JPH08103580A - Face rigid complex pad - Google Patents
Face rigid complex padInfo
- Publication number
- JPH08103580A JPH08103580A JP6240954A JP24095494A JPH08103580A JP H08103580 A JPH08103580 A JP H08103580A JP 6240954 A JP6240954 A JP 6240954A JP 24095494 A JP24095494 A JP 24095494A JP H08103580 A JPH08103580 A JP H08103580A
- Authority
- JP
- Japan
- Prior art keywords
- pad
- area
- seat
- rigid body
- springs
- 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.)
- Pending
Links
Landscapes
- 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、各種クッション体に用
いられるウレタンフォームモールド成型体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a urethane foam molded body used for various cushion bodies.
【0002】[0002]
【従来の技術】従来より、特に自動車用シートの乗り心
地を向上させるという目的の為に、種々の方法が考案さ
れており、その中でクッション体の反発弾性操作という
ものが非常に重要となっている。従来、クッション体の
反発弾性を向上させる手段としては反発弾性の高いウレ
タン材料を用いるという配合面からの対応が主であっ
た。また、別の方法としては高反発弾性材を一体発泡或
は後加工することも行われていた。2. Description of the Related Art Conventionally, various methods have been devised for the purpose of improving the riding comfort of automobile seats, and among them, the impact resilience operation of a cushion body is very important. ing. Heretofore, as a means for improving the impact resilience of the cushion body, the main approach has been to use a urethane material having a high impact resilience from the viewpoint of compounding. Further, as another method, a high impact resilience material is integrally foamed or post-processed.
【0003】しかし、上記の様な、例えば反発性のみに
着目して配合で対応しようとした場合に、他の物性や成
型・製造方法等をも考慮して要求に合致させることは困
難であり、また金型成型用のウレタン配合という範疇で
あれば、その配合を操作したところでおのずと限界があ
り、操作対応し得る反発性は余り大きくない。又、高反
発性の物体を一体発泡、或は後加工により組み合わせた
クッション体では、高反発性材料とウレタンとの極端な
物性(剛性)の違い、若しくはウレタンとの境界面にお
ける含浸層の形成により、異物感や底付き感を感じてし
まう等の不具合が発生する場合があった。However, in the case of attempting to cope with the composition by focusing on only the resilience as described above, it is difficult to meet the requirements in consideration of other physical properties and molding / manufacturing methods. Further, in the category of urethane compounding for die molding, there is naturally a limit in operating the compounding, and the resilience that can be handled is not so large. In the case of a cushion body made by integrally foaming highly repulsive objects or combining them by post-processing, the extremely different physical properties (rigidity) between the highly repulsive material and urethane, or the formation of the impregnated layer at the interface between urethane and As a result, problems such as a feeling of foreign matter and a feeling of bottoming may occur.
【0004】本発明は、上記の様な異物感、底付き感と
いった不具合の発生無しに、面剛性板及びその形状、イ
ンサート位置を変えることによってウレタンの材質を変
えることなく、容易にパッドとしての反発弾性特性を変
え得ることが可能となったのである。According to the present invention, a pad can be easily used as a pad without changing the material of urethane by changing the surface rigidity plate and its shape and the insert position without the occurrence of the above-mentioned problems such as a feeling of foreign matter and a feeling of bottoming. It has become possible to change the impact resilience characteristics.
【0005】粘弾性特性を有するウレタンは、一般にバ
ネとダンパーのモデルに置き換えることが出来る。(図
1) 該ウレタンの上に負荷がかかった場合、実際には周辺部
とのテンション等の影響もあるが、基本的には負荷部領
域の下のウレタンが負荷に対してバネとダンパーの働き
をすることになる(図2)。即ち、図2において負荷部
領域下方の斜線部分のウレタンが、負荷面積に比例して
ウレタンのバネ剛性(バネ定数)は増加していく。一
方、ウレタンのダンピング効果は、主にウレタン内外へ
の空気の流出入抵抗によって生ずる為、サンプル形状が
変わらない限り負荷面積が変わってもバネ特性程大きく
は変わらない。Urethane, which has viscoelastic properties, can generally be replaced by a spring and damper model. (Fig. 1) When a load is applied on the urethane, it may be affected by the tension with the peripheral part, but basically, the urethane under the load part area acts as a spring and a damper against the load. It will work (Fig. 2). That is, in FIG. 2, urethane in the shaded area below the load area increases the spring rigidity (spring constant) of urethane in proportion to the load area. On the other hand, the damping effect of urethane is mainly caused by the inflow and outflow resistance of air into and out of urethane, so that the spring characteristics do not change so much even if the load area changes unless the sample shape changes.
