JPH10287248A - Steering wheel - Google Patents
Steering wheelInfo
- Publication number
- JPH10287248A JPH10287248A JP9603397A JP9603397A JPH10287248A JP H10287248 A JPH10287248 A JP H10287248A JP 9603397 A JP9603397 A JP 9603397A JP 9603397 A JP9603397 A JP 9603397A JP H10287248 A JPH10287248 A JP H10287248A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- steering wheel
- abs resin
- thermoplastic resin
- glass fiber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Steering Controls (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ステアリングホイ
ール、特に表面に加飾材を設けたステアリングホイール
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steering wheel, and more particularly to a steering wheel provided with a decorative material on its surface.
【０００２】[0002]
【従来の技術】ステアリングホイールのリム部を硬質樹
脂で被覆し、その表面に例えば木目調の加飾材を施すス
テアリングホイールが知られている（類似技術として、
実公昭５４−１６９７号公報参照）。この種のステアリ
ングホイールの場合、リム部を被覆する硬質樹脂は熱硬
化性樹脂で、射出成形が行えないため、大量生産に不向
きである。そこで、リム部を射出成形可能な熱可塑性樹
脂で被覆することが考えられる。2. Description of the Related Art There is known a steering wheel in which a rim portion of a steering wheel is coated with a hard resin, and a surface of the rim portion is decorated with, for example, a wood-grain decorative material.
See Japanese Utility Model Publication No. 54-1697). In the case of this type of steering wheel, the hard resin coating the rim portion is a thermosetting resin and cannot be injection-molded, and is not suitable for mass production. Therefore, it is conceivable to cover the rim portion with a thermoplastic resin that can be injection molded.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、熱可塑
性樹脂は一般的に芯金となる金属との熱膨張率差が大き
く、射出成形後の冷却により熱可塑性樹脂が割れるおそ
れがある。また、表面に施される加飾材との密着性にも
問題がある。However, the thermoplastic resin generally has a large difference in thermal expansion coefficient from the metal used as the core metal, and there is a possibility that the thermoplastic resin may be broken by cooling after injection molding. In addition, there is a problem in adhesion to a decorative material applied to the surface.
【０００４】この発明は、このような従来の技術に着目
してなされたものであり、種々の熱可塑性樹脂を鋭意研
究した結果、射出成形後の冷却により割れず且つ加飾材
との密着性の良い熱可塑性樹脂を見い出したものであ
る。The present invention has been made by paying attention to such a conventional technique. As a result of intensive studies on various thermoplastic resins, it has been found that the thermoplastic resin does not crack due to cooling after injection molding and has good adhesion to a decorative material. It has been found that the thermoplastic resin has a good quality.
【０００５】[0005]
【課題を解決するための手段】請求項１記載の発明は、
リム部を熱可塑性樹脂で被覆し、該熱可塑性樹脂の表面
に加飾材を設けるステアリングホイールであって、前記
熱可塑性樹脂がガラス繊維を５〜１５ｗｔ％含むＡＢＳ
樹脂である。ここで、「加飾材」を形成する方法として
は、流体印刷により、例えば木目調等の模様を転写し、
その後、表面にクリア塗装を施す流体印刷法、本木の薄
板を接着剤で貼り付ける突板貼り法、ＡＢＳ樹脂表面に
スプレー塗装したり或いは成形前に型内表面に塗料をイ
ンモールドしておく塗装法、予備成形したフィルムを型
内にインモールドしておくフィルムインモールド法、加
飾溶液中へ硬質樹脂部分を沈めて加飾層を形成するディ
ップ法などがある。According to the first aspect of the present invention,
A steering wheel in which a rim portion is covered with a thermoplastic resin and a decorating material is provided on a surface of the thermoplastic resin, wherein the thermoplastic resin contains 5 to 15 wt% of glass fiber.
Resin. Here, as a method of forming the “decorative material”, for example, a pattern such as woodgrain is transferred by fluid printing,
After that, a fluid printing method of applying a clear coating on the surface, a veneer sticking method of attaching a thin sheet of wood with an adhesive, a spray coating on the ABS resin surface, or a coating in which the paint is in-molded on the inner surface of the mold before molding Methods, a film in-mold method in which a preformed film is in-molded in a mold, and a dipping method in which a decorative layer is formed by sinking a hard resin portion into a decorative solution.
