Vehicle cover device and resin molding die for molding base material of vehicle cover device

Abstract

To enhance the quality of a vehicle cover device and ensure the durability of a resin molding die.SOLUTION: A vehicle cover device 10 includes a base material 20 which is made of an integrally molded article of resin and a decorative article 30 which is attachable to the base material 20. The base material 20 comprises a fixation part 40 with an H-shaped cross-section which is composed of a pair of plate members 41, 41 that have the plate shape and face each other with a gap D1, and a mounting seat 42 that connects the pair of plate members 41, 41. The pair of plate members 41, 41 integrally has a pair of plate-shaped protrusions 43, 43 protruding from the respective one ends 41a, 41a toward the direction in which they face each other. The decorative article 30 integrally has a fixed part 31 that can be fit to a portion between tips 43a, 43a of the pair of protrusions 43, 43. The fixed part 31 is fit to a portion between the tips 43a, 43a of the pair of protrusions 43, 43 and fastened to the mounting seat 42 by a fastening member 45.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a vehicle cover device and a resin molding die for molding a base material of the vehicle cover device. [Background technology]

[0002] Many vehicles, such as passenger cars, are provided with various types of vehicle cover devices. These vehicle cover devices cover the exterior and interior of the vehicle body. One example of a vehicle cover device is a configuration in which a grill garnish is attached to a radiator grill (a type of base material). A conventional technique related to a vehicle cover device is disclosed in Patent Document 1 (see Figs. 2 and 7).

[0003] The vehicle cover device shown in Patent Document 1 includes a resin radiator grill (corresponding to a base material) for taking in wind generated while the vehicle is moving into a radiator mounted at the front of the vehicle body. A band-shaped resin grill garnish (corresponding to a decorative item) is attached to the front of the radiator grill with screws. The grill garnish has a boss (corresponding to a fixed portion) protruding from the back surface toward the radiator grill.

[0004] The cross-sectional shape of the portion of the radiator grill where the boss is attached (corresponding to the fixing portion) is approximately M-shaped. Specifically, the fixing portion is integrally formed by a pair of vertical plate members facing each other with a gap therebetween, and a connecting member with a substantially U-shaped cross section located between the plate members and connecting the front ends of the plate members. The connecting member is formed by a pair of vertical connecting plates extending from the front ends of the plate members toward the rear ends while approaching each other, and a horizontal mounting seat connecting the rear ends of the connecting plates. The inclination angle of the connecting plates relative to the plate members is an acute angle. The boss inserted between the pair of connecting plates is fastened to the mounting seat with a screw, whereby the grill garnish can be attached to the front surface of the radiator grill. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2004-352136 A Summary of the Invention [Problem to be solved by the invention]

[0006] Generally, in the configuration of a vehicle cover device as shown in Patent Document 1, the relationship between the radiator grille and the grill garnish is set in consideration of the overall design of the vehicle. For example, the grill garnish is often set to a size that does not protrude from the radiator grille when viewed from the front of the vehicle. In other words, the spacing between the pair of plate members in the fixing portion of the radiator grille is set in consideration of the functionality and design of the radiator grille. The width of the grill garnish is set to be the same as or smaller than the spacing between the pair of plate members of the fixing portion. The shape and size of the bosses formed on the grill garnish are set to match the grill garnish.

[0007] If the width of the grill garnish is narrow compared to the distance between the pair of plate members, it is necessary to take measures to ensure that there are no gaps between the edges of the plate members and the grill garnish when the vehicle is viewed from the front, otherwise the mounting bases of the fixing parts will be visible through the gaps.

[0008] The radiator grille of Patent Document 1 has a pair of vertical connecting plates that extend from the front end to the rear end of each of the pair of plate members while approaching each other, making it impossible to visually see the mounting seat from the front of the vehicle. However, the inclination angle of the connecting plates relative to the plate members is small. In this case, in order to mold the narrow space (small space) between the plate members and the connecting plates with resin, it is necessary to make the thickness of the mold (space forming portion) for the portion that forms this small space extremely thin. The pressure inside the mold when filling the small space with molten resin places a large load on the space forming portion. If this continues, it is disadvantageous in ensuring the durability of the space forming portion of the mold.

[0009] One approach to this problem is to seal the small space between the plate member and the connecting plate by molding the resin as a single piece. However, this would result in unnecessary thickness (waste material). This waste material can cause "sink marks" to appear on the design surface of the radiator grille due to shrinkage caused by the resin hardening during molding, so it is disadvantageous in terms of improving the quality of the radiator grille.

[0010] An object of the present disclosure is to provide a technique that can improve the quality of a vehicle cover device and ensure the durability of a resin molding die. [Means for solving the problem]

[0011] According to the present invention, firstly, a decorative item includes a base material made of an integrally molded resin product having an H-shaped cross section formed by a pair of plate-shaped plate members facing each other with a gap therebetween and a mounting seat connecting the pair of plate members, and a decorative item that can be attached to the base material, The pair of plate members each have a pair of plate-shaped protruding portions that protrude from one end of the pair of plate members in directions facing each other, the ornament has an integral fixed portion that can be fitted between the tips of the pair of protruding portions, The fixed portion is fitted between the tip ends of the pair of protrusions and fastened to the mounting seat by a fastening member, thereby providing a vehicle cover device.

