CN213017552U - High-integration electric drive assembly transmission system - Google Patents
High-integration electric drive assembly transmission system Download PDFInfo
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- CN213017552U CN213017552U CN202021861132.0U CN202021861132U CN213017552U CN 213017552 U CN213017552 U CN 213017552U CN 202021861132 U CN202021861132 U CN 202021861132U CN 213017552 U CN213017552 U CN 213017552U
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Abstract
The utility model discloses a high integrated electricity drives assembly transmission system, including motor shaft, input shaft gear, differential mechanism subassembly and intermediate shaft subassembly, input shaft gear circumference is fixed on the motor shaft, the one-level gear engagement of input shaft gear and intermediate shaft subassembly, the second grade gear of intermediate shaft subassembly and the input gear engagement of differential mechanism subassembly. The motor shell, the right gearbox of the speed reducer and the controller shell share one box body, the motor shaft and the input shaft of the speed reducer share one shaft, and the input shaft gear is installed at the end of the speed reducer through a half spline and a half optical axis in a matching mode. The utility model discloses a power passes through the motor shaft and transmits the input shaft gear, and input shaft gear transmits jackshaft, jackshaft transmission to the differential mechanism again, and last power transmission is to the both ends transmission shaft on. The utility model discloses can effectively solve current driving system with high costs, installation space is big, the spare part is many, integrate the low problem of degree, satisfy the gear drive precision simultaneously, avoid gear and bearing to become invalid and NVH problem in advance.
Description
Technical Field
The utility model relates to an electric automobile field, in particular to high integrated electricity drives assembly transmission system.
Background
With the rapid development of the electric automobile industry, a high-performance, low-cost and highly-integrated power assembly becomes an industry trend. On the current market, common new forms of energy power assembly is formed by motor, controller and reduction gear equipment respectively, and motor, reduction gear and controller need be linked and match, not only need more bolts to close the case fixedly, have increased the oil leak risk, also have simultaneously that the cooperation precision is difficult to guarantee, the easy failure mode such as wearing and tearing of cooperation spline. In addition, the three-in-one power assembly is only packaged and sold after the three modules are assembled, and the structure and the function of the three-in-one power assembly are not different from those of the common new energy power assembly.
Disclosure of Invention
An object of the utility model is to overcome prior art's defect, provide a high integrated electricity and drive assembly transmission system, it has advantages such as compact structure, with low costs, high integration and high performance.
The technical scheme of the utility model is realized like this: the utility model discloses a high integrated electricity drives assembly transmission system, including motor shaft, input shaft gear, differential mechanism subassembly and jackshaft subassembly, jackshaft subassembly includes the jackshaft and sets up one-level gear, the second grade gear on the jackshaft, input shaft gear circumference is fixed on the motor shaft, the one-level gear engagement of input shaft gear and jackshaft subassembly, the second grade gear of jackshaft subassembly and the input gear engagement of differential mechanism subassembly.
Furthermore, the inner hole wall of the input shaft gear is provided with an inner spline section and a unthreaded hole section, the motor shaft is provided with an outer spline section and an unthreaded shaft section which respectively correspond to the inner spline section and the unthreaded hole section of the input shaft gear, the inner spline section of the input shaft gear is in spline fit with the outer spline section on the motor shaft, and the unthreaded hole section of the input shaft gear is in shaft hole fit with the unthreaded shaft section on the motor shaft.
Furthermore, one end of the input shaft gear is axially limited through a limiting step arranged on the motor shaft, and the other end of the input shaft gear is axially limited through an input shaft gear retainer ring.
Furthermore, the highly integrated electric drive assembly transmission system of the utility model also comprises a left box body, a right box body and a rear end cover, wherein the left box body is fixed at the left end of the right box body, a reducer cavity is formed between the left box body and the right box body, the rear end cover is fixed at the right end of the right box body, and a motor cavity is arranged in the right box body; the input shaft gear, the differential assembly and the intermediate shaft assembly are all located in a speed reducer cavity between the left box body and the right box body.
