JP6205593B2 - Headrest structure - Google Patents
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- JP6205593B2 JP6205593B2 JP2013069125A JP2013069125A JP6205593B2 JP 6205593 B2 JP6205593 B2 JP 6205593B2 JP 2013069125 A JP2013069125 A JP 2013069125A JP 2013069125 A JP2013069125 A JP 2013069125A JP 6205593 B2 JP6205593 B2 JP 6205593B2
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- 239000000463 material Substances 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 2
- 238000002347 injection Methods 0.000 description 10
- 239000007924 injection Substances 0.000 description 10
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000006261 foam material Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000005452 bending Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Description
本発明は、車両用シートのヘッドレスト構造に関し、特にヘッドレスト用のフレームと乗員後頭部への衝撃を低減するエネルギー吸収部材と容易に組み付けることができ、製造及び輸送コストをも低減し得るヘッドレスト構造に関する。 The present invention relates to a headrest structure for a vehicle seat, and more particularly to a headrest structure that can be easily assembled with a frame for a headrest and an energy absorbing member that reduces an impact on an occupant's rear head, and can reduce manufacturing and transportation costs.
一般に車両の座席シートのヘッドレストは、概ね鉄パイプ等で形成されたフレームと、ウレタン等の発泡材で成形されたパッドと、布製等の表皮のヘッドレスト用のカバーと、で構成されている。このヘッドレストは、フレームをカバーの中に挿入した後に、これらを型に入れた状態でウレタン等をカバー内に充填することで製造している。 2. Description of the Related Art Generally, a headrest of a vehicle seat is composed of a frame generally formed of an iron pipe or the like, a pad formed of a foam material such as urethane, and a cover for a headrest made of cloth or the like. This headrest is manufactured by filling the cover with urethane or the like in a state where the frame is inserted into the cover and then put in a mold.
また、一般にヘッドレストの中には車両の衝突時の乗員頭部への障害値を低減させるためのエネルギー吸収部材を備えている。例えば、特許文献１では衝突時に変形してエネルギーを吸収し、乗員頭部への障害値を低減させるためにヘッドレストのフレーム間に乗員頭部側に膨出した板金製の変形部材（エネルギー吸収部材）を備えたヘッドレスト構造が開示されている。 In general, the headrest is provided with an energy absorbing member for reducing an obstacle value to a passenger's head at the time of a vehicle collision. For example, in Patent Document 1, a deformed member (energy absorbing member) that is deformed at the time of a collision and absorbs energy to bulge toward the occupant head between the headrest frames in order to reduce the obstacle value to the occupant head. ) Is disclosed.
しかしながら、特許文献１のヘッドレスト構造の場合、予めフレームにエネルギー吸収部材が堅く溶接固定されており、一体とした大きな構造体になるためヘッドレスト用カバーに挿入する際にこれ専用の大きな開口が必要となり、開口を塞ぐためにカバーにファスナ等が必要となる。従って、チャック取り付けに余分な製造コストが必要である。また外観上も好ましくない。また、特許文献１のヘッドレスト構造の場合、フレーム及びエネルギー吸収部材が一体であるため荷姿が嵩張り、輸送費や保管費が余分に必要となるという問題もあった。 However, in the case of the headrest structure of Patent Document 1, the energy absorbing member is firmly fixed to the frame in advance by welding, so that a large integrated structure is required, so a large opening dedicated to this is required when inserting the headrest cover. In order to close the opening, a fastener or the like is required for the cover. Therefore, extra manufacturing costs are required for attaching the chuck. Moreover, it is not preferable in appearance. In addition, in the case of the headrest structure of Patent Document 1, since the frame and the energy absorbing member are integrated, there is a problem in that the packing form is bulky and extra transportation and storage costs are required.
上記問題に鑑みて本発明は創作されたものであり、本発明はヘッドレスト用フレームと乗員後頭部への衝撃を低減するエネルギー吸収部材と容易に組み付けることができ、ヘッドレストカバーにも開口又はこれを塞ぐ手段を要さず、さらには製造又は輸送コストも低減し得るヘッドレスト構造を提供すること目的とする。 The present invention has been created in view of the above problems, and the present invention can be easily assembled with a headrest frame and an energy absorbing member that reduces impact on the occupant's back of the head, and the headrest cover is also opened or closed. It is an object of the present invention to provide a headrest structure that requires no means and that can also reduce manufacturing or transportation costs.
