JPH0249952B2 - - Google Patents
Info
- Publication number
- JPH0249952B2 JPH0249952B2 JP61016851A JP1685186A JPH0249952B2 JP H0249952 B2 JPH0249952 B2 JP H0249952B2 JP 61016851 A JP61016851 A JP 61016851A JP 1685186 A JP1685186 A JP 1685186A JP H0249952 B2 JPH0249952 B2 JP H0249952B2
- Authority
- JP
- Japan
- Prior art keywords
- seat
- weir
- cushion material
- double
- belt
- 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 - Lifetime
Links
- 239000000463 material Substances 0.000 claims description 47
- 239000006260 foam Substances 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 8
- 238000005187 foaming Methods 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 3
- 235000019589 hardness Nutrition 0.000 description 17
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010097 foam moulding Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 229920005862 polyol Polymers 0.000 description 2
- 150000003077 polyols Chemical class 0.000 description 2
- 230000036544 posture Effects 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- -1 aromatic isocyanate Chemical class 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000012970 tertiary amine catalyst Substances 0.000 description 1
- CYRMSUTZVYGINF-UHFFFAOYSA-N trichlorofluoromethane Chemical compound FC(Cl)(Cl)Cl CYRMSUTZVYGINF-UHFFFAOYSA-N 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
［産業上の利用分野］
本発明は自動二・三輪車のダブルシート用クツ
シヨン材の製造方法に係り、特に前席と後席の硬
さの異なるダブルシート用クツシヨン材の製造方
法に関する。
［従来の技術］
従来、ダブルシートにおいては、運転者が着座
する前席と後乗用者が着座する後席とは、互いに
干渉することがないようにすることが一つの目的
されているが、単に前席と後席の干渉を防止する
だけでなく、乗車の際に常に塔乗され使用される
前席と、後乗用者がいる場合に使用される後席と
ではクツシヨン材の耐久性、クツシヨン性能等に
おいて異なることが望ましい。
例えば前席と後席の干渉を避けるために実公昭
57−3206号公報のように、一体成形されたクツシ
ヨン材の略中央（運転者用部分と後乗用者用部分
の境界あたり）に前席と後席を絶縁する切込みを
設け、両者が干渉しないように形成することが提
案されている。
一方、自動二・三輪車の操縦の要素として、ラ
イデイングポジシヨンが要求されるが、このライ
デイングポジシヨンに関係するのがシートの役割
であり、例えばコーナーリングひとつにしても、
様々な姿勢を取る必要があり、このような姿勢を
取るときに膝・腿（股）部に力を入れてシートを
挟持して車体を操作する。
しかし、操縦性だけに着目すると、乗心地を損
なうことになり、シート本来の役割を果たすこと
ができないことになる。特に後乗用者において著
しく不都合である。
そこで、前席と後席に硬さの異なるクツシヨン
材を接着材等で接合積層して形成することが知ら
れている。
またダブルシートにおいては、後乗用者がつか
まるベルトを前席と後席の間に装着することが多
く、このベルトは、ライダー着座時の異和感をな
くすため、前席と後席の間に溝を形成して、該溝
に入るように形成されている。
［発明が解決しようとする問題点］
接着材によつて、硬度の異なるクツシヨン材を
接合積層して形成する上記技術は、製造工程数の
増加を招き、運転中における応力の変化等によつ
て接合面の剥れ等が生じ易い。
また実公昭57−3206号公報で提案される技術
は、前席と後席のクツシヨン材が同一のものとな
るという不都合がある。
本発明は前席と後席で硬さの異なる一体となつ
たダブルシート用クツシヨン材の製造方法を提供
するもので、かかるクツシヨン材はダブルシート
における操縦性と乗り心地の双方の要求を満足す
るシートとすることができる。
［問題点を解決するための手段及び作用］
本発明のダブルシート用クツシヨン材の製造方
法は、前席と後席の間にベルトを配置するための
溝を有するダブルシート用クツシヨン材の製造方
法において、前席と後席の境界部に相当するキヤ
ビテイ内に、ベルトを配置する溝を形成するため
の堰が設けられた金型を用いて、前席を形成する
ために前記堰と前席側を形成するキヤビテイ側壁
との間に第１の発泡体を形成する第１の材料を入
れ、後席を形成するために前記堰と後席を形成す
るキヤビテイ側壁の間に第１の材料より軟らかい
発泡体を形成する第２の材料をそれぞれ入れ、前
記金型を型締めして同時発泡成形により一体成形
したことを特徴とするものである。
また堰の幅をベルトの幅より若干大きく前席と
後席が干渉しない範囲で形成すると良い。このよ
うに、ダブルシート用クツシヨン材を製造するの
に、前席と後席の境界部に相当するキヤビテイ内
に、ベルトを配置する溝を形成するための堰が設
けられた金型を用いて、この堰を利用して、ライ
ダーの着座する前席は硬めの発泡体を形成し操縦
に最適な硬さのクツシヨン材として、後席に着座
する後乗用者にはライダーの着座する前席より軟
らかめのクツシヨン材とすることができるが、本
発明方法によれば、クツシヨンの硬さを異ならせ
るために、従来の金型をそのまま利用することが
できる。そして、本発明方法によつて製造された
ダブルシート用クツシヨン材は、前席と後席の間
にベルトを配置するための溝を利用しているの
で、クツシヨン材の硬度が変化する部分は、着座
に利用されず、異和感なく、また硬度の異なる部
分に溝が形成されるために、色分け等によらなく
ても、硬度差が判別できるダブルシート用クツシ
ヨン材を提供することができる。
また堰の幅をベルトの幅より若干大きく前席と
後席が干渉しない範囲で形成すると、前席或は後
席に着座することによつて干渉されることを大幅
に減少させることができるダブルシート用クツシ
ヨン材を提供することができる。
［実施例］
以下本発明の一実施例を図面に基づいて説明す
る。
第１図Ａはダブルシート用クツシヨン材の斜視
図であり、第１図Ｂは発泡前の上金型が開いた状
態の断面図、第１図Ｃは発泡が完了した時点の金
型の断面図である。
本例において、ダブルシート用クツシヨン材１
を形成するには、第１図Ｂで示されるようなキヤ
ビテイ（下型）４とコアー（上型）５を用いてお
り、該キヤビテイ４内の前席Ｆと後席Ｒの境界部
に相当する位置に堰６を形成する。該堰６の幅は
ベルト（図示せず）の幅より若干大きめとし、高
さは、前席Ｆと後席Ｒが干渉しない範囲とする。
そしてキヤビテイ４内の側壁４ａと堰６との間
に、硬い発泡体を形成する第１の材料Ａを入れ、
キヤビテイ４の側壁４ｂの間に第１の材料より軟
らかい発泡体を形成する第２の材料Ｂをそれぞれ
入れ、型締めして発泡成形する。
成形は、第１図Ｃで示されるように、材料Ａ及
び材料Ｂが発泡してキヤビテイ４内を上方に膨張
