JP2774015B2 - Vehicle wheel cover and method of manufacturing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheel cover for a vehicle and a method of manufacturing the same, and more particularly to a wheel cover having a pattern on the surface thereof and a method of manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, a pattern to be attached to a wheel cover for a vehicle is formed by drawing a pattern with a mask or the like after forming the wheel cover main body, or by forming a pattern portion of the wheel cover main body to have a three-dimensional appearance. Formed by injection molding or the like. The former, in which a pattern is drawn by painting or the like, has a poor three-dimensional effect, and it is difficult to create an excellent three-dimensional pattern for a wheel cover. When the wheel cover body is formed into an uneven shape by injection molding or the like, the three-dimensional appearance of the three-dimensional shape is naturally three-dimensional. It was not easy. Furthermore, when the wheel cover body is formed into an uneven shape by injection molding of a synthetic resin or the like, a flow mark or weld is formed on the surface of the wheel cover body by passing the resin through an injection mold corresponding to the uneven portion. Lines are easily generated, and the mechanical strength is reduced at the portion where the weld line is generated, and the flow mark portion has a disadvantage in that the appearance is impaired.

[0003]

SUMMARY OF THE INVENTION The object of the present invention is to solve the above-mentioned drawbacks in forming irregularities by injection molding, the problem of removing dirt, and the problem of lowering mechanical strength.

[0004]

In order to solve the above-mentioned problems, a wheel cover for a vehicle according to the present invention comprises a plurality of fine flake-like magnets formed on a flat portion of a surface of a wheel cover body formed in a substantially disk shape. A pattern having a contour of a predetermined shape is formed on a flat portion of the surface of the wheel cover main body by a transparent or translucent coating film in which a body is mixed, and the direction of the magnetic substance in the coating film is substantially at a center portion of the contour. Substantially parallel to the surface of the coating, facing in a direction substantially intersecting with the surface of the coating on both sides of the contour, the contour on the flat surface protrudes as compared with other parts, or Recognizable as if retreating.

A method of manufacturing a vehicle wheel cover according to the present invention is directed to a transparent or translucent liquid in which a large number of fine flake-like magnetic materials are mixed on the surface of a vehicle wheel cover body formed in a substantially disk shape. A step of applying paint, before or after the step, when the magnetic substance in the paint is in a movable state, at a predetermined radius from the center of the wheel cover main body and at equal intervals in the circumferential direction. And a portion oriented in a direction substantially parallel to the surface of the coating film, and this portion forms a magnetic field that generates lines of magnetic force delineating a predetermined shape on the coating film surface, and the position and / or angle of the magnetic material In the direction of the line of magnetic force, and curing the coating until the position and / or angle of the magnetic substance in the applied coating does not change.

[0006]

[Function] The pattern of the uneven shape that appears on the wheel cover is
A large number of fine flake-shaped magnetic substances are mixed in a transparent or translucent coating film and formed by mutual changes in the orientation of the magnetic substances, and the resulting pattern produces a three-dimensional appearance. The surface itself of the cover body is not uneven. In addition, even when injection molding is performed, the reduction in mechanical strength and appearance of the wheel cover is reduced. Furthermore, the magnetic field for forming the pattern at a plurality of locations is arranged so that the interference of the mutual magnetic field is uniform over the entire wheel cover, so that when viewed as a whole of the wheel cover, the pattern is not locally localized. It is not evenly disturbed.

[0007]

FIG. 1 is a view for explaining the principle of a pattern coating film using a magnetic field.

In FIG. 1, reference numeral 11 denotes an article to be coated made of a non-magnetic material such as plastic. For example, a magnet 13 such as a plate-shaped permanent magnet is processed in accordance with a pattern that appears, and the magnet 13 is brought into close contact with the back side of the article 11 to form a predetermined magnetic field. The dotted line shown in the figure indicates the direction of the formed magnetic force lines. The magnet 13 has an N pole on the upper side and an S pole on the lower side on the paper. The north pole and the south pole may be reversed. The lines of magnetic force within the range of the shape of the magnet 13 (region A shown in the figure) are directed substantially perpendicular to the surface of the coating film 15 (hereinafter, referred to as the coating film surface) and slightly away from the end of the magnet 13. In the portion (region B shown in the figure), the direction of the magnetic field lines changes rapidly, becomes parallel to the coating surface (the tangential direction of the magnetic field lines is parallel to the coating surface), and the lines of magnetic force applied to both sides of the parallel portion intersect. The angle will be approximately 90 °. Further, in a portion sufficiently distant from the magnet (region D in the figure), the lines of magnetic force are directed substantially perpendicular to the coating film surface. At the points of magnetic charge m, magnetic permeability μ, and distance r, the magnetic field strength H is represented by H = m / 4πμ · R / r ³ . Where:
Uppercase letters indicate vectors. H decreases in inverse proportion to the square of the distance. Therefore, the strength of the magnetic field in the D region is significantly smaller than the strength of the magnetic field in the A region and the B region.

