CN118391426A - Power assembly's installation box, power assembly and have its vehicle - Google Patents

Abstract

The invention discloses a power assembly mounting box, a power assembly and a vehicle with the power assembly, which comprises the following components: the box body is provided with a first cavity, a second cavity and a shaft hole communicated with the first cavity and the second cavity, and the shaft hole is suitable for penetrating through the rotating shaft; the oil seal is used for separating oil in the first cavity from oil in the second cavity by filling a gap between the outer peripheral surface of the rotating shaft and the inner wall of the shaft hole; the oil seal is provided with a first surface for isolating the first cavity and a second surface for isolating the second cavity, and a cavity is defined between the first surface and the second surface so as to contain oil exuded from the first cavity or the second cavity. The installation box body of the power assembly adopts the oil seals to divide the cavities and effectively seal the cavities, so that oil channeling is avoided.

Description

Power assembly's installation box, power assembly and have its vehicle

Technical Field

The invention relates to the field of vehicles, in particular to a power assembly mounting box, a power assembly and a vehicle.

Background

With the development of the automobile industry and the improvement of the living standard of people, the demands of users on large-size automobile types such as off-road and pick-up cards are gradually increased, however, in the related art, the lubrication of the power assembly of most large-size vehicles adopts a single-cavity scheme, such as a transmission lubrication cavity, when the vehicles run on uneven roads, the lubrication oil in the cavity possibly flows to one direction, so that the lubrication efficiency of the power assembly is low, even the lubrication oil is sucked up, the efficiency and the torque output capacity of the power assembly are low, the gradient and the wild efficiency of the vehicles are low, and in some technologies, the split cavity scheme adopted by the power assembly is influenced by the rotation of a power output shaft, and effective sealing and mutual oil channeling are difficult to be carried out.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art.

Therefore, an object of the present invention is to provide a mounting box of a power assembly, wherein the mounting box of the power assembly adopts a split cavity between oil seals and is effectively sealed, so as to avoid oil channeling.

To this end, an object of the present invention is to propose a powertrain having a mounting case of the above-described powertrain.

To this end, an object of the invention is to propose a vehicle.

In order to achieve the above object, an embodiment of a first aspect of the present invention provides a mounting case of a powertrain, including: the box body is provided with a first cavity, a second cavity and a shaft hole communicated with the first cavity and the second cavity, and the shaft hole is suitable for being penetrated by the rotating shaft; the oil seal is used for separating oil in the first cavity from oil in the second cavity by filling a gap between the rotating shaft and the inner wall of the shaft hole; the oil seal is provided with a first surface for isolating the first cavity and a second surface for isolating the second cavity, and a cavity is defined between the first surface and the second surface so as to contain oil exuded from the first cavity or the second cavity.

According to the mounting box body of the power assembly, through the arrangement of the first cavity and the second cavity, different oil products are used by the double cavities, the problems of different postures of lubrication and oil absorption of the power assembly are effectively solved, the output capacity and the assembly efficiency of the power assembly are guaranteed, the wild property and the slope generating rate of the power assembly are improved, meanwhile, the second cavity and the first cavity are divided into the cavities through the oil seal, when the power assembly works across the rotating shaft, lubricating oil cannot flow from one cavity to the other cavity, the risks of mutual pollution of the two oil products and failure of the assembly are reduced, and even if gaps exist between the oil seal and the rotating shaft, the oil enters the cavity instead of entering the other cavity, and the probability of mutual oil channeling is further reduced.

According to some embodiments of the invention, the oil seal comprises a plurality of split oil seals which are arranged at intervals along the axial direction of the rotating shaft, and a cavity is defined between two adjacent split oil seals.

According to some embodiments of the invention, the oil seal is an integral oil seal comprising a connecting portion connecting the first and second faces together, and defining a cavity therebetween.

According to some embodiments of the invention, the connecting portion includes a third face near the rotating shaft and a fourth face near the inner wall of the shaft hole, the third face and the fourth face being spaced apart in a direction perpendicular to the axial direction of the rotating shaft.

According to some embodiments of the invention, the tank body is provided with at least one vent hole penetrating through the wall of the shaft hole, one end of the vent hole is communicated with the cavity, and the other end of the vent hole is communicated with the atmosphere.

According to some embodiments of the invention, the case body is provided with a plurality of ventilation holes, which are arranged at intervals along the circumferential direction and/or the axial direction of the rotation shaft.

According to some embodiments of the present invention, the oil seal includes an outer ring section, an inner ring section, and a connecting section, the outer ring section is abutted against an inner wall of the shaft hole, the inner ring section is abutted against an outer circumferential surface of the rotating shaft, and the connecting section is connected with the outer ring section and the inner ring section, respectively; the outer and inner ring segments extend from the first or second face in a direction away from the cavity.

