High-reliability multi-split combined lubricating mechanism
By integrating the oil supply pump and return pump into a single unit and driving them with the same drive component, the problem of limited space in traditional lubrication systems is solved, achieving efficient lubricating oil circulation and impurity filtration, thus protecting the engine.
Patent Information
- Application Number
- CN202520179316.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-05
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-02-05
AI Technical Summary
In traditional engine lubrication systems, the space for multiple individual oil pumps is limited, making it difficult to meet the oil circulation requirements of small spaces and large displacement engines, and the lubrication circuit is complex.
Design a highly reliable multi-unit combined lubrication mechanism that integrates the oil supply pump and the return pump into one unit, drives them with the same drive component, and sets a filter screen on the return pump housing to filter the lubricating oil.
It achieves efficient lubricating oil circulation within a limited space, saving space, and effectively removes impurities from the lubricating oil through a filter, protecting the engine.
Smart Images
Figure CN223649070U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of oil pump technology, and in particular to a highly reliable multi-unit combined lubrication mechanism. Background Technology
[0002] Modern car engines have increasingly complex structures and intricate lubrication circuits. Traditional engine lubrication systems rely on multiple individual oil pumps operating simultaneously to meet engine operating requirements. However, with technological advancements, engine structures have become more compact, leaving less space for oil pumps and resulting in more complex lubrication circuits. The current method of using multiple individual oil pumps is insufficient to meet the oil circulation needs of engines with small spaces and large displacements. Utility Model Content
[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a highly reliable multi-unit combined lubrication mechanism.
[0004] The objective of this utility model is achieved through the following technical solution:
[0005] A highly reliable multi-unit combined lubrication mechanism includes an oil supply pump housing, an oil supply pump cover, a return oil pump housing, a return oil pump cover, an oil supply pump core assembly, a first return oil pump core assembly, and a second return oil pump core assembly. The oil supply pump cover is sealed to one end of the oil supply pump housing, and the other end of the oil supply pump housing is sealed and fixedly connected to one end of the return oil pump housing. The return oil pump cover is sealed to the other end of the return oil pump housing. An oil supply pump chamber is provided inside the oil supply pump housing. The oil supply pump core assembly is disposed in the oil supply pump chamber, and its input end passes through the oil supply pump cover and is connected to a drive component. A first return oil pump chamber is provided at one end of the return oil pump housing, and a second return oil pump chamber is provided at the other end. The first return oil pump chamber and the second return oil pump chamber are connected by a return oil channel. The first return oil pump core assembly is disposed in the first return oil pump chamber and its input end passes through the oil supply pump housing and is driven to the output end of the oil supply pump core assembly. The second return oil pump core assembly is disposed in the second return oil pump chamber and its input end passes through the bottom of the second return oil pump chamber and is driven to the output end of the first return oil pump core assembly. The oil supply pump housing is provided with an oil supply inlet and an oil supply outlet that communicate with the oil supply pump chamber. The return oil pump housing is provided with a first return oil inlet and a return oil outlet that communicate with the first return oil pump chamber. The return oil pump housing is also provided with a second return oil inlet that communicates with the second return oil pump chamber.
[0006] Furthermore, the oil supply pump core assembly includes an oil supply drive shaft, an internal oil supply gear, and an external oil supply gear. The external oil supply gear is rotatably disposed within the oil supply pump cavity, and the internal oil supply gear is rotatably disposed within the external oil supply gear and meshes with it. The oil supply drive shaft is coaxially and fixedly connected to the internal oil supply gear, and one end of the oil supply drive shaft extends through the oil supply pump cover and is sealed to the oil supply pump cover.
