JP3171669B2 - Method of manufacturing retractable headrest - Google Patents
Method of manufacturing retractable headrestInfo
- Publication number
- JP3171669B2 JP3171669B2 JP17478392A JP17478392A JP3171669B2 JP 3171669 B2 JP3171669 B2 JP 3171669B2 JP 17478392 A JP17478392 A JP 17478392A JP 17478392 A JP17478392 A JP 17478392A JP 3171669 B2 JP3171669 B2 JP 3171669B2
- Authority
- JP
- Japan
- Prior art keywords
- stay
- skin
- bag
- headrest
- recess
- 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
- 238000004519 manufacturing process Methods 0.000 title description 11
- 210000003491 skin Anatomy 0.000 claims description 43
- 238000000465 moulding Methods 0.000 claims description 22
- 229920003002 synthetic resin Polymers 0.000 claims description 14
- 239000000057 synthetic resin Substances 0.000 claims description 14
- 239000006261 foam material Substances 0.000 claims description 8
- 239000006260 foam Substances 0.000 claims description 6
- 210000002615 epidermis Anatomy 0.000 claims description 2
- 238000000034 method Methods 0.000 description 7
- 238000012856 packing Methods 0.000 description 6
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- 238000000071 blow moulding Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 102200097286 rs199472825 Human genes 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000007920 subcutaneous administration Methods 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
Description
【０００１】[0001]
【産業上の利用分野】この発明は可倒式ヘッドレストの
製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a folding headrest.
【０００２】[0002]
【従来の技術】一般的な可倒式ヘッドレストの一例を図
４に示す。図示したように、このヘッドレスト４０はヘ
ッドレスト外形状を規定する塩化ビニールなどからなる
袋状表皮４１と該表皮４１と一体に形成された合成樹脂
発泡体４２と芯体４３とからなり、ステー４４を介して
座席本体４５の上部に取り付けられている。2. Description of the Related Art FIG. 4 shows an example of a general folding headrest. As shown, the headrest 40 includes a bag-shaped skin 41 made of vinyl chloride or the like defining the outer shape of the headrest, a synthetic resin foam 42 formed integrally with the skin 41, and a core 43, and a stay 44 is formed. It is attached to the upper part of the seat main body 45 through the.
【０００３】前記ヘッドレスト４０は、内蔵される芯体
４３が前記ステー４４に連結されたラチェットなど公知
の間欠的な可倒機構を備えているとともに、下部に当該
ヘッドレスト４０を前記ステー４４に対して傾倒せしめ
るための可動空間４６を有していて、図中の鎖線で示さ
れるように、一定角度を段階的に傾倒可能に構成されて
いる。[0003] The headrest 40 has a well-known intermittent tilting mechanism such as a ratchet in which a built-in core 43 is connected to the stay 44, and the headrest 40 is attached to the lower part of the headrest 40 with respect to the stay 44. It has a movable space 46 for tilting, and as shown by a dashed line in the drawing, is configured to be tiltable at a fixed angle in a stepwise manner.
【０００４】このような可倒式ヘッドレストの製造方法
の一例を図５ないし図７に示す。まず、ブロー成形また
はスラッシュ成形などによって表皮４１が袋状に形成さ
れる。その際、前述した回転機構を有する芯体４３がそ
のステー４４を表皮下部から外部に突出させた状態で内
包される。FIGS. 5 to 7 show an example of a method of manufacturing such a tiltable headrest. First, the skin 41 is formed into a bag shape by blow molding or slash molding. At this time, the core body 43 having the above-described rotation mechanism is included in a state in which the stay 44 is projected from the subcutaneous part to the outside.
【０００５】そして、前記表皮４１のステー４４周辺
が、表皮成形時に型によって転写され、当該ステー４４
の可動空間４６を規定する罫書線４６に沿って切除され
る。この表皮４１は、図６に示されるように、成形型５
０の下型５１にセットされ、前記表皮４１と芯体４３と
の間に合成樹脂発泡材料５５が注入され一体に発泡成形
される。符号５２はヒンジ５４を介して前記下型５１に
開閉自在に取り付けられた上型で、前記ステー４４の可
動空間４６に沿って挿入される凸型５３を備えている。
この凸型５３によって成形時のステー位置が固定される
とともにヘッドレストの可動空間４６が形成される。[0005] The periphery of the stay 44 of the outer skin 41 is transcribed by a mold at the time of forming the outer skin.
