CN220022436U

CN220022436U - Wet-type electronic oil pump's rotor part and wet-type electronic oil pump

Info

Publication number: CN220022436U
Application number: CN202320689996.6U
Authority: CN
Inventors: 沈舟; 史俊鸿
Original assignee: Yingzhi Thermal Management Technology Jiaxing Co ltd
Current assignee: Yingzhi Thermal Management Technology Jiaxing Co ltd
Priority date: 2023-03-31
Filing date: 2023-03-31
Publication date: 2023-11-14
Anticipated expiration: 2033-03-31

Abstract

The utility model discloses a rotor component of a wet electronic oil pump and the wet electronic oil pump comprising the rotor component. The rotor component of the wet electronic oil pump comprises a rotating shaft, a rotor component and a sealing cover, and the rotor component is sleeved and fixed on the rotating shaft. The first axial end of the rotating shaft is used for being connected with and driving an oil pumping assembly of the wet electronic oil pump, and the second axial end of the rotating shaft is arranged in a motor cavity of the wet electronic oil pump. The sealed cowling cover is established and is connected in pivot axial second end and form sealed chamber with it, and hall magnetic ring assembles in sealed intracavity, so, the fluid in the motor chamber of wet-type electronic oil pump can not get into sealed chamber, can not cause the influence to hall magnetic ring's fixed.

Description

Wet-type electronic oil pump's rotor part and wet-type electronic oil pump

Technical Field

The utility model belongs to the field of electronic oil pumps, and particularly relates to a rotor component of a wet electronic oil pump and the wet electronic oil pump.

Background

The automobile industry rapidly develops, and along with the development of automobile performance towards safer, more reliable, more stable, full-automatic intelligent and environment-friendly energy-saving directions, the electronic oil pump is widely applied to an automobile lubricating system and a cooling system, and can well meet the market requirements.

In the motor part of the electronic oil pump, the hall magnetic ring is usually directly fixed on the rotating shaft of the rotor by adopting adhesive. However, the fixing mode is feasible in the dry electronic oil pump, but when the wet electronic oil pump is used, as one end of the rotating shaft, on which the Hall magnetic ring is arranged, is soaked with oil, the effect on the connection of the adhesive is formed, so that the fixing of the Hall magnetic ring is gradually loosened, and even the Hall magnetic ring is likely to fall off.

Disclosure of Invention

The utility model aims to provide a rotor component of a wet electronic oil pump and the wet electronic oil pump, and aims to solve the problem that a Hall magnetic ring in the wet electronic oil pump is easy to loosen due to the fact that adhesive is adopted for connection in the prior art.

The technical scheme of the utility model is as follows:

the rotor component of the wet electronic oil pump comprises a rotating shaft, a rotor assembly and a sealing cover, wherein the rotor component is sleeved and fixed on the rotating shaft;

the first axial end of the rotating shaft is used for connecting and driving an oil pumping assembly of the wet electronic oil pump, and the second axial end of the rotating shaft is arranged in a motor cavity of the wet electronic oil pump; the sealing cover is covered and connected with the second end of the axial direction of the rotating shaft and is matched with the second end to form a sealing cavity, and the Hall magnetic ring is assembled in the sealing cavity.

In the rotor component of the wet electronic oil pump provided in one embodiment, the hall magnetic ring is pressed on the end face of the second end in the axial direction of the rotating shaft by the inner bottom face of the sealing cover.

In the rotor component of the wet electronic oil pump provided in one embodiment, a shock pad is arranged between the hall magnetic ring and the end face of the second end of the rotating shaft in the axial direction.

In the rotor component of the wet electronic oil pump provided in a certain embodiment, an outer side wall of the hall magnetic ring is matched with an outer side wall of the seal cover, and a plane anti-rotation structure is arranged at a circumferential connection position of the hall magnetic ring and the seal cover.

