JP2020095973A - Insertion detection switch - Google Patents

Abstract

To provide an insertion detection switch capable of being easily assembled and appropriately detecting insertion.SOLUTION: The insertion detection switch includes: a strip-shaped pressure-sensitive structure having at least one linear pressure-sensitive member formed by arranging a plurality of conductor wires in a spiral shape by being separated from each other inside a tubular elastic body; and a tubular cover member, attached to a front end of a moving body in a moving direction, having a hollow portion formed to accommodate the pressure-sensitive structure. The pressure-sensitive structure covers the at least one linear pressure-sensitive member. Both ends in a width direction orthogonal to the moving direction of the moving body and an extending direction of the cover member have a covering member facing an inner surface of the hollow portion. A position in the width direction of the at least one linear pressure-sensitive member in the hollow portion is defined by the covering member.SELECTED DRAWING: Figure 2B

Description

本発明は、例えば自動車等の車両における開口を閉塞するドア等の移動体による挟み込みを検知するための挟み込み検知スイッチに関する。 The present invention relates to a trapping detection switch for detecting trapping by a moving body such as a door that closes an opening of a vehicle such as an automobile.

従来、例えば自動車のスライドドアのように人体やその携行品の挟み込みが発生し得る移動体には、その移動方向前方側の端部に挟み込みを検知するための挟み込み検知スイッチが配置されている（例えば、特許文献１参照）。 2. Description of the Related Art Conventionally, a trapping detection switch for detecting trapping is arranged at an end portion on the front side in the moving direction of a moving body in which a trapping of a human body or a carried item thereof, such as a sliding door of an automobile, may occur. For example, see Patent Document 1).

特許文献１に記載の挟み込み検知スイッチ（コードスイッチ）は、コードスイッチ本体と、コードスイッチ本体をスライドドアに固定するためのブラケットとして機能する被取付部材とを備えている。コードスイッチ本体は、弾性及び絶縁性を有する中空の管状部材と、管状部材の内面に間隔を設けて対向して配置された複数の導体線と、管状部材を被覆するコードカバーとを備えている。 The pinch detection switch (cord switch) described in Patent Document 1 includes a cord switch body and an attached member that functions as a bracket for fixing the cord switch body to the slide door. The cord switch main body includes a hollow tubular member having elasticity and insulating properties, a plurality of conductor wires arranged on the inner surface of the tubular member so as to face each other at intervals, and a cord cover covering the tubular member. ..

コードカバーは、管状部材を収容する中空部が中心部に形成された筒状であり、この中空部に導体線を保持した管状部材が挿入されている。スライドドアの移動方向前方（閉方向）への移動中にコードカバーが挟み込みの検出対象（例えば人体）に衝突すると、その衝突による圧力によって管状部材に保持された導体線同士が接触し、導体線間の電気抵抗が変化する。そして、この電気抵抗の変化によって挟み込みの発生を検知することができる。 The cord cover is in the shape of a cylinder having a hollow portion in the center thereof for accommodating the tubular member, and the tubular member holding the conductor wire is inserted into the hollow portion. If the cord cover collides with a detection object (for example, a human body) for pinching while the slide door is moving forward (closed direction), the conductor wires held by the tubular member come into contact with each other due to the pressure caused by the collision, and the conductor wire The electrical resistance between them changes. Then, the occurrence of entrapment can be detected by the change in the electric resistance.

特開２０１４−２１６３００号公報JP, 2014-216300, A

特許文献１に記載の挟み込み検知スイッチは、組み立て時において、コードカバーのほぼ全長にわたってその中空部内に管状部材を挿入する必要があり、この作業が困難であった。また、コードカバーが管状部材に比較して十分に大きく、中空部の内面と管状部材の外周面との間に大きな摩擦力が発生しない場合には、中空部内に管状部材を容易に挿入することが可能であるが、この場合には中空部内における管状部材の位置が不安定となり、適切な挟み込みの検知が行えないおそれがあった。 The pinch detection switch described in Patent Document 1 requires a tubular member to be inserted into the hollow portion over substantially the entire length of the cord cover during assembly, which makes this operation difficult. In addition, if the cord cover is sufficiently larger than the tubular member and a large frictional force does not occur between the inner surface of the hollow portion and the outer peripheral surface of the tubular member, the tubular member should be easily inserted into the hollow portion. However, in this case, the position of the tubular member in the hollow portion becomes unstable, and there is a possibility that proper detection of entrapment cannot be performed.

そこで、本発明は、組み立てが容易で、かつ挟み込みの検知を適切に行うことが可能な挟み込み検知スイッチを提供することを目的とする。 Therefore, an object of the present invention is to provide an entrapment detection switch which is easy to assemble and which can appropriately detect entrapment.

本発明は、上記課題を解決するため、複数の導体線を管状の弾性体の内側に互いに離間して螺旋状に配置してなる少なくとも１つの線状感圧部材を有する帯状の感圧構造体と、移動体の移動方向前方側の端部に取り付けられ、前記感圧構造体を収容する中空部が形成された筒状のカバー部材と、を備え、前記感圧構造体は、前記少なくとも１つの線状感圧部材を覆い、かつ前記移動体の移動方向及び前記カバー部材の延伸方向に直交する幅方向の両端部が前記中空部の内面に対向する被覆部材を有し、前記少なくとも１つの線状感圧部材の前記中空部内における前記幅方向の位置が前記被覆部材によって規定されており、前記被覆部材は前記カバー部材に対して固定されていない、挟み込み検知スイッチを提供する。 In order to solve the above-mentioned problems, the present invention has a strip-shaped pressure-sensitive structure having at least one linear pressure-sensitive member in which a plurality of conductor wires are spirally arranged inside a tubular elastic body so as to be spaced apart from each other. And a tubular cover member that is attached to an end portion on the front side in the moving direction of the moving body and has a hollow portion that accommodates the pressure-sensitive structure. At least one of the at least one linear pressure-sensitive member has a covering member that covers both ends of the moving body in a width direction orthogonal to the moving direction of the moving body and the extending direction of the cover member and faces the inner surface of the hollow portion. The pinch detection switch is provided in which the position of the linear pressure-sensitive member in the hollow portion in the width direction is defined by the covering member, and the covering member is not fixed to the cover member.

本発明に係る挟み込み検知スイッチによれば、組み立てが容易で、かつ挟み込みの検知を適切に行うことが可能となる。 According to the entrapment detection switch of the present invention, it is easy to assemble and it is possible to appropriately detect the entrapment.

