JP2005153216A - Light pervious display body and its manufacturing method - Google Patents

Light pervious display body and its manufacturing method Download PDF

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JP2005153216A
JP2005153216A JP2003392351A JP2003392351A JP2005153216A JP 2005153216 A JP2005153216 A JP 2005153216A JP 2003392351 A JP2003392351 A JP 2003392351A JP 2003392351 A JP2003392351 A JP 2003392351A JP 2005153216 A JP2005153216 A JP 2005153216A
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light
base material
cavity
mold
display body
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JP4109613B2 (en
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Hideyuki Osanawa
秀之 長縄
Nobuo Watanabe
信夫 渡辺
Akiyoshi Nagano
昭義 永野
Haruo Okada
晴雄 岡田
Akihiro Kitamura
明弘 北村
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Nippon Bee Chemical Co Ltd
Nissei Plastic Industrial Co Ltd
Toyoda Gosei Co Ltd
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Nippon Bee Chemical Co Ltd
Nissei Plastic Industrial Co Ltd
Toyoda Gosei Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a light pervious display body easily reducible in the wall thickness of a surface material constituting a design surface, and its manufacturing method. <P>SOLUTION: The first cavity formed by a fixed mold 22 and a first movable mold is filled with a resin having light perviousness to mold a base material 12 having a protruded part 12a on its surface. After the first movable mold is replaced with a second movable mold 25, the leading end surface 12b of the protruded part 12a is closely brought into contact with the second movable mold 25 to form a second cavity 26 with a thickness of 20-300 μm between the surface of the base material 12 and the second movable mold 25 and liquid thermosetting coating having shading properties is charged in the second cavity 26 to form the surface material 13 on the surface of the base material 12. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

この発明は、背後から光を照射することにより文字、記号、絵柄などが光って浮き出すように表示が行われる車両内装用スイッチやオーディオカバー、あるいは車両外装用バックパネル等の透光表示体及びその製造方法に関するものである。   The present invention provides a vehicle interior switch, an audio cover, or a translucent display body such as a vehicle exterior back panel in which characters, symbols, patterns, and the like are displayed by illuminating light from behind. It relates to the manufacturing method.

一般に、車両内装用スイッチやオーディオカバー、あるいは車両外装用バックパネル等の透光表示体は、二色または二種類の樹脂を一体に成形する、いわゆる二色成形法を用いて製造されている。このような二色成形法においては、通常、二色または二種類の樹脂は共に熱可塑性樹脂が用いられている。そして、従来、透光性の基材の意匠面に文字あるいは記号等を突出形成した表示部を有する一次樹脂層を成形し、その後、前記表示部の先端面のみを残すようにして遮光性の二次樹脂層を一次樹脂層の意匠面に積層して一体とする透光表示体の製造方法が知られている（例えば、特許文献１参照。）。
特開平９−５２２５４号公報 Generally, a translucent display body such as a vehicle interior switch, an audio cover, or a vehicle exterior back panel is manufactured by using a so-called two-color molding method in which two colors or two kinds of resins are integrally molded. In such a two-color molding method, a thermoplastic resin is usually used for both two-color or two-type resins. Then, conventionally, a primary resin layer having a display portion with characters or symbols protruding from the design surface of the translucent base material is molded, and thereafter, only the front end surface of the display portion is left so as to be light-shielding. A method for manufacturing a translucent display body in which a secondary resin layer is laminated on a design surface of a primary resin layer and integrated is known (see, for example, Patent Document 1).
JP-A-9-52254

しかしながら、前述のような二色成形法による透光表示体の製造方法においては、一次樹脂層及び二次樹脂層が共に熱可塑性樹脂材料より構成されていた。熱可塑性樹脂材料は溶融状態であっても比較的粘度が高いことから、狭いキャビティ内の隅々まで入り込み難い。このため、前記二次樹脂層を薄く形成させることが技術的に困難であった。   However, in the method for producing a translucent display by the two-color molding method as described above, both the primary resin layer and the secondary resin layer are made of a thermoplastic resin material. Since the thermoplastic resin material has a relatively high viscosity even in a molten state, it is difficult to enter every corner of the narrow cavity. For this reason, it was technically difficult to form the secondary resin layer thin.

