JP6876456B2 - Manufacturing method of seat pads, vehicle seats and seat pads - Google Patents

Manufacturing method of seat pads, vehicle seats and seat pads Download PDF

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JP6876456B2
JP6876456B2 JP2017020777A JP2017020777A JP6876456B2 JP 6876456 B2 JP6876456 B2 JP 6876456B2 JP 2017020777 A JP2017020777 A JP 2017020777A JP 2017020777 A JP2017020777 A JP 2017020777A JP 6876456 B2 JP6876456 B2 JP 6876456B2
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fragile
reinforcing material
hole
pad
fragile portion
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JP2018127068A (en
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洋 大年
洋 大年
直之 柴崎
直之 柴崎
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Toyo Quality One Corp
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Description

本発明は、パッド本体に貫通孔が設けられたシートパッド、乗物用シート及びシートパッドの製造方法に関するものである。 The present invention relates to a seat pad having a through hole in the pad body, a vehicle seat, and a method for manufacturing the seat pad.

従来、自動車等の乗物用シートのシートパッドには、各種部品を取り付けるための貫通孔が設けられるものがある。パッド本体の裏面に補強材が一体化されるシートパッドに貫通孔を設けるには、パッド本体の成形時に貫通孔をパッド本体に設け、パッド本体の成形後に貫通孔の内周側の補強材を除去する方法がある(特許文献1)。 Conventionally, some seat pads for vehicle seats such as automobiles are provided with through holes for attaching various parts. In order to provide a through hole in the seat pad in which the reinforcing material is integrated on the back surface of the pad body, a through hole is provided in the pad body when the pad body is molded, and after the pad body is molded, the reinforcing material on the inner peripheral side of the through hole is provided. There is a method of removing (Patent Document 1).

実公昭58−21701号公報Jikken Sho 58-21701

しかしながら、上記従来の技術では、パッド本体の成形後に貫通孔の内周側の補強材を除去する工程が必要になるという問題点がある。 However, the above-mentioned conventional technique has a problem that a step of removing the reinforcing material on the inner peripheral side of the through hole is required after molding the pad body.

本発明は上述した問題点を解決するためになされたものであり、作業工程を簡素化できるシートパッド、乗物用シート及びシートパッドの製造方法を提供することを目的とする。 The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a seat pad, a vehicle seat, and a method for manufacturing a seat pad that can simplify a work process.

この目的を達成するために本発明のシートパッドは、表面と裏面とを有するパッド本体と、前記パッド本体の前記裏面に一体化される補強材とを備え、前記パッド本体は、前記表面から前記裏面に貫通する貫通孔を備え、前記補強材は、前記貫通孔の少なくとも一部を塞ぐ閉塞部を備え、前記閉塞部は、隣接する部位よりも低強度に設定される脆弱部を備え、前記閉塞部が前記貫通孔の内側で前記脆弱部により複数に分割されるIn order to achieve this object, the seat pad of the present invention includes a pad body having a front surface and a back surface, and a reinforcing material integrated with the back surface of the pad body. a through hole penetrating to the back surface, said reinforcing member is provided with a closing portion for closing at least a part of said through hole, said closure portion includes a fragile portion which is set to a low strength than adjacent sites, the The closed portion is divided into a plurality of parts by the fragile portion inside the through hole .

また、本発明のシートパッドの製造方法は、パッド本体の裏面に補強材が一体化されるシートパッドを製造するものであって、前記補強材を金型に保持させる保持工程と、前記補強材が保持された前記金型のキャビティ内に材料を投入し前記パッド本体を成形して前記パッド本体と前記補強材を一体化する成形工程とを備え、前記補強材は、隣接する部位よりも低強度に設定される脆弱部を備え、前記金型は、前記キャビティ内に突出して前記保持工程で前記脆弱部およびその周囲を挟む挟持部を備え、前記挟持部に挟まれた前記補強材が、前記挟持部の周縁よりも内側で前記脆弱部により複数に分割されるFurther, the method for manufacturing a seat pad of the present invention is to manufacture a seat pad in which a reinforcing material is integrated on the back surface of the pad body, and includes a holding step of holding the reinforcing material in a mold and the reinforcing material. The pad body is molded into the cavity of the mold in which the pad body is held, and the pad body is integrated with the reinforcing material. The reinforcing material is lower than the adjacent portion. The mold is provided with a fragile portion set to a strength, the mold is provided with a holding portion that protrudes into the cavity and sandwiches the fragile portion and its surroundings in the holding step, and the reinforcing material sandwiched between the holding portions is formed. It is divided into a plurality of parts by the fragile portion inside the peripheral edge of the sandwiching portion .

請求項1記載のシートパッドによれば、パッド本体の貫通孔の少なくとも一部が閉塞部により塞がれる。補強材の閉塞部は、隣接する部位よりも低強度に設定される脆弱部を備える。この脆弱部により閉塞部が貫通孔の内側で複数に分割される。そのため、閉塞部を押すことで、脆弱部を起点に閉塞部を破ったり押し広げたりして、閉塞部に孔を容易に設けることができる。これにより、閉塞部を除去する場合に比べて、作業工程を簡素化できる効果がある。 According to the seat pad according to claim 1, at least a part of the through hole of the pad body is closed by the closing portion. The closed portion of the reinforcing material includes a fragile portion set to have a lower strength than the adjacent portion. This fragile portion divides the closed portion into a plurality of parts inside the through hole. Therefore, by pushing the closed portion, the closed portion can be broken or expanded starting from the fragile portion, and a hole can be easily provided in the closed portion. This has the effect of simplifying the work process as compared with the case of removing the closed portion.

請求項2記載のシートパッドによれば、脆弱部は、閉塞部を貫通する複数の貫通部分と、脆弱部により複数に分割された閉塞部同士を貫通部分の間で連結する連結部と、を備えて仮想線上設けられる。これにより、請求項1の効果に加え、脆弱部により分割された閉塞部を捲れたり折れ曲がったりし難くできる。 According to the seat pad according to claim 2, the fragile portion includes a plurality of penetrating portions penetrating the closed portion and a connecting portion for connecting the closed portions divided by the fragile portion between the penetrating portions. It is provided on the virtual line in preparation. As a result, in addition to the effect of claim 1, it is possible to prevent the closed portion divided by the fragile portion from being rolled up or bent.

請求項3記載の乗物用シートによれば、請求項1又は2に記載のシートパッドがフレームに支持される。挿入部材を閉塞部に押し付けることで、脆弱部を起点に閉塞部を破ったり押し広げたりして挿入部材が閉塞部を貫通できる。閉塞部を貫通した挿入部材がパッド本体の貫通孔に挿入され、フレームの受部材に挿入部材が取り付けられる。このように、閉塞部が脆弱部を有するので、挿入部材の取付時に挿入部材で閉塞部を押して貫通させることができ、挿入部材が閉塞部を貫通する孔を別途設ける工程をなくすことができる。その結果、請求項1又は2の効果に加え、作業工程をより簡素化できる効果がある。 According to the vehicle seat according to claim 3, the seat pad according to claim 1 or 2 is supported by the frame. By pressing the insertion member against the closed portion, the inserted member can penetrate the closed portion by breaking or expanding the closed portion starting from the fragile portion. The insertion member penetrating the closing portion is inserted into the through hole of the pad body, and the insertion member is attached to the receiving member of the frame. As described above, since the closing portion has the fragile portion, the closing portion can be pushed through by the inserting member when the insertion member is attached, and the step of separately providing a hole through which the insertion member penetrates the closing portion can be eliminated. As a result, in addition to the effect of claim 1 or 2, there is an effect that the work process can be further simplified.

請求項4記載の乗物用シートによれば、挿入部材が受部材に取り付けられた状態において、挿入部材と受部材との間に補強材が挟まれる。これにより、挿入部材が貫通した閉塞部(補強材)の孔を広げる力を、その孔の周縁にかかり難くできるので、請求項3の効果に加え、挿入部材が貫通した閉塞部(補強材)の孔を起点に補強材を破れ難くできる効果がある。 According to the vehicle sheet according to claim 4, a reinforcing material is sandwiched between the inserting member and the receiving member in a state where the inserting member is attached to the receiving member. As a result, the force for expanding the hole of the closing portion (reinforcing material) through which the insertion member penetrates can be made less likely to be applied to the peripheral edge of the hole. Therefore, in addition to the effect of claim 3, the closing portion (reinforcing material) through which the inserting member penetrates. It has the effect of making it difficult for the reinforcing material to tear, starting from the hole in.

請求項5記載のシートパッドの製造方法によれば、補強材は、隣接する部位よりも低強度に設定される脆弱部を備える。保持工程では、補強材を金型に保持させ、金型の挟持部で脆弱部およびその周囲を挟む。挟持部に挟まれた補強材が、挟持部の周縁よりも内側で脆弱部により複数に分割される。次いで、成形工程では、補強材が保持された金型のキャビティ内に材料を投入しパッド本体を成形してパッド本体の裏面と補強材を一体化する。挟持部がキャビティ内に突出するので、パッド本体には挟持部に対応する部分に貫通孔が設けられ、その貫通孔の少なくとも一部が、予め脆弱部が設けられた補強材により塞がれる。貫通孔を塞ぐ補強材を押すことで、脆弱部を起点に補強材を破ったり押し広げたりして、補強材に孔を容易に設けることができる。これにより、貫通孔を塞ぐ補強材を除去する場合に比べて、作業工程を簡素化できる効果がある。 According to the method for manufacturing a seat pad according to claim 5, the reinforcing material includes a fragile portion set to have a lower strength than an adjacent portion. In the holding step, the reinforcing material is held by the mold, and the fragile portion and its surroundings are sandwiched between the holding portions of the mold. The reinforcing material sandwiched between the sandwiched portions is divided into a plurality of pieces by the fragile portion inside the peripheral edge of the sandwiched portion. Next, in the molding step, the material is put into the cavity of the mold in which the reinforcing material is held, the pad body is molded, and the back surface of the pad body and the reinforcing material are integrated. Since the sandwiching portion projects into the cavity, the pad body is provided with a through hole in a portion corresponding to the sandwiching portion, and at least a part of the through hole is closed by a reinforcing material provided with a fragile portion in advance. By pushing the reinforcing material that closes the through hole, the reinforcing material can be broken or expanded starting from the fragile portion, and the hole can be easily provided in the reinforcing material. This has the effect of simplifying the work process as compared with the case of removing the reinforcing material that closes the through hole.

また、パッド本体と一体化された補強材の閉塞部に脆弱部を設ける場合に比べて、パッド本体と一体化される前の閉塞部に脆弱部を設ける方が、閉塞部の扱いを簡単にでき、脆弱部を設け易くできる。よって、作業工程をより簡素化できる効果がある。 Further, it is easier to handle the closed portion by providing the fragile portion in the closed portion before being integrated with the pad main body, as compared with the case where the fragile portion is provided in the closed portion of the reinforcing material integrated with the pad main body. It can be made easy to provide vulnerable parts. Therefore, there is an effect that the work process can be further simplified.

請求項6記載のシートパッドの製造方法によれば、脆弱部は、補強材を貫通する複数の貫通部分と、挟持部の周縁よりも内側で脆弱部により複数に分割された補強材同士を貫通部分の間で連結する連結部と、を備えて仮想線上に設けられる。これにより、請求項5の効果に加え、補強材のうち脆弱部により分割された部位を捲れたり折れ曲がったりし難くできる。 According to the method for manufacturing a seat pad according to claim 6, the fragile portion penetrates a plurality of penetrating portions penetrating the reinforcing material and reinforcing materials divided into a plurality of parts by the fragile portion inside the peripheral edge of the sandwiching portion. It is provided on a virtual line with a connecting portion that connects the portions. As a result, in addition to the effect of claim 5, it is possible to make it difficult for the portion of the reinforcing material divided by the fragile portion to be rolled up or bent.

