JP5562620B2 - Manufacturing method of headrest - Google Patents
Manufacturing method of headrest Download PDFInfo
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- JP5562620B2 JP5562620B2 JP2009275069A JP2009275069A JP5562620B2 JP 5562620 B2 JP5562620 B2 JP 5562620B2 JP 2009275069 A JP2009275069 A JP 2009275069A JP 2009275069 A JP2009275069 A JP 2009275069A JP 5562620 B2 JP5562620 B2 JP 5562620B2
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Description
本発明は、後方視認可能な開口部が設けられたヘッドレストの製造方法に関するものである。 The present invention relates to a method of manufacturing a headrest provided with an opening that can be viewed rearward.
従来、このような分野の技術として、特開平１０−１４６８４８号公報がある。この公報に記載されたヘッドレストには、後方視認可能な開口部(開窓部)が形成され、この開口部の壁面をなすトリムカバーの開口形成部は、トリムカバーの前部の一部として帯状に形成された第１の開口形成半部と、トリムカバーの後部の一部として帯状に形成された第２の開口形成半部とで２分割されている。そして、ヘッドレストの開口部の壁面では、第１の開口形成半部の端部と第２の開口形成半部の端部とが突き合わされてはいるが、端部間に隙間ができるので、ゴム性のベルトでこの隙間を塞ぎ、この隙間から発泡液が漏れ出すことを防いでいる。 Conventionally, there is JP-A-10-146848 as a technology in such a field. In the headrest described in this publication, an opening (a window portion) that can be visually recognized is formed, and the opening forming portion of the trim cover that forms the wall surface of the opening is a belt-like shape as a part of the front portion of the trim cover. The first opening forming half and the second opening forming half formed in a band shape as a part of the rear part of the trim cover are divided into two. And in the wall surface of the opening part of a headrest, although the edge part of the 1st opening formation half part and the edge part of the 2nd opening formation half part are faced | matched, since a clearance gap is made between edge parts, it is rubber. This gap is closed with a conductive belt, and the foaming liquid is prevented from leaking from the gap.
しかしながら、前述した従来のヘッドレストの開口部の壁面では、第１の開口形成半部の端部と第２の開口形成半部の端部とが突き合わされているので、第１の開口形成半部の端部と第２の開口形成半部の端部との隙間にバラツキが生じ易く、開口部の外観品質を劣化させるといった問題点があった。 However, in the wall surface of the opening of the conventional headrest described above, the end of the first opening forming half and the end of the second opening forming half are abutted with each other, so the first opening forming half There is a problem that the gap between the end portion of the opening and the end portion of the second opening forming half is likely to vary, and the appearance quality of the opening portion is deteriorated.
本発明は、トリムカバーに設けられた開口部の壁部の湾曲部分に皺を寄り難くして、開口部の外観品質を向上させるようにしたヘッドレストを提供することを目的とする。 SUMMARY OF THE INVENTION An object of the present invention is to provide a headrest that improves the appearance quality of an opening by making it difficult to lean the curved portion of the wall of the opening provided in the trim cover.
本発明は、後方視認可能で、上下で対向するフラット面と左右対称な湾曲面を有する開口部が設けられた袋状のトリムカバー内に発泡液が注入されて一体発泡成形されたヘッドレストの製造方法において、
前記開口部の壁部をなす前記トリムカバーの開口形成部は、前記トリムカバーの前部の一部として帯状に形成された第１の開口形成半部と、前記トリムカバーの後部の一部として帯状に形成された第２の開口形成半部とで２分割し、
前記左右対称な湾曲面を形成する第１の開口形成半部の湾曲部と前記湾曲面を形成する前記第２の開口形成半部の湾曲部には、湾曲形状の保形板を縫着し、前記第１の開口形成半部と前記第２の開口形成半部と前記保形板とを重ね合わせ、
前記トリムカバーの前部と後部の前記第１の開口形成半部と前記第２の開口形成半部の直線部を重ね合わせて、前記開口部の前記壁部を形成した後、
開口部内に中子を装填して、中子で前記左右の保形板を押圧し、前記トリムカバー内に前記発泡液を注入して一体発泡成形することを特徴とする。
The present invention provides a headrest that is integrally foam-molded by injecting a foaming liquid into a bag-like trim cover provided with an opening having a flat surface that is vertically opposite and a curved surface that is symmetrical to the left and right. In the method
The opening forming portion of the trim cover that forms the wall portion of the opening includes a first opening forming half formed in a band shape as a part of the front portion of the trim cover, and a part of the rear portion of the trim cover. Dividing into two parts with the second opening forming half part formed in a band shape,
A curved shape- retaining plate is sewn on the curved portion of the first opening forming half that forms the symmetrical curved surface and the curved portion of the second opening forming half that forms the curved surface. , The first opening forming half, the second opening forming half and the shape retaining plate are overlapped,
After overlapping the straight portions of the first opening forming half and the second opening forming half of the front and rear of the trim cover to form the wall portion of the opening,
A core is loaded into the opening, the left and right shape-retaining plates are pressed with the core, and the foaming liquid is injected into the trim cover to perform integral foam molding.
