JP7380286B2 - Vehicle pillar garnish - Google Patents

Description

The present invention relates to a pillar garnish for a vehicle .

Conventionally, molded structures are known in which a resin molded body is integrally molded onto a base material containing fibers and a thermoplastic resin. Patent Document 1 below describes a manufacturing method in which a resin molded body is molded by molding a base material using a pair of molds and then injecting molten resin onto the base material. The molten resin injected onto the base material mixes with the thermoplastic resin constituting the base material. As a result, the resin molded body is bonded to the base material.

Patent No. 5186883

However, when comparing the molding shrinkage rates of the base material and the resin molded article, the molding shrinkage rate of the resin molded article is larger. Therefore, in the cooling process after injection molding, there is a concern that stress will be generated at the joint surface due to the difference in the amount of shrinkage between the two, resulting in deformation of the molded structure.

The present invention was completed based on the above circumstances, and one of the objects is to realize a molded structure in which deformation is suppressed. Moreover, one of the further objects is to provide a method for manufacturing such a molded structure.

The molded structure disclosed herein includes a plate-shaped base material containing fibers and a thermoplastic resin, and a resin molded body containing the thermoplastic resin, and the resin molded body is one of the base materials. and a second resin molded part joined to the other plate surface of the base material.

Generally, the shrinkage rate of a resin molded body containing a thermoplastic resin is greater than that of a base material containing fibers and a thermoplastic resin. Therefore, if a resin molded body (first resin molded part) is bonded to only one plate surface of a plate-shaped base material, the bonded surface will change over time due to temperature changes and crystallization after molding. Stress is generated in the molded structure and the molded structure is deformed.

Therefore, if in addition to the first resin molded part that is joined to one plate surface, the second resin molded part is joined to the other board surface, the joint surfaces are arranged on both sides of the base material. Ru. As a result, the stress generated at each joint surface cancels out each other, and deformation of the molded structure is suppressed. Note that the thermoplastic resin contained in the base material and the thermoplastic resin contained in the resin molded article may be the same material or may be different materials.

Further, the second resin molded part may be joined to the first resin molded part at a position symmetrical to the base material. In this way, the stress generated at one of the bonded surfaces is canceled out by the stress generated at the other bonded surface located at a symmetrical position with the base material in between. In other words, the stress is canceled out within the region sandwiched between both bonding surfaces, making it difficult for the stress to affect other regions of the molded structure. Thereby, deformation of the molded structure can be further suppressed.

Further, the other plate surface has a base material recess formed by making the thickness smaller than the other part of the base material, and the second resin molded part is filled in the base material recess. The base member may be joined to the base material recess in a manner that

In this way, by appropriately changing the size (area in plan view and depth of the base material recess) and shape of the base material recess, the amount of thermoplastic resin constituting the second resin molded part can be adjusted. The shape can be adjusted. Thereby, the magnitude of the stress generated due to the second resin molded portion can be adjusted as appropriate and balanced with the stress generated due to the first resin molded portion. Thereby, deformation of the molded structure due to temperature changes and the like can be further suppressed.

Moreover, in such a configuration, the second resin molded part is joined to the base material recessed part that is thinner than other parts of the base material. Therefore, the difference in thickness between the portion of the molded structure where the second resin molded portion is arranged and the other portions can be reduced or eliminated. Thereby, design constraints on the other plate surface due to the presence of the second resin molded portion can be suppressed or eliminated.

Further, as a means for solving the above problems, a method for manufacturing a molded structure disclosed herein includes a preboard molding step of molding a plate-shaped preboard containing fibers and a thermoplastic resin using a pair of press molds; a base material molding step, which is performed after the preboard molding step, and in which the preboard is press-molded with a mold to form the base material; and a base material molding step, which is performed after the base material molding step, and molding inside the closed mold. an injection molding step of injecting molten resin into a space to mold the resin molded body, and in the injection molding step, the first resin molding section and the second resin molding section each sandwich the base material. It is characterized in that it is molded at the same position and is bonded to the base material.

In this way, the first resin molded part and the second resin molded part molded in the injection molding process are respectively joined at positions sandwiching the base material. Then, during the cooling process after the injection molding process, the stress generated at each joint surface becomes opposite and cancels each other out, so that deformation of the molded structure is suppressed.