本発明の第1実施の形態における乗物用シートの背面図である。It is a rear view of the vehicle seat in the 1st Embodiment of this invention. シートパッドの背面図である。It is a rear view of a seat pad. (a)はパッド本体の成形前を示す説明図であり、(b)はパッド本体の成形後を示す説明図である。(A) is an explanatory view showing before molding of the pad body, and (b) is an explanatory view showing after molding of the pad body. フックを取り付ける前の乗物用シートの断面図である。It is sectional drawing of the vehicle seat before attaching a hook. フックを取り付けた乗物用シートの断面図である。It is sectional drawing of the vehicle seat which attached the hook. (a)は第2実施の形態における閉塞部の背面図であり、(b)は第3実施の形態における閉塞部の背面図であり、(c)は第4実施の形態における閉塞部の背面図であり、(d)は第5実施の形態における閉塞部の背面図であり、(e)は第6実施の形態における閉塞部の背面図である。(A) is a rear view of the closed portion in the second embodiment, (b) is a rear view of the closed portion in the third embodiment, and (c) is a rear view of the closed portion in the fourth embodiment. FIG. 3D is a rear view of the closed portion in the fifth embodiment, and (e) is a rear view of the closed portion in the sixth embodiment.

以下、本発明の好ましい実施の形態について、添付図面を参照して説明する。まず、図1及び図2を参照して、本発明の第1実施の形態における乗物用シート1について説明する。図1は乗物用シート1の背面図であり、図2はシートパッド10の背面図である。図1は、シートバック3のフレーム5が破線で図示され、シートバック3のカバー6の一部(図1左上側)が破断して図示される。 Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. First, the vehicle seat 1 according to the first embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is a rear view of the vehicle seat 1, and FIG. 2 is a rear view of the seat pad 10. In FIG. 1, the frame 5 of the seat back 3 is shown by a broken line, and a part of the cover 6 of the seat back 3 (upper left side of FIG. 1) is broken and shown.

図1に示すように、乗物用シート1は、自動車に搭載されるシートである。なお、乗物用シート1は、自動車に搭載される場合に限らず、鉄道車両や船舶、航空機等に搭載することが可能である。乗物用シート1は、乗員が着座するシートクッション2と、乗員の背凭れとなるシートバック3と、乗員の頭部を支えるヘッドレスト4とを備える。 As shown in FIG. 1, the vehicle seat 1 is a seat mounted on an automobile. The vehicle seat 1 can be mounted not only on an automobile but also on a railroad vehicle, a ship, an aircraft, or the like. The vehicle seat 1 includes a seat cushion 2 on which the occupant sits, a seat back 3 that serves as a backrest for the occupant, and a headrest 4 that supports the occupant's head.

シートバック3は、フレーム5と、フレーム5に支持されるシートパッド10と、シートパッド10に被せられるカバー6とを備える。なお、シートクッション2及びヘッドレスト4も同様に、フレームに支持されたシートパッドにカバーを被せて形成される。フレーム5は、所定の剛性や強度を有する鋼等の金属や合成樹脂から構成される部材である。 The seat back 3 includes a frame 5, a seat pad 10 supported by the frame 5, and a cover 6 that covers the seat pad 10. Similarly, the seat cushion 2 and the headrest 4 are also formed by covering the seat pad supported by the frame with a cover. The frame 5 is a member made of a metal such as steel or a synthetic resin having a predetermined rigidity and strength.

カバー6は、主にファブリックや合成皮革または皮革等から構成される軟性の部材である。カバー6は、シートパッド10内に埋設されるワイヤやクリップ等にフック等(いずれも図示せず)を引っ掛けて固定される。 The cover 6 is a soft member mainly composed of fabric, synthetic leather, leather or the like. The cover 6 is fixed by hooking a hook or the like (neither of them is shown) on a wire, a clip or the like embedded in the seat pad 10.

シートバック3には、背面(図1紙面手前側)の右上に金属製や合成樹脂製のフック20が設けられる。フック20は、手荷物等を引っ掛けるための部材である。フック20は、背面視において四角枠状の本体部21と、本体部21に収容されるフック部22とを備える。フック部22の下部は、本体部21の下部に回転可能に支持される。本体部21に対してフック部22を回転させることで、本体部21から突出させたフック部22に手荷物等を引っ掛けることができる。 The seat back 3 is provided with a hook 20 made of metal or synthetic resin on the upper right of the back surface (the front side of the paper in FIG. 1). The hook 20 is a member for hooking baggage or the like. The hook 20 includes a square frame-shaped main body portion 21 and a hook portion 22 housed in the main body portion 21 when viewed from the rear. The lower portion of the hook portion 22 is rotatably supported by the lower portion of the main body portion 21. By rotating the hook portion 22 with respect to the main body portion 21, baggage or the like can be hooked on the hook portion 22 protruding from the main body portion 21.

図2に示すように、シートパッド10は、弾力性のある軟質ポリウレタンフォーム等の発泡合成樹脂製のパッド本体11と、パッド本体11の裏面11b(図4参照)に一体化される補強材12とを備える。パッド本体11の表面11aにカバー6(図1参照)が被せられる。シートパッド10の補強材12側がフレーム5(図1参照)に接触する。 As shown in FIG. 2, the seat pad 10 is a reinforcing material 12 integrated with a pad body 11 made of foamed synthetic resin such as elastic flexible polyurethane foam and a back surface 11b (see FIG. 4) of the pad body 11. And. A cover 6 (see FIG. 1) is placed on the surface 11a of the pad body 11. The reinforcing material 12 side of the seat pad 10 comes into contact with the frame 5 (see FIG. 1).

補強材12は、フレーム5とシートパッド10との擦れ合いによる異音の発生やシートパッド10の破れ等を抑制するための布状の部材であり、不織布から構成される。なお、補強材12は、不織布から構成される場合に限らず、粗毛布、寒冷紗、フェルト、織編物あるいはこれらの積層複合体等により形成できる。なお、補強材12には、合成樹脂や金属等のワイヤを織り込んだり接着したりしても良い。また、これらの素材や合成樹脂等を用いた成形体を補強材12としても良い。 The reinforcing material 12 is a cloth-like member for suppressing the generation of abnormal noise due to the rubbing between the frame 5 and the seat pad 10 and the tearing of the seat pad 10, and is made of a non-woven fabric. The reinforcing material 12 is not limited to the case of being composed of a non-woven fabric, and can be formed of a coarse blanket, a lawn cloth, felt, a woven or knitted fabric, or a laminated composite of these. A wire made of synthetic resin or metal may be woven or adhered to the reinforcing material 12. Further, a molded product using these materials, synthetic resin, or the like may be used as the reinforcing material 12.

シートパッド10は、着座する乗員側(図2紙面奥側)に設けられる表部パッド13と、表部パッド13との間にフレーム5(図4参照)を挟んで配置される裏部パッド14とを備える。裏部パッド14のパッド本体11には、フック20(図1参照)が設けられる位置に、パッド本体11を表面11aから裏面11bに貫通する略矩形状の貫通孔15が設けられる。 The seat pad 10 is a back pad 14 arranged with a frame 5 (see FIG. 4) sandwiched between the front pad 13 provided on the seated occupant side (the back side of the paper in FIG. 2) and the front pad 13. And. The pad body 11 of the back pad 14 is provided with a substantially rectangular through hole 15 that penetrates the pad body 11 from the front surface 11a to the back surface 11b at a position where the hook 20 (see FIG. 1) is provided.

補強材12は、貫通孔15を塞ぐ閉塞部16を備える。閉塞部16は、隣接する部位よりも低強度に設定される脆弱部17を備える。脆弱部17は、直線状の第1仮想線18上に設けられる2つの第1脆弱部17aと、直線状の第2仮想線19上に設けられる2つの第2脆弱部17bと、第1仮想線18と第2仮想線19とが交わる位置に設けられる連結部17cとを備える。 The reinforcing material 12 includes a closing portion 16 that closes the through hole 15. The closing portion 16 includes a fragile portion 17 that is set to have a lower strength than the adjacent portion. The vulnerable parts 17 include two first vulnerable parts 17a provided on the linear first virtual line 18, two second vulnerable parts 17b provided on the linear second virtual line 19, and a first virtual line. A connecting portion 17c provided at a position where the line 18 and the second virtual line 19 intersect is provided.

第1脆弱部17a及び第2脆弱部17bは、閉塞部16を布厚方向に貫通する部位であり、強度が0である。第1仮想線18と第2仮想線19とは互いに垂直に交わり、第1脆弱部17aと第2脆弱部17bとが十字状に配置される。なお、第1仮想線18及び第2仮想線19は直線状に限らず、第1仮想線18及び第2仮想線19を曲線状に形成することが可能である。 The first fragile portion 17a and the second fragile portion 17b are portions that penetrate the closed portion 16 in the cloth thickness direction, and have a strength of 0. The first virtual line 18 and the second virtual line 19 intersect each other vertically, and the first vulnerable portion 17a and the second vulnerable portion 17b are arranged in a cross shape. The first virtual line 18 and the second virtual line 19 are not limited to a straight line, and the first virtual line 18 and the second virtual line 19 can be formed into a curved line.

閉塞部16は、第1脆弱部17a及び第2脆弱部17bにより分割される分割部16a,16b,16c,16dを備える。連結部17cは、分割部16a,16b,16c,16dの角同士を連結する部位である。これにより、分割部16a,16b,16c,16dの角がそれぞれ捲れたり折れ曲がったりすることを防止できる。また、連結部17cは、線状の第1脆弱部17a及び第2脆弱部17bの延長線上の部位なので、分割部16a,16b,16c,16dよりも強度が低い。 The closing portion 16 includes divided portions 16a, 16b, 16c, 16d divided by the first vulnerable portion 17a and the second vulnerable portion 17b. The connecting portion 17c is a portion that connects the corners of the divided portions 16a, 16b, 16c, and 16d. As a result, it is possible to prevent the corners of the divided portions 16a, 16b, 16c, and 16d from being rolled up or bent, respectively. Further, since the connecting portion 17c is a portion on the extension line of the linear first fragile portion 17a and the second fragile portion 17b, the strength is lower than that of the divided portions 16a, 16b, 16c, 16d.

次に図3(a)及び図3(b)を参照して、シートパッド10の製造方法について説明する。図3(a)はパッド本体11の成形前を示す説明図であり、図3(b)はパッド本体11の成形後を示す説明図である。なお、図3(a)及び図3(b)では、理解を容易にするため、補強材12の布厚を厚くし誇張して図示している(図4及び図5も同様)。 Next, a method of manufacturing the seat pad 10 will be described with reference to FIGS. 3 (a) and 3 (b). FIG. 3A is an explanatory view showing the pad body 11 before molding, and FIG. 3B is an explanatory view showing the pad body 11 after molding. In addition, in FIG. 3A and FIG. 3B, in order to facilitate understanding, the cloth thickness of the reinforcing material 12 is increased and exaggerated (the same applies to FIGS. 4 and 5).