According to some embodiments of the invention, the oil seal further comprises: the framework is coated in the outer ring section and the connecting section and is used for supporting the outer ring section and the connecting section.

According to some embodiments of the invention, the oil seal comprises an elastic ring sleeve, wherein the elastic ring sleeve is sleeved on one surface of the inner ring section, which is opposite to the rotating shaft, and applies inward pressure to the inner ring section through self elastic deformation so as to compress the inner ring section on the outer circumferential surface of the rotating shaft.

According to some embodiments of the invention, the inner circumferential surface of the inner ring section is provided with an oil return sharp corner, the oil return sharp corner extends along the circumferential direction of the rotating shaft, and an oil return line is configured on one side of the rotating shaft in the axial direction of the rotating shaft and extends along the circumferential direction of the rotating shaft.

According to some embodiments of the invention, a stop boss is arranged on the inner wall of the shaft hole, the stop boss is arranged between the oil seal and the first cavity, and the first surface of the oil seal is stopped against one side of the stop boss, which is opposite to the first cavity; and/or the stop boss is arranged between the oil seal and the second cavity, and the second surface of the oil seal is stopped against one side of the stop boss, which is back to the second cavity.

According to some embodiments of the invention, the stop boss has a disassembly hole therethrough along its axial direction.

According to some embodiments of the present invention, the tank body includes a first tank body, a second tank body, and a third tank body, which are sequentially arranged in a front-rear direction of the vehicle; at least one part of the first cavity is constructed on the second box body, the shaft hole and the second cavity are constructed on the first box body, and the oil seal is arranged on the first box body; or at least a part of the first cavity is constructed on the second box body, the shaft hole is constructed on the second box body, the second cavity is constructed on the first box body, and the oil seal is arranged on the second box body.

In order to achieve the above object, an embodiment of a second aspect of the present invention provides a power assembly including a mounting case of the power assembly of the above embodiment; the rotating shaft penetrates through the shaft hole, so that the first end of the rotating shaft is arranged in the first cavity, and the second end of the rotating shaft is arranged in the second cavity.

According to the power assembly provided by the embodiment of the invention, by arranging the double-cavity structure of the first cavity and the second cavity, different oil products are used for the double-cavity structure, the problems of different postures of lubrication and oil absorption of the power assembly are effectively solved, the output capacity and the assembly efficiency of the power assembly are ensured, the wild property and the slope increasing rate of the power assembly are improved, meanwhile, the second cavity and the first cavity are separated into cavities through the oil seal, lubricating oil cannot flow from one cavity to the other cavity when the power assembly works across the rotating shaft, the risks of mutual pollution of the two oil products and failure of the assembly are reduced, and even if a gap exists between the oil seal and the rotating shaft, the oil can enter the cavity instead of entering the other cavity, and the probability of mutual oil channeling is further reduced.

According to some embodiments of the invention, the powertrain further comprises: the differential mechanism is arranged in the second cavity and is provided with a first bevel gear which is coaxially arranged with the differential mechanism, a second bevel gear which is coaxially arranged with the differential mechanism is arranged at the second end of the rotating shaft, and the first bevel gear is meshed with the second bevel gear.

According to some embodiments of the invention, the powertrain further comprises: the driving motor is arranged in the first cavity, and a motor shaft of the driving motor is in transmission connection with the rotating shaft; the generator is arranged in the first cavity, and a motor shaft of the generator is suitable for being in transmission connection with an output shaft of the engine; and the rotating shaft is in transmission connection with an output shaft of the engine through the clutch.

In order to achieve the above object, an embodiment of a third aspect of the present invention proposes a vehicle including the powertrain of the above embodiment.

According to the vehicle provided by the embodiment of the invention, by arranging the double-cavity structure of the first cavity and the second cavity, the double-cavity uses different oil products, the problems of different postures of lubrication and oil absorption of the power assembly are effectively solved, the output capacity and the assembly efficiency of the power assembly are ensured, the wild property and the slope increasing rate of the power assembly are improved, meanwhile, the second cavity and the first cavity are separated into cavities through the oil seal, the lubricating oil cannot flow from one cavity to the other cavity when the power assembly works across the rotating shaft, the risks of mutual pollution of the two oil products and failure of the assembly are reduced, and even if a gap exists between the oil seal and the rotating shaft, the oil liquid can enter the cavity instead of entering the other cavity, and the probability of mutual oil channeling is further reduced.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic view of a structure of a mounting case according to an embodiment of the present invention;

Fig. 2 is a cross-sectional view of a mounting case according to an embodiment of the present invention;

FIG. 3 is an enlarged partial view of area A of FIG. 2;

fig. 4 is a schematic structural view of a first tank body to which the tank is mounted according to an embodiment of the present invention;

Fig. 5 is a schematic structural view of another view of the first tank body to which the tank is mounted according to the embodiment of the present invention;

FIG. 6 is an enlarged partial view of region B of FIG. 5;

Fig. 7 is an exploded view of the mounting case according to an embodiment of the present invention;

FIG. 8 is a schematic transmission diagram of a powertrain according to an embodiment of the present invention;

fig. 9 is a schematic view of a structure of an oil seal of a mounting case according to an embodiment of the present invention.

