CN214493092U - Lower automobile body frame construction and car - Google Patents
Lower automobile body frame construction and car Download PDFInfo
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- CN214493092U CN214493092U CN202120364254.7U CN202120364254U CN214493092U CN 214493092 U CN214493092 U CN 214493092U CN 202120364254 U CN202120364254 U CN 202120364254U CN 214493092 U CN214493092 U CN 214493092U
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Abstract
The utility model relates to the technical field of automobile bodies, in particular to a lower body frame structure and an automobile; the lower vehicle body frame structure includes: the front cabin assembly comprises two outer longitudinal beams, two front cross beams and a plurality of middle longitudinal beams, two ends of each front cross beam are correspondingly lapped on the two outer longitudinal beams respectively, and two ends of each middle longitudinal beam are arranged on the two front cross beams respectively; the rear floor assembly is connected to the end parts of the two outer longitudinal beams to form a lower vehicle body frame; and a front floor panel on which the lower body frame is disposed; lower automobile body frame construction can effectually solve the frame of the lower automobile body of traditional syllogic structure among the prior art, lower automobile body frame construction can appear the technical problem in two weak areas.
Description
Technical Field
The utility model relates to a technical field of automobile body especially relates to a lower automobile body frame construction and car.
Background
In the development process of the vehicle body, the frame structure of the lower vehicle body is a place needing important attention, and the frame structure of the lower vehicle body not only influences the performance of the whole vehicle, but also greatly influences the process, thereby influencing the cost. With the increasing importance on the development cost and performance of the whole automobile, higher requirements are also put forward on the lower automobile frame structure.
The Chinese patent discloses an automobile lower body framework structure, which comprises a left side beam and a right side beam, wherein the left side beam and the right side beam are oppositely arranged, the left side beam comprises a left front longitudinal beam rear extension beam, a left front floor longitudinal beam and a left rear floor longitudinal beam, and the left front longitudinal beam rear extension beam, the left front floor longitudinal beam and the left rear floor longitudinal beam are sequentially welded; the right side beam comprises a front right longitudinal beam rear extension beam, a front right floor longitudinal beam and a rear right floor longitudinal beam, and the front right longitudinal beam rear extension beam, the front right floor longitudinal beam and the rear right floor longitudinal beam are welded in sequence. The utility model discloses the three part adoption direct lapped mode of left side roof beam and right roof beam in each other has avoided the use of middle part for lower car skeleton structure is receiving the in-process of collision, can with stress effective dispersion to more automobile body roof beams structure above and transmit the vapour car skeleton rear portion, thereby better protection passenger safety.
The welding order that the lower vehicle body frame construction of this patent adopted is preceding cabin assembly, preceding floor assembly and the traditional syllogic structure of back floor assembly, and two weak areas can appear in lower vehicle body frame construction.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model aims at providing a lower car body frame construction and car for the frame construction who solves the lower car body that exists among the prior art is traditional syllogic structure, and two weak regional technical problem can appear in lower car body frame construction.
The embodiment of the utility model adopts the following technical scheme:
a lower body frame structure, the lower body frame structure comprising:
the front cabin assembly comprises two outer longitudinal beams, two front cross beams and a plurality of middle longitudinal beams, two ends of each front cross beam are correspondingly lapped on the two outer longitudinal beams respectively, and two ends of each middle longitudinal beam are arranged on the two front cross beams respectively;
the rear floor assembly is connected to the end parts of the two outer longitudinal beams to form a lower vehicle body frame; and the number of the first and second groups,
and the lower vehicle body frame is arranged on the front floor panel.
Furthermore, the number of the middle longitudinal beams is two, and the two middle longitudinal beams are arranged on the two front cross beams in parallel.
Further, the rear floor assembly is welded to the ends of the two outer stringers.
Further, the rear floor assembly and the two outer longitudinal beams are welded and fixed through steel spot welding.
Furthermore, the rear floor assembly is provided with two rear floor longitudinal beams, and the rear floor longitudinal beams are connected with the outer longitudinal beams in a one-to-one correspondence mode.