[0012] Secondly, preferably, in the vehicle cover device described in claim 1, the fixed part has an integral locking part protruding from a side surface of the fixed part, and the mounting seat has a retaining hole capable of temporarily holding the locking part when the fixed part is fitted between the tips of the pair of protruding parts.

[0013] Thirdly, preferably, in the vehicle cover device described in paragraphs 1 and 2, the decorative item has a belt-like shape with a U-shaped cross section, one end of the decorative item has the fixed portion and the other end of the decorative item has a hook piece, and the base material has a hook portion capable of hooking the hook piece.

[0014] According to the present invention, fourthly, a base material is an integrally molded resin product, the base material being configured with a pair of plate-shaped plate members facing each other with a gap therebetween and a mounting seat connecting the pair of plate members to each other, with an H-shaped cross section, and including a fixing portion including a pair of plate-shaped protrusions protruding in directions facing each other from one end of each of the pair of plate members, a pair of spaces defined by the pair of plate members, the mounting seat, and the pair of protrusions, and an extension plate extending from one end of the mounting seat in a direction along the plate surfaces of the pair of plate members and the seat surface of the mounting seat toward the pair of protrusions; A decorative item that can be attached to the base material; A resin molding die for molding the base material of a vehicle cover device comprising: a slide mold that is movable in a direction along plate surfaces of the pair of plate members and a seat surface of the mounting seat to form the pair of spaces, a fixed mold that is used to form the remaining portion of the base material, and a movable mold that is openable and closable relative to the fixed mold, The fixed type has a partition surface that separates the pair of spaces, the slide mold has a slide base and a pair of space forming protrusions provided on the slide base for forming the pair of spaces, The pair of space forming protrusions are positioned so as to be able to come into contact with the partition surface of the fixed mold when the movable mold is clamped to the fixed mold.

[0015] Fifthly, preferably, the resin molding die according to the fourth aspect, The extension plate of the base material has a through hole, the slide mold has a hole forming protrusion provided on the slide base for forming the through hole, The pair of space forming protrusions are set to be longer than the hole forming protrusions. Effect of the Invention

[0016] The present invention can provide a technique that can improve the quality of a vehicle cover device and ensure the durability of a resin molding die. [Brief description of the drawings]

[0017] [Figure 1] 1 is a front view of a vehicle cover device according to an embodiment. [Diagram 2] FIG. 2 is a cross-sectional view taken along the line indicated by the arrows 2-2 in FIG. [Diagram 3] FIG. 3 is a cross-sectional view taken along the line indicated by the arrows 3-3 in FIG. [Figure 4] FIG. 4 is an enlarged view of part 4 in FIG. 3. [Diagram 5] 5 is a cross-sectional view taken along the line indicated by the arrows 5-5 in FIG. 4. [Figure 6] 6 is an exploded view of the fixing portion of the grille member and the fixed portion of the decorative item shown in FIG. 5. FIG. [Figure 7] 7A is a view of the grill member shown in FIG. 4 as seen in the direction of an arrow 7A, and FIG. 7B is a view of the grill member shown in FIG. 4 as seen in the direction of an arrow 7B. [Figure 8] 8A is a diagram for explaining the intermediate state of assembling the fixed part to the fixing part shown in FIG. 4, and FIG. 8B is a diagram for explaining the completed state of assembling the fixed part to the fixing part shown in FIG. 8A. [Figure 9] 9A is a cross-sectional view of a portion of the resin molding die for molding the grill member shown in FIG. 4 that molds the periphery of the fixed portion, and FIG. 9B is a cross-sectional view taken along the line indicated by arrows 9B-9B in FIG. 9A. [Figure 10] FIG. 9B is a cross-sectional view taken along the line indicated by the arrows 10-10 in FIG. 9A. [Figure 11] FIG. 11 is a cross-sectional view of the resin molding die shown in FIG. 10 in an open state. [Figure 12] 12 is a perspective view showing a cross section of a part of the resin molding mold in the mold open state shown in FIG. 11. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] An embodiment of the present invention will be described below with reference to the attached drawings. Note that the embodiment shown in the attached drawings is an example of the present invention, and the present invention is not limited to this embodiment. In the description, left and right refer to left and right based on the passenger riding in the vehicle, and front and rear refer to front and rear based on the traveling direction of the vehicle. In addition, in the drawings, Fr indicates front, Rr indicates rear, Le indicates left as seen by the passenger, Ri indicates right as seen by the passenger, Up indicates up, and Dn indicates down.

[0019] <Example> The embodiment will be described with reference to the drawings.

[0020] As shown in Fig. 1, the vehicle cover device 10 covers the exterior of a vehicle body (not shown) of a vehicle such as a passenger car. As an example of the vehicle cover device 10, a configuration for covering the front part of the vehicle body will be described. However, the vehicle cover device 10 is not limited to a configuration for covering the front part of the vehicle body, and can also be applied to a configuration for covering, for example, the entire exterior of the vehicle body or the interior of the vehicle body (including the passenger compartment).

[0021] The vehicle cover device 10 includes a resin front grille 20 for drawing in wind generated when the vehicle is moving into a radiator (not shown) mounted at the front of the vehicle body, and a number of garnishes 30 arranged on the front surface 20a of the front grille 20.

