JP4128976B2 - Terminal structure of flat cable for rotary connector - Google Patents

Terminal structure of flat cable for rotary connector Download PDF

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JP4128976B2
JP4128976B2 JP2004126535A JP2004126535A JP4128976B2 JP 4128976 B2 JP4128976 B2 JP 4128976B2 JP 2004126535 A JP2004126535 A JP 2004126535A JP 2004126535 A JP2004126535 A JP 2004126535A JP 4128976 B2 JP4128976 B2 JP 4128976B2
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terminal
flat cable
connection
piercing
terminal structure
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JP2005310570A (en
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政利 牛山
憲嗣 榎本
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THE FURUKAW ELECTRIC CO., LTD.
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Description

本発明は、車両等のステアリング機構の回転部と固定部との間で信号(光信号を含む)や電力等を伝送するのに使用する回転コネクタ(ステアリングロールコネクタ(SRC))に収容される可撓性のフラットケーブル(FFC)(FPCその他の回路形成体を含む。以下同じ)の端末構造に関するものである。   The present invention is accommodated in a rotating connector (steering roll connector (SRC)) used for transmitting signals (including optical signals), electric power, and the like between a rotating portion and a fixed portion of a steering mechanism such as a vehicle. The present invention relates to a terminal structure of a flexible flat cable (FFC) (including FPC and other circuit forming bodies; the same applies hereinafter).

車両等のステアリング機構の回転部と固定部との間で信号や電力等を伝送するのに使用する回転コネクタは、例えば、図8に示すように、ステータとして作用する第1のハウジング1及びロータとして作用する第2のハウジング2が同心状に、且つ、相対的に回転自在に組み合わされ、両ハウジング1、2がなすリング状の室3内に、平行に配置された複数の帯状の導体5を両側から絶縁フイルムでラミネートしてなる可撓性のフラットケーブル(FFC)4が渦巻状に、あるいは、中間部に略U字状の反転部を形成することにより巻回されて収容され、フラットケーブル4の外端末が第1のハウジング1側に固定され、内端末が第2のハウジング2側に固定され、ロータとして作用する第2のハウジング2が車両等のステアリング機構の回転部で正逆方向に回転駆動される構成になっている。   For example, as shown in FIG. 8, a rotary connector used to transmit a signal, electric power, or the like between a rotating part and a fixed part of a steering mechanism of a vehicle or the like includes a first housing 1 and a rotor that act as a stator. A plurality of strip-shaped conductors 5 arranged in parallel in a ring-shaped chamber 3 formed by the two housings 1 and 2 are concentrically and relatively rotatably combined. A flexible flat cable (FFC) 4 that is laminated from both sides with an insulating film is spirally wound or accommodated by forming a substantially U-shaped inversion part in the middle part, and is flat. The outer terminal of the cable 4 is fixed to the first housing 1 side, the inner terminal is fixed to the second housing 2 side, and the second housing 2 acting as a rotor is rotated by a steering mechanism such as a vehicle. Has become rotated driven configured forward and reverse direction in parts.

そして、フラットケーブル4の内端末が第2のハウジング2側に固定される端末構造は、図9(A)乃至(C)に示すように、内端末における各導体5に導通接続されるケーブル接続部が直線状バスバーからなる端子本体7の基端側に形成され、端子本体7の先端側にリード線10の導体11と導通接続されるリード線端子部9が形成された複数(図示例は6個)の接続端子6と、各接続端子6の端子本体7に装着されて、各接続端子6をフラットケーブル4の導体5のピッチに合わせて並列状態で相互に連結する矩形板状の絶縁支持体12と、複数の接続端子6をフラットケーブル4及びリード線10にまたがって被うように樹脂モールド成形されて接続端子6を保護する弧形板状の保護体13とを備え、ケーブル接続部が端子本体7とフラットケーブル4の導体5とを重合して超音波溶接する溶接接続部8で構成され、リード線端子部9がリード線10の導体11と重合して超音波溶接される構成になっている。   The terminal structure in which the inner terminal of the flat cable 4 is fixed to the second housing 2 side is a cable connection that is conductively connected to each conductor 5 in the inner terminal, as shown in FIGS. 9 (A) to (C). A plurality of lead wire terminal portions 9 that are formed on the base end side of the terminal body 7 made of a straight bus bar and are electrically connected to the conductor 11 of the lead wire 10 are formed on the tip end side of the terminal body 7 (in the illustrated example, 6) connecting terminals 6 and a rectangular plate-like insulation that is attached to the terminal body 7 of each connecting terminal 6 and connects the connecting terminals 6 to each other in parallel in accordance with the pitch of the conductor 5 of the flat cable 4 A support body 12 and an arc-shaped plate-like protection body 13 that protects the connection terminal 6 by being resin-molded so as to cover the plurality of connection terminals 6 across the flat cable 4 and the lead wire 10, and cable connection Is the terminal body 7 and the By polymerizing a conductor 5 of Ttokeburu 4 is composed of a welded connection 8 for ultrasonic welding has a structure in which the lead wire terminal portions 9 are polymerized to ultrasonic welding the conductor 11 of the lead 10.

また、フラットケーブルの外端末が第1のハウジング1側に固定される端末構造は、図示省略するが、該端末における各導体5に導通接続されるケーブル接続部がL字状バスバーからなる端子本体の基端側に形成された複数の接続端子を備え、該ケーブル接続部が同様に端子本体とフラットケーブル4の導体5とを重合して超音波溶接する溶接接続部で構成される(特許文献1参照)。   The terminal structure in which the outer terminal of the flat cable is fixed to the first housing 1 side is not shown in the figure, but the terminal body in which the cable connecting portion that is conductively connected to each conductor 5 in the terminal is an L-shaped bus bar. A plurality of connection terminals formed on the base end side of the cable, and the cable connection portion is similarly formed of a weld connection portion that superimposes the terminal body and the conductor 5 of the flat cable 4 and ultrasonically welds them (Patent Document) 1).