Furthermore, the right end of the motor shaft is supported on the rear end cover through a right bearing of the motor shaft, and the left end of the motor shaft is supported on the left box body through a left bearing of the input shaft; the inner ring of the right bearing of the motor shaft is limited by a right bearing retainer ring, and the outer ring of the right bearing of the motor shaft is fixed by a bearing pressing plate.
Further, the motor shaft is supported on the right box body through a motor shaft middle bearing, the input shaft gear is located between the input shaft left bearing and the motor shaft middle bearing, a motor shaft oil seal is arranged between the motor shaft and the right box body, and the motor shaft oil seal is located between the input shaft gear and the motor shaft middle bearing.
Furthermore, the left end of the middle bearing of the motor shaft is pre-tightened through a wave spring, the wave spring is located between the left end of the middle bearing of the motor shaft and the end face of the right box body, and the right end of the middle bearing of the motor shaft is axially limited through a limiting step arranged on the motor shaft.
The wave spring is positioned between the left end of the middle bearing of the motor shaft and the oil seal of the motor shaft.
Furthermore, the left end of the intermediate shaft is supported on the left box body through an intermediate shaft left bearing, and the right end of the intermediate shaft is supported on the right box body through an intermediate shaft right bearing; the left end of the differential assembly is supported on the left box body through a differential left bearing, and the right end of the differential assembly is supported on the right box body through a differential right bearing; the first-stage gear is circumferentially fixed on the intermediate shaft, and the second-stage gear and the intermediate shaft are integrally formed.
Furthermore, a motor assembly is arranged in a motor cavity of the right box body, a rotor of the motor assembly is arranged on the motor shaft and is positioned between the middle bearing of the motor shaft and the right bearing of the motor shaft, and the motor shaft is driven to rotate through the rotation of the rotor.
Furthermore, the right box body is formed by integrating a right shell of the speed reducer, a shell of the motor and a shell of the controller, so that the motor assembly, the speed reducer and the controller share the right box body.
The utility model has the advantages of as follows:
compared with the prior art, the utility model integrates the right box body of the reducer, the motor shell and the controller shell into a box body; the motor shaft and the input shaft of the speed reducer share one shaft, and the input shaft gear is fixedly connected with the motor shaft in a matching mode of one section of the spline section of the unthreaded hole. For current electric drive power assembly scheme, this scheme advantage: the three box bodies are integrated into one box body, so that the weight is reduced and the cost is reduced; the two shafts are integrated into a motor shaft, so that the problem of abrasion of the original two shafts in cooperation with the spline is reduced; the input shaft gear is connected by a section of spline and a section of unthreaded hole, so that the positioning precision of the gear is improved; the left end is additionally provided with the floating bearing, so that a motor shaft is prevented from being supported by a cantilever beam, and the gear meshing precision and the motor shaft supporting rigidity are improved.
This scheme makes reduction gears and driving motor no longer use splined connection, can effectively solve splined connection and have the problem of wearability, improves power assembly's reliability, prolongs its life. Moreover, for multi-bearing and two-shaft transmission of the existing scheme, the input shaft of the speed reducer is omitted, so that the whole system is more compact in structure, light weight and miniaturization of the existing scheme are facilitated, and the aim of low cost is fulfilled. Compared with the prior art, the controller shell, the speed reducer shell and the motor shell are separately manufactured, all plates need to be connected through fasteners and the like, the integration level of the whole system is low, and the cost is lower due to the fact that the scheme is highly integrated with the system box body.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, 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 drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a highly integrated electric drive assembly transmission system according to an embodiment of the present invention;
FIG. 2 is an external view of a highly integrated electric drive assembly drive system according to an embodiment of the present invention;
fig. 3 is a structural diagram of a highly integrated electric drive assembly transmission system according to an embodiment of the present invention.
