Automobile longitudinal beam connecting structure and automobile

Abstract

The utility model provides an automobile longitudinal beam connecting structure and an automobile. The vehicle longitudinal beam connecting structure comprises a first longitudinal beam, a second longitudinal beam and a fastener. The first longitudinal beam comprises a first beam body and a first connecting section connected to one end of the first beam body in the length direction. The first connecting section is provided with a containing groove with an upward opening. The second longitudinal beam comprises a second beam body and a second connecting section connected to one end of the second beam body in the length direction, the second beam body and the first beam body are arranged in a spaced mode in the front-back direction, and the second beam body is located on the side, close to the first connecting section, of the first beam body. The second connecting section is arranged at the end, close to the first connecting section, of the second beam body. The second connecting end section is arranged in the containing groove. The fastener penetrates through the side wall of the containing groove so that the first connecting section and the second connecting section can be connected in a fastened mode. The problems that a closed cavity is formed after the first longitudinal beam and the second longitudinal beam are in lap joint, a position which cannot be welded exists at the lap joint, and the connection strength of the lap joint is low are solved, and the structural strength of an automobile is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field, especially a kind of automobile longitudinal beam connecting structure and automobile. BACKGROUND

[0002] The longitudinal beam of automobile extends along the longitudinal direction of automobile, and together with the cross beam and other structural components of automobile, forms the framework of vehicle, to ensure the stability of vehicle during driving. The longitudinal beam of existing automobile includes front longitudinal beam and rear longitudinal beam. The front longitudinal beam and the rear longitudinal beam are usually fixedly connected to the bottom of automobile floor assembly by welding.

[0003] However, when the front longitudinal beam and the rear longitudinal beam are overlapped, the longitudinal beam is a closed cavity after overlapping, and there is a position that cannot be welded at the overlapping position, so that the connection strength at the overlapping position is weak, which affects the structural strength of automobile. SUMMARY

[0004] In view of the above problems, the utility model is proposed to provide a longitudinal beam connecting structure and automobile of automobile to overcome the above problems or at least partially solve the above problems, which can solve the problem that when the front longitudinal beam and the rear longitudinal beam are overlapped, the longitudinal beam is a closed cavity after overlapping, and there is a position that cannot be welded at the overlapping position, so that the connection strength at the overlapping position is weak, to achieve the purpose of improving the structural strength of automobile.

[0005] Specifically, the utility model provides a longitudinal beam connecting structure of automobile, which comprises:

[0006] The first longitudinal beam extends in the front-rear direction. The first longitudinal beam comprises a first beam body and a first connecting segment connected to one end of the first beam body in the length direction. The first connecting segment is provided with a receiving groove with an opening facing upward, and the receiving groove is provided through in the front-rear direction.

[0007] The second longitudinal beam extends in the front-rear direction. The second longitudinal beam comprises a second beam body and a second connecting segment connected to one end of the second beam body in the length direction, the second beam body is arranged in the front-rear direction with the first beam body, and the second beam body is on the side of the first beam body close to the first connecting segment. The second connecting segment is arranged at one end of the second beam body close to the first connecting segment. The second connecting segment is arranged in the receiving groove.

[0008] The fastener penetrates the side wall of the receiving groove to tightly connect the first connecting segment and the second connecting segment.

[0009] Optionally, the surface of the second connecting segment close to the receiving groove is matched with the profile of the receiving groove.

[0010] Optionally, the second connecting section is provided with an installation groove with an opening facing upward.

[0011] Optionally, at least one first connecting hole is arranged on the groove wall of the accommodating groove.

[0012] The first connecting hole and the second connecting hole are arranged one by one.

[0013] Optionally, one first connecting hole is arranged on each of the two groove walls of the accommodating groove.

[0014] One second connecting hole is arranged on each of the two groove walls of the installation groove.

