Oil pump with dual-drive function

Abstract

The utility model discloses an oil pump with a dual-drive function, which comprises a driving gear, a driven gear, a first input shaft, a second input shaft, a pump body component and a transmission separation component, the driving gear and the driven gear are rotatably arranged in the pump body component, and the driving gear is meshed with the driven gear; one end of the first input shaft is arranged in the pump body assembly and is in transmission connection with one end of the driving gear through the transmission separation assembly, and one end of the second input shaft is arranged in the pump body assembly and is in transmission connection with the other end of the driving gear through the transmission separation assembly. The two ends of the driving gear are connected with the first input shaft and the second input shaft through the transmission separation assembly respectively, and the transmission separation assembly is integrated in the pump body assembly, so that the whole structure is simplified, and the manufacturing cost is low.

Description

Technical Field

[0001] This utility model relates to the field of oil pump technology, and in particular to an oil pump with dual drive function. Background Technology

[0002] The oil pump, as a core component of the engine, plays a crucial role in engine performance. Traditional oil pumps are driven solely by the engine crankshaft. At low temperatures, the oil's fluidity decreases, leading to increased viscosity and thus increased pump resistance. This results in ineffective lubrication of parts requiring lubrication during cold starts, increasing friction, accelerating wear on components, reducing engine performance and lifespan, increasing fuel consumption, and even causing difficulty starting the engine. Therefore, current technology uses an electric motor to initially drive the oil pump. However, this switching mechanism is complex and cumbersome, requiring the disconnection of engine power when the motor drives the pump, and vice versa, increasing costs. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an oil pump with dual drive function.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] An oil pump with dual drive function includes a drive gear, a driven gear, a first input shaft, a second input shaft, a pump body assembly, and a transmission separation assembly. The drive gear and the driven gear are both rotatably disposed within the pump body assembly, and the drive gear meshes with the driven gear. One end of the first input shaft is disposed within the pump body assembly and is drivenly connected to one end of the drive gear through the transmission separation assembly. One end of the second input shaft is disposed within the pump body assembly and is drivenly connected to the other end of the drive gear through the transmission separation assembly.

[0006] Furthermore, the transmission separation assembly includes a connecting outer ring, an inner ring protrusion, a connecting end, a limiting protrusion, a rotating rod, and a one-way clamping block. The limiting protrusion is fixedly disposed on the middle part of the connecting end. One end of the rotating rod is rotatably disposed on the connecting end, and the other end of the rotating rod is fixedly connected to one end of the one-way clamping block. The one-way clamping block cooperates with the limiting protrusion, and the other end of the limiting protrusion cooperates with the inner ring protrusion. The inner ring protrusion is fixedly disposed on the inner wall of the connecting outer ring.

[0007] Furthermore, two inner ring protrusions are centrally symmetrically arranged on the inner wall of the connecting outer ring, and the two inner ring protrusions respectively cooperate with the two one-way clamping blocks, which are respectively arranged on the two rotating rods.

[0008] Furthermore, the drive gear, the first input shaft, and the second input shaft are coaxially arranged.

[0009] Furthermore, the driving gear is provided with external teeth, and the driven gear is provided with internal teeth that mesh with the external teeth.

[0010] Furthermore, the pump body assembly includes a pump body and a pump cover. The pump body is provided with a pump cavity that cooperates with the driven gear. The pump cavity is provided with a pump cover that seals with the pump body. The pump cover is provided with a low-pressure oil inlet communicating with the pump cavity. The pump body is provided with a high-pressure oil outlet communicating with the pump cavity. The first input shaft is rotatably mounted on the pump cover, and the second input shaft is rotatably mounted on the pump body.

[0011] Furthermore, a first bearing is provided between the first input shaft and the pump cover, and a second bearing is provided between the second input shaft and the pump body.

[0012] Furthermore, the pump body and the pump cover are fixedly connected by bolts.

[0013] The beneficial effects of this utility model are:

[0014] 1) In this technology, the two ends of the drive gear are connected to the first input shaft and the second input shaft respectively through the transmission separation assembly. The transmission separation assembly is integrated inside the pump body assembly, which simplifies the whole structure and reduces the manufacturing cost.

[0015] 2) In this technology, the transmission and separation of force are achieved through the cooperation of the inner ring protrusion and the one-way clamping block. Attached Figure Description

[0016] Figure 1 This is a 3D structural diagram of the machine's oil pump;

[0017] Figure 2 This is a diagram showing the internal structure of the machine's oil pump;

[0018] Figure 3 This is a diagram showing the connection structure between the drive gear, the first input shaft, and the second input shaft.

