Wheel end driving device structure

Abstract

The utility model discloses a wheel end driving device structure which comprises a shell assembly, an end cover assembly, a rotor assembly and a speed reducer assembly. The structure scheme that the axial magnetic flux disc type motor is matched with the planetary reducer is adopted, the axial magnetic flux disc type motor has the advantages of being small in size, light in weight, high in power density and high in efficiency, the speed reducer is additionally arranged for speed reduction and torque increasing, the output torque of the motor is improved, and the structure scheme can meet the requirement for small-size and large-torque output.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric automobile wheel end drive device design technical field, concretely relates to a wheel end drive device structure. BACKGROUND

[0002] With the rapid development of new energy automobile industry of our country, wheel end drive scheme gets extensive application, with the higher and higher requirement of whole vehicle to space and weight, the smaller and smaller volume and weight requirement and the higher and higher power density requirement of wheel end drive device, to satisfy the demand of whole vehicle to space arrangement and weight, under the premise of guaranteeing performance, how to reduce the volume and weight of product and cost is the difficult problem that our industry needs to conquer.

[0003] The existing wheel end drive device is mostly single motor structure of radial magnetization, and the radial magnetization motor has the characteristics of large volume, low power density and low material utilization rate, and this scheme increases the weight and cost. UTILITY MODEL CONTENT

[0004] The utility model discloses a wheel end drive device structure, through adopting the structure scheme of axial flux disc type motor with planetary reducer, the axial flux disc type motor has the characteristics of small volume, light weight, high power density and high efficiency, and the reducer is added to reduce the speed and increase the torque, and the motor output torque is improved, to solve the problem in the background art.

[0005] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme: a wheel end drive device structure, including shell assembly, end cover assembly, rotor assembly, reducer assembly, the shell assembly is the bearing device of each assembly component, the end cover assembly is assembled on the shell assembly through screw, the rotor assembly is assembled in the middle of shell assembly and end cover assembly, is supported and fixed through bearing, is sealed through oil seal, the reducer assembly is assembled on the shell assembly through screw, is supported and fixed through bearing, is sealed through oil seal.

[0006] Further, the shell assembly includes a shell, a connector, a first stator disc, a Hall sensor and a first oil seal.

[0007] Further, the first stator disc is an axial flux structure, and the first stator disc is assembled on the shell through screw and cooled by the shell.

[0008] Further, the end cover assembly includes an end cover, a second stator disc and a second oil seal.

[0009] Further, the second stator disc is an axial flux structure, and the second stator disc is assembled on the end cover through screw and cooled by the end cover.

[0010] Further, the rotor assembly comprises a rotor disc, a motor shaft, a first bearing, a second bearing.

[0011] Further, the rotor disc is an axial flux structure, and the rotor disc is assembled on the motor shaft through screws.

[0012] Further, the motor shaft output end is a gear, and the gear is a sun gear of a reducer.

[0013] Further, the reducer assembly comprises a reducer housing, a third bearing, a planet carrier, a planetary gear shaft, a needle bearing, a planetary gear, a fourth bearing, an inner ring gear and a third oil seal.

[0014] Further, the planet carrier is fixed on the reducer housing and the shell through the third bearing and the fourth bearing.

[0015] Further, the inner ring gear is fixed on the reducer housing through a spline structure. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments or the prior art. Obviously, the drawings described below are only exemplary, and for those skilled in the art, other drawings can be obtained from the provided drawings without creative labor.

[0017] The structures, proportions, sizes, etc. shown in the specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and do not define the limiting conditions for the implementation of the present application, so they do not have technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that the present application can produce, should still fall within the scope of the technical content disclosed by the present application.

[0018] Figure 1 A wheel end driving device structure assembly schematic view is provided for the embodiment 1 of the present application.

[0019] Figure 2 A wheel end driving device structure shell assembly schematic view is provided for the embodiment 1 of the present application.

[0020] Figure 3 A wheel end driving device structure end cover assembly schematic view is provided for the embodiment 1 of the present application.

[0021] Figure 4 A wheel end driving device structure rotor assembly schematic view is provided for the embodiment 1 of the present application.

[0022] Figure 5 A wheel end driving device structure reduction gear assembly schematic view is provided for the embodiment 1 of the utility model,

[0023] Figure 1 Middle: 1 - housing assembly, 2 - end cover assembly, 3 - rotor assembly, 4 - reduction gear assembly. DETAILED DESCRIPTION

[0024] The following specific embodiments illustrate the embodiments of the utility model, and those skilled in the art can easily understand other advantages and effects of the utility model from the disclosed content of the specification. Obviously, the described embodiments are part of the embodiments of the utility model, not all. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0025] The existing wheel end driving device is mostly single motor structure with radial magnetization, and the radial magnetization motor has large volume and low efficiency. This scheme increases the weight and cost.

[0026] As shown in Figures 1 to 5 The embodiment provides a wheel end driving device structure, which comprises a housing assembly 1, an end cover assembly 2, a rotor assembly 3 and a reduction gear assembly 4. The housing assembly 1 comprises a housing 101, a connector 102, a first stator disc 103, a Hall sensor 104 and a first oil seal 105. The end cover assembly 2 comprises an end cover 201, a second stator disc 202 and a second oil seal 203. The rotor assembly 3 comprises a rotor disc 301, a motor shaft 302, a first bearing 303 and a second bearing 304. The reduction gear assembly 4 comprises a reduction gear housing 401, a third bearing 402, a planet carrier 403, a planetary gear shaft 404, a needle bearing 405, a planetary gear 406, a fourth bearing 407, an inner ring 408 and a third oil seal 409.