実開昭64−21988号全文明細書(第1頁の実用新案登録請求の範囲、第5頁第11行目乃至第7頁第2行目、第1図(A)乃至(C)及び第2図)Japanese Utility Model Publication No. 64-2-21988 (claim for utility model registration on page 1, page 11, line 11 to page 7, line 2, FIG. 1 (A) to (C) and (Fig. 2)

しかしながら、従来の回転コネクタ用フラットケーブルの端末構造によると、フラットケーブル4の端末における各導体5と接続端子6とを導通接続するケーブル接続部が超音波による溶接接続部8で構成されるため、端末構造の形成に工数がかかりコストが高くなるという問題があった。   However, according to the terminal structure of the flat cable for a conventional rotary connector, since the cable connection portion that electrically connects each conductor 5 and the connection terminal 6 at the end of the flat cable 4 is constituted by the ultrasonic weld connection portion 8, There has been a problem that the formation of the terminal structure takes man-hours and the cost is increased.

本発明の目的は、上記の課題を解決し、回転コネクタ用フラットケーブルの端末構造の形成に工数がかからず、コストを低減させることができる回転コネクタ用フラットケーブルの端末構造を提供することにある。   An object of the present invention is to provide a terminal structure of a flat cable for a rotary connector that solves the above-described problems and does not require man-hours for forming the terminal structure of the flat cable for a rotary connector and can reduce costs. is there.

上記の目的を達成するために、本発明の請求項1に記載された回転コネクタ用フラットケーブルの端末構造は、第1のハウジング及び第2のハウジングが同心状に、且つ、相対的に回転自在に組み合わされ、両ハウジングがなすリング状の室内に複数の導体を有するフラットケーブルが巻回されて収容される回転コネクタにあって、前記フラットケーブルの端末における各導体に導通接続されるケーブル接続部が端子本体の基端側に形成され、端子本体の先端側に端子部が形成された複数の接続端子と、その接続端子を保護する保護体とを備えた回転コネクタ用フラットケーブルの端末構造において、前記ケーブル接続部が前記接続端子の基端側に突設された複数のピアス片を導体の厚さが0.03〜0.05mmであるフラットケーブルとこれに重合した補強スペーサに突き刺してその導体に導通接続させて構成されるピアッシング接続部であり、前記保護体が複数の接続端子を収容するケースと、これに装着されるカバーとからなり、フラットケーブルの端末におけるピアッシング接続部が形成される部位の後方に、フラットケーブルの幅方向に沿って下方へ屈曲する係止段部が設けられ、カバーの後部にその幅方向に沿って下方へ突出する係止鍔部が設けられ、ケースにカバーが装着されたとき、フラットケーブルの係止段部にカバーの係止鍔部が係合するように構成されることを特徴とするものである。 In order to achieve the above object, a flat cable terminal structure for a rotary connector according to claim 1 of the present invention is such that the first housing and the second housing are concentric and relatively rotatable. A rotary connector in which a flat cable having a plurality of conductors is wound and accommodated in a ring-shaped chamber formed by both housings, and a cable connection portion that is conductively connected to each conductor at the end of the flat cable In the terminal structure of a flat cable for a rotary connector, comprising a plurality of connection terminals having a terminal portion formed on the distal end side of the terminal body, and a protector that protects the connection terminals. the flat cable thickness of the conductor a plurality of piercing piece the cable connecting portion protruding from the base end side of the connection terminal is 0.03~0.05mm Its Ri piercing connecting portion der configured conductor is conductively connected to pierce the reinforcing spacer polymerized Les made from the protective body is a case for accommodating a plurality of connection terminals, and a cover to be attached thereto, At the rear of the portion where the piercing connection portion is formed at the end of the flat cable, a locking step portion that is bent downward along the width direction of the flat cable is provided, and the rear portion of the cover protrudes downward along the width direction. An engaging hook portion is provided, and when the cover is attached to the case, the engaging hook portion of the cover is engaged with the engaging step portion of the flat cable .

本発明の請求項2に記載された回転コネクタ用フラットケーブルの端末構造は、請求項1記載のものにおいて、少なくとも一つの前記接続端子の端子本体に、その接続端子のピアッシング接続部の軸線位置と端子部の軸線位置を接続端子が並列して配設される方向に変位させる曲がり部が設けられることを特徴とするものである。 The terminal structure of the flat cable for a rotary connector according to claim 2 of the present invention is the terminal structure of claim 1 , wherein the terminal body of at least one of the connection terminals is connected to the axis position of the piercing connection portion of the connection terminal. A bent portion is provided that displaces the axial position of the terminal portion in a direction in which the connection terminals are arranged in parallel.

本発明の請求項1に記載された端末構造によると、前記フラットケーブルの端末における厚さが0.03〜0.05mmである各導体に導通接続される接続端子のケーブル接続部がピアッシング接続部で構成されるので、端末構造を形成する場合には、接続端子のピアス片をフラットケーブルに突き刺して成形加工を行うことができる簡易設備があればよく、高価な超音波溶接機を必要としなくなる。また、端末構造の形成が容易で工数及び形成費用がかからなくなる。従って、回転コネクタのコストを低減させることができる。 According to the terminal structure described in claim 1 of the present invention, the cable connection portion of the connection terminal that is conductively connected to each conductor having a thickness of 0.03 to 0.05 mm at the end of the flat cable is a piercing connection portion. Therefore, in the case of forming a terminal structure, it is only necessary to have a simple facility that can pierce the piercing piece of the connection terminal into the flat cable and perform molding processing, and an expensive ultrasonic welding machine is not required. . Further, the terminal structure can be easily formed, and man-hours and forming costs are not required. Therefore, the cost of the rotary connector can be reduced .

