JPH04303402A - Bare head rest having different hardness and its manufacture - Google Patents
Bare head rest having different hardness and its manufactureInfo
- Publication number
- JPH04303402A JPH04303402A JP3093017A JP9301791A JPH04303402A JP H04303402 A JPH04303402 A JP H04303402A JP 3093017 A JP3093017 A JP 3093017A JP 9301791 A JP9301791 A JP 9301791A JP H04303402 A JPH04303402 A JP H04303402A
- Authority
- JP
- Japan
- Prior art keywords
- pillow
- insert
- hardness
- different hardness
- pillow part
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 18
- 239000000463 material Substances 0.000 claims description 27
- 239000006260 foam Substances 0.000 claims description 16
- 238000005187 foaming Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 9
- 239000002994 raw material Substances 0.000 description 6
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000037303 wrinkles Effects 0.000 description 3
- 229920005830 Polyurethane Foam Polymers 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000011496 polyurethane foam Substances 0.000 description 2
- 206010016322 Feeling abnormal Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000010097 foam moulding Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Molding Of Porous Articles (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、枕部の表面の硬さが部
分的に異なる異硬度裸ヘッドレスト、およびその製造方
法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bare headrest with different hardness in which the surface of the pillow part has partially different hardness, and a method for manufacturing the same.
【０００２】0002
【従来の技術】異硬度裸ヘッドレストは、枕部に表皮材
が被せられて自動車用ヘッドレストとして用いられる。
その自動車用ヘッドレストは、衝撃から頭部を保護する
というヘッドレスト本来の機能の他に、頭部休憩時に快
適な感触を頭部に与える機能を有するものが望まれるよ
うになった。そのため、衝撃吸収機能を損なわず、しか
も頭部にソフトな感触を与えることができるように、頭
部との接触部を他部よりも柔らかくした異硬度裸ヘッド
レストが用いられるようになった。2. Description of the Related Art A bare headrest with different hardness is used as a headrest for an automobile by covering a pillow portion with a skin material. In addition to the headrest's original function of protecting the head from impact, it has become desirable for the automobile headrest to have a function of providing a comfortable feeling to the head when the head is resting. For this reason, bare headrests with different hardness have come into use in which the part that contacts the head is softer than the other parts so that the impact absorption function is not impaired and the head is given a soft feel.
【０００３】従来の異硬度裸ヘッドレストとして、図５
の断面図に示すような構成のものがある。その異硬度裸
ヘッドレストは、発泡体からなる枕部１０にインサート
１２の一部が挿入埋設されたものであって、その枕部１
０表面の頭部接触部に、その枕部１０よりも柔らかい発
泡体等からなる異硬度部材１４が貼着されたものである
。ところで、その異硬度裸ヘッドレストにあっては、硬
さの境界部１６で急激な硬さ変化があると、その境界部
に頭部が接触した際に違和感を与え、せっかくのソフト
感が台無しになってしまう。そこでその違和感をなくす
ため、異硬度部材１４の縁を徐々に薄くして、硬さ変化
が緩やかになるようにすることもなされている。しかし
、異硬度部材をそのような形状にするのは複雑な裁断に
よらなければならず、その作業が容易ではない問題があ
る。さらに、異硬度部材１４縁部における厚みのばらつ
き、あるいは貼着時における異硬度部材１４のずれ等に
より硬さの境界部１６に段差、溝を生じやすく、表皮材
を枕部１０に被せた際にその境界部１６でしわ、凹凸等
を生じヘッドレストの外観が損なわれる問題もあった。FIG. 5 shows a conventional bare headrest with different hardness.
There is a configuration as shown in the cross-sectional view. The bare headrest with different hardness has a part of the insert 12 inserted and buried in the pillow part 10 made of foam.
