CN107933030B - A fiber reinforced composite sandwich panel structure with a lock - Google Patents
A fiber reinforced composite sandwich panel structure with a lock Download PDFInfo
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- CN107933030B CN107933030B CN201711351471.7A CN201711351471A CN107933030B CN 107933030 B CN107933030 B CN 107933030B CN 201711351471 A CN201711351471 A CN 201711351471A CN 107933030 B CN107933030 B CN 107933030B
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- 239000003733 fiber-reinforced composite Substances 0.000 title claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 20
- 239000010410 layer Substances 0.000 claims description 71
- 239000000835 fiber Substances 0.000 claims description 51
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 10
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 9
- 239000004917 carbon fiber Substances 0.000 claims description 9
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 2
- 239000012790 adhesive layer Substances 0.000 claims 1
- 238000003466 welding Methods 0.000 abstract description 4
- 239000002131 composite material Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012792 core layer Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
- B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J5/00—Doors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/08—Front or rear portions
- B62D25/10—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Road Paving Structures (AREA)
- Laminated Bodies (AREA)
Abstract
本发明公开了一种带锁扣的纤维增强复合材料夹层板结构,包括由纤维增强复合材料制作的夹层板、预设在所述夹层板内的预埋件、设置在所述夹层板外且与所述预埋件可拆卸连接的锁扣底座以及安装在所述锁扣底座上的锁扣。本发明可以在不采用焊接的情况下,使得锁扣仍能与纤维增强复合材料夹层板安装固定,并保证一定的连接强度,满足不同工况下的汽车覆盖件锁紧需求。
The invention discloses a fiber-reinforced composite sandwich panel structure with a lock, comprising a sandwich panel made of fiber-reinforced composite material, a pre-embedded part preset in the sandwich panel, a sandwich panel arranged outside the sandwich panel and A lock base detachably connected to the embedded part and a lock installed on the lock base. The invention can still install and fix the lock buckle with the fiber reinforced composite material sandwich panel without using welding, and ensure a certain connection strength, so as to meet the locking requirements of automobile cover parts under different working conditions.
Description
技术领域technical field
本发明涉及一种带锁扣的闭合件,尤其涉及一种带锁扣的纤维增强复合材料夹层板结构,可应用于汽车或飞机等工程机械的引擎盖、车门、尾箱盖等具有锁扣的闭合件。The invention relates to a closure with a lock, in particular to a fiber-reinforced composite sandwich panel structure with a lock, which can be applied to hoods, doors, trunk lids, etc. of construction machinery such as automobiles or airplanes. of the closure.
背景技术Background technique
近些年来,随着汽车保有量的逐步增加,进而造成的气候变化问题越来越严峻,从国家到汽车厂商都已认识到环境保护及合理利用能源的重要性。对于汽车产业来说,尤值当前各国大力发展新能源汽车之际,实现汽车的轻量化已经成为行业可持续发展的必经之路。而碳纤维复合材料由于其具备优异的综合性能,在汽车的轻量化之路上被寄予了极高期望。相对于当前汽车上应用的高强钢及铝合金等材料来说,在同等强度下,碳纤维复合材料的比重低于铝合金,更是远低于高强钢。除了质轻的优势外,碳纤维复合材料还具备高强度、高模量、耐腐蚀、耐高温等优良性能。由此可见,碳纤维复合材料在汽车工业中的应用具备非常大的潜力。In recent years, with the gradual increase in the number of automobiles, the problem of climate change has become more and more serious. From countries to automobile manufacturers, they have realized the importance of environmental protection and rational use of energy. For the automobile industry, especially at a time when countries are vigorously developing new energy vehicles, realizing the lightweight of automobiles has become the only way for the sustainable development of the industry. Due to its excellent comprehensive performance, carbon fiber composite materials have been placed on the road of lightweight automobiles with high expectations. Compared with the high-strength steels and aluminum alloys currently used in automobiles, under the same strength, the specific gravity of carbon fiber composites is lower than that of aluminum alloys, and is much lower than that of high-strength steels. In addition to the advantages of light weight, carbon fiber composite materials also have excellent properties such as high strength, high modulus, corrosion resistance, and high temperature resistance. It can be seen that the application of carbon fiber composite materials in the automotive industry has great potential.
