Differential mechanism and vehicle

Abstract

The utility model discloses a differential mechanism and a vehicle. The differential mechanism comprises a gear shaft, a planetary gear and a differential shell. The planetary gear sleeves the gear shaft; a containing space is defined by the differential shell, at least part of the planetary gear is located in the containing space, an oil liquid channel is formed in the differential shell, the oil liquid channel penetrates through the differential shell, the oil liquid channel is used for allowing lubricating oil to pass through, and the oil liquid channel right faces the planetary gear in the radial direction of the planetary gear. According to the differential mechanism provided by the embodiment of the utility model, as the differential shell is provided with the oil channel which is over against the planetary gear, lubricating oil can directly drop on the planetary gear and the gear shaft, so that the waste of the lubricating oil caused by the splashing of the lubricating oil in the operation process of the differential mechanism is reduced, and the lubricating efficiency is improved; therefore, the lubricating effect of the gear shaft and the planetary gear is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a differential and a vehicle. Background Art

[0002] The differential is a device used to adjust the speed difference between the left and right wheels of a vehicle. In the related art, the gear shaft and planetary gear of the differential are lubricated by setting an oil guide hole on the differential housing. However, during the operation of the differential, the lubricating oil will splash to various positions in the differential, and the lubrication effect between the gear shaft and the planetary gear cannot be guaranteed, resulting in poor lubrication effect. Utility Model Content

[0003] The utility model provides a differential and a vehicle.

[0004] The differential of the embodiment of the utility model comprises:

[0005] Gear shaft;

[0006] A planetary gear, wherein the planetary gear is sleeved on the gear shaft;

[0007] A differential housing defines a housing space, at least part of the planetary gears are located in the housing space, an oil channel is provided on the differential housing, the oil channel runs through the differential housing, the oil channel is used for lubricating oil to pass through, and along the radial direction of the planetary gears, the oil channel is arranged opposite to the planetary gears.

[0008] In the differential of the embodiment of the utility model, since an oil channel facing the planetary gears is provided on the differential housing, the lubricating oil can be directly dripped onto the planetary gears and the gear shafts, which reduces the waste of lubricating oil and improves the lubrication efficiency, thereby improving the lubrication effect of the gear shafts and the planetary gears.

[0009] In some embodiments, there are multiple oil channels, and the multiple oil channels are arranged at intervals along the circumference of the differential housing.

[0010] In certain embodiments, the differential further includes a differential ring gear, wherein the differential ring gear and the differential housing enclose an installation space, wherein the installation space includes the accommodating space, and the gear shaft and the planetary gear are both disposed in the installation space.

[0011] In some embodiments, the differential ring gear includes a first connecting portion, the differential housing includes a second connecting portion connected to the first connecting portion, the first connecting portion and the second connecting portion are arranged opposite to each other, and the differential ring gear and the differential housing enclose the installation space.

[0012] In some embodiments, the differential further includes a side gear, wherein the side gear is disposed in the installation space, the side gear is meshed with the planetary gear, and a central axis of the side gear is perpendicular to a central axis of the planetary gear.

[0013] In some embodiments, the planetary gear includes a first gear and a second gear arranged opposite to the first gear, the first gear and the second gear are connected through the gear shaft, the side gear includes a third gear and a fourth gear arranged opposite to the third gear, the third gear cooperates with the differential ring gear, the fourth gear cooperates with the differential housing, the first gear and the second gear are both meshed with the third gear, and the first gear and the second gear are both meshed with the fourth gear.

[0014] In some embodiments, the third gear includes a first gear tooth and a first hub, the differential ring gear is provided with a first connecting groove, the first gear and the second gear are both meshed with the first gear tooth, and the first hub cooperates with the first connecting groove.

[0015] In some embodiments, the fourth gear includes second gear teeth and a second hub, the differential housing is provided with a second connecting groove, the first gear and the second gear are both meshed with the second gear teeth, and the second hub cooperates with the second connecting groove.

[0016] In certain embodiments, the differential housing is provided with a mounting hole, the mounting hole is located in the axial direction of the planetary gear, the mounting hole is spaced apart from the oil channel, and the gear shaft passes through the mounting hole.

