CN210882313U

CN210882313U - Lightweight sub vehicle frame structure

Info

Publication number: CN210882313U
Application number: CN201922048142.6U
Authority: CN
Inventors: 王立来; 石荡赫; 方永利; 黄洁; 段文立
Original assignee: Chongqing Jinkang Sailisi New Energy Automobile Design Institute Co Ltd
Current assignee: Chongqing Jinkang Sailisi New Energy Automobile Design Institute Co Ltd
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2020-06-30
Anticipated expiration: 2029-11-25

Abstract

The utility model discloses a lightweight auxiliary frame structure, which comprises a frame body, wherein the middle part of the frame body is provided with a cavity, the frame body is formed by connecting sections by welding after being cast in sections, the frame body is in a thin-wall hollow shape, the end part of the frame body is provided with a mounting point, and a characteristic hole penetrating through an upper wall plate and a lower wall plate of the frame body is arranged near the mounting point; the characteristic hole is provided with an annular closed hole wall, and the hole wall connects the upper wall plate and the lower wall plate of the frame body into a whole. Use the utility model discloses, accord with lightweight design theory when satisfying sub vehicle frame structural rigidity demand.

Description

Lightweight sub vehicle frame structure

Technical Field

The utility model relates to a sub vehicle frame structure, especially a lightweight sub vehicle frame structure.

Background

The auxiliary frame is used as an important component of a suspension and is responsible for connecting important automobile parts such as an automobile body, a power assembly, a steering engine, a stabilizer bar, a control arm and the like, and is widely applied to the field of passenger vehicles at present.

In the concrete structural design of sub vehicle frame, because the structural tie point of sub vehicle frame is more, shared space is great, and the sub vehicle frame body designs into the cavity cast structure usually. However, due to the large cavity of the structure, the rigidity near the mounting point is insufficient, and the structure needs to be locally reinforced. The prior art generally adds the muscle on the surface of structure, often needs to add many strengthening ribs, and this kind of enhancement mode is unfavorable for sub vehicle frame structure's lightweight.

Disclosure of Invention

The utility model aims to provide a: to lead to the problem of weight overweight when sub vehicle frame structure strengthens rigidity among the prior art, provide a light and satisfy the lightweight sub vehicle frame structure of rigidity demand of weight.

In order to realize the purpose of the utility model, the utility model provides a following technical scheme:

a lightweight auxiliary frame structure comprises a frame body, wherein a cavity is formed in the middle of the frame body, the frame body is formed by connecting sections through welding after segmented casting, the frame body is in a thin-wall hollow shape, a mounting point is arranged at the end part of the frame body, and a characteristic hole penetrating through an upper wall plate and a lower wall plate of the frame body is arranged near the mounting point; the characteristic hole is provided with an annular closed hole wall, and the hole wall connects the upper wall plate and the lower wall plate of the frame body into a whole. The characteristic holes are arranged near the mounting points and are connected with the upper surface and the lower surface of the cavity, so that the rigidity of the mounting points in the vertical direction is enhanced, meanwhile, as the characteristic holes are annular curved surfaces which enclose through holes penetrating through the upper surface and the lower surface, the weight of materials for increasing the upper surface and the lower surface of the front through holes of the characteristic holes is removed, and the weight of the frame body after the characteristic holes are increased cannot be greatly increased like a reinforcing rib; specifically, the frame body is connected with a plurality of workpieces, if the frame body is connected with the rear lower swing arm, after the characteristic holes are formed, when the rear lower swing arm is stressed, the deformation difference of the upper surface and the lower surface of a cavity near the connecting position of the mounting point can be reduced, so that the integral rigidity of the cavity is improved, and the rigidity of the mounting point of the rear lower swing arm is also improved.

Preferably, the hole wall is consistent with the thickness of the upper and lower wall plates of the frame body, and a smooth transition section is formed at the opening of the characteristic hole. The wall thickness is kept consistent, the convex-concave deformation phenomenon caused by the sudden change of the thickness after the structure is cooled in the casting process is avoided, and the stress concentration is eliminated through the smooth transition section to cause cracks.

Preferably, after the frame body is installed on the vehicle body, and after the frame body is installed on the vehicle body, the axial direction of the characteristic hole coincides with the Z direction of the space coordinate. The problem that water is accumulated at the characteristic hole after the automobile wades is avoided.

