CN217354736U - Oil pump of gearbox - Google Patents

Abstract

The utility model provides a gearbox oil pump relates to the oil pump field. The transmission oil pump includes: a pump body formed with a recess; the oil control assembly is arranged in the groove; one end of the oil control assembly, which is close to the bottom of the groove, is connected with an oil distribution disc; and the sealing part is positioned between the oil distribution disc and the pump body, and comprises an elastic group jointed with the oil distribution disc and the pump body. An elastic piece group is arranged between the oil distribution disc and the pump body; the sealing performance of the oil pump can be greatly improved, and the comprehensive production cost of enterprises can be reduced.

Description

Oil pump of gearbox

Technical Field

The application relates to the field of oil pumps, in particular to a gearbox oil pump.

Background

The transmission oil pump is the foundation for the operation of the whole hydraulic control system, namely the foundation for the operation of an automobile transmission, and is used for providing a certain pressure and flow of hydraulic oil for elements such as a hydraulic torque converter, a valve body and the like so as to ensure the good lubrication of the transmission.

The existing gearbox oil pump ensures the sealing performance of the oil distribution disc and the pump body by arranging a sealing ring and a conical spring between the oil distribution disc and the pump body, but the sealing effect can be realized only by independently connecting the oil distribution disc and the pump body due to the non-matching performance of the structures of the oil distribution disc and the pump body, so that the pump body and the oil distribution disc are extremely difficult to manufacture, namely, the precision, the structure, the size and the like of the pump body and the oil distribution disc have extremely high manufacturing requirements, and the production cost of enterprises is overhigh; for the above reasons, if the pump body, the oil distribution pan, or the seal ring is worn during use, the sealing performance of the oil pump is lowered. In addition, the self structure of components such as rotating shaft, rotor in the existing gearbox oil pump can not guarantee the leakproofness of oil pump completely yet for hydraulic oil always leaks.

SUMMERY OF THE UTILITY MODEL

In view of this, an object of the present application is to provide a transmission oil pump to solve the problems of high manufacturing cost and poor sealing performance of the conventional transmission oil pump.

According to the above object, the utility model provides a transmission oil pump, wherein, transmission oil pump includes:

a pump body formed with a recess;

the oil control assembly is arranged in the groove; one end of the oil control assembly, which is close to the bottom of the groove, is connected with an oil distribution disc; and

and the sealing part is positioned between the oil distribution disc and the pump body and comprises an elastic group which is abutted with the oil distribution disc and the pump body.

Preferably, the elastic member group comprises a first sub-elastic member and a second sub-elastic member, and the first sub-elastic member and the second sub-elastic member are sequentially connected to one end of the oil distribution pan away from the oil control assembly to form a sealed end of the oil distribution pan.

Preferably, the oil distribution disc is of a disc-shaped structure with an axis, a sealing end of the oil distribution disc is sequentially formed with a step part at least comprising a first sub-step and a second sub-step along a direction departing from the oil control assembly, and the axis of the step part is coincident with the axis of the oil distribution disc.

Preferably, the first sub-elastic member and the second sub-elastic member are respectively sleeved on the first sub-step and the second sub-step, and through holes matched with the first sub-step and the second sub-step are respectively formed in the centers of the first sub-elastic member and the second sub-elastic member.

Preferably, the first sub-elastic member is a conical spring, and a large-diameter end of the conical spring is attached to a sealing end of the oil distribution disc.

Preferably, the second sub-elastic member is disc-like; the center of one end, facing the conical spring, of the second sub-elastic piece is provided with a concave part along the direction departing from the conical spring, and the concave part is matched with the small-diameter end of the conical spring.

Preferably, the periphery of the second sub-elastic member is surrounded by a plurality of flat elastic pieces and a plurality of bent elastic pieces, and the plurality of flat elastic pieces and the plurality of bent elastic pieces are alternately arranged at intervals; the flat elastic sheet is attached to the sealing end of the oil distribution disc, and the bent elastic sheet is attached to the bottom of the groove of the pump body.

