CN217073935U - Vehicle rear axle lid and vehicle rear axle assembly and vehicle - Google Patents

Abstract

The utility model provides a vehicle rear axle lid and vehicle rear axle assembly and vehicle, vehicle rear axle lid are used for the opening on the shutoff vehicle rear axle housing to the body is formed with the open holding tank of one end including the lid body that is half ellipsoid shape in the lid body, and this holding tank is used for holding part main reducer, and in addition, still be equipped with oil filler point and energy-absorbing groove on the lid body, communicate in oil filler point and the holding tank, and the energy-absorbing groove is located the outer terminal surface of lid body. The utility model discloses a vehicle rear axle lid can reduce the ground clearance under its assembled state to can improve whole car trafficability characteristic and off-road property; in addition, the energy absorption grooves arranged on the outer end surface of the cover body are arranged on the cover body, so that the structural strength of the cover body can be improved, and meanwhile, when the tire is impacted in the front-rear direction through an obstacle, the energy absorption grooves can be automatically expanded outwards, so that the stress concentration can be greatly reduced, and the problems of cracking and deformation of a vehicle rear axle cover body can be effectively solved.

Description

Vehicle rear axle lid and vehicle rear axle assembly and vehicle

Technical Field

The utility model relates to the field of automotive technology, in particular to vehicle rear axle lid, simultaneously, the utility model discloses still relate to a vehicle rear axle assembly who is equipped with this vehicle rear axle lid and have the vehicle of this vehicle rear axle assembly.

Background

The rear axle housing is one of important parts in the integral rear axle and plays a role in supporting the load transmission force and moment of the rear axle. The rear axle housing cover is a part widely used on the integral rear axle housing of the automobile and is welded with the rear axle housing assembly into a whole, and the function of the rear axle housing cover mainly plays roles of bearing, transmitting force and moment and providing sealing and protecting effects for a transmission part.

The traditional rear axle housing cover is designed into a circular structure, the circular structure rear axle housing cover occupies a large space, and gear oil is filled in a large amount, so that the unsprung mass of the whole vehicle is heavy, and the operation stability is poor; in addition, in order to reduce rear axle housing and occupy the automobile body space, rear axle housing cover and reduction gear clearance undersize, the vehicle driving in-process, reduction gear and rear axle housing cover are more easily worn and torn to cause the gear oil mass to use much, with high costs.

When the wheels are impacted by obstacles or subjected to longitudinal fatigue tests, the rear axle housing cover is stressed in tension and is easy to deform or crack under the condition of insufficient design strength, the effects of bearing and force and moment transmission cannot be realized, and the problem of abnormal sound caused by interference between the deformed rear axle housing and the reducer gear can be caused. If in order to increase the intensity of rear-axle housing lid with rear-axle housing shell thickness thickening, can cause the partial quality of rear axle to become heavy for whole car oil consumption grow.

Traditional rear-axle housing atress warp, the fracture risk is big, and fatigue life is low, in case rear-axle housing lid became invalid and need to change the whole rear-axle housing assembly that changes, and the compensation loss after sale is many, causes the input of enterprise's consumption cost and artifical maintenance.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention is directed to a rear axle cover for a vehicle, which can improve the energy-absorbing and deformation-resistant performance and reduce the risk of deformation and cracking.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the utility model provides a vehicle rear axle lid for opening on the shutoff vehicle rear axle housing, vehicle rear axle lid is including being the lid body of half ellipsoid shape, be formed with the open holding tank of one end in the lid body, the holding tank is used for holding partial main reducer, just still be equipped with oil filler point and energy-absorbing groove on the lid body, the oil filler point with communicate in the holding tank, the energy-absorbing groove is located on the outer terminal surface of lid body.

Furthermore, the energy absorption groove is located in the middle of the cover body and extends from the top of the cover body to the edge of the cover body along the short axis direction of the cover body.

Further, the energy absorption grooves are two oppositely arranged.

Furthermore, the cross section of the energy absorption groove is C-shaped.

Further, a portion of the cover body is recessed into the accommodation groove, and a flat surface portion is formed on an outer end surface of the cover body, the oil filler hole being located on the flat surface portion.

Furthermore, the edge of the cover body is provided with a flange.

Furthermore, at least one weight reduction area is arranged on the cover body, and the cover body at the weight reduction area is recessed towards one side of the accommodating groove, so that the outer end surface of the cover body is a plane.

