CN217206607U - Oil well pump structure, integrated oil pump structure and motorcycle - Google Patents

Abstract

The utility model provides an oil well pump structure, an integrated oil pump structure and a motorcycle, which comprises an oil pump shell, a first rotating piece and a second rotating piece; the oil pump shell is provided with a first oil inlet, a second oil inlet and an oil outlet; the first rotating part and the second rotating part can rotate relatively to drive oil entering from the first oil inlet to flow to the oil outlet through the first oil return passage and drive oil entering from the second oil inlet to flow to the oil outlet through the second oil return passage. The utility model provides an oil-well pump structure, under the relative pivoted effect of first rotation piece and second rotation piece, the fluid that first oil inlet got into is led to oil outlet department through first oil return duct, the fluid that the second oil inlet got into is led to the oil-out through the second oil return duct, first oil return duct and the individual oil return path of second oil return duct in the pump casing carry out the oil return, can effectively improve the oil return efficiency of fluid, be convenient for reduce oil-well pump structure's the quantity that sets up, and then reduced the volume and the weight of component, the lightweight has been realized.

Description

Oil well pump structure, integrated oil pump structure and motorcycle

Technical Field

The utility model belongs to the technical field of the oil pump structure, more specifically say, relate to an oil-well pump structure, integrated oil pump structure and motorcycle.

Background

The motorcycle has strict control standards on quality and volume in the design process, so that the oil consumption of the whole motorcycle is required to be reduced on one hand, and the cost of the whole motorcycle is also required to be reduced on the other hand. The existing motorcycle generally integrates an engine and a transmission on the same cavity, so that the arrangement of parts in the cavity is relatively compact.

The special motorcycle racing car also needs to consider the bending process when the car runs on a curve, normal oil return of an engine is easily influenced due to the inclination of the angle of a car body in bending, and a lubricating oil pump is difficult to ensure to continuously pump oil into the engine, so that parts needing lubrication of the engine are easily subjected to abnormal wear caused by lack of lubrication and cooling. Although the oil well pump is integrated on the lubricating oil pump in the prior art, because one oil well pump only can correspond to one oil return channel, when the oil return channels are more, a plurality of oil well pumps need to be correspondingly arranged, so that the volume and the weight of the integrated oil pump are greatly increased, the structural cost is increased, and the structural layout is not convenient.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an oil-well pump structure, integrated oil pump structure and motorcycle can effectively reduce the volume and the quality of integrated oil pump, and then reduces the cost of integrated oil pump.

In order to achieve the above object, the utility model adopts the following technical scheme:

the first aspect provides an oil well pump structure for returning oil to an oil pan, the oil well pump structure comprises an oil pump shell, a first rotating piece and a second rotating piece, wherein the first rotating piece and the second rotating piece are rotatably connected in the oil pump shell and can rotate relatively to drive oil to flow;

a first oil inlet arranged close to the first rotating part, a second oil inlet arranged close to the second rotating part and an oil outlet arranged far away from the first oil inlet and the second oil inlet are formed in the oil pump shell, a first oil return channel is formed between the first rotating part and the inner wall of the oil pump shell, and a second oil return channel is formed between the second rotating part and the inner wall of the oil pump shell;

the first rotating part and the second rotating part can rotate relatively to drive oil entering from the first oil inlet to flow to the oil outlet through the first oil return passage and drive oil entering from the second oil inlet to flow to the oil outlet through the second oil return passage.

With reference to the first aspect, in one possible implementation manner, the first rotating member is a first gear, and the second rotating member is a second gear externally meshed with the first gear.

With reference to the first aspect, in a possible implementation manner, the first rotating member includes a first main shaft and a plurality of first interference pieces distributed on the periphery of the first main shaft;

the second rotating part comprises a second main shaft arranged in parallel to the first main shaft and a plurality of second disturbance pieces distributed on the periphery of the second main shaft;

when the first main shaft and the second main shaft rotate relatively, the first disturbance pieces can stretch into the gaps of the two adjacent second disturbance pieces, and the second disturbance pieces can stretch into the gaps of the two adjacent first disturbance pieces.

