CN216069582U - Rear-drive electric drive system and longitudinal vehicle - Google Patents
Rear-drive electric drive system and longitudinal vehicle Download PDFInfo
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- CN216069582U CN216069582U CN202122606207.1U CN202122606207U CN216069582U CN 216069582 U CN216069582 U CN 216069582U CN 202122606207 U CN202122606207 U CN 202122606207U CN 216069582 U CN216069582 U CN 216069582U
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Abstract
The utility model relates to the technical field of rear-drive electric drive systems, and discloses a rear-drive electric drive system and a longitudinal vehicle, wherein the rear-drive electric drive system comprises: a housing; the motor is arranged on the shell; the input shaft is distributed along the running direction of the longitudinal vehicle and is in transmission connection with a rotor shaft of the motor, and the input shaft is positioned in the shell and is provided with a first gear; the output shaft is parallel to or coaxial with the input shaft, one end of the output shaft is positioned in the shell, the other end of the output shaft extends out of the shell, and the output shaft is provided with a gear set capable of being meshed with the first gear; the output flange is fixedly arranged at one end of the output shaft, which extends out of the shell, and can transmit power to a rear axle of the longitudinal vehicle. According to the rear-drive electric drive system disclosed by the utility model, the power output by the rotor shaft of the motor can be sequentially transmitted to the rear axle of the longitudinal vehicle through the input shaft, the first gear, the gear set, the output shaft and the output flange, so that the electric drive of the longitudinal vehicle is realized.
Description
Technical Field
The utility model relates to the technical field of rear-drive electric drive systems, in particular to a rear-drive electric drive system and a longitudinal vehicle.
Background
Most of the existing electric automobiles are transverse automobiles, longitudinal automobiles gradually enter the electromotion along with the further depth of the electromotion, and the structures of an electric driving system and an electric driving system of the transverse automobiles are not completely the same due to the completely different arrangement forms of the longitudinal automobiles and the transverse automobiles. Accordingly, there is a need for an electric drive system that can be mounted on a tandem vehicle.
SUMMERY OF THE UTILITY MODEL
Based on the above, the utility model aims to provide a rear-drive electric drive system and a longitudinal vehicle, which can meet the requirement of the longitudinal vehicle on the electric drive system and accelerate the process of realizing electric control of the longitudinal vehicle.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a rear drive electric drive system comprising: a housing; a motor disposed on the housing; the input shaft is distributed along the running direction of the longitudinal vehicle and is in transmission connection with a rotor shaft of the motor, and the input shaft is positioned in the shell and is provided with a first gear; the output shaft is parallel to or coaxial with the input shaft, one end of the output shaft is positioned in the shell, the other end of the output shaft extends out of the shell, and the output shaft is provided with a gear set capable of being meshed with the first gear; and the output flange is fixedly arranged at one end of the output shaft, which extends out of the shell, and can transmit power to a rear axle of the longitudinal vehicle.
As a preferable mode of the rear drive electric drive system, the output shaft is arranged in parallel with the input shaft, and the gear set includes a second gear meshed with the first gear, and the second gear is fixedly arranged on the output shaft.
As a preferable scheme of the rear-drive electric drive system, the output shaft and the input shaft are coaxially distributed, the rear-drive electric drive system further includes an intermediate shaft arranged in parallel with the input shaft, the gear set includes a third gear, a fourth gear and a fifth gear, the third gear and the fourth gear are both arranged on the intermediate shaft, the third gear is engaged with the first gear, and the fifth gear is arranged on the output shaft and is engaged with the fourth gear.
As a preferable scheme of the rear-drive electric drive system, the output shaft and the input shaft are coaxially distributed, the gear set includes three sixth gears engaged with the first gear, the three sixth gears are circumferentially distributed at intervals along the first gear, each sixth gear is engaged with the first gear, the rear-drive electric drive system further includes a planet carrier and a ring gear, the planet carrier is simultaneously connected with the three sixth gears, the ring gear is fixedly arranged on the housing, the ring gear is simultaneously engaged with the three sixth gears, and the output shaft is arranged at the center of the planet carrier.
As a preferred scheme of a rear-drive electric drive system, a first positioning protrusion is arranged on the rotor shaft, an assembly hole which penetrates through the rotor shaft along the axial direction is formed in the input shaft, at least part of the rotor shaft extends into the assembly hole, the rotor shaft is connected with the input shaft through a first spline, and one end of the input shaft is abutted to the first positioning protrusion.
