JP5488167B2 - Load detector mounting structure - Google Patents

Load detector mounting structure Download PDF

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Publication number
JP5488167B2
JP5488167B2 JP2010100912A JP2010100912A JP5488167B2 JP 5488167 B2 JP5488167 B2 JP 5488167B2 JP 2010100912 A JP2010100912 A JP 2010100912A JP 2010100912 A JP2010100912 A JP 2010100912A JP 5488167 B2 JP5488167 B2 JP 5488167B2
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Japan
Prior art keywords
sliding contact
pad member
bent portion
concave groove
load
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JP2010100912A
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Japanese (ja)
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JP2011230588A (en
Inventor
摂 宅間
孝市 中山
弘巳 近藤
和也 田中
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Aisin Corp
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Aisin Seiki Co Ltd
Aisin Corp
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Priority to JP2010100912A priority Critical patent/JP5488167B2/en
Application filed by Aisin Seiki Co Ltd, Aisin Corp filed Critical Aisin Seiki Co Ltd
Priority to EP10839246.5A priority patent/EP2517927B1/en
Priority to BR112012018816-0A priority patent/BR112012018816B1/en
Priority to EP10839245.7A priority patent/EP2517926B1/en
Priority to PCT/JP2010/072471 priority patent/WO2011078013A1/en
Priority to CN201080057675.XA priority patent/CN102666194B/en
Priority to KR1020127017747A priority patent/KR101407742B1/en
Priority to BR112012015132-0A priority patent/BR112012015132B1/en
Priority to PCT/JP2010/072470 priority patent/WO2011078012A1/en
Priority to CN201080055932.6A priority patent/CN102652074B/en
Priority to KR1020127016184A priority patent/KR101374089B1/en
Publication of JP2011230588A publication Critical patent/JP2011230588A/en
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Publication of JP5488167B2 publication Critical patent/JP5488167B2/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60NSEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/002Seats provided with an occupancy detection means mounted therein or thereon
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60NSEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/58Seat coverings
    • B60N2/5816Seat coverings attachments thereof
    • B60N2/5825Seat coverings attachments thereof by hooks, staples, clips, snap fasteners or the like

Description

本発明は、車両のシートに設置して乗員の着座状態を検知する荷重検知装置の取付構造に関する。   The present invention relates to a mounting structure for a load detection device that is installed on a vehicle seat and detects a seated state of an occupant.

従来、自動車に装備されたシートベルトやエアバッグ等の各種安全装置の性能を向上させるため、車両シートに乗員が着座している状態を検知してこれらの安全装置をコントロールする技術がある。そしてこのような乗員の着座状態を検知するのに適する荷重検知装置として、薄くて可撓性があるフィルム状のメンブレンスイッチがある。車両シートの座部や背もたれ部は、一般にウレタン等で構成されたパッド部材に、布やビニールレザー、皮革等の表皮部材を被せて構成している。具体的には、パッド部材の表面に備えた凹溝に表皮部材を引き込み、引き込んだ表皮部材をパッド部材の内部で凹溝の近傍に配置された係留部材(ワイヤー)に固定具(固定環)によって固定し、パッド部材の表面の形状に表皮部材が沿うように構成している。   2. Description of the Related Art Conventionally, in order to improve the performance of various safety devices such as seat belts and airbags installed in automobiles, there is a technique for detecting a state in which an occupant is seated on a vehicle seat and controlling these safety devices. As a load detection device suitable for detecting the seating state of such an occupant, there is a thin and flexible film-like membrane switch. The seat portion and the backrest portion of the vehicle seat are configured by covering a pad member generally made of urethane or the like with a skin member such as cloth, vinyl leather, or leather. Specifically, the skin member is pulled into the groove provided on the surface of the pad member, and the pulled skin member is fixed to a mooring member (wire) disposed in the vicinity of the groove inside the pad member (fixing ring). The skin member is configured to follow the shape of the surface of the pad member.

このように構成した車両シートでは、凹溝が車両シートの座部のパッド部材の着座部に位置していることが多いので、荷重検知装置(メンブレンスイッチ)の各検知部の間に設けられ検知部の信号を伝達する導通部が、凹溝を横切る状態となる。導通部が凹溝を横切った状態で車両シートに固定され取付けられると車両シートに荷重が加わった際に、凹溝の変形に伴い導通部が変形され断線する虞がある。そこで断線を防止するため導通部はゆとりをもって凹溝部に配設され、たるんだ分が凹溝に挿入されている。しかし車両シートに取付けられる場合に、荷重検知装置はパッド部材の表面と表皮部材との間に配置され、表皮部材が跨った凹溝に引き込まれるのと一緒に、導通部が凹溝入口の位置で急角度に折れ曲がる状態となることがある。そのような状態で長期間使用されると、荷重検知装置の導通部が断線するおそれがある。   In the vehicle seat configured as described above, since the concave groove is often located in the seating portion of the pad member of the seat portion of the vehicle seat, the detection is provided between the detection portions of the load detection device (membrane switch). The conduction part that transmits the signal of the part is in a state of crossing the concave groove. If the conductive portion is fixed and attached to the vehicle seat in a state of crossing the concave groove, when the load is applied to the vehicle seat, the conductive portion may be deformed and disconnected due to the deformation of the concave groove. Therefore, in order to prevent disconnection, the conducting portion is disposed in the concave groove with a space, and the slack is inserted into the concave groove. However, when mounted on the vehicle seat, the load detection device is disposed between the surface of the pad member and the skin member, and the conductive portion is pulled into the groove grooved across the skin member, and the conducting portion is positioned at the groove entrance. It may be in a state of bending at a steep angle. If it is used for a long time in such a state, there is a possibility that the conduction part of the load detection device is disconnected.

そのため、このような断線を防止するため考えられた例えば特許文献1に開示する着座センサ取付構造によると、導通部としての配線が横切る凹溝の底部とパッド部表面とに亘って緩やかな傾斜部を設け、配線を傾斜部に配置している。これによりパッド部表面から傾斜部に向かって急角度で屈曲するような取付け状態を避けることができる。   Therefore, according to the seating sensor mounting structure disclosed in, for example, Patent Document 1, which has been considered to prevent such disconnection, a gently inclined portion extends between the bottom of the groove and the pad portion surface that the wiring as the conducting portion crosses. And the wiring is arranged on the inclined portion. Thereby, it is possible to avoid an attachment state in which the pad portion is bent at a steep angle from the surface of the pad portion toward the inclined portion.

特許第3781957号公報Japanese Patent No. 3781957

しかしながら、例えば特許文献1に示す従来技術においては荷重が入力されパッド部材に変形が生じるとパッド部材の表面に固定され吊り溝内に配設されて吊り溝の底部と当接する信号線の折り返し部には底部から反力が付与される。そして反力によって信号線は局所的に屈曲変形され変形部に応力が生じ断線に至る虞がある。   However, in the prior art disclosed in Patent Document 1, for example, when a load is input and the pad member is deformed, the signal line folded portion fixed to the surface of the pad member and disposed in the hanging groove and contacting the bottom of the hanging groove The reaction force is applied to the bottom. The signal line is locally bent and deformed by the reaction force, and stress may be generated in the deformed portion, leading to disconnection.

本発明は上記課題に鑑みてなされたものであり、簡易で低コストな構造によって荷重検知装置の断線を防止する車両シート用の荷重検知装置の取付構造を提供することを目的とする。   The present invention has been made in view of the above problems, and an object thereof is to provide a load detection device mounting structure for a vehicle seat that prevents disconnection of the load detection device with a simple and low-cost structure.

上記の課題を解決するため、請求項1に係る発明の特徴は、車両シート用パッド部材の着座側表面に当接して該パッド部材への荷重を検知する複数の検知部と、該検知部により検知された荷重信号を出力する外部出力部と、前記複数の検知部の間および前記検知部と前記外部出力部との間を導通する導通部とを備えるフィルム状荷重検知装置を、一部に陥没形成された凹溝を有する前記パッド部材の着座側表面と該着座側表面を覆うように前記パッド部材に装着される表皮部材との間で、前記導通部の少なくとも一部を曲成形成した曲成部を前記凹溝内に挿入して前記凹溝を横切るよう配置し、前記凹溝の対向する溝内側面に前記曲成部の裏面が摺接する摺接部を設けるとともに、前記パッド部材における前記曲成部の挿入箇所に前記凹溝から該パッド部材の裏面に貫通する貫通孔を穿設し、着座荷重による前記パッド部材の上方向からの圧縮変形時に前記曲成部と前記摺接部との摺動により該曲成部を前記貫通孔内において上下方向に移動自在とし、前記貫通孔は、前記フィルム状荷重検知装置の前記曲成部の先端部が進入した状態で、前記フィルム状荷重検知装置の前記導通部の裏面が接触しないように、前記対向する摺接部の間隔より広い幅を有するように形成されていることである。 In order to solve the above-mentioned problem, the feature of the invention according to claim 1 is that a plurality of detectors that contact the seating side surface of the pad member for a vehicle seat and detect a load on the pad member, and the detector In part, a film-like load detection device including an external output unit that outputs a detected load signal, and a conduction unit that conducts between the plurality of detection units and between the detection unit and the external output unit. Between the seating side surface of the pad member having a recessed groove formed and a skin member attached to the pad member so as to cover the seating side surface, at least a part of the conductive portion is bent and formed. The bent portion is inserted into the concave groove and arranged so as to cross the concave groove, and a sliding contact portion is provided on the inner surface of the groove facing the concave groove so that the back surface of the bent portion is in sliding contact with the pad member. In the insertion portion of the bent portion in A through-hole penetrating the back surface of the pad member is formed, and the bent portion penetrates the bent portion by sliding between the bent portion and the sliding contact portion when the pad member is compressed and deformed from above by a seating load. The through hole is movable in the vertical direction in the hole, and the back surface of the conducting portion of the film load detection device does not contact with the through hole entering the bent portion of the film load detection device. Thus, it is formed to have a width wider than the interval between the opposed sliding contact portions .

上記の課題を解決するため、請求項に係る発明の特徴は、請求項において、前記貫通孔が、前記摺接部に至るまで前記凹溝の対向する溝内側面に延在して形成されていることである。 In order to solve the above-described problem, the invention according to claim 2 is characterized in that, in claim 1 , the through hole extends to the inner surface of the groove facing the concave groove until reaching the sliding contact portion. It has been done.

