KR102727122B1 - Roof-lack and Car comprising the same - Google Patents

Abstract

The present application provides a roof rack mounted on a car roof panel, comprising: a main body including a rail extending in the longitudinal direction and forming a main body; and support portions provided at each of the longitudinal ends of the rail; a hollow profile extending in the longitudinal direction of the rail and integrally formed inside the rail; caps mounted at both ends of the hollow profile and arranged inside the main body; and a pair of cover portions mounted on both sides of the support portions.

Description

Roof rack and car comprising the same {Roof-lack and Car comprising the same}

The present application relates to a roof rack and a vehicle including the same.

In general, a roof rack mounted on a car roof panel is symmetrically mounted on both sides of the upper part of the roof panel, and is provided to load items on the upper part of the car body. Regarding such a roof rack, prior patent publication No. 10-2011-0019680 (Title of the invention: Side bar assembly of a vehicle roof carrier) has been previously applied for.

Referring to Fig. 1, to explain in detail, the roof rack (10) extends along the longitudinal direction and is fixedly installed via a fastening member (not shown) while the rail (11) forming the main body is placed on the vehicle roof (1).

The conventional roof rack (10) is composed of a rail (11), a support member (12) provided at both ends of the rail (11), a cover (13), and a pad (14). The conventional roof rack (10) is formed with a uniform cross-sectional shape by extrusion molding using aluminum material, and the support member (12) made of synthetic resin material is injection molded due to the characteristic of the shape formed as a three-dimensional curved surface.

Referring to Fig. 2, to explain more specifically, the existing roof rack is formed by separately molding the rail (11), the support (12), the cover (13), and the pad (14) and then assembling them by fitting them together. However, this method of molding them separately and then assembling them has problems such as one of the causes of increased manufacturing costs and increased assembly work. In addition, the aluminum rail has the disadvantage of being easily deformed by external impact due to its low strength.

Furthermore, the cover (13) of the existing roof rack (10) is composed of an integrated cover that covers the upper side and both sides of the support (12) at the same time. However, this integrated cover frequently causes a lifting phenomenon between the cover (13) and the support (12), which may result in a mounting defect, and thus generally has a problem in that the mounting convenience is low.

The present application has been made to solve the above-described problems, and the purpose of the present application is to provide a roof rack in which a rail, which has been formed by a separate assembly method, and a support portion provided at each end of the rail are formed into a single body through injection molding, and a hollow profile having a cap mounted at at least one of the two end portions is integrally formed inside the rail to reinforce strength, and in which a pair of cover portions are provided to be mounted on each side of the support portion, thereby covering a vulnerable portion of the support portion's appearance while improving the convenience of mounting the cover portions.

According to one aspect of the present application, a roof rack mounted on a car roof panel is provided, comprising: a main body including a rail extending in the longitudinal direction and forming a main body; and support portions provided at each of both end portions of the rail; a hollow profile extending in the longitudinal direction of the rail and integrally formed inside the rail; a cap mounted on at least one of the two end portions of the hollow profile; and a pair of cover portions mounted on both sides of the support portions.

A roof rack related to one embodiment of the present application is formed by injection molding a rail and a support provided at both ends of the rail into a single body, and integrally forming a hollow profile with a cap mounted at at least one end of both ends therein, thereby enhancing strength as well as reducing weight and cost.

In addition, the roof rack related to one embodiment of the present application has a pair of cover parts mounted on both sides of the support part, thereby covering the vulnerable external appearance of the support part and at the same time improving the convenience of mounting the cover parts.

Figure 1 is a drawing showing a roof rack mounted on a vehicle roof panel.
Figure 2 is a configuration diagram of a conventional roof rack.
Figure 3 is a configuration diagram of an exemplary loop rack according to the present application.
Figure 4 is a detailed exploded view of an exemplary loop rack according to the present application.
Figure 5 shows the cut surface of the rail when cut with the AA cut surface of the existing roof rack and the roof rack.
FIGS. 6 to 8 are cut sections of a main body when an exemplary loop rack according to the present application is cut along the AA cut section shown in FIG. 5.

