CN219198042U - Axial differential assembly and vehicle - Google Patents

Abstract

The utility model belongs to the technical field of vehicles, and discloses an axial differential assembly and a vehicle. The axial differential assembly includes a first housing, a second housing, and a driven gear. The second shell is detachably buckled and connected with the first shell; the driven gear is coaxially arranged outside the first shell and is connected with the first shell through a first welding seam and a second welding seam which are arranged at intervals. The axial differential assembly effectively improves the structural connection strength, and is beneficial to achieving the light weight target.

Description

Axial differential assembly and vehicle

Technical Field

The utility model relates to the technical field of vehicles, in particular to an axial differential assembly and a vehicle.

Background

A differential of an automobile is a mechanism that can rotate left and right (or front and rear) drive wheels at different rotational speeds. Axial differentials are commonly used in smaller size passenger vehicles.

The existing axial differential is assembled by adopting a laser welding technology instead of the traditional screwing and riveting mode. The laser welding technology forms a single welding line on the axial differential mechanism, in order to ensure the connection strength, the welding depth is designed relatively larger, the heat input amount is larger during welding, larger structural restraint force exists at the welding line, the welded structure cannot adapt through deformation, so that larger tensile stress can be generated at the welding line, the risk of cracking of the subsequent welding line is obviously improved, the bearing capacity of the welding line is insufficient, the structural connection strength is insufficient, and the service life is short.

Accordingly, there is a need for an axial differential assembly and a vehicle that address the above issues.

Disclosure of Invention

According to one aspect of the present utility model, it is an object to provide an axial differential assembly that effectively increases structural connection strength and facilitates achieving the light weight objective.

To achieve the purpose, the utility model adopts the following technical scheme:

an axial differential assembly, comprising:

a first housing;

the second shell is detachably buckled and connected with the first shell;

the driven gear is coaxially arranged outside the first shell and is connected with the first shell through a first welding seam and a second welding seam which are arranged at intervals.

As the preferable scheme of the axial differential assembly provided by the utility model, the periphery of the opening of the first shell is provided with the annular connecting part in a surrounding way, the diameter of the annular connecting part is larger than that of the opening of the first shell, the driven gear comprises a gear connecting part, and the first welding seam and the second welding seam are formed between the outer side of the annular connecting part and the gear connecting part.

As a preferable scheme of the axial differential assembly provided by the utility model, the annular connecting part comprises a first shell matching part and a second shell matching part which are sequentially arranged along the thickness direction, and the outer diameter of the first shell matching part is larger than that of the second shell matching part;

the gear connecting part comprises a first gear matching part and a second gear matching part which are sequentially arranged along the thickness direction, and the inner diameter of the first gear matching part is larger than that of the second gear matching part;

the first shell matching part is propped against the first gear matching part and is located on the upper end face of the second gear matching part, the second shell matching part is propped against the second gear matching part, the first welding seam is formed between the first shell matching part and the first gear matching part, and the second welding seam is formed between the second shell matching part and the second gear matching part.

As a preferred scheme of the axial differential assembly provided by the utility model, a first shell groove and a first gear groove are respectively formed on one side, which is abutted against each other, of the first shell matching part and the first gear matching part, and the first shell groove and the first gear groove are buckled and communicated to form a first annular space;

the second shell matching part and one side of the second gear matching part, which is abutted against each other, are respectively provided with a second shell groove and a second gear groove, and the second shell groove is buckled and communicated with the second gear groove to form a second annular space.

As a preferred scheme of the axial differential assembly provided by the utility model, one side of the first shell matching part and one side of the first gear matching part, which are abutted against each other, are respectively provided with a first shell chamfer surface and a first gear chamfer surface at positions close to the upper end surface of the annular connecting part and the upper end surface of the gear connecting part, a first groove is formed between the first shell chamfer surface and the first gear chamfer surface, and the first groove is used for accommodating a part of the first welding seam;

the second shell matching part and one side of the second gear matching part, which are abutted against each other, are respectively provided with a second shell chamfer surface and a second gear chamfer surface at positions close to the lower end surface of the annular connecting part and the lower end surface of the gear connecting part, a second groove is formed between the second shell chamfer surface and the second gear chamfer surface, and the second groove is used for accommodating a part of the second welding seam.

As a preferable scheme of the axial differential assembly, the axial differential assembly further comprises a connecting piece, wherein the connecting piece is detachably arranged at the periphery of the annular connecting part and the opening of the second shell.

As the preferable scheme of the axial differential assembly provided by the utility model, a plurality of connecting pieces are arranged, and the connecting pieces are uniformly distributed and connected on the circumferential edges of the annular connecting part and the opening of the second shell along the circumferential direction.