Reference numerals: installing a box body 10; a case body 1; a second cavity 2; a shaft hole 3; a stopper boss 31; a disassembly hole 311; a first cavity 4; a rotating shaft 5; a second bevel 51; a vent 6; an oil seal 7; an elastic seal 71; an outer ring segment 711; an inner ring segment 712; return angle 7121; a connection section 713; a skeleton 72; an elastic collar 73; a bushing 8; a first tank body 100; a second tank body 200; a third tank body 300; a differential 111; a first umbrella tooth 1111; a driving motor 400; a generator 500; a clutch 720; a bearing 12; a cavity 13.

Detailed Description

Embodiments of the present invention will be described in detail below, by way of example with reference to the accompanying drawings.

In the description of the present invention, 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", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

In the description of the present invention, "plurality" means two or more.

A mounting case 10 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

As shown in fig. 1 to 6, the mounting case 10 of the embodiment of the present invention includes: a box body 1 and an oil seal 7.

The case body 1 is provided with a first cavity 4, a second cavity 2 and a shaft hole 3 communicating the first cavity 4 and the second cavity 2, the second cavity 2 and the first cavity 4 can be arranged along the front-rear direction of the vehicle, the shaft hole 3 is suitable for passing through a rotating shaft 5, for example, the rotating shaft 5 is arranged in the first cavity 4 and extends into the second cavity 2 through the shaft hole 3, an oil seal 7 can be arranged between the rotating shaft 5 and the inner wall of the shaft hole 3, and the gap between the rotating shaft 5 and the inner wall of the shaft hole 3 is filled to separate oil in the second cavity 2 and oil in the first cavity 4. Wherein, the outer peripheral surface of the oil seal 7 is in sealing fit with the inner wall of the shaft hole 3, and the oil seal 7 is provided with a first surface for isolating the first cavity 4 and a second surface for isolating the second cavity 2, and a cavity 13 is defined between the first surface and the second surface so as to accommodate oil exuded from the first cavity 4 or the second cavity 2.

In the embodiment, the second cavity 2 and the first cavity 4 are communicated through the shaft hole 3, and the second cavity 2 and the first cavity 4 are arranged along the front-rear direction of the vehicle, wherein the second cavity 2 can be used for installing the differential 111, the rotating shaft 5 extends along the front-rear direction of the vehicle, the rotating shaft 5 is installed in the first cavity 4 and extends into the second cavity 2 through the shaft hole 3, the oil seal 7 is installed between the rotating shaft 5 and the inner wall of the shaft hole 3, and the oil in the second cavity 2 and the oil in the first cavity 4 are separated by filling a gap between the rotating shaft 5 and the inner wall of the shaft hole 3.

The second cavity 2 and the first cavity 4 can be separated by arranging the oil seal 7 and the rotating shaft 5, oil in the second cavity 2 is not easy to flow into the first cavity 4 through the shaft hole 3, and oil in the first cavity 4 is not easy to flow into the second cavity 2 through the shaft hole 3, so that when a vehicle goes up a steep slope, the second cavity 2 is ensured to store lubricating oil, and the differential 111 and the gear are lubricated; when the vehicle is on a steep slope, the first cavity 4 is guaranteed to store lubricating oil, and the lubricating oil is prevented from flowing into the front end completely to generate a suction risk, so that the second cavity 2 and the first cavity 4 are guaranteed to have a certain oil amount under more pose of the vehicle, and the functions of lubricating the mounting box 10 and the like are met.

In addition, different lubricating oil can be used for the second cavity 2 and the first cavity 4, for example, low-viscosity lubricating oil is used for the second cavity 2, so that the oil stirring loss of gears and motors is reduced, the running efficiency and the transmission efficiency of parts are improved under the condition that the reliability of the gears and the motors is ensured, and the wild property and the slope rate of the mounting box 10 are improved; the high-torque high-viscosity lubricating oil is used for the first cavity 4, and because the transmission structure of the differential 111 is stressed greatly, the high-torque high-viscosity lubricating oil can be used for improving the wear-resistant compression-resistant torque output capacity of the gear and the efficiency of the assembly, so that the working requirements of different parts of the two cavities are met in a diversified mode, the installation box 10 can work normally under various postures, the oil seal 7 and the rotating shaft 5 are matched to effectively prevent oil channeling of the lubricating oil of the second cavity 2 and the first cavity 4, and the risks of mutual pollution of two oil products and failure of the assembly are reduced.