図3(a)に示すように、シートパッド10は、金型30を用いて製造する。金型30は、下型31と、下型31に回転軸32で回転可能に支持される上型33と、上型33に駆動装置34を介して取り付けられる中子型35とを備える。パッド本体11の貫通孔15に対応する部分には、上型33と中子型35とから互いに向かってそれぞれ挟持部36,37が突出する。上型33から突出する挟持部36の突出量よりも、中子型35から突出する挟持部37の突出量が大きく設定される。 As shown in FIG. 3A, the seat pad 10 is manufactured by using the mold 30. The mold 30 includes a lower mold 31, an upper mold 33 rotatably supported by the lower mold 31 by a rotating shaft 32, and a core mold 35 attached to the upper mold 33 via a drive device 34. The sandwiching portions 36 and 37 project from the upper mold 33 and the core mold 35 toward each other in the portion of the pad body 11 corresponding to the through hole 15. The amount of protrusion of the holding portion 37 protruding from the core mold 35 is set to be larger than the amount of protrusion of the holding portion 36 protruding from the upper mold 33.

駆動装置34は、油圧シリンダやエアシリンダ、電動シリンダ等のアクチュエータである。駆動装置34は、上型33の外側に固定されるシリンダ本体34aと、シリンダ本体34aから突出するロッド34bと、シリンダ本体34aに対してロッド34bを出没させる駆動部(図示せず)とを備える。ロッド34bは、上型33を貫通して先端に中子型35が固定される。 The drive device 34 is an actuator such as a hydraulic cylinder, an air cylinder, or an electric cylinder. The drive device 34 includes a cylinder body 34a fixed to the outside of the upper die 33, a rod 34b protruding from the cylinder body 34a, and a drive unit (not shown) that allows the rod 34b to appear and disappear with respect to the cylinder body 34a. .. The rod 34b penetrates the upper mold 33 and the core mold 35 is fixed to the tip thereof.

シートパッド10を製造するには、金型30に補強材12を保持させる保持工程を行う。保持工程では、まず、下型31と上型33とを開いた状態、且つ、シリンダ本体34aからロッド34bを繰り出させて上型33と中子型35とを離した状態で、中子型35に補強材12を磁石やフック等で保持させる。このとき、挟持部37に補強材12の脆弱部17及びその周囲(閉塞部16)を対向させる。次いで、ロッド34bをシリンダ本体34aに収容して上型33と中子型35とを接触させる。これにより、補強材12の脆弱部17及びその周囲(閉塞部16)が挟持部36,37で挟まれる。 In order to manufacture the seat pad 10, a holding step of holding the reinforcing material 12 in the mold 30 is performed. In the holding step, first, the core mold 35 is in a state where the lower mold 31 and the upper mold 33 are opened, and the rod 34b is extended from the cylinder body 34a to separate the upper mold 33 and the core mold 35. Holds the reinforcing material 12 with a magnet, a hook, or the like. At this time, the fragile portion 17 of the reinforcing material 12 and its surroundings (closed portion 16) are opposed to the sandwiching portion 37. Next, the rod 34b is housed in the cylinder body 34a and the upper die 33 and the core die 35 are brought into contact with each other. As a result, the fragile portion 17 of the reinforcing material 12 and its surroundings (closed portion 16) are sandwiched between the sandwiching portions 36 and 37.

連結部17cにより分割部16a,16b,16c,16d(図2参照)の角が捲れたり折れ曲がったりすることを防止できるので、その捲れや折れ曲がりの確認や直しを省略できる。その結果、挟持部36,37で脆弱部17及びその周囲を挟み易くでき、作業効率を向上できる。 Since the connecting portion 17c can prevent the corners of the divided portions 16a, 16b, 16c, 16d (see FIG. 2) from being curled or bent, it is possible to omit checking or repairing the curling or bending. As a result, the fragile portions 17 and their surroundings can be easily sandwiched between the sandwiching portions 36 and 37, and the work efficiency can be improved.

保持工程の後は、パッド本体11を成形する成形工程を行う。成形工程では、まず、パッド本体11の材料である発泡原液を下型31に注入する。次いで、下型31に対して上型33を回転軸32を中心に回転させて下型31と上型33とを閉じる。下型31と上型33とを閉じたときに、金型30内に形成される空間がキャビティ38である。 After the holding step, a molding step of molding the pad body 11 is performed. In the molding step, first, the foaming stock solution, which is the material of the pad body 11, is injected into the lower mold 31. Next, the upper die 33 is rotated about the rotation shaft 32 with respect to the lower die 31, and the lower die 31 and the upper die 33 are closed. The space formed in the mold 30 when the lower mold 31 and the upper mold 33 are closed is the cavity 38.

次いで、図3(b)に示すように、キャビティ38内で発泡原液を発泡、硬化させてパッド本体11を成形する。成形工程の後は、下型31と上型33とを開き、シリンダ本体34aからロッド34bを繰り出させて上型33と中子型35とを離し、中子型35から成形体を外す。このようにしてシートパッド10が得られる。 Next, as shown in FIG. 3B, the foam stock solution is foamed and cured in the cavity 38 to form the pad body 11. After the molding step, the lower mold 31 and the upper mold 33 are opened, the rod 34b is extended from the cylinder body 34a to separate the upper mold 33 and the core mold 35, and the molded body is removed from the core mold 35. In this way, the seat pad 10 is obtained.

下型31により表部パッド13の表面11aが成形され、上型33により裏部パッド14の表面11aが成形され、中子型35により表部パッド13及び裏部パッド14の裏面11bが成形される。発泡原液は不織布製の補強材12に含浸するので、パッド本体11の裏面11bと補強材12とを一体化できる。 The lower mold 31 forms the surface 11a of the front pad 13, the upper mold 33 forms the surface 11a of the back pad 14, and the core mold 35 forms the back surface 11b of the front pad 13 and the back pad 14. To. Since the foaming stock solution impregnates the reinforcing material 12 made of non-woven fabric, the back surface 11b of the pad body 11 and the reinforcing material 12 can be integrated.

さらに、キャビティ38内に挟持部36,37が突出するので、挟持部36,37によりパッド本体11に貫通孔15が形成される。その挟持部36,37には、補強材12の脆弱部17及びその周囲が挟まれるので、補強材12によって貫通孔15を塞ぐ閉塞部16が形成される。 Further, since the sandwiching portions 36 and 37 project into the cavity 38, the sandwiching portions 36 and 37 form a through hole 15 in the pad body 11. Since the fragile portion 17 of the reinforcing member 12 and its surroundings are sandwiched between the sandwiching portions 36 and 37, a closing portion 16 that closes the through hole 15 is formed by the reinforcing member 12.

この場合、金型30から外したシートパッド10の閉塞部16に予め脆弱部17が設けられている。なお、シートパッド10の成形後、カッターナイフ等の工具を用いて、閉塞部16に脆弱部17を設けることは可能である。しかし、補強材12単体に比べて、パッド本体11が一体化された補強材12は寸法が大きくて重く、形状も特定されているので扱い難い。但し、この場合には、閉塞部16の位置が特定されているので、脆弱部17を所定の位置に設け易くできる。 In this case, the fragile portion 17 is provided in advance in the closed portion 16 of the seat pad 10 removed from the mold 30. After molding the seat pad 10, it is possible to provide the fragile portion 17 in the closed portion 16 by using a tool such as a cutter knife. However, as compared with the reinforcing material 12 alone, the reinforcing material 12 in which the pad body 11 is integrated is large in size and heavy, and the shape is also specified, so that it is difficult to handle. However, in this case, since the position of the closing portion 16 is specified, the fragile portion 17 can be easily provided at a predetermined position.

これに対し本実施の形態では、パッド本体11と一体化される前の補強材12の所定位置に予め脆弱部17が設けられているので、補強材12の扱いを簡単にでき、補強材12に脆弱部17を設け易くできる。予め脆弱部17を設けた補強材12を挟持部36,37で挟んで、閉塞部16に脆弱部17を設けることで、作業工程を簡素化できる。 On the other hand, in the present embodiment, since the fragile portion 17 is provided in advance at a predetermined position of the reinforcing material 12 before being integrated with the pad body 11, the reinforcing material 12 can be easily handled, and the reinforcing material 12 can be easily handled. It is possible to easily provide the fragile portion 17 in the fragile portion 17. The work process can be simplified by sandwiching the reinforcing member 12 provided with the fragile portion 17 in advance between the holding portions 36 and 37 and providing the fragile portion 17 in the closing portion 16.

挟持部36の突出量よりも挟持部37の突出量が大きいので、パッド本体11の厚さ方向(表面11aから裏面11bへ向かう方向)の中央よりも表面11a側に閉塞部16が配置される。さらに、その閉塞部16よりも裏面11b側の貫通孔15の内周面には、閉塞部16に連なる補強材12が一体化される。 Since the amount of protrusion of the sandwiching portion 37 is larger than the amount of protrusion of the sandwiching portion 36, the closing portion 16 is arranged on the surface 11a side of the center of the pad body 11 in the thickness direction (direction from the front surface 11a to the back surface 11b). .. Further, a reinforcing member 12 connected to the closed portion 16 is integrated on the inner peripheral surface of the through hole 15 on the back surface 11b side of the closed portion 16.

なお、発泡原液を発泡させてキャビティ38内を充填させるとき、パッド本体11の表部パッド13側から裏部パッド14側へ回り込むように発泡原液が充填される。そのため、挟持部36,37の駆動装置34側に空所が発生し易く、成形不良を生じるおそれがある。但し、本実施の形態では、挟持部36,37に不織布製の補強材12が挟まれるので、その挟まれた補強材12に発泡原液を含浸させながら挟持部36,37の駆動装置34側に発泡原液を早期に回り込ませることができる。その結果、挟持部36,37の駆動装置34側に空所を発生し難くでき、成形不良を抑制できる。なお、補強材12が不織布である場合に限らず、発泡原液を含浸可能な素材から補強材12が構成されれば、同様に成形不良を抑制できる。 When the foaming stock solution is foamed to fill the cavity 38, the foaming stock solution is filled so as to wrap around from the front pad 13 side of the pad body 11 to the back pad 14 side. Therefore, vacant spaces are likely to occur on the drive device 34 side of the holding portions 36 and 37, which may cause molding defects. However, in the present embodiment, since the reinforcing material 12 made of non-woven fabric is sandwiched between the sandwiching portions 36 and 37, the sandwiched reinforcing material 12 is impregnated with the foamed stock solution and placed on the driving device 34 side of the sandwiching portions 36 and 37. The foaming stock solution can be circulated at an early stage. As a result, it is possible to make it difficult for vacant spaces to be generated on the drive device 34 side of the holding portions 36 and 37, and it is possible to suppress molding defects. Not only when the reinforcing material 12 is a non-woven fabric, if the reinforcing material 12 is made of a material that can be impregnated with the foam stock solution, molding defects can be similarly suppressed.

次に図4を参照して、フック20が取り付けられる受部材5aについて説明する。図4はフック20を取り付ける前の乗物用シート1の断面図である。図4に示すように、フレーム5には、フック20が取り付けられる受部材5aが固定される。受部材5aは、1面が開口した箱状の部材である。受部材5aは、フレーム5に溶接されている。なお、受部材5aがフレーム5に溶接される場合に限らず、受部材5aをフレーム5にボルトや接着剤、ピン、フック等で固定しても良い。 Next, with reference to FIG. 4, the receiving member 5a to which the hook 20 is attached will be described. FIG. 4 is a cross-sectional view of the vehicle seat 1 before the hook 20 is attached. As shown in FIG. 4, a receiving member 5a to which the hook 20 is attached is fixed to the frame 5. The receiving member 5a is a box-shaped member having one open surface. The receiving member 5a is welded to the frame 5. The receiving member 5a may be fixed to the frame 5 with bolts, an adhesive, a pin, a hook, or the like, not only when the receiving member 5a is welded to the frame 5.

