KR102213502B1 - Luggage lid and preparation method thereof - Google Patents

Abstract

The present invention relates to a luggage lid and a method of manufacturing the same. In the luggage lid of the present invention, a main plate and a rib are formed in one mold through a one-shot over-molding method, so that process costs can be reduced, and a loading capacity including ribs can be improved and weight reduction is possible.

Description

Luggage lid and preparation method thereof TECHNICAL FIELD

The present invention relates to a luggage lid and a method of manufacturing the same.

In general, a trunk of a vehicle is located at the rear of the vehicle body, and a luggage lid capable of separating an upper loading space and a lower loading space is installed to secure ancillary parts such as spare tires and additional loading space. The spare tire is accommodated in a predetermined space concave on the bottom surface of the loading space under the trunk, and is fastened and fixed by bolts so as not to move due to vibration of the vehicle body while the vehicle is running. In addition, in the loading space under the trunk, a jack pantograph for lifting a part of the vehicle body from the ground when the spare tire is replaced is also mounted.

On the other hand, the upper loading space based on the luggage lid is a space that can load various types of luggage, and must be able to withstand the load caused by heavy loads. Metal and plastic materials are used as materials used to manufacture such luggage leads. When the plastic material is used, an injection-molded product based on a polypropylene material, which is a thermoplastic material, is generally used. The luggage lid occupies a high weight in automobile parts because it must be able to withstand the load of a load loaded in the upper load space of the trunk. However, if the luggage lid is heavy, it leads to an increase in the weight of the vehicle, thereby lowering the fuel economy of the vehicle, and thus a need for weight reduction is required. In addition, when the user takes out items such as spare tires loaded in the load space under the trunk, the luggage lid must be opened or closed. Therefore, if the weight of the luggage lid is too high, it is inconvenient to use it, so it is lighter to secure user operation convenience. Is required.

However, in the case of injection products based on existing thermoplastic materials, additional weight reduction is difficult due to the limitations of materials, and it has a disadvantage that it must be fixed to the surrounding vehicle body. Accordingly, there is a need to develop products using higher performance materials. In addition, the process of insert overmolding used in the manufacture of luggage lids is complex, and an additional process in which preformed preforms must be inserted into the injection machine for final molding occurs, resulting in an increase in part production time and process cost. have.

Therefore, it is necessary to develop a material that can reduce the weight of the luggage lead by replacing the existing thermoplastic material such as polypropylene, and the development of a method that can replace the insert overmolding method when manufacturing the luggage lead using such material. I need this.

Korean Patent Registration No. 10-1509607

An object of the present invention is a main plate formed of a continuous fiber-reinforced thermoplastic resin composite; And it is to provide a luggage lid comprising a rib formed of a long fiber reinforced thermoplastic resin composite.

Another object of the present invention is to form a main plate by placing a continuous fiber-reinforced thermoplastic resin composite in a mold; And forming a rib by disposing a long fiber-reinforced thermoplastic resin composite in a state in which the main plate is located in the mold.

In order to achieve the above object, in one aspect, the present invention is a main plate formed of a continuous fiber-reinforced thermoplastic resin composite; And it provides a luggage lid comprising a rib formed of a long fiber reinforced thermoplastic resin composite.

In the present invention, it further includes a cover plate formed of a continuous fiber-reinforced thermoplastic resin composite.

In the present invention, the main plate is provided with a lower surface reinforcing groove or an upper surface reinforcing groove.

In the present invention, the ribs are located in the lower surface reinforcing groove, cross each other to form a plurality.

In the present invention, the upper surface reinforcing grooves are plural, and further includes a filling member positioned in each upper surface reinforcing groove.

In the present invention, the continuous fiber-reinforced thermoplastic resin composite contains 40 to 70% by weight of reinforcing fibers and 30 to 60% by weight of the thermoplastic resin.

In the present invention, the long fiber-reinforced thermoplastic resin composite includes 20 to 40% by weight of reinforcing fibers and 60 to 80% by weight of the thermoplastic resin.

In the present invention, the filling member is a foam made of one or more resins selected from the group consisting of polyvinyl chloride, polyurethane, acrylic, polystyrene, polyetheramide and styrene-acronitrile-copolymer.

In the present invention, the ratio between the depth of the lower surface reinforcing groove and the height of the rib is 1:0.5-1:1.2.

In the present invention, the ratio of the thickness of the main plate and the cover plate is 1:0.15-1:1.

In the present invention, the thickness of the main plate and the rib is 3.5mm: 2 ~ 4mm or 1 ~ 3mm: 2mm.

In the present invention, the reinforcing fiber is at least one selected from the group consisting of glass fiber, carbon fiber and aramid fiber, or the thermoplastic resin is polypropylene or polyamide.

In another aspect, the present invention comprises the steps of forming a main plate by placing a continuous fiber-reinforced thermoplastic resin composite in a mold; And forming a rib by disposing a long fiber-reinforced thermoplastic resin composite in a state in which the main plate is located in the mold.

In the present invention, forming a cover plate by placing the continuous fiber-reinforced thermoplastic resin composite in a mold; And coupling the formed cover plate to the ribbed main plate.

In the present invention, when the main plate is formed, a reinforcing groove or an upper reinforcing groove is provided.

In the present invention, the ribs are formed to be located in the lower surface reinforcing grooves, and are formed in plurality by crossing each other.