A member 14 of different hardness made of a foam or the like that is softer than the pillow portion 10 is attached to the head contact portion of the zero surface. By the way, in the bare headrest with different hardness, if there is a sudden change in hardness at the hardness boundary 16, the head will feel uncomfortable when the boundary comes into contact with the boundary, and the soft feeling will be ruined. turn into. Therefore, in order to eliminate this discomfort, the edges of the different hardness member 14 are gradually made thinner so that the change in hardness becomes gentler. However, forming a member of different hardness into such a shape requires complicated cutting, which poses a problem in that the work is not easy. Further, due to variations in thickness at the edges of the different hardness member 14 or misalignment of the different hardness member 14 during attachment, steps and grooves are likely to occur at the hardness boundary 16, and when the skin material is placed on the pillow part 10, There is also the problem that wrinkles, unevenness, etc. occur at the boundary portion 16, and the appearance of the headrest is impaired.
【０００４】一方、前記異硬度裸ヘッドレストの製造方
法としては、異硬度部材を成形型のキャビティ面所定位
置に保持して、そのキャビティ内に液状発泡原料を注入
し、異硬度部材と一体に枕部を発泡成形する方法がある
。しかし、その方法は液状発泡原料の注入時あるいは発
泡時に異硬度部材がキャビティ面から浮いたり、ずれた
りし易く、正しい位置に異硬度部材を設けられないこと
がある。また、異硬度部材裏面に液状発泡原料が含浸硬
化して、異硬度部材のソフト感を損ねる問題もある。
なおインサートについては、あらかじめその一部をキャ
ビティ内に装置して、液状発泡原料の発泡時にインサー
トの一部を枕部内に埋設することもなされるが、埋設さ
れるインサート内に枕部の高さ調節機構あるいは角度調
節機構等を有する場合には、液状発泡原料がインサート
内に侵入してそれらの機構を壊すおそれがある。そのた
め内部に高さ調節機構等を有するインサートを用いる場
合には、図６の断面図に示すように上型と一体になった
所定形状の突型１８を成形型１９のキャビティ２０内に
突出させ、そのキャビティ２０内で液状発泡原料２２を
発泡させて中空の枕部を形成し、その後枕部の中空部に
前記突型１８と同形状からなるインサートの一部を挿入
することがなされている。On the other hand, the method for manufacturing the bare headrest with different hardness is to hold the different hardness member at a predetermined position on the cavity surface of a mold, inject liquid foaming raw material into the cavity, and form the pillow integrally with the different hardness member. There is a method of foam molding the parts. However, in this method, the different hardness member tends to float or shift from the cavity surface during injection of the liquid foaming raw material or foaming, and the different hardness member may not be provided at the correct position. There is also the problem that the liquid foaming raw material impregnates and hardens the back surface of the member with different hardness, impairing the soft feel of the member with different hardness. Regarding the insert, a part of the insert may be installed in the cavity in advance and a part of the insert may be buried in the pillow part during foaming of the liquid foaming material, but the height of the pillow part may vary within the inserted insert. If the insert has an adjustment mechanism or an angle adjustment mechanism, there is a risk that the liquid foaming material may enter the insert and destroy the mechanism. Therefore, when using an insert having an internal height adjustment mechanism, etc., a protruding mold 18 of a predetermined shape integrated with the upper mold is projected into the cavity 20 of the mold 19, as shown in the cross-sectional view of FIG. , a liquid foaming raw material 22 is foamed in the cavity 20 to form a hollow pillow part, and then a part of an insert having the same shape as the protruding mold 18 is inserted into the hollow part of the pillow part. .
【０００５】[0005]
【発明が解決しようとする課題】本発明は前記の点に鑑
み、枕部の硬さ境界部において硬さが急変せず、しかも
その硬さ境界部に段差、溝等を生じることのない異硬度
裸ヘッドレスト、およびその簡単な製造方法を提供しよ
うとするものである。Problems to be Solved by the Invention In view of the above-mentioned points, the present invention provides an improvement in which the hardness of the pillow part does not suddenly change at the hardness boundary, and furthermore, no steps, grooves, etc. are created at the hardness boundary. It is an object of the present invention to provide a hardness-free headrest and a simple manufacturing method thereof.