[0022] The front grille 20 includes, for example, a picture frame-shaped frame 21 and a plurality of vertical strip-shaped grill members 22 arranged within the frame 21. Referring also to Fig. 2, the grill member 22 is configured to have a U-shaped (including a substantially U-shaped) cross section by a pair of plate-shaped side plates 23, 23 facing each other with a gap therebetween and a front plate 24 connecting the front ends of the pair of side plates 23, 23. Note that the front grille 20 is not limited to a configuration of only a plurality of vertical strip-shaped grill members 22, but may be, for example, only a plurality of horizontal strip-shaped grill members, or may be configured in a lattice shape by combining with a plurality of horizontal strip-shaped bars (not shown).

[0023] 1 to 3, the multiple garnishes 30 are configured, for example, in a vertical strip shape extending along the front surface 22a (front surface 24a of the front panel 24) of each vertical strip-shaped grill member 22 and overlapping the front surface 22a. The cross section of the garnish 30 is configured in a U-shape (including an approximately U-shape) similar to the cross section of the grill member 22.

[0024] The front grille 20 may be referred to as the "base material 20" or the "first cover body 20" as appropriate. The garnish 30 may be referred to as the "decoration 30" or the "second cover body 30" as appropriate.

[0025] Next, there will be explained the structure for attaching the decorative item 30 to the base material 20. Note that, in order to facilitate understanding of the explanation, the orientation of Figure 5 is the same as that of Figure 2.

[0026] As shown in Figure 4, the decorative item 30 has a boss 31 formed on its upper part. This boss 31 protrudes from the back surface 30a of the decorative item 30 towards the base material 20. The tip surface 32 of the boss 31 is configured as a flat surface, and can be attached to the base material 20. This boss 31 may be referred to as the "fixed portion 31" as appropriate.

[0027] 5 and 6, each grill member 22 of the base material 20 is provided with a fixing portion 40 for individually fixing the fixed portion 31 of each decorative item 30. These fixing portions 40 are formed integrally with the grill member 22 of the base material 20. More specifically, this fixing portion 40 is configured with an H-shaped cross section (including a substantially H-shaped cross section) and is made up of a pair of plate-shaped plate members 41, 41 facing each other with a distance D1 (see FIG. 6) between them and a plate-shaped mounting seat 42 connecting the pair of plate members 41, 41.

[0028] The pair of plate members 41, 41 can be, for example, a pair of side plates 23, 23 constituting the grill member 22 shown in FIG. 2. As shown in FIG. 6, the thickness Th of each plate member 41, 41 is constant (including approximately constant). The pair of plate members 41, 41 integrally have a pair of plate-shaped protruding portions 43, 43 protruding in the direction facing each other from one end 41a, 41a (front end 41a, 41a). The protruding amount of each of the protruding portions 43, 43 is Pa. The separation distance D2 between the tips 43a, 43a of the pair of protruding portions 43, 43 (between the protruding surfaces 43a, 43a) is the difference between the interval D1 between the plate members 41, 41 and the protruding amount Pa, Pa of each of the protruding portions 43, 43.

[0029] The mounting seat 42 is located rearward of the front surface 20a (front surface 22a of the grill member 22) of the base material 20. The front surface 42a of the mounting seat 42 may be referred to as the "seat surface 42a" as appropriate.

[0030] Furthermore, the mounting seat 42 has a through hole 44 penetrating in the plate thickness direction of the mounting seat 42. A center line CL of this through hole 44 is located at the center of the mounting seat 42 and is perpendicular to a seat surface 42a of the mounting seat 42. The tip surface 32 of the fixed portion 31 overlaps the seat surface 42a of the mounting seat 42. A screw member 45 (fastening member 45) such as a tapping screw inserted through the through hole 44 fastens the fixed portion 31 to the mounting seat 42.

[0031] Furthermore, the fixing portion 40 has a pair of spaces 46, 46 defined by the pair of plate members 41, 41, the mounting seat 42, and the pair of protrusions 43, 43.

[0032] The procedure for fixing the fixed part 31 to the fixing part 40 is as follows (see FIG. 5). The fixed part 31 of the decorative item 30 can be fitted between the tips 43a, 43a of the pair of protruding parts 43, 43 of the fixing part 40. First, the fixed part 31 is fitted between the tips 43a, 43a of the protruding parts 43, 43 from the front surface 20a side of the base material 20. Next, the tip surface 32 of the fixed part 31 is overlapped with the seat surface 42a of the mounting seat 42. As a result, the base part 30a of the decorative item 30 is positioned between the pair of protruding parts 43, 43, and the fixed part 31 is positioned between the seat surface 42a of the mounting seat 42 and the pair of protruding parts 43, 43. Finally, a screw member 45 (fastening member 45) such as a tapping screw is inserted into the through hole 44 of the mounting seat 42 from the back side of the base material 20 and screwed into the fixed part 31. This completes the fixing operation of the fixed part 31 to the fixing part 40.

