CN219029551U - Auxiliary frame and vehicle - Google Patents

Abstract

The utility model discloses an auxiliary frame and a vehicle, wherein the auxiliary frame comprises a frame body, the frame body is in a cage shape, the frame body comprises a plurality of sub-frames which are connected in sequence in the circumferential direction, each sub-frame is provided with a plurality of weight-reducing holes formed through topological design, and a sub-frame part between at least part of two adjacent weight-reducing holes on each sub-frame forms a force transmission path. The auxiliary frame provided by the embodiment of the utility model has the advantages of good force transmission performance, simple process and low manufacturing cost.

Description

Auxiliary frame and vehicle

Technical Field

The utility model relates to the technical field of vehicles, in particular to a subframe and a vehicle using the subframe.

Background

The subframe serves as an important component of the axle, which mainly serves as a barrier to vibrations and noise. The prior auxiliary frame is mainly of a frame structure, and the auxiliary frame of the frame structure is mainly designed for a traditional fuel vehicle, so that when the auxiliary frame is applied to an electric vehicle, the problems of poor force transmission performance, complex manufacturing process, high cost and the like of the frame auxiliary frame exist, and the use requirement of a new energy vehicle can not be met.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent.

Therefore, the auxiliary frame provided by the embodiment of the utility model has the advantages of good force transmission performance, simple process and low manufacturing cost.

The embodiment of the utility model also provides a vehicle using the auxiliary frame.

The auxiliary frame comprises a frame body, wherein the frame body is in a cage shape, the frame body comprises a plurality of sub-frames which are connected in sequence in the circumferential direction, each sub-frame is provided with a plurality of lightening holes formed through topological design, and a force transmission path is formed by sub-frame parts between at least part of two adjacent lightening holes on each sub-frame.

The auxiliary frame provided by the embodiment of the utility model has the advantages of good force transmission performance, simple process and low manufacturing cost.

In some embodiments, the plurality of sub-racks includes a front rack, a rear rack, an upper rack, and a lower rack, the front side of the upper rack being connected to the upper side of the front rack, the rear side of the upper rack being connected to the upper side of the rear rack, the front side of the lower rack being connected to the lower side of the front rack, and the rear side of the lower rack being connected to the lower side of the rear rack.

In some embodiments, the upper frame comprises a first longitudinal beam and a second longitudinal beam which are oppositely arranged in the left-right direction, a first interval is arranged in the middle of the first longitudinal beam, a second interval is arranged in the middle of the second longitudinal beam, and the first interval and the second interval are used for assembling the suspension.

In some embodiments, the front shelf, the rear shelf, the upper shelf, and the lower shelf are all symmetrical structures.

In some embodiments, at least a portion of the subframe is a stamping or casting.

In some embodiments, two adjacent sub-frames are connected by welding, a plurality of welding seams are arranged between the two adjacent sub-frames, the welding seams are arranged at intervals and uniformly distributed between the two adjacent sub-frames, and the length of each welding seam is smaller than the set length.

In some embodiments, the subframe includes a plurality of mounting portions, a plurality of the mounting portions being arranged at intervals along a circumferential direction of the frame body, and each of the mounting portions being for connection with a vehicle body.

The vehicle of an embodiment of the utility model comprises a subframe as described in any of the embodiments above.

In some embodiments, a vehicle includes:

the first frame group is connected to the left side of the frame body and is used for sealing the left side of the frame body, and the first frame group is used for connecting the frame body with a suspension;

the second frame group is connected to the right side of the frame body and is used for sealing the right side of the frame body, and the second frame group is used for connecting the frame body with the suspension.

In some embodiments, the subframe is a rear subframe.

Drawings

Fig. 1 is a schematic perspective view of a subframe according to an embodiment of the present utility model.

Fig. 2 is a schematic view of the left side of the subframe of fig. 1.

