Motor shell of electronic oil pump

Abstract

The utility model discloses a motor shell of an electronic oil pump, which comprises a shell and a connecting base, the connecting base is connected with the shell, a cavity is formed in the shell, a bearing seat is arranged in the cavity, reinforcing ribs are arranged on the bearing seat, and radiating ribs are arranged on the outer wall of the shell. The motor shell has the advantages that the heat dissipation performance of the motor shell is improved, the production cost is reduced, and the damping effect of the motor shell is optimized.

Description

Technical Field

[0001] This application relates to the field of engineering machinery and new energy vehicle parts technology, and in particular to a motor housing for an electronic oil pump. Background Technology

[0002] With the continuous development of technology, electronic oil pumps are increasingly being used in automobiles, industry, and shipbuilding. As a crucial component of the electronic oil pump motor, the existing motor housing suffers from several problems. For example, its heat dissipation performance is poor; during prolonged operation, the heat generated by the motor cannot be dissipated in time, easily leading to overheating and affecting the efficiency and lifespan of the electronic oil pump. Furthermore, existing motor housings have relatively thick walls, resulting in higher manufacturing costs and hindering large-scale production. Additionally, under complex automotive operating conditions, the housing's vibration resistance is insufficient, making internal motor components susceptible to displacement or damage due to vibration. Therefore, there is room for further improvement. Utility Model Content

[0003] In view of this, this application provides a motor housing for an electronic oil pump, which can improve heat dissipation efficiency through a unique heat dissipation fin structure, and reduce the wall thickness while ensuring the rigidity and strength of the housing, thereby reducing production costs. In addition, through a special bearing seat design, the strength of the bearing seat and the entire housing is increased, thereby enhancing the stability of the connection between the bearing seat and the rotor, reducing the displacement or damage of internal components such as the rotor due to vibration, and enhancing the shock resistance of the housing.

[0004] In summary, in order to improve the heat dissipation performance of the motor housing, reduce production costs, and optimize the vibration damping effect of the motor housing, this application proposes a motor housing for an electronic oil pump.

[0005] The motor housing of the electronic oil pump provided in this application adopts the following technical solution:

[0006] An electric motor housing for an electronic oil pump includes a housing and a connecting base, the connecting base being connected to the housing. The housing has a cavity, a bearing seat is provided inside the cavity, the bearing seat has reinforcing ribs, and the outer wall of the housing has heat dissipation ribs.

[0007] By adopting the above technical solution, heat dissipation ribs are set on the outer wall of the housing, so that the heat dissipation ribs are arranged in a divergent shape around the outside of the motor housing. The heat dissipation ribs are integrally formed with the housing, which increases the effective heat dissipation area of ​​the housing and improves the heat dissipation efficiency. At the same time, compared with similar housings, the rigidity and strength of the housing are improved due to the addition of heat dissipation ribs, which allows the housing wall thickness to be reduced in non-heat dissipation rib areas, reducing the material required for motor housing production and lowering production costs. In addition, the setting of heat dissipation ribs also helps to suppress the noise generated by vibration of the motor housing during operation. Furthermore, by adding reinforcing ribs to the bearing seat, the strength of the bearing seat and the entire housing is greatly increased, thereby strengthening the stability of the connection between the bearing seat and the rotor, reducing the displacement or damage of internal components such as the rotor due to vibration, and enhancing the shock resistance of the housing.

[0008] Preferably, the heat dissipation ribs are strip-shaped and are arranged along the axial direction of the housing; the cross-section of the heat dissipation ribs is approximately rectangular.

[0009] By adopting the above technical solution, the strip-shaped rectangular heat dissipation fins not only make the heat dissipation fins easy to demold, but also reduce the raw materials required for the heat dissipation fins while ensuring that the casing has a large effective heat dissipation area.

[0010] Preferably, the reinforcing rib is disposed on the outer wall of the bearing housing. The reinforcing rib includes an oblique protrusion and a first protrusion. One end of the oblique protrusion is connected to the bearing housing, and the other end is connected to the first protrusion. The height of the end of the oblique protrusion closer to the first protrusion is less than the height of the end of the oblique protrusion farther from the first protrusion, and the height of the first protrusion is greater than the height of the oblique protrusion.