[0015] Optionally, the automobile longitudinal beam connecting structure further comprises a threaded section, the threaded section is fixedly connected to one side of the second connecting hole away from the first connecting hole, and is coaxially arranged with the second connecting hole.

[0016] The fastener is a bolt, and the bolt is threadedly connected with the threaded section.

[0017] Optionally, the fastener is a bolt, and the length of the bolt in the installation groove after being inserted into the first connecting hole and the second connecting hole is 0.2 to 0.48 times the groove width of the installation groove.

[0018] Optionally, the ratio of the length of the first connecting section to the top width of the first connecting section is 0.25 to 0.75.

[0019] Optionally, the accommodating groove is a few-shaped groove with an opening facing upward.

[0020] Optionally, the first connecting section is an arc-shaped groove with an opening facing upward, and the top edge of the groove wall of the arc-shaped groove extends horizontally away from the inside of the arc-shaped groove.

[0021] The utility model further provides an automobile, which comprises:

[0022] The automobile longitudinal beam connecting structure.

[0023] An automobile floor, the first longitudinal beam and the second longitudinal beam are fixedly connected to the lower side of the automobile floor to support the automobile floor.

[0024] The first longitudinal beam and the second longitudinal beam are overlapped and arranged in the automobile longitudinal beam connecting structure, and the connecting strength of the first longitudinal beam and the second longitudinal beam is improved. Compared with the welding connection of the first longitudinal beam and the second longitudinal beam, the utility model also can fix the side wall of the overlapped place of the first longitudinal beam and the second longitudinal beam through the fastener, so as to improve the strength of the overlapped place, and further improve the structure strength of the automobile. The closed cavity formed after the first longitudinal beam and the second longitudinal beam are overlapped, the position of the overlapped place that cannot be welded, the weak connecting strength of the overlapped place and the structure strength of the automobile are solved.

[0025] The above and other objects, advantages and features of the present utility model will become more apparent from the following detailed description of some embodiments thereof, when taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0026] Some specific embodiments of the present utility model will be described in detail hereinafter with reference to the accompanying drawings, in an exemplary and non-limiting manner. The same reference signs in the drawings denote the same or similar components or parts. It should be understood by those skilled in the art that the drawings are not necessarily drawn to scale. In the drawings:

[0027] Figure 1 is a schematic structural view of the automobile longitudinal beam connecting structure according to one embodiment of the present utility model;

[0028] Figure 2 is a schematic enlarged view of the automobile longitudinal beam connecting structure according to one embodiment of the present utility model;

[0029] Figure 3 is a schematic exploded view of the automobile longitudinal beam connecting structure according to one embodiment of the present utility model;

[0030] Figure 4 is a schematic sectional view of the automobile longitudinal beam connecting structure according to one embodiment of the present utility model.

[0031] LIST OF REFERENCE NUMERALS:

[0032] 100, first longitudinal beam; 110, first connecting section; 120, first beam body; 130, accommodating groove; 131, first connecting hole;

[0033] 200, second longitudinal beam; 210, second connecting section; 220, second beam body; 230, mounting groove; 231, second connecting hole;

[0034] 300, fastener; 310, threaded section;

[0035] 400, automobile floor. DETAILED DESCRIPTION

[0036] Reference will now be made to Figures 1 to 4The automobile longitudinal beam connecting structure and the automobile are described herein. In the description of the embodiments, it should be understood that the terms "first", "second" are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one of the features, that is, one or more of the features. In the description of the embodiments, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited. When a certain feature "includes or contains" a certain or certain features, unless otherwise specifically described, it indicates that other features and can further include other features.

[0037] Unless otherwise expressly specified and limited, the terms "set", "mount", "connected", "connected", "fixed", "coupled" and other terms should be broadly understood, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in the embodiments according to the specific circumstances.

