JP6597529B2 - 内装部品及びその製造方法 - Google Patents
内装部品及びその製造方法 Download PDFInfo
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Landscapes
- Engineering & Computer Science (AREA)
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- Transportation (AREA)
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- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
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- Sewing Machines And Sewing (AREA)
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Description
すなわち、図11(a)に示すように、ステッチ模様を基材103の外縁付近に形成する場合、縫い針101を基材103の表面103Aに対して面直方向から差し込むと、縫い針101が基材103の外縁に形成された外縁リブ103C等に干渉する場合がある。そのため、図11(b)に示すように、上記干渉を回避すべく、縫い針101を基材103の表面103Aに対して傾斜状に差し込む必要があるが、その場合、縫い針101の先端が基材103の表面103Aで滑ることによって、基材103を保持する受け治具108と干渉し、縫い針101が簡単に折損又は変形等してしまう恐れがあった。
(1)基材と当該基材の表面に接着された表皮材とからなり、前記表皮材の表面側から前記基材の裏面側まで縫い針に係合されて前記基材の表面に対して傾斜状に挿通された糸のループ部分が前記基材の裏面側に固定され、前記表皮材の表面側に前記糸のステッチ模様が形成された内装部品であって、
前記基材の表面側には、前記ステッチ模様の糸が挿通される位置に前記縫い針の滑り防止用座面が形成されていることを特徴とする。
前記基材の裏面側又は前記滑り防止用座面と前記表皮材との間には、前記ステッチ模様の糸が挿通される位置に伸縮自在のゴム系部材を備えていることを特徴とする。
前記滑り防止用座面は、前記基材の表面に対して所定の傾斜角度で凹状に、かつ、ステッチ模様の長手方向に沿って連続状に形成されていることを特徴とする。
前記傾斜角度は、前記滑り防止用座面に対する前記糸の挿通角度が90度±30度以内となるように形成されていることを特徴とする。
前記ステッチ模様を形成するステッチ加工装置には、前記表皮材の上方に配置され前記縫い針を作動させて前記糸を前記基材に供給する糸供給装置と、前記基材の裏面に当接し当該基材を所定の姿勢で保持する受け治具とを備え、
前記縫い針の糸供給側の外周面には、前記糸を案内する糸溝が針軸方向に形成されているとともに、
前記受け治具には、前記基材の裏面側に挿通された前記縫い針の糸溝側の外周面と微小隙間をもって針軸方向で略平行に配置された糸押し面と、前記糸押し面と前記縫い針を挟んで対向し前記糸のループ部分が収容可能に配置された糸逃し面とを備え、
前記縫い針を前記基材の裏面側に挿通してから引き戻す時に、前記糸押し面によって前記糸溝内の糸を針軸心に対して前記糸溝と反対方向へ押し出し、前記縫い針と前記糸逃し面との間で、前記糸のループ部分を形成することを特徴とする。
前記糸供給装置には、前記縫い針が前記基材の表面に対して傾斜状に挿通可能に形成された針挿通孔を有する表皮材押え部を備え、縫製時に前記針挿通孔によって前記縫い針の横移動を規制することを特徴とする。
前記針挿通孔の孔中心は、前記縫い針の針軸心に対して前記糸溝側へ偏心して形成され、前記針挿通孔の内周面と糸溝と反対側の縫い針の外周面との間には、微小隙間が形成されていることを特徴とする。
<ステッチ模様を備えた内装部品の構造>
まず、本実施形態に係る第1実施例のステッチ模様を備えた内装部品の構造を、図1〜図4を用いて説明する。図1に、本発明に係る実施形態である内装部品の斜視図を示す。図2に、図1に示す内装部品において第1実施例のステッチ模様を表すA−A断面図を示す。図3に、図2に示すB−B断面図を示す。図4に、図3に示す基材の表面に対する滑り防止用座面の傾斜角度と滑り防止用座面に対する糸の挿通角度との関係を説明する部分断面図を示し、(a)は、挿通角度が90度の場合を示し、(b)は挿通角度が110度の場合を示す。
次に、本内装部品におけるステッチ模様を形成する加工手順を、図5〜図7を用いて詳細に説明する。図5に、図2に示す第1実施例の内装部品を製造するステッチ加工装置の部分断面図を示す。図6に、図5に示すC−C断面図を示す。図7に、図5に示すD矢視図を示す。