上述した課題を解決すべく提供される本発明は、左右ピラー部と左右ピラー部の上端を連結する上部ピラー部とで一体形成されたフレームを備え、前記フレームをカバーに挿入した後にパッド材を充填して成型するヘッドレスト構造を提供する。 The present invention provided to solve the above-described problem includes a frame integrally formed by a left and right pillar portion and an upper pillar portion connecting the upper ends of the left and right pillar portions, and the pad material is inserted after the frame is inserted into the cover. A headrest structure for filling and molding is provided.
また、本ヘッドレスト構造は、フレームに対して車両前方に膨出し、前記パッドを介して乗員の後頭部を支持し、乗員後頭部からの所定加重以上の入力で変形するエネルギー吸収部材と、を有しており、該エネルギー吸収部材は、前記フレームの左右ピラー部と前記上部ピラー部とに車両前方側から着脱可能な係止部を備え、
前記エネルギー吸収部材は切り込みを有し、該切り込みは折り曲げ箇所であり、エネルギー吸収部材は、略一直線状から折り曲げられてヘッドレスト構造に組み付けられることを特徴とする。
The headrest structure further includes an energy absorbing member that bulges forward of the vehicle with respect to the frame, supports the occupant's rear head via the pad, and deforms with an input greater than a predetermined load from the occupant's rear head. The energy absorbing member includes a locking portion that can be attached to and detached from the front side of the vehicle on the left and right pillar portions and the upper pillar portion of the frame ,
The energy absorbing member has a notch, the notch is a bent portion, and the energy absorbing member is bent from a substantially straight line and assembled to the headrest structure.
本発明のヘッドレスト構造は、従来一体であったフレームとエネルギー吸収部材とを別々にカバーに挿入した後に、両者をカバー内で組み付けることができる。従って、カバーの開口を大きくする必要がなく、ヘッドレスト完成後に開口を塞ぐためのチャック等も不要でありコストも抑制できる。また、外観も良好である。また、好ましくはウレタン等のパッド材をカバー内に充填する注入口をエネルギー吸収部材の挿入用の入口として活用すれば、余分な開口を設けることもなく、パッドを充填して成型する際に注入口でカバー端部を巻き込んでカバーを封止することもできる。 The headrest structure of the present invention can be assembled in the cover after the frame and the energy absorbing member, which are conventionally integrated, are separately inserted into the cover. Therefore, it is not necessary to increase the opening of the cover, and a chuck or the like for closing the opening after completion of the headrest is unnecessary, and the cost can be suppressed. Also, the appearance is good. In addition, if an inlet for filling a pad material such as urethane is preferably used as an inlet for insertion of the energy absorbing member, an extra opening is not provided, and the pad is filled and molded. It is also possible to enclose the cover end at the entrance and seal the cover.
また、エネルギー吸収部材はカバー内で脱着可能であるため、車種によってエネルギー吸収部材の座屈荷重をチューニングできるため、フレームの共通化が可能であり、多種の車両全体としてヘッドレストの製造に要するコストを低減可能である。 In addition, since the energy absorbing member is detachable in the cover, the buckling load of the energy absorbing member can be tuned depending on the vehicle type, so that the frame can be used in common, and the cost required for manufacturing the headrest for various vehicles as a whole is reduced. It can be reduced.
さらに、本ヘッドレスト構造によれば、フレームとエネルギー吸収部材とが別々に現地まで搬送され納入されるため、予め両者を一体に結合させていた従来に比べて荷姿が嵩張らず、輸送費低減や工場内のラインサイドでの省スペース化を図ることができ、製造工程全体としてのコストを低減し得る。 Further, according to the present headrest structure, the frame and the energy absorbing member are separately transported and delivered to the site, so that the package is not bulky compared to the conventional case in which the two are joined together in advance, and the transportation cost is reduced. Space can be saved on the line side in the factory, and the cost of the entire manufacturing process can be reduced.
本発明のヘッドレスト構造によれば、ヘッドレスト用フレームと頭部への衝撃を低減するエネルギー吸収部材と容易に組み付けることができ、ヘッドレストカバーにも開口又はこれを塞ぐ手段を要さず、さらには製造又は輸送コストも低減し得る。 According to the headrest structure of the present invention, the headrest frame and the energy absorbing member that reduces the impact on the head can be easily assembled, and the headrest cover does not require an opening or a means for closing the headrest cover, and further manufactured. Or transportation costs can also be reduced.
