CN113790150A

CN113790150A - Oil pump and transmission

Info

Publication number: CN113790150A
Application number: CN202111072028.2A
Authority: CN
Inventors: 白宝兴; 苟世全; 傅灵玲; 谭艳军; 林霄喆; 王瑞平; 肖逸阁
Original assignee: Zhejiang Geely Holding Group Co Ltd; Ningbo Shangzhongxia Automatic Transmission Co Ltd; Ningbo Geely Royal Engine Components Co Ltd; Aurobay Technology Co Ltd
Current assignee: Wuxi Xingqu Technology Co ltd; Zhejiang Geely Holding Group Co Ltd
Priority date: 2021-09-13
Filing date: 2021-09-13
Publication date: 2021-12-14
Anticipated expiration: 2041-09-13
Also published as: CN113790150B

Abstract

The invention discloses an oil pump and a transmission, wherein the oil pump is used for the transmission and comprises: the base is provided with a low-pressure oil duct, a high-pressure oil duct and a fine filter mounting position, and the fine filter mounting position is used for mounting a high-pressure filter of the transmission; the oil pump body is arranged on the base, one end of the low-pressure oil duct is connected with the oil pump body, and the other end of the low-pressure oil duct is connected with a hydraulic control unit of the transmission through a first oil pipe; the oil pump body is used for being communicated with the high-pressure filter, one end of the high-pressure oil duct is used for being connected with the high-pressure filter, and the other end of the high-pressure oil duct is used for being connected with a hydraulic control unit of the transmission through a second oil pipe. The technical scheme of the invention can reduce the volume of the transmission.

Description

Oil pump and transmission

Technical Field

The invention relates to the technical field of transmissions, in particular to an oil pump and a transmission.

Background

The electronic oil pump is widely applied to transmissions and mainly used as a driving unit of a gear shifting system and a cooling and lubricating system. Generally, the hydraulic control unit is integrated with necessary parts of a high-pressure hydraulic system such as an accumulator and a high-pressure filter, and the hydraulic control unit has a large volume, so that the arrangement positions of other parts in the transmission are limited, and the arrangement of the transmission in an automobile cabin is further limited.

Disclosure of Invention

The main object of the present invention is to provide an oil pump intended to reduce the volume of the transmission.

To achieve the above object, the present invention provides an oil pump for a transmission, the oil pump including:

the base is provided with a low-pressure oil duct, a high-pressure oil duct and a fine filter mounting position, and the fine filter mounting position is used for mounting a high-pressure filter of the transmission; and

the oil pump body is arranged on the base, one end of the low-pressure oil duct is connected with the oil pump body, and the other end of the low-pressure oil duct is connected with a hydraulic control unit of the transmission through a first oil pipe;

the oil pump body is used for being communicated with the high-pressure filter, one end of the high-pressure oil duct is used for being connected with the high-pressure filter, and the other end of the high-pressure oil duct is used for being connected with a hydraulic control unit of the transmission through a second oil pipe.

Optionally, the base is provided with a communication oil duct, one end of the communication oil duct is connected with the oil pump body, and the other end of the communication oil duct is connected with the high-pressure filter so as to communicate the oil pump body with the high-pressure filter.

Optionally, the housing of the oil pump body and the base are integrally formed.

Optionally, the low-pressure oil duct and the high-pressure oil duct are disposed on the same side of the base, and the oil pump body and the fine filter mounting position are disposed on the opposite side of the base.

Optionally, the low-pressure oil passage and the high-pressure oil passage protrude from the surface of the same side of the base.

Optionally, the low-pressure oil passage and the high-pressure oil passage are arranged on the base in a bent manner.

The invention also proposes a transmission comprising:

an oil pump;

the oil pump is arranged in the oil pump accommodating cavity;

a hydraulic control unit mounted to the housing;

one end of the first oil pipe is connected with the low-pressure oil duct, the other end of the first oil pipe is connected with the hydraulic control unit, one end of the second oil pipe is connected with the high-pressure oil duct, and the other end of the second oil pipe is connected with the hydraulic control unit.

Optionally, the transmission further comprises a first valve plate and a second valve plate, the second valve plate is integrated in the housing, the first valve plate is fixed to the second valve plate, and the hydraulic control unit is mounted to the first valve plate.

Optionally, a hydraulic accommodating cavity is formed in the shell, the second valve plate is integrated at the bottom of the hydraulic accommodating cavity, and the first valve plate is placed in the hydraulic accommodating cavity.

Optionally, the first oil pipe and the second oil pipe are both arranged separately from the housing.