【0006】実際、シートに用いられるウレタンを見て
も、実際にバネとして働くウレタン部は、主に着座者の
尻、もも下部に当たる部分である。従って、着座者のシ
ート接触面積よりも広い面積でシートパッドを加圧すれ
ばそのバネ特性は変わってくる。In fact, even when looking at the urethane used for the seat, the urethane portion that actually acts as a spring is mainly the buttocks of the seated person, which is the lower part of the thigh. Therefore, if the seat pad is pressed in an area larger than the seat contact area of the seated person, the spring characteristics will change.
【0007】加圧部周辺部への張力(バネの横方向への
つながり)と、ダンパーの影響を無視し、図3の様にウ
レタンをバネが並列に並んだものと仮定すると、加圧面
積の違いによりバネ定数が変わる。バネ一つのバネ定数
をKとすると、バネ一個分に相当する面積で加圧した場
合、そのバネ定数はK、n個分に相当する面積で加圧し
た場合は、nKとなる。即ち、面剛性体の面積によって
加圧するバネの個数nが変わってくることになる。[0007] Assuming that the springs are arranged in parallel as shown in Fig. 3, ignoring the influence of the damper (horizontal direction of the spring) and the tension to the peripheral part of the pressurizing part, the pressing area The spring constant changes depending on the difference. Assuming that the spring constant of one spring is K, the spring constant is K when pressure is applied in an area corresponding to one spring, and nK when pressure is applied in an area corresponding to n springs. That is, the number n of springs to be pressed changes depending on the area of the surface rigid body.
【0008】又、インサートされる面剛性体の厚さ方向
の位置によってもパッド全体としての特性は変わってく
る。この場合はバネを直列につないだ場合に相当する。
図4の様にウレタンをバネ(バネ定数=k1 )が直列に
3個、並列に3×3個配設されたモデルを仮定する。負
荷面積をバネ一個分、面剛性体面積をバネ3個分に相当
すると仮定する。尚この時面剛性板は十分な剛性を有
し、その面積下のバネを均一に押せるものとする。 (1)面剛性体が加圧表面側に置かれた場合を図5に示
す。尚、この場合、全体としてのバネ定数をK0 とす
る。Further, the characteristics of the pad as a whole also change depending on the position in the thickness direction of the surface rigid body to be inserted. This case corresponds to the case where springs are connected in series.
As shown in FIG. 4, assume a model in which three urethane springs (spring constant = k 1 ) are arranged in series and 3 × 3 pieces are arranged in parallel. It is assumed that the load area corresponds to one spring and the surface rigid body area corresponds to three springs. At this time, the surface rigid plate has sufficient rigidity so that the spring below the area can be pressed uniformly. (1) FIG. 5 shows the case where the surface rigid body is placed on the pressing surface side. In this case, the spring constant as a whole is K 0 .
【数1】 [Equation 1]
【0009】(2)面剛性体が図4のAの位置に挿入さ
れた場合を図6に示す。この場合の全体のバネ定数をK
A とする。(2) FIG. 6 shows a case where the surface rigid body is inserted at the position A in FIG. The overall spring constant in this case is K
A.
【数2】 [Equation 2]
【0010】(3)面剛性体が図4のBの位置に挿入さ
れた場合を図7に示す。この場合の全体のバネ定数をK
B とする。(3) FIG. 7 shows a case where the surface rigid body is inserted at the position B in FIG. The overall spring constant in this case is K
Let's call it B.