[0033] 4, 7A and 7B, the pair of plate members 41, 41 of the fixing portion 40 extend in the longitudinal direction (up-down direction) of the grill member 22. When the vertical strip-shaped grill member 22 is viewed from the back side, the mounting seat 42 is configured in a rectangular shape (including a substantially rectangular shape). The rectangular mounting seat 42 has four ends 42b-42e (edges 42b-42e) around a seat surface 42a (see FIG. 6).

[0034] Of the four ends 42b to 42e of the rectangular mounting base 42, the first end 42b and the second end 42c for joining, which face each other, connect the pair of plate members 41, 41 to each other. The other two ends 42d, 42e of the mounting base 42 (the upper third end 42d and the lower fourth end 42e) are located in a direction intersecting the first end 42b and the second end 42c for joining. Plate-shaped wall panels 47, 48 each extending toward the rear surface 24b of the front panel 24 of the grill member 22 are integrally formed with the third end 42d and the fourth end 42e of the mounting base 42. The pair of wall panels 47, 48 form a part of the mounting base 42.

[0035] As shown in Fig. 4, when the base material 20 is viewed in the width direction, the mounting seat 42 is configured in a U-shape with the front side open. These wall plates 47, 48 are also integrated with the front plate 24. Of the pair of wall plates 47, 48, the upper wall plate 47 is sometimes referred to as the "first wall plate 47" and the lower wall plate 48 is sometimes referred to as the "second wall plate 48" or the "extension plate 48". In other words, as shown in Figs. 6 and 7A, the extension plate 48 extends from one end 42e in a direction (arrow R1 direction) along the plate surfaces 41b, 41b (inner surfaces 41b, 41b) of the pair of plate members 41, 41 of the mounting seat 42 and the seat surface 42a of the mounting seat 42 toward the pair of protruding parts 43, 43.

[0036] The inner wall surface 47a of the first wall plate 47 is parallel (including approximately parallel) to the center line CL of the through hole 44. The second wall plate 48 is composed of a straight plate 51 connected to the mounting seat 42 and an inclined plate 52 connected to the tip of the straight plate 51. The inner wall surface 51a of the straight plate 51 faces and is parallel (including approximately parallel) to the inner wall surface 47a of the first wall plate 47. The straight plate 51 has a rectangular through hole 53 penetrating the plate thickness. This through hole 53 may be appropriately referred to as a "holding hole 53". The inclined plate 52 extends from the tip of the straight plate 51 toward the back surface 24b of the front plate 24 while inclining in a direction away from the first wall plate 47.

[0037] The second wall plate 48 (extension plate 48) can be summarized as follows. This second wall plate 48 extends from end 42e (fourth end 42e) in a direction intersecting joining ends 42b, 42c (first end 42b and second end 42c) connecting the pair of plate members 41, 41 to the pair of protruding parts 43, 43 side (decorative item 30 side) among the four ends 42b to 42e of the mounting base 42. This second wall plate 48 has a through hole 53 (retaining hole 53).

[0038] 4, the fixed part 31 is located at the upper end of the decorative item 30. When the fixed part 31 is fastened to the mounting seat 42, the upper surface 31a (one end surface 31a) of the fixed part 31 is in contact with the inner wall surface 47a of the first wall panel 47, and the lower surface 31b (the other end surface 31b) of the fixed part 31 is spaced apart from the inner wall surface 51a of the straight plate 51 of the second wall panel 48.

[0039] Furthermore, the fixed part 31 has an integral locking part 33 protruding from the lower surface 31b facing the second wall plate 48. Referring also to FIG. 5, when the fixed part 31 is fitted between the tips 43a, 43a of the pair of protrusions 43, 43, the tip part of the locking part 33 fits into the retaining hole 53. When the upper surface 31a of the fixed part 31 is in contact with the inner wall surface 47a of the first wall plate 47, the amount of fitting (fitting depth) of the tip part of the locking part 33 into the retaining hole 53 is set to a very small value that does not allow the tip part to slip out of the retaining hole 53. Since the tip part of the locking part 33 fits into the retaining hole 53, it is possible to temporarily hold the locking part 33 against the edge of the retaining hole 53 before fastening the fixed part 31 to the fixing part 40.

[0040] As shown in FIG. 3, the ornament 30 has a hook piece 61 formed on the lower end 30b and an insertion piece 62 formed on the upper end 30c. The hook piece 61 has an L-shaped (including approximately L-shaped) cross section that extends rearward and downward (toward the base material 20) from the lower end 30b of the ornament 30. The lower end surface 61a of this hook piece 61 has a stepped (concave) configuration. The insertion piece 62 is a horizontal plate-like piece that extends horizontally from the upper end rearward (toward the base material 20). In other words, one end 30c (upper end 30c) of the ornament 30 has a fixed portion 31 and an insertion piece 62. The other end 30b (lower end 30b) of the ornament 30 has the hook piece 61. The fixed portion 31 is located closer to the insertion piece 62.

[0041] On the other hand, the base material 20 has a hook portion 63 on which the hook piece 61 can be hooked, and a horizontal recess 64 into which the insertion piece 62 can be inserted. The hook portion 63 is, for example, in the form of a through hole formed in the base material 20, and penetrates the base material 20 in the front-rear direction. A lower edge 63a of this through hole 63 (hook portion 63) is configured to have a step shape. By configuring both the lower edge 63a of the through hole 63 and the lower end surface 61a of the hook piece 61 to have a step shape, it is possible to restrict positional deviation between them in the front-rear direction.

