Staggered splicing structure of automobile chassis guard plates

Abstract

The utility model discloses a staggered splicing structure of an automobile chassis guard plate, which comprises at least a first base plate and a second base plate covering the bottom of an automobile, and the two base plates are staggered and spliced through a connecting structure extending in a staggered manner. The connecting structure comprises a first connecting plate arranged on the first substrate and a second connecting plate arranged on the second substrate in a spaced mode, and the first connecting plate and the second connecting plate extend to the upper / lower surface of the opposite substrate in a staggered mode to form mechanical interlocking. Positioning structures are arranged at the two ends of the base plate, each positioning structure comprises a first mounting part and a second mounting part which are inserted in a stacked mode, precise positioning is achieved through matching of the protrusions and the recesses, and fixing is achieved through coaxial mounting holes. Notch structures are symmetrically arranged at the connecting position of the connecting plate and the base plate, and stress distribution is optimized. According to the structure, through mechanical interlocking and positioning design, the splicing strength and air tightness are improved, meanwhile, the assembling complexity is reduced, and the structure is suitable for efficient installation of guard plates of various vehicle types.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field especially relates to a staggered splicing structure of automobile chassis apron. BACKGROUND

[0002] With the promotion of the light weight and aerodynamic performance requirements of the automobile, the design of the automobile bottom apron needs to consider low wind resistance, high structural strength and assembly convenience. The traditional apron adopts the integral type or the simple splicing structure, and the following problems exist: the flat apron is easy to produce airflow separation when driving at high speed, increase the tail vortex, and cause the wind resistance coefficient to rise; the existing splicing structure depends on the direct fixing of the bolt, and the stress concentration at the connecting place is easy to cause fatigue cracking, and the alignment accuracy is low. SUMMARY

[0003] The utility model discloses a staggered splicing structure of automobile chassis apron which overcomes the shortcomings and deficiencies of the prior art.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a staggered splicing structure of automobile chassis apron, comprising at least two first base plates and second base plates covering the bottom of the automobile, a group of splicing units are formed between the first base plate and the second base plate, and a connecting structure is arranged between the two base plates; the connecting structure comprises a plurality of first connecting plates arranged at intervals along the length direction of the first base plate, and a plurality of second connecting plates arranged at intervals along the length direction of the second base plate; the first connecting plate and the second connecting plate are mutually staggered, one end of the first connecting plate extends to the upper surface or the lower surface of the second base plate, and one end of the second connecting plate extends to the upper surface or the lower surface of the first base plate.

[0005] As a preferred technical scheme of the utility model, a positioning structure is further arranged between the first base plate and the second base plate; the positioning structure comprises two first mounting parts arranged at the two ends of the first base plate, and two second mounting parts arranged at the two ends of the second base plate; the first mounting part and the second mounting part are arranged in a stacked manner, the first mounting part is upwardly convex and forms a recess on the back surface, and the convex part of the second mounting part is inserted into the recess on the back surface of the first mounting part; coaxial first mounting holes and second mounting holes are formed in the first mounting part and the second mounting part.

[0006] As a preferred technical scheme of the utility model, the convex part of the first mounting part and the second mounting part is matched with the recess in shape, and is fixed coaxially through the first mounting hole and the second mounting hole.

[0007] As a preferred technical scheme of the utility model, the upper surface or the lower surface of the part where the first connecting plate is connected with the first base plate is recessed, so that the first connecting plate can extend to the upper surface or the lower surface of the adjacent second base plate; the upper surface or the lower surface of the part where the second connecting plate is connected with the second base plate is recessed, so that the second connecting plate can extend to the upper surface or the lower surface of the adjacent first base plate.

[0008] As a preferred technical scheme of the utility model, the two side walls of the first connecting plate and the second connecting plate are symmetrically provided with notch structures at the connection positions of the first base plate and the second base plate.

[0009] As a preferred technical scheme of the utility model, the first base plate and the second base plate are provided with a plurality of third mounting portions at the profile edges, and third mounting holes for fixedly connecting with the vehicle body are formed in the third mounting portions.

[0010] As a preferred technical scheme of the utility model, the third mounting holes are matched with the corresponding mounting portions of the vehicle body through bolts or welding.

