CN221401589U - Reduction gearbox shell structure of automobile - Google Patents

Abstract

The utility model provides a gearbox shell structure of an automobile, and relates to the technical field of gearbox lubrication. The housing structure comprises a housing and a first sealing baffle, wherein the housing comprises a first part and a second part, the first part and the second part are respectively provided with an input part, and the input parts can be assembled with the motor; the input part is also provided with an oil return hole through which lubricating oil can flow into the shell; the first sealing baffle is connected with the shell and can move relative to the shell to block the oil return hole. Through adopting mobilizable first sealed fender piece design, can select to close or open the oil gallery according to the actual usage condition, increase gearbox housing structure's commonality to this gearbox housing structure can satisfy the demand of multiple type car.

Description

Reduction gearbox shell structure of automobile

Technical Field

The utility model relates to the technical field of gearbox lubrication, in particular to a gearbox shell structure of an automobile.

Background

With the development of new energy electric vehicles, the use of new energy electric vehicles has more and more scenes, and in order to pursue extreme power performance, front and rear axle electric driving has become a development trend. In particular to an off-road vehicle, high output torque of front and rear axle electric drive is superimposed, and the limit climbing capacity and the off-road performance of the off-road vehicle are improved.

At present, the electric drive of the front axle and the rear axle of the related new energy automobile is used as a core part of the off-road electric vehicle, and extremely strong output torque is provided for the vehicle. Boundary conditions such as cabin mountability and arrangement posture of the front axle electric drive and the rear axle electric drive are inconsistent, so that the front axles and the rear axles of most four-wheel drive electric vehicles are different electric drives, the types of parts are increased, and the development cost of the reduction gearbox shell is obviously increased.

Disclosure of utility model

The utility model provides a gearbox shell structure of an automobile, which aims to solve the problem of how to improve the universality of the gearbox shell so as to meet the requirements of different automobile types.

The embodiment of the utility model provides a reduction gearbox shell structure of an automobile, which comprises a shell, wherein the shell comprises a first part and a second part, the first part and the second part are respectively provided with an input part, and the input parts can be assembled with a motor; the input part is also provided with an oil return hole through which lubricating oil can flow into the shell; the first sealing baffle piece is connected with the shell and can move relative to the shell to block the oil return hole.

Further, the first sealing baffle is detachably connected with the shell, and is provided with a sealing ring for sealing the oil return hole.

Further, the second part is provided with an output part, the input part and the output part are respectively positioned at two ends of the second part, and part of the oil return holes are close to one side of the output part.

Further, part of the oil return holes are close to one side of the output part and are arranged at intervals.

Further, a sealing groove and a positioning spigot are arranged on the surface of the input part of the second part, which is assembled and connected with the motor.

Further, the housing also has a second sealing stop detachably connected to the housing, the second sealing stop being used to fill the sealing groove and the locating spigot.

Further, the outer surface of the second part is provided with a bracket, which is movable relative to the housing, for connection with the housing of the motor vehicle.

Further, the bracket is detachably connected with the shell.

Further, a plurality of groups of flanges and a plurality of bolt connection points are arranged on the shell.

Further, the housing is provided with a plurality of threaded holes and a plurality of suspension bracket mounting points, and the plurality of threaded holes are used for mounting the wire harness bracket in different directions; and a plurality of suspension bracket mounting points are used for mounting suspension brackets with different structures. The utility model provides a gearbox shell structure of an automobile, and relates to the technical field of gearbox lubrication. The housing structure comprises a housing and a first sealing baffle, wherein the housing comprises a first part and a second part, the first part and the second part are respectively provided with an input part, and the input parts can be assembled with the motor; the input part is also provided with an oil return hole through which lubricating oil can flow into the shell; the first sealing baffle is connected with the shell and can move relative to the shell to block the oil return hole. To the different requirements of different motorcycle types to reducing gear box shell structure, in order to promote the commonality of reducing gear box casing, satisfy the demand of different motorcycle types as far as possible, reducing gear box shell structure has oil gallery and assorted first sealed fender piece, to increasing range type hybrid vehicle, one side of reducing gear box casing need not cooperate with the motor, can utilize first sealed fender piece to block up the oil gallery, and this reducing gear box casing then can be applied to increasing range type hybrid vehicle. For pure electric vehicles, one side of the reduction gearbox shell is matched with a motor, an oil return hole is required to allow an input shaft to pass through and flow of lubricating oil, and the oil return hole on the shell is not closed at the moment, so that the reduction gearbox shell can be applied to the pure electric vehicles. Therefore, the universality of the gearbox shell is improved through the structural design, so that the requirements of different vehicle types are met, and the development cost of the shell is also reduced.