[0042] The procedure for assembling the decorative item 30 to the grill member 22 is as follows (see FIG. 3). First, while tilting the upper end 30c of the decorative item 30 toward the front of the base material 20, the hook piece 61 on the lower end 30b of the decorative item 30 is hooked onto the hook portion 63 of the base material 20.

[0043] Next, as shown in Fig. 8A, while raising the upper part of the decorative item 30 toward the base material 20, the fixed part 31 is pushed toward the seat surface 42a of the mounting seat 42 (in the direction of arrow R11). At this time, the tip of the locking part 33 is guided by the inner wall surface 52a of the inclined plate 52, and is lifted (displaced in the direction of arrow R12). When the fixed part 31 is further pushed in after it hits the inner wall surface 47a of the first wall plate 47, the pushing force causes the tip of the locking part 33 to elastically deform the second wall plate 48 downward (in the direction of arrow R13). As a result, as shown in Fig. 8B, the tip of the locking part 33 fits into the retaining hole 53. The locking part 33 is thus provisionally retained against the edge of the retaining hole 53.

[0044] Finally, the tip surface 32 of the fixed portion 31 is placed over the seat surface 42a of the mounting seat 42, and the fixed portion 31 is fastened to the mounting seat 42 by the fastening members 45. The fastening result is shown in Figure 4. This completes the assembly of the decorative item 30 to the grille member 22.

[0045] Next, a resin molding die 100 for resin molding the substrate 20 will be described with reference to FIGS. 9A to 12. FIG.

[0046] As shown in Figures 9A, 9B and 10, the resin molding mold 100 includes a fixed mold 110, a movable mold 120 that can be opened and closed relative to the fixed mold 110, and a sliding mold 130 that can slide in a direction different from the opening and closing direction of the movable mold 120.

[0047] The fixed mold 110 constitutes a female mold (cavity) and has a molding surface 111 that mainly molds the front surface 20a of the base material 20 shown in Fig. 1. More specifically, the molding surface 111 of the fixed mold 110 is a portion for mainly molding the outer surfaces 41c, 41c of the pair of plate members 41, 41, the outer surfaces 43b, 43b (lower surfaces 43b, 43b) of the pair of protruding parts 43, 43, and the seat surface 42a of the mounting seat 42 shown in Fig. 11. A bottom surface 112 of the molding surface 111 is a portion for molding the outer surfaces 43b, 43b of the protruding parts 43, 43.

[0048] Furthermore, the fixed mold 110 has an extension portion 114 extending from the bottom surface 112 toward the opening end surface 113. A tip surface 114a of this extension portion 114 is a surface that forms the seat surface 42a of the mounting seat 42, and has a rectangular shape (including a substantially rectangular shape) in a plan view.

[0049] Among the side surfaces 114b to 114e of the extending portion 114, the first side surface 114b and the second side surface 114c facing each other are surfaces that form the protruding surfaces 43a, 43a of the protruding portions 43, 43, and are partition surfaces that partition a pair of spaces 46, 46 (see FIG. 6). The first side surface 114b and the second side surface 114c of the extending portion 114 may be appropriately referred to as the "partition surfaces 114b, 114c." Among the side surfaces 114b to 114e of the extending portion 114, the third side surface 114d that intersects with the first side surface 114b and the second side surface 114c is a surface that forms the inner surface 47a of the first wall panel 47 (see FIG. 4) of the fixing portion 40. Among the side surfaces 114b to 114e of the extending portion 114, the fourth side surface 114e opposite to the third side surface 114d is a surface that forms the inner side surface 48a of the second wall panel 48 of the fixed portion 40 (see FIG. 8A).

[0050] The movable die 120 constitutes a male die (core) and has a molding surface 121 that mainly molds the back surface of the base material 20. This movable die 120 can be opened and closed relative to the opening end surface 113 of the fixed die 110. To be more specific, the molding surface 121 of the movable die 120 cooperates with the fixed die 110 to mainly mold a part of the inner surfaces 41b, 41b of the pair of plate members 41, 41 shown in Figs. 6 and 11 and the mounting seat 42.

[0051] The sliding die 130 has a molding surface 131 that mainly molds the inside of the base material 20, and is slidable in a direction (the direction of arrow R21 in FIG. 9A) toward and away from the fourth side surface 114e of the extension portion 114 of the fixed die 110. The operation method of the sliding die 130 employs an interlocking method in which the sliding die 130 operates in conjunction with the operation of the movable die 120, or an independent operation method in which the sliding die 130 operates independently of the operation of the movable die 120. The interlocking method is preferable.

[0052] More specifically, the slide die 130 can form the outer surface 48b (see FIG. 8A) and the through hole 53 (retaining hole 53) of the second wall plate 48 of the fixed part 40, and the pair of spaces 46, 46 (see FIG. 6). As shown in FIG. 12, for example, the slide die 130 has a so-called fork-shaped configuration having a slide base 132 that can slide in the direction of arrow R21, and a pair of space forming protrusions 133, 133 provided on the slide base 132.

