utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0020] Example:

[0021] like Figure 1 and 2 As shown in Figures 3 and 4, a small-volume oil pump structure includes an oil pump housing 1, which is a semi-closed cavity structure with an open top. A pump cover 2 is fitted on the top of the oil pump housing 1, and a sealing ring 3 is embedded on the mating surfaces of the oil pump housing 1 and the pump cover 2.

[0022] Five arc-shaped lugs 4 are integrally formed on the outer walls of the oil pump housing 1 and the pump cover 2, and each lug 4 on the oil pump housing 1 and the pump cover 2 is provided with a corresponding mounting hole for mating and fixing with mounting bolts.

[0023] A through mating hole is provided at the center of the surface of the pump cover 2, and an oil outlet 5 is integrally formed on one side of the pump cover 2.

[0024] The oil pump has a stator 6 installed on its outer periphery, and a hollow rotor 7 installed inside the stator 6. The rotor 7 has a ring structure, and magnets are attached to the outer wall of the rotor 7. An impeller 8 is installed on the inner side of the rotor 7. The blades of the impeller 8 have a wave-shaped structure. The impeller 8 and the rotor 7 are plastic-coated.

[0025] A central shaft 9 is installed at the center of the impeller 8. The central shaft 9 is a hollow structure. The top end of the central shaft 9 extends to the outside through the mating hole. The end of the central shaft 9 serves as the oil inlet of the oil pump.

[0026] In this invention, the rotor 7 and impeller 8 are combined into an integral structure. After the integral rotor 7 structure is assembled, it is installed on the central shaft 9. During operation, the central shaft 9 is the oil inlet of the entire oil pump. The oil flows out from the outlet 5 after passing through the impeller 8. During the flow, a portion of the oil will flow through the stator 6. Since the outlet 5 is located at the top, the oil will fill the internal cavity, which has a certain heat dissipation effect on the stator 6 structure.

[0027] This invention integrates the rotor 7 and impeller 8, greatly reducing the size and weight of the oil pump, effectively reducing the rotational inertia of the rotor 7, and improving working efficiency.

[0028] The specific embodiments described herein are merely illustrative of the principles of the application. Numerous modifications and adaptations will be apparent to those skilled in the art without departing from the spirit or scope of the application.

Claims

1. A small-volume oil pump structure, characterized in that: The device includes an oil pump housing, a pump cover on the top of the oil pump housing, an oil outlet on the pump cover, a stator on the outer periphery of the oil pump housing, a hollow rotor at the center of the oil pump housing, a magnet on the outer wall of the rotor, an impeller on the inner side of the rotor, a central shaft at the center of the impeller, the central shaft being a hollow structure, and a section of the central shaft extending to the outside of the oil pump housing as an oil inlet.

2. The small-volume oil pump structure according to claim 1, characterized in that: The oil pump housing is a semi-enclosed cavity structure with an open top, and the pump cover is fitted and installed on the top of the oil pump housing.

3. The small-volume oil pump structure according to claim 2, characterized in that: The oil pump housing and pump cover are integrally formed with several corresponding lugs, and each lug has a corresponding mounting hole.

4. The small-volume oil pump structure according to claim 3, characterized in that: A sealing ring is embedded on the mating surface between the oil pump housing and the pump cover.

5. The small-volume oil pump structure according to claim 1, characterized in that: The pump cover has a mating hole in the center, the oil outlet is located on the top surface of the pump cover, and the central shaft passes through the mating hole to the outside as the oil inlet of the oil pump.

6. The small-volume oil pump structure according to claim 1, characterized in that: The rotor has a ring structure, with magnets attached to the outer wall of the rotor and impellers assembled on the inner wall of the rotor.

7. The small-volume oil pump structure according to claim 1, characterized in that: The impeller and rotor are integrally molded with plastic coating.

8. The small-volume oil pump structure according to claim 1, characterized in that: The blades of the impeller have a wavy structure.

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