Optionally, the oil pump accommodating cavity comprises a first accommodating cavity and a second accommodating cavity formed inside the shell, the oil pump body is placed in the first accommodating cavity, and the high-pressure filter is placed in the second accommodating cavity.

According to the technical scheme, the base is arranged on the oil pump, and the base can be used for mounting other parts of the transmission. Set up the essence on the base and strain the installation position, high pressure filter can install on the essence is strained the installation position to avoid installing high pressure filter in the other places of derailleur casing (like hydraulic control unit department), lead to the volume of hydraulic control unit department great, and the volume increase of hydraulic control unit department leads to the volume increase of derailleur easily. The oil pump is installed on the derailleur, installs high pressure filter on the base in this application to can utilize the suitable position of the casing of oil pump place derailleur, and with the reasonable setting of high pressure filter in the casing of derailleur, do not increase the volume of derailleur, reduced the volume of hydraulic control unit department and derailleur on the contrary. The first oil pipe and the second oil pipe are arranged, so that an oil passage can be prevented from being added to a shell of the transmission, and the manufacturing cost of the shell of the transmission is increased.

Drawings

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

FIG. 1 is an exploded view of one embodiment of a transmission housing and oil pump according to the present invention;

FIG. 2 is an exploded view of one embodiment of the transmission housing and hydraulic control unit of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Shell body	240	High-pressure oil duct
110	First accommodating cavity	300	High pressure filter
				120	Second containing cavity	400	First oil pipe
130	Hydraulic accommodating cavity	500	Second oil pipe
				200	Oil pump	600	First valve plate
210	Base seat	700	Second valve plate
				220	Oil pump body	800	Hydraulic control unit
230	Low-pressure oil duct

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is 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 at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The present invention proposes an oil pump 200.

In the embodiment of the present invention, as shown in fig. 1, the oil pump 200 is used for transmission shifting and cooling and lubricating the transmission, that is, the oil pump 200 is used in the transmission, and can be used for driving the transmission to shift and can be used for cooling and lubricating the transmission. The oil pump 200 includes a base 210 and an oil pump body 220. Base 210 is provided with at least a low pressure oil passage 230, a high pressure oil passage 240, and a fine filter mounting location. Low pressure gallery 230 may be provided for low pressure lubrication oil flow, high pressure gallery 240 may be provided for high pressure oil flow, and the fine filter mounting location is provided for high pressure filter 300 of the transmission, i.e. high pressure filter 300 is mounted on the fine filter mounting location of base 210. The oil pump body 220 is installed on the base 210, one end of the low-pressure oil passage 230 is connected to the oil pump body 220, and the other end of the low-pressure oil passage is connected to the hydraulic control unit 800 of the transmission through the first oil pipe 400, so as to control the low-pressure lubricating oil to cool and lubricate the transmission. It can be understood that the oil pump body 220, the low-pressure oil passage 230, and the first oil pipe 400 form a flow passage for low-pressure lubricating oil to flow through, the low-pressure lubricating oil flows through the low-pressure oil passage 230 and the first oil pipe 400 in sequence after flowing out from the oil pump 200, and then enters the hydraulic control unit 800, and the hydraulic control unit 800 can control the low-pressure lubricating oil and make the low-pressure lubricating oil cool and lubricate the transmission. The oil pump body 220 is used for communicating with the high-pressure filter 300, one end of the high-pressure oil passage 240 is connected to the high-pressure filter 300, and the other end of the high-pressure oil passage is used for being connected to a hydraulic control unit 800 of the transmission through a second oil pipe 500, so as to control the high-pressure oil to drive the transmission to shift gears. It is understood that the oil pump body 220, the high pressure filter 300, the high pressure oil passage 240, and the second oil pipe 500 form a flow passage through which high pressure oil flows. The high pressure oil flows through the high pressure filter 300, the high pressure oil duct 240, and the second oil pipe 500 in sequence after coming out of the oil pump 200, and then enters the hydraulic control unit 800, and the hydraulic control unit 800 can control the high pressure oil and can use the high pressure oil to shift gears of the transmission.