[0019] Figure 4 This is a diagram showing the working structure of the unidirectional clamping block and the limiting protrusion.

[0020] Figure 5 This is a diagram showing the engagement structure between the unidirectional clamping block and the limiting protrusion when the unidirectional clamping block is not in operation.

[0021] Figure 6 Diagram showing the engagement structure between the unidirectional clamping block and the inner ring protrusion during operation;

[0022] Figure 7 This is a diagram showing the mating structure between the one-way clamping block and the inner ring protrusion when the one-way clamping block is not working.

[0023] In the diagram, 1-driving gear, 2-driven gear, 3-first input shaft, 4-second input shaft, 5-connecting outer ring, 6-inner ring protrusion, 7-connecting end, 8-limiting protrusion, 9-rotating rod, 10-one-way clamping block, 11-pump body, 12-pump cover, 13-low pressure oil inlet, 14-high pressure oil outlet, 15-first bearing, 16-second bearing, 17-bolt. Detailed Implementation

[0024] 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.

[0025] See Figures 1-7 This utility model provides a technical solution:

[0026] An oil pump with dual-drive function includes a drive gear 1, a driven gear 2, a first input shaft 3, a second input shaft 4, a pump body assembly, and a transmission separation assembly. Both the drive gear 1 and the driven gear 2 are rotatably mounted within the pump body assembly, and the drive gear 1 meshes with the driven gear 2. One end of the first input shaft 3 is located within the pump body assembly and is drively connected to one end of the drive gear 1 via the transmission separation assembly. One end of the second input shaft 4 is located within the pump body assembly and is drively connected to the other end of the drive gear 1 via the transmission separation assembly. The pump body assembly houses the drive gear 1, the driven gear 2, the first input shaft 3, the second input shaft 4, and the transmission separation assembly. The drive gear 1 and the driven gear 2 work together to convert incoming low-pressure oil into high-pressure oil for discharge. The first input shaft 3 transmits power from the engine to the drive gear 1, and the second input shaft 4 transmits power from the electric motor to the drive gear 1. When the first input shaft 3 transmits power to the driving gear 1 through the transmission separation assembly, the power between the driving gear 1 and the second input shaft 4 is cut off by the transmission separation assembly between the driven gear 1 and the second input shaft 4; when the second input shaft 4 transmits power to the driving gear 1 through the transmission separation assembly, the power between the driving gear 1 and the first input shaft 3 is cut off by the transmission separation assembly between the driving gear 1 and the first input shaft 3.

[0027] In some embodiments, the transmission separation assembly includes a connecting outer ring 5, an inner ring protrusion 6, a connecting end 7, a limiting protrusion 8, a rotating rod 9, and a one-way clamping block 10. The limiting protrusion 8 is fixedly disposed on the middle of the connecting end 7. One end of the rotating rod 9 is rotatably disposed on the connecting end 7, and the other end of the rotating rod 9 is fixedly connected to one end of the one-way clamping block 10. The one-way clamping block 10 cooperates with the limiting protrusion 8, and the other end of the limiting protrusion 8 cooperates with the inner ring protrusion 6. The inner ring protrusion 6 is fixedly disposed on the inner wall of the connecting outer ring 5. The connecting outer ring 5 is coaxially fixedly disposed on both ends of the drive gear 1, and the connecting end 7 is fixedly disposed on the ends of the first input shaft 3 and the second input shaft 4. The limiting protrusion 8 restricts the rotation of the one-way clamping block 10, and the rotating rod 9 drives the one-way clamping block 10. The one-way clamping block 10 and the inner ring protrusion 6 clamp together to achieve force transmission, and the one-way clamping block 10 and the inner ring protrusion 6 relax to achieve force cutoff.

[0028] In some embodiments, two inner ring protrusions 6 are centrally symmetrically arranged on the inner wall of the outer ring 5. The two inner ring protrusions 6 respectively cooperate with two one-way clamping blocks 10, which are respectively disposed on two rotating rods 9. The presence of two inner ring protrusions 6, two rotating rods 9, and two one-way clamping blocks 10 arranged centrally symmetrically ensures that the transmission separation assembly is subjected to uniform force during the high-speed rotation of the drive gear 1, preventing uneven force distribution from causing wear and damage to the transmission separation assembly.

[0029] In some embodiments, the drive gear 1, the first input shaft 3, and the second input shaft 4 are coaxially arranged. This coaxial arrangement facilitates installation, promotes force transmission, and simplifies the overall structure.

[0030] In some embodiments, the driving gear 1 is provided with external teeth, and the driven gear 2 is provided with internal teeth that mesh with the external teeth. The driving gear 1 and the driven gear 2 cooperate to form an internal meshing gear pump.