The present application relates to a roof rack. The roof rack is mounted on a vehicle roof panel, and specifically, may be mounted symmetrically on both outer surfaces of the vehicle roof panel.

Hereinafter, with reference to the attached drawings, embodiments of the present application will be described in detail so that those with ordinary skill in the art to which the present application pertains can easily implement the present application. However, the present application may be implemented in various different forms and is not limited to the embodiments described herein. In addition, in order to clearly explain the present invention in the drawings, parts that are not related to the description are omitted, and similar parts are assigned similar drawing reference numerals throughout the specification.

Fig. 3 is a configuration diagram of an exemplary roof rack according to the present application. Fig. 4 is a detailed exploded view of an exemplary roof rack according to the present application.

Referring to FIGS. 3 and 4, the roof rack according to the present application includes a main body (100), a hollow profile (200), a cap (400), and a pair of cover parts (300).

The above body (100) extends in the longitudinal direction and includes a rail forming the main body, and a support provided at each of the longitudinal ends of the rail. For example, the support may be integrally formed at each of the longitudinal ends of the rail through injection molding. Specifically, the body (100) may be simultaneously molded with the hollow profile (200) through insert injection. Since the roof rack according to the present application is molded integrally with the body (100) and the hollow profile (200) through insert injection, the number of processes (assembly/production) is simplified, and thus the process cost can be reduced. In addition, the roof rack manufactured through insert injection has a high degree of design freedom and can present a luxurious appearance.

The hollow profile (200) extends along the longitudinal direction of the rail and is integrally formed inside the rail. In other words, the rail has a hollow portion extending along the longitudinal direction inside, and the inner surface of the rail forming the hollow portion can contact the entire area of the outer surface of the hollow profile (200). Since the entire area of the outer surface of the hollow profile (200) contacts the inner surface of the rail, the strength of the main body (100) can be improved. The hollow profile (200) may be a rod shape having a hollow portion (inner space) along the longitudinal direction. In addition, the length of the hollow profile (200) may be the same as or less than the length of the rail. As described above, since the hollow profile (200) is integrally formed inside the rail through insert injection, the hollow profile (200) in the present application may be an insert member.

Meanwhile, the hollow profile (200) can be manufactured by injection molding, and can be manufactured by, for example, extrusion or drawing methods. The thickness of the hollow profile (200) is not particularly limited and can be variably adjusted according to the process conditions of injection molding.

The cap (400) is mounted on at least one of the two end portions of the hollow profile (200) and can be placed inside the main body (100). For example, the cap (400) can be mounted on both end portions of the hollow profile (200) so that the internal space of the hollow profile (200) is sealed. The hollow profile (200) can be insert injection molded with the cap (400) mounted on both end portions. Since the cap (400) is insert injection molded with the two end portions of the hollow profile (200) mounted on both end portions, it can be placed inside the main body (100) and can not be seen from the exterior of the roof rack. The cap (400) seals the internal space of the hollow profile (200), thereby blocking the injection molded material of the rail from flowing into the internal space of the hollow profile (200) during insert injection molding. In addition, the size of the cap (400) may be larger than the diameter of the hollow profile (200). Here, the size of the cap (400) means the length of the longest dimension. As the size of the cap (400) is formed to be larger than the diameter of the hollow profile (200), the bonding force between the main body (100) and the hollow profile (200) is improved, and thus, the hollow profile (200) can be prevented from being separated from the main body (100). In addition, the cap (400) can contribute to improving the fixation of the hollow profile (200) in an injection device (e.g., an injection mold) during insert injection.

In addition, the above-mentioned pair of cover parts (300) are mounted on both sides of the support part. The cover parts (300) serve to cover the vulnerable parts of the exterior of the roof rack. Unlike the integral cover shape cover mounted on the existing roof rack, the cover part (300) according to the present application has the advantage of improved mounting convenience since it is configured as a detachable type.