虽说碳纤维复合材料在汽车上的应用前景广阔,但于当前其仍有一些问题尚待解决。如在传统的汽车覆盖件制造中,由于运用的材料主要为钢材,从而决定了覆盖件与其附件(例如锁扣)的连接方式之一便是焊接。而采用了纤维增强复合材料后,金属锁扣无法与碳纤维夹层板焊接连接,传统的连接方式已经无法适应新型应用的需求,从而有必要提出一种新的覆盖件与其附件的连接以及安装方式,以便于纤维增强复合材料在汽车工业中的进一步推广应用。Although carbon fiber composite materials have broad application prospects in automobiles, there are still some problems to be solved at present. For example, in the manufacture of traditional automobile cover parts, since the material used is mainly steel, one of the connection methods of the cover parts and its accessories (such as locks) is welding. After the use of fiber-reinforced composite materials, the metal lock can not be welded and connected to the carbon fiber sandwich panel, and the traditional connection method has been unable to meet the needs of new applications. Therefore, it is necessary to propose a new connection and installation method of the cover and its accessories. In order to facilitate the further promotion and application of fiber reinforced composite materials in the automobile industry.
发明内容SUMMARY OF THE INVENTION
为了克服传统焊接技术在纤维增强复合材料夹层板汽车覆盖件与其附件连接时不适用的缺点,本发明提供一种带锁扣的纤维增强复合材料夹层板结构,它可以在不采用焊接的情况下,使得锁扣仍能与纤维增强复合材料夹层板安装固定,并保证一定的连接强度,满足不同工况下的汽车覆盖件锁紧需求。In order to overcome the disadvantage that the traditional welding technology is not applicable when the fiber reinforced composite sandwich panel automobile cover is connected with its accessories, the present invention provides a fiber reinforced composite sandwich panel structure with a locking buckle, which can be used without welding. , so that the lock can still be installed and fixed with the fiber reinforced composite sandwich panel, and ensure a certain connection strength, so as to meet the locking requirements of automobile cover parts under different working conditions.
本发明解决其技术问题所采用的技术方案是:The technical scheme adopted by the present invention to solve its technical problems is:
一种带锁扣的纤维增强复合材料夹层板结构,包括由纤维增强复合材料制作的夹层板、预设在所述夹层板内的预埋件、设置在所述夹层板外且与所述预埋件可拆卸连接的锁扣底座以及安装在所述锁扣底座上的锁扣。A fiber reinforced composite sandwich panel structure with a lock, comprising a sandwich panel made of fiber reinforced composite material, a pre-embedded part preset in the sandwich panel, a sandwich panel arranged outside the sandwich panel and connected with the pre-fabricated component. The embedded part is detachably connected to a lock base and a lock installed on the lock base.
按上述技术方案,所述预埋件上设有多个螺孔,所述锁扣底座通过与所述螺孔相配置的螺栓固定安装在预埋件上。According to the above technical solution, the embedded part is provided with a plurality of screw holes, and the locking base is fixedly installed on the embedded part through bolts arranged with the screw holes.
按上述技术方案,所述夹层板包括夹芯层以及胶结在所述夹芯层上下两端的纤维层,所述预埋件设置在夹芯层内,所述锁扣底座与其中一个纤维层接触。According to the above technical solution, the sandwich panel includes a sandwich layer and a fiber layer glued on the upper and lower ends of the sandwich layer, the embedded parts are arranged in the sandwich layer, and the lock base is in contact with one of the fiber layers. .
按上述技术方案,所述纤维层由碳纤维增强材料和环氧树脂基体复合而成,所述夹芯层为泡沫塑料材质。According to the above technical solution, the fiber layer is made of carbon fiber reinforced material and epoxy resin matrix, and the sandwich layer is made of foamed plastic.
按上述技术方案,所述纤维层与预埋件和锁扣底座接触区域的厚度大于其它区域的厚度。According to the above technical solution, the thickness of the contact area of the fiber layer with the embedded part and the lock base is greater than that of other areas.
按上述技术方案,所述纤维层由多层纤维铺层构成,所述纤维层与预埋件和锁扣底座接触区域的纤维铺层的层数大于其它区域的纤维铺层的层数。According to the above technical solution, the fiber layer is composed of multiple layers of fiber layers, and the number of layers of fiber layers in the contact area between the fiber layer and the embedded part and the locking base is greater than that in other areas.
按上述技术方案,所述预埋件上下两端面分别与纤维层的内表面贴合,所述预埋件与纤维层之间设置有胶结层。According to the above technical solution, the upper and lower end surfaces of the embedded part are respectively attached to the inner surface of the fiber layer, and a bonding layer is provided between the embedded part and the fiber layer.
按上述技术方案,所述预埋件与位于锁扣底座一端的纤维层的接触面积小于与另一个纤维层的接触面积。According to the above technical solution, the contact area of the embedded part with the fiber layer at one end of the lock base is smaller than the contact area with the other fiber layer.
按上述技术方案,所述锁扣为金属锁扣。According to the above technical solution, the lock is a metal lock.