According to the technical scheme of the invention, the base 210 is arranged on the oil pump 200, and the base 210 can be used for mounting other parts of the transmission. The fine filter mounting position is arranged on the base 210, and the high-pressure filter 300 can be mounted on the fine filter mounting position, so that the situation that the high-pressure filter 300 is mounted at other places (such as the hydraulic control unit 800) of the transmission housing 100 to cause the volume of the hydraulic control unit 800 to be larger and the volume of the transmission is easily increased due to the volume increase of the hydraulic control unit 800 is avoided. The oil pump 200 is installed on the transmission, and the high pressure filter 300 is installed on the base 210 in the present application, so that the oil pump 200 can be utilized at a proper position of the transmission housing 100, and the high pressure filter 300 is reasonably arranged in the transmission housing 100, and the volume of the transmission is not increased, but the volume of the hydraulic control unit 800 and the volume of the transmission are reduced. The first oil pipe 400 and the second oil pipe 500 are further provided in the present invention, so that it is possible to avoid adding oil passages to the transmission case 100, thereby increasing the manufacturing cost of the transmission case 100.

Optionally, in an embodiment of the present application, as shown in fig. 1, the base 210 is provided with a communication oil passage, one end of the communication oil passage is connected to the oil pump body 220, and the other end of the communication oil passage is connected to the high pressure filter 300, so as to communicate the oil pump body 220 and the high pressure filter 300. In a more specific embodiment, the communication oil passage may be built in the base 210, may protrude from the surface of the base 210, or may be partly built in the base 210 and partly protrude from the surface of the base 210. The communication oil passage is used for high-pressure oil to flow through, and the high-pressure oil flows through the communication oil passage, the high-pressure filter 300, the high-pressure oil passage 240, the second oil pipe 500 in sequence after coming out of the oil pump 200, and then enters the hydraulic control unit 800. The communication oil passage communicates the oil pump body 220 and the high pressure filter 300.

Alternatively, in an embodiment of the present application, as shown in fig. 1, the housing of the oil pump body 220 is integrally formed with the base 210. It can be understood that the housing of the oil pump body 220 and the base 210 are integrally formed, and are a whole, so that the housing of the oil pump body 220 and the base 210 are prevented from being connected by other connecting parts (such as bolts and the like), and the installation time is prevented from being long and the arrangement in the transmission housing 100 is prevented from being influenced.

Alternatively, in an embodiment of the present application, as shown in fig. 1, the low pressure oil passage 230 and the high pressure oil passage 240 are disposed on the same side of the base 210, and the oil pump body 220 and the fine filter mounting position are disposed on the opposite side of the base 210. In a more specific embodiment, the base 210 is substantially similar to a flat plate, the low-pressure oil passage 230 and the high-pressure oil passage 240 are located on the same side (e.g., the upper side) of the base 210, and the oil pump body 220 and the fine filter are located on the lower side of the base 210, i.e., the oil pump body 220 and the high-pressure filter 300 are located on the lower side of the base 210, so that the components of the oil pump 200 can be reasonably arranged on the casing 100 of the transmission, the transmission is compact in structure, and the size of the transmission is reduced.

Alternatively, in one embodiment of the present application, as shown in fig. 1, the low pressure oil passage 230 and the high pressure oil passage 240 protrude from the surface of the base 210 on the same side. That is, low pressure oil passage 230 and high pressure oil passage 240 are exposed to the outer surface of base 210, and if low pressure oil passage 230 and high pressure oil passage 240 are both built in base 210, the thickness of base 210 may be increased. Therefore, the thickness of the base 210 of the present invention can be set to be thin.

Alternatively, according to an embodiment of the present application, as shown in fig. 1, the low pressure oil passage 230 and the high pressure oil passage 240 are arranged in a bent manner on the base 210. Because of the large number of components on base 210, low pressure gallery 230 and high pressure gallery 240 may employ as few bends as possible to avoid corresponding components on base 210.

The invention further provides a transmission, which comprises a housing 100, a hydraulic control unit 800 and an oil pump 200, the specific structure of the oil pump 200 refers to the above embodiments, and since the transmission adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.

As shown in fig. 2, the housing 100 is provided with an oil pump receiving chamber (not marked), the oil pump 200 is placed in the oil pump receiving chamber, and the first oil pipe 400 and the second oil pipe 500 are located inside the housing 100. That is, when the oil pump 200 is mounted on the housing 100, the oil pump 200 may be placed in the oil pump receiving chamber, and the first oil pipe 400 and the second oil pipe 500 are independently disposed inside the housing 100, rather than being integrated on the housing 100, i.e., both the first oil pipe 400 and the second oil pipe 500 are provided separately from the housing 100. The hydraulic control unit 800 is mounted to the housing 100. One end of the first oil pipe 400 is connected to the low pressure oil passage 230, and the other end is connected to the hydraulic control unit 800, that is, the first oil pipe 400 communicates the low pressure oil passage 230 and the hydraulic control unit 800. One end of the second oil pipe 500 is connected to the high-pressure oil passage 240, and the other end is connected to the hydraulic control unit 800, that is, the second oil pipe 500 communicates the high-pressure oil passage 240 and the hydraulic control unit 800.