In one example, the hollow profile (200) may have at least one through hole formed on a surface facing the roof panel side of the automobile. The through hole may be insertion-connected with a fixing member (fixing pin) provided in an insert injection device. The hollow profile (200) may be aligned and fixed in a molding position in the injection device by the through hole. As the through hole is insertion-connected with the fixing member provided in the insert injection device, the hollow profile (200) may be prevented from being deviated from the initially set molding position due to the flow of the injection material, thereby minimizing the insert defect rate. The hollow profile (200) may have, for example, two or more through holes formed on a surface facing the roof panel side of the automobile so as to be symmetrical at both end portions of the hollow profile (200).

In addition, the roof rack according to the present application may additionally include a plug (500) coupled to the through hole. The through hole contributes to fixing the position of the hollow profile (200) during the injection molding process, but may correspond to a vulnerable part in the appearance of the final product. The plug (500) serves to cover the vulnerable part in the appearance of the roof rack by being coupled to the through hole. The plug (500) coupled to the through hole may be positioned to face the roof panel side of the vehicle, and accordingly, the problem of the vulnerable part in the appearance of the roof rack due to the plug (500) does not occur.

Fig. 5 shows the cut surface of the rail when cutting along the A-A cut surface of the existing roof rack and the roof rack. Figs. 6 to 8 show the cut surface of the main body when cutting along the A-A cut surface of the exemplary roof rack according to the present application as shown in Fig. 5.

Unlike conventional roof racks, the hollow profile (200) can be implemented in various cross-sectional shapes of the roof rack by utilizing an extrusion method or a drawing method. For example, the cross-section of the hollow profile (200) can be a circular cross-section (see FIG. 6) or a lattice-shaped cross-section (see FIGS. 7 and 8).

In one example, the hollow profile (200) may include at least one rib so that the internal space is divided into at least two spaces along the longitudinal direction. Depending on the number of ribs, the hollow profile (200) may have the internal space divided into two or more, three or more, or four or more spaces. In this case, the cross-section of the hollow profile (200) may be in a lattice shape.

Referring to FIGS. 7 and 8, the roof rack according to the present application may have a straight rib cross section when there is one rib (see FIG. 7), and may have a cross rib cross section when two ribs are formed intersecting (see FIG. 8).

Specifically, the rib is formed to extend along the longitudinal direction of the hollow profile (200) and may be connected to the inner surface across the inner space of the hollow profile (200) along the width or height direction of the hollow profile (200). As the rib is connected to the inner surface across the inner space of the hollow profile (200), the strength of the hollow profile (200) may be improved. The rib may be integrally formed within the hollow profile (200) through an extrusion or drawing method.

In one example, the hollow profile (200) may include a first rib that extends along the longitudinal direction of the hollow profile (200) and is connected to the inner surface across the internal space along the width direction; and a second rib that extends along the longitudinal direction of the hollow profile (200) and is connected to the inner surface across the internal space along the height direction.

The first rib and the second rib may be connected to the inner surface of the hollow profile (200) while being arranged at right angles to each other. In the present application, the term right angle may be used to mean not only the mathematical concept of 90°, but also 60 to 120°. The first rib and the second rib may be cross ribs formed integrally. The inner space of the hollow profile (200) including the first and second ribs may be divided into four spaces.

In one example, a pad (700) provided between the support member and the car roof panel may be additionally included. The pad (700) may prevent one side of the support member facing the car roof panel from directly contacting the surface of the car roof panel, thereby minimizing damage to the surface of the car roof panel, and may suppress noise caused by aerodynamic forces and assembly gaps. The support member and the pad (700) may be fastened through various fastening members or assembled in a fitting manner.

In another example, the rail may have an opening in which some areas are open, a hollow profile (200) is exposed to the outside through the opening, and a finishing member (600) may be mounted on the opening to cover the hollow profile (200). For example, the finishing member (600) may have a different color from the main body (100) or may be equipped with an LED to contribute to the design sophistication of the roof rack. Specifically, the finishing member (600) may be a garnish.