<ステッチ模様を備えた内装部品の構造>
次に、本実施形態に係る第2実施例のステッチ模様を備えた内装部品の構造を、図8、図9を用いて説明する。図8に、図1に示す内装部品において第2実施例のステッチ模様を表すA−A断面図を示す。図9に、図8に示すE−E断面図を示す。
以上、詳細に説明したように、本実施形態に係る内装部品10、10Bによれば、基材1の表面1A側には、ステッチ模様3の糸31が挿通される位置に縫い針71の滑り防止用座面1Cが形成されているので、糸31を係合した縫い針71を基材1の表面1Aに対して傾斜状に差し込む場合でも、縫い針71の先端が、基材1の表面1Aに対して滑りにくく、縫い針71と受け治具6の逃がし孔62との隙間を略一定に保持することができる。そのため、基材1の裏面1Bへ糸31のループ部分32を安定して形成することができる。また、縫い針71と受け治具6との干渉を有効に回避できる。
上述した実施形態は、本発明の要旨を変更しない範囲で変更することができる。例えば、本実施形態である内装部品10、10Bによれば、滑り防止用座面1Cは、基材1の表面1Aに対して所定の傾斜角度θで凹状に、かつ、ステッチ模様3の長手方向に沿って連続状に形成されているが、必ずしも、上記形態に限定されない。滑り防止用座面1Cは、縫い針71の針先に対する滑り止め機能を有するように形成されていれば、図10(a)に示すように、先行針73で基材1の表面1A側に楔状凹面1Ccを形成した場合でも、図10(b)に示すように、ヤスリ等で粗面化させるか、又は微小な山谷面1Cdを形成した場合でもよい。
1A 表面
1B 裏面
1C 滑り防止用座面
2 表皮材
3 ステッチ模様
4、4B ゴム系部材
5 接着剤
6 受け治具
7 糸供給装置
10、10B 内装部品
20 ステッチ加工装置
31 糸(上糸)
32 ループ部分
41、41B 糸挿通孔
71 縫い針
71SC 外周面
72 表皮材押え部
621 糸押し面
622 糸逃し面
712 糸溝
724 針挿通孔
θ 傾斜角度
α 挿通角度
Claims (7)
- 基材と当該基材の表面に接着された表皮材とからなり、前記表皮材の表面側から前記基材の裏面側まで縫い針に係合されて前記基材の表面に対して傾斜状に挿通された糸のループ部分が前記基材の裏面側に固定され、前記表皮材の表面側に前記糸のステッチ模様が形成された内装部品であって、
前記基材の表面側には、前記ステッチ模様の糸が挿通される位置に前記縫い針の滑り防止用座面が形成されていることを特徴とする内装部品。 - 請求項1に記載された内装部品において、
前記基材の裏面側又は前記滑り防止用座面と前記表皮材との間には、前記ステッチ模様の糸が挿通される位置に伸縮自在のゴム系部材を備えていることを特徴とする内装部品。 - 請求項1又は請求項2に記載された内装部品において、
前記滑り防止用座面は、前記基材の表面に対して所定の傾斜角度で凹状に、かつ、ステッチ模様の長手方向に沿って連続状に形成されていることを特徴とする内装部品。 - 請求項3に記載された内装部品において、
前記傾斜角度は、前記滑り防止用座面に対する前記糸の挿通角度が90度±30度以内となるように形成されていることを特徴とする内装部品。 - 請求項1乃至請求項4のいずれか1項に記載された内装部品の製造方法において、
前記ステッチ模様を形成するステッチ加工装置には、前記表皮材の上方に配置され前記縫い針を作動させて前記糸を前記基材に供給する糸供給装置と、前記基材の裏面に当接し当該基材を所定の姿勢で保持する受け治具とを備え、
前記縫い針の糸供給側の外周面には、前記糸を案内する糸溝が針軸方向に形成されているとともに、
前記受け治具には、前記基材の裏面側に挿通された前記縫い針の糸溝側の外周面と微小隙間をもって針軸方向で略平行に配置された糸押し面と、前記糸押し面と前記縫い針を挟んで対向し前記糸のループ部分が収容可能に配置された糸逃し面とを備え、
前記縫い針を前記基材の裏面側に挿通してから引き戻す時に、前記糸押し面によって前記糸溝内の糸を針軸心に対して前記糸溝と反対方向へ押し出し、前記縫い針と前記糸逃し面との間で、前記糸のループ部分を形成することを特徴とする内装部品の製造方法。 - 請求項5に記載された内装部品の製造方法において、
前記糸供給装置には、前記縫い針が前記基材の表面に対して傾斜状に挿通可能に形成された針挿通孔を有する表皮材押え部を備え、縫製時に前記針挿通孔によって前記縫い針の横移動を規制することを特徴とする内装部品の製造方法。 - 請求項6に記載された内装部品の製造方法において、
前記針挿通孔の孔中心は、前記縫い針の針軸心に対して前記糸溝側へ偏心して形成され、前記針挿通孔の内周面と糸溝と反対側の縫い針の外周面との間には、微小隙間が形成されていることを特徴とする内装部品の製造方法。
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