JP7335476B2 - Sheet for headlight cover - Google Patents

Description

The present invention relates to a headlight cover sheet.

For the past 20 years or more, the headlight covers of automobiles around the world have been designed with a hard coat resin applied to a plastic (polycarbonate) material.
However, while this design allows for a variety of designs, it cannot escape daily deterioration over time.

As a result, about 5 years after the car is registered, the surface of the headlight cover of a car becomes cloudy (dull and yellowish) due to the ultraviolet rays contained in the sunlight. There have been many cases of failure.

This lack of light is directly linked to poor visibility at night, and in fact there are vehicles with poor visibility in Japan and around the world.
As a specific expression, it is "due to fogging of the surface of the headlight cover, even if the headlight is turned on, it is too dark to see ahead."

In order to solve the above-described problems, Non-Patent Document 1 describes a headlight cover sheet that has an adhesive layer and is cut according to the surface shape of the headlight cover. .

In addition, Patent Document 1 discloses that the transparency of the headlight cover can be recovered by removing the yellowing and cloudiness of the headlight cover, and the transparency of the recovered headlight cover can be maintained for a long period of time. A headlight cover sheet is described.

https://www.automesseweb.jp/2018/04/26/53386

Japanese Patent No. 5961725

However, although the headlight cover sheet described in Non-Patent Document 1 is cut according to the surface shape of the headlight cover, it is cut to the three-dimensional curved surface shape of the headlight cover so as to smooth out the wrinkles. Construction is performed by pulling the article itself.

In this way, it is difficult to adhere the sheet neatly without creating wrinkles in the construction method in which the flat film is adhered so as to follow the complicated three-dimensional curved surface shape of the headlight cover.
This situation is considered to be very similar to the situation in which saran wrap (registered trademark) is attached to an egg without wrinkles.

In addition, since the headlight cover sheet described in Patent Document 1 has a substantially rectangular shape, it is difficult to neatly attach the sheet to the headlight cover, which has a three-dimensionally complicated shape, without creating wrinkles. is.

Furthermore, it is stated that the headlight cover sheet described in Patent Document 1 may employ a polyurethane material that easily follows a three-dimensional curved surface, but the polyurethane material deteriorates rapidly due to its material characteristics. Therefore, even if the surface is clean immediately after construction, stains and yellowing will occur at an early stage.

Based on the actual situation as described above, the inventor of the present invention started development on the premise that polyurethane materials, which pose many problems, should not be used for parts such as headlight covers, where visible light transmittance is important. It led to creation of the present invention.

That is, the present invention has been made in view of the actual situation as described above, and provides a headlight cover that can be neatly attached to a three-dimensional headlight cover without causing wrinkles. An object of the present invention is to provide a sheet for

In order to solve the above-mentioned problems, the present invention provides a headlight cover sheet in which a three-dimensional shape of a headlight cover is developed on a two-dimensional plane, comprising a sheet body, the sheet body being connected to the periphery thereof. It is characterized by having a notch.

According to the present invention, it is possible to prevent the occurrence of wrinkles on the curved surface of the headlight cover and to attach the sheet body neatly by having the notch formed continuously on the peripheral edge.

A preferred embodiment of the present invention is characterized in that the cut portion is formed with a pair of abutment sides that are gradually separated from each other toward the periphery of the sheet body.

With such a configuration, the sheet body can be stuck on the headlight cover with a uniform thickness without creating a gap.

A preferred embodiment of the present invention is characterized in that the contact side is curved.

By adopting such a configuration, it is possible to prevent wrinkles from occurring on the complicated curved surface of the headlight cover, and to adhere the sheet body neatly.

A preferred embodiment of the present invention is characterized by having a plurality of cut portions.

With such a configuration, it is possible to neatly attach the sheet body even to a headlight cover having a plurality of three-dimensional shapes.

In a preferred embodiment of the present invention, an auxiliary sheet is provided separately from the seat body, and the auxiliary sheet is configured so that a peripheral edge of the auxiliary sheet can come into contact with the peripheral edge of the seat body. .

With such a configuration, it is possible to neatly attach the sheet main body and the auxiliary sheet to the headlight cover so as to reliably cover the entire surface of the headlight cover.

A preferred form of the present invention is characterized in that a plurality of the auxiliary sheets are provided.

With such a configuration, it is possible to neatly attach the sheet main body and the auxiliary sheet to various three-dimensional headlight covers so as to reliably cover the entire surface.

A preferred embodiment of the present invention is characterized in that a base sheet is provided, and the sheet body is detachably laminated on the base sheet.

With such a configuration, the sheet body can be attached to the headlight cover while being peeled off from the base sheet, making it possible to prevent fingerprints and dust from adhering to the back surface of the sheet body. .

A preferred embodiment of the present invention is characterized in that the auxiliary sheet is detachably laminated on the base sheet.

