Composite reinforcing rib structure and automobile part

Abstract

The utility model provides a composite material reinforcing rib structure and an automobile part, and belongs to the technical field of material processing, the composite material reinforcing rib structure comprises a composite material main body, the composite material main body comprises a main body part and a connecting part, the connecting part is connected with one side of the main body part, and a glue reducing weakening groove is formed in the side, where the connecting part is located, of the main body part and is close to the connecting part; and the reinforcing rib part is connected with the connecting part. The composite material has the advantages that the glue reducing weakening groove is formed in the face, where the connecting part is located, of the main body part close to the connecting part, so that when the composite material main body and the reinforcing rib part are formed, shrinkage marks formed on the appearance of the main body part by the reinforcing rib part can be counteracted, appearance quality is not affected by rib positions, the structural design freedom degree is improved, and the service life of the composite material is prolonged. And meanwhile, the process and tool input cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to material processing technical field relates to a kind of composite reinforcing rib structure and automobile parts. BACKGROUND

[0002] With the increasing demand of automobile lightweight, continuous fiber composite materials are more and more widely used in the field of automobile manufacturing.

[0003] The main part of the continuous fiber composite material hybrid product is usually a continuous fiber composite material, and the reinforcing part or structural mounting part is formed by filling ordinary injection molding plastic. Due to the influence of process, the reinforcing rib structure will form a shrinkage mark on the appearance of the continuous fiber composite material, affecting the appearance of the product, and there is a lot of room for improvement. SUMMARY

[0004] The utility model discloses a kind of composite reinforcing rib structure and automobile parts to solve the above problems existing in prior art.

[0005] The utility model discloses the purpose can be realized by the following technical scheme: a kind of composite reinforcing rib structure, comprising:

[0006] The main part of the composite material includes a main body and a connecting part, the connecting part is connected to one side of the main body, and a glue-weakening groove is formed near the connecting part on the side of the main body where the connecting part is located.

[0007] The reinforcing rib part is connected to the connecting part.

[0008] In the above-mentioned composite reinforcing rib structure, the glue-weakening groove is an arc-shaped groove.

[0009] In the above-mentioned composite reinforcing rib structure, the depth of the arc-shaped groove is not less than 0.2 times the thickness of the main body and not greater than 0.5 times the thickness of the main body, and the width of the arc-shaped groove is not less than 1.5 times the depth of the arc-shaped groove and not greater than 2 times the depth of the arc-shaped groove.

[0010] In the above-mentioned composite reinforcing rib structure, the arc-shaped grooves are distributed along the matrix of the main part of the composite material, the number of arc-shaped grooves is not less than 2 and not greater than 3, and the distance between two adjacent arc-shaped grooves is not less than 1.1 times the width of the arc-shaped groove and not greater than 1.2 times the width of the arc-shaped groove.

[0011] In the above-mentioned composite reinforcing rib structure, the glue-weakening groove is a rectangular groove.

[0012] In the composite reinforcing rib structure, the rectangular groove has a depth of not less than 0.2 times the thickness of the main body part and not more than 0.5 times the thickness of the main body part, and a width of not less than 1.5 times the depth of the rectangular groove and not more than 2 times the depth of the rectangular groove.

[0013] In the composite reinforcing rib structure, the rectangular grooves are distributed along the matrix of the composite main body, the number of the rectangular grooves is not less than 2 and not more than 3, and the distance between two adjacent rectangular grooves is not less than 1.1 times the width of the rectangular groove and not more than 1.2 times the width of the rectangular groove.

[0014] In the composite reinforcing rib structure, the glue-reducing weakening groove is provided as a slope-shaped groove, and the depth of the slope-shaped groove gradually increases as approaching the connecting part along the main body part.

[0015] In the composite reinforcing rib structure, the slope-shaped groove has a depth of not less than 0.2 times the thickness of the main body part and not more than 0.5 times the thickness of the main body part, and a width of not less than 1.5 times the depth of the slope-shaped groove and not more than 2 times the depth of the slope-shaped groove.