図１〜図３は本ヘッドレスト構造を構成する各部品の略斜視図を示しており、図１には本ヘッドレスト構造のフレーム、図２には本ヘッドレスト構造のエネルギー吸収部材、図３は本ヘッドレスト構造のパッドを充填した状態のカバーを示している。また、図４は図１〜図３の各部品を組み付けた本ヘッドレスト構造の略側断面図である。さらに、図５は図２のエネルギー吸収部材を図２の略上面視である。 1 to 3 are schematic perspective views of components constituting the headrest structure. FIG. 1 shows a frame of the headrest structure, FIG. 2 shows an energy absorbing member of the headrest structure, and FIG. 3 shows the headrest structure. The cover is shown filled with a structure pad. FIG. 4 is a schematic sectional side view of the headrest structure in which the components shown in FIGS. 1 to 3 are assembled. 5 is a schematic top view of the energy absorbing member of FIG.
図１に示すように本ヘッドレスト構造１のフレーム２であり、鉄やステンレスなどで形成された中空管状部材である。フレーム２はヘッドレスト構造１において乗員後頭部を支持して下方の座席シート（図示せず）に連結する部材であり（紙面上方がヘッドレスト構造１の上方になる）、上下方向に延びて下端で座席シートへの連結の役割を発揮する。実際には、一本の管状部材を曲げて成形している。 As shown in FIG. 1, the frame 2 of the headrest structure 1 is a hollow tubular member formed of iron, stainless steel or the like. The frame 2 is a member that supports the passenger's rear head in the headrest structure 1 and is connected to a lower seat (not shown) (the upper surface of the paper is above the headrest structure 1). Demonstrate the role of connection to Actually, one tubular member is bent and formed.
次に図２、図５にはエネルギー吸収部材３が示されている。エネルギー吸収部材３は通常、樹脂等の可撓性を有する材質で射出成形される。図５の上面視からもわかるようにエネルギー吸収部材３は、その車両前方側（紙面上側）に膨出し、車両後方側が開いて形成され、製造及び搬入当時は矢印Ｘ方向に拡がった状態で前面３ａと略一直線状になっている（この状態は図示せず）。したがって、製造及び搬送コストを低減できる。これを上述したフレーム２に組み付けるためにエネルギー吸収部材３は矢印Ｙに示す方向に折り曲げられる。この折り曲げは折り曲げ側（車両後方側）の折り曲げ箇所に切り込み３ｆが設けられることで補助される（組み付け等については後述）。また、折り曲げ位置である切り込み３ｆの近傍には上下方向い延びるリブ３ｄ、３ｅが設けられる。後述するようにエネルギー吸収部材３の前面３ａは、乗員後頭部からの荷重に対する耐久性を得るためのものである。 Next, FIGS. 2 and 5 show the energy absorbing member 3. The energy absorbing member 3 is usually injection-molded with a flexible material such as resin. As can be seen from the top view of FIG. 5, the energy absorbing member 3 bulges to the front side of the vehicle (upper side of the paper) and is formed to open the rear side of the vehicle. It is substantially in line with 3a (this state is not shown). Therefore, manufacturing and transportation costs can be reduced. In order to assemble this to the frame 2 described above, the energy absorbing member 3 is bent in the direction indicated by the arrow Y. This bending is assisted by providing a notch 3f at the bending side (vehicle rear side) of the bending (the assembly and the like will be described later). Further, ribs 3d and 3e extending in the vertical direction are provided in the vicinity of the notch 3f which is the bending position. As will be described later, the front surface 3a of the energy absorbing member 3 is for obtaining durability against a load from the occupant's rear head.
また、エネルギー吸収部材３は、その上部とに左右端には管状のフレーム３をそれぞれ把持・係止する上係止部３ｂ、左右係止部３ｃを有している。具体的には、係止部３ｂ、３ｃはフレーム２側（車両後方側）に開口を有する略Ｃ形状であり、その内径は概ねフレーム２の外径に近似する。上係止部３ｂの開口を上ピラー部２ｃ、左右係止部３ｃの開口を左右ピラー部２ａ、２ｂにスナップ留めすることでエネルギー吸収部材３をフレーム２に組み付ける。この組み付けはカバー５内で行うがこの点については後述する。 The energy absorbing member 3 has an upper locking portion 3b and a left and right locking portion 3c for holding and locking the tubular frame 3 at the left and right ends of the energy absorbing member 3, respectively. Specifically, the locking portions 3 b and 3 c have a substantially C shape having an opening on the frame 2 side (vehicle rear side), and the inner diameter thereof is approximately similar to the outer diameter of the frame 2. The energy absorbing member 3 is assembled to the frame 2 by snapping the opening of the upper locking portion 3b to the upper pillar portion 2c and the opening of the left and right locking portion 3c to the left and right pillar portions 2a and 2b. This assembly is performed in the cover 5, which will be described later.