In the present invention, the upper surface reinforcing groove is formed in a plurality, further comprising the step of forming a filling member in the upper surface reinforcing groove.

In the present invention, compression molding of the main plate and injection molding of the ribs are formed in one mold.

The present invention relates to a luggage lid and a method of manufacturing the same. In the luggage lid of the present invention, a main plate and a rib are formed in one mold through a one-shot over-molding method, so that process costs can be reduced, and a loading capacity including ribs can be improved and weight reduction is possible.

1 is a schematic diagram showing an installation state of a luggage lid according to the present invention.
2 is an enlarged view showing the luggage lid of FIG. 1.
3 is a perspective view showing the bottom of FIG. 2.
4 is a cross-sectional view of FIG. 2 taken along line IV-IV.
5 is a perspective view showing a luggage lid according to another embodiment of the present invention.
6 is a perspective view showing the bottom of FIG. 5.
7 is an exploded perspective view of FIG. 5.
8 is a cross-sectional view of FIG. 5 taken along lines VIII-VIII.
9 shows a load test measurement method.
10 shows the impact test measurement method.

Hereinafter, the present invention will be described in detail with reference to the drawings so that those of ordinary skill in the art can easily implement it. However, the present invention may be implemented in various different forms, and is not limited to the embodiments or drawings described herein. The same reference numerals are assigned to similar parts throughout the specification.

In one aspect, the present invention is a main plate formed of a continuous fiber-reinforced thermoplastic resin composite; And it provides a luggage lid comprising a rib formed of a long fiber reinforced thermoplastic resin composite.

1 is a schematic diagram showing an installation state of a luggage lid according to the present invention. The luggage lead 100 according to an embodiment of the present invention shown in FIGS. 2 to 4 includes a main plate 110 formed of a continuous fiber-reinforced thermoplastic resin composite; And a rib 120 formed of a long fiber-reinforced thermoplastic resin composite. 2 shows a cross-sectional view of a luggage lid 100 according to an embodiment of the present invention. The luggage lid 100 includes a main plate 110 and a rib 120. The main plate 110 is provided with a gripping groove 112 so that when an object is taken out or put in the loading space under the trunk, the luggage lid 100 may be lifted or lowered while holding the gripping groove 112.

Referring to FIG. 3, a reinforcing groove 111 is formed when the main plate 110 constituting the luggage lead 100 is in a bottom direction, and a plurality of reinforcing grooves 111 are formed by crossing each other located in the lower surface reinforcing groove 111. The formed ribs 120 are provided. The rib may be formed by crossing a horizontal rib 121 formed along the X axis and a vertical rib 122 formed along the Y axis. Compared to a structure in which the reinforcing groove 111 and the rib 120 do not exist, the lower surface reinforcing groove 111 present in the main plate 110 of the luggage lead 100 and the rib 120 positioned therein are bent. Since it has an effect of reinforcing stiffness, the thickness of the main plate 110 can be made thin, so that weight reduction is possible.

The luggage lead 100 can further improve the structural rigidity of the luggage lead 100, and light weight, since a predetermined shape can be more firmly implemented by using a continuous fiber-reinforced thermoplastic resin composite material for the main plate 110. can do. The continuous fiber-reinforced thermoplastic resin composite constituting the main plate 110 includes 40 to 70% by weight of reinforcing fibers and 30 to 60% by weight of the thermoplastic resin, and when the content of the reinforcing fibers exceeds 70% by weight, There is a problem that the uniformity of structural performance is deteriorated due to the occurrence of fiber pulling, and there is a problem that deelamination occurs in the fiber pulling portion, and if the reinforcing fiber content is less than 40% by weight, structural rigidity is not satisfied.

The rib 120 is composed of a long fiber-reinforced thermoplastic resin composite, and includes 20 to 40% by weight of reinforcing fibers and 60 to 80% by weight of a thermoplastic resin. When the content of the reinforcing fiber exceeds 40% by weight, there is a problem in that unmolding and voids occur due to an excessive amount of fiber, and when the content of the reinforcing fiber is less than 20% by weight, structural rigidity is not satisfied .

The long fiber-reinforced thermoplastic resin composite applied to the rib 120 is inexpensive compared to the continuous fiber-reinforced thermoplastic resin composite, so that cost reduction can be achieved, and the design can be freely molded, and the appearance is diverse and has a more uniform surface. There is an advantage that can be easily implemented, and there is an advantage of reinforcing a local shape by connecting with the luggage lead 100.

The reinforcing fibers constituting the continuous fiber-reinforced thermoplastic resin composite material or the long fiber-reinforced thermoplastic resin composite may be at least one selected from the group consisting of glass fibers, carbon fibers, and aramid fibers. In addition, the thermoplastic resin constituting the continuous fiber reinforced thermoplastic resin composite material or the long fiber reinforced thermoplastic resin composite material may be polypropylene or polyamide.

Referring to FIG. 4, in the luggage lead 200 according to an embodiment of the present invention, a ratio of the depth 111h of the lower surface reinforcing groove and the height of the rib 120h may be 1:0.5 to 1:1.2. When the ratio between the depth 111h of the lower surface reinforcement groove and the height of the rib 120h is less than 1:0.5, there is a problem in that the seating property of the luggage lead is deteriorated due to the low rib height, and the depth of the lower surface reinforcement groove 111h and When the ratio of the rib height 120h exceeds 1:1.2, the rib protrudes outside the reinforcing groove on the lower surface, making it unsuitable for seating the luggage lid.