上記の課題を解決するため、請求項に係る発明の特徴は、請求項1または2において、前記導通部の前記摺接部と摺接する部分が前記導通部の他の部分より幅が小さく形成されていることである。
上記の課題を解決するため、請求項4に係る発明の特徴は、車両シート用パッド部材の着座側表面に当接して該パッド部材への荷重を検知する複数の検知部と、該検知部により検知された荷重信号を出力する外部出力部と、前記複数の検知部の間および前記検知部と前記外部出力部との間を導通する導通部とを備えるフィルム状荷重検知装置を、一部に陥没形成された凹溝を有する前記パッド部材の着座側表面と該着座側表面を覆うように前記パッド部材に装着される表皮部材との間で、前記導通部の少なくとも一部を曲成形成した曲成部を前記凹溝内に挿入して前記凹溝を横切るよう配置し、前記凹溝の対向する溝内側面に前記曲成部の裏面が摺接する摺接部を設けるとともに、前記パッド部材における前記曲成部の挿入箇所に前記凹溝から該パッド部材の裏面に貫通する貫通孔を穿設し、着座荷重による前記パッド部材の上方向からの圧縮変形時に前記曲成部と前記摺接部との摺動により該曲成部を前記貫通孔内において上下方向に移動自在とし、前記導通部の前記摺接部と摺接する部分が前記導通部の他の部分より幅が小さく形成されていることである。
To solve the above problems, the features of the invention according to claim 3, Oite to claim 1 or 2, width than other portions of the sliding contact portion in sliding contact portion of the conductive portion is the conductive portion It is formed small.
In order to solve the above-described problem, a feature of the invention according to claim 4 is that a plurality of detection units that contact the seating side surface of the vehicle seat pad member and detect a load on the pad member, and the detection unit In part, a film-like load detection device including an external output unit that outputs a detected load signal, and a conduction unit that conducts between the plurality of detection units and between the detection unit and the external output unit. Between the seating side surface of the pad member having a recessed groove formed and a skin member attached to the pad member so as to cover the seating side surface, at least a part of the conductive portion is bent and formed. The bent portion is inserted into the concave groove and arranged so as to cross the concave groove, and a sliding contact portion is provided on the inner surface of the groove facing the concave groove so that the back surface of the bent portion is in sliding contact with the pad member. In the insertion portion of the bent portion in A through-hole penetrating the back surface of the pad member is formed, and the bent portion penetrates the bent portion by sliding between the bent portion and the sliding contact portion when the pad member is compressed and deformed from above by a seating load. It is possible to move in the vertical direction in the hole, and the portion of the conducting portion that is in sliding contact with the sliding contact portion is formed to have a smaller width than the other portion of the conducting portion.

上記の課題を解決するため、請求項5に係る発明の特徴は、請求項1乃至請求項4のいずれか1項において、前記凹溝の溝内側面と前記着座側表面との接続部位にR部が形成されていることである。   In order to solve the above-described problem, a feature of the invention according to claim 5 is that, in any one of claims 1 to 4, an R is provided at a connection portion between the groove inner side surface of the concave groove and the seating side surface. The part is formed.

上記の課題を解決するため、請求項6に係る発明の特徴は、請求項1乃至請求項5のいずれか1項において、前記導通部を前記曲成形成し前記摺接部に当接させて取り付けたときに、前記凹溝を挟む2つの前記検知部のピッチが規定値となるように、前記2つの検知部間の前記導通部の長さが設定されていることである。   In order to solve the above-described problem, the invention according to claim 6 is characterized in that, in any one of claims 1 to 5, the conductive portion is formed to bend and contact the sliding contact portion. The length of the conduction part between the two detection parts is set so that the pitch of the two detection parts sandwiching the concave groove becomes a specified value when attached.

上記のように構成した請求項1に係る発明によれば、乗員の着座等によりパッド部材に大荷重が入力されてパッド部材が沈み込むように変形した際に凹溝内に挿入された曲成部も裏面が摺接部に摺接しつつパッド部材とともに沈み込む。このとき曲成部は貫通孔内に進入することにより、進入を規制された場合に摺接部と摺接する箇所(摺接対応箇所)に受ける反力を受けにくくなるため、曲成部に局所的な屈曲変形が生じにくく、これに起因した断線や破損を抑止することができる。特に乗員の膝突き姿勢や、足踏み姿勢などによりパッド部材に局所的に大荷重が加わった際にはパッド部材の沈み込み量が顕著に大きくなるが曲成部は貫通孔から突出可能であるため該パッド部材の沈み込み量と同量だけ移動して摺接対応箇所への反力の付与を軽減する。これにより曲成部に大きな沈み込み量が付与されても曲成部の移動が規制されにくく、局所的な屈曲変形に起因する断線や破損をより好適に抑制することができる。また、導通部を曲成形成して凹溝内に配設するので、各摺接部に曲成部の裏面を密着させる際、曲成部に発生する弾性力を利用することができ容易に凹溝への取付けが行える。また、曲成部の裏面と貫通孔の壁面とが接触することがなく、貫通孔は摺接部の間隔より広い幅を有して形成される。これにより、曲成部の裏面は摺接部のみと摺接するので曲成部の受ける摺動抵抗は小さく曲成部が摩擦力を受けて屈曲変形され過大な応力が生じる虞がないとともに、凹溝が入口から貫通孔まで深溝として形成される場合に対して、凹溝、及び貫通孔部の型抜きが容易となり、パッド部材が低コストに製作できる。 According to the invention according to claim 1 configured as described above, when the pad member is deformed so that a large load is input to the pad member due to the seating of the occupant and the pad member sinks, the bending is inserted into the concave groove. The part also sinks with the pad member while the back surface is in sliding contact with the sliding contact part. At this time, the bent portion enters the through-hole, so that when the entry is restricted, the bent portion is less likely to receive a reaction force received at a portion (sliding contact corresponding portion) that comes into sliding contact with the sliding contact portion. Bending deformation is difficult to occur, and disconnection and breakage due to this can be suppressed. In particular, when a heavy load is applied locally to the pad member due to the kneeling posture or stepping posture of the occupant, the amount of sinking of the pad member increases significantly, but the bent portion can protrude from the through hole. By moving the pad member by the same amount as the sinking amount, the application of the reaction force to the sliding contact corresponding portion is reduced. Thereby, even if a large amount of subsidence is applied to the bent portion, the movement of the bent portion is hardly restricted, and disconnection and breakage due to local bending deformation can be more suitably suppressed. In addition, since the conductive portion is bent and disposed in the groove, the elastic force generated in the bent portion can be easily used when the back surface of the bent portion is brought into close contact with each sliding contact portion. Can be installed in a groove. In addition, the back surface of the bent portion and the wall surface of the through hole do not contact each other, and the through hole is formed with a width wider than the interval between the sliding contact portions. As a result, since the back surface of the bent portion is in sliding contact with only the sliding contact portion, the sliding resistance received by the bent portion is small, and the bent portion is bent and deformed due to frictional force, and there is no possibility of generating excessive stress. In contrast to the case where the groove is formed as a deep groove from the inlet to the through hole, the concave groove and the through hole portion can be easily removed, and the pad member can be manufactured at low cost.

上記のように構成した請求項に係る発明によれば、貫通孔は、凹溝の対向する溝内側面に延在して形成されるので、摺接部の摺接方向長さを自在に短くできる。これにより曲成部と摺接部との摺接位置を、曲成部が元の形状に戻ろうとして摺接部を押圧する力が最も強くなる曲成部先端から、さらに遠ざけ摺接部を押圧する力を低減できるので摺接時に曲成部にかかる摺動抵抗を適切に抑制することができる。これにより曲成部をさらに抵抗なくスムーズに摺動させることができ、曲成部が摺接部との間で摩擦力を受けて屈曲変形され過大な応力が生じる虞がない。また、摺接部間の距離を短くすると曲成部の先端部の曲率が大きくなり摺接部に作用する力が大きくなる。しかし、摺接部の摺接方向長さを短くすることにより摺接部と摺接する曲成部の部位を曲成部先端から遠ざけたので摺接部間の隙間、つまり凹溝の隙間を小さくすることができ見栄えの向上、および着座時の凹溝部に触れた際の違和感の低減を図ることができる。 According to the invention according to claim 2 configured as described above, since the through hole is formed to extend on the inner surface of the groove facing the concave groove, the length of the sliding contact portion in the sliding contact direction can be freely set. Can be shortened. As a result, the sliding contact position between the bending portion and the sliding contact portion is further increased from the leading end of the bending portion where the force pressing the sliding contact portion is strongest when the bending portion tries to return to the original shape. Since the pressing force can be reduced, the sliding resistance applied to the bent portion at the time of sliding contact can be appropriately suppressed. As a result, the bent portion can be slid smoothly without resistance, and the bent portion is subjected to frictional force between the bent portion and the sliding contact portion, and there is no possibility that excessive stress is generated. Further, when the distance between the sliding contact portions is shortened, the curvature of the leading end portion of the bending portion increases and the force acting on the sliding contact portion increases. However, by shortening the length of the sliding contact portion in the sliding contact direction, the portion of the bent portion that is in sliding contact with the sliding contact portion is moved away from the tip of the bent portion, so the gap between the sliding contact portions, that is, the gap of the concave groove is reduced. It is possible to improve the appearance and to reduce the uncomfortable feeling when touching the concave groove portion when sitting.

上記のように構成した請求項に係る発明によれば、導通部の摺接部と摺接する部分の幅が、摺接部と摺接しない他の部分の幅よりも小さく形成されているので他の部分よりも撓み易い。これにより導通部が摺接時に摺接部を押圧する力が小さくなり導通部にかかる摺動抵抗を抑制することができる。このように摺動抵抗が抑制されることにより導通部を確実に摺動させることができるので、導通部が摺動部との間で抵抗を受け変形されることはなく、よって曲成部を屈曲変形させ過大な応力を生じさせる虞がない。
上記のように構成した請求項4に係る発明によれば、乗員の着座等によりパッド部材に大荷重が入力されてパッド部材が沈み込むように変形した際に凹溝内に挿入された曲成部も裏面が摺接部に摺接しつつパッド部材とともに沈み込む。このとき曲成部は貫通孔内に進入することにより、進入を規制された場合に摺接部と摺接する箇所(摺接対応箇所)に受ける反力を受けにくくなるため、曲成部に局所的な屈曲変形が生じにくく、これに起因した断線や破損を抑止することができる。特に乗員の膝突き姿勢や、足踏み姿勢などによりパッド部材に局所的に大荷重が加わった際にはパッド部材の沈み込み量が顕著に大きくなるが曲成部は貫通孔から突出可能であるため該パッド部材の沈み込み量と同量だけ移動して摺接対応箇所への反力の付与を軽減する。これにより曲成部に大きな沈み込み量が付与されても曲成部の移動が規制されにくく、局所的な屈曲変形に起因する断線や破損をより好適に抑制することができる。また、導通部を曲成形成して凹溝内に配設するので、各摺接部に曲成部の裏面を密着させる際、曲成部に発生する弾性力を利用することができ容易に凹溝への取付けが行える。また、導通部の摺接部と摺接する部分の幅が、摺接部と摺接しない他の部分の幅よりも小さく形成されているので他の部分よりも撓み易い。これにより導通部が摺接時に摺接部を押圧する力が小さくなり導通部にかかる摺動抵抗を抑制することができる。このように摺動抵抗が抑制されることにより導通部を確実に摺動させることができるので、導通部が摺動部との間で抵抗を受け変形されることはなく、よって曲成部を屈曲変形させ過大な応力を生じさせる虞がない。