[0027] Specifically, the housing assembly 1 is a bearing device of each assembly component. The end cover assembly 2 is assembled on the housing assembly 1 by screws. The rotor assembly 3 is assembled between the housing assembly 1 and the end cover assembly 2, is supported and fixed by the first bearing 303 and the second bearing 304, and is sealed by the first oil seal 105 and the second oil seal 203. The reduction gear assembly 4 is assembled on the housing assembly 1 by screws, is supported and fixed by the third bearing 402 and the fourth bearing 407, and is sealed by the third oil seal 409.

[0028] The housing assembly 1 comprises a housing 101, a connector 102, a first stator disc 103, a Hall sensor 104 and a first oil seal 105.

[0029] The first stator disc 103 is directly mounted on the shell 101, and the first stator disc 103 is cooled by the shell 101.

[0030] The Hall sensor 104 can detect the magnetic field change of the rotor disc 301 and output a motor rotating speed signal.

[0031] The connector 102 is used as a motor wiring, and the wiring is convenient and reliable.

[0032] The end cover assembly 2 comprises an end cover 201, a second stator disc 202 and a second oil seal 203.

[0033] The second stator disc 202 is directly mounted on the end cover 201, and the second stator disc 202 is cooled by the end cover 201.

[0034] The rotor assembly 3 comprises a rotor disc 301, a motor shaft 302, a first bearing 303 and a second bearing 304, the rotor disc 301 is mounted on the motor shaft 302 by screws, and the motor shaft 302 is assembled with the shell 101 and the end cover 201 through the first bearing 303 and the second bearing 304.

[0035] The output end of the motor shaft 302 is a gear structure, and the gear is a sun gear of a speed reducer.

[0036] The speed reducer assembly 4 comprises a speed reducer housing 401, a third bearing 402, a planet carrier 403, a planet gear shaft 404, a needle bearing 405, a planet gear 406, a fourth bearing 407, an inner ring 408 and a third oil seal 409.

[0037] The planet gear 406 is fixed on the planet carrier 403 through the planet gear shaft 404 and the needle bearing 405, the inner ring 408 is mounted on the speed reducer housing 401, the planet carrier 403 is assembled on the speed reducer housing 401 and the shell 101 through the third bearing 402 and the fourth bearing 407, and is sealed by the third oil seal 409.

[0038] Although the utility model has been described in detail above with general description and specific embodiments, some modifications or improvements can be made on the basis of the utility model, which is obvious to those skilled in the art. Therefore, these modifications or improvements made on the basis of not deviating from the spirit of the utility model all belong to the scope of protection required by the utility model.

Claims

1. A wheel-end drive device structure, characterized in that, It includes a housing assembly (1), an end cap assembly (2), a rotor assembly (3), and a reducer assembly (4); the housing assembly (1) is a load-bearing device for each assembly component; the end cap assembly (2) is assembled onto the housing assembly (1) by screws; the rotor assembly (3) is assembled between the housing assembly (1) and the end cap assembly (2); and the reducer assembly (4) is assembled onto the housing assembly (1) by screws.

2. The wheel-end drive device structure according to claim 1, characterized in that, The housing assembly (1) includes a housing (101), a connector (102), a first stator disk (103), a Hall sensor (104), and a first oil seal (105).

3. The wheel-end drive device structure according to claim 2, characterized in that, The first stator disk (103) is an axial magnetic flux structure, and the first stator disk (103) is assembled on the housing (101) by screws.

4. The wheel-end drive device structure according to claim 1, characterized in that, The end cap assembly (2) includes an end cap (201), a second stator disk (202), and a second oil seal (203).

5. The wheel-end drive device structure according to claim 4, characterized in that, The second stator disk (202) is an axial magnetic flux structure, and the second stator disk (202) is assembled on the end cover (201) by screws.

6. The wheel-end drive device structure according to claim 1, characterized in that, The rotor assembly (3) includes a rotor disk (301), a motor shaft (302), a first bearing (303), and a second bearing (304).

7. The wheel-end drive device structure according to claim 6, characterized in that, The rotor disk (301) is an axial magnetic flux structure, and the rotor disk (301) is assembled on the motor shaft (302) by screws.

8. The wheel-end drive device structure according to claim 6, characterized in that, The output end of the motor shaft (302) is a gear.

9. The wheel-end drive device structure according to claim 1, characterized in that, The reducer assembly (4) includes a reducer housing (401), a third bearing (402), a planetary carrier (403), a planetary gear shaft (404), a needle roller bearing (405), a planetary gear (406), a fourth bearing (407), an internal gear ring (408), and a third oil seal (409).

10. A wheel-end drive device structure according to claim 1 or 9, characterized in that, The planetary carrier (403) included in the reducer assembly (4) is fixed to the reducer housing (401) and the housing (101) by a third bearing (402) and a fourth bearing (407).

11. The wheel-end drive device structure according to claim 9, characterized in that, The internal gear ring (408) is fixed to the reducer housing (401) by a spline structure.

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