受部材5aは、開口した部分の縁が端縁5bである。フレーム5にシートパッド10を組み付けるとき、受部材5aの端縁5b側がパッド本体11の貫通孔15に挿入される。貫通孔15の内周面には、補強材12が一体化されているので、受部材5aと貫通孔15の内周面とが擦れ合って、パッド本体11が削れたり異音が発生したりすることを抑制できる。 The edge of the opened portion of the receiving member 5a is the edge edge 5b. When the seat pad 10 is assembled to the frame 5, the end edge 5b side of the receiving member 5a is inserted into the through hole 15 of the pad body 11. Since the reinforcing material 12 is integrated with the inner peripheral surface of the through hole 15, the receiving member 5a and the inner peripheral surface of the through hole 15 rub against each other, and the pad body 11 is scraped or an abnormal noise is generated. Can be suppressed.

受部材5aには、端縁5bから離れた底面を貫通して受入部5cが設けられる。この受入部5cに、フック20の本体部21から突出する固定部23が挿入される。受入部5cの寸法に対して固定部23の寸法が僅かに大きく設定されるので、固定部23が受入部5cに圧入されて、フック20が受部材5aに固定される。なお、固定部23が受入部5cに圧入された状態で、本体部21が受部材5aの端縁5bに接触するように本体部21及び受部材5aの寸法が設定される。 The receiving member 5a is provided with a receiving portion 5c so as to penetrate the bottom surface away from the edge 5b. A fixing portion 23 protruding from the main body portion 21 of the hook 20 is inserted into the receiving portion 5c. Since the dimension of the fixing portion 23 is set slightly larger than the dimension of the receiving portion 5c, the fixing portion 23 is press-fitted into the receiving portion 5c and the hook 20 is fixed to the receiving member 5a. The dimensions of the main body 21 and the receiving member 5a are set so that the main body 21 comes into contact with the edge 5b of the receiving member 5a while the fixing portion 23 is press-fitted into the receiving portion 5c.

フック20の本体部21は、固定部23を頂点とした曲面状の曲面部24を有する。フック20が受部材5aに固定されるとき、この曲面部24が受部材5a内に収容される。端縁5bの上下方向および左右方向の対向間隔と、曲面部24の固定部23から離れた側の上下寸法および左右寸法とが略同じに設定される。これにより、受部材5aに本体部21を挿入していくと、端縁5bが曲面部24上を滑るようにして、固定部23を受入部5cに案内できる。その結果、フック20を受部材5aに取り付け易くできる。 The main body portion 21 of the hook 20 has a curved surface portion 24 having a fixed portion 23 as an apex. When the hook 20 is fixed to the receiving member 5a, the curved surface portion 24 is housed in the receiving member 5a. The vertical and horizontal facing distances of the edge 5b and the vertical and horizontal dimensions of the curved surface portion 24 on the side away from the fixed portion 23 are set to be substantially the same. As a result, as the main body portion 21 is inserted into the receiving member 5a, the fixed portion 23 can be guided to the receiving portion 5c so that the edge 5b slides on the curved surface portion 24. As a result, the hook 20 can be easily attached to the receiving member 5a.

次に図4に加え図5を参照して、シートパッド10を用いた乗物用シート1(シートバック3)の製造方法について説明する。図5はフック20を取り付けた乗物用シート1の断面図である。 Next, a method of manufacturing the vehicle seat 1 (seat back 3) using the seat pad 10 will be described with reference to FIG. 5 in addition to FIG. FIG. 5 is a cross-sectional view of the vehicle seat 1 to which the hook 20 is attached.

図4に示すように、まず、フレーム5にシートパッド10を組み付け、シートパッド10にカバー6を被せる。次いで、カバー6の貫通孔6aにフック20を挿入しつつ、フック20で閉塞部16を押す。これにより、脆弱部17を起点に閉塞部16が破られたり押し広げられたりして、フック20が閉塞部16を貫通する。次いで、図5に示すように、閉塞部16を貫通したフック20をパッド本体11の貫通孔15に挿入し、フック20を受部材5aに取り付けることで、シートバック3(乗物用シート1)が得られる。 As shown in FIG. 4, first, the seat pad 10 is assembled to the frame 5, and the seat pad 10 is covered with the cover 6. Next, while inserting the hook 20 into the through hole 6a of the cover 6, the closing portion 16 is pushed by the hook 20. As a result, the closing portion 16 is torn or expanded starting from the fragile portion 17, and the hook 20 penetrates the closing portion 16. Next, as shown in FIG. 5, the hook 20 penetrating the closing portion 16 is inserted into the through hole 15 of the pad body 11, and the hook 20 is attached to the receiving member 5a, whereby the seat back 3 (vehicle seat 1) is formed. can get.

このように、閉塞部16が脆弱部17を有するので、閉塞部16を押すことで、脆弱部17を起点に閉塞部16を破ったり押し広げたりして、閉塞部16に孔を容易に設けることができる。これにより、閉塞部16をカッターナイフ等の工具を用いて除去する場合に比べて、作業工程を簡素化できる。また、閉塞部16を除去しないので、除去した部分のゴミをなくすことができる。 As described above, since the closing portion 16 has the fragile portion 17, by pushing the closing portion 16, the closing portion 16 is broken or expanded from the fragile portion 17 as a starting point, and a hole is easily provided in the closing portion 16. be able to. As a result, the work process can be simplified as compared with the case where the closed portion 16 is removed by using a tool such as a cutter knife. Further, since the closed portion 16 is not removed, dust in the removed portion can be eliminated.

さらに、フック20の取付時にフック20で閉塞部16を押して貫通させることができるので、フック20が閉塞部16を貫通する孔を別途設ける工程をなくすことができる。このようにフック20の取付作業と、閉塞部16に孔を設ける工程とを略同時に行うことで、作業工程をより簡素化できる。 Further, since the closing portion 16 can be pushed through by the hook 20 when the hook 20 is attached, it is possible to eliminate the step of separately providing a hole through which the hook 20 penetrates the closing portion 16. By performing the attachment work of the hook 20 and the step of providing a hole in the closing portion 16 substantially at the same time in this way, the work step can be further simplified.

第1脆弱部17a及び第2脆弱部17b(図2参照)はそれぞれ線状に設けられるので、その延長線上の閉塞部16を破り易くできる。さらに、互いに交わる第1仮想線18及び第2仮想線19上に第1脆弱部17a及び第2脆弱部17bが設けられるので、第1脆弱部17a及び第2脆弱部17bを起点にそれぞれ異なった方向へ閉塞部16を押し広げ易くできる。これらの結果、互いに交わる第1仮想線18及び第2仮想線19上に第1脆弱部17a及び第2脆弱部17bを設けることで、閉塞部16に設けられる孔を簡易に大きくできる。 Since the first fragile portion 17a and the second fragile portion 17b (see FIG. 2) are each provided in a linear shape, the closed portion 16 on the extension line thereof can be easily broken. Further, since the first vulnerable part 17a and the second vulnerable part 17b are provided on the first virtual line 18 and the second virtual line 19 intersecting each other, they are different from each other starting from the first vulnerable part 17a and the second vulnerable part 17b. The closed portion 16 can be easily spread in the direction. As a result, by providing the first vulnerable portion 17a and the second vulnerable portion 17b on the first virtual line 18 and the second virtual line 19 intersecting each other, the hole provided in the closing portion 16 can be easily enlarged.

特に、分割部16a,16b,16c,16d(図2参照)の角同士を連結する連結部17cが第1脆弱部17a及び第2脆弱部17bの延長線上に位置するので、分割部16a,16b,16c,16dに比べて連結部17cが破れ易い。この連結部17cが破れると、貫通孔である2つの第1脆弱部17aと2つの第2脆弱部17bとが繋がるので、閉塞部16の中央に大きな孔を形成できる。よって、閉塞部16に設けられる孔をより簡易に大きくできる。 In particular, since the connecting portion 17c connecting the corners of the split portions 16a, 16b, 16c, 16d (see FIG. 2) is located on the extension line of the first fragile portion 17a and the second fragile portion 17b, the split portions 16a, 16b The connecting portion 17c is more easily torn than the 16c and 16d. When the connecting portion 17c is broken, the two first vulnerable portions 17a and the two second vulnerable portions 17b, which are through holes, are connected to each other, so that a large hole can be formed in the center of the closing portion 16. Therefore, the hole provided in the closing portion 16 can be made larger more easily.

矩形状の閉塞部16に第1脆弱部17a及び第2脆弱部17bが十字状に配置されるので、分割部16a,16b,16c,16dは、それぞれ2辺がパッド本体11に支持される。これにより、フック20が閉塞部16を貫通するとき、閉塞部16及び貫通孔15の中央に向かう力を分割部16a,16b,16c,16dからフック20に付与できる。その結果、フック20を受部材5aに取り付け易くできる。 Since the first fragile portion 17a and the second fragile portion 17b are arranged in a cross shape in the rectangular closed portion 16, two sides of the divided portions 16a, 16b, 16c, and 16d are supported by the pad body 11. As a result, when the hook 20 penetrates the closed portion 16, a force toward the center of the closed portion 16 and the through hole 15 can be applied to the hook 20 from the divided portions 16a, 16b, 16c, 16d. As a result, the hook 20 can be easily attached to the receiving member 5a.

受部材5aの受入部5cにフック20の固定部23を圧入して、フック20を受部材5aに取り付けると、フック20の本体部21と受部材5aの端縁5bとの間で閉塞部16が挟まれる。これにより、フック20が貫通した閉塞部16(補強材12)の孔を広げる力が、閉塞部16(補強材12)にかかり難くできるので、フック20が貫通した孔を起点に補強材12(閉塞部16)を破れ難くできる。 When the fixing portion 23 of the hook 20 is press-fitted into the receiving portion 5c of the receiving member 5a and the hook 20 is attached to the receiving member 5a, the closing portion 16 is formed between the main body portion 21 of the hook 20 and the end edge 5b of the receiving member 5a. Is sandwiched. As a result, the force for expanding the hole of the closing portion 16 (reinforcing material 12) through which the hook 20 penetrates can be made less likely to be applied to the closing portion 16 (reinforcing material 12). The obstruction 16) can be made difficult to tear.

また、本体部21と端縁5bとで閉塞部16が挟まれるので、パッド本体11とフック20及び受部材5aとを相対移動し難くできる。パッド本体11とフック20及び受部材5aとが相対移動し易い場合には、その相対移動によりパッド本体11の貫通孔15の内周面をフック20及び受部材5aが押して、貫通孔15を起点にパッド本体11が破れるおそれがある。また、パッド本体11とフック20及び受部材5aとの相対移動による擦れ合いによって異音が発生するおそれがある。これに対し本実施の形態では、パッド本体11とフック20及び受部材5aとを相対移動し難くできるので、貫通孔15を起点にパッド本体11を破れ難くできると共に、パッド本体11とフック20及び受部材5aとの擦れ合いによる異音を発生し難くできる。 Further, since the closing portion 16 is sandwiched between the main body portion 21 and the end edge 5b, it is possible to make it difficult for the pad main body 11, the hook 20 and the receiving member 5a to move relative to each other. When the pad body 11 and the hook 20 and the receiving member 5a are easily moved relative to each other, the hook 20 and the receiving member 5a push the inner peripheral surface of the through hole 15 of the pad body 11 by the relative movement, and the through hole 15 is the starting point. There is a risk that the pad body 11 will be torn. Further, there is a possibility that abnormal noise may be generated due to rubbing between the pad body 11 and the hook 20 and the receiving member 5a due to relative movement. On the other hand, in the present embodiment, since the pad body 11 and the hook 20 and the receiving member 5a can be made difficult to move relative to each other, the pad body 11 can be made difficult to be torn starting from the through hole 15, and the pad body 11 and the hook 20 and the hook 20 It is possible to make it difficult to generate an abnormal noise due to rubbing against the receiving member 5a.