Where such a magnetic field is formed, the magnetic material 17 made of fine flakes of iron, nickel or the like or an alloy thereof is transformed into a transparent or translucent liquid using a volatile solvent. The mixture is uniformly mixed in the paint, and sprayed in the form of a mist.

The magnetic substance 17 sprayed in this magnetic field is
As shown in FIG. 1, they are arranged at an angle θ (hereinafter referred to as “elevation angle”) with respect to the coating film surface along the lines of magnetic force, and the erect angle θ is maintained by the paint sprayed together with the magnetic material 17. It is fixed as it is. At this time, the density of the blown magnetic body 17 is slightly increased at a place where the magnetic flux density is strong.

As shown in FIG. 1, the arrangement of the magnetic members 17 is larger in the region A than in other regions.
7 is substantially perpendicular to the coating film surface, and in the region B, which is the contour of the pattern, more magnetic bodies 17 are in a parallel state in the center than in the other regions, and on both sides thereof, there are more magnetic members 17 than in the other regions. Many magnetic bodies 17 also become oblique and cross at an angle of about 90 °. The magnetic material 17 is fixed almost obliquely to the coating film surface along the lines of magnetic force although the regularity is smaller in the region C than in the region B, but in the region D, the magnetic material 17 is hardly affected by the magnetic field because the magnetic force is weak. Turns in random directions. That is, in the region B, the magnetic body 17 is oriented substantially parallel to the coating film surface, and in the regions A and C, the magnetic material 17 is oriented substantially in the direction crossing the coating film surface.

FIGS. 2A to 2D are diagrams showing that the intensity and direction of the reflected light differ depending on the vertical position of the magnetic body 17. 2 (A) to 2 (D) show that the spray coating of the magnetic material 17 is passed three times (one reciprocation and a half) to the article 11 to form a coating film 15. A transparent coating film 19 is formed thereon.

In the following description, the surface of the article 11 to be coated is a gray color, and a transparent liquid paint mixed with Ni (nickel) flake-like fine powder (the surface usually has a silver-white color) as a magnetic substance 17 is sprayed. This is the case where a paint film is formed by painting.

FIG. 2A shows a state in which the magnetic body 17 is perpendicular to the coating film. Most of the light applied from the upper surface (when the article to be coated 11 is viewed from the front) is transmitted or absorbed, and the amount of reflected light is small, so it appears blacker than gray and recedes more than other parts. FIG. 2B shows a state in which the magnetic body 17 is parallel to the coating film surface. Since most of the incident light from the upper surface is reflected, the light appears whiter than gray and appears more prominent than other parts. FIG. 2 (C) shows a case where the postures are randomly arranged, and the incident light from the upper surface is scattered to be gray, cannot be seen even if it floats up, cannot be seen when receding, and cannot be seen three-dimensionally. . FIG. 2 (D) shows a case where the magnetic body 17 is arranged obliquely. When viewed from the direction of arrow L, the magnetic material 17 appears whiter than gray, and appears to rise. It looks black and looks more backward than the rest.

In the above description, it is assumed that the appearance of white is due to the fact that the magnetic substance 17 is silver-white and reflects light. If the magnetic material 17 is previously coated with a gold material or the like, the portion looks golden. Note that when the surface of the magnetic body 17 is a dark color such as black, the above description is presumed to be reversed.

FIGS. 3 to 6 show a first embodiment of the present invention.