According to the invention according to claim 3 configured as described above, the width of the portion of the conducting portion that is in sliding contact with the sliding contact portion is smaller than the width of the other portion that is not in sliding contact with the sliding contact portion. It is easier to bend than other parts. Thereby, the force which presses a sliding contact part at the time of a conductive part slidingly becomes small, and the sliding resistance concerning a conductive part can be suppressed. By suppressing the sliding resistance in this way, the conductive portion can be reliably slid, so the conductive portion is not deformed due to resistance with the sliding portion, and thus the bent portion is There is no risk of bending deformation causing excessive stress.
According to the invention according to claim 4 configured as described above, when the pad member is deformed so that a large load is input to the pad member due to the seating of the occupant and the pad member sinks, the bending is inserted into the groove. The part also sinks with the pad member while the back surface is in sliding contact with the sliding contact part. At this time, the bent portion enters the through-hole, so that when the entry is restricted, the bent portion is less likely to receive a reaction force received at a portion (sliding contact corresponding portion) that comes into sliding contact with the sliding contact portion. Bending deformation is difficult to occur, and disconnection and breakage due to this can be suppressed. In particular, when a heavy load is applied locally to the pad member due to the kneeling posture or stepping posture of the occupant, the amount of sinking of the pad member increases significantly, but the bent portion can protrude from the through hole. By moving the pad member by the same amount as the sinking amount, the application of the reaction force to the sliding contact corresponding portion is reduced. Thereby, even if a large amount of subsidence is applied to the bent portion, the movement of the bent portion is hardly restricted, and disconnection and breakage due to local bending deformation can be more suitably suppressed. In addition, since the conductive portion is bent and disposed in the groove, the elastic force generated in the bent portion can be easily used when the back surface of the bent portion is brought into close contact with each sliding contact portion. Can be installed in a groove. Further, the width of the portion of the conducting portion that is in sliding contact with the sliding contact portion is formed to be smaller than the width of the other portion that is not in sliding contact with the sliding contact portion, and therefore is more easily bent than the other portion. Thereby, the force which presses a sliding contact part at the time of a conductive part slidingly becomes small, and the sliding resistance concerning a conductive part can be suppressed. By suppressing the sliding resistance in this way, the conductive portion can be reliably slid, so the conductive portion is not deformed due to resistance with the sliding portion, and thus the bent portion is There is no risk of bending deformation causing excessive stress.

上記のように構成した請求項5に係る発明によれば、凹溝の溝内側面と着座側表面との接続部位にR部が形成されるので、曲成部をR部形状に倣って確実に曲成させることができ、この部位での屈曲変形を防止することができる。   According to the invention according to claim 5 configured as described above, since the R portion is formed at the connection portion between the groove inner side surface of the concave groove and the seating side surface, the bent portion is surely followed by the shape of the R portion. And bending deformation at this portion can be prevented.

上記のように構成した請求項6に係る発明によれば、導通部を曲成形成し凹溝内の摺接部に当接させて取り付けたときに、凹溝を挟む2つの検知部のピッチが規定値となるように2つの検知部間の導通部の長さが設定されている。即ち、凹溝内に挿入する導通部の長さを設定するという簡易な方法で凹溝を挟む2つの検知部のピッチが設定できる。このとき凹溝の底部には曲成部が進入可能に貫通孔が設けられているので、曲成部は干渉されず凹溝の内面に沿って幅広い範囲の深さで取り付けができる。これによって凹溝を挟む2つの検知部のピッチも幅広い範囲で対応でき、検知部の取付けピッチが異なる場合にも共通の荷重検知装置で容易に対応できるので荷重検知装置の共通化を図ることができ、低コスト化が図れる。   According to the invention according to claim 6 configured as described above, the pitch between the two detection portions sandwiching the concave groove when the conducting portion is bent and attached to the sliding contact portion in the concave groove. The length of the conduction part between the two detection parts is set so that becomes a specified value. That is, it is possible to set the pitch of the two detection units sandwiching the groove by a simple method of setting the length of the conduction portion inserted into the groove. At this time, since the bent hole is provided at the bottom of the groove so that the bent portion can enter, the bent portion can be attached in a wide range of depth along the inner surface of the groove without interference. As a result, the pitch of the two detection units sandwiching the concave groove can be dealt with in a wide range, and even when the mounting pitch of the detection units is different, it can be easily handled with a common load detection device, so that the load detection device can be shared. And cost reduction can be achieved.

本発明に係る荷重検知装置の取付構造を適用した車両用シートの全体構成を示す斜視図である。1 is a perspective view showing an overall configuration of a vehicle seat to which an attachment structure for a load detection device according to the present invention is applied. 車両用シートのクッション部を示す上面図である。It is a top view which shows the cushion part of a vehicle seat. 図2の部分破断拡大図である。FIG. 3 is a partially broken enlarged view of FIG. 2. 荷重検知装置の上面図(a)および下面図(b)である。It is the top view (a) and bottom view (b) of a load detection apparatus. 図2に示した車両用シートのクッション部の5−5断面図である。FIG. 5 is a 5-5 cross-sectional view of the cushion portion of the vehicle seat shown in FIG. 2. 図3の6−6断面図(a)、及び(a)に大荷重が上方から入力され、パッド部材が沈み込んだ図(b)である。FIG. 6B is a cross-sectional view (a) of FIG. 3A and FIG. 3A in which a large load is input from above and the pad member is sunk. 図6に対応する従来技術の取付構造の断面図(a)、及び(a)に大荷重が上方から入力されパッド部材が沈み込んだ図(b)である。FIG. 7 is a cross-sectional view (a) of a conventional mounting structure corresponding to FIG. 6, and FIG. 7 (b) in which a large load is input from above and the pad member is sunk. 挿入孔の変形例1の断面図である。It is sectional drawing of the modification 1 of an insertion hole. 挿入孔の変形例2の断面図である。It is sectional drawing of the modification 2 of an insertion hole. 第2の実施形態に係る荷重検知装置を示す図である。It is a figure which shows the load detection apparatus which concerns on 2nd Embodiment. 挿入孔の変形例3の断面図である。It is sectional drawing of the modification 3 of an insertion hole. 挿入孔の変形例4の断面図である。It is sectional drawing of the modification 4 of an insertion hole. 荷重検知装置の別の形態を示す図である。It is a figure which shows another form of a load detection apparatus.

以下、本発明に係る車両シート用の着座検知装置の取付構造を車両シートに適用した第1の実施形態について図面を参照して説明する。なお、本明細書中において使用する「前後、左右、上下」の方向は車両のそれを基準として記述している。   Hereinafter, a first embodiment in which an attachment structure for a seating detection device for a vehicle seat according to the present invention is applied to a vehicle seat will be described with reference to the drawings. In addition, the directions of “front and rear, left and right, up and down” used in this specification are described with reference to the vehicle.

車両シート2は、図1に示すように、クッション部4、フィルム状の荷重検知装置8、及びシートバック部6を備えている。クッション部4は、図2、図3に示すように、ウレタン等から構成されるパッド部材10とパッド部材10の着座側表面である上面を覆うように装着される布製(またはビニールレザーや皮革製等)の表皮部材12とを備えている。クッション部4のパッド部材10の上面の一部には、図3に示すように、左右方向(図3の上下方向)に延在する凹溝14が陥没形成されている。   As shown in FIG. 1, the vehicle seat 2 includes a cushion portion 4, a film-like load detection device 8, and a seat back portion 6. As shown in FIGS. 2 and 3, the cushion portion 4 is made of cloth (or vinyl leather or leather) that is mounted so as to cover a pad member 10 made of urethane or the like and an upper surface that is a seating side surface of the pad member 10. And the like). As shown in FIG. 3, a concave groove 14 extending in the left-right direction (vertical direction in FIG. 3) is recessed in a part of the upper surface of the pad member 10 of the cushion portion 4.

荷重検知装置8はメンブレンスイッチでありパッド部材10と、パッド部材10を覆う表皮部材12との間に配置されている。荷重検知装置8は、図4(a)の平面図に示すように、パッド部材10の着座側表面に裏面が当接してパッド部材10への荷重を検知する複数(本実施形態においては4つ)の検知部としての接点A〜Dと、接点A〜Dにより検知された荷重信号を出力する外部出力部33と、4つの接点A〜Dの間および接点A〜Dと外部出力部33との間を導通する第1〜第4の4つの導通部24、26、28、30とを備えている。なお、以降、荷重検知装置8においてパッド部材10の着座側表面に当接する側を裏面と称し、表皮部材12と当接する側を表面と称す。   The load detection device 8 is a membrane switch and is disposed between the pad member 10 and the skin member 12 covering the pad member 10. As shown in the plan view of FIG. 4A, the load detection device 8 includes a plurality of (four in the present embodiment) that detect the load applied to the pad member 10 when the back surface abuts against the seating side surface of the pad member 10. ), The external output unit 33 that outputs a load signal detected by the contacts A to D, and between the four contacts A to D and the contacts A to D and the external output unit 33. The first to fourth conductive portions 24, 26, 28, and 30 that are electrically connected to each other are provided. Hereinafter, in the load detection device 8, the side that contacts the seating side surface of the pad member 10 is referred to as the back surface, and the side that contacts the skin member 12 is referred to as the surface.

そして、検知部としての4個の接点A〜Dは、接点A〜Dによって矩形を形成するように所定の位置である矩形の角部にそれぞれ配置される。導通部は、接点Aと接点Bとを繋ぐ第1導通部24と、接点Cと接点Dとを繋ぐ第2導通部26と、第1導通部24と第2導通部26とを繋ぐ第3導通部28と、第3導通部28と基端部に設けられたコネクタ32とを繋ぐ第4導通部30とを有している。図4(a)、(b)に示すように、荷重検知装置8の基端部には外部出力部33が設けられている。外部出力部33は、検知部(接点A〜D)で検知された荷重を出力するものであり出力電極が形成されている。この外部出力部33にはコネクタ32が接続されている。コネクタ32は、乗員の着座状態を判断する図略のECU(Electronic Control Unit)に連結される。   And four contact points AD as a detection part are each arrange | positioned at the corner | angular part of a rectangle which is a predetermined position so that a rectangle may be formed with contact points AD. The conducting portion includes a first conducting portion 24 that connects the contact A and the contact B, a second conducting portion 26 that connects the contact C and the contact D, and a third connecting the first conducting portion 24 and the second conducting portion 26. It has the conduction | electrical_connection part 28 and the 4th conduction | electrical_connection part 30 which connects the 3rd conduction | electrical_connection part 28 and the connector 32 provided in the base end part. As shown in FIGS. 4A and 4B, an external output unit 33 is provided at the base end of the load detection device 8. The external output part 33 outputs the load detected by the detection part (contact point AD), and the output electrode is formed. A connector 32 is connected to the external output unit 33. The connector 32 is connected to an unillustrated ECU (Electronic Control Unit) that determines the seating state of the occupant.