5 to 8 show a luggage lid 100 according to another embodiment of the present invention. 5 to 8, the luggage lid 100 further includes a cover plate 130 in addition to the main plate 110 and the rib 120. That is, it further includes a cover plate 130 formed of a continuous fiber-reinforced thermoplastic resin composite in the luggage lid 100 shown in FIGS. 2 to 4. The luggage lid 100 can implement a predetermined shape more firmly by using a continuous fiber-reinforced thermoplastic resin composite for the cover plate 130, compared to the luggage lid 100 not including the cover plate 130. The structural rigidity is further improved. The continuous fiber-reinforced thermoplastic resin composite constituting the cover plate 130 includes 40 to 70% by weight of reinforcing fibers and 30 to 60% by weight of the thermoplastic resin, and when the content of the reinforcing fibers exceeds 70% by weight, There is a problem that the uniformity of structural performance is deteriorated due to the occurrence of fiber pulling, and there is a problem that deelamination occurs at the fiber pulling portion, and if the reinforcing fiber content is less than 40% by weight, the structural rigidity is not satisfied .

The reinforcing fibers constituting the continuous fiber-reinforced thermoplastic resin composite may be at least one selected from the group consisting of glass fibers, carbon fibers, and aramid fibers. In addition, the thermoplastic resin constituting the continuous fiber-reinforced thermoplastic resin composite may be polypropylene or polyamide.

Referring to FIG. 8, a ratio of the thickness of the main plate 110t and the thickness of the cover plate 130t may be 1:0.15 to 1:1. When the ratio of the thickness of the main plate (110t) and the thickness of the cover plate (130t) is less than 1:0.15, the thickness of the cover plate becomes too thin compared to the main plate, and when it exceeds 1:1, the thickness of the cover plate is compared to the main plate. There is a problem that the weight of the luggage lid increases due to the thickening of the.

In addition, referring to FIG. 6, a reinforcing groove 111 is formed when the main plate 110 constituting the luggage lead 100 is in the bottom direction, and the reinforcing grooves 111 are intersected with each other. A plurality of ribs 120 are provided. The rib 120 includes a horizontal rib 121 and a vertical rib 122. The structure in which the reinforcing groove 111 and the rib 120 do not exist in the luggage lead 100 by the lower surface reinforcing groove 111 and the rib 120 present in the main plate 110 of the luggage lead 100 In comparison, it is possible to reduce the weight.

The luggage lead 100 can further improve the structural rigidity of the luggage lead 100, and light weight, since a predetermined shape can be more firmly implemented by using a continuous fiber-reinforced thermoplastic resin composite material for the main plate 110. can do. The continuous fiber-reinforced thermoplastic resin composite constituting the main plate 110 includes 40 to 70% by weight of reinforcing fibers and 30 to 60% by weight of the thermoplastic resin, and when the content of the reinforcing fibers exceeds 70% by weight, There is a problem that the uniformity of structural performance is deteriorated due to the occurrence of fiber pulling, and there is a problem that deelamination occurs at the fiber pulling portion, and if the reinforcing fiber content is less than 40% by weight, the structural rigidity is not satisfied .

The rib 120 is made of a long fiber-reinforced thermoplastic resin composite, and includes 20 to 40% by weight of reinforcing fibers and 60 to 80% by weight of a thermoplastic resin. When the content of the reinforcing fiber exceeds 40% by weight, there is a problem in that unmolding and voids occur due to an excessive amount of fiber, and when the content of the reinforcing fiber is less than 20% by weight, structural rigidity is not satisfied .

In addition, referring to FIG. 7, in an exploded perspective view of the luggage lead 100, the main plate 110 has an upper reinforcing groove 113 in addition to the gripping groove 112 and the lower reinforcing groove 111. A plurality of upper reinforcing grooves 113 are formed, and each upper reinforcing groove 113 further includes a filling member 140 positioned therein.

The filling member 140 is a foam made of one or more resins selected from the group consisting of polyvinyl chloride, polyurethane, acrylic, polystyrene, polyetheramide, and styrene-acronitrile-copolymer. Steps can be reinforced by the upper reinforcing groove 113 and the filling member 140 positioned therein, and the luggage lid of FIGS. 2 to 4 without the upper reinforcing groove 113 and the filling member 140 ( Compared to 100), it can be lighter and has excellent durability as it can withstand heavy loads and strong impacts. In addition, the level difference between the main plate 110 caused by the upper reinforcing groove 113 and the filling member 140 is covered by the cover plate 130 to maintain the flatness of the luggage lid 100.

Referring to FIG. 8, a ratio of the thickness of the main plate 110 and the cover plate 130 may be 1:0.15 to 1:1. When the ratio of the thickness of the main plate (110t) and the thickness of the cover plate (130t) is less than 1:0.15, the thickness of the cover plate becomes too thin compared to the main plate, and when it exceeds 1:1, the thickness of the cover plate is compared to the main plate. There is a problem that the weight of the luggage lid increases due to the thickening of the.