なお、係止部３ｂ、３ｃは図６（ａ）の係止部３’ｂ、３’ｃにも示すように、その端縁が外側に曲げられたガイド片３ｈを備えることもできる。これはエネルギー吸収部材３をフレーム２に嵌め込み易くする構成であり、後述するようにカバー５内でフレーム２に嵌め込むときに有利である。 The locking portions 3b and 3c can also be provided with guide pieces 3h whose end edges are bent outward as shown in the locking portions 3'b and 3'c in FIG. This is a configuration that makes it easy to fit the energy absorbing member 3 into the frame 2, and is advantageous when fitting into the frame 2 in the cover 5 as will be described later.
図３は、成形された状態のカバー５を示している。本ヘッドレスト構造１の場合、まずカバー５内にフレーム２とエネルギー吸収部材３とを別々に挿入する。まず、カバー５にはウレタン等のパッドを射出充填させるための注入口５ａが設けられている。この注入口３ａは、カバー５内に均一に液状のパッド材料を注入して発泡させるため、ある程度幅方向に長いスリット形状である。この注入口３ａから図２のフレーム２を挿入する。挿入した後、フレーム２の左右ピラー部２ａ、２ｂの端部は孔５ａ、５ｂから突出する。カバー５内にフレーム２を挿入した状態のイメージを点線２で示している。 FIG. 3 shows the cover 5 in a molded state. In the case of the headrest structure 1, first, the frame 2 and the energy absorbing member 3 are separately inserted into the cover 5. First, the cover 5 is provided with an inlet 5a for injecting and filling a pad of urethane or the like. The inlet 3a has a slit shape that is long in the width direction to some extent in order to inject and foam a liquid pad material uniformly into the cover 5. The frame 2 of FIG. 2 is inserted from the inlet 3a. After the insertion, the ends of the left and right pillar portions 2a and 2b of the frame 2 protrude from the holes 5a and 5b. An image with the frame 2 inserted into the cover 5 is indicated by a dotted line 2.
また、図３では図示しないが、エネルギー吸収部材３もカバー５の注入口５ａから挿入する（図２の矢印Ｂ参照）。この際、注入口３ａから挿入し易いようにエネルギー吸収部材３は矢印Ｘ方向に（図５）延びた略板状体として注入口３ａからカバー５内に挿入される。この状態でカバー５内でエネルギー吸収部材３をフレーム２に組み付ける(組み付け方法は上述)。そして、射出ノズル（図示せず）を注入口３ａに挿入して、そこからウレタン等の発泡材を注入・充填してカバー５内にパッドを成形する。 Although not shown in FIG. 3, the energy absorbing member 3 is also inserted from the inlet 5a of the cover 5 (see arrow B in FIG. 2). At this time, the energy absorbing member 3 is inserted into the cover 5 from the injection port 3a as a substantially plate-like body extending in the arrow X direction (FIG. 5) so that it can be easily inserted from the injection port 3a. In this state, the energy absorbing member 3 is assembled to the frame 2 in the cover 5 (the assembling method is described above). Then, an injection nozzle (not shown) is inserted into the injection port 3 a, and a foam material such as urethane is injected and filled therein to form a pad in the cover 5.
パッド４を成形するにはカバー５内でフレーム２とエネルギー吸収部材３とが組み付けられた状態で、カバー５ごと型（図示せず）に入れる。型は所望のパッド形状を有しており、カバー５の孔５ｂから外部に突出したフレーム２の脚部２ｂを担持しながらカバー５を型内に載置する。そして、ウレタン等の発泡材を注入口５ａから注入・充填することで所望形状・位置関係のヘッドレスト構造１が成形される。 In order to mold the pad 4, the cover 2 and the energy absorbing member 3 are assembled in the cover 5 and put together with the cover 5 into a mold (not shown). The mold has a desired pad shape, and the cover 5 is placed in the mold while supporting the leg portion 2b of the frame 2 protruding outside from the hole 5b of the cover 5. Then, a headrest structure 1 having a desired shape and positional relationship is formed by injecting and filling a foam material such as urethane from the injection port 5a.