【数3】 (Equation 3)
【0011】(4)面剛性体が図4のCの位置又は配設
されなかった場合を図8に示す。この場合の全体のバネ
定数をKC とする。(4) FIG. 8 shows a case where the surface rigid body is not arranged at the position C in FIG. The total spring constant in this case is K C.
【数4】 [Equation 4]
【0012】よって、厚さ方向で面剛性体を異なる位置
に入れることによりパッド全体としてのバネ剛性が変わ
ってくることがわかる。即ち、加圧表面側に近い位置に
ある時程バネ剛性は高くなる。なお、面剛性材としては
特に制限はなくプレスチップ、プレスフェルト、各種プ
ラスチック板、木板類等剛性がある板ものを使用すれば
良い。Therefore, it can be seen that the spring rigidity of the pad as a whole is changed by placing the surface rigid bodies at different positions in the thickness direction. That is, the spring rigidity becomes higher as the position is closer to the pressing surface side. The surface-rigidity material is not particularly limited, and press-chips, press-felts, various types of plastic plates, wood plates, and other rigid plates may be used.
【0013】[0013]
【実施例】以下に、本発明による実施例を示す。フルフ
ォーム用HR配合で作成した500×500×100m
mのウレタンフォームのテストモールドピースに、厚み
5mmのプレスチップを表面から各々0、30、60、
100mmの位置にセットしたときの静荷重特性を図9
に、また振動特性の変化を図10にそれぞれ示した。EXAMPLES Examples according to the present invention will be shown below. 500 × 500 × 100m created with HR formulation for full foam
m 5 mm urethane foam test mold piece with a 5 mm thick press tip from the surface, 0, 30, 60,
Figure 9 shows the static load characteristics when set at the 100 mm position.
Fig. 10 shows the changes in the vibration characteristics.
【0014】なお、試験方法は、図9についてはJAS
O−B408規格「荷重試験法」により、面剛性体の位
置を変えて荷重/撓み試験を、また図10については、
JASO−B408規格「振動試験法」に準拠して加圧
板荷重50kg、全振幅5mmの条件にて行った。そし
てそれぞれの結果を示した。図9及び図10により明白
なように、ウレタン、面剛性体が共に同じであっても面
剛性体のインサート位置によってフォームのバネ剛性
(バネ定数)が変わり、その結果荷重撓み線図や振動伝
達特性が変わることがわかる。The test method is shown in JAS in FIG.
According to the O-B408 standard “load test method”, the position of the surface rigid body is changed to perform a load / deflection test.
According to the JASO-B408 standard "vibration test method", the pressure plate load was 50 kg and the total amplitude was 5 mm. And each result was shown. As is clear from FIGS. 9 and 10, even if the urethane and the surface-rigid body are the same, the spring rigidity (spring constant) of the foam changes depending on the insert position of the surface-rigid body, resulting in a load deflection diagram and vibration transmission. It can be seen that the characteristics change.
【0015】[0015]
【発明の効果】本発明は、上記の様な異物感、底付き感
といった不具合の発生無しに、面剛性板及びそのインサ
ート位置を変えることによってウレタンの材質を変える
ことなく、容易にパッドとしての荷重−撓み特性や反発
弾性特性を変えて、所望の特性に調整することが可能と
なったのである。EFFECT OF THE INVENTION The present invention can be easily used as a pad without changing the material of urethane by changing the surface rigidity plate and its insert position without the occurrence of the above-mentioned problems such as a feeling of foreign matter and a feeling of bottoming. The load-deflection characteristic and the impact resilience characteristic can be changed to adjust to desired characteristics.
【図1】通常軟質ウレタンフォーム1(a)は負荷に対
して、(b)の如くバネ2とダンパー3の働きをすると
いうモデル図。FIG. 1 is a model diagram in which a soft urethane foam 1 (a) normally acts as a spring 2 and a damper 3 as shown in (b) with respect to a load.
【図2】軟質ウレタンフォームに負荷がかかった時の該
略図を示す。FIG. 2 shows the schematic diagram when a flexible urethane foam is loaded.