このヘッドレストの製造方法においては、開口部内に装填された中子で前記左右の保形板を押圧するので、第１の開口形成半部と第２の開口形成半部との重ね合わされている部分が引張られる。そのため、第１の開口形成半部の端部と第２の開口形成半部の端部との間に隙間が発生することがなく、開口部の外観品質を向上させることができ、皺の発生を防止できる。また、第１の開口形成半部と第２の開口形成半部とを単に重ね合わせて一体発泡成形しただけでは、開口部の壁部の湾曲部分に皺が寄り易いが、本発明では、左右対称な湾曲面を形成する第１の開口形成半部の湾曲部と第２の開口形成半部の湾曲部に湾曲形状の保形板を縫着しておき、開口部の壁部の湾曲部分を予め所望の湾曲形状にしておくことで、一体発泡成形時に開口部の壁部の湾曲部分に皺が寄り難く、これによって、開口部の外観品質を更に向上させることができる。しかも、第１の開口形成半部の端部と第２の開口形成半部の端部との隙間のバラツキを気にすることなく型入れ作業を行うことができるので、作業性をも向上させることができる。 In the method of manufacturing the headrest, so pressing the left and right Hokatachiban in core loaded into the opening, it overlapped with that portion of the first opening forming half portion and the second opening formed halves Is pulled. Therefore , there is no gap between the end of the first opening forming half and the end of the second opening forming half, the appearance quality of the opening can be improved , and wrinkles are generated. Can be prevented. Further, only by integrally foam molded simply superposing a first opening forming half portion and a second opening forming halves it is wrinkled easily into the curved portion of the wall of the opening, in the present invention, left and right A curved shape retaining plate is sewn to the curved portion of the first opening forming half and the curved portion of the second opening forming half forming a symmetrical curved surface, and the curved portion of the wall portion of the opening is sewn. By making the desired curved shape in advance, it is difficult for wrinkles to come to the curved portion of the wall portion of the opening during integral foam molding, thereby further improving the appearance quality of the opening. In addition, the mold insertion operation can be performed without worrying about the variation in the gap between the end portion of the first opening formation half and the end portion of the second opening formation half, which improves workability. be able to.
また、前記開口部内に装填された中子により前記左右の保形板が押圧された状態で、前記トリムカバー内に前記発泡液が注入されて一体発泡成形される。
保形板を薄くした場合、発泡圧によって保形板が変形する虞があるので、中子によってその変形を効果的に抑制することができる。
Further, the foaming liquid is injected into the trim cover and integrally foamed in a state where the left and right shape retaining plates are pressed by the core loaded in the opening.
When the shape-retaining plate is thinned, the shape-retaining plate may be deformed by the foaming pressure, so that the deformation can be effectively suppressed by the core.
本発明によれば、トリムカバーに設けられた開口部の壁部の湾曲部分に皺を寄り難くして、開口部の外観品質を向上させることができる。 According to the present invention, it is possible to improve the appearance quality of the opening by making it difficult to lean the curved portion of the wall portion of the opening provided in the trim cover.
以下、図面を参照しつつ本発明に係るヘッドレストの好適な実施形態について詳細に説明する。 Hereinafter, a preferred embodiment of a headrest according to the present invention will be described in detail with reference to the drawings.