【０００６】[0006]
【課題を解決するための手段】前記の目的を達成するた
め本発明は、発泡体からなる枕部と、その枕部内の中空
部に一部が挿入されたインサートとからなる異硬度裸ヘ
ッドレストにおいて、枕部の頭部接触側内面と、それと
相対するインサート表面との間に空間を設けたのである
。また、枕部の頭部接触面を所望の硬さにするため、枕
部を構成する発泡体とは硬さの異なるクッション材を前
記枕部内の空間に挿入したのである。一方、本発明の異
硬度裸ヘッドレストを製造するため、所定形状の突型を
成形型のキャビティ内に突出させて保持し、そのキャビ
ティ内に液状発泡原料を注入し、発泡させて内部が中空
の枕部を形成する際に、枕部の頭部接触側内面を形成す
る突型の表面を、後に枕部の中空部に挿入して枕部の頭
部接触側内面と相対するインサートの表面よりも凸形状
にしたのである。また、枕部の頭部接触面が所望の硬さ
からなる異硬度裸ヘッドレストを得るため、前記枕部の
頭部接触側内面と相対するインサートの表面に、枕部を
構成する発泡体とは硬さの異なるクッション材を固定し
、そのインサートをクッション材とともに枕部内の中空
部に挿入して異硬度裸ヘッドレストを製造することにし
たのである。[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention provides a bare headrest of different hardness comprising a pillow part made of a foam and an insert partially inserted into a hollow part in the pillow part. A space is provided between the head-contacting inner surface of the pillow portion and the opposing insert surface. Further, in order to make the head contact surface of the pillow part have the desired hardness, a cushioning material having a hardness different from that of the foam forming the pillow part was inserted into the space inside the pillow part. On the other hand, in order to manufacture the bare headrest with different hardness of the present invention, a protruding mold of a predetermined shape is projected and held in the cavity of the mold, and a liquid foaming material is injected into the cavity and foamed to create a hollow interior. When forming the pillow part, the protruding surface forming the inner surface on the head contact side of the pillow part is later inserted into the hollow part of the pillow part, and the surface of the insert facing the inner surface of the pillow part on the head contact side is inserted into the hollow part of the pillow part. It also has a convex shape. In addition, in order to obtain a bare headrest with different hardness in which the head contacting surface of the pillow part has a desired hardness, the foam constituting the pillow part is We decided to manufacture bare headrests with different hardness by fixing cushioning materials of different hardness and inserting the inserts together with the cushioning materials into the hollow part of the pillow part.
【０００７】[0007]
【作用】異硬度裸ヘッドレストは、枕部の頭部接触側内
面とそれと相対するインサート表面との間に存在する空
間によって、枕部の頭部接触側が他部よりもたわみ易く
なるため、その部分が他部より柔らかくなる。しかも、
その空間が枕部内にあって、空間と枕部表面との間に発
泡体が介在するため、枕部の頭部接触面の硬さ変化が緩
やかなものになる。さらに、枕部の表面には異硬度部材
等のような異物が存在しないため、枕部表面に段差、溝
を生じず、その段差、溝に起因するしわ等が表皮材に発
生することもない。また、枕部を構成する発泡体とは硬
さの異なるクッション材を前記枕部内の空間に挿入した
場合には、そのクッション材の硬さにより枕部の頭部接
触面の硬さを所望のものに調整できる。一方、異硬度裸
ヘッドレストの製造方法にあっては、枕部内にインサー
トの挿入埋設用の中空部を形成する所定形状の突型が、
枕部の頭部接触側内面を形成する表面において、その枕
部の頭部接触側内面と相対するインサートの表面よりも
凸形状になっているため、その凸形状部により枕部の頭
部接触側内面と埋設インサートの表面間に前記空間が形
成される。また、インサートを枕部内の中空部に挿入す
る際、あらかじめ枕部の頭部接触側内面と相対するイン
サートの表面に所定硬さのクッション材を固定しておけ
ば、そのインサートの挿入とともに枕部内の前記空間に
クッション材を挿入でき、枕部の頭部接触面が所望硬さ
からなる前記異硬度裸ヘッドレストが得られる。[Function] With bare headrests of different hardness, the head contact side of the pillow part is more flexible than other parts due to the space that exists between the inner surface of the pillow part on the head contact side and the opposing insert surface. becomes softer than other parts. Moreover,