According to the mounting box 10 provided by the embodiment of the invention, by arranging the double-cavity structure of the second cavity 2 and the first cavity 4, different oil products are used by the double-cavity structure, the problems of different postures of lubrication and oil absorption of the hydraulic pump of the power assembly are effectively solved, the output capacity and the assembly efficiency of the power assembly are ensured, the wild property and the slope rate of the power assembly are improved, meanwhile, the second cavity 2 and the first cavity 4 are divided into cavities through the oil seal 7, the lubricating oil cannot flow from one cavity to the other cavity when the power assembly works across the rotating shaft 5, the risks of mutual pollution and failure of the two oil products are reduced, and even if a gap exists between the oil seal 7 and the rotating shaft 5, the oil enters the cavity 13 instead of entering the other cavity, and the probability of mutual oil channeling is further reduced.

In some embodiments, as shown in fig. 1 and 2, the oil seal 7 includes a plurality of split oil seals arranged at intervals along the axial direction of the rotating shaft 5, and a cavity 13 is defined between two adjacent split oil seals, each oil seal 7 extending along the circumferential direction of the rotating shaft 5.

In the embodiment, a plurality of components of a whole that can function independently oil blanket set up along the circumference interval of pivot 5, adopt a plurality of components of a whole that can function independently oil blanket can effectively promote two cavitys leakproofness of second cavity 2 and first cavity 4, prevent better that the different lubricating oil of second cavity 2 and first cavity 4 from scurriing the oil, effectively reduce two kinds of oil mutual pollution and the risk of assembly inefficacy.

In some embodiments, as shown in fig. 2, the case body 1 is provided with at least one vent hole 6 penetrating the wall of the shaft hole 3, one end of the vent hole 6 communicates with the cavity 13, and the other end of the vent hole 6 communicates with the atmosphere.

In the embodiment, because the working temperatures and pressures of the two cavities of the second cavity 2 and the first cavity 4 are different, the vent hole 6 is added, the cavity 13 is ensured to be communicated with the atmosphere, the air pressure balance of the two cavities can be effectively realized, and the damage, failure or displacement of the oil seal 7 is prevented, so that oil leakage or oil channeling between the two cavities of the second cavity 2 and the first cavity 4 is caused.

In addition, when one of the first surface and the second surface is damaged and leaks oil, the oil can flow into the cavity 13 and is discharged into the atmosphere through the vent hole 6 communicated with the cavity 13, and the other surface is not influenced or is less influenced, so that the mutual mixing of the oil between the first cavity 4 and the second cavity 2 can be more effectively avoided, and the purity of the oil in each of the first cavity 4 and the second cavity 2 is ensured.

In some embodiments, as shown in fig. 2, the tank body 1 is provided with a plurality of ventilation holes 6, and the plurality of ventilation holes 6 are arranged at intervals in the circumferential direction and/or the axial direction of the rotation shaft 5, that is, each cavity 13 communicates with the atmosphere through the plurality of ventilation holes 6.

In the embodiment, the plurality of ventilation holes 6 are arranged at intervals along the circumferential direction of the rotating shaft 5, or the plurality of ventilation holes 6 are arranged at intervals along the axial direction and the circumferential direction of the rotating shaft 5, so that the ventilation efficiency of each cavity 13 and the atmosphere is higher, the air pressure of the two cavities of the second cavity 2 and the first cavity 4 can be ensured to be balanced rapidly, and the probability of failure or displacement of the oil seal 7 is reduced.

In some embodiments, as shown in fig. 2, the oil seal 7 is an integral oil seal, the oil seal 7 including a connecting portion that connects the first face and the second face integrally and defines the cavity 13.

In the embodiment, the first face and the second face are fixed in the relative positions by the connecting portions to improve the degree of fit of the rotary shaft 5 and the oil seal 7. And, the oil blanket 7 can be dismantled and assembled in step, improves dismouting efficiency, and wherein, oil blanket 7 can the components of a whole that can function independently earlier set up, then connect into a whole through extra connecting portion.

In some embodiments, as shown in fig. 2, the first surface and the second surface are integrally formed with the connecting portion, where the connecting portion may be ribs disposed at intervals.

In the embodiment, through first face, second face and connecting portion integrated into one piece to when installing oil blanket 7, support first face and second face through connecting rod 9, can reduce part quantity, reduce assembly process, thereby improve installation effectiveness.