[0007] Furthermore, the first return oil pump core assembly includes a first return oil frame, a first main rotating shaft, a first auxiliary rotating shaft, a first main rotating gear, and a first auxiliary rotating gear. The first return oil frame is disposed in and cooperates with the first return oil pump cavity. The first main rotating shaft and the first auxiliary rotating shaft are both rotatably disposed on the first return oil frame. The first main rotating shaft is provided with the first main rotating gear at both ends. The first auxiliary rotating shaft is provided with the first auxiliary rotating gear at both ends, which meshes with the two first main rotating gears respectively. The input end of the first main rotating shaft is connected to the output end of the oil supply drive shaft. The first main rotating shaft is sealed to the oil supply pump housing.
[0008] Furthermore, the second return oil pump core assembly includes a second return oil frame, a second main rotating shaft, a second auxiliary rotating shaft, a second main rotating gear, and a second auxiliary rotating gear. The second return oil frame is disposed in and cooperates with the second return oil pump chamber. The second main rotating shaft and the second auxiliary rotating shaft are both rotatably disposed on the second return oil frame. The second main rotating shaft is provided with the second main rotating gear at both ends. The second auxiliary rotating shaft is provided with the second auxiliary rotating gear at both ends, which meshes with the two second main rotating gears respectively. The input end of the second main rotating shaft is connected to the output end of the first main rotating gear.
[0009] Furthermore, the first return oil inlet is provided on both opposite sides of the first return oil pump chamber.
[0010] Furthermore, the second return oil inlet is provided on both opposite sides of the second return oil pump chamber.
[0011] Furthermore, a first oil filter port communicating with the first oil return pump chamber is provided on one end of the oil return pump housing, and a second oil filter port communicating with the second oil return pump chamber is provided on the other end of the oil return pump housing.
[0012] Furthermore, the first oil filter port is located on the oil supply pump housing and communicates with the first oil return pump chamber.
[0013] Furthermore, both the first and second oil filter ports are sealed with filter screens.
[0014] The beneficial effects of this utility model are:
[0015] 1) In this technology, with the cooperation of the oil supply pump housing and the oil return pump housing, multiple individual oil pumps can be integrated into one unit and driven by a single drive component, which can effectively save space.
[0016] 2) In this technology, the filter screen can effectively filter the recovered oil. Attached Figure Description
[0017] Figure 1 The three-dimensional structure of this oil pump Figure 1 ;
[0018] Figure 2 The three-dimensional structure of this oil pump Figure 2 ;
[0019] Figure 3 The internal structure of this oil pump Figure 1 ;
[0020] Figure 4 The internal structure of this oil pump Figure 2 ;
[0021] Figure 5 This is a diagram showing the connection structure between the oil supply pump core assembly, the first return oil pump core assembly, and the second return oil pump core assembly.
[0022] In the diagram, 1-supply pump housing, 2-supply pump cover, 3-return pump housing, 4-return pump cover, 5-return channel, 6-supply inlet, 7-supply outlet, 8-first return inlet, 9-return outlet, 10-second return inlet, 11-supply drive shaft, 12-supply internal gear, 13-supply external gear, 14-first return frame, 15-first main shaft, 16-first auxiliary shaft, 17-first main gear, 18-first auxiliary gear, 19-second return frame, 20-second main shaft, 21-second auxiliary shaft, 22-second main gear, 23-second auxiliary gear, 24-first filter port, 25-second filter port, 26-filter screen. Detailed Implementation
[0023] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0024] See Figures 1-5 This utility model provides a technical solution:
[0025] A highly reliable multi-unit combined lubrication mechanism includes an oil supply pump housing 1, an oil supply pump cover 2, a return oil pump housing 3, a return oil pump cover 4, an oil supply pump core assembly, a first return oil pump core assembly, and a second return oil pump core assembly. The oil supply pump cover 2 is sealed on one end of the oil supply pump housing 1, and the other end of the oil supply pump housing 1 is sealed and fixedly connected to one end of the return oil pump housing 3. The other end of the return oil pump housing 3 is sealed with the return oil pump cover 4. An oil supply pump chamber is provided inside the oil supply pump housing 1, and the oil supply pump core assembly is disposed in the oil supply pump chamber