[0016] In the composite reinforcing rib structure, the composite main body is provided as a continuous fiber composite material part, and the reinforcing rib part is provided as an engineering plastic part.

[0017] In the composite reinforcing rib structure, the composite main body and the reinforcing rib part are integrally formed by mold injection.

[0018] The utility model also provides an automobile part comprising the composite reinforcing rib structure.

[0019] Compared with the prior art, the utility model has the advantages of:

[0020] 1. The glue-reducing weakening groove is formed on the surface of the main body part close to the connecting part, so that the shrinkage mark formed by the reinforcing rib part on the appearance of the main body part can be offset when the composite main body and the reinforcing rib part are formed, the appearance quality is not affected by the rib position, the structural design freedom is improved, and the process and tooling investment costs are reduced.

[0021] 2. The composite main body and the reinforcing rib part are integrally formed by mold injection, so that the process steps and time are reduced, and the process and tooling investment costs are reduced. Since the glue-reducing weakening groove on the main body part can offset the shrinkage mark formed by the reinforcing rib part on the appearance of the main body part, the appearance influence caused by integrally forming by mold injection is not considered.

[0022] 3. The depth and width of the glue-weakening groove are set to ensure that the strength of the main body part is ensured while the indentation formed by the reinforcing rib part at the appearance of the main body part is offset.

[0023] 4. The glue-weakening grooves are distributed along the matrix and the distance between two adjacent glue-weakening grooves is ensured to ensure that the strength of the main body part is ensured while the indentation formed by the reinforcing rib part at the appearance of the main body part is offset. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structure schematic view of the embodiment one of the present application.

[0025] Figure 2 It is a structure schematic view of the embodiment two of the present application.

[0026] Figure 3 It is a structure schematic view of the embodiment three of the present application.

[0027] Figure 4 It is a structure schematic view of the embodiment four of the present application.

[0028] Figure 5 It is a structure schematic view of the embodiment five of the present application.

[0029] In the figure, 100, composite main body; 110, main body part; 111, glue-weakening groove; 120, connecting part; 200, reinforcing rib part. DETAILED DESCRIPTION

[0030] The following is a specific embodiment of the present application and further describes the technical solution of the present application in combination with the drawings, but the present application is not limited to these embodiments.

[0031] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications also change accordingly.

[0032] In addition, the descriptions such as "first", "second", "one" and the like in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0035] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0036] Example 1

[0037] like Figure 1 As shown, a composite material reinforcing rib structure includes: a composite material body 100 and a reinforcing rib portion 200.

[0038] The composite body 100 includes a main body 110 and a connecting part 120. The connecting part 120 is connected to one side of the main body 110. A reducing adhesive weakening groove 111 is formed on the side of the main body 110 where the connecting part 120 is located, close to the connecting part 120.

[0039] Specifically, the composite material body 100 is configured as a continuous fiber composite material part.

[0040] Continuous fiber composite parts are high-performance structural materials that use long fibers (such as glass fiber, carbon fiber or aramid fiber) as reinforcing phases and combine them with matrix materials (such as resin, metal or ceramic).

[0041] Continuous fiber composite material parts can provide higher strength and stiffness than traditional materials; while maintaining a lower density, thus having a significant weight advantage over traditional materials such as metals; while having good corrosion resistance; and can optimize the performance of specific areas by changing the direction, layering method and thickness of the fibers to meet different mechanical requirements; in addition, continuous fiber composite materials have good fatigue resistance; can withstand repeated loading without being easily damaged, especially carbon fiber reinforced plastics have a near-zero or very low thermal expansion coefficient, which is crucial for precise size control.

[0042] The reinforcing rib part 200 is connected to the connecting part 120.

[0043] Specifically, the reinforcing rib part 200 is provided as an engineering plastic part.

[0044] Engineering plastic parts refer to parts made of plastic materials with excellent mechanical properties, thermal stability and chemical resistance. Compared with general-purpose plastics, engineering plastics can work in more severe environments and usually have higher strength, rigidity, wear resistance and dimensional stability.