Since the space is located within the pillow and the foam is interposed between the space and the surface of the pillow, the change in hardness of the head contacting surface of the pillow becomes gradual. Furthermore, since there are no foreign substances such as materials of different hardness on the surface of the pillow, there are no steps or grooves on the surface of the pillow, and wrinkles, etc. caused by the steps or grooves do not occur on the skin material. . Furthermore, if a cushioning material having a hardness different from that of the foam forming the pillow part is inserted into the space within the pillow part, the hardness of the head contacting surface of the pillow part can be adjusted to the desired hardness depending on the hardness of the cushioning material. Can be adjusted to anything. On the other hand, in a method for manufacturing a bare headrest with different hardness, a protrusion with a predetermined shape that forms a hollow part for inserting and embedding an insert in the pillow part,
The surface that forms the inner surface of the pillow on the head contact side is more convex than the surface of the insert that faces the inner surface of the pillow on the head contact side. The space is formed between the inner side surface and the surface of the buried insert. In addition, when inserting an insert into the hollow part of the pillow part, if a cushioning material of a specified hardness is fixed in advance to the surface of the insert that faces the inner surface of the pillow part on the head contact side, the inner surface of the pillow part will be filled with the insertion of the insert. A cushioning material can be inserted into the space, and the bare headrest with different hardness can be obtained in which the head contacting surface of the pillow part has a desired hardness.
【０００８】[0008]
【実施例】以下本発明の実施例について説明する。図１
は本発明の一実施例にかかる異硬度裸ヘッドレストの一
部切り欠き斜視図である。異硬度裸ヘッドレスト２４は
、ポリウレタン発泡体等の発泡体からなる枕部２６と、
その枕部２６内に一部が挿入されたインサート２８とか
らなり、その枕部の頭部接触側内面２７と、その内面２
７と相対するインサート表面２９との間に空間３０を有
するものである。
枕部２６は、底面にインサート挿入用の開口部３２が形
成され、その開口部３２に続いて中空部３４が内部に形
成されている。インサート挿入用の開口部３２は、イン
サートを挿入するための入り口であるとともに、インサ
ート２８の取付用スティ３６を枕部底面から外部へ突出
させるためのものである。また中空部３４は、インサー
ト２８の一部が挿入埋設可能な大きさからなり、かつ頭
部接触側の内面２７が凹形状に窪んでいて、その窪みが
前記空間３０を形成している。枕部内の空間３０を構成
する頭部接触側内面２７とインサートの表面２９との間
隔は、枕部２６を構成する発泡体の硬さ、あるいは形状
等によって適宜の値に設定される。[Examples] Examples of the present invention will be described below. Figure 1
1 is a partially cutaway perspective view of a bare headrest with different hardness according to an embodiment of the present invention; FIG. The bare headrest 24 with different hardness includes a pillow part 26 made of a foam such as polyurethane foam,
It consists of an insert 28 partially inserted into the pillow part 26, an inner surface 27 on the head contact side of the pillow part, and an inner surface 27 of the pillow part.
7 and the opposing insert surface 29 have a space 30 between them. The pillow part 26 has an opening 32 for inserting an insert formed in the bottom surface thereof, and a hollow part 34 is formed inside the pillow part 26 following the opening 32. The insert insertion opening 32 serves as an entrance for inserting the insert, and also allows the mounting stay 36 of the insert 28 to protrude from the bottom surface of the pillow portion to the outside. Further, the hollow portion 34 has a size such that a part of the insert 28 can be inserted therein, and the inner surface 27 on the head contact side is recessed in a concave shape, and the recess forms the space 30. The distance between the head-contact side inner surface 27 constituting the space 30 in the pillow part and the surface 29 of the insert is set to an appropriate value depending on the hardness or shape of the foam constituting the pillow part 26.