[0011] Compared with the prior art, the utility model has the beneficial effects that: the staggered splicing structure and the misaligned design of the connecting plate guide the smooth transition of airflow, reduce the tail vortex, and reduce the wind resistance coefficient; the mechanical interlocking of the connecting plate and the notch structure disperse the stress at the connection position, avoid fatigue cracking, and prolong the service life of the protective plate; the layering and insertion design of the positioning structure realize the rapid alignment of the base plate, are matched with the fixed shaft mounting hole, reduce the adjustment process; the modular splicing reduces the material consumption of the whole plate, supports the universal use of multiple vehicle platforms, and reduces the development and manufacturing cost. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the structure schematic view of two base plates spliced in the utility model;

[0013] Figure 2 It is Figure 1 The enlarged view of local part A;

[0014] Figure 3 It is the structure schematic view of the first base plate in the utility model;

[0015] Figure 4 It is Figure 3 The enlarged view of local part B

[0016] Figure 5 It is the structure schematic view of the second base plate in the utility model;

[0017] Figure 6 It is Figure 5 The enlarged view of local part C.

[0018] Reference numerals: 1. First substrate; 2. Second substrate; 3. First connecting plate; 4. Second connecting plate; 5. First mounting part; 6. Second mounting part; 7. First mounting hole; 8. Second mounting hole; 9. Notch structure; 10. Third mounting part; 11. Third mounting hole; 12. Positioning structure. Detailed Implementation

[0019] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0020] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0021] like Figures 1 to 6 The illustrated staggered splicing structure of an automotive chassis guard plate includes at least two first substrates 1 and second substrates 2 covering the bottom of the vehicle. The first substrates 1 and second substrates 2 form a splicing unit, and a connecting structure is provided between the two substrates. The connecting structure includes several first connecting plates 3 spaced apart along the length of the first substrate 1, and several second connecting plates 4 spaced apart along the length of the second substrate 2. The first connecting plates 3 and second connecting plates 4 are staggered, with one end of the first connecting plate 3 extending to the upper or lower surface of the second substrate 2, and one end of the second connecting plate 4 extending to the upper or lower surface of the first substrate 1. This staggered splicing structure and staggered connecting plate design has a scientific basis for aerodynamic performance optimization, reducing wind resistance by suppressing airflow separation and optimizing the airflow path. Although the patent text does not provide specific experimental data, based on fluid mechanics principles and similar engineering cases, the description of the technical effect is reasonable and achievable.

[0022] The staggered splicing structure and the misaligned design of the connecting plates guide the airflow to a smooth transition, reduce tail vortices, and lower the drag coefficient; the mechanical interlocking and notch structure 9 of the connecting plates disperse the stress at the connection, avoid fatigue cracking, and extend the service life of the protective plate; the turbulence effect of the staggered structure of the first connecting plate 3 and the second connecting plate 4 is similar to the golf ball dimple effect.

[0023] The positioning structure 12 is arranged between the first substrate 1 and the second substrate 2, and comprises two first mounting portions 5 arranged at two ends of the first substrate 1 and two second mounting portions 6 arranged at two ends of the second substrate 2; the first mounting portion 5 and the second mounting portion 6 are arranged in a stacked manner, the first mounting portion 5 is upwardly protruded and has a recess formed on a back surface, and the protruded portion of the second mounting portion 6 is inserted into the recess of the back surface of the first mounting portion 5; the first mounting portion 5 and the second mounting portion 6 are coaxially provided with a first mounting hole 7 and a second mounting hole 8.

[0024] The stacked and inserted design of the positioning structure 12 realizes rapid alignment of the substrates, and the coaxial mounting holes are fixed, thereby reducing the adjustment process; the modular splicing reduces the amount of material of the whole board, supports the general use of multiple vehicle platforms, and reduces the development and manufacturing costs.

[0025] The protruded portion of the first mounting portion 5 and the second mounting portion 6 is matched with the recess in shape and is coaxially fixed through the first mounting hole 7 and the second mounting hole 8.