3 and 4, a vehicle wheel cover main body (hereinafter referred to as a "wheel cover main body") 101 is shown.
Is injection-molded into a substantially disk shape from a plastic material which is a non-magnetic material. FIG. 4 shows a cross section taken along line AA of FIG. On the back surface of the wheel cover body 101, a plurality of mounting portions 103, 103,.
, And a plurality of ventilation holes 105, 105,... In FIG. 4, the wheel cover main body 101 is formed so as to entirely form a part of the outer surface of a sphere having a predetermined radius,
Except for the edge portions of the ventilation holes 105, 105,..., Their outer surfaces are flat surfaces.

Here, "flat" means not only the outer surface of a sphere having an infinite radius but also a curved surface having a radius of about 100 mm or more.

In other words, the radius of the curved surface is largely changed, such as the edge portion of the ventilation holes 105, 105,.

In this embodiment, nut patterns 107, 107,... Having the contours of four hexagonal nuts appear on the surface of the wheel cover main body 101. The outline of the nut pattern 107 is a regular hexagon on the outside and a circle on the inside. The nut pattern appears at a constant radial distance from the wheel cover center P and at regular intervals in the circumferential direction. That is, even if the directions of the magnetic force lines are disturbed due to the mutual magnetic field interference in the process of forming the nut patterns 107, 107,..., That is, even if the contour of the pattern 107 is partially disturbed, the disturbance is observed as the whole wheel cover. Sometimes it appears in a balanced position. The nut pattern 107 will be described with reference to FIGS. 5 (A) and 5 (B) and FIGS. 6 (A), 6 (B) and 6 (C). FIGS. 5A and 5B show a case where a magnetic field is formed on a flat outer surface of the wheel cover main body 101 by a plate-shaped nut-shaped magnet 31 having a regular hexagonal outer peripheral edge and a round hole in the center. Are shown in an enlarged manner.
When a nut-shaped magnet 31 having edges 31a and 31b indicated by dotted lines in FIG. 5B is closely contacted with the back side of the wheel cover main body 101 as shown in FIG. Appears like a dotted line. FIG. 6B illustrates a typical orientation of the magnetic body 17 in each portion. FIG.
In (A), the part that appears gray is the virtual reference line according to the principle described above, the part above the reference line appears white, and the part that appears to rise above the other parts and the part below the reference line appears black. FIG. 11 is a diagram showing the distribution degree of a portion that appears to be receded from other portions, and indicates that a peak portion looks whitest, that is, appears to rise most. As can be seen from FIG. 5 (A) or 5 (B), most of the magnetic material 17 is parallel to the coating surface because of the edges 31a, 31 of the magnet 31.
b, but slightly above, that is, FIG.
The outlines 35a and 35b are shown by solid lines in FIG. In the present embodiment, the plurality of patterns have the shape of four regular hexagonal nuts on one and the same radius, but not limited to one but two or more on each of the same radius and in the circumferential direction. As long as the position of the interval is maintained, the shape and the number (location) are not limited and can be freely selected. The number of patterns is not limited to a plurality of patterns each appearing at an independent position.
A single pattern may have a plurality of identical patterns having a contour of a specific shape at the same radius and at equal intervals in the circumferential direction in one pattern. Examples of the pattern having such a shape include a gear shape, a petal shape, and a star shape.

FIG. 7 is a sectional elevation view of a coating apparatus for manufacturing a wheel cover.

In FIG. 7, a base 111 is provided with a fixing member 121 made of wood, gypsum or the like for fixing the wheel cover main body 101. When the wheel cover main body 101 is injection-molded, a projection 109 is formed at the resin injection port. The protrusion 109 is cut after painting. In this embodiment, the protrusion 109 is provided on the upper end of the holding device 115 which can move up and down.
17 and a guide member 113 provided at the center.
In cooperation with the fixing member 121. A fixing member 12 is provided at a position facing the rear surface of the wheel cover body 101.
A plurality of magnet mounting portions 121a, 121a,... For mounting the magnet 119 on a part of the device 1 are provided. Each of the magnet mounting portions 121a, 121a,... Has four magnets 119, 119,.
The distance from the upper surface to the surface of the wheel cover main body 101 is maintained at the same distance (dimension). In addition,
The magnet mounting portions 121a, 121a,... Are formed in concave shapes for mounting magnets for pattern formation. The nut-shaped magnets 119, 119,...
As shown in FIG. 8, they are arranged symmetrically with respect to the point P so as to satisfy the relationship of equal intervals in the circumferential direction on the same radius with respect to the center of 01.