所望のパッド４の分量の発泡材をカバー５内に充填させると、それ以上の充填を停止して射出ノズルを注入口５ａから引き抜く。図６（ｂ）は充填が終わった後の図３のラインＣ−Ｃに沿った拡大略断面が示されている。この図からも明確なようにカバー５の注入口５ａの先端縁５ｃは充填されたパッド４により挟圧されて固着している。先端縁５ｃは射出ノズルを注入口５ａに差し込むときにこれに随伴してカバー５内に案内され、発泡材が充填されて固まるにつれて互いに固着していき射出ノズルが抜き出されることとなるからである。図６（ｂ）のように先端縁５ｃがカバー５内で固着されることで、本ヘッドレスト構造レスト構造１は、特に別途のチャック等を設けなくともパッド４等をカバー５内に収納し、カバー５の端部を露出させることを回避し得る。 When the foam material of the desired amount of the pad 4 is filled in the cover 5, the filling is stopped and the injection nozzle is pulled out from the injection port 5a. FIG. 6 (b) shows an enlarged schematic cross-section along line CC in FIG. 3 after filling. As is clear from this figure, the tip edge 5c of the inlet 5a of the cover 5 is pinched and fixed by the pad 4 filled. The leading edge 5c is guided into the cover 5 when the injection nozzle is inserted into the injection port 5a, and is fixed to each other as the foam material is filled and hardened, so that the injection nozzle is extracted. is there. As shown in FIG. 6B, the leading edge 5c is fixed in the cover 5, so that the headrest structure rest structure 1 accommodates the pad 4 and the like in the cover 5 without providing a separate chuck or the like. It is possible to avoid exposing the end of the cover 5.
図４では、実際にカバー５内にフレーム２とエネルギー吸収部材３とが組み付けられた状態で型の中でパッド４が充填され成形された後の本ヘッドレスト構造の側断面図を示している。このヘッドレスト構造によれば、乗員後頭部からの所定の衝撃荷重が左側から作用しても、まず乗員後頭部はパッド４に衝撃が吸収され、そのままか所定荷重が前方に膨出し可撓性を有するエネルギー吸収部材３が変形することで衝撃を吸収する。 FIG. 4 shows a side sectional view of the headrest structure after the pad 4 is filled and molded in the mold in a state where the frame 2 and the energy absorbing member 3 are actually assembled in the cover 5. According to this headrest structure, even if a predetermined impact load from the occupant's rear head acts from the left side, the occupant's rear head first absorbs the impact by the pad 4, and the predetermined load bulges forward and has flexibility. The shock is absorbed by the deformation of the absorbing member 3.
以上、本発明におけるヘッドレスト構造についての実施形態およびその概念及び周辺技術について説明してきたが本発明はこれに限定されるものではなく特許請求の範囲および明細書等に記載の精神や教示を逸脱しない範囲で他の変形例、改良例が得られることが当業者は理解できるであろう。 The embodiment of the headrest structure, the concept thereof, and the peripheral technology in the present invention have been described above. However, the present invention is not limited to this, and does not depart from the spirit and teaching described in the claims and the description. It will be understood by those skilled in the art that other variations and modifications can be obtained within the scope.
１ ヘッドレスト構造
２ フレーム
２a 左ピラー部
２ｂ 右ピラー部
２ｃ 上部ビラー部"
３ エネルギー吸収部材
３ａ 前面
３ｂ 上係止部
３ｃ 左右係止部
３ｄ、ｅ リブ
３ｆ、ｇ 切り込み
４ パッド
1 Headrest structure 2 Frame 2a Left pillar part 2b Right pillar part 2c Upper biller part "
3 Energy absorbing member 3a Front surface 3b Upper locking part 3c Left and right locking part 3d, e Rib 3f, g Notch 4 Pad
Claims (1)
前記フレームに対して車両前方に膨出し、前記パッドを介して乗員の後頭部を支持し、乗員後頭部からの所定加重以上の入力で変形するエネルギー吸収部材と、を有し、
該エネルギー吸収部材は、前記フレームの左右ピラー部と前記上部ピラー部とに車両前方側から着脱可能な係止部を備え、
前記エネルギー吸収部材は切り込みを有し、該切り込みは折り曲げ箇所であり、
エネルギー吸収部材は、略一直線状から折り曲げられてヘッドレスト構造に組み付けられることを特徴とする、ヘッドレスト構造。 A headrest structure comprising a frame formed integrally with a left and right pillar portion and an upper pillar portion connecting the upper ends of the left and right pillar portions, and filling and molding a pad material after inserting the frame into a cover,
An energy absorbing member that bulges forward of the vehicle with respect to the frame, supports the occupant's back of the head via the pad, and deforms with an input greater than or equal to a predetermined load from the occupant's back of the head,
The energy absorbing member includes a locking portion that can be attached to and detached from the front side of the vehicle on the left and right pillar portions and the upper pillar portion of the frame ,
The energy absorbing member has a notch, the notch is a bent portion,
Energy absorbing member, characterized in that it is assembled to the headrest structure bent from a substantially straight line, the headrest structure.
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