[0038] In addition, in the description of the embodiments, the first feature "above" or "below" the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. That is, in the description of the embodiments, the first feature "above", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "below", "below" or "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0039] In the description of the embodiments, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the description, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0040] Figure 1is a schematic structural diagram of a longitudinal beam connecting structure according to an embodiment of the utility model, as shown in Figure 1 and referring to Figures 2 to 4 The utility model embodiment provides a longitudinal beam connecting structure of automobile. The longitudinal beam connecting structure of automobile includes first longitudinal beam 100, second longitudinal beam 200 and fastener 300.

[0041] First longitudinal beam 100 extends along the front and back direction. First longitudinal beam 100 includes first beam body 120 and first connecting section 110 arranged at intervals along the front and back direction. First connecting section 110 is provided with containing groove 130 with the opening upwards, and containing groove 130 is arranged through along the front and back direction.

[0042] Second longitudinal beam 200 extends along the front and back direction. Second longitudinal beam 200 includes second beam body 220 and second connecting section 210 arranged at intervals along the front and back direction, and second beam body 220 is arranged at intervals along the front and back direction with first beam body 120, and second beam body 220 is on the side of first beam body 120 close to first connecting section 110. Second connecting section 210 is arranged at one end of second beam body 220 close to first connecting section 110. Second connecting section is arranged in containing groove 130.

[0043] Fastener 300 penetrates the side wall of containing groove 130 to fasten and connect first connecting section 110 and second connecting section 210.

[0044] The above example is the same as the front and back direction of the automobile.

[0045] In the embodiment, first longitudinal beam 100 is overlapped from the lower side on the lower end of second longitudinal beam 200, and then first longitudinal beam 100 and second longitudinal beam 200 are fixedly connected by fastener 300 penetrating the side wall of containing groove 130. Containing groove 130 is arranged along the front and back direction, so that the side wall of containing groove 130 is arranged at intervals left and right. In the case that the wall thickness of second connecting section 210 is thin, for example, second connecting section 210 is in the form of plate or groove, fastener 300 can also penetrate second connecting section 210. In the case that the wall thickness of second connecting section 210 is thick, the end of fastener 300 can also be embedded in second connecting section 210, for example, the end of fastener 300 is screw-connected with second connecting section 210.

[0046] The first longitudinal beam 100 and the second longitudinal beam 200 are arranged in lap joint, and the connecting strength of the first longitudinal beam 100 and the second longitudinal beam 200 is improved. Moreover, compared with the welding connection of the first longitudinal beam 100 and the second longitudinal beam 200, the side wall of the lap joint part of the first longitudinal beam 100 and the second longitudinal beam 200 can be fixedly connected by the fastener 300, so that the strength of the lap joint part is improved, and the structural strength of the automobile is improved, and the problem that the connecting strength of the lap joint part is weak due to the fact that the closed cavity is formed after the first longitudinal beam 100 and the second longitudinal beam 200 are overlapped, and the position of the lap joint part cannot be welded is solved, and the structural strength of the automobile is improved.

[0047] In some embodiments of the utility model, as shown in Figure 4 The surface of the second connecting section 210 close to the accommodating groove 130 is matched with the profile of the accommodating groove 130.

[0048] In the embodiment, the second connecting section 210 is matched with the profile of the accommodating groove 130, the contact area of the first connecting section 110 and the second connecting section 210 is improved, and the connecting strength of the first longitudinal beam 100 and the second longitudinal beam 200 is improved.

[0049] In some embodiments of the utility model, as shown in Figure 4 The second connecting section 210 is provided with the mounting groove 230 with the opening upward. The mounting groove 230 is arranged through in the front-rear direction.

[0050] In the embodiment, the mounting groove 230 is arranged on the second connecting section 210, the material consumption of the second connecting section 210 in the production and manufacturing process is reduced, the strength of the groove-shaped structure is higher than that of the plate-shaped structure, the strength of the second longitudinal beam 200 is improved, the strength of the automobile is ensured, and the safety guarantee of the passenger is improved.