図１及び図２に示すように、一体発泡成形品としてのヘッドレストＨＲは、袋状のトリムカバー２と、このトリムカバー２内に注入された発泡液(例えば発泡性ウレタン)が硬化してなるパッド体３と、パッド体３内のヘッドレストフレーム４に固定されたヘッドレストステー５とからなる。 As shown in FIGS. 1 and 2, the headrest HR as an integral foam molded product is formed by curing a bag-like trim cover 2 and a foaming liquid (for example, foaming urethane) injected into the trim cover 2. The pad body 3 includes a headrest stay 5 fixed to a headrest frame 4 in the pad body 3.
このトリムカバー２は、通気性がない合成皮からなる表皮と、表皮の裏面に固着されて、スラブウレタンフォーム材からなるワディングからなり、２層タイプのものが利用されている。 The trim cover 2 is made of a two-layer type made of a skin made of a synthetic leather having no air permeability and a wadding made of a slab urethane foam material fixed to the back surface of the skin.
このヘッドレストＨＲは、格納状態すなわち最下位置の状態でシートバックＳＢの頂部６に当接する略水平で偏平な上部１０と、格納状態でシートバックＳＢの前面７に重なるように、前面７の傾斜と略同じ傾斜をもって上部１０から斜め下方に向かって延在する偏平な前側垂下部１１とを有している。 The headrest HR tilts the front surface 7 so as to overlap the front surface 7 of the seat back SB in the retracted state, that is, the substantially horizontal and flat upper portion 10 that contacts the top portion 6 of the seat back SB in the retracted state. And a flat front side hanging part 11 extending obliquely downward from the upper part 10 with substantially the same inclination.
このような断面略逆Ｌ字状のヘッドレストＨＲでは、格納状態で、略水平なシートバックＳＢの頂部６に偏平な上部１０が密着する。これによって、ヘッドレストＨＲの格納状態でシートバックＳＢの頂部６から上部１０が突出する量を少なくできるので、運転者の後方視界の邪魔になり難く、しかも、シートバックＳＢの前倒状態において、シートクッションの先端からヘッドレストＨＲの上部１０が大きく飛び出さないようにでき、ヘッドレストＨＲが邪魔になり難い。 In such a headrest HR having a substantially inverted L-shaped cross section, the flat upper portion 10 is in close contact with the top portion 6 of the substantially horizontal seat back SB in the retracted state. As a result, the amount by which the upper portion 10 protrudes from the top 6 of the seat back SB in the retracted state of the headrest HR can be reduced. The upper portion 10 of the headrest HR can be prevented from jumping out from the tip of the cushion, and the headrest HR is unlikely to get in the way.
また、断面略逆Ｌ字状のヘッドレストＨＲでは、傾斜したシートバックＳＢの前面７に偏平な前側垂下部１１が密着する。これにより、ヘッドレストＨＲの格納状態にあっては、シートバックＳＢの前面７から前側垂下部１１が突出する量を少なくできるので、シートバックＳＢの前倒状態において、シートバックＳＢを略フラットな状態にし易い。 Further, in the headrest HR having a substantially inverted L-shaped cross section, the flat front hanging portion 11 is in close contact with the front surface 7 of the inclined seat back SB. Thereby, in the retracted state of the headrest HR, the amount by which the front hanging portion 11 protrudes from the front surface 7 of the seat back SB can be reduced, so that the seat back SB is in a substantially flat state in the forward-turned state of the seat back SB. Easy to do.
さらに、前側垂下部１１には、後方視認可能で且つ上下で並設された略同一形状の開口部１２が２個設けられている。そして、各開口部１２は、横長形状をなし、上下で対向する直線的で且つ平行なフラット面１２a,１２aと、左右対称な湾曲面１２b,１２bとからなる。このように、開口部１２が横長で且つ上下で並設されることで、運転者の後方視界の確保がより良好なものになる。なお、上方の開口部１２と下方の開口部１２との間の変形を防止するために、この部分に、ヘッドレストフレーム４の横ビーム４ａが配置されている。 Further, the front drooping portion 11 is provided with two openings 12 having substantially the same shape that are visible in the rear and are arranged side by side. Each opening 12 has a horizontally long shape, and includes linear and parallel flat surfaces 12a and 12a opposed to each other in the vertical direction, and symmetrical curved surfaces 12b and 12b. As described above, the opening 12 is horizontally long and vertically arranged, so that the driver's rear view can be better secured. In order to prevent deformation between the upper opening 12 and the lower opening 12, the transverse beam 4a of the headrest frame 4 is disposed in this portion.