As a preferred scheme of the rear-drive electric drive system, an oil guide gasket is arranged on the housing, the oil guide gasket is located at one end, away from the motor, of the input shaft, and the oil guide gasket can introduce oil in the housing into the assembly hole to lubricate the first spline.
As a preferred scheme of the rear-drive electric drive system, a first sealing ring is clamped between one end of the input shaft close to the motor and the rotor shaft, and a first oil seal is arranged between the outer side surface of one end of the input shaft close to the motor and the shell to prevent oil in the shell from flowing outwards.
As a preferable scheme of the rear-drive electric drive system, the output flange is provided with a connecting hole which penetrates through the output flange along the axial direction, the output shaft is provided with a second positioning protrusion, the output shaft penetrates through the connecting hole and is connected with the output flange through a second spline, and a fastening piece which is abutted against one end of the output flange is fixed at the end part of the output shaft so that the other end of the output flange is abutted against the second positioning protrusion.
As a preferable scheme of the rear-drive electric drive system, a second sealing ring is clamped between the output shaft and the output flange, the second sealing ring is located between the second spline and the fastening piece, and a second oil seal is arranged between the outer wall surface of the output flange and the shell to prevent oil in the shell from flowing out.
A longitudinal vehicle comprises the rear-drive electric drive system in any one of the above aspects.
The utility model has the beneficial effects that: according to the rear-drive electric drive system disclosed by the utility model, the power output by the rotor shaft of the motor can be sequentially transmitted to the rear axle of the longitudinal vehicle through the input shaft, the first gear, the gear set, the output shaft and the output flange, so that the electric drive of the longitudinal vehicle is realized.
The longitudinal vehicle disclosed by the utility model comprises the rear-drive electric drive system, so that the electric drive of the longitudinal vehicle is realized.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a cross-sectional view of a rear drive electric drive system provided in accordance with an embodiment of the present invention;
FIG. 2 is a schematic block diagram of a rear drive electric drive system provided in accordance with an exemplary embodiment of the present invention;
FIG. 3 is a schematic, diagrammatic illustration of a rear drive electric drive system provided in accordance with a second embodiment of the present invention;
fig. 4 is a schematic diagram of a rear drive electric drive system provided in accordance with a third embodiment of the present invention.
In the figure:
1. a housing;
2. a motor; 21. a rotor shaft; 211. a first positioning protrusion;
31. an input shaft; 310. an assembly hole; 311. a first limit protrusion; 32. a first gear;
41. an output shaft; 411. a second positioning projection; 412. a second limit protrusion; 42. a second gear; 43. an intermediate shaft; 44. a third gear; 45. a fourth gear; 46. a fifth gear; 47. a sixth gear; 48. a planet carrier; 49. a ring gear;
5. an output flange;
61. a first spline; 62. a second spline; 63. a fastener;
71. an oil guide gasket; 72. a first seal ring; 73. a first oil seal;
81. a second seal ring; 82. a second oil seal;
91. a first bearing; 92. a first adjusting shim; 93. a second bearing; 94. a second adjusting shim.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
The embodiment provides a rear-drive electric drive system for a longitudinal vehicle, as shown in fig. 1 and 2, comprising a housing 1, a motor 2, an input shaft 31, the motor 2 is arranged on the shell 1, the input shaft 31 is distributed along the traveling direction of the longitudinal vehicle and is in transmission connection with the rotor shaft 21 of the motor 2, the input shaft 31 is located in the shell 1 and is provided with the first gear 32, the first gear 32 is fixedly arranged on the input shaft 31 or is integrally formed with the input shaft 31, the output shaft 41 is arranged in parallel with the input shaft 31, one end of the output shaft 41 is located in the shell 1, the other end of the output shaft 41 extends out of the shell 1, the output shaft 41 is provided with the gear set capable of being meshed with the first gear 32, the output flange 5 is fixedly arranged at one end of the output shaft 41 extending out of the shell 1, and the output flange 5 can transmit power to a rear axle of the longitudinal vehicle.
The power output by the rotor shaft 21 of the motor 2 of the rear drive electric drive system provided by the embodiment can be sequentially transmitted to the rear axle of the longitudinal vehicle through the input shaft 31, the first gear 32, the gear set, the output shaft 41 and the output flange 5, so that the electric drive of the longitudinal vehicle is realized.