本発明は、このような従来技術に存在する問題点に着目してなされたものである。その目的とするところは、意匠面を構成する表面材の肉厚を薄くすることが容易な透光表示体及びその製造方法を提供することにある。   The present invention has been made paying attention to such problems existing in the prior art. An object of the present invention is to provide a translucent display body and a method for manufacturing the same, in which it is easy to reduce the thickness of the surface material constituting the design surface.

上記の目的を達成するために、請求項１に記載の発明は、意匠面に光透過部と遮光部とを備えた透光表示体の製造方法であって、基材を成形する第１工程と、前記基材の表面に表面材を層状に成形する第２工程とを備え、前記第１工程は、固定金型と第１移動金型とで形成される第１キャビティに光透過性を有する樹脂を充填して表面に凸部を有する基材を成形する工程であり、前記第２工程は、前記固定金型と第２移動金型とを型締めすることにより、前記凸部の先端面と第２移動金型とを密着させるとともに、前記基材の表面と前記第２移動金型との間に第２キャビティを形成し、該第２キャビティに遮光性を有する塗料を充填して表面材を成形する工程であり、前記第２キャビティを、２０μｍ以上３００μｍ以下の厚みにしたことを要旨とする。   In order to achieve the above object, the invention according to claim 1 is a method for manufacturing a light-transmitting display body having a light-transmitting portion and a light-blocking portion on a design surface, and a first step of forming a base material And a second step of forming a surface material on the surface of the base material in a layered manner, wherein the first step provides light transmission to the first cavity formed by the fixed mold and the first moving mold. A step of forming a base material having a convex portion on the surface by filling the resin having the resin, and the second step includes clamping the fixed mold and the second moving mold to form a tip of the convex portion. A second cavity is formed between the surface of the base material and the second moving mold, and the second cavity is filled with a light-shielding paint. It is a step of molding a surface material, and it is necessary that the second cavity has a thickness of 20 μm or more and 300 μm or less. Let ’s do it.

従って、前記第２キャビティが２０μｍ以上３００μｍ以下の厚みであるため、前記意匠面を構成する表面材の肉厚を薄くすることが容易となる。
請求項２に記載の発明は、請求項１に記載の発明において、前記光透過部と前記遮光部とは、面一とすることを要旨とする。 Therefore, since the second cavity has a thickness of 20 μm or more and 300 μm or less, it is easy to reduce the thickness of the surface material constituting the design surface.
The gist of the invention of claim 2 is that, in the invention of claim 1, the light transmission part and the light shielding part are flush with each other.

従って、前記意匠面に凹凸が生じないので、該意匠面の意匠性を向上させることができる。
請求項３に記載の発明は、請求項１または請求項２に記載の発明において、前記基材は、前記第１及び第２移動金型が型開きする方向と平行に延びる面を備えていることを要旨とする。 Therefore, since unevenness does not occur on the design surface, the design properties of the design surface can be improved.
According to a third aspect of the present invention, in the first or second aspect of the present invention, the substrate includes a surface extending in parallel with a direction in which the first and second movable molds open. This is the gist.

従って、前記意匠面の断面がコの字状、すなわち、前記意匠面が直角に曲折していても容易に意匠面に遮光部を形成することができる。よって、車両内装用スイッチやオーディオカバー等を成形するのに都合がよい。   Accordingly, even if the cross section of the design surface is U-shaped, that is, the light shielding portion can be easily formed on the design surface even if the design surface is bent at a right angle. Therefore, it is convenient for molding a vehicle interior switch, an audio cover, and the like.