Preferably, the oil control assembly comprises a rotating shaft, one end of the rotating shaft, which is close to the bottom of the groove, is connected with the oil distribution disc to form an oil control end of the oil distribution disc, and the oil control end and the sealing end are opposite to each other; the axis of the rotating shaft is superposed with the axis of the oil distribution disc.

Preferably, a connecting hole matched with the rotating shaft is formed in the oil control end of the oil distribution disc, and the depth of the connecting hole is smaller than the distance between the oil control end of the oil distribution disc and one end, far away from the rotating shaft, of the step part on the sealing end.

Preferably, the oil control assembly further comprises a rotor sleeved on the rotating shaft, a stator sleeved on the periphery of the rotor, and a plurality of blades located between the stator and the rotor and arranged around the periphery of the rotor;

the periphery of the rotor is circumferentially provided with a plurality of U-shaped concave parts which are opened in the direction away from the center of the rotor; the recess corresponds to the vane such that the vane can reciprocate within the recess.

According to the gearbox oil pump of the utility model, the oil control component arranged in the pump body can realize the oil pressing and oil absorption of the oil pump; through set up the elastic component group between the pump body and join in marriage the food tray, can make this elastic component group all the time with the pump body with join in marriage the food tray laminating in order to realize sealed, the elastic component group promptly with the pump body of different precision, structure and size with join in marriage the food tray homoenergetic and well cooperate to can ignore the negative effects that cause sealed effect because of factors such as pump body wearing and tearing, and then also can improve the leakproofness of oil pump when making enterprise's manufacturing cost reduce by a wide margin.

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 is a cross-sectional view of a transmission oil pump according to an embodiment of the present invention;

fig. 2 is a schematic view of an oil control assembly according to an embodiment of the present invention;

fig. 3 is a schematic view of a rotor according to an embodiment of the invention;

fig. 4 is a schematic view of a set of elastic members according to an embodiment of the present invention;

FIG. 5 is a schematic view of a rotor in a prior art transmission oil pump.

Icon: 1-a pump body; 10-pump cover; 20-a bearing; 21-shaft sleeve; 22-a rotating shaft; 23-a stator; 24-a rotor; 240-vane slots; 25-a blade; 3-oil distribution disc; 30-a first sub-step; 31-a second sub-step; 32-sealed end; 320-projection; 33-oil control end; 41-a first sub-spring; 42-a second sub-elastic member; 420-flat spring plate; 421-bending spring plate; 422-through holes; 43-sealing ring.

Detailed Description

The following detailed description is provided to assist the reader in obtaining a thorough understanding of the methods, devices, and/or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and/or systems described herein will be apparent to those skilled in the art upon review of the disclosure of the present application. For example, the order of operations described herein is merely an example, which is not limited to the order set forth herein, but rather, variations may be made in addition to operations which must occur in a particular order, which will be apparent upon understanding the disclosure of the present application. Moreover, descriptions of features known in the art may be omitted for clarity and conciseness.

The features described herein may be embodied in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many possible ways to implement the methods, devices, and/or systems described herein that will be apparent after understanding the disclosure of the present application.

Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on," "connected to," coupled to, "over," or "overlying" another element, it may be directly "on," "connected to," coupled to, "over," or "overlying" the other element, or one or more other elements may be present therebetween. In contrast, when an element is referred to as being "directly on," "directly connected to," directly coupled to, "directly over" or "directly overlying" another element, there may be no intervening elements present.

As used herein, the term "and/or" includes any one of the associated listed items and any combination of any two or more of the items.

Although terms such as "first", "second", and "third" may be used herein to describe various elements, components, regions, layers or sections, these elements, components, regions, layers or sections should not be limited by these terms. Rather, these terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first member, component, region, layer or section discussed in the examples described herein could be termed a second member, component, region, layer or section without departing from the teachings of the examples.

For ease of description, spatial relationship terms such as "above … …," "upper," "below … …," and "lower" may be used herein to describe one element's relationship to another element as illustrated in the figures. Such spatial relationship terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "upper" relative to other elements would then be oriented "below" or "lower" relative to the other elements. Thus, the term "above … …" includes both an orientation of "above … …" and "below … …" depending on the spatial orientation of the device. The device may also be otherwise oriented (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. The singular forms also are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" specify the presence of stated features, quantities, operations, elements, components, and/or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and/or combinations thereof.

Variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, may be expected. Thus, the examples described herein are not limited to the particular shapes shown in the drawings, but include changes in shape that occur during manufacturing.

The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. Further, while the examples described herein have a variety of configurations, other configurations are possible, as will be apparent after understanding the disclosure of the present application.

As shown in fig. 1, the transmission oil pump of the present embodiment includes: a pump body 1; the oil control assembly is arranged in the pump body 1 and is used for controlling the working state of hydraulic oil; and a seal portion for ensuring the sealability of the pump body 1. Hereinafter, the specific structure of the above-described components of the transmission oil pump according to the present invention will be described in detail.

In the present embodiment, as shown in fig. 1, the pump body 1 has a cylindrical-like structure having an axis, and a groove opened to the outside of the pump body 1 is formed at one end thereof for disposing a member such as an oil distribution pan 3 and an oil control assembly described below. Similarly, the groove is cylindrical-like and is arranged in the center of the end of the pump body 1, that is, the axis of the groove coincides with the axis of the pump body 1, so that the inner wall of the groove and the oil control assembly and the like can have higher adaptability, and the layout of each component of the oil pump is more reasonable. Further, in the present embodiment, as shown in fig. 1, in order to ensure the sealing performance when the oil pump is operated, a pump cover 10 adapted to an end portion of the pump body 1 is further provided at the end where the groove is formed, and a sealing member such as a lip seal or the like is provided between the pump body 1 and the pump cover 10.

It should be noted that the depth, diameter, etc. of the groove are not particularly limited, and are determined according to the actual situation, such as the size of the rotor 24 in the oil control assembly described below. Further, the shape of the pump body 1 is also not limited thereto, and it may be provided, for example, in a rectangular parallelepiped-like shape as long as it is formed with the above-described cylindrical recess that facilitates the installation and operation of the oil control assembly. The size and the like of the pump body 1 are not limited, and are determined according to the actual situation, for example, the size of the place where the pump body is installed.

In addition, in the present embodiment, as shown in fig. 1, the oil control assembly includes a rotating shaft 22, and a stator 23, a rotor 24 and a vane 25 which are sleeved on the rotating shaft 22. The rotation shaft 22 is inserted into the groove and is disposed in a direction in which the groove extends, i.e., an axis of the rotation shaft 22 coincides with an axis of the groove, to ensure centering of the oil pump in the groove, thereby more precisely controlling a flow rate and a flow rate when the pressure oil is sucked or pressed out. In addition, a shaft sleeve 21, a bearing 20 and other system parts are connected to one end of the rotating shaft 22 away from the bottom of the groove, and the shaft sleeve 21 is connected with the pump body 1, so that the rotating shaft 22 and the pump body 1 can be fixed, and the stability of the rotating shaft 22 during rotation can be ensured.

In addition, in the present embodiment, as shown in fig. 2, the rotor 24 is sleeved on the rotating shaft 22 so as to be capable of rotating synchronously with the rotating shaft 22, the stator 23 is sleeved on the outer circumference of the rotor 24, and a plurality of blades 25 facing the center of the rotor 24 and having the same extending direction as the central axis of the rotor 24 are attached to the inner surface of the stator 23; correspondingly, a plurality of vane grooves 240 for inserting the vanes 25 are provided around the outer circumference of the rotor 24, and the vane grooves 240 extend in the same direction as the central axis of the rotor 24. Specifically, a plurality of sealed spaces are formed between the vane 25, the inner surface of the stator 23, the outer surface of the rotor 24, the pump cover 10 and the oil distribution disc 3 described below, and when the rotor 24 is driven by the rotating shaft 22 to rotate synchronously, the vane 25 can move in the vane groove 240 in the radial direction of the rotor 24 under the action of centrifugal force and flowing pressure oil, so that the area of the sealed space can be changed by the reciprocating motion of the vane 25, and the sealed space is an oil suction area when the area of the sealed space is increased, and is an oil pressing area when the area of the sealed space is decreased. Thus, the suction and the extrusion of the pressure oil can be completed under the combined action of the stator 23, the vane 25, the rotor 24 and the rotating shaft 22.