【０００６】請求項１記載の発明によれば、熱可塑性樹
脂の中でもＡＢＳ樹脂は本来的に加飾材との密着性が良
い。また、芯金となる金属との熱膨張率は相違するが、
ガラス繊維を５〜１５ｗｔ％含有しているため、強度が
高まり、射出成形後に冷却しても割れない。尚、ガラス
繊維の前記含有量はＡＢＳ樹脂の射出成形時における流
動性を阻害しない範囲でもある。尚、好ましいガラス繊
維含有のＡＢＳ樹脂は、射出成形の加工性及び環境応力
亀裂抵抗性を満足するため、次の性質を有する。According to the first aspect of the present invention, among thermoplastic resins, ABS resin inherently has good adhesion to the decorative material. In addition, although the coefficient of thermal expansion with the metal serving as the core metal is different,
Since the glass fiber is contained in an amount of 5 to 15 wt%, the strength is increased, and the glass fiber is not broken even when cooled after injection molding. The content of the glass fiber is also within a range that does not impair the flowability of the ABS resin during injection molding. The preferred glass fiber-containing ABS resin has the following properties in order to satisfy the workability of injection molding and the resistance to environmental stress cracking.
【０００７】（０） ガラス繊維含量 ５〜
１５wt％ （１） 成形品中のガラス繊維長さ 0.2〜2.8mm （２） メルトフローレート（JIS・Ｋ7210、220℃、10
Kg荷重）4〜60g／10分 （３） 引っ張り強さ(ASTM・Ｄ638） 550〜800Kgｆ/c
m2 （４） 線膨張係数 （３〜６）Ｘ１０
-5cm/cm℃ 請求項２記載の発明は、硬質樹脂の最小厚さが５ｍｍ以
上である。(0) Glass fiber content 5
15wt% (1) Glass fiber length in molded product 0.2-2.8mm (2) Melt flow rate (JIS K7210, 220 ℃, 10
(Kg load) 4 ~ 60g / 10min (3) Tensile strength (ASTM ・ D638) 550 ~ 800kgf / c
m 2 (4) Coefficient of linear expansion (3 to 6) X10
-5 cm / cm ° C. In the invention described in claim 2, the minimum thickness of the hard resin is 5 mm or more.
【０００８】請求項２記載の発明によれば、硬質樹脂の
最小厚さが５ｍｍ以上であるため、射出成形型内におけ
る熱可塑性樹脂の通路が確保され樹脂の流動性が良い。According to the second aspect of the present invention, since the minimum thickness of the hard resin is 5 mm or more, a passage for the thermoplastic resin in the injection mold is ensured, and the fluidity of the resin is good.
【０００９】[0009]
【発明の実施の形態】本発明の好適な実施形態を図１〜
図３に基づいて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention is shown in FIGS.
This will be described with reference to FIG.
【００１０】符号１はステアリングホイールで、円環状
のリム部２と、中心部を形成するボス部３と、リム部２
とボス部３を連結するスポーク部４とから成っている。
リム部２の内部にはパイプ状の芯金５が設けられ、スポ
ーク部４の内部には別の形状をした芯金６が設けられ、
ボス部３の内部にはベース７が設けられている。Reference numeral 1 denotes a steering wheel, which is an annular rim portion 2, a boss portion 3 forming a central portion, and a rim portion 2.
And a spoke 4 connecting the boss 3.
A pipe-shaped metal core 5 is provided inside the rim portion 2, and a metal core 6 having another shape is provided inside the spoke portion 4,
A base 7 is provided inside the boss 3.
【００１１】リム部２及びスポーク部４の一部は、熱可
塑性樹脂としてのＡＢＳ樹脂８にて被覆されている。こ
のＡＢＳ樹脂８には、１０ｗｔ％のガラス繊維が含有さ
れている。また、ＡＢＳ樹脂８の表面には、木目調の加
飾材９が施されている。この加飾材１２は流体印刷法に
より形成されている。A part of the rim part 2 and a part of the spoke part 4 are covered with an ABS resin 8 as a thermoplastic resin. The ABS resin 8 contains 10 wt% of glass fiber. The surface of the ABS resin 8 is provided with a wood-grain decorative material 9. The decorative material 12 is formed by a fluid printing method.