In the rotor component of the wet electronic oil pump provided in an embodiment, the inner side wall of the seal cover is in interference fit with the outer side wall of the second end of the rotating shaft in the axial direction, so that the seal cover and the rotating shaft are fixedly and hermetically connected.

In the rotor component of the wet electronic oil pump provided in one embodiment, the rotor assembly is an injection-molded integrated piece comprising a rotor core and magnetic steel.

In the rotor component of the wet electronic oil pump provided in one embodiment, the rotor core is provided with an injection-molded shaft hole, and the rotating shaft is in interference fit in the shaft hole.

In the rotor component of the wet electronic oil pump provided in one embodiment, the magnetic steel is assembled on an assembling platform of the rotor core, and limiting protrusions are arranged on two circumferential sides of the assembling platform and used for limiting displacement of the magnetic steel in the circumferential direction of the rotor during injection molding.

In the rotor component of the wet electronic oil pump provided in one embodiment, the assembly platform is provided with a process hole recessed towards the radial inner side.

A wet electronic oil pump comprising a rotor component of the wet electronic oil pump as claimed in any one of the preceding claims;

one end of the rotating shaft, provided with the sealing cover, is arranged in the motor cavity of the wet-type electronic oil pump.

Compared with the prior art, the utility model has at least one of the following advantages or positive effects due to the adoption of the technical scheme:

(1) According to the utility model, a sealing environment (sealing cavity) is formed at the end part of the rotating shaft by adopting the sealing cover, the Hall magnetic ring is positioned in the sealing environment, oil in the motor cavity of the wet electronic oil pump cannot enter the sealing cavity, and the fixing of the Hall magnetic ring cannot be influenced.

(2) The Hall magnetic ring is pressed on the end face of the rotating shaft through the sealing cover, and the Hall magnetic ring is simple and reliable in structure, convenient to assemble and simultaneously compatible in cost. And the shock pad arranged between the Hall magnetic ring and the end face of the rotating shaft can effectively prevent the Hall magnetic ring from being broken.

(3) The traditional magnetic steel adopts a pressing-in type or riveting type, the precision requirement of the structure on the rotor core is higher, and the magnetic steel can be easily crushed. The utility model effectively solves the problem that the magnetic steel is easy to crush by attaching the magnetic steel on the surface of the rotor core and then injection molding the magnetic steel into a whole; meanwhile, the whole structure is simple, the consistency in mass production is easy to maintain, the mass production operation is convenient, and the time cost is saved.

(4) According to the utility model, the arrangement of the process holes ensures that the injection molding material entering the process holes can compress the magnetic steel on the inner side wall of the mold cavity of the mold under the injection molding pressure condition during injection molding, so that the outer surface of the magnetic steel is tightly attached to the mold cavity of the mold, thereby preventing plastic from overflowing to the outer surface of the magnetic steel, skillfully solving the problem of glue overflow on the surface of the magnetic steel after injection molding, and further ensuring the dynamic balance of the rotor part.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model.

Fig. 1 is a schematic structural view of a rotor component of a wet electronic oil pump according to the present utility model;

FIG. 2 is a schematic view of a circumferential assembly of a Hall magnetic ring and a seal cap of the present utility model;

FIG. 3 is a schematic view of a rotor assembly of the present utility model prior to injection molding;

FIG. 4 is a schematic view of a rotor assembly according to the present utility model;

fig. 5 is a schematic structural diagram of a wet electronic oil pump according to the present utility model.

Reference numerals illustrate:

1: a rotor assembly; 2: a rotating shaft; 3: a sealing cover; 4: a Hall magnetic ring; 5: a planar anti-rotation structure; 6: magnetic steel; 7: a rotor core; 8: a limit protrusion; 9: a process hole; 10: an assembly platform; 11: a stator component; 12: a control part; 13: and (3) an oil pumping assembly.