荷重検知装置8は、いずれも図略の対となった上部フィルムと下部フィルムとを絶縁スペーサを介して重合することによりフィルム状に形成される。上部フィルム及び下部フィルムは、例えばポリエチレンナフタレート(PEN)等の樹脂材からなる薄肉状のフィルムで、接点A〜D及び各導通部24、26、28、30の外形をなしている。絶縁スペーサは、例えばポリエチレンテレフタレート(PET)等の樹脂からなり、上部フィルム及び下部フィルムの形状に略沿う外形をなし、接点に対応する位置には円形の開口部が設けられている。   Each of the load detection devices 8 is formed in a film shape by polymerizing an upper film and a lower film, which are not shown in pairs, via an insulating spacer. The upper film and the lower film are thin-walled films made of a resin material such as polyethylene naphthalate (PEN), and form the outer shapes of the contacts A to D and the conductive portions 24, 26, 28, and 30. The insulating spacer is made of, for example, a resin such as polyethylene terephthalate (PET), has an outer shape that substantially conforms to the shape of the upper film and the lower film, and is provided with a circular opening at a position corresponding to the contact.

そして、各接点A〜Dにおいて、上部フィルムに配された円形状の上部電極(図略)と、下部フィルムに配された円形状の下部電極(図略)とが、開口部を挟んで同心で対向するように設けられている。接点部において設定値以上の荷重が厚み方向に加わると、上部電極と下部電極とが接触してオンされ電流が流れて設定値以上の荷重の入力が検知される。各接点A〜Dの電極は、各導通部24、26、28、30によって外部出力部33の電極に接続されている。   In each of the contacts A to D, a circular upper electrode (not shown) disposed on the upper film and a circular lower electrode (not illustrated) disposed on the lower film are concentric with the opening interposed therebetween. Are provided so as to face each other. When a load greater than the set value is applied in the thickness direction at the contact portion, the upper electrode and the lower electrode are brought into contact with each other to be turned on and a current flows to detect the input of the load greater than the set value. The electrodes of the contacts A to D are connected to the electrodes of the external output unit 33 by the conduction units 24, 26, 28, and 30.

各導通部24、26、28、30において接点A、Bと、接点C、Dとの間を形成する第3導通部28の中央には印Mが設けられている。そして第3導通部28が、交差部15で凹溝14を横切り、印Mが交差部15の略中央に配置される。この後、交差部15に位置する第3導通部28が曲成形成された曲成部28aが凹溝14に形成された後に詳述する挿入箇所である挿入孔40内に予め設定された所定量だけ挿入される。これにより挿入孔40(凹溝14)の両側に配置された所定の間隔で形成された接点A、Bと、接点C、Dと、が挿入孔40(凹溝14)を跨いで挿入孔40(凹溝14)から等間隔で所定の検知位置に配置される。   A mark M is provided at the center of the third conductive portion 28 that forms the contact points A and B and the contact points C and D between the conductive portions 24, 26, 28, and 30. The third conductive portion 28 crosses the concave groove 14 at the intersection 15, and the mark M is disposed at the approximate center of the intersection 15. After this, a place set in advance in the insertion hole 40, which is an insertion location to be described in detail after the bent portion 28a in which the third conducting portion 28 located at the intersecting portion 15 is bent and formed in the concave groove 14, is provided. Only a fixed amount is inserted. As a result, the contacts A and B and the contacts C and D formed at predetermined intervals arranged on both sides of the insertion hole 40 (concave groove 14) straddle the insertion hole 40 (concave groove 14). They are arranged at predetermined detection positions at equal intervals from the (concave groove 14).

なお、本実施形態においては接点A、Bと、接点C、Dと、を挿入孔40(凹溝14)を跨いで挿入孔40(凹溝14)から等間隔でそれぞれ配置したが、これに限定するものではない。つまり交差部15の略中央に配置される第3導通部28に設けた印Mの位置を任意に変更することで、挿入孔40(凹溝14)の両側の接点A、Bと、接点C、Dまでの距離の配分を変更してもよい。また、印Mは設けずともよい。そして、このように挿入孔40内に曲成部28aが挿入された状態において、荷重検知装置8がパッド部材10の着座側表面に当接して固定される。   In this embodiment, the contacts A and B and the contacts C and D are arranged at equal intervals from the insertion hole 40 (concave groove 14) across the insertion hole 40 (concave groove 14). It is not limited. That is, by arbitrarily changing the position of the mark M provided on the third conducting portion 28 disposed substantially at the center of the intersection 15, the contacts A and B on both sides of the insertion hole 40 (concave groove 14) and the contact C , The distribution of the distance to D may be changed. Further, the mark M may not be provided. In the state where the bending portion 28 a is inserted into the insertion hole 40 in this way, the load detection device 8 contacts and is fixed to the seating side surface of the pad member 10.

荷重検知装置8をパッド部材10の着座側表面に固定するためには、図4(b)の裏面図に示すように、両面テープ(斜線で示す)34が貼り付けられたり、粘着剤(接着剤)が塗布されたりしている。両面テープ34は、本実施形態においては接点A〜Dの裏面には貼り付けられておらず、主に各導通部24、26、30の裏面に貼り付けられている。これにより、各導通部24、26、30が両面テープの接着によりパッド部材10の着座側表面に確実に貼り付けられ固定されるとともに、荷重検知装置8とパッド部材10とのずれにより生じる着座違和感を抑制する。また導通部28には両面テープが設けられていないので、挿入孔40内において曲成部28aが上下方向に移動可能である。なお、本実施形態においては両面テープを接点A〜Dの裏面には貼り付けていないが、接点A〜Dの裏面に貼り付けてもよい。これによっても接点A〜Dの入力荷重の検出感度は十分確保される。   In order to fix the load detection device 8 to the seating side surface of the pad member 10, as shown in the rear view of FIG. 4B, a double-sided tape (shown by diagonal lines) 34 is attached or an adhesive (adhesive) Agent) is applied. In this embodiment, the double-sided tape 34 is not affixed to the back surfaces of the contacts A to D, and is mainly affixed to the back surfaces of the conductive portions 24, 26, and 30. Thereby, each conduction | electrical_connection part 24,26,30 is reliably affixed and fixed to the seating side surface of the pad member 10 by adhesion | attachment of a double-sided tape, and the seating discomfort produced by the shift | offset | difference of the load detection apparatus 8 and the pad member 10 occurs. Suppress. Further, since the conducting portion 28 is not provided with a double-sided tape, the bent portion 28a can move in the vertical direction within the insertion hole 40. In addition, in this embodiment, although the double-sided tape is not affixed on the back surface of contact AD, you may affix on the back surface of contact AD. This also ensures sufficient detection sensitivity of the input loads at the contacts A to D.

なお、後に詳述するが、上記において曲成部28aは凹溝14の開口端で曲成される第1曲成部44と、後述する貫通孔43に達して、凹溝14の開口端側に開口して曲成される曲成部の先端部である第2曲成部28bとを含む、第3導通部28の一部によって構成されている。すなわち、曲成部28aは第3導通部28において挿入孔40(凹溝14及び貫通孔43)内に挿入された部位を示す。   As will be described in detail later, the bent portion 28a reaches the first bent portion 44 bent at the opening end of the groove 14 and a through-hole 43 described later to open the groove groove 14 at the opening end side. And a second bent portion 28b that is a tip portion of the bent portion that is opened and bent. That is, the bent portion 28 a indicates a portion inserted into the insertion hole 40 (the concave groove 14 and the through hole 43) in the third conduction portion 28.

次に、クッション部4のパッド部材10の上面の一部に陥没形成される凹溝14、及び、凹溝14の一部に形成される本発明に係る挿入孔40について詳述する。凹溝14は、前述したように、図2、図3に示すように、パッド部材10の左右方向(図3の上下方向)に延在している。凹溝14は図5の断面図に示すように互いに平行で略上下方向に延在する各溝内側面14a、14aと、各溝内側面14a、14aの下方で各溝内側面14a、14aを連結する底部14bと、を有する。   Next, the recessed groove 14 formed in a part of the upper surface of the pad member 10 of the cushion portion 4 and the insertion hole 40 according to the present invention formed in a part of the recessed groove 14 will be described in detail. As described above, the concave groove 14 extends in the left-right direction of the pad member 10 (up-down direction in FIG. 3), as shown in FIGS. As shown in the cross-sectional view of FIG. 5, the concave groove 14 includes groove inner side surfaces 14a and 14a that are parallel to each other and extend substantially in the vertical direction, and groove inner side surfaces 14a and 14a below the groove inner side surfaces 14a and 14a. And a bottom portion 14b to be connected.

図2、図3に示す荷重検知装置8の一部が交差する凹溝14の交差部15の下方には挿入孔40が凹溝14と連続的に形成されている。図6(a)に示すように、挿入孔40は、一対の摺接部41、41と、一対のR部42、42と、貫通孔43とを有している。一対の摺接部41、41は第3導通部28が挿入孔40内に挿入されたときに形成される曲成部28aの裏面が密着して摺接するように凹溝14から連続して形成される各溝内側面14a、14a上に対向して形成されている。各摺接部41、41は凹溝14内の各溝内側面14a、14aに対して面粗度が小さくなるよう形成され曲成部28aの裏面との間で滑らかに摺動できるようになっている。ただしこれに限らず、凹溝14内の各溝内側面14a、14aと同じ面粗度によって各摺接部41、41を形成してもよく、これによっても相応の効果が得られる。   An insertion hole 40 is formed continuously with the concave groove 14 below the intersecting portion 15 of the concave groove 14 where a part of the load detection device 8 shown in FIGS. 2 and 3 intersects. As shown in FIG. 6A, the insertion hole 40 has a pair of sliding contact portions 41, 41, a pair of R portions 42, 42, and a through hole 43. The pair of sliding contact portions 41, 41 are formed continuously from the concave groove 14 so that the back surface of the bent portion 28a formed when the third conducting portion 28 is inserted into the insertion hole 40 is in close contact and sliding contact. The groove inner surfaces 14a and 14a are formed to face each other. Each of the sliding contact portions 41, 41 is formed so as to have a small surface roughness with respect to each groove inner side surface 14a, 14a in the concave groove 14, and can smoothly slide between the back surface of the bent portion 28a. ing. However, the present invention is not limited to this, and the sliding contact portions 41 and 41 may be formed with the same surface roughness as the groove inner side surfaces 14a and 14a in the concave groove 14, and a corresponding effect can be obtained.