Furthermore, the rear floor assembly is provided with a rear cross beam, and two ends of the rear cross beam are respectively arranged on the two rear floor longitudinal beams.
Furthermore, a connecting piece is arranged between the rear cross beam and the front cross beam close to one side of the rear floor assembly.
Furthermore, the connecting pieces are seat slide rails, the number of the seat slide rails is two, one end of each seat slide rail is lapped on the rear cross beam, and the other end of each seat slide rail is lapped on the front cross beam close to one side of the rear floor assembly.
Further, the lower body frame is welded to the front floor panel.
The embodiment of the utility model provides a car is still provided, the car includes like above-mentioned lower body frame structure.
Compared with the prior art, the utility model discloses an embodiment's beneficial effect lies in:
an embodiment of the utility model provides a lower automobile body frame construction, lower automobile body frame construction includes: the front cabin assembly comprises two outer longitudinal beams, two front cross beams and a plurality of middle longitudinal beams, two ends of each front cross beam are correspondingly lapped on the two outer longitudinal beams respectively, and two ends of each middle longitudinal beam are arranged on the two front cross beams respectively; the rear floor assembly is connected to the end parts of the two outer longitudinal beams to form a lower vehicle body frame; and a front floor panel on which the lower body frame is provided.
This embodiment lower body frame construction compares in prior art, has saved being connected of preceding floor and preceding cabin assembly, but is connected through preceding cabin assembly and back floor assembly, and the lower body frame who forms after connecting sets up in the front on the floor panel again, saves man-hour, reduce cost, and the structure is more smooth-going, and it is better to pass power effect, and the panel does not have the trompil problem, and the leakproofness is better, simultaneously, also can avoid the weak area that the connection of preceding floor and preceding cabin assembly caused. Lower automobile body frame passes through the front floor panel, can play the effect of reinforceing to the frame of the lower automobile body of traditional syllogic structure among the prior art has been solved, two weak regional technical problem can appear in lower automobile body frame construction.
An embodiment of the utility model provides an automobile.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural view of a conventional lower body frame structure;
FIG. 2 is a schematic structural view of a weak portion of a conventional lower body frame structure;
fig. 3 is a schematic structural view of a front cabin assembly of a lower vehicle body frame structure provided by the present invention;
FIG. 4 is a schematic structural view of a rear floor assembly of a lower body frame structure according to the present invention;
fig. 5 is a schematic structural view of a front floor panel of a lower vehicle body frame structure according to the present invention;
fig. 6 is a schematic structural view of a lower body frame structure provided by the present invention;
fig. 7 is a schematic structural diagram of a lower vehicle body frame structure provided by the present invention.
Wherein:
100. a front nacelle assembly; 101. an outer stringer; 102. a front cross member; 103. a middle longitudinal beam; 200. a rear floor assembly; 201. a rear floor stringer; 202. a rear cross member; 300. a front floor panel; 400. a connecting member;
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are used broadly and are defined as, for example, a fixed connection, an exchangeable connection, an integrated connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements, unless otherwise explicitly stated or limited. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
As shown in fig. 1 and 2, the conventional lower body frame structure adopts a three-section connection manner, and the welding sequence is a front cabin assembly 100, a front floor assembly and a rear floor assembly 200, because the front floor assembly and the front cabin assembly 100 are welded together first, when the three assemblies are spliced together, four large through holes need to be formed in the front floor panel 300 of the front floor assembly to meet the requirement of the welding process, when the middle longitudinal beam 103 of the front cabin assembly 100 is connected with the middle longitudinal beam 103 of the front floor assembly, two small through holes need to be formed in the front floor panel 300, such a configuration results in the frame structure having joint locations that are nearly aligned when the front nacelle assembly 100 and the front floor assembly are lapped, as described below with respect to figure 1, further, the lower body frame is weak in strength, stress concentration is easy, and problems such as collision and bending occur.