また、フラットケーブルに引張り力(引抜き力)が作用しても、フラットケーブルの係止段部がカバーの係止鍔部に係合してフラットケーブルの移動が拘束され、その係止段部で引張り力が受け止められるので、ピアッシング接続部には引張り力が作用せず、端末構造の電気的接続状態を更に良好に保ち、機械的強度の低下を防止し、回転コネクタの寿命を延ばすことができる。また、引張り力によるフラットケーブルの移動を防止する止めキー等のストッパ部材を設ける必要がないので、端末構造の構造を簡単、小型化することができる。 Even if a pulling force (pulling force) acts on the flat cable, the locking step of the flat cable engages with the locking hook of the cover and the movement of the flat cable is restricted. Since the tensile force is received, the tensile force does not act on the piercing connection part, the electrical connection state of the terminal structure is kept better, the mechanical strength is prevented from being lowered, and the life of the rotary connector can be extended. . In addition, since it is not necessary to provide a stopper member such as a stop key for preventing the flat cable from moving due to a tensile force, the structure of the terminal structure can be simplified and downsized .

さらに、ピアッシング接続部が補強スペーサで補強されるので、導体の厚さが0.03〜0.05mmと比較的うすい場合でも、ピアッシング接続部の接続状態を安定させることができる。 Furthermore, since the piercing connection portion is reinforced by the reinforcing spacer, the connection state of the piercing connection portion can be stabilized even when the conductor thickness is relatively thin, 0.03 to 0.05 mm .

本発明の請求項に記載された端末構造によると、フラットケーブルの導体ピッチと相手方コネクタの雌雄端子、リード線等と導通接続される接続端子の端子部の導体ピッチとが異なる場合でも、新たに専用のピッチ変換部材を設ける必要がなく、端末構造が簡単で小型になり、端末構造を容易、且つ、安価に形成することができるほか、このようなピッチ変換に迅速に対応することが可能になり、接続の作業性を向上させることができる。 According to the terminal structure described in claim 2 of the present invention, even when the conductor pitch of the flat cable is different from the conductor pitch of the terminal portion of the connection terminal that is conductively connected to the male and female terminals of the mating connector, the lead wire, etc. It is not necessary to provide a dedicated pitch conversion member for the terminal, the terminal structure is simple and compact, the terminal structure can be formed easily and inexpensively, and it is possible to respond quickly to such pitch conversion. Thus, the connection workability can be improved.

次に、本発明を実施するための最良の形態を図面により詳細に説明する。図1は本発明に係る回転コネクタ用フラットケーブルの端末構造をその内端末に適用した場合の実施形態を示すもので、(A)は斜視図、(B)は(A)のX−X線矢視断面図、図2は図1の端末構造の分解斜視図である。なお、従来と同じ構成の部品には同一符号を付し、重複するところは説明を簡略化又は省略する。また、本発明の端末構造はフラットケーブルの外端末又は内外端末に適用できるものである。   Next, the best mode for carrying out the present invention will be described in detail with reference to the drawings. FIG. 1 shows an embodiment in which the terminal structure of a flat cable for a rotary connector according to the present invention is applied to an inner terminal, wherein (A) is a perspective view and (B) is an XX line of (A). FIG. 2 is an exploded perspective view of the terminal structure of FIG. In addition, the same code | symbol is attached | subjected to the components of the same structure as the past, and description is simplified or abbreviate | omitted where it overlaps. The terminal structure of the present invention can be applied to an external terminal or an external terminal of a flat cable.

本実施形態の端末構造は、図1、2に示すように、フラットケーブル4の内端末における各導体5に導通接続され、横方向に並列して配設される複数(図示例は5個)の接続端子20とこれら接続端子20を保護する保護体22とを備える。各接続端子20は、銅、銅合金等で出来た良導電性条材を角管状に成形加工することにより形成された端子本体24と、その基端側に形成されたケーブル接続部であるピアッシング接続部26と、端子本体24の先端側に先細り状に形成され、相手側コネクタ(図示せず)の雌状端子と嵌合接続される雄状端子部28とからなる。ピアッシング接続部26は、図2に示すように、端子本体24の基端側に形成された上方に開口する断面コ型の接続条片部29の幅方向の両側にフラットケーブル4(導体5)の長手方向に沿って、例えば、千鳥状に上方へ突設された複数の先端が尖ったピアス片30を、プレス機(図示せず)でフラットケーブル4とこれに重合した補強スペーサ52に突き刺して、その導体5に導通接続させ、フラットケーブル4の導体5及び補強スペーサ52から上方へ突き抜けた先端部分を逆U字状に折り曲げて補強スペーサ52の外面(上面)に加締めることにより構成される。補強スペーサ52は電気絶縁性の矩形板状体やフラットケーブル4の短片等を用いることができる。   As shown in FIGS. 1 and 2, the terminal structure of the present embodiment is a plurality of conductors (5 in the illustrated example) that are conductively connected to the conductors 5 in the inner terminal of the flat cable 4 and arranged in parallel in the horizontal direction. Connecting terminals 20 and a protector 22 that protects these connecting terminals 20. Each connection terminal 20 includes a terminal body 24 formed by forming a highly conductive strip made of copper, copper alloy or the like into a square tube, and a piercing that is a cable connection portion formed on the base end side thereof. The connecting portion 26 includes a male terminal portion 28 that is formed in a tapered shape at the distal end side of the terminal body 24 and is fitted and connected to a female terminal of a mating connector (not shown). As shown in FIG. 2, the piercing connection portion 26 is formed on the flat cable 4 (conductor 5) on both sides in the width direction of the U-shaped connection strip portion 29 that opens upward and is formed on the base end side of the terminal body 24. For example, a plurality of pointed piercing pieces 30 protruding upward in a zigzag manner are pierced into the flat cable 4 and the reinforcing spacer 52 superposed on the flat cable 4 by a press machine (not shown). Then, the conductor 5 is electrically connected, and the tip portion protruding upward from the conductor 5 and the reinforcing spacer 52 of the flat cable 4 is bent into an inverted U shape and crimped to the outer surface (upper surface) of the reinforcing spacer 52. The The reinforcing spacer 52 may be an electrically insulating rectangular plate or a short piece of the flat cable 4.

