JP6791073B2 - Decorative material - Google Patents

Description

The present invention relates to a decorative member having a decorative layer formed by hot stamping.

The radiator grill of the vehicle is arranged at the front end of the vehicle and has a function of a ventilation port for applying a running wind to the radiator arranged at the back thereof. Because of this role, the radiator grille is formed in a louver shape or a mesh shape, and the gap is a ventilation port. The radiator grill is a part arranged on the front surface of the vehicle, and is required to have a high degree of design. In response to the demand for design, the louver-shaped or mesh-shaped front end portion (tip surface) is decorated.

As a method of decorating the radiator grill, there is a method of forming a decorative layer by hot stamping on the surface to be decorated located at the front end portion of the grill (resin molded product). In the hot stamp, the transfer sheet is placed along the surface of the surface to be decorated, the pressed body in the heated state is pressed (heating and pressurizing), and the foil of the transfer sheet is transferred to the surface to be decorated to form the decoration layer. It is a method of forming.

The hot stamp is disclosed in Patent Document 1, for example. In Patent Document 1, a stamp plate (pressing body) in a heated state is pressed against a decorated member having a decorated surface (a grill on which a decorative layer is not formed) via a transfer sheet to be decorated. It is described that the foil of the transfer sheet is thermally transferred to the surface.

Japanese Unexamined Patent Publication No. 2016-145052

However, since hot stamping is a manufacturing method in which the foil of the transfer sheet is thermally transferred, the edges of the heat-transferred decorative layer tend to be non-uniform (also referred to as poor parting). The non-uniform end of the decorative layer is a state in which the end of the decorative layer varies from a desired state. For example, when a decorative layer is manufactured by hot stamping so that the ends form a straight line, the ends of the decorative layer cannot form a straight line and form a fine wavy shape (a jagged shape of about several tens of μm). There is. This is because the direction in which the decorative surface of the decorative member and the stamp plate are in pressure contact with each other is displaced at the end of the decorative layer due to the elasticity of the stamp plate. If the edges of the decorative layer become non-uniform, the shape of the decorative layer becomes non-uniform, and when the grill is visually recognized, the parting of the decorative layer deteriorates, resulting in deterioration of the design.
The present invention has been made in view of the above circumstances, and it is intended to provide a decorative member having a decorative layer formed by hot stamping, which is suppressed in deterioration of design. Make it an issue.

The decorative member of the present invention that solves the above problems has a protruding portion having a protruding shape whose tip surface is a surface to be decorated, and a decorative layer formed by hot stamping on the surface to be decorated. A decorative member having a decorative base material and a surface member on which a through hole is formed, which is arranged at a distance from the decorative base material at the tip of the protruding portion in the protruding direction, and the through hole is a protruding portion. It is characterized in that it is projected onto the decorative layer when projected backward in the direction.

In the decorative member of the present invention, when the through hole of the surface member is projected to the rear in the protruding direction (that is, the decorative base material), the through hole is projected on the decorative layer. In this state, when the decorative member is viewed from the surface member side, the decorative layer (specifically, the portion projected by the through hole of the decorative layer) can be visually recognized through the through hole. That is, the decorative member can obtain a high design property of the decorative layer.

Then, the surface member suppresses the direct visibility of the decorative base material in the portion other than the through hole. As a result, when the decorative member is viewed from the surface member side, the portion where the through hole is not projected on the decorative layer is not directly visible.
As a result, in the decorative base material of the present invention, even if the decorative member is provided with the decorative layer formed by hot stamping, the deterioration of the design is suppressed.

In the decorative member of the present invention, it is preferable that the surface member is a plate-shaped member having through holes. According to this configuration, even if the decorative member (or the decorative base material) becomes large, a large number of through holes can be easily formed.

In the decorative member of the present invention, it is preferable that the through holes are projected only on the decorative layer. According to this configuration, when the decorative member is viewed from the surface member side, only the decorative layer is visible from the through hole, and the design is further improved.

In the decorative member of the present invention, it is preferable that the decorative base material and the surface member are arranged at intervals of 5 to 20 mm in the protruding direction. According to this configuration, the surface member and the decorative base material are separated from each other by a predetermined distance to ensure a sense of depth and further improve the design.
Further, by separating the surface member and the decorative base material at a predetermined distance, the air permeability from the surface member to the decorative base material is ensured while suppressing the visible edge of the decorative layer. Can be done.