[0017] The vehicle according to the embodiment of the present utility model includes the differential described in any one of the above embodiments.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 It is a structural schematic diagram of a differential according to an embodiment of the utility model from one perspective;

[0021] Figure 2 is a disassembled schematic diagram of a differential according to an embodiment of the utility model;

[0022] Figure 3 It is a structural schematic diagram of a differential in another perspective of an embodiment of the utility model;

[0023] Figure 4 yes Figure 3 A cross-sectional view of the differential in the AA direction;

[0024] Figure 5 It is a schematic plan view of a vehicle according to an embodiment of the present utility model.

[0025] Description of reference numerals:

[0026] Differential 100; gear shaft 10; planetary gear 20; differential housing 30; accommodating space 31; oil channel 32; differential ring gear 40; installation space 101; first connecting portion 41; second connecting portion 33; side gear 50; first gear 21; second gear 22; third gear 51; fourth gear 52; first gear tooth 510; first wheel hub 511; first connecting groove 42; second gear tooth 520; second wheel hub 521; second connecting groove 34; installation hole 35; vehicle 1000. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0029] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0032] See also Figure 1 and Figure 2 The differential 100 of the embodiment of the utility model comprises a gear shaft 10, a planetary gear 20 and a differential housing 30. The planetary gear 20 is sleeved on the gear shaft 10; the differential housing 30 defines a receiving space 31, at least part of the planetary gear 20 is located in the receiving space 31, and an oil channel 32 is provided on the differential housing 30, the oil channel 32 runs through the differential housing 30, and the oil channel 32 is used for lubricating oil to pass through, and the oil channel 32 is arranged opposite to the planetary gear 20 along the radial direction of the planetary gear 20.

[0033] In the differential 100 of the embodiment of the present invention, since the differential housing 30 is provided with an oil channel 32 facing the planetary gears 20, the lubricating oil can be directly dripped onto the planetary gears 20 and the gear shaft 10, which reduces the waste of lubricating oil caused by splashing of lubricating oil during the operation of the differential 100, improves the lubrication efficiency, and thus improves the lubrication effect of the gear shaft 10 and the planetary gears 20.

[0034] Specifically, the gear shaft 10 is used to support and fix the planetary gear 20 so that the planetary gear 20 can rotate around the gear shaft 10. The gear shaft 10 can be in the shape of a straight shaft, or can be set to other shapes according to requirements. The gear shaft 10 can be a solid shaft or a hollow shaft, and the material of the gear shaft 10 can be steel or alloy steel, etc., to meet different load requirements.

[0035] The planetary gear 20 is a gear sleeved on the gear shaft 10, and the planetary gear 20 is used to achieve torque distribution and speed change in the differential 100. There can be multiple planetary gears 20, and the multiple planetary gears 20 can rotate around the gear shaft 10. The tooth shape of the planetary gear 20 can be a straight tooth or a helical tooth design, which can be selected according to the specific application and performance requirements of the differential 100.

[0036] The differential housing 30 is the outer shell of the differential 100, and the accommodating space 31 of the differential housing 30 is used to accommodate the gear shaft 10, the planetary gears 20 and other components. The differential housing 30 can be a semi-enclosed structure, and the accommodating space 31 refers to the semi-enclosed space inside the differential housing 30, and at least part of the planetary gears 20 are located in this space. The differential housing 30 can be made of materials such as cast iron and cast steel to meet the requirements of strength and weight.

[0037] The manufacturing of the differential housing 30 can adopt the same material forging technology. Compared with other technologies, the forging process can maintain or even improve the strength of the differential housing 30, ensuring the structural stability of the differential housing 30. Therefore, the thickness of the differential housing 30 can be reduced to about 6 mm, which can significantly reduce the total volume of the differential housing 30. A through hole can be directly opened on the differential housing 30 to form an oil channel 32.

[0038] The oil channel 32 may be linear or curved to accommodate the internal structure of the differential housing 30 and the flow characteristics of the lubricating oil. The oil channel 32 is used to guide the lubricating oil to flow through and lubricate the planetary gears 20. When in use, the lubricating oil may drip from the oil hole of the reducer of the vehicle 1000 to the differential 100, and directly lubricate the planetary gears 20 through the oil channel 32, thereby improving the sliding friction between the gear shaft 10 and the planetary gears 20, avoiding poor lubrication of the friction pair between the gear shaft 10 and the planetary gears 20, and reducing the probability of functional failure caused by sintering between the gear shaft 10 and the planetary gears 20. Since the lubricating oil directly lubricates the planetary gears 20 through the oil channel 32, the lubricating oil realizes directional active lubrication of the planetary gears 20, so that during the operation of the differential 100, even if the lubricating oil splashes, the planetary gears 20 and the gear shaft 10 are still effectively lubricated.