本実施形態では、フラットケーブル4の内端末におけるピアッシング接続部26が形成される部位の後方に、フラットケーブル4の幅方向に沿って下方へクランク状(互いに逆方向に90度折り曲げた形状)に屈曲する係止段部32が設けられる。   In the present embodiment, in the rear side of the portion where the piercing connection portion 26 in the inner terminal of the flat cable 4 is formed, it is downwardly cranked along the width direction of the flat cable 4 (a shape bent 90 degrees in the opposite direction). A bending step 32 that is bent is provided.

保護体22は、複数の接続端子20を収容するケース(ハウジング)34と、これに装着されるカバー36とからなり、プラスチックを射出成形加工等して得られる。ケース34は矩形板状の端子保持部38とその前部に連接された直方ブロック40とで形成され、端子保持部38の上面には、複数の端子仕切り壁42が接続端子20の長手方向に延出するように幅方向に接続端子20の幅に合致する間隔をおいて並列して配設され、端子仕切り壁42で仕切られた複数の端子収容溝43にフラットケーブル4の各導体5に導通接続された複数の接続端子20が収容される。また直方ブロック40には、接続端子20の雄状端子部28を挿入させる端子挿入穴44がフラットケーブル4の導体5のピッチ間隔をおいて幅方向に並列して穿設される。この端子挿入穴44は雄状端子部28を円滑に挿入するために上下方向に延出した長穴状に形成される。   The protector 22 includes a case (housing) 34 that accommodates the plurality of connection terminals 20 and a cover 36 that is attached to the case. The protector 22 is obtained by injection molding or the like of plastic. The case 34 is formed by a rectangular plate-shaped terminal holding portion 38 and a rectangular block 40 connected to the front portion thereof, and a plurality of terminal partition walls 42 are formed on the upper surface of the terminal holding portion 38 in the longitudinal direction of the connection terminal 20. Each conductor 5 of the flat cable 4 is provided in a plurality of terminal receiving grooves 43 that are arranged in parallel in the width direction so as to extend with an interval matching the width of the connection terminal 20 and partitioned by the terminal partition wall 42. A plurality of connection terminals 20 that are conductively connected are accommodated. Further, terminal insertion holes 44 for inserting the male terminal portions 28 of the connection terminals 20 are formed in the rectangular block 40 in parallel in the width direction with a pitch interval of the conductor 5 of the flat cable 4. The terminal insertion hole 44 is formed in a long hole shape extending in the vertical direction in order to smoothly insert the male terminal portion 28.

カバー36は、ケース34の端子保持部38の上部を被うことができる大きさを有する矩形板状体で形成され、その両側部には下方に突出して端子保持部38に係着される係止タブ46が設けられる。また、その後部には、カバー36の幅方向に沿って下方へ突出する係止鍔部48が設けられ、ケース34にカバー36が装着されたとき、フラットケーブル4の係止段部32にカバー36の係止鍔部48が係合するように構成される。更に、カバー36の下面(裏面)には、ケース34の端子保持部38の端子仕切り壁42に対向するように複数の突条50が接続端子20の長手方向に延出するように幅方向に並列して配設され、接続端子20の両側部を保持する。本実施形態の回転コネクタ用フラットケーブルの端末構造は以上のような構成になっている。   The cover 36 is formed of a rectangular plate having a size capable of covering the upper portion of the terminal holding portion 38 of the case 34, and is engaged with the terminal holding portion 38 projecting downward on both sides thereof. A stop tab 46 is provided. Further, at the rear portion thereof, a locking collar portion 48 that protrudes downward along the width direction of the cover 36 is provided. When the cover 36 is attached to the case 34, the locking step portion 32 of the flat cable 4 is covered with the locking step portion 32. It is comprised so that the 36 latching hook parts 48 may engage. Further, on the lower surface (back surface) of the cover 36, the plurality of protrusions 50 extend in the width direction so as to extend in the longitudinal direction of the connection terminals 20 so as to face the terminal partition wall 42 of the terminal holding portion 38 of the case 34. It is arranged in parallel and holds both sides of the connection terminal 20. The terminal structure of the flat cable for a rotary connector according to this embodiment is configured as described above.