With reference to the first aspect, in a possible implementation manner, the first oil inlet and the second oil inlet are respectively close to one sides of the first rotating member and the second rotating member which are gradually separated when the first rotating member and the second rotating member are meshed to rotate; the oil outlet is close to the side which is gradually close to the first rotating member and the second rotating member when the first rotating member and the second rotating member are meshed to rotate.

With reference to the first aspect, in some embodiments, the first oil return passage and the second oil return passage are respectively located on a side of the first rotating member and a side of the second rotating member facing away from each other.

With reference to the first aspect, in one possible implementation, the oil outlet is located on a symmetry plane of the first rotating member and the second rotating member.

With reference to the first aspect, in one possible implementation manner, the oil pump case is provided inside with a first oil inlet cavity arranged close to the first oil inlet, a second oil inlet cavity arranged close to the second oil inlet, and an oil outlet cavity arranged close to the oil outlet, the first oil inlet cavity and the oil outlet cavity are communicated through a first oil return channel, and the second oil inlet cavity and the oil outlet cavity are communicated through a second oil return channel.

With reference to the first aspect, in some embodiments, the oil outlet chamber extends to a side away from the first oil return passage and the second oil return passage, and the oil outlet chamber gradually converges from a side close to the first rotating member and the second rotating member to a side close to the oil outlet.

The second aspect, the utility model also provides an integrated oil pump structure, integrated oil pump structure includes lubricating-oil pump, oil pan and oil-well pump structure, and lubricating-oil pump's oil inlet links to each other with the oil pan, and the oil-out needs the oil piece with the engine to link to each other, and oil-well pump structure's oil inlet needs the oil piece with the engine to link to each other, and the oil-out links to each other with the oil pan.

The third aspect, the utility model also provides a motorcycle, motorcycle include the integrated oil pump structure.

The shown scheme of this application embodiment, compared with the prior art, the oil-well pump structure that this application embodiment provided, under the relative pivoted effect of first rotation piece and second rotation piece, fluid that first oil inlet got into is led to delivery opening department through first oil return duct, fluid that the second oil inlet got into is led to the oil-out through second oil return duct, utilize first oil return duct and the individual oil return path of second oil return duct in the oil pump case to carry out the oil return, can effectively improve the oil return efficiency of fluid, be convenient for reduce oil-well pump structure's the quantity that sets up, and then reduced the volume and the weight of component, the lightweight has been realized.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.

Fig. 1 is a schematic structural diagram of an oil well pump structure provided by an embodiment of the present invention;

fig. 2 is a schematic structural diagram of another embodiment of the first rotating member and the second rotating member according to the embodiment of the present invention;

fig. 3 is a schematic view of a connection relationship when the integrated oil pump provided by the embodiment of the present invention is used;

fig. 4 is a schematic view of the connection relationship of the prior integrated oil pump in use.

Wherein, in the figures, the respective reference numerals:

1. an oil pump housing; 11. a first oil inlet; 12. a second oil inlet; 13. an oil outlet; 14. an oil outlet cavity; 15. a first oil inlet chamber; 16. a second oil inlet chamber; 2. a first rotating member; 21. a first disturbance plate; 22. a first main shaft; 3. a second rotating member; 31. a second disturbance plate; 32. a second main shaft; 4. a first oil return passage; 5. and a second oil return passage.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or be indirectly on the other element. It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or several of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to 4, the oil pump structure, the integrated oil pump structure and the motorcycle provided by the present invention will now be described. The oil well pump structure is used for returning oil to an oil pan and comprises an oil pump shell 1, a first rotating piece 2 and a second rotating piece 3 which are rotatably connected in the oil pump shell 1, and the first rotating piece 2 and the second rotating piece 3 can rotate relatively to drive oil to flow;

a first oil inlet 11 arranged close to the first rotating part 2, a second oil inlet 12 arranged close to the second rotating part 3 and an oil outlet 13 arranged far away from the first oil inlet 11 and the second oil inlet 12 are arranged on the oil pump shell 1, a first oil return channel 4 is formed between the first rotating part 2 and the inner wall of the oil pump shell 1, and a second oil return channel 5 is formed between the second rotating part 3 and the inner wall of the oil pump shell 1;

the first rotating member 2 and the second rotating member 3 can rotate relatively to drive oil entering from the first oil inlet 11 to flow to the oil outlet 13 through the first oil return passage 4, and drive oil entering from the second oil inlet 12 to flow to the oil outlet 13 through the second oil return passage 5.