[0011] By adopting the above technical solution, the oblique protrusion and the first protrusion can not only enhance the stability of the bearing housing and increase the strength of the bearing housing and the entire housing, thereby enhancing the stability of the connection between the bearing housing and the rotor, reducing the displacement or damage of internal components such as the rotor due to vibration, and enhancing the shock resistance of the housing, but also restrict the position of components inside the cavity through the oblique protrusion and the first protrusion, thereby reducing the displacement or damage of internal components due to vibration and enhancing the shock resistance of the housing.

[0012] Preferably, the connecting base is provided with a shock-absorbing base.

[0013] By adopting the above technical solution, the connection base and the position to be fixed of the electronic oil pump are stably connected through the shock-absorbing base, reducing the impact of vibration on the internal components of the housing, enhancing the shock resistance of the housing, and thus strengthening the shock resistance of the electronic oil pump.

[0014] Preferably, the shock-absorbing base includes a fastening screw, an elastic rubber block, and a metal support block. The fastening screw is connected to the connecting base, and the elastic rubber block and the metal support block are located on the fastening screw, with the elastic rubber block and the metal support block arranged alternately.

[0015] By adopting the above technical solution, the elastic rubber block can effectively absorb the vibration from the car during driving, while the metal support block ensures the stability of the entire shell. Through the alternating arrangement of the elastic rubber block and the metal support block, it can ensure that the connection between the connecting base and the fixed position of the electronic oil pump has elastic floating space, and also ensure the connection strength between the connecting base and the fixed position of the electronic oil pump, so that the electronic oil pump is stably connected to its fixed position and has strong shock resistance.

[0016] Preferably, the connecting base includes a ladder section and a connecting section. One end of the ladder section is connected to the outer wall of the housing, and the other end is connected to the connecting section. The connecting section is set at an angle to the ladder section, and a connecting hole is provided on the connecting section.

[0017] By adopting the above technical solution, the ladder section and the connecting section are set at an angle, so that when the connecting section is connected to the fixed position of the electronic oil pump, the housing connected to the ladder section is suspended in the air, and the shape of the ladder section effectively connects the outer wall of the housing and the connecting section, ensuring uniform force transmission and optimizing the stability of the connection between the connecting section and the fixed position of the electronic oil pump.

[0018] Preferably, the axial direction of the connecting hole is perpendicular to the axial direction of the housing.

[0019] By adopting the above technical solution, when the connecting hole is connected to the position to be fixed of the electronic oil pump, the axial direction of the connecting hole is vertically upward, while the axial direction of the housing is parallel to the mounting surface of the position to be fixed of the electronic oil pump.

[0020] Preferably, the elastic rubber block is positioned close to the connecting base.

[0021] By adopting the above technical solution, not only can the impact of external vibration on the connecting base be reduced, but the impact of vibration of internal components on the external mounting surface can also be reduced.

[0022] Preferably, the housing has axles at both ends, and the axles have lugs, with the heat dissipation fins corresponding to the lugs.

[0023] By adopting the above technical solution, the shaft and lugs facilitate the fixing of the housing, and the corresponding positions of the lugs and heat dissipation fins help to strengthen the housing.

[0024] Preferably, the casing is made of aluminum alloy.

[0025] By adopting the above technical solution, the casing has both good heat dissipation performance and meets the strength requirements of the casing.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. Heat dissipation ribs are installed on the outer wall of the motor housing, forming a radiating shape that surrounds the motor housing. These ribs are integrally molded with the housing, increasing the effective heat dissipation area and improving heat dissipation efficiency. Simultaneously, compared to similar housings, the addition of heat dissipation ribs enhances the rigidity and strength of the housing, allowing for thinner walls in non-heat dissipation rib areas, reducing material requirements and production costs. Furthermore, the heat dissipation ribs help suppress noise generated by vibration during motor operation. Additionally, reinforcing ribs added to the bearing housing significantly increase the strength of the bearing housing and the entire housing, thereby strengthening the stability of the connection between the bearing housing and the rotor, reducing displacement or damage to internal components such as the rotor due to vibration, and enhancing the housing's shock resistance.