In the present embodiment, the stator 23 and the rotor 24 are concentrically arranged, or may be eccentrically arranged, in consideration of the type and use of the oil pump. Further, as shown in fig. 2, the rotor 24 is provided in a disk structure, and a through hole for connection with the rotation shaft 22 is formed at the center thereof; the stator 23 is formed in a disk-like shape so as to be connected to the inner wall of the groove, and a hollow portion for connecting with the rotating shaft 22 is formed at the center thereof, and in order to achieve the above function, the hollow portion is formed in an elliptical-like shape having different lengths and widths, and the width of the hollow portion is equal to the outer diameter of the rotor 24. However, the size of the stator 23 and the hollow portion thereon, the size of the rotor 24, the number and length of the blades 25, etc. are not particularly limited, and should be determined according to the actual situation, such as the flow rate of the oil pump, etc., as long as the components in the oil control assembly can cooperate with each other to control the pressure oil.

It should be further noted that, as shown in fig. 3 to 4, compared to the vane slot 240 provided on the rotor 24 in the prior art, the vane slot 240 on the rotor 24 in the present embodiment eliminates the circular slot structure (fig. 4) at the end portion thereof, and instead, the vane slot 240 is provided in a complete and smooth U shape, so that when the vane 25 is completely inserted into the vane slot 240, the vane slot and the vane slot are completely attached to each other, thereby greatly reducing the possibility of leakage of the pressure oil, and further improving the sealing performance of the oil control assembly during operation and the accuracy of the oil control assembly in controlling the pressure oil. Further, the size, number, and the like of the vane grooves 240 are not particularly limited as long as they correspond to the vanes 25, but they may be through grooves that can penetrate both end surfaces of the rotor 24, thereby facilitating the attachment of the vanes 25 to the pump cover 10 and the oil distribution pan 3 to form the sealed space.

In the present embodiment, as shown in fig. 1, an oil distribution disc 3 is connected to one end of the rotating shaft 22 near the bottom of the groove of the pump body 1, and is attached to the rotor 24 and the vanes 25, so as to be capable of cooperating with the oil control assembly to distribute the pressure oil to different oil paths. The oil distribution disc 3 is a disc-shaped structure with an axis, and a connecting hole is formed at the center of one end, attached to the rotor 24, of the oil distribution disc 3, namely the oil control end 33 of the oil distribution disc 3, so that the oil distribution disc 3 is sleeved on the rotating shaft 22. The hole diameter of the connection hole should be adapted to the outer diameter of the rotating shaft 22, but the depth is not particularly limited as long as the oil control end 33 of the oil distribution disc 3 can be attached to the rotor 24. It should be noted that the connection hole is provided in the center of the oil distribution pan 3 so that the axis of the oil distribution pan 3 coincides with the axis of the rotating shaft 22, which is an optimal choice based on the consideration of the rationality of the oil pump structure.

Further, a stepped portion is formed at the center of the seal end 32 of the oil distribution pan 3, which is an end of the oil distribution pan 3 opposite to the oil control end 33, for connecting the following elastic member group. The step portion can facilitate installation of the elastic member set, reduce the thickness of the oil distribution disc 3, namely the distance between the oil control end 33 and the sealing end 32, and enable the depth of the connecting hole to have a larger adjusting range, so that the oil distribution disc 3 can be attached to the rotor 24, and the rotating shaft 22 cannot penetrate out of the oil distribution disc 3. That is to say, no matter where the rotor 24 is located on the rotating shaft 22, and no matter what the thickness of the oil distribution disc 3 is, the step portion can make the depth of the connecting hole always smaller than the distance between the oil control end 33 of the oil distribution disc 3 and the top end (the upper end in fig. 1) of the step portion, that is, the oil distribution disc 3 itself can play a role of sealing the oil control assembly, and with such an arrangement, compared with the arrangement mode in which the rotating shaft 22 penetrates out of the oil distribution disc 3 in the prior art, the sealing performance between the oil control end 33 of the oil distribution disc 3 and the oil control assembly can be greatly improved.