【図3】軟質ウレタンフォームをバネが並列に並んだも
のと仮定した該略図を示す。FIG. 3 shows the schematic assuming flexible urethane foam with springs side-by-side.
【図4】軟質ウレタンフォームをバネが直列に3個、並
列に3×3配列された時のモデル図で、負荷面積をバネ
1個分、面剛性体面積をバネ3個分に相当すると仮定し
た図。FIG. 4 is a model diagram when three flexible urethane foam springs are arranged in series and 3 × 3 are arranged in parallel. It is assumed that the load area corresponds to one spring and the surface rigid body area corresponds to three springs. The figure.
【図5】本発明において面剛性体を加圧表面側に配置し
た場合のモデル図。FIG. 5 is a model diagram when the surface rigid body is arranged on the pressure surface side in the present invention.
【図6】本発明において面剛性体を図4においてAの位
置に挿入した場合のモデル図。FIG. 6 is a model diagram when the surface rigid body is inserted at the position A in FIG. 4 in the present invention.
【図7】本発明において面剛性体を図4においてBの位
置に挿入した場合のモデル図。FIG. 7 is a model diagram when the surface rigid body is inserted at the position B in FIG. 4 in the present invention.
【図8】本発明において面剛性体を裏面(図4において
Cの位置に挿入した場合)或は配設されなかった場合の
モデル図。FIG. 8 is a model diagram of a case where the surface rigid body is not provided on the back surface (when it is inserted at the position C in FIG. 4) or in the present invention.
【図9】本発明において面剛性体の位置を変えて荷重−
撓み試験を行った結果を示す。(JASO−B408荷
重試験法に準拠)FIG. 9 is a diagram showing the load of the present invention by changing the position of the surface rigid body.
The result of having performed the bending test is shown. (Based on JASO-B408 load test method)
【図10】本発明において面剛性体の位置を変えて振動
伝達特性の試験を行った結果を示す。(JASO−B4
08振動試験法に基づく。ただし加圧板荷重は50K
g,全振幅は5mm)FIG. 10 shows the results of a vibration transfer characteristic test conducted by changing the position of the surface rigid body in the present invention. (JASO-B4
Based on the 08 vibration test method. However, the pressure plate load is 50K
g, total amplitude is 5 mm)
【符号の説明】 1 軟質ウレタンフォーム 2 バネ 3 ダンパー 4 荷重(負荷) 5 負荷部領域(バネ及びダンパーの働き) 6 面剛性体[Explanation of symbols] 1 soft urethane foam 2 spring 3 damper 4 load (load) 5 load area (function of spring and damper) 6 surface rigid body
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成6年10月21日[Submission date] October 21, 1994
【手続補正1】[Procedure Amendment 1]
【補正対象書類名】図面[Document name to be corrected] Drawing
【補正対象項目名】図1[Name of item to be corrected] Figure 1
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図1】 FIG.