[0051] When the first connecting section 110 and the second connecting section 210 are connected, the fastener 300 penetrates the side wall of the accommodating groove 130 and the side wall of the mounting groove 230, so that the installation of the fastener 300 is realized, and the first connecting section 110 and the second connecting section 210 are fixedly connected. When the fastener 300 is a bolt, the mounting groove 230 can also provide space for the installation of the nut matched with the bolt.

[0052] In some embodiments of the utility model, as shown in Figure 4 At least one first connecting hole 131 is arranged on the groove wall of the accommodating groove 130. At least one second connecting hole 231 is arranged on the groove wall of the mounting groove 230.

[0053] The first connecting hole 131 and the second connecting hole 231 are arranged in one-to-one correspondence. The fastener 300 is inserted into the first connecting hole 131 and the corresponding second connecting hole 231.

[0054] In the embodiment, the mounting groove 230 is arranged along the front-rear direction, and the side walls of the mounting groove 230 are arranged at left and right intervals. The first connecting section 110 and the second connecting section 210 are both provided with a connecting hole, so that the fastener 300 is mounted, and the connection of the first longitudinal beam 100 and the second longitudinal beam 200 is simplified.

[0055] In some embodiments of the utility model, as shown in Figure 4 Two first connecting holes 131 are arranged on the two groove walls of the accommodating groove 130 respectively.

[0056] Two second connecting holes 231 are arranged on the two groove walls of the mounting groove 230 respectively.

[0057] The fastener 300 is two, and is inserted into a first connecting hole 131 and a corresponding second connecting hole 231 respectively.

[0058] In the embodiment, the two first connecting holes 131 are arranged on the left and right side walls of the accommodating groove 130 respectively, and the two second connecting holes 231 are arranged on the left and right side walls of the mounting groove 230 respectively, so that the two fasteners 300 are inserted into the left and right sides of the first connecting section 110 and the second connecting section 210 respectively. The first connecting section 110 and the second connecting section 210 are fastened by the two fasteners 300 from both sides, so that the connection of the first longitudinal beam 100 and the second longitudinal beam 200 is more firm, the structural strength of the automobile longitudinal beam is improved, and the automobile is weakened when subjected to a frontal collision.

[0059] In some embodiments of the utility model, as shown in Figure 4 The automobile longitudinal beam connecting structure further comprises a threaded section 310, and the threaded section 310 is fixedly connected to one side of the second connecting hole 231 away from the first connecting hole 131 and coaxially arranged with the second connecting hole 231.

[0060] The fastener 300 is a bolt, and the bolt is threadedly connected with the threaded section 310.

[0061] In the embodiment, the threaded section 310 is fixedly connected in the mounting groove 230, so that the worker or the machine can threadedly connect the threaded section 310 and the bolt without fixing the threaded section 310 with the other hand or the tool when installing the bolt.

[0062] In some embodiments of the utility model, as shown in Figure 4 The threaded section 310 is in contact with the inner wall of the mounting groove 230, so that the threaded section 310 and the bolt head extrude the first connecting section 110 and the second connecting section 210 from both sides after the bolt and the threaded section 310 are connected, and the connection strength of the first connecting section 110 and the second connecting section 210 is improved.

[0063] In some embodiments of the present application, the threaded segment 310 can be a nut. The nut can be fixedly connected in the mounting groove 230 by welding.

[0064] In some embodiments of the present application, as shown in Figure 4 the fastener 300 is a bolt, and the ratio between the length L1 of the bolt in the mounting groove 230 and the groove width H1 of the mounting groove 230 is 0.2 to 0.48 after the bolt is inserted into the first connecting hole 131 and the second connecting hole 231.

[0065] In the present embodiment, when the ratio between the length of the bolt in the mounting groove 230 and the groove width H1 of the mounting groove 230 is less than 0.2, the length of the bolt is short, or the mounting groove 230 is wide. Since the length of the bolt that can be threadedly connected with the nut is short, the tensile strength of the bolt is low, thereby reducing the stability of the connection between the first connecting segment 110 and the second connecting segment 210.

