Drive axle assembly and automobile
By integrating the motor and reducer into the same housing through an integrated shell structure and reinforcing rib design, the NVH problem of the drive axle assembly is solved, the weight and cost are reduced, the transmission efficiency is improved, and the vehicle's range is guaranteed.
Patent Information
- Application Number
- CN202520314255.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-02-24
AI Technical Summary
In existing drive axle assemblies, controlling the coaxiality of the motor and reducer is difficult, multiple housings lead to poor NVH, are prone to oil leaks, and result in high overall weight and cost, affecting the vehicle's range.
It adopts an integrated shell structure with an internal cavity containing reinforcing ribs. The motor and reducer are housed in the same cavity and connected by a shaft. The motor controller can be detachably connected to the outside of the shell.
It improves NVH performance, reduces overall weight and cost, increases transmission efficiency, and ensures the vehicle's range.
Smart Images
Figure CN223803346U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of drive axle assembly structure, in particular to a drive axle assembly and a vehicle. BACKGROUND
[0002] In the current drive axle assembly of the new energy vehicle market, the front and rear end covers of the motor are respectively connected with the drive axle main reducer assembly and the drive axle housing (i.e. the existing drive axle assembly is a split structure with multiple housings), so that the motor and the reducer can only be connected through two shafts and key connectors, and the coaxiality control of the two is difficult; in addition, multiple housings will cause poor NVH of the entire transmission system, and easily cause oil leakage, which is easy to cause customer complaints; further, the above structure will also make the total mass of the entire system larger, the cost higher and affect the vehicle endurance. CONTENT OF THE UTILITY MODEL
[0003] Therefore, the purpose of the present application is to provide a drive axle assembly and a vehicle to solve the problems of large mass and poor NVH of the existing drive axle assembly.
[0004] According to the above purpose, according to the first aspect of the present application, a drive axle assembly is provided, wherein the drive axle assembly comprises:
[0005] A housing is formed as an integral structure; an accommodating cavity is formed in the interior of the housing, and a reinforcing portion is further formed on the housing;
[0006] A drive assembly is arranged in the accommodating cavity.
[0007] Preferably, the reinforcing portion comprises a plurality of reinforcing ribs.
[0008] Preferably, a plurality of the reinforcing ribs are staggered distributed on the outer surface of the housing.
[0009] Preferably, the reinforcing portion comprises a plurality of first reinforcing ribs and a plurality of second reinforcing ribs; the first reinforcing ribs extend along a first direction, and a plurality of the first reinforcing ribs are arranged at intervals along a second direction; the second reinforcing ribs extend along the second direction, and a plurality of the second reinforcing ribs are arranged at intervals along the first direction.
[0010] The first direction is perpendicular to the second direction.
[0011] Preferably, the housing is formed as a casting.
[0012] Preferably, along the second direction, an opening is formed at the front end of the housing, and a corresponding end cover is detachably connected to the opening; the drive assembly is arranged in the accommodating cavity through the opening.
[0013] Preferably, the driving assembly comprises a motor and a reducer, and the motor and the reducer are connected by a shaft.
[0014] Preferably, left and right ends of the shell are respectively formed with through holes in communication with the accommodating cavity in the first direction; and the two through holes are respectively connected with corresponding bridge pipes.
[0015] Preferably, the driving bridge assembly further comprises a motor controller, which is detachably connected to the outer side wall of the shell.
[0016] According to the second aspect of the present application, an automobile is provided, wherein the automobile comprises the driving bridge assembly as described above.
[0017] According to the driving assembly and the automobile of the present application, the shell of the driving bridge assembly is provided as an integrated structure, compared with the split multiple shells in the existing driving bridge assembly, the integrated shell in the present application has better NVH performance, and the total mass is effectively reduced (the connecting structure between different shells can be omitted), so that the cost can be reduced and the vehicle endurance can be ensured. In addition, the shell in the present application is formed with an accommodating cavity, and the driving assembly such as a motor and a reducer is arranged in the accommodating cavity.
[0018] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.
[0020] Fig. 1 is a top view schematic diagram of the driving bridge assembly of the embodiment of the present application;
[0021] Fig. 2 is a front view schematic diagram of the driving bridge assembly of the embodiment of the present application.