[0028] 2. The elastic rubber block can effectively absorb the vibration from the car during driving, while the metal support block ensures the stability of the entire shell. Through the alternating arrangement of the elastic rubber block and the metal support block, it can ensure that the connection between the connecting base and the fixed position of the electronic oil pump has elastic floating space, and also ensure the connection strength between the connecting base and the fixed position of the electronic oil pump, so that the electronic oil pump is stably connected to its fixed position and has strong shock resistance.

[0029] 3. The oblique protrusion and the first protrusion not only enhance the stability of the bearing housing and increase the strength of the bearing housing and the entire housing, thereby enhancing the stability of the connection between the bearing housing and the rotor, reducing the displacement or damage of internal components such as the rotor due to vibration, and enhancing the shock resistance of the housing, but also restrict the position of components inside the cavity through the oblique protrusion and the first protrusion, thereby reducing the displacement or damage of internal components due to vibration and enhancing the shock resistance of the housing. Attached Figure Description

[0030] Figure 1 This is a partial sectional view of the front view of the electronic oil pump in this embodiment;

[0031] Figure 2 This is a comparison diagram of the casing cross-sectional view in this embodiment and the casing cross-sectional view in the prior art;

[0032] Figure 3 This is a cross-sectional view of the casing in this embodiment;

[0033] Figure 4 for Figure 1 Top view.

[0034] Reference numerals: 1. Housing; 2. Connecting base; 3. Cavity; 4. Bearing seat; 5. Reinforcing rib; 6. Heat dissipation rib; 7. Sloping protrusion; 8. First protrusion; 9. Shock-absorbing base; 10. Fastening screw; 11. Elastic rubber block; 12. Metal support block; 13. Ladder section; 14. Connecting part; 15. Connecting hole; 16. Shaft protrusion; 17. Lug; 18. End cover cavity; 19. Stator cavity; 20. Bearing cavity; 21. Hole; 22. Through hole. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0036] This application discloses a motor housing for an electronic oil pump.

[0037] Reference Figures 1-4 It includes a housing 1, an end cover and a connecting base 2. The end cover is connected to the housing 1 and the connecting base 2 is connected to the housing 1.

[0038] refer to Figure 3 The housing 1 has a cavity 3 at one end near the end cover. The cavity 3 includes an end cover cavity 18, a stator cavity 19 and a bearing cavity 20 from top to bottom. The end cover is inserted into the end cover cavity 18 of the housing. The inner diameter of the end cover cavity 18 is larger than the inner diameter of the stator cavity 19. The inner diameter of the stator cavity 19 is larger than the inner diameter of the bearing cavity 20. The housing 1 has a hole 21 at the inner end of the cavity 3. The housing 1 has a bearing seat 4 integrally formed at the hole 21. The inner diameter of the bearing seat 4 at the end near the hole 21 is smaller than the inner diameter of the end away from the hole 21.

[0039] The outer wall of the bearing housing 4 is integrally formed with a reinforcing rib 5. The reinforcing rib 5 includes an oblique protrusion 7 and a first protrusion 8. One end of the oblique protrusion 7 is integrally formed with the outer wall of the bearing housing 4, and the other end is integrally formed with the first protrusion 8. The lower sides of both the oblique protrusion 7 and the first protrusion 8 are integrally formed with the housing 1. The height of the oblique protrusion 7 near the first protrusion 8 is less than the height of the oblique protrusion 7 away from the first protrusion 8, and the height of the first protrusion 8 is greater than the height of the oblique protrusion 7. The oblique protrusion 7 and the first protrusion 8 not only enhance the stability of the bearing housing 4 and increase the strength of the bearing housing 4 and the entire housing, but also enhance the stability of the connection between the bearing housing 4 and the rotor, reduce the displacement or damage of internal components such as the rotor due to vibration, and enhance the shock resistance of the housing 1. Furthermore, the oblique protrusion 7 and the first protrusion 8 can restrict the position of components inside the cavity 3, thereby reducing the displacement or damage of internal components due to vibration and enhancing the shock resistance of the housing 1.