[0053] The slide base 132 has a base tip surface 132a for forming the outer wall surface 48b (see FIG. 8A) of the second wall plate 48, and a hole forming protrusion 132b for forming the through hole 53 (see FIG. 8A) in the second wall plate 48. The base tip surface 132a faces the fourth side surface 114e of the extension portion 114. The pair of space forming protrusions 133, 133 are portions for forming the pair of spaces 46, 46 (see FIG. 6), and extend from the base tip surface 132a toward the fixed mold 110. The hole forming protrusion 132b comes into contact with the fourth side surface 114e of the extension portion 114, and determines the fitting position (set position) of the slide mold 130 relative to the fixed mold 110. The space between the fourth side surface 114e of the extension portion 114 and the base end surface 132a of the slide base portion 132 allows the second wall panel 48 to be molded from resin.

[0054] The pair of space forming protrusions 133, 133 are set longer than the hole forming protrusion 132b with respect to the base tip surface 132a. As shown in FIG. 9B, the opposing surfaces 133a, 133a of the pair of space forming protrusions 133, 133 facing each other are positioned so as to be able to abut (closely contact) with the first side surface 114b and the second side surface 114c of the extension portion 114 when the slide mold 130 is set (when the mold is clamped) relative to the fixed mold 110. Therefore, the inflow of molten resin is restricted between the first side surface 114b and the second side surface 114c and the opposing surfaces 133a, 133a. Preferably, as shown in FIG. 9B, the first side surface 114b and the second side surface 114c and the opposing surfaces 133a, 133a are tapered surfaces that are divergent toward the direction in which the slide mold 130 is fitted into the fixed mold 110. This enhances the effect of restricting the inflow of molten resin.

[0055] In this manner, the fixed mold 110 and the movable mold 120 can mold the remaining portion of the base material 20 excluding the pair of spaces 46, 46 and the inner surface 48a of the extension plate 48 (second wall plate 48).

[0056] The method for forming the base material 20 (fixing portion 40) is as follows. First, as shown in Fig. 10, the movable die 120 and the sliding die 130 are clamped to the fixed die 110. Next, molten resin is filled into the cavity 140 formed in the molding die by the fixed die 110, the movable die 120, and the sliding die 130. Next, after the molten resin has solidified, as shown in Fig. 11, the movable die 120 and the sliding die 130 are opened relative to the fixed die 110, and the resin-molded substrate 20 (fixed portion 40) is taken out from the cavity 140. This completes the molding operation of the substrate 20.

[0057] The above description of the embodiment can be summarized as follows.

[0058] As shown in Fig. 5 and Fig. 6, the vehicle cover device 10 includes a base material 20 (first cover body 20) made of an integrally molded resin product having an H-shaped cross section, which is made up of a pair of plate-shaped plate members 41, 41 facing each other with a distance D1 between them and a mounting seat 42 connecting the pair of plate members 41, 41, and an ornament 30 (second cover body 30) that can be attached to the base material 20. The pair of plate members 41, 41 integrally have a pair of plate-shaped protruding parts 43, 43 that protrude in directions facing each other from one end 41a, 41a of each of the pair of plate members 41, 41. The ornament 30 integrally has a fixed part 31 (boss 31) that can be fitted between the tips 43a, 43a of the pair of protruding parts 43, 43. The fixed part 31 is fitted between the tips 43a, 43a of the pair of protruding parts 43, 43, and is fastened to the mounting seat 42 by a fastening member 45.

[0059] In this way, the base material 20 has an H-shaped cross section, and a pair of plate-shaped protrusions 43, 43 protrude from each end 41a, 41a of the pair of plate members 41, 41 in a direction facing each other. The fixed portion 31 of the ornament 30 is fitted between the tips 43a, 43a (between the protruding surfaces 43a, 43a) of the protrusions 43, 43, and can be fastened to the mounting seat 42. Therefore, although the width Wd of the ornament 30 is narrow compared to the distance D1 between the pair of plate members 41, 41, the difference can be eliminated by the protrusion amount Pa, Pa of the pair of protrusions 43, 43. When the vehicle cover device 10 is viewed from the front, the mounting seat 42 can be concealed by each of the protrusions 43, 43 so that it cannot be seen. Moreover, since the thickness Th of the pair of plate members can be made constant in the base material 20 having an H-shaped cross section, there is no need to provide the base material 20 with unnecessary thickness (waste material). During resin molding, it is possible to prevent the occurrence of a "sink phenomenon" on the design surface of the base material 20. As a result, the quality of the vehicle cover device 10 can be improved.

[0060] In addition, since the base material 20 has a pair of plate-shaped protrusions 43, 43 protruding in mutually facing directions from each end 41a, 41a of the H-shaped cross section, there is no need to make the thickness of the mold (space forming portion) extremely thin in order to form a narrow space (small space). This ensures the strength of the mounting seat 42 while also ensuring the durability of the resin molding die 100. Moreover, there is no need to set the distance D1 between the pair of plate members 41, 41 large. This allows for a thin decorative item 30, improving design freedom.

[0061] In this way, the quality of the vehicle cover device 10 can be improved, and the durability of the resin molding die 100 can be ensured.

