JP2001263313A - Mounting structure of resin molded product and method for molding resin wokded product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform reutilization of a resin molded product without performing a process to separate a different kind of a material when a resin molded product is recycled. SOLUTION: A clip material 4 to hold a fixing member 8 made of a metal is insert-molded on a mounting surface 1A of a rear spoiler 1 made of synthetic resin. The fixing member 8 is removed by pulling it off from the clip material 4 and the rear spoiler 1 formed of a different kind of a material and the fixing member 8 are simply separated from each other. Further, since the clip material 4 has a melt point higher than that of the rear spoiler 1 but is molded by using same synthetic resin as that of the rear spoiler 1, during recycling, different resin is not mixed. Thereby, a need for a process to separate a different kind of a material at a recycle process is eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rear spoiler mounted on a trunk, a rear gate, a roof, etc. of a vehicle body, for example.
The present invention relates to a mounting structure of a resin molded product used as a vehicle exterior part such as a carrier and a method of molding the resin molded product.

[0002]

2. Description of the Related Art Conventionally, in a passenger car or the like, a driving force is generated by pressing a vehicle body against a road surface side by utilizing an airflow during high-speed traveling.
In some cases, a rear spoiler is attached to the rear of the trunk lid of the vehicle body to increase the braking force. When fixing such a rear spoiler to the trunk lid, a mounting hole is formed in the outer panel constituting the trunk lid, a mounting bolt is inserted through the mounting hole, and a bolt is fastened with a nut.
A nut type mounting structure is common.

When the rear spoiler is fixed by such a bolt and nut type, it is necessary to attach a bolt or a nut to the rear spoiler.
Japanese Patent Publication No. 218819 discloses a plastic blow-molded product and a method of molding the same, in which a nut made of a metal material is integrated into a mounting surface of the rear spoiler by insert molding when the rear spoiler is molded.

[0004] In recent years, from the viewpoint of environmental conservation, the shift from mass production / mass consumption / mass disposal to recycling has been demanded on a global scale, and recycling that makes effective use of resources is also important in society. Is an important task. In order to solve these issues, various industries are required to respond, and in order to promote such recycling, the automobile industry is also demanding the structure of highly recyclable engines, bodies, and exterior parts. Have been. To explain an example of recycling in the automobile industry, first, the engine, doors, bumpers, rear spoilers, and other exterior components are removed from the vehicle to be discarded and collected, separated by type, and separated into different processes. To recycle. Here, a description will be given of a step of recycling the exterior component made of a synthetic resin such as the above-mentioned rear spoiler. The rear spoiler separated for each type removes the paint film, then crushes or pulverizes, and then removes the paint film. Thereafter, it is washed to beret and melted to be regenerated as a resin. As described above, the rear spoiler formed of a thermoplastic resin can be reused by repeating heating and cooling, and is originally a material having excellent recyclability. However, when a metal fixing member such as a nut or a bolt is insert-molded into a synthetic resin product as in the conventional example described above, when the rear spoiler is crushed, a resin used as a raw material of the rear spoiler and a metal piece of the fixing member such as a metal nut are used. These steps are necessary because these are mixed with each other, which not only complicates the recycling process, but also makes it difficult to completely remove metal pieces in the final process. This was a factor that led to quality deterioration.

An object of the present invention is to provide a mounting structure for a resin molded product that does not require separation of different materials for recycling and a method for molding the resin molded product. And

[0006]

According to a first aspect of the present invention, there is provided a resin molded product mounting structure, wherein a clip member for holding a fixing member made of a different material is provided on a mounting surface of the resin molded product. A substrate portion fixed to the mounting surface; and a support plate formed by bending the substrate portion into an L-shape and facing the substrate portion, and holding the fixing member between the substrate portion and the support plate. In addition to forming a fitting groove, a guide groove for inserting a fixing portion of the fixing member into the support plate is formed.