In the decorative member of the present invention, the protruding portion spreads along the direction perpendicular to the protruding direction, and the corner portion where the tip surface intersects the outer peripheral surface of the protruding portion forms a smooth R shape. It is preferably formed.
According to this configuration, the tip surface extends along the direction perpendicular to the projecting direction, and when the decorative layer is formed by hot stamping, the entire surface of the tip surface can be uniformly pressed. As a result, uneven pressure of the formed decorative layer is suppressed, and deterioration of design is suppressed.

In the decorative member of the present invention, it is preferable that the end portion of the decorative layer is located on the outer peripheral surface side of the central portion of the R-shaped curve at the corner portion. According to this configuration, when the decorative member is viewed from the surface member side, the end portion of the decorative layer is less likely to be visually recognized through the through hole, and the deterioration of the design is further suppressed.

The decorative member of the present invention is preferably a grill for vehicles. According to this configuration, a decorative layer can be formed with an inexpensive hot stamp, and an inexpensive grill can be obtained.

It is a front view of the radiator grill of Embodiment 1. FIG. 2 is a cross-sectional view taken along the line II-II in FIG. It is a cross-sectional view taken along the line III-III in FIG. It is a partially enlarged front view of the radiator grill of Embodiment 1. It is a cross-sectional view taken along the line VV in FIG. It is a partially enlarged sectional view of the radiator grill of Embodiment 2. It is a partially enlarged sectional view of the radiator grill of Embodiment 3.

Hereinafter, the decorative member of the present invention will be specifically described using the embodiment, using the embodiment applied to the radiator grill for a vehicle. It should be noted that the embodiment shows one embodiment for specifically explaining the present invention, and the present invention is not limited to the embodiment.

[Embodiment 1]
The radiator grill 1 (hereinafter referred to as the grill 1) of the present embodiment has a shape that spreads in the width direction of the vehicle (left-right direction in FIG. 1) as shown in the front view in FIG. FIG. 1 is a front view of the grill 1 as viewed from the front side of the vehicle.

As shown in the cross-sectional view of FIGS. 2 to 3, the grill 1 has a decorative base material 2 and a surface member 3, and the surface member 3 is arranged on the front side of the vehicle of the decorative base material 2. There is. Note that FIG. 2 is a diagram showing a cross section taken along line II-II in FIG. FIG. 3 is a diagram showing a cross section taken along line III-III in FIG.

The decorative base material 2 is a decorative layer 23 formed by hot stamping on a base material base 20, a protruding portion 21 protruding from the base material base 20 toward the front side of the vehicle, and a tip surface 22 of the protruding portion 21 in the protruding direction. And have. The decorative base material 2 has a plurality of base material bases 20 in a state of maintaining a predetermined interval in the width direction. Ventilation holes 24 are formed between the plurality of base materials 20.

As shown in the cross-sectional view of FIGS. 2 to 3, the base material base portion 20 has a substantially strip shape extending in a state of being inclined at a predetermined angle (45 ° in this embodiment) with respect to the vertical direction of the vehicle. The base material 20 has a front surface facing the front side of the vehicle and a back surface facing the rear side of the vehicle. A plurality of projecting portions 21 projecting toward the front of the vehicle are formed on the surface of the base material base portion 20. That is, the projecting portion 21 is formed so as to project in the vertical direction from the surface of the base material base portion 20.
The protruding portion 21 is a portion that protrudes from the surface of the strip-shaped base material base 20 toward the front side of the vehicle. A plurality of projecting portions 21 are provided at predetermined intervals in the extending direction of the strip-shaped base material base 20 (the strip-shaped longitudinal direction).

As shown in FIGS. 2 to 3, the projecting portion 21 projects from the base material base 20 in a state in which the cross-sectional shape is substantially constant. The protruding tip surface 22 of the protruding portion 21 has a quadrangular shape (square shape, rhombus shape). The tip surface 22 of the projecting portion 21 (that is, the cross-sectional shape perpendicular to the projecting direction of the projecting portion 21) has a square shape in which the length in the width direction of the strip-shaped base material base 20 is the length of one side. ..
The tip surface 22 of the projecting portion 21 forms a plane perpendicular to the projecting direction.
That is, the protruding portion 21 has a columnar shape (square columnar shape) protruding in the protruding direction from the surface of the strip-shaped base material base portion 20.
The protruding height of the protruding portion 21 protruding from the surface of the base material base 20 is not limited. The height of the grill 1 can be set so as to ensure the design and the like.