[0022] Figure legend: 1-shell; 2-motor controller; 3-bridge pipe; 4-end cover. DETAILED DESCRIPTION
[0023] The following detailed description is presented to aid the reader in gaining a comprehensive understanding of the methods, apparatuses, and / or systems described herein. However, various changes, modifications, and equivalents can be used, and thus particular embodiments described herein are not intended as being exhaustive of what the present disclosure can provide. For example, although processes are described with regard to the present disclosure, such processes can include more, fewer, or only a single process. Additionally, some processes can not be implemented even though they are described. Moreover, although processes are described herein as various separate processes, which can be performed by different systems, such processes can not necessarily be performed by different systems and the order of some processes can be changed, including that certain processes could be performed in an iterative or parallel manner. Additionally, various features that are described herein can be implemented as hardware, software, firmware, or combinations thereof, and can be implemented within one or more processors or external to one or more processors, including being implemented across multiple processors. Further, it will be appreciated that features described herein as being implemented with or across one or more processors can be implemented by one or more other processors.
[0024] The features described herein can be implemented in different forms and are not to be construed as limited to the examples described herein. Rather, the described examples have been provided for illustrative purposes so that those skilled in the art will be able to implement the methods, apparatuses, and / or systems described herein in a variety of ways.
[0025] Throughout the specification, when an element (such as a layer, region, or substrate) is referred to as being "on" another element, "connected to" another element, "coupled to" another element, "adjacent to" another element, "on top of" another element, or "covering" another element, it can be directly on, connected to, coupled to, adjacent to, on top of, or covering the other element, or one or more other elements can be interposed therebetween. In contrast, when an element is referred to as being "directly on," "directly connected to," "directly coupled to," "directly adjacent to," "directly on top of," or "directly covering" another element, there are no other elements interposed therebetween.
[0026] As used herein, the term "and / or" includes any one of the listed items and any combination of two or more of the listed items.
[0027] Although terms such as "first" and "second" can be used herein to describe various elements, components, regions, layers, or sections, these elements, components, regions, layers, or sections should not be limited by these terms. Rather, these terms are only used to distinguish one element, component, region, layer, or section from another element, component, region, layer, or section. Thus, the first element, component, region, layer, or section described in the examples described herein could also be called the second element, component, region, layer, or section without departing from the teachings of the examples.
[0028] For ease of description, spatially relative terms, such as "on", "upper", "lower", "above", and "below", can be used herein for the purpose of illustrating one element's relationship to another element in the drawings. Such spatially relative terms are intended to encompass different orientations of the device in use or operation, in addition to the orientations depicted in the drawings. For example, if the device in the drawings is turned over, elements described as being "on" or "above" other elements would then be oriented "below" or "under" the other elements. Thus, the term "on" can encompass both an orientation of above and below. The device can be otherwise oriented (e.g., rotated 90 degrees or at other orientations) and the spatially relative terms used herein interpreted accordingly.
[0029] The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and "has", "having" as used herein, are specifically intended to be construed as open-ended terms (i.e., the terms do not exclude the presence of other elements or options).
[0030] Variations in shapes that are shown in the drawings can occur as a result of manufacturing processes and / or tolerances. Thus, the examples described herein are not limited to the precise shapes shown in the drawings, but include variations in shapes that occur as a result of manufacturing processes.
[0031] The features of the examples described herein can be combined in a variety of ways as will be apparent after the disclosure of the application is understood. In addition, although various examples are described herein, other configurations are possible.
[0032] According to a first aspect of the present application, there is provided a drive axle assembly, as shown in Figs. 1-2 The drive axle assembly comprises a housing and a driving assembly, the housing is formed as an integral structure, in addition, an accommodating cavity is formed in the interior of the housing, and a reinforcing portion is formed on the surface of the housing. In the following, the specific structure and connection relationship of each part of the drive axle assembly according to the present application will be described in detail.
[0033] In the present embodiment, as Figs. 1-2As shown, the reinforcing portion includes a plurality of reinforcing ribs, and the plurality of reinforcing ribs are staggered on the outer surface of the shell 1, so as to effectively increase the rigidity and strength of the overall structure of the shell 1. Specifically, the reinforcing portion includes a plurality of first reinforcing ribs and a plurality of second reinforcing ribs; the first reinforcing ribs extend along a first direction, and the plurality of first reinforcing ribs are arranged at intervals along a second direction; the second reinforcing ribs extend along the second direction, and the plurality of second reinforcing ribs are arranged at intervals along the first direction. Preferably, the first direction is perpendicular to the second direction, so as to maximize the above technical effects (i.e., to improve the rigidity and strength of the overall structure of the shell 1).
[0034] It should be noted that the number, specification and spacing of the first reinforcing ribs and the second reinforcing ribs are not specifically limited, and should be determined comprehensively according to actual conditions such as the specification and shape of the shell 1, as long as the above technical effects can be achieved. In addition, the specific directions of the first direction and the second direction are not limited, for example, in the embodiment, the first direction is the horizontal direction (i.e. Fig. 1 the direction indicated by the arrow in the middle); or, the first direction can also be arranged to extend obliquely.
