JP3124236B2 - Retractable headrest - Google Patents
Retractable headrestInfo
- Publication number
- JP3124236B2 JP3124236B2 JP08257608A JP25760896A JP3124236B2 JP 3124236 B2 JP3124236 B2 JP 3124236B2 JP 08257608 A JP08257608 A JP 08257608A JP 25760896 A JP25760896 A JP 25760896A JP 3124236 B2 JP3124236 B2 JP 3124236B2
- Authority
- JP
- Japan
- Prior art keywords
- stay
- foam
- skin
- pillow
- tubular
- 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.)
- Expired - Fee Related
Links
- 239000006260 foam Substances 0.000 claims description 68
- 238000005187 foaming Methods 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 15
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 238000010097 foam moulding Methods 0.000 claims description 2
- -1 polyethylene Polymers 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 210000003491 skin Anatomy 0.000 description 53
- 238000000465 moulding Methods 0.000 description 8
- 230000035515 penetration Effects 0.000 description 7
- 239000002994 raw material Substances 0.000 description 6
- 239000004744 fabric Substances 0.000 description 4
- 241001422033 Thestylus Species 0.000 description 3
- 230000001771 impaired effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000037303 wrinkles Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 210000002615 epidermis Anatomy 0.000 description 2
- 239000008258 liquid foam Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 239000002648 laminated material Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 102200097286 rs199472825 Human genes 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000036555 skin type Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/70—Upholstery springs ; Upholstery
- B60N2/7017—Upholstery springs ; Upholstery characterised by the manufacturing process; manufacturing upholstery or upholstery springs not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/80—Head-rests
- B60N2/806—Head-rests movable or adjustable
- B60N2/838—Tiltable
- B60N2/841—Tiltable characterised by their locking devices
- B60N2/85—Tiltable characterised by their locking devices with continuous positioning
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Seats For Vehicles (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Molding Of Porous Articles (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、枕部の傾斜角度
を調節できる可倒式ヘッドレストに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retractable headrest capable of adjusting a tilt angle of a pillow.
【０００２】[0002]
【従来の技術】自動車のヘッドレストは、袋状の表皮内
に発泡体の形成された枕部と、その枕部内に一端側が埋
設され、他端側が枕部の底部から突出するスティとで構
成される。前記ヘッドレストとして、枕部を前後に回動
させて枕部の傾斜角度を調節できる可倒式ヘッドレスト
がある。その可倒式ヘッドレストにあっては、前記枕部
内のスティの一端に可倒装置が取付けられていて、その
可倒装置により枕部の傾斜角度を変えられるようになっ
ている。なお、前記スティに可倒装置が取り付けられた
ものは、インサ−トとも称される。2. Description of the Related Art A headrest of a motor vehicle is composed of a pillow having a foam formed in a bag-like outer skin, and a stay embedded in the pillow at one end and projecting from the bottom of the pillow at the other end. You. As the headrest, there is a retractable headrest that can adjust the inclination angle of the pillow by rotating the pillow back and forth. In the foldable headrest, a foldable device is attached to one end of the stay in the pillow so that the tilting angle of the pillow can be changed by the foldable device. The one in which the tilting device is attached to the stay is also called an insert.
【０００３】前記可倒式ヘッドレストとしては、袋状の
表皮底部からスティの一端側を可倒装置とともに表皮内
に挿入し、次いでその表皮内に液状発泡原料を注入し
て、発泡体を形成したもの、いわゆる表皮一体可倒式ヘ
ッドレストがある。この表皮一体可倒式ヘッドレスト
は、表皮と発泡体がその発泡体形成時の液状発泡原料の
自己接着性で接着一体化しているため、後から表皮を被
せる必要がなく成形作業が簡略となる利点がある。[0003] As the above-mentioned folding headrest, a foam is formed by inserting one end of a stay from the bottom of a bag-shaped skin together with a folding device into the skin, and then injecting a liquid foaming material into the skin. There is a thing, a so-called epidermis integrated headrest. This headrest with integrated skin is advantageous in that the skin and the foam are bonded and integrated by the self-adhesive property of the liquid foaming raw material at the time of forming the foam, so that there is no need to cover the skin later and the molding operation is simplified. There is.
