CN216131357U

CN216131357U - Transmission and vehicle

Info

Publication number: CN216131357U
Application number: CN202121897934.1U
Authority: CN
Inventors: 张恒; 苏宇; 付军; 孙艳; 苟世全; 谭艳军; 林霄喆; 王瑞平; 肖逸阁
Original assignee: Yiwu Geely Automatic Transmission Co ltd; Zhejiang Geely Holding Group Co Ltd; Ningbo Geely Royal Engine Components Co Ltd; Aurobay Technology Co Ltd
Current assignee: Yiwu Geely Automatic Transmission Co ltd; Zhejiang Geely Holding Group Co Ltd; Ningbo Geely Royal Engine Components Co Ltd; Aurobay Technology Co Ltd
Priority date: 2021-08-13
Filing date: 2021-08-13
Publication date: 2022-03-25
Anticipated expiration: 2031-08-13

Abstract

Embodiments of the present utility model provide a transmission and a vehicle, wherein the transmission includes an oil baffle set in a transmission case, the oil baffle and the transmission casing cooperate to form a first lubricating oil cavity, and the oil baffle and the transmission case cooperate to form a first lubricating oil cavity. A second lubricating oil cavity is formed between the clutch housings, the first lubricating oil cavity and the second lubricating oil cavity are communicated through the oil passage holes provided on the oil baffle plate, and the lubricating oil in the first lubricating oil cavity passes through the oil passage. The hole flows into the second lubricating oil chamber and lubricates the first bearing.

Description

Transmission and vehicle

Technical Field

The embodiment of the utility model relates to the field of vehicles, in particular to a transmission and a vehicle.

Background

At present, in order to meet the requirements of the power performance and the economy of the whole vehicle and adapt to different road conditions, different vehicle speeds and the like, a multi-gear scheme is adopted for a special hybrid vehicle transmission to be matched with an engine. The differential mechanism in the transmission is very important in design, and has the function of allowing the half shafts on two sides to rotate at different rotating speeds while transmitting power to the half shafts on two sides, so that wheels on two sides can run in a pure rolling mode at unequal distances as far as possible, the friction between tires and the ground is reduced, and the driving safety is further ensured. In the use process, lubricating oil is required to be injected to lubricate the differential so as to prolong the service life, and the lubrication plays a key role in the service life of a gear and a bearing. However, excessive transmission oil can cause the oil stirring loss of the main reduction gear to increase, so that the efficiency of the transmission is reduced and the economy of the whole vehicle is influenced; meanwhile, the high-speed rotation of the main reduction gear can stir transmission oil to generate a large amount of foam, so that the service life of an oil pump is influenced, and the pressure fluctuation in the gear shifting process is influenced. Too little transmission oil can cause ablation of the differential bearings, bevel gears.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a transmission and a vehicle, which can realize low dragging of lubricating oil, reduce oil stirring loss and further ensure the reliability and the economy of a differential.

The transmission comprises a transmission case and a differential shell rotatably arranged in the transmission case, wherein the transmission case comprises a transmission shell and a clutch shell, one end of the differential shell is supported in the clutch shell through a first bearing, the transmission further comprises an oil baffle plate arranged in the transmission case, the oil baffle plate is matched with the transmission shell to form a first lubricating oil cavity, a second lubricating oil cavity is formed between the oil baffle plate and the clutch shell, the first lubricating oil cavity and the second lubricating oil cavity are communicated through an oil passing hole formed in the oil baffle plate, and lubricating oil in the first lubricating oil cavity flows into the second lubricating oil cavity through the oil passing hole and lubricates the first bearing.

In an exemplary embodiment, a differential gear connected with the differential body is further arranged in the transmission case, and the oil passing hole is arranged at a corresponding position on the side surface of the differential gear.

In an exemplary embodiment, an oil deflector is provided on at least one of the transmission housing and the oil deflector, the oil deflector being arranged to seal a gap between the transmission housing and an edge of the oil deflector.

In an exemplary embodiment, the oil blocking rib includes a first oil blocking rib disposed on the oil blocking plate and a second oil blocking rib disposed on the transmission housing, and the first oil blocking rib and the second oil blocking rib are in sealing engagement.