請求項４に記載の発明は、請求項１から請求項３のいずれか一項に記載の発明において、前記塗料は、液状熱硬化型塗料であることを要旨とする。
従って、液状熱硬化型塗料は接着性を有するため、前記基材に対する前記表面材の耐剥離性を向上させることができる。また、液状熱硬化型塗料は粘度が低いため、前記第２キャビティが狭くても、該第２キャビティ内の隅々まで液状熱硬化型塗料を容易に入り込ませることができる。 The invention according to claim 4 is the gist of the invention according to any one of claims 1 to 3, wherein the paint is a liquid thermosetting paint.
Therefore, since the liquid thermosetting paint has adhesiveness, it is possible to improve the peel resistance of the surface material with respect to the base material. In addition, since the liquid thermosetting paint has a low viscosity, even if the second cavity is narrow, the liquid thermosetting paint can easily enter every corner of the second cavity.

請求項５に記載の発明は、請求項１から請求項４のいずれか一項に記載の発明において、前記塗料の粘度は、摂氏２５度において３Ｐａ・ｓ以上１００Ｐａ・ｓ以下であることを要旨とする。   The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the viscosity of the paint is 3 Pa · s or more and 100 Pa · s or less at 25 degrees Celsius. And

従って、前記第２キャビティの厚さが２０μｍ以上３００μｍ以下と狭くても、該第２キャビティ内の隅々まで塗料を入り込ませることができるので、前記表面材の肉厚を薄くすることが容易となる。   Therefore, even if the thickness of the second cavity is as narrow as 20 μm or more and 300 μm or less, it is possible to make the paint penetrate into every corner of the second cavity, so that it is easy to reduce the thickness of the surface material. Become.

請求項６に記載の発明は、意匠面に光透過部と遮光部とを備えた透光表示体であって、光透過性を有する樹脂よりなる基材と、該基材の表面に形成された遮光性を有する塗料よりなる表面材とを備え、前記光透過部は前記基材の表面に形成された凸部よりなり、前記遮光部は前記基材の表面を層状に覆う表面材よりなり、前記光透過部と前記遮光部とは面一であるとともに、前記表面材の厚みが２０μｍ以上３００μｍ以下であることを要旨とする。   The invention according to claim 6 is a translucent display body having a light transmission part and a light-shielding part on a design surface, and is formed on a surface of the base material made of a resin having light permeability. A surface material made of a paint having a light shielding property, the light transmitting portion is made of a convex portion formed on the surface of the base material, and the light shielding portion is made of a surface material that covers the surface of the base material in layers. The light transmission part and the light shielding part are flush with each other, and the thickness of the surface material is 20 μm or more and 300 μm or less.

従って、前記表面材の厚みが２０μｍ以上３００μｍ以下であるため、前記意匠面を構成する表面材の肉厚を薄くすることが容易となり、透光表示体をコンパクトにすることができる。   Therefore, since the thickness of the surface material is not less than 20 μm and not more than 300 μm, it is easy to reduce the thickness of the surface material constituting the design surface, and the translucent display can be made compact.

本発明によれば、意匠面を構成する表面材の肉厚を薄くすることが容易な透光表示体及びその製造方法を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, the translucent display body and its manufacturing method with which it is easy to make thin the thickness of the surface material which comprises a design surface can be provided.

以下、本発明を車両内装用のスイッチに具体化した実施形態を図１〜図５に基づいて説明する。
図１及び図２に示すように、この実施形態の透光表示体としてのスイッチ１１は、基材１２と、該基材１２の表面に、該表面を層状に覆うように形成された表面材１３とを備えており、上壁１４と周壁１５とを有する有蓋円筒形状をなしている。基材１２は、光透過性を有する樹脂より有蓋円筒形状に形成されている。基材１２の上面には凸部１２ａが、所定の絵柄等を表すように形成されている。ここで、「光透過性を有する樹脂」は、有色あるいは無色、または、透明あるいは半透明にかかわらず光が透過することができる樹脂を全て含むものとし、好ましくは白色系の樹脂よりなる。この樹脂には、例えば、アクリル樹脂、ポリカーボネート樹脂、ウレタン樹脂等が挙げられる。 Hereinafter, an embodiment in which the present invention is embodied in a vehicle interior switch will be described with reference to FIGS.
As shown in FIGS. 1 and 2, the switch 11 as a light-transmitting display body of this embodiment includes a base material 12 and a surface material formed on the surface of the base material 12 so as to cover the surface in a layered manner. 13 and has a covered cylindrical shape having an upper wall 14 and a peripheral wall 15. The base material 12 is formed in a covered cylindrical shape from a resin having optical transparency. Protrusions 12a are formed on the upper surface of the base 12 so as to represent a predetermined pattern or the like. Here, the “light-transmitting resin” includes all resins that can transmit light regardless of being colored or colorless, or transparent or translucent, and is preferably made of a white resin. Examples of this resin include acrylic resin, polycarbonate resin, and urethane resin.