[0031] In some embodiments, the pump assembly includes a pump body 11 and a pump cover 12. The pump body 11 has a pump chamber that meshes with a driven gear 2. The pump cover 12, which is sealed to fit with the pump body 11, is provided on the pump chamber. The pump cover 12 has a low-pressure oil inlet 13 communicating with the pump chamber. The pump body 11 has a high-pressure oil outlet 14 communicating with the pump chamber. A first input shaft 3 is rotatably mounted on the pump cover 12, and a second input shaft 4 is rotatably mounted on the pump body 11. The pump body 11 and the pump cover 12 are fixedly connected by bolts 17. The pump chamber is used to install the drive gear 1 and the driven gear 2. The drive gear 1 and the driven gear 2 mesh to pressurize the low-pressure hydraulic oil entering through the low-pressure oil inlet 13 and discharge high-pressure hydraulic oil through the high-pressure oil outlet 14. The pump body 11 and the pump cover 12 are sealed to each other and fixed together by bolts 17 as used in the prior art.

[0032] In some embodiments, a first bearing 15 is provided between the first input shaft 3 and the pump cover 12, and a second bearing 16 is provided between the second input shaft 4 and the pump body 11. Both the first bearing 15 and the second bearing 16 are deep groove ball bearings in the prior art. The first input shaft 3 is fixed to the pump cover 12 by the first bearing 15, and the second input shaft 4 is fixed to the pump body 11 by the second bearing 16.

[0033] 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.

[0034] 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.

[0035] 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. An oil pump having a dual drive function, characterized by: The transmission comprises a driving gear (1), a driven gear (2), a first input shaft (3), a second input shaft (4), a pump body assembly and a transmission separation assembly, the driving gear (1) and the driven gear (2) are both rotationally arranged in the pump body assembly, the driving gear (1) is engaged with the driven gear (2), one end of the first input shaft (3) is arranged in the pump body assembly and is in transmission connection with one end of the driving gear (1) through the transmission separation assembly, one end of the second input shaft (4) is arranged in the pump body assembly and is in transmission connection with the other end of the driving gear (1) through the transmission separation assembly.

2. The oil pump with dual drive function according to claim 1, characterized in that: The transmission separation assembly comprises a connecting outer ring (5), an inner ring protrusion (6), a connecting end head (7), a limiting protrusion (8), a rotating rod (9) and a one-way clamping block (10), the limiting protrusion (8) is fixedly arranged on the middle part of the connecting end head (7), one end of the rotating rod (9) is rotationally arranged on the connecting end head (7), the other end of the rotating rod (9) is fixedly connected with one end of the one-way clamping block (10), the one-way clamping block (10) is matched with the limiting protrusion (8), the other end of the limiting protrusion (8) is matched with the inner ring protrusion (6), and the inner ring protrusion (6) is fixedly arranged on the inner wall of the connecting outer ring (5).

3. The oil pump with dual drive function according to claim 2, characterized in that: Two inner ring protrusions (6) are symmetrically arranged on the inner wall of the connecting outer ring (5), and two one-way clamping blocks (10) are matched with the two inner ring protrusions (6) respectively, and the two one-way clamping blocks (10) are arranged on the two rotating rods (9) respectively.

4. The oil pump with dual drive function according to any one of claims 1-3, characterized in that: The driving gear (1), the first input shaft (3) and the second input shaft (4) are coaxially arranged.

5. The oil pump with dual drive function according to any one of claims 1-3, characterized in that: The driving gear (1) is provided with external teeth, and the driven gear (2) is provided with internal teeth matched with the external teeth.

6. The oil pump with dual drive function according to claim 5, characterized in that: The pump body assembly comprises a pump body (11) and a pump cover (12), the pump body (11) is provided with a pump cavity matched with the driven gear (2), the pump cavity is provided with the pump cover (12) in sealing cooperation with the pump body (11), the pump cover (12) is provided with a low-pressure oil inlet (13) communicated with the pump cavity, the pump body (11) is provided with a high-pressure oil outlet (14) communicated with the pump cavity, the first input shaft (3) is rotationally arranged on the pump cover (12), and the second input shaft (4) is rotationally arranged on the pump body (11).

7. The oil pump with dual drive function according to claim 6, characterized in that: The first bearing (15) is arranged between the first input shaft (3) and the pump cover (12), and the second bearing (16) is arranged between the second input shaft (4) and the pump body (11).

8. The oil pump with dual drive function according to claim 6, characterized in that: The pump body (11) and the pump cover (12) are fixedly connected through the bolt (17).

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