In an exemplary embodiment, the clutch housing is provided with a mounting groove for mounting the first bearing, a groove wall of the mounting groove is provided with an oil passing gap, and at least one of the clutch housing and the oil baffle plate is provided with an oil guiding structure, wherein the oil guiding structure is configured to guide the lubricating oil in the second lubricating oil cavity to the oil passing gap.

In an exemplary embodiment, the oil guiding structure comprises a first oil guiding structure which is arranged on the clutch housing and communicated with the oil passing notch, and the first oil guiding structure extends along the periphery of the mounting groove and is sunken towards one side far away from the transmission housing.

In an exemplary embodiment, the oil guide structure further includes a second oil guide structure provided on the oil baffle plate, the second oil guide structure being configured to guide the lubricating oil of the second lubricating oil chamber to the first oil guide structure.

In an exemplary embodiment, the second oil guiding structure and the first oil guiding structure at least partially overlap in the circumferential direction with a gap left.

In an exemplary embodiment, the oil baffle is in an annular structure with a gap, is fixedly connected with the clutch housing and is arranged below the differential housing, and the oil baffle has a profile structure adapted to the structure of the differential housing.

The embodiment of the utility model provides a vehicle, including the derailleur in above-mentioned arbitrary embodiment.

In the embodiment of the utility model, the transmission is separated from the clutch shell and the transmission shell by the oil baffle plate, and the oil passing hole is designed on the oil baffle plate to prevent excessive transmission oil from entering the differential, so that low dragging of lubricating oil is realized, and generation of a large amount of foam is avoided, thereby reducing oil stirring loss of the gear, improving efficiency of the transmission, simultaneously ensuring lubrication of a bearing, the gear and the like, and ensuring reliability of the differential. In addition, the risk of oil pump gear pitting is reduced, and the gear shifting stability of the hydraulic system is guaranteed.

Additional features and advantages of embodiments of the utility model will be set forth in the description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the example serve to explain the principles of the utility model and not to limit the utility model.

FIG. 1 is a cross-sectional view of one direction of a transmission in accordance with an embodiment of the present invention;

FIG. 2 is a partial cross-sectional view of another direction of a transmission in accordance with an embodiment of the present invention;

FIG. 3 is a partial schematic illustration of a clutch housing of a transmission according to an embodiment of the present invention;

FIG. 4 is a schematic illustration of an oil deflector of a transmission according to an embodiment of the present invention;

FIG. 5 is a schematic illustration of an oil deflector of the transmission of the present invention mounted to a clutch housing;

FIG. 6 is a schematic view of the oil baffle of the transmission according to the embodiment of the utility model, which is installed in cooperation with the transmission housing.

Detailed Description

Embodiments of the present invention will be described herein with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

As shown in fig. 1-6, an embodiment of the present invention provides a transmission 100 that may be used in a vehicle such as a vehicle. The transmission 100 of the embodiment of the present invention includes: a transmission case 1 and a differential case 2 rotatably mounted in the transmission case 1.

As shown in fig. 1, the transmission case 1 includes a transmission housing 11 and a clutch housing 12. The clutch housing 12 is provided with a first support through hole 120, and the transmission housing 11 is provided with a second support through hole 110.

As shown in fig. 1, the differential case 2 includes a differential first case 21 and a differential second case 22. The rear end of the first differential case 21 is rotatably coupled in the first support through-hole 120 by a first bearing 23.

The front end of the first differential case 21 is connected to the front end of the second differential case 22. The rear end of the differential second housing 22 is rotatably coupled within the second support through bore 110 by a second bearing 24.

As shown in fig. 3, the clutch housing 12 is provided with a mounting groove 121 for mounting the first bearing 23, and a wall of the mounting groove 121 is provided with an oil passing notch 1210. In this embodiment, the oil passing notch 1210 includes a plurality of notches and is disposed at intervals. The clutch housing 12 is further provided with a first oil guiding structure 122, the first oil guiding structure 122 is communicated with the oil passing notch 1210, and can guide lubricating oil to flow into the mounting groove 121 through the oil passing notch 1210 to lubricate the first bearing 23. The first oil guide structure 122 extends along the outer circumference of the mounting groove 121 and is recessed to a side away from the transmission case 11.