【０００９】一方インサート２８は、枕部２６の中空部
３４に挿入されて枕部２６内に埋設される埋設部３８と
、枕部２６底面から突出して座席への取り付けに利用さ
れるスティ３６とからなる。インサートの埋設部３８は
、プラスチック製または金属製の中空箱状または板状と
され、必要に応じて枕部の高さ調節機構、角度調節機構
が内蔵される。またスティ３６は、中空、または中実の
金属パイプからなり、必要に応じて座席に設けられるク
リップと係合する高さ調節用の切り欠きが適宜パイプの
側面に形成されている。On the other hand, the insert 28 includes a buried portion 38 that is inserted into the hollow portion 34 of the pillow portion 26 and buried within the pillow portion 26, and a stay 36 that protrudes from the bottom surface of the pillow portion 26 and is used for attachment to the seat. Consisting of The buried portion 38 of the insert is made of plastic or metal and has a hollow box shape or plate shape, and has a built-in height adjustment mechanism and angle adjustment mechanism as required. The stay 36 is made of a hollow or solid metal pipe, and a notch for height adjustment that engages with a clip provided on the seat as necessary is formed on the side of the pipe.
【００１０】図２は本発明の別の実施例にかかる異硬度
裸ヘッドレストの一部切り欠き斜視図である。その異硬
度裸ヘッドレスト４０は、発泡体からなる枕部４２と、
その枕部４２内の中空部４４に前記実施例の空間３０と
同様の空間４６を残して一部が挿入されたインサート４
７と、その空間４６を満たすように挿入された所定硬さ
のクッション材４８とからなる。クッション材４８は、
軟質ポリウレタン発泡体のスラブ等からなるもので、通
常枕部４２を構成する発泡体よりも柔らかいもので構成
される。なお、インサート４７は、枕部４２の弾性変形
を利用して枕部４２底面の開口部５０から枕部４２内に
挿入されたものである。FIG. 2 is a partially cutaway perspective view of a bare headrest with different hardness according to another embodiment of the present invention. The bare headrest 40 with different hardness includes a pillow part 42 made of foam;
The insert 4 is partially inserted into the hollow part 44 in the pillow part 42, leaving a space 46 similar to the space 30 in the above embodiment.
7 and a cushion material 48 of a predetermined hardness inserted so as to fill the space 46. The cushion material 48 is
It is made of a slab of soft polyurethane foam or the like, which is softer than the foam that normally makes up the pillow part 42. Note that the insert 47 is inserted into the pillow part 42 through the opening 50 on the bottom surface of the pillow part 42 by utilizing the elastic deformation of the pillow part 42.
【００１１】次に前記異硬度裸ヘッドレストの製造方法
について説明する。図３は、その異硬度裸ヘッドレスト
の製造時を示す成形型の断面図、図４は枕部内にインサ
ートを挿入する際の断面図である。成形型５２は、二つ
の分割型からなる下型５４と、後に詳述する所定形状の
突型５６と、その突型５６をキャビティ５８内に突出さ
せて保持する上型６０とからなる。そのようにしてなる
成形型５２のキャビティ５８にポリウレタン発泡原料等
の液状発泡原料５３を注入し、内部が中空の発泡体から
なる図４に示す枕部６０を発泡形成し、その枕部６０を
成形型５２から取り出した後に、インサート６１の一部
を枕部６０底面のインサート挿入用の開口部６２から内
部の中空部６３に挿入埋設して、所望の異硬度裸ヘッド
レストを製造する。Next, a method of manufacturing the bare headrest with different hardness will be explained. FIG. 3 is a cross-sectional view of the mold when manufacturing the bare headrest with different hardness, and FIG. 4 is a cross-sectional view when inserting the insert into the pillow part. The mold 52 consists of a lower mold 54 which is made up of two divided molds, a protruding mold 56 having a predetermined shape which will be described in detail later, and an upper mold 60 that projects and holds the protruding mold 56 into the cavity 58. A liquid foaming raw material 53 such as a polyurethane foaming raw material is injected into the cavity 58 of the mold 52 thus formed, and a pillow part 60 shown in FIG. After being taken out from the mold 52, a part of the insert 61 is inserted and embedded into the internal hollow part 63 through the insert insertion opening 62 on the bottom surface of the pillow part 60 to manufacture a desired bare headrest with different hardness.
