JP2016047614A - Resin panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent generation of a weld on a surface region of a resin panel, even when an engaging hole is provided.SOLUTION: An assembly part 3 of a fender panel 1 comprises: an opening 4 for assembly for exposing a rear face of a winker panel to a rear side of the fender panel 1; and an edge part 5 for assembly on which an outer peripheral part of the winker panel is overlapped. Plural engaging holes 6 into which, engaging pieces for fixing the winker panel to the assembly part 3 are inserted for engaging, are formed on the edge part 5 for assembly. Out of the engaging holes 6, at least the engaging hole 6 having a surface region of the fender panel 1 on a downstream side to a flow 10 of molten resin from a gate for injection molding, has a notch 7 connected to the opening 4 for assembly.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a resin panel that is made of an injection-molded product and has an assembly part on which another part is assembled on the surface side.

  Conventionally, most of automobile bodies have been made of metal except for some parts such as bumpers, but in recent years many parts are made of resin molded products that are lighter than metal and can be molded into complex shapes. It has been made up.

  Since resin molded products are molded by pouring molten resin into a mold, the occurrence of welds that occur during molding may be a problem.

  Therefore, for example, as in Patent Document 1, a continuous resin reservoir is provided in the cavity so as to forcibly disturb the orientation of the resin or filler in the weld portion generated downstream of the core of the molten resin flow from the gate. I have to.

JP-A-5-285990

  However, in the method as disclosed in Patent Document 1, it is necessary to provide an extra resin reservoir in the mold to prevent welds, and it is necessary to cut the resin reservoir gate from the resin panel after molding. There is a problem that the appearance deteriorates.

  This invention is made | formed in view of this point, The place made into the objective is to prevent a weld from being produced in the surface area | region of a resin panel even if an engagement hole is provided.

  In order to achieve the above object, in the present invention, a notch for dividing the flow of the molten resin is provided in the assembly opening.

Specifically, in the first invention, the resin panel is made of an injection-molded product, and has a mounting part on which another part is assembled on the surface side,
In the assembly section above,
An assembly opening for exposing the back surface of the separate part to the back side of the resin panel;
An assembling edge portion on which the outer peripheral portion of the above-mentioned another part is superimposed,
In the assembly edge,
A plurality of engagement holes for inserting and locking engagement pieces for fixing the separate parts to the assembly part are formed,
Of the engagement holes, at least an engagement hole having a surface region of the resin panel on the downstream side with respect to the flow of the molten resin from the injection molding gate is provided with a notch portion connected to the assembly opening. ing.

  According to the above configuration, by merely providing a cutout portion connected to the assembly opening in the engagement hole, the flow of the molten resin is divided to prevent the generation of welds that may occur due to merging on the downstream side of the engagement hole. Can do. For this reason, it is not necessary to provide an extra structure such as a resin reservoir in the mold, and the occurrence of welds can be easily prevented.

In the second invention, in the first invention,
The engagement hole is
A locking side that is locked by an engaging claw provided on the engaging piece;
It is provided in a rectangular shape having a positioning side that faces the locking side and a positioning portion provided on the engagement piece contacts.
In the engagement hole provided with the notch, the positioning side faces the assembly opening, and the notch is connected to an intermediate portion of the positioning side.

  According to the above configuration, even if the notch portion is provided, the positioning side, the locking side, and the side continuous to these and the engagement piece are firmly fixed to prevent a decrease in rigidity as much as possible. Even if force is applied in the locked state, another part will not come off.

In the third invention, in the first or second invention,
It is an exterior member that constitutes the exterior of an automobile, and the separate part is a cover that is assembled to the exterior member.

  According to said structure, with a simple structure, a weld can be prevented and the external appearance of an exterior member can be improved, and the attachment strength of a cover can also be maintained.

  As described above, according to the present invention, the engagement hole having the surface region of the resin panel on the downstream side with respect to the flow of the molten resin from the injection molding gate is provided with the notch portion connected to the assembly opening. Accordingly, it is possible to prevent the weld from being generated in the surface region of the resin panel even if an engagement hole necessary for assembling another part is provided.