As the preferable scheme of the axial differential assembly provided by the utility model, a first annular groove and a second annular groove are formed along the circumferential direction of the driven gear, the first annular groove is formed from the upper end surface of the driven gear, and the depth of the first annular groove is larger than the effective welding depth of the first welding seam; the second ring groove is formed in the lower end face of the driven gear, and the depth of the second ring groove is larger than the effective welding depth of the second welding seam.

As a preferred aspect of the axial differential assembly provided by the present utility model, the axial differential assembly further includes a gear assembly disposed in the first housing and the second housing and configured to achieve differential transmission.

According to another aspect of the utility model, it is an object to provide a vehicle comprising an axial differential assembly as defined in any one of the above aspects.

The utility model has the beneficial effects that:

the utility model provides an axial differential assembly which comprises a first shell, a second shell and a driven gear. The second shell is detachably buckled and connected with the first shell. That is, the first housing and the second housing can be connected to form a mounting space that facilitates the mounting of other components of the axial differential assembly. The driven gear is coaxially arranged outside the first shell and is connected with the first shell through a first welding seam and a second welding seam which are arranged at intervals. That is, the driven gear and the first housing are connected by the first weld and the second weld, and the connecting bolt or the connecting rivet between the first housing and the driven gear can be omitted, thereby realizing the light-weight target and ensuring the structural connection strength.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings needed in the description of the embodiments of the present utility model, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the contents of the embodiments of the present utility model and these drawings without inventive effort for those skilled in the art.

FIG. 1 is a schematic structural view of an axial differential assembly provided in an embodiment of the present utility model;

FIG. 2 is an enlarged view of a portion of the structure labeled A in FIG. 1;

FIG. 3 is a schematic structural view of a first housing according to an embodiment of the present utility model;

FIG. 4 is an enlarged view of a portion of the structure labeled B in FIG. 3;

FIG. 5 is a schematic view of a driven gear according to an embodiment of the present utility model;

fig. 6 is an enlarged view of a portion of the structure labeled C in fig. 5.

In the figure:

100. a first housing; 110. a first housing mating portion; 111. a first housing groove; 112. a first housing chamfer; 120. a second housing mating portion; 121. a second housing groove; 122. a second housing chamfer;

200. a second housing;

300. a driven gear; 310. a first gear engaging portion; 311. a first gear groove; 312. a first gear chamfer; 320. a second gear engaging portion; 321. a second gear groove; 322. a second gear chamfer; 330. a first ring groove; 340. a second ring groove;

400. a first annular space;

500. a second annular space;

600. a first groove;

700. a second groove;

800. a connecting piece; 810. a gasket;

900. a gear drive assembly; 910. a cross shaft; 920. a planetary gear; 930. planetary gear gaskets; 940. a side gear; 950. side gear gaskets.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", "left", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

The embodiment provides an axial differential assembly and a vehicle, wherein the vehicle comprises the axial differential assembly provided by the embodiment. Fig. 1 shows a schematic structural view of an axial differential assembly provided in an embodiment of the present utility model, and referring to fig. 1, the axial differential assembly includes a first housing 100, a second housing 200, a driven gear 300, and a gear assembly 900. The second housing 200 is detachably fastened to the first housing 100 to form an installation space therebetween, and the gear assembly 900 is disposed in the installation space and configured to implement differential transmission. The driven gear 300 is coaxially disposed outside the first housing 100 and is connected to the first housing 100 by a first weld and a second weld disposed at intervals. That is, the driven gear 300 and the first housing 100 are connected by the first and second welds, and a connecting bolt or a connecting rivet between the first housing 100 and the driven gear 300 can be omitted, thereby achieving a light weight target and securing structural connection strength.

Specifically, the gear assembly 900 includes a spider 910, a planet gear 920, a planet gear shim 930, a side gear 940, and a side gear shim 950. The number of the planetary gears 920 and the number of the planetary gear gaskets 930 are 4, and the planetary gear gaskets 930 are sandwiched between the planetary gears 920 and the inner wall of the installation space. The number of the side gear 940 and the side gear spacer 950 is 2, respectively, and the side gear spacer 950 is interposed between the side gear 940 and the inner wall of the installation space. The components of the gear assembly 900 are all of the prior art, and the transmission relationship of the gear assembly is not described herein.