表面材１３は、遮光性を有する液状熱硬化型塗料よりなり、前記基材１２の凸部１２ａ以外の表面を覆うように形成されている。ここで、「遮光性を有する」とは、光が透過できない程度に着色されている状態を意味するものとする。表面材１３の厚みは、前記基材１２よりも薄く形成されている。表面材１３の厚みは、２０μｍ以上３００μｍ以下であることが好ましく、５０μｍ以上２００μｍ以下であることがより好ましい。表面材１３の厚みが２０μｍ未満である場合には、光を遮断することが困難であり、３００μｍよりも大きい場合には、スイッチ１１の小型化に適さない。   The surface material 13 is made of a liquid thermosetting paint having a light shielding property, and is formed so as to cover the surface of the base material 12 other than the convex portions 12a. Here, “having light shielding properties” means a state of being colored to the extent that light cannot be transmitted. The surface material 13 is formed thinner than the base material 12. The thickness of the surface material 13 is preferably 20 μm or more and 300 μm or less, and more preferably 50 μm or more and 200 μm or less. When the thickness of the surface material 13 is less than 20 μm, it is difficult to block light, and when it is larger than 300 μm, it is not suitable for downsizing of the switch 11.

そして、表面材１３の厚みと前記基材１２の凸部１２ａの高さとは、同じになっている。すなわち、前記凸部１２ａの先端面１２ｂと前記表面材１３の表面１３ａとは面一となっている。表面材１３の表面１３ａは、前記スイッチ１１の意匠面１１ａを構成するとともに、遮光部を構成しており、前記凸部１２ａの先端面１２ｂは、前記スイッチ１１の意匠面１１ａを構成するとともに、光透過部を構成している。   And the thickness of the surface material 13 and the height of the convex part 12a of the said base material 12 are the same. That is, the front end surface 12b of the convex portion 12a and the surface 13a of the surface material 13 are flush with each other. The surface 13a of the surface material 13 constitutes the design surface 11a of the switch 11 and constitutes a light shielding portion, and the tip surface 12b of the convex portion 12a constitutes the design surface 11a of the switch 11, The light transmission part is comprised.

したがって、前記スイッチ１１は、背後（下方）から光を照射することにより、前記遮光部が光を遮り、前記光透過部のみが光を透過するため、所定の絵柄等が該意匠面１１ａに光って表示されるようになっている。   Accordingly, the switch 11 irradiates light from behind (below), so that the light shielding portion blocks light and only the light transmitting portion transmits light. Therefore, a predetermined pattern or the like shines on the design surface 11a. Is displayed.

次に、前記スイッチ１１の製造方法を図３〜図５に基づいて説明する。
前記スイッチ１１を製造するための第１金型２０及び第２金型２１について説明する。
基材１２を成形するための第１金型２０は、固定金型２２と第１移動金型２３とから構成されており、上下方向に型締めを行うことにより第１キャビティ２４が形成されるようになっている。また、前記基材１２の表面に表面材１３を成形するための第２金型２１は、前記第１移動金型２３を第２移動金型２５に交換したもの、すなわち前記固定金型２２と第２移動金型２５とから構成されている。第２金型２１は、上下方向に型締めを行うことにより前記基材１２の表面と第２移動金型２５との間に第２キャビティ２６が形成されるようになっている。 Next, a manufacturing method of the switch 11 will be described with reference to FIGS.
A first mold 20 and a second mold 21 for manufacturing the switch 11 will be described.
The first mold 20 for molding the base material 12 includes a fixed mold 22 and a first moving mold 23, and the first cavity 24 is formed by clamping the mold in the vertical direction. It is like that. The second mold 21 for molding the surface material 13 on the surface of the substrate 12 is obtained by replacing the first moving mold 23 with a second moving mold 25, that is, the fixed mold 22 and The second moving mold 25 is configured. The second mold 21 is configured so that a second cavity 26 is formed between the surface of the substrate 12 and the second movable mold 25 by clamping the mold in the vertical direction.