[0007] With the above arrangement, the fixing member is assembled to the resin molded product by fitting the fixing member into the clip material. Since this fixing member can be removed from the clip material as needed, it is possible to easily disassemble the resin molded product and the fixing member made of a different material such as metal. As a result, when recycling resin molded products,
When the resin molded product is pulverized, the resin molded product and the fixing member do not mix with each other, so that there is no need to provide a step of separating different materials.

According to a second aspect of the present invention, there is provided the mounting structure for a resin molded product according to the first aspect, wherein a projection claw is formed on the substrate portion so as to be engaged with a front edge of the fixing member. Therefore, when the fixing member is assembled to the clip material, the fixing member is prevented from coming off by the projection claws.

According to a third aspect of the present invention, there is provided the mounting structure for a resin molded product according to the first or second aspect, wherein a stopper portion is formed at an inner edge of the guide groove for restricting the fixed portion from coming off. Therefore, the fixing member is securely prevented from coming off by the stopper portion.

According to a fourth aspect of the present invention, in the mounting structure for a resin molded product according to any one of the first to third aspects, a concave portion is formed in the mounting surface. Since the base portion of the clip material is embedded in the bottom of the base member and the curved surface reaching the substrate portion is formed on the inner peripheral surface of the concave portion, when the fixing member is assembled to the clip material, the fixing member has the concave portion. Guided along the curved surface, the fixing member and the clip member can be easily positioned. Thereafter, the fixing member is fitted into the fitting groove of the clip material only by sliding the fixing member along the substrate portion of the clip material.

According to a fifth aspect of the present invention, there is provided a method for molding a resin molded product, wherein the resin molded product and the clip material holding the fixing member are formed of a synthetic resin made of the same material, and the clip material is formed of the resin molded product. It is formed of a synthetic resin having a higher melting point, and the substrate portion of the clip material is insert-molded on the mounting surface of the resin molded product when the resin molded product is molded.

Thus, when molding the resin molded product, the clip material having a higher melting point than the resin molded product is not melted, and the clip material is insert-molded on the mounting surface of the resin molded product. When the resin molded product is heated at a temperature higher than the melting point of the clip material, the resin molded product and the clip material are melted, but different resins are mixed because the resin molded product and the clip material are molded with the same synthetic resin. Not even. Thereby, it is not necessary to separate different kinds of materials, and the resin molded product can be completely recycled.
At the same time, the quality of the resin finally regenerated through the melting step is improved.

According to a sixth aspect of the present invention, there is provided a method of molding a resin molded product according to the fifth aspect of the present invention, wherein a flange protruding outward is formed at an outer edge of the substrate. The flange projecting from the substrate portion cuts into the inside of the resin molded product, and the resin molded product and the clip material are firmly integrated.

According to a seventh aspect of the present invention, there is provided a method for molding a resin molded article according to the fifth or sixth aspect, wherein the synthetic resin in a molten or softened state is molded during molding of the resin molded article. Since the curved or tapered guide portion is formed at least on both side edges of the flange portion so as to be guided to the back surface side of the portion, the molten or softened resin is formed on the back surface of the flange portion at the time of molding a resin molded product. Make sure to turn to the side.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.
3 will be described. FIG. 1 shows a state before the spoiler 1 is fixed. In FIG. 1, reference numeral 1 denotes a rear spoiler as a resin molded product. In this embodiment, a case where the spoiler 1 is attached to a trunk lid 2 of a vehicle K will be described as an example. .

The rear spoiler 1 is an integrally formed product made of a synthetic resin, for example, PP (polypropylene) or ABS.
Resin (acrylonitrile, butadiene, styrene resin)
It forms a hollow structure by molding.

As shown in FIGS. 2 and 3, a clip member 4 is integrally embedded in a mounting surface 1A formed on the rear spoiler 1. As shown in FIGS. 4 and 5, the clip member 4 has a substrate portion 5 and a support plate 7 which is formed to fall from the substrate portion 5 via a wall 6 and is bent in an L-shape. A fitting groove 9 for holding the fixing member 8 is formed between the portion 5 and the support plate 7. The board portion 5 protrudes forward from the support plate 7 in an eaves shape, and has a flange portion protruding from the falling wall 6 of the support plate 7 on both sides of the protrusion 5A.
Forming 10.