The oil-well pump structure that this embodiment provided, compared with the prior art, the oil-well pump structure that this embodiment provided, under the effect of the relative rotation of first rotation piece 2 and second rotation piece 3, the fluid that 11 first oil inlets got into leads to oil-out 13 department through first oil return duct 4, the fluid that 12 second oil inlets got into leads to oil-out 13 through second oil return duct 5, utilize two oil return paths of 4 first oil return ducts and 5 second oil return ducts in the oil pump case 1 to carry out the oil return, can effectively improve the oil return efficiency of fluid, be convenient for reduce the quantity that sets up of oil-well pump structure, and then reduced the volume and the weight of component, the lightweight has been realized.

In the prior art, referring to fig. 4, there are a plurality of parts in the engine of a motorcycle which need to be lubricated by lubricating oil, collectively referred to as engine oil requiring parts. The lubricating oil is stored in the oil pan, is pumped to the position of each oil requirement of the engine through the lubricating oil pump, and then is sent back to the oil pan through the rotor pump. Because a rotor pump can only establish a vacuum area, so only can correspond to an oil duct, if correspond two oil ducts, the rotor pump can preferentially pump the less oil return way of flow resistance, leads to pumping more, can't play the oil pumping effect. Therefore, a plurality of oil return flow passages corresponding to a plurality of oil-requiring members of the engine need to be provided with a corresponding number of rotor pumps, so that the oil return efficiency is ensured. This requires the integration of multiple rotor pumps on the lubricant pump, but the above greatly increases the volume occupied by the structure, also increases the weight of the integrated lubricant pump, and is not conducive to the realization of a lightweight design.

In this embodiment, referring to fig. 3, a first oil return passage 4 is formed between the first rotating member 2 and the inner wall of the oil pump case 1, a second oil return passage 5 is formed between the second rotating member 3 and the inner wall of the oil pump case 1, and oil can flow back through the two oil return passages of the first oil return passage 4 and the second oil return passage 5, so that oil required by two engines can be returned simultaneously, the oil return efficiency is effectively improved, and the space occupation caused by the arrangement of the two oil pump cases 1 is avoided.

Specifically, the first rotating part 2 and the second rotating part 3 adopt the same structure capable of rotating relatively, a first oil return channel 4 and a second oil return channel 5 are respectively formed on one sides of the first rotating part and the second rotating part which are deviated from each other, and then oil is guided to one side of the oil outlet 13 simultaneously.

The main shafts of the first rotating part 2 and the second rotating part 3 are arranged in parallel, blades or tooth shapes which can play a role of stirring oil are arranged on the peripheries of the first rotating part 2 and the second rotating part 3, and the flowing direction of the oil is guided by the relative rotation of the first rotating part 2 and the second rotating part 3, so that the oil has the flowing trend from the first oil inlet 11 or the second oil inlet 12 to one side of the oil outlet 13, and the effect of effective oil return is finally realized.

The first rotating member 2 and the second rotating member 3 can respectively adopt externally meshed gears, and the two gears respectively have externally meshed tooth shapes, so that a vacuum area is formed on the oil inlet sides of the two gears, and oil has a flowing trend from the first oil inlet 11 or the second oil inlet 12 to the oil outlet 13.

In some possible implementations, the first rotating member 2 and the second rotating member 3 of the above-described features are structured as shown in fig. 1. Referring to fig. 1, the first rotating member 2 is a first gear, and the second rotating member 3 is a second gear externally engaged with the first gear.

In this embodiment, the first gear and the second gear are engaged to respectively drive the oil to flow from the first oil return passage 4 and the second oil return passage 5 to the oil outlet 13. The first gear and the second gear are a pair of gears with the same tooth number, the first gear and the second gear are respectively fixed on the driving shaft and the driven shaft, the driving shaft is driven by the motor to rotate, and the driven shaft is driven by the driving shaft to rotate. The widths of the first gear and the second gear are close to the width of the inner cavity of the oil pump shell 1, and the cavity inside the oil pump shell 1 can be divided into an oil suction cavity close to the first oil inlet 11 and the second oil inlet 12 and an oil pressing cavity close to the oil outlet 13.