Is cut along a score line 46 that defines the movable space 46 of FIG. As shown in FIG. 6, the outer skin 41 is
The lower mold 51 is set in a lower mold 51, and a synthetic resin foam material 55 is injected between the skin 41 and the core 43, and integrally foamed. Reference numeral 52 denotes an upper die which is openably and closably attached to the lower die 51 via a hinge 54, and has a convex die 53 inserted along the movable space 46 of the stay 44.
The protruding mold 53 fixes the stay position at the time of molding, and forms a movable space 46 for the headrest.
【０００６】しかしながら、かかる方法にあっては、表
皮４１が袋状でありかつ内部に芯体を内包しているの
で、ステー４４の前記可動空間４６を機械的に打ち抜く
ことが困難であった。そのため、ナイフなどで人手によ
り切り抜き作業を行なわなければならず、その作業は煩
雑であるだけでなく、その切り抜き面がでこぼこになっ
て製品外観を損ねるという問題があった。また、前記表
皮４１の厚みは通常０．５から１．５ｍｍ程度であるた
め、成形型の凸型５３とのシール面が薄く、成形時の樹
脂漏れの原因となっていた。However, in this method, it is difficult to mechanically punch the movable space 46 of the stay 44 because the outer skin 41 has a bag-like shape and contains a core inside. For this reason, the clipping operation has to be performed manually with a knife or the like, which is not only complicated, but also has a problem that the cutout surface is uneven and the product appearance is impaired. In addition, since the thickness of the skin 41 is usually about 0.5 to 1.5 mm, the sealing surface with the convex 53 of the molding die is thin, which causes resin leakage during molding.
【０００７】表皮４１と、この凸型５３との間からの合
成樹脂発泡材料５５の漏れを防ぐために、図７からより
よく理解されるように、あらかじめ該表皮４１の可動空
間４６周囲にウレタンスラブ製パッキング４９が貼着さ
れることがある。このパッキング４９は成形後には取り
除かれる。しかるに、前記パッキング４９を表皮４１の
所定位置に貼着し、かつ成形後に取り除く作業は煩雑な
工程を要していた。さらに、成形時、このパッキング４
９はそれが貼着されている表皮部分が内部から支承され
ていないためパッキングの用をあまりなさず、合成樹脂
発泡材料の漏れを完全に防ぐことが困難であるばかり
か、時には表皮の成形型へのセットが妨げられ製品形状
を変化させるおそれがあった。In order to prevent the synthetic resin foam material 55 from leaking between the outer skin 41 and the convex 53, as is better understood from FIG. 7, a urethane slab is previously placed around the movable space 46 of the outer skin 41. The packing 49 made may be stuck. This packing 49 is removed after molding. However, the work of attaching the packing 49 to a predetermined position of the outer skin 41 and removing it after molding has required a complicated process. Furthermore, during molding, this packing 4
No. 9 does not make much use of packing because the skin portion to which it is adhered is not supported from the inside, it is difficult to completely prevent the leakage of the synthetic resin foam material, and sometimes the mold for the skin is used. There is a possibility that the setting of the product may be hindered and the product shape may be changed.
【０００８】[0008]
【発明が解決しようとする課題】この発明は上記した問
題点に鑑み提案されたものであって、成形時の樹脂漏れ
がなく製品外観の良好な可倒式ヘッドレストを簡便に得
ることのできる可倒式ヘッドレストの製造方法を提供し
ようとするものである。SUMMARY OF THE INVENTION The present invention has been proposed in view of the above-mentioned problems, and it is possible to easily obtain a retractable headrest having a good product appearance without resin leakage during molding. It is an object of the present invention to provide a method for manufacturing an inverted headrest.