In the embodiment, the connecting portion includes a third face near the rotation shaft 5 and a fourth face near the inner wall of the shaft hole 3, the third face and the fourth face being arranged at intervals in a direction perpendicular to the axial direction of the rotation shaft 5.

In some embodiments, as shown in fig. 6, the inner wall of the shaft hole 3 is provided with a stop boss 31, the stop boss 31 is between the oil seal 7 and the first cavity 4, and the first surface of the oil seal 7 is stopped against the side of the stop boss 31 facing away from the first cavity 4.

In some embodiments, as shown in fig. 6, the stop boss 31 is between the oil seal 7 and the second cavity 2, and the second face of the oil seal 7 is stopped against the side of the stop boss 31 facing away from the second cavity 2.

That is, the stopper boss 31 is located between the first cavity 4 and the second cavity 2 in the axial direction of the shaft hole 3, and the oil seal 7 is stopped against the side of the stopper boss 31 facing away from the second cavity 2.

In the embodiment, the stop boss 31 on the inner wall of the shaft hole 3 plays a role in supporting the oil seal 7, plays a certain role in positioning the installation of the oil seal 7, and reduces the installation difficulty; and on the basis of not increasing the external axial dimension of the shaft hole 3, the stop boss 31 can reduce the probability of displacement of the oil seal 7 when the power assembly 10 works.

In some embodiments, as shown in fig. 6, the stop boss 31 has a disassembly hole 311 therethrough in an axial direction thereof. Through the setting of dismantling hole 311, be convenient for follow-up dismantlement to bearing 12 between pivot 5 and the shaft hole 3.

In some embodiments, as shown in fig. 3, the oil seal 7 includes: an elastic seal 71, a skeleton 72, an elastic collar 73.

The elastic sealing member 71 includes an outer ring section 711, an inner ring section 712, and a connecting section 713, the outer ring section 711 being connected to an inner wall of the shaft hole 3, the inner ring section 712 being connected to an outer peripheral surface of the rotary shaft 5, the connecting section 713 being connected to the outer ring section 711 and the inner ring section 712, respectively; the skeleton 72 is wrapped in the outer ring section 711 and the connecting section 713 for supporting the outer ring section 711 and the connecting section 713.

In the embodiment, the outer ring section 711, the inner ring section 712 and the connecting section 713 of the elastic sealing member 71 enable the structure of the elastic sealing member 71 to be in a U shape, so that the elasticity of the oil seal 7 is ensured; the framework 72 is coated in the outer ring section 711 and the connecting section 713 and is used for supporting the outer ring section 711 and the connecting section 713 to ensure the supporting force of the oil seal 7, wherein the outer ring section 711 and the shaft hole 3 can be in interference fit so as to ensure the tightness between the inner walls of the outer ring section 711 and the shaft hole 3; when the oil seal 7 is installed on the rotating shaft 5, the elastic ring sleeve 73 applies elastic force to the inner ring section 712, and the inner ring section 712 is pressed on the outer circumferential surface of the rotating shaft 5, so that the elastic sealing piece 71 is pressed on the rotating shaft 5, and tightness between the oil seal 7 and the rotating shaft 5 is ensured.

In some embodiments, as shown in fig. 1-3, the oil seal 7 is a plurality of oil seals arranged at intervals along the axial direction of the rotating shaft 5; two adjacent oil seals 7 constitute a pair, and for the two oil seals 7 in the pair, the outer ring section 711 and the inner ring section 712 of each oil seal 7 extend from the connecting section 713 in a direction away from the other oil seal 7.

In the embodiment, the connecting section 713 of each oil seal 7 extends in the radial direction of the rotation shaft 3, the outer ring section 711 extends in the axial direction of the rotation shaft 3 in a direction away from the other oil seal 7, and the inner ring section 712 extends in the axial direction of the rotation shaft 3 in a direction away from the other oil seal 7 to improve the structural strength of the oil seal 7.

In some embodiments, as shown in fig. 9, the inner circumferential surface of the inner ring segment 712 is provided with an oil return sharp corner 7121, the oil return sharp corner 7121 extends along the circumferential direction of the rotating shaft 5, the oil return sharp corner 7121 is configured with an oil return line at one axial side of the rotating shaft 5, the oil return line extends along the circumferential direction of the rotating shaft 5, and the oil return lines of the oil return sharp corners 7121 of two adjacent oil seals 7 may be oppositely arranged.

Through setting up return angle 7121 and oil return line, at pivot 5 for the pivoted in-process of oil blanket 7, the fluid in the first cavity 4 is more easy to flow back in the first cavity 4 when moving to return angle 7121 department, and the fluid in the second cavity 2 is more easy to flow back in the second cavity 2 when moving to return angle 7121 department to reduce the oil leak probability.