With such a configuration, the sheet body and the auxiliary sheet can be attached to the headlight cover while being peeled off from the base sheet, thereby preventing fingerprints and dust from adhering to the back surfaces of the sheet body and the auxiliary sheet. It becomes possible to

A preferred embodiment of the present invention is characterized in that the surface area of the seat body and the surface area of the headlight cover are substantially the same.

With such a configuration, the seat body can be attached to the headlight cover without any pulling, so the workability of the material of the seat body is not affected. This makes it possible to use various materials for the seat body. For example, it is possible to adopt a material such as an acrylic material which is poor in expansion and contraction but can exhibit high weather resistance.

ADVANTAGE OF THE INVENTION According to this invention, the sheet|seat for headlight covers which can be neatly adhered to a three-dimensional headlight cover without wrinkles can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the headlight cover sheet|seat which concerns on Embodiment 1 of this invention, Comprising: (a) Surface view, (b) XX' line partial enlarged sectional view. It is a figure which shows the usage example of the sheet|seat for headlight covers which concerns on Embodiment 1 of this invention. FIG. 4 is a view showing a headlight cover sheet according to Embodiment 2 of the present invention, (a) a front view and (b) a partial enlarged cross-sectional view taken along line YY'. FIG. 10 is a diagram showing a usage example of the headlight cover sheet according to Embodiment 2 of the present invention.

A headlight cover sheet according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 4. FIG.
In addition, the embodiment shown below is an example of the present invention, and the present invention is not limited to the following embodiments. In these figures, reference numerals 1 and 2 denote headlight cover sheets according to the present embodiment.

<Embodiment 1>
As shown in FIG. 1, the headlight cover sheet 1 is a sheet in which the three-dimensional shape of the headlight cover H (see FIG. 2) is developed on a two-dimensional plane, and includes a sheet body 11 having transparency. The main body 11 has a notch N that is continuous with its periphery.
The cut portion N is composed of a first cut portion N1 on the left side in FIG. 1 and a second cut portion N2 near the center.

As described above, the seat body 11 is a seat obtained by developing the three-dimensional shape of the headlight cover H on a two-dimensional plane, so that the surface area of the seat body 11 and the surface area of the headlight cover H are substantially the same. there is

More specifically, the sheet body 11 is composed of a surface layer 11a that is exposed on the surface when attached to the headlight cover H, and an adhesive layer 11b that abuts and adheres to the headlight cover H. As shown in FIG.

The surface layer 11a is preferably a resin film, and the material is not particularly limited as long as it has transparency.
Examples of materials for the surface layer 11a include vinyl chloride resin compositions, polyester resin compositions containing PET and the like, acrylic resin compositions, and urethane resin compositions.

The adhesive layer 11b is not particularly limited as long as it has transparency and can be attached to the headlight cover H, and a known adhesive can be used.
Examples of the adhesive used for the adhesive layer 11b include rubber-based adhesives and acrylic-based adhesives.

A pair of contact sides n1 and n2 that are gradually separated from each other toward the periphery of the seat body 11 are formed in the first cut portion N1 and the second cut portion N2. Also, the pair of contact sides n1 of the first notch N1 are formed so as to curve toward the cutting edge.

The peripheral edge of the seat body 11 is provided with a curved portion C that is recessed like a mountain.

FIG. 2 is a schematic perspective view when the headlight cover sheet 1 is attached along the three-dimensional shape of the headlight cover H. As shown in FIG.
In FIG. 2, the headlight cover H and the vehicle body W including the headlight cover H are indicated by wavy lines.

As shown in FIG. 2, the adhesive layer 11b abuts along the three-dimensional shape of the headlight cover H, so that the pair of abutting sides n1 and n2 abut. As a result, the sheet body 11 can be neatly attached to the headlight cover H without forming a gap.

According to the present embodiment, by having the notch N continuous with the peripheral edge of the seat body 11, the occurrence of wrinkles on the curved surface of the headlight cover H is prevented, and the seat body 11 is attached to the headlights. It becomes possible to adhere the cover H neatly.

In addition, a pair of contact sides n1 and n2 that are gradually separated from each other toward the periphery of the seat body 11 are formed in the first cut portion N1 and the second cut portion N2, so that the seat body 11 can be It becomes possible to stick it on the cover H with a uniform thickness without forming a gap.

In addition, since the pair of contact sides n1 and n2 are curved, it is possible to prevent wrinkles from occurring on the complicated curved surface of the headlight cover H and to adhere the sheet body 11 neatly. .

In addition, since the seat body 11 has a plurality of notches N, the seat body 11 can be neatly attached even to the headlight cover H having a complicated three-dimensional shape.

Further, since the surface area of the seat body 11 and the surface area of the headlight cover H are substantially the same, various materials can be used for the seat body 11 . For example, it is possible to adopt a material such as an acrylic material which is poor in expansion and contraction but can exhibit high weather resistance.

