CN214118913U

CN214118913U - Automobile transmission and automobile

Info

Publication number: CN214118913U
Application number: CN202021849978.2U
Authority: CN
Inventors: 凌和平; 翟震; 熊雨超; 张文程; 刘琳娜
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-09-03
Anticipated expiration: 2030-08-28

Abstract

The utility model belongs to the technical field of the automotive transmission, especially, relate to an automotive transmission and car. The automobile transmission comprises a transmission box body which is concave and provided with an accommodating cavity; an oil blocking rib plate which divides the accommodating cavity into a first oil liquid space and a second oil liquid space is arranged in the transmission box body; and the oil blocking rib plate is provided with an oil through hole for communicating the first oil liquid space and the second oil liquid space. The utility model discloses improved lubricating oil and to the lubricated effect of derailleur main part, this automotive transmission's simple structure, simple to operate simultaneously, the good reliability reaches intensity height.

Description

Automobile transmission and automobile

Technical Field

The utility model belongs to the technical field of the automotive transmission, especially, relate to an automotive transmission and car.

Background

With the continuous progress of science and technology, automobiles become common vehicles in people's lives, and the performance requirements of users on various aspects of automobiles are higher and higher. The speed changer can reduce the speed of the rotating speed output by the crankshaft of the automobile engine or the output shaft of the motor, thereby realizing the function of driving the automobile wheels to rotate. Install gear assembly and pivot subassembly in the derailleur, in order to guarantee the normal rotation of gear assembly and pivot subassembly, need add lubricating oil in the reduction gear, lubricate and cool down gear assembly, pivot subassembly.

In the prior art, the problems of oil temperature rise of lubricating oil, foam generation and the like exist when a transmission rotates, and the transmission efficiency of the transmission is reduced due to the problems; and the compressibility of the foam tends to cause problems with oil pressure drop and pressure fluctuations in the hydraulic system, which increases churning losses as the differential rotates.

Disclosure of Invention

The utility model discloses to the transmission efficiency of reduction gear among the prior art low, stir the big scheduling problem of oil loss, provide an automotive transmission and car.

In view of the above technical problem, an embodiment of the present invention provides an automotive transmission, including a transmission case recessed to form a receiving cavity; an oil blocking rib plate which divides the accommodating cavity into a first oil liquid space and a second oil liquid space is arranged in the transmission box body; and the oil blocking rib plate is provided with an oil through hole for communicating the first oil liquid space and the second oil liquid space.

Optionally, the automotive transmission further includes a transmission main body installed in the first oil space, and the oil blocking rib is provided around the transmission main body.

Optionally, the transmission main body further comprises a main shaft, an intermediate shaft, an output shaft, an input gear, an intermediate driving gear, an intermediate driven gear and an output gear; the main shaft, the intermediate shaft and the output shaft are arranged in parallel; the input gear is mounted on the main shaft, the intermediate driving gear and the intermediate driven gear are both mounted on the intermediate shaft, and the output gear is mounted on the output shaft; the intermediate driving gear is meshed with the input gear, and the intermediate driven gear is meshed with the output gear;

a first mounting groove, a second mounting groove and a third mounting groove which are communicated with the accommodating cavity are formed on the first inner side wall of the transmission box body, and a fourth mounting groove, a fifth mounting groove and a sixth mounting groove which are communicated with the accommodating cavity are formed on the second inner side wall of the transmission box body; the first inner side wall and the second inner side wall are oppositely arranged; the opposite ends of the main shaft are respectively installed in the first installation groove and the fourth installation groove, the opposite ends of the intermediate shaft are respectively installed in the second installation groove and the fifth installation groove, and the opposite ends of the output shaft are respectively installed in the third installation groove and the sixth installation groove.

Optionally, the oil blocking rib comprises a first arc rib arranged around the middle driving gear and a second arc rib arranged around the output gear; on a cross section perpendicular to the axial direction of the main shaft, one end of the second arc-shaped rib plate is connected with the transmission box body, and the other end of the second arc-shaped rib plate is connected with the first arc-shaped rib plate.

Optionally, the oil passing hole comprises a first oil hole and/or a second oil hole; the first oil hole is formed in the first arc-shaped rib plate; the second oil hole is formed in the second arc-shaped rib plate.