Drawings

Fig. 1 is a schematic view of a structure of a second portion of a gearbox housing according to an embodiment of the present utility model;

Fig. 2 is a schematic diagram of a housing structure of a reduction gearbox of an automobile according to an embodiment of the present utility model;

FIG. 3 is a schematic view of another structure of a second portion of a reduction gearbox housing according to an embodiment of the present utility model;

Fig. 4 is a schematic view of another structure of the second portion of the gearbox housing according to the embodiment of the present utility model.

Description of the reference numerals

100. A housing structure; 110. a housing; 111. a first portion; 112. a second portion; 113. an input unit; 114. an oil return hole; 115. an output unit; 116. sealing grooves; 117. positioning the spigot; 118. a bracket; 119. an oil return port; 120. a first sealing barrier; 130. a second sealing stop.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The individual features described in the specific embodiments can be combined in any suitable manner, without contradiction, for example by combination of different specific features, to form different embodiments and solutions. Various combinations of the specific features of the utility model are not described in detail in order to avoid unnecessary repetition.

In the following description, references to the term "first/second/are merely to distinguish between different objects and do not indicate that the objects have the same or a relationship therebetween. It should be understood that references to orientations of "above", "below", "outside" and "inside" are all orientations in normal use, and "left" and "right" directions refer to left and right directions illustrated in the specific corresponding schematic drawings, and may or may not be left and right directions in normal use.

It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. The term "coupled," unless specifically indicated otherwise, includes both direct and indirect coupling.

In particular embodiments, the reduction gearbox housing structure is suitable for use in an electric drive assembly for any type of vehicle, and illustratively, the reduction gearbox housing structure is suitable for use in an electric drive assembly for a pure electric vehicle; the reduction gearbox housing structure is applicable to an electric drive assembly of an extended range electric vehicle. For ease of understanding, a brief description of the types of vehicles is first provided, and conventional four-drive electric vehicles include all-electric four-drive vehicles and extended range hybrid four-drive vehicles.

For pure electric vehicles, in order to adapt to different front and rear cabin environments, the front and rear electric drive assemblies have differences in structural design. In order to ensure that the vehicle has enough trunk space, the rear axle electric drive assembly is usually in a lying posture, the included angle between the connecting line between the input shaft and the output shaft in the rear axle electric drive assembly and the horizontal plane is 45 degrees, compared with the conventional front axle electric drive assembly in a standing posture due to the fact that the chassis of the off-road vehicle is higher and the length of the whole vehicle is limited, the included angle between the connecting line between the input shaft and the output shaft in the front axle electric drive assembly and the horizontal plane is 75 degrees, the larger the included angle degree is, the larger the diffdrop is correspondingly, and the diff drop represents the height difference between the input shaft and the output shaft in the reduction gearbox under the carrying posture of the whole vehicle. For example, the precursor is a double-motor electric drive assembly, the double motors are coaxially arranged, the reduction gearbox is positioned in the middle of the double motors, and the motor controller and the radiator are all arranged on the reduction gearbox shell. The rear drive is also a double-motor electric drive assembly, the arrangement structure of the rear drive is the same as that of the front drive, and the front and rear electric drive shares a right shell and a left shell. The internal structures of the reduction gearbox shells of the front and rear electric drive assemblies are the same, and the internal shaft teeth, the gear shifting system, the filter and other parts of the front and rear reduction gearbox shells are the same, so that the corresponding structures of the front and rear reduction gearbox shells are consistent; the reduction gearbox shells of the front and rear electric drive assemblies are designed by combining active lubrication and splash lubrication, so that the reduction gearbox shells of the front and rear electric drive assemblies have the same internal structure, and the reduction gearbox shells of the front and rear electric drive assemblies of the pure electric automobile can be mutually universal.