各R部42、42は挿入孔40に挿入した曲成部28aが当接するようにパッド部材10の着座側表面と各摺接部41、41との接続部に所定Rで夫々形成されている。ここで所定Rとは、第3導通部28がパッド部材10の着座側表面から挿入孔40内に所定Rに沿って配設されたとき、折れ曲り部となる第1曲成部44が急角度で屈曲して局所的な応力が加わり傷等がつかない大きさのRをいう。各R部42、42は当接した曲成部28aの当接部位である第1曲成部44を支持し各R部42、42の形状に第1曲成部44の形状を倣わせて変形を防止している。つまり、曲成部28aの裏面が各摺接部41、41と摺接しながら上方、または下方に移動する際に、各R部42、42はR部42、42と、各R部42、42と当接する曲成部28aとの間に大きな隙間が発生することを防止しこれによって屈曲変形を防止する。なお、各R部42、42は挿入孔40のみならず、凹溝14の入口部に設けてもよく、本実施形態においてはこの形態となっている。また各R部42、42と凹溝14の入口部に設けるR部の大きさを異なった大きさに設定してもよい。   Each R portion 42, 42 is formed with a predetermined R at a connection portion between the seating side surface of the pad member 10 and each sliding contact portion 41, 41 so that the bent portion 28a inserted into the insertion hole 40 abuts. . Here, the predetermined R means that when the third conductive portion 28 is disposed along the predetermined R from the seating side surface of the pad member 10 along the predetermined R, the first bent portion 44 that becomes a bent portion suddenly changes. R of a size that is bent at an angle so that local stress is applied and scratches are not caused. Each R portion 42, 42 supports the first bent portion 44 that is the contact portion of the bent bent portion 28 a and follows the shape of the first bent portion 44 in the shape of each R portion 42, 42. Deformation is prevented. That is, when the back surface of the bent portion 28a moves upward or downward while being in sliding contact with the sliding contact portions 41, 41, the R portions 42, 42 are R portions 42, 42 and the R portions 42, 42, respectively. A large gap is prevented from occurring between the bent portion 28a and the bent portion 28a, thereby preventing bending deformation. In addition, each R part 42 and 42 may be provided not only in the insertion hole 40 but in the entrance part of the ditch | groove 14, and is this form in this embodiment. Moreover, you may set the magnitude | size of the R part provided in each R part 42 and 42 and the entrance part of the ditch | groove 14 to a different magnitude | size.

貫通孔43は、各摺接部41、41間の間隔より広い幅で形成された対向する壁面43a、43aと、曲成部28aの長手方向と直交する方向である曲成部28aの幅よりも広い幅で形成された対向する壁面43b、43bとによって上面視が矩形で形成されている。貫通孔43は、第3導通部28の曲成部28aが挿入孔40内に挿入されたとき、曲成部28a、及び曲成部28aを構成する先端部である第2曲成部28bが進入可能なように凹溝14の底部14bからパッド部材10の裏面を貫通して穿設されている。具体的には、図6(b)に示すように、パッド部材10の上面に乗員が着座し着座荷重のような大荷重が上方から加わってパッド部材10が圧縮変形して沈み込み、曲成部28aの裏面が各摺接部41、41と摺接しながら下方向に移動しても、曲成部28aの裏面、および曲成部28aの先端部である第2曲成部28bは、貫通孔43を形成する各壁面と接触することなく貫通孔43を通過してパッド部材10の裏面から突出し、応力を受けることなく移動を完了する。   The through-hole 43 has an opposite wall surface 43a, 43a formed with a width wider than the interval between the sliding contact portions 41, 41, and the width of the bent portion 28a, which is a direction perpendicular to the longitudinal direction of the bent portion 28a. Further, the wall surface 43b, 43b facing each other formed with a wide width forms a rectangular top view. The through hole 43 includes a bent portion 28a and a second bent portion 28b which is a tip portion constituting the bent portion 28a when the bent portion 28a of the third conducting portion 28 is inserted into the insertion hole 40. The bottom surface 14b of the concave groove 14 is pierced through the back surface of the pad member 10 so as to be able to enter. Specifically, as shown in FIG. 6B, an occupant is seated on the upper surface of the pad member 10, and a large load such as a seating load is applied from above, so that the pad member 10 is compressed and deformed and sinks. Even if the back surface of the portion 28a moves downward while being in sliding contact with the slidable contact portions 41, 41, the back surface of the bent portion 28a and the second bent portion 28b that is the tip of the bent portion 28a pass through. Passing through the through-hole 43 without contacting each wall surface forming the hole 43 and projecting from the back surface of the pad member 10, the movement is completed without receiving stress.

このように、曲成部28aが挿入孔40内を自在に上下移動しても曲成部28aの裏面が貫通孔43を形成する各壁面に接触し貫通孔43から抵抗を受けることはない。なお、上記において各摺接部41、41間の間隔と、各摺接部41、41の面と平行な貫通孔43の壁面43a、43a間の間隔と、は同じでもよい(図8の変形例1参照)。これによっても、貫通孔53を形成する壁面53a、53a、53b、53bによって曲成部28aの下方への移動が規制されることはなく、貫通孔53を設けたことによる効果は得られる。また、貫通孔は図11の変形例3に示すようにパッド部材10の裏面に向かって拡径しつつ傾斜した面51a、51aによって形成された貫通孔51でもよい。また図12の変形例4に示すように曲面54a、54aによって形成された貫通孔54でもよく、これらによっても同様の効果が得られる。   Thus, even if the bent portion 28a freely moves up and down in the insertion hole 40, the back surface of the bent portion 28a does not come into contact with each wall surface forming the through hole 43 and receives resistance from the through hole 43. In the above description, the interval between the sliding contact portions 41, 41 and the interval between the wall surfaces 43a, 43a of the through hole 43 parallel to the surface of each sliding contact portion 41, 41 may be the same (the deformation in FIG. 8). See Example 1). Also by this, the downward movement of the bent portion 28a is not restricted by the wall surfaces 53a, 53a, 53b, 53b forming the through hole 53, and the effect of providing the through hole 53 is obtained. Further, the through hole 51 may be a through hole 51 formed by inclined surfaces 51 a and 51 a while increasing the diameter toward the back surface of the pad member 10, as shown in Modification 3 of FIG. 11. Moreover, as shown in the modification 4 of FIG. 12, the through-hole 54 formed by the curved surfaces 54a and 54a may be sufficient, and the same effect is acquired also by these.

パッド部材10内であって交差部15の位置を除いた凹溝14の下方には、図2、図3、及び図5〜図9に示すように、金属製の線材で凹溝14の略全幅に亘る係留部材16が埋設されている。つまりパッド部材10内の係留部材16は図3の破線に示すように、交差部15の下方を迂回して配設されている。   As shown in FIGS. 2, 3, and 5 to 9, below the recessed groove 14 in the pad member 10 excluding the position of the intersecting portion 15, the recessed groove 14 is made of a metal wire. A mooring member 16 over the entire width is embedded. That is, the mooring member 16 in the pad member 10 is disposed around the lower portion of the intersection 15 as indicated by the broken line in FIG.

そして、図2、図5に示すように表皮部材12において係止部材20が嵌装された部分を凹溝14内に挿入し、クッション部4の左右方向の中央から離れた左右の露出部52において露出される係留部材16と、係止部材20とを固定環18により連結して表皮部材12をパッド部材10の表面に沿って固定する。このように凹溝14は、表皮部材12を吊るために形成された溝(吊溝)である。   Then, as shown in FIGS. 2 and 5, the portion of the skin member 12 where the locking member 20 is fitted is inserted into the concave groove 14, and the left and right exposed portions 52 separated from the center in the left-right direction of the cushion portion 4. The anchoring member 16 exposed in FIG. 1 and the locking member 20 are connected by a fixing ring 18 to fix the skin member 12 along the surface of the pad member 10. Thus, the concave groove 14 is a groove (hanging groove) formed to suspend the skin member 12.

次に、第1の実施形態における荷重検知装置8の取付け構造の作用について、以下に説明する。まず、比較のため凹溝14に貫通孔がない場合の作用について図7に基づいて説明する。図7は、本発明に係る図6と同様に曲成部90の凹溝91への挿入箇所において切断した断面図である。図6と図7との違いは貫通孔43の有無である。図7(a)は、パッド部材92の上に乗員が着座していない状態を示している。図7(b)は、パッド部材92上に乗員が着座し大荷重が上方から下方に向かって加わり、パッド部材92が圧縮変形して大きく沈み込んだ状態を示している。図7(b)から明らかな様に貫通孔がないと、パッド部材92とともに下方に移動する曲成部90の先端部である第2曲成部90aはやがて凹溝91の底面91aに当接する。すると第2曲成部90aが凹溝91の底面91aから反力を受け、反力は曲成部90を曲成部90の曲率が大きくなる方向に変形させる。これにより曲成部90が摺接部94と摺接する摺接箇所は摺接部94を押圧し、これによって摺接部94から反力を受け、延いてはパッド部材92上面から凹溝91内に折り曲げられる折り曲げ部としての第1曲成部93を屈曲変形させる(図7(b)参照)。このようにして折り曲げ部93が断線、または破損する虞がある。   Next, the effect | action of the attachment structure of the load detection apparatus 8 in 1st Embodiment is demonstrated below. First, the operation when there is no through hole in the concave groove 14 will be described based on FIG. 7 for comparison. FIG. 7 is a cross-sectional view taken at a place where the bent portion 90 is inserted into the concave groove 91 as in FIG. 6 according to the present invention. The difference between FIG. 6 and FIG. 7 is the presence or absence of the through hole 43. FIG. 7A shows a state in which no occupant is seated on the pad member 92. FIG. 7B shows a state in which an occupant sits on the pad member 92 and a large load is applied from the upper side to the lower side, and the pad member 92 is compressed and deformed and greatly sinks. As apparent from FIG. 7B, if there is no through hole, the second bent portion 90 a that is the tip of the bent portion 90 that moves downward together with the pad member 92 eventually comes into contact with the bottom surface 91 a of the groove 91. . Then, the second bent portion 90a receives a reaction force from the bottom surface 91a of the groove 91, and the reaction force deforms the bent portion 90 in a direction in which the curvature of the bent portion 90 increases. As a result, the sliding contact portion where the bent portion 90 is in sliding contact with the sliding contact portion 94 presses the sliding contact portion 94, thereby receiving a reaction force from the sliding contact portion 94 and extending from the upper surface of the pad member 92 to the inside of the concave groove 91. The first bent portion 93 is bent and deformed as a bent portion that can be bent (see FIG. 7B). In this way, the bent portion 93 may be broken or damaged.