Optionally, the first tangent plane of the intermediate driving gear coincides with the second tangent plane of the output gear; the first tangent plane is a tangent plane which is parallel to the horizontal plane and is closest to the first arc-shaped rib plate in the tangent plane of the middle driving gear; the second tangent plane is a tangent plane which is parallel to the horizontal plane and is closest to the second arc-shaped rib plate in the tangent plane of the output gear.

Optionally, on a cross section perpendicular to the axial direction of the spindle, a distance between a first end of the first arc rib, which is far away from the second arc rib, and the first tangent plane is greater than a distance between a second end of the first arc rib, which is connected with the second arc rib, and the second tangent plane.

Optionally, the transmission case comprises a front case and a rear case connected with the front case; the oil blocking rib plate comprises a front oil blocking rib plate arranged on the front box body and a rear oil blocking rib plate arranged on the rear box body, and the front oil blocking rib plate is in butt joint with the rear oil blocking rib plate.

Optionally, a first contact surface is arranged on the front box body; the rear box body is provided with a second contact surface abutted against the first contact surface; the front box body is hermetically connected with the rear box body through the first contact surface and the second contact surface;

the front oil-retaining rib plate is close to the end face of the rear box body and is flush with the first contact surface, and the rear oil-retaining rib plate is close to the end face of the front box body and is flush with the second contact surface.

The utility model discloses another embodiment still provides an automobile, including foretell automotive transmission.

In the utility model, the transmission box body is sunken to form an accommodating cavity for installing the transmission main body; an oil blocking rib plate which divides the accommodating cavity into a first oil liquid space and a second oil liquid space is arranged in the transmission box body; and the oil blocking rib plate is provided with an oil through hole for communicating the first oil liquid space and the second oil liquid space. The utility model discloses in, be in quiescent condition or low-speed during operation when this automotive transmission main part, there is certain liquid level in the lubricating oil that holds in the cavity, first fluid space with the liquid level of the lubricating oil in the second fluid space keeps flat basically, thereby makes derailleur main part most soaks in the lubricating oil in second fluid space, lubricating oil is right this moment the lubricated effect of derailleur main part is good, and is in during the low-speed operation of derailleur main part, the oil loss that stirs of production is lower. When the automobile transmission works at a high speed, lubricating oil in the accommodating cavity splashes to one side close to the input gear along with the rotation of the transmission main body, so that the lubricating oil in the first oil liquid space and the lubricating oil in the second oil liquid space generate a liquid level height difference, the lubricating oil in the first oil liquid space flows to the second oil liquid space through the oil through hole under the pressure difference generated by the liquid level height difference, and the lubricating oil in the second oil liquid space is splashed to one side, close to the input gear of the transmission main body, of the first oil liquid space under the rotation of the transmission main body so as to circulate; thereby automobile transmission is in the high-speed effect that splashes that produces under the high-speed rotation of derailleur main part to the lubricating oil in the second fluid space when working, so, the lubricating oil that splashes has promoted when the derailleur is in high-speed operating condition to the lubricated effect of derailleur main part to the oil loss is stirred that produces when having reduced the high-speed operation of derailleur main part. The utility model discloses in, this automotive transmission's simple structure, simple to operate.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of a front case and a rear case of an automotive transmission according to an embodiment of the present invention;

fig. 2 is a schematic structural view illustrating a transmission main body of an automotive transmission according to an embodiment of the present invention mounted in a front case;

fig. 3 is a schematic structural diagram of a transmission main body of an automotive transmission according to an embodiment of the present invention;

fig. 4 is a partial schematic structural view of a transmission main body of an automotive transmission according to an embodiment of the present invention mounted on a front case;

fig. 5 is a schematic structural diagram of a rear case of an automotive transmission according to an embodiment of the present invention;

fig. 6 is a schematic view of the lubricating oil in the front case when the automotive transmission provided by the embodiment of the present invention is in a stationary state or in a low-speed operation state;

fig. 7 is a schematic view of the lubricating oil in the front case when the automotive transmission provided by the embodiment of the present invention operates at a high speed.

The reference numerals in the specification are as follows:

1. a transmission main body; 11. a main shaft; 12. an intermediate shaft; 13. an output shaft; 14. an input gear; 15. a middle driving gear; 151. a first section; 16. an intermediate driven gear; 17. an output gear; 171. a second section;

2. a transmission case; 21. an accommodating cavity; 211. a first oil space; 212. a second oil space; 22. an oil blocking rib plate; 221. an oil through hole; 2211. a first oil hole; 2212. a second oil hole; 222. a first arcuate rib; 223. a second arcuate rib; 224. a front oil retaining rib plate; 225. a rear oil baffle rib plate; 23. A first mounting groove; 24. a second mounting groove; 25. a third mounting groove; 26. a fourth mounting groove; 27. a fifth mounting groove; 28. a sixth mounting groove; 29. a front box body; 291. a first contact surface; 210. a rear box body; 2101. a second contact surface.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects 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 for purposes of illustration only and are not intended to limit the invention.