In one specific example, the main body (100) and the hollow profile (200) are formed of the same material, and the material may be a resin composite. Since the main body (100) and the hollow profile (200) are formed of a resin composite, the roof rack according to the present application has the advantage of being lighter than a conventional roof rack made of aluminum.

Specifically, the resin composite may include a thermoplastic resin and a fiber. The thermoplastic resin is not particularly limited as long as it is a resin applicable to injection molding, and may include, for example, at least one selected from the group consisting of PE (Polyethylene), PA (Polyamide), PC (Polycarbonate), PET (Polyethylene terephthalate), PBT (Polybutylene terephthalate), ABS (Acrylonitrile-butadiene-styrene) resin, and mixed resins thereof, and preferably may be a PA resin, and more preferably may be a PA6 (nylon 6) resin.

The above fiber is not particularly limited as long as it is a fiber that can implement excellent strength when used together with a thermoplastic resin, and may include, for example, one or more selected from the group consisting of glass fibers, carbon fibers, synthetic fibers, and natural fibers, and preferably may be continuous glass fibers.

In one example, the resin composite can comprise 5 to 80 wt % of the fibers. Specifically, the resin composite can comprise 10 to 75 wt %, 15 to 70 wt %, 20 to 65 wt %, 25 to 60 wt %, 30 to 55 wt %, 35 to 50 wt %, 10 to 70 wt %, 15 to 65 wt %, 20 to 60 wt %, 25 to 55 wt %, 15 to 75 wt %, 20 to 75 wt %, 20 to 70 wt %, 20 to 75 wt %, 25 to 80 wt %, 30 to 70 wt %, 35 to 70 wt % of the fibers.

In addition, the resin composite may additionally include glass bubbles to reduce the weight of the main body (100) and the hollow profile (200). For example, the resin composite may additionally include 5 to 40 wt%, 10 to 35 wt%, or 15 to 30 wt% of the glass bubbles.

According to the present application, in order to implement the desired properties for each component constituting the roof rack, the types of thermoplastic resin and fiber, and the content of the fiber can be appropriately selected within the range described above.

Specifically, the body (100) includes a first resin composite, and the first resin composite may include PA resin and glass fiber, and the first resin composite may include 10 to 75 wt%, 15 to 70 wt%, 20 to 65 wt%, 25 to 60 wt%, 30 to 55 wt%, 35 to 50 wt%, 10 to 70 wt%, 15 to 65 wt%, 20 to 60 wt%, 25 to 55 wt%, 15 to 75 wt%, 20 to 75 wt%, 20 to 70 wt%, 20 to 75 wt%, 25 to 80 wt%, 30 to 70 wt%, 35 to 70 wt% of glass fiber.

In addition, the hollow profile (200) may include a second resin composite material including PA6 resin and glass fibers, and the second resin composite material may be the same as or different from the first resin composite material. For example, the second resin composite material may include 10 to 75 wt%, 15 to 70 wt%, 20 to 65 wt%, 25 to 60 wt%, 30 to 55 wt%, 35 to 50 wt%, 10 to 70 wt%, 15 to 65 wt%, 20 to 60 wt%, 25 to 55 wt%, 15 to 75 wt%, 20 to 75 wt%, 20 to 70 wt%, 20 to 75 wt%, 25 to 80 wt%, 30 to 70 wt%, 35 to 70 wt% of glass fibers.