In some embodiments, as shown in fig. 2, the rotating shaft 5 is supported on the box body 1 through a bearing 12, the bushing 8 is sleeved on the rotating shaft 5 and is abutted against the bearing 12 in the axial direction of the rotating shaft 5, and the oil seal 7 is sleeved on the bushing 8 and is arranged with the bearing 12 along the axial direction of the rotating shaft 5.

In the embodiment, the bushing 8 is sleeved between the rotating shaft 5 and the oil seal 7, so that lubricating oil in the second cavity 2 and the first cavity 4 is further prevented from channeling from one cavity to the other, and the risks of mutual pollution of the two oil products and failure of the assembly are reduced. And the bushing 8 may locate the bearing 12.

In some embodiments, as shown in fig. 7, the tank body 1 includes a first tank body 100, a second tank body 200, and a third tank body 300.

The first, second and third tank bodies 100, 200, 300 are sequentially arranged in the front-rear direction of the vehicle; wherein at least a portion of the first cavity 4 is configured in the second tank body 200, for example, the first cavity 4 is configured in the first tank body 100, the second tank body 200, and the third tank body 300. The second chamber 2 is constructed in the first tank body 100. The shaft hole 3 is constructed in the first casing body 100, the oil seal 7 is mounted in the first casing body 100, or the shaft hole 3 is constructed in the second casing body 200, and the oil seal 7 is mounted in the second casing body 200.

In the embodiment, the first, second and third tank bodies 100, 200 and 300 are sequentially arranged in the front-rear direction of the vehicle such that the overall structure of the vehicle is a longitudinally arranged structure, greatly reducing the arrangement space required for the power assembly of the vehicle.

According to the mounting box 10 provided by the embodiment of the invention, by arranging the double-cavity structure of the second cavity 2 and the first cavity 4, different oil products are used by the double-cavity structure, the problems of different postures of lubrication and oil absorption of the hydraulic pump of the power assembly are effectively solved, the output capacity and the assembly efficiency of the power assembly are ensured, the wild property and the slope rate of the power assembly are improved, meanwhile, the second cavity 2 and the first cavity 4 are divided into cavities through the oil seal 7, the lubricating oil cannot flow from one cavity to the other cavity when the power assembly works across the rotating shaft 5, the risks of mutual pollution and failure of the two oil products are reduced, and even if a gap exists between the oil seal 7 and the rotating shaft 5, the oil enters the cavity 13 instead of entering the other cavity, and the probability of mutual oil channeling is further reduced.

The power assembly according to the embodiment of the present invention is described below with reference to fig. 9, which includes a power assembly mounting case 10 and a rotating shaft 5, the rotating shaft 5 passing through the shaft hole 3, the rotating shaft 5 extending in the front-rear direction of the vehicle such that a first end of the rotating shaft 5 is disposed in the first cavity 4 and a second end of the rotating shaft 5 is disposed in the second cavity 2.

According to the power assembly provided by the embodiment of the invention, by arranging the double-cavity structure of the second cavity 2 and the first cavity 4, different oil products are used by the double-cavity structure, the problems of different postures of lubrication and oil absorption of the hydraulic pump of the power assembly are effectively solved, the output capacity and the assembly efficiency of the power assembly are ensured, the wild property and the slope generating rate of the power assembly are improved, meanwhile, the second cavity 2 and the first cavity 4 are separated by the oil seal 7, the lubricating oil cannot flow from one cavity to the other cavity when the power assembly works across the rotating shaft 5, the risks of mutual pollution of the two oil products and failure of the assembly are reduced, and even if a gap exists between the oil seal 7 and the rotating shaft 5, the oil liquid can enter the cavity 13, but cannot enter the other cavity, and the probability of mutual oil channeling is further reduced.

In some embodiments, the power assembly includes a differential 111, the differential 111 is mounted in the second cavity 2, the differential 111 is provided with a first bevel 1111 coaxially disposed therewith, the second end of the rotating shaft 5 is provided with a second bevel 51 coaxially disposed therewith, and the first bevel 1111 and the second bevel 51 are engaged. Thus, the mounting box 10 integrates the function of the housing of the differential 111, improves the integration level, reduces the number of parts, reduces the volume and reduces the cost.

In some embodiments, as shown in fig. 8, the powertrain further includes: drive motor 400, generator 500, and clutch 720.