As shown in fig. 1 and 2, the gear set of the present embodiment includes a second gear 42 engaged with the first gear 32, and the second gear 42 is fixedly provided on the output shaft 41. That is, the power output from the rotor shaft 21 of the motor 2 is transmitted to the rear axle of the tandem vehicle through the input shaft 31, the first gear 32, the second gear 42, the output shaft 41, and the output flange 5 in this order. Specifically, the second gear 42 is interference fitted on the output shaft 41 or provided integrally with the output shaft 41. The diameter of the second gear 42 of the present embodiment is larger than the diameter of the first gear 32, so that the rotation speed of the output shaft 41 is smaller than the rotation speed of the input shaft 31, and further the torque of the output shaft 41 is larger than the torque of the input shaft 31, thereby realizing the increase of the torque.
As shown in fig. 1, the rotor shaft 21 of the present embodiment is provided with a first positioning protrusion 211, the input shaft 31 is provided with a fitting hole 310 penetrating in the axial direction, at least a part of the rotor shaft 21 extends into the fitting hole 310, the rotor shaft 21 is connected to the input shaft 31 by a first spline 61, the rotor shaft 21 is attached to a wall surface of the fitting hole 310, and one end of the input shaft 31 abuts against the first positioning protrusion 211. Specifically, the first spline 61 of the present embodiment is composed of a first internal spline and a first external spline, the first internal spline is disposed at the end of the rotor shaft 21, the first external spline is disposed in the fitting hole 310 of the input shaft 31, and the first internal spline and the first external spline cooperate to realize the transmission connection between the rotor shaft 21 and the input shaft 31.
As shown in fig. 1, the rear drive electric drive system of the present embodiment further includes two first bearings 91 and a first adjusting shim 92, wherein the two first bearings 91 are spaced and sleeved on the input shaft 31 to support the input shaft 31. Specifically, two first limiting protrusions 311 are arranged on the input shaft 31, each first bearing 91 is clamped between the housing 1 and one first limiting protrusion 311, in order to prevent the two first bearings 91 from moving relative to the input shaft 31, the first adjusting gasket 92 is located between the outer ring of one first bearing 91 and the housing 1, and the thickness of the first adjusting gasket 92 is selected according to actual needs.
As shown in fig. 1, the housing 1 of the present embodiment is provided with an oil guiding gasket 71, the oil guiding gasket 71 is located at an end of the input shaft 31 away from the motor 2, and the oil guiding gasket 71 can guide oil in the housing 1 into the assembly hole 310 to lubricate the first spline 61. As shown in fig. 1, a first seal 72 is interposed between one end of the input shaft 31 close to the motor 2 and the rotor shaft 21 to prevent the oil in the assembly hole 310 from flowing out, and a first oil seal 73 is disposed between an outer side surface of one end of the input shaft 31 close to the motor 2 and the housing 1 to prevent the oil in the housing 1 from flowing out. It is understood that the first oil seal 73 belongs to the prior art, and is specifically obtained by outsourcing, and is not described in detail herein.
Specifically, in order to facilitate assembly, an annular groove (not shown in the figure) is formed in the outer wall of the rotor shaft 21 along the circumferential direction of the rotor shaft, the first sealing ring 72 is located in the annular groove, and after the rotor shaft 21 extends into the assembly hole 310, the first sealing ring 72 is squeezed, so that sealing connection is achieved between the rotor shaft 21 and the assembly hole 310 of the input shaft 31, and oil in the assembly hole 310 is prevented from flowing outwards.
As shown in fig. 1, the output flange 5 of the present embodiment is provided with a coupling hole (not shown) that penetrates in the axial direction, the output shaft 41 is provided with a second positioning protrusion 411, the output shaft 41 is provided through the coupling hole and the output shaft 41 and the output flange 5 are coupled by a second spline 62, and a fastening member 63 that abuts one end of the output flange 5 is fixed to an end portion of the output shaft 41 so that the other end of the output flange 5 abuts the second positioning protrusion 411. Specifically, the second spline 62 of the present embodiment is formed by a combination of a second internal spline and a second external spline, the second internal spline is disposed on the output shaft 41, the second external spline is disposed in the connecting hole of the output flange 5, and the second internal spline and the second external spline cooperate to realize the transmission connection between the output flange 5 and the output shaft 41. The fastening member 63 of the present embodiment is a lock nut, and the end portion of the output shaft 41 is provided with an external thread, and the lock nut is screwed on the external thread and abuts against the output flange 5 so that the output flange 5 does not move relative to the output shaft 41 in the axial direction of the output shaft 41.