して、発泡体２及び３を形成するが、この発泡体
２及び３の境界は一体となり、何ら接着材を必要
としないものとなる。
成形によつて一体となつたクツシヨン材１は、
第１図Ａで示されるように、溝７を境にして、前
席Ｆに該当する発泡体２と後席Ｒに該当する発泡
体３では硬さが異なるものとなる。また硬度の異
なる部分に溝が形成されるために、色分等によら
なくても硬度差が判別できる。
本発明によつて用いられる発泡体の材料は、例
えばポリウレタンであるならば、水酸基価24〜45
のポリエーテルポリオールを50〜100重量部と、
水酸基価24〜30のポリマーポリオールを０〜50重
量部とを所定割合で用い、水酸基価500〜1600の
アミン系架橋剤と、水及び第３級アミン触媒を所
望量加え、NCO％が約10〜48％である芳香族系
イソシアネートブレンド品を相当量加える。さら
に場合によつてシリコン界面活性剤、フレオン−
11等を加えたものを用いる。
以下にポリウレタン発泡体にる例を示す。
例
予めキヤビテイ４は50℃±５℃で予熱されてお
り、該キヤビテイ４の側壁４ａと堰６の間に、下
記表１で現わされる、硬い発泡体を形成する第１
の材料（下記Ａ）を入れ、キヤビテイ４の側壁４
ｂと堰６の間に上記第１の材料より軟らかい発泡
体を形成する第２の材料（下記Ｂ）をそれぞれ入
れる。そして略同時に発泡させる。硬化は型を閉
じてから80℃で約８分間行なつた。
[Industrial Field of Application] The present invention relates to a method of manufacturing a cushion material for a double seat of a motorcycle or tricycle, and more particularly to a method of manufacturing a cushion material for a double seat in which the front and rear seats have different hardnesses. [Prior Art] Conventionally, in a double seat, one of the objectives is to prevent the front seat where the driver is seated and the rear seat where the rear passenger is seated from interfering with each other. In addition to simply preventing interference between the front and rear seats, the durability of the cushion material for the front seats, which are always used while riding, and the rear seats, which are used when there are rear passengers, is It is desirable that they differ in terms of cushion performance, etc. For example, to avoid interference between the front and rear seats,
As in Publication No. 57-3206, a notch is provided approximately in the center of the integrally molded cushion material (around the boundary between the driver's part and the rear passenger's part) to insulate the front and rear seats, so that the two do not interfere with each other. It has been proposed to form the On the other hand, riding position is required as an element for maneuvering motorcycles and tricycles, and the role of the seat is related to this riding position.For example, even when cornering,
It is necessary to take various postures, and when taking these postures, the driver puts pressure on his knees and thighs to grip the seat and operate the vehicle. However, focusing only on maneuverability will impair ride comfort and the seat will not be able to fulfill its original role. This is particularly inconvenient for rear passengers. Therefore, it is known to form cushion materials of different hardness on the front seat and the rear seat by bonding and laminating them using an adhesive or the like. In addition, in double seats, a belt for rear passengers to hold onto is often installed between the front and rear seats. It is formed to form a groove and fit into the groove. [Problems to be Solved by the Invention] The above-mentioned technology of bonding and laminating cushion materials of different hardness using an adhesive increases the number of manufacturing steps, and causes problems such as changes in stress during operation. Peeling of the joint surface is likely to occur. Furthermore, the technology proposed in Japanese Utility Model Publication No. 57-3206 has the disadvantage that the cushion material for the front and rear seats is the same. The present invention provides a method for manufacturing a cushion material for a double seat in which the front and rear seats have different hardness, and such cushion material satisfies the requirements for both maneuverability and ride comfort in the double seat. It can be a sheet. [Means and effects for solving the problems] A method for manufacturing a cushion material for a double seat according to the present invention is a method for manufacturing a cushion material for a double seat having a groove