本発明の実施の形態に係る挟み込み検知スイッチの適用対象の一例である車両を示す構成図である。It is a block diagram which shows the vehicle which is an example of the application target of the trapping detection switch which concerns on embodiment of this invention. 挟み込み検知スイッチを長手方向直交断面で示す断面図である。It is sectional drawing which shows a pinch detection switch by a cross section orthogonal to a longitudinal direction. 挟み込み検知スイッチを示す斜視図である。It is a perspective view showing a pinch detection switch. １本の線状感圧部材３１を示す斜視図である。It is a perspective view showing one linear pressure sensitive member 31. 線状感圧部材によってスライドドアによる挟み込みを検知するための電気回路の一例を制御装置及び電動モータと共に示す回路図である。FIG. 4 is a circuit diagram showing an example of an electric circuit for detecting pinching by a linear door with a linear pressure-sensitive member, together with a control device and an electric motor. 検出対象がスライドドアの移動方向に沿って挟み込み検知スイッチのカバー部材に接触したときの状態を示す説明図である。It is explanatory drawing which shows a state when a detection target contacts the cover member of a pinch detection switch along the moving direction of a slide door. 検出対象がスライドドアの移動方向に対して傾斜した方向に沿ってカバー部材に接触したときの状態を示す説明図である。It is explanatory drawing which shows a state when a detection target contacts a cover member along the direction inclined with respect to the moving direction of a slide door. 挟み込み検知スイッチの製造時においてカバー部材の中空部内に感圧構造体を挿入する組み立て工程を示す説明図である。It is explanatory drawing which shows the assembly process which inserts a pressure sensitive structure in the hollow part of a cover member at the time of manufacture of a pinch detection switch. 第１の変形例に係る挟み込み検知スイッチを示す断面図である。It is sectional drawing which shows the pinch detection switch which concerns on a 1st modification. 第２の変形例に係る挟み込み検知スイッチを示す断面図である。It is sectional drawing which shows the pinch detection switch which concerns on a 2nd modification. 第３の変形例に係る挟み込み検知スイッチを示す断面図である。It is sectional drawing which shows the pinch detection switch which concerns on a 3rd modification.

［実施の形態］
図１は、本発明の実施の形態に係る挟み込み検知スイッチ（挟み込み検知センサ、ドアセンサ、ドアスイッチともいう）の適用対象の一例である車両を示す概略図である。 [Embodiment]
FIG. 1 is a schematic diagram showing a vehicle that is an example of an application target of a trapping detection switch (also referred to as a trapping detection sensor, a door sensor, or a door switch) according to an embodiment of the present invention.

この車両１は、車体１０と、車体１０に形成されたドア開口部１００を開放及び閉塞することが可能なスライドドア１１とを有している。スライドドア１１は、アッパーガイドレール１０１及びロアガイドレール１０２に案内され、電動モータの駆動力によって車両１の前後方向に移動する。スライドドア１１が車両１の前方に移動すると、ドア開口部１００が閉塞される。スライドドア１１は、本発明の移動体の一態様である。また、以下の説明では、その閉方向である車両前方を移動方向前方として説明する。 The vehicle 1 has a vehicle body 10 and a slide door 11 capable of opening and closing a door opening 100 formed in the vehicle body 10. The sliding door 11 is guided by the upper guide rail 101 and the lower guide rail 102, and moves in the front-rear direction of the vehicle 1 by the driving force of the electric motor. When the sliding door 11 moves to the front of the vehicle 1, the door opening 100 is closed. The slide door 11 is an aspect of the moving body of the present invention. Further, in the following description, the front side of the vehicle, which is the closing direction, will be described as the front in the moving direction.

スライドドア１１の移動方向前方側の端部には、挟み込み検知スイッチ２が車両上下方向に沿って延在して配置されている。スライドドア１１の閉動作時に挟み込み検知スイッチ２が挟み込みの検出対象である人体又はその携行品に接触すると、その接触が制御装置によって検知され、制御装置が電動モータを停止又は反転させる。これにより、検出対象がスライドドア１１と車体１０との間に強く挟まれることを防止することができる。 The trapping detection switch 2 is arranged at the end of the sliding door 11 on the front side in the moving direction so as to extend in the vehicle vertical direction. When the entrapment detection switch 2 comes into contact with the human body that is the object of entrapment detection or its carrying item during the closing operation of the slide door 11, the contact is detected by the control device, and the control device stops or reverses the electric motor. This can prevent the detection target from being strongly sandwiched between the slide door 11 and the vehicle body 10.

図２Ａは、挟み込み検知スイッチ２を長手方向直交断面で示す断面図である。図２Ｂは、挟み込み検知スイッチ２を示す斜視図である。図２Ａでは、図示上下方向がスライドドア１１の移動方向にあたり、スライドドア１１の移動方向前方を矢印Ａで示している。以下、スライドドア１１の移動方向前方を、単に移動方向前方という。 FIG. 2A is a cross-sectional view showing the entrapment detection switch 2 in a cross section orthogonal to the longitudinal direction. FIG. 2B is a perspective view showing the entrapment detection switch 2. In FIG. 2A, the vertical direction in the drawing corresponds to the moving direction of the slide door 11, and the front of the moving direction of the slide door 11 is indicated by an arrow A. Hereinafter, the front in the moving direction of the slide door 11 is simply referred to as the front in the moving direction.

挟み込み検知スイッチ２は、線状感圧部材３１及びこの線状感圧部材３１を覆う被覆部材３２を有する感圧構造体３と、感圧構造体３を収容する中空部４０が形成された筒状のカバー部材４とを備えている。本実施の形態では、感圧構造体３が帯状（図２Ａでは、円弧状）であり、スライドドア１１の移動方向前方側の端部の略全体にわたって配置されている。また、本実施の形態では、感圧構造体３が３本の線状感圧部材３１を有しており、これら３本の線状感圧部材３１が挟み込み検知スイッチ２の長手方向（カバー部材４の延伸方向）に沿って互いに平行に配置されている。ただし、感圧構造体３における線状感圧部材３１の本数は３本に限らず、１本又は２本でもよく、４本以上でもよい。すなわち、感圧構造体３は、少なくとも１つの線状感圧部材３１を有していればよい。 The pinch detection switch 2 is a cylinder in which a pressure-sensitive structure 3 having a linear pressure-sensitive member 31 and a covering member 32 that covers the linear pressure-sensitive member 31 and a hollow portion 40 that houses the pressure-sensitive structure 3 are formed. And a cover member 4 having a shape. In the present embodiment, the pressure-sensitive structure 3 has a strip shape (an arc shape in FIG. 2A) and is arranged over substantially the entire end of the slide door 11 on the front side in the moving direction. Further, in the present embodiment, the pressure-sensitive structure 3 has three linear pressure-sensitive members 31, and these three linear pressure-sensitive members 31 sandwich the pinch detection switch 2 in the longitudinal direction (cover member). 4) in parallel with each other. However, the number of linear pressure-sensitive members 31 in the pressure-sensitive structure 3 is not limited to three, and may be one, two, or four or more. That is, the pressure sensitive structure 3 may have at least one linear pressure sensitive member 31.

図３は、１本の線状感圧部材３１を示す斜視図である。線状感圧部材３１は、管状の弾性体であるチューブ３１１と、チューブ３１１の内側に互いに離間して配置された複数の導体線３１２とを有している。より詳細には、チューブ３１１の内面に４本の導体線３１２がその一部を露出させて螺旋状に保持されており、断面十字形の空間３１０がチューブ３１１の中心部に形成されている。それぞれの導体線３１２は、例えば複数の金属素線を撚り合わせた金属撚線３１２ａを導電性被覆層３１２ｂにより被覆してなる。チューブ３１１は、例えばシリコーンゴムやエチレンプロピレンゴム等のゴム材料からなり、外力が加わることにより変形し、外力がなくなれば直ちに復元する弾性を有している。チューブ３１１に外力が加わっていない自然状態では、複数の導体線３１２が互いに非接触に保持されている。 FIG. 3 is a perspective view showing one linear pressure-sensitive member 31. The linear pressure-sensitive member 31 has a tube 311 that is a tubular elastic body, and a plurality of conductor wires 312 that are arranged inside the tube 311 and are separated from each other. More specifically, the four conductor wires 312 are held in a spiral shape by exposing a part of them on the inner surface of the tube 311, and a space 310 having a cross shape in cross section is formed at the center of the tube 311. Each conductor wire 312 is formed, for example, by coating a metal stranded wire 312a obtained by twisting a plurality of metal element wires with a conductive coating layer 312b. The tube 311 is made of, for example, a rubber material such as silicone rubber or ethylene propylene rubber, and has elasticity such that it deforms when an external force is applied, and immediately restores when the external force disappears. In the natural state where no external force is applied to the tube 311, the plurality of conductor wires 312 are held in non-contact with each other.