本发明产生的有益效果是:本发明通过在纤维增强复合材料夹层板内预设预埋件,使预埋件与夹层板固定成一体,然后将带有锁扣的锁扣底座固定安装在预埋件上,从而完成锁扣与纤维增强复合材料夹层板的固定连接,当锁扣受到附加载荷时,其能通过各部件之间的连接关系,将受到的附加载荷传递给整个夹层板,保证锁扣在使用时的可靠性。The beneficial effects of the present invention are as follows: the present invention pre-embeds the embedded parts in the fiber-reinforced composite sandwich board, so that the embedded parts and the sandwich board are fixed into one, and then the lock base with the lock is fixedly installed on the pre-embedded board. When the lock is subjected to additional load, it can transmit the additional load to the entire sandwich panel through the connection between the various components to ensure The reliability of the lock in use.
本发明通过预设预埋件,实现在两个由不同材料构成的部件之间的安装连接关系,从而使得在使用了新型复合材料替代传统钢材制造诸如汽车覆盖件这类闭合件的情况下,仍能满足闭合件与其附件间的安装要求,尤其解决了由纤维增强复合材料制造的汽车覆盖件的锁紧问题;而且本发明中预埋件与夹层板一体成型,可以减少后续加工工序,而且锁扣与预埋件为可拆卸连接,非常方便在夹层板成型后锁扣的安装与更换。本发明为纤维增强复合材料夹层板在汽车覆盖件上的应用起到促进作用,进而助力汽车工业提高轻量化设计水平,以实现节能减排。The present invention realizes the installation and connection relationship between two parts made of different materials by presetting the embedded parts, so that when a new type of composite material is used to replace traditional steel to manufacture a closure such as an automobile cover, It can still meet the installation requirements between the closure and its accessories, and especially solve the locking problem of the automobile cover made of fiber-reinforced composite materials; and in the present invention, the embedded part and the sandwich panel are integrally formed, which can reduce the subsequent processing steps, and The lock and the embedded part are detachably connected, which is very convenient for the installation and replacement of the lock after the sandwich panel is formed. The invention plays a role in promoting the application of the fiber-reinforced composite material sandwich board on the automobile cover, thereby helping the automobile industry to improve the level of lightweight design, so as to realize energy saving and emission reduction.
附图说明Description of drawings
下面将结合附图及实施例对本发明作进一步说明,附图中:The present invention will be further described below in conjunction with the accompanying drawings and embodiments, in which:
图1为本发明实施例的俯视图。FIG. 1 is a top view of an embodiment of the present invention.
图2为沿图1中A-A线的剖视图。FIG. 2 is a cross-sectional view taken along line A-A in FIG. 1 .
图3为本发明实施例的侧视图。FIG. 3 is a side view of an embodiment of the present invention.
图中:1-锁扣,2-锁扣底座,3-螺栓,4-夹层板、4.1-上纤维层,4.2-夹芯层,4.3-下纤维层,5-预埋件,5.1-预埋件上端,5.2-预埋件下端,5.3-螺孔。In the picture: 1-lock, 2-lock base, 3-bolt, 4-sandwich board, 4.1-upper fiber layer, 4.2-sandwich layer, 4.3-lower fiber layer, 5-embedded part, 5.1-preset The upper end of the embedded part, 5.2- the lower end of the embedded part, 5.3- the screw hole.