for arranging a belt between a front seat and a rear seat. In order to form a front seat, a mold with a weir for forming a groove for placing a belt is used in the cavity corresponding to the boundary between the front seat and the rear seat. a first material forming a first foam between said weir and a cavity side wall forming a rear seat; and a first material forming a first foam between said weir and a cavity side wall forming a rear seat. It is characterized in that a second material forming a soft foam is respectively put in, the mold is clamped, and the mold is integrally molded by simultaneous foam molding. It is also best to make the width of the weir slightly larger than the width of the belt so that it does not interfere with the front and rear seats. In this way, to manufacture cushion materials for double seats, a mold is used that has a weir in the cavity that corresponds to the boundary between the front and rear seats to form a groove for placing the belt. By using this weir, the front seat where the rider sits is made of a hard foam material that has the optimal hardness for maneuvering. Although a softer cushion material can be used, according to the method of the present invention, conventional molds can be used as they are in order to vary the hardness of the cushion. Since the cushion material for a double seat manufactured by the method of the present invention utilizes a groove for arranging the belt between the front seat and the rear seat, the part where the hardness of the cushion material changes is It is possible to provide a cushion material for a double seat that is not used for seating, does not give a strange feeling, and allows the difference in hardness to be discriminated without color-coding or the like because grooves are formed in parts with different hardness. In addition, if the width of the weir is made slightly larger than the width of the belt so that it does not interfere with the front and rear seats, it is possible to significantly reduce the interference caused by sitting in the front or rear seats. A cushion material for a seat can be provided. [Example] An example of the present invention will be described below based on the drawings. Figure 1A is a perspective view of the cushion material for double sheets, Figure 1B is a cross-sectional view of the upper mold before foaming is opened, and Figure 1C is a cross-sectional view of the mold when foaming is completed. It is a diagram. In this example, cushion material 1 for double seat
To form this, a cavity (lower mold) 4 and a core (upper mold) 5 are used as shown in FIG. A weir 6 is formed at the location. The width of the weir 6 is slightly larger than the width of the belt (not shown), and the height is within a range where the front seat F and the rear seat R do not interfere with each other. Then, a first material A forming a hard foam is placed between the side wall 4a and the weir 6 in the cavity 4,
A second material B that forms a foam that is softer than the first material is placed between the side walls 4b of the cavity 4, and the molds are clamped to perform foam molding. In the molding process, as shown in FIG. are integrated and do not require any adhesive. The cushion material 1 integrated by molding is
As shown in FIG. 1A, the foam 2 corresponding to the front seat F and the foam 3 corresponding to the rear seat R differ in hardness with the groove 7 as a boundary. Furthermore, since grooves are formed in portions of different hardness, differences in hardness can be determined without relying on color classification or the like. For example, if the material of the foam used in the present invention is polyurethane, the hydroxyl value is 24 to 45.