【０００４】しかし、前記可倒装置としてラチェットを
用いた従来の表皮一体可倒式ヘッドレストは、前記発泡
体形成時に液状発泡原料が可倒装置内に侵入すると、可
倒装置が正常に作動しなくなるおそれがあった。そこで
ラチェット式の可倒装置を樹脂性のカバ−体であらかじ
め覆い、可倒装置に発泡体が侵入しないようにしてい
た。そして、そのカバ−体の底部にはスティの回りに孔
が開けられ、前記可倒装置により枕部がスティに対して
前後回動する際に、スティがカバ−体の底部と衝突しな
いようにされている。また、前記発泡体の形成時には、
前記カバ−体の底部を表皮底部の内側に当接させて、そ
の表皮底部のスティ周囲をシ−ルし、液状発泡原料が表
皮外へ漏出するのを防止していた。ところが、前記可倒
装置にカバ−体を設けると、ヘッドレスト全体が重くな
る問題、カバ−体の成形作業が余分に必要となる問題、
カバ−体の部品代が余分に必要となる問題等があった。[0004] However, in the conventional headrest with an integral skin which uses a ratchet as the tilting device, if the liquid foaming material enters the tilting device when the foam is formed, the tilting device does not operate normally. There was a fear. Therefore, the ratchet-type folding device was previously covered with a resin cover to prevent the foam from entering the folding device. A hole is formed in the bottom of the cover body around the stay, so that the stay does not collide with the bottom of the cover body when the pillow is rotated back and forth with respect to the stay by the folding device. Have been. Further, at the time of forming the foam,
The bottom of the cover body is brought into contact with the inside of the bottom of the skin to seal around the stay at the bottom of the skin to prevent the liquid foaming material from leaking out of the skin. However, if a cover body is provided in the folding device, the entire headrest becomes heavy, and the molding of the cover body requires extra work.
There is a problem that extra parts are required for the cover body.
【０００５】そこで近年、回転軸に２枚の対接する面状
体を設け、一方の面状体にスティを、他方の面状体に枕
部内蔵用芯体を取り付け、前記面状体どうしの相対的な
回転により生じる面状体間の摩擦でもって可倒機構を発
現するようにしたもの（以下「摩擦式可倒装置」とい
う。）が提案されるようになった（実開平１−１０４２
４９号）。[0005] In recent years, two rotating sheet members are provided on the rotating shaft, and a stay is attached to one of the sheet members and a pillow built-in core is attached to the other sheet member. There has been proposed a device in which a folding mechanism is developed by friction between planar bodies caused by relative rotation (hereinafter referred to as a "friction type folding device") (Japanese Utility Model Laid-Open No. 1-1042).
No. 49).
【０００６】前記摩擦式の可倒装置にあっては、前記面
状体表面に発泡体が接着しても、枕部あるいはスティを
強引に回動させることにより、一方の面状体（通常はス
ティの取り付けられた方）と発泡体との間の接着が破壊
されれば、スティと枕部との相対的な回動が可能になる
ため、前記摩擦式可倒装置をカバー体で覆わなくてもよ
い利点がある。In the above-mentioned friction type folding device, even if the foam adheres to the surface of the planar member, the pillow or the stay is forcibly rotated to form one planar member (usually, If the adhesive between the stay and the foam is broken, the relative rotation between the stay and the pillow becomes possible, so that the friction type folding device is not covered with a cover body. There are advantages that may be.
【０００７】しかし、その場合でも、表皮内のスティの
周囲には前記発泡体が充満しており、しかもその発泡体
は衝撃吸収性を考慮して硬さおよび弾性が設計されてい
るため、枕部とスティの相対的な回動時にスティ周囲の
発泡体が変形しずらくなっている。その結果、折角枕部
の角度を調節しても、前記スティ周囲の発泡体の弾性に
よりスティが元の位置に押し戻され、枕部の傾斜角度を
維持しがたい問題がある。However, even in this case, the foam is filled around the stay in the epidermis, and the foam is designed to have a hardness and elasticity in consideration of shock absorption. When the part and the stay are relatively rotated, the foam around the stay becomes difficult to deform. As a result, even if the angle of the bent pillow is adjusted, the elasticity of the foam around the stay pushes the stay back to the original position, and it is difficult to maintain the inclination angle of the pillow.
【０００８】さらに、可倒式装置を覆うカバ−体と表皮
底部内側との当接により行っていた表皮底部のスティ周
囲におけるシ−ルが行えなくなり、液状発泡原料が表皮
底部のスティ周囲から表皮外面に漏出する問題がある。
そして、その漏出原料がスティと表皮底部とに付着して
両者を接着し、スティと枕部の相対的な回動、すなわち
枕部の傾斜角度調節を行えなくするおそれがある。さら
に、枕部の角度調節が完全に損なわれない場合でも、前
記漏出原料によりスティ周囲の表皮外観が損なわれた
り、その漏出原料が硬化したバリの除去作業が必要にな
ったり、さらには原料の無駄を生じる等の問題があっ
た。Further, the sealing around the stay at the bottom of the skin, which had been performed due to the contact between the cover body covering the retractable device and the inside of the bottom of the skin, cannot be performed. There is a problem of leakage to the outside.