Reference numerals:

a frame body 1; a front frame 11; a rear frame 12; an upper frame 13; a lower frame 14; a first stringer 141; a second stringer 142; a first interval 143; a second space 144; a mounting portion 15; a lightening hole 16;

a first rack set 2; a first bracket 21; a second bracket 22;

a second set of shelves 3.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

As shown in fig. 1 and fig. 2, the subframe according to the embodiment of the present utility model includes a frame body 1, where the frame body 1 is in a cage shape, and the frame body 1 includes a plurality of subframes sequentially connected in a circumferential direction, each subframe is provided with a plurality of lightening holes 16 formed by topological design, and at least part of the subframe portions between two adjacent lightening holes 16 on each subframe form a force transmission path.

For example, as shown in fig. 1, the frame body 1 may include four sub-frames, which are a front frame 11, a rear frame 12, an upper frame 13, and a lower frame 14, respectively, wherein the front frame 11 and the rear frame 12 are oppositely disposed in the front-rear direction, and the upper frame 13 and the lower frame 14 are oppositely disposed in the up-down direction. The front side of the upper frame 13 is connected to the upper side of the front frame 11, the rear side of the upper frame 13 is connected to the upper side of the rear frame 12, the front side of the lower frame 14 is connected to the lower side of the front frame 11, and the rear side of the lower frame 14 is connected to the lower side of the rear frame 12. The left side and the right side of the frame body 1 can be opened, so that the whole frame body 1 is of a square cage-shaped structure.

The front frame 11, the rear frame 12, the upper frame 13 and the lower frame 14 are each provided with a plurality of lightening holes 16, the arrangement positions and shapes of the lightening holes 16 can be determined by a topology optimization design, and in particular, the lightening holes 16 can be designed by topology optimization software. The force transmission paths of each subframe in use can be simulated by software, then a network for transmitting the force can be formed by using the determined force transmission paths of each subframe, and finally the weight reducing holes 16 are optimally designed in the blank spaces of the network.

Alternatively, as shown in FIG. 1, the lightening holes 16 may be triangular holes, square holes, polygonal holes, anisotropic holes, or the like.

According to the auxiliary frame disclosed by the embodiment of the utility model, the frame body 1 is of a frame cage structure formed by splicing a plurality of sub-frames, each sub-frame can realize optimal arrangement of materials and the weight reducing holes 16 completely according to a topological principle, and compared with a driven frame type auxiliary frame, the auxiliary frame fully utilizes the space (the space surrounded by the frame) of the differential mechanism for back cancellation, so that the integrity of the auxiliary frame is improved, the force transmission performance of the frame body 1 is ensured, and the integral performance of the auxiliary frame is improved.

In addition, the auxiliary frame does not need to make each girder into a sealing structure of stamping welding or a pipe girder like a driven auxiliary frame, and each auxiliary frame can be processed and formed in a stamping mode, and the molded surface is far simpler than that of a common transverse longitudinal beam, so that the molding effect is good, the process difficulty of the frame is greatly reduced, and the manufacturing cost is reduced.

In addition, compared with a driven frame type auxiliary frame, the auxiliary frame disclosed by the utility model can realize optimal stress path optimization, improves the effective utilization rate of materials, and avoids the situation that the auxiliary frame in the related art can only amplify a safety system and replace the safety structural strength with redundant materials and welding seam strength.

In some embodiments, the upper frame 13 includes a first longitudinal beam 141 and a second longitudinal beam 142 arranged opposite to each other in the left-right direction, a first space 143 is provided in the middle of the first longitudinal beam 141, a second space 144 is provided in the middle of the second longitudinal beam 142, and the suspensions are assembled in the first space 143 and the second space 144.

For example, as shown in fig. 1, the first longitudinal beam 141 may be a left longitudinal beam of the upper frame 13, and the second longitudinal beam 142 may be a right longitudinal beam of the upper frame 13, and the first and second longitudinal beams 141 and 142 each extend generally in the front-rear direction and are mirror-symmetrically arranged in the left-right direction. The first longitudinal beam 141 may be divided into two sections, which are two beam sections of the first beam Duan Hedi, respectively, where the first beam section is located at the front side of the second beam section and is arranged with the second beam Duan Jiange, and the first space 143 is a space between the two beam sections of the first beam Duan Hedi.