For extended range hybrid vehicles, there are structural differences in the front-rear electric drive assemblies. Also, to ensure that the vehicle has sufficient trunk space, the rear axle electric drive assembly is typically in a "lying" position, where the angle between the line between the input and output shafts and the horizontal plane is 45 degrees, compared to 75 degrees, where the angle between the line between the input and output shafts and the horizontal plane is 75 degrees, due to the higher cross-country vehicle chassis and the limited overall vehicle length. But the front drive is single motor electric drive plus engine and generator power assembly, and the rear drive is two motor electric drive assemblies, can simply understand that only one side of front drive reducing gear box casing need connect the motor, and the motor is all needed to be connected to the both sides of rear drive reducing gear box casing, therefore the difference in structural requirement of the front drive reducing gear box casing of range-extending hybrid electric vehicle and rear drive reducing gear box casing. The rear-drive reduction gearbox shell of the range-extending hybrid electric vehicle is identical to the rear-drive reduction gearbox shell and the front-drive reduction gearbox shell of the pure electric vehicle in structure, and can be used universally.

Therefore, the application meets the universality of the front and rear drive reduction gearbox shells of the range-extended hybrid electric vehicle and the front and rear drive reduction gearbox shells of the pure electric vehicle through structural design.

In some embodiments, as shown in fig. 1 and 2, the reduction gearbox housing structure 100 includes a housing 110 and a first sealing stop 120, the housing 110 including a first portion 111 and a second portion 112, the first portion 111 and the second portion 112 each having an input 113, the input 113 being capable of being assembled with a motor; the input part 113 further has an oil return hole 114, and lubricating oil can flow into the housing 110 through the oil return hole 114; the first sealing stopper 120 is connected to the housing 110, and the first sealing stopper 120 is movable with respect to the housing 110 to block the oil return hole 114.

Specifically, the housing 110 includes a first portion 111 and a second portion 112, where the first portion 111 and the second portion 112 can be understood as a left housing and a right housing of the housing 110, for a dual-drive motor assembly, both sides of the gearbox housing 110 need to be assembled and connected with a motor, the first portion 111 and the second portion 112 each have an input portion 113, and the input portion 113 is assembled with the motor, for an extended-range hybrid vehicle, one side of the gearbox housing 110 is assembled with the motor, and the other side does not need to be assembled with the motor, and for convenience of explanation, the second portion 112 of the housing 110 may be assembled with the motor or not be assembled with the motor, which will be described in detail below, so as to realize universality of the housing 110. The second portion 112 has an input portion 113, and the input portion 113 is provided with oil return holes 114, where the oil return holes 114 can allow lubricating oil to pass through, and the position, the size and the number of the oil return holes 114 are not limited, and may be determined according to practical situations.

For example, as shown in A1 of fig. 1, the second portion 112 is mounted on a pure electric vehicle, the motors are mounted on two sides of the housing of the reduction gearbox, and an input shaft in the reduction gearbox can be connected with the motors through the oil return holes 114, and the rotation speed of the motors and gears of the reduction gearbox are used for adjustment. The motor and the lubricating oil in the reduction gearbox can circulate through the oil return hole 114, and the rotating shaft and the gear splash is utilized for lubrication.

Illustratively, as shown in B1 in fig. 1, the second portion 112 is mounted on the extended-range hybrid vehicle, one side of the reduction gearbox housing is assembled with the motor, the other side is not assembled with the motor, the first portion 111 is assembled with the motor, the second portion 112 is not assembled with the motor, the reduction gearbox housing is not sealed at this time, the interior of the reduction gearbox housing is communicated with the outside through the oil return hole 114, lubricating oil in the reduction gearbox housing can overflow through the oil return hole 114, and external impurities enter the reduction gearbox housing through the oil return hole 114 to cause pollution. The housing structure 100 further includes a first sealing stopper 120, where the first sealing stopper 120 is used to block the oil return hole 114, and any device or structure capable of blocking the oil return hole 114 is satisfactory, for example, the first sealing stopper 120 is a metal baffle structure, the first sealing stopper 120 is movably connected with the housing 110, a sliding groove is disposed on a surface of the housing 110, and the first sealing stopper 120 is provided with a sliding block, and the sliding of the sliding block in the sliding groove is utilized to realize opening and closing of the first sealing stopper 120 and the oil return hole 114. For example, the first sealing stopper 120 is a metal sealing plug, the first sealing stopper 120 is detachably connected to the housing 110, the first sealing stopper 120 has a sealing ring for sealing the oil return hole 114, the first sealing stopper 120 is not mounted on the housing structure 100 when the housing structure 100 is mounted on the electric vehicle, and the first sealing stopper 120 is mounted on the housing structure 100 when the housing structure 100 is mounted on the front drive assembly of the range-enhancing hybrid vehicle.