【０００９】[0009]
【課題を解決するための手段】すなわち、この発明は、
表皮と一体に形成された合成樹脂発泡体内にステーと連
結された可倒機構を有する芯体が内蔵され、かつ前記ス
テーに対して一定角度可倒するための可動空間を備えた
可倒式ヘッドレストを得るに際し、ステーと連結された
可倒機構を有する芯体を内包し、かつ前記ステーの周囲
に前記可動空間を規定するための側壁部を備えた凹所を
有する袋状表皮を形成する工程と、前記袋状表皮の前記
凹所内底部を切除する工程と、前記袋状表皮の凹所を経
て前記可動空間を規定する凸型部を含む所定の成形型内
に前記ステーおよび芯体を内包する表皮を保持する工程
と、前記成形型に保持された袋状表皮内に合成樹脂発泡
材料を注入し前記芯体と一体に合成樹脂発泡体を成形す
る工程と、前記成形型より成形品を脱型する工程とから
なることを特徴とする可倒式ヘッドレストの製造方法に
係る。That is, the present invention provides:
A collapsible headrest having a core body having a collapsible mechanism connected to a stay in a synthetic resin foam formed integrally with the skin, and having a movable space for collapsing at a fixed angle with respect to the stay. Forming a bag-shaped outer skin including a core body having a tilting mechanism connected to a stay and having a recess around the stay and having a side wall for defining the movable space. Cutting off the bottom of the inside of the recess of the bag-like skin, and enclosing the stay and the core body in a predetermined mold including a convex portion defining the movable space through the recess of the bag-like skin. A step of holding a skin, and a step of injecting a synthetic resin foam material into the bag-shaped skin held by the mold to form a synthetic resin foam integrally with the core, and forming a molded product from the mold. And demolding process. That according to the method of manufacturing the retractable headrest.
【００１０】[0010]
【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製造方
法に用いられる袋状表皮の一例を底面から見た状態を示
す斜視図、図２はその２−２線における断面図、図３は
この発明製法の一例を示す成形型の断面図である。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 bag-like skin used in the method of manufacturing a folding headrest according to the present invention, as viewed from the bottom, FIG. 2 is a sectional view taken along line 2-2, and FIG. It is sectional drawing of the shaping | molding die which shows an example.
【００１１】この発明の可倒式ヘッドレストの製造方法
は、芯体を内包した袋状表皮の形成工程と、前記袋状表
皮に設けた凹所の内底部を切除する工程と、成形型内に
前記表皮を保持する工程と、前記表皮を前記芯体とを合
成樹脂発泡体を介して一体に成形する工程と、脱型工程
とからなり、図４に示したような、ステーと連結された
可倒機構を有する芯体が内蔵され、前記ステーに対して
一定角度可倒する可動空間を備えたヘッドレストを得る
ためのものである。[0011] The method for manufacturing a folding headrest according to the present invention comprises the steps of forming a bag-shaped skin containing a core, cutting off the inner bottom of a recess provided in the bag-shaped skin, The method comprises a step of holding the skin, a step of integrally molding the skin with the core via a synthetic resin foam, and a step of demolding, which is connected to a stay as shown in FIG. A headrest having a movable space in which a core body having a tilting mechanism is built-in and which can be tilted at a fixed angle with respect to the stay is provided.
【００１２】まず、表皮１０に内包される芯体１１につ
いて説明する。この芯体１１は、図１に示されるよう
に、当該芯体１１内部に設けられたヘッドレストを段階
的に傾ける公知の可倒機構（図示せず）と連結するステ
ー１２を備えている。First, the core 11 included in the skin 10 will be described. As shown in FIG. 1, the core body 11 includes a stay 12 that is connected to a known tilting mechanism (not shown) that gradually tilts a headrest provided inside the core body 11.
【００１３】表皮１０は、塩化ビニールなどがブロー成
形またはスラッシュ成形またはローテーション成形など
によって袋状に形成されていて、前記芯体１１がそのス
テー１２を該表皮１０の底面１３に設けられた凹所１５
から突出させた状態で内包されている。The skin 10 is formed in a bag shape by blow molding, slash molding or rotation molding of vinyl chloride or the like, and the core body 11 has its stay 12 formed in a recess provided on the bottom surface 13 of the skin 10. Fifteen
It is included in a state of protruding from.
【００１４】この凹所１５はヘッドレストにおいて前記
ステー１２の可動空間を規定するとともに、成形時に成
形型とのシール面を構成するためのもので、当該ステー
１２の周囲およびその可動軌跡に沿った側壁部１４を備
えている。この凹所１５の深さは適宜に決定されるが、
成形型とのシール性を高めるためにできるだけ深く形成
されかつ、該凹所底部方向に狭径となるテーパ形状に形
成されることが好ましい。なお、この実施例において、
前記凹所１５は３ｍｍから１０ｍｍの深さを有してい
る。The recess 15 defines a movable space of the stay 12 in the headrest and forms a sealing surface with a molding die at the time of molding. The recess 15 has a side wall around the stay 12 and along a movable locus thereof. A section 14 is provided. Although the depth of the recess 15 is appropriately determined,
It is preferable that the recess is formed as deep as possible in order to enhance the sealing property with the molding die, and is formed in a tapered shape having a smaller diameter in the direction of the bottom of the recess. In this example,
The recess 15 has a depth of 3 mm to 10 mm.