The utility model provides a lower vehicle body frame structure, as shown in figure 3, the lower vehicle body frame structure comprises a front cabin assembly 100, the front cabin assembly 100 comprises two outer longitudinal beams 101, two front cross beams 102 and a middle longitudinal beam 103, two ends of each front cross beam 102 are respectively correspondingly lapped on the two outer longitudinal beams 101, and two ends of the middle longitudinal beam 103 are respectively arranged on the two front cross beams 102;
the number of the middle longitudinal beams 103 is two, and the two middle longitudinal beams 103 are arranged in parallel on the two front cross beams 102. The two center stringers 103 can more effectively increase the strength of the rear end of the front nacelle assembly 100 to be connected with the rear floor assembly 200 and the front floor panel 300.
As shown in fig. 4 and 6, the lower body frame structure further includes a rear floor assembly 200, and the rear floor assembly 200 is connected to the ends of the two outer side members 101 to form a lower body frame; the rear floor assembly 200 is welded to the ends of the two outer side members 101. The connection manner of the rear floor assembly 200 and the end portions of the two outer longitudinal beams 101 may be many, and in this embodiment, it is preferable that the rear floor assembly 200 and the two outer longitudinal beams 101 are welded and fixed by steel spot welding.
The rear floor assembly 200 is provided with two rear floor longitudinal beams 201, and the rear floor longitudinal beams 201 are connected with the outer longitudinal beams 101 in a one-to-one correspondence manner. In order to reinforce the strength of the rear floor longitudinal beams 201, the rear floor assembly 200 has a rear cross beam 202, and two ends of the rear cross beam 202 are respectively disposed on the two rear floor longitudinal beams 201.
As shown in fig. 5, the lower body frame structure further includes a front floor panel 300, and the lower body frame is disposed on the front floor panel 300.
The lower body frame of the present embodiment is welded to the front floor panel 300. Of course, the lower body frame and the front floor panel 300 may be fastened by bolts or screws, and may be more stable by welding, so as to reduce vibration and bounce.
As shown in fig. 7, the lower body frame structure of the embodiment eliminates the reinforcing longitudinal beam of the front floor assembly, the front nacelle assembly 100 has two outer longitudinal beams 101 and a middle longitudinal beam 103 disposed between the two outer longitudinal beams 101, two front cross beams 102 are arranged between the two outer longitudinal beams 101, and two ends of the middle longitudinal beam 103 are respectively disposed on the two front cross beams 102, so as to avoid the problems that the joint between the reinforcing longitudinal beam of the front floor assembly and the middle longitudinal beam 103 of the front nacelle assembly 100 is weak, stress is easily concentrated, collision and bending occur, and the like due to the connection between the reinforcing longitudinal beam of the front floor assembly and the middle longitudinal beam 103 of the front nacelle assembly 100. Meanwhile, the process flow of connection between the reinforcing longitudinal beam of the front floor assembly and the middle longitudinal beam 103 of the front engine room assembly 100 is simplified, the preparation efficiency of the lower vehicle body frame structure is improved, the energy consumption, the cost and the like are saved, the lower vehicle body frame structure is smoother, and the force transmission effect is better. Meanwhile, as the reinforcing longitudinal beam of the front floor assembly is cancelled, the front floor panel 300 has no hole problem, and the sealing property is better; the number of joints among the three parts is reduced, the beat is shorter, the welding cost is lower, the force transmission is smoother, and the collision performance is enhanced; the number of parts is less, and the cost of the die is greatly reduced. The lower vehicle body frame structure realizes the platformization, and can be universal in structure for different vehicle types, so that the purpose of the platformization is achieved.
The rear floor assembly 200 is connected to the ends of the two outer longitudinal beams 101 to form a lower vehicle body frame; the lower body frame is provided on the front floor panel 300. The connecting positions of the front cabin assembly 100 and the front floor panel 300 are staggered in the X direction and are not on the same straight line, the connecting position of the rear floor assembly 200 and the front cabin assembly 100 can be reinforced through the front floor panel 300, and the technical problem that two weak areas can appear in a lower vehicle body frame structure in the three-section connecting mode of the traditional longitudinal beam can be effectively solved.