In the present embodiment, as shown in fig. 1, an elastic member group is fitted over the above-described stepped portion, which is used as a seal between the oil distribution pan 3 and the pump body 1. Specifically, the stepped portion includes a first sub-step 30 and a second sub-step 31 having the same axis, and the first sub-step 30 is formed inside the large radial surface of the sealing end 32 of the oil distribution pan 3, the second sub-step 31 protruding toward the bottom side of the groove is formed on the first sub-step 30, and a protrusion 320 described below is formed inside the large radial surface of the sealing end 32 of the oil distribution pan 3. The elastic member set includes a first sub-elastic member 41 and a second sub-elastic member 42 respectively fitted around the first sub-step 30 and the second sub-step 31. Correspondingly, through holes are formed at the centers of the first and second sub-elastic members 41 and 31 to be fitted with the first and second sub-steps 30 and 31, respectively, so that both can be stably connected with the stepped portion. The shape, outer diameter, and the like of the step portion are not particularly required, and the step portion may be formed in a cylindrical shape or a rectangular parallelepiped shape, for example, as long as the installation of the elastic member group is not affected to ensure the sealing property between the oil distribution pan 3 and the pump body 1.

In the present embodiment, as shown in fig. 1, the first sub-elastic member 41 is a conical spring, and a large-diameter end thereof is attached to the sealing end 32 of the oil distribution pan 3, so that the axial force of the flow rate of the pressure oil can be adjusted to reduce the axial thrust of the axial gap. The second sub-elastic member 42 has a disc-shaped structure, and when it is sleeved on the second sub-step 31, a concave portion is formed in the center of the end portion facing the conical spring in a direction away from the conical spring, and the concave portion is used for accommodating the conical spring, i.e. the concave portion is matched with the small-diameter end of the conical spring. With such an arrangement, the connection between the first sub-elastic member 41 and the second sub-elastic member 42 is tighter, and the structure of the oil pump is also more compact, so that the oil pump has better sealing performance.

Further, as shown in fig. 1, in the present embodiment, the outer periphery of the sealed end 32 of the oil distribution pan 3 is circumferentially formed with a protrusion 320 toward the elastic member group to facilitate the fitting of the second sub-elastic member 42 to the sealed end 32 of the oil distribution pan 3. The protrusion 320 can shorten the distance between the sealing end 32 of the oil distribution disc 3 and the pump body 1, so that the requirement on the elasticity of the second sub-elastic member 42 is lower, and a better sealing effect can be obtained. As shown in fig. 5, a plurality of flat spring pieces 420 and a plurality of bent spring pieces 421 are formed around the outer circumference of the second sub-elastic member 42, and the flat spring pieces 420 and the bent spring pieces 421 are spaced apart from each other. The flat spring plate 420 is perpendicular to the axis of the second sub-elastic member 42 and has an elastic force; the bent elastic piece 421 is formed with an inclined section and a vertical section, the inclined section is inclined toward a direction away from the oil distribution disc 3, and the vertical section is parallel to the flat elastic piece 420. Thus, when the second sub-elastic member 42 is sleeved on the second sub-step 31, the flat spring plate 420 can be attached to the sealing end 32 of the oil distribution disc 3, i.e. the protrusion 320, and the bent spring plate 421 can be attached to the bottom of the groove of the pump body 1, so that the sealing performance between the oil distribution disc 3 and the pump body 1 can be further improved, and the second sub-elastic member 42 can also reduce the axial force of the axial gap. In addition, because the elastic component group is attached to the pump body 1 and the oil distribution disc 3 by means of elasticity to realize sealing, the elastic component group does not have too fine requirements on the size, the flatness and the like of the pump body 1 and the oil distribution disc 3, and the production and manufacturing cost of enterprises is greatly reduced.

It should be noted that the specific dimensions of the first sub-elastic member 41 and the second sub-elastic member 42 are not particularly required, as long as they can be fitted to each other to ensure the sealing performance between the oil distribution pan 3 and the pump body 1, and as shown in fig. 5, the second sub-elastic member 42 is further formed with a plurality of through holes 422 for reducing the weight thereof, thereby enabling easier assembly. In addition, in order to further achieve sealing and reduce the radial force of the pressure oil, a sealing groove is further formed around the outer periphery of the oil distribution disc 3 for mounting members such as the seal ring 43 and the gasket, but the position, size, accuracy and the like of the sealing groove are not particularly required, and the sealing groove may be matched with the seal ring 43.