【００１２】次に、このステアリングホイール１の製造
方法を説明する。まず、射出成形型内にリム部２及びス
ポーク部４の芯金５、６をセットし、その型内にガラス
繊維を含むＡＢＳ樹脂８を射出する。ＡＢＳ樹脂８を注
入するゲートＧは合計３ケ所ある。Next, a method of manufacturing the steering wheel 1 will be described. First, the core metals 5 and 6 of the rim portion 2 and the spoke portion 4 are set in an injection mold, and an ABS resin 8 containing glass fibers is injected into the mold. There are a total of three gates G for injecting the ABS resin 8.
【００１３】そして、図３に示すように、リム部２にお
ける芯金５の外径Ｄは１２ｍｍφで、ＡＢＳ樹脂８の最
小厚さｄ1 は６ｍｍで、最大厚さｄ2 は１０ｍｍであ
る。最小厚さｄ1 は、型内におけるＡＢＳ樹脂８の最も
狭い通路となるもので、この最小厚さｄ1 が６ｍｍ確保
されているため、ＡＢＳ樹脂８の型内への流動性は十分
に確保される。このように、リム部２の芯金５等を被覆
するＡＢＳ樹脂８を、大量生産可能な射出成形で行うこ
とができる。As shown in FIG. 3, the outer diameter D of the metal core 5 in the rim portion 2 is 12 mmφ, the minimum thickness d1 of the ABS resin 8 is 6 mm, and the maximum thickness d2 is 10 mm. The minimum thickness d1 is the narrowest passage of the ABS resin 8 in the mold. Since the minimum thickness d1 is 6 mm, the fluidity of the ABS resin 8 into the mold is sufficiently ensured. . As described above, the ABS resin 8 that covers the core metal 5 and the like of the rim portion 2 can be formed by injection molding that can be mass-produced.
【００１４】そして、ＡＢＳ樹脂８を射出成形型から出
して冷却しても、ＡＢＳ樹脂８中に１０ｗｔ％のガラス
繊維が含まれているため、全体強度が高まっており、Ａ
ＢＳ樹脂８が冷却中に割れることはない。[0014] Even when the ABS resin 8 is taken out of the injection mold and cooled, since the ABS resin 8 contains 10 wt% of glass fibers, the overall strength is increased.
The BS resin 8 does not crack during cooling.
【００１５】以上のような射出成形工程により、リム部
２及びスポーク部４の一部をＡＢＳ樹脂８で被覆した芯
金５、６が得られる（図２参照）。By the above-described injection molding process, cores 5 and 6 in which the rim 2 and the spokes 4 are partially covered with the ABS resin 8 are obtained (see FIG. 2).
【００１６】次に、ＡＢＳ樹脂８の表面には、流体印刷
法により木目調の加飾材９が施される。その際、ガラス
繊維が、その含有量の多少によって露出する程度は異な
るが、リム部２の表面に繊維の先端が露出してしまうの
で、塗料をリム部２表面に塗布して、露出したガラス繊
維を覆うように塗膜を形成する。その後、サンドペーパ
ー等によりサンディングして塗膜の表面を研磨してリム
部２の表面全体を平滑にする。特に、印刷塗膜が数ミク
ロンと薄い場合、表面を平滑にすることによって、露出
したガラス繊維が印刷塗膜を破ることを防止できる。Ａ
ＢＳ樹脂８は、本来的に加飾材９に対する密着性が良い
ため、加飾材９の確実な接着を行うことができる。最後
にベース７にパッドを取付けてボス部３を形成し、ステ
アリングホイール１が完成する。Next, a wood-grain decorative material 9 is applied to the surface of the ABS resin 8 by a fluid printing method. At this time, the degree to which the glass fiber is exposed varies depending on the content thereof, but the tip of the fiber is exposed on the surface of the rim portion 2. A coating is formed to cover the fibers. Thereafter, the surface of the coating film is polished by sanding with sandpaper or the like to smooth the entire surface of the rim portion 2. In particular, when the print coating is as thin as several microns, the surface is smoothed to prevent the exposed glass fibers from breaking the print coating. A
Since the BS resin 8 inherently has good adhesion to the decorating material 9, the decorating material 9 can be securely bonded. Finally, a pad is attached to the base 7 to form the boss 3 and the steering wheel 1 is completed.