本実施の形態では、被覆部材３２が３本の線状感圧部材３１を一括して覆っている。カバー部材４の延伸方向及びスライドドア１１の移動方向に直交する方向を被覆部材３２の幅方向としたとき、３本の線状感圧部材３１は、この幅方向に等間隔に並んでいる。図２Ａでは、この幅方向を矢印Ｂで示している。被覆部材３２は、モールド成形により形成され、幅方向中央部が移動方向前方側に突出するように弓形に湾曲してカバー部材４の中空部４０に収容されている。つまり、感圧構造体３は、線状感圧部材３１を被覆部材３２によってモールドしたモールド成形体であり、本実施の形態では３本の線状感圧部材３１が被覆部材３２に一括して保持されている。 In the present embodiment, the covering member 32 collectively covers the three linear pressure sensitive members 31. When the direction orthogonal to the extending direction of the cover member 4 and the moving direction of the slide door 11 is the width direction of the covering member 32, the three linear pressure sensitive members 31 are arranged at equal intervals in this width direction. In FIG. 2A, this width direction is indicated by arrow B. The covering member 32 is formed by molding and is housed in the hollow portion 40 of the cover member 4 so as to be curved in an arc shape so that the central portion in the width direction projects forward in the moving direction. That is, the pressure-sensitive structure 3 is a molded body obtained by molding the linear pressure-sensitive member 31 with the covering member 32, and in the present embodiment, the three linear pressure-sensitive members 31 are collectively formed on the covering member 32. Is held.

以下の説明において、線状感圧部材３１の３本の線状感圧部材３１のそれぞれを区別する必要がある場合には、感圧構造体３の幅方向中央部３ａに配置された線状感圧部材３１を第１の線状感圧部材３１Ａとし、他の２つの線状感圧部材３１を第２の線状感圧部材３１Ｂ及び第３の線状感圧部材３１Ｃとして説明する。第２及び第３の線状感圧部材３１Ｂ，３１Ｃは、感圧構造体３の幅方向の中央部３ａの幅方向両側における幅方向両端部３ｂ，３ｃにそれぞれ配置されている。 In the following description, when it is necessary to distinguish each of the three linear pressure-sensitive members 31 of the linear pressure-sensitive member 31, the linear shape arranged in the width-direction central portion 3 a of the pressure-sensitive structure 3. The pressure-sensitive member 31 will be described as a first linear pressure-sensitive member 31A, and the other two linear pressure-sensitive members 31 will be described as a second linear pressure-sensitive member 31B and a third linear pressure-sensitive member 31C. The second and third linear pressure-sensitive members 31B and 31C are arranged at both width-direction end portions 3b and 3c on both sides in the width direction of the center portion 3a of the pressure-sensitive structure 3 in the width direction.

カバー部材４は、スライドドア１１の移動方向前方側の端部に設けられた取付部１１１に固定されたベース部４１と、ベース部４１よりも移動方向前方側に設けられ、ベース部４１との間に中空部４０を形成するカバー部４２と、ベース部４１からカバー部４２に向かって突出して設けられた突部４３とを一体に有している。カバー部材４ならびに被覆部材３２は、例えばウレタンゴム、ＥＰゴム、シリコーンゴム、スチレンブタンジエンゴム、クロロプレンゴム、オレフィン系又はスチレン系の熱可塑性エラストマ、あるいはウレタン樹脂等からなり、検出対象との接触による押圧力によって変形する弾性を有している。 The cover member 4 includes a base portion 41 fixed to a mounting portion 111 provided at an end portion on the front side in the moving direction of the slide door 11, and a base portion 41 provided on the front side in the moving direction with respect to the base portion 41. A cover portion 42 that forms a hollow portion 40 therebetween and a protrusion 43 that is provided so as to protrude from the base portion 41 toward the cover portion 42 are integrally provided. The cover member 4 and the covering member 32 are made of, for example, urethane rubber, EP rubber, silicone rubber, styrene butanediene rubber, chloroprene rubber, olefin-based or styrene-based thermoplastic elastomer, or urethane resin, etc. It has elasticity to be deformed by the pressing force.

突部４３は、感圧構造体３の幅方向の中央部３ａとスライドドア１１の移動方向に向かい合う。換言すれば、感圧構造体３の幅方向の中央部３ａと突部４３とがスライドドア１１の移動方向に並んでいる。また、突部４３は、ベース部４１の移動方向前方側の端面４１ａからカバー部４２に向かって突出しており、図２Ａに示す断面（スライドドア１１の移動方向及びカバー部材４の延伸方向に直交する断面）における形状が台形状である。 The protrusion 43 faces the center portion 3 a of the pressure sensitive structure 3 in the width direction and the moving direction of the slide door 11. In other words, the central portion 3a of the pressure-sensitive structure 3 in the width direction and the protrusion 43 are aligned in the moving direction of the slide door 11. The projection 43 projects from the end face 41a on the front side in the moving direction of the base 41 toward the cover 42, and is orthogonal to the cross section shown in FIG. 2A (the moving direction of the slide door 11 and the extending direction of the cover member 4). The shape in the cross section) is a trapezoid.

以下、突部４３の突出方向の先端面を頂面４３ａとし、その両側の面を側面４３ｂとして説明する。頂面４３ａは台形状の上底にあたり、両側面４３ｂは台形状の脚にあたる。頂面４３ａと両側面４３ｂとは、図２Ａに示す断面において鈍角をなす。本実施の形態では、感圧構造体３が、中空部４０内において、突部４３の頂面４３ａと、両側面４３ｂのそれぞれの少なくとも一部とを覆うように湾曲している。 Hereinafter, the tip end surface of the protrusion 43 in the protruding direction will be referred to as a top surface 43a, and the surfaces on both sides thereof will be referred to as side surfaces 43b. The top surface 43a corresponds to a trapezoidal upper bottom, and the both side surfaces 43b correspond to trapezoidal legs. The top surface 43a and both side surfaces 43b form an obtuse angle in the cross section shown in FIG. 2A. In the present embodiment, the pressure-sensitive structure 3 is curved in the hollow portion 40 so as to cover the top surface 43a of the protrusion 43 and at least a part of each of the side surfaces 43b.