Detailed Description

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following description will explain the specific embodiments of the present utility model with reference to the accompanying drawings. It is evident that the drawings in the following description are only examples of the utility model, from which other drawings and other embodiments can be obtained by a person skilled in the art without inventive effort.

For the sake of simplicity of the drawing, the parts relevant to the present utility model are shown only schematically in the figures, which do not represent the actual structure thereof as a product. Additionally, in order to simplify the drawing for ease of understanding, components having the same structure or function in some of the drawings are shown schematically with only one of them, or only one of them is labeled. Herein, "a" means not only "only this one" but also "more than one" case.

Example 1

Referring to fig. 1 to 4, the present embodiment provides a rotor component of a wet electronic oil pump, which includes a rotating shaft 2, a rotor assembly 1 and a seal cover 3, and the rotor component is sleeved and fixed on the rotating shaft 2. The first axial end of the rotating shaft 2 is used for being connected with and driving an oil pumping component 13 of the wet electronic oil pump, and the second axial end of the rotating shaft 2 is arranged in a motor cavity of the wet electronic oil pump. The sealing cover 3 is covered and connected to the second end of the axial direction of the rotating shaft 2 and is matched with the second end to form a sealing cavity, and the Hall magnetic ring 4 is assembled in the sealing cavity, so that oil in the motor cavity of the wet electronic oil pump cannot enter the sealing cavity, and the fixing of the Hall magnetic ring 4 cannot be influenced.

Specifically, the hall magnetic ring 4 is pressed by the inner bottom surface of the seal cover 3 at the end surface of the axial second end of the rotating shaft 2, and a shock pad is arranged between the hall magnetic ring 4 and the matching surface of the rotating shaft 2 (i.e. the end surface of the axial second end of the rotating shaft 2) for preventing the hall magnetic ring 4 from being broken.

As shown in fig. 2, the outer side wall of the hall magnet ring 4 is matched with the outer side wall of the seal cover 3. A plane anti-rotation structure 5 can be arranged at the circumferential connection part of the Hall magnetic ring 4 and the sealing cover 3 to prevent the circumferential rotation of the Hall magnetic ring 4.

The inside wall interference fit of sealed cowling 3 is on the lateral wall of pivot 2 axial second end, realizes the fixed and sealing connection of sealed cowling 3 and pivot 2.

Referring to fig. 3 and 4, the rotor assembly 1 is an injection molded one piece comprising a rotor core 7 and a magnetic steel 6. The rotor core 7 is composed of rotor silicon steel sheets, a shaft hole is formed in the middle of each rotor silicon steel sheet, the shaft hole part cannot be injection molded, and the rotating shaft 2 is connected into the shaft hole. That is, the rotor core 7 is provided with an injection-molded shaft hole, and the rotating shaft 2 is assembled in the shaft hole in an interference manner.

The magnetic steel 6 is assembled on an assembling platform 10 of the rotor core 7, and limiting protrusions 8 are arranged on two circumferential sides of the assembling platform 10 and used for limiting displacement of the magnetic steel 6 in the circumferential direction of the rotor during injection molding. The assembly platform 10 is provided with the process holes 9 which are recessed towards the radial inner side, and the process holes 9 are arranged, so that the injection molding material entering the process holes 9 can compress the magnetic steel 6 on the inner side wall of the mold cavity under the injection molding pressure condition during injection molding, the outer surface of the magnetic steel 6 is tightly attached to the mold cavity, the plastic is prevented from overflowing to the outer surface of the magnetic steel 6, the problem of glue overflow on the surface of the magnetic steel 6 after injection molding is skillfully solved, and the dynamic balance of the rotor part is ensured.

Compared with the traditional installation method of pressing-in or riveting-in of the magnetic steel 6, the installation method in the embodiment effectively solves the problem that the magnetic steel 6 is easy to crush, and meanwhile, the installation method is simple in overall structure, easy to maintain consistency in mass production, convenient to operate in mass production and time-saving in cost.