【００１７】[0017]
【発明の効果】請求項１記載の発明によれば、熱可塑性
樹脂の中でもＡＢＳ樹脂は本来的に加飾材との密着性が
良い。また、芯金となる金属との熱膨張率は相違する
が、ガラス繊維を５〜１５ｗｔ％含有しているため、強
度が高まり、射出成形後に冷却しても割れない。尚、ガ
ラス繊維の前記含有量はＡＢＳ樹脂の射出成形時におけ
る流動性を阻害しない範囲でもある。According to the first aspect of the present invention, among the thermoplastic resins, the ABS resin inherently has good adhesion to the decorative material. Although the coefficient of thermal expansion is different from that of the metal serving as the core metal, since the glass fiber is contained in an amount of 5 to 15% by weight, the strength is increased and the glass does not crack even after being cooled after injection molding. The content of the glass fiber is also within a range that does not impair the flowability of the ABS resin during injection molding.
【００１８】請求項２記載の発明によれば、硬質樹脂の
最小厚さが５ｍｍ以上であるため、射出成形型内におけ
る熱可塑性樹脂の通路が確保され樹脂の流動性が良い。According to the second aspect of the present invention, since the minimum thickness of the hard resin is 5 mm or more, the passage of the thermoplastic resin in the injection mold is ensured, and the fluidity of the resin is good.
【図１】この発明の実施形態に係るステアリングホイー
ルの平面図。FIG. 1 is a plan view of a steering wheel according to an embodiment of the present invention.
【図２】芯金に熱可塑性樹脂を形成した状態を示すステ
アリングホイールの平面図。FIG. 2 is a plan view of the steering wheel in a state where a thermoplastic resin is formed on a cored bar.
【図３】図１中矢示ＳＡ−ＳＡ線に沿う断面図。FIG. 3 is a sectional view taken along the line SA-SA shown in FIG.
２ リム部 ３ ボス部 ４ スポーク部 ５、６ 芯金 ８ ＡＢＳ樹脂 ９ 加飾材 ｄ1 最小厚さ Ｇ ゲート 2 Rim 3 Boss 4 Spoke 5, 6 Core 8 ABS resin 9 Decorating material d1 Minimum thickness G Gate
───────────────────────────────────────────────────── フロントページの続き (72)発明者 田中 久雄 静岡県富士市青島町218番地 日本プラス ト株式会社内 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hisao Tanaka 218 Aoshima-cho, Fuji-shi, Shizuoka Prefecture Japan Plastics Co., Ltd.
Claims (2)
し、該熱可塑性樹脂の表面に加飾材を設けるステアリン
グホイールであって、 前記熱可塑性樹脂がガラス繊維を５〜１５ｗｔ％含むＡ
ＢＳ樹脂であることを特徴とするステアリングホイー
ル。1. A steering wheel in which at least a rim portion is covered with a thermoplastic resin and a decorating material is provided on a surface of the thermoplastic resin, wherein the thermoplastic resin contains 5 to 15 wt% of glass fibers.
A steering wheel characterized by being a BS resin.
あって、 熱可塑性樹脂の最小厚さが５ｍｍ以上であることを特徴
とするステアリングホイール。2. The steering wheel according to claim 1, wherein the minimum thickness of the thermoplastic resin is 5 mm or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9603397A JPH10287248A (en) | 1997-04-14 | 1997-04-14 | Steering wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9603397A JPH10287248A (en) | 1997-04-14 | 1997-04-14 | Steering wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10287248A true JPH10287248A (en) | 1998-10-27 |
Family
ID=14154133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9603397A Pending JPH10287248A (en) | 1997-04-14 | 1997-04-14 | Steering wheel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10287248A (en) |
-
1997
- 1997-04-14 JP JP9603397A patent/JPH10287248A/en active Pending
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