本実施形態の端末構造を組み立てる場合には、フラットケーブル4の内端末に、接続端子20の基端側に突設された複数のピアス片30をフラットケーブル4とこれに重合した補強スペーサ52に突き刺して、フラットケーブル4の導体5に導通接続させるピアッシング接続部26を形成する。次に、接続端子20をケース34内における端子保持部38の端子収容溝43に収容すると共に、各接続端子20の雄状端子部28をケース34の端子挿入穴44に挿入してケース34の直方ブロック40から突出させる。次に、ケース34の端子保持部38にカバー36を、その係止鍔部48がフラットケーブル4の係止段部32に係合するようにして被せ、係止タブ46を係着することにより装着し、端末構造の組み立てを終了する。なお、保護体22はケース34とカバー36の2分割構造ではなく、プラスチックをインサートモールド成形してなる一体型のモールド成形体で形成するようにしてもよい。   When assembling the terminal structure of the present embodiment, a plurality of pierce pieces 30 protruding from the proximal end side of the connection terminal 20 are formed on the inner end of the flat cable 4 and the reinforcing spacer 52 superposed on the flat cable 4. A piercing connection portion 26 is formed which is pierced and is electrically connected to the conductor 5 of the flat cable 4. Next, the connection terminal 20 is accommodated in the terminal accommodation groove 43 of the terminal holding portion 38 in the case 34, and the male terminal portion 28 of each connection terminal 20 is inserted into the terminal insertion hole 44 of the case 34 to Project from the rectangular block 40. Next, the cover 36 is put on the terminal holding portion 38 of the case 34 so that the locking collar portion 48 engages with the locking step portion 32 of the flat cable 4, and the locking tab 46 is engaged. Attach and finish assembling the terminal structure. The protective body 22 may be formed by an integral molded body formed by insert molding of plastic instead of the two-part structure of the case 34 and the cover 36.

本発明の端末構造は、フラットケーブル4の端末における各導体5に導通接続される接続端子20のケーブル接続部が前記接続端子の基端側に突設された複数のピアス片をフラットケーブルに突き刺してその導体に導通接続させて構成されるピアッシング接続部26で構成されるので、端末構造を形成する場合には、接続端子20のピアス片30をフラットケーブル4に突き刺して成形加工を行うことができる簡易設備があればよく、高価な超音波溶接機を必要としなくなる。また、端末構造の形成が容易で工数及び形成費用がかからなくなる。従って、回転コネクタのコストを低減させることができる。   In the terminal structure of the present invention, a plurality of pierce pieces in which the cable connection portions of the connection terminals 20 that are conductively connected to the respective conductors 5 at the ends of the flat cable 4 protrude on the base end side of the connection terminals are pierced into the flat cable. In the case of forming a terminal structure, the piercing piece 30 of the connection terminal 20 can be pierced into the flat cable 4 and molded. Simple equipment that can be used is sufficient, and an expensive ultrasonic welding machine is not required. Further, the terminal structure can be easily formed, and man-hours and forming costs are not required. Therefore, the cost of the rotary connector can be reduced.

本実施形態の端末構造のように、保護体22が複数の接続端子20を収容するケース34と、これに装着されるカバー36とからなり、フラットケーブル4の端末におけるピアッシング接続部26が形成される部位の後方に、フラットケーブル4の幅方向に沿って下方へ屈曲する係止段部32が設けられ、カバー36の後部にその幅方向に沿って下方へ突出する係止鍔部48が設けられ、ケース34にカバー36が装着されたとき、フラットケーブル4の係止段部32にカバー36の係止鍔部48が係合するように構成されると、フラットケーブル4に引張り力(引抜き力)が作用しても、フラットケーブル4の係止段部32がカバー36の係止鍔部48に係合してフラットケーブル4の移動が拘束され、その係止段部32で引張り力が受け止められる。その結果、ピアッシング接続部26には引張り力が作用せず、端末構造の電気的接続状態を更に良好に保ち、機械的強度の低下を防止し、回転コネクタの寿命を延ばすことができるほか、引張り力によるフラットケーブル4の移動を防止する止めキー等のストッパ部材を設ける必要がなく、端末構造の構造を簡単、小型化することができる。   Like the terminal structure of the present embodiment, the protector 22 includes a case 34 that houses the plurality of connection terminals 20 and a cover 36 that is attached to the case 34, and the piercing connection portion 26 in the terminal of the flat cable 4 is formed. A locking step portion 32 that is bent downward along the width direction of the flat cable 4 is provided at the rear side of the cover portion, and a locking collar portion 48 that protrudes downward along the width direction is provided at the rear portion of the cover 36. When the cover 36 is attached to the case 34, if the locking collar portion 48 of the cover 36 is engaged with the locking step portion 32 of the flat cable 4, a tensile force (withdrawal) is applied to the flat cable 4. Force) is engaged, the locking step 32 of the flat cable 4 engages with the locking collar 48 of the cover 36, and the movement of the flat cable 4 is restrained. received It is fit. As a result, no tensile force acts on the piercing connection portion 26, the electrical connection state of the terminal structure can be kept better, the mechanical strength can be prevented from being lowered, and the life of the rotary connector can be extended. It is not necessary to provide a stopper member such as a stop key for preventing the flat cable 4 from being moved by force, and the structure of the terminal structure can be simplified and downsized.

また、フラットケーブル4の導体5が比較的厚く剛性を有する場合には、接続端子20のピアス片30をフラットケーブル4だけに突き刺して導体5と導通接続させることによりピアッシング接続部26を形成しても、その接続状態が安定する。ところが、フラットケーブル4の導体5の厚さが、例えば、0.03〜0.05mm程度と比較的薄い場合、ピアッシング接続部26の接続状態が安定しないことがある。このような場合には、前記したように、接続すべきフラットケーブル4の端末の上面に補強スペーサ52を重合して、複数のピアス片30をフラットケーブル4と補強スペーサ52に突き刺してフラットケーブル4の導体5に導通接続させることによりピアッシング接続部26を形成する。そうすると、ピアッシング接続部26が補強スペーサ52で補強されるので、ピアス片30と導体5がしっかり接続されて接触抵抗が小さく、且つ、回転コネクタに組み込んで使用中にその接触抵抗が増大するようなこともなく安定し、良好な導通状態が確保され、該接続部26の接続状態を安定させることができる。   In addition, when the conductor 5 of the flat cable 4 is relatively thick and rigid, the piercing connection portion 26 is formed by piercing only the flat cable 4 with the piercing piece 30 of the connection terminal 20 and conductively connecting with the conductor 5. However, the connection state is stabilized. However, when the thickness of the conductor 5 of the flat cable 4 is relatively thin, for example, about 0.03 to 0.05 mm, the connection state of the piercing connection portion 26 may not be stable. In such a case, as described above, the reinforcing spacer 52 is superposed on the upper surface of the end of the flat cable 4 to be connected, and a plurality of piercing pieces 30 are pierced into the flat cable 4 and the reinforcing spacer 52 to thereby connect the flat cable 4. The piercing connection portion 26 is formed by conducting a conductive connection to the conductor 5. Then, since the piercing connection portion 26 is reinforced by the reinforcing spacer 52, the piercing piece 30 and the conductor 5 are firmly connected, the contact resistance is small, and the contact resistance is increased during use by being incorporated in the rotary connector. Without being stable, a good conduction state is secured, and the connection state of the connection portion 26 can be stabilized.