そして、図３に示すように、この開口部１２の壁部は、トリムカバー２の一部をなす開口形成部１２Ａによって形成され、この開口形成部１２Ａは、トリムカバー２の前部２ａの一部として無端帯状に形成された第１の開口形成半部２１と、トリムカバー２の後部２ｂの一部として無端帯状に形成された第２の開口形成半部２２とで２分割されている。 As shown in FIG. 3, the wall portion of the opening 12 is formed by an opening forming portion 12 </ b> A that forms a part of the trim cover 2, and the opening forming portion 12 </ b> A is a part of the front portion 2 a of the trim cover 2. The first opening forming half 21 formed as an endless band as a part and the second opening forming half 22 formed as an endless band as a part of the rear part 2b of the trim cover 2 are divided into two.
そして、二点鎖線で示されるように、外側に露出している第１の開口形成半部２１及び第２の開口形成半部２２を内側に折り返すようにして、第１の開口形成半部２１と第２の開口形成半部２２とは、開口部１２内で重ね合わされている。 Then, as shown by a two-dot chain line, the first opening forming half 21 and the second opening forming half 22 exposed to the outside are folded back to the inside. And the second opening forming half 22 are overlapped in the opening 12.
なお、第１の開口形成半部２１の端部は、開口部１２内に露出するので、折り返して縫合され、第２の開口形成半部２２の端部は、開口部１２内に露出しないので、折り返されていない。 Since the end of the first opening forming half 21 is exposed in the opening 12, it is folded and stitched, and the end of the second opening forming half 22 is not exposed in the opening 12. , Not wrapped.
図３及び図５に示すように、第１及び第２の開口形成半部２１,２２のうちで開口部１２の湾曲面１２b,１２bを作り出す湾曲部２１ａ,２２ａには、湾曲(半円)形状の保形板２３,２４が縫着し、第１の開口形成半部２１と第２の開口形成半部２２と保形板２３,２４とを重ね合わせて開口部１２の壁部(開口形成部)１２Ａが形成する。 As shown in FIGS. 3 and 5, the curved portions 21 a and 22 a that create the curved surfaces 12 b and 12 b of the opening 12 among the first and second opening forming halves 21 and 22 are curved (semicircle). The shape-retaining plates 23, 24 are sewn, and the first opening forming half 21, the second opening forming half 22, and the shape-retaining plates 23, 24 are overlapped to form the wall portion of the opening 12 (opening forming portion) 12A is formed.
そして、湾曲部２１ａ,２２ａにおいて、第１の開口形成半部２１の端部は、開口部１２内に露出するので、保形板２３を包み込むように折り返して縫合され、第２の開口形成半部２２の端部は、開口部１２内に露出しないので、折り返されることなく保形板２４が縫着されている。ここで利用される保形板２３,２４は、ポリプロピレンなどの熱変形し難い材質が好ましい。 In the curved portions 21a and 22a, the end portion of the first opening forming half portion 21 is exposed in the opening portion 12, so that it is folded and stitched so as to wrap the shape-retaining plate 23, and the second opening forming half portion is formed. Since the end of the portion 22 is not exposed in the opening 12, the shape retaining plate 24 is sewn without being folded back. The shape-retaining plates 23 and 24 used here are preferably made of a material that hardly undergoes thermal deformation such as polypropylene.
これに対して、図４及び図５に示すように、第１及び第２の開口形成半部２１,２２のうちで開口部１２のフラット面１２a,１２aを作り出す直線部２１ｂ,２２ｂには、直線形状の保形板が縫着されておらず、第１の開口形成半部２１と第２の開口形成半部２２とを重ね合わせて開口部１２の壁部(開口形成部)１２Ａが形成する。 On the other hand, as shown in FIG. 4 and FIG. 5, in the first and second opening forming halves 21 and 22, the straight portions 21 b and 22 b that create the flat surfaces 12 a and 12 a of the opening 12 are The straight shape retaining plate is not sewn , and the first opening forming half 21 and the second opening forming half 22 are overlapped to form a wall portion (opening forming portion) 12A of the opening 12. you.