50 to 100 parts by weight of polyether polyol,
Using 0 to 50 parts by weight of a polymer polyol having a hydroxyl value of 24 to 30 in a predetermined ratio, adding an amine crosslinking agent having a hydroxyl value of 500 to 1600, water and a tertiary amine catalyst in desired amounts, the NCO% is approximately 10. Add a significant amount of an aromatic isocyanate blend that is ~48%. In addition, silicone surfactants, freon-
11 etc. is used. Examples of polyurethane foams are shown below. Example: The cavity 4 is preheated to 50°C ± 5°C, and between the side wall 4a of the cavity 4 and the weir 6, a hard foam is formed as shown in Table 1 below.
Put the material (A below) into the side wall 4 of cavity 4.
A second material (B below) that forms a softer foam than the first material is placed between B and the weir 6, respectively. Then, they are foamed almost simultaneously. Curing was carried out at 80° C. for about 8 minutes after the mold was closed.
【表】 上記材料によつて得られたクツシヨン材は【table】 The cushion material obtained using the above materials is
【表】
であつた。
このように、接着材を使用しない一体品であり
ながら、硬度の異なるクツシヨン材を得ることが
できる。
［発明の効果］
本発明のダブルシート用クツシヨン材の製造方
法によれば、ベルトを配置する溝を形成するため
の堰が設けられた金型を利用しているので、クツ
シヨンの硬さを異ならせるために特別な金型や、
接着材、インサート材等が不要で、従来の金型を
そのまま利用することができる。また本発明方法
によつて製造されたダブルシート用クツシヨン材
は、前席と後席の間にベルトを配置するための溝
を利用しているので、クツシヨン材の硬度が変化
する部分は、着座に利用されず、異和感がなく、
また硬度の異なる部分に溝が形成されるために、
色分け等によらなくても、硬度差が判別できるダ
ブルシート用クツシヨン材を提供することができ
る。
また堰の幅をベルトの幅より若干大きく前席と
後席が干渉しない範囲で形成すると、前席或は後
席に着座することによつて干渉されることを大幅
に減少させることができるダブルシート用クツシ
ヨン材を提供することができる。
なお、当然のことであるが、本発明は図示の例
に限定されるものではない。[Table] It was. In this way, cushion materials having different hardnesses can be obtained even though they are an integral product without using an adhesive. [Effects of the Invention] According to the method of manufacturing a cushion material for a double seat according to the present invention, a mold provided with a weir for forming a groove in which a belt is disposed is used, so that the hardness of the cushion can be varied. special molds and
There is no need for adhesives, insert materials, etc., and conventional molds can be used as is. Furthermore, since the cushion material for double seats manufactured by the method of the present invention utilizes a groove for arranging the belt between the front seat and the rear seat, the portion where the hardness of the cushion material changes is It is not used by people, there is no sense of incongruity,
Also, because grooves are formed in areas with different hardness,
It is possible to provide a cushion material for a double sheet in which the difference in hardness can be determined without using color coding or the like. In addition, if the width of the weir is made slightly larger than the width of the belt so that it does not interfere with the front and rear seats, it is possible to significantly reduce the interference caused by sitting in the front or rear seats. A cushion material for a seat can be provided. Note that, as a matter of course, the present invention is not limited to the illustrated example.