Specifically, the oil suction cavity may be a cavity communicated with both the first oil inlet 11 and the second oil inlet 12, or may be two cavities respectively communicated with the first oil inlet 11 and the second oil inlet 12, which may both achieve the effect of sucking oil from the first oil inlet 11 and the second oil inlet 12 into the oil pump case 1, and is not limited herein.

As shown in fig. 1, when the first gear and the second gear rotate in the direction of the arrow shown in the figure, the first gear and the second gear are gradually disengaged from each other at a side (i.e. a side of the oil suction cavity) close to the first oil inlet 11 and the second oil inlet 12 in the pump housing 1, so that the sealed volume is increased to form a partial vacuum area, and the oil in the oil requiring part of the engine enters the pump housing 1 under the action of the external atmospheric pressure. Along with the rotation of the first gear and the second gear, the sucked oil is respectively guided to one side close to the oil outlet 13 (namely, enters the oil pressing cavity) through the first oil return channel 4 and the second oil return channel 5, the gear teeth of the first gear and the second gear are gradually meshed at the position, so that the sealed volume is gradually reduced, the oil between the gear teeth at the meshing part of the first gear and the second gear is extruded, and an oil pressing process is formed, so that the oil is smoothly discharged from the oil outlet 13.

As a parallel embodiment, the first rotor 2 and the second rotor 3 are configured as shown in fig. 2. Referring to fig. 2, the first rotating member 2 includes a first main shaft 22 and a plurality of first interference pieces 21 distributed on the periphery of the first main shaft 22;

the second rotating part 3 comprises a second main shaft 32 arranged in parallel with the first main shaft 22 and a plurality of second disturbance pieces 31 distributed on the periphery of the second main shaft 32;

when the first main shaft 22 and the second main shaft 32 rotate relatively, the first disturbance piece 21 can extend into a gap between two adjacent second disturbance pieces 31, and the second disturbance pieces 31 can extend into a gap between two adjacent first disturbance pieces 21.

In this embodiment, the first disturbing piece 21 and the second disturbing piece 31 can alternately disturb oil in the relative rotation process of the first main shaft 22 and the second main shaft 32, so that the oil tends to flow toward the oil outlet 13 in the first oil return passage 4 or the second oil return passage 5, thereby achieving the effect of pushing the oil to flow toward the oil outlet 13 from the first oil inlet 11 or the second oil inlet 12. This structure is different with the mode that adopts first gear and second gear to carry out fluid drive, nevertheless can also play the water conservancy diversion effect to fluid, and then improves oil return efficiency.

In some embodiments, the first oil inlet 11 and the second oil inlet 12 can adopt the structure shown in fig. 1. Referring to fig. 1, the first oil inlet 11 and the second oil inlet 12 are respectively close to the sides which are gradually separated when the first rotating member 2 and the second rotating member 3 are meshed to rotate; the oil outlet port 13 is located near the side which is gradually closer when the first rotating member 2 and the second rotating member 3 are rotated in mesh.

Referring to fig. 1, in order to realize the directional pushing effect of the first rotating member 2 and the second rotating member 3 on the oil, the first oil inlet 11 is arranged on one side of the first rotating member 2 which is gradually separated from the second rotating member 3, and the oil is pushed to the oil outlet 13 under the clockwise rotation effect of the first rotating member 2. Meanwhile, the second oil inlet 12 is arranged on one side of the second rotating member 3 gradually close to the first rotating member 2, and oil is pushed to the oil outlet 13 under the counterclockwise rotating action of the second rotating member 3.

The rotating speeds of the first rotating part 2 and the second rotating part 3 are equal, so that the flowing speeds of oil in the first oil return passage 4 and the second oil return passage 5 are the same, the effect that the first oil inlet 11 and the second oil inlet 12 suck the oil in equal quantity is realized, and the oil return efficiency is improved.