In the drawings: 1 is a differential assembly; 2 is a middle shaft component; 3 is a left box body; 4 is the left bearing of the motor shaft; 5 is an input shaft gear retainer ring; 6 is an input shaft gear; 7 is a motor shaft oil seal; 8 is a right box body; 9 is a wave spring; 10 is the middle bearing of the motor shaft; 11 is a motor shaft; 12 is a bearing pressure plate; 13 is the right bearing of the motor shaft; 14 is a bearing retainer ring; and 15 is a rear end cover.
Detailed Description
The technical solutions in the embodiments of the present invention are described below clearly and completely, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1 to 3, the embodiment of the utility model discloses a high integrated electricity drives assembly transmission system, including motor shaft 11, input shaft gear 6, differential mechanism subassembly 1 and countershaft subassembly 2, countershaft subassembly 2 includes the jackshaft and sets up at epaxial one-level gear, secondary gear of jackshaft, 6 circumference of input shaft gear are fixed on motor shaft 11, input shaft gear 6 meshes with the one-level gear of countershaft subassembly 2, and the secondary gear of countershaft subassembly 2 meshes with the gear wheel (input gear or main reducing gear) of differential mechanism subassembly 1. The left end of the motor shaft of the embodiment is pressed with the input shaft gear. One end of the input shaft gear 6 is axially limited through a limiting step arranged on the motor shaft 11, and the other end of the input shaft gear 6 is axially limited through the input shaft gear retainer ring 5.
Further, the hole wall of the inner hole of the input shaft gear 6 is provided with an inner spline section and a unthreaded hole section, the motor shaft 11 is provided with an outer spline section and an unthreaded shaft section which respectively correspond to the inner spline section and the unthreaded hole section of the input shaft gear 6, the inner spline section of the input shaft gear 6 is in spline fit with the outer spline section on the motor shaft 11, and the unthreaded hole section of the input shaft gear 6 is in shaft hole fit with the unthreaded shaft section on the motor shaft 11. The unthreaded hole section of the input shaft gear 6 of the present embodiment is clearance-fitted with the optical axis section on the motor shaft 11. The connection mode of the input shaft and the motor shaft in the embodiment is as follows: the left end spline and the right end unthreaded hole are matched, the spline bears torque, and the unthreaded hole is matched with the radial support gear, so that the precision requirement after the gear is assembled is met.
Further, the highly integrated electric drive assembly transmission system of the utility model also comprises a left box body 3, a right box body 8 and a rear end cover 15, wherein the left box body 3 is fixed at the left end of the right box body 8, a reducer cavity is formed between the left box body 3 and the right box body 8, the rear end cover 15 is fixed at the right end of the right box body 8, and a motor cavity is arranged in the right box body 8; the input shaft gear 6, the differential assembly 1 and the middle shaft assembly 2 are all located in a speed reducer cavity between the left box body 3 and the right box body 8.
Furthermore, the right end of the motor shaft is supported on the rear end cover 15 through a motor shaft right bearing 13, and the left end of the motor shaft is supported on the left box body 3 through an input shaft left bearing 4; the inner ring of the right bearing 13 of the motor shaft is limited by a right bearing retainer ring 14, and the outer ring of the right bearing 13 of the motor shaft is fixed by a bearing pressure plate 12; the input shaft left bearing 4 only bears radial force and axially floats.
Further, the motor shaft is supported on the right box body 8 through a motor shaft middle bearing 10, the input shaft gear 6 is located between the input shaft left bearing 4 and the motor shaft middle bearing 10, a motor shaft oil seal 7 is arranged between the motor shaft and the right box body 8, and the motor shaft oil seal 7 is located between the input shaft gear 6 and the motor shaft middle bearing 10.
Furthermore, the middle bearing of the motor shaft axially floats, the left end of the middle bearing of the motor shaft is pre-tightened through a wave spring, the wave spring is positioned between the left end of the middle bearing of the motor shaft and the end surface of the right box body 8, and the right end of the middle bearing of the motor shaft is axially limited through a limiting step arranged on the motor shaft 11.