【手続補正2】[Procedure Amendment 2]
【補正対象書類名】図面[Document name to be corrected] Drawing
【補正対象項目名】図2[Name of item to be corrected] Figure 2
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図2】 [Fig. 2]
【手続補正3】[Procedure 3]
【補正対象書類名】図面[Document name to be corrected] Drawing
【補正対象項目名】図3[Name of item to be corrected] Figure 3
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図3】 [Figure 3]
【手続補正4】[Procedure amendment 4]
【補正対象書類名】図面[Document name to be corrected] Drawing
【補正対象項目名】図4[Name of item to be corrected] Fig. 4
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図4】 [Figure 4]
【手続補正5】[Procedure Amendment 5]
【補正対象書類名】図面[Document name to be corrected] Drawing
【補正対象項目名】図5[Name of item to be corrected] Figure 5
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図5】 [Figure 5]
【手続補正6】[Procedure correction 6]
【補正対象書類名】図面[Document name to be corrected] Drawing
【補正対象項目名】図6[Name of item to be corrected] Figure 6
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図6】 [Figure 6]
【手続補正7】[Procedure Amendment 7]
【補正対象書類名】図面[Document name to be corrected] Drawing
【補正対象項目名】図7[Name of item to be corrected] Figure 7
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図7】 [Figure 7]
【手続補正8】[Procedure Amendment 8]
【補正対象書類名】図面[Document name to be corrected] Drawing
【補正対象項目名】図8[Correction target item name] Figure 8
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図8】 ─────────────────────────────────────────────────────
[Figure 8] ─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成6年11月30日[Submission date] November 30, 1994
【手続補正1】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】0008[Correction target item name] 0008
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【0008】又、インサートされる面剛性体の厚さ方向
の位置によってもパッド全体としての特性は変わってく
る。この場合はバネを直列につないだ場合に相当する。
図4の様にウレタンをバネ(バネ定数=k1 )が直列に
3個、並列に3×3個配列されたモデルを仮定する。負
荷面積をバネ一個分、面剛性体面積をバネ3個分に相当
すると仮定する。尚この時面剛性板は十分な剛性を有
し、その面積下のバネを均一に押せるものとする。 (1)面剛性体が加圧表面側に置かれた場合を図5に示
す。尚、この場合、全体としてのバネ定数をK0 とす
る。Further, the characteristics of the pad as a whole also change depending on the position in the thickness direction of the surface rigid body to be inserted. This case corresponds to the case where springs are connected in series.
As shown in FIG. 4, it is assumed that three urethane springs (spring constant = k 1 ) are arranged in series and 3 × 3 pieces are arranged in parallel. It is assumed that the load area corresponds to one spring and the surface rigid body area corresponds to three springs. At this time, the surface rigid plate has sufficient rigidity so that the spring below the area can be pressed uniformly. (1) FIG. 5 shows the case where the surface rigid body is placed on the pressing surface side. In this case, the spring constant as a whole is K 0 .
【数1】 [Equation 1]
Claims (4)
において、着座者がシート座部と接触する面積よりも広
い面積を有する面剛性板状体をシートパッド内の任意の
位置に内設させることによりシートパッド全体のバネ特
性を変化せしめることを特徴とする面剛性複合体シート
パッド。1. A seat sheet for vehicles, particularly for automobiles, wherein a surface-rigid plate-like body having an area larger than an area where a seated person comes into contact with a seat portion is internally provided at an arbitrary position in a seat pad. A surface-rigid composite seat pad characterized by changing the spring characteristics of the seat pad as a whole.
軟質ウレタンフォームの成形体からなることを特徴とす
る請求項1記載の面剛性複合体シートパッド。2. The surface-rigidity composite seat pad according to claim 1, wherein the cushion pad of the seat for seat comprises a molded body of soft urethane foam.
性の強さによりパッド材を該面剛性板状体と組み合わせ
ることにより、シートパッドの全体としての硬度、反発
弾性、剛性等をコントロールするようにしたことを特徴
とする請求項1または2項記載の面剛性複合体パッド。3. The surface-stiffness plate-shaped body is a non-elastic body, and by combining a pad material with the surface-stiffness plate-shaped body due to its rigidity, the hardness, impact resilience, rigidity, etc. of the seat pad as a whole. 3. The surface-rigidity composite pad according to claim 1, wherein the surface rigidity composite pad is controlled.
000cm2 である請求項1、2又は3のいずれかに記
載の面剛性複合体パッド。4. The area of the plane-rigid plate-like body is 100 cm 2 to 2.
The surface-rigidity composite pad according to any one of claims 1, 2 and 3, having a size of 000 cm 2 .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6240954A JPH08103580A (en) | 1994-10-05 | 1994-10-05 | Face rigid complex pad |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6240954A JPH08103580A (en) | 1994-10-05 | 1994-10-05 | Face rigid complex pad |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH08103580A true JPH08103580A (en) | 1996-04-23 |
Family
ID=17067128
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6240954A Pending JPH08103580A (en) | 1994-10-05 | 1994-10-05 | Face rigid complex pad |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH08103580A (en) |
-
1994
- 1994-10-05 JP JP6240954A patent/JPH08103580A/en active Pending
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