A method for manufacturing a wheel cover for a vehicle using the above device will be described.

First, the magnet mounting parts 121a, 121a,.
And a plurality of magnets 11 having the same magnetic force for forming a pattern.
Are arranged, and are mounted on the upper portion of the base 111. Next, the vehicle wheel cover main body 101 for forming a pattern is mounted from above the fixing member 121. When mounting the wheel cover body 101, the protrusion 109 is held by a holding device 117, pulled downward by a holding device 115, and an appropriate pressure is applied to the magnet 119 and the back side of the wheel cover 101 to cause each magnetic field to be applied. It occurs uniformly for the pattern portion.
After the wheel cover main body 101 is fixed, a transparent liquid paint in which the fine flake-shaped magnetic substance and the solvent are almost uniformly mixed together is uniformly applied by, for example, a spray gun. Then, a pattern appears on the coating film according to the principle described above. When the solvent volatilizes and the viscosity of the coating film becomes high and the magnetic substance does not move, the vehicle wheel cover is removed from the fixing member 121 and dried by a known method.

In the method of the above-described embodiment, the paint in which the fine flake-like magnetic material is mixed is applied in a state where the magnetic field is formed in advance, but this step may be reversed. That is, after applying the paint, the paint still maintains fluidity, and while the magnetic substance in the paint film can move and change its direction, a magnetic field is formed from above or below the wheel cover main body 101, Patterns can also appear.

FIG. 9 shows another embodiment in which magnets are arranged on the front side of the wheel cover body. 9 is substantially the same as the method and apparatus shown in FIG. 7, except that a magnet 147 is provided on the front side of the wheel cover main body 139, and a means for supplying air or hot air is provided. It differs in that it is provided. That is, in FIG. 9, one end of the double lid 131 is rotatably provided on the base 135 by a hinge 133 or the like, and the other end is provided on the inner cover 1 of the lid 131.
The stopper 136 is provided so that the plurality of magnets 147, 147,... Provided on the surface 37 form a substantially uniform magnetic field on the surface of the wheel cover main body 139 and stop at an appropriate position. The inner cover 137 has a plurality of ventilation holes 141, 141,... Through which the air supplied from the air supply port 151 diffuses and passes, and a plurality of discharge holes 143, 143, for discharging the air. ... are provided. The wheel cover body 13 of the inner cover 137
On the side facing the surface of No. 9, a plurality of magnets 147, 147,... For forming a pattern interfere with each other in their magnetic fields to disturb the direction of the lines of magnetic force. It is located in a balanced position. For example, also in this embodiment, like FIG. 8, they are arranged at the same radius and at equal intervals in the circumferential direction. The outer cover 145 of the lid 131 has an air or hot air supply port 151.

After the wheel cover main body 139 is coated with a paint mixed with a flake-like magnetic material using the above-described apparatus with the lid 131 opened, the lid 131 is moved to the position shown in FIG.
And a magnetic field is formed by the magnet 147 and air, preferably hot air, is supplied by the air supply means to volatilize the solvent in the paint.

In the method of this embodiment, the distance between the surface of the magnet 147 and the coating film is not restricted by the thickness of the wheel cover body 139, so that the distance can be freely set, and as a result, the magnetic force exerted on the coating film Can be adjusted. Further, the present invention can also be applied to a wheel cover main body 139 having a rib or the like on the back surface corresponding to a portion where a pattern is formed on the front surface so that the magnet 147 cannot be arranged on the back surface.

In the present invention, the coating material to be applied is liquefied with a transparent solvent, and a large number of fine flake-shaped magnetic substances, in this embodiment, Ni fine flakes are mixed into the coating material. And a thinner is mixed to lower the viscosity and facilitate spraying.