[0039] See also Figure 3 In some embodiments, there are multiple oil channels 32 , and the multiple oil channels 32 are arranged at intervals along the circumference of the differential housing 30 .

[0040] In this way, the multiple oil channels 32 can allow lubricating oil to pass through from multiple directions, so that the planetary gear 20 can be fully lubricated, so that all parts of the planetary gear 20 can be lubricated by the lubricating oil. In particular, when the differential 100 is in high-speed operation, the multiple oil channels 32 can provide a more stable lubrication effect.

[0041] In addition, the plurality of oil channels 32 provided on the differential housing 30 can reduce the weight of the differential housing 30 , which is beneficial to the lightweight requirement of the vehicle 1000 .

[0042] Specifically, the number of the oil channels 32 may be two, three, four or even more, and the specific number may be determined according to the size and lubrication requirements of the differential 100. The oil channels 32 may be evenly spaced, or may be arranged according to the layout and lubrication requirements of the planetary gears 20. The radial direction of the planetary gear 20 may include multiple radial lines, and multiple oil channels 32 may be arranged corresponding to different radial lines, and multiple oil channels 32 may all be arranged directly opposite the planetary gears 20.

[0043] See also Figure 1 In some embodiments, the differential 100 further includes a differential ring gear 40 , which is enclosed with the differential housing 30 to form an installation space 101 , wherein the installation space 101 includes an accommodating space 31 , and the gear shaft 10 and the planetary gear 20 are both disposed in the installation space 101 .

[0044] In this way, by enclosing the differential ring gear 40 and the differential housing 30 to form the installation space 101, the internal structure of the differential 100 can be made more compact, and the space occupied can be reduced, thereby possibly reducing the volume of the entire differential 100. The installation space 101 can provide additional protection for the gear shaft 10 and the planetary gear 20, and reduce the adverse effects of external environmental factors on the gear shaft 10 and the planetary gear 20.

[0045] Specifically, the differential ring gear 40 can provide structural support for the differential housing 30. The installation space 101 is a spatial area defined by the differential ring gear 40 and the differential housing 30, and its function is to provide a protected installation environment for the gear shaft 10 and the planetary gear 20. The differential ring gear 40 and the differential housing 30 can be connected together by mechanical connection, such as bolt connection, welding, etc.

[0046] See also Figure 1 and Figure 2 In some embodiments, the differential ring gear 40 includes a first connecting portion 41, and the differential housing 30 includes a second connecting portion 33 connected to the first connecting portion 41. The first connecting portion 41 and the second connecting portion 33 are arranged opposite to each other, and the differential ring gear 40 and the differential housing 30 enclose an installation space 101.

[0047] In this way, the relative arrangement and connection of the first connecting part 41 and the second connecting part 33 helps to accurately locate the relative positions of the differential ring gear 40 and the differential housing 30, so that the gear shaft 10 and the planetary gear 20 can be correctly installed and aligned in the installation space 101, thereby enhancing the structural stability between the differential ring gear 40 and the differential housing 30, which is conducive to withstanding high loads and impacts.

[0048] Specifically, the first connection portion 41 is a component on the differential ring gear 40 for connecting with the differential housing 30, and the second connection portion 33 is a component on the differential housing 30 for correspondingly connecting with the first connection portion 41 of the differential ring gear 40. The first connection portion 41 may be a groove provided on the differential ring gear 40, and the second connection portion 33 may be a protrusion provided on the differential housing 30. Both the groove and the protrusion may be annular structures, and the wall surface of the groove may fit with the outer surface of the protrusion.

[0049] The first connection portion 41 and the second connection portion 33 may be connected by welding or bolting, etc. For example, the first connection portion 41 and the second connection portion 33 may be radially welded. Compared with axial welding, radial welding has higher strength and stability, and can effectively increase the rigidity of the differential 100, so that the differential 100 can have a stronger torque capacity in a smaller volume.

[0050] See also Figure 1 and Figure 2In some embodiments, the differential 100 further includes a side gear 50 , which is disposed in the installation space 101 , the side gear 50 is meshed with the planetary gear 20 , and the central axis of the side gear 50 is perpendicular to the central axis of the planetary gear 20 .