Compared with the prior art, the utility model discloses following advantage has:

vehicle rear axle lid, through set up the energy-absorbing groove that is located on its terminal surface on the lid body, not only can improve the structural strength of lid body, can directly transmit the effort to the lid body on when the tire receives the fore-and-aft direction impact through the barrier simultaneously, can make the automatic outside extension in energy-absorbing groove to but greatly reduced stress concentration value can effectively avoid vehicle rear axle lid fracture and deformation problem.

In addition, the energy absorption groove is arranged in the middle of the cover body and extends to the edge of the cover body from the short axis direction of the top of the cover body, so that the energy absorption and deformation resistance effects of the cover body can be further improved. The cross section of the energy absorption groove is designed into a C shape, so that the stress concentration on the cover body can be effectively reduced. The oil filling hole is arranged on the plane part, so that an oil filling plug can be conveniently installed in the oil filling hole.

In addition, through set up the turn-ups at the edge of lid body, be favorable to ensureing geometric tolerances, simultaneously can be convenient for with rear-axle housing welding to be favorable to improving welding reliability between the two. The weight reduction area is arranged on the cover body, so that the weight of the cover body can be further reduced.

Another object of the utility model is to provide a vehicle rear axle assembly, this vehicle rear axle assembly have and be formed with the open-ended rear axle housing, just the opening part is equipped with as above vehicle rear axle lid, just install the filler plug in the oil filler point. Another object of the present invention is to provide a vehicle, wherein the vehicle rear axle assembly is disposed on the vehicle.

The utility model discloses a vehicle and vehicle rear axle assembly are the same with the beneficial effect that above-mentioned vehicle rear axle lid has for prior art, no longer give unnecessary details here.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a front view structural diagram of a rear axle housing cover body according to a first embodiment of the present invention;

fig. 2 is a top view structural diagram of a rear axle housing cover according to a first embodiment of the present invention;

fig. 3 is a side view structural diagram of a rear axle housing cover according to a first embodiment of the present invention;

fig. 4 is a schematic perspective view of a rear axle housing cover according to a first embodiment of the present invention;

fig. 5 is a front view structural diagram of a rear axle assembly of a vehicle according to a second embodiment of the present invention;

fig. 6 is a top view structural diagram of a rear axle assembly of a vehicle according to a second embodiment of the present invention.

Description of reference numerals:

1. a cover body; 111. an energy absorption groove; 112. an oil filler hole; 113. a planar portion; 114. flanging; 115. a weight-reduction region; 1151. a first weight-reduction region; 1152. a second weight reduction zone; 116. a filler plug;

2. a rear axle housing; 21. an upper half shell; 22. a lower half-shell 22.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it should be noted that, if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the appearances of the terms first, second, etc. in this specification are not necessarily all referring to the same item, but are to be construed as indicating or implying any particular importance.

In addition, in the description of the present invention, the terms "mounted," "connected," and "connecting" are to be construed broadly unless otherwise specifically limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. To those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood in combination with the specific situation.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example one

The embodiment relates to a vehicle rear axle lid for the opening on the shutoff vehicle rear axle housing, this vehicle rear axle lid is formed with the open holding tank of one end including being half ellipsoidal lid body 1 in lid body 1 including being, this vehicle rear axle lid, and this holding tank is used for holding partial final drive. In addition, still be equipped with oil filler point 112 and energy-absorbing groove 111 on the lid body 1, oil filler point 112 communicates in with the holding tank, and energy-absorbing groove 111 is located the outer terminal surface of lid body 1.

In the vehicle rear axle cover body of the embodiment, the cover body 1 is designed into a semi-elliptical shape, so that the ground clearance can be improved in the assembled state, and the trafficability and the off-road property of the whole vehicle can be improved; in addition, the energy absorption groove 111 arranged on the outer end surface of the cover body 1 is arranged on the cover body 1, so that the structural strength of the cover body 1 can be improved, and meanwhile, when the tire is impacted in the front-back direction through an obstacle, acting force can be directly transmitted to the cover body 1, so that the energy absorption groove 111 can be automatically expanded outwards, the stress concentration can be greatly reduced, and the problems of cracking and deformation of a vehicle rear axle cover body can be effectively avoided.