A decorative layer 23 formed by hot stamping is formed on the tip surface 22 of the protruding portion 21. The decorative layer 23 is formed on the entire surface of the tip surface 22. That is, the decorative layer 23 is formed up to the corner of the tip surface 22 of the protruding portion 21.

The decorative layer 23 is a thin layer (also referred to as a thin film layer or a coating layer) forming a design surface formed by hot stamping. As long as the decorative layer 23 is formed by hot stamping, other specific configurations are not limited. In the decorative layer 23, the transfer sheet is placed along the tip surface 22 of the protrusion 21 of the decorative base material 2, and the pressed body in the heated state is pressed (heated and pressurized), and the foil of the transfer sheet is pressed onto the tip surface 22. Formed by hot stamping to transfer to.
The decorative base material 2 may have a translucent to transparent protective layer on its surface. In particular, by having the protective layer on the surface of the decorative layer 23, it is possible to prevent the decorative layer 23 from being damaged even if a foreign substance that has passed through the through hole 30 collides with the decorative layer 23, and the design of the decorative layer 23 is deteriorated. It can be suppressed.

The surface member 3 is a member arranged on the front side of the protruding portion 21 of the decorative base material 2 in the protruding direction (that is, the front side of the vehicle) at a distance from the decorative base material 2. As shown in FIG. 1, the surface member 3 is arranged so as to cover the front side of the decorative base material 2. The surface member 3 is a plate-shaped member having a large number of through holes 30 opened. As shown in FIG. 1, the surface member 3 has a substantially grid-like portion in which a large number of through holes 30 are not opened. The surface member 3 is made of a plate-shaped member having an opening through hole 30, but may be formed by combining a plurality of members. For example, rod-shaped members may be combined in a grid pattern to form a grid.

The surface member 3 is preferably formed to be translucent or opaque, and is opaque in this embodiment. As a result, it is possible to prevent the rear member (that is, the decorative base material 2) from being visually recognized in the portion other than the through hole 30.
The surface member 3 may be provided with a structure other than the through hole 30 to further enhance the design such as a decorative layer and a design expression.

As shown in FIGS. 2 to 3, the through hole 30 is formed so as to penetrate the surface member 3 in the thickness direction (that is, the front-rear direction of the vehicle). The through hole 30 is partitioned by an inner peripheral surface 31 whose inner diameter of the hole is reduced from the front side to the rear side of the vehicle. That is, the inner peripheral surface 31 is formed so as to form an inclined surface that is inclined with respect to the protruding direction of the protruding portion 21. As shown in FIGS. 1 to 4, the through hole 30 has an opening shape on the front surface 32 of the front surface member 3 larger than the opening shape on the back surface 33.

As shown in FIGS. 1 to 4, the through hole 30 is opened at a position corresponding to the protruding portion 21 (that is, the tip surface 22 and the decorative layer 23) of the decorative base material 2. The position corresponding to the protruding portion 21 means that when the through hole 30 is projected to the rear of the protruding portion 21 in the protruding direction (that is, the decorative base material 2), the protruding portion 21 (tip surface 22 and decorative layer 23) is projected. ) Is the position projected on. FIG. 4 is an enlarged view (front view seen from the front of the vehicle) of the vicinity of one of the through holes 30 of the surface member 3 of the grill 1.
The inner peripheral shape (opening shape on the front surface 32 and opening shape on the back surface 33) of the through hole 30 is not limited. In this embodiment, as shown in FIGS. 1 and 4, it has a quadrangular shape (square shape, rhombus shape).
As shown in FIG. 5, the through hole 30 is opened so that its center coincides with the center of the protruding portion 21 (that is, the tip surface 22 and the decorative layer 23) of the decorative base material 2. FIG. 5 is a diagram showing a cross section taken along line VV in FIG.