第１図Ａはダブルシート用クツシヨン材の斜視
図であり、第１図Ｂは発泡前の上金型が開いた状
態の断面図、第１図Ｃは発泡が完了した時点の金
型の断面図である。
１……ダブルシート用クツシヨン材、２……硬
い発泡体、３……２より軟らかい発泡体、４……
キヤビテイ、５……コアー、６……堰、Ｆ……前
席、Ｒ……後席。
Figure 1A is a perspective view of the cushion material for double sheets, Figure 1B is a cross-sectional view of the upper mold before foaming is opened, and Figure 1C is a cross-sectional view of the mold when foaming is completed. It is a diagram. 1...Cushion material for double seat, 2...Hard foam, 3...Foam softer than 2, 4...
Cavity, 5... Core, 6... Weir, F... Front seat, R... Rear seat.
Claims (1)
を有するダブルシート用クツシヨン材の製造方法
において、前席と後席の境界部に相当するキヤビ
テイ内に、ベルトを配置する溝を形成するための
堰が設けられた金型を用いて、前席を形成するた
めに前記堰と前席側を形成するキヤビテイ側壁と
の間に第１の発泡体を形成する第１の材料を入
れ、後席を形成するために前記堰と後席を形成す
るキヤビテイ側壁の間に第１の材料より軟らかい
発泡体を形成する第２の材料をそれぞれ入れ、前
記金型を型締めして同時発泡成形により一体成形
したことを特徴とするダブルシート用クツシヨン
材の製造方法。 ２ 前記堰の幅は前記ベルトの幅より若干大きく
前席と後席が干渉しない範囲で形成したことを特
徴とする特許請求の範囲第１項記載のダブルシー
ト用クツシヨン材の製造方法。[Claims] 1. In a method of manufacturing a cushion material for a double seat having a groove for arranging a belt between a front seat and a rear seat, a belt is placed in a cavity corresponding to the boundary between the front seat and the rear seat. A first foam body is formed between the weir and the cavity side wall forming the front seat side to form the front seat using a mold provided with a weir for forming a groove for arranging the front seat. A first material is placed, a second material forming a softer foam than the first material is placed between the weir and the side wall of the cavity forming the rear seat to form the rear seat, and the mold is closed. A method for producing a cushion material for a double seat, characterized in that it is integrally molded by mold clamping and simultaneous foaming molding. 2. The method for manufacturing a cushion material for a double seat according to claim 1, wherein the width of the weir is formed to be slightly larger than the width of the belt so that the front seat and the rear seat do not interfere with each other.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60-297361 | 1985-12-31 | ||
| JP29736185 | 1985-12-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62289485A JPS62289485A (en) | 1987-12-16 |
| JPH0249952B2 true JPH0249952B2 (en) | 1990-10-31 |
Family
ID=17845501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1685186A Granted JPS62289485A (en) | 1985-12-31 | 1986-01-30 | Cushion material for double seat and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62289485A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4763275B2 (en) * | 2004-12-13 | 2011-08-31 | 東洋ゴム工業株式会社 | Automotive seat cushion pad |
| JP2007083904A (en) * | 2005-09-22 | 2007-04-05 | Sekisui Plastics Co Ltd | Vehicle floor spacer |
| JP4963818B2 (en) * | 2005-09-22 | 2012-06-27 | 積水化成品工業株式会社 | Lower limb shock absorption pad for vehicle |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5911082B2 (en) * | 1976-03-16 | 1984-03-13 | キヤノン株式会社 | Scanning optical system with information beam extraction member |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5911082U (en) * | 1982-07-14 | 1984-01-24 | 東京シ−ト株式会社 | Motorcycle seat |
-
1986
- 1986-01-30 JP JP1685186A patent/JPS62289485A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5911082B2 (en) * | 1976-03-16 | 1984-03-13 | キヤノン株式会社 | Scanning optical system with information beam extraction member |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62289485A (en) | 1987-12-16 |
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