次に本発明に係る荷重検知装置8の取付け構造の作用について説明する。凹溝14に形成された挿入孔40内には荷重検知装置8の第3導通部28の曲成部28aが所定の量だけ挿入され、挿入孔40の両側のパッド部材10の上面には、第3導通部28に連結される各検知部である接点A、Bと、接点C、Dとの間が所定のピッチ(間隔)で固定されている。つまり接点A、Bと、接点C、Dとの間を形成する第3導通部28は予め設定された距離で形成されているので、曲成部28aが所定の量だけ挿入孔40内に挿入されることにより接点A、B、及び接点C、D間が所定のピッチ(間隔)で固定されることとなる。   Next, the operation of the mounting structure of the load detection device 8 according to the present invention will be described. A bent portion 28a of the third conduction portion 28 of the load detection device 8 is inserted into the insertion hole 40 formed in the concave groove 14 by a predetermined amount. On the upper surface of the pad member 10 on both sides of the insertion hole 40, The contact points A and B, which are detection units connected to the third conduction unit 28, and the contact points C and D are fixed at a predetermined pitch (interval). That is, since the third conductive portion 28 that forms between the contacts A and B and the contacts C and D is formed at a preset distance, the bent portion 28a is inserted into the insertion hole 40 by a predetermined amount. As a result, the contacts A and B and the contacts C and D are fixed at a predetermined pitch (interval).

そして乗員がパッド部材10の上面に表皮部材12を介して着座すると、パッド部材10は沈み込み、特に交差部15を含む挿入孔40(凹溝14)近傍は溝による空間を有するので大きく変形しながら沈み込む。このとき、パッド部材10は裏面が固定され上下に移動しないので、パッド部材10の沈み込み量は、パッド部材10の上面から裏面に向かって漸減している。   When the occupant sits on the upper surface of the pad member 10 via the skin member 12, the pad member 10 sinks. In particular, the vicinity of the insertion hole 40 (concave groove 14) including the intersection 15 has a space due to the groove, so that it is greatly deformed. It sinks while. At this time, since the back surface of the pad member 10 is fixed and does not move up and down, the sinking amount of the pad member 10 gradually decreases from the upper surface of the pad member 10 toward the back surface.

一方、パッド部材10の上面に固定される荷重検知装置8、及び挿入孔40内に挿入され曲成形成によって生じる弾性力によって各摺接部41、41を各摺接部41、41の面と直交方向に押圧する荷重検知装置8の曲成部28aは、パッド部材10の上面と同時に、且つ上面の移動量と同じ量だけ下方に向かって移動する。   On the other hand, the load detecting device 8 fixed to the upper surface of the pad member 10 and the sliding contact portions 41 and 41 are made to be in contact with the surfaces of the sliding contact portions 41 and 41 by the elastic force generated by the bending and being inserted into the insertion hole 40. The bending portion 28a of the load detection device 8 that presses in the orthogonal direction moves simultaneously with the upper surface of the pad member 10 and downward by the same amount as the movement amount of the upper surface.

これによりパッド部材10に設けられたパッド部材10の上面より下方の各摺接部41、41と、パッド部材10の上面と同量だけ沈み込む曲成部28aの裏面との間には相対移動が発生する。しかし各摺接部41、41との間で曲成部28aは良好に摺動されるので、曲成部28aが各摺接部41、41から抵抗を受け変形されることはない。つまり曲成部28aが変形することにより変形部に応力が生じ断線等に至る虞はない(図6(a)、(b)参照)。   Accordingly, the sliding movement between the sliding contact portions 41 and 41 below the upper surface of the pad member 10 provided on the pad member 10 and the back surface of the bent portion 28a sinking the same amount as the upper surface of the pad member 10 is relatively performed. Will occur. However, since the bent portion 28a slides satisfactorily between the sliding contact portions 41, 41, the bent portion 28a is not deformed due to resistance from the sliding contact portions 41, 41. That is, there is no possibility that stress is generated in the deformed portion due to deformation of the bent portion 28a and disconnection or the like is caused (see FIGS. 6A and 6B).

また、挿入孔40は各摺接部41、41間の間隔よりも大きな間隔の壁面43a、43aによって形成される貫通孔43を各摺接部41、41の下方に有している。よってパッド部材10にどのように大きな荷重が下方に向かって入力され、どれだけ大きく沈み込んでも先端部28bを含む曲成部28aはパッド部材10の裏面から突出し曲成部28aの下方への移動が規制されることはないとともに、曲成部28aの裏面が貫通孔43を形成する各壁面に当接して摩擦力を受けることはない。このように、本発明に係る荷重検知装置8の取付け構造においては、上記において貫通孔のない場合として図7に基づいて説明したように、曲成部28aが貫通孔43の各壁面に移動を規制され、移動を規制した各壁面から曲成部28aが反力を受けて撓み断線等に至る虞はない。   Further, the insertion hole 40 has a through hole 43 formed by wall surfaces 43 a and 43 a having a larger interval than the interval between the sliding contact portions 41 and 41 below the sliding contact portions 41 and 41. Therefore, no matter how large load is input downward to the pad member 10, the bent portion 28a including the front end portion 28b protrudes from the back surface of the pad member 10 and moves downward of the bent portion 28a no matter how much the sink is depressed. Is not restricted, and the back surface of the bent portion 28a does not abut against each wall surface forming the through hole 43 and receives a frictional force. Thus, in the mounting structure of the load detection device 8 according to the present invention, the bent portion 28a moves to each wall surface of the through hole 43 as described above based on FIG. There is no possibility that the bent portion 28a receives a reaction force from each wall surface that is restricted and restricted from moving and is bent and disconnected.

そして荷重検知装置8は、乗員が車両シート2に着座すると、接点A〜Dのいずれか1つ以上がオンとなって、荷重検知装置8が構成する回路に電流が流れ、この電流による着座検知信号によって、ECUがシートクッション部4上に人が着座している(規定以上の荷重負荷がある)と判断する。これによって、例えばエアバック装置の作動を可能にしたり、シートベルトが非装着である旨の警告を発したりする。   When the occupant sits on the vehicle seat 2, any one or more of the contacts A to D are turned on, and a current flows through a circuit that the load detection device 8 constitutes. Based on the signal, the ECU determines that a person is seated on the seat cushion portion 4 (there is a load more than a specified load). Thereby, for example, the operation of the airbag apparatus is made possible, or a warning that the seat belt is not worn is issued.

上記の説明から明らかなように第1の実施形態においては、荷重検知装置8の第3導通部28が曲成形成されて挿入される凹溝14内の挿入孔40には、フィルム状荷重検知装置8の第3導通部28の裏面が摺接する対向する各摺接部41、41と、着座側表面と各摺接部41、41との接続部に形成され第1曲成部44、44が当接する各R部42、42と、曲成部28aの先端部である第2曲成部28bが進入可能なように凹溝14内の挿入孔40の底部14bからパッド部材10の裏面を貫通して穿設された貫通孔43とが設けられている。   As is clear from the above description, in the first embodiment, the film-shaped load detection is provided in the insertion hole 40 in the concave groove 14 into which the third conduction portion 28 of the load detection device 8 is formed by bending. The first bent portions 44, 44 are formed at the opposing sliding contact portions 41, 41 where the back surface of the third conducting portion 28 of the device 8 is in sliding contact, and at the connecting portion between the seating side surface and the sliding contact portions 41, 41. The back surface of the pad member 10 from the bottom portion 14b of the insertion hole 40 in the concave groove 14 so that the respective R portions 42, 42 that are in contact with each other and the second bent portion 28b that is the tip of the bent portion 28a can enter. A through-hole 43 that is drilled through is provided.

これにより、乗員の着座等によりパッド部材10に大荷重が入力されてパッド部材10が沈み込むように圧縮変形した際に凹溝14内に挿入された曲成部28aも裏面が摺接部41に摺接しつつパッド部材10とともに沈み込む。このとき曲成部28aは貫通孔43内に進入することにより、進入を規制されたときに摺接部41と摺接する箇所(摺接対応箇所)が摺接部41から受ける反力を受けにくくなるため、曲成部28aに局所的な屈曲変形が生じにくく、これに起因した断線や破損を抑止することができる。特に乗員の膝突き姿勢や、足踏み姿勢などによりパッド部材10に局所的に大荷重が加わった際にはパッド部材10の沈み込み量が顕著に大きくなるが曲成部28aは貫通孔43から突出可能であるため該パッド部材10の沈み込み量と同量だけ移動して摺接対応箇所への反力の付与はないか、または軽減される。これにより曲成部28aに大きな沈み込み量が付与されても曲成部28aの移動が規制されないか、または規制されにくく、局所的な屈曲変形に起因する断線や破損をより好適に抑制することができる。   As a result, the back surface of the bent portion 28a inserted into the concave groove 14 when the pad member 10 is compressed and deformed so that a large load is input to the pad member 10 due to the occupant's seating or the like is slidably contacted. Sinks with the pad member 10 while sliding. At this time, the bent portion 28a enters the through-hole 43, so that when the entry is restricted, the portion that comes into sliding contact with the sliding contact portion 41 (sliding contact corresponding portion) is less susceptible to the reaction force received from the sliding contact portion 41. Therefore, local bending deformation is unlikely to occur in the bent portion 28a, and disconnection and damage due to this can be suppressed. In particular, when a heavy load is locally applied to the pad member 10 due to the kneeling posture of the occupant or the stepping posture, the sinking amount of the pad member 10 is significantly increased, but the bent portion 28a projects from the through hole 43. Therefore, it is possible to move the same amount as the sinking amount of the pad member 10 so that the reaction force is not applied to the sliding contact corresponding portion or is reduced. Thereby, even if a large sinking amount is given to the bent portion 28a, the movement of the bent portion 28a is not restricted or hardly regulated, and the disconnection or breakage caused by local bending deformation is more suitably suppressed. Can do.

また、第3導通部28を曲成形成して凹溝14内の挿入孔40に配設するので、各摺接部41、41に曲成部28aの裏面を密着させる際、曲成部28aに発生する弾性力を利用することができ容易に挿入孔40への取付けが行える。さらに、荷重検知装置8の検知部の接点A〜Dが、パッド部材10の着座側表面に固定されるので、検知部の位置決めが容易である。   In addition, since the third conductive portion 28 is bent and disposed in the insertion hole 40 in the concave groove 14, when the back surface of the bent portion 28 a is brought into close contact with the sliding contact portions 41, 41, the bent portion 28 a. Thus, the elastic force generated in the insertion hole 40 can be utilized, and the attachment to the insertion hole 40 can be easily performed. Furthermore, since the contacts A to D of the detection unit of the load detection device 8 are fixed to the seating side surface of the pad member 10, the detection unit can be easily positioned.