[0066] When the ratio between the length of the bolt in the mounting groove 230 and the groove width H1 of the mounting groove 230 is greater than 0.2, the length of the bolt is long. Although the length of the bolt that can be threadedly connected with the nut is greater, the excessive length of the bolt makes the cost of the bolt high, and also easily causes interference when the two bolts are inserted from the left and right sides of the first connecting segment 110 and the second connecting segment 210, respectively.

[0067] When the ratio between the length of the bolt in the mounting groove 230 and the groove width H1 of the mounting groove 230 is between 0.2 and 0.48, the stability of the connection between the first connecting segment 110 and the second connecting segment 210 is ensured, while the material usage of the bolt is reduced, and interference when the two bolts are inserted from the left and right sides of the first connecting segment 110 and the second connecting segment 210, respectively, is avoided.

[0068] In some embodiments of the present application, as shown in Figure 2 and Figure 4 the ratio between the length L2 of the first connecting segment 110 and the groove top width H2 of the first connecting segment 110 is 0.25 to 0.75.

[0069] In the present embodiment, when the ratio between the length of the first connecting segment 110 and the groove top width H2 of the first connecting segment 110 is less than 0.25, in the case that the width of the first connecting segment 110 is large, the weight of the first connecting segment 110 is heavy, but since the length of the first connecting segment 110 is relatively short, the contact area with the second connecting segment 210 is small, so that the connection strength at the connection between the first connecting segment 110 and the first connecting segment 110 is low, and the first connecting segment 110 is prone to falling off or breaking.

[0070] When the ratio of the length of the first connecting section 110 to the groove top width of the first connecting section 110 is greater than 0.25, the width of the first connecting section 110 is small and the length of the first connecting section 110 is relatively large, which will cause material waste of the first connecting section 110, increase production costs, and increase the overall weight of the vehicle.

[0071] When the ratio of the length of the first connecting section 110 to the groove top width of the first connecting section 110 is between 0.25 and 0.75, while ensuring the stability of the connection between the first connecting section 110 and the second connecting section 210, the material usage of the first connecting section 110 and the second connecting section 210 is reduced, thereby reducing the overall weight of the vehicle.

[0072] In some embodiments of the present invention, Figure 4 As shown, the receiving groove 130 is a cross-shaped groove with an opening facing upward.

[0073] In this embodiment, a flange extends outward from the top of the receiving groove 130, thereby increasing the strength of the first connecting section 110. The flange also increases the contact area between the first longitudinal beam 100 and the vehicle floor 400, thereby improving the stability of the first longitudinal beam 100.

[0074] In some other embodiments of the present invention, the first connecting section 110 is an upwardly opening arc-shaped groove, and the top edge of the groove wall of the arc-shaped groove extends horizontally toward a side away from the interior of the arc-shaped groove.

[0075] The present invention provides a car. In some embodiments of the present invention, such as Figure 4 As shown, the automobile includes the automobile longitudinal beam connection structure in any of the above embodiments and an automobile floor 400 .

[0076] The first longitudinal beam 100 and the second longitudinal beam 200 are fixedly connected to the lower side of the vehicle floor 400 to support the vehicle floor 400 .