FIG. 2 shows a close-up view of the structure labeled A in FIG. 1; FIG. 3 is a schematic structural view of a first housing according to an embodiment of the present utility model; FIG. 4 shows a close-up view of the structure labeled B in FIG. 3;

fig. 5 shows a schematic structural view of a driven gear provided by an embodiment of the present utility model; fig. 6 shows a partial enlarged view of the structure marked C in fig. 5. Referring to fig. 2 to 5, an annular connection portion is formed around the periphery of the opening of the first housing 100, and the diameter of the annular connection portion is larger than that of the opening of the first housing 100. The driven gear 300 includes a gear connecting portion, and the first weld and the second weld are formed between an outer side of the ring-shaped connecting portion and the gear connecting portion.

Specifically, the annular connection portion includes a first housing fitting portion 110 and a second housing fitting portion 120 that are sequentially disposed in a thickness direction, the first housing fitting portion 110 having an outer diameter larger than an outer diameter of the second housing fitting portion 120, wherein the thickness direction of the annular connection portion is perpendicular to an axial direction of the first housing 100. The gear connection part includes a first gear fitting part 310 and a second gear fitting part 320 sequentially disposed in a thickness direction, the first gear fitting part 310 having an inner diameter larger than that of the second gear fitting part 320, wherein the thickness direction of the gear connection part is perpendicular to an axial direction of the driven gear 300. When the driven gear 300 is mounted outside the first housing 100, the first housing mating portion 110 abuts against the first gear mating portion 310 and is located on the upper end surface of the second gear mating portion 320, the second housing mating portion 120 abuts against the second gear mating portion 320, the first welding seam is formed between the first housing mating portion 110 and the first gear mating portion 310, and the second welding seam is formed between the second housing mating portion 120 and the second gear mating portion 320.

More specifically, the first housing mating section 110 and the first gear mating section 310 are provided with a first housing chamfer 112 and a first gear chamfer 312 at positions near the upper end surface of the annular connecting section and near the upper end surface of the gear connecting section, respectively, on the sides thereof abutting against each other. Similarly, the second housing engaging portion 120 and the second gear engaging portion 320 are provided with a second housing chamfer surface 122 and a second gear chamfer surface 322 at positions near the lower end surface of the annular connecting portion and near the lower end surface of the gear connecting portion, respectively, on the sides thereof abutting against each other. In the present embodiment, the chamfer angles of the first housing chamfer face 112, the second housing chamfer face 122, the first gear chamfer face 312 and the second gear chamfer face 322 are all preferably 45 °.

A tapered first groove 600 is formed between the first housing chamfer 112 and the first gear chamfer 312, the first groove 600 for receiving a portion of the first weld. A tapered second groove 700 is formed between the second housing chamfer 122 and the second gear chamfer 322, the second groove 700 for receiving a portion of the second weld. The depth of the first and second grooves 600 and 700 is preferably 0.3mm, which can prevent the problem of excessive height of the surface of the weld during the subsequent welding.

More specifically, the first housing groove 111 and the first gear groove 311 are formed on the sides of the first housing mating part 110 and the first gear mating part 310, respectively, which are abutted against each other. The upper edge of the first housing groove 111 is 2mm from the lower edge of the first housing chamfer 112, and the upper edge of the first gear groove 311 is likewise 2mm from the lower edge of the first gear chamfer 312. A second housing groove 121 and a second gear groove 321 are formed at a side where the second housing engaging portion 120 and the second gear engaging portion 320 abut against each other, respectively. The lower edge of the second housing groove 121 is 2mm from the upper edge of the second housing chamfer 122, and the lower edge of the second gear groove 321 is likewise 2mm from the upper edge of the second gear chamfer 322.

The first housing groove 111 and the first gear groove 311 are in snap-fit communication to form a first annular space 400; the second housing groove 121 and the second gear groove 321 are in snap-fit communication to form a second annular space 500. The first annular space 400 and the second annular space 500 are circumferentially disposed around the outer circumference of the annular connecting portion and are offset between the annular connecting portion and the driven gear 300.

Preferably, a first ring groove 330 and a second ring groove 340 are formed along the circumferential direction of the driven gear 300, wherein the first ring groove 330 is formed from the upper end surface of the driven gear 300, and the depth of the first ring groove is greater than the effective welding depth of the first welding seam; the second ring groove 340 is formed from the lower end surface of the driven gear 300, and has a depth greater than the effective depth of the second weld. Through the arrangement, the welding structure stress at the corresponding position can be effectively reduced.

With continued reference to fig. 1, the axial differential assembly further includes a connector 800, the connector 800 being detachably disposed at the annular connection portion and the opening periphery of the second housing 200. The connecting piece 800 may be a fastening bolt, wherein a head of the fastening bolt abuts against a lower end of the annular connecting portion, and a rod of the fastening bolt penetrates through the annular connecting portion and is then screwed to a periphery of the opening of the second housing 200.