また、第1の実施形態においては、第3導通部28の曲成部28aの先端部である第2曲成部28bが貫通孔43に進入した状態において、曲成部28aの裏面と貫通孔43の各壁面とが接触しないように、貫通孔43が摺接部41、41の間隔より広い幅を有して形成される。これにより、曲成部28aの裏面は各摺接部41、41のみと摺接するので曲成部28aの受ける摺動抵抗は小さく曲成部28aが摩擦力を受けて屈曲変形され局所的に過大な応力が生じる虞がない。また凹溝が入口から貫通孔まで同一形状で深溝として形成される場合に対して、挿入孔40の型抜きが容易となり、パッド部材10が簡易な型によって低コストに製作できる。   In the first embodiment, in the state where the second bent portion 28b, which is the distal end portion of the bent portion 28a of the third conducting portion 28, enters the through hole 43, the back surface and the through hole of the bent portion 28a. The through hole 43 is formed with a width wider than the interval between the sliding contact portions 41 and 41 so that the respective wall surfaces of 43 are not in contact with each other. As a result, since the back surface of the bent portion 28a is in sliding contact with only the sliding contact portions 41, 41, the sliding resistance received by the bent portion 28a is small, and the bent portion 28a is bent and deformed due to frictional force and is locally excessive. There is no risk of generating excessive stress. Further, when the concave groove is formed as a deep groove having the same shape from the inlet to the through hole, the insertion hole 40 can be easily removed from the mold, and the pad member 10 can be manufactured at a low cost with a simple mold.

なお、第1の実施形態においては挿入孔40の貫通孔43を凹溝14の底部からパッド部材10の裏面までとしたが、これに限定せずパッド部材10の裏面から各摺接部41、41に至るまで凹溝14の対向する溝内側面14a、14aに延在して形成してもよい。これにより図9の変形例2に示すように摺接部41の摺接方向長さを自在に短くできる。このように、摺接部41の摺接方向長さを短くできるので、曲成部28aと各摺接部41、41との摺接位置を、曲成部28aが元の形状に戻ろうとする力によって摺接部41、41を押圧する力が最も強い先端部である第2曲成部28bから、さらに遠ざけることができる。これにより、各摺接部41、41を押圧する力を低減できるので摺接時に曲成部28aにかかる摺動抵抗を適切に抑制することができ、曲成部28aをさらに抵抗なくスムーズに摺動させることができるので、曲成部28aが各摺接部41、41との間で摩擦力を受けて変形され過大な応力が生じる虞がない。   In the first embodiment, the through hole 43 of the insertion hole 40 extends from the bottom of the concave groove 14 to the back surface of the pad member 10, but is not limited thereto, and the sliding contact portions 41 from the back surface of the pad member 10, It may be formed to extend to the groove inner side surfaces 14a, 14a facing the concave groove 14 up to 41. Thereby, as shown in the modification 2 of FIG. 9, the sliding direction length of the sliding contact part 41 can be shortened freely. Thus, since the length of the sliding contact portion 41 in the sliding contact direction can be shortened, the bending portion 28a tries to return to the original shape of the sliding contact position between the bending portion 28a and each sliding contact portion 41, 41. It is possible to move further away from the second bent portion 28b, which is the tip portion having the strongest force to press the sliding contact portions 41, 41 by force. Thereby, since the force which presses each sliding contact part 41 and 41 can be reduced, the sliding resistance concerning the bending part 28a at the time of a sliding contact can be suppressed appropriately, and the bending part 28a can be slid smoothly further without resistance. Since it can be moved, there is no possibility that the bending portion 28a is deformed by receiving a frictional force between the sliding contact portions 41 and 41 and excessive stress is generated.

また、各摺接部41、41間の距離を短くすると曲成部28aの先端部28bの曲率が大きくなり各摺接部41、41に作用する力が大きくなる。しかし、各摺接部41、41の摺接方向長さを短くすることにより各摺接部41、41と摺接する曲成部28aの部位を曲成部28aの先端部である第2曲成部28bから遠ざけたので各摺接部41、41間の隙間、つまり凹溝14の隙間を小さくすることができ見栄えの向上、および着座時の凹溝部に触れた際の違和感の低減を図ることができる。   Moreover, if the distance between each sliding contact part 41 and 41 is shortened, the curvature of the front-end | tip part 28b of the bending part 28a will become large, and the force which acts on each sliding contact part 41 and 41 will become large. However, by shortening the length of the sliding contact portions 41, 41 in the sliding contact direction, the second bent portion which is the tip portion of the bent portion 28a is the portion of the bent portion 28a which is in sliding contact with the respective sliding contact portions 41, 41. Since it is away from the portion 28b, the gap between the sliding contact portions 41, 41, that is, the gap of the concave groove 14, can be reduced, and the appearance is improved, and the uncomfortable feeling when touching the concave groove portion when sitting is reduced. Can do.

また、第1の実施形態においては、凹溝14の溝内側面14aと着座側表面との接続部位にR部42、42が形成されるので、該R部42、42に当接する曲成部28aの第1曲成部44、44をR部42、42形状に倣って確実に曲成させることができ、この部位での屈曲変形を防止することができる。   Further, in the first embodiment, since the R portions 42 and 42 are formed at the connection portion between the groove inner side surface 14a of the concave groove 14 and the seating side surface, the bent portion that contacts the R portions 42 and 42 is formed. The first bent portions 44, 44 of 28a can be bent reliably following the shapes of the R portions 42, 42, and bending deformation at this portion can be prevented.

また、第1の実施形態においては、曲成部28aを曲成形成した第1曲成部44、44を、凹溝14の挿入孔40のR部42、42に当接させ、且つ曲成部28aの裏面を各摺接部41、41に当接させて取り付けたときに、凹溝14の挿入孔40を挟む2つの検知部の接点A、Bと、接点C、Dとのピッチが規定値となるように2つの接点A、Bと、接点C、Dとの間の第3導通部28の長さが設定されている。即ち、挿入孔40内に挿入する第3導通部28の長さを設定するという簡易な方法で挿入孔40を挟む2つの検知部の接点A、Bと、接点C、Dとのピッチが設定できる。このとき凹溝14の挿入孔40の下方には曲成部28aが進入可能に貫通孔43が設けられているので、曲成部28aは干渉されず挿入孔40の内面に沿って幅広い範囲の深さで取り付けができる。これによって挿入孔40(凹溝14)を挟む2つの検知部の接点A、Bと、接点C、Dとの間の取付けピッチも幅広い範囲で対応でき、接点A〜Dの取付けピッチが異なる場合にも共通の荷重検知装置8で容易に対応できるので、共通化を図ることができ、低コスト化が図れる。   In the first embodiment, the first bent portions 44, 44 formed by bending the bent portion 28 a are brought into contact with the R portions 42, 42 of the insertion hole 40 of the concave groove 14, and the bent portion 28 a is bent. When the back surface of the portion 28a is attached in contact with the sliding contact portions 41, 41, the pitch between the contacts A, B and the contacts C, D of the two detection portions sandwiching the insertion hole 40 of the concave groove 14 is The length of the 3rd conduction | electrical_connection part 28 between the two contacts A and B and the contacts C and D is set so that it may become a regulation value. That is, the pitch between the contact points A and B of the two detection parts sandwiching the insertion hole 40 and the contact points C and D is set by a simple method of setting the length of the third conduction part 28 to be inserted into the insertion hole 40. it can. At this time, since the through hole 43 is provided below the insertion hole 40 of the concave groove 14 so that the bent portion 28a can enter, the bent portion 28a is not interfered with and can be widened along the inner surface of the insertion hole 40. Can be installed at depth. In this way, the mounting pitch between the contacts A and B of the two detectors sandwiching the insertion hole 40 (concave groove 14) and the contacts C and D can be handled in a wide range, and the mounting pitch of the contacts A to D is different. Moreover, since it can respond easily by the common load detection apparatus 8, it can aim at commonality and can attain cost reduction.

次に、第2の実施形態について説明する。第2の実施形態は第1の実施形態に対し、図10に示すように荷重検知装置8の第3導通部28の形状を第3導通部48のように変更するものである。よって変更点のみ説明し、同様部分については説明を省略する。また同様の構成については同様の符号を付し説明する。   Next, a second embodiment will be described. The second embodiment is different from the first embodiment in that the shape of the third conduction part 28 of the load detection device 8 is changed to a third conduction part 48 as shown in FIG. Therefore, only the changes will be described, and description of similar parts will be omitted. In addition, the same reference numerals are given to the same configuration and will be described.

図6、及び図10に示すように、第2の実施形態においては、第3導通部48のうち、摺接部41と摺接する曲成形成する曲成部48aが第3導通部48の他の部分より幅が小さく形成されているおり、よって他の部分よりも撓み易い。これにより第3導通部48の曲成部48aが摺接部41、41に摺接する時に摺接部41、41を押圧する力が小さくなり摺動抵抗を抑制することができる。このように摺動抵抗が抑制されることにより第3導通部48を確実に摺動させることができるので、第3導通部48が摺動部41、41との間で抵抗を受け屈曲変形されないか、または屈曲変形されにくいので、曲成部48aが変形され局所的に過大な応力が生じ、断線する虞が低い。また貫通孔43の効果についても第1の実施形態と全く同様である。このように第2の実施形態においても第1の実施形態と同様の効果が期待できる。   As shown in FIGS. 6 and 10, in the second embodiment, of the third conductive portion 48, the bent portion 48 a that forms a slidable contact with the slidable contact portion 41 is provided in addition to the third conductive portion 48. The width is formed smaller than that of the portion, and therefore, it is more easily bent than the other portions. Thereby, when the bending part 48a of the 3rd conduction | electrical_connection part 48 contacts the sliding contact parts 41 and 41, the force which presses the sliding contact parts 41 and 41 becomes small, and a sliding resistance can be suppressed. Since the third conductive portion 48 can be reliably slid by suppressing the sliding resistance in this way, the third conductive portion 48 receives resistance between the sliding portions 41 and 41 and is not bent and deformed. In addition, since it is difficult to bend and deform, the bent portion 48a is deformed and excessive stress is locally generated, so that the possibility of disconnection is low. The effect of the through hole 43 is also the same as that in the first embodiment. Thus, in the second embodiment, the same effect as that of the first embodiment can be expected.

なお、第1、第2の実施形態において着座検知装置8は、検知部としての4個の接点A〜Dを矩形状に配置するものとしたが、これに限定されず、例えば、図13(a)及び図13(b)に示すように、検知部としての接点A〜Dを直線状に並べ導通部50により棒状に連結するものでもよい。棒状という簡単な構成とすることで、安価な着座検知装置とすることができ、生産コストの低減を図ることができる。   In the first and second embodiments, the seating detection device 8 has four contact points A to D as detection units arranged in a rectangular shape. However, the present invention is not limited to this. For example, FIG. As shown to a) and FIG.13 (b), you may arrange | position the contacts AD as a detection part linearly, and may connect with a rod shape by the conduction | electrical_connection part 50. FIG. By adopting a simple configuration of a rod shape, an inexpensive seating detection device can be obtained, and the production cost can be reduced.