In particular, in the case of the hollow profile (200), it is important to appropriately select the type and content of the fiber depending on the process conditions, for example, extrusion or drawing method. For example, when manufactured by an extrusion method, the second resin composite may include glass fibers in the form of short fibers or long fibers. The second resin composite used in the extrusion process may contain 10 to 75 wt%, 15 to 70 wt%, 20 to 65 wt%, 25 to 60 wt%, 30 to 55 wt%, 35 to 50 wt%, 10 to 70 wt%, 15 to 65 wt%, 20 to 60 wt%, 25 to 55 wt%, 15 to 75 wt%, 20 to 75 wt%, 20 to 70 wt%, 20 to 75 wt%, 25 to 80 wt%, 30 to 70 wt%, 35 to 70 wt% of glass fibers. In addition, when manufactured by the pultrusion process, the second resin composite contains glass fibers in the form of continuous fibers, and the second resin composite may contain glass fibers in an amount the same as or different from that of the extrusion process. For example, the second resin composite used in the pultrusion process can include 10 to 75 wt%, 15 to 70 wt%, 20 to 65 wt%, 25 to 60 wt%, 30 to 55 wt%, 35 to 50 wt%, 10 to 70 wt%, 15 to 65 wt%, 20 to 60 wt%, 25 to 55 wt%, 15 to 75 wt%, 20 to 75 wt%, 20 to 70 wt%, 20 to 75 wt%, 25 to 80 wt%, 30 to 70 wt%, 35 to 70 wt% of the glass fiber.

In another example, the cap (400) may include a third resin composite material comprising PA resin and glass fibers, and the third resin composite material may be the same as or different from the first and second resin composite materials described above. The third resin composite material may include 10 to 75 wt%, 15 to 70 wt%, 20 to 65 wt%, 25 to 60 wt%, 30 to 55 wt%, 35 to 50 wt%, 10 to 70 wt%, 15 to 65 wt%, 20 to 60 wt%, 25 to 55 wt%, 15 to 75 wt%, 20 to 75 wt%, 20 to 70 wt%, 20 to 75 wt%, 25 to 80 wt%, 30 to 70 wt%, 35 to 70 wt% of glass fibers.

The present application also relates to a vehicle. The vehicle includes a roof rack mounted on a roof panel. A detailed description of the roof rack overlaps with the above-mentioned content, and thus will be omitted herein.

As described above, although the present application has been described by limited embodiments and drawings, the present application is not limited thereto, and various modifications and variations may be possible.

100: Body
200: Hollow profile
300: Cover part
400: Cap

Claims (14)

For roof racks mounted on the car roof panel,
A main body including a rail extending in the longitudinal direction and forming a main body, and support members provided at each of the longitudinal ends of the rail;
A hollow profile extending along the longitudinal direction of the rail, formed integrally inside the rail, and having at least one through hole formed on a surface facing the roof panel of the automobile;
A cap mounted on both ends of the above hollow profile and placed inside the main body; and
A pair of cover parts mounted on both sides of the above support part; including:
The above hollow profile is integrally formed inside the rail through insert injection,
A roof rack in which, when the above insert is injected, a fixing member is inserted into the through hole to align the position of the hollow profile with respect to the rail. delete delete In the first aspect, a roof rack having a hollow profile including at least one rib such that the internal space is divided into at least two spaces along the longitudinal direction. In the fourth paragraph, the rib is formed to extend along the longitudinal direction of the hollow profile and is connected to the inner surface of the hollow profile across the inner space of the hollow profile along the width or height direction of the hollow profile. In the first paragraph, the hollow profile is formed by extending along the longitudinal direction of the hollow profile and connecting the first rib to the inner surface across the internal space along the width direction; and
A roof rack including a second rib formed to extend along the longitudinal direction of the hollow profile and connected to the inner surface across the inner space along the height direction. A roof rack further comprising a pad provided between the support member and the vehicle in accordance with claim 1. A roof rack further comprising a cover portion provided to cover the support portion in accordance with claim 1. In the first paragraph, the main body and the hollow profile are formed of the same material,
The above material is a roof rack made of resin composite. In claim 9, the resin composite material is a roof rack comprising a thermoplastic resin and fibers. A roof rack in claim 10, wherein the thermoplastic resin comprises at least one selected from the group consisting of polyethylene (PE), polyamide (PA), polycarbonate (PC), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), acrylonitrile-butadiene-styrene (ABS) resin, and mixed resins thereof. In claim 10, a roof rack comprising at least one fiber selected from the group consisting of glass fiber, carbon fiber, synthetic fiber, and natural fiber. In the 10th paragraph, the roof rack comprises 5 to 80 wt% of fibers in the resin composite. A motor vehicle comprising a roof rack according to paragraph 1.