被覆部材３２は、カバー部材４に対して固定されておらず、被覆部材３２の中空部４０内での移動は、被覆部材３２の幅方向の端部３２１が中空部４０の内面４０ａに対向することによって規制されている。そして、第１乃至第３の線状感圧部材３１Ａ〜３１Ｃの中空部４０内における矢印Ｂ方向（被覆部材３２の幅方向）の位置が、被覆部材３２によって規定されている。このうち、第１の線状感圧部材３１Ａは、突部４３の頂面４３ａの移動方向前方にあたる位置に位置決めされる。 The covering member 32 is not fixed to the cover member 4, and the movement of the covering member 32 within the hollow portion 40 is such that the end 321 in the width direction of the covering member 32 faces the inner surface 40 a of the hollow portion 40. Is regulated by The position of the first to third linear pressure-sensitive members 31A to 31C in the hollow portion 40 in the arrow B direction (the width direction of the covering member 32) is defined by the covering member 32. Of these, the first linear pressure-sensitive member 31A is positioned at a position in front of the top surface 43a of the protrusion 43 in the moving direction.

つまり、例えば挟み込み検知スイッチ２の検出対象との接触によって感圧構造体３が被覆部材３２の幅方向に移動する方向の力を受けても、その移動量が被覆部材３２における当該移動方向の端部３２１と中空部４０の内面４０ａとの接触によって制限される。本実施の形態では、被覆部材３２の幅方向の両端部３２１，３２１が共に中空部４０の内面４０ａに当接するように被覆部材３２の幅方向寸法が設定されているが、これに限らず、感圧構造体３が被覆部材３２の幅方向一側に移動したときに、被覆部材３２の当該幅方向一側の端部３２１が中空部４０の内面４０ａに当接し、感圧構造体３が被覆部材３２の幅方向他側に移動したときに、被覆部材３２の当該幅方向他側の端部３２１が中空部４０の内面４０ａに当接するようにしてもよい。 That is, for example, even if the pressure-sensitive structure 3 receives a force in the direction in which the pressure-sensitive structure 3 moves in the width direction of the covering member 32 due to contact with the detection target of the pinch detection switch 2, the amount of movement of the covering member 32 is the end in the moving direction. It is limited by the contact between the portion 321 and the inner surface 40a of the hollow portion 40. In the present embodiment, the widthwise dimension of the covering member 32 is set so that both ends 321 and 321 in the widthwise direction of the covering member 32 come into contact with the inner surface 40a of the hollow portion 40, but the present invention is not limited to this. When the pressure-sensitive structure 3 moves to one side in the width direction of the covering member 32, the end 321 on the one side in the width direction of the covering member 32 comes into contact with the inner surface 40a of the hollow portion 40, and the pressure-sensitive structure 3 moves. When the covering member 32 moves to the other side in the width direction, the end 321 on the other side in the width direction of the covering member 32 may contact the inner surface 40a of the hollow portion 40.

ただし、本実施の形態のように、挟み込みが発生していない平常時において、被覆部材３２の幅方向両端部３２１，３２１が共に中空部４０の内面４０ａに当接しているようにすれば、より正確に第１の線状感圧部材３１Ａを突部４３の頂面４３ａの移動方向前方にあたる位置に位置決めすることができ、挟み込みの検出精度を高めることが可能となる。なお、中空部４０の内面４０ａは、ベース部４１の移動方向前方側の端面４１ａ及びカバー部４２の内面４２ａを含んでいる。 However, as in the case of the present embodiment, if the both widthwise end portions 321 and 321 of the covering member 32 are both in contact with the inner surface 40a of the hollow portion 40 in a normal state in which no entrapment occurs, it is more effective. It is possible to accurately position the first linear pressure-sensitive member 31A at a position in front of the top surface 43a of the protrusion 43 in the moving direction, and it is possible to improve the detection accuracy of pinching. The inner surface 40a of the hollow portion 40 includes the end surface 41a on the front side in the moving direction of the base portion 41 and the inner surface 42a of the cover portion 42.

図４は、線状感圧部材３１によってスライドドア１１による挟み込みを検知するための電気回路５の一例を制御装置６及びスライドドア１１を駆動する電動モータ７と共に示す回路図である。この電気回路５は、線状感圧部材３１の４本の導体線３１２を含んで構成され、電源５１と、４本の導体線３１２のうち２本の導体線３１２の端部同士を接続する接触検知用の抵抗器５２と、電源５１と直列に接続された電流計５３及び電流制限用の抵抗器５４と、を有している。４本の導体線３１２は、抵抗器５２を含んで直列に接続されている。電流計５３は、例えばホールＩＣ等の電流センサ及び増幅器を有して構成され、その検出信号が制御装置６に出力される。 FIG. 4 is a circuit diagram showing an example of the electric circuit 5 for detecting the pinch by the slide door 11 by the linear pressure-sensitive member 31, together with the control device 6 and the electric motor 7 that drives the slide door 11. The electric circuit 5 is configured to include the four conductor wires 312 of the linear pressure-sensitive member 31, and connects the power source 51 and the ends of the two conductor wires 312 of the four conductor wires 312 to each other. It has a resistor 52 for contact detection, an ammeter 53 and a resistor 54 for current limitation, which are connected in series with the power supply 51. The four conductor wires 312 including the resistor 52 are connected in series. The ammeter 53 is configured to include a current sensor such as a Hall IC and an amplifier, and the detection signal thereof is output to the control device 6.

上記のように構成された電気回路５において、線状感圧部材３１が押圧されて導体線３１２同士が接触すると、４本の導体線３１２及び抵抗器５２が直列に接続された線路５０における電気抵抗が変化する。この電気抵抗の変化は、電流計５３によって検出される電流の変化として制御装置６において検知され、線状感圧部材３１が押圧されたことが認識される。制御装置６は、スライドドア１１の閉動作中に線状感圧部材３１が押圧されたことを認識したとき、電動モータ７を停止又は反転させる。 In the electric circuit 5 configured as described above, when the linear pressure-sensitive member 31 is pressed and the conductor wires 312 come into contact with each other, the electricity in the line 50 in which the four conductor wires 312 and the resistor 52 are connected in series is set. The resistance changes. This change in electric resistance is detected by the control device 6 as a change in current detected by the ammeter 53, and it is recognized that the linear pressure sensitive member 31 has been pressed. When the controller 6 recognizes that the linear pressure sensitive member 31 is pressed during the closing operation of the slide door 11, the controller 6 stops or reverses the electric motor 7.

なお、図４では、１本の線状感圧部材３１に対応する電気回路５のみを示しているが、本実施の形態では、感圧構造体３が３本の線状感圧部材３１を有しているので、これらそれぞれの線状感圧部材３１に対応して電気回路５が設けられており、それぞれの電気回路５の電流計５３の検出信号が制御装置６に出力される。制御装置６は、いずれかの線状感圧部材３１が押圧されたことを認識したとき、電動モータ７を停止又は反転させる。 Although only the electric circuit 5 corresponding to one linear pressure-sensitive member 31 is shown in FIG. 4, the pressure-sensitive structure 3 includes three linear pressure-sensitive members 31 in the present embodiment. Since it has, the electric circuit 5 is provided corresponding to each of these linear pressure sensitive members 31, and the detection signal of the ammeter 53 of each electric circuit 5 is output to the control device 6. The control device 6 stops or reverses the electric motor 7 when recognizing that one of the linear pressure sensitive members 31 is pressed.