[0062] 4 and 5, the fixed part 31 has an integral locking part 33 protruding from a side surface 31b (lower surface 31b) of the fixed part 31. The mounting seat 42 has a retaining hole 53 (through hole 53) capable of temporarily holding the locking part 33 in a state in which the fixed part 31 is fitted between the tips 43a, 43a of the pair of protrusions 43, 43. Therefore, the locking part 33 of the fixed part 31 can be temporarily held in the retaining hole 53 from the time the fixed part 31 is fitted between the tips 43a, 43a of the pair of protrusions 43, 43 until the fastening to the mounting seat 42 is completed. Therefore, the fastening operation of fastening the fixed part 31 to the mounting seat 42 with the fastening member 45 is easy.

[0063] 2 to 4, the decorative item 30 is belt-shaped with a U-shaped cross section. One end 30c (upper end 30c) of the decorative item 30 has a fixed part 31. The other end 30b (lower end 30b) of the decorative item 30 has a hook piece 61. The base material 20 has a hooking part 63 onto which the hook piece 61 can be hooked. For this reason, to attach the decorative item 30 to the base material 20, it is sufficient to hook the hook piece 61, which is located away from the fixed part 31, onto the hooking part 63, and fasten the fixed part 31 to the mounting seat 42 with the fastening members 45. As there are fewer points at which the fixed part 31 needs to be fastened to the mounting seat 42, the assembly work is easy.

[0064] Furthermore, as shown in Figures 3, 9A and 9B, the resin molding mold 100 is for molding the base material 20 of a vehicle cover device 10 including the base material 20 consisting of a one-piece resin molded product and an ornament 30 that can be attached to this base material 20.

[0065] 4 and 5, the base material 20 is made of an integrally molded resin product and includes a fixing portion 40. The fixing portion 40 is configured to have an H-shaped cross section, and includes a pair of plate-like plate members 41, 41 facing each other with a gap therebetween, and a mounting seat 42 connecting the pair of plate members 41, 41. The fixing portion 40 further includes a pair of plate-like protruding portions 43, 43 protruding in directions facing each other from one end 41a, 41a (front ends 41a, 41a) of each of the pair of plate members 41, 41, and a pair of spaces 46, 46 (see FIG. 6) defined by the pair of plate members 41, 41, the mounting seat 42, and the pair of protruding portions 43, 43.

[0066] As shown in Figures 4 and 7A, the fixing portion 40 further includes an extension plate 48 extending from one end 42e (fourth end 42e) in a direction along the plate surfaces 41b, 41b (inner surfaces 41b, 41b) of a pair of plate members 41, 41 of the mounting seat 42 and the seat surface 42a of the mounting seat 42 (the direction of arrow R1 shown in Figure 7A) toward the pair of protrusions 43, 43.

[0067] As shown in Fig. 4, Fig. 6, Fig. 9A and Fig. 9B, the resin molding die 100 includes a slide die 130 that is movable in a direction (the direction of the arrow R1 shown in Fig. 7A) along the plate surfaces 41b, 41b of the pair of plate members 41, 41 and the seat surface 42a of the mounting seat 42 to form a pair of spaces 46, 46 (see Fig. 6), a fixed die 110 for forming the remaining part of the base material 20, and a movable die 120 that can be opened and closed relative to the fixed die 110. The fixed die 110 has partition surfaces 114b, 114c (the first side surface 114b and the second side surface 114c of the extension part 114) that partition the pair of spaces 46, 46. The slide die 130 has a slide base 132 and a pair of space forming protrusions 133, 133 that are provided on the slide base 132 to form (mold) the pair of spaces 46, 46 (see Fig. 6). The pair of space forming protrusions 133, 133 are positioned so as to be able to come into contact with partition surfaces 114b, 114c of the fixed mold 110 when the movable mold 120 is clamped to the fixed mold 110.

[0068] In this way, the pair of spaces 46, 46 partitioned by the pair of plate members 41, 41, the mounting seat 42, and the pair of protrusions 43, 43 are formed by sliding and fitting the pair of space forming protrusions 133, 133 of the slide die 130 into the fixed die 110. By skillfully combining the fixed die 110, the movable die 120, and the slide die 130, the thickness Th of the pair of plate members 41, 41 in the base material 20 having an H-shaped cross section can be made constant, so there is no need to provide unnecessary thickness (waste) in the base material 20. During resin molding, the occurrence of a "sink phenomenon" on the design surface of the base material 20 can be prevented. Therefore, the quality of the vehicle cover device 10 can be improved.

[0069] In addition, a pair of spaces 46, 46 partitioned by the fixed die 110, the movable die 120, and the sliding die 130 are molded (formed) so that a pair of plate-like protrusions 43, 43 protrude in mutually facing directions from each end 41a, 41a of the H-shaped cross section. Therefore, it is not necessary to make the thickness of the mold (space forming portion) extremely thin in order to form a narrow space (small space). Therefore, the durability of the resin molding die 100 can be ensured.

[0070] In this way, the quality of the vehicle cover device 10 can be improved, and the durability of the resin molding die 100 can be ensured.

[0071] 4 and 7A, the extension plate 48 of the base material 20 has a through hole 53 (retaining hole 53). Furthermore, as shown in Fig. 9A and 9B, the slide mold 130 of the resin molding die 100 has hole forming protrusions 132b provided on the slide base 132 for forming the through hole 53 (see Fig. 4). The pair of space forming protrusions 133, 133 are set longer than the hole forming protrusions 132b.