前記スイッチ１１を製造する工程は、基材１２を成形する第１工程と基材１２の表面に表面材１３を層状に成形する第２工程とを備えている。
図３に示すように、前記第１工程は、固定金型２２と第１移動金型２３とで形成される第１キャビティ２４に、図示しないゲートから前記光透過性を有する樹脂を充填して固化させることにより、表面に凸部１２ａを有する基材１２を成形する工程である。この第１工程により、基材１２を成形した後、第１移動金型２３を上方向に移動させて第１金型２０を開き、第１移動金型２３を第２移動金型２５に交換する。このとき、基材１２の側面１２ｃは、第１移動金型２３が型開きする方向と平行に延びるようになっている。 The step of manufacturing the switch 11 includes a first step of forming the base material 12 and a second step of forming the surface material 13 on the surface of the base material 12 in layers.
As shown in FIG. 3, the first step is to fill the first cavity 24 formed by the fixed mold 22 and the first moving mold 23 with the resin having light transmittance from a gate (not shown). This is a step of forming the base material 12 having the convex portions 12a on the surface by solidifying. In this first step, after forming the base material 12, the first moving mold 23 is moved upward to open the first mold 20, and the first moving mold 23 is replaced with the second moving mold 25. To do. At this time, the side surface 12c of the base material 12 extends in parallel with the direction in which the first moving mold 23 opens.

図４及び図５に示すように、前記第２工程は、固定金型２２上に前記第１工程で成形された基材１２を載置した状態で固定金型２２と第２移動金型２５とを型締めし、前記基材１２の凸部１２ａの先端面１２ｂと第２移動金型２５の成形面２５ａとを密着させる工程を備えている。引き続き第２工程は、基材１２の表面と第２移動金型２５の成形面２５ａとの間に第２キャビティ２６を形成した後、該第２キャビティ２６に図示しないゲートから前記遮光性を有する液状熱硬化型塗料を充填し硬化させて基材１２の表面に表面材１３を成形する工程を備えている。したがって、前記スイッチ１１は、前記第１工程を実施した後、前記第２工程を実施することにより形成される。   As shown in FIGS. 4 and 5, in the second process, the fixed mold 22 and the second moving mold 25 are placed in a state where the base material 12 molded in the first process is placed on the fixed mold 22. Are clamped so that the tip surface 12b of the convex portion 12a of the base 12 and the molding surface 25a of the second moving mold 25 are brought into close contact with each other. Subsequently, in the second step, after the second cavity 26 is formed between the surface of the substrate 12 and the molding surface 25a of the second moving mold 25, the second cavity 26 has the light shielding property from a gate (not shown). The liquid thermosetting coating material is filled and cured to form a surface material 13 on the surface of the substrate 12. Accordingly, the switch 11 is formed by performing the second step after performing the first step.

前記第２工程において、第２キャビティ２６の厚みは、２０μｍ以上３００μｍ以下であることが好ましく、５０μｍ以上２００μｍ以下であることがより好ましい。さらに、第２工程において、前記液状熱硬化型塗料は、摂氏２５度において粘度が３Ｐａ・ｓ以上１００Ｐａ・ｓ以下であるものを用いることが好ましく、３０Ｐａ・ｓ以上５０Ｐａ・ｓ以下であるものを用いることがより好ましい。前記液状熱硬化型塗料の摂氏２５度における粘度が３Ｐａ・ｓ未満である場合には、液状熱硬化型塗料が固定金型２２と第２移動金型２５との継ぎ目に入り込んでバリが発生してしまうおそれがある。また、前記液状熱硬化型塗料の摂氏２５度における粘度が１００Ｐａ・ｓよりも大きい場合には、第２キャビティ２６の隅々まで液状熱硬化型塗料が充分に流れ込まないおそれがある。   In the second step, the thickness of the second cavity 26 is preferably 20 μm or more and 300 μm or less, and more preferably 50 μm or more and 200 μm or less. Further, in the second step, the liquid thermosetting paint preferably has a viscosity of 3 Pa · s or more and 100 Pa · s or less at 25 degrees Celsius, preferably 30 Pa · s or more and 50 Pa · s or less. More preferably, it is used. When the viscosity of the liquid thermosetting paint at 25 degrees Celsius is less than 3 Pa · s, the liquid thermosetting paint enters the joint between the fixed mold 22 and the second moving mold 25, and burrs are generated. There is a risk that. Further, when the viscosity of the liquid thermosetting paint at 25 degrees Celsius is greater than 100 Pa · s, the liquid thermosetting paint may not sufficiently flow into every corner of the second cavity 26.