Similarly, the second longitudinal beam 142 may also include two sections, which are a third beam section and a fourth beam section, respectively, where the third beam section is located on the front side of the fourth beam section and is disposed with the fourth beam Duan Jiange, and the second space 144 is a space between the third beam section and the fourth beam section.

When the subframe is assembled, the left side suspension of the subframe may fit within the first gap 143 and connect to the first rail 141 and the right side suspension of the subframe may fit within the second gap 144 and connect to the second rail 142. Therefore, the integrity and compactness of the connection between the auxiliary frame and the suspension frame can be enhanced, and the force transmission performance between the suspension frame and the auxiliary frame can be improved.

In some embodiments, the front frame 11, the rear frame 12, the upper frame 13, and the lower frame 14 are all symmetrical structures. For example, as shown in fig. 1, the front frame 11, the rear frame 12, the upper frame 13 and the lower frame 14 are all of a bilateral symmetry structure, that is, the outline of the front frame 11, the rear frame 12, the upper frame 13 and the lower frame 14 are bilateral symmetry, and the plurality of weight reducing holes 16 in the front frame 11, the rear frame 12, the upper frame 13 and the lower frame 14 are also bilateral symmetry. Therefore, the formed frame body 1 is also of a symmetrical structure, so that the balance of stress on the left side and the right side of the auxiliary frame is ensured.

In some embodiments, at least a portion of the subframe is a stamping or casting. For example, all the sub-frames of the frame body 1 can be formed by processing in a stamping manner, for example, when the frame body 1 only comprises a front frame 11, a rear frame 12, an upper frame 13 and a lower frame 14, the front frame 11, the rear frame 12, the upper frame 13 and the lower frame 14 are stamping parts, so that the processing manner of the frame body 1 is simple, and the difficulty of the production process is reduced. It will be appreciated that in other embodiments, the sub-frames of the frame body 1 may be formed by casting.

In some embodiments, two adjacent sub-frames are connected by welding, a plurality of welding seams are arranged between the two adjacent sub-frames, the welding seams are arranged at intervals and uniformly distributed between the two adjacent sub-frames, and the length of each welding seam is smaller than the set length.

The adjacent two sub-frames may be the front frame 11 and the upper frame 13, and the adjacent front frame 11 and upper frame 13 will be described as an example. The upper side of the front frame 11 and the front side of the upper frame 13 may be welded and connected and may have a plurality of welding lines therebetween, the plurality of welding lines being arranged substantially along the left-right direction at intervals, and the set length may be a specific length value, and the length of each welding line between the front frame 11 and the upper frame 13 is smaller than the set length. Therefore, the condition that the welding thermal deformation is large due to long welding seams is avoided, the connection yield of two adjacent sub-frames is ensured, and the manufacturing difficulty is reduced to a certain extent.

In some embodiments, the subframe includes a plurality of mounting portions 15, the plurality of mounting portions 15 being arranged at intervals along the circumferential direction of the frame body 1, and each mounting portion 15 being for connection with the vehicle body. For example, as shown in fig. 1, four mounting portions 15 may be provided at four corner positions of the subframe, the mounting portions 15 may be of a sleeve-like structure, and connection posts may be installed in the mounting portions 15, so that connection and fixation with the vehicle body may be achieved.

In some embodiments, as shown in FIG. 1, the corners of the walls of the lightening holes 16 may be smoothly curved so that stress concentration problems may be avoided while maintaining structural strength.

A vehicle of an embodiment of the utility model is described below.

The vehicle of the embodiment of the utility model includes the sub-frame, which may be the sub-frame described in the above embodiment. The subframe may in particular be a rear subframe of the vehicle, and in other embodiments the subframe may also be a front subframe of the vehicle. The vehicle can be a new energy vehicle such as an automobile, a truck, an SUV and the like, and can be other vehicles needing to use auxiliary frames.

The auxiliary frame provided by the embodiment of the utility model meets the use requirement of the new energy automobile, fully utilizes the space in the automobile, improves the overall performance, has large descending space for reducing weight and cost, and has great market space.

In some embodiments, the vehicle comprises a first set 2 and a second set 3, the first set 2 being connected to the left side of the frame 1 and effecting closure of the left side of the frame 1, and the first set 2 being for connecting the frame 1 to the suspension, the second set 3 being connected to the right side of the frame 1 and effecting closure of the right side of the frame 1, and the second set 3 being for connecting the frame 1 to the suspension.

Specifically, as shown in fig. 1, the frame body 1 of the auxiliary frame may be formed by combining the upper frame 13, the lower frame 14, the front frame 11 and the rear frame 12, and each of the first frame set 2 and the second frame set 3 may include a plurality of frames, for example, taking the first frame set 2 as an example, as shown in fig. 2, the first frame set 2 may include a first frame 21 and a second frame 22, and the first frame 21 and the second frame 22 are each in a rod shape and are generally arranged in a splayed shape.

Wherein the top of first support 21 can link to each other with the rear end of the first roof beam section of first longeron 141, and the bottom of first support 21 can link to each other with lower frame 14, and the top of second support 22 can link to each other with the front end of the second roof beam section of first longeron 141, and the bottom of second support 22 can link to each other with lower frame 14 to play the effect of shutoff sub vehicle frame's support body 1 left side on the one hand, on the other hand can link upper frame 13 and lower frame 14 as an organic whole, promote compactness and the wholeness of structure.

Similarly, the second rack set 3 may also include a third rack and a fourth rack, where the second rack set 3 is arranged in mirror symmetry with the first rack set 2, and will not be described herein.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While the above embodiments have been shown and described, it should be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the utility model.

Claims (10)

1. The auxiliary frame is characterized by comprising a frame body, wherein the frame body is in a cage shape, the frame body comprises a plurality of sub-frames which are connected in sequence in the circumferential direction, each sub-frame is provided with a plurality of lightening holes formed through topological design, and a force transmission path is formed by sub-frame parts between at least part of two adjacent lightening holes on each sub-frame.

2. The subframe of claim 1 wherein a plurality of said sub-frames comprise a front frame, a rear frame, an upper frame and a lower frame, said front side of said upper frame being connected to said upper side of said front frame, said rear side of said upper frame being connected to said upper side of said rear frame, said front side of said lower frame being connected to said lower side of said front frame, said rear side of said lower frame being connected to said lower side of said rear frame.

3. The subframe according to claim 2, wherein the upper frame includes a first side member and a second side member arranged opposite to each other in a left-right direction, a first space is provided in a middle portion of the first side member, a second space is provided in a middle portion of the second side member, and the first space and the second space are used for assembling a suspension.

4. The subframe of claim 2 wherein said front frame, said rear frame, said upper frame and said lower frame are each of symmetrical construction.

5. The subframe of claim 1 wherein at least a portion of the subframe is a stamped or cast part.

6. The subframe according to claim 1, wherein two adjacent subframes are welded together, a plurality of welding seams are arranged between the two adjacent subframes, the welding seams are arranged at intervals and uniformly distributed between the two adjacent subframes, and the length of each welding seam is smaller than a set length.

7. The subframe according to any one of claims 1 to 6, comprising a plurality of mounting portions, a plurality of the mounting portions being arranged at intervals along a circumferential direction of the frame body, and each of the mounting portions being for connection with a vehicle body.

8. A vehicle comprising a subframe according to any one of the preceding claims 1-7.

9. The vehicle according to claim 8, characterized by comprising:

the first frame group is connected to the left side of the frame body and is used for sealing the left side of the frame body, and the first frame group is used for connecting the frame body with a suspension;

the second frame group is connected to the right side of the frame body and is used for sealing the right side of the frame body, and the second frame group is used for connecting the frame body with the suspension.

10. The vehicle of claim 8, wherein the subframe is a rear subframe.

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