As shown in fig. 1-2, 4-6, the transmission 100 further includes an oil baffle 3 disposed within the transmission case 1 between the first housing 21 and the clutch housing 12 of the differential 2. As shown in fig. 4 to 5, the oil baffle 3 is an annular structure with a notch, and is mounted on the lower half portion of the clutch housing 12, and is fixedly connected to the clutch housing 12 by a fastening bolt 30 a. The oil deflector 3 is provided with mounting holes 30b to be fitted with the fastening bolts 30 a.

As shown in fig. 1, the oil baffle 3 and the transmission case 11 cooperate to form a first lubricating oil chamber 31, and a second lubricating oil chamber 32 is formed between the oil baffle 3 and the clutch case 12. As shown in fig. 4, the oil baffle plate 3 is provided with an oil passing hole 33 that communicates the first lubricating-oil chamber 31 and the second lubricating-oil chamber 32, and the lubricating oil in the first lubricating-oil chamber 31 flows into the second lubricating-oil chamber 32 through the oil passing hole 33 and lubricates the first bearing 23. The oil passing holes 33 in this embodiment are provided in plural and spaced-apart arrangement. The oil pass holes 33 are used to control the flow of transmission oil into the differential. The differential gear 2a (refer to fig. 2) connected with the differential body is further arranged in the transmission case 1, and the oil passing hole 33 is arranged at a position corresponding to the side surface of the differential gear 2a, so that transmission oil is prevented from directly entering the rotation direction of the differential gear 2a, low dragging of lubricating oil is further realized, and generation of a large amount of foam is avoided.

The transmission 100 of the embodiment of the utility model separates the bottom surface of the oil baffle plate 3 from the clutch housing 12, separates the top surface of the oil baffle plate 3 from the transmission housing 11, and designs the oil passing hole 33 on the oil baffle plate 3, so that excessive transmission oil can be prevented from entering the differential, low dragging of lubricating oil is realized, generation of a large amount of foam is avoided, oil stirring loss of a main reduction gear is reduced, efficiency of the transmission is improved, meanwhile, lubrication of bearings, gears and the like can be ensured, and reliability of the differential is ensured. In addition, the risk of oil pump gear pitting is reduced, and the gear shifting stability of the hydraulic system is guaranteed.

As shown in fig. 4, the oil baffle 3 is further provided with a second oil guiding structure 35, and the second oil guiding structure 35 is configured to guide the lubricating oil in the second lubricating oil chamber 32 to the first oil guiding structure 122. The second oil guiding structure is a recess provided on the oil baffle 3. The second oil guiding structure 35 and the first oil guiding structure 122 are at least partially overlapped in the circumferential direction with a gap left. In other embodiments, an oil guiding structure may be disposed on one of the clutch housing 12 and the oil baffle plate 3, and the lubricating oil in the second lubricating oil chamber 32 may be guided to flow into the mounting groove 121 through the oil passing notch 1210, which is not limited herein.

In the transmission 100 of the embodiment of the present invention, the first oil guiding structure 122 is designed on the clutch housing 12, and the first oil guiding structure 122 of the clutch housing 12 is connected to the second oil retaining structure 35 of the oil retaining plate 3, so that when the differential rotates, the transmission oil is driven to smoothly enter the bearing of the differential, and lubrication of the bearing is ensured.

As shown in fig. 1 and 4, the oil baffle 3 is further provided with a first oil baffle rib 34 located at the outer edge of the oil baffle 3. The first oil deflector 34 is provided to seal a gap between the transmission case 11 and the oil deflector 3. As shown in fig. 6, the second oil blocking rib 111 is arranged at the outer edge of the transmission housing 11, and the first oil blocking rib 34 is matched with the second oil blocking rib 111 to more tightly seal the gap between the transmission housing 11 and the oil blocking plate 3, so that transmission oil is prevented from entering the differential, and the oil stirring loss of the differential gear 2a is reduced. In other embodiments, an oil blocking rib may be disposed on one of the oil blocking plate 3 and the transmission housing 11, and a gap between the transmission housing 11 and the oil blocking plate 3 may also be sealed, which is not limited herein.

According to the transmission 100 provided by the embodiment of the utility model, the oil baffle plate 3 and the transmission shell 11 are respectively provided with the first oil baffle rib 111 and the second oil baffle rib 34 which are matched with each other, so that a gap between the edges of the transmission shell 11 and the oil baffle plate 3 is sealed, excessive transmission oil is prevented from entering a differential, the oil stirring loss of a main reduction gear of the differential is reduced, the dynamic oil level of speed change is ensured, and the cooling of other sample parts is met.