The fixing member 8 has a flange 11, as shown in FIG.
A bolt 13 is connected in a stepped manner as a fixing portion, and a U-shaped guide groove 15 through which the shaft portion 12 is inserted is formed in the support plate 7 holding the fixing member 8.

On the back side of the substrate portion 5, the flange portion is provided.
A projection claw 17 is formed at the front end of the projection 11 to be locked,
A pair of left and right stoppers 18 and 18 that engage with the shaft 12 protrude from the inner edge of the guide groove 15 so as to face each other.
The fixing member 8 inserted into the fitting groove 9 is retained by the stopper 7 and the stopper portions 18 to prevent the fixing member 8 from coming off. A chamfer 7A is formed at the upper edge of the support plate 7 so as to guide the flange 11 of the fixing member 8.

The clip member 4 fixed to the mounting surface 1A of the rear spoiler 1 is formed of the same material as the rear spoiler 1, that is, a synthetic resin such as PP (polypropylene) or ABS resin (acrylonitrile / butadiene / styrene resin). However, the clip material 4 has a higher melting point than the rear spoiler 1.

Next, a method of forming the clip member 4 and the rear spoiler 1 will be described. The clip material 4 is molded in a step different from that of the rear spoiler 1 by an appropriate molding means such as injection molding. On the other hand, the rear spoiler 1 having a hollow structure is formed by blow molding. That is, a resin (parison) previously formed into a tube shape is inserted into a blow molding die, heated and softened, and then air is blown into the inside to blow-mold into a mold cavity shape. At this time, the clip member 4 is inserted into the mounting surface 1A of the rear spoiler 1 by incorporating the clip member 4 into the blow molding die. That is, although the clip material 4 is molded of the same synthetic resin as the rear spoiler 1, the melting point of the clip material 4 is higher than that of the rear spoiler 1. Therefore, when the rear spoiler 1 is blow molded, the clip material 4 does not melt or soften. Thereby, as shown in the cross-sectional views of FIGS. 6 and 7, the softened resin wraps around the periphery of the clip 4. After this, the softened resin hardens,
Two sets of clip members 4 are integrally embedded in the mounting surface 1A of the rear spoiler 1. That is, by embedding the clip material 4 in the mounting surface 1A of the rear spoiler 1, a concave portion 20 is formed in the mounting surface 1A of the rear spoiler 1, and the concave portion 20 is formed.
The clip material 4 is insert-molded therein. Here, at the time of molding the rear spoiler 1, the curved portion 20 </ b> A is formed on the inner peripheral surface of the concave portion 20 by softening the softened resin around the periphery of the substrate portion 5 in a curved shape. Also, since the base portion 5 of the clip material 4 to be insert-molded into the rear spoiler 1 is formed with a flange portion 10 on both sides of the base portion 5 so as to protrude from the falling wall 6 of the support plate 7, FIG. As shown in (1), the clip material 4 inserted into the rear spoiler 1 is prevented from coming off by the flange 10 biting into the resin, and the rear spoiler 1 and the clip material 4 can be firmly integrated. In addition, as shown in FIG. 9 and FIG.
When the rear spoiler 1 is blow-molded, the resin A softened when the rear spoiler 1 is blow-molded by forming the curved guide portions 22 on both sides of the flange portion 10 by making the cross-sectional shape of the substrate portion 5 and the flange portion 10 that prevent the rear spoiler from falling into a flat elliptical shape. Flows along the curved surface 23 of the substrate portion 5 and the flange portion 10, so that the softened resin A can surely flow around the back surface side of the flange portion 10. In addition to the tapered surfaces 24 and 25 formed at the upper and lower edges of the flange 10 as shown in FIG. By forming trapezoidal guide portions 26 at both ends of the flange portion 10, the resin A in the softened state is tapered by the guide portion 26 at the time of blow molding of the rear spoiler 1, similarly to the above-described curved guide portion 22. It can be wrapped around the back side of the flange 10 along the surfaces 24 and 25.