カバー6の貫通孔6aにフック20を挿入してフック20を受部材5aに取り付けると、カバー6の貫通孔6aが貫通孔15よりも小さいので、カバー6の貫通孔6aの周囲がフック20とパッド本体11との間で挟まれる。そのため、カバー6の貫通孔6aの周囲を捲れ難くできるので、外観を良くできる。なお、シートパッド10にカバー6を被せた後に、フック20を受部材5aに取り付けても良い。 When the hook 20 is inserted into the through hole 6a of the cover 6 and the hook 20 is attached to the receiving member 5a, the through hole 6a of the cover 6 is smaller than the through hole 15, so that the circumference of the through hole 6a of the cover 6 is the hook 20. It is sandwiched between the pad body 11 and the pad body 11. Therefore, it is possible to prevent the cover 6 from rolling around the through hole 6a, so that the appearance can be improved. The hook 20 may be attached to the receiving member 5a after the seat pad 10 is covered with the cover 6.

次に図6(a)を参照して、第2実施の形態について説明する。第1実施の形態では、閉塞部16に十字状の脆弱部17が配置される場合について説明した。これに対し第2実施の形態では、閉塞部40にT字状の脆弱部41が設けられる場合について説明する。なお、第1実施の形態と同一の部分については、同一の符号を付して以下の説明を省略する。図6(a)は第2実施の形態における閉塞部40の背面図である。 Next, the second embodiment will be described with reference to FIG. 6A. In the first embodiment, the case where the cross-shaped fragile portion 17 is arranged in the closed portion 16 has been described. On the other hand, in the second embodiment, a case where a T-shaped fragile portion 41 is provided in the closed portion 40 will be described. The same parts as those in the first embodiment are designated by the same reference numerals, and the following description will be omitted. FIG. 6A is a rear view of the closing portion 40 in the second embodiment.

図6(a)に示すように、閉塞部40は、閉塞部40を布厚方向に貫通する脆弱部41を備える。脆弱部41は、隣接する部位よりも低強度に設定される部位であり、強度が0である。脆弱部41は、第1仮想線42上に設けられる第1脆弱部44と、第2仮想線43上に設けられる第2脆弱部45とを備える。第1仮想線42と第2仮想線43とは互いに垂直に交わり、第1脆弱部44と第2脆弱部45とがT字状に配置される。第1脆弱部44と第2脆弱部45とは、互いに連続する。 As shown in FIG. 6A, the closed portion 40 includes a fragile portion 41 that penetrates the closed portion 40 in the cloth thickness direction. The fragile portion 41 is a portion set to have a lower strength than the adjacent portion, and the strength is 0. The vulnerable portion 41 includes a first vulnerable portion 44 provided on the first virtual line 42 and a second vulnerable portion 45 provided on the second virtual line 43. The first virtual line 42 and the second virtual line 43 intersect each other vertically, and the first vulnerable portion 44 and the second vulnerable portion 45 are arranged in a T shape. The first vulnerable part 44 and the second vulnerable part 45 are continuous with each other.

T字状に脆弱部41が設けられる第2実施の形態も第1実施の形態と同様に、脆弱部41を起点に閉塞部40を破ったり押し広げたりして、閉塞部40に孔を容易に設けることができる。これにより、閉塞部40をカッターナイフ等の工具を用いて除去する場合に比べて、作業工程を簡素化できる。 Similar to the first embodiment, in the second embodiment in which the fragile portion 41 is provided in a T shape, the fragile portion 41 is used as a starting point to break or expand the fragile portion 40 to easily make a hole in the fragile portion 40. Can be provided in. As a result, the work process can be simplified as compared with the case where the closed portion 40 is removed by using a tool such as a cutter knife.

閉塞部40は、T字状の第1脆弱部44及び第2脆弱部45により分割される分割部40a,40b,40cを備える。分割部40aは3辺がパッド本体11(図1参照)に支持されて、分割部40b,40cはそれぞれ2辺がパッド本体11に支持される。これにより、第1実施の形態と同様に、フック20(図4,5参照)が閉塞部40を貫通するとき、閉塞部40及び貫通孔15の中央に向かう力を分割部40a,40b,40cからフック20に付与できる。その結果、フック20を受部材5a(図4,5参照)に取り付け易くできる。 The closing portion 40 includes divided portions 40a, 40b, and 40c that are divided by the T-shaped first fragile portion 44 and the second fragile portion 45. The split portion 40a has three sides supported by the pad body 11 (see FIG. 1), and the split portions 40b and 40c each have two sides supported by the pad body 11. As a result, as in the first embodiment, when the hook 20 (see FIGS. 4 and 5) penetrates the closed portion 40, the force toward the center of the closed portion 40 and the through hole 15 is applied to the divided portions 40a, 40b, 40c. Can be given to the hook 20 from. As a result, the hook 20 can be easily attached to the receiving member 5a (see FIGS. 4 and 5).

ここで、第1脆弱部17aと第2脆弱部17bとが連続せず、分割部16a,16b,16c,16dの角同士が連結部17cで連結された第1実施の形態では、連結部17cを破るための力を初めに与える必要があった。これに対して第2実施の形態では、第1脆弱部44と第2脆弱部45とが互いに連続し、分割部40a,40b,40cの角を連結する連結部がない。そのため、連結部を破る力を与える必要がないので、より小さい力で脆弱部41を起点に閉塞部40を押し広げることができる。 Here, in the first embodiment in which the first vulnerable portion 17a and the second fragile portion 17b are not continuous and the corners of the divided portions 16a, 16b, 16c, 16d are connected by the connecting portion 17c, the connecting portion 17c It was necessary to first give the power to break. On the other hand, in the second embodiment, the first vulnerable portion 44 and the second vulnerable portion 45 are continuous with each other, and there is no connecting portion connecting the corners of the divided portions 40a, 40b, and 40c. Therefore, since it is not necessary to apply a force to break the connecting portion, the closing portion 40 can be expanded starting from the fragile portion 41 with a smaller force.

次に図6(b)を参照して、第3実施の形態について説明する。第1実施の形態では、閉塞部16に十字状の脆弱部17が配置される場合について説明した。これに対し第3実施の形態では、閉塞部50にH字状の脆弱部51が設けられる場合について説明する。なお、第1実施の形態と同一の部分については、同一の符号を付して以下の説明を省略する。図6(b)は第3実施の形態における閉塞部50の背面図である。 Next, a third embodiment will be described with reference to FIG. 6 (b). In the first embodiment, the case where the cross-shaped fragile portion 17 is arranged in the closed portion 16 has been described. On the other hand, in the third embodiment, the case where the H-shaped fragile portion 51 is provided in the closed portion 50 will be described. The same parts as those in the first embodiment are designated by the same reference numerals, and the following description will be omitted. FIG. 6B is a rear view of the closing portion 50 in the third embodiment.

図6(b)に示すように、閉塞部50は、隣接する部位よりも低強度に設定されるH字状の脆弱部51を備える。脆弱部51は、第1仮想線52上に設けられる複数の第1脆弱部55と、第2仮想線53上に設けられる複数の第2脆弱部56と、第3仮想線54上に設けられる複数の第3脆弱部57と、複数の第1脆弱部55、第2脆弱部56及び第3脆弱部57の間にそれぞれ配置される複数の連結部58とを備える。 As shown in FIG. 6B, the closing portion 50 includes an H-shaped fragile portion 51 that is set to have a lower strength than the adjacent portion. The vulnerable parts 51 are provided on a plurality of first vulnerable parts 55 provided on the first virtual line 52, a plurality of second vulnerable parts 56 provided on the second virtual line 53, and a third virtual line 54. A plurality of third vulnerable parts 57 and a plurality of connecting parts 58 arranged between the plurality of first vulnerable parts 55, the second vulnerable part 56, and the third vulnerable part 57 are provided.

第1脆弱部55、第2脆弱部56及び第3脆弱部57は、閉塞部50を布厚方向に貫通する線状の部位であり、強度が0である。第1仮想線52と第3仮想線54とは平行に設けられ、第1仮想線52及び第3仮想線54と第2仮想線53とは互いに垂直に交わる。第1仮想線52と第3仮想線54との間に複数の第2脆弱部56が配置される。 The first fragile portion 55, the second fragile portion 56, and the third fragile portion 57 are linear portions penetrating the closed portion 50 in the cloth thickness direction, and have a strength of 0. The first virtual line 52 and the third virtual line 54 are provided in parallel, and the first virtual line 52, the third virtual line 54, and the second virtual line 53 intersect each other perpendicularly. A plurality of second vulnerable parts 56 are arranged between the first virtual line 52 and the third virtual line 54.

閉塞部50は、H字状の脆弱部51により分割される分割部50a,50b,50c,50dを備える。分割部50a,50bはそれぞれ3辺がパッド本体11(図1参照)に支持されて、分割部50c,50dはそれぞれ1辺がパッド本体11に支持される。 The closing portion 50 includes divided portions 50a, 50b, 50c, and 50d that are divided by the H-shaped fragile portion 51. Three sides of the divided portions 50a and 50b are supported by the pad main body 11 (see FIG. 1), and one side of each of the divided portions 50c and 50d is supported by the pad main body 11.

連結部58は、分割部50a,50b,50c,50dの対向する辺をそれぞれ互いに連結する部位である。これにより、分割部50a,50b,50c,50dが捲れたり折れ曲がったりすることを防止できる。連結部58は、線状の第1脆弱部55、第2脆弱部56及び第3脆弱部57の延長線上の部位なので、分割部50a,50b,50c,50dよりも低強度である。 The connecting portion 58 is a portion that connects the opposing sides of the divided portions 50a, 50b, 50c, and 50d to each other. As a result, it is possible to prevent the divided portions 50a, 50b, 50c, and 50d from being rolled up or bent. Since the connecting portion 58 is a portion on the extension line of the linear first fragile portion 55, the second fragile portion 56, and the third fragile portion 57, the strength is lower than that of the divided portions 50a, 50b, 50c, and 50d.

このように、第1脆弱部55、第2脆弱部56及び第3脆弱部57と連結部58とを交互に破線状に設けたH字状の脆弱部51を有する第3実施の形態も第1実施の形態と同様に、脆弱部51を起点に閉塞部50を破ったり押し広げたりして、閉塞部50に孔を容易に設けることができる。これにより、閉塞部50をカッターナイフ等の工具を用いて除去する場合に比べて、作業工程を簡素化できる。 As described above, the third embodiment also has the H-shaped fragile portion 51 in which the first fragile portion 55, the second fragile portion 56, the third fragile portion 57, and the connecting portion 58 are alternately provided in a broken line shape. Similar to the first embodiment, the closed portion 50 can be easily provided with a hole by breaking or expanding the closed portion 50 starting from the fragile portion 51. As a result, the work process can be simplified as compared with the case where the closed portion 50 is removed by using a tool such as a cutter knife.