with its input end passing through the oil supply pump cover 2 and being driven by a drive component. The first return oil pump chamber is provided on one end of the return oil pump housing 3, and the second return oil pump chamber is provided on the other end. The pump chambers, specifically the first and second return oil pump chambers, are connected via a return oil channel 5. The first return oil pump core assembly is located within the first return oil pump chamber, with its input end passing through the supply pump housing 1 and being driven by the output end of the supply pump core assembly. The second return oil pump core assembly is located within the second return oil pump chamber, with its input end passing through the bottom of the second return oil pump chamber and being driven by the output end of the first return oil pump core assembly. The supply pump housing 1 has a supply inlet 6 and a supply outlet 7 communicating with the supply pump chamber. The return oil pump housing 3 has a first return oil inlet 8 and a return oil outlet 9 communicating with the first return oil pump chamber, and a second return oil inlet 10 communicating with the second return oil pump chamber. The first return oil pump chamber has a first return oil inlet 8 on each opposite side, and the second return oil pump chamber has a second return oil inlet 10 on each opposite side. The oil supply pump housing 1, oil supply pump cover 2, return oil pump housing 3, and return oil pump cover 4 together form two pumps: one is the oil supply pump, and the other is the return oil pump. The oil supply pump and the return oil pump are two independent pumps connected together, driven by the same drive unit, which is a motor as used in existing technology. The oil supply pump contains an oil supply pump core assembly, and the return oil pump contains a first return oil pump core assembly and a second return oil pump core assembly. The oil supply pump has an oil supply inlet 6 and an oil supply outlet 7, while the return oil pump has a first return oil inlet 8, a second return oil inlet 10, and a return oil outlet 9. A return oil channel 5 connects the first and second return oil pump chambers within the return oil pump, ultimately allowing oil to exit only from the return oil outlet 9.
[0026] In some embodiments, the oil supply pump core assembly includes an oil supply drive shaft 11, an internal oil supply gear 12, and an external oil supply gear 13. The external oil supply gear 13 is rotatably disposed within the oil supply pump cavity, and the internal oil supply gear 12 is rotatably disposed within and meshes with the external oil supply gear 13. The oil supply drive shaft 11 is coaxially and fixedly connected to the internal oil supply gear 12, and one end of the oil supply drive shaft 11 extends through the oil supply pump cover 2 and is sealed to the cover 2. A drive component drives the oil supply drive shaft 11 to rotate, which in turn drives the internal oil supply gear 12 to rotate. The internal oil supply gear 12, in conjunction with the external oil supply gear 13, pressurizes the oil entering through the oil supply inlet 6 and discharges it from the oil supply outlet 7. The oil supply drive shaft 11 also transmits power to the first main shaft 15 and the second main shaft 20.
[0027] In some embodiments, the first return oil pump core assembly includes a first return oil frame 14, a first main rotating shaft 15, a first auxiliary rotating shaft 16, a first main rotating gear 17, and a first auxiliary rotating gear 18. The first return oil frame 14 is disposed in and cooperates with the first return oil pump chamber. The first main rotating shaft 15 and the first auxiliary rotating shaft 16 are both rotatably disposed on the first return oil frame 14. The first main rotating shaft 15 is provided with a first main rotating gear 17 at both ends. The first auxiliary rotating shaft 16 is provided with a first auxiliary rotating gear 18 at both ends, which meshes with the two first main rotating gears 17 respectively. The input end of the first main rotating shaft 15 is connected to the output end of the oil supply drive shaft 11. The first main rotating shaft 15 is sealed to the oil supply pump housing 1. The first return oil rack 14 is used to install the first main rotating shaft 15 and the first auxiliary rotating shaft 16. The two first main rotating gears 17 fixedly installed on the first main rotating shaft 15 cooperate with the two first auxiliary rotating gears 18 on the first auxiliary rotating shaft 16 to realize oil pumping. The first main rotating shaft 15 also transmits the power on the oil supply drive shaft 11 to the second main rotating shaft 20. Therefore, the end of the first main rotating shaft 15 is set in the oil supply pump housing 1, and the oil supply pump housing 1 and the first main rotating shaft 15 are sealed together.