具体实施方式Detailed ways
为了使本发明的目的、技术方案及优点更加清楚明白,以下结合附图及实施例,对本发明进行进一步详细说明。应当理解,此处所描述的具体实施例仅用以解释本发明,并不用于限定本发明。In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
如图1-图3所示,一种带锁扣的纤维增强复合材料夹层板结构,包括由纤维增强复合材料制作的夹层板4、预设在夹层板4内的预埋件5、设置在夹层板4外且与预埋件5可拆卸连接的锁扣底座2以及安装在锁扣底座2上的锁扣1,其中,锁扣为金属锁扣。As shown in Fig. 1-Fig. 3, a fiber reinforced composite sandwich panel structure with locking buckle includes a
在本发明的优选实施例中,如图1、图2所示,预埋件5上设有多个螺孔5.3,锁扣底座2通过与螺孔相配置的螺栓3固定安装在预埋件5上。这样一方面方便了在夹层板成型后将其与锁扣底座安装在一起,另一方面通过螺纹连接使得锁扣与夹层板之间的连接更可靠,相对于只采用粘接来说这是更理想的连接方式。本实施例中螺孔的数量为2个,对称布置在锁扣的两侧。锁扣底座与预埋件通过螺栓连接,以方便在夹层板成型后锁扣的安装与更换。In a preferred embodiment of the present invention, as shown in Figures 1 and 2, the embedded
在本发明的优选实施例中,如图1-图3所示,夹层板4包括夹芯层4.2以及胶结在夹芯层上下两端的纤维层(上纤维层4.1和下纤维层4.3),预埋件5设置在夹芯层内,锁扣底座2与其中一个纤维层(上纤维层4.1)接触。其中,纤维层由碳纤维增强材料和环氧树脂基体复合而成,具体为采用碳纤维作为增强材料,环氧树脂作为基体材料,通过两者的固化形成层合板结构,夹芯层所采用的材料主要为泡沫塑料。在纤维层与夹芯层之间设有一层胶结层,把夹芯层与上纤维层和下纤维层胶结在一起,从而使得夹层板的性能得到进一步提升。In a preferred embodiment of the present invention, as shown in Figures 1-3, the
在本发明的优选实施例中,如图2所示,为了满足夹层板不同区域对于力学性能的需求,在纤维层与预埋件接触面附近区域、纤维层与锁扣底座接触面附近区域的纤维层予以补强,即纤维层与预埋件和锁扣底座接触区域的厚度大于其它区域的厚度,通过这样的结构设计,可以使得夹层板的材料分布与其受力情况相适应,从而在没有过多增加材料及成本的情况下,获得更优的力学性能。纤维层不等厚的方式为:纤维层由多层纤维铺层构成,纤维层与预埋件和锁扣底座接触区域的纤维铺层的层数大于其它区域的纤维铺层的层数。In a preferred embodiment of the present invention, as shown in Figure 2, in order to meet the mechanical properties requirements of different areas of the sandwich panel, the area near the contact surface between the fiber layer and the embedded part and the area near the contact surface between the fiber layer and the lock base The fiber layer is reinforced, that is, the thickness of the contact area between the fiber layer and the embedded part and the lock base is greater than that of other areas. Through such a structural design, the material distribution of the sandwich panel can be adapted to its stress conditions, so that there is no When the material and cost are increased too much, better mechanical properties can be obtained. The unequal thickness of the fiber layer is as follows: the fiber layer is composed of multiple layers of fiber layers, and the number of layers of fiber layers in the contact area between the fiber layer and the embedded part and the lock base is greater than that in other areas.
在本发明的优选实施例中,如图2所示,预埋件上下两端面(预埋件上端5.1和预埋件下端5.2)分别与纤维层的内表面贴合,在预埋件的布置区域不引起夹层板表面的突变,这样一方面可保证夹层板表面的造型要求,另一方面也可避免在突变区域造成应力集中。预埋件与纤维层之间设置有胶结层,并根据受力情况,上下胶结层区域的面积设计为不等大,预埋件与上纤维层的接触面积小于与下纤维层的接触面积,预埋件在夹层板的厚度方向上为非对称结构,这样的材料布局既考虑了整个结构的受力情况,同时也兼顾了轻量化的设计要求。由于锁扣在其使用期主要受到拉力与压力作用,当其受拉时,易引起夹层板的上纤维层及下纤维层剥离,从而将预埋件的下端面设计得更大,以免在锁扣受拉时引起夹层板纤维层的剥离。In a preferred embodiment of the present invention, as shown in Figure 2, the upper and lower end surfaces of the embedded part (the upper end 5.1 of the embedded part and the lower end 5.2 of the embedded part) are respectively attached to the inner surface of the fiber layer. The area does not cause abrupt changes on the surface of the sandwich panel, so on the one hand, it can ensure the modeling requirements of the surface of the sandwich panel, and on the other hand, it can also avoid stress concentration in the abrupt change area. Between the embedded part and the fiber layer, there is a cemented layer, and according to the stress, the area of the upper and lower cemented layers is designed to be unequal, and the contact area between the embedded part and the upper fiber layer is smaller than the contact area with the lower fiber layer. The embedded parts have an asymmetric structure in the thickness direction of the sandwich panel. This material layout not only considers the stress of the entire structure, but also takes into account the lightweight design requirements. Since the lock is mainly subjected to tension and pressure during its use period, when it is pulled, it is easy to cause the upper and lower fiber layers of the sandwich panel to peel off, so the lower end face of the embedded part is designed to be larger. When the buckle is in tension, it causes the peeling of the fiber layer of the sandwich panel.
应当理解的是,对本领域普通技术人员来说,可以根据上述说明加以改进或变换,而所有这些改进和变换都应属于本发明所附权利要求的保护范围。It should be understood that, for those skilled in the art, improvements or changes can be made according to the above description, and all these improvements and changes should fall within the protection scope of the appended claims of the present invention.
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