脆弱部51がH字状に設けられるので、閉塞部50を押して、分割部50a,50b,50c,50dよりも低強度の連結部58が破れると、1辺のみがパッド本体11に支持される分割部50c,50dが開く。これにより、閉塞部50に設けられる孔を第2脆弱部56の両側に大きくあけることができる。即ち、脆弱部51がH字状に設けられることで、少ない力で閉塞部50に設けられる孔を大きくできるので、作業効率を向上できる。 Since the fragile portion 51 is provided in an H shape, when the closing portion 50 is pushed and the connecting portion 58 having a strength lower than that of the divided portions 50a, 50b, 50c, 50d is broken, only one side is supported by the pad body 11. The divided portions 50c and 50d open. As a result, holes provided in the closed portion 50 can be largely formed on both sides of the second vulnerable portion 56. That is, since the fragile portion 51 is provided in an H shape, the hole provided in the closed portion 50 can be enlarged with a small force, so that the work efficiency can be improved.

また、左右方向の中央に配置される第2脆弱部56の両側に分割部50c,50dが開くので、貫通孔15の内周からの分割部50c,50dの寸法を比較的大きくできる。これにより、分割部50c,50dをフック20(図5参照)と受部材5a(図5参照)との間に挟み易くできるので、補強材12をより破れ難くできると共に、パッド本体11(図5参照)とフック20及び受部材5aとの擦れ合いによる異音をより発生し難くできる。 Further, since the divided portions 50c and 50d are opened on both sides of the second fragile portion 56 arranged in the center in the left-right direction, the dimensions of the divided portions 50c and 50d from the inner circumference of the through hole 15 can be made relatively large. As a result, the divided portions 50c and 50d can be easily sandwiched between the hook 20 (see FIG. 5) and the receiving member 5a (see FIG. 5), so that the reinforcing material 12 can be made more difficult to tear and the pad body 11 (see FIG. 5). (See) and the hook 20 and the receiving member 5a are rubbed against each other to make it less likely to generate an abnormal noise.

次に図6(c)を参照して、第4実施の形態について説明する。第1実施の形態では、直交する2つの仮想線上に脆弱部17が配置される場合について説明した。これに対し第4実施の形態では、5つの仮想線上に脆弱部61が配置される場合について説明する。なお、第1実施の形態と同一の部分については、同一の符号を付して以下の説明を省略する。図6(c)は第4実施の形態における閉塞部60の背面図である。 Next, a fourth embodiment will be described with reference to FIG. 6 (c). In the first embodiment, a case where the fragile portion 17 is arranged on two orthogonal virtual lines has been described. On the other hand, in the fourth embodiment, the case where the vulnerable portion 61 is arranged on the five virtual lines will be described. The same parts as those in the first embodiment are designated by the same reference numerals, and the following description will be omitted. FIG. 6C is a rear view of the closing portion 60 according to the fourth embodiment.

図6(c)に示すように、閉塞部60は、隣接する部位よりも低強度に設定される脆弱部61を備える。脆弱部61は、第1仮想線62上に設けられる第1脆弱部67と、第2仮想線63上に設けられる第2脆弱部68と、第3仮想線64上に設けられる第3脆弱部69と、第4仮想線65上に設けられる第4脆弱部70と、第5仮想線66上に設けられる第5脆弱部71と、第1脆弱部67及び第3脆弱部69と第2脆弱部68との間にそれぞれ配置される連結部72と、を備える。 As shown in FIG. 6C, the closing portion 60 includes a fragile portion 61 that is set to have a lower strength than the adjacent portion. The vulnerable part 61 includes a first vulnerable part 67 provided on the first virtual line 62, a second vulnerable part 68 provided on the second virtual line 63, and a third vulnerable part provided on the third virtual line 64. 69, the 4th vulnerable part 70 provided on the 4th virtual line 65, the 5th vulnerable part 71 provided on the 5th virtual line 66, the 1st vulnerable part 67, the 3rd vulnerable part 69, and the 2nd vulnerable part. A connecting portion 72, which is arranged between the portion 68 and the portion 68, is provided.

第1脆弱部67、第2脆弱部68、第3脆弱部69、第4脆弱部70及び第5脆弱部71は、閉塞部60を布厚方向に貫通する部位であり、強度が0である。第1仮想線62と第3仮想線64とは平行に設けられ、第1仮想線62及び第3仮想線64と第2仮想線63とは互いに垂直に交わる。略矩形状の閉塞部60の各辺に対してそれぞれ第1仮想線62、第2仮想線63及び第3仮想線64が平行に設けられ、第4仮想線65及び第5仮想線66が略矩形状の閉塞部60の対角線上に設けられる。 The first fragile portion 67, the second fragile portion 68, the third fragile portion 69, the fourth fragile portion 70, and the fifth fragile portion 71 are portions that penetrate the closed portion 60 in the cloth thickness direction, and have zero strength. .. The first virtual line 62 and the third virtual line 64 are provided in parallel, and the first virtual line 62, the third virtual line 64, and the second virtual line 63 intersect each other perpendicularly. The first virtual line 62, the second virtual line 63, and the third virtual line 64 are provided in parallel to each side of the substantially rectangular closing portion 60, and the fourth virtual line 65 and the fifth virtual line 66 are substantially omitted. It is provided on the diagonal line of the rectangular closing portion 60.

閉塞部60の中央に上下に延びて第2脆弱部68が設けられ、その第2脆弱部68の両端側に第1脆弱部67及び第3脆弱部69が設けられる。第1脆弱部67及び第3脆弱部69の両端に、第4脆弱部70及び第5脆弱部71の端部が連続して設けられる。 A second vulnerable portion 68 extends vertically in the center of the closed portion 60, and a first vulnerable portion 67 and a third vulnerable portion 69 are provided on both ends of the second vulnerable portion 68. The ends of the fourth fragile portion 70 and the fifth fragile portion 71 are continuously provided at both ends of the first fragile portion 67 and the third fragile portion 69.

閉塞部60は、第1脆弱部67、第2脆弱部68、第3脆弱部69、第4脆弱部70及び第5脆弱部71により分割される分割部60a,60b,60c,60dを備える。分割部60a,60b,60c,60dはそれぞれ1辺がパッド本体11(図1参照)に支持される。 The closing portion 60 includes divided portions 60a, 60b, 60c, 60d divided by the first vulnerable portion 67, the second vulnerable portion 68, the third vulnerable portion 69, the fourth vulnerable portion 70, and the fifth vulnerable portion 71. One side of each of the divided portions 60a, 60b, 60c, and 60d is supported by the pad body 11 (see FIG. 1).

連結部72は、分割部60c,60dの角をそれぞれ分割部60a,60bに連結する部位である。これにより、分割部60a,60b,60c,60dが捲れたり折れ曲がったりすることを防止できる。連結部72は、線状の第2脆弱部68の延長線上の部位なので、分割部60a,60b,60c,60dより低強度である。 The connecting portion 72 is a portion that connects the corners of the divided portions 60c and 60d to the divided portions 60a and 60b, respectively. As a result, it is possible to prevent the divided portions 60a, 60b, 60c, and 60d from being rolled up or bent. Since the connecting portion 72 is a portion on the extension line of the linear second fragile portion 68, the strength is lower than that of the divided portions 60a, 60b, 60c, and 60d.

以上のように脆弱部61が設けられる第4実施の形態も第1実施の形態と同様に、脆弱部61を起点に閉塞部60を破ったり押し広げたりして、閉塞部60に孔を容易に設けることができる。これにより、閉塞部60をカッターナイフ等の工具を用いて除去する場合に比べて、作業工程を簡素化できる。 Similar to the first embodiment, the fourth embodiment in which the fragile portion 61 is provided as described above also easily breaks or expands the closed portion 60 starting from the fragile portion 61 to easily make a hole in the closed portion 60. Can be provided in. As a result, the work process can be simplified as compared with the case where the closed portion 60 is removed by using a tool such as a cutter knife.

閉塞部60を押して、第2脆弱部68の延長線上の破れ易い連結部72が破れると、1辺のみがパッド本体11に支持される分割部60a,60b,60c,60dが開く。これにより、閉塞部60に設けられる孔を貫通孔15と略同一の大きさにできる。よって、少ない力で閉塞部60に設けられる孔を大きくできるので、作業効率を向上できる。 When the closing portion 60 is pushed and the easily torn connecting portion 72 on the extension line of the second fragile portion 68 is broken, the divided portions 60a, 60b, 60c, 60d in which only one side is supported by the pad body 11 opens. As a result, the hole provided in the closing portion 60 can be made substantially the same size as the through hole 15. Therefore, the hole provided in the closing portion 60 can be enlarged with a small force, so that the work efficiency can be improved.

次に図6(d)を参照して、第5実施の形態について説明する。第1実施の形態では、矩形状の閉塞部16に十字状の脆弱部17が配置される場合について説明した。これに対し第5実施の形態では、矩形状の閉塞部80にX字状の脆弱部81が配置される場合について説明する。なお、第1実施の形態と同一の部分については、同一の符号を付して以下の説明を省略する。図6(d)は第5実施の形態における閉塞部80の背面図である。 Next, a fifth embodiment will be described with reference to FIG. 6 (d). In the first embodiment, the case where the cross-shaped fragile portion 17 is arranged in the rectangular closed portion 16 has been described. On the other hand, in the fifth embodiment, the case where the X-shaped fragile portion 81 is arranged in the rectangular closed portion 80 will be described. The same parts as those in the first embodiment are designated by the same reference numerals, and the following description will be omitted. FIG. 6D is a rear view of the closing portion 80 according to the fifth embodiment.

図6(d)に示すように、閉塞部80は、隣接する部位よりも低強度に設定される脆弱部81を備える。脆弱部81は、第1仮想線82上に設けられる複数の第1脆弱部84と、第2仮想線83上に設けられる複数の第2脆弱部85と、複数の第1脆弱部84及び第2脆弱部85の間にそれぞれ配置される複数の連結部86とを備える。 As shown in FIG. 6D, the closing portion 80 includes a fragile portion 81 that is set to have a lower strength than the adjacent portion. The vulnerable parts 81 include a plurality of first vulnerable parts 84 provided on the first virtual line 82, a plurality of second vulnerable parts 85 provided on the second virtual line 83, and a plurality of first vulnerable parts 84 and a first vulnerable part 84. It is provided with a plurality of connecting portions 86, which are respectively arranged between the vulnerable portions 85.

第1脆弱部84及び第2脆弱部85は、閉塞部80を布厚方向に貫通する円形状の部位であり、強度が0である。第1仮想線82及び第2仮想線83は、略矩形状の閉塞部80の対角線上に設けられる。これにより、略矩形状の閉塞部80に対して第1脆弱部84及び第2脆弱部85がX字状に配置される。 The first fragile portion 84 and the second fragile portion 85 are circular portions penetrating the closed portion 80 in the cloth thickness direction, and have a strength of 0. The first virtual line 82 and the second virtual line 83 are provided on the diagonal line of the substantially rectangular closing portion 80. As a result, the first fragile portion 84 and the second fragile portion 85 are arranged in an X shape with respect to the substantially rectangular closed portion 80.

閉塞部80は、X字状の脆弱部81により分割される分割部80a,80b,80c,80dを備える。分割部80a,80b,80c,80dはそれぞれ1辺がパッド本体11(図1参照)に支持される。 The closing portion 80 includes divided portions 80a, 80b, 80c, and 80d that are divided by the X-shaped fragile portion 81. One side of each of the divided portions 80a, 80b, 80c, and 80d is supported by the pad body 11 (see FIG. 1).