<Embodiment 2>
As shown in FIG. 3, the headlight cover sheet 2 is a sheet in which the three-dimensional shape of the headlight cover H' (see FIG. 4) is developed on a two-dimensional plane, and can be attached to and detached from the base sheet B and the base sheet B. One sheet main body 21 laminated on the base sheet B and two auxiliary sheets 22 laminated on the base sheet B in a detachable manner.
Both the sheet main body 21 and the auxiliary sheet 22 are transparent, and the sheet main body 21 has a notch portion N' which is continuous with its peripheral edge.

More specifically, the sheet body 21 is composed of a surface layer 21a that is exposed on the surface when attached to the headlight cover H, and an adhesive layer 21b that abuts and adheres to the headlight cover H. As shown in FIG.
The auxiliary sheet 22 is composed of a surface layer 22a that is exposed on the surface when attached to the headlight cover H', and an adhesive layer 22b that abuts and adheres to the headlight cover H'.

Note that the materials of the surface layers 21a and 22a and the adhesive layers 21b and 22b are the same as in the previous embodiment, so description thereof will be omitted.

A pair of abutment sides n' are formed in the cut portion N' so as to gradually separate from each other toward the periphery of the sheet body 11. As shown in FIG.

The peripheral edge of one auxiliary sheet 22 is provided with a curved portion C that is recessed like a mountain.

FIG. 4 is a schematic perspective view when the headlight cover sheet 2 is attached along the three-dimensional shape of the headlight cover H'.
In FIG. 4, the headlight cover H' and the vehicle body W' including the headlight cover H' are indicated by wavy lines.

As shown in FIG. 4, the adhesive layers 21b and 22b are brought into contact along the three-dimensional shape of the headlight cover H', so that the pair of contact sides n' of each cut portion N' are brought into contact. Further, the peripheral edge of the auxiliary sheet 22 is brought into contact with the peripheral edge of the sheet body 21, so that the headlight cover sheet 2 can be adhered neatly to the headlight cover H' without forming a gap.

According to this embodiment, two auxiliary sheets 22 are provided separately from the sheet body 21, and the periphery of each auxiliary sheet 22 is configured to be able to contact the periphery of the sheet body 21. The sheet main body 21 and the auxiliary sheet 22 can be neatly attached to the three-dimensional headlight cover H' so as to surely cover the entire surface.

Further, since the base sheet B is provided, and the sheet body 21 and the auxiliary sheet 22 are detachably laminated on the base sheet B, the sheet body 21 and the auxiliary sheet 22 are peeled off from the base sheet B while the headlight is mounted. Since it can be attached to the cover H', it is possible to prevent fingerprints and dust from adhering to the back surfaces of the sheet main body 21 and the auxiliary sheet 22. FIG.

It should be noted that the shapes, dimensions, etc., of the constituent members shown in the above-described embodiment are examples, and can be changed in various ways based on design requirements and the like.

For example, the outer shapes of the seat bodies 11 and 21 and the auxiliary seat 22 can naturally be changed according to the shape of the target headlight cover.
Moreover, the number of cuts N may be any number, and the cuts N may be provided in the auxiliary sheet 22 .
Moreover, the number of curved portions C may be any number, and the curved portions C may be provided in the seat bodies 11 and 21 . Also, the number of auxiliary sheets 22 is not limited to two, and may be any number.
Further, the sheet main bodies 11 and 21 and the auxiliary sheet 22 do not necessarily have a two-layer structure, and may have a multi-layer structure of three or more layers depending on usage conditions.

1, 2 Headlight cover sheets 11, 21 Sheet bodies 11a, 21a Surface layers 11b, 21b Adhesive layer N Cut portion n Contact side C Curved portion 22 Auxiliary sheet 22a Surface layer 22b Adhesive layer B Base sheets H, H' Headlight cover

Claims (6)

A headlight cover sheet provided to cover the entire surface of the headlight cover by developing the three-dimensional shape of the entire surface of the headlight cover having a depth and a curved surface into a two-dimensional plane,
comprising a seat body and an auxiliary seat configured separately from the seat body,
The sheet body has a notch extending along its periphery,
The peripheral edge of the auxiliary sheet is configured to be able to contact the peripheral edge of the sheet body,
the outer shape of the seat main body and the outer shape of the auxiliary seat are different from each other,
A peripheral edge where the seat body and the auxiliary sheet abut is configured to extend in the depth direction of the headlight cover in a state where the seat body and the auxiliary sheet cover the headlight cover,
The headlight, wherein the sum of the surface area of the seat body and the surface area of the auxiliary seat is the same as the surface area of the headlight cover when tension is not applied to the seat body. sheet for cover. 2. The headlight cover sheet according to claim 1, wherein a pair of abutting sides are formed in said notch portion so as to gradually separate from each other toward the periphery of said sheet body. 3. The headlight cover sheet according to claim 2, wherein at least one of the pair of contact sides is curved. The headlight cover sheet according to any one of claims 1 to 3, characterized in that it has a plurality of cut portions. 2. The headlight cover sheet according to claim 1, comprising a plurality of said auxiliary sheets. Equipped with a base sheet,
6. The headlight cover sheet according to claim 5, wherein at least one of the main sheet and the auxiliary sheet is detachably laminated on the base sheet.