[0028] In some embodiments, the second return oil pump core assembly includes a second return oil frame 19, a second main rotating shaft 20, a second auxiliary rotating shaft 21, a second main rotating gear 22, and a second auxiliary rotating gear 23. The second return oil frame 19 is disposed in and cooperates with the second return oil pump chamber. The second main rotating shaft 20 and the second auxiliary rotating shaft 21 are both rotatably disposed on the second return oil frame 19. The second main rotating shaft 20 is provided with a second main rotating gear 22 at both ends. The second auxiliary rotating shaft 21 is provided with a second auxiliary rotating gear 23 at both ends, which meshes with the two second main rotating gears 22 respectively. The input end of the second main rotating shaft 20 is connected to the output end of the first main rotating gear 17. The outer wall of the second oil return frame 19 is fitted with the inner wall of the second oil return pump chamber. The second oil return frame 19 is used to install the second main rotating shaft 20 and the second auxiliary rotating shaft 21. The second main rotating shaft 20 is fixedly installed at both ends, and the second auxiliary rotating shaft 21 is installed at both ends. The two second main rotating shafts 22 and the two second auxiliary rotating shafts 23 work together to extract oil. The ends of the second main rotating shaft 20 and the second auxiliary rotating shaft 21 extend to the outside of the oil return pump cover 4. The second main rotating shaft 20 and the second auxiliary rotating shaft 21 are both sealed to the oil return pump cover 4.
[0029] In some embodiments, a first oil filter port 24 communicating with a first oil return pump chamber is provided at one end of the oil return pump housing 3, and a second oil filter port 25 communicating with a second oil return pump chamber is provided at the other end of the oil return pump housing 3. The first oil filter port 24 is provided on the oil supply pump housing 1 and communicates with the first oil return pump chamber. Both the first oil filter port 24 and the second oil filter port 25 are sealed with filter screens 26. Since the used lubricating oil contains impurities, if these impurities continue to circulate, they will scratch the car engine, thus damaging it. Therefore, all lubricating oil that has passed through the car engine returns to the oil return pump housing 3 through the first oil filter port 24 or the second oil filter port 25 for pressurization, and the filter screens 26 are used to filter the used lubricating oil.
[0030] In the description of this utility model, it should be understood that the terms "upper", "lower", "bottom", "one end", "top", "middle", "other end", "coaxial", "one side", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "setting", "installation", "connection", "fixing", "hinged" and other such terms should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0032] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.
Claims
1. A highly reliable multi-unit combined lubrication mechanism, characterized in that: The system includes an oil supply pump housing (1), an oil supply pump cover (2), a return oil pump housing (3), a return oil pump cover (4), an oil supply pump core assembly, a first return oil pump core assembly, and a second return oil pump core assembly. The oil supply pump cover (2) is sealed on one end of the oil supply pump housing (1), and the other end of the oil supply pump housing (1) is sealed and fixedly connected to one end of the return oil pump housing (3). The return oil pump cover (4) is sealed on the other end of the return oil pump housing (3). An oil supply pump chamber is provided inside the oil supply pump housing (1). The oil supply pump core assembly is located in the oil supply pump chamber, and its input end passes through the oil supply pump cover (2) and is connected to the drive component. A first return oil pump chamber is provided on one end of the return oil pump housing (3), and a second return oil pump chamber is provided on the other end. The first return oil pump chamber... The first oil return pump core assembly is connected to the second oil return pump chamber through the oil return channel (5). The first oil return pump core assembly is set in the first oil return pump chamber and its input end passes through the oil supply pump housing (1) and is driven to the output end of the oil supply pump core assembly. The second oil return pump core assembly is set in the second oil return pump chamber and its input end passes through the bottom of the second oil return pump chamber and is driven to the output end of the first oil return pump core assembly. The oil supply pump housing (1) is provided with an oil supply inlet (6) and an oil supply outlet (7) that communicate with the oil supply pump chamber. The oil return pump housing (3) is provided with a first oil return inlet (8) and an oil return outlet (9) that communicate with the first oil return pump chamber. The oil return pump housing (3) is also provided with a second oil return inlet (10) that communicates with the second oil return pump chamber.