In this embodiment constructed as described above, the fixing member 8 can be easily positioned and held on the clip member 4 by integrally insert-molding the clip member 4 on the rear spoiler 1. That is, the flange portion 11 of the fixing member 8 is slid into the concave portion 20 formed on the mounting surface 1A of the rear spoiler 1. At this time, as shown in FIG.
A curved surface 20A is formed on the inner peripheral surface of the concave portion 20, and a curved chamfered portion 7A is formed on the top edge of the front end of the support plate 7, so that the curved surface 20A and the chamfered portion 7A fix the surface. Since the flange portion 11 of the member 8 is guided into the fitting groove 9 of the clip member 4, the work of positioning the fixing member 8 and the fitting groove 9 is easy, and thus the flange portion 11 is formed.
By sliding the fixing member 8 in a state where the fitting member 9 and the fitting groove 9 are aligned, the flange portion 11 of the fixing member 8 fits into the fitting groove 9 of the clip member 4 and the shaft portion of the fixing member 8 12 fits into a guide groove 15 formed in the support plate 7.
Further, a stopper 18 is formed in the guide groove 15 into which the shaft 12 is inserted. When the fixing member 8 is slid and the shaft 12 gets over the stopper 18, the stopper 18
Is stopped. At the same time, the projecting claws 17 formed on the substrate portion 5 are locked on the front surface of the flange portion 11, and these projecting claws are
The fixing member 8 is held by the 17 and the stopper portion 18 without loosening with respect to the clip material 4. With the fixing member 8 set in the rear spoiler 1 in this way, the fixing member 8 assembled to the rear spoiler 1 is inserted into the mounting hole 2A formed in the trunk lid 2, and the nut 30 is screwed into the bolt 12 of the fixing member 8, and By turning and tightening the nut 30, the rear spoiler 1 is fixed to the trunk lid 2 as shown in FIG.

As described above, in this embodiment, the work of assembling the fixing member 8 to the rear spoiler 1 is extremely easily performed by integrally insert-molding the clip member 4 holding the fixing member 8 to the rear spoiler 1. be able to. The fixing member 8 fitted in the fitting groove 9 is engaged with the stopper portion 18 formed in the guide groove 15 of the support plate 7 by the shaft portion 12 of the fixing member 8 and the flange portion 11 of the fixing member 8 is The fixing member 8 is locked to the clip member 4 by the stopper portion 18 and the protrusion claw 17 so as to prevent the fixing member 8 from coming off. As a result, the fixing member 8 assembled to the rear spoiler 1 can be accurately positioned and held without rattling, and the positional accuracy of the fixing member 8 can be improved.

Further, since the fixing member 8 assembled to the rear spoiler 1 is merely engaged with the stopper portion 18 and the projection claw 17, the fixing member 8 is pulled out from the fitting groove 9 so that the rear spoiler 1 The fixing member 8 can be easily removed from the device. For this reason, when recycling the rear spoiler 1, when recycling the rear spoiler 1, before the rear spoiler 1 is crushed,
And the fixing member 8 made of a metal material can be completely separated, and the step of separating different materials can be omitted in the recycling step. Moreover, the clip material 4 insert-molded in the rear spoiler 1 has a higher melting point than the rear spoiler 1 but is molded from the same synthetic resin as the rear spoiler 1. Therefore, by heating the rear spoiler 1 at a temperature higher than the melting point of the clip material 4, Even if the clip material 4 and the rear spoiler 1 are melted, different resins do not mix with each other, so that recycling can be further facilitated. That is, in the case of a composite material composed of different resin materials, it is necessary to separate each resin material after grinding in recycling, but in this embodiment, the resin material is separated after grinding by unifying the rear spoiler 1 with the same material. Since there is no need to perform this process, even if the resin is melted, no different resin is mixed, so that the recycling process can be greatly simplified. At the same time, the quality of the resin finally regenerated through the melting step can be maintained, and it is extremely excellent in recyclability.