連結部86は、分割部80a,80b,80c,80dの対向する辺をそれぞれ互いに連結する部位である。これにより、分割部80a,80b,80c,80dが捲れたり折れ曲がったりすることを防止できる。連結部86は、第1脆弱部84及び第2脆弱部85の間の部位なので、第1脆弱部84及び第2脆弱部85を起点に破れ易く、分割部80a,80b,80c,80dよりも低強度である。 The connecting portion 86 is a portion that connects the opposing sides of the divided portions 80a, 80b, 80c, and 80d to each other. As a result, it is possible to prevent the divided portions 80a, 80b, 80c, and 80d from being rolled up or bent. Since the connecting portion 86 is a portion between the first fragile portion 84 and the second fragile portion 85, it is easily torn starting from the first fragile portion 84 and the second fragile portion 85, and is more easily broken than the divided portions 80a, 80b, 80c, 80d. Low strength.

このように、第1脆弱部84及び第2脆弱部85と連結部86とを交互に破線状に設けたX字状の脆弱部81を有する第5実施の形態も第1実施の形態と同様に、脆弱部81を起点に閉塞部80を破ったり押し広げたりして、閉塞部80に孔を容易に設けることができる。これにより、閉塞部80をカッターナイフ等の工具を用いて除去する場合に比べて、作業工程を簡素化できる。 As described above, the fifth embodiment having the X-shaped fragile portion 81 in which the first fragile portion 84, the second fragile portion 85, and the connecting portion 86 are alternately provided in a broken line shape is also the same as the first embodiment. In addition, a hole can be easily provided in the closed portion 80 by breaking or expanding the closed portion 80 starting from the fragile portion 81. As a result, the work process can be simplified as compared with the case where the closed portion 80 is removed by using a tool such as a cutter knife.

脆弱部81がX字状に設けられるので、閉塞部80を押して、分割部80a,80b,80c,80dよりも低強度の連結部86が破れると、1辺のみがパッド本体11に支持される分割部80a,80b,80c,80dが開く。これにより、閉塞部80に設けられる孔を貫通孔15と略同一の大きさにできる。よって、少ない力で閉塞部80に設けられる孔を大きくできるので、作業効率を向上できる。 Since the fragile portion 81 is provided in an X shape, when the closing portion 80 is pushed and the connecting portion 86 having a strength lower than that of the divided portions 80a, 80b, 80c, 80d is broken, only one side is supported by the pad body 11. The split portions 80a, 80b, 80c, 80d open. As a result, the hole provided in the closing portion 80 can be made substantially the same size as the through hole 15. Therefore, the hole provided in the closing portion 80 can be enlarged with a small force, so that the work efficiency can be improved.

次に図6(e)を参照して、第6実施の形態について説明する。第1実施の形態では、閉塞部16に脆弱部17が線状に設けられる場合について説明した。これに対し第6実施の形態では、閉塞部90に脆弱部91が円形状に設けられる場合について説明する。なお、第1実施の形態と同一の部分については、同一の符号を付して以下の説明を省略する。図6(e)は第6実施の形態における閉塞部90の背面図である。 Next, the sixth embodiment will be described with reference to FIG. 6 (e). In the first embodiment, the case where the fragile portion 17 is linearly provided in the closed portion 16 has been described. On the other hand, in the sixth embodiment, the case where the fragile portion 91 is provided in the closed portion 90 in a circular shape will be described. The same parts as those in the first embodiment are designated by the same reference numerals, and the following description will be omitted. FIG. 6E is a rear view of the closing portion 90 in the sixth embodiment.

図6(e)に示すように、閉塞部90は、中央に円形状の脆弱部91を備える。脆弱部91は不織布から構成され、脆弱部91以外の閉塞部90は織編物から構成される。これにより、脆弱部91は、隣接する部位よりも低強度に設定される。 As shown in FIG. 6 (e), the closing portion 90 includes a circular fragile portion 91 in the center. The fragile portion 91 is made of a non-woven fabric, and the closed portion 90 other than the fragile portion 91 is made of a woven or knitted fabric. As a result, the fragile portion 91 is set to have a lower strength than the adjacent portion.

なお、この場合に限らず、例えば、脆弱部91を不織布のみから構成し、脆弱部91以外の閉塞部90を、合成樹脂や金属等のワイヤを織り込んだり接着した不織布から構成する等して、脆弱部91をそれ以外の部位よりも低強度の素材により構成することは可能である。また、脆弱部91と、それ以外の閉塞部90とを同一の素材から構成し、脆弱部91の布厚を隣接する部位(脆弱部91以外の閉塞部90)の布厚よりも薄くすることで、隣接する部位よりも脆弱部91を低強度に設定することが可能である。 Not limited to this case, for example, the fragile portion 91 is composed of only a non-woven fabric, and the closed portion 90 other than the fragile portion 91 is composed of a non-woven fabric in which a wire such as synthetic resin or metal is woven or adhered. The fragile portion 91 can be made of a material having a lower strength than the other portions. Further, the fragile portion 91 and the other closed portion 90 are made of the same material, and the cloth thickness of the fragile portion 91 is made thinner than the cloth thickness of the adjacent portion (closed portion 90 other than the fragile portion 91). Therefore, it is possible to set the fragile portion 91 to have a lower strength than the adjacent portion.

第6実施の形態では、閉塞部90を押すと、脆弱部91が破け、さらに脆弱部91を起点に閉塞部90が破けたり押し広げられたりして、閉塞部90に孔を容易に設けることができる。これにより、第1実施の形態と同様に、閉塞部90をカッターナイフ等の工具を用いて除去する場合に比べて、作業工程を簡素化できる。 In the sixth embodiment, when the closing portion 90 is pushed, the fragile portion 91 is torn, and further, the closing portion 90 is torn or expanded from the fragile portion 91 as a starting point, so that a hole is easily provided in the closing portion 90. Can be done. As a result, as in the first embodiment, the work process can be simplified as compared with the case where the closed portion 90 is removed by using a tool such as a cutter knife.

以上、実施の形態に基づき本発明を説明したが、本発明は上記各実施の形態に何ら限定されるものではなく、本発明の趣旨を逸脱しない範囲内で種々の改良変形が可能であることは容易に推察できるものである。例えば、シートパッド10やフレーム5、受部材5a、フック20、閉塞部16,40,50,60,80,90、脆弱部17,41,51,61,81,91等の形状は一例であり、種々の形状を採用することは当然である。例えば、脆弱部91を多角形状や楕円形状、長円形状に形成することが可能である。 Although the present invention has been described above based on the embodiments, the present invention is not limited to the above embodiments, and various improvements and modifications can be made without departing from the spirit of the present invention. Can be easily inferred. For example, the shapes of the seat pad 10, the frame 5, the receiving member 5a, the hook 20, the closing portions 16, 40, 50, 60, 80, 90, the fragile portions 17, 41, 51, 61, 81, 91 and the like are examples. , It is natural to adopt various shapes. For example, the fragile portion 91 can be formed into a polygonal shape, an elliptical shape, or an oval shape.

上記第1実施の形態では、弾力性のある軟質ポリウレタンフォーム等の発泡合成樹脂からパッド本体11が構成される場合について説明したが、必ずしもこれに限られるものではなく、パッド本体11の材質は適宜変更可能である。発泡合成樹脂以外の他の材質としては、例えば、合成樹脂製等の繊維をウレタン等のバインダで硬化(結合)したもの、合成樹脂製の繊維を熱で溶融して互いに溶着させたもの等が挙げられる。 In the first embodiment, the case where the pad body 11 is composed of a foamed synthetic resin such as elastic flexible polyurethane foam has been described, but the present invention is not necessarily limited to this, and the material of the pad body 11 is appropriately used. It can be changed. Examples of materials other than the foamed synthetic resin include those obtained by curing (bonding) synthetic resin fibers with a binder such as urethane, and those obtained by melting synthetic resin fibers with heat and welding them to each other. Can be mentioned.

上記第1実施の形態では、シートバック3の背面にフック20を取り付けるための貫通孔15をパッド本体11に設け、その貫通孔15を閉塞部16で塞ぐ場合について説明したが、必ずしもこれに限られるものではない。アームレストやエアバック等を設けるためにパッド本体11に設けた貫通孔に本発明を適用することは当然可能である。また、シートバック3のパッド本体11の貫通孔に限らず、シートクッション2のパッド本体に設けた貫通孔に本発明を適用することも可能である。なお、シートクッション2のパッド本体の貫通孔としては、例えば、ウォークインレバーやエアバックを設けるための貫通孔が挙げられる。 In the first embodiment, a case where a through hole 15 for attaching the hook 20 to the back surface of the seat back 3 is provided in the pad main body 11 and the through hole 15 is closed by the closing portion 16 has been described, but the present invention is not necessarily limited to this. It is not something that can be done. Of course, it is possible to apply the present invention to a through hole provided in the pad body 11 for providing an armrest, an airbag, or the like. Further, the present invention can be applied not only to the through hole of the pad body 11 of the seat back 3 but also to the through hole provided in the pad body of the seat cushion 2. Examples of the through hole of the pad body of the seat cushion 2 include a through hole for providing a walk-in lever and an airbag.

フック20以外を取り付けるための貫通孔以外に本発明を適用した場合にも、貫通孔に挿入する部材(挿入部材)を、パッド本体の表面側から裏面側へ貫通孔に挿入することが好ましい。挿入部材をパッド本体の裏面側から表面側に挿入すると、挿入部材で押されて破れた閉塞部が乗物用シート1の外側へ飛び出して見栄えが悪くなる。これに対して、挿入部材をパッド本体の表面側から裏面側に挿入することで、挿入部材で押されて破れた閉塞部を乗物用シート1の内側へ収容でき、見栄えを良くできる。 Even when the present invention is applied to a through hole for attaching a hook other than the hook 20, it is preferable to insert the member (insertion member) to be inserted into the through hole into the through hole from the front surface side to the back surface side of the pad body. When the insertion member is inserted from the back surface side to the front surface side of the pad body, the closed portion pushed and torn by the insertion member pops out to the outside of the vehicle seat 1 and the appearance is deteriorated. On the other hand, by inserting the insertion member from the front surface side to the back surface side of the pad body, the closed portion pushed and torn by the insertion member can be accommodated inside the vehicle seat 1 and the appearance can be improved.

また、フック20と受部材5aとで閉塞部16を挟むように、挿入部材で押されて破れた閉塞部を、挿入部材と、挿入部材をフレームに固定するための受部材との間で挟むことが可能である。これにより、挟まれた閉塞部やパッド本体を破れ難くできると共に、パッド本体と挿入部材や受部材との擦れ合いによる異音の発生を抑制できる。 Further, the closing portion 16 that is pushed and torn by the inserting member is sandwiched between the inserting member and the receiving member for fixing the inserting member to the frame so that the closing portion 16 is sandwiched between the hook 20 and the receiving member 5a. It is possible. As a result, it is possible to prevent the sandwiched closed portion and the pad body from being torn, and it is possible to suppress the generation of abnormal noise due to the rubbing between the pad body and the inserting member or the receiving member.

なお、挿入部材と受部材との間で閉塞部を挟まなく構成することも可能である。この場合には、閉塞部が挿入部材に押されて破れるので、破れた閉塞部で挿入部材を覆うことができる。破れた閉塞部は貫通孔の内周面に対して比較的自由に相対移動できるので、貫通孔の内周面と挿入部材とを擦れ合い難くできる。その結果、貫通孔の内周面と挿入部材との擦れ合いによる異音を抑制できると共に、貫通孔の内周面が削れることを抑制できる。 It is also possible to configure the insertion member and the receiving member without sandwiching the closing portion. In this case, since the closed portion is pushed by the inserting member and torn, the inserted member can be covered with the torn closed portion. Since the torn closed portion can move relatively freely with respect to the inner peripheral surface of the through hole, it is possible to prevent the inner peripheral surface of the through hole from rubbing against the insertion member. As a result, it is possible to suppress abnormal noise due to rubbing between the inner peripheral surface of the through hole and the insertion member, and it is possible to suppress scraping of the inner peripheral surface of the through hole.