Further, as a means for solving the above problems, a method for manufacturing a molded structure disclosed herein includes a preboard molding step of molding a plate-shaped preboard containing fibers and a thermoplastic resin using a pair of press molds; a base material molding step, which is performed after the preboard molding step, and in which the preboard is press-molded with a mold to form the base material; and a base material molding step, which is performed after the base material molding step, and molding inside the closed mold. an injection molding step of injecting a molten resin into a space to mold the resin molded body, the pair of press molds having at least one press surface oriented convexly toward the other press surface. It has at least one surface convex portion, and in the preboard forming step, the press surface convex portion is pressed against the preboard to form a preboard recess in a part of the preboard, and in the base material forming step, The preboard recess becomes the base material recess in the base material press-molded by the mold, and in the injection molding step, the first resin molded part and the second resin molded part each sandwich the base material. It is characterized in that it is molded at a different position and joined to the base material.

In this way, in the preboard molding process, a preboard recess is formed in the portion to which the press surface convex portion is pressed, and the preboard recess has a smaller thickness than other parts of the preboard. Then, in the subsequent base material forming step, a base material is molded from the preboard, and at this time, the preboard recesses become base material recesses in the base material. In other words, by forming the press surface convex portions in advance on the press die, there is no need for a separate step of forming base material concave portions. Thereby, deformation can be further suppressed without increasing the number of steps in manufacturing the molded structure.

According to the present invention, deformation of the molded structure can be suppressed.

Whole perspective view of pillar garnish 20 (design side) Whole perspective view of pillar garnish 20 (back side) Overall perspective view of base material 30 AA sectional view in Figure 1 A sectional view corresponding to FIG. 4 without the second resin molded part 42 Cross-sectional view showing the preboard molding step S10 A sectional view showing the mold opening state of the molding device 70 Cross-sectional view showing the base material forming step S20 Cross-sectional view showing injection molding process S30 A cross-sectional view showing a state in which the slide mold has been moved from the state shown in Figure 9. Cross-sectional view showing a state in which the pillar garnish is pushed out by the push-out pin 77

<Embodiment>
An embodiment of the present invention will be described based on FIGS. 1 to 11. In this embodiment, a pillar garnish 20 for a vehicle is exemplified as a molded structure. In addition, the directions of arrows FR and RR shown in each figure indicate the front (vehicle traveling direction) and rear, respectively, the directions of arrows IN and OUT indicate the inside and outside directions of the vehicle, respectively, and the directions of arrows UP and DW. indicate the upper and lower sides, respectively.

The pillar garnish 20 is a vehicle interior material (an example of a vehicle interior material) that is attached from the inside of the vehicle to a center pillar (B pillar) disposed on a side wall of the vehicle interior. As shown in FIG. 4, which is a perspective view of FIGS. 1 and 2 and a sectional view taken along line AA in FIG. A pair of side wall portions 25 and 26 are provided at both end portions (both end portions in the longitudinal direction of the vehicle), respectively. Further, the surface of the pillar garnish 20 facing toward the outside of the vehicle is defined as a back surface (one plate surface) 20A, and the surface facing toward the vehicle interior is defined as a design surface (the other panel surface, front surface) 20B. In addition, although the pillar garnish 20 illustrated in this embodiment is arranged on the right side of the vehicle interior, the same configuration shall be provided on the left side of the vehicle interior.

The main wall portion 21 has a plate shape that is elongated in the vertical direction, and has an opening 24 formed in the center thereof to expose the slide plate to the inside of the vehicle. Note that a shoulder belt anchor for inserting and fixing a seat belt is attached to the slide plate. A pair of attachment pieces 22 are provided at the lower end of the main wall portion 21 for attaching the pillar garnish 20 to the center pillar. A clip seat 51 is formed on the back surface (surface on the outside of the vehicle) of the upper end of the main wall portion 21 in a shape that projects toward the outside of the vehicle. The clip seat 51 can be engaged with a clip provided on the center pillar, whereby the pillar garnish 20 is held by the center pillar.

As shown in FIG. 1, FIG. 2, and FIG. It is assumed that it rises from the side edge toward the outside of the vehicle. Furthermore, a plurality of reinforcing ribs 49 are formed on each back surface of the side wall portions 25 and 26 in a line in the vertical direction. Furthermore, extending ribs 50 are formed on the back surfaces of each of the side walls 25 and 26, and extend along the respective side edges of the side walls 25 and 26. The extending rib 50 is provided to connect a plurality of reinforcing ribs 49 arranged in the vertical direction.