[0040] refer to Figure 2The outer wall of the housing 1 is integrally formed with heat dissipation ribs 6. The heat dissipation ribs 6 are strip-shaped and are arranged along the axial direction of the housing 1. The cross-section of the heat dissipation ribs 6 is approximately rectangular. The heat dissipation ribs 6 are arranged on the outer wall of the housing 1, so that the heat dissipation ribs 6 are arranged in a divergent shape around the outside of the motor housing. The heat dissipation ribs 6 are integrally formed with the housing 1. The heat dissipation ribs 6 increase the effective heat dissipation area of ​​the housing 1 and improve the heat dissipation efficiency. At the same time, compared with the same type of housing 1, the rigidity of the housing is improved due to the addition of heat dissipation ribs 6. This allows the housing 1 to be thinner in the non-heat dissipation ribs 6 positions, reducing the material required for motor housing production and lowering production costs. In addition, the setting of heat dissipation ribs 6 also helps to suppress the noise generated by vibration of the motor housing during operation. The strip-shaped rectangular heat dissipation ribs 6 not only make the heat dissipation ribs 6 easy to demold, but also reduce the raw materials required for heat dissipation ribs 6 while ensuring that the housing 1 has a large effective heat dissipation area.

[0041] The connecting base 2 includes a ladder section 13 and a connecting section 14. One end of the ladder section 13 is integrally formed with the outer wall of the housing 1, and the length of the ladder section 13 is less than or equal to the axial length of the housing 1. The other end of the ladder section 13 is integrally formed with the connecting section 14, and the ladder section 13 and the connecting section 14 are set at an angle. Two connecting holes 15 are opened on the connecting section 14. The axial direction of the connecting holes 15 is perpendicular to the axial direction of the housing 1. By setting the ladder section 13 and the connecting section 14 at an angle, when the connecting section 14 is connected to the position to be fixed of the electronic oil pump, the housing 1 connected to the ladder section 13 is suspended in the air. The shape of the ladder section 13 effectively connects the outer wall of the housing 1 and the connecting section 14, ensuring uniform force transmission and optimizing the stability of the connection between the connecting section 14 and the position to be fixed of the electronic oil pump.

[0042] A shock-absorbing base 9 is provided on the connecting part 14. The shock-absorbing base 9 includes fastening screws 10, elastic rubber blocks 11, and metal support blocks 12. Generally, an oil pump connection seat is provided at the installation position on the motor housing, and the oil pump connection seat also has connection holes 15. Two fastening screws 10 pass through the two connection holes 15 from above the connecting part 14, respectively. Two elastic rubber blocks 11 and two metal support blocks 12 are sleeved on the fastening screws 10 from below. The elastic rubber blocks 11 and metal support blocks 12 are arranged alternately, and the elastic rubber blocks 11 are set in close contact with the connecting part 14. The fastening screws 10 pass through the connecting part 14, the elastic rubber blocks 11, and the metal support blocks 12. After block 12, it passes through the connecting hole 15 of the oil pump connecting seat and is connected by the thread of the nut and the fastening screw 10 to limit the tightness of the connection between the connecting part 14 and the oil pump connecting seat. The elastic rubber block 11 can effectively absorb the vibration from the car driving process, while the metal support block 12 ensures the stability of the entire housing. Through the alternating arrangement of the elastic rubber block 11 and the metal support block 12, it can ensure that the connection between the connecting base 2 and the fixed position of the electronic oil pump has elastic floating space, and also ensure the connection strength between the connecting base 2 and the fixed position of the electronic oil pump, so that the electronic oil pump is stably connected to its fixed position and has strong shock resistance.