したがって、前記第２工程において、液状熱硬化型塗料は、前記のような極めて厚みの薄い第２キャビティ２６であっても、充分に隅々まで流れ込ませることができる。このとき、基材１２の凸部１２ａの先端面１２ｂと第２移動金型２５の成形面２５ａとは密着されているため、前記先端面１２ｂ上には表面材１３が形成されることはない。   Therefore, in the second step, the liquid thermosetting paint can be sufficiently poured into every corner even in the second cavity 26 having a very thin thickness as described above. At this time, since the front end surface 12b of the convex portion 12a of the substrate 12 and the molding surface 25a of the second moving mold 25 are in close contact, the surface material 13 is not formed on the front end surface 12b. .

前記スイッチ１１の形成後、第２移動金型２５を上方へ型開きした後、前記スイッチ１１を第２金型２１から取り出す。
以上詳述した実施形態によれば次のような効果が発揮される。 After the switch 11 is formed, the second moving mold 25 is opened upward, and then the switch 11 is removed from the second mold 21.
According to the embodiment detailed above, the following effects are exhibited.

・ 前記第２キャビティ２６が２０μｍ以上３００μｍ以下の厚みであるため、前記意匠面１１ａを構成する表面材１３の肉厚を薄くすることが容易となる。このため、スイッチ１１をコンパクトにすることができる。加えて、スイッチ１１が厚ぼったくならないので、該スイッチ１１の操作性を向上させることができる。   -Since the 2nd cavity 26 is 20 micrometers or more and the thickness of 300 micrometers or less, it becomes easy to make thin the thickness of the surface material 13 which comprises the said design surface 11a. For this reason, the switch 11 can be made compact. In addition, since the switch 11 does not become thicker, the operability of the switch 11 can be improved.

・ 基材１２の凸部１２ａの先端面１２ｂと表面材１３の表面１３ａとは面一であるため、意匠面１１ａに凹凸が生じない。このため、該意匠面１１ａの意匠性を向上させることができる。   -Since the front end surface 12b of the convex part 12a of the base material 12 and the surface 13a of the surface material 13 are the same, an unevenness | corrugation does not arise in the design surface 11a. For this reason, the designability of the design surface 11a can be improved.

・ 基材１２の側面１２ｃは、前記第１及び第２移動金型２３，２５が型開きする方向と平行であるため、前記意匠面１１ａの断面がコの字状、すなわち、前記意匠面１１ａが直角に曲折していても容易に該意匠面１１ａに遮光部を形成することができる。よって、直角に曲折した意匠面を持つ車両内装用スイッチやオーディオカバー等を成形するのに都合がよい。さらに、前記第１移動金型２３と前記第２移動金型２５とを交換する成形方法では、基材１２の側面１２ｃの表面に形成される表面材１３の厚みを、前記基材１２の上面に形成された表面材１３の厚みと同じにすることが容易である。   Since the side surface 12c of the base 12 is parallel to the direction in which the first and second moving molds 23 and 25 open, the cross section of the design surface 11a is a U-shape, that is, the design surface 11a. Even if it is bent at a right angle, the light shielding portion can be easily formed on the design surface 11a. Therefore, it is convenient for molding a vehicle interior switch or an audio cover having a design surface bent at a right angle. Furthermore, in the molding method in which the first moving mold 23 and the second moving mold 25 are exchanged, the thickness of the surface material 13 formed on the surface of the side surface 12c of the base 12 is set to the upper surface of the base 12 It is easy to make it the same as the thickness of the surface material 13 formed.