図５は、検出対象がスライドドア１１の移動方向に沿って挟み込み検知スイッチ２のカバー部材４に接触したときの状態を示す説明図である。図５では、挟み込み検知スイッチ２に作用する圧力の方向を矢印Ｃで示している。この場合には、第１の線状感圧部材３１Ａが突部４３の頂面４３ａとカバー部４２の内面４２ａとの間に挟まれ、第１の線状感圧部材３１Ａの導体線３１２同士が接触（短絡）する。そして、スライドドア１１による挟み込みの発生が第１の線状感圧部材３１Ａによって検出される。 FIG. 5 is an explanatory diagram showing a state in which the detection target comes into contact with the cover member 4 of the pinch detection switch 2 along the moving direction of the slide door 11. In FIG. 5, the direction of pressure acting on the trapping detection switch 2 is indicated by an arrow C. In this case, the first linear pressure sensitive member 31A is sandwiched between the top surface 43a of the protrusion 43 and the inner surface 42a of the cover portion 42, and the conductor wires 312 of the first linear pressure sensitive member 31A are connected to each other. Contact (short circuit). Then, the occurrence of pinching by the slide door 11 is detected by the first linear pressure sensitive member 31A.

図６は、検出対象がスライドドア１１の移動方向に対して傾斜した方向に沿ってカバー部材４に接触したときの状態を示す説明図である。このような接触状態（図５のような検出ができないケース）は、例えば車両１の外側の者の携行品（例えば紐付きパスケース）がスライドドア１１の内側に取り残され、その者がその携行品を車外から引っ張る場合などに生じ得る。図６では、挟み込み検知スイッチ２に作用する圧力の方向を矢印Ｄで示している。この図示例では、第２の線状感圧部材３１Ｂが突部４３の側面４３ｂとカバー部４２の内面４２ａとの間に挟まれ、その導体線３１２同士が接触（短絡）する。そして、スライドドア１１による挟み込みが第２の線状感圧部材３１Ｂによって検出される。 FIG. 6 is an explanatory diagram showing a state in which the detection target comes into contact with the cover member 4 along a direction inclined with respect to the moving direction of the slide door 11. In such a contact state (a case where detection as shown in FIG. 5 cannot be performed), for example, a carry item of a person outside the vehicle 1 (for example, a pass case with a string) is left behind inside the slide door 11, and the person carries the carry item. Can occur when pulling the car from outside the vehicle. In FIG. 6, the direction of pressure acting on the entrapment detection switch 2 is indicated by an arrow D. In the illustrated example, the second linear pressure-sensitive member 31B is sandwiched between the side surface 43b of the protrusion 43 and the inner surface 42a of the cover portion 42, and the conductor wires 312 make contact (short circuit). Then, the trapping by the slide door 11 is detected by the second linear pressure sensitive member 31B.

なお、図示は省略しているが、検出対象がスライドドア１１の移動方向に対して反対方向に傾斜した方向（図６に二点鎖線で示す矢印Ｅ方向）に沿ってカバー部材４に接触した場合には、第３の線状感圧部材３１Ｃの導体線３１２同士が接触（短絡）する。 Although not shown, the detection target comes into contact with the cover member 4 along a direction inclined in a direction opposite to the moving direction of the slide door 11 (direction of arrow E indicated by a chain double-dashed line in FIG. 6). In this case, the conductor wires 312 of the third linear pressure-sensitive member 31C come into contact with each other (short-circuit).

図７は、挟み込み検知スイッチ２の製造時においてカバー部材４の中空部４０内に感圧構造体３を挿入する組み立て工程を示す説明図である。図７では、感圧構造体３の挿入方向を矢印Ｆで示している。 FIG. 7 is an explanatory view showing an assembly process of inserting the pressure-sensitive structure 3 into the hollow portion 40 of the cover member 4 when manufacturing the trapping detection switch 2. In FIG. 7, the insertion direction of the pressure sensitive structure 3 is indicated by an arrow F.

感圧構造体３は、カバー部材４の中空部４０に収容される前の自然状態において、被覆部材３２が平板状である。そして、被覆部材３２を弾性変形させて弓形に湾曲させながら感圧構造体３が中空部４０内に挿入される。被覆部材３２は、その復元力によって幅方向の両端部３２１，３２１が中空部４０の内面４０ａに当接（弾接）し、内面４０ａを摺動しながら中空部４０に挿入される。なお、この際の摺動抵抗を抑制するため、中空部４０の内面４０ａに摺接する被覆部材３２の表面に潤滑剤を塗布するとよい。 In the pressure-sensitive structure 3, the covering member 32 has a flat plate shape in a natural state before being housed in the hollow portion 40 of the cover member 4. Then, the pressure-sensitive structure 3 is inserted into the hollow portion 40 while elastically deforming the covering member 32 to bend it into an arc shape. Both ends 321 and 321 in the width direction of the covering member 32 come into contact (elastic contact) with the inner surface 40a of the hollow portion 40 due to the restoring force, and are inserted into the hollow portion 40 while sliding on the inner surface 40a. In order to suppress the sliding resistance at this time, it is preferable to apply a lubricant to the surface of the covering member 32 that is in sliding contact with the inner surface 40a of the hollow portion 40.

（変形例）
図８乃至図１０は、実施の形態の変形例に係る挟み込み検知スイッチ２Ａ〜２Ｃを示す断面図である。図８乃至図１０において、上記の実施の形態において説明したものと共通する構成要素については、図２Ａ等に用いた符号と同じ符号を付して重複した説明を省略する。 (Modification)
8 to 10 are cross-sectional views showing the trapping detection switches 2A to 2C according to the modification of the embodiment. 8 to 10, the same components as those described in the above embodiment are denoted by the same reference numerals as those used in FIG. 2A and the like, and duplicated description will be omitted.

図８に示す第１の変形例は、感圧構造体３が１つの線状感圧部材３１のみを有する場合の変形例である。この場合、当該１つの線状感圧部材３１がカバー部材４の突部４３の移動方向前方側に配置される。この構成では、上記の実施の形態に比較して、検出対象がスライドドア１１の移動方向に対して傾斜した方向に沿ってカバー部材４に接触したときには、挟み込みの検出精度が低下するが、最も発生頻度が高いスライドドア１１の移動方向に沿う方向の挟み込みの発生については、確実に検出することが可能である。 The first modification shown in FIG. 8 is a modification in which the pressure-sensitive structure 3 has only one linear pressure-sensitive member 31. In this case, the one linear pressure sensitive member 31 is arranged on the front side in the moving direction of the protrusion 43 of the cover member 4. In this configuration, as compared with the above embodiment, when the detection target comes into contact with the cover member 4 along the direction inclined with respect to the moving direction of the slide door 11, the detection accuracy of the entrapment is reduced, but It is possible to reliably detect the occurrence of trapping in the direction along the moving direction of the slide door 11 that frequently occurs.

図９に示す第２の変形例は、感圧構造体３が２つの線状感圧部材３１を有する場合の変形例である。この場合、当該２つの線状感圧部材３１が、カバー部材４の突部４３における頂面４３ａと両側面４３ｂとの角部の移動方向前方側に配置される。この構成では、上記の実施の形態に比較して、線状感圧部材３１の数を減らしてコストを低減しつつも、スライドドア１１の移動方向に沿う方向の挟み込み、ならびにスライドドア１１の移動方向に対して傾斜した方向の挟み込みを検知し得る。 The second modification shown in FIG. 9 is a modification in which the pressure-sensitive structure 3 has two linear pressure-sensitive members 31. In this case, the two linear pressure-sensitive members 31 are arranged on the front side in the moving direction of the corners between the top surface 43a and the side surfaces 43b of the protrusion 43 of the cover member 4. In this configuration, as compared with the above-described embodiment, the number of linear pressure sensitive members 31 is reduced and the cost is reduced, while sandwiching the slide door 11 in the direction along the moving direction and moving the slide door 11. Entrapment in a direction inclined with respect to the direction can be detected.