On the basis of the above structure, the first oil return passage 4 and the second oil return passage 5 are respectively located on the sides of the first rotating member 2 and the second rotating member 3 which are away from each other. The position selection of first oil inlet 11 should make fluid have certain length of flowing through in first oil return way 4 or second oil return way 5, avoid the promotion resistance that causes because of fluid walking route overlength again, so should rotate first oil inlet 11 and second and keep the certain distance between the piece 3, also namely set up and rotate the piece 2 one side far away from the second of first rotation piece 3, under the prerequisite of guaranteeing to fluid impetus, reduce the promotion resistance of fluid, realize the directional flow of fluid, reach the purpose that promotes the oil return. Similarly, the arrangement mode of the second oil inlet 12 is similar to the arrangement principle of the first oil inlet 11, and is not described herein again.

On the basis of the above, the characteristic oil outlet 13 can adopt the structure as shown in fig. 1. Referring to fig. 1, the oil outlet 13 is located on the symmetrical plane of the first rotating member 2 and the second rotating member 3, and the length of the oil in the first oil return channel 4 from the oil outlet 13 is equal to the length of the oil in the second oil return channel 5 from the oil outlet 13, so that the oil in the first oil return channel 4 and the oil in the second oil return channel 5 have the same outflow speed, and the first oil return channel 4 and the second oil return channel 5 have the same oil return effect.

In some possible implementations, the oil pump housing 1 with the above features is structured as shown in fig. 1. Referring to fig. 1, the interior of the oil pump housing 1 has a first oil inlet chamber 15 disposed near the first oil inlet 11, a second oil inlet chamber 16 disposed near the second oil inlet 12, and an oil outlet chamber 14 disposed near the oil outlet 13, the first oil inlet chamber 15 and the oil outlet chamber 14 are communicated through a first oil return passage 4, and the second oil inlet chamber 16 and the oil outlet chamber 14 are communicated through a second oil return passage 5.

On the basis of utilizing the mutual external meshing of the first gear and the second gear, an oil outlet cavity 14 is formed on one side of an oil outlet 13, a first oil inlet cavity 15 is formed on one side of a first oil inlet 11, a second oil inlet cavity 16 is formed on one side of a second oil inlet 12, the first oil inlet cavity 15 and the second oil inlet cavity 16 respectively form a vacuum area when the first gear and the second gear rotate relatively, an oil requiring member of the engine enters the first oil inlet cavity 15 and the second oil inlet cavity 16 through the first oil inlet 11 and the second oil inlet 12 respectively under the pushing action of the external atmospheric pressure and flows to the position of the oil outlet 13 respectively, so that the effective guiding-out of oil is realized, and the effect of accelerating oil return is achieved.

In some embodiments, the above features feature that the oil chamber 14 may adopt the structure shown in fig. 1. Referring to fig. 1, the oil outlet chamber 14 extends to a side away from the first oil return passage 4 and the second oil return passage 5, and the oil outlet chamber 14 gradually converges from a side close to the first rotating member 2 and the second rotating member 3 to a side close to the oil outlet 13.

The oil outlet cavity 14 can collect the oil discharged from the first oil return channel 4 and the second oil return channel 5 in a centralized manner, in order to avoid the phenomenon that the two oil streams generate opposite impact and disturbance, the oil outlet cavity 14 is stretched to one side far away from the first rotating part 2 and the second rotating part 3, and a gradually furled structure is adopted, so that the two oil streams are effectively polymerized, a reserved cavity with a certain volume is provided for the subsequent outward supply of the oil streams, and the smooth backflow of the oil streams is ensured.

Based on the same invention concept, the embodiment of the application also provides an integrated oil pump structure, which comprises a lubricating oil pump, an oil pan and an oil well pump structure, wherein an oil inlet of the lubricating oil pump is connected with the oil pan, an oil outlet 13 of the lubricating oil pump is connected with an oil requiring piece of an engine, an oil inlet of the oil well pump structure is connected with the oil requiring piece of the engine, and the oil outlet 13 of the oil well pump structure is connected with the oil pan.