[0043] Furthermore, in this embodiment, the housing 1 has axle protrusions 16 at both ends, and lugs 17 on the axle protrusions 16. The position of the heat dissipation fins 6 corresponds to the position of the lugs 17. The axle protrusions 16 and lugs 17 facilitate the fixation of the housing 1, and the correspondence between the lugs 17 and the heat dissipation fins 6 helps to strengthen the strength of the housing 1.

[0044] Furthermore, in this embodiment, the motor housing is made of aluminum alloy, which gives the housing 1 both good heat dissipation performance and meets the strength requirements of the housing 1.

[0045] Furthermore, in this embodiment, the housing 1 is provided with a through hole 22 at one end near the bearing seat 4. The through hole 22 is located close to the bearing seat 4, which not only facilitates heat dissipation of the housing 1, but also helps to reduce the raw materials required for the housing 1 and reduce the production cost of the housing 1.

[0046] Furthermore, in this embodiment, the present invention does not impose any particular limitation on the shock-absorbing base 9. Any shock-absorbing structure known to those skilled in the art that can realize the shock-absorbing function at the connection between the connecting part 14 and the oil pump connecting seat can be used. Those skilled in the art can select and adjust according to the specific application, raw material conditions and product requirements.

[0047] It should be noted that the various embodiments of this application can be arbitrarily combined into new embodiments, provided that the solutions do not conflict and the technical solutions can coexist.

[0048] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An electric motor housing for an electric oil pump, characterized by: The utility model provides a computer shell, including casing (1) and connecting base (2), connecting base (2) is connected with casing (1), the cavity (3) is seted up in casing (1), bearing seat (4) is equipped in the cavity (3), reinforcing rib (5) is equipped on bearing seat (4), the outer wall of casing (1) is equipped with heat dissipation rib (6).

2. The electric machine housing of claim 1, wherein: The heat dissipation rib (6) is strip-shaped, and the heat dissipation rib (6) is arranged along the axial direction of the casing (1);The cross section of the heat dissipation rib (6) is approximately rectangular.

3. The motor housing of claim 1, wherein: The reinforcing rib (5) is arranged on the outer wall of the bearing seat (4), and the reinforcing rib (5) comprises an inclined protrusion (7) and a first protrusion (8), one end of the inclined protrusion (7) is connected with the bearing seat (4), the other end of the inclined protrusion (7) is connected with the first protrusion (8), the height of the end of the inclined protrusion (7) close to the first protrusion (8) is less than the height of the end of the inclined protrusion (7) away from the first protrusion (8), and the height of the first protrusion (8) is greater than the height of the inclined protrusion (7).

4. The motor housing of claim 1, wherein: The connecting base (2) is provided with a shock-absorbing base (9).

5. The electric machine housing of claim 4, wherein: The shock-absorbing base (9) comprises a fastening screw (10), an elastic rubber block (11) and a metal supporting block (12), the fastening screw (10) is connected with the connecting base (2), the elastic rubber block (11) and the metal supporting block (12) are located on the fastening screw (10), and the elastic rubber block (11) and the metal supporting block (12) are alternately arranged.

6. The motor housing of claim 4, wherein: The connecting base (2) comprises a ladder section (13) and a connecting section (14), one end of the ladder section (13) is connected with the outer wall of the casing (1), the other end of the ladder section (13) is connected with the connecting section (14), the connecting section (14) is arranged at an angle with the ladder section (13), and a connecting hole (15) is formed in the connecting section (14).

7. The electric machine housing of claim 6, wherein: The axial direction of the connecting hole (15) is perpendicular to the axial direction of the casing (1).

8. The motor housing of claim 5, wherein: The elastic rubber block (11) is arranged close to the connecting base (2).

9. The motor housing of claim 1, wherein: Both ends of the casing (1) are provided with shaft protrusions (16), the shaft protrusions (16) are provided with lugs (17), and the positions of the heat dissipation ribs (6) correspond to the positions of the lugs (17).

10. The motor housing of claim 1, wherein: The material of the casing (1) is aluminum alloy.

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