It is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", "middle", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the utility model, in order to better show the structure and connection relationship of the automobile transmission, the "up" in the invention is the direction pointing to the roof of the automobile (i.e. above the automobile transmission shown in fig. 1); the lower part in the invention is the direction which is actually pointed to the bottom of the automobile (namely the lower part of the automobile transmission shown in figure 1); "front" as referred to in this disclosure is the right side of the automotive transmission shown in FIG. 1; the "rear" referred to in this invention is to the left of the automotive transmission shown in FIG. 1.

As shown in fig. 1 to 3, an embodiment of the present invention provides an automobile transmission, which includes a transmission case 2 recessed to form a receiving cavity (the receiving cavity is mainly used for mounting a transmission main body 1); an oil blocking rib plate 22 which divides the accommodating cavity 21 into a first oil liquid space 211 and a second oil liquid space 212 is arranged in the transmission box body 2; the oil blocking rib plate 22 is provided with an oil through hole 221 communicating the first oil space 211 and the second oil space 212. Preferably, the oil deflector 22 is formed integrally with the transmission case 2. As can be understood, the integral structural design saves the expense and the processing cost of a separately installed die, and ensures that the structure of the automobile transmission is more reliable and has higher strength. The number of the oil through holes 221 may be set as required, the central axis of the oil through holes 221 may be arranged in the vertical direction, it is understood that the central axis of the oil through holes 221 may be inclined at a certain angle, and the inclination angle of each oil through hole 221 may be the same or different.

Further, as shown in fig. 3, the transmission of the automobile further includes a transmission main body 1 installed in the first oil space 221, and the oil blocking rib 22 is provided around the transmission main body 1. Specifically, the transmission main body 1 includes an input gear 14, an intermediate drive gear 15, an intermediate driven gear 16, and an output gear 17, all of which are mounted in the first oil space 221; the intermediate driving gear 15 is engaged with the input gear 14, and the intermediate driven gear 16 is engaged with the output gear 17; the oil blocking rib 22 is disposed around the intermediate driving gear 15 and the output gear, and when the intermediate driving gear 15 and the output gear 17 rotate at a high speed, the lubricating oil in the second oil space 212 is stirred to generate a splash technical effect.

In the utility model, the transmission case 2 is concavely provided with a containing cavity 21 for installing the transmission main body 1; an oil blocking rib plate 22 which divides the accommodating cavity 21 into a first oil liquid space 211 and a second oil liquid space 212 is arranged in the transmission box body 2; the oil blocking rib plate 22 is provided with an oil through hole 221 communicating the first oil space 211 and the second oil space 212. The utility model discloses in, be in quiescent condition or low-speed during operation when this automotive transmission main part 1, there is certain liquid level in the lubricating oil that holds in the cavity 21, first fluid space 211 with the liquid level of the lubricating oil in the second fluid space 212 is kept level basically, thereby makes 1 most of derailleur main part soak in the lubricating oil in second fluid space 212, lubricating oil is right this moment the lubricated effect of derailleur main part 1 is good, and is in during 1 low-speed operation of derailleur main part, the oil loss that stirs of production is lower. When the automobile transmission works at a high speed, the lubricating oil in the accommodating cavity 21 splashes to one side close to the input gear 14 along with the rotation of the transmission main body 1, so that a liquid level difference is generated between the lubricating oil in the first oil space 211 and the lubricating oil in the second oil space 212, the lubricating oil in the first oil space 211 flows to the second oil space 212 through the oil through hole 221 under the pressure difference generated by the liquid level difference, and the lubricating oil in the second oil space 212 is splashed to one side, close to the input gear 14 of the transmission main body 1, of the first oil space 211 under the rotation of the transmission main body 1, so as to circulate; therefore, when the automobile transmission works at a high speed, the lubricating oil in the second oil liquid space 212 can generate a splashing effect under the high-speed rotation of the transmission main body 1, so that the splashing lubricating oil promotes the lubricating effect on the transmission main body 1 when the transmission works at a high speed, and the oil stirring loss generated when the transmission main body 1 runs at a high speed is reduced. The utility model discloses in, this automotive transmission's simple structure, simple to operate.