The coating film may be translucent, or may be a light color such as white or yellow that transmits some light, and these may be “transparent or translucent”. Included in

The materials and shapes of the articles to be coated used in the present invention, that is, the wheel cover bodies 101 and 139 for vehicles are not particularly limited. In particular, it is preferable to use a nonmagnetic material such as plastic or aluminum, but a ferromagnetic material such as iron and an alloy containing iron may be used. Its shape, especially the thickness of the part to be painted, is a certain thickness, that is, the magnet 1
In the case where 19 and 147 are pressed against the back, it is sufficient that the magnetic field is large enough to control the vertical angle of the flake-shaped magnetic body 17 to be painted on the surfaces of the wheel cover main bodies 101 and 139. By combining the viscosity of the paint to be used, the strength of the magnetic force, and the like, the present invention can be applied to those having different thicknesses.

The fine flake-shaped magnetic body 17 used in the present invention is preferably in the form of a thin plate, and its planar shape is not limited. The material is preferably a ferromagnetic material such as iron, nickel, cobalt, or an alloy thereof, and is a material that is strongly magnetized in the direction by an external magnetizing action. However, bismuth, antimony, copper,
A diamagnetic material such as zinc may be used. The magnetic material 17 may be a material obtained by coating the above-described ferromagnetic material or the like with a gold material or an aluminum color material, or may be a material obtained by coloring with a non-magnetic material paint. The size is preferably 1 to 50 μm in the longitudinal direction, and more preferably 20 to 50 μm. The thickness is preferably 5 to 20 μ.

The paint used in the present invention is preferably a resin that dries or reacts and cures at room temperature, but may be a heat-curable type or a UV-curable type. For example, alkyd resin, polyester resin, acrylic resin, urethane resin,
It may be a vinyl resin or the like. As the solvent, an organic solvent or water is used. As the volatile solvent, a solvent having dilutability and volatility, for example, a thinner is preferable. In particular, if the proportion of a solvent having a low boiling point such as methyl ethyl ketone is increased, the quick drying property is improved.

The mixing ratio of the magnetic powder and the vehicle is preferably 10 to 20% by weight per 100% of the vehicle.

The coating machine for spray coating may be one used for ordinary spray coating, and is not particularly limited.

When the coating material is of a thermosetting type, after the magnetic substance in the coating film stops moving, it is heated by hot air or infrared rays.
It is necessary to heat appropriately. When the paint is UV curable,
Similarly, ultraviolet irradiation by a mercury lamp or the like is required.

In any of the above embodiments, it is preferable that a transparent or translucent coating film not containing a magnetic material is further formed on the coating film surface containing a magnetic material.

The application is not limited to spraying, but includes dipping, flow coating and the like.

The observation results of the cross section of the coating film subjected to the magnetic coating under the following conditions and methods will be described below with reference to the photographs and drawings shown in FIGS.

I. Conditions (i) Material to be coated (product to be coated 11) ABS resin flat plate (100 × 150 × 2.0mm) Slightly yellowish ivory color (ii) Adjustment paint (1) For base coat (a) Base material “Soflex 5300N” ”And“ Soflex 5000N ”were used, respectively. … Kansai Paint Co., Ltd., acrylic urethane resin paint hardener “Soflex 5300 hardener” (when using the main agent “Soflex 5000N”, “Soflex 120 hardener”) ・ ・ ・ Kansai Paint Co., Ltd. ), Acrylic urethane-based resin paint Mixing ratio (weight) "SOFLEX 5300N": "SOFLEX 5300 curing agent" = 100: 15 "SOFLEX 5000N": "SOFLEX 120 curing agent" = 100: 10 Solvent "Rethane" PG thinner ": A mixture of a main agent and a curing agent was diluted with a xylene thinner manufactured by Kansai Paint Co., Ltd., and the viscosity was adjusted to 12.0 to 12.5 seconds with a Ford cup # ₄ . (b) Magnetic material "NOVAMET FINE WATER GRADE": A flake-shaped Ni fine powder sold by Inco (Canada) Classified from 94% minus 325 mesh particle size and used with an average particle size of about 20μ. With a metallic luster.