The utility model provides a gearbox shell structure of an automobile, and relates to the technical field of gearbox lubrication. The housing structure comprises a housing and a first sealing baffle, wherein the housing comprises a first part and a second part, the first part and the second part are respectively provided with an input part, and the input parts can be assembled with the motor; the input part is also provided with an oil return hole through which lubricating oil can flow into the shell; the first sealing baffle is connected with the shell and can move relative to the shell to block the oil return hole. To the different requirements of different motorcycle types to reducing gear box shell structure, in order to promote the commonality of reducing gear box casing, satisfy the demand of different motorcycle types as far as possible, reducing gear box shell structure has oil gallery and assorted first sealed fender piece, to increasing range type hybrid vehicle, one side of reducing gear box casing need not cooperate with the motor, can utilize first sealed fender piece to block up the oil gallery, and this reducing gear box casing then can be applied to increasing range type hybrid vehicle. For pure electric vehicles, one side of the reduction gearbox shell is matched with a motor, an oil return hole is required to allow an input shaft to pass through and flow of lubricating oil, and the oil return hole on the shell is not closed at the moment, so that the reduction gearbox shell can be applied to the pure electric vehicles. Therefore, the universality of the gearbox shell is improved through the structural design, so that the requirements of different vehicle types are met, and the development cost of the shell is also reduced.

In some embodiments, as shown in fig. 1, the second portion 112 has an output portion 115, the input portion 113 and the output portion 115 are respectively located at two ends of the second portion 112, and a portion of the oil return hole 114 is near one side of the output portion 115. Specifically, during normal running of the automobile, no matter the rear axle electric drive assembly is in a "lying" posture or the front axle electric drive assembly is in a "standing" posture, the height of the input portion 113 in the vertical direction is greater than or equal to the height of the output shaft in the vertical direction, so that for better lubricating oil passing through the oil return holes 114, at least a part of the oil return holes 114 near one side of the output portion 115 exist on the input portion 113, i.e. for the input portion 113, a part of the oil return holes 114 near a downward region in the vertical direction. In order to ensure the smoothness of the backflow, part of the oil return holes 114 are arranged close to one side of the output portion 115 at intervals, the interval distance between any two adjacent oil return holes 114 is not limited, and the circulation of lubricating oil is facilitated, for example, the distance between two adjacent oil return holes 114 is 2 cm.

In some embodiments, as shown in fig. 3, a sealing groove 116 and a positioning spigot 117 are provided on the surface of the input portion 113 of the second portion 112 to which the motor is assembled. Specifically, as shown in A2 of fig. 3, in order to make the housing 110 of the reduction gearbox be better assembled and connected with the motor, and avoid leakage of lubricating oil at a position where the housing 110 of the reduction gearbox is connected with the motor, a sealing groove 116 and a positioning spigot 117 are provided at a position where the housing 110 is connected with the motor, that is, a connection area between a surface of the input portion 113 and the motor, and the dimensions of the sealing groove 116 and the positioning spigot 117 are not limited, and the sealing groove 116 may be an annular structure according to practical situations.

In some embodiments, as shown in fig. 3B 2, the housing 110 also has a second sealing stop 130, with the second portion 112 not being connected to the motor, the second sealing stop 130 being used to fill the sealing groove 116 and the locating spigot 117, while the second sealing stop 130 may also be used to seal the return port 119 on the flange face. In order to facilitate the operation and installation, the second sealing stopper 130 is detachably connected to the housing 110, when the housing structure 100 is installed on the pure electric vehicle, the housing structure 100 is not provided with the second sealing stopper 130, and when the housing structure 100 is installed on the front drive assembly of the extended range hybrid vehicle, the housing structure 100 is provided with the second sealing stopper 130.