The wave spring is positioned between the left end of the middle bearing of the motor shaft and the oil seal 7 of the motor shaft.
Furthermore, the left end of the intermediate shaft is supported on the left box body 3 through an intermediate shaft left bearing, and the right end of the intermediate shaft is supported on the right box body 8 through an intermediate shaft right bearing; the left end of the differential assembly 1 is supported on the left box body 3 through a differential left bearing, and the right end of the differential assembly 1 is supported on the right box body 8 through a differential right bearing; the first-stage gear is circumferentially fixed on the intermediate shaft, and the second-stage gear and the intermediate shaft are integrally formed.
Furthermore, a motor assembly is arranged in a motor cavity of the right box body 8, a rotor of the motor assembly is arranged on the motor shaft 11 and is positioned between the middle bearing 10 of the motor shaft and the right bearing 13 of the motor shaft, and the motor shaft 11 is driven to rotate through the rotation of the rotor.
Further, a right box body 8 is shared by the right shell of the speed reducer, the motor shell and the controller shell, and a motor shaft oil seal 7 of the motor shaft is installed on the side of the speed reducer, so that the matching diameter can be reduced, the high-speed requirement is met, and the risk of oil leakage is avoided.
The motor side rotor rotates to drive the motor shaft 11 to rotate, power is transmitted to the input gear 6 of the speed reducer, the input gear 6 is meshed with the first-stage gear of the middle shaft assembly 2, the second-stage gear of the middle shaft assembly 2 is meshed with the large gear of the differential mechanism assembly 1 again, the power of the motor is transmitted to the output end of the speed reducer, and the differential mechanism assembly 1 transmits the power to the whole vehicle through the inner half shaft gear, so that the power transmission of the whole system is realized.
The utility model discloses box of motor casing, reduction gear right side case, controller casing sharing, a motor shaft and reduction gear input shaft sharing root axis, the motor shaft is held at the reduction gear and is installed the input shaft gear through the half optical axis's of half spline cooperation mode, at a bearing of input shaft gear left side installation, whole motor shaft adopts three bearing support modes. The oil seal on the motor shaft is arranged between the input shaft gear and the intermediate bearing, the matching diameter of the oil seal of the motor shaft is small, the high-speed requirement is met, and the risk of oil leakage is avoided. The utility model discloses a trinity electricity drives power transmission system's power transmits the input shaft gear through the motor shaft, and the input shaft gear transmits jackshaft, jackshaft transmission to the differential mechanism again, and last power transmission is to both ends transmission shaft. This electricity drives trinity electricity and drives power assembly scheme can effectively solve current driving system with high costs, installation space is big, the spare part is many, integrate the problem that the degree is low, satisfies the gear drive precision simultaneously, avoids gear and bearing to become invalid in advance and NVH problem.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A high integrated electricity drives assembly transmission system which characterized in that: including motor shaft (11), input shaft gear (6), differential mechanism subassembly (1) and countershaft subassembly (2), countershaft subassembly (2) include the jackshaft and set up one-level gear, the secondary gear on the jackshaft, input shaft gear (6) circumference is fixed on motor shaft (11), input shaft gear (6) and the one-level gear engagement of jackshaft subassembly (2), the secondary gear of jackshaft subassembly (2) and the input gear engagement of differential mechanism subassembly (1).
2. The highly integrated electric drive assembly drive system of claim 1, wherein: the hole pore wall of input shaft gear (6) is equipped with internal spline section and unthreaded hole section, be equipped with external spline section and unthreaded shaft section on motor shaft (11), correspond with the internal spline section and the unthreaded hole section of input shaft gear (6) respectively, the internal spline section of input shaft gear (6) and the external spline section spline fit on motor shaft (11), the unthreaded hole section of input shaft gear (6) and the optical axis section shaft hole cooperation on motor shaft (11).
3. The highly integrated electric drive assembly drive system of claim 1 or 2, wherein: one end of the input shaft gear (6) is axially limited through a limiting step arranged on the motor shaft (11), and the other end of the input shaft gear (6) is axially limited through an input shaft gear retainer ring (5).