The base 5 is provided with a flange 10 which protrudes from the falling wall 6 of the support plate 7 so as to form a flange.
10 can bite into the rear spoiler 1 to prevent the clip member 4 from coming off, and the rear spoiler 1 and the clip member 4 can be firmly integrated. Further, the cross-sectional shape of the flange portion 10 is formed into a flat elliptical shape to form curved guide portions 22 on both sides of the flange portion 10, or tapered surfaces 24, 25 are formed on upper and lower edges of the flange portion 10. When the rear spoiler 1 is molded, the softened resin A can be reliably wrapped around the back surface of the flange 10 by forming the guide portion 26 having a trapezoidal shape at both ends of the flange 10.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments.
Various modifications can be made within the scope of the present invention.
For example, the structure having the bolts 12 as the fixing member 8 is shown. However, as a configuration of the fixing member 8, for example, as shown in FIG. As shown in FIG. 13, a structure having a resilient hook 36 may be used, and the structure of the fixing member 8 may be appropriately selected. Further, in the above-described embodiment, the example in which the rear spoiler is fixed to the trunk lid is shown.However, the rear spoiler may be fixed to the tailgate of a hatchback car. It is widely applicable to resin molded products to be formed. Further, in the above-described embodiment, an example in which the rear spoiler is formed by blow molding is shown. However, the present invention is not limited to blow molding, and may be, for example, injection molding. The molding method may be appropriately selected.

[0027]

According to the mounting structure of the resin molded product of the present invention, a clip member for holding a fixing member made of a different material is provided on the mounting surface of the resin molded product. A substrate portion fixed to the surface, and a support plate formed by bending the substrate portion into an L-shape and facing the substrate portion, and the fitting for holding the fixing member between the substrate portion and the support plate Since the grooves are formed, the support plate is formed with a guide groove for inserting the fixing portion of the fixing member,
The fixing member can be easily removed from the clip material as needed. Therefore, it is possible to easily disassemble the resin molded product and the fixing member made of a different material such as a metal, so that a step for separating the different material can be omitted at the time of recycling.

According to a second aspect of the present invention, in the mounting structure for a resin-molded article according to the first aspect, the base portion is provided with a projection claw which is engaged with a front edge of the fixing member. Since the fixing member is formed, when the fixing member is assembled to the clip material, the fixing member can be prevented from coming off by the projection claws.

According to the third aspect of the present invention, in the mounting structure for a resin molded product according to the first or second aspect, the stopper portion for restricting the fixed portion from coming off at the inner edge of the guide groove. The fixing member is reliably prevented from coming off by the stopper portion.

According to the mounting structure for a resin molded product according to claim 4 of the present invention, in the mounting structure for a resin molded product according to any one of claims 1 to 3, a recess is formed in the mounting surface.
The base portion of the clip material is embedded in the bottom of the concave portion, and the curved surface reaching the substrate portion is formed on the inner peripheral surface of the concave portion. Guided along the curved surface of the concave portion, the positioning work between the fixing member and the clip material is easy.

According to the method for molding a resin molded product of the present invention, the resin molded product and the clip material holding the fixing member are formed of the same material made of a synthetic resin, and the clip material is formed of the resin material. It is formed of a synthetic resin having a melting point higher than that of the molded product, and when the resin molded product is molded, the substrate portion of the clip material is insert-molded on the mounting surface of the resin molded product. Since the materials are molded of the same synthetic resin, different resin materials are not mixed even if the resin is crushed. Therefore, it is not necessary to separate different kinds of resin materials after the pulverization, so that the recyclability is excellent and the quality of the resin to be melted and regenerated can be maintained.

According to the method of molding a resin molded product of the sixth aspect of the present invention, in the method of molding a resin molded product of the fifth aspect, a flange is formed at an outer edge of the substrate portion to project outward. Since the flange extending from the substrate bites into the resin molded product, the clip material is firmly integrated without falling off the resin molded product.