図3は図1、2の端末構造の変形例が示してある。この端末構造は接続端子54の端子本体56が銅、銅合金等で出来た良導電性角棒材を成形加工することにより形成されたバスバーで構成される。なお、45は接続端子54の雄状端子部28を挿入させる端子挿入穴で雄状端子部28に見合った大きさの矩形状穴である。他の構成は図1、2に示すものと実質同一なので説明を省略する。   FIG. 3 shows a modification of the terminal structure of FIGS. In this terminal structure, the terminal body 56 of the connection terminal 54 is composed of a bus bar formed by molding a highly conductive square bar material made of copper, copper alloy or the like. Reference numeral 45 denotes a terminal insertion hole into which the male terminal portion 28 of the connection terminal 54 is inserted, and is a rectangular hole having a size corresponding to the male terminal portion 28. Other configurations are substantially the same as those shown in FIGS.

図4は図1、2の端末構造の更に変形例が示してある。この端末構造は接続端子58を構成する端子本体24の先端側に前記雄状端子部28に代えてリード線10の導体11と導通接続されるリード線端子部60が形成される。また、保護体62のケース64は端子保持部38の前部に直方ブロック40(図2参照)が連接されていない構成になっている。その他の構成は図1、2に示すものと実質同一なので説明を省略する。   FIG. 4 shows a further modification of the terminal structure of FIGS. In this terminal structure, a lead wire terminal portion 60 that is conductively connected to the conductor 11 of the lead wire 10 instead of the male terminal portion 28 is formed on the distal end side of the terminal body 24 constituting the connection terminal 58. Further, the case 64 of the protector 62 is configured such that the rectangular block 40 (see FIG. 2) is not connected to the front portion of the terminal holding portion 38. Other configurations are substantially the same as those shown in FIGS.

なお、前記図1、2の端末構造における接続端子20及び図3の端末構造における接続端子54は前記雄状端子部28に代えて雌状端子部(図示省略)が形成されるようにしてもよい。図3、4に示す端末構造も図1、2に示すものと同一の効果が得られる。   1 and 2 and the connection terminal 54 in the terminal structure of FIG. 3 are formed with female terminal portions (not shown) instead of the male terminal portions 28. Good. The terminal structure shown in FIGS. 3 and 4 has the same effect as that shown in FIGS.

図5は図1、2の端末構造の更に変形例が示してある。この端末構造は、5個の接続端子のうち、中央の接続端子20を挟んでその両側に並列して配設される各2個の接続端子66の端子本体24に、その接続端子66のピアッシング接続部26の軸線位置と雄状端子部28の軸線位置を接続端子20、66が並列して配設される方向に変位させる曲がり部68が設けられる。接続端子20の両側に配設される各2個の接続端子66同士の曲がり部68は曲がり方向が同方向であるが、接続端子20を鋏んで対向する側(反対側)に配設された接続端子66の曲がり部68に対しては、180度異なる方向(勝手違いの方向)になっている。   FIG. 5 shows a further modification of the terminal structure of FIGS. This terminal structure includes, among the five connection terminals, the terminal body 24 of each of the two connection terminals 66 arranged in parallel on both sides of the central connection terminal 20, and the piercing of the connection terminal 66. A bent portion 68 is provided for displacing the axial position of the connecting portion 26 and the axial position of the male terminal portion 28 in a direction in which the connecting terminals 20 and 66 are arranged in parallel. The bent portions 68 of the two connection terminals 66 arranged on both sides of the connection terminal 20 have the same bending direction, but are arranged on the opposite side (opposite side) across the connection terminal 20. With respect to the bent portion 68 of the connection terminal 66, the direction is different by 180 degrees (in the direction different from the right).

図6は図3の端末構造の変形例が示してある。この端末構造は、5個の接続端子のうち、中央の接続端子54を挟んでその両側に並列して配設される各2個の接続端子70の端子本体56に、その接続端子70のピアッシング接続部26の軸線位置と雄状端子部28の軸線位置を接続端子54、70が並列して配設される方向に変位させる前記曲がり部68が設けられる。接続端子54の両側に配設される各2個の接続端子70同士の曲がり部68は曲がり方向が同方向であるが、接続端子54を鋏んで対向する側(反対側)に配設された接続端子70の曲がり部68に対しては、180度異なる方向(勝手違いの方向)になっている。   FIG. 6 shows a modification of the terminal structure of FIG. This terminal structure includes, among the five connection terminals, the terminal body 56 of each of the two connection terminals 70 arranged in parallel on both sides of the central connection terminal 54 and the piercing of the connection terminal 70. The bent portion 68 for displacing the axial position of the connecting portion 26 and the axial position of the male terminal portion 28 in a direction in which the connecting terminals 54 and 70 are arranged in parallel is provided. The bent portions 68 of the two connection terminals 70 arranged on both sides of the connection terminal 54 have the same bending direction, but are arranged on the opposite side (opposite side) across the connection terminal 54. With respect to the bent portion 68 of the connection terminal 70, the direction is different by 180 degrees (the direction is different).