Further, the pillar garnish 20 includes a base material 30 containing fibers and a thermoplastic resin, and a resin molded body 40 containing a thermoplastic resin. In FIGS. 1 and 2, the portion of the pillar garnish 20 occupied by the resin molded body 40 is shown by hatching. The base material 30 is molded by press molding, which will be described later, and the resin molded body 40 is molded by injection molding, which will be described later.

Examples of the fibers included in the base material 30 include kenaf fibers, but the type of fibers is not limited thereto, and wood fibers, glass fibers, carbon fibers, and the like may also be used. Further, in the base material 30, the fibers are bound by thermoplastic resin. The thermoplastic resin contained in the base material 30 can be exemplified by polypropylene, and the thermoplastic resin contained in the resin molded body 40 can be exemplified by polypropylene, but is not limited thereto. Note that the thermoplastic resins used for the base material 30 and the resin molded body 40 may be the same material, or may be different materials.

FIG. 3 shows an overall view of the base material 30 according to this embodiment. The base material 30 is a plate-like member having an overall rectangular shape. The base material 30 is bent so that the inside of the vehicle is convex, and includes a base material main wall portion 34 that constitutes most of the main wall portion 21 (excluding the upper and lower ends), and a side wall portion. 25 (portions other than the upper end, lower end, and side edges), and the side wall portion 35 (portions other than the upper end, lower end, and side ends) constitutes the majority of the side wall portion 26. A base material side wall portion 36 is provided.

As shown in FIG. 4, the base material side wall portion 35 is bent with respect to the base material main wall portion 34 at the front end of the base material main wall portion 34 (the left side in FIG. 4, the end of the main wall portion 21). It has a shape that rises from the outside of the car. Further, the base material side wall portion 36 is bent with respect to the base material main wall portion 34 and stands up from the rear end portion of the base material main wall portion 34 toward the outside of the vehicle.

As shown in FIGS. 3 and 4, a portion of the base material side wall portion 35 is a base material recessed portion 35A having a smaller thickness than the other portion of the base material 30. As shown in FIGS. The base material concave portion 35A is arranged along the up-down direction with a constant width at the end portion of the base material side wall portion 35 on the vehicle outer side. The base material concave portion 35A has a concave shape on the side that becomes the design surface 20B, and has a small thickness. In addition, in the base material side wall part 36, the base material recessed part 36A provided with the structure similar to 35 A of base material recessed parts is formed.

The resin molded body 40 includes a first resin molded part 41 joined to the back surface 20A, a second resin molded part 42 joined to the design surface 20B, and a resin upper end part 44A forming the upper end part of the pillar garnish 20. The pillar garnish 20 includes a resin lower end portion 44B that constitutes a lower end portion of the pillar garnish 20, and resin extension portions 47 and 48 that constitute both ends of the pillar garnish 20 on the vehicle outer side. These are integrally molded by injection molding, which will be described later. Note that the reinforcing ribs 49 and the extending ribs 50 joined to the back surface 20A of the pillar garnish 20 together form the first resin molded part 41.

The first resin molded portion 41 is made of thermoplastic resin such as polypropylene. Further, the second resin molded part 42 is made of the same thermoplastic resin as the first resin molded part 41, and is a plate-shaped member that is joined so as to cover the base material recesses 35A and 36A from the design side. Further, the second resin molded portion 42 is connected (continuous) with the resin extension portions 47 and 48, respectively, at the end portion on the outer side of the vehicle.

When the thickness of the base material side walls 35 and 36 is D1, the thickness of the base material recesses 35A and 36A is D2, and the thickness of the second resin molded part 42 is D3, D1=D2+D3. In other words, in the designed surface 20B of the pillar garnish 20, there is no difference in thickness between the part where the second resin molded part 42 appears on the surface and the part where the base material side wall parts 35 and 36 appear on the surface, and the designed surface No unevenness has occurred on 20B.

Next, a molding device 70 for molding the pillar garnish 20 according to the present embodiment will be described. The molding device 70 includes a mold 71 and an injection device 78, as shown in FIG. The mold 71 includes a core mold 72, a cavity mold 73, and a slide mold 74. The core mold 72 and the cavity mold 73 are arranged facing each other, and can be moved toward or away from each other by a drive device (for example, an electric motor, an air cylinder, a hydraulic cylinder, etc.). This makes it possible to close and open the core mold 72 and the cavity mold 73. The injection device 78 is a device for pumping the molten resin to gates 76A, 76B, and 76C (see FIG. 1 for the gate 76A) provided in the mold 71, and injecting the molten resin into the molding space S2.

In the mold closed state shown in FIG. 8, the core mold 72, the cavity mold 73, and the slide mold 74 form a molding space S1 for molding the base material 30 and a molding space S2 for molding the resin molded body 40. Ru. The molten resin supplied from the injection device 78 (see FIG. 7) is injected into the molding space S2 via gates 76A, 76B, and 76C. Note that the injection device 78 is not shown in FIGS. 8 to 11.

Next, a method for manufacturing the pillar garnish 20 according to this embodiment will be described. The manufacturing method of the pillar garnish 20 according to the present embodiment includes a pre-board molding step S10 of molding a pre-board P1, which is a base material 30 before molding, and a pre-board molding step S10 of molding a pre-board P1, which is a base material 30 before molding, and press-molding the pre-board P1 using a core mold 72 and a cavity mold 73 to form a base material 30. and an injection molding step S30 of molding the resin molded body 40 in a form joined to the base material 30 by injecting molten resin into the molding space S2.

As shown in FIG. 6, in the preboard molding step S10, a rectangular fiber mat 80 made of fibers and thermoplastic resin is heated and pressed by a pair of opposing press molds 81 and 82. As a result, the fiber mat 80 is heated and compressed, and then the thermoplastic resin contained in the fiber mat 80 is cooled and solidified to form the preboard P1. The press die 81 has a flat press surface 81A, but the press die 82 has a press surface concave portion 82B and a press surface convex portion 82C which is higher than the press surface concave portion 82B by D4 on the press surface 82A. has. Note that the press surface 82A, the press surface concave portion 82B, and the press surface convex portion 82C are surfaces parallel to each other.

The press surface recess 82B is a band-shaped flat portion that crosses the press surface 82A when viewed from above. Further, the press surface convex portion 82C is a portion of the press surface 82A other than the press surface recess 82B, and is arranged to sandwich the press surface recess 82B from both sides. In the pre-board P1 formed by such a pair of press dies 81 and 82, the plate surface on the side that was in contact with the press surface 81A becomes flat. However, on the side of the plate surface that was in contact with the press surface 82A, there is a level difference between the part where the press surface recess 82B was in contact and the part where the press surface convex part 82C was in contact. The height will be D4. In the rectangular pre-board P1, a pre-board convex portion P1B, which is a thick portion extending in a band shape along the longitudinal direction, and a pre-board concave portion P1A are formed so as to sandwich the pre-board convex portion P1B from both sides.

In the base material molding step S20 executed after the preboard molding step S10, as shown in FIG. 7, the heated and softened preboard P1 is first placed between the core mold 72, the slide mold 74, and the cavity mold 73. Subsequently, as shown in FIG. 8, by closing the core mold 72 and the cavity mold 73, the pre-board P1 is press-molded by the molding surfaces of the core mold 72, the slide mold 74, and the cavity mold 73. As a result, the pre-board P1 press-molded by the mold 71 has a shape that follows the shape of the molding space S1, and becomes the base material 30.

In the injection molding step S30 executed after the base material molding step S20, as shown in FIG. Molten resin (for example, polypropylene) is injected into a molding space S2 formed by both molds 71. In the process of filling the molding space S2 with the molten resin, the molten resin penetrates into the fibers of the base material 30 at the contact points with the base material 30. At the same time, the molten resin that has penetrated into the inside of the fibers mixes with the softened thermoplastic resin inside the base material 30, and is harmoniously integrated (mixed).

Specifically, in the injection molding step S30, the molten resin supplied from the injection device 78 is injected into the molding space S2 from three gates 76A, 76B, and 76C provided in the mold 71. In FIG. 1, the positional relationship between the resin molded body 40 and each gate 76A, 76B, 76C is illustrated by showing each gate 76A, 76B, 76C as a dot. As shown in Figure 1,
The gate 76A supplies molten resin to the molding space S2 mainly for molding the resin upper end portion 44A. Further, the gates 76B and 76C are the molding space S2 for mainly molding the first resin molded part 41, the second resin molded part 42, the resin lower end part 44B, and the resin extension parts 47 and 48 in the molding space S2. Supply molten resin to.

Thereafter, when the temperature of the molten resin decreases, the molten resin filled in the molding space S2 solidifies and becomes the resin molded body 40 joined to the base material 30. For example, the second resin molded portion 42 is molded while being joined to the base material recesses 35A and 36A.

Then, as shown in FIG. 10, the slide mold 74 is moved so that the undercut portion (for example, the extended rib 50) of the pillar garnish 20 can be cut out, and as shown in FIG. By pushing out the pillar garnish 20 using the extrusion pin 77 that has been pushed out, the pillar garnish 20 can be die-cut. In subsequent steps, processing such as providing an opening 24 is performed, and the pillar garnish 20 is completed.

Next, the functions and effects of the configuration according to this embodiment will be explained. The pillar garnish 20 according to the present embodiment includes a plate-shaped base material 30 containing fibers and a thermoplastic resin, and a resin molded body 40 containing the thermoplastic resin. It has a first resin molded part 41 joined to the design surface 20A and a second resin molded part 42 joined to the design surface 20B of the base material 30.

Generally, the shrinkage rate of the resin molded body 40 containing a thermoplastic resin is larger than that of the base material 30 containing fibers and a thermoplastic resin. Therefore, as in the configuration shown in FIG. Stress is generated at the bonding surface during the subsequent process of temperature changes and changes over time due to crystallization of the thermoplastic resin, causing the pillar garnish 120 to deform. For example, it is conceivable that the base material side wall portions 135 and 136 are curved so as to bulge toward the inside of the vehicle when viewed from above and below. Furthermore, since the side wall portions 125 and 126 have a continuous long bonding surface along the vertical direction of the pillar garnish 120, the portions of the side walls 125 and 126 on the vehicle side are easily deformed due to stress generated due to temperature changes and the like. Specifically, it is conceivable that the side wall portion 125 and the side wall portion 126 may bulge out toward the front and the rear, respectively, when viewed from inside the vehicle.

Therefore, in the pillar garnish 20 according to the present embodiment, as shown in FIG. 4, in addition to the first resin molded part 41 being joined to the back surface 20A, the second resin molded part 42 is joined to the design surface 20B, Bonding surfaces are arranged on both sides of the base material 30, respectively. As a result, the stress generated at each joint surface cancels out each other, and deformation of the pillar garnish 20 is suppressed. Note that the thermoplastic resin contained in the base material 30 and the thermoplastic resin contained in the resin molded body 40 may be the same material or may be different materials.

Furthermore, the second resin molded portion 42 may be joined to the first resin molded portion 41 at a position symmetrical to the base material 30 .

In this way, the stress generated on either the design surface 20B side or the back surface 20A side is canceled out by the stress generated on the other bonding surface placed at a symmetrical position with the base material 30 in between. It will be done. In other words, since stress is canceled out within the region sandwiched between both bonding surfaces, other regions of the pillar garnish 20 are less likely to be affected by stress. Thereby, deformation of the pillar garnish 20 can be further suppressed.

The design surface 20B has base material recesses 35A and 36A formed by making the thickness smaller than other parts of the base material 30, and the second resin molded part 42 fills the base material recesses 35A and 36A. The base material recesses 35A and 36A can be joined in such a manner that

In this way, the second resin molded part 42 can be configured by appropriately changing the size (area in plan view and depth of the base material recesses 35A, 36A) and shape of the base material recesses 35A, 36A. The amount and shape of thermoplastic resin can be adjusted. Thereby, the magnitude of the stress generated due to the second resin molded part 42 can be adjusted as appropriate, and can be balanced with the stress caused by the first resin molded part 41. Thereby, deformation of the pillar garnish 20 due to temperature changes and the like can be further suppressed.

Further, in such a configuration, the second resin molded part 42 is joined to the base material recesses 35A and 36A, which are thinner than other parts of the base material 30. Therefore, the difference in thickness between the portion of the pillar garnish 20 where the second resin molded portion 42 is arranged and the other portions can be reduced or eliminated. Thereby, design constraints on the design surface 20B due to the presence of the second resin molded portion 42 can be suppressed or eliminated.

Next, a method for manufacturing the pillar garnish 20 according to this embodiment will be described. The method for manufacturing the pillar garnish 20 according to the present embodiment includes a preboard molding step S10 in which a plate-shaped preboard P1 containing fibers and a thermoplastic resin is molded by a pair of press molds 81 and 82, and a preboard molding step S10 that is executed after the preboard molding step S10. , a base material molding step S20 in which the preboard P1 is press-molded by the mold 71 to form the base material 30, and a molten resin is poured into the molding space S2 inside the closed mold 71, which is executed after the base material molding step S20. an injection molding step S30 in which a resin molded body 40 is molded by injection; It is characterized in that it is bonded to the base material 30.

In the method for manufacturing the pillar garnish 20 having such a configuration, the first resin molded part 41 and the second resin molded part 42 molded in the injection molding step S30 are joined at positions sandwiching the base material 30, respectively. In this way, during the cooling process after the injection molding step S30, the stresses generated at the respective joint surfaces are in opposite directions and cancel each other out, so that deformation of the pillar garnish 20 is suppressed.

In the pre-board forming step S10, the pair of press molds 81 and 82 have at least one press surface convex portion 82C on at least one press surface 81A or 82A, which is convex toward the other press surface. By pressing the press surface convex portion 82C against the pre-board P1, a pre-board recess P1A is formed in a part of the pre-board P1, and in the base material forming step S20, the pre-board recess P1A is press-molded by the mold 71. These can serve as base material recesses 35A and 36A in the base material 30.

In this way, in the pre-board forming process S10, the pre-board recess P1A is formed in the part where the press surface convex part 82C is pressed, and the pre-board recess P1A is larger than the other part of the pre-board P1 (pre-board convex part P1B). The thickness becomes smaller. Then, in the subsequent base material molding step S20, the base material 30 is molded based on the preboard P1, and the preboard recesses P1A become the base material recesses 35A and 36A in the base material 30.

That is, by forming the press surface convex portions 82C on the press molds 81 and 82 in advance, there is no need for a separate step of forming the base material concave portions 35A and 36A. Thereby, deformation can be further suppressed without increasing the number of steps in manufacturing the pillar garnish 20.

<Other embodiments>
The present invention is not limited to the embodiments described above and illustrated in the drawings; for example, the following embodiments are also included within the technical scope of the present invention; It can be implemented with various modifications.

(1) In the embodiment described above, the base material recesses 35A, 36A are arranged at the end portions of the base material 30 on the outer side of the vehicle, but the positions of the base material recesses 35A, 36A are not limited thereto. For example, the base material recesses 35A, 36A may be arranged at arbitrary positions on the base material side walls 35, 36 or at arbitrary positions on the base material main wall part 34.

(2) In the above embodiment, the press surface 82A, the press surface recess 82B, and the press surface convex portion 82C are each flat, but cases where these are not flat are also included in the technical scope of the present invention. For example, each press surface may have a wavy shape or may have fine grooves formed therein.

(3) In the above embodiment, the press surface 81A, the press surface concave portion 82B, and the press surface convex portion 82C are parallel to each other, but these surfaces may not be parallel but may be inclined to each other. .

(4) In the above embodiment, a step is formed between the press surface concave portion 82B and the press surface convex portion 82C, but the step may not exist. For example, the press surfaces 82B and 82C having different heights may be connected by a gently curved surface.

20... Pillar garnish (molded structure), 20A, 120A... Back surface (one plate surface), 20B, 120B... Design surface (other plate surface, front surface), 21... Main wall portion, 25, 125, 26, 126 ...Side wall part, 30,130...Base material, 35,135,36,136...Base material side wall part 35A, 36A...Base material recessed part, 40...Resin molded body, 41...First resin molded part, 42...Second resin Molded portion, 47, 48...Resin extension portion, 49...Reinforcement rib, 50...Extension rib, D1...Thickness of base material side wall portions 35, 36, D2...Thickness of base material recessed portions 35A, 36A, D3...Second Thickness of resin molded part 42

Claims (2)

a plate-shaped base material containing fibers and thermoplastic resin;
A resin molded body containing a thermoplastic resin,
The resin molded body is
a first resin molded part joined to one plate surface of the base material;
A pillar garnish for a vehicle comprising a molded structure having a second resin molded part joined to the other plate surface of the base material,
The main wall has a plate shape that is long in the vertical direction;
a pair of side walls extending outward from the left and right ends of the main wall,
The back surface of the side wall portion is provided with a plurality of reinforcing ribs arranged in the vertical direction, and an extending rib extending along the vertical direction and connecting the plurality of reinforcing ribs arranged in the vertical direction,
The reinforcing rib and the extending rib constitute the first resin molded part,
The base material includes a base main wall part that constitutes the main wall part, and a base material side wall part that constitutes the side wall part,
The base material side wall part is a recessed part in which a surface on the side that becomes the designed surface of the pillar garnish is partially recessed at the vehicle outer side end of the base material side wall part, and the thickness is smaller than the other part. Equipped with a base material recess,
A pillar garnish for a vehicle, wherein the second resin molded part is joined to the base material recess in a manner that the second resin molded part is filled in the base material recess. The vehicle pillar garnish according to claim 1 , wherein the second resin molded part is joined to the first resin molded part at a symmetrical position with the base material in between.

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