In the present invention, the thickness of the main plate 110 and the rib 120d is 3.5mm: 2 ~ 4mm or 1 ~ 3mm: 2mm. The thickness of the rib may be the thickness of the horizontal rib (121d) and the vertical rib (122d).

In Experimental Example 3 of the present invention, the thickness of the main plate 110 and the ribs 121d and 122d was 3.5mm: 2 to 4mm, in the case of the luggage lead of Examples 1 to 3, in both the load test and the impact test It was confirmed that the amount of vertical deformation was less than 10 mm, and the thickness of the main plate 110 and the ribs 121d and 122d in Experimental Example 4 of the present invention was 1 to 3 mm: 2 mm, in the case of the luggage lead of Examples 4 to 9, the load In both the test and the impact test, it was confirmed that the vertical deformation amount was less than 10 mm. In the case of the luggage lids of Examples 4 to 9 further comprising a cover plate and a filling member, the impact test and the load test despite the thinner thickness of the main plate and ribs compared to the luggage lids of Examples 1 to 3 Was satisfied, and more lightweight was possible.

In the present invention, in the case of the luggage lid 100 of FIGS. 5 to 8, there is a disadvantage in that the process step increases according to the application of the filling member 140 for reinforcing the step, including the cover plate 130, Due to the presence of the cover plate 130, the upper reinforcing groove 113, and the filling member 140 positioned therein, the amount of sagging can be reduced compared to the luggage lids of FIGS. 2 to 4, and the main plate 130 The thickness can be made thin, and weight reduction is possible.

In another aspect, the present invention comprises the steps of forming a main plate by placing a continuous fiber-reinforced thermoplastic resin composite in a mold; And forming a rib by disposing a long fiber-reinforced thermoplastic resin composite in a state in which the main plate is located in the mold.

According to an embodiment of the present invention, the luggage lid 100 of FIGS. 2 to 4 was manufactured. The manufacturing method of the luggage lid 100 of the present invention first includes a step (S10) of forming the main plate 110 by placing a continuous fiber-reinforced thermoplastic resin composite in a mold. The main plate 110 is formed by compressing the continuous fiber-reinforced thermoplastic composite material at a preset pressure using the compression mold. At this time, the shape of the main plate 110 may vary according to the shape of the compression mold. Referring to FIG. 3, when the main plate 110 constituting the luggage lead 100 is formed, a reinforcing groove 111 is formed when the same compression mold is used in the bottom direction.

The continuous fiber-reinforced thermoplastic resin composite constituting the main plate 110 includes 40 to 70% by weight of reinforcing fibers and 30 to 60% by weight of the thermoplastic resin. The reinforcing fibers may be at least one selected from the group consisting of glass fibers, carbon fibers and aramid fibers, or the thermoplastic resin may be polypropylene or polyamide.

By using the continuous fiber-reinforced thermoplastic resin composite material, a predetermined shape can be more firmly implemented, so that the structural rigidity of the main plate 110 applied to the luggage lead 100 can be further improved, and the luggage lead 100 The weight itself can be reduced.

Next, a step (S20) of forming a rib by disposing a long fiber-reinforced thermoplastic resin composite in a state in which the main plate is located in the mold (S20).

A rib 120 connected to the main plate 110 by injection molding by disposing a long fiber-reinforced thermoplastic composite material while the main plate 110 is positioned in the mold without separating the main plate 110 from the compression mold. ) To form. Accordingly, the main plate 110 and the rib 120 are formed in one mold using a one-shot over-molding method. Referring to FIG. 3, the ribs 120 are formed to be located in the lower surface reinforcing groove 111, and are manufactured to cross each other to form a plurality of ribs. The rib 120 is manufactured such that a horizontal rib 121 and a vertical rib 122 are formed. The structure in which the reinforcing groove 111 and the rib 120 do not exist in the luggage lead 100 by the lower surface reinforcing groove 111 and the rib 120 present in the main plate 110 of the luggage lead 100 In comparison, it is possible to reduce the weight.

In addition, referring to FIG. 4, when the luggage lead 200 is manufactured, a ratio of the depth 111h of the lower surface reinforcing groove and the height of the rib 120h may be 1:0.5 to 1:1.2. When the ratio between the depth 111h of the lower surface reinforcement groove and the height of the rib 120h is less than 1:0.5, there is a problem in that the seating property of the luggage lead is deteriorated due to the low rib height, and the depth of the lower surface reinforcement groove 111h and When the ratio of the rib height 120h exceeds 1:1.2, the rib protrudes outside the reinforcing groove on the lower surface, making it unsuitable for seating the luggage lid.

In addition, in FIG. 4, the main plate 110 and the ribs 120d, 121d, and 122d may have a thickness of 3.5 mm: 2 to 4 mm.

The long fiber-reinforced thermoplastic resin composite constituting the rib 120 includes 20 to 40% by weight of reinforcing fibers and 60 to 80% by weight of the thermoplastic resin. The reinforcing fibers may be at least one selected from the group consisting of glass fibers, carbon fibers and aramid fibers, or the thermoplastic resin may be polypropylene or polyamide. In addition, long fiber reinforced thermoplastic resin composites are inexpensive compared to continuous fiber reinforced thermoplastic resin composites, so it can reduce the cost of manufacturing luggage leads, and designs can be freely molded, and a variety of and more uniform appearances are easy. There is an advantage that can be implemented in a way, and there is an advantage of reinforcing a local shape by connecting with the main plate 110.