Then, the leaked material adheres to the stay and the skin bottom and adheres to each other, and there is a possibility that the relative rotation between the stay and the pillow, that is, the inclination angle of the pillow cannot be adjusted. Furthermore, even when the angle adjustment of the pillow portion is not completely impaired, the appearance of the outer skin around the stay is impaired by the leaked material, or the work of removing the burr where the leaked material is hardened becomes necessary. There were problems such as waste.
【０００９】[0009]
【発明が解決しようとする課題】この発明は、前記の点
に鑑みなされたもので、枕部の外観が良好で、しかも枕
部の傾斜角度調節をスム−ズかつ確実に行え、加えてヘ
ッドレストの成形時に発泡原料の無駄の少ない経済的な
可倒式ヘッドレストを提供しようとするもである。SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has a good appearance of a pillow portion, and can smoothly and reliably adjust an inclination angle of a pillow portion. Another object of the present invention is to provide an economical retractable headrest with less waste of foaming material during molding.
【００１０】[0010]
【課題を解決するための手段】ここで提案する発明は、
袋状の表皮と、可倒装置を有するスティの一端側が前記
可倒装置とともに表皮内に挿入されて当該スティの他端
側が前記表皮底部から突出するインサ−トと、前記表皮
底部の内面と当接するように該表皮底部内面と前記可倒
装置間のスティ外周に装着された筒状発泡体と、前記可
倒装置およびスティの一端側と筒状発泡体を包囲して前
記表皮内で液状発泡原料から発泡形成された枕部用発泡
体とよりなって、前記筒状発泡体が独立気泡を主体とす
るものとされ、前記表皮底部のスティが突出する部分お
よび筒状発泡体の側面には、前記表皮によって覆われた
ヘッドレスト枕部の傾斜角度調節時に、当該枕部に対す
るスティの相対的前後回動を可能にするスリットが、前
記枕部用発泡体の発泡成形後に形成されていることを特
徴とする可倒式ヘッドレストに係る。Means for Solving the Problems The invention proposed here is:
One end of a bag-like skin, one end of a stay having a folding device is inserted into the skin together with the folding device, and the other end of the stay projects from the bottom of the skin, and an inner surface of the bottom of the skin. A tubular foam attached to the inner surface of the skin bottom portion and the outer periphery of the stay between the collapsible devices so as to be in contact with each other, and a liquid foam within the skin surrounding the collapsible device and one end of the stay and the cylindrical foam. A pillow foam formed by foaming from a raw material , wherein the tubular foam mainly comprises closed cells.
When the inclination angle of the headrest pillow portion covered with the skin is adjusted at the portion where the stay at the bottom of the skin projects and the side surface of the tubular foam, the relative rotation of the stay with respect to the pillow portion is adjusted. The slit that allows the front
According to a retractable headrest, characterized by being made form after the foam molding of the serial pillow portion foams.
【００１１】[0011]
【実施例】以下添付の図面に従ってこの発明を詳細に説
明する。図１は、この発明の可倒式ヘッドレストの一例
を示す斜視図、図２はその一部切り欠き斜視図、図３は
その縦断面図、図４はそのスティ部分で切断した横断面
図、図５は同実施例に用いられている可倒装置の斜視
図、図６は同実施例のヘッドレストを製造する際を示す
成形型の中央部の横断面図、図７はその発泡時を示す成
形型の要部拡大断面図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a perspective view showing an example of a retractable headrest of the present invention, FIG. 2 is a partially cutaway perspective view, FIG. 3 is a longitudinal sectional view thereof, FIG. FIG. 5 is a perspective view of the folding device used in the embodiment, FIG. 6 is a cross-sectional view of a center portion of a molding die when manufacturing the headrest of the embodiment, and FIG. It is a principal part expanded sectional view of a molding die.
【００１２】図１ないし図３に示す可倒式ヘッドレスト
１０は、表皮２１、スティ３１、可倒装置４１、独立気
泡を主体とする筒状発泡体５１および枕部用発泡体６１
とからなる、表皮一体式のものである。表皮２１は、枕
部１１の外観を向上させるとともに内部の枕部用発泡体
６１を保護するためのもので、枕部１１の形状に応じた
袋状からなる。この表皮２１としては、ブロ−成形ある
いはスラッシュ成形により袋状に形成されたプラスチッ
ク製のもの、あるいは、縫製等により袋状にされたファ
ブリック製のものなどが、適宜用いられる。なお、ファ
ブリック製の表皮については、ファブリック単体より
も、ファブリックの裏側に軟質発泡体やプラスチックフ
ィルムなどが積層されて非透液性が賦与された積層材か
らなるものが好ましい。The retractable headrest 10 shown in FIGS. 1 to 3 comprises a skin 21, a stay 31, a retractable device 41, a tubular foam 51 mainly composed of closed cells, and a foam 61 for a pillow portion.
It is an integral skin type. The skin 21 is for improving the appearance of the pillow portion 11 and protecting the internal foam 61 for the pillow portion, and has a bag shape corresponding to the shape of the pillow portion 11. As the skin 21, a plastic material formed into a bag shape by blow molding or slash molding, or a fabric material formed into a bag shape by sewing or the like is used as appropriate. It is preferable that the skin made of fabric is made of a laminated material in which a liquid foam is imparted by laminating a soft foam or a plastic film on the back side of the fabric, rather than the fabric alone.
【００１３】前記表皮２１の底部２２にはスティ３１の
突出を可能にするスティ貫通部２３が形成されている。
このスティ貫通部２３には、枕部１１の傾斜角度調節時
に、枕部１１に対するスティ３１の相対的な回動（揺
動）を可能とするためのスリット（切込み）２４が前後
方向に形成されている。このスリット２４は、枕部用発
泡体６１の形成後に筒状発泡体５１の側面とともに表皮
底部２２をカットすることにより形成されたものであ
る。また、そのスティ貫通部２３、２３間には、このヘ
ッドレスト１０の製造時に表皮２１内に可倒装置４１お
よびスティ３１の一端側を挿入するための開閉部２５
が、スリット状に形成されている。A bottom portion 22 of the skin 21 is provided with a stay penetration portion 23 for allowing the stay 31 to protrude.
A slit (cut) 24 is formed in the stay penetration portion 23 in the front-rear direction to allow the stay 31 to relatively rotate (swing) with respect to the pillow portion 11 when adjusting the inclination angle of the pillow portion 11. ing. The slits 24 are formed by cutting the skin bottom 22 together with the side surfaces of the tubular foam 51 after the pillow foam 61 is formed. An opening / closing section 25 for inserting one end of the folding device 41 and one end of the stay 31 into the skin 21 at the time of manufacturing the headrest 10 is provided between the stay penetration sections 23 and 23.
Are formed in a slit shape.
【００１４】スティ３１は、このヘッドレスト１０を、
自動車の座席背もたれに取り付けるためのもので、中実
の金属棒あるいは中空の金属パイプなどからなる。ま
た、この実施例のスティ３１は、水平部３２とその両端
に形成された脚部３３、３３とからなる略コの字形をし
ており、前記水平部３２から脚部３３の途中までが前記
表皮２１内に収納され、その脚部３３の途中から先端
（水平部３２とは反対側の端部）までが表皮底部２２よ
り表皮２１外へ突出している。また脚部３３の表皮２１
外へ突出する部分の側面には、枕部１１の高さ調節用の
係合凹部３４が形成され、背もたれに設けられる係合装
置と段階的に係合するようになっている。なお、前記ス
ティ３１は、この実施例のような略コの字形に限られ
ず、前記脚部３３に相当する２本の棒状体あるいはパイ
プからなるものであってもよい。さらには、その脚部３
３の本数についても、２本に限られるものではない。The stay 31 uses the headrest 10
It is intended to be attached to the seat back of a car, and is made of a solid metal rod or a hollow metal pipe. The stay 31 of this embodiment has a substantially U-shape including a horizontal portion 32 and legs 33, 33 formed at both ends thereof. It is housed in the skin 21, and a portion of the leg 33 from the middle to the tip (the end opposite to the horizontal portion 32) protrudes outside the skin 21 from the skin bottom 22. Also, the skin 21 of the leg 33
An engagement recess 34 for adjusting the height of the pillow portion 11 is formed on the side surface of the portion that protrudes outward, and is adapted to engage with an engagement device provided on the backrest in a stepwise manner. The stay 31 is not limited to a substantially U-shape as in this embodiment, but may be formed of two rods or pipes corresponding to the legs 33. Furthermore, its legs 3
The number of three is not limited to two.
【００１５】可倒装置４１は、前記枕部１１の傾斜角度
を調節可能にするためのもので、前記スティ３１の一
端、この実施例ではスティ３１の水平部３２、に取り付
けられ、そのスティ３１の水平部３２とともに表皮２１
内に挿入されている。The tilting device 41 is for adjusting the inclination angle of the pillow portion 11 and is attached to one end of the stay 31, in this embodiment, the horizontal portion 32 of the stay 31. Skin 21 with horizontal part 32 of
Is inserted inside.
【００１６】この実施例の可倒装置４１は、摩擦式のも
ので、図５に示すように、両端に腕部４３の形成された
略コの字形の金属板などからなる本体部４２と、前記腕
部４３の内側に回動可能に軸着された回動体４４とより
なる。前記回動体４４は、前記スティ３１に対して可倒
装置４１の本体部４２を前後に回動可能にするためのも
ので、前記腕部４３の内面に略面接触して設けられてい
る。そして、その回動体４４の前記表皮２１底部２２側
の端面に、前記スティ３１の水平部３２が固着されてい
る。なお、前記腕部４２には、本体部４２に対して回動
体４４が所定量回動した際にその回動体４４の一部が衝
突して、それ以上本体部４２が回動するのを阻止する回
動規制部４５がフランジ状に形成されている。The folding device 41 of this embodiment is of a friction type, and as shown in FIG. 5, a main body portion 42 made of a substantially U-shaped metal plate or the like having arms 43 formed at both ends; A rotating body 44 is rotatably mounted on the inside of the arm 43. The rotating body 44 is for allowing the main body 42 of the folding device 41 to rotate back and forth with respect to the stay 31, and is provided in substantially surface contact with the inner surface of the arm 43. The horizontal portion 32 of the stay 31 is fixed to an end surface of the rotating body 44 on the side of the bottom portion 22 of the skin 21. When the rotating body 44 rotates by a predetermined amount with respect to the main body 42, a part of the rotating body 44 collides with the arm 42, preventing the main body 42 from further rotating. The rotation restricting portion 45 is formed in a flange shape.
【００１７】筒状発泡体５１は、独立気泡を主体とする
発泡体を筒状に形成したもので、前記表皮２１底部２２
の内側と当接した状態で、その底部２２と可倒装置４１
間に位置するスティ３１の脚部３３周囲に設けられてい
る。この独立気泡を主体とする筒状発泡体５１は、枕部
用発泡体６１を形成する際に、図６および図７に示すよ
うに、発泡成形型７１のキャビティ面７２に配置された
表皮２１の底部２２と内接し、その表皮底部２２におけ
るスティ貫通部２３をシ−ルし、枕部用発泡体形成用の
液状発泡原料Ｐが漏出するのを防止する。しかもその
際、筒状発泡体５１は独立気泡を主体とするものからな
るため、液状発泡原料が含浸しにくく、確実にスティ貫
通部２３をシールできる。その結果、前記表皮底部２２
のスティ貫通部２３から漏出する液状発泡原料で表皮底
部２２のスティ貫通部２３周囲が汚されず、ヘッドレス
トの外観が損なわれることがない。加えて前記漏出によ
る液状発泡原料の無駄を防ぐこともできる。The tubular foam 51 is formed by forming a foam mainly composed of closed cells into a tubular shape.
The bottom 22 and the folding device 41 are in contact with the inside of the
It is provided around the leg 33 of the stay 31 located therebetween. When forming the foam body 61 for the pillow portion, the tubular foam body 51 mainly composed of the closed cells is used to form the skin 21 arranged on the cavity surface 72 of the foaming mold 71 as shown in FIGS. And the seal penetration portion 23 in the skin bottom portion 22 is sealed to prevent leakage of the liquid foaming raw material P for forming the foam for the pillow portion. In addition, at this time, since the tubular foam 51 is mainly composed of closed cells, it is difficult to impregnate the liquid foaming raw material, and the stay penetration portion 23 can be reliably sealed. As a result, the skin bottom 22
The periphery of the stylus penetrating portion 23 of the skin bottom 22 is not stained by the liquid foaming material leaking from the stylus penetrating portion 23, and the appearance of the headrest is not impaired. In addition, waste of the liquid foaming material due to the leakage can be prevented.
【００１８】また、前記筒状発泡体５１は、枕部用発泡
体６１の形成後に行う表皮底部２２のスリット形成時
に、筒状発泡体５１の側面に上下端に渡ってスリット５
３が形成され、それにより前記枕部１１に対するスティ
３１脚部３３の前後回動を可能とし、スティ３１が元の
位置に戻らないようにする。しかも前記のように筒状発
泡体５１は独立気泡を主体とするもので、枕部用発泡体
６１の形成時に液状発泡原料が含浸しないことから、前
記スリット５３部分にも液状発泡原料の含浸硬化部が存
在せず、その含浸硬化部による摩擦抵抗の増大を生じな
い。従って、前記スティ３１の回動がスティ３１とスリ
ット５３間の摩擦抵抗によって妨げられることがない。
さらに、前記筒状発泡体５１の表皮底部２２と当接する
面においても含浸硬化部が形成されないため、前記ステ
ィ３１の回動により筒状発泡体５１が変形しても、表皮
底部２２と筒状発泡体５１間に生じる摩擦抵抗は小さ
く、表皮底部２２が筒状発泡体５１に引っ張られて皺を
生じる恐れがない。Further, when forming the slit in the skin bottom 22 after forming the foam 61 for the pillow portion, the tubular foam 51 is provided with slits 5 extending over the upper and lower ends of the side of the tubular foam 51.
3 is formed, thereby enabling the stay 31 to pivot back and forth with respect to the pillow 11, so that the stay 31 does not return to its original position. Moreover, as described above, the tubular foam 51 is mainly composed of closed cells, and is not impregnated with the liquid foaming raw material when the pillow foam 61 is formed. There is no part, and no increase in frictional resistance is caused by the impregnated and cured part. Therefore, the rotation of the stay 31 is not hindered by the frictional resistance between the stay 31 and the slit 53.
Further, since the impregnated hardened portion is not formed even on the surface of the tubular foam 51 that abuts on the skin bottom 22, even if the tubular foam 51 is deformed by the rotation of the stay 31, the tubular bottom 51 and the tubular bottom 22 are not deformed. The frictional resistance generated between the foams 51 is small, and there is no possibility that the skin bottom 22 is pulled by the tubular foam 51 and wrinkles are generated.
【００１９】前記独立気泡を主体とする筒状発泡体５１
の材質は、独立気泡の割合いが５０％以上のもの、特に
は１００％に近いものほど好ましく、この実施例ではポ
リエチレンフォ−ムからなる。また、この筒状発泡体の
形状および大きさは、特に限定されるものではないが、
図４に示すように、表皮２１内のスティ３１の脚部３３
が回動する空間を占める形状および大きさ好ましく、こ
の実施例では、中心にスティ挿通孔５２の開いた外径２
５ｍｍ、長さ５０ｍｍの筒状からなる。A cylindrical foam 51 mainly composed of the closed cells
The material is preferably such that the percentage of closed cells is 50% or more, and particularly preferably close to 100%. In this embodiment, the material is made of polyethylene foam. The shape and size of the tubular foam are not particularly limited,
As shown in FIG. 4, the leg 33 of the stay 31 in the skin 21
In this embodiment, the outer diameter 2 of the stylus insertion hole 52 is large.
It is 5 mm long and 50 mm long.
【００２０】枕部用発泡体６１は、衝撃を吸収するため
のもので、前記可倒装置４１、スティ３１の水平部３２
および独立気泡を主体とする筒状発泡体５１を包囲して
表皮２１内に充満している。この枕部用発泡体６１は、
図６および図７に示したように、前記スティ３１の水平
部３２側が可倒装置４１とともに挿入された表皮２１内
でポリウレタン原料等の液状発泡原料Ｐから発泡形成さ
れたもので、前記表皮２１や可倒装置４１および独立気
泡を主体とする筒状発泡体５１と一体になっている。The pillow foam 61 is for absorbing the impact.
In addition, the inside of the outer skin 21 is filled by surrounding the tubular foam body 51 mainly composed of closed cells. This pillow foam 61 is
As shown in FIGS. 6 and 7, the horizontal portion 32 side of the stay 31 is formed by foaming from a liquid foaming material P such as a polyurethane material in the skin 21 inserted together with the folding device 41. And a collapsible device 41 and a tubular foam 51 mainly composed of closed cells.
【００２１】なお、前記枕部用発泡体６１の形成時に液
状発泡原料は可倒装置４１の回動体４４およびスティ３
１の水平部３２等に接着する。しかし、発泡終了後（発
泡体６１形成後）に成形品を発泡成形型７１から取り出
し、表皮底部２２および筒状発泡体５１の側面に前記ス
リット２４, ５３を形成し、スティ３１の脚部３３をや
や強引に枕部１１に対して前後回動させれば、前記可倒
装置４１の回動体４４等と枕部用発泡体６１との接着が
破壊され、可倒装置４１の回動体４４と本体部４２間の
相対的な回動、すなわち枕部１１の傾斜角度の調節が可
能となる。When the foam 61 for the pillow portion is formed, the liquid foaming material is supplied to the rotating body 44 and the stay 3 of the folding device 41.
It is adhered to the first horizontal portion 32 and the like. However, after the foaming is completed (after the foam 61 is formed), the molded product is taken out of the foam mold 71, and the slits 24 and 53 are formed on the skin bottom 22 and the side surface of the tubular foam 51, and the leg 33 of the stay 31 is formed. Is slightly forcibly rotated back and forth with respect to the pillow portion 11, the adhesion between the rotating body 44 and the like of the folding device 41 and the foam body 61 for the pillow portion is broken, and the rotating body 44 of the folding device 41 The relative rotation between the main body portions 42, that is, the adjustment of the inclination angle of the pillow portion 11 becomes possible.
【００２２】このようにしてなる前記の可倒式ヘッドレ
スト１０は、枕部１１を前後させると、その枕部１１内
の可倒装置４１によって枕部１１がスティ３１に対して
前後に回動し、それにより枕部１１の傾斜角度調節がな
される。その際、スティ３１の脚部３３は、枕部１１に
対して回動することになるが、表皮２１内のスティ３１
の脚部３３周囲には独立気泡を主体とする筒状発泡体５
１が設けられ、その筒状発泡体５１の側面に形成されて
いるスリット５３を通って脚部３３が前後回動できるた
め、脚部３３の動きが妨げられず、また、スティ３１が
元の位置に押し戻されることもない。When the pillow portion 11 is moved forward and backward, the pillow portion 11 pivots forward and backward with respect to the stay 31 by the folding device 41 in the pillow portion 11. Thereby, the inclination angle of the pillow portion 11 is adjusted. At this time, the leg portion 33 of the stay 31 rotates with respect to the pillow portion 11.
Around the leg 33 of the cylindrical foam 5 mainly composed of closed cells
1 is provided, and the leg 33 can be rotated back and forth through a slit 53 formed on the side surface of the tubular foam 51, so that the movement of the leg 33 is not hindered, and the stay 31 is restored to its original position. It is not pushed back into position.
【００２３】しかも、前記独立気泡を主体とする筒状発
泡体５１のスリット５３部分や表皮底部２２と当接する
面には、液状発泡原料が含浸硬化していないため、その
含浸硬化による摩擦抵抗の増大がなく、枕部１１に対し
てスティ３１がスムーズに回動するのみならず、その回
動時の筒状発泡体５１の変形によって、筒状発泡体５１
と当接する表皮底部２２が筒状発泡体５１に引っ張られ
て皺を生じることがない。In addition, since the liquid foaming material is not impregnated and hardened on the surface of the tubular foam 51 mainly composed of closed cells, which is in contact with the slit 53 and the skin bottom 22, the frictional resistance due to the impregnation hardening is reduced. There is no increase, and not only the stay 31 smoothly rotates with respect to the pillow portion 11, but also the deformation of the tubular foam 51 at the time of rotation causes the tubular foam 51 to rotate.
The bottom portion 22 of the skin that comes into contact with the base member is not pulled by the tubular foam body 51 to cause wrinkles.
【００２４】[0024]
【発明の効果】以上図示し説明したように、この発明の
可倒式ヘッドレストによれば、可倒装置を覆うカバ−体
が存在せず軽量で、可倒式ヘッドレストの成形時に液状
発泡原料が表皮底部のスティ貫通部から漏出するのを防
止することができ、経済的であるとともに、外観が良好
で、枕部の傾斜角度調節をスム−ズかつ確実に行なうこ
とができる。さらに、枕部の傾斜角度調節時に表皮底部
に皺を生じることもなく、使用時の美観に優れるもので
ある。As shown and described above, according to the retractable headrest of the present invention, there is no cover body for covering the retractable device, the weight is light, and the liquid foaming material is formed when the retractable headrest is formed. Leakage from the steep penetration at the bottom of the skin can be prevented, and it is economical, has a good appearance, and can smoothly and reliably adjust the inclination angle of the pillow. Furthermore, wrinkles do not occur on the bottom of the skin when the inclination angle of the pillow is adjusted, and the aesthetic appearance during use is excellent.
【図１】この発明の可倒式ヘッドレストの一例の斜視図
である。FIG. 1 is a perspective view of an example of a retractable headrest of the present invention.
【図２】同実施例の一部切り欠き斜視図である。FIG. 2 is a partially cutaway perspective view of the embodiment.
【図３】同実施例の中央縦断面図である。FIG. 3 is a central longitudinal sectional view of the embodiment.
【図４】同実施例のスティに沿う横断面図である。FIG. 4 is a transverse sectional view taken along a stay in the embodiment.
【図５】同実施例に用いられている可倒装置の斜視図で
ある。FIG. 5 is a perspective view of a folding device used in the embodiment.
【図６】同実施例の可倒式ヘッドレストを製造する際を
示す成形型の中央部の横断面図である。FIG. 6 is a transverse cross-sectional view of a center portion of the molding die when manufacturing the folding headrest of the embodiment.
【図７】同実施例の液状発泡原料の発泡時を示す成形型
の要部拡大断面図である。FIG. 7 is an enlarged cross-sectional view of a main part of a molding die during foaming of the liquid foaming raw material of the same example.
１０ 可倒式ヘッドレスト １１ 枕部 ２１ 表皮 ２２ 表皮底部 ２３ スティ貫通部 ３１ スティ ３２ スティの水平部 ３３ スティの脚部 ４１ 可倒装置 ５１ 独立気泡を主体とする筒状発泡体 ５３ 独立気泡を主体とする筒状発泡体に形成されたス
リット ６１ 枕部用発泡体DESCRIPTION OF SYMBOLS 10 Foldable headrest 11 Pillow part 21 Skin 22 Skin bottom 23 Stay penetration part 31 Stay 32 Horizontal part of stay 33 Leg part of stay 41 Folding device 51 Cylindrical foam mainly composed of closed cells 53 Mainly composed of closed cells 61 formed in a cylindrical foam to be foamed
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｂ２９Ｋ 105:04 Ｂ２９Ｌ 31:58 (58)調査した分野(Int.Cl.7，ＤＢ名) A47C 7/38 B60N 2/48 B29C 39/00 - 39/44 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 identification code FI B29K 105: 04 B29L 31:58 (58) Investigated field (Int.Cl. 7 , DB name) A47C 7/38 B60N 2/48 B29C 39/00-39/44
Claims (2)
の一端側が前記可倒装置とともに表皮内に挿入されて当
該スティの他端側が前記表皮底部から突出するインサ−
トと、 前記表皮底部の内面と当接するように該表皮底部内面と
前記可倒装置間のスティ外周に装着された筒状発泡体
と、 前記可倒装置およびスティの一端側と筒状発泡体を包囲
して前記表皮内で液状発泡原料から発泡形成された枕部
用発泡体とよりなって、前記筒状発泡体が独立気泡を主体とするものとされ、 前記表皮底部のスティが突出する部分および筒状発泡体
の側面には、前記表皮によって覆われたヘッドレスト枕
部の傾斜角度調節時に、当該枕部に対するスティの相対
的前後回動を可能にするスリットが、前記枕部用発泡体
の発泡成形後に形成されていることを特徴とする可倒式
ヘッドレスト。An insert having a bag-shaped skin and one end of a stay having a folding device inserted into the skin together with the folding device, and the other end of the stay protruding from the bottom of the skin.
And a tubular foam attached to the outer periphery of the stay between the inner surface of the skin bottom and the collapsible device so as to contact the inner surface of the skin bottom.
And a foam for a pillow portion, which is formed by foaming a liquid foaming material in the skin surrounding one end side of the folding device and the stay and the tubular foam, wherein the tubular foam is closed cells. When the inclination angle of the headrest pillow portion covered by the skin is adjusted at the portion where the stay at the bottom of the skin projects and the side surface of the tubular foam, the stay relative to the pillow portion is adjusted. The slit for allowing the back and forth rotation is provided by the foam for the pillow part.
A foldable headrest formed after foam molding .
チレン発泡体からなることを特徴とする可倒式ヘッドレ
スト。2. A according to claim 1, retractable headrest tubular onset foam body is characterized by comprising a polyethylene foam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08257608A JP3124236B2 (en) | 1996-09-06 | 1996-09-06 | Retractable headrest |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08257608A JP3124236B2 (en) | 1996-09-06 | 1996-09-06 | Retractable headrest |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1080337A JPH1080337A (en) | 1998-03-31 |
| JP3124236B2 true JP3124236B2 (en) | 2001-01-15 |
Family
ID=17308639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP08257608A Expired - Fee Related JP3124236B2 (en) | 1996-09-06 | 1996-09-06 | Retractable headrest |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3124236B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI504496B (en) * | 2010-11-30 | 2015-10-21 | Tzong In Yeh | Foam product and method of manufacturing the same |
| JP6396195B2 (en) * | 2014-12-10 | 2018-09-26 | トヨタ紡織株式会社 | Headrest |
| EP3437820A4 (en) | 2016-03-29 | 2019-10-16 | Kaneka Corporation | Method for manufacturing foaming composite molding, in-mold foaming molding unit, foaming composite molding, and mold for foaming composite molding |
| CN109070401A (en) | 2016-03-29 | 2018-12-21 | 株式会社钟化 | The manufacturing method of foaming composite shaped body and the composite shaped body that foams |
| JP7410792B2 (en) * | 2020-04-30 | 2024-01-10 | 株式会社イノアックコーポレーション | Headrest manufacturing method |
| FR3127430B1 (en) * | 2021-09-28 | 2024-06-14 | Tesca France | Method for producing a motor vehicle seat headrest |
-
1996
- 1996-09-06 JP JP08257608A patent/JP3124236B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1080337A (en) | 1998-03-31 |
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