Mixing ratio (weight) Vehicle: magnetic substance = 100: 35 (2) For top coat (a) Main ingredient “SOFLEX 5000 Top Clear” transparent color ・ ・ ・ Acrylic urethane resin paint, manufactured by Kansai Paint Co., Ltd. Curing agent "SOFLEX 120 Curing Agent" ... Acrylic urethane resin paint mixture ratio (weight) manufactured by Kansai Paint Co., Ltd. Main agent: Curing agent = 100: 10 (iii) Magnet "Maglover 14VS" ... Nichirei magnet A sheet-shaped rubber magnet (2.0 mm thick, N pole on one side, S pole on the other side) manufactured by K.K. Residual magnetic flux density 2342 G, maximum energy product 1.39 MGOe

II. Pattern Sample Preparation Method The above sheet-like rubber magnet was punched out into a donut shape having a size as shown in FIG. 10, and attached with an adhesive tape so that its N pole face was directed to the back surface of the material to be coated.

Next, from the surface side of the material to be coated, a paint for the above-mentioned adjusted base coat (the main agent is "SOFLEX 5300N")
Was applied using a spray gun so that the coating pressure after curing was 20 to 30 μm. Then, after leaving naturally for 2 to 3 minutes so that the magnetic substance does not move in the coating film, after leaving it for 30 minutes to allow the solvent to volatilize, the magnet was removed from the material to be coated, The coating film formed was cured by a drying apparatus.

Thereafter, a coating material for a top coat was further applied so as to have a film thickness of about 40 μm after curing, and was cured by a drying device to obtain a sample.

The pattern was formed and visible from the surface of the material to be coated when the base coat paint was applied. Next, when the same coating as above was performed using "SOFLEX 5000N" as the main agent, almost the same results were obtained.

In FIG. 10, a to e of the pattern portions are shown.
The relationship between the perceived unevenness of the part and the perceived color is as follows: (a perceived unevenness) (visual color) a part planar view gray color b part convex view white outer contour c part concave view black d part convex view white inner contour e part concave It is visually black.

III. Method for Preparing Sample for Microscope As a sample for microscope, a sample mainly composed of "SOFLEX 5300N" was used.

As shown in FIG. 11, a rectangular sample S obtained by cutting along the lines C--C and C--C--
After setting on a petri dish with the C section facing upward, C-C
The molten resin was injected into the petri dish until the cross section was filled and solidified. After the sample S was released from the petri dish in a state where the sample S was buried in the solidified resin, the CC cross section was polished with sandpaper for microscopic observation, and a smooth surface was obtained.

IV. Microscopic photographing Microscope Observation and photographing of the BB cross section of the surface of the coated base coat with a camera at a magnification of about 100 times, divided into a, b, c, d, and e portions. Microscope observation results See FIGS. 10 to 22 and 23.

[0050]

As described above, according to the present invention, even if the magnetic fields formed by the magnets affect each other and the magnetic field lines interfere and are disturbed, the arrangement of the magnets is maintained in a specific relationship. Since the arrangement is arranged, the disturbance is balanced when viewed as a whole wheel cover, and there is no locally disturbed portion, so that the pattern formed on the wheel cover main body is uniform as a whole. This has the effect of appearing in the pattern. Further, it is possible to form a pattern coating film with a simple device.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating that a magnetic body takes a different direction depending on a magnetic field.

FIG. 2 is a diagram showing a correlation between a direction of a magnetic body and reflected light.

FIG. 3 is a front view of the wheel cover according to the first embodiment.

FIG. 4 is a sectional view taken along the line AA in FIG. 3;

FIG. 5 is a partially enlarged view of a pattern forming portion.

FIG. 6 is a diagram showing the intensity distribution of the pattern and the directions of the corresponding magnetic lines of force and the magnetic material.

FIG. 7 is a diagram showing a method and an apparatus for implementing the first embodiment.

FIG. 8 is a diagram showing an arrangement of magnets for forming four patterns.

FIG. 9 illustrates a method and apparatus of another embodiment.

10A and 10B show a positional relationship between a pattern and a magnet appearing in a coating film formed by magnetic coating on the surface of an article to be coated, and FIG.
Is a front view, and (b) is a cross-sectional view taken along line BB of (a).

11A and 11B show a sample S for observation with a microscope, FIG. 11A is a perspective view showing a state in which the sample is housed in a petri dish, and FIG. 11B is a perspective view showing a position observed with a microscope. .

FIG. 12 shows flakes in a coating film formed by magnetic coating showing a random angle to the coating film surface, (a) is a micrograph, and (b) is an explanatory diagram reproducing the micrograph.