図１０に示す第３の変形例は、感圧構造体３が１つの線状感圧部材３１のみを有すると共に、この１つの線状感圧部材３１に向かって突出する突部４４が、カバー部材４のカバー部４２からスライドドア１１の移動方向後方側に突出して設けられている。被覆部材３２は、平板状の形状を保ってベース部４１の移動方向前方側の端面４１ａに向かい合い、幅方向の両端部３２１，３２１とカバー部４２の内面４２ａとの間には僅かな隙間がそれぞれ形成されている。被覆部材３２の幅方向への移動は、この隙間が詰まって被覆部材３２の両端部３２１，３２１のうち何れかの端部３２１が中空部４０の内面４０ａの一部であるカバー部４２の内面４２ａに当接することにより制限される。これにより、線状感圧部材３１の位置が突部４４の移動方向後方側に規定される。 In the third modified example shown in FIG. 10, the pressure-sensitive structure 3 has only one linear pressure-sensitive member 31, and the protrusion 44 protruding toward the one linear pressure-sensitive member 31 has a cover. It is provided so as to project from the cover portion 42 of the member 4 to the rear side in the moving direction of the slide door 11. The covering member 32 faces the front end surface 41a of the base portion 41 in the moving direction while maintaining a flat plate shape, and a slight gap is formed between the widthwise both end portions 321 and 321 and the inner surface 42a of the cover portion 42. Each is formed. When the covering member 32 is moved in the width direction, the gap is closed, and one end 321 of both ends 321 and 321 of the covering member 32 is an inner surface of the cover portion 42 which is a part of the inner surface 40a of the hollow portion 40. It is limited by abutting 42a. As a result, the position of the linear pressure sensitive member 31 is defined on the rear side in the moving direction of the protrusion 44.

（実施の形態の作用及び効果）
以上説明した実施の形態及びその変形例によれば、線状感圧部材３１とカバー部材４における中空部４０の内面４０ａとの間に被覆部材３２が介在し、この被覆部材３２によって線状感圧部材３１の位置が規定される。また、挟み込み検知スイッチ２の製造時においてカバー部材４の中空部４０内に感圧構造体３を挿入する際には、この挿入方向における感圧構造体３の剛性が被覆部材３２によって確保されると共に、被覆部材３２の外表面のうち中空部４０の内面４０ａに接する面積の割合が限定的であるので、この作業を容易に行うことができる。これにより、組み立てが容易で、かつ挟み込みの検知を適切に行うことが可能となる。 (Operation and Effect of Embodiment)
According to the above-described embodiment and its modification, the covering member 32 is interposed between the linear pressure-sensitive member 31 and the inner surface 40a of the hollow portion 40 of the cover member 4, and the covering member 32 causes the linear feeling. The position of the pressure member 31 is defined. Further, when the pressure-sensitive structure 3 is inserted into the hollow portion 40 of the cover member 4 during the manufacture of the pinch detection switch 2, the cover member 32 ensures the rigidity of the pressure-sensitive structure 3 in the insertion direction. At the same time, since the ratio of the area of the outer surface of the covering member 32 in contact with the inner surface 40a of the hollow portion 40 is limited, this work can be easily performed. As a result, it is easy to assemble and it is possible to appropriately detect the entrapment.

（実施の形態のまとめ）
次に、以上説明した実施の形態から把握される技術思想について、実施の形態における符号等を援用して記載する。ただし、以下の記載における各符号は、特許請求の範囲における構成要素を実施の形態に具体的に示した部材等に限定するものではない。 (Summary of Embodiments)
Next, the technical idea grasped from the above-described embodiment will be described with reference to the reference numerals and the like in the embodiment. However, each reference numeral in the following description does not limit the constituent elements in the claims to the members and the like specifically shown in the embodiments.

［１］複数の導体線（３１２）を管状の弾性体の内側に互いに離間して配置してなる少なくとも１つの線状感圧部材（３１）を有する感圧構造体（３）と、移動体（スライドドア１１）の移動方向前方側の端部に取り付けられ、前記感圧構造体（３）を収容する中空部（４０）が形成された筒状のカバー部材（４）と、を備え、前記感圧構造体（３）は、前記少なくとも１つの線状感圧部材（３１）を覆い、かつ前記移動体（１１）の移動方向及び前記カバー部材（４）の延伸方向に直交する幅方向の両端部（３２１，３２１）が前記中空部（４０）の内面（４２ａ）に対向する被覆部材（４２）を有し、前記少なくとも１つの線状感圧部材（３１）の前記中空部（４０）内における前記幅方向の位置が前記被覆
部材（４２）によって規定されている、挟み込み検知スイッチ（２）。 [1] A pressure-sensitive structure (3) having at least one linear pressure-sensitive member (31) in which a plurality of conductor wires (312) are arranged inside a tubular elastic body so as to be separated from each other, and a moving body. A tubular cover member (4) attached to an end portion on the front side in the moving direction of the (slide door 11) and having a hollow portion (40) for accommodating the pressure-sensitive structure (3), The pressure-sensitive structure (3) covers the at least one linear pressure-sensitive member (31) and is a width direction orthogonal to the moving direction of the moving body (11) and the extending direction of the cover member (4). Both ends (321, 321) of the hollow part (32) have a covering member (42) facing the inner surface (42a) of the hollow part (40), and the hollow part (40) of the at least one linear pressure-sensitive member (31). ) A pinch detection switch (2) whose position in the width direction is defined by the covering member (42).

［２］前記少なくとも１つの線状感圧部材（３１）が前記感圧構造体（３１）の前記幅方向の中央部（３ａ）に配置され、前記カバー部材（４）は、前記感圧構造体（３）の前記中央部（３ａ）と前記移動体（１１）の移動方向に向かい合う突部（４３／４４）を有する、上記［１］に記載の挟み込み検知スイッチ（２）。 [2] The at least one linear pressure-sensitive member (31) is arranged in the central portion (3a) in the width direction of the pressure-sensitive structure (31), and the cover member (4) is the pressure-sensitive structure. The trapping detection switch (2) according to the above [1], having a protrusion (43/44) facing the moving direction of the moving body (11) and the central portion (3a) of the body (3).

［３］前記感圧構造体（３）は、３つの前記線状感圧部材（３１）を含み、前記３つの線状感圧部材（３１）のうち、１つの線状感圧部材（３１Ａ）が前記中央部（３ａ）に、他の２つの線状感圧部材（３１）が前記中央部（３ａ）の前記幅方向両側に、それぞれ配置されている、上記［２］に記載の挟み込み検知スイッチ（２）。 [3] The pressure-sensitive structure (3) includes three linear pressure-sensitive members (31), and one linear pressure-sensitive member (31A) among the three linear pressure-sensitive members (31). ) Is arranged in the central portion (3a), and two other linear pressure-sensitive members (31) are arranged on both sides in the width direction of the central portion (3a), respectively. Detection switch (2).

