Casing, transmission and vehicle

Abstract

The application belongs to the technical field of transmission housings, and discloses a housing applied to a transmission, which is provided with: a bearing hole for mounting a bearing; and an oil guide rib arranged on the inner wall of the housing, wherein the oil guide rib is located on the outer side of the upper half of the bearing hole, is arranged to be inclined relative to the horizontal direction, and is provided with an oil guide groove at the end thereof which is away from the inner wall of the housing, so that the splashed oil in the housing can be splashed into the oil guide groove and flow into the bearing hole through the oil guide groove. The housing can make the splashed oil flow into the bearing hole along the oil guide groove, so as to effectively lubricate the bearing.

Description

Technical Field

[0001] This application relates to the field of gearbox technology, and more particularly to a transmission and vehicle. Background Technology

[0002] The drive shaft within a transmission is typically supported on the housing by bearings. Lubricating oil splashed from the gears inside the housing cannot directly enter the bearing bores to lubricate them. Related technologies incorporate radially radiating oil guide ribs around the bearing bores to guide the splashed oil. However, most of the circumferentially splashed oil is bounced off the surface of the guide ribs, and a small portion adhering to the surface falls back under gravity. Only a very small amount of oil manages to flow into the bearing bore under the guidance of the guide ribs, thus failing to provide effective lubrication to the bearings. Utility Model Content

[0003] This application aims to solve the technical problems existing in the prior art. Therefore, one objective of this application is to provide a housing that can improve the lubrication effect of bearings.

[0004] This application proposes a housing for use in a transmission. The housing is provided with: a bearing hole for mounting a bearing; and an oil guide rib located on the inner wall of the housing. The oil guide rib is located on the outer side of the upper half of the bearing hole and is inclined relative to the horizontal direction. An oil guide groove is provided at the end of the oil guide rib away from the inner wall of the housing, so that the oil splashed in the housing can splash to the oil guide groove and flow into the bearing hole through the oil guide groove.

[0005] According to the housing of this application, by setting an oil guide groove at the end of the oil guide rib, the oil stirred up by the gear in the housing splashes into the oil guide groove, and the oil on the inner wall of the oil guide groove flows into the bearing hole along the oil guide groove under the action of adhesion and gravity towards the inner wall of the oil guide groove, so as to effectively lubricate the bearing.

[0006] In some embodiments of this application, the oil guide groove extends along the extension direction of the end of the oil guide rib away from the inner wall of the box, and the end of the oil guide rib away from the inner wall of the box is arc-shaped.

[0007] In some embodiments of this application, the center of the arc is located on the side of the oil guide groove away from the inner wall of the box.

[0008] In some embodiments of this application, the cross-section of the oil guide groove is fan-shaped or rectangular.

[0009] In some embodiments of this application, the inner wall of the housing is provided with an annular protrusion, the inner side of the protrusion is configured as the bearing hole, the protrusion is provided with a first notch, the oil guide groove and the bearing hole are connected through the first notch, and / or, the protrusion is provided with a second notch, the second notch penetrates the radial inner side and the radial outer side of the protrusion, and the second notch is located at the bottom of the protrusion.

[0010] In some embodiments of this application, the first notch extends from the end face of the protrusion to the inner wall surface of the housing, and the bottom end of the oil guide rib extends to the radial outer side of the protrusion.

[0011] In some embodiments of this application, the housing has a mating surface, the top end face of the oil guide rib is flush with the mating surface, and / or the oil guide rib is a flat plate.

[0012] This application proposes a transmission including the housing of any of the above embodiments.

[0013] In some embodiments of this application, an oil stirring gear is included, which is rotatably disposed in the housing, the oil guide rib has a first side side, the oil stirred up by the oil stirring gear can splash onto the first side side, and the oil guide groove is formed on the first side side.

[0014] This application proposes a vehicle including the transmission of any of the above embodiments. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0016] Figure 1 This is a partial structural schematic diagram of the box provided in an embodiment of this application.

[0017] Figure 2 yes Figure 1 A magnified view at point A.