図7は図4の端末構造の変形例が示してある。この端末構造は、5個の接続端子のうち、中央の接続端子58を挟んでその両側に並列して配設される各2個の接続端子72の端子本体24に、その接続端子72のピアッシング接続部26の軸線位置とリード線端子部60の軸線位置を接続端子58、72が並列して配設される方向に変位させる前記曲がり部68が設けられる。接続端子58の両側に配設される各2個の接続端子72同士の曲がり部68は曲がり方向が同方向であるが、接続端子58を鋏んで対向する側(反対側)に配設された接続端子72の曲がり部68に対しては、180度異なる方向(勝手違いの方向)になっている。なお、前記図5乃至7の端末構造では5個の接続端子のうち、4個の接続端子66、70、72に曲がり部68が設けられるが4個のみに限定されず増減変更可能である。要はピッチ変換を必要とする少なくとも1個の接続端子に曲がり部68が設けられていればよい。   FIG. 7 shows a modification of the terminal structure of FIG. This terminal structure includes, among the five connection terminals, the terminal main body 24 of each of the two connection terminals 72 arranged in parallel on both sides of the central connection terminal 58 and the piercing of the connection terminal 72. The bent portion 68 for displacing the axial position of the connecting portion 26 and the axial position of the lead wire terminal portion 60 in a direction in which the connecting terminals 58 and 72 are arranged in parallel is provided. The bent portions 68 of the two connection terminals 72 arranged on both sides of the connection terminal 58 have the same bending direction, but are arranged on the opposite side (opposite side) across the connection terminal 58. With respect to the bent portion 68 of the connection terminal 72, the direction is different by 180 degrees (the direction is different). In the terminal structure shown in FIGS. 5 to 7, the bent portion 68 is provided in the four connecting terminals 66, 70, 72 out of the five connecting terminals, but the number is not limited to four and can be increased or decreased. In short, it is sufficient that the bent portion 68 is provided in at least one connection terminal that requires pitch conversion.

これら図5乃至7の端末構造に示すように、曲がり部68を有する接続端子66、70、72が配設されると、フラットケーブル4(ピアッシング接続部26)の導体ピッチP1と相手方コネクタの雌雄端子、リード線等と導通接続される接続端子20、66、70,72の雄状端子部28、リード線端子部60等の端子部の導体ピッチP2とが異なる場合でも、新たに専用のピッチ変換部材を設ける必要がなく、端末構造が簡単で小型になり、端末構造を容易、且つ、安価に形成することができるほか、このようなピッチ変換に迅速に対応することが可能になり、接続の作業性を向上させることができる。   As shown in the terminal structures of FIGS. 5 to 7, when the connection terminals 66, 70, 72 having the bent portion 68 are disposed, the conductor pitch P1 of the flat cable 4 (piercing connection portion 26) and the male and female of the mating connector are arranged. Even if the conductor pitch P2 of the male terminal portion 28 of the connection terminals 20, 66, 70, 72 connected to the terminals, lead wires, etc., and the terminal portions of the lead wire terminal portion 60, etc. is different, a new dedicated pitch is used. There is no need to provide a conversion member, the terminal structure is simple and compact, the terminal structure can be formed easily and inexpensively, and it is possible to respond quickly to such pitch conversion and connection. The workability can be improved.

本発明に係る回転コネクタ用フラットケーブルの端末構造を該ケーブルの内端末に適用した場合の実施形態を示すもので、(A)は斜視図、(B)は(A)のX−X線矢視断面図である。The embodiment at the time of applying the terminal structure of the flat cable for rotary connectors which concerns on this invention to the inner terminal of this cable is shown, (A) is a perspective view, (B) is XX line arrow of (A). FIG. 図1の端末構造の分解斜視図である。It is a disassembled perspective view of the terminal structure of FIG. 図1、2の端末構造の変形例を示す分解斜視図である。It is a disassembled perspective view which shows the modification of the terminal structure of FIG. 図1、2の端末構造の更に変形例を示す分解斜視図である。It is a disassembled perspective view which shows the further modification of the terminal structure of FIG. 図1、2の端末構造の更に変形例を示す分解斜視図である。It is a disassembled perspective view which shows the further modification of the terminal structure of FIG. 図3の端末構造の変形例を示す分解斜視図(保護体等を省略)である。It is a disassembled perspective view (a protector etc. are abbreviate | omitted) which shows the modification of the terminal structure of FIG. 図4の端末構造の変形例を示す分解斜視図(保護体等を省略)であるIt is a disassembled perspective view (a protector etc. are abbreviate | omitted) which shows the modification of the terminal structure of FIG. 回転コネクタの一例を示す平面図である。It is a top view which shows an example of a rotation connector. 従来の端末構造を示すもので、(A)は側面図、(B)は底面図、(C)は接続端子が絶縁支持体で連結された状態の斜視図である。1A and 1B show a conventional terminal structure, in which FIG. 1A is a side view, FIG. 1B is a bottom view, and FIG. 1C is a perspective view in a state where connection terminals are connected by an insulating support.