【００１２】前記突型５６は、異硬度裸ヘッドレストの
枕部６０内にインサート６１埋設用の中空部６３を形成
するとともに、枕部６０の頭部接触側内面６４とそれと
相対するインサート表面６６間に空間６８を形成するた
め、さらには枕部底面７０にインサート挿入用の開口部
６２を形成するためのものである。突型５６の形状は、
枕部６０内に挿入埋設されるインサートの埋設部７２と
ほぼ同じ形状からなるが、枕部の頭部接触側内面６４を
形成する突型の表面７４については、枕部の頭部接触側
内面と相対するインサートの表面６６よりも凸形状にさ
れ、その凸形状部７６により前記枕部内の空間６８を形
成するようになっている。凸形状部７６の具体的形状は
、枕部の形状、枕部を構成する発泡体の厚み、および枕
部に埋設されるインサートの形状等に応じて最適形状に
される。なお突型５６は、本実施例のように上型と一体
に設けることもできるが、中入れ子のように上型と下型
との間に設けることもできる。The protrusion 56 forms a hollow part 63 for embedding the insert 61 in the pillow part 60 of the bare headrest of different hardness, and also forms a space between the inner surface 64 on the head contact side of the pillow part 60 and the insert surface 66 facing thereto. This is to form a space 68 in the pillow part and further to form an opening 62 for inserting an insert in the bottom surface 70 of the pillow part. The shape of the protrusion 56 is
It has almost the same shape as the embedded part 72 of the insert inserted and buried in the pillow part 60, but the protruding surface 74 forming the head contact side inner surface 64 of the pillow part is different from the head contact side inner surface of the pillow part. The insert has a convex shape than the surface 66 of the insert facing the insert, and the convex portion 76 forms a space 68 within the pillow portion. The specific shape of the convex portion 76 is optimized depending on the shape of the pillow, the thickness of the foam forming the pillow, the shape of the insert to be embedded in the pillow, and the like. Note that the projecting mold 56 can be provided integrally with the upper mold as in this embodiment, but it can also be provided between the upper mold and the lower mold like a nest.
【００１３】また、枕部の頭部接触側内面６４と相対す
るインサートの埋設部７２表面６６に、あらかじめ枕部
を構成する発泡体とは硬さの異なるクッション材（図示
せず）を粘着テープ等で固定し、そのインサートをクッ
ション材とともに枕部内の中空部６３に挿入埋設するよ
うにすれば、前記枕部内の空間６８に所定硬さのクッシ
ョン材が挿入された異硬度裸ヘッドレストが得られる。[0013] Also, a cushioning material (not shown) having a hardness different from that of the foam constituting the pillow part is attached with adhesive tape to the surface 66 of the buried part 72 of the insert, which faces the inner surface 64 on the head contact side of the pillow part. If the insert is inserted and buried in the hollow part 63 in the pillow part together with the cushioning material, a bare headrest with different hardness in which the cushioning material of a predetermined hardness is inserted into the space 68 in the pillow part can be obtained. .