[0051] In this way, the installation space 101 can provide additional protection for the side gear 50, reducing the adverse effects of external environmental factors on the side gear 50. The meshing of the side gear 50 and the planetary gear 20 realizes the meshing transmission between the side gear 50 and the planetary gear 20, thereby realizing the function of the differential 100. In addition, the design of the vertical axis helps to achieve a compact layout in a limited space, thereby reducing the space occupied by the differential 100. In addition, the design of the vertical axis is conducive to reducing the noise and vibration during the operation of the side gear 50 and the planetary gear 20, and improving the running stability of the differential 100.

[0052] Specifically, the side gear 50 is a gear installed in the installation space 101 of the differential 100 and meshed with the planetary gear 20. The side gear 50 is connected to the wheel, and the function of the side gear 50 is to change the power transmission direction generated by the planetary gear 20 in the differential 100. Since the side gear 50 is arranged in the installation space 101 and meshed with the planetary gear 20, when the lubricating oil passes through the oil channel 32, the lubricating oil will also directly contact the side gear 50 and lubricate the side gear 50.

[0053] The central axis of the side gear 50 refers to the center line of the side gear 50 when it rotates, and the central axis of the planetary gear 20 refers to the center line of the planetary gear 20 when it rotates. The tooth shape of the side gear 50 can be straight teeth, helical teeth, or spiral teeth, etc., which can be selected according to the specific requirements and performance goals of the differential 100. The number of planetary gears 20 and side gears 50 can be multiple, which can be set according to the specific requirements and performance goals of the differential 100.

[0054] The meshing between the side gear 50 and the planetary gear 20 can be smooth meshing or non-smooth meshing. The side gear 50 and the planetary gear 20 mesh in the installation space 101 to form a mechanical connection, and transmit power through the interaction of the gear teeth.

[0055] See also Figure 1 and Figure 3 In some embodiments, there are multiple oil channels 32, some of which can be arranged opposite to the side gear 50, and other oil channels 32 can be arranged opposite to the gear shaft 10. In this way, the lubricating oil can directly lubricate the side gear 50, the gear shaft 10 and the planetary gear 20 at the same time, thereby increasing the coverage of lubrication.

[0056] See also Figure 2 and Figure 4In some embodiments, the planetary gear 20 includes a first gear 21 and a second gear 22 arranged opposite to the first gear 21, the first gear 21 and the second gear 22 are connected through a gear shaft 10, the side gear 50 includes a third gear 51 and a fourth gear 52 arranged opposite to the third gear 51, the third gear 51 cooperates with the differential ring gear 40, the fourth gear 52 cooperates with the differential housing 30, the first gear 21 and the second gear 22 are both meshed with the third gear 51, and the first gear 21 and the second gear 22 are both meshed with the fourth gear 52.

[0057] In this way, through the meshing of the first gear 21 and the second gear 22 of the planetary gear 20 with the third gear 51 and the fourth gear 52 of the side gear 50, a more stable transmission can be provided, reducing the risk of transmission interruption caused by the failure of a single gear meshing. The cooperation of the third gear 51 with the differential ring gear 40 can enhance the stability of the third gear 51 and reduce the probability of the third gear 51 having a functional failure under high speed conditions. The cooperation of the fourth gear 52 with the differential housing 30 can enhance the stability of the fourth gear 52 and reduce the probability of the fourth gear 52 having a functional failure under high speed conditions.

[0058] Specifically, the gear shaft 10 is a shaft connecting the first gear 21 and the second gear 22, and the first gear 21 and the second gear 22 can rotate around the central axis of the gear shaft 10. The third gear 51 can be meshed with one side of the first gear 21, and the fourth gear 52 can be meshed with the other side of the first gear 21. Similarly, the fourth gear 52 can be meshed with one side of the second gear 22, and the fourth gear 52 can be meshed with the other side of the second gear 22. The positions where the third gear 51 and the fourth gear 52 are meshed with the first gear 21 are different, and the positions where the third gear 51 and the fourth gear 52 are meshed with the second gear 22 are also different.

[0059] The third gear 51 and the differential ring gear 40 may be interference fit, transition fit, etc. In order to bear a larger load during the operation of the differential 100, the third gear 51 and the differential ring gear 40 may be interference fit, and the fourth gear 52 and the differential housing 30 may also be interference fit.