The transmission of the present invention can avoid adding an oil passage to the transmission case 100 by providing the first oil pipe 400 and the second oil pipe 500 in the case 100, that is, the first oil pipe 400 and the second oil pipe 500 are independently disposed inside the case 100, rather than being integrated with the case 100, thereby increasing the manufacturing cost of the transmission case 100. The transmission also has the beneficial effects brought by the structure of the oil pump, and the details are not repeated.

Alternatively, as shown in fig. 2, the oil pump receiving cavity includes a first receiving cavity 110 and a second receiving cavity 120 formed inside the housing 100, the oil pump body 220 is placed in the first receiving cavity 110, and the high pressure filter 300 is placed in the second receiving cavity 120. It is understood that the first receiving chamber 110 and the second receiving chamber 120 may be independent of each other, not communicated with each other, and may be communicated with each other or communicated into a large receiving chamber. Two containing cavities, namely the first containing cavity 110 and the second containing cavity 120, can be dug in the housing 100, and the oil pump body 220 and the high-pressure filter 300 can be reasonably placed in the housing 100, so that the volume of the whole transmission housing 100 is reduced.

Optionally, in an embodiment of the present application, as shown in fig. 2, the transmission further includes a first valve plate 600 and a second valve plate 700, the second valve plate 700 is integrated with the housing 100, the first valve plate 600 is fixed to the second valve plate 700, and the hydraulic control unit 800 is mounted to the first valve plate 600. That is, the hydraulic control unit 800 is disposed on the first valve plate 600, the first valve plate 600 and the second valve plate 700 are fixedly connected, and can be fixed together by means of bolts, fasteners, and the like, and after the second valve plate 700 and the housing 100 are integrally formed, the height of the portion of the housing 100 where the hydraulic control unit 800 is located can be reduced, that is, the volume of the entire hydraulic control unit 800 is reduced.

Optionally, in an embodiment of the present application, as shown in fig. 2, a hydraulic pressure accommodating chamber 130 is provided on the housing 100, the second valve plate 700 is integrated at a bottom of the hydraulic pressure accommodating chamber 130, and the first valve plate 600 is placed in the hydraulic pressure accommodating chamber 130. That is, the housing 100 is hollowed with the hydraulic pressure receiving chamber 130, the second valve plate 700 is integrally formed with the chamber bottom, and the first valve plate 600 is fixed to the second valve plate 700. The integration of the second valve plate 700 with the chamber bottom can reduce the height of the hydraulic control unit 800 as a whole.

The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. An oil pump for a transmission, comprising:

2. The oil pump according to claim 1, wherein the base is provided with a communication oil passage, one end of which is connected to the oil pump body and the other end of which is connected to the high pressure filter to communicate the oil pump body with the high pressure filter.

3. The oil pump of claim 1, wherein the housing of the oil pump body is integrally formed with the base.

4. The oil pump of claim 1, wherein the low pressure oil passage and the high pressure oil passage are disposed on a same side of the base, and the oil pump body and the fine filter mounting position are disposed on an opposite side of the base.

5. The oil pump of claim 1, wherein the low pressure oil passage and the high pressure oil passage protrude from a surface of the base on the same side.

6. The oil pump according to any one of claims 1 to 5, characterized in that the low-pressure oil passage and the high-pressure oil passage are arranged in a bent manner in the base.

7. A transmission, comprising:

the oil pump of any one of claims 1 to 6;

the oil pump is arranged in the oil pump accommodating cavity;

a hydraulic control unit mounted to the housing;

8. The transmission of claim 7, further comprising a first valve plate and a second valve plate, the second valve plate being integrated into the housing, the first valve plate being secured to the second valve plate, the hydraulic control unit being mounted to the first valve plate.

9. The transmission of claim 8, wherein a hydraulic pressure accommodating chamber is formed in the housing, the second valve plate is integrated with a chamber bottom of the hydraulic pressure accommodating chamber, and the first valve plate is placed in the hydraulic pressure accommodating chamber; and/or

The first oil pipe and the second oil pipe are arranged separately from the shell.

10. The transmission according to any one of claims 7 to 9, wherein the oil pump accommodation chamber includes a first accommodation chamber and a second accommodation chamber formed inside the housing, the oil pump body is placed in the first accommodation chamber, and the high-pressure filter is placed in the second accommodation chamber.