In addition, since the main plate 110, which is formed first for injection molding and maintains a high temperature, is not separated from the compression mold, the long fiber reinforced thermoplastic composite is directly supplied to the rib 120 to proceed with injection molding. In order to proceed with insert injection molding by supplying the preform to the injection mold, the compression molded preform is taken out from the compression mold, and the drawn preform is cut to fit the injection mold, and then inserted into the injection mold. I never do that. Accordingly, according to the present invention, compression molding and injection molding are performed in a single mold in a one-shot overmolding method, so that time and cost can be saved compared to conventional insert overmolding.

In addition, since compression molding for forming the main plate 110 and injection molding for forming the rib 120 are performed in one compression mold, the main plate 110 and the rib 120 have a high bonding force. That is, compression molding to form the main plate 110 and injection molding to form the ribs 120 are performed in one mold in a one-shot overmolding method, and the main plate 110 is at a high temperature. In the state that the gel state is maintained, the long fiber-reinforced thermoplastic composite constituting the ribs 120 is placed in the compression mold, so that the continuous fiber-reinforced thermoplastic composite and the long-fiber-reinforced thermoplastic composite are each at a high temperature in one compression mold. It is fused and bonded, and has excellent interfacial adhesion.

In addition, compression molding and injection molding are carried out in one mold within a short time, so that the chemical bond between the main plate 110 made of a continuous fiber reinforced thermoplastic composite and the rib 120 made of a long fiber reinforced thermoplastic composite is compared to insert overmolding. Because it can be easily bonded, the interfacial adhesion is superior to one-shot overmolding compared to insert overmolding.

In addition, a luggage lid 100 according to another embodiment of the present invention is as follows with reference to FIGS. 5 to 8. Show. 5 to 8, the luggage lid 100 includes a cover plate 130 in addition to the main plate 110 and the rib 120. In addition, the main plate 110 has an upper reinforcing groove 113 in addition to the lower reinforcing groove 111. Therefore, when the main plate 110 is compression molded, it is formed to have an upper reinforcing groove 113 in addition to the reinforcing groove 111.

Referring to FIG. 6, a reinforcing groove 111 is formed when the main plate 110 constituting the luggage lead 100 is in the bottom direction, and a plurality of reinforcing grooves 111 are formed by crossing each other positioned in the reinforcing groove 111 on the lower surface. A rib 120 is formed, and a horizontal rib 121 and a vertical rib 122 are formed from the rib 120. The structure in which the reinforcing groove 111 and the rib 120 do not exist in the luggage lead 100 by the lower surface reinforcing groove 111 and the rib 120 present in the main plate 110 of the luggage lead 100 In comparison, it is possible to reduce the weight.

In addition, the main plate 110 is manufactured to form an upper surface reinforcing groove 113 in addition to the gripping groove 112 and the lower surface reinforcing groove 111, and manufactured to form a plurality of the upper surface reinforcing grooves 113, respectively. The upper surface reinforcing groove 113 is manufactured to further include a filling member 140 located therein.

The filling member 140 is a foam made of one or more resins selected from the group consisting of polyvinyl chloride, polyurethane, acrylic, polystyrene, polyetheramide, and styrene-acronitrile-copolymer. Steps can be reinforced by the upper reinforcing groove 113 and the filling member 140 positioned therein, and the luggage lid of FIGS. 2 to 4 without the upper reinforcing groove 113 and the filling member 140 ( Compared to 100), it is possible to reduce the weight of the luggage lid of Figs. 5 to 8, and can withstand heavy loads and strong impacts, resulting in excellent durability.

In addition, the method of manufacturing the luggage lid further includes a step (S30) of forming a cover plate by placing a continuous fiber-reinforced thermoplastic resin composite in a mold.

After placing the continuous fiber-reinforced thermoplastic resin composite in a new mold, compression molding is performed to form a cover plate. By using a continuous fiber-reinforced thermoplastic resin composite for the cover plate 130, a predetermined shape can be more firmly implemented, and thus structural rigidity is further improved compared to the luggage lid 100 that does not include the cover plate 130. The continuous fiber-reinforced thermoplastic resin composite constituting the cover plate 130 includes 40 to 70% by weight of reinforcing fibers and 30 to 60% by weight of the thermoplastic resin.

In addition, the method of manufacturing the luggage lid of the present invention further includes the step of coupling the formed cover plate 130 to the main plate 110 on which the ribs 120 are formed.

The formed cover plate 130 is coupled to the main plate 110 in which the ribs 120 are formed in the lower reinforcing groove 111 and the filling member 140 is formed in the upper reinforcing groove 113. You will manufacture a luggage lid. By combining with the cover plate 130, the top of the luggage lid maintains the flatness, so that the load can be loaded in a flat state. Referring to FIG. 8, a ratio of the thickness of the main plate 110w and the thickness of the cover plate 130w may be manufactured in a ratio of 1:0.15 to 1:1. In addition, in FIG. 8, the thickness of the main plate 110 and the ribs 120d, 121d, and 122d may be 1 to 3 mm: 2 mm.