13 shows flakes in a coating film formed by magnetic coating showing a slightly upwardly rising angle with respect to the coating film surface, FIG. 13 (a) is a micrograph, and FIG. 13 (b) is an explanatory diagram replicating the micrograph.

FIGS. 14A and 14B show a state in which flakes in a coating film formed by magnetic coating have an increased left-upstanding angle with respect to the coating film surface, wherein FIG. 14A is a micrograph, and FIG. It is.

FIG. 15 shows a state in which flakes in a coating film are almost parallel to the coating film surface by magnetic coating, and (a) is a micrograph,
(B) is an explanatory view mimicking a micrograph.

FIG. 16 shows a state in which flakes in a coating film formed by magnetic coating are parallel to the coating film surface, (a) is a micrograph, and (b) is a micrograph.
FIG. 3 is an explanatory view which is a reproduction of a micrograph.

FIG. 17 shows a state in which flakes in a coating film formed by magnetic coating gradually start to rise to the upper right from the right end to the left end with respect to the coating film surface, (a) is a micrograph, and (b) is a microscope. It is explanatory drawing which copied the photograph.

FIG. 18 shows a state in which flakes in a coating film formed by magnetic coating are at a large right angle to the coating film surface and are on the upper right side.
Is a photomicrograph, and (b) is an explanatory diagram that replicates the photomicrograph.

FIGS. 19A and 19B show a state in which flakes in a coating film formed by magnetic coating move from the right end to the left end with respect to the coating film surface and move from right to left to a rising angle from left to right, (a) is a micrograph, and (b) is a micrograph. FIG.

FIG. 20 shows a state in which the flakes in the coating film by magnetic coating gradually decrease in the rising angle from the right end to the left end with respect to the coating film surface, and gradually become parallel to the coating film surface;
(A) is a photomicrograph, and (b) is an explanatory diagram that replicates the photomicrograph.

FIGS. 21A and 21B show a state in which flakes in a coating film formed by magnetic coating are substantially parallel to the coating film surface, wherein FIG. 21A is a micrograph and FIG.

FIG. 22 shows a state in which flakes in a coating film formed by magnetic coating are at an upper right angle to the coating film surface, (a) is a micrograph, and (b) is an explanatory diagram of the micrograph. It is.

FIG. 23 is a table showing the results of microscopic observation for each observation site.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 To-be-painted article 13 Magnet 15 Coating film 17 (flake) -like magnetic body 101 Wheel cover main body 107 Hexagon nut shape pattern 119 Magnet 121 Fixing member

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁶ , DB name) B05D 5/00-5/12 B05D 7/02 B05D 7/24 B60B 7/00-7/04

Claims (4)

(57) [Claims] 1. A flat portion of the surface of a wheel cover main body formed by a transparent or translucent coating film in which a large number of fine flake-like magnetic substances are mixed on the surface of a wheel cover main body formed in a substantially disk shape. A pattern having a contour of a predetermined shape is formed, and the direction of the magnetic substance in the coating is substantially parallel to the surface of the coating at a substantially central portion of the contour, and the surface of the coating at both sides of the contour. A vehicle wheel cover facing in a direction substantially intersecting with the vehicle, wherein the contour of the flat surface is visually recognized as protruding or retreating as compared with other portions. 2. The outline of the pattern is hexagonal,
2. The vehicle wheel cover according to claim 1, wherein a plurality of the hexagonal outline patterns are provided at the same radius from the center of the wheel cover main body and at equal intervals in the circumferential direction. 3. A step of applying a transparent or translucent liquid paint in which a large number of fine flake-like magnetic substances are mixed on a surface of a vehicle wheel cover body formed in a substantially disk shape; Before or after, when the magnetic material in the paint is in a movable state, at a predetermined radius from the center of the wheel cover main body and at equal intervals in the circumferential direction, substantially parallel to the surface of the coating film. A magnetic field that generates a magnetic field line that outlines a predetermined shape on the coating film surface, and moves the position and / or angle of the magnetic body along the direction of the magnetic field line And v. Curing the coating until the position and / or angle of the magnetic substance in the applied coating does not change. 4. The vehicle according to claim 3, wherein a plurality of the magnetic fields are formed independently at the same radius from the center of the wheel cover main body and at equal circumferential intervals. Manufacturing method of wheel cover.