[0072] As described above, the pair of spaces 46, 46 are located directly below (on the projection of) the seating surface 42a of the mounting seat 42. In contrast, the extension plate 48 is located at one end 42e in the direction along the seating surface 42a of the mounting seat 42. In other words, the positions of the extension plate 48 and the through hole 53 are biased in the direction along the seating surface 42a with respect to the positions of the spaces 46, 46.

[0073] The slide mold 130 of the present invention makes good use of this bias. In other words, the length of each space forming protrusion 133, 133 relative to the slide base 132 is set to be longer than the hole forming protrusion 132b. When the slide mold 130 is slid and fitted into the fixed mold 110, the space forming protrusions 133, 133 are fitted into the fixed mold 110 before the hole forming protrusion 132b.

[0074] Therefore, it is possible to appropriately set the lengths of both the space forming protrusions 133, 133 so that when the space forming protrusions 133, 133 slide to a position for forming the spaces 46, 46, the hole forming protrusion 132b finishes sliding to a position for forming the through hole 53. Therefore, a single slide die 130 is sufficient to mold the spaces 46, 46 and the through hole 53. The configuration of the resin molding die 100 can be simplified.

[0075] As long as the functions and effects of the present invention are achieved, the present invention is not limited to the examples. For example, the vehicle cover device 10 is not limited to a configuration that covers the front part of the vehicle body, and may be configured to cover other parts. For example, the vehicle cover device 10 can be applied to a configuration that covers the entire exterior of the vehicle body or the interior of the vehicle body (including the passenger compartment). Further, the vehicle cover device 10 has been illustrated as being provided on a passenger car, but it can also be applied to vehicles other than passenger cars, and is not limited to these types. [Industrial Applicability]

[0076] The vehicle cover device 10 of the present invention is suitable for installation in the front part of a passenger vehicle. [Explanation of symbols]

[0077] 10 Vehicle cover device 20 Base material (first cover body, front grille) 30 Decorations (second cover body, garnish) 30b The other end (bottom end) of the ornament 30c One end of the ornament (top end) 31 Fixed part (boss) 33 Locking part 41 Plate members 41a One end of plate member 41b Plate surface of plate member 42 Mounting seat 42a Mounting seat surface 42e One end of mounting base (fourth end) 43 Protrusion 43a Tip of protrusion 45 Fastening members 46 Space 48 Extension plate 53 Holding hole (through hole) 61 Hook 63 Hook stopper 100 Resin molding mold 110 Fixed type 114b Partition surface (first side of extension) 114c Partition surface (second side of extension) 120 Movable type 130 Slide type 132 Slide base 132b Hole forming protrusion 133 Projection for space shaping D1 Interval

Claims

1. a base material made of an integrally molded resin product including a fixing portion having an H-shaped cross section formed by a pair of plate-shaped plate members facing each other with a gap therebetween and a mounting seat connecting the pair of plate members; An ornament that can be attached to the fixing part, The pair of plate members each have a pair of plate-shaped protrusions integrally protruding from one end in a direction facing each other, the ornament has an integral fixed portion that can be fitted between the tips of the pair of protruding portions, The fixed portion is fitted between the tip ends of the pair of protrusions and fastened to the mounting seat by a fastening member.

2. The fixed portion has an integral locking portion protruding from a side surface of the fixed portion, The vehicle cover device according to claim 1 , wherein the mounting seat has a retaining hole capable of temporarily retaining the engaging portion in a state in which the fixed portion is fitted between the tip ends of the pair of protruding portions.

3. The decorative item has a belt-like shape with a U-shaped cross section, One end of the decorative item has the fixed portion, The other end of the ornament has a hook piece, The vehicle cover device according to claim 1 , wherein the base material has a hook portion capable of hooking the hook piece.

4. a base material made of an integrally molded resin product, the base material having an H-shaped cross section formed by a pair of plate-like plate members facing each other with a gap therebetween and a mounting seat connecting the pair of plate members, the cross section being configured to include a pair of plate-like protrusions protruding in directions facing each other from one end of each of the pair of plate members, a pair of spaces partitioned by the pair of plate members, the mounting seat, and the pair of protrusions, and a fixing portion including an extension plate extending from one end of the mounting seat in a direction along the plate surfaces of the pair of plate members and the seat surface of the mounting seat toward the pair of protrusions; A decorative item that can be attached to the base material; A resin molding die for molding the base material of a vehicle cover device comprising: a slide mold that is movable in a direction along plate surfaces of the pair of plate members and a seat surface of the mounting seat to form the pair of spaces, a fixed mold that is used to form the remaining portion of the base material, and a movable mold that is openable and closable relative to the fixed mold, The fixed type has a partition surface that separates the pair of spaces, the slide mold has a slide base and a pair of space forming protrusions provided on the slide base for forming the pair of spaces, The pair of space forming protrusions are positioned so as to be able to abut against the partition surface of the fixed mold when the movable mold is clamped to the fixed mold.

5. The extension plate of the base material has a through hole, the slide mold has a hole forming protrusion provided on the slide base for forming the through hole, The resin molding die according to claim 4 , wherein the pair of space forming protrusions are set to be longer than the hole forming protrusions.

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