阅读说明：本技术 一种轻量化轿车车顶 (Lightweight car roof ) 是由 熊新 石小龙 郑竹安 翟豪瑞 孙婷婷 于 2020-08-05 设计创作，主要内容包括：本发明公开了一种轻量化轿车车顶,包括车顶板,车顶板内部开设有空腔,空腔包括U形腔道及横向腔道,U形腔道两端分别与车顶板一端的两侧相连,横向腔道横跨并穿过U形腔道的两侧,横向腔道与U形腔道的连接处设置有支撑块,车板顶位于U形腔道和横向腔道之间的位置开设有天窗孔,车顶板位于天窗孔处设置有凹台,本发明的轿车车顶结构简单,在内部开设有U形腔道及横向腔道,多大降低了车顶的重量,使车顶轻量化；车顶板1的厚度为3mm,车顶板1的密度为1.56g/cm3,满足轻量化的条件还保证了车顶的强度,从而大大提高了安全性；在U形腔道及横向腔道内设置支撑块,以提高U形腔道及横向腔道处的支撑强度。(The invention discloses a light car roof, which comprises a car roof plate, wherein a cavity is formed in the car roof plate, the cavity comprises a U-shaped cavity channel and a transverse cavity channel, two ends of the U-shaped cavity channel are respectively connected with two sides of one end of the car roof plate, the transverse cavity channel stretches across and penetrates through two sides of the U-shaped cavity channel, a supporting block is arranged at the joint of the transverse cavity channel and the U-shaped cavity channel, a skylight hole is formed in the position, between the U-shaped cavity channel and the transverse cavity channel, of the car roof plate, and a concave platform is arranged at the position, at which the car roof plate is located, of the skylight hole; the thickness of the roof plate 1 is 3mm, the density of the roof plate 1 is 1.56g/cm3, the lightweight condition is met, and the strength of the roof is also ensured, so that the safety is greatly improved; supporting blocks are arranged in the U-shaped cavity channel and the transverse cavity channel to improve the supporting strength of the U-shaped cavity channel and the transverse cavity channel.)

1. A lightweight car roof, its characterized in that: the automobile roof plate is characterized by comprising an automobile roof plate (1), a cavity is formed in the automobile roof plate (1), the cavity comprises a U-shaped cavity channel (2) and a transverse cavity channel (3), two ends of the U-shaped cavity channel (2) are respectively connected with two sides of one end of the automobile roof plate (1), the transverse cavity channel (3) stretches across and penetrates through two sides of the U-shaped cavity channel (2), a supporting block (4) is arranged at the joint of the transverse cavity channel (3) and the U-shaped cavity channel (2), a skylight hole (5) is formed in the position, located between the U-shaped cavity channel (2) and the transverse cavity channel (3), of the automobile roof plate (1), and a concave platform (6) is arranged at the position, located on the skylight hole (5), of the automobile roof plate (.

2. The lightweight saloon car roof of claim 1, wherein: the thickness of roof board (1) is 3 mm.

3. The lightweight saloon car roof of claim 1, wherein: the density of the roof panel (1) is 1.56g/cm 3.

4. The lightweight saloon car roof of claim 1, wherein: roof board (1) includes flat board (11), preceding arc board (12) and pterygoid lamina (13), dull and stereotyped (11) both sides are provided with pterygoid lamina (13) respectively, it is excessive through the cambered surface between dull and stereotyped (11) both sides and pterygoid lamina (13), the one end of dull and stereotyped (11) and pterygoid lamina (13) all links to each other with preceding arc board (12).

5. The lightweight saloon car roof of claim 1, wherein: the width and the height of the U-shaped cavity (2) and the transverse cavity (3) are consistent, and two sides of the U-shaped cavity (2) are communicated with the transverse cavity (3) respectively.

6. The lightweight saloon car roof of claim 1, wherein: the supporting block (4) comprises a supporting block main body (41), an upper end plate (42) and a lower end plate (43), the upper end plate (42) is arranged at the top end of the supporting block main body (41), and the lower end plate (43) is arranged at the bottom end of the supporting block (4).

Technical Field

The invention relates to the technical field of car roofs, in particular to a light car roof.

Background

Along with the rapid development of the automobile industry, the automobile safety receives great attention, the design optimization of the automobile roof improves the compressive strength of the roof, the harm to passengers caused by deformation and extrusion of the roof when an accident happens is reduced to the maximum extent, and the passive safety of the automobile is started, so that an improved technology is urgently needed to solve the problem existing in the prior art.

Disclosure of Invention

The invention aims to provide a light car roof, which is internally provided with a U-shaped cavity and a transverse cavity, so that the weight of the car roof is greatly reduced, and the car roof is light; the thickness of the roof plate 1 is 3mm, the density of the roof plate 1 is 1.56g/cm3, the lightweight condition is met, and the strength of the roof is also ensured, so that the safety is greatly improved; supporting blocks are arranged in the U-shaped cavity channel and the transverse cavity channel to improve the supporting strength of the U-shaped cavity channel and the transverse cavity channel and solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the light car roof comprises a roof plate, wherein a cavity is formed in the roof plate and comprises a U-shaped cavity and a transverse cavity, two ends of the U-shaped cavity are connected with two sides of one end of the roof plate respectively, the transverse cavity stretches across and penetrates through two sides of the U-shaped cavity, a supporting block is arranged at the joint of the transverse cavity and the U-shaped cavity, a skylight hole is formed in the position, between the U-shaped cavity and the transverse cavity, of the roof plate, and a concave table is arranged at the position, located at the skylight hole, of the roof plate.