As shown in fig. 1, the rear drive electric drive system of the present embodiment further includes two second bearings 93 and a second adjusting shim 94, and the two second bearings 93 are disposed on the output shaft 41 at intervals along the forward direction of the rear vehicle to support the output shaft 41. Specifically, two second limiting protrusions 412 are arranged on the output shaft 41, each second bearing 93 is clamped between the housing 1 and one second limiting protrusion 412, in order to prevent the two second bearings 93 from moving relative to the output shaft 41, the second adjusting gasket 94 is located between the outer ring of the second bearing 93 at the rear end and the housing 1, and the thickness of the second adjusting gasket 94 is selected according to actual needs.
As shown in fig. 1, a second seal ring 81 is interposed between the output shaft 41 and the output flange 5 in the present embodiment, the second seal ring 81 is located between the second spline 62 and the fastening member 63 to block the oil in the connecting hole from flowing out, and a second oil seal 82 is provided between the outer wall surface of the output flange 5 and the housing 1 to block the oil in the housing 1 from flowing out. It is understood that the second oil seal 82 belongs to the prior art, and is specifically obtained by outsourcing, and is not described in detail herein.
The embodiment also provides a longitudinal vehicle which comprises the rear-drive electric drive system provided by the technical scheme.
The longitudinal vehicle provided by the embodiment comprises the rear drive electric drive system, so that the longitudinal vehicle is electrically driven.
Example two
The present embodiment is different from the embodiment in that the gear set of the present embodiment does not include the second gear 42 and the output shaft 41 is not disposed in parallel with the input shaft 31, as shown in fig. 3, the gear set includes a third gear 44, a fourth gear 45 and a fifth gear 46, the output shaft 41 is disposed coaxially with the input shaft 31, the rear drive electric drive system further includes an intermediate shaft 43 disposed in parallel with the input shaft 31, the third gear 44 and the fourth gear 45 are both disposed on the intermediate shaft 43, the third gear 44 is engaged with the first gear 32, and the fifth gear 46 is disposed on the output shaft 41 and is engaged with the fourth gear 45. That is, the power output from the rotor shaft 21 of the motor 2 is transmitted to the rear axle of the vertical vehicle through the input shaft 31, the first gear 32, the third gear 44, the intermediate shaft 43, the fourth gear 45, the fifth gear 46, the output shaft 41, and the output flange 5 in this order, thereby realizing the electric driving of the vertical vehicle.
The longitudinal placement vehicle provided in this embodiment is the same as the first embodiment, and is not described herein again.
EXAMPLE III
The present embodiment is different from the embodiment in that the gear set of the present embodiment does not include the second gear 42 and the output shaft 41 is not disposed in parallel with the input shaft 31, as shown in fig. 4, the gear set comprises three sixth gears 47 meshed with the first gear 32, the output shaft 41 is coaxially arranged with the input shaft 31, the three sixth gears 47 are uniformly distributed at intervals along the circumferential direction of the first gear 32, each sixth gear 47 is meshed with the first gear 32, the rear-drive electric drive system further comprises a planet carrier 48 and a gear ring 49, the planet carrier 48 is simultaneously connected with the three sixth gears 47, the gear ring 49 is fixedly arranged on the shell 1, the gear ring 49 is simultaneously meshed with the three sixth gears 47, the output shaft 41 is arranged in the center of the planet carrier 48, when the first gear 32 rotates, since the sixth gear 47 is meshed with the first gear 32 and the ring gear 49, the sixth gear 47 rotates around the first gear 32 and rotates relative to itself. That is, the power output from the rotor shaft 21 of the motor 2 is transmitted to the rear axle of the vertical vehicle through the input shaft 31, the first gear 32, the sixth gear 47, the carrier 48, the output shaft 41, and the output flange 5 in this order, thereby achieving electric driving of the vertical vehicle.
The longitudinal placement vehicle provided in this embodiment is the same as the first embodiment, and is not described herein again.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A rear drive electric drive system, comprising:
a housing (1);
a motor (2) arranged on the housing (1);
the input shaft (31) is distributed along the traveling direction of the longitudinal vehicle and is in transmission connection with the rotor shaft (21) of the motor (2), and the input shaft (31) is positioned in the shell (1) and is provided with a first gear (32);
the output shaft (41) is parallel to or coaxial with the input shaft (31), one end of the output shaft (41) is positioned in the shell (1), the other end of the output shaft extends out of the shell (1), and a gear set capable of being meshed with the first gear (32) is arranged on the output shaft (41);
the output flange (5) is fixedly arranged at one end, extending out of the shell (1), of the output shaft (41), and the output flange (5) can transmit power to a rear axle of the longitudinal vehicle.