In one embodiment, as shown in fig. 3, the transmission main body 1 further includes a main shaft 11, an intermediate shaft 12, and an output shaft 13; the main shaft 11, the intermediate shaft 12 and the output shaft 13 are arranged in parallel; the input gear 14 is mounted on the main shaft 11, the intermediate driving gear 15 and the intermediate driven gear 16 are both mounted on the intermediate shaft 12, and the output gear 17 is mounted on the output shaft 13; the intermediate driving gear 15 is engaged with the input gear 14, and the intermediate driven gear 16 is engaged with the output gear 17; preferably, the diameter of the output gear 17 is larger than that of the intermediate driven gear 16, the diameter of the intermediate driving gear 15 is larger than that of the input gear 14, and the diameter of the intermediate driving gear 15 is larger than that of the intermediate driven gear 16, so that the automobile speed reducer can have an effect of reducing the rotational speed output from the motor or the engine of the automobile.

As shown in fig. 4 and 5, a first mounting groove 23, a second mounting groove 24 and a third mounting groove 25 all communicated with the accommodating cavity 21 are formed on a first inner side wall of the transmission case 2, and a fourth mounting groove 26, a fifth mounting groove 27 and a sixth mounting groove 28 all communicated with the accommodating cavity 21 are formed on a second inner side wall of the transmission case 2; the first inner side wall and the second inner side wall are oppositely arranged; opposite ends of the main shaft 11 are respectively installed in the first installation groove 23 and the fourth installation groove 26, opposite ends of the intermediate shaft 12 are respectively installed in the second installation groove 24 and the fifth installation groove 27, and opposite ends of the output shaft 13 are respectively installed in the third installation groove 25 and the sixth installation groove 28. It is to be understood that the first inner side wall and the second inner side wall are opposite inner side walls of the transmission case 2.

Preferably, the transmission case 2 includes a front transmission case 29 and a rear case 210 connected to the front case 29, the first, second and third mounting

grooves

23, 24 and 25 are formed on an inner sidewall of the front case 29, and the fourth, fifth and sixth mounting

grooves

26, 27 and 28 are formed on an inner sidewall of the rear case 210.

Specifically, a first bearing is installed in the first installation groove 23, a second bearing is installed in the fourth installation groove 26, one end of the main shaft 11 is installed in the first installation groove 23 through the first bearing, and the other end of the main shaft 11 is installed in the fourth installation groove 26 through the second bearing; a third bearing is installed in the second installation groove 24, a fourth bearing is installed in the fifth installation groove 27, one end of the intermediate shaft 12 is installed in the second installation groove 24 through the third bearing, and the other end of the intermediate shaft 12 is installed in the fifth installation groove 27 through the fourth bearing; a fifth bearing is installed in the third installation groove 25, a sixth bearing is installed in the sixth installation groove 28, one end of the output shaft 13 is installed in the third installation groove 25 through the fifth bearing, and the other end of the output shaft 13 is installed in the sixth installation groove 28 through the sixth bearing.

Preferably, the input gear 14, the intermediate drive gear 15, the intermediate driven gear 16, and the output gear 17 are all helical gears. The design of the helical gear enables the mechanism of the transmission main body 1 to be more compact, the transmission efficiency to be higher and the transmission between the gears to be more stable.

In one embodiment, as shown in fig. 4, the oil stop rib 22 includes a first arc rib 222 disposed around the intermediate drive gear 15, and a second arc rib 223 disposed around the output gear 17; in a cross section perpendicular to the axial direction of the main shaft 11, one end of the second arc rib 223 is connected to the transmission case 2, and the other end of the second arc rib 223 is connected to the first arc rib 222. Preferably, the first arc rib 222 is coaxially disposed with the intermediate driving gear 15, and the second arc rib 223 is coaxially disposed with the output gear 17. It can be understood that, by the structural design of the oil blocking rib 22, as shown in fig. 6, when the transmission is in a static state or in the low-speed operation state, the lubricating oil in the second oil space 212 has a good lubricating effect on the intermediate driving gear 15 and the output gear 17 (the intermediate driving gear 15 and the output gear 17 are immersed in the lubricating oil in the second oil space 212).