Example 2

Referring to fig. 5, the present embodiment provides a wet electronic oil pump including a rotor part as described in embodiment 1, and further including a stator part 11, an oil pump part, and a control part 12. The rotor part is arranged in the stator part 11, and the oil pump part and the control part 12 are respectively assembled at two axial ends of the stator part 11 and are matched to form a motor cavity for accommodating the rotor part.

The axial first end of the rotating shaft 2 in the rotor component is rotationally connected with the oil pump component and stretches into the oil pump cavity of the oil pump component to be connected with the oil pumping component 13 in the oil pump cavity, so as to drive the oil pumping component 13 to work. The high-pressure oil cavity and the low-pressure oil cavity in the oil pump component are both arranged in the oil pump cavity, the high-pressure oil cavity and the low-pressure oil cavity are respectively communicated with the motor cavity, and the oil pump component 13 is used for driving cooling oil in the high-pressure oil cavity to flow into the motor cavity and driving cooling oil in the motor cavity to flow into the low-pressure oil cavity.

The second axial end of the rotating shaft 2 is rotatably connected to the control part 12, as shown in fig. 5, and the second axial end of the rotating shaft 2, that is, the end with the hall magnetic ring 4 installed, is still located in the motor cavity, and oil exists around the second axial end.

The embodiments of the present utility model have been described in detail with reference to the drawings, but the present utility model is not limited to the above embodiments. Even if various changes are made to the present utility model, it is within the scope of the appended claims and their equivalents to fall within the scope of the utility model.

Claims

1. The rotor component of the wet electronic oil pump is characterized by comprising a rotating shaft, a rotor assembly and a sealing cover, wherein the rotor component is sleeved and fixed on the rotating shaft;

the first axial end of the rotating shaft is used for connecting and driving an oil pumping assembly of the wet electronic oil pump, and the second axial end of the rotating shaft is arranged in a motor cavity of the wet electronic oil pump; the sealing cover is covered and connected to the second end of the axial direction of the rotating shaft and is matched with the second end to form a sealing cavity, and the Hall magnetic ring is assembled in the sealing cavity.

2. The rotor component of a wet electronic oil pump according to claim 1, wherein the hall magnetic ring is pressed against an end face of the second end in the axial direction of the rotating shaft by an inner bottom face of the seal cover.

3. The rotor component of the wet electronic oil pump according to claim 2, wherein a shock pad is provided between the hall magnetic ring and an end face of the second end in the axial direction of the rotating shaft.

4. The rotor component of a wet electronic oil pump according to claim 1 or 2, wherein an outer side wall of the hall magnetic ring is adapted to an outer side wall of the seal cover, and a planar anti-rotation structure is arranged at a circumferential connection position of the hall magnetic ring and the seal cover.

5. The rotor component of a wet electronic oil pump according to claim 1, wherein an inner side wall of the seal cover is interference fitted on an outer side wall of the axial second end of the rotating shaft, so as to realize fixed and sealed connection of the seal cover and the rotating shaft.

6. The rotor component of a wet electronic oil pump of claim 1, wherein the rotor assembly is an injection molded one piece comprising a rotor core and magnetic steel.

7. The rotor component of a wet electronic oil pump according to claim 6, wherein the rotor core has an injection molded shaft hole therein, and the rotating shaft is interference fitted in the shaft hole.

8. The rotor component of a wet electronic oil pump according to claim 6, wherein the magnetic steel is assembled on an assembling platform of the rotor core, and limiting protrusions are arranged on two circumferential sides of the assembling platform and used for limiting displacement of the magnetic steel along the circumferential direction of the rotor during injection molding.

9. The rotor component of a wet electronic oil pump according to claim 8, wherein the mounting platform is provided with a process hole recessed toward the radial inside.

10. A wet electronic oil pump comprising the rotor component of the wet electronic oil pump according to any one of claims 1 to 9;