そして、直線部２１ｂ,２２ｂにおいて、第１の開口形成半部２１の端部は、開口部１２内に露出するので、単に折り返して縫合され、第２の開口形成半部２２の端部は、開口部１２内に露出しないので、折り返されていない。 In the straight portions 21b and 22b, the end of the first opening forming half 21 is exposed in the opening 12, so it is simply folded back and stitched, and the end of the second opening forming half 22 is Since it is not exposed in the opening 12, it is not folded back.
第１の開口形成半部２０と第２の開口形成半部２１とを、開口部１２内で重ね合わせた状態で、図６に示すような中子３０を開口部１２内に押し込んで、保形板２３,２４を矢印方向に押圧する。この状態で、金型内に装填し、発泡液注入口２９(図２参照)から発泡液を注入して、ヘッドレストＨＲを一体発泡成形する。このとき、発泡液の熱により、湾曲部２１ａ,２２ａにおいて、第１の開口形成半部２１と第２の開口形成半部２２と保形板２３,２４とが熱融着されて固着され、直線部２１ｂ,２２ｂにおいて、第１の開口形成半部２１と第２の開口形成半部２２とが熱融着されて固着される。 With the first opening forming half 20 and the second opening forming half 21 being overlapped in the opening 12, a core 30 as shown in FIG. The shape plates 23 and 24 are pressed in the direction of the arrow. In this state, it is loaded into the mold, and the foaming liquid is injected from the foaming liquid injection port 29 (see FIG. 2) to integrally foam the headrest HR. At this time, due to the heat of the foaming liquid, the first opening forming half 21, the second opening forming half 22, and the shape retaining plates 23, 24 are thermally fused and fixed in the curved portions 21a, 22a. In the straight portions 21b and 22b, the first opening forming half 21 and the second opening forming half 22 are thermally fused and fixed.
このようなヘッドレストＨＲにおいては、第１の開口形成半部２１と第２の開口形成半部２２とが重ね合わされているので、第１の開口形成半部２１の端部と第２の開口形成半部２２の端部との間に隙間が発生することがなく、開口部１２の外観品質を向上させることができる。 In such a headrest HR, since the first opening forming half 21 and the second opening forming half 22 are overlapped, the end of the first opening forming half 21 and the second opening forming are formed. A gap is not generated between the end portion of the half portion 22 and the appearance quality of the opening portion 12 can be improved.
しかしながら、第１の開口形成半部２１と第２の開口形成半部２２とを単に重ね合わせて一体発泡成形しただけでは、開口部１２の壁部の湾曲部分に皺が寄り易い。そこで、第１の開口形成半部２１の湾曲部２１ａと第２の開口形成半部２２の湾曲部２２ａとのいずれにも湾曲形状の保形板２３,２４を縫着しておき、開口部１２の壁部の湾曲部分を予め所望の湾曲形状にしておくことで、一体発泡成形時に開口部１２の壁部の湾曲部分に皺が寄り難く、これによって、開口部１２の外観品質を更に向上させることができる。 However, if the first opening forming half 21 and the second opening forming half 22 are simply overlapped and integrally foamed, wrinkles are likely to come close to the curved portion of the wall portion of the opening 12. Therefore, curved shape-retaining plates 23 and 24 are sewn to both the curved portion 21a of the first opening forming half 21 and the curved portion 22a of the second opening forming half 22, and the opening By making the curved portion of the wall portion of 12 a desired curved shape in advance, the curved portion of the wall portion of the opening portion 12 is less likely to wrinkle during integral foam molding, thereby further improving the appearance quality of the opening portion 12. Can be made.
しかも、第１の開口形成半部２１の端部と第２の開口形成半部２２の端部との隙間のバラツキを気にすることなく型入れ作業を行うことができるので、作業性をも向上させることができる。 In addition, the mold insertion operation can be performed without worrying about the gap in the gap between the end of the first opening forming half 21 and the end of the second opening forming half 22. Can be improved.