［４］前記カバー部材（４）は、前記移動体（１１）に固定されたベース部（４１）と、前記ベース部（４１）よりも前記移動体（１１）の移動方向前方側に設けられ、前記ベース部（４１）との間に前記中空部（４０）を形成するカバー部材（４）とを有し、前記突部（４３）は、前記ベース部（４１）から前記カバー部（４２）に向かって突出して設けられ、前記挟み込みの検出対象が前記移動体（１１）の移動方向に沿って前記カバー部材（４）に接触したとき、前記中央部（３ａ）に配置された前記線状感圧部材（３１）が前記突部（４３）の頂面（４３ａ）と前記カバー部（４２）の内面（４２ａ）との間に挟まれ、前記挟み込みの検出対象が前記移動体（１１）の移動方向に対して傾斜した方向に沿って前記カバー部材（４）に接触したとき、前記中央部（３ａ）の前記幅方向両側に配置された前記２つの線状感圧部材（３１Ｂ，３１Ｃ）のうち何れかの線状感圧部材（３１Ｂ，３１Ｃ）が前記突部（４３）の側面（４３ａ）と前記カバー部（４２）の内面（４２ａ）との間に挟まれる、上記［３］に記載の挟み込み検知スイッチ（２）。 [4] The cover member (4) is provided on the base part (41) fixed to the moving body (11) and on the front side in the moving direction of the moving body (11) with respect to the base part (41). , A cover member (4) forming the hollow portion (40) between the base portion (41) and the base portion (41), and the protrusion (43) extends from the base portion (41) to the cover portion (42). ) Is provided so as to project toward the cover member (4), and the pinch detection target contacts the cover member (4) along the moving direction of the moving body (11) and is arranged in the central portion (3a). The pressure-sensitive member (31) is sandwiched between the top surface (43a) of the protrusion (43) and the inner surface (42a) of the cover (42), and the detection target of the sandwiching is the moving body (11). ) Is in contact with the cover member (4) along a direction inclined with respect to the moving direction, the two linear pressure-sensitive members (31B, 31B, 31B, 31B) arranged on both sides in the width direction of the central portion (3a). One of the linear pressure sensitive members (31B, 31C) of 31C) is sandwiched between the side surface (43a) of the protrusion (43) and the inner surface (42a) of the cover portion (42). 3] The trapping detection switch (2) described in [3].

［５］前記感圧構造体（３）は、前記中空部（４０）内において、前記突部（４３）の前記頂面（４３ａ）及び前記側面（４３ｂ）の少なくとも一部を覆うように湾曲している、上記［４］に記載の挟み込み検知スイッチ（２）。 [5] The pressure-sensitive structure (3) is curved so as to cover at least a part of the top surface (43a) and the side surface (43b) of the protrusion (43) in the hollow portion (40). The entrapment detection switch (2) according to [4] above.

［６］前記感圧構造体（３）は、前記挟み込みが発生していない平常時において、前記被覆部材（３２）の前記両端部（３２１，３２１）が共に前記中空部（４０）の内面（４０ａ）に当接している、上記［１］乃至［５］の何れか一つに記載の挟み込み検知スイッチ
（２）。 [6] In the pressure-sensitive structure (3), the both ends (321, 321) of the covering member (32) are both the inner surface () of the hollow part (40) in a normal state where the entrapment does not occur. The entrapment detection switch (2) according to any one of [1] to [5], which is in contact with 40a).

［７］前記感圧構造体（３）は、前記少なくとも１つの線状感圧部材（３１）を前記被覆部材（３２）によってモールドしたモールド成形体である、上記［１］乃至［６］の何れか一つに記載の挟み込み検知スイッチ（２）。 [7] The pressure-sensitive structure (3) is a molded body obtained by molding the at least one linear pressure-sensitive member (31) with the covering member (32). [1] to [6] The trapping detection switch (2) according to any one of the above.

以上、本発明の実施の形態を説明したが、上記に記載した実施の形態は特許請求の範囲に係る発明を限定するものではない。また、実施の形態の中で説明した特徴の組合せの全てが発明の課題を解決するための手段に必須であるとは限らない点に留意すべきである。 Although the embodiment of the invention has been described above, the embodiment described above does not limit the invention according to the claims. It should be noted that not all combinations of the features described in the embodiments are essential to the means for solving the problems of the invention.

また、本発明は、その趣旨を逸脱しない範囲で適宜変形して実施することが可能である。例えば、上記実施の形態では、カバー部材４の中空部４０に収容される前の自然状態において、被覆部材３２が平板状である場合について説明したが、被覆部材３２を湾曲した形状にモールド成形してもよい。また、自然状態における被覆部材３２の形状は、平板状に限らず、例えば移動方向前方側あるいは移動方向後方側に凸となるＵ字状あるいはＶ字状でもよい。 Further, the present invention can be appropriately modified and implemented without departing from the spirit of the present invention. For example, in the above-described embodiment, the case where the covering member 32 is flat in the natural state before being housed in the hollow portion 40 of the cover member 4 has been described, but the covering member 32 is molded into a curved shape. May be. Further, the shape of the covering member 32 in the natural state is not limited to the flat plate shape, and may be, for example, a U-shape or a V-shape that is convex toward the front side in the moving direction or the rear side in the moving direction.

また、感圧構造体（３）に関し、幅広のテープの粘着面側に、単数、又は複数の線状感圧部材（３１）を並列させた後、別の幅広のテープで挟む構造としてよい。つまり、２つのテープの間に、単数、又は複数の線状感圧部材（３１）を配置させる感圧構造体である。この場合の感圧構造体の外面形状は、断面視は、図７のような楕円状ではなく、線状感圧部材（３１）の部分だけが凸状となり、複数の線状感圧部材（３１）を配置させる場合は、波状の外面形状を有する感圧構造体となる。 The pressure-sensitive structure (3) may have a structure in which a single or a plurality of linear pressure-sensitive members (31) are arranged in parallel on the adhesive surface side of a wide tape and then sandwiched by another wide tape. That is, it is a pressure-sensitive structure in which a single or a plurality of linear pressure-sensitive members (31) are arranged between two tapes. In this case, the outer surface shape of the pressure-sensitive structure is not elliptical as shown in FIG. 7, but only the linear pressure-sensitive member (31) has a convex shape, and a plurality of linear pressure-sensitive members ( 31), the pressure-sensitive structure has a wavy outer surface shape.

このように構成することにより、感圧構造体としては、断面視で、線状感圧部材が配置される肉厚部分と、線状感圧部材が配置されない非肉厚部分とができるが、この非肉厚部分、即ち、感圧構造体の厚さが薄い部分が変形させ易い部分となる。つまり、この変形のし易さは、挟み込み検知スイッチの製造のし易さに寄与する。 With such a configuration, the pressure-sensitive structure can have a thick portion where the linear pressure-sensitive member is arranged and a non-thick portion where the linear pressure-sensitive member is not arranged in a cross-sectional view. The non-thick portion, that is, the thin portion of the pressure-sensitive structure becomes a portion that is easily deformed. That is, this ease of deformation contributes to the ease of manufacturing the pinch detection switch.