Further, the number of the connectors 800 is plural, and the plurality of connectors 800 are uniformly distributed along the circumferential direction and connected to the annular connecting portion and the opening periphery of the second housing 200. Through the arrangement, the stress uniformity of the connection part of the annular connection part and the second shell 200 is improved, so that the connection reliability of the annular connection part and the second shell is ensured.

Still further, in order to improve reliability of abutment between the head of the connector 800 and the annular connecting portion, to prevent the problem of the connector 800 being loosened due to rotation of the head of the connector 800 relative to the annular connecting portion, a spacer 810 is provided between the head of the connector 800 and the annular connecting portion. The spacer 810 may be made of a rubber material to increase friction between the head of the connector 800 and the annular connection.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. An axial differential assembly, comprising:

a first housing (100);

a second housing (200), wherein the second housing (200) is detachably connected to the first housing (100) in a buckling manner;

the driven gear (300) is coaxially arranged outside the first shell (100), and is connected to the first shell (100) through a first welding line and a second welding line which are arranged at intervals.

2. The axial differential assembly of claim 1, wherein an annular connection is circumferentially provided around an opening of the first housing (100), the annular connection having a diameter greater than the diameter of the opening of the first housing (100), the driven gear (300) including a gear connection, the first and second weld being formed between an outer side of the annular connection and the gear connection.

3. The axial differential assembly according to claim 2, wherein the annular connecting portion includes a first housing fitting portion (110) and a second housing fitting portion (120) that are disposed in order in a thickness direction, an outer diameter of the first housing fitting portion (110) being larger than an outer diameter of the second housing fitting portion (120);

the gear connecting part comprises a first gear matching part (310) and a second gear matching part (320) which are sequentially arranged along the thickness direction, wherein the inner diameter of the first gear matching part (310) is larger than the inner diameter of the second gear matching part (320);

the first shell matching part (110) abuts against the first gear matching part (310) and is located on the upper end face of the second gear matching part (320), the second shell matching part (120) abuts against the second gear matching part (320), a first welding seam is formed between the first shell matching part (110) and the first gear matching part (310), and a second welding seam is formed between the second shell matching part (120) and the second gear matching part (320).

4. An axial differential assembly according to claim 3, characterized in that a first housing groove (111) and a first gear groove (311) are respectively formed on one side, against which the first housing mating portion (110) and the first gear mating portion (310) are abutted, and the first housing groove (111) and the first gear groove (311) are in snap-fit communication to form a first annular space (400);

the second shell matching part (120) and the second gear matching part (320) are respectively provided with a second shell groove (121) and a second gear groove (321) on one side where the second shell matching part and the second gear matching part are abutted against each other, and the second shell groove (121) and the second gear groove (321) are buckled and communicated to form a second annular space (500).

5. An axial differential assembly according to claim 3, wherein a side of the first housing mating portion (110) and the first gear mating portion (310) against each other is provided with a first housing chamfer face (112) and a first gear chamfer face (312) respectively at a position near the annular connecting portion upper end face and near the gear connecting portion upper end face, a first groove (600) being formed between the first housing chamfer face (112) and the first gear chamfer face (312), the first groove (600) being for accommodating a portion of the first weld;

one side that second casing cooperation portion (120) and second gear cooperation portion (320) are supported against each other sets up second casing chamfer face (122) and second gear chamfer face (322) in being close to annular connecting portion terminal surface and being close to the position of gear connecting portion terminal surface respectively, second casing chamfer face (122) with form second recess (700) between second gear chamfer face (322), second recess (700) are used for the holding a portion of second welding seam.

6. The axial differential assembly of claim 2, further comprising a connector (800), the connector (800) being removably disposed about the annular connection and the opening of the second housing (200).

7. The axial differential assembly of claim 6, wherein a plurality of said connecting members (800) are provided, and wherein a plurality of said connecting members (800) are circumferentially and uniformly connected to said annular connecting portion and to the peripheral edge of the opening of said second housing (200).

8. The axial differential assembly of claim 1, wherein a first ring groove (330) and a second ring groove (340) are formed along the circumferential direction of the driven gear (300), the first ring groove (330) being formed from the upper end surface of the driven gear (300) to a depth greater than the effective weld depth of the first weld; the second ring groove (340) is formed from the lower end surface of the driven gear (300) and has a depth greater than the effective welding depth of the second welding seam.

9. The axial differential assembly of any one of claims 1-8, further comprising a gear assembly (900), the gear assembly (900) disposed in the first housing (100) and the second housing (200) configured to effect differential transmission.

10. A vehicle comprising an axial differential assembly as defined in any one of claims 1-9.

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