According to the method of molding a resin molded product of claim 7 of the present invention, in the method of molding a resin molded product of claim 5 or 6, the synthetic resin in a molten or softened state is molded at the time of molding the resin molded product. Since the curved or tapered guide portion is formed at least on both side edges of the flange portion so as to be guided to the back side of the flange portion, at the time of molding a resin molded product,
The resin in a molten or softened state can be reliably wrapped around the flange portion to the back surface side.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a mounted state of a rear spoiler showing one embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a mounted state of the rear spoiler.

FIG. 3 is a perspective view of the rear spoiler as viewed from below, showing a mounting state of the clip member.

FIG. 4 is a perspective view of the clip member.

FIG. 5 is a bottom view of the clip member showing a state where the fixing member is assembled.

FIG. 6 is a cross-sectional view showing a state in which the fixing member is assembled to the clip member, showing a state before the fixing member is assembled.

FIG. 7 is a cross-sectional view showing a state where the fixing member is assembled to the clip member, and shows a state after the fixing member is assembled.

FIG. 8 is a sectional view taken along the line AA of FIG. 7;

FIG. 9 is a cross-sectional view of a clip member showing a modified example of the above flange portion, and shows a direction in which resin flows before molding.

FIG. 10 is a cross-sectional view of the clip member showing a state after molding.

FIG. 11 is a cross-sectional view of a clip member showing another modification of the above flange portion.

FIG. 12 is a perspective view showing a case where a nut is used as the fixing member.

FIG. 13 is a perspective view showing a case where an elastic hook is used as the fixing member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rear spoiler 1A Mounting surface 4 Clip material 5 Substrate part 7 Support plate 8 Fixing member 9 Fitting groove 10 Flange part 12 Shaft part 12 Bolt (fixing part) 15 Guide groove 17 Projection claw 18 Stopper part 20 Recess 20A Curved part 22,26 Guide 35 Nut (fixed part) 36 Hook fired (fixed part)

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3J022 DA18 EA17 EB06 ED06 ED22 FA05 FB03 FB05 FB12 FB16 HA03 HB02 HB06 4F206 AA11 AA13 AD05 AH17 JA07 JB12 JN11 JQ81 4F208 AA11 AA13 AD05 AH12 LA01

Claims (7)

[Claims] 1. A clip member for holding a fixing member made of a different material is provided on a mounting surface of a resin molded product, and the clip material is formed into an L-shape from a substrate portion fixed to the mounting surface. A support plate opposed to the substrate portion formed to be bent, and a fitting groove for holding the fixing member is formed between the substrate portion and the support plate; and a fixing portion of the fixing member is formed on the support plate. A mounting structure for a resin molded product, wherein a guide groove to be inserted is formed. 2. A mounting structure for a resin molded product according to claim 1, wherein a projection claw is formed on said substrate portion to be engaged with a front edge of said fixing member. 3. A mounting structure for a resin molded product according to claim 1, wherein a stopper portion is formed at an inner edge of the guide groove so as to prevent the fixed portion from coming out. 4. A concave portion is formed in the mounting surface, a substrate portion of a clip material is embedded in a bottom portion of the concave portion, and a curved surface reaching the substrate portion is formed on an inner peripheral surface of the concave portion. The mounting structure of the resin molded product according to claim 1. 5. A resin molded product and a clip material for holding a fixing member are formed of a synthetic resin made of the same material, and the clip material is formed of a synthetic resin having a melting point higher than that of the resin molded product. A method of molding a resin molded product, comprising, at the time of molding a product, insert-molding a substrate portion of the clip material on a mounting surface of the resin molded product. 6. The method for molding a resin molded product according to claim 5, wherein a flange protruding outward is formed on an outer edge of said substrate portion. 7. A curved or tapered guide portion is formed on at least both side edges of the flange portion so as to guide a synthetic resin in a molten or softened state to the back side of the flange portion during molding of the resin molded product. The method for molding a resin molded product according to claim 5 or 6, wherein: