Exterior member for vehicle

Abstract

To prevent the occurrence of a weld line in a base portion.SOLUTION: An exterior member for a vehicle includes: a bumper cover composing a part of an outer shell portion of the vehicle; and a grille 20 provided inside the vehicle with respect to the bumper cover and facing the bumper cover. The bumper cover has a through-hole passing through the bumper cover. The grille 20 includes: a resin base material 21 having a base portion 24 provided at a position overlapping the through- hole in a longitudinal direction L; and a decorative layer with which an external surface of the base portion is overlaid. The resin base material has: gate marks 27 formed at both ends of the resin base material in a vehicle width direction W; and a long hole 30 extending in a vertical direction Z and passing through the resin base material. The long hole is adjacent to the base portion in the vehicle width direction W, extends outward beyond both ends of the base portion in the vertical direction Z, and is provided at a position overlapping the bumper cover in the longitudinal direction L so as not to be exposed from an external part of the vehicle.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to an exterior part for a vehicle. [Background technology]

[0002] Patent Document 1 describes a radiator grille as a decorative member. The radiator grille described in Patent Document 1 has a surface member and a decorative substrate provided on the vehicle rear side of the surface member. The surface member is plate-shaped with a number of through holes. The decorative substrate has a band-shaped substrate base extending in the vehicle width direction, a plurality of protrusions protruding from the substrate base toward the vehicle front side, and a decorative layer laminated on the tip surfaces of the protrusions. The multiple protrusions are provided at intervals from each other in the vehicle width direction. The protrusions are provided at positions overlapping with the through holes of the surface member in the front-rear direction. The substrate base and the protrusions are integrally molded from resin. The decorative layer is formed by hot stamping. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-48559 Summary of the Invention [Problem to be solved by the invention]

[0004] The base material base and protrusions (hereinafter referred to as resin base material) of the decorative member described in Patent Document 1 are formed by supplying molten resin into a mold. Since the resin base material is a strip extending in the vehicle width direction, the molten resin is supplied into the mold from gates set in portions of the mold corresponding to both sides of the resin base material in the vehicle width direction. In this case, weld lines, which are traces of molding defects, are likely to occur where the molten resin flowing into the mold from both gates meet. In this case, the weld lines that occur in the protrusions may mar the appearance of the decorative layer laminated on the tip surfaces of the protrusions. [Means for solving the problem]

[0005] Various aspects of vehicle exterior accessories for solving the above problems will be described below. [Aspect 1] an exterior accessory for a vehicle, the exterior accessory comprising: an exterior member that forms a part of an outer shell of a vehicle; and a decorative member that is located inward of the vehicle with respect to the exterior member and facing the exterior member; wherein the exterior member has a through hole that penetrates the exterior member in an opposing direction between the exterior member and the decorative member; the decorative member has a resin substrate having a base that is located at a position overlapping with the through hole in the opposing direction; and a decorative layer that is laminated on an outer surface of the base; the resin substrate has gate marks formed on both ends of the resin substrate, respectively; and elongated holes that extend in an extension direction that intersects with an alignment direction of the two gate marks in a surface direction of the resin substrate and that penetrate the resin substrate in the opposing direction; the elongated holes are adjacent to the base in the aligned direction and extend outward beyond both ends of the base in the extending direction; and are located at a position that overlaps with the exterior member in the opposing direction so as not to be exposed to the outside of the vehicle.

[0006] When a resin substrate is molded by supplying molten resin into a mold through a gate, a gate mark is formed on the resin substrate, which is a mark left by removing a portion corresponding to the gate. According to the above configuration, the slots are adjacent to the base of the resin substrate in the arrangement direction and extend beyond both ends of the base in the extension direction. Therefore, when molten resin is supplied from two gates into the mold to mold the resin substrate, the molten resins supplied from the gates are prevented from merging in the portion of the cavity in the mold that molds the base by the portion of the molding surface of the mold that molds the slots, i.e., the partition wall. Therefore, it is possible to prevent weld lines from occurring in the base.

[0007] [Aspect 2] The vehicle exterior part according to [Aspect 1], wherein the resin substrate is long and the two gate marks are formed on both ends of the resin substrate in the longitudinal direction.

[0008] When a resin substrate is long, if gates are set in the mold at locations corresponding to both ends of the resin substrate in the longitudinal direction when molding the resin substrate, the molten resin supplied from each gate is likely to cool before joining together, which makes it easy for weld lines to occur.

[0009] In this regard, the above configuration makes it possible to prevent weld lines from occurring at the base of a long resin substrate having two gate marks formed at both ends in the longitudinal direction.

[0010] [Aspect 3] The vehicle exterior part according to [Aspect 2], wherein the exterior member has a plurality of the through holes, and the resin substrate has a plurality of the base portions corresponding to the plurality of the through holes, and the base portions are provided on both sides of the elongated hole in the arrangement direction.

[0011] According to the above configuration, in a resin base material in which base portions are provided on both sides of the elongated hole in the arrangement direction, it is possible to prevent weld lines from occurring on each of the base portions. [Aspect 4] The vehicle exterior part according to [Aspect 2] or [Aspect 3], wherein the exterior member has a plurality of the through holes, the resin base material has a plurality of the bases corresponding to the plurality of the through holes, the plurality of the bases are arranged side by side in the extension direction, and the long hole is provided over the entirety of the plurality of the bases arranged side by side in the extension direction.

[0012] In a resin substrate having multiple bases arranged side by side in the extension direction, if a long hole is provided for each base, there is a risk that the molten resin will pass through the part of the molding surface of the mold where the long holes are molded, i.e., between the separating walls, and it may not be possible to prevent the molten resin from merging.

[0013] In this regard, according to the above configuration, in a resin base material in which a plurality of base portions are arranged side by side in the extension direction, it is possible to prevent weld lines from occurring in each of the base portions. [Aspect 5] The vehicle exterior part according to any one of [Aspect 1] to [Aspect 4], wherein the decorative layer is a hot stamp layer.

[0014] Generally, the thickness of a hot stamped part is thinner than that of a coating or plating. Therefore, if a hot stamped decorative layer is formed on the outer surface of a base part where a weld line has occurred, the weld line is likely to be transferred to the decorative layer, resulting in poor appearance.

[0015] In this regard, according to the above configuration, it is possible to prevent the occurrence of weld lines in the base portion, and therefore possible to prevent the occurrence of poor appearance of the decorative layer. [Aspect 6] The vehicle exterior part according to any one of [Aspect 1] to [Aspect 5], wherein a reinforcing member is attached to the resin base material so as to cover the elongated hole from the inside of the vehicle.

[0016] The formation of the slots in the resin base material reduces the rigidity of the resin base material, and hence the rigidity of the decorative member. In this regard, according to the above configuration, by attaching the reinforcing member to the resin base material as described above, it is possible to suppress a decrease in the rigidity of the resin base material, and therefore a decrease in the rigidity of the decorative member. [Effects of the Invention]

[0017] According to the present invention, it is possible to suppress the occurrence of a weld line at the base. [Brief explanation of the drawings]

[0018] [Figure 1] FIG. 1 is a front view of a vehicle exterior accessory according to this embodiment. [Figure 2] FIG. 2 is a rear view of the vehicle exterior accessory of FIG. [Figure 3] FIG. 3 is a rear view of the bumper cover of FIG. [Figure 4] FIG. 4 is a front view of the resin base material of FIG. [Figure 5] FIG. 5 is a rear view of the resin base material of FIG. [Figure 6] 6 is a rear view of the reinforcing member of FIG. 2. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0019] Hereinafter, one embodiment of a vehicle exterior accessory will be described with reference to FIGS. In the following description, the longitudinal direction of the vehicle will be referred to as the longitudinal direction L, the width direction of the vehicle as the width direction W, and the vertical direction of the vehicle when the vehicle is positioned on a horizontal plane as the vertical direction Z.

[0020] As shown in FIGS. 1 and 2, the vehicle exterior accessory 10 includes a bumper cover 11, a grille 20, and a reinforcing member 50. <Bumper Cover 11> As shown in FIG. 1, the bumper cover 11 is a front bumper cover that constitutes a part of the outer shell portion at the front of the vehicle.

[0021] The bumper cover 11 is provided with through holes 13 that penetrate the bumper cover 11 in the front-rear direction L. The through holes 13 have a hexagonal shape when viewed from the front, and are arranged in a grid pattern. The through holes 13 are arranged in a line in the up-down direction Z. The through holes 13 are also arranged in a line in the vehicle width direction W, and are arranged so that the up-down positions of adjacent through holes 13 in the vehicle width direction W are alternated. In this embodiment, three through holes 13 are arranged in a line in the up-down direction Z. Furthermore, five through holes 13 are arranged in a line in the vehicle width direction W.

[0022] 3, the bumper cover 11 is provided with a plurality of engagement claws 19 that protrude rearward from the rear surface of the bumper cover 11. The plurality of engagement claws 19 are provided around the lower edges of the plurality of through holes 13, respectively.

[0023] <Grill 20> 1 and 2, the grille 20 is provided on the inside of the vehicle relative to the bumper cover 11, facing the bumper cover 11 in the front-to-rear direction L. The grille 20 is attached to the rear surface of the bumper cover 11 by fastening members (not shown).

[0024] As shown in FIG. 1, the grille 20 includes a resin base material 21 and a decorative layer 40. (Resin substrate 21) As shown in FIGS. 4 and 5, the resin base material 21 has a long plate shape that extends long in the vehicle width direction W.

[0025] The resin base material 21 is made of a thermoplastic resin. 1 and 2, the resin base material 21 is provided with communication holes 23 at positions corresponding to the plurality of through holes 13. The communication holes 23 have a trapezoidal shape in a front view, and extend outward beyond both side edges of the through holes 13 in the vehicle width direction W. The upper edge of the communication holes 23 extends along the upper edge of the through holes 13. The lower edge of the communication holes 23 is located higher than the lower edge of the through holes 13.

[0026] 2, 4, and 5, the resin base material 21 is provided with engagement holes 29 at positions corresponding to the plurality of engagement claws 19. The engagement claws 19 engage with the engagement holes 29, thereby positioning the grille 20 relative to the bumper cover 11.

[0027] As shown in Figures 4 and 5, the resin base material 21 is provided with a base 24 located at a position overlapping the through hole 13 in the front-to-rear direction L, gate marks 27 formed at both ends of the resin base material 21 in the vehicle width direction W, and a long hole 30.

[0028] 1, a plurality of bases 24 are provided, and are provided at positions corresponding to the plurality of through holes 13, respectively. The bases 24 are portions of the resin base material 21 defined by the lower edges of the communicating holes 23 and the peripheries of the through holes 13. A plurality of bases 24 are provided lined up in the vertical direction Z. In this embodiment, three bases 24 are provided lined up in the vertical direction Z.

[0029] The portion of the resin base material 21 that is different from the base portion 24 is covered by a bumper cover 11 from the front of the vehicle. As shown in FIG. 5, the two gate marks 27 are located outside the outermost base portions 24 in the vehicle width direction W, and are located at the center of the resin base material 21 in the up-down direction Z.

[0030] The elongated hole 30 extends in a plane direction of the resin base material 21 that intersects with the vehicle width direction W, i.e., in the up-down direction Z, and penetrates the resin base material 21 in the front-rear direction L. The elongated hole 30 is adjacent to the base 24 in the vehicle width direction W, extends outward beyond both ends of the base 24 in the up-down direction Z, and is provided at a position overlapping with the bumper cover 11 in the front-rear direction L so as not to be exposed to the outside of the vehicle. The elongated hole 30 is provided between adjacent bases 24 in the vehicle width direction W. The elongated hole 30 is preferably provided throughout the plurality of bases 24 that are arranged side by side in the up-down direction Z. In this embodiment, the elongated hole 30 is adjacent to three bases 24 that are arranged side by side in the up-down direction Z at the center of the resin base material 21 in the vehicle width direction W, and is provided throughout the three bases 24. In addition, the long holes 30 are provided between the three bases 24 located in the center of the resin base material 21 in the vehicle width direction W, and between the three bases 24 located in the center of the resin base material 21 and the three bases 24 adjacent to each other on one side of the vehicle width direction W (the right side in Figure 5).

[0031] The elongated hole 30 has a first hole portion 31, a second hole portion 32, a third hole portion 33, a fourth hole portion 34, and a fifth hole portion 35 in this order from the bottom. The first hole portion 31 is inclined so that the upper portion in the vertical direction Z is spaced apart in the vehicle width direction W from the center of the resin base material 21 in the vehicle width direction W.

[0032] The second hole portion 32 is continuous with the upper end of the first hole portion 31 and is inclined so that the upper portion in the vertical direction Z approaches the center of the resin base material 21 in the vehicle width direction W.

[0033] The third hole portion 33 is continuous with the upper end of the second hole portion 32 and is inclined so that the upper portion in the vertical direction Z is further away in the vehicle width direction W from the center of the resin base material 21 in the vehicle width direction W.

[0034] The fourth hole portion 34 is continuous with the upper end of the third hole portion 33 and is inclined so that the upper portion in the vertical direction Z approaches the center of the resin base material 21 in the vehicle width direction W.

[0035] The fifth hole portion 35 is connected to the upper end of the fourth hole portion 34 and has a base end portion that slopes away from the center of the resin base material 21 in the vehicle width direction W in the vehicle width direction W, and a tip end portion that extends from the upper end of the base end portion along the up-down direction Z.

[0036] (Decorative layer 40) As shown in FIG. 1, the decorative layer 40 is laminated on the outer surface of the base 24 . The decorative layer 40 is a hot stamp layer in which a metal foil is thermally transferred onto the outer surface of the base 24 .

[0037] 5, the resin base material 21 is provided with a plurality of attachment portions 28 that protrude rearward from the rear surface of the resin base material 21 and have holes that open rearward. The plurality of attachment portions 28 are provided at positions adjacent to the lower end of the first hole portion 31, the connection portion between the first hole portion 31 and the second hole portion 32, the connection portion between the second hole portion 32 and the third hole portion 33, the connection portion between the third hole portion 33 and the fourth hole portion 34, and the connection portion between the fourth hole portion 34 and the fifth hole portion 35.

[0038] <Reinforcing member 50> As shown in FIG. 2, a reinforcing member 50 is attached to the resin base material 21 to cover the elongated hole 30 from the inside of the vehicle.

[0039] As shown in FIG. 6, the reinforcing member 50 has a first arm 51, a second arm 52, a third arm 53, a fourth arm 54, a first mounting piece 55, a second mounting piece 56, a third mounting piece 57, a fourth mounting piece 58, and a fifth mounting piece 59.

[0040] 2, the first mounting piece 55, the second mounting piece 56, the third mounting piece 57, the fourth mounting piece 58, and the fifth mounting piece 59 are provided at positions corresponding to the multiple mounting portions 28 of the resin base material 21. Screws 60 are inserted through mounting holes 61 (see FIG. 6) provided in the first mounting piece 55, the second mounting piece 56, the third mounting piece 57, the fourth mounting piece 58, and the fifth mounting piece 59 and threaded into holes in the mounting portions 28, thereby fastening the resin base material 21 and the reinforcing member 50 together.

[0041] The first arm portion 51 extends along the first hole portion 31 and connects the first attachment piece 55 and the second attachment piece 56 together. The second arm portion 52 extends along the second hole portion 32 and connects the second attachment piece 56 and the third attachment piece 57 together.

[0042] The third arm portion 53 extends along the third hole portion 33 and connects the third attachment piece 57 and the fourth attachment piece 58 together. The fourth arm portion 54 extends along the fourth hole portion 34 and connects the fourth attachment piece 58 and the fifth attachment piece 59 together.

[0043] In this embodiment, the bumper cover 11 and the grille 20 correspond to the exterior member and the decorative member, respectively, of the present invention. Also, in this embodiment, the front-rear direction L and the vehicle width direction W correspond to the facing direction and the juxtaposed direction, respectively, of the present invention.

[0044] <Operation of this embodiment> As shown in FIG. 5, when molten resin is supplied from a gate into a mold to mold the resin substrate 21, a gate mark 27 is formed in the resin substrate 21, where the portion corresponding to the gate has been removed. The slot 30 is adjacent to the base 24 of the resin substrate 21 in the vehicle width direction W and extends beyond both ends of the base 24 in the up-down direction Z. Therefore, when molten resin is supplied from two gates into the mold to mold the resin substrate 21, the following can be achieved. That is, the portions of the molding surface of the mold that mold the slot 30, i.e., the partition walls, prevent the molten resins supplied from the gates from joining together in the portion of the cavity in the mold that molds the base 24.