[0060] When the vehicle 1000 is traveling in a straight line, the gear shaft 10 rotates to drive the first gear 21 and the second gear 22 to revolve, and the third gear 51 and the fourth gear 52 meshing with the first gear 21 and the second gear 22 rotate at the same speed and in the same direction. At this time, the first gear 21 and the second gear 22 only revolve, but do not rotate, and the rotation speeds of the left and right wheels are equal to the rotation speeds of the third gear 51 and the fourth gear 52. When the vehicle 1000 is turning, the first gear 21 and the second gear 22 rotate while revolving, that is, they rotate around the gear shaft 10, causing the speed of the side gear 50 on one side to increase, while the speed of the side gear 50 on the other side to decrease, and the wheels on both sides rotate at different speeds. For example, the speed of the third gear 51 increases, and the speed of the fourth gear 52 decreases, so that the speed of the wheel connected to the third gear 51 increases, and the speed of the wheel connected to the fourth gear 52 decreases. At this time, the increased speed of the wheel on one side is equal to the reduced speed of the wheel on the other side, so that the differential 100 meets the requirement of different speeds of the wheels on both sides when the vehicle 1000 is turning.

[0061] See also Figure 2 and Figure 4 In some embodiments, the third gear 51 includes a first gear tooth 510 and a first hub 511, the differential ring gear 40 is provided with a first connecting groove 42, the first gear 21 and the second gear 22 are both engaged with the first gear tooth 510, and the first hub 511 cooperates with the first connecting groove 42.

[0062] In this way, the first gear 21 and the second gear 22 are meshed with the first gear teeth 510 to realize the transmission between the planetary gear 20 and the third gear 51. The cooperation between the first hub 511 and the first connecting groove 42 can enhance the connection stability between the third gear 51 and the differential ring gear 40, and help maintain the correct position of the third gear 51 under high speed conditions. In addition, the cooperation between the first hub 511 and the first connecting groove 42 simplifies the assembly process of the third gear 51, making the assembly faster and more accurate.

[0063] Specifically, the first gear teeth 510 are teeth on the third gear 51, and the first gear teeth 510 are used to mesh with corresponding gear teeth on the first gear 21 and the second gear 22 to transmit torque. The first hub 511 is the body part of the third gear 51, and is used to cooperate with the first connecting groove 42 of the differential ring gear 40 to fix the position of the third gear 51.

[0064] The first hub 511 and the first connecting groove 42 may be matched by interference fit, welding fit, spline fit, etc. For example, a plurality of evenly distributed spline grooves are provided on the outer circumference of the first hub 511. The groove wall of the first connecting groove 42 is provided with a plurality of splines matching the spline grooves, and the first hub 511 and the first connecting groove 42 are matched by inserting the splines into the spline grooves.

[0065] See also Figure 2 and Figure 4 In some embodiments, the fourth gear 52 includes a second gear tooth 520 and a second hub 521 , the differential housing 30 is provided with a second connecting groove 34 , the first gear 21 and the second gear 22 are both engaged with the second gear tooth 520 , and the second hub 521 cooperates with the second connecting groove 34 .

[0066] In this way, the first gear 21 and the second gear 22 are meshed with the second gear teeth 520 to realize the transmission between the planetary gear 20 and the fourth gear 52. The cooperation between the second hub 521 and the second connecting groove 34 can enhance the connection stability between the fourth gear 52 and the differential ring gear 40, and help maintain the correct position of the fourth gear 52 under high speed conditions. In addition, the cooperation between the second hub 521 and the second connecting groove 34 simplifies the assembly process of the fourth gear 52, making the assembly faster and more accurate.

[0067] Specifically, the second gear teeth 520 are teeth on the fourth gear 52, and the second gear teeth 520 are used to mesh with corresponding gear teeth on the first gear 21 and the second gear 22 to transmit torque. The second hub 521 is the body part of the fourth gear 52, and is used to cooperate with the second connecting groove 34 of the differential ring gear 40 to fix the position of the fourth gear 52.

[0068] The second hub 521 and the second connecting groove 34 may be fitted in an interference fit, a welded fit, a spline fit, etc. For example, the outer diameter of the second hub 521 is designed to be slightly larger than the size of the second connecting groove 34 to form an interference fit. During the assembly process, a press or a hydraulic device may be used to press the second hub 521 into the second connecting groove 34 until the second hub 521 completely enters the second connecting groove 34 and reaches the required interference amount.