The end of the opening 34 on the back surface 33 of the through hole 30 is formed so as to be projected onto the decorative layer 23 as shown in FIGS. 4 to 5. Specifically, it is formed so that the entire circumference of the projected opening 34 of the through hole 30 is projected only on the decorative layer 23. The outer peripheral shape of the decorative layer 23 is shown by a broken line in FIG. In this embodiment, when the through hole 30 is projected onto the decorative base material 2, the hole 30 is located inside surrounded by the end portion of the decorative layer 23.

As shown in FIG. 5, the through hole 30 has an opening 34 on the back surface 33 located at a predetermined distance L1 from the end portion of the decorative layer 23 and inside (center side) of the end portion. The specific numerical value of the predetermined distance L1 is not limited. In this embodiment, it is preferably 0 mm or more. When L1 is within this range, the end portion of the decorative layer 23 is less likely to be visually recognized when the grill 1 is viewed from the front side of the vehicle. That is, the design of the vehicle as a radiator grill can be improved. L1 is more preferably 0.3 mm or more, and further preferably 0.8 to 1.2 mm.
If L1 becomes excessively large, the opening area of the through hole 30 may decrease as a result, and the air permeability of the radiator grill may decrease.

As shown in FIG. 5, the surface member 3 is arranged at a predetermined distance L2 from the decorative base material 2. Specifically, the back surface 33 of the front surface member 3 and the tip surface 22 (that is, the decorative layer 23) of the projecting portion 21 of the decorative base material 2 are in the projecting direction of the projecting portion 21 (that is, the front-rear direction of the vehicle). ), They are arranged at intervals of L2.

The specific numerical value of the predetermined distance L2 is not limited. In this embodiment, it is preferably 5 to 20 mm. When L2 is within this range, both the function as a radiator grill of the vehicle and the design can be achieved. If it is less than 5 mm, the distance between the surface member 3 and the decorative base material 2 becomes too short, and the air permeability of the radiator grille decreases. If it exceeds 20 mm, the end portion of the decorative layer 23 becomes easily visible. L2 is more preferably 3 to 10 mm.

(Effect of this form)
The grill 1 of the present embodiment has a decorative base material having a protruding portion 21 having a protruding shape in which the tip surface 22 serves as a decorated surface, and a decorative layer 23 formed on the decorated surface by hot stamping. It has 2 and a surface member 3 having a through hole 30 formed therein, which is arranged at a distance from the decorative base material 2 at the tip of the protruding portion 21 in the protruding direction. Then, the through hole 30 is projected onto the decorative layer 23 when projected backward in the projecting direction.

According to this configuration, first, in the grill 1 of the present embodiment, when the surface member 3 is projected onto the decorative base material 2, the through holes 30 are projected onto the decorative layer 23. In this state, when the grill 1 is viewed from the front of the vehicle along the projection direction, the decorative layer 23 can be visually recognized through the through hole 30. That is, the decorative layer 23 of the grill 1 can be visually recognized, and the grill 1 can obtain the high design of the decorative layer 23.

Since the grill 1 of the present embodiment has the surface member 3, it is suppressed that the decorative base material 2 is directly visible in the portion other than the through hole 30. As a result, when the grill 1 is viewed from the front of the vehicle, the end portion of the decorative layer 23 is prevented from being directly visible. As a result, the grill 1 of the present embodiment includes the decorative layer 23 formed by hot stamping, and even when the end of the decorative layer 23 is wavy, the end is visually recognized. The deterioration of the design of the grill 1 is suppressed.

In the grill 1 of the present embodiment, the surface member 3 is a plate-shaped member through which the through hole 30 is opened. According to this configuration, even if the grill 1 (or the decorative base material 2) is enlarged, the surface member 3 having a large number of through holes 30 can be easily obtained.
Further, the surface member 3 can be easily assembled to the decorative base material 2, and the man-hours (cost) required for manufacturing the grill 1 can be reduced.
That is, as the grill 1 of the present embodiment, even if the grill 1 is provided with the decorative layer 23 formed by hot stamping, it is possible to easily obtain a grill 1 in which deterioration in design is suppressed.

In the grill 1 of the present embodiment, the through hole 30 is projected only on the decorative layer 23. According to this configuration, when the grill 1 is viewed from the front side of the vehicle, only the inside surrounded by the end portion of the decorative layer 23 is visible from the through hole 30, and the deterioration of the design is surely suppressed. Be done.