[0045] Engineering plastics can withstand large loads without deformation or breakage, suitable for structural parts; can maintain physical and mechanical properties at high temperatures, suitable for high-temperature applications. At the same time, it has good chemical stability and electrical insulation performance; can be processed by various forming processes such as injection molding, extrusion, blow molding, etc., easy to realize complex shape design.

[0046] In the prior art, most of them use two-step forming method, first mold forming composite material main body 100 of continuous fiber composite material, then secondary inlay injection molding forming reinforcing rib part 200, although the appearance is not affected by shrinkage, but the process and mold cost is relatively high.

[0047] In the present embodiment, a glue-weakening groove 111 is formed on the side of the main body part 110 where the connecting part 120 is located, close to the connecting part 120, so that when the composite material main body 100 and the reinforcing rib part 200 are formed, the shrinkage formed by the reinforcing rib part 200 on the appearance of the main body part 110 can be offset, the appearance quality is not affected by the rib position, the structural design freedom is improved, and the process and tooling investment cost is reduced.

[0048] As shown in Figure 1 On the basis of the above embodiment, the composite material main body 100 and the reinforcing rib part 200 are integrally formed by mold injection.

[0049] In this embodiment, the composite body 100 and the reinforcing rib 200 are integrally formed by compression molding, which reduces the process steps and time, and also reduces the process and tooling costs. Since the shrinkage groove 111 on the body 110 can offset the shrinkage marks formed by the reinforcing rib 200 on the appearance of the body 110, there is no need to consider the appearance impact caused by compression molding.

[0050] like Figure 1 As shown, based on the above embodiment, the adhesive-reducing weakening groove 111 is configured as an arc-shaped groove.

[0051] like Figure 1 As shown, based on the above embodiment, the depth b of the arc-shaped groove is not less than 0.2 times the thickness a of the main body 110 and not greater than 0.5 times the thickness a of the main body 110, and the width c of the arc-shaped groove is not less than 1.5 times the depth b of the arc-shaped groove and not greater than 2 times the depth b of the arc-shaped groove.

[0052] In this embodiment, the depth and width of the arc groove are set in such a way that the strength of the main body 110 is guaranteed while offsetting the shrinkage formed by the reinforcing rib 200 on the appearance of the main body 110.

[0053] Example 2

[0054] like Figure 2 As shown, the difference between Embodiment 2 and Embodiment 1 is that the adhesive reduction and weakening groove 111 is set as a rectangular groove, while the other structures are the same.

[0055] like Figure 2 As shown, based on the above embodiment, the depth b of the rectangular groove is not less than 0.2 times the thickness a of the main body 110 and not greater than 0.5 times the thickness a of the main body 110, and the width c of the rectangular groove is not less than 1.5 times the depth b of the rectangular groove and not greater than 2 times the depth b of the rectangular groove.

[0056] In this embodiment, the depth and width of the rectangular groove are set in such a way that the shrinkage formed by the reinforcing rib 200 on the appearance of the main body 110 is offset, while the strength of the main body 110 is guaranteed.

[0057] Example 3

[0058] like Figure 3 As shown, the difference between Embodiment 3 and Embodiment 1 is that, based on Embodiment 1, the arc-shaped grooves are distributed along the composite body 100 matrix, the number of arc-shaped grooves is not less than 2 and not more than 3, and the distance e between two adjacent arc-shaped grooves is not less than 1.1 times the width c of the arc-shaped groove and not more than 1.2 times the width c of the arc-shaped groove.

[0059] In this embodiment, the distribution of arc-shaped grooves along the matrix and the spacing between two adjacent arc-shaped grooves are such that the shrinkage formed by the reinforcing ribs 200 on the appearance of the main body 110 is offset while the strength of the main body 110 is guaranteed.

[0060] Example 4

[0061] like Figure 4 As shown, the difference between Embodiment 4 and Embodiment 2 is that, based on Embodiment 2, the rectangular grooves are distributed along the composite body 100 matrix, the number of rectangular grooves is not less than 2 and not more than 3, and the distance e between two adjacent rectangular grooves is not less than 1.1 times the width c of the rectangular groove and not more than 1.2 times the width c of the rectangular groove.