[0045] <Effects of this embodiment> (1) The long hole 30 is adjacent to the base 24 in the vehicle width direction W, and extends outward beyond both ends of the base 24 in the vertical direction Z. It is also positioned so as to overlap with the bumper cover 11 in the longitudinal direction L, and is configured not to be exposed to the outside of the vehicle.

[0046] According to this configuration, the above-mentioned effects are achieved, and therefore the occurrence of weld lines in the base portion 24 can be suppressed. (2) The resin base material 21 has an elongated shape. The two gate marks 27 are formed on both ends of the resin base material 21 in the vehicle width direction W.

[0047] When the resin substrate 21 is long, if gates are provided in the mold at positions corresponding to both ends of the resin substrate 21 in the longitudinal direction during molding, the molten resin supplied from each gate is likely to cool before joining together, which makes it easy for weld lines to occur in the resin substrate 21.

[0048] In this regard, the above configuration can prevent weld lines from occurring in the base 24 of the resin substrate 21, which is long and has two gate marks 27 formed at both ends in the longitudinal direction, i.e., the vehicle width direction W.

[0049] (3) The base portions 24 are provided on both sides of the elongated hole 30 in the vehicle width direction W. According to this configuration, in the resin base material 21 in which the bases 24 are provided on both sides of the elongated hole 30 in the vehicle width direction W, it is possible to prevent weld lines from occurring in each of the bases 24.

[0050] (4) The elongated holes 30 are provided over the entirety of the plurality of base portions 24 arranged side by side in the vertical direction Z. In a resin substrate 21 in which a plurality of bases 24 are arranged side by side in the vertical direction Z, if a slot 30 is provided for each base 24, there is a risk that the molten resin will pass through the portions of the molding surface of the mold where the slots 30 are molded, i.e., between the partition walls. As a result, there is a risk that it will not be possible to prevent the molten resins from joining together.

[0051] In this regard, according to the above configuration, in the resin base material 21 in which the plurality of bases 24 are arranged side by side in the up-down direction Z, it is possible to prevent weld lines from occurring in each of the bases 24.

[0052] (5) The decorative layer 40 is a hot stamp layer. Generally, the thickness of a hot stamped layer is thinner than that of a coating or plating. Therefore, if a hot stamped layer is formed as the decorative layer 40 on the outer surface of the base 24 where a weld line has occurred, the weld line is likely to be transferred to the decorative layer 40, resulting in poor appearance.

[0053] In this regard, according to the above-described configuration, it is possible to prevent the occurrence of weld lines in the base portion 24, and therefore it is possible to prevent the occurrence of poor appearance of the decorative layer 40. (6) The resin base material 21 is provided with a reinforcing member 50 that covers the slot 30 from the inside of the vehicle.

[0054] The formation of the slots 30 in the resin base material 21 reduces the rigidity of the resin base material 21, and therefore the rigidity of the grille 20. In this regard, according to the above configuration, by attaching the reinforcing member 50 to the resin base material 21 as described above, it is possible to suppress a decrease in the rigidity of the resin base material 21, and therefore a decrease in the rigidity of the grille 20.

[0055] <Example of change> This embodiment can be modified as follows: This embodiment and the following modifications can be combined and implemented within the scope of technical compatibility.

[0056] In the above embodiment, the reinforcing member 50 that covers the elongated hole 30 from the inside of the vehicle is attached to the resin base material 21. However, if the reduction in rigidity of the resin base material 21 due to the elongated hole 30 is small, the reinforcing member 50 may be omitted.

[0057] In the above embodiment, the decorative layer 40 is a hot stamped layer, but the decorative layer 40 may be a coating or a plated layer. In the above embodiment, the elongated holes 30 are provided over the entirety of the plurality of bases 24 arranged side by side in the vertical direction Z, but this is not limited to this. The elongated holes 30 may be provided adjacent to some of the bases 24 arranged side by side in the vertical direction Z.