The driving motor 400 is installed in the first cavity 4, for example, the driving motor 400 is installed in the third box body 300, and a motor shaft of the driving motor 400 is in transmission connection with the rotating shaft 5; the generator 500 is mounted in the first cavity 4, for example, the generator 500 is mounted in the second box body 200, and a motor shaft of the generator 500 is suitable for being in transmission connection with an output shaft of the engine; the rotating shaft 5 is selectively connected with an output shaft of the engine in a transmission manner through a clutch 720, for example, the clutch 720 is mounted on the first case body 100 and the second case body 200, and the rotating shaft 5 penetrates the first case body 100, the second case body 200 and the third case body 300.

In an embodiment, the vehicle is in an electric drive mode when the motor shaft of the drive motor 400 transmits power to the differential 111 through the shaft 5; the engine output shaft is adapted to be in driving connection with the motor shaft of the generator 500, such that the engine can drive the generator 500 to generate electricity, the amount of electricity output by the generator 500 can be stored in a power battery of the vehicle or used for providing electric energy for driving the motor 400, and the vehicle is in a range-extending mode; when the engine output shaft transmits power to the differential 111 through the clutch 720 and the rotating shaft 5, the vehicle is in a fuel mode; the vehicle is in a hybrid mode when the engine output shaft transmits power to the differential 111 through the clutch 720 and the rotation shaft 5, and the motor shaft of the drive motor 400 transmits power to the differential 111 through the rotation shaft 5.

According to the power assembly provided by the embodiment of the invention, by arranging the double-cavity structure of the second cavity 2 and the first cavity 4, different oil products are used by the double-cavity structure, the problems of different postures of lubrication and oil absorption of the hydraulic pump of the power assembly are effectively solved, the output capacity and the assembly efficiency of the power assembly are ensured, the wild property and the slope generating rate of the power assembly are improved, meanwhile, the second cavity 2 and the first cavity 4 are separated by the oil seal 7, the lubricating oil cannot flow from one cavity to the other cavity when the power assembly works across the rotating shaft 5, the risks of mutual pollution of the two oil products and failure of the assembly are reduced, and even if a gap exists between the oil seal 7 and the rotating shaft 5, the oil liquid can enter the cavity 13, but cannot enter the other cavity, and the probability of mutual oil channeling is further reduced.

A vehicle according to an embodiment of the present invention is described below with reference to fig. 9.

As shown in fig. 9, the vehicle of the embodiment of the invention includes the powertrain of the above embodiment.

According to the vehicle disclosed by the embodiment of the invention, according to the mounting box 10 disclosed by the embodiment of the invention, by arranging the double-cavity structure of the second cavity 2 and the first cavity 4, different oil products are used for the double-cavity structure, the problems of different postures of lubrication and oil absorption of the power assembly are effectively solved, the output capacity and the assembly efficiency of the power assembly are ensured, the wild property and the slope rate of the power assembly are improved, meanwhile, the second cavity 2 and the first cavity 4 are separated into cavities through the oil seal 7, the lubricating oil cannot flow from one cavity to the other when the power assembly works across the rotating shaft 5, the risks of mutual pollution of two oil products and failure of the assembly are reduced, and even if a gap exists between the oil seal 7 and the rotating shaft 5, the oil enters the cavity 13 and cannot enter the other cavity, and the probability of mutual oil channeling is further reduced.

Other constructions and operations of the mounting case 10 of the powertrain, and the vehicle according to the embodiment of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims (17)

1. A mounting case (10) for a powertrain, comprising:

The box comprises a box body (1), wherein the box body (1) is provided with a first cavity (4), a second cavity (2) and a shaft hole (3) communicated with the first cavity (4) and the second cavity (2), and the shaft hole (3) is suitable for penetrating through a rotating shaft (5);

the oil seal (7) is used for separating oil in the first cavity (4) from oil in the second cavity (2) by filling a gap between the outer peripheral surface of the rotating shaft (5) and the inner wall of the shaft hole (3);

The oil seal (7) is provided with a first surface for isolating the first cavity (4) and a second surface for isolating the second cavity (2), a cavity (13) is defined between the first surface and the second surface, and the cavity (13) is used for containing oil exuded from the first cavity (4) or the second cavity (2).

2. The mounting box (10) of the power assembly according to claim 1, wherein the oil seal (7) comprises a plurality of split oil seals which are axially spaced along the rotating shaft (5), and a cavity (13) is defined between two adjacent split oil seals.

3. The mounting case (10) of a powertrain according to claim 1, wherein the oil seal (7) is an integral oil seal including a connecting portion connecting the first face and the second face integrally, and the cavity is defined between the first face and the second face.

4. A mounting case (10) of a powertrain according to claim 3, wherein the connecting portion includes a third face near the rotating shaft and a fourth face near an inner wall of the shaft hole, the third face and the fourth face being arranged at intervals in a direction perpendicular to an axial direction of the rotating shaft (5).