According to the integrated oil pump structure, oil is supplied to the oil requiring piece of the engine through the lubricating oil pump, oil in the oil requiring piece of the engine is sent back to the oil pan through the oil well pump structure with the first oil return channel 4 and the second oil return channel 5, so that the subsequent lubricating oil pump can continuously supply the oil to the oil requiring piece of the engine, and effective circulation of the oil is realized. The lubricating oil pump adopts a quantitative rotor pump, realizes the quantitative and stable supply of oil, and can effectively meet the lubricating requirement of oil-requiring parts of an engine.

Based on the same invention concept, the embodiment of the application also provides a motorcycle which comprises an integrated oil pump structure, and an engine of the motorcycle can supply and return lubricating oil through the integrated oil pump structure, so that the occupied space of the integrated oil pump structure is conveniently compressed, the whole weight of the structure is reduced, and the light-weight design of the motorcycle is further realized.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The oil well pump structure is used for returning oil to an oil pan and is characterized by comprising an oil pump shell, a first rotating piece and a second rotating piece, wherein the first rotating piece and the second rotating piece are rotatably connected in the oil pump shell and can rotate relatively to drive oil to flow;

a first oil inlet arranged close to the first rotating part, a second oil inlet arranged close to the second rotating part and an oil outlet arranged far away from the first oil inlet and the second oil inlet are formed in the oil pump shell, a first oil return channel is formed between the first rotating part and the inner wall of the oil pump shell, and a second oil return channel is formed between the second rotating part and the inner wall of the oil pump shell;

the first rotating part and the second rotating part can rotate relatively to drive oil entering from the first oil inlet to flow to the oil outlet through the first oil return passage and drive oil entering from the second oil inlet to flow to the oil outlet through the second oil return passage.

2. The pump structure of claim 1, wherein the first rotating member is a first gear and the second rotating member is a second gear that is externally engaged with the first gear.

3. The structure of the oil well pump as claimed in claim 1, wherein the first rotating member includes a first main shaft and a plurality of first interference pieces distributed on the periphery of the first main shaft;

the second rotating part comprises a second main shaft arranged in parallel to the first main shaft and a plurality of second disturbance pieces distributed on the periphery of the second main shaft;

when the first main shaft and the second main shaft rotate relatively, the first disturbance pieces can stretch into the gaps of the two adjacent second disturbance pieces, and the second disturbance pieces can stretch into the gaps of the two adjacent first disturbance pieces.

4. The pump structure as claimed in any one of claims 1 to 3, wherein the first oil inlet and the second oil inlet are respectively adjacent to sides which are gradually separated when the first rotating member and the second rotating member are meshed to rotate; the oil outlet is close to one side of the first rotating piece and the second rotating piece which are gradually close to each other when the first rotating piece and the second rotating piece are meshed and rotate.

5. The pump structure of claim 4, wherein the first oil return passage and the second oil return passage are located on a side of the first rotating member and a side of the second rotating member facing away from each other.

6. The pump structure as claimed in any one of claims 1 to 3, wherein the oil outlet is located on a plane of symmetry of the first and second rotors.

7. The structure of an oil well pump according to any one of claims 1 to 3, wherein the interior of the pump housing has a first oil inlet chamber disposed near the first oil inlet, a second oil inlet chamber disposed near the second oil inlet, and an oil outlet chamber disposed near the oil outlet, the first oil inlet chamber and the oil outlet chamber are communicated through the first oil return passage, and the second oil inlet chamber and the oil outlet chamber are communicated through the second oil return passage.

8. The pump structure as claimed in claim 7, wherein the oil outlet chamber extends to a side away from the first and second oil return passages, and the oil outlet chamber gradually converges from a side close to the first and second rotating members to a side close to the oil outlet.

9. The integrated oil pump structure is characterized by comprising a lubricating oil pump, an oil pan and the oil well pump structure as claimed in any one of claims 1 to 8, wherein an oil inlet of the lubricating oil pump is connected with the oil pan, an oil outlet of the lubricating oil pump is connected with an oil requiring piece of an engine, an oil inlet of the oil well pump structure is connected with the oil requiring piece of the engine, and the oil outlet of the oil well pump structure is connected with the oil pan.

10. Motorcycle, characterized in that it comprises an integrated oil pump structure according to claim 9.

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