According to the gearbox oil pump of the utility model, the sealing performance of the oil pump can be effectively improved by arranging the elastic element group between the sealing end 32 of the oil distribution disc 3 and the pump body 1; by providing the vane grooves 240 of the rotor 24 in a U-shaped configuration and providing the rotating shaft 22 not to go beyond the oil distribution pan 3, the sealing performance of the oil pump can be further improved. In addition, the elastic part group has low manufacturing requirements on the precision, the size and the like of the pump body 1 and the oil distribution disc 3, and can reduce the comprehensive production cost of enterprises.

Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present application, and are used for illustrating the technical solutions of the present application, but not limiting the same, and the scope of the present application is not limited thereto, and although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope disclosed in the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the exemplary embodiments of the present application, and are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A transmission oil pump, comprising:

a pump body formed with a recess;

the oil control assembly is arranged in the groove; one end of the oil control assembly, which is close to the bottom of the groove, is connected with an oil distribution disc; and

and the sealing part is positioned between the oil distribution disc and the pump body and comprises an elastic group which is abutted with the oil distribution disc and the pump body.

2. The transmission oil pump of claim 1, wherein the set of springs includes a first sub-spring and a second sub-spring, the first sub-spring and the second sub-spring being sequentially connected to an end of the oil distribution pan distal from the oil control assembly to form a sealed end of the oil distribution pan.

3. The transmission oil pump of claim 2, wherein the oil distribution pan is a disc-like structure having an axis, and the sealed end of the oil distribution pan is sequentially formed with a step portion including at least a first sub-step and a second sub-step in a direction away from the oil control assembly, the axis of the step portion coinciding with the axis of the oil distribution pan.

4. The transmission oil pump of claim 3, wherein the first sub-elastic member and the second sub-elastic member are respectively sleeved on the first sub-step and the second sub-step, and through holes matched with the first sub-step and the second sub-step are respectively formed in the centers of the first sub-elastic member and the second sub-elastic member.

5. The transmission oil pump of claim 4, wherein the first sub-spring is a conical spring having a large diameter end that abuts a sealed end of the oil distribution pan.

6. The transmission oil pump of claim 5, wherein the second sub-spring is disc-like; the center of one end, facing the conical spring, of the second sub-elastic piece is provided with a concave part along the direction departing from the conical spring, and the concave part is matched with the small-diameter end of the conical spring.

7. The transmission oil pump of claim 6, wherein the second sub-elastic member is circumferentially formed with a plurality of flat spring pieces and a plurality of bent spring pieces, the plurality of flat spring pieces and the plurality of bent spring pieces being alternately arranged at intervals; the flat elastic sheet is attached to the sealing end of the oil distribution disc, and the bent elastic sheet is attached to the bottom of the groove of the pump body.

8. The transmission oil pump of claim 3, wherein the oil control assembly includes a shaft, an end of the shaft proximate to a bottom of the groove is connected to the oil distribution pan to form an oil control end of the oil distribution pan, and the oil control end and the sealing end are opposite to each other; the axis of the rotating shaft is superposed with the axis of the oil distribution disc.

9. The transmission oil pump of claim 8, wherein the oil control end of the oil distribution disc is formed with a connection hole adapted to the rotation shaft, and the depth of the connection hole is smaller than the distance between the oil control end of the oil distribution disc and the end of the stepped portion on the sealing end away from the rotation shaft.

10. The transmission oil pump of claim 9, wherein the oil control assembly further comprises a rotor mounted on the shaft, a stator mounted on an outer periphery of the rotor, and a plurality of vanes disposed between the stator and the rotor and around the outer periphery of the rotor;

the periphery of the rotor is circumferentially provided with a plurality of U-shaped concave parts which are opened in the direction away from the center of the rotor; the recess corresponds to the vane such that the vane can reciprocate within the recess.

Images