[0018] Figure 3 yes Figure 1 Enlarged view at point B,

[0019] Figure 4 This is a schematic diagram of the structure of the oil guide rib provided in the embodiment of this application.

[0020] Figure 5 This is a partial structural schematic diagram of the transmission provided in an embodiment of this application.

[0021] Figure label:

[0022] 1. Housing; 11. Protrusion; 111. Bearing hole; 112. First notch; 1121. First sub-notch; 1122. Second sub-notch; 113. Second notch; 12. Oil guide rib; 121. Oil guide groove; 123. First sub-rib; 124. Second sub-rib; 13. Gear housing surface; 2. Oil stirring gear; 3. Main shaft; 4. First gear; 5. Countershaft; 6. Second gear; 7. Third gear; 8. Differential; 81. Fourth gear Detailed Implementation

[0023] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0024] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0025] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0026] In the description of this application, "multiple" means two or more, and "several" means one or more.

[0027] A common type of transmission is a gear mechanism-based gear transmission. The transmission includes a housing and a gear mechanism. The housing has a cavity, and the gear mechanism is placed in the cavity. The bottom of the cavity is filled with lubricating oil for lubricating the gear mechanism. Usually, some of the gear teeth at the bottom of the cavity are immersed below the surface of the lubricating oil. When the gear rotates, it stirs up the oil, and the stirred-up oil splashes into the cavity to lubricate the parts or areas to be lubricated.

[0028] A gear mechanism typically consists of a drive shaft and gears fixed or integrally formed on the drive shaft. The drive shaft is rotatably supported on the housing by bearings. Specifically, the housing has bearing holes, the bearings are located in the bearing holes, the outer ring of the bearings is interference-fitted with the surface of the bearing holes, and the inner ring of the bearings is fitted on the drive shaft and interference-fitted with the drive shaft, so that the drive shaft drives the gears to rotate relative to the housing to transmit power.

[0029] This application provides a housing 1, such as... Figure 1This is applied to a transmission. The housing 1 is provided with: a bearing hole 111 for mounting bearings; and an oil guide rib 12, which is located on the inner wall of the housing 1. The oil guide rib 12 is located on the outer side of the upper half of the bearing hole 111. The oil guide rib 12 is inclined relative to the horizontal direction. The end of the oil guide rib 12 away from the inner wall of the housing 1 is provided with an oil guide groove 121. The oil splashed in the housing 1 can splash to the oil guide groove 121 and flow into the bearing hole 111 through the oil guide groove 121.

[0030] It can be understood that the bearing hole 111 is opened on the inner wall surface of the housing 1, and the oil guide rib 12 extends from the inner wall surface of the housing 1 in a direction away from the inner wall surface of the housing 1. It can also be understood that the oil guide rib 12 has a first end and a second end in the thickness direction of the housing 1, the first end is connected to the inner wall surface of the housing 1, and the second end is provided with an oil guide groove 121.

[0031] According to the housing 1 of this application, an oil guide groove 121 is provided at the end of the oil guide rib 12, such as... Figure 5 The housing 1 is equipped with a rotatable oil-stirring gear 12. The oil stirred up by the oil-stirring gear 12 can splash onto the oil guide groove 121. Since the oil guide rib 12 is located on the outer side of the upper half of the bearing hole 111 and is inclined relative to the horizontal direction, such as Figure 4 Force analysis shows that the oil adhering to the inner wall of the oil guide groove 121 is subjected to the adhesion force F1 and the gravity g acting on the inner wall of the oil guide groove 121. The resultant force F of the adhesion force F1 and the gravity g is obliquely downward. Under the action of the resultant force F, the oil droplets flow into the bearing hole 111 along the oil guide groove 121, effectively lubricating the bearing.

[0032] The oil guide rib 12 is inclined relative to the horizontal direction, which can be understood as having an angle between the oil guide rib 12 and the horizontal direction. The angle ranges from 0° to 180°, but does not include 0° and 180°. That is, the oil guide rib 12 is not parallel to the horizontal direction, so that the oil in the oil guide groove 121 at the end of the oil guide rib 12 can flow into the bearing hole 111 under the action of gravity. It can be understood that this angle is the angle between the extension direction of the oil guide rib 12 and the horizontal direction when the transmission is in the working position.