【００１４】[0014]
【発明の効果】本発明の異硬度裸ヘッドレストは前記の
ように、枕部の頭部接触側内面とインサート表面間に形
成した空間あるいはその空間に挿入したクッション材に
より、枕部表面の硬さを変化させる構成からなり、枕部
外面には何等異硬度部材が存在しないため、その枕部表
面の硬さ境界部で段差、溝等を生じることがなく、表皮
材にしわ等が発生するのを防止できる。また、頭部と接
する枕部表面に異硬度部材を設けて枕部表面の硬さを直
接変化させたものとは異なり、枕部内の空間あるいはそ
の空間に挿入したクッション材により間接的に枕部表面
の硬さを変化させたものであるため、その硬さ変化も緩
やかになり、硬さ境界部での違和感を防止することもで
きる。一方、異硬度裸ヘッドレストの製造方法にあって
は、従来硬さ変化を緩やかにするため必要とされた面倒
な異硬度部材の裁断が不用になり、また枕部表面に正確
に異硬度部材を貼着する必要もないため、異硬度裸ヘッ
ドレストの製造作業がきわめて簡単になる効果がある。Effects of the Invention As described above, the bare headrest with different hardness of the present invention can reduce the hardness of the surface of the pillow by the space formed between the inner surface of the pillow on the head contact side and the insert surface, or by the cushioning material inserted into the space. Since there are no members of different hardness on the outer surface of the pillow, there will be no steps, grooves, etc. at the hardness boundaries of the pillow surface, and wrinkles will not occur in the skin material. can be prevented. In addition, unlike those that directly change the hardness of the pillow surface by providing a member with different hardness on the pillow surface that contacts the head, this method indirectly changes the hardness of the pillow surface by using the space inside the pillow or the cushioning material inserted into that space. Since the surface hardness is changed, the change in hardness is also gradual, and it is possible to prevent discomfort at the hardness boundary. On the other hand, the method for manufacturing bare headrests with different hardness eliminates the need for the troublesome cutting of different hardness members that was conventionally required to make the change in hardness gradual, and it also eliminates the need to accurately cut different hardness members on the pillow surface. Since there is no need for pasting, the manufacturing process for bare headrests with different hardness becomes extremely simple.
【図１】本発明の一実施例にかかる異硬度裸ヘッドレス
トの一部切り欠き斜視図である。FIG. 1 is a partially cutaway perspective view of a bare headrest with different hardness according to an embodiment of the present invention.
【図２】本発明の別の実施例にかかる異硬度裸ヘッドレ
ストの一部切り欠き斜視図である。FIG. 2 is a partially cutaway perspective view of a bare headrest with different hardness according to another embodiment of the present invention.
【図３】本発明の異硬度裸ヘッドレストの製造方法にか
かる一実施例を示す断面図である。FIG. 3 is a sectional view showing an embodiment of the method for manufacturing a bare headrest with different hardness according to the present invention.
【図４】本発明の異硬度裸ヘッドレストの製造方法にか
かる一実施例において、枕部の中空部にインサートを挿
入する際を示す断面図である。FIG. 4 is a sectional view illustrating inserting an insert into a hollow part of a pillow part in an embodiment of the method for manufacturing a bare headrest with different hardness according to the present invention.
【図５】従来の異硬度裸ヘッドレストの断面図である。FIG. 5 is a sectional view of a conventional bare headrest with different hardness.
【図６】従来の異硬度裸ヘッドレストの製造方法を示す
断面図である。FIG. 6 is a cross-sectional view showing a conventional method for manufacturing a bare headrest with different hardness.
２６ 枕部
２７ 枕部の頭部接触側内面
２８ インサート
２９ インサート表面
３０ 空間
３４ 中空部４２ 枕部
４４
中空部４６ 空間
４７ インサート
４８ クッション材
５２ 成形型５６ 突型
５８
キャビティ６６ インサートの表面
７４ 枕部の頭部接触側内面を形成する突型の表
面７６ 突型表面の凸形状部26 Pillow part
27 Inner surface on the head contact side of the pillow part 28 Insert
29 Insert surface 30 Space
34 Hollow part 42 Pillow part
44
Hollow part 46 space
47 Insert 48 Cushion material
52 Molding mold 56 Projection mold
58
Cavity 66 Insert surface 74 Projected surface 76 forming the head contact side inner surface of the pillow portion Convex portion of the projecting surface
Claims (4)
形成された中空部に一部が挿入されたインサートとから
なる異硬度裸ヘッドレストにおいて、枕部の頭部接触側
内面と、それと相対するインサート表面との間に空間を
設けたことを特徴とする異硬度裸ヘッドレスト。Claim 1: A bare headrest with different hardness comprising a pillow part made of foam and an insert partially inserted into a hollow part formed in the pillow part, wherein the inner surface of the pillow part on the head contact side; A bare headrest with different hardness characterized by a space provided between opposing insert surfaces.
発泡体とは硬さの異なるクッション材を挿入してなる異
硬度裸ヘッドレスト。2. A bare headrest with different hardness, in which a cushioning material having a hardness different from that of the foam of the pillow part is inserted into the space according to claim 1.