【００１５】次に、図２に示されるように、表皮１０の
凹所内底部１６が前記側壁部１４の内底縁１７に沿って
切除される。Next, as shown in FIG. 2, the inner bottom 16 of the recess of the skin 10 is cut along the inner bottom edge 17 of the side wall 14.
【００１６】そして、図３に示されるように、前記凹所
底面部１６を切除した表皮１０が芯体１１およびステー
１２を内包した状態で成形型２０に配される。前記成形
型２０はヘッドレスト形状を規定するキャビティ型２１
と当該キャビティ型２１とヒンジ２４によって開閉自在
に構成された蓋型２２，２３とからなる。なお、前記キ
ャビティ型２１は必要に応じてさらに二つ以上に分割可
能に構成される。Then, as shown in FIG. 3, the skin 10 from which the recess bottom surface 16 has been cut is placed on a molding die 20 with the core body 11 and the stay 12 included therein. The mold 20 is a cavity mold 21 for defining a headrest shape.
And lid molds 22 and 23 which can be opened and closed by the cavity mold 21 and the hinge 24. The cavity mold 21 is configured so that it can be further divided into two or more as necessary.
【００１７】一方の蓋型２２はヘッドレストの前後動に
よって規定されるステー１２の可動空間２５を形成する
ための凸型部２６およびステー位置を固定するための凹
部２７をその一側に有している。前記凸型部２６が前記
凹所１５を経て表皮１０内に挿入されることにより、前
記凹部２７と他方の蓋型２３とによってステー１２が固
定されるとともに当該ステー１２の可動空間２５を決定
しながら、前記凹所１５のテーパ面となっている側壁部
１４と面接触し表皮１０と成形型２０との間をシールす
る。One lid mold 22 has a convex portion 26 for forming a movable space 25 of the stay 12 defined by the forward and backward movement of the headrest and a concave portion 27 for fixing the stay position on one side. I have. When the convex portion 26 is inserted into the epidermis 10 through the concave portion 15, the stay 12 is fixed by the concave portion 27 and the other lid mold 23, and the movable space 25 of the stay 12 is determined. While being in surface contact with the side wall portion 14 which is the tapered surface of the concave portion 15, the space between the skin 10 and the mold 20 is sealed.
【００１８】そして、成形型２０に形成された図示しな
い注入口より、前記表皮１０内側に合成樹脂発泡材料３
０が注入され前記芯体１１と一体に発泡成形される。そ
の際、前記合成樹脂発泡材料３０の発泡圧によって、前
記凹所１５の側壁部１４が凸型部２６の側面２８と強固
に密着して、成形型２０を確実に密封する。Then, a synthetic resin foam material 3 is introduced into the inside of the skin 10 from an injection port (not shown) formed in the molding die 20.
0 is injected and foamed integrally with the core 11. At this time, due to the foaming pressure of the synthetic resin foam material 30, the side wall portion 14 of the recess 15 is firmly adhered to the side surface 28 of the convex portion 26, and the molding die 20 is securely sealed.
【００１９】発泡硬化後、前記成形型２０が型開きされ
成形品が脱型される。After the foaming and curing, the mold 20 is opened and the molded product is released.
【００２０】[0020]
【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の製造方法によれば、表皮に形成さ
れた凹所側壁部が成形型の凸型部と密着するので、成形
時の樹脂漏れのおそれがない。また、ステーの可動空間
を構成する表皮の切断面が凹所内底部、すなわち成形品
の奥部（非可視部）であるため、切口を整える必要がな
く作業性が大幅に向上し製品外観も良好である。As shown and described above, according to the method of manufacturing the retractable headrest of the present invention, the side wall of the recess formed in the skin is in close contact with the convex portion of the molding die. There is no risk of resin leakage. In addition, since the cut surface of the skin that forms the movable space of the stay is the bottom of the recess, that is, the inner part (invisible portion) of the molded product, it is not necessary to adjust the cut edge, greatly improving workability and improving the appearance of the product. It is.
【図１】この発明の可倒式ヘッドレストの製造方法に用
いられる袋状表皮の一例を底面から見た状態を示す斜視
図である。FIG. 1 is a perspective view showing an example of a bag-like skin used in a method of manufacturing a folding headrest according to the present invention, as viewed from a bottom surface.
【図２】その２−２線における断面図である。FIG. 2 is a sectional view taken along the line 2-2.
【図３】この発明製法の一例を示す成形型の断面図であ
る。FIG. 3 is a sectional view of a molding die showing an example of the production method of the present invention.
【図４】一般的な可倒式ヘッドレストの一例を示す断面
図である。FIG. 4 is a sectional view showing an example of a general retractable headrest.
【図５】従来の可倒式ヘッドレストに用いられる表皮の
一例を底面から見た状態を示す斜視図である。FIG. 5 is a perspective view showing an example of a skin used for a conventional retractable headrest when viewed from a bottom surface.
【図６】従来の可倒式ヘッドレストの製造方法の一例を
示す成形型の断面図である。FIG. 6 is a cross-sectional view of a molding die showing an example of a conventional method of manufacturing a folding headrest.
【図７】ウレタンパッキングを貼着した状態を示す従来
の表皮を裏面から見た斜視図である。FIG. 7 is a perspective view of a conventional outer skin showing a state where urethane packing is attached, as viewed from the back surface.
１０ 表皮 １１ 芯体 １２ ステー １４ 側壁部 １５ 凹所 １６ 内底部 ２０ 成形型 ２５ 可動空間 ２６ 凸型部 ３０ 合成樹脂発泡材料 DESCRIPTION OF SYMBOLS 10 Skin 11 Core body 12 Stay 14 Side wall part 15 Concave part 16 Inner bottom part 20 Mold 25 Movable space 26 Convex part 30 Synthetic resin foam material
───────────────────────────────────────────────────── 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) B29C 39/10 B29C 39/22 - 39/36 B60N 2/48 B60R 21/055 B68G 7/06 A47C 7/38 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 identification code FI // B29K 105: 04 B29L 31:58 (58) Fields surveyed (Int.Cl. 7 , DB name) B29C 39/10 B29C 39 / 22-39/36 B60N 2/48 B60R 21/055 B68G 7/06 A47C 7/38
Claims (1)
内にステーと連結された可倒機構を有する芯体が内蔵さ
れ、かつ前記ステーに対して一定角度可倒するための可
動空間を備えた可倒式ヘッドレストを得るに際し、 ａ．ステーと連結された可倒機構を有する芯体を内包
し、かつ前記ステーの周囲に前記可動空間を規定するた
めの側壁部を備えた凹所を有する袋状表皮を形成する工
程と、 ｂ．前記袋状表皮の前記凹所内底部を切除する工程と、 ｃ．前記袋状表皮の凹所を経て前記可動空間を規定する
凸型部を含む所定の成形型内に前記ステーおよび芯体を
内包する表皮を保持する工程と、 ｄ．前記成形型に保持された袋状表皮内に合成樹脂発泡
材料を注入し前記芯体と一体に合成樹脂発泡体を成形す
る工程と、 ｅ．前記成形型より成形品を脱型する工程とからなるこ
とを特徴とする可倒式ヘッドレストの製造方法。1. A core body having a tilting mechanism connected to a stay is built in a synthetic resin foam formed integrally with a skin, and a movable space is provided for tilting the stay at a predetermined angle with respect to the stay. In obtaining the retractable headrest, a. Forming a bag-shaped outer skin including a core body having a tilting mechanism connected to a stay and having a recess around the stay and having a side wall for defining the movable space; b. Cutting off the bottom inside the recess of the bag-like epidermis; c. Holding a skin enclosing the stay and the core body in a predetermined mold including a convex portion defining the movable space through a recess of the bag-shaped skin; d. A step of injecting a synthetic resin foam material into the bag-like skin held by the mold to form a synthetic resin foam integrally with the core; e. Removing the molded product from the molding die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17478392A JP3171669B2 (en) | 1992-06-08 | 1992-06-08 | Method of manufacturing retractable headrest |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17478392A JP3171669B2 (en) | 1992-06-08 | 1992-06-08 | Method of manufacturing retractable headrest |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05337965A JPH05337965A (en) | 1993-12-21 |
| JP3171669B2 true JP3171669B2 (en) | 2001-05-28 |
Family
ID=15984596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17478392A Expired - Fee Related JP3171669B2 (en) | 1992-06-08 | 1992-06-08 | Method of manufacturing retractable headrest |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3171669B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5681088A (en) * | 1996-08-22 | 1997-10-28 | Tachi-S Co., Ltd. | Position adjustable headrest |
-
1992
- 1992-06-08 JP JP17478392A patent/JP3171669B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05337965A (en) | 1993-12-21 |
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