As shown in fig. 4, the oil deflector 3 is further provided with a profile 36 similar to the differential case 2 in structure, and adapted to the differential case 2. When the differential rotates, the transmission oil is driven to smoothly enter the first supporting through hole 120 of the clutch housing 12, and the noise of oil stirring can be reduced.

The transmission 100 provided by the embodiment of the utility model can reduce the oil quantity in the oil cavity as much as possible on the premise of meeting the lubricating requirement, so that the low dragging of lubricating oil is realized. The transmission oil distribution device is simple in overall structure, reliability of the bearing can be better guaranteed without increasing parts, so that the number of parts, cost and verification period can be reduced. Meanwhile, the structure is compact, the speed changer with better carrying performance can be carried, the system efficiency of the speed changer is improved, the cost is lower, and the reliability is high.

The embodiment of the utility model also provides a vehicle comprising the transmission 100 of any of the embodiments. The specific structure and effects of the transmission 100 can be found in any of the above embodiments, and are not described in detail herein.

In the description herein, the term "plurality" refers to two or more. In the description herein, it is to be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "opposite", "four corners", "periphery", "mouth" structure ", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the structures referred to have a specific orientation, are configured and operated in a specific orientation, and thus, are not to be construed as limiting the present invention.

In the description herein, unless expressly stated or limited otherwise, the terms "connected," "directly connected," "indirectly connected," "fixedly connected," "mounted," and "assembled" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the terms "mounted," "connected," and "fixedly connected" may be directly connected or indirectly connected through intervening media, or may be connected through two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A transmission, comprising: the gearbox case with can install in the gearbox case differential mechanism casing, the gearbox case includes gearbox housing and clutch housing, and one end of differential mechanism casing passes through first bearing and supports in the clutch housing, its characterized in that:

the transmission is characterized by further comprising an oil baffle plate arranged in the transmission box, the oil baffle plate and the transmission shell are matched to form a first lubricating oil cavity, a second lubricating oil cavity is formed between the oil baffle plate and the clutch shell, the first lubricating oil cavity is communicated with the second lubricating oil cavity through an oil hole formed in the oil baffle plate, and lubricating oil in the first lubricating oil cavity flows into the second lubricating oil cavity through the oil hole and lubricates the first bearing.

2. The transmission of claim 1, wherein a differential gear connected to the differential body is further provided in the transmission case, and the oil passing hole is provided at a corresponding position on a side surface of the differential gear.

3. The transmission of claim 1, wherein at least one of the oil deflector and the transmission housing has an oil deflector rib disposed to seal a gap between the transmission housing and an edge of the oil deflector.

4. The transmission of claim 3, wherein the oil-blocking rib comprises a first oil-blocking rib disposed on the oil-blocking plate and a second oil-blocking rib disposed on the transmission housing, the first oil-blocking rib and the second oil-blocking rib being in sealing engagement.

5. The transmission of any one of claims 1 to 4, wherein a mounting groove for mounting the first bearing is formed in the clutch housing, an oil passing gap is formed in a wall of the mounting groove, and an oil guide structure is formed in at least one of the clutch housing and the oil baffle plate and configured to guide the lubricating oil in the second lubricating oil chamber to the oil passing gap.

6. The transmission of claim 5, wherein the oil guide structure comprises a first oil guide structure disposed on the clutch housing and communicating with the oil passing notch, the first oil guide structure extending along an outer periphery of the mounting groove and being recessed to a side away from the transmission housing.

7. The transmission of claim 6, wherein the oil directing structure further comprises a second oil directing structure disposed on the oil baffle plate, the second oil directing structure being configured to direct the oil of the second oil gallery to the first oil directing structure.

8. The transmission of claim 7, wherein the second oil directing structure and the first oil directing structure at least partially overlap in a circumferential direction with a gap.

9. The transmission of any one of claims 1 to 4, wherein the oil deflector is in the form of a notched annular structure fixedly connected to the clutch housing and disposed below the differential housing, the oil deflector having a contoured configuration adapted to the differential housing structure.

10. A vehicle, characterized by comprising: a variator as claimed in any one of claims 1 to 9.