In some embodiments, as shown in fig. 4, the environment in which the reduction gearbox is mounted may be different in view of the installation of different vehicle models, and as shown in A3 of fig. 4, the outer surface of the second portion 112 further has a bracket 118, the bracket 118 being movable relative to the housing 110, the bracket 118 being adapted to be connected to the housing of the vehicle. Specifically, in order to improve the gearbox housing and to use various carrying environments, the outer surface of the second portion 112 is further provided with a support 118, the support 118 is used for being connected with the housing of the automobile, the housing of the automobile is utilized to provide support for the gearbox, the specific structure of the support 118 is not limited, and the support 118 can be in various cube shapes, for example, the support 118 is of a metal frame structure, the support 118 is movably connected with the housing 110, a sliding groove is formed in the surface of the housing 110, the support 118 is provided with a sliding block, and when the support is needed, the support 118 slides to a corresponding area through the sliding groove to be supported. To enhance convenience, the bracket 118 is detachably coupled to the housing 110. For example, for a pure electric vehicle, a mounting bracket 118 needs to be provided on the housing 110, and then the bracket 118 is mounted on the housing 110; for example, as shown in B3 of fig. 4, in the case of the extended range hybrid vehicle, the bracket 118 is detached from the case 110 without providing the bracket 118 on the case 110, so that flexibility and versatility of the case 110 are realized, and thus, a mold development cost can be reduced for a mold for manufacturing the case 110.

In some embodiments, multiple sets of flanges and multiple bolt connection points are provided on the housing 110. Specifically, in order to improve the universality of the arrangement of the front and rear drive assemblies of the same type, multiple groups of flanges and bolt connection points are arranged on the basis of different cabin environments of the front and rear drives, so that the rear axle electric drive assemblies are in a lying posture and the front axle electric drive assemblies are in a standing posture, and the front axle electric drive assemblies can be effectively connected. The carrying requirements of the front and rear drives are met through multi-point arrangement.

In some embodiments, the housing 110 is arranged with a plurality of threaded holes for mounting the harness bracket in different directions and a plurality of suspension bracket mounting points; the suspension bracket mounting points are used for mounting suspension brackets with different structures. Specifically, the shell of the front and rear driving motor assembly is shared, so that the reduction gearbox shell and the motor shell flange interface can be shared, the arrangement of the front and rear driving assemblies is considered to be different in inclination, the shell 110 is provided with a plurality of threaded holes and a plurality of suspension bracket mounting points, when the position of the reduction gearbox shell 110 mounted on the front driving assembly is in a standing posture, the threaded holes on the shell 110 can be used for mounting a wire harness bracket, and the wire harness bracket comprises a cooling water pipe bracket and a suspension bracket with a corresponding structure mounted on the mounting point potential of the high-voltage wire harness bracket. When the position of the shell 110 of the reduction gearbox, which is mounted on the rear drive assembly, is in a 'lying' posture, the threaded holes on the shell 110 can be used for mounting a cooling water pipe bracket and a high-voltage wire harness bracket. The mounting point of the suspension bracket can be used for mounting the suspension bracket with a corresponding structure.

The foregoing description is only of the preferred embodiments of the present utility model, and is not intended to limit the scope of the present utility model.

Claims (10)

1. A reduction gearbox housing structure of an automobile, comprising:

A housing comprising a first portion and a second portion, each of the first portion and the second portion having an input, the input being capable of being assembled with a motor;

The input part is also provided with an oil return hole through which lubricating oil can flow into the shell;

The first sealing baffle piece is connected with the shell and can move relative to the shell to block the oil return hole.

2. The housing structure of claim 1 wherein said first seal retainer is removably coupled to said housing, said first seal retainer having a seal ring for sealing said oil return opening.

3. The housing structure according to claim 1 or 2, wherein the second portion has an output portion, the input portion and the output portion are respectively located at both ends of the second portion, and a portion of the oil return hole is located near one side of the output portion.

4. A housing structure according to claim 3, wherein a part of the oil return holes are provided adjacent to one side of the output portion at intervals.

5. The housing structure of claim 1 wherein said input portion of said second portion is provided with a seal groove and a locating spigot on a surface to which said motor is assembled.

6. The housing structure of claim 5 wherein said housing further has a second sealing stop removably connected to said housing for filling said seal groove and said locating spigot.

7. The housing structure of claim 1 wherein the outer surface of the second portion further has a bracket, the bracket being movable relative to the housing, the bracket being for connection with a housing of an automobile.

8. The housing structure of claim 7 wherein said bracket is removably connected to said housing.

9. The housing structure of claim 1 wherein a plurality of sets of flanges and a plurality of bolt connection points are provided on the housing.

10. The housing structure of claim 1 wherein the housing is arranged with a plurality of threaded holes for mounting wire harness brackets in different directions and a plurality of suspension bracket mounting points; and a plurality of suspension bracket mounting points are used for mounting suspension brackets with different structures.