・ 前記液状熱硬化型塗料は接着性を有するため、基材１２に対する表面材１３の耐剥離性を向上させることができる。
・ 液状熱硬化型塗料の粘度は、摂氏２５度において３Ｐａ・ｓ以上１００Ｐａ・ｓ以下であるため、極めて狭い第２キャビティ２６（厚みが２０μｍ以上３００μｍ以下）であっても、該第２キャビティ２６の隅々まで液状熱硬化型塗料が入り込むので、熱可塑性樹脂を用いる場合と比べて前記表面材１３の肉厚を薄くすることが容易となる。このため、スイッチ１１をコンパクトに形成することができる。 -Since the said liquid thermosetting type paint has adhesiveness, the peeling resistance of the surface material 13 with respect to the base material 12 can be improved.
The viscosity of the liquid thermosetting paint is 3 Pa · s or more and 100 Pa · s or less at 25 degrees Celsius, so even if the second cavity 26 is very narrow (thickness is 20 μm or more and 300 μm or less), the second cavity 26 Since the liquid thermosetting paint enters every corner, it is easy to reduce the thickness of the surface material 13 as compared with the case of using a thermoplastic resin. For this reason, the switch 11 can be formed compactly.

なお、前記実施形態は、次のように変更して具体化することも可能である。
・ 前記実施形態の透光表示体を、車両のフロントグリルのエンブレム、バックパネル、センターピラー等に用いてもよい。 In addition, the said embodiment can also be changed and actualized as follows.
-You may use the translucent display body of the said embodiment for the emblem, back panel, center pillar, etc. of the front grille of a vehicle.

・ 前記光透過部と前記遮光部とは、面一でなくてもよい。例えば、基材１２の凸部１２ａの先端面１２ｂが表面材１３の表面１３ａより突出していてもよく、あるいは前記先端面１２ｂが表面材１３の表面１３ａより凹んでいてもよい。   -The light transmission part and the light-shielding part may not be flush with each other. For example, the tip surface 12 b of the convex portion 12 a of the base material 12 may protrude from the surface 13 a of the surface material 13, or the tip surface 12 b may be recessed from the surface 13 a of the surface material 13.

・ 前記基材１２から、前記第１及び第２移動金型２３，２５が型開きする方向と平行に延びる面を省略して、基材１２を平板状としてもよい。   The surface extending from the base material 12 in parallel with the direction in which the first and second moving molds 23 and 25 are opened may be omitted, and the base material 12 may be flat.

実施形態のスイッチの斜視図。The perspective view of the switch of embodiment. 図１の２−２線断面図。FIG. 2 is a sectional view taken along line 2-2 in FIG. 1. 基材成形時の作用を示す断面図。Sectional drawing which shows the effect | action at the time of base-material shaping | molding. 基材と第２移動金型とで第２キャビティを形成したときの断面図。Sectional drawing when a 2nd cavity is formed with a base material and a 2nd movement metal mold | die. 第２キャビティに液状熱硬化型塗料を充填したときの断面図。Sectional drawing when filling a 2nd cavity with a liquid thermosetting type coating material.

符号の説明Explanation of symbols

１１…透光表示体としてのスイッチ、１１ａ…意匠面、１２…基材、１２ａ…凸部、１２ｂ…意匠面及び光透過部を構成する先端面、１２ｃ…前記第１及び第２移動金型が型開きする方向と平行に延びる面としての側面、１３…表面材、１３ａ…意匠面及び遮光部を構成する表面、２２…固定金型、２３…第１移動金型、２４…第１キャビティ、２５…第２移動金型、２６…第２キャビティ。   DESCRIPTION OF SYMBOLS 11 ... Switch as a translucent display body, 11a ... Design surface, 12 ... Base material, 12a ... Convex part, 12b ... Front end surface which comprises a design surface and a light transmissive part, 12c ... The said 1st and 2nd moving mold Side surface as a surface extending parallel to the direction in which the mold opens, 13... Surface material, 13a... Design surface and surface constituting light shielding part, 22... Fixed mold, 23. 25 ... second moving mold, 26 ... second cavity.