It is the front view which expanded the I section of FIG. It is a front view which expands and shows a part of fender to which the winker panel was attached. It is a disassembled perspective view which expands and shows the attachment structure of a blinker panel. It is the IV-IV line expanded sectional view of FIG. It is the VV line expanded sectional view of FIG. It is a front view which shows a fender panel. FIG. 2 is a view corresponding to FIG. 1 according to a comparative example.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIGS. 1-6 shows the fender panel 1 as a resin panel of embodiment of this invention, and this fender panel 1 is an exterior member which comprises the external appearance of the left side of a motor vehicle, for example. The fender panel 1 is made from an injection molding gate 30 provided at a tire arch molding portion of a mold fender panel 1 (not shown) made of molten resin such as polypropylene, polycarbonate / acrylonitrile / butadiene / styrene, polycarbonate / polybutylene terephthalate, nylon, or the like. It consists of an injection-molded product that is molded by injection, and has an assembly part 3 to which a turn signal panel 2 as a separate part (cover) is assembled on the surface side. The winker panel 2 is formed by attaching a winker 22 including components such as a lamp to a winker panel main body 21 made of a resin molded product such as polypropylene, acrylonitrile / butadiene / styrene, polycarbonate / acrylonitrile / butadiene / styrene. On the back surface side of the winker panel main body 21, a plurality of engagement pieces 23 are projected. An engagement claw 24 is provided on the pair of leg portions 25 of the engagement piece 23 so as to be appropriately deformable. On both sides of the pair of leg portions 25, ridges 26 that gradually spread toward the front side are formed. For example, the engaging piece 23 is integrally formed with the winker panel main body 21.

  The assembly portion 3 is formed with an assembly opening 4 for exposing the back surface of the winker panel 2 to the back side of the fender panel 1. Specifically, the assembly opening 4 is formed to penetrate to an appropriate shape and size so that a harness extending from the turn signal 22 (not shown) to the back side is inserted into the vehicle body through the assembly opening 4. . In the present embodiment, the assembly opening 4 has a rounded pentagonal shape, but the shape is not particularly limited.

  An assembly edge 5 that is one step lower than the surroundings is formed at the periphery of the assembly opening 4. A flat assembling surface of the outer peripheral portion of the winker panel 2 is superposed on the assembling edge portion 5.

  The assembling edge 5 is formed with a plurality of substantially rectangular engaging holes 6 into which engaging pieces 23 for fixing the winker panel 2 to the assembling part 3 are inserted and locked.

  The engaging hole 6 of this embodiment includes a locking side 6a that is locked by the engaging claw 24 provided in the engaging piece 23, and a positioning portion 27 that is provided in the engaging piece 23 so as to face the locking side 6a. Is provided in a rectangular shape having a positioning side 6b that abuts. Of these engagement holes 6, at least the engagement hole 6 having the surface region of the fender panel 1 on the downstream side with respect to the molten resin flow 10 (shown in FIGS. 1 and 6) from the injection molding gate 30 (see FIG. 1). 1 is provided with a notch 7 connected to the assembly opening 4. The notch 7 is connected to the center of the positioning side 6b of the engagement hole 6 in which the notch 7 is provided. In this embodiment, the notch 7 is formed in a straight line having a constant width L2 toward the engagement hole 6, but may have other shapes such as becoming wider or narrower toward the engagement hole 6. . Further, the width L2 of the notch 7 is set to a size that allows the core to be formed on the mold and does not reduce the rigidity around the engagement hole 6 with respect to the length L1 of the locking side 6a. . The depth of the notch 7 is set to an appropriate size so as not to lower the rigidity around the engagement hole 6. In the present embodiment, the notch portion 7 is provided at the center of the positioning side 6b, but it may be provided at a position shifted to the left or right.

  Next, the effect | action of the notch part 7 which concerns on embodiment of this invention is demonstrated.

  As shown in FIG. 7, the engagement hole 106 of the fender panel 101 is not provided with the notch 7. When molding the fender panel 101, the molten resin flow 110 injected from the injection molding gate 30 is divided on both sides of a core (not shown) corresponding to the engagement hole 106.

  Then, it is inevitable that the weld 108 is generated by the molten resin once divided and joined to both sides of the engagement hole 106. Thereby, an external appearance deteriorates or intensity | strength becomes weak. In the fender panel 101, such a weld 108 appears in the appearance, which leads to deterioration in quality.