ャビティ内に突出させて保持し、そのキャビティ内に液
状発泡原料を注入し発泡させて内部が中空の枕部を形成
し、その枕部の中空部にインサートの一部を挿入するこ
とにより異硬度裸ヘッドレストを製造する方法において
、枕部の頭部接触側内面を形成する突型の表面を、枕部
の頭部接触側内面と相対するインサートの表面よりも凸
形状にすることを特徴とする異硬度裸ヘッドレストの製
造方法。3. A protruding mold having a predetermined shape is projected and held in a cavity of the mold, and a liquid foaming material is injected into the cavity and foamed to form a hollow pillow part. In a method of manufacturing a bare headrest with different hardness by inserting a part of an insert into a hollow part of A method for manufacturing a bare headrest with different hardness, characterized by making the surface of the opposing insert more convex.
側内面と相対するインサートの表面に、枕部を構成する
発泡体とは硬さの異なるクッション材を固定して、その
インサートをクッション材とともに枕部の中空部に挿入
するようにした異硬度裸ヘッドレストの製造方法。4. A cushioning material having a hardness different from that of the foam constituting the pillow part is fixed to the surface of the insert that faces the inner surface on the head contact side of the pillow part according to claim 3, and the insert A method for producing a bare headrest with different hardness, in which the headrest is inserted together with a cushioning material into a hollow part of a pillow part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03093017A JP3117743B2 (en) | 1991-03-29 | 1991-03-29 | Manufacturing method of different hardness bare headrest |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03093017A JP3117743B2 (en) | 1991-03-29 | 1991-03-29 | Manufacturing method of different hardness bare headrest |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04303402A true JPH04303402A (en) | 1992-10-27 |
| JP3117743B2 JP3117743B2 (en) | 2000-12-18 |
Family
ID=14070697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03093017A Expired - Fee Related JP3117743B2 (en) | 1991-03-29 | 1991-03-29 | Manufacturing method of different hardness bare headrest |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3117743B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7066544B2 (en) * | 2004-09-23 | 2006-06-27 | Baton Digital Electronic Tech. Co., Ltd. | Headrest mounting structure |
| WO2017169351A1 (en) * | 2016-03-29 | 2017-10-05 | 株式会社カネカ | Mmethod for manufacturing foaming composite molding, in-mold foaming molding unit, foaming composite molding, and mold for foaming composite molding |
| WO2017169350A1 (en) * | 2016-03-29 | 2017-10-05 | 株式会社カネカ | Foamed composite molding and method for manufacturing foamed composite molding |
-
1991
- 1991-03-29 JP JP03093017A patent/JP3117743B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7066544B2 (en) * | 2004-09-23 | 2006-06-27 | Baton Digital Electronic Tech. Co., Ltd. | Headrest mounting structure |
| WO2017169351A1 (en) * | 2016-03-29 | 2017-10-05 | 株式会社カネカ | Mmethod for manufacturing foaming composite molding, in-mold foaming molding unit, foaming composite molding, and mold for foaming composite molding |
| WO2017169350A1 (en) * | 2016-03-29 | 2017-10-05 | 株式会社カネカ | Foamed composite molding and method for manufacturing foamed composite molding |
| JPWO2017169351A1 (en) * | 2016-03-29 | 2019-02-07 | 株式会社カネカ | Method for producing foam composite molded body, in-mold foam molded body unit, foam composite molded body, and mold for foam composite molding |
| JPWO2017169350A1 (en) * | 2016-03-29 | 2019-02-14 | 株式会社カネカ | Foamed composite molded body and method for producing foamed composite molded body |
| US10974421B2 (en) | 2016-03-29 | 2021-04-13 | Kaneka Corporation | Foamed composite molding and method for manufacturing foamed composite molding |
| US11077588B2 (en) | 2016-03-29 | 2021-08-03 | Kaneka Corporation | Method for manufacturing foaming composite molding, in-mold foaming molding unit, foaming composite molding, and mold for foaming composite molding |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3117743B2 (en) | 2000-12-18 |
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