Claims (6)

意匠面に光透過部と遮光部とを備えた透光表示体の製造方法であって、
基材を成形する第１工程と、前記基材の表面に表面材を層状に成形する第２工程とを備え、
前記第１工程は、固定金型と第１移動金型とで形成される第１キャビティに光透過性を有する樹脂を充填して表面に凸部を有する基材を成形する工程であり、
前記第２工程は、前記固定金型と第２移動金型とを型締めすることにより、前記凸部の先端面と第２移動金型とを密着させるとともに、前記基材の表面と前記第２移動金型との間に第２キャビティを形成し、該第２キャビティに遮光性を有する塗料を充填して表面材を成形する工程であり、
前記第２キャビティを、２０μｍ以上３００μｍ以下の厚みにしたことを特徴とする透光表示体の製造方法。 A method for producing a light-transmitting display body comprising a light-transmitting portion and a light-shielding portion on a design surface,
A first step of forming a base material, and a second step of forming a surface material into a layer on the surface of the base material,
The first step is a step of forming a substrate having a convex portion on the surface by filling a resin having light permeability into a first cavity formed by a fixed mold and a first moving mold.
In the second step, the fixed mold and the second moving mold are clamped to bring the tip end surface of the convex portion into contact with the second moving mold, and the surface of the base material and the second moving mold Forming a second cavity between the two moving molds, filling the second cavity with a light-shielding paint, and molding a surface material;
The method for producing a light-transmitting display body, wherein the second cavity has a thickness of 20 μm or more and 300 μm or less. 前記光透過部と前記遮光部とは、面一とすることを特徴とする請求項１に記載の透光表示体の製造方法。 The method for manufacturing a translucent display body according to claim 1, wherein the light transmission part and the light shielding part are flush with each other. 前記基材は、前記第１及び第２移動金型が型開きする方向と平行に延びる面を備えていることを特徴とする請求項１または請求項２に記載の透光表示体の製造方法。 3. The method for manufacturing a translucent display according to claim 1, wherein the base includes a surface extending in parallel with a direction in which the first and second moving molds open. 4. . 前記塗料は、液状熱硬化型塗料であることを特徴とする請求項１から請求項３のいずれか一項に記載の透光表示体の製造方法。 The said coating material is a liquid thermosetting coating material, The manufacturing method of the translucent display body as described in any one of Claims 1-3 characterized by the above-mentioned. 前記塗料の粘度は、摂氏２５度において３Ｐａ・ｓ以上１００Ｐａ・ｓ以下であることを特徴とする請求項１から請求項４のいずれか一項に記載の透光表示体の製造方法。 5. The method for manufacturing a translucent display according to claim 1, wherein the viscosity of the paint is 3 Pa · s or more and 100 Pa · s or less at 25 degrees Celsius. 意匠面に光透過部と遮光部とを備えた透光表示体であって、
光透過性を有する樹脂よりなる基材と、該基材の表面に形成された遮光性を有する塗料よりなる表面材とを備え、
前記光透過部は前記基材の表面に形成された凸部よりなり、前記遮光部は前記基材の表面を層状に覆う表面材よりなり、
前記光透過部と前記遮光部とは面一であるとともに、前記表面材の厚みが２０μｍ以上３００μｍ以下であることを特徴とする透光表示体。 A translucent display body having a light transmission part and a light shielding part on a design surface,
A base material made of a resin having light permeability, and a surface material made of a paint having a light shielding property formed on the surface of the base material,
The light transmission part is made of a convex part formed on the surface of the base material, and the light shielding part is made of a surface material that covers the surface of the base material in a layered manner,
The light transmissive portion and the light shielding portion are flush with each other, and the thickness of the surface material is 20 μm or more and 300 μm or less.
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KR20180065356A (en) * 2016-12-07 2018-06-18 코웨이 주식회사 Manufacturing of front cover

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