In one embodiment, as shown in fig. 5, the oil passing hole 221 includes a first oil hole 2211 and/or a second oil hole 2212; the first oil hole 2211 is provided on the first arc rib 222; the second oil hole 2212 is provided on the second arc rib 223. It can be understood that the oil through hole 221 is formed in at least one of the first and second arc-shaped ribs. And the first oil hole 2211 and the second oil hole 2212 ensure that the lubricating oil of the first oil space 211 smoothly flows into the second oil space 212.

In one embodiment, as shown in fig. 3, the first cut surface 171 of the intermediate driving gear 15 coincides with the second cut surface 151 of the output gear 17 (i.e., the bottom of the intermediate driving gear 15 is aligned with the bottom of the output gear 17); the first tangent plane 171 is a tangent plane parallel to the horizontal plane and closest to the first arc rib 222 among the tangent planes of the middle driving gear 15; the second tangential plane 151 is a tangential plane parallel to the horizontal plane and closest to the second arc rib 223 among tangential planes of the output gear 17. It is understood that due to the error of actual manufacturing and assembling, there may be a certain height difference between the first tangent plane 171 and the second tangent plane 151, which includes, but is not limited to-20 mm. The utility model discloses in, middle driving gear 15 with output gear 17's arrangement, make middle driving gear 15 with output gear 17 can drive better lubricating oil in the second fluid space 212 passes through oil hole 221 splashes on each bearing of derailleur main part 1 and each gear to improve the lubricated effect of lubricating oil, prolonged this automotive transmission's life.

In one embodiment, as shown in fig. 6, in a cross section perpendicular to the axial direction of the spindle 11, a distance b between a first end of the first arcuate rib 222 away from the second arcuate rib 223 and the first tangential plane 171 is greater than a distance a between a second end of the first arcuate rib 222 connecting the second arcuate rib 223 and the second tangential plane 151. As can be understood, when the transmission is operated at a high speed, the lubricant in the second oil space 212 is thrown to one side of the input gear 14 by the intermediate driving gear 15 and the output gear 17, so that the lubricant in the first oil space 211 is higher at the right side and lower at the left side (and the level of the lubricant in the first oil space 211 is higher than that of the lubricant in the second oil space 212), thereby generating a pressure difference; the lubricating oil in the first oil space 211 is introduced into the second oil space 212 from the first oil hole 2211 and/or the second oil hole 2212 by the pressure difference, so that the second oil space 212 can continuously suck the lubricating oil from the first oil space 211 and is thrown toward the first oil space 211 by the high-speed rotation of the output gear 17 and the counter drive gear 15; the automobile transmission can continuously generate splashed lubricating oil.

In one embodiment, as shown in fig. 1 to 3, the transmission case 2 includes a front case 29 and a rear case 210 to which the front case 29 is attached (screwed, welded, etc.); the oil blocking rib 22 includes a front oil blocking rib 224 provided on the front case 29, and a rear oil blocking rib 225 provided on the rear case 210, and the front oil blocking rib 225 is butted against the rear oil blocking rib 225. It is to be understood that the front oil deflector 224 and the rear oil deflector 225 each include the first arcuate rib 222 and the second arcuate rib 223; preferably, the front oil blocking rib 224 and the front case 29 are integrally formed, and the rear oil blocking rib 225 and the rear case 210 are integrally formed. As can be appreciated, the integrally formed design saves the expense and processing cost of a separately installed mold, and makes the structure of the automobile transmission more reliable and stronger.

Further, after the front case 29 is connected to the rear case 210, the front case 29 and the rear case 210 are abutted against each other, the front oil blocking rib 224 and the rear oil blocking rib 225 after the abutment divide the lubricating oil in the accommodating chamber 21 into two parts, one part of the lubricating oil in the accommodating chamber 21 is located in the first oil liquid space 211, and the other part of the lubricating oil is located in the second oil liquid space 212. The utility model discloses in, this automotive transmission's simple structure, simple to operate.

In one embodiment, as shown in fig. 4 and 5, the front case 29 is provided with a first contact surface 291; a second contact surface 2101 abutted against the first contact surface 291 is arranged on the rear box 210; the front case 29 is hermetically connected with the rear case 210 through the first contact surface 291 and the second contact surface 2101; it is understood that the front casing 29 and the rear casing 210 can be connected by bolts, and the first contact surface 291 and the second contact surface 2101 can be sealed by a sealing gasket, so as to ensure that the lubricant in the receiving cavity 21 does not leak out.