4. The highly integrated electric drive assembly drive system of claim 1, wherein: the gearbox is characterized by further comprising a left box body (3), a right box body (8) and a rear end cover (15), wherein the left box body (3) is fixed at the left end of the right box body (8), a reducer cavity is formed between the left box body (3) and the right box body (8), the rear end cover (15) is fixed at the right end of the right box body (8), and a motor cavity is arranged in the right box body (8); the input shaft gear (6), the differential assembly (1) and the intermediate shaft assembly (2) are all located in a speed reducer cavity between the left box body (3) and the right box body (8).
5. The highly integrated electric drive assembly drive system of claim 4, wherein: the right end of the motor shaft is supported on a rear end cover (15) through a motor shaft right bearing (13), and the left end of the motor shaft is supported on the left box body (3) through an input shaft left bearing (4); the inner ring of the right bearing (13) of the motor shaft is limited by a right bearing retainer ring (14), and the outer ring of the right bearing (13) of the motor shaft is fixed by a bearing pressure plate (12).
6. The highly integrated electric drive assembly drive system of claim 5, wherein: the motor shaft is supported on the right box body (8) through a motor shaft middle bearing (10), the input shaft gear (6) is located between the input shaft left bearing (4) and the motor shaft middle bearing (10), a motor shaft oil seal (7) is arranged between the motor shaft and the right box body (8), and the motor shaft oil seal (7) is located between the input shaft gear (6) and the motor shaft middle bearing (10).
7. The highly integrated electric drive assembly drive system of claim 6, wherein: the left end of the motor shaft middle bearing is pre-tightened through a wave spring, the wave spring is located between the left end of the motor shaft middle bearing and the end face of the right box body (8), and the right end of the motor shaft middle bearing is axially limited through a limiting step arranged on a motor shaft (11).
8. The highly integrated electric drive assembly drive system of claim 4, wherein: the left end of the intermediate shaft is supported on the left box body (3) through an intermediate shaft left bearing, and the right end of the intermediate shaft is supported on the right box body (8) through an intermediate shaft right bearing; the left end of the differential assembly (1) is supported on the left box body (3) through a differential left bearing, and the right end of the differential assembly (1) is supported on the right box body (8) through a differential right bearing; the first-stage gear is circumferentially fixed on the intermediate shaft, and the second-stage gear and the intermediate shaft are integrally formed.
9. The highly integrated electric drive assembly drive system of claim 4, wherein: a motor assembly is arranged in a motor cavity of the right box body (8), a rotor of the motor assembly is arranged on a motor shaft (11) and is positioned between a middle bearing (10) of the motor shaft and a right bearing (13) of the motor shaft, and the motor shaft (11) is driven to rotate through the rotation of the rotor.
10. The highly integrated electric drive assembly drive system of claim 4, wherein: the right box body (8) is formed by integrating a right shell of the speed reducer, a motor shell and a controller shell, so that the motor assembly, the speed reducer and the controller share the right box body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021861132.0U CN213017552U (en) | 2020-08-31 | 2020-08-31 | High-integration electric drive assembly transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021861132.0U CN213017552U (en) | 2020-08-31 | 2020-08-31 | High-integration electric drive assembly transmission system |
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| Publication Number | Publication Date |
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| CN213017552U true CN213017552U (en) | 2021-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021861132.0U Active CN213017552U (en) | 2020-08-31 | 2020-08-31 | High-integration electric drive assembly transmission system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022120760A1 (en) | 2022-08-17 | 2024-02-22 | Bayerische Motoren Werke Aktiengesellschaft | Motor vehicle drive device with roller bearings |
-
2020
- 2020-08-31 CN CN202021861132.0U patent/CN213017552U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022120760A1 (en) | 2022-08-17 | 2024-02-22 | Bayerische Motoren Werke Aktiengesellschaft | Motor vehicle drive device with roller bearings |
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