In the present invention, in the case of the luggage lid 100 of FIGS. 5 to 8, the process step includes the cover plate 130, and according to the application of the filling member 140 for reinforcing the steps of the main plate 110 Although there is an increasing disadvantage, the amount of sagging can be reduced compared to the luggage lids of FIGS. 2 to 4 by the presence of the cover plate 130, the upper reinforcing groove 113, and the filling member 140 located therein, Since the thickness of the main plate 130 can be made thin, it is possible to further reduce the weight.

Hereinafter, the present invention will be described in more detail by examples. However, the following examples are merely illustrative of the present invention, and the contents of the present invention are not limited to the following examples.

Experimental Example 1. Fabrication of a luggage lead including a lower surface reinforcing groove and a rib positioned therein

Example 1

In order to form the main plate constituting the luggage lead, a continuous fiber-reinforced thermoplastic resin composite (CFT) containing 60% by weight of glass fibers and 40% by weight of polypropylene was used.

In order to form the ribs, a long fiber-reinforced thermoplastic resin composite (LFT) containing 40% by weight of glass fibers and 60% by weight of polypropylene was used.

The continuous fiber-reinforced thermoplastic resin composite (CFT) was placed in a mold and then compression-molded to form a main plate having a reinforcing groove. At this time, the main plate was formed to have a thickness of 3.5 mm, and the depth of the lower surface reinforcing groove was 16.5 mm.

A long fiber-reinforced thermoplastic resin composite (LFT) was placed in the mold while the main plate was positioned, and the ribs were injection-molded so that the ribs were positioned in the reinforcing grooves. At this time, the thickness of the manufactured rib was 2.0 mm.

In this way, a luggage lead was manufactured using a one-shot over-molding method in which compression molding of the main plate and injection molding of the ribs are formed in one mold so that ribs are formed in the reinforcing grooves under the main plate and the main plate. The resulting luggage lid weighed 5.076 kg.

Example 2

A luggage lead was manufactured in the same manner as in Example 1, except that the thickness of the main plate was 3.5 mm, the depth of the bottom reinforcing groove was 16.5 mm, and the thickness of the rib was 3.0 mm, and the luggage lead weight was 5.403 kg. .

Example 3

A luggage lead was manufactured in the same manner as in Example 1, except that the thickness of the main plate was 3.5 mm, the depth of the bottom reinforcing groove was 16.5 mm, and the thickness of the rib was 4.0 mm, and the luggage lead weight was 5.730 kg. .

Comparative Example 1

A luggage lead was manufactured in the same manner as in Example 1, except that the thickness of the main plate was 2.5 mm, the depth of the bottom reinforcement groove was 17.5 mm, and the thickness of the rib was 2.0 mm, and the luggage lead weight was 3.865 kg. .

Comparative Example 2

A luggage lead was manufactured in the same manner as in Example 1, except that the thickness of the main plate was 3.0 mm, the depth of the bottom reinforcing groove was 17 mm, and the thickness of the rib was 2.0 mm, and the luggage lead weight was 4.472 kg. .

Comparative Example 3

A luggage lead was manufactured in the same manner as in Example 1, except that the thickness of the main plate was 2.5 mm, the depth of the bottom reinforcement groove was 17.5 mm, and the thickness of the rib was 3.0 mm, and the luggage lead weight was 4.212 kg. .

Comparative Example 4

A luggage lead was manufactured in the same manner as in Example 1 except that the thickness of the main plate was 3.0 mm, the depth of the bottom reinforcement groove was 17.0 mm, and the thickness of the rib was 3.0 mm, and the luggage lead weight was 4.809 kg. .

Comparative Example 5

A luggage lead was manufactured in the same manner as in Example 1, except that the thickness of the main plate was 2.5 mm, the depth of the bottom reinforcement groove was 17.5 mm, and the thickness of the rib was 4.0 mm, and the luggage lead weight was 4.559 kg. .

Comparative Example 6

A luggage lead was manufactured in the same manner as in Example 1, except that the thickness of the main plate was 3.0 mm, the depth of the bottom reinforcing groove was 17.0 mm, and the thickness of the rib was 4.0 mm, and the luggage lead weight was 5.146 kg. .

Main plate thickness Bottom reinforcement groove depth Rib thickness Luggage lead weight Example 1 3.5 16.5 2 5.076 Example 2 3.5 16.5 3 5.403 Example 3 3.5 16.5 4 5.730 Comparative Example 1 2.5 17.5 2 3.865 Comparative Example 2 3 17 2 4.472 Comparative Example 3 2.5 17.5 3 4.212 Comparative Example 4 3 17 3 4.809 Comparative Example 5 2.5 17.5 4 4.559 Comparative Example 6 3 17 4 5.146

Experimental Example 2. Load test and impact test of a luggage lead including a reinforcing groove and a rib positioned therein

Using the luggage leads of Examples 1 to 3 and Comparative Examples 1 to 6, a load test was measured as shown in FIG. 9. Specifically, a force of 80 kgf was applied at room temperature with a block (300mm*300mm) to the center of the luggage lid for 30 minutes, and the amount of vertical deformation was measured. The vertical deformation is measured within 1 hour after removing the load, and the load test is conducted under the same conditions as the actual vehicle installation, and if the vertical deformation is less than 10 mm, it is evaluated as suitable for the luggage lid. The maximum amount of deflection in the state where the load was applied was measured.