Based on the above general description, an exemplary structure of the vehicle rear axle cover in the present embodiment, as shown in fig. 1 to 4, as described above, the cover body 1 of the present embodiment has a semi-elliptical shape, wherein the "semi-elliptical shape" herein includes both a regular semi-elliptical shape and a similar semi-elliptical shape in macroscopic view.

For better use effect, as a preferred embodiment, the energy absorption groove 111 is located in the middle of the cap body 1 in this embodiment, which can reduce the overall thickness of the cap body 1 and reduce the weight. Certainly, the energy-absorbing grooves 111 can also be arranged at other parts of the cover body 1 with concentrated stress, when the wheels are impacted by obstacles or in a longitudinal fatigue test, the tensile stress concentration value borne by the middle position of the rear axle cover is larger, so that the energy-absorbing grooves 111 are arranged at the middle position of the cover body 1, the stress concentration of the middle part of the vehicle rear axle cover body can be reduced, and the problems of cracking and deformation are avoided.

Further, the energy absorbing groove 111 extends from the top of the lid body 1 to the edge of the lid body 1 in the short axis direction of the lid body 1. As shown in the combined figure 4, the two sides of the rear axle housing are connected with the brake and the rear tires, when the wheels receive a longitudinal fatigue test, the rear axle housing is subjected to impact force transmitted by the tires, the impact force acts on the two ends of the rear axle housing from bottom to top, and the rear axle housing cover body is contained in the central position of the rear axle housing, so that the rear axle housing cover body is deformed by tensile stress, the energy absorption grooves 111 are arranged along the short shaft direction of the cover body 1, the deformation can be realized along with the acting force direction of the tensile stress, the condition of the concentration of the tensile stress of the rear axle housing body of the vehicle can be avoided, and the cracking phenomenon is avoided.

As a preferred embodiment, as shown in FIGS. 1 and 3, the energy absorbing slots 111 are two oppositely disposed. In the central part of the cover body 1, one energy absorption groove 111 extends from the upper edge to the top of the cover body 1, and the other energy absorption groove 111 extends from the lower edge to the top of the cover body 1 without being communicated, so that the strength of the vehicle rear axle cover can be improved. Of course, in other embodiments, a single energy absorbing groove 111 may be provided to penetrate therethrough, and a rib may be provided along the longitudinal direction of the cover body 1 to improve the strength of the vehicle rear axle cover.

As a preferred embodiment, as shown in FIG. 4, the energy absorbing groove 111 has a C-shaped cross section to provide a better curvature for further reducing stress concentration. Of course, in addition to the energy absorption groove 111 being C-shaped, the energy absorption groove may be formed in other shapes such as wavy cross-section according to the specific situation. In addition to two, the number of the energy absorbing grooves 111 may be one, three, four, or the like.

In addition, as shown in fig. 1 to 4, a part of the lid body 1 is recessed into the receiving groove, and further, a flat surface portion 113 is provided at the left end of the lid body 1, and the oil hole 112 is located on the flat surface portion 113. The plane portion 113 is a fan-shaped irregular structure and is arranged in a step with the top of the cover body 1. In the arrangement, the plane part 113 is arranged on the vehicle rear axle cover body in order to increase the oil filling plug mounting surface, so that the mounting reliability of the oil filling plug 16 is improved, the oil leakage risk is reduced, and the cover body 1 can avoid an excessive gap between the existing rear axle cover body with a circular structure and the reduction gear, so that the oil filling amount can be reduced, and the gear oil cost and weight are reduced.

Further, a flange 114 is provided at the edge of the lid body 1. The flanging 114 is formed by punching to form a matched welding surface of the vehicle rear axle cover body and the rear axle housing, so that the strength of the vehicle rear axle cover can be improved, the positioning position is set for the vehicle rear axle cover, the welding processing efficiency is improved, and the position precision of the vehicle rear axle cover is increased.

In a preferred embodiment, at least one weight-reduced region 115 is provided on the lid body 1, and the weight-reduced region 115 is provided in a planar manner on the lid body 1 and recessed from the lid body 1 toward the accommodating groove side. In a specific embodiment, a first weight-reduction region 1151 is provided at a left end position of the energy absorption groove 111, and the first weight-reduction region 1151 is formed in a circular planar shape on the lid body 1. A second weight-reduction region 1152 is provided at the lower left end of the planar portion 113.