[0033] The oil-guiding lubrication structure of this application relies entirely on splash lubrication power, without the need for an additional oil pump or oil spraying device, without increasing parts and power loss, and only requires modification to the existing bearing hole 111 reinforcing rib structure of the housing 1, avoiding major changes to the structure of the housing 1 and modification of the mold. The structure is simple, reliable and economical.

[0034] In some embodiments, the oil guide groove 121 extends along the extension direction of the end of the oil guide rib 12 away from the inner wall of the housing 1, and the end of the oil guide rib 12 away from the inner wall of the housing 1 is arc-shaped.

[0035] like Figure 4 and Figure 5The end of the oil guide rib 12 facing away from the inner wall of the housing 1 is arc-shaped, and the oil guide groove 121 is also arc-shaped. The arc-shaped end of the oil guide rib 12 is integrally formed by die casting of the housing 1. Its radius of curvature R and the thickness t of the oil guide rib 12 can satisfy R≥3t, taking into account both the structural strength of the oil guide rib 12 and the smoothness of oil flow. Compared with the straight end profile of the trapezoidal oil guide rib 12 plate, the arc profile can increase the length of the oil guide groove 121. By increasing the inner wall surface area of ​​the oil guide groove 121, more oil can adhere to the inner wall of the oil guide groove 121 and flow into the bearing hole 111.

[0036] In some embodiments, the center of the arc is located on the side of the oil guide groove 121 away from the inner wall of the housing 1.

[0037] Continue reading Figure 4 and Figure 5 The end of the oil guide rib 12 where the oil guide groove 121 is located is concave arc-shaped. Compared with the convex arc shape, the material used in the oil guide rib 12 is reduced, which is conducive to the weight reduction of the housing 1. In addition, the concave arc shape can also avoid interference with the surrounding structure of the oil guide rib 12, and avoid interference risks caused by insufficient safe distance from moving parts.

[0038] In some embodiments, the cross-section of the oil guide groove 121 is fan-shaped or rectangular.

[0039] When the oil guide groove 121 adopts a fan-shaped cross-section, the inner wall is smooth and without sharp edges, resulting in minimal resistance to oil flow and allowing the oil to smoothly enter the bearing hole 111. Figure 2 The cross-section of the oil guide groove 121 shown is one-quarter of a circle, which has a simple structure and makes it easy for oil to accumulate.

[0040] When the oil guide groove 121 adopts a rectangular cross section, such as Figure 3 and Figure 4 Its sidewalls are perpendicular to the extension direction of the oil guide rib 12, which facilitates demolding of the die-casting mold and reduces manufacturing costs. In addition, compared with the fan-shaped cross-section, the rectangular oil guide groove 121 has a larger surface area, which can adhere to more oil splashed onto the oil guide groove 121 and improve the lubrication effect on the bearing.

[0041] It should be noted that, as Figure 2 and Figure 3 To facilitate demolding and removal, the ends and sides of the oil guide rib 12 are usually rounded. The sides of the oil guide groove 121 and the oil guide rib 12, as well as the end face of the oil guide rib 12, are also rounded. The bottom of the rectangular cross-section oil guide groove 121 is also provided with a micro-arc surface, for example, the arc radius is 0.2mm to 0.5mm.

[0042] The oil guide rib 12 can be die-cast together with the body of the housing 1. The oil guide groove 121 can be die-cast or machined. The cross-sectional shape of the oil guide groove 121 can be selected according to the processing method, etc.

[0043] In some embodiments, the inner wall of the housing 1 is provided with an annular protrusion 11, the inner side of the protrusion 11 is configured as a bearing hole 111, the protrusion 11 is provided with a first notch 112, and the oil guide groove 121 and the bearing hole 111 are connected through the first notch 112; and / or, the protrusion 11 is provided with a second notch 113, the second notch 113 penetrates the radial inner side surface and the radial outer side surface of the protrusion 11, and the second notch 113 is located at the bottom of the protrusion 11.