In the grill 1 of the present embodiment, the decorative base material 2 and the surface member 3 are arranged at intervals of 5 to 20 mm in the protruding direction. According to this configuration, the decorative base material 2 and the surface member 3 are separated from each other by a predetermined distance, so that a sense of depth can be secured and the design is further improved.
Further, since the surface member 3 and the decorative base material 2 are provided with a predetermined interval, sufficient air permeability as the grill 1 can be ensured.
In the grill 1 of this embodiment, the decorative layer 23 of the decorative base material 2 can be formed by hot stamping, which is an inexpensive method as compared with a method such as plating. From this, the effect of becoming an inexpensive grill 1 having excellent design is exhibited.

[Embodiment 2]
This embodiment is the same grill 1 as in the first embodiment except that the protrusions 21 of the decorative base material 2 and the decorative layer 23 are different in form.

In the grill 1 of this embodiment, as shown in FIG. 6, the corner portion 25 of the protruding portion 21 has a curved R shape. That is, the cross-sectional shape of the corner portion 25 is formed so as to form a smooth arc shape. More specifically, the protruding portion 21 has a tip surface 22, a corner portion 25, and an outer peripheral surface 26. FIG. 6 is an enlarged cross-sectional view showing the vicinity of the through hole 30 of the grill 1 of the present embodiment, as in FIG.

The tip surface 22 is located at the tip of the protruding portion 21 in the protruding direction, and forms a flat surface extending along a direction perpendicular to the protruding direction of the protruding portion 21.
The outer peripheral surface 26 is a side surface of the protruding portion 21 along the circumferential direction.
The corner portion 25 is a portion that connects the front end surface 22 and the outer peripheral surface 26. As shown in FIG. 6, the corner portion 25 has an arcuate cross-sectional shape. The arcuate surface of the corner 25 is an arcuate surface at an angle of 90 ° around the center of the radius of curvature. Specifically, the end portion 27 on the tip surface 22 side of the corner portion 25 and the end portion 28 on the outer peripheral surface 26 side of the corner portion 25 are displaced by 90 ° with respect to the center of the radius of curvature of the corner portion 25. In position. In the grill 1 of the present embodiment, the corner portion 25 preferably has a radius of curvature of the corner portion 25 of 0.3 to 0.8 mm (R0.3 to 0.8).

The end of the decorative layer 23 is located in the middle of the curved surface of the corner 25. The end portion of the decorative layer 23 is located on the outer peripheral surface 26 side of the central portion of the R-shaped curve of the corner portion 25. More specifically, when the end 27 is 0 ° and the end 28 is 90 °, the angular position in the circumferential direction is 45 ° or more. In the decorative layer 23, the angular position of the corner portion 25 is preferably 45 ° or more, and more preferably 90 °. That is, it is preferable that the decorative layer 23 covers the arc surface of the corner portion 25.

In the present embodiment, when the through hole 30 is projected onto the protrusion 21, the end portion 27 of the tip surface 22 is at a position that coincides with the opening 34 of the through hole 30. That is, the opening 34 of the through hole 30 is located ahead of the end 27 in the protruding direction of the protruding portion 21.
Also in this embodiment, as shown in FIG. 6, the through hole 30 of the surface member 3 is projected only on the decorative layer 23 when projected rearward in the protruding direction.

(Effect of this form)
Also in this embodiment, the same effect as that of the first embodiment is exhibited.
Further, in the grill 1 of the present embodiment, the protruding portion 21 spreads along the direction perpendicular to the protruding direction of the tip surface 22, and the corner portion 25 at which the tip surface 22 intersects the outer peripheral surface 26 of the protruding portion 21 is smooth. It is formed so as to form an R shape.
In the grill 1 of the present embodiment, the end portion of the decorative layer 23 is closer to the outer peripheral surface 26 side of the protruding portion 21 (that is, the base end side in the protruding direction of the protruding portion 21) than the central portion of the R-shaped curve of the corner portion 25. ) Is located.