Using the luggage leads of Examples 1 to 3 and Comparative Examples 1 to 6, the impact test was measured as shown in FIG. 10. It is a test rule to freely fall with a 20kg sandbag from a height of 1m in the center of the luggage lid, or to throw a sandbag with the tester's strong force using a 10kg sandbag.If the vertical deformation is less than 10mm It was evaluated as suitable for the known read.

Load test result (mm) Impact test result (mm) Example 1 5.970 8.805 Example 2 4.180 9.495 Example 3 3.270 9.740 Comparative Example 1 6.490 10.985 Comparative Example 2 6.260 10.415 Comparative Example 3 4.295 11.865 Comparative Example 4 4.240 11.345 Comparative Example 5 3.335 11.725 Comparative Example 6 3.295 10.925

As a result of the load test, it was confirmed that the maximum amount of sag required in the test was satisfied in Examples 1 to 3 and Comparative Examples 1 to 6. However, as a result of the impact test, in the case of Examples 1 to 3, the vertical deformation amount was within 10 mm, but in the case of Comparative Examples 1 to 6, it was confirmed that the vertical deformation amount exceeded 10 mm. In addition, in the case of the impact test, as the weight of the luggage lead increased in Comparative Examples 1 to 6, the weight (weight) of the luggage lead product was merged with the impact, and it was confirmed that the amount of sag increased as the weight increased.

Experimental Example 3. Fabrication of a luggage lid including a reinforcing groove on the lower surface of the cover plate and the main plate, a rib located therein, and a reinforcing groove on the upper surface and a filling member

Example 4

In order to form the main plate constituting the luggage lead, a continuous fiber-reinforced thermoplastic resin composite (CFT) containing 60% by weight of glass fibers and 40% by weight of polypropylene was used.

In order to form the cover plate constituting the luggage lead, a continuous fiber-reinforced thermoplastic resin composite (CFT) containing 40% by weight of glass fibers and 60% by weight of polypropylene was used.

In order to form the ribs, a long fiber-reinforced thermoplastic resin composite (LFT) containing 40% by weight of glass fibers and 60% by weight of polypropylene was used.

The continuous fiber-reinforced thermoplastic resin composite (CFT) was placed in a mold and then compression-molded to form a main plate having a lower surface reinforcing groove and an upper surface reinforcing groove. At this time, the main plate was formed to have a thickness of 1.0 mm, and the depth of the lower surface reinforcing groove was 17.5 mm.

A long fiber-reinforced thermoplastic resin composite (LFT) was placed in the mold while the main plate was positioned, and formed by injection molding so that the rib was positioned in the reinforcing groove. At this time, the thickness of the manufactured rib was 2.0 mm.

In this way, a one-shot over-molding method in which compression molding of the main plate and injection molding of the ribs are formed in one mold so that ribs are formed in the reinforcing grooves under the upper and lower surfaces of the main plate and the reinforcing grooves under the main plate are used. I did.

Next, in order to reinforce the step difference, a filling member in the form of a foam made of a urethane foam material was formed in each upper reinforcing groove formed on the main plate. At this time, the width of one filling member formed on the upper surface bogamhong was 50 mm.

Thereafter, the continuous fiber-reinforced thermoplastic resin composite was placed in a new mold and then compression molded to form a cover plate. At this time, the cover plate was formed to a thickness of 0.5 mm.

The formed cover plate was coupled to a main plate having a rib formed in the lower reinforcing groove and a filling member formed in the upper reinforcing groove to finally manufacture a luggage lead. The weight of the manufactured luggage lid was 2.491 kg.

Example 5

The thickness of the main plate is 1.0 mm, the depth of the lower surface reinforcement groove is 17.0 mm, the thickness of the rib is 2.0 mm, the width of the filling member formed in the upper surface reinforcement groove is 50 mm, and the thickness of the cover plate is 1.0 mm. A luggage lid was manufactured in the same manner as in Example 4, except that the weight was 2.953 kg.

Example 6

The thickness of the main plate is 2.0 mm, the depth of the lower reinforcing groove is 15.5 mm, the thickness of the rib is 2.0 mm, the width of the filling member formed in the upper reinforcing groove is 50 mm, and the thickness of the cover plate is 0.5 mm. A luggage lid was manufactured in the same manner as in Example 4, except that the weight was 3.814 kg.

Example 7

The thickness of the main plate is 2.0 mm, the depth of the lower reinforcing groove is 15.0 mm, the thickness of the rib is 2.0 mm, the width of the filling member formed in the upper reinforcing groove is 50 mm, and the thickness of the cover plate is 1.0 mm. A luggage lid was manufactured in the same manner as in Example 4, except that the weight was 4.270 kg.

Example 8

The thickness of the main plate is 3.0 mm, the depth of the bottom reinforcement groove is 13.5 mm, the thickness of the rib is 2.0 mm, the width of the filling member formed in the upper reinforcement groove is 50 mm, and the thickness of the cover plate is 0.5 mm. A luggage lid was manufactured in the same manner as in Example 4, except that the weight was 5.115 kg.

Example 9

The thickness of the main plate is 3.0 mm, the depth of the lower reinforcing groove is 13.0 mm, the thickness of the rib is 2.0 mm, the width of the filling member formed in the upper reinforcing groove is 50 mm, and the thickness of the cover plate is 1.0 mm. A luggage lid was manufactured in the same manner as in Example 4, except that the weight was 5.566 kg.