The end surface of the front oil rib 224 close to the rear case 210 is flush with the first contact surface 291, and the end surface of the rear oil rib 224 close to the front case 29 is flush with the second contact surface 2101. It can be understood that, due to the actual installation error and the manufacturing error, a certain distance error may exist between the end surface of the front oil rib 224 close to the rear case 210 and the first contact surface 291, for example, the distance error is-20 mm to 20 mm; the end surface of the rear oil rib 225 close to the front case 29 and the second contact surface 2101 may have a certain distance error, for example, the distance error is-20 mm to 20 mm.

In the present invention, the end surface of the front oil-blocking rib plate 224 away from the front box 29 is flush with the first contact surface 291, and the end surface of the rear oil-blocking rib plate 225 away from the rear box 210 is flush with the second contact surface 2101; therefore, better butt joint between the front oil rib plate 224 and the rear oil rib plate 225 is ensured, and the reliability of the automobile transmission is improved.

In one embodiment, the diameter of the oil through hole 221 ranges from 10mm to 30 mm. It is understood that the oil through hole 221 may be designed to have other diameters according to actual requirements; the oil through hole 221 is designed to be small in aperture, so that when the automobile speed reducer is in a static state or a low-speed running state, the front oil retaining rib plate and the rear oil retaining rib plate are favorable for blocking the flow of lubricating oil; meanwhile, when the automobile transmission is in a high-speed running state, lubricating oil in the second oil chamber flows to the first oil chamber.

The invention further provides an automobile comprising the automobile transmission.

The above description is only an example of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The automobile transmission is characterized by comprising a transmission box body, a transmission cover and a transmission cover, wherein a containing cavity is formed in the transmission box body in a sunken mode; an oil blocking rib plate which divides the accommodating cavity into a first oil liquid space and a second oil liquid space is arranged in the transmission box body; and the oil blocking rib plate is provided with an oil through hole for communicating the first oil liquid space and the second oil liquid space.

2. The automotive transmission of claim 1, further comprising a transmission body mounted in the first oil space, the oil deflector being disposed around the transmission body.

3. The automotive transmission of claim 2, wherein the transmission body further includes a main shaft, an intermediate shaft, an output shaft, an input gear, an intermediate drive gear, an intermediate driven gear, and an output gear; the main shaft, the intermediate shaft and the output shaft are arranged in parallel; the input gear is mounted on the main shaft, the intermediate driving gear and the intermediate driven gear are both mounted on the intermediate shaft, and the output gear is mounted on the output shaft; the intermediate driving gear is meshed with the input gear, and the intermediate driven gear is meshed with the output gear;

4. The automotive transmission of claim 3, wherein the oil deflector includes a first arcuate rib disposed about the intermediate drive gear and a second arcuate rib disposed about the output gear; on a cross section perpendicular to the axial direction of the main shaft, one end of the second arc-shaped rib plate is connected with the transmission box body, and the other end of the second arc-shaped rib plate is connected with the first arc-shaped rib plate.

5. The automotive transmission of claim 4, characterized in that the oil passage hole includes a first oil hole and/or a second oil hole; the first oil hole is formed in the first arc-shaped rib plate; the second oil hole is formed in the second arc-shaped rib plate.

6. The automotive transmission of claim 4, wherein a first cut plane of the idler drive gear coincides with a second cut plane of the output gear; the first tangent plane is a tangent plane which is parallel to the horizontal plane and is closest to the first arc-shaped rib plate in the tangent plane of the middle driving gear; the second tangent plane is a tangent plane which is parallel to the horizontal plane and is closest to the second arc-shaped rib plate in the tangent plane of the output gear.

7. The vehicular transmission according to claim 6, wherein, in a cross section perpendicular to an axial direction of the main shaft, a distance between a first end of the first arcuate rib, which is remote from the second arcuate rib, and the first tangential plane is larger than a distance between a second end of the first arcuate rib, which is connected to the second arcuate rib, and the second tangential plane.

8. The automotive transmission of claim 1, wherein the transmission case includes a front case and a rear case connected to the front case; the oil blocking rib plate comprises a front oil blocking rib plate arranged on the front box body and a rear oil blocking rib plate arranged on the rear box body, and the front oil blocking rib plate is in butt joint with the rear oil blocking rib plate.

9. The automotive transmission of claim 8, wherein the front housing defines a first contact surface; the rear box body is provided with a second contact surface abutted against the first contact surface; the front box body is hermetically connected with the rear box body through the first contact surface and the second contact surface;

10. A vehicle comprising a vehicle transmission according to any one of claims 1 to 9.