また、着座検知装置8は、検知部として4個の接点A〜Dを備えた構成をなしているが、検知部の数は4個に限定されるものではなく2個以上であればよい。   Moreover, although the seating detection apparatus 8 has comprised the four contact points AD as a detection part, the number of detection parts is not limited to four, What is necessary is just two or more.

また、第1、第2の実施形態において各曲成部28a、48aは、隣り合う検知部間(接点A、Bと接点C、Dとの間)に設定されているが、これに限定されず、例えばコネクタ32(外部出力部33)と検知部(接点C、D)との間など、導通部における凹溝交差箇所であればどこに設定してもよい。   In the first and second embodiments, each of the bent portions 28a and 48a is set between adjacent detectors (between the contact points A and B and the contact points C and D), but is not limited thereto. For example, it may be set anywhere as long as the groove intersects with the conducting portion, such as between the connector 32 (external output portion 33) and the detecting portion (contacts C and D).

さらに、第1、第2の実施形態において凹溝14はパッド部材10、92の左右方向に延在して陥没形成されたが、これに限定されずシートの前後方向に延在して配置してもよい。これによっても同様の効果が期待できる。   Further, in the first and second embodiments, the concave groove 14 is formed to be recessed by extending in the left-right direction of the pad members 10, 92, but is not limited thereto, and is arranged to extend in the front-rear direction of the seat. May be. The same effect can be expected by this.

本発明に係る車両用着座センサの取付構造は、クッション部に乗員が着座したことを検知する車両シートに用いるのに適している。   The vehicle seat sensor mounting structure according to the present invention is suitable for use in a vehicle seat that detects that an occupant is seated on a cushion portion.

2…車両シート、8…荷重検知装置、10…パッド部材、12…表皮部材、14…凹溝、24…第1導通部、26…第2導通部、28、48…第3導通部、28a、48a…曲成部、28b…第2曲成部、30…第4導通部、40…挿入孔、41…摺接部、42…R部、43、51、53、54…貫通孔、44…第1曲成部、50…導通部、A〜D…接点(検知部)。 DESCRIPTION OF SYMBOLS 2 ... Vehicle seat, 8 ... Load detection apparatus, 10 ... Pad member, 12 ... Skin member, 14 ... Groove, 24 ... 1st conduction | electrical_connection part, 26 ... 2nd conduction | electrical_connection part, 28, 48 ... 3rd conduction | electrical_connection part, 28a , 48a ... bent portion, 28b ... second bent portion, 30 ... fourth conducting portion, 40 ... insertion hole, 41 ... sliding contact portion, 42 ... R portion, 43, 51, 53, 54 ... through hole, 44 ... 1st bending part, 50 ... Conducting part, AD ... Contact (detection part).

Claims (6)

車両シート用パッド部材の着座側表面に当接して該パッド部材への荷重を検知する複数の検知部と、該検知部により検知された荷重信号を出力する外部出力部と、前記複数の検知部の間および前記検知部と前記外部出力部との間を導通する導通部とを備えるフィルム状荷重検知装置を、一部に陥没形成された凹溝を有する前記パッド部材の着座側表面と該着座側表面を覆うように前記パッド部材に装着される表皮部材との間で、前記導通部の少なくとも一部を曲成形成した曲成部を前記凹溝内に挿入して前記凹溝を横切るよう配置し、
前記凹溝の対向する溝内側面に前記曲成部の裏面が摺接する摺接部を設けるとともに、前記パッド部材における前記曲成部の挿入箇所に前記凹溝から該パッド部材の裏面に貫通する貫通孔を穿設し、着座荷重による前記パッド部材の上方向からの圧縮変形時に前記曲成部と前記摺接部との摺動により該曲成部を前記貫通孔内において上下方向に移動自在とし
前記貫通孔は、前記フィルム状荷重検知装置の前記曲成部の先端部が進入した状態で、前記フィルム状荷重検知装置の前記導通部の裏面が接触しないように、前記対向する摺接部の間隔より広い幅を有するように形成されていることを特徴とする荷重検知装置の取付構造。
A plurality of detection units that contact a seating side surface of a pad member for a vehicle seat and detect a load on the pad member, an external output unit that outputs a load signal detected by the detection unit, and the plurality of detection units And a seating-side surface of the pad member having a recessed groove formed in a part of the film-like load detecting device. Between the skin member attached to the pad member so as to cover the side surface, a bent portion formed by bending at least a part of the conducting portion is inserted into the concave groove so as to cross the concave groove. Place and
A sliding contact portion is provided on the inner surface of the groove facing the concave groove so that the back surface of the bent portion is in sliding contact, and the insertion portion of the pad member in the bent portion penetrates from the concave groove to the back surface of the pad member. A through hole is formed, and when the pad member is compressed and deformed from above by a seating load, the bent portion can be moved in the vertical direction by sliding between the bent portion and the sliding contact portion. and,
The through-hole is formed on the opposed sliding contact portion so that the back surface of the conducting portion of the film load detection device does not contact with the leading end of the bent portion of the film load detection device. A load detecting device mounting structure, wherein the load detecting device has a width wider than the interval .
請求項において、前記貫通孔が、前記摺接部に至るまで前記凹溝の対向する溝内側面に延在して形成されていることを特徴とする荷重検知装置の取付構造。 The load detecting device mounting structure according to claim 1 , wherein the through hole is formed to extend to an inner surface of the groove facing the concave groove until reaching the sliding contact portion. 請求項1または2において、前記導通部の前記摺接部と摺接する部分が前記導通部の他の部分より幅が小さく形成されていることを特徴とする荷重検知装置の取付構造。 3. The load detecting device mounting structure according to claim 1, wherein a width of a portion of the conducting portion that is in sliding contact with the sliding contact portion is smaller than that of the other portion of the conducting portion. 車両シート用パッド部材の着座側表面に当接して該パッド部材への荷重を検知する複数の検知部と、該検知部により検知された荷重信号を出力する外部出力部と、前記複数の検知部の間および前記検知部と前記外部出力部との間を導通する導通部とを備えるフィルム状荷重検知装置を、一部に陥没形成された凹溝を有する前記パッド部材の着座側表面と該着座側表面を覆うように前記パッド部材に装着される表皮部材との間で、前記導通部の少なくとも一部を曲成形成した曲成部を前記凹溝内に挿入して前記凹溝を横切るよう配置し、
前記凹溝の対向する溝内側面に前記曲成部の裏面が摺接する摺接部を設けるとともに、前記パッド部材における前記曲成部の挿入箇所に前記凹溝から該パッド部材の裏面に貫通する貫通孔を穿設し、着座荷重による前記パッド部材の上方向からの圧縮変形時に前記曲成部と前記摺接部との摺動により該曲成部を前記貫通孔内において上下方向に移動自在とし
前記導通部の前記摺接部と摺接する部分が前記導通部の他の部分より幅が小さく形成されていることを特徴とする荷重検知装置の取付構造。
A plurality of detection units that contact a seating side surface of a pad member for a vehicle seat and detect a load on the pad member, an external output unit that outputs a load signal detected by the detection unit, and the plurality of detection units And a seating-side surface of the pad member having a recessed groove formed in a part of the film-like load detecting device. Between the skin member attached to the pad member so as to cover the side surface, a bent portion formed by bending at least a part of the conducting portion is inserted into the concave groove so as to cross the concave groove. Place and
A sliding contact portion is provided on the inner surface of the groove facing the concave groove so that the back surface of the bent portion is in sliding contact, and the insertion portion of the pad member in the bent portion penetrates from the concave groove to the back surface of the pad member. A through hole is formed, and when the pad member is compressed and deformed from above by a seating load, the bent portion can be moved in the vertical direction by sliding between the bent portion and the sliding contact portion. and,
The load detecting device mounting structure, wherein a portion of the conducting portion that is in sliding contact with the sliding contact portion is formed to be smaller in width than the other portion of the conducting portion .
請求項1乃至請求項4のいずれか1項において、前記凹溝の溝内側面と前記着座側表面との接続部位にR部が形成されていることを特徴とする荷重検知装置の取付構造。   The load detection device mounting structure according to any one of claims 1 to 4, wherein an R portion is formed at a connection portion between the groove inner side surface of the concave groove and the seating side surface. 請求項1乃至請求項5のいずれか1項において、前記導通部を前記曲成形成し前記摺接部に当接させて取り付けたときに、前記凹溝を挟む2つの前記検知部のピッチが規定値となるように、前記2つの検知部間の前記導通部の長さが設定されていることを特徴とする荷重検知装置の取付構造。   6. The pitch of the two detection portions sandwiching the concave groove when the conductive portion is bent and attached to the sliding contact portion according to claim 1. The load detecting device mounting structure is characterized in that the length of the conducting portion between the two detecting portions is set so as to be a specified value.
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JP2010100912A JP5488167B2 (en) 2010-04-26 2010-04-26 Load detector mounting structure
PCT/JP2010/072470 WO2011078012A1 (en) 2009-12-21 2010-12-14 Structure and method for attaching load detecting device and sheet device
EP10839245.7A EP2517926B1 (en) 2009-12-21 2010-12-14 Structure and method for attaching load detecting device and sheet device
PCT/JP2010/072471 WO2011078013A1 (en) 2009-12-21 2010-12-14 Load detection device mounting structure
CN201080057675.XA CN102666194B (en) 2009-12-21 2010-12-14 Structure and method for attaching load detecting device and seat device
KR1020127017747A KR101407742B1 (en) 2009-12-21 2010-12-14 Structure for attaching load detecting device and sheet device
EP10839246.5A EP2517927B1 (en) 2009-12-21 2010-12-14 Load detection device mounting structure
BR112012018816-0A BR112012018816B1 (en) 2009-12-21 2010-12-14 SEAT CUSHION FOR A VEHICLE SEAT AND METHOD FOR MOUNTING A LOAD DETECTION DEVICE
CN201080055932.6A CN102652074B (en) 2009-12-21 2010-12-14 Load detection device mounting structure
KR1020127016184A KR101374089B1 (en) 2009-12-21 2010-12-14 Load detection device mounting structure
BR112012015132-0A BR112012015132B1 (en) 2009-12-21 2010-12-14 LOAD DETECTION DEVICE MOUNTING FRAME

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Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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JP2003212019A (en) * 2002-01-22 2003-07-30 Tachi S Co Ltd Seat cushion structure for vehicle seat
JP4000886B2 (en) * 2002-04-04 2007-10-31 マツダ株式会社 Vehicle seat device
JP2005233845A (en) * 2004-02-20 2005-09-02 Denso Corp Film sensor and wiring structure of sensor cell
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