上記各実施の形態では、貫通孔15の全部を閉塞部16,40,50,60,80,90で塞ぐ場合について説明したが、必ずしもこれに限られるものではなく、貫通孔15の少なくとも一部を塞ぐように閉鎖部を設けることは当然可能である。 In each of the above embodiments, the case where the entire through hole 15 is closed by the closing portions 16, 40, 50, 60, 80, 90 has been described, but the present invention is not necessarily limited to this, and at least a part of the through hole 15 is used. Of course, it is possible to provide a closure so as to block the.

上記第1〜5実施の形態では、複数の仮想線上に脆弱部17,41,51,61,81を設ける場合について説明したが、必ずしもこれに限られるものではなく、1本の仮想線上に脆弱部を設けることは当然可能である。この場合、直線状の仮想線上に脆弱部を設けた場合には、上記各実施の形態に比べて、脆弱部を起点に閉塞部を破いたり押し広げたりし難い。しかし、U字状や円形状の仮想線上に脆弱部を設けることで、脆弱部を起点に閉塞部を破いたり押し広げたりし易くできる。 In the above-described first to fifth embodiments, the case where the vulnerable portions 17, 41, 51, 61, 81 are provided on a plurality of virtual lines has been described, but the present invention is not necessarily limited to this, and the vulnerabilities are vulnerable on one virtual line. Of course, it is possible to provide a part. In this case, when the fragile portion is provided on the linear virtual line, it is difficult to break or expand the fragile portion starting from the fragile portion as compared with each of the above-described embodiments. However, by providing the fragile portion on the U-shaped or circular virtual line, it is possible to easily break or expand the closed portion starting from the fragile portion.

上記第1実施の形態では、予め脆弱部17を設けた補強材12をパッド本体11に一体化してシートパッド10を成形する場合について説明したが、必ずしもこれに限られるものではなく、補強材12をパッド本体11に一体化した後に、カッターナイフ等の工具を用いて、閉塞部16に脆弱部17を設けることは当然可能である。 In the first embodiment, the case where the reinforcing material 12 provided with the fragile portion 17 in advance is integrated with the pad body 11 to form the seat pad 10 has been described, but the present invention is not necessarily limited to this, and the reinforcing material 12 is not necessarily limited to this. It is naturally possible to provide the fragile portion 17 in the closed portion 16 by using a tool such as a cutter knife after integrating the fragile portion 17 into the pad main body 11.

上記各実施の形態で説明した脆弱部17,41,51,61,81,91に限らず、脆弱部は隣接する部位よりも低強度に設定されれば良い。脆弱部17,41,51,61,81,91以外の脆弱部としては、例えば、ミシン目や、補強材の表面を凹ませた溝、補強材の内部を除いた中空部分が挙げられる。また、第1脆弱部17a,44,55,67や第2脆弱部17b,45,56,68、第3脆弱部57,69、第4脆弱部70、第5脆弱部71は、図2、図6(a)、図6(b)及び図6(c)に示す幅(各仮想線に対して垂直な寸法)に限らず、その幅は適宜変更可能である。例えば、幅がほぼ0となる切れ目を、第1脆弱部や第2脆弱部、第3脆弱部、第4脆弱部、第5脆弱部とすることは当然可能である。 Not limited to the fragile portions 17, 41, 51, 61, 81, 91 described in each of the above embodiments, the fragile portions may be set to have lower strength than the adjacent portions. Examples of the fragile portion other than the fragile portions 17, 41, 51, 61, 81, 91 include perforations, grooves in which the surface of the reinforcing material is recessed, and hollow portions excluding the inside of the reinforcing material. The first vulnerable parts 17a, 44, 55, 67, the second vulnerable parts 17b, 45, 56, 68, the third vulnerable parts 57, 69, the fourth vulnerable part 70, and the fifth vulnerable part 71 are shown in FIG. The width is not limited to the width shown in FIGS. 6 (a), 6 (b) and 6 (c) (dimensions perpendicular to each virtual line), and the width can be changed as appropriate. For example, it is naturally possible to make a break having a width of almost 0 as a first vulnerable part, a second vulnerable part, a third vulnerable part, a fourth vulnerable part, and a fifth vulnerable part.

また、上記各実施の形態のいずれかの一部または全部を、他の実施の形態の一部または全部と組み合わせることは可能である。また、上記各実施の形態のうちの一部の構成を省略することも可能である。例えば、上記第1,2,4実施の形態における脆弱部17,41,61を、上記第3,5実施の形態における脆弱部51,81のように破線状に配置することが可能である。上記第1〜5実施の形態における脆弱部17,41,51,61,81を、上記第6実施の形態における脆弱部91のように隣接する部位よりも低強度の素材で構成したり、布厚を薄くしたりすることが可能である。 It is also possible to combine some or all of any of the above embodiments with some or all of the other embodiments. It is also possible to omit some configurations of each of the above embodiments. For example, the fragile portions 17, 41, 61 in the first, second, and fourth embodiments can be arranged in a broken line like the fragile portions 51, 81 in the third and fifth embodiments. The fragile portions 17, 41, 51, 61, 81 in the first to fifth embodiments are made of a material having a lower strength than the adjacent portions such as the fragile portions 91 in the sixth embodiment, or cloth. It is possible to reduce the thickness.

1 乗物用シート
5 フレーム
5a 受部材
10 シートパッド
11 パッド本体
11a 表面
11b 裏面
12 補強材
15 貫通孔
16,40,50,60,80,90 閉塞部
17,41,51,61,81,91 脆弱部
17a,55,67,84 第1脆弱部(貫通部分)
17b,56,68,85 第2脆弱部(貫通部分)
17c,58,72,86 連結部
18,42,52,62,82 第1仮想線(仮想線)
19,43,53,63,83 第2仮想線(仮想線)
20 フック(挿入部材)
30 金型
36,37 挟持部
38 キャビティ
54,64 第3仮想線(仮想線)
57,69 第3脆弱部(貫通部分)
65 第4仮想線(仮想線)
66 第5仮想線(仮想線)
70 第4脆弱部(貫通部分)
71 第5脆弱部(貫通部分)
1 Vehicle seat 5 Frame 5a Receiving member 10 Seat pad 11 Pad body 11a Front surface 11b Back surface 12 Reinforcing material 15 Through hole 16, 40, 50, 60, 80, 90 Blocking part 17, 41, 51, 61, 81, 91 Vulnerable Department
17a, 55, 67, 84 1st fragile part (penetration part)
17b, 56, 68, 85 2nd vulnerable part (penetration part)
17c, 58, 72, 86 Connecting parts 18, 42, 52, 62, 82 First virtual line (virtual line)
19, 43, 53, 63, 83 Second virtual line (virtual line)
20 hook (insertion member)
30 Mold 36,37 Holding part 38 Cavity 54,64 Third virtual line (virtual line)
57,69 Third vulnerable part (penetration part)
65 4th virtual line (virtual line)
66 5th virtual line (virtual line)
70 4th vulnerable part (penetration part)
71 Fifth vulnerable part (penetration part)

Claims (6)

表面と裏面とを有するパッド本体と、
前記パッド本体の前記裏面に一体化される補強材とを備え、
前記パッド本体は、前記表面から前記裏面に貫通する貫通孔を備え、
前記補強材は、前記貫通孔の少なくとも一部を塞ぐ閉塞部を備え、
前記閉塞部は、隣接する部位よりも低強度に設定される脆弱部を備え
前記閉塞部が前記貫通孔の内側で前記脆弱部により複数に分割されることを特徴とするシートパッド。
A pad body having a front surface and a back surface,
A reinforcing material integrated with the back surface of the pad body is provided.
The pad body has a through hole penetrating from the front surface to the back surface.
The reinforcing material includes a closing portion that closes at least a part of the through hole.
The closed portion has a fragile portion that is set to have a lower strength than the adjacent portion .
A seat pad characterized in that the closed portion is divided into a plurality of parts by the fragile portion inside the through hole.
前記脆弱部は
前記閉塞部を貫通する複数の貫通部分と、
前記脆弱部により複数に分割された前記閉塞部同士を前記貫通部分の間で連結する連結部と、を備えて仮想線上設けられことを特徴とする請求項1記載のシートパッド。
The fragile portion is,
A plurality of penetrating portions penetrating the closed portion,
Seat pad according to claim 1, wherein the Ru provided to the virtual line provided with a connecting portion connecting between the closure portions divided into a plurality by the fragile portion of the penetrating portion.
請求項1又は2に記載のシートパッドと、
前記シートパッドが支持されるフレームと、
前記閉塞部を貫通して前記貫通孔に挿入される挿入部材とを備え、
前記フレームは、前記貫通孔に挿入された前記挿入部材が取り付けられる受部材を備えることを特徴とする乗物用シート。
The seat pad according to claim 1 or 2,
The frame on which the seat pad is supported and
An insertion member that penetrates the closed portion and is inserted into the through hole is provided.
The frame is a vehicle seat including a receiving member to which the insertion member inserted into the through hole is attached.
前記補強材は、前記挿入部材が前記受部材に取り付けられた状態において、前記挿入部材と前記受部材との間に挟まれることを特徴とする請求項3記載の乗物用シート。 The vehicle seat according to claim 3, wherein the reinforcing member is sandwiched between the inserting member and the receiving member in a state where the inserting member is attached to the receiving member. パッド本体の裏面に補強材が一体化されるシートパッドを製造するシートパッドの製造方法であって、
前記補強材を金型に保持させる保持工程と、
前記補強材が保持された前記金型のキャビティ内に材料を投入し前記パッド本体を成形して前記パッド本体と前記補強材を一体化する成形工程とを備え、
前記補強材は、隣接する部位よりも低強度に設定される脆弱部を備え、
前記金型は、前記キャビティ内に突出して前記保持工程で前記脆弱部およびその周囲を挟む挟持部を備え
前記挟持部に挟まれた前記補強材が、前記挟持部の周縁よりも内側で前記脆弱部により複数に分割されることを特徴とするシートパッドの製造方法。
It is a manufacturing method of a seat pad that manufactures a seat pad in which a reinforcing material is integrated on the back surface of the pad body.
A holding step of holding the reinforcing material in the mold and
It is provided with a molding step of putting a material into the cavity of the mold in which the reinforcing material is held, molding the pad body, and integrating the pad body and the reinforcing material.
The reinforcing material has a fragile portion that is set to have a lower strength than the adjacent portion.
The mold is provided with a holding portion that protrudes into the cavity and sandwiches the fragile portion and its surroundings in the holding step.
A method for manufacturing a seat pad, wherein the reinforcing material sandwiched between the sandwiching portions is divided into a plurality of parts by the fragile portion inside the peripheral edge of the sandwiching portion.
前記脆弱部は、
前記補強材を貫通する複数の貫通部分と、
前記挟持部の周縁よりも内側で前記脆弱部により複数に分割された前記補強材同士を前記貫通部分の間で連結する連結部と、を備えて仮想線上に設けられることを特徴とする請求項5記載のシートパッドの製造方法。
The vulnerable part is
A plurality of penetrating portions penetrating the reinforcing material,
A claim that the reinforcing material is provided on an imaginary line with a connecting portion for connecting the reinforcing members divided into a plurality of pieces by the fragile portion inside the peripheral edge of the sandwiching portion between the penetrating portions. 5. The method for manufacturing a seat pad according to 5.
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