According to this configuration, the tip surface 22 extends along the direction perpendicular to the projecting direction, and when the decorative layer 23 is formed by hot stamping, the entire surface of the tip surface 22 can be uniformly pressed. As a result, uneven pressure of the formed decorative layer 23 is suppressed, and deterioration of the design is suppressed.

Further, since the protruding portion 21 has a tapered shape as a whole, the moldability in resin molding is improved. That is, the decorative base material 2 can be easily manufactured. Further, in the grill 1, the wind that has passed through the ventilation hole 30 is guided to the curved corner portion 25, so that the wind can flow more easily through the ventilation hole 24. That is, the decrease in the air permeability of the grill 1 is suppressed.

The end of the decorative layer 23 overlaps the corner 25, and the end of the decorative layer 23 is on the outer peripheral surface 26 side (that is, the protruding portion 21) of the protruding portion 21 from the center of the R-shaped curve. It is located on the base end side in the protruding direction of. According to this configuration, even when the protruding portion 21 is viewed from the front side of the vehicle, the end portion of the decorative layer 23 is more difficult to see because it is located in the middle of the curve.
Further, the end portion of the decorative layer 23 is located on the outer peripheral surface 26 side (45 ° or more in FIG. 6) of the protruding portion 21 from the central portion of the curvature. The portion of the protrusion 21 on the outer peripheral surface 26 side from the center of the curve is visible from the tangential direction when the grill 1 is viewed from the front side of the vehicle (when viewed from the front). .. Even if the end portion of the decorative layer 23 is wavy, the amplitude of the wave appears to be small (the deterioration of the design is suppressed).
As a result, even if the direction in which the grill 1 is visually recognized from the front of the vehicle is deviated and a part of the end portion of the decorative layer 23 is visible, the deterioration of the design is suppressed.

[Embodiment 3]
This embodiment is the same grill 1 as in the second embodiment except that the shape of the corner portion of the protruding portion 21 of the decorative base material 2 is different.

As shown in FIG. 7, the corner portion 25 of the present embodiment forms a flat surface connecting the front end surface 22 and the outer peripheral surface 26. This is a so-called C chamfered state. FIG. 7 is an enlarged view of the vicinity of the through hole 30 of the grill 1 of the present embodiment, as in FIG.
Also in this embodiment, even if the surface of the corner portion 25 changes from a curved shape to a planar shape, the same effect as that of the second embodiment is exhibited.
In the present embodiment, the surface of the corner portion 25 has a flat shape, the ventilation resistance can be reduced as compared with the case of the curved shape having a convex shape, and the air passing through the through hole 30 can be guided by the ventilation hole 24. That is, the grill 1 of this embodiment is a grill 1 having more excellent breathability.

1: Radiator grill 2: Decorative base material 20: Base material base 21: Protruding part 22: Tip surface 23: Decorative layer 24: Ventilation hole 25: Corner part 26: Outer peripheral surface 27, 28: End part 3: Surface member 30: Through hole 31: Inner peripheral surface 32: Front surface 33: Back surface 34: Opening

Claims (6)

A decorative base material having a protruding portion (21) having a protruding shape whose tip surface (22) is a surface to be decorated, and a decorative layer (23) formed on the surface to be decorated by hot stamping. (2) and
A surface member (3) having a through hole (30) formed at a distance from the decorative base material (2) at the tip of the protruding portion (21) in the protruding direction.
It is a decorative member (1) having
The decorative member (1) is characterized in that the through hole (30) is projected only on the decorative layer (23) when projected rearward in a direction along the protruding direction. The decorative member according to claim 1, wherein the surface member (3) is a plate-shaped member through which the through hole (30) opens. The decorative member according to any one of claims 1 to 2 , wherein the decorative base material (2) and the surface member (3) are arranged at intervals of 5 to 20 mm in the protruding direction. In the protruding portion (21), the tip surface (22) spreads along a direction perpendicular to the protruding direction, and the tip surface (22) intersects the outer peripheral surface (26) of the protruding portion (21). The decorative member according to any one of claims 1 to 3 , wherein the corner portion (25) is formed so as to form a smooth R shape. The decorative member according to claim 4 , wherein the end portion of the decorative layer (23) is located on the outer peripheral surface side of the central portion of the R-shaped curve of the corner portion (25). The decorative member according to any one of claims 1 to 5 , which is a grill for a vehicle.

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