In addition, the lower vehicle body frame structure of the present embodiment,
in the lower body frame structure of the present embodiment, there is only one joint between the rear floor assembly 200 and the front cabin assembly 100, and in order to further increase the strength of the joint between the rear floor assembly 200 and the front cabin assembly 100 and compensate the strength of the joint between the rear floor assembly 200 and the front cabin assembly 100, a connecting member 400 is disposed between the rear cross member 202 and the front cross member 102 near the rear floor assembly 200 in the lower body frame structure of the present embodiment. One end of a connecting piece 400 is connected to the rear cross beam 202, and the other end of the connecting piece 400 is connected to the front cross beam 102 close to one side of the rear floor assembly 200; the connecting member 400 can effectively improve the strength of the joint between the rear floor assembly 200 and the front cabin assembly 100, and avoid the problems of collision, bending and the like caused by stress concentration; the weak area of the original lower vehicle body frame structure disappears, and the bending performance is better.
The connecting member 400 is a seat slide rail, the number of the seat slide rails is two, one end of each seat slide rail is overlapped on the rear cross beam 202, and the other end of each seat slide rail is overlapped on the front cross beam 102 near one side of the rear floor assembly 200. The chassis of the vehicle body can be more compact through the seat slide rail, the seat slide rail can be used for improving the strength of the joint of the rear floor assembly 200 and the front cabin assembly 100 when the seat can be adjusted, so that the lower vehicle body frame structure can have higher compressive strength and better bending performance.
The utility model also provides a car, the car includes as above-mentioned lower automobile body frame construction.
An embodiment of the utility model provides a car, the car can be effectual solved the traditional syllogic's that exists among the prior art frame construction, two weak regional technical problem can appear in lower car body frame construction.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the automobile described above may refer to a corresponding process in the embodiment of the lower body frame structure, and is not described herein again.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A lower vehicle body frame structure characterized by comprising:
the front cabin assembly comprises two outer longitudinal beams, two front cross beams and a plurality of middle longitudinal beams, two ends of each front cross beam are correspondingly lapped on the two outer longitudinal beams respectively, and two ends of each middle longitudinal beam are arranged on the two front cross beams respectively;
the rear floor assembly is connected to the end parts of the two outer longitudinal beams to form a lower vehicle body frame; and the number of the first and second groups,
and the lower vehicle body frame is arranged on the front floor panel.
2. A lower body frame structure according to claim 1, wherein there are two of said intermediate longitudinal members, and two of said intermediate longitudinal members are disposed in parallel on two of said front cross members.
3. The lower body frame structure according to claim 2, wherein the rear floor assembly is welded to end portions of two of the outer stringers.
4. A lower body frame structure according to claim 3, wherein the rear floor assembly and the two outer side members are fixed by spot welding of steel.
5. A lower body frame structure according to claim 1, wherein the rear floor assembly has two rear floor stringers, the rear floor stringers being connected in one-to-one correspondence with the outer stringers.
6. A lower body frame structure according to claim 5, wherein the rear floor assembly has a rear cross member, both ends of which are provided on the two rear floor longitudinal members, respectively.
7. A lower body frame structure according to claim 6, wherein a connecting member is provided between the rear cross member and the front cross member on a side close to the rear floor assembly.
8. The lower body frame structure according to claim 7, wherein the connecting members are seat rails, the number of the seat rails is two, one end of each of the seat rails is overlapped on the rear cross member, and the other end of each of the seat rails is overlapped on the front cross member on a side close to the rear floor assembly.
9. The lower body frame structure according to claim 1, wherein the lower body frame is welded to the front floor panel.
10. An automobile, characterized in that the automobile comprises a lower body frame structure according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120364254.7U CN214493092U (en) | 2021-02-07 | 2021-02-07 | Lower automobile body frame construction and car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120364254.7U CN214493092U (en) | 2021-02-07 | 2021-02-07 | Lower automobile body frame construction and car |
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| Publication Number | Publication Date |
|---|---|
| CN214493092U true CN214493092U (en) | 2021-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120364254.7U Active CN214493092U (en) | 2021-02-07 | 2021-02-07 | Lower automobile body frame construction and car |
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| Country | Link |
|---|---|
| CN (1) | CN214493092U (en) |
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2021
- 2021-02-07 CN CN202120364254.7U patent/CN214493092U/en active Active
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