[0044] like Figure 1 and Figure 5 The annular protrusion 11 serves as the bearing mounting base, and its inner wall directly forms the bearing hole 111, ensuring positioning accuracy and rigidity.

[0045] In some embodiments, a first notch 112 is provided on the wall of the protrusion 11 and extends radially through it. The width can be from 3mm to 8mm. The first notch 112 connects the oil guide groove 121 and the bearing hole 111, allowing oil in the oil guide groove 121 to flow into the bearing hole 111 through the first notch 112 to lubricate the bearing. To facilitate the complete entry of oil from the oil guide groove 121 into the first notch 112, a drainage groove can also be provided between the end of the oil guide groove 121 and the first notch 112. Considering the structural strength of the housing 1, the depth of the drainage groove should not be too deep.

[0046] In some embodiments, the oil guide groove 121 and the bearing hole 111 can be connected in other ways, such as an oil hole that radially penetrates the wall of the protrusion 11. The protrusion 11 is provided with a second notch 113, which is located at the bottom of the protrusion 11 and radially penetrates the wall of the protrusion 11. The width can be 2mm to 5mm. Its function is to allow the return oil that has lubricated and cooled the bearing and accumulated at the bottom of the bearing hole 111 to flow back to the main oil pool through the second notch 113. The main oil pool can be the inner cavity of the housing 1, thereby forming a circulation of lubricating oil.

[0047] In some embodiments, such as Figure 1 and Figure 5 The protrusion 11 is provided with a first notch 112 and a second notch 113. The first notch 112 and the second notch 113 work together to form a "top-in, bottom-out" circulating oil circuit to achieve dynamic balance of oil in the bearing area.

[0048] It should be noted that the second notch 113 is located at the bottom of the protrusion 11. This means that when the transmission is in the working position, the second notch 113 is located at the bottom of the protrusion 11, so that the oil can return naturally by gravity without the need for an additional return pump.

[0049] In some embodiments, the first notch 112 extends from the end face of the protrusion 11 to the inner wall surface of the housing 1, and the bottom end of the oil guide rib 12 extends to the radial outer surface of the protrusion 11.

[0050] like Figure 1 The first notch 112 extends from the end face of the protrusion 11 to the inner wall of the housing 1, meaning the depth of the first notch 112 is the same as the depth of the protrusion 11. This allows the first notch 112 to not only guide oil from the oil guide groove 121 into the bearing hole 111, but also to allow oil splashed onto the surface of the oil guide rib 12 and the adjacent inner wall of the housing 1 to enter the bearing hole 111 under the guidance of the first notch 112, thereby increasing the amount of oil entering the bearing hole 111 and improving the lubrication effect of the bearing. However, the deeper first notch 112 significantly weakens the strength and rigidity of the annular protrusion 11, i.e., the bearing mounting seat. The bottom end of the oil guide rib 12 extends to the radially outer side of the protrusion 11, forming an integrated structure of "oil guide rib 12-protrusion 11". This allows the oil guide rib 12 to not only perform the function of guiding oil, but also serve as a structural reinforcing rib of the protrusion 11, improving the deformation resistance of the housing 1 in the bearing hole 111 area and increasing the service life of the bearing and the transmission.

[0051] The bottom end of the oil guide rib 12 extends to the radial outer side of the protrusion 11, which means that the bottom end of the oil guide rib 12 is offset from the first notch 112 in the circumferential direction. On the one hand, this simplifies the connection structure between the oil guide rib 12 and the annular protrusion 11, and on the other hand, it facilitates the connection between the oil guide groove 121 and the first notch 112.

[0052] In some embodiments, the housing 1 has a mating surface 13, and the end face of the top of the oil guide rib 12 is flush with the mating surface 13.