[0058] In the above embodiment, the bases 24 are provided on both sides of the elongated hole 30 in the vehicle width direction W, but this is not limiting. The bases 24 may be provided on only one side of the elongated hole 30 in the vehicle width direction W.

[0059] In the above embodiment, the gate marks 27 are formed on both ends of the resin base material 21 in the vehicle width direction W, but the gate marks 27 may be formed on both ends of the resin base material 21 in the up-down direction Z.

[0060] In the above embodiment, the resin base material 21 is elongated and extends in the vehicle width direction W. However, the present invention is not limited to this. The resin base material 21 may be elongated and extends in the up-down direction Z. In the above embodiment, the elongated holes 30 are provided adjacent to a plurality of base portions 24 arranged side by side in the vertical direction Z, but the elongated holes 30 may be provided adjacent to a single base portion 24.

[0061] In the above embodiment, the resin base material 21 is described as having gate marks 27 only at both ends in the vehicle width direction W, but this is not limiting. Gates may be added at other positions as long as the direction in which the molten resin flows from the gates that form the two gate marks 27 is the main flow direction of the resin in the mold.

[0062] In the above embodiment, the resin base material 21 is in the shape of a long plate, but it may also be in the shape of a square plate when viewed from the front, for example. In the above embodiment, the vehicle exterior accessory 10 is embodied as an assembly of a front bumper cover and a grille, but is not limited to this. For example, the vehicle exterior accessory 10 may be configured as an assembly of a rear bumper cover having a through-hole and a decorative member positioned inside the rear bumper cover. In this case, the decorative member does not need to have a hole at a position that overlaps with the through-hole of the rear bumper cover in the front-rear direction L. [Explanation of symbols]

[0063] 10...Exterior parts for vehicles 11...Bumper cover (exterior part) 13...Through hole 19...Engaging claw 20... Grill (decorative part) 21...Resin substrate 23…Communication hole 24...Base 27...Gate remains 28...Mounting part 29...Engagement hole 30...long hole 31...First hole 32...Second hole 33...Third hole 34…4th hole 35...5th hole 40...Decorative layer 50...Reinforcing member 51...1st arm 52...Second arm 53...Third arm 54…4th arm 55...First mounting piece 56...Second mounting piece 57...Third mounting piece 58...Fourth mounting piece 59...5th mounting piece 60...Screw 61...Mounting hole

Claims

1. An exterior accessory for a vehicle, comprising: an exterior member that constitutes a part of an outer shell portion of a vehicle; and a decorative member that is provided on the inside of the vehicle with respect to the exterior member and facing the exterior member, the exterior member has a through hole penetrating the exterior member in a direction in which the exterior member and the decorative member face each other, the decorative member includes a resin substrate having a base portion provided at a position overlapping the through hole in the opposing direction, and a decorative layer laminated on an outer surface of the base portion, the resin substrate has gate marks formed on both ends of the resin substrate, and a long hole extending in an extension direction intersecting an arrangement direction of the two gate marks in a surface direction of the resin substrate and penetrating the resin substrate in the opposing direction, The elongated holes are adjacent to the base portion in the arrangement direction, extend outward beyond both ends of the base portion in the extension direction, and are provided at positions overlapping with the exterior member in the opposing direction so as not to be exposed to the outside of the vehicle. Exterior parts for vehicles.

2. The resin substrate is in a long shape, the two gate marks are formed at both ends of the resin base material in the longitudinal direction, The vehicle exterior part according to claim 1 .

3. the exterior member has a plurality of the through holes, the resin substrate has a plurality of base portions corresponding to the plurality of through holes, The base portions are provided on both sides of the elongated hole in the arrangement direction. The vehicle exterior part according to claim 2 .

4. the exterior member has a plurality of the through holes, the resin substrate has a plurality of base portions corresponding to the plurality of through holes, The base portion is provided in plurality and aligned in the extension direction, The long hole is provided over the entirety of the plurality of base portions arranged side by side in the extension direction. The vehicle exterior part according to claim 2 or 3.

5. The decorative layer is a hot stamp layer. The vehicle exterior part according to claim 1 .

6. a reinforcing member is attached to the resin base material to cover the long hole from the inside of the vehicle; The vehicle exterior part according to claim 1 .

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