Preferably, the frame body is further provided with a connecting plate, at least three reinforcing ribs are distributed on one side of the connecting plate, and the reinforcing ribs are distributed at two ends and in the middle of the connecting plate. The local rigidity of the connecting plate structure is increased, and particularly, the height of the rib is not limited and can be adjusted according to the positions and the sizes of other peripheral workpieces.

Preferably, the mounting position of the frame body and the rear upper swing arm is provided with a mounting plane, and the mounting plane is provided with a mounting hole. The installation plane is preset, so that the nuts can be stably placed during installation, and the installation convenience is improved.

Preferably, two installation seats are arranged on one side of the frame body and used for fixing two ends of the stabilizer bar. The stabilizer bar may be connected to a knuckle that is connected to the wheel where the stabilizer bar is connected to enhance the stability of the vehicle body.

Preferably, the stabilizer bar is sleeved in the rubber sleeve, and the cover plate presses the rubber sleeve in the mounting seat. The stabilizer bar is the ironware of stereoplasm, and the rubber sleeve is deformable, and when giving same packing force, the stabilizer bar that has the rubber sleeve is fixed more easily, consequently uses the rubber sleeve to entangle and makes the stabilizer bar, compresses tightly the rubber sleeve again, can be so that the stabilizer bar is difficult for sliding, is changeed and is compressed tightly.

Preferably, the rubber sleeve is cylindrical, and the contact positions of the cover plate, the mounting seat and the cylindrical surface of the rubber sleeve are cambered surfaces; the upper, lower, left and right ends of the cambered surface of the mounting seat are provided with four pits, the rubber sleeve is provided with four protrusions at the corresponding positions of the pits, and the pits and the protrusions form a buckling structure. The cover plate, the mounting seat and the rubber sleeve form arc surface contact, so that the rubber sleeve can be clamped and taken out conveniently; the rubber sleeve and the mounting seat form a buckle structure, so that the transverse position of the rubber sleeve in the mounting seat is determined, the rubber sleeve does not slide out of the mounting seat, and the stability of the stabilizer bar is enhanced.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that: the upper surface and the lower surface of the frame body are connected together by using the characteristic holes, so that the rigidity of the frame body is enhanced, the integral weight is not influenced, and the lightweight design concept is met.

Drawings

The accompanying drawings, which form a part of the present application, 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 and not to limit the invention. In the drawings:

fig. 1 shows the utility model discloses a light-weight sub vehicle frame structure's mounting structure sketch map.

Fig. 2 shows a mounting structure diagram of the lightweight subframe structure of fig. 1 from a second perspective.

Fig. 3 shows an enlarged detail at a in fig. 2.

Fig. 4 shows a third perspective view of the lightweight subframe structure of fig. 1.

Fig. 5 shows an enlarged detail at B in fig. 4.

Fig. 6 shows a mounting structure diagram of the lightweight subframe structure of fig. 1 from a fourth perspective.

Fig. 7 shows an enlarged detail at C in fig. 6.

Fig. 8 shows an enlarged detail view of the hidden stabilizer bar at C in fig. 6.

Fig. 9 shows a mounting structure diagram of the lightweight subframe structure of fig. 1 at a fifth perspective.

Fig. 10 shows an enlarged detail view at D in fig. 9.

Wherein the figures include the following reference numerals:

1. a frame body; 11. a cavity; 12. a characteristic hole; 13. a connecting plate; 14. reinforcing ribs; 15. a mounting plane; 16. mounting holes;

17. a mounting seat; 171. a pit;

2. a rear upper swing arm; 3. a stabilizer bar; 4. a cover plate; 5. a rubber sleeve.

Detailed Description

It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1, the lightweight auxiliary frame structure comprises a frame body 1, wherein a cavity 11 is formed in the middle of the frame body 1, the frame body 1 is formed by casting sections and then connecting the sections by welding, the frame body 1 is hollow, a mounting point is arranged at the end part of the frame body 1, and a characteristic hole 12 penetrating through upper and lower wall plates of the frame body 1 is arranged near the mounting point; the characteristic hole 12 has a ring-shaped closed hole wall which integrally connects the upper and lower wall plates of the frame body 1.

Preferably, the hole wall is the same as the thickness of the upper and lower wall plates of the frame body 1, and the opening of the characteristic hole 12 is formed with a smooth transition section.

Preferably, after the frame body 1 is installed on a vehicle body, the axial direction of the characteristic hole 12 is coincident with the Z direction of the space coordinate.

As shown in fig. 2-3, preferably, the frame body 1 is further provided with a connecting plate 13, at least three reinforcing ribs 14 are distributed on one side of the connecting plate 13, and the reinforcing ribs 14 are distributed at two ends and in the middle of the connecting plate 13.