また、保形板２３,２４を薄くした場合、発泡圧によって保形板２３,２４が変形する虞があるので、中子３０によってその変形を効果的に抑制することができる。 Further, when the shape retaining plates 23 and 24 are thinned, the shape retaining plates 23 and 24 may be deformed by the foaming pressure, and therefore the deformation can be effectively suppressed by the core 30.
本発明は、前述した実施形態に限定されないことは言うまでもない。例えば、保形板は、第１及び第２の開口形成半部２１,２２のうちの少なくともいずれか一方に縫着されていればよい。 It goes without saying that the present invention is not limited to the embodiment described above. For example, the shape-retaining plate may be sewn to at least one of the first and second opening forming halves 21 and 22.
また、前述した開口部１２は、単数又は複数のいずれでも良く、その形状は、楕円、丸など曲線を含む形状であればよい。 Moreover, the opening part 12 mentioned above may be one or more, and the shape should just be a shape containing curves, such as an ellipse and a circle.
また、表皮とワディングとワディングの裏面に接着した非通気性フィルム(ポリウレタンフィルム、ポリエチレンフィルムなど)とからなる３層タイプのトリムカバーの適用も可能である。 Further, a three-layer type trim cover made of a non-breathable film (polyurethane film, polyethylene film, etc.) bonded to the skin, the wadding, and the back surface of the wadding is also applicable.
ＨＲ…ヘッドレスト、２…トリムカバー、２ａ…トリムカバーの前部、２ｂ…トリムカバーの後部、１２…開口部、１２Ａ…開口形成部、２１…第１の開口形成半部、２１ａ,２２ａ…湾曲部、２２…第２の開口形成半部、２３,２４…保形板、３０…中子。
HR ... Headrest, 2 ... Trim cover, 2a ... Front part of trim cover, 2b ... Rear part of trim cover, 12 ... Opening part, 12A ... Opening forming part, 21 ... First opening forming half part, 21a, 22a ... Curved Part, 22 ... second opening forming half, 23, 24 ... shape retaining plate, 30 ... core.
Claims (1)
前記開口部の壁部をなす前記トリムカバーの開口形成部は、前記トリムカバーの前部の一部として帯状に形成された第１の開口形成半部と、前記トリムカバーの後部の一部として帯状に形成された第２の開口形成半部とで２分割し、
前記左右対称な湾曲面を形成する第１の開口形成半部の湾曲部と前記湾曲面を形成する前記第２の開口形成半部の湾曲部には、湾曲形状の保形板を縫着し、前記第１の開口形成半部と前記第２の開口形成半部と前記保形板とを重ね合わせ、
前記トリムカバーの前部と後部の前記第１の開口形成半部と前記第２の開口形成半部の直線部を重ね合わせて、前記開口部の前記壁部を形成した後、
開口部内に中子を装填して、中子で前記左右の保形板を押圧して、前記トリムカバー内に前記発泡液を注入して一体発泡成形することを特徴とするヘッドレストの製造方法。 In a method for manufacturing a headrest that is visible through the back and is integrally foamed by injecting a foaming liquid into a bag-like trim cover provided with an opening having a flat surface that is vertically symmetrical and a curved surface that is symmetrical to the left and right,
The opening forming portion of the trim cover that forms the wall portion of the opening includes a first opening forming half formed in a band shape as a part of the front portion of the trim cover, and a part of the rear portion of the trim cover. Dividing into two parts with the second opening forming half part formed in a band shape,
A curved shape- retaining plate is sewn on the curved portion of the first opening forming half that forms the symmetrical curved surface and the curved portion of the second opening forming half that forms the curved surface. , The first opening forming half, the second opening forming half and the shape retaining plate are overlapped,
After overlapping the straight portions of the first opening forming half and the second opening forming half of the front and rear of the trim cover to form the wall portion of the opening,
A method for manufacturing a headrest, comprising: inserting a core into an opening, pressing the left and right shape-retaining plates with the core, injecting the foaming liquid into the trim cover, and performing integral foam molding.
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| US9511696B2 (en) | 2015-05-06 | 2016-12-06 | Daimay North America Automotive, Inc. | Rotatable headrest assembly |
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| US9511696B2 (en) | 2015-05-06 | 2016-12-06 | Daimay North America Automotive, Inc. | Rotatable headrest assembly |
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