[0069] See also Figure 2 and Figure 4 In some embodiments, the differential housing 30 is provided with a mounting hole 35 , the mounting hole 35 is located in the axial direction of the planetary gear 20 , the mounting hole 35 is spaced apart from the oil channel 32 , and the gear shaft 10 is passed through the mounting hole 35 .

[0070] Thus, the installation of the mounting hole 35 allows the gear shaft 10 to be precisely positioned in the axial direction of the planetary gear 20, ensuring the correct assembly and alignment of the gear shaft 10 and the planetary gear 20, thereby simplifying the assembly process of the differential 100. At the same time, the mounting hole 35 can provide a stable support for the gear shaft 10, thereby improving the stability of the entire differential 100.

[0071] Specifically, the mounting hole 35 is a through hole opened on the differential housing 30, which is used to provide a space for the gear shaft 10 to pass through, so as to achieve the positioning and fixing of the gear shaft 10. Since the planetary gear 20 is sleeved on the gear shaft 10, the axial direction of the planetary gear 20 is the same as the axial direction of the gear shaft 10, and the mounting hole 35 can provide accurate guidance and positioning for the gear shaft 10. The matching mode between the gear shaft 10 and the mounting hole 35 can be interference fit, bolt fixing, etc.

[0072] See also Figure 5 The vehicle 1000 of the embodiment of the utility model comprises the differential 100 of any one of the above embodiments. In the vehicle 1000, the differential 100 is used to enable the wheels of the vehicle 1000 to rotate at different speeds.

[0073] Since the vehicle 1000 includes the differential 100 described above, it at least includes all the beneficial effects of the differential 100 described above, which will not be described in detail here.

[0074] In the description of this specification, the description with reference to the terms "one embodiment", "certain embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0075] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A differential, characterized in that: The differential comprises: Gear shaft; A planetary gear, wherein the planetary gear is sleeved on the gear shaft; A differential housing defines a housing space, at least part of the planetary gears are located in the housing space, an oil channel is provided on the differential housing, the oil channel runs through the differential housing, the oil channel is used for lubricating oil to pass through, and along the radial direction of the planetary gears, the oil channel is arranged opposite to the planetary gears.

2. The differential according to claim 1, characterized in that: There are multiple oil channels, and the multiple oil channels are arranged at intervals along the circumference of the differential housing.

3. The differential according to claim 1, characterized in that: The differential further includes a differential ring gear, wherein the differential ring gear and the differential housing enclose an installation space, wherein the installation space includes the accommodating space, and the gear shaft and the planetary gear are both arranged in the installation space.

4. The differential according to claim 3, characterized in that: The differential ring gear includes a first connection portion, the differential housing includes a second connection portion connected to the first connection portion, the first connection portion and the second connection portion are arranged opposite to each other, and the differential ring gear and the differential housing enclose the installation space.

5. The differential according to claim 3, characterized in that: The differential further includes a side gear, which is disposed in the installation space and meshes with the planetary gears. The central axis of the side gear is perpendicular to the central axis of the planetary gears.

6. The differential according to claim 5, characterized in that: The planetary gear includes a first gear and a second gear arranged opposite to the first gear, the first gear and the second gear are connected through the gear shaft, the side gear includes a third gear and a fourth gear arranged opposite to the third gear, the third gear cooperates with the differential ring gear, the fourth gear cooperates with the differential housing, the first gear and the second gear are both meshed with the third gear, and the first gear and the second gear are both meshed with the fourth gear.

7. The differential according to claim 6, characterized in that: The third gear includes a first gear tooth and a first hub, the differential ring gear is provided with a first connecting groove, the first gear and the second gear are both meshed with the first gear tooth, and the first hub cooperates with the first connecting groove.

8. The differential according to claim 6, characterized in that: The fourth gear includes a second gear tooth and a second hub, the differential housing is provided with a second connecting groove, the first gear and the second gear are both meshed with the second gear tooth, and the second hub cooperates with the second connecting groove.

9. The differential according to claim 1, characterized in that: The differential housing is provided with a mounting hole, the mounting hole is located in the axial direction of the planetary gear, the mounting hole is spaced apart from the oil channel, and the gear shaft passes through the mounting hole.

10. A vehicle, characterized in that: The vehicle comprises a differential as claimed in any one of claims 1 to 9.

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