Of course, other weight reduction regions 115 may be provided at appropriate portions of the cover body 1 to reduce the weight of the vehicle rear axle cover. The weight reduction area 115 is arranged according to the shape of a gear on a part of a main speed reducer buckled with a vehicle rear axle cover body, and aims to reduce the thickness of part of the position of the cover body 1 while reducing the redundant space between the vehicle rear cover body and the gear, thereby reducing the weight of the vehicle rear cover body.

The vehicle rear axle cover body of the embodiment can effectively reduce the risk of deformation and cracking by adopting the structure, and in addition, when the vehicle rear axle cover body is assembled on a vehicle, the filling amount of gear oil can be effectively reduced, the ground clearance of the whole vehicle can be improved, and the off-road property of the whole vehicle is improved.

Example two

The present embodiment relates to a vehicle rear axle assembly, which is provided with the vehicle rear axle cover body described in the first embodiment.

One example structure of the vehicle rear axle assembly in the present embodiment, as shown in fig. 5 to 6, has a rear axle housing 2 formed with an opening at which a vehicle rear axle cover body described in the first embodiment is provided. The rear axle housing 2 comprises an upper half shell 21 and a lower half shell 22, an opening surrounded by the upper half shell 21 and the lower half shell 22 is surrounded into a hole shape matched with the appearance of the cover body 1, and a flange 114 is erected on the outline of the opening and welded with the rear axle housing 2 into a whole; in addition, the oil filler plug 116 is installed in the oil filler hole 112, ensuring good sealing effect during oil filling.

In the vehicle rear axle assembly described in this embodiment, by providing the vehicle rear axle cover body according to the first embodiment, when the tire is impacted in the front-rear direction by the obstacle, the tensile stress acting on the vehicle rear axle assembly is transmitted to the vehicle rear axle cover body, and the stress concentration on the vehicle rear axle cover body 1 is reduced by the energy-absorbing groove 111, so that the problem that the vehicle rear axle assembly is cracked and deformed due to the vehicle rear axle cover body is solved, and the maintenance cost of the vehicle rear axle assembly can be reduced.

EXAMPLE III

The embodiment relates to a vehicle, and the vehicle is provided with a vehicle rear axle assembly described in the second embodiment. Through the vehicle rear axle assembly as in embodiment two, can reduce the fracture and the deformation problem of rear axle lid through energy-absorbing groove 111 to improve the intensity of the rear axle assembly of vehicle, do benefit to and promote the durability and the stability of whole car.

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 (9)

1. The utility model provides a vehicle rear axle lid for opening on the shutoff vehicle rear axle housing, its characterized in that:

vehicle rear axle lid is including being half ellipsoidal lid body (1), be formed with the open holding tank of one end in lid body (1), the holding tank is used for holding partial main reducer, just still be equipped with oil filler point (112) and energy-absorbing groove (111) on lid body (1), oil filler point (112) with communicate in the holding tank, energy-absorbing groove (111) are located on the outer terminal surface of lid body (1).

2. The vehicle rear axle cover according to claim 1, characterized in that:

the energy absorption groove (111) is located in the middle of the cover body (1) and extends from the top of the cover body (1) to the edge of the cover body (1) along the short axis direction of the cover body (1).

3. The vehicle rear axle cover according to claim 2, characterized in that:

the two energy absorption grooves (111) are oppositely arranged.

4. The vehicle rear axle cover according to claim 1, characterized in that:

the cross section of the energy absorption groove (111) is C-shaped.

5. The vehicle rear axle cover according to claim 1, characterized in that:

the cover body (1) has a portion recessed into the receiving groove, and a flat surface portion (113) is formed on an outer end surface of the cover body (1), and the oil filler hole (112) is located on the flat surface portion (113).

6. The vehicle rear axle cover according to claim 1, characterized in that:

the edge of the cover body (1) is provided with a flanging (114).

7. The vehicle rear axle cover according to claim 1, characterized in that:

the cover body (1) is provided with at least one weight reducing area (115), the cover body (1) at the weight reducing area (115) is recessed towards one side of the accommodating groove, and the outer end surface of the cover body (1) is a plane.

8. A vehicle rear axle assembly characterized in that:

the vehicle rear axle assembly has a rear axle housing (2) formed with an opening, and the opening is provided with the vehicle rear axle cover of any one of claims 1 to 7, and a filler plug (116) is installed in the filler hole (112).

9. A vehicle, characterized in that:

the vehicle is provided with the vehicle rear axle assembly of claim 8.

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