2. The high-reliability multi-unit combined lubrication mechanism according to claim 1, characterized in that: The oil supply pump core assembly includes an oil supply drive shaft (11), an internal oil supply gear (12), and an external oil supply gear (13). The external oil supply gear (13) is rotatably disposed in the oil supply pump cavity. The internal oil supply gear (12) is rotatably disposed in the external oil supply gear (13) and meshes with the external oil supply gear (13). The oil supply drive shaft (11) is coaxially and fixedly connected to the internal oil supply gear (12). One end of the oil supply drive shaft (11) passes through the oil supply pump cover (2) and is sealed to the oil supply pump cover (2).
3. The high-reliability multi-unit combined lubrication mechanism according to claim 2, characterized in that: The first return oil pump core assembly includes a first return oil frame (14), a first main rotating shaft (15), a first auxiliary rotating shaft (16), a first main rotating gear (17), and a first auxiliary rotating gear (18). The first return oil frame (14) is disposed in the first return oil pump cavity and cooperates with the first return oil pump cavity. The first main rotating shaft (15) and the first auxiliary rotating shaft (16) are both rotatably disposed on the first return oil frame (14). The first main rotating shaft (15) is provided with the first main rotating gear (17) at both ends. The first auxiliary rotating shaft (16) is provided with the first auxiliary rotating gear (18) at both ends, which meshes with the two first main rotating gears (17). The input end of the first main rotating shaft (15) is connected to the output end of the oil supply drive shaft (11). The first main rotating shaft (15) is sealed to the oil supply pump housing (1).
4. The high-reliability multi-unit combined lubrication mechanism according to claim 3, characterized in that: The second return oil pump core assembly includes a second return oil frame (19), a second main rotating shaft (20), a second auxiliary rotating shaft (21), a second main rotating gear (22), and a second auxiliary rotating gear (23). The second return oil frame (19) is disposed in the second return oil pump chamber and cooperates with the second return oil pump chamber. The second main rotating shaft (20) and the second auxiliary rotating shaft (21) are both rotatably disposed on the second return oil frame (19). The second main rotating shaft (20) is provided with the second main rotating gear (22) at both ends. The second auxiliary rotating shaft (21) is provided with the second auxiliary rotating gear (23) at both ends, which meshes with the two second main rotating gears (22). The input end of the second main rotating shaft (20) is connected to the output end of the first main rotating gear (17) for transmission.
5. A high-reliability multi-unit combined lubrication mechanism according to any one of claims 1-4, characterized in that: The first return oil inlet (8) is provided on both opposite sides of the first return oil pump chamber.
6. A high-reliability multi-unit combined lubrication mechanism according to any one of claims 1-4, characterized in that: The second return oil inlet (10) is provided on both opposite sides of the second return oil pump chamber.
7. A high-reliability multi-unit combined lubrication mechanism according to any one of claims 1-4, characterized in that: One end of the return oil pump housing (3) is provided with a first oil filter port (24) communicating with the first return oil pump chamber, and the other end of the return oil pump housing (3) is provided with a second oil filter port (25) communicating with the second return oil pump chamber.
8. A high-reliability multi-unit combined lubrication mechanism according to claim 7, characterized in that: The first oil filter port (24) is located on the oil supply pump housing (1) and communicates with the first oil return pump chamber.
9. A high-reliability multi-unit combined lubrication mechanism according to claim 7, characterized in that: Both the first oil filter port (24) and the second oil filter port (25) are sealed with filter screens (26).