[0026] The upper surface or the lower surface of the part of the first connecting plate 3 connected with the first substrate 1 is recessed, so that the first connecting plate 3 can extend to the upper surface or the lower surface of the adjacent second substrate 2; the upper surface or the lower surface of the part of the second connecting plate 4 connected with the second substrate 2 is recessed (so that the second connecting plate 4 can be arranged on the upper surface or the lower surface of the second substrate 2, and the recessed upper surface or lower surface of the connected part depends on the actual layout and can be adjusted according to the actual situation), so that the second connecting plate 4 can extend to the upper surface or the lower surface of the adjacent first substrate 1.

[0027] The two side walls of the first connecting plate 3 and the second connecting plate 4 are respectively and symmetrically provided with a notch structure 9 (i.e. a notch is left, which is preferably rectangular, and can be triangular or other geometric shapes) at the connection with the first substrate 1 and the second substrate 2, and the notch structure 9 acts on the first connecting plate 3 and the second connecting plate 4, so as to balance and disperse the stress concentration at the connection of the two plates with the substrate, thereby avoiding fatigue damage caused by rigid connection.

[0028] The first substrate 1 and the second substrate 2 are provided with a plurality of third mounting portions 10 at the profile edges in a spaced manner, the third mounting portion 10 is provided with a third mounting hole 11 for fixed connection with the body of the vehicle, and in the embodiment, the third mounting hole 11 is cooperated with the corresponding mounting portion of the body of the vehicle through a bolt or welding.

[0029] The basic principle, main features and advantages of the present application are shown and described above, and those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A staggered splicing structure for an automotive chassis guard plate, characterized in that, The system includes at least two first substrates (1) and second substrates (2) covering the bottom of the vehicle. The first substrates (1) and second substrates (2) form a splicing unit, and a connection structure is provided between the two substrates. The connection structure includes a plurality of first connecting plates (3) spaced apart along the length direction of the first substrate (1) and a plurality of second connecting plates (4) spaced apart along the length direction of the second substrate (2). The first connecting plates (3) and the second connecting plates (4) are offset from each other, and one end of the first connecting plate (3) extends to the upper or lower surface of the second substrate (2), and one end of the second connecting plate (4) extends to the upper or lower surface of the first substrate (1).

2. The staggered splicing structure of the automobile chassis guard plate according to claim 1, characterized in that: A positioning structure (12) is also provided between the first substrate (1) and the second substrate (2); the positioning structure (12) includes two first mounting portions (5) provided at both ends of the first substrate (1) and two second mounting portions (6) provided at both ends of the second substrate (2); the first mounting portions (5) and the second mounting portions (6) are stacked on top of each other, the first mounting portions (5) are raised upward and the back side is recessed, and the raised part of the second mounting portion (6) is inserted into the recess on the back side of the first mounting portion (5); the first mounting portion (5) and the second mounting portion (6) are coaxially provided with a first mounting hole (7) and a second mounting hole (8).

3. The staggered splicing structure of the automobile chassis guard plate according to claim 2, characterized in that: The raised portions of the first mounting portion (5) and the second mounting portion (6) match the shape of the recessed portion and are coaxially fixed by the first mounting hole (7) and the second mounting hole (8).

4. The staggered splicing structure of the automobile chassis guard plate according to claim 1, characterized in that: The upper or lower surface of the first connecting plate (3) connected to the first substrate (1) is recessed, so that the first connecting plate (3) can extend to the upper or lower surface of the adjacent second substrate (2); the upper or lower surface of the second connecting plate (4) connected to the second substrate (2) is recessed, so that the second connecting plate (4) can extend to the upper or lower surface of the adjacent first substrate (1).

5. The staggered splicing structure of the automobile chassis guard plate according to claim 1, characterized in that: Notch structures (9) are symmetrically provided at the connection points between the two side walls of the first connecting plate (3) and the second connecting plate (4) and the first substrate (1) and the second substrate (2).

6. The staggered splicing structure of the automobile chassis guard plate according to claim 1, characterized in that: The first substrate (1) and the second substrate (2) are provided with a plurality of third mounting portions (10) at intervals along their contour edges. The third mounting portions (10) are provided with third mounting holes (11) for fixed connection with the vehicle body.

7. The staggered splicing structure of the automobile chassis guard plate according to claim 6, characterized in that: The third mounting hole (11) is fitted with the corresponding mounting part of the vehicle body by bolts or welding.

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