Main plate thickness Cover plate thickness Bottom reinforcement groove depth Rib thickness Fill member width Luggage lead weight Example 4 One 0.5 17.5 2 50 2.491 Example 5 One One 17 2 50 2.953 Example 6 2 0.5 15.5 2 50 3.814 Example 7 2 One 15 2 50 4.270 Example 8 3 0.5 13.5 2 50 5.115 Example 9 3 One 13 2 50 5.566

Experimental Example 4. Load test and impact test of a luggage lid including a cover plate, a reinforcing groove at the bottom of the main plate, a rib located therein, and a reinforcing groove on the upper surface and a filling member

Using the luggage leads of Examples 4 to 9, the load test (loading) was measured as in Experimental Example 2. In addition, using the luggage leads of Examples 4 to 9, the impact test (impact) was measured as in Experimental Example 2.

Load test result (mm) Impact test result (mm) Example 4 6.560 8.366 Example 5 6.182 6.467 Example 6 4.151 5.389 Example 7 4.063 6.236 Example 8 3.462 5.825 Example 9 3.441 5.166

In the present invention, as a result of evaluation based on the minimum thickness at which the main plate 110 and the cover plate 130 can be formed, in the case of Examples 4 to 9, it was confirmed that the test results were satisfied in both the load test and the impact test. Could

Therefore, for the invention in which the main plate 110 and the cover plate 130 are applied in combination, a design based on the minimum thickness is possible. In particular, in the case of Example 4, it was confirmed that the weight reduction of 50% is possible compared to Example 1 without the upper surface reinforcing groove 113 and the filling member 140.

100: luggage lead 110: main plate
110t: main plate thickness 110w: main plate width
111: lower surface reinforcement groove 111h: lower surface reinforcement groove depth
112: gripping groove 113: upper surface reinforcement groove
113w: upper reinforcement groove width 120: rib
121: horizontal rib 122: vertical rib
120h: rib height 130: cover plate
130t: cover plate thickness 140: filling member
140w: fill member width 120d: rib thickness
121d: horizontal rib thickness 122d: vertical rib thickness

Claims (19)

A main plate formed of a continuous fiber-reinforced thermoplastic resin composite; And
A luggage lead comprising a rib formed of a long fiber-reinforced thermoplastic resin composite,
The luggage lead further comprises a cover plate formed of a continuous fiber-reinforced thermoplastic resin composite,
The ratio of the thickness of the main plate and the cover plate is 1:0.15-1:1,
The thickness of the main plate and the rib is 1 ~ 3mm: 2mm luggage lead. delete The luggage lid of claim 1, wherein the main plate is provided with a lower surface reinforcing groove or an upper surface reinforcing groove. The luggage lid of claim 3, wherein the ribs are located in the lower surface reinforcing grooves and cross each other to form a plurality of ribs. The luggage lead of claim 3, wherein the upper surface reinforcing groove is a plurality, and further comprises a filling member positioned in each upper surface reinforcing groove. The luggage lead of claim 1, wherein the continuous fiber-reinforced thermoplastic resin composite contains 40 to 70% by weight of the reinforcing fiber and 30 to 60% by weight of the thermoplastic resin. The luggage lead of claim 1, wherein the long fiber-reinforced thermoplastic resin composite contains 20 to 40% by weight of reinforcing fibers and 60 to 80% by weight of the thermoplastic resin. In claim 5, wherein the filling member is a foam type made of one or more resins selected from the group consisting of polyvinyl chloride, polyurethane, acrylic, polystyrene, polyetheramide, and styrene-acronitrile-copolymer. That is, the luggage lead. The luggage lid of claim 3, wherein a ratio of the depth of the lower surface reinforcing groove and the height of the rib is 1:0.5 to 1:1.2. delete delete In claim 6, wherein the reinforcing fiber is at least one selected from the group consisting of glass fiber, carbon fiber and aramid fiber,
Wherein the thermoplastic resin is polypropylene or polyamide, the luggage lid. In claim 7, wherein the reinforcing fiber is at least one selected from the group consisting of glass fiber, carbon fiber and aramid fiber,
Wherein the thermoplastic resin is polypropylene or polyamide, the luggage lid. Forming a main plate by placing a continuous fiber-reinforced thermoplastic resin composite in a mold; And
Including the step of forming a rib by arranging a long fiber reinforced thermoplastic resin composite in the state in which the main plate is located in the mold,
As a method of manufacturing a luggage lid,
The luggage lid manufacturing method comprises the steps of forming a cover plate by placing a continuous fiber-reinforced thermoplastic resin composite in a mold; And
Further comprising the step of coupling the formed cover plate to the main plate with ribs,
The ratio of the thickness of the main plate and the cover plate is 1:0.15-1:1,
The thickness of the main plate and the rib is 1 ~ 3mm: 2mm luggage lead manufacturing method. delete [15] The method of claim 14, wherein when the main plate is formed, a lower surface reinforcement groove or an upper surface reinforcement groove is formed. The method of claim 16, wherein the ribs are formed to be located in the lower surface reinforcing grooves, and are formed in plurality by crossing each other. The method of claim 16, wherein the upper surface reinforcing groove is formed in a plurality, and further comprising forming a filling member in the upper surface reinforcing groove. The method of claim 14, wherein the compression molding of the main plate and injection molding of the ribs are formed in one mold.

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