[0062] In this embodiment, the rectangular grooves are distributed along the matrix and the spacing between two adjacent rectangular grooves is ensured to counteract the shrinkage formed on the appearance of the reinforcing ribs 200 on the main body 110 while maintaining the strength of the main body 110.

[0063] Example 5

[0064] like Figure 5 As shown, the difference between Embodiment 5 and Embodiment 1 is that the adhesive reduction and weakening groove 111 is set as a sloping groove, and the sloping groove gradually deepens along the main body 110 as it approaches the connecting part 120.

[0065] like Figure 5 As shown, based on the above embodiment, the depth b of the ramp groove is not less than 0.2 times the thickness a of the main body 110 and not greater than 0.5 times the thickness a of the main body 110, and the width c of the ramp groove is not less than 1.5 times the depth b of the ramp groove and not greater than 2 times the depth b of the ramp groove.

[0066] In this embodiment, the depth and width of the sloping groove are set in such a way that the strength of the main body 110 is guaranteed while offsetting the shrinkage formed by the reinforcing rib 200 on the appearance of the main body 110.

[0067] like Figures 1-5 As shown, an automotive component includes a composite reinforcing rib structure as described in Embodiments 1 to 5.

Claims

1. A composite stiffener structure, characterized by, Comprise: A composite body comprising a body part and a connecting part connected to one side of the body part, a glue-weakening groove being formed on the side of the body part where the connecting part is located; A reinforcing rib part connected to the connecting part.

2. A composite stringer structure as defined in claim 1, wherein: The glue-weakening groove is an arc-shaped groove.

3. A composite stringer structure as defined in claim 2, wherein: The depth of the arc-shaped groove is not less than 0.2 times the thickness of the body part and not more than 0.5 times the thickness of the body part, and the width of the arc-shaped groove is not less than 1.5 times the depth of the arc-shaped groove and not more than 2 times the depth of the arc-shaped groove.

4. A composite stringer structure as defined in claim 3 wherein: The arc-shaped grooves are distributed in a matrix along the composite body, the number of the arc-shaped grooves is not less than 2 and not more than 3, and the distance between two adjacent arc-shaped grooves is not less than 1.1 times the width of the arc-shaped groove and not more than 1.2 times the width of the arc-shaped groove.

5. A composite stringer structure as defined in claim 1 wherein: The glue-weakening groove is a rectangular groove.

6. A composite stringer structure as defined in claim 5, wherein: The depth of the rectangular groove is not less than 0.2 times the thickness of the body part and not more than 0.5 times the thickness of the body part, and the width of the rectangular groove is not less than 1.5 times the depth of the rectangular groove and not more than 2 times the depth of the rectangular groove.

7. A composite stringer structure as defined in claim 6 wherein: The rectangular grooves are distributed in a matrix along the composite body, the number of the rectangular grooves is not less than 2 and not more than 3, and the distance between two adjacent rectangular grooves is not less than 1.1 times the width of the rectangular groove and not more than 1.2 times the width of the rectangular groove.

8. A composite stringer structure as defined in claim 1 wherein: The glue-weakening groove is a slope-shaped groove, the depth of the slope-shaped groove gradually increases as it approaches the connecting part along the body part.

9. A composite stringer structure as defined in claim 8 wherein: The depth of the slope-shaped groove is not less than 0.2 times the thickness of the body part and not more than 0.5 times the thickness of the body part, and the width of the slope-shaped groove is not less than 1.5 times the depth of the slope-shaped groove and not more than 2 times the depth of the slope-shaped groove.

10. A composite stringer structure as defined in claim 1 wherein: The composite body is a continuous fiber composite material part, and the reinforcing rib part is an engineering plastic part.

11. A composite stringer structure as defined in claim 10 wherein: The composite body and the reinforcing rib part are integrally formed by mold injection.

12. An automotive component, characterized by A composite reinforcing rib structure as claimed in any one of claims 1-11.

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