  On the other hand, according to the embodiment of the present invention, the notch 7 connected to the assembly opening 4 is provided in the engagement hole 6, so that the melting is divided on both sides of the engagement hole 106 as shown in FIG. 7. One of the resin flows 10 (the lower side in FIG. 7) is completely divided by the notch 7 (the core forming the notch 7 not shown) and engaged as in the molten resin flow 10 shown in FIG. The flow goes around the hole 6 counterclockwise. Therefore, the weld 108 as shown in FIG. 7 does not occur on the downstream side of the engagement hole 6. For this reason, the fender panel 1 of the present embodiment has a good appearance and does not deteriorate in strength. In addition, in the other engagement holes 6, the downstream side with respect to the flow 10 of the molten resin is in the assembling edge 5 and is hidden by the winker panel main body 21, so that even if some weld 108 is generated, the appearance is improved. Does not get worse. Therefore, it is not necessary to provide an extra structure such as a resin reservoir in the mold, and it is possible to easily prevent the occurrence of the weld 108 that impairs the appearance of the fender panel 1.

  As shown in FIGS. 3 to 5, when the winker panel 2 is assembled to the assembling portion 3 after molding, the engaging claw 24 is pressed against the locking side 6 a and the positioning portion 27 of the engaging piece 23 is positioned on the positioning side. 6b is contacted and positioned. Thus, even if the notch 7 is provided, the positioning side 6b, the locking side 6a, and the pair of left and right opposing sides and the engagement piece 23 are firmly fixed to prevent a reduction in rigidity as much as possible. Therefore, even if a force is applied to the fender panel 1 with the engaging claw 24 locked, the winker panel 2 does not come off.

  Furthermore, since the resin panel of the present embodiment is the fender panel 1 that is an exterior member that constitutes the appearance of the automobile, and the other part is the winker panel 2 that can be assembled to the fender panel 1, a simple appearance and a beautiful appearance without the weld 108 And the mounting strength of the winker panel 2 can be maintained.

  Therefore, according to the fender panel 1 according to the present embodiment, the assembly opening 4 is formed in the engagement hole 6 having the surface region of the fender panel 1 on the downstream side with respect to the flow 10 of the molten resin from the injection molding gate 30. By providing the notch 7 to be connected, it is possible to prevent the weld 108 from being generated in the surface region of the fender panel 1 even if the engagement hole 6 is provided in the assembling edge 5.

(Other embodiments)
The present invention may be configured as follows with respect to the above embodiment.

  That is, in the above-described embodiment, the resin panel is the automobile fender panel 1 and the separate part is the winker panel 2. However, the present invention is not limited to this, for example, a hood panel or a quarter panel in which a garnish panel is assembled as a separate part. Even so, the present invention is applicable.

  In the said embodiment, although the shape of the engagement hole 6 is made into the rectangular shape, it is not limited to this, If it is a shape which has a part corresponding to the latching edge 6a and the positioning edge 6b, other polygon and long It may be circular.

  In addition, the above embodiment is an essentially preferable illustration, Comprising: It does not intend restrict | limiting the range of this invention, its application thing, or a use.

1 Fender panel (resin panel, exterior member)
2 Blinker panel (separate parts, cover)
3 assembly section
4 Opening for assembly
5 Edge for assembly
6 engagement hole
6a Locking side
6b Positioning side
7 Notch
10,110 Flow of molten resin
21 Blinker panel body
22 Turn signal
23 Engagement piece
24 engaging claw
25 legs
26 ridges
27 Positioning part
30 Gate for injection molding 108 Weld

Claims (3)

A resin panel (1) comprising an injection-molded product and having an assembly part (3) on the surface side where another part (2) is assembled,
In the assembly part (3),
An assembly opening (4) for exposing the back surface of the separate part (2) to the back side of the resin panel (1);
An assembly edge (5) on which the outer peripheral part of the separate part (2) is superimposed,
The assembly edge (5)
A plurality of engagement holes (6) for inserting and locking the engagement pieces (23) for fixing the separate part (2) to the assembly part (3) are formed,
Of the engagement holes (6), at least the engagement hole (6) having the surface region of the resin panel (1) on the downstream side with respect to the flow (10) of the molten resin from the injection molding gate (30). Has a notch (7) connected to the assembly opening (4). In the resin panel (1) according to claim 1,
The engagement hole (6)
A locking side to which an engaging claw provided on the engaging piece (23) locks;
It is provided in a rectangular shape having a positioning side (6b) on which the positioning portion (27) provided on the engagement piece (23) abuts against the locking side,
The engaging hole (6) provided with the notch (7) has the positioning side (6b) facing the assembly opening (4), and a notch ( 7) Resin panel characterized by being connected. In the resin panel (1) according to claim 1 or 2,
A resin panel, which is an exterior member constituting an exterior of an automobile, and wherein the separate part (2) is a cover assembled to the exterior member.

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