[0053] It should be noted that the transmission components of the gearbox, such as gears and shafts, are usually housed within the outer casing's accommodating cavity. This cavity not only houses the transmission components but also forms a main oil sump at its bottom, used to hold lubricating oil. This lubricating oil is then agitated by the churning gear 12 to lubricate the meshing surfaces of the gears and bearings. In terms of manufacturing process, to allow the transmission components to be installed within the closed accommodating cavity, the outer casing typically includes at least two housings 1, each forming a sub-accommodating cavity. The sub-accommodating cavities of each housing 1 are interconnected to form the gearbox's accommodating cavity. After the transmission components are assembled, the housings 1 are joined together to seal the accommodating cavity. The mating surface 13 mentioned above is the joint surface where the housings 1 connect.

[0054] like Figure 1 , Figure 2 and Figure 3 As shown, the top end face of the oil guide rib 12 is flush with the housing surface 13, that is, the oil guide rib 12 extends from the housing surface 13 to the outer edge of the bearing mounting seat, which further improves the rigidity, strength and modal properties of the housing 1, which is beneficial to improving the service life of the transmission, and improves the NVH (Noise, Vibration and Harshness) of the transmission by improving the deformation resistance of the housing 1.

[0055] In some embodiments, the oil guide rib 12 is a flat plate.

[0056] like Figure 2 , Figure 3 and Figure 4 The oil guide rib 12 is a flat plate. Compared with the V-shaped or arc-shaped oil guide ribs in related technologies, the flat plate ribs of the oil guide rib 12 have a better effect on improving the rigidity and deformation resistance of the box body 1, and use less material, thus improving the lightweight level of the box body 1.

[0057] In some embodiments, the housing 1 has a mating surface 13, the top end face of the oil guide rib 12 is flush with the mating surface 13, and the oil guide rib 12 is a flat plate. The oil guide rib 12 thus provides both oil guiding and reinforcing functions. By utilizing a simple, reliable, and economical structure to ensure the rigidity and strength of the housing 1, it also achieves effective lubrication of the bearings inside the bearing holes 111, which is beneficial to improving bearing life and transmission reliability.

[0058] This application also provides a transmission, such as... Figure 5 As shown, the transmission includes the housing 1 of any of the above embodiments and has all the beneficial technical effects of the housing 1 described above.

[0059] In some embodiments, the transmission further includes an oil stirring gear 12, which is rotatably disposed in the housing 1. The oil guide rib 12 has a first side side, and the oil stirred up by the oil stirring gear 12 can splash to the first side side. The oil guide groove 121 is formed on the first side side.

[0060] like Figure 5 As shown, the oil-stirring gear 12 is located above the oil sump at the bottom of the housing 1. During rotation, the teeth of the oil-stirring gear 12 throw oil towards the upper part of the housing 1, forming a high-speed oil mist and droplet flow. The first side of the oil guide rib 12 faces the rotation direction of the oil-stirring gear 12, and an oil guide groove 121 is formed on the first side to allow oil to splash onto the oil guide groove 121. The oil splashed onto the surface of the oil guide groove 121, under the influence of adhesion and gravity, flows along the oil guide groove 121 into the bearing hole 111 to lubricate the bearing. Furthermore, oil mist inside the housing 1 comes into contact with the side of the oil guide rib 12 and condenses into oil droplets on the cooler surface of the oil guide rib 12. Some of these oil droplets slide down the surface of the oil guide rib 12 into the oil guide groove 121 and also flow along the oil guide groove 121 into the bearing hole 111 to lubricate the bearing.

[0061] In some embodiments, the oil guide rib 12 has a first side and a second side. When the oil stirring gear 12 rotates along the first direction, the first side faces the first direction. When the oil stirring gear 12 is optionally installed along the second direction, the second side faces the second direction. The first direction and the second direction are opposite. Both the first side and the second side are provided with oil guide grooves 121.

[0062] like Figure 2 As shown, oil guide grooves 121 are provided on both sides of the oil guide rib 12. The first direction is the forward rotation direction of the oil churning gear 12, and the second direction is the reverse rotation direction of the oil churning gear 12. This arrangement not only reduces the structural design complexity of the transmission, eliminating the need to consider that sufficient oil must be introduced from the oil guide grooves 121 into the bearing holes 111 when the oil churning gear 12 rotates in a predetermined direction to achieve effective lubrication of the bearings, but more importantly, this design of double-sided oil guide grooves 121 ensures that the bearings in the bearing holes 111 connected to the oil guide grooves 121 are effectively lubricated during both forward and reverse rotation of the transmission.

[0063] When the transmission is used in a vehicle, the bearings in the bearing holes 111, which are connected to the oil guide grooves 121, can be effectively lubricated whether the vehicle is moving forward or reversing. In other words, under various operating conditions, as long as the oil churning gear 12 can agitate the oil, the oil can splash onto the oil guide ribs 12 and enter the bearing holes 111 through the oil guide grooves 121 on the oil guide ribs 12 to lubricate the bearings, reducing the risk of dry friction and high-temperature erosion of the bearings.

[0064] The number of oil guide ribs 12 can be multiple, and multiple oil guide ribs 12 are set at intervals to guide more oil splashed in the inner cavity of the housing 1 into the bearing hole 111, so as to ensure sufficient and effective lubrication of the bearing.

[0065] Due to the spatial relationship between the bearing bore 111 to be lubricated and the oil stirring gear 12, and the requirement for lightweight housing 1, in some embodiments, such as Figure 1 The oil guide rib 12 includes two sub-ribs, namely the first sub-rib 123 and the second sub-rib 124. The first sub-rib 123 and the second sub-rib 124 are arranged in the circumferential direction of the bearing hole 111. The first notch 112 includes two sub-notches, namely the first sub-notch 1121 and the second sub-notch 1122. The oil guide groove 121 at the end of the first sub-rib 123 is connected to the bearing hole 111 through the first notch 112. The oil guide groove 121 at the end of the second sub-rib 124 is connected to the bearing hole 111 through the second notch 113.

[0066] Both the first sub-rib 123 and the second sub-rib 124 can have oil guide grooves 121 on both sides, or they can have oil guide grooves 121 on one side. The specific setting depends on the actual situation, such as whether the oil stirred up by the oil stirring gear 12 can splash to both sides of each oil guide rib 12.

[0067] In some embodiments, such as Figure 5As shown, the transmission includes a main shaft 3, a countershaft 5, and a differential 8, as well as a first gear 4, a second gear 6, a third gear 7, and a fourth gear 81. The first gear 4 is fixedly mounted on the main shaft 3, the second gear 6 and the third gear 7 are fixedly mounted on the countershaft 5, and the fourth gear 81 is mounted on the housing of the differential 8. The first gear 4 and the second gear 6 mesh, and the third gear 7 and the fourth gear 81 mesh. The transmission receives power from a power source, such as an engine or an electric motor. The power is input from the main shaft 3 and sequentially passes through the first gear 4, the second gear 6, the countershaft 5, the third gear 7, the fourth gear 81, and the half-shaft gears of the differential 8 before being output to both wheels.

[0068] The bottom of the inner cavity of housing 1 is suitable for holding oil. The differential 8 is located at the bottom of the inner cavity of housing 1. Part of the teeth of the fourth gear 81 are suitable for being immersed below the surface of the oil. The countershaft 5 is located on one side of the differential 8, and the main shaft 3 is located above the countershaft 5 and diagonally above the differential 8. When the fourth gear 81 acts as the oil stirring gear 12, the bearing hole 111 of the main shaft 3 is far from the differential 8 and is relatively deep. The inner wall of housing 1 is provided with annular protrusions 11. The outer ring of the first bearing is interference-fitted with the inner side of the annular protrusions 11, and the inner ring of the bearing is interference-pressed onto the journal at the end of the main shaft 3. The oil guide rib 12 includes two sub-ribs, namely a first sub-rib 123 and a second sub-rib 124, which are arranged circumferentially in the bearing hole 111. The first notch 112 includes two sub-notches, namely a first sub-notch 1121 and a second sub-notch 1122. The oil guide groove 121 at the end of the first sub-rib 123 communicates with the bearing hole 111 through the first notch 112, and the oil guide groove 121 at the end of the second sub-rib 124 communicates with the bearing hole 111 through the second notch 113. The top of 23 is flush with the housing surface 13. The bottom of the first sub-rib 123 extends to the outer side of the first bearing mounting seat. Both sides of the first sub-rib 123 are provided with oil guide grooves 121. The side of the second sub-rib 124 away from the first sub-rib 123 is provided with oil guide grooves 121. The side of the second sub-rib 124 near the first sub-rib 123 is blocked by the first gear 4, so the oil stirred up by the fourth gear 81 cannot splash to this side. Therefore, the side of the second sub-rib 124 near the first sub-rib 123 is not provided with oil guide grooves 121.

[0069] In this embodiment of the transmission, when the fourth gear 81 rotates in the first direction, for example... Figure 5 As shown, in a clockwise direction, the splashed oil falls onto the oil guide groove 121 on the side facing the first direction. The oil in the oil guide groove 121 enters the bearing hole 111 where the first bearing of the main shaft 3 is located, lubricating the first bearing. When the fourth gear 81 rotates in the second direction, for example... Figure 5In the counterclockwise direction shown, the oil can splash onto the first sub-rib 123 and the second sub-rib 124 simultaneously. The oil in the oil guide groove 121 on the second sub-rib 124 enters the bearing hole 111 where the first bearing is located through the second notch 113. The oil in the oil guide groove 121 on the side of the first sub-rib 123 near the second sub-rib 124 enters the bearing hole 111 where the first bearing is located through the first notch 112, so that the first bearing is more fully lubricated.

[0070] This application also proposes a vehicle that includes the transmission of any of the above embodiments. The vehicle has all the beneficial technical effects of the above transmission, which will not be described in detail here.

[0071] In the description of this specification, references to terms such as "specific embodiment," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0072] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A housing for use in a transmission, characterized in that, The housing is equipped with: Bearing bore, used for mounting bearings; An oil guide rib is provided on the inner wall of the housing. The oil guide rib is located on the outer side of the upper half of the bearing hole. The oil guide rib is inclined relative to the horizontal direction. The end of the oil guide rib away from the inner wall of the housing is provided with an oil guide groove. The oil splashed in the housing can splash to the oil guide groove and flow into the bearing hole through the oil guide groove.

2. The housing according to claim 1, characterized in that, The oil guide groove extends along the extension direction of the end of the oil guide rib away from the inner wall of the box, and the end of the oil guide rib away from the inner wall of the box is arc-shaped.

3. The housing according to claim 2, characterized in that, The center of the arc is located on the side of the oil guide groove away from the inner wall of the box.

4. The housing according to claim 1, characterized in that, The cross-section of the oil guide groove is fan-shaped or rectangular.

5. The housing according to any one of claims 1 to 4, characterized in that, The inner wall of the housing is provided with an annular protrusion, the inner side of which forms the bearing hole. The protrusion has a first notch, and the oil guide groove and the bearing hole are connected through the first notch; and / or, The protrusion has a second notch that extends through the radial inner side and the radial outer side of the protrusion, and the second notch is located at the bottom of the protrusion.

6. The housing according to claim 5, characterized in that, The first notch extends from the end face of the protrusion to the inner wall of the housing, and the bottom end of the oil guide rib extends to the radial outer side of the protrusion.

7. The housing according to claim 6, characterized in that, The housing has a mating surface, the top end face of the oil guide rib is flush with the mating surface, and / or the oil guide rib is a flat plate.

8. A transmission, characterized in that, Includes the housing as described in any one of claims 1 to 7.

9. The transmission according to claim 8, characterized in that, It includes an oil stirring gear, which is rotatably disposed in the housing. The oil guide rib has a first side side, and the oil stirred up by the oil stirring gear can splash onto the first side side. The oil guide groove is formed on the first side side.

10. A vehicle, characterized in that... Includes the transmission as described in claim 8 or 9.

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