5. The mounting box of a powertrain according to claim 1, characterized in that the box body (1) is provided with at least one vent hole (6) penetrating the wall of the shaft hole (3), one end of the vent hole (6) is communicated with the cavity (13), and the other end of the vent hole (6) is communicated with the atmosphere.

6. The mounting case (10) of a powertrain according to claim 5, wherein the case body (1) is provided with a plurality of the ventilation holes (6), the plurality of ventilation holes (6) being arranged at intervals in the circumferential direction and/or the axial direction of the rotating shaft (5).

7. The mounting case (10) of the power assembly according to claim 1, wherein the oil seal (7) includes an outer ring section (711), an inner ring section (712), and a connecting section (713), the outer ring section (711) being abutted against an inner wall of the shaft hole (3), the inner ring section (712) being abutted against an outer peripheral surface of the rotating shaft (5), the connecting section (713) being connected with the outer ring section (711) and the inner ring section (712), respectively;

The outer ring section (711) and the inner ring section (712) extend from the first face or the second face in a direction away from the cavity (13).

8. The mounting case (10) of a powertrain according to claim 7, wherein the oil seal (7) further includes:

-a skeleton (72), said skeleton (72) being wrapped in said outer ring section (711) and in said connecting section (713) for supporting in said outer ring section (711) and in said connecting section (713).

9. The mounting box (10) of the power assembly according to claim 7, wherein the oil seal (7) comprises an elastic ring sleeve (73), the elastic ring sleeve (73) is sleeved on one surface of the inner ring section (712) facing away from the rotating shaft (5), and the elastic ring sleeve (73) applies inward pressure to the inner ring section (712) through self elastic deformation so as to press the inner ring section (712) on the outer peripheral surface of the rotating shaft (5).

10. The mounting box (10) of the powertrain according to claim 7, wherein an oil return sharp corner (7121) is provided on an inner circumferential surface of the inner ring section (712), the oil return sharp corner (7121) extends along a circumferential direction of the rotating shaft (5), and the oil return sharp corner (7121) is configured with an oil return line on one side in an axial direction of the rotating shaft (5), and the oil return line extends along the circumferential direction of the rotating shaft (5).

11. The mounting box (10) of the power assembly according to claim 1, characterized in that a stop boss (31) is arranged on the inner wall of the shaft hole (3), the stop boss (31) is arranged between the oil seal (7) and the first cavity (4), and the first surface of the oil seal (7) is stopped against one side of the stop boss (31) facing away from the first cavity (4); and/or

The stop boss (31) is arranged between the oil seal (7) and the second cavity (2), and the second surface of the oil seal (7) is stopped against one side, opposite to the second cavity (2), of the stop boss (31).

12. The mounting case (10) of a powertrain according to claim 10, wherein the stopper boss (31) has a detachment hole (311) penetrating in an axial direction thereof.

13. The mounting case (10) of a powertrain according to any one of claims 1 to 12, wherein the case body (1) includes a first case body (100), a second case body (200), and a third case body (300), the first case body (100), the second case body (200), and the third case body (300) being arranged in order in a front-rear direction of a vehicle;

At least one part of the first cavity (4) is configured on the second box body (200), the shaft hole (3) and the second cavity (2) are configured on the first box body (100), and the oil seal (7) is mounted on the first box body (100); or alternatively

At least a part of the first cavity (4) is constructed in the second box body (200), the shaft hole (3) is constructed in the second box body (200), the second cavity (2) is constructed in the first box body (100), and the oil seal (7) is mounted in the second box body (200).

14. A powertrain, comprising:

The mounting case (10) of a powertrain according to any one of claims 1-13;

The rotating shaft (5) penetrates through the shaft hole (3), so that the first end of the rotating shaft (5) is arranged in the first cavity (1), and the second end of the rotating shaft (5) is arranged in the second cavity (2).

15. The locomotion assembly of claim 14, further comprising:

Differential mechanism (111), differential mechanism (111) install in second cavity (2), differential mechanism (111) be equipped with rather than coaxial first umbrella tooth (1111) of setting, the second end of pivot (5) be equipped with rather than coaxial second umbrella tooth (51) of setting, first umbrella tooth (1111) with second umbrella tooth (51) meshing.

16. The locomotion assembly of claim 15, further comprising:

The driving motor (400) is arranged in the first cavity (4), and a motor shaft of the driving motor (400) is in transmission connection with the rotating shaft (5);

A generator (500), the generator (500) is mounted in the first cavity (4), and a motor shaft of the generator (500) is suitable for being in transmission connection with an engine output shaft;

And the rotating shaft (5) is in transmission connection with the output shaft of the engine through the clutch (720).

17. A vehicle comprising a powertrain according to any one of claims 14-16.