[0077] In the embodiment, the first longitudinal beam 100 is overlapped from the lower side to the lower end of the second longitudinal beam 200, and the first longitudinal beam 100 and the second longitudinal beam 200 are fixedly connected by the fastener 300 penetrating the side wall of the accommodating groove 130. The overlapped arrangement of the first longitudinal beam 100 and the second longitudinal beam 200 improves the connection strength of the first longitudinal beam 100 and the second longitudinal beam 200. Moreover, compared with the welding connection of the first longitudinal beam 100 and the second longitudinal beam 200, the side wall of the overlapped part of the first longitudinal beam 100 and the second longitudinal beam 200 can be fixedly connected by the fastener 300, so as to improve the strength of the overlapped part, and further improve the structural strength of the automobile, thereby solving the problem that the first longitudinal beam 100 and the second longitudinal beam 200 form a closed cavity with the automobile floor 400 when the first longitudinal beam 100 and the second longitudinal beam 200 are overlapped, and the overlapped part has a position that cannot be welded, and further the connection strength of the overlapped part is weak, and improving the structural strength of the automobile.

[0078] At this point, those skilled in the art should recognize that, although the present application has been shown and described in detail in the above embodiments, many other variations or modifications can be determined or deduced directly according to the disclosure of the present application without departing from the spirit and scope of the present application, which conform to the principles of the present application. Therefore, the scope of the present application should be understood and recognized as covering all these other variations or modifications.

Claims

1. An automobile longitudinal beam connection structure, characterized in that: Comprising: a first longitudinal beam extending in a front-rear direction; the first longitudinal beam comprising a first beam body and a first connecting section connected to one end of the first beam body in a length direction; the first connecting section is provided with an upwardly open receiving groove, the receiving groove being provided through in a front-rear direction; a second longitudinal beam extending in a front-rear direction; the second longitudinal beam comprising a second beam body and a second connecting section connected to one end of the second beam body in a length direction, the second beam body being provided spaced apart from the first beam body in a front-rear direction, and the second beam body being on a side of the first beam body close to the first connecting section; the second connecting section being provided at one end of the second beam body close to the first connecting section; the second connecting section being provided in the receiving groove; a fastener penetrating a side wall of the receiving groove to fasten the first connecting section and the second connecting section.

2. The automobile longitudinal beam connecting structure according to claim 1, wherein a surface of the second connecting section close to the receiving groove is matched with a profile of the receiving groove.

3. The automobile longitudinal beam connecting structure according to claim 1, wherein the second connecting section is provided with an upwardly open mounting groove; the mounting groove being provided through in a front-rear direction.

4. The automobile longitudinal beam connecting structure according to claim 3, wherein at least one first connecting hole is provided on a groove wall of the receiving groove; at least one second connecting hole is provided on a groove wall of the mounting groove; the first connecting hole and the second connecting hole are provided one by one in correspondence; the fastener is inserted into the first connecting hole and the corresponding second connecting hole.

5. The automobile longitudinal beam connecting structure according to claim 4, wherein one first connecting hole is respectively provided on two groove walls of the receiving groove; one second connecting hole is respectively provided on two groove walls of the mounting groove.

6. The automobile longitudinal beam connecting structure according to claim 4, wherein the automobile longitudinal beam connecting structure further comprises a threaded section, the threaded section being fixedly connected to a side of the second connecting hole away from the first connecting hole, and being coaxially provided with the second connecting hole; the fastener is a bolt, the bolt being threadedly connected with the threaded section.

7. The automobile longitudinal beam connecting structure according to claim 4, wherein the length of the bolt in the mounting groove after being inserted into the first connecting hole and the second connecting hole is 0.2 to 0.48 times the groove width of the mounting groove.

8. The automobile longitudinal beam connecting structure according to claim 1, wherein the ratio of the length of the first connecting section to the groove top width of the first connecting section is 0.25 to 0.

75.

9. The automobile longitudinal beam connecting structure according to claim 1, wherein the receiving groove is a upwardly open V-shaped groove; or the first connecting section is an upwardly open arc-shaped groove, a top edge of a groove wall of the arc-shaped groove extending horizontally away from an inside of the arc-shaped groove.

10. An automobile characterized by comprising: Comprising: the automobile longitudinal beam connecting structure according to any one of claims 1 to 9; The first longitudinal beam and the second longitudinal beam are fixedly connected to the lower side of the automobile floor to support the automobile floor.

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