2. Rear-drive electric drive system according to claim 1, characterized in that the output shaft (41) is arranged in parallel with the input shaft (31), the gear set comprising a second gear (42) meshing with the first gear (32), the second gear (42) being fixedly arranged on the output shaft (41).
3. Rear drive electric drive system according to claim 1, characterized in that the output shaft (41) is arranged coaxially with the input shaft (31), the rear drive electric drive system further comprising an intermediate shaft (43) arranged in parallel with the input shaft (31), the gear set comprising a third gear (44), a fourth gear (45) and a fifth gear (46), the third gear (44) and the fourth gear (45) being arranged on the intermediate shaft (43), the third gear (44) being in engagement with the first gear (32), the fifth gear (46) being arranged on the output shaft (41) and being in engagement with the fourth gear (45).
4. The rear-drive electric drive system according to claim 1, characterized in that said output shaft (41) is coaxial with said input shaft (31), said gear train comprises three sixth gears (47) meshing with said first gear (32), three of said sixth gears (47) are spaced apart along a circumferential direction of said first gear (32) and each of said sixth gears (47) meshes with said first gear (32), said rear-drive electric drive system further comprises a carrier (48) and a ring gear (49), said carrier (48) being simultaneously connected to three of said sixth gears (47), said ring gear (49) being fixedly arranged on said housing (1) and said ring gear (49) simultaneously meshing with three of said sixth gears (47), a center of said carrier (48) being provided with said output shaft (41).
5. The rear drive electric drive system according to claim 1, characterized in that a first positioning protrusion (211) is arranged on the rotor shaft (21), a mounting hole (310) is arranged on the input shaft (31) in a penetrating manner along the axial direction, at least a part of the rotor shaft (21) extends into the mounting hole (310), the rotor shaft (21) is connected with the input shaft (31) through a first spline (61), and one end of the input shaft (31) is abutted to the first positioning protrusion (211).
6. Rear-drive electric drive system according to claim 5, characterized in that an oil guiding gasket (71) is provided on the housing (1), the oil guiding gasket (71) being located at an end of the input shaft (31) facing away from the electric machine (2), the oil guiding gasket (71) being capable of guiding oil in the housing (1) into the assembly hole (310) to lubricate the first spline (61).
7. The rear-drive electric drive system of claim 1, characterized in that a first sealing ring (72) is interposed between one end of the input shaft (31) close to the motor (2) and the rotor shaft (21), and a first oil seal (73) is arranged between an outer side surface of one end of the input shaft (31) close to the motor (2) and the housing (1) to prevent oil in the housing (1) from flowing out.
8. The rear-drive electric drive system according to claim 1, characterized in that the output flange (5) is provided with a connecting hole penetrating in the axial direction, the output shaft (41) is provided with a second positioning protrusion (411), the output shaft (41) is arranged to penetrate through the connecting hole, the output shaft (41) is connected with the output flange (5) through a second spline (62), and a fastening member (63) abutting against one end of the output flange (5) is fixed to an end portion of the output shaft (41) so that the other end of the output flange (5) abuts against the second positioning protrusion (411).
9. The rear drive electric drive system according to claim 8, characterized in that a second sealing ring (81) is interposed between the output shaft (41) and the output flange (5), the second sealing ring (81) is located between the second spline (62) and the fastening member (63), and a second oil seal (82) is provided between the outer wall surface of the output flange (5) and the housing (1) to block oil in the housing (1) from flowing out.
10. A tandem mobile vehicle, comprising a rear drive electric drive system according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122606207.1U CN216069582U (en) | 2021-10-28 | 2021-10-28 | Rear-drive electric drive system and longitudinal vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122606207.1U CN216069582U (en) | 2021-10-28 | 2021-10-28 | Rear-drive electric drive system and longitudinal vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216069582U true CN216069582U (en) | 2022-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122606207.1U Active CN216069582U (en) | 2021-10-28 | 2021-10-28 | Rear-drive electric drive system and longitudinal vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216069582U (en) |
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2021
- 2021-10-28 CN CN202122606207.1U patent/CN216069582U/en active Active
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