[0035] It should be further noted that in the embodiment, the shell 1 is formed as a casting, and the above reinforcing portion is also integrally cast synchronously with the shell 1, so as to further improve the strength and rigidity of the overall structure of the shell 1, to ensure the stability of the overall structure of the drive axle assembly, and to effectively improve the NVH performance of the drive axle assembly.
[0036] In addition, in the embodiment, as shown in Figs. 1-2 along the second direction, the front end of the shell 1 is formed with an opening, and a corresponding end cover 4 is detachably connected to the opening (the end cover 4 can be connected to the shell 1 in a threaded connection or a pin connection or a clamping connection, etc.), and the drive assembly is arranged at a corresponding position in the accommodating cavity through the opening, that is, when the drive assembly is assembled, the end cover 4 is connected to the opening to seal the accommodating cavity. Further, the drive assembly includes a motor and a reducer, and based on the fact that the two are arranged in the same space, the motor and the reducer can be connected by a shaft, effectively improving the transmission efficiency.
[0037] In the embodiment, as shown in Figs. 1-2 along the first direction, the left end and the right end of the shell 1 are respectively formed with through holes communicating with the accommodating cavity, and the two through holes are respectively connected with corresponding axle pipes 3. Specifically, the axle pipe 3 can be first press-fitted with the through hole, and then the two are fixed by plug welding. The drive axle assembly further includes a motor controller 2, which is detachably connected to the outer side wall of the shell 1 (the motor controller 2 can be connected to the shell 1 in a threaded connection or a pin connection or a clamping connection, etc.).
[0038] According to the drive assembly of the utility model, the shell 1 of the drive axle assembly is arranged as an integral structure, compared with the split type multiple shells 1 in the prior art drive axle assembly, the integral shell 1 in the application has better NVH performance, and the total mass is effectively reduced (the connecting structure and the connecting member such as the key between different shells 1 can be omitted), so that the cost can be reduced and the vehicle endurance can be ensured. In addition, the shell 1 in the application is formed with a containing cavity, and the drive assembly such as a motor and a speed reducer is arranged in the containing cavity, so that the motor and the speed reducer can be connected through the same shaft, and the transmission efficiency is effectively improved.
[0039] According to the second aspect of the utility model, an automobile is provided, wherein the automobile comprises the drive axle assembly as described above.
[0040] Finally, it should be noted that: the above-described embodiments are merely specific embodiments of the present application, which are used to illustrate the technical solutions of the present application, but not to limit them, and the protection scope of the present application is not limited thereto, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand: any person skilled in the art in the technical range disclosed by the present application can modify or easily think of changes to the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications, changes or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and all should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A drive axle assembly characterized by, The drive axle assembly comprises: a housing formed as an integral structure; an accommodating cavity is formed in the interior of the housing; a reinforcing portion is further formed on the housing; a drive assembly arranged in the accommodating cavity.
2. The drive axle assembly of claim 1, wherein, The reinforcing portion comprises a plurality of reinforcing ribs.
3. The drive axle assembly of claim 2, wherein, The plurality of reinforcing ribs are staggered on the outer surface of the housing.
4. The drive axle assembly of claim 3, wherein, The reinforcing portion comprises a plurality of first reinforcing ribs and a plurality of second reinforcing ribs; the first reinforcing ribs extend along a first direction, and the plurality of first reinforcing ribs are arranged at intervals along a second direction; the second reinforcing ribs extend along the second direction, and the plurality of second reinforcing ribs are arranged at intervals along the first direction. The first direction is perpendicular to the second direction.
5. The drive axle assembly of claim 4, wherein, The housing is formed as a casting.
6. The drive axle assembly of claim 4, wherein, Along the second direction, an opening is formed at the front end of the housing, and a corresponding end cover is detachably connected to the opening; the drive assembly is arranged in the accommodating cavity through the opening.
7. The drive axle assembly of claim 6, wherein, The drive assembly comprises a motor and a speed reducer, and the motor and the speed reducer are connected through a shaft.
8. The drive axle assembly of claim 4, wherein, Along the first direction, a through hole is formed at the left end and the right end of the housing respectively, and the through holes are in communication with the accommodating cavity; two bridge pipes are respectively connected to the through holes.
9. The drive axle assembly of claim 1, wherein, The drive axle assembly further comprises a motor controller, and the motor controller is detachably connected to the outer side wall of the housing.
10. An automobile characterized by comprising: The automobile comprises the drive axle assembly according to any one of claims 1 to 9.