As shown in fig. 4-5, preferably, a mounting plane 15 is disposed at the mounting position of the frame body 1 and the rear upper swing arm 2, and a mounting hole 16 is formed on the mounting plane 15.

As shown in fig. 6 to 7, preferably, the frame body 1 is provided with two mounting seats 17 at one side, and the mounting seats 17 are used for fixing both ends of the stabilizer bar 3.

Preferably, the stabilizer bar 3 is sleeved in the rubber sleeve 5, and the cover plate 4 presses the rubber sleeve 5 in the mounting seat 17.

As shown in fig. 8, preferably, the rubber sleeve 5 is cylindrical, and the contact positions of the cover plate 4, the mounting seat 17 and the cylindrical surface of the rubber sleeve 5 are all arc surfaces; four pits 171 are arranged at the upper, lower, left and right ends of the cambered surface of the mounting seat 17, four protrusions are arranged at the corresponding positions of the pits of the rubber sleeve 5, and the pits 171 and the protrusions form a buckling structure.

Specifically, the frame body 1 is formed by aluminum alloy through segmented casting, and is divided into six independent sections, and after the six sections are respectively formed, the six sections are connected into the whole frame body 1 in a welding mode.

Referring to fig. 9-10, which show the schematic structural view of the characteristic hole 12, the characteristic hole 12 is disposed near the mounting point, the characteristic hole 12 is a circular curved surface and is connected with the upper and lower wall plates of the frame body 1 to form a closed cavity, and the circular curved surface encloses a through hole penetrating through the upper and lower surfaces. The upper wall plate and the lower wall plate are connected to play a role in strengthening rigidity, the through hole in the middle part plays a role in reducing weight, and the rigidity requirement and the lightweight design concept are met.

Specifically, the thickness of the hole wall of the characteristic hole 12 may not be the same as the thickness of the frame body 1, and may be increased or decreased according to the strength requirement.

The scope of the present invention is defined not by the above-described embodiments but by the appended claims and equivalents thereof.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A lightweight auxiliary frame structure comprises a frame body (1), wherein a cavity (11) is formed in the middle of the frame body (1), the frame body (1) is formed by casting sections and then connecting the sections through welding, the frame body (1) is hollow and thin-walled, and the lightweight auxiliary frame structure is characterized in that a mounting point is arranged at the end part of the frame body (1), and a characteristic hole (12) penetrating through upper and lower wall plates of the frame body (1) is formed in the vicinity of the mounting point; the characteristic hole (12) is provided with an annular closed hole wall, and the hole wall connects the upper wall plate and the lower wall plate of the frame body (1) into a whole.

2. The lightweight subframe structure according to claim 1, wherein the hole wall has a thickness corresponding to the thickness of the upper and lower wall plates of the frame body (1), and the opening of the characteristic hole (12) is formed with a rounded transition section.

3. The lightweight subframe structure according to claim 1, wherein an axial direction of the characteristic hole (12) coincides with a Z-direction of a spatial coordinate after the frame body (1) is mounted on a vehicle body.

4. The lightweight subframe structure of claim 1 wherein a connecting plate (13) is further disposed on the frame body (1), at least three reinforcing ribs (14) are distributed on one side of the connecting plate (13), and the reinforcing ribs (14) are distributed at two ends and in the middle of the connecting plate (13).

5. The lightweight subframe structure according to claim 1, wherein a mounting plane (15) is provided at a mounting position of the frame body (1) and the rear upper swing arm (2), and a mounting hole (16) is formed in the mounting plane (15).

6. The lightweight subframe structure according to claim 1, wherein two mounting seats (17) are provided on one side of the frame body (1), and the mounting seats (17) are used for fixing both ends of the stabilizer bar (3).

7. The lightweight subframe structure of claim 6 wherein said stabilizer bar (3) is sleeved in a rubber bushing (5), and a cover plate (4) presses said rubber bushing (5) in said mounting seat (17).

8. The lightweight subframe structure according to claim 7, wherein the rubber sleeve (5) is cylindrical, and the contact positions of the cover plate (4) and the mounting seat (17) with the cylindrical surface of the rubber sleeve (5) are all arc surfaces; the upper end, the lower end, the left end and the right end of the cambered surface of the mounting seat (17) are provided with four pits (171), the rubber sleeve (5) is provided with four protrusions at the corresponding positions of the pits, and the pits (171) and the protrusions form a buckling structure.