また、複数の線状感圧部材（３１）を有する感圧構造体（３）に関し、線状感圧部材間の被覆部材（３２）に、線状感圧部材に沿う格好で、切れ込み（溝）を入れても良い。このように構成することにより、感圧構造体としては、断面視で、線状感圧部材が配置される肉厚部分と、線状感圧部材間の非肉厚部分とができるが、この非肉厚部分、即ち、感圧構造体の厚さが薄い部分が変形させ易い部分となる。つまり、この変形のし易さは、挟み込み検知スイッチの製造のし易さに寄与する。 Further, regarding the pressure-sensitive structure (3) having a plurality of linear pressure-sensitive members (31 ), the covering member (32) between the linear pressure-sensitive members is cut along with the linear pressure-sensitive members in a groove (groove). ) May be included. With this structure, the pressure-sensitive structure has a thick portion where the linear pressure-sensitive member is arranged and a non-thickness portion between the linear pressure-sensitive members in the cross-sectional view. The non-thick portion, that is, the thin portion of the pressure-sensitive structure becomes a portion that is easily deformed. That is, this ease of deformation contributes to the ease of manufacturing the pinch detection switch.

１１…スライドドア（移動体） ２…挟み込み検知スイッチ
３…感圧構造体 ３１…線状感圧部材
３１１…チューブ（管状の弾性体） ３１２…導体線
３２…被覆部材 ３２１…端部
４…カバー部材 ４０…中空部
４０ａ…内面 ４１…ベース部
４２…カバー部 ４２ａ…内面
４３，４４…突部 ４３ａ…頂面
４３ｂ…側面 11... Sliding door (moving body) 2... Entrapment detection switch 3... Pressure-sensitive structure 31... Linear pressure-sensitive member 311... Tube (tubular elastic body) 312... Conductor wire 32... Covering member 321... End 4... Cover Member 40... Hollow part 40a... Inner surface 41... Base part 42... Cover part 42a... Inner surface 43,44... Projection part 43a... Top surface 43b... Side surface

Claims (7)

複数の導体線を管状の弾性体の内側に互いに離間して螺旋状に配置してなる少なくとも１つの線状感圧部材を有する帯状の感圧構造体と、
移動体の移動方向前方側の端部に取り付けられ、前記感圧構造体を収容する中空部が形成された筒状のカバー部材と、を備え、
前記感圧構造体は、前記少なくとも１つの線状感圧部材を覆い、かつ前記移動体の移動方向及び前記カバー部材の延伸方向に直交する幅方向の両端部が前記中空部の内面に対向する被覆部材を有し、
前記少なくとも１つの線状感圧部材の前記中空部内における前記幅方向の位置が前記被覆部材によって規定されている、
挟み込み検知スイッチ。 A strip-shaped pressure-sensitive structure having at least one linear pressure-sensitive member in which a plurality of conductor wires are spirally arranged inside a tubular elastic body so as to be spaced from each other.
A tubular cover member, which is attached to an end portion on the front side in the moving direction of the moving body, and in which a hollow portion for housing the pressure-sensitive structure is formed,
The pressure-sensitive structure covers the at least one linear pressure-sensitive member, and both ends in the width direction orthogonal to the moving direction of the moving body and the extending direction of the cover member face the inner surface of the hollow portion. Has a covering member,
A position in the width direction in the hollow portion of the at least one linear pressure-sensitive member is defined by the covering member,
Entrapment detection switch. 前記少なくとも１つの線状感圧部材が前記感圧構造体の前記幅方向の中央部に配置され、
前記カバー部材は、前記感圧構造体の前記中央部と前記移動体の移動方向に向かい合う突部を有する、
請求項１に記載の挟み込み検知スイッチ。 The at least one linear pressure-sensitive member is arranged in the central portion in the width direction of the pressure-sensitive structure,
The cover member has a protrusion facing the center of the pressure-sensitive structure and the moving direction of the moving body.
The trapping detection switch according to claim 1. 前記感圧構造体は、３つの前記線状感圧部材を含み、前記３つの線状感圧部材のうち、１つの線状感圧部材が前記中央部に、他の２つの線状感圧部材が前記中央部の前記幅方向両側に、それぞれ配置されている、
請求項２に記載の挟み込み検知スイッチ。 The pressure-sensitive structure includes three linear pressure-sensitive members, and one of the three linear pressure-sensitive members has one linear pressure-sensitive member in the central portion and the other two linear pressure-sensitive members. Members are respectively arranged on both sides in the width direction of the central portion,
The trapping detection switch according to claim 2. 前記カバー部材は、前記移動体に固定されたベース部と、前記ベース部よりも前記移動体の移動方向前方側に設けられ、前記ベース部との間に前記中空部を形成するカバー部とを有し、
前記突部は、前記ベース部から前記カバー部に向かって突出して設けられ、
前記挟み込みの検出対象が前記移動体の移動方向に沿って前記カバー部材に接触したとき、前記中央部に配置された前記線状感圧部材が前記突部の頂面と前記カバー部の内面との間に挟まれ、
前記挟み込みの検出対象が前記移動体の移動方向に対して傾斜した方向に沿って前記カバー部材に接触したとき、前記中央部の前記幅方向両側に配置された前記２つの線状感圧部材のうち何れかの線状感圧部材が前記突部の側面と前記カバー部の内面との間に挟まれる、
請求項３に記載の挟み込み検知スイッチ。 The cover member includes a base portion fixed to the moving body, and a cover portion provided on the front side in the moving direction of the moving body with respect to the base portion and forming the hollow portion between the base portion and the base portion. Have,
The protrusion is provided so as to protrude from the base portion toward the cover portion,
When the detection target of the entrapment contacts the cover member along the moving direction of the moving body, the linear pressure-sensitive member arranged in the central portion has a top surface of the protrusion and an inner surface of the cover portion. Sandwiched between
When the detection target of the pinch contacts the cover member along a direction inclined with respect to the moving direction of the moving body, the two linear pressure-sensitive members arranged on both sides in the width direction of the central portion Any one of the linear pressure-sensitive members is sandwiched between the side surface of the protrusion and the inner surface of the cover portion,
The trapping detection switch according to claim 3. 前記感圧構造体は、前記中空部内において、前記突部の前記頂面及び前記側面の少なくとも一部を覆うように湾曲している、
請求項４に記載の挟み込み検知スイッチ。 The pressure-sensitive structure, in the hollow portion, is curved so as to cover at least a part of the top surface and the side surface of the protrusion,
The trapping detection switch according to claim 4. 前記感圧構造体は、前記挟み込みが発生していない平常時において、前記被覆部材の前記両端部が共に前記中空部の内面に当接している、
請求項１乃至５の何れか一項に記載の挟み込み検知スイッチ。 The pressure-sensitive structure, in a normal state in which the entrapment has not occurred, both ends of the covering member are both in contact with the inner surface of the hollow portion,
The entrapment detection switch according to claim 1. 前記感圧構造体は、前記少なくとも１つの線状感圧部材を前記被覆部材によってモールドしたモールド成形体である、
請求項１乃至６の何れか一項に記載の挟み込み検知スイッチ。 The pressure-sensitive structure is a molded body obtained by molding the at least one linear pressure-sensitive member with the coating member.
The pinch detection switch according to any one of claims 1 to 6.

Images