Preferably, the roof plate has a thickness of 3 mm.

Preferably, the density of the roof panel is 1.56g/cm 3.

Preferably, the roof plate comprises a flat plate, a front arc plate and wing plates, the wing plates are arranged on two sides of the flat plate respectively, the two sides of the flat plate and the wing plates are in transition through arc surfaces, and one ends of the flat plate and the wing plates are connected with the front arc plate.

Preferably, the width and the height of the U-shaped cavity and the transverse cavity are consistent, and two sides of the U-shaped cavity are communicated with the transverse cavity respectively.

Preferably, the supporting block includes supporting block main part, upper end plate and lower end plate, the supporting block main part top is provided with the upper end plate, the supporting block bottom is provided with the lower end plate.

Compared with the prior art, the invention has the beneficial effects that:

(1) simple structure has seted up U-shaped chamber way and horizontal chamber way in inside, has greatly reduced the weight of roof, makes the roof lightweight.

(2) The thickness of roof board 1 is 3mm, and the density of roof board 1 is 1.56g/cm3, satisfies the condition of lightweight and has still guaranteed the intensity of roof to the security has improved greatly.

(3) Supporting blocks are arranged in the U-shaped cavity channel and the transverse cavity channel to improve the supporting strength of the U-shaped cavity channel and the transverse cavity channel.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the structure of the roof panel.

FIG. 3 is a schematic view of the support block structure.

In the figure: the roof plate comprises a roof plate 1, a U-shaped cavity 2, a transverse cavity 3, a support block 4, a skylight hole 5, a concave platform 6, a flat plate 11, a front arc plate 12, a wing plate 13, a support block body 41, an upper end plate 42 and a lower end plate 43.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: the light car roof comprises a car roof plate 1, a cavity is formed in the car roof plate 1, the thickness of the car roof plate 1 is 3mm, the density of the car roof plate 1 is 1.56g/cm3, the cavity comprises a U-shaped cavity channel 2 and a transverse cavity channel 3, two ends of the U-shaped cavity channel 2 are respectively connected with two sides of one end of the car roof plate 1, the transverse cavity channel 3 stretches across and penetrates through two sides of the U-shaped cavity channel 2, the width and the height of the U-shaped cavity channel 2 are identical to those of the transverse cavity channel 3, two sides of the U-shaped cavity channel 2 are respectively communicated with the transverse cavity channel 3, a supporting block 4 is arranged at the joint of the transverse cavity channel 3 and the U-shaped cavity channel 2, a sunroof hole 5 is formed in the position, between the U-shaped cavity channel 2 and the transverse cavity channel 3, and a concave table 6 is arranged at the position, located between the.

As shown in fig. 2, the roof panel 1 includes a flat plate 11, a front arc plate 12 and wing plates 13, the wing plates 13 are respectively disposed on two sides of the flat plate 11, the two sides of the flat plate 11 and the wing plates 13 are connected through arc surfaces, and one ends of the flat plate 11 and the wing plates 13 are connected to the front arc plate 12.

As shown in fig. 3, the support block 4 includes a support block main body 41, an upper end plate 42 and a lower end plate 43, the upper end plate 42 is disposed at the top end of the support block main body 41, and the lower end plate 43 is disposed at the bottom end of the support block 4.

Relevant parameters of roof strength:

1) thickness and density

The safety of automobiles, particularly the thickness of steel plates, has been the topic of intense discussion, and a general view at present is that the steel plates of American and German automobiles are thicker, while the steel plates of Japanese automobiles are relatively thinner. As for how thick or thin the steel plate is, most consumers do not have reliable basis and often judge according to subjective feelings of the consumers.

Although the overall rigidity of the vehicle body is greatly influenced by the structural design of the vehicle body and the materials used, the thickness of the steel plate is also a very important reference factor, generally speaking, the thicker the steel plate is, the stronger the resistance to impact force is, and in terms of materials, although the lightweight technology can improve the rigidity of the vehicle body, the pressure of cost and the life cycle of the materials make large-scale application of enterprises difficult, so that the method for judging the safety factor of the vehicle body through the thickness of the steel plate is still an effective method.

In this experiment, 2 types of thickness 3mm and 3.5mm and two types of density 1.56g/cm3 and 1.88g/cm3 were simulated as controls, and the optimum roof material was found.

2) Modulus of elasticity

During the elastic deformation phase of a material, the stress and strain are proportional, and the proportionality coefficient is called the elastic modulus, which generally expresses the ability of the material to resist deformation. The elastic modulus can be regarded as an index for measuring the difficulty of the material in elastic deformation, and the larger the value of the elastic modulus, the larger the stress for the material to generate certain elastic deformation, i.e. the higher the rigidity of the material, i.e. the smaller the elastic deformation generated under the action of certain stress. A larger value of the elastic modulus indicates a higher material stress, a stronger material immediately after the material is restorable, and a lower material deformation tendency. The smaller the elastic modulus value, the smaller the material stress, the weaker the rigidity, and the more easily the material is deformed.

3) Impact strength

Impact strength is an index for measuring the toughness of a material, and is generally defined as the energy absorbed per unit cross-sectional area when a test specimen is broken or fractured under an impact load, and the greater the impact strength is, the greater the impact load can be borne.