符号の説明Explanation of symbols

1 第1のハウジング
2 第2のハウジング
3 室
4 フラットケーブル
5 導体
10 リード線
11 導体
20 接続端子
22 保護体
24 端子本体
26 ピアッシング接続部
28 雄状端子部
29 接続条片部
30 ピアス片
32 係止段部
34 ケース
36 カバー
38 端子保持部
40 直方ブロック
42 端子仕切り壁
43 端子収容溝
44 端子挿入穴
45 端子挿入穴
46 係止タブ
48 係止鍔部
50 突条
52 補助スペーサ
54 接続端子
56 端子本体
58 接続端子
60 リード線端子部
62 保護体
64 ケース
66 接続端子
68 曲がり部
70 接続端子
72 接続端子
P1 フラットケーブルの導体ピッチ
P2 接続端子の端子部の導体ピッチ
DESCRIPTION OF SYMBOLS 1 1st housing 2 2nd housing 3 Chamber 4 Flat cable 5 Conductor 10 Lead wire 11 Conductor 20 Connection terminal 22 Protection body 24 Terminal body 26 Piercing connection part 28 Male terminal part 29 Connection strip part 30 Piercing piece 32 Engagement Stopped portion 34 Case 36 Cover 38 Terminal holding portion 40 Rectangular block 42 Terminal partition wall 43 Terminal receiving groove 44 Terminal insertion hole 45 Terminal insertion hole 46 Locking tab 48 Locking hook 50 Projection 52 Auxiliary spacer 54 Connection terminal 56 Terminal Body 58 Connection terminal 60 Lead wire terminal part 62 Protective body 64 Case 66 Connection terminal 68 Bending part 70 Connection terminal 72 Connection terminal P1 Conductor pitch of flat cable P2 Conductor pitch of terminal part of connection terminal

Claims (2)

第1のハウジング及び第2のハウジングが同心状に、且つ、相対的に回転自在に組み合わされ、両ハウジングがなすリング状の室内に複数の導体を有するフラットケーブルが巻回されて収容される回転コネクタにあって、前記フラットケーブルの端末における各導体に導通接続されるケーブル接続部が端子本体の基端側に形成され、端子本体の先端側に端子部が形成された複数の接続端子と、その接続端子を保護する保護体とを備えた回転コネクタ用フラットケーブルの端末構造において、前記ケーブル接続部が前記接続端子の基端側に突設された複数のピアス片を導体の厚さが0.03〜0.05mmであるフラットケーブルとこれに重合した補強スペーサに突き刺してその導体に導通接続させて構成されるピアッシング接続部であり、前記保護体が複数の接続端子を収容するケースと、これに装着されるカバーとからなり、フラットケーブルの端末におけるピアッシング接続部が形成される部位の後方に、フラットケーブルの幅方向に沿って下方へ屈曲する係止段部が設けられ、カバーの後部にその幅方向に沿って下方へ突出する係止鍔部が設けられ、ケースにカバーが装着されたとき、フラットケーブルの係止段部にカバーの係止鍔部が係合するように構成されることを特徴とする回転コネクタ用フラットケーブルの端末構造。 Rotation in which a first housing and a second housing are concentrically and relatively rotatably combined, and a flat cable having a plurality of conductors is wound and accommodated in a ring-shaped chamber formed by both housings. In the connector, a cable connection portion that is conductively connected to each conductor in the end of the flat cable is formed on the proximal end side of the terminal body, and a plurality of connection terminals in which the terminal portion is formed on the distal end side of the terminal body, In a terminal structure of a flat cable for a rotary connector provided with a protector that protects the connection terminal, a plurality of pierce pieces in which the cable connection portion protrudes from the base end side of the connection terminal has a conductor thickness of 0. piercing connecting portion der configured pierce the reinforcement spacers by conductively connected to the conductors and the flat cable polymerization to a .03~0.05mm is, before The protector is composed of a case for housing a plurality of connection terminals and a cover attached to the case, and is located behind the portion where the piercing connection portion is formed at the end of the flat cable and downward along the width direction of the flat cable. A locking step portion that is bent is provided, and a locking hook portion that protrudes downward along the width direction is provided at the rear portion of the cover. When the cover is attached to the case, the cover is attached to the locking step portion of the flat cable. A terminal structure of a flat cable for a rotary connector , wherein the locking collar portion of the rotary connector is engaged . 少なくとも一つの前記接続端子の端子本体に、その接続端子のピアッシング接続部の軸線位置と端子部の軸線位置を接続端子が並列して配設される方向に変位させる曲がり部が設けられることを特徴とする請求項1項記載の回転コネクタ用フラットケーブルの端末構造。 The terminal body of at least one of the connection terminals is provided with a bent portion that displaces the axis position of the piercing connection portion of the connection terminal and the axis position of the terminal portion in a direction in which the connection terminals are arranged in parallel. The terminal structure of the flat cable for rotary connectors according to claim 1 .
JP2004126535A 2004-04-22 2004-04-22 Terminal structure of flat cable for rotary connector Expired - Fee Related JP4128976B2 (en)

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JP2008282713A (en) * 2007-05-11 2008-11-20 Fujikura Ltd Flat wiring member
JP5202917B2 (en) * 2007-10-02 2013-06-05 古河電気工業株式会社 Power supply device for flexible flat harness and sliding door
JP5379368B2 (en) * 2007-10-02 2013-12-25 古河電気工業株式会社 Power supply device for flexible flat harness and sliding door
JP4981605B2 (en) * 2007-10-02 2012-07-25 古河電気工業株式会社 Power supply device for flexible flat harness and sliding door
JP2010108672A (en) * 2008-10-29 2010-05-13 Furukawa Electric Co Ltd:The Connecting method of connection terminal, and connecting structure of the same
JP5403801B2 (en) * 2009-07-02 2014-01-29 矢崎総業株式会社 Flexible flat cable connection structure and connection method
JP5748189B2 (en) 2009-11-30 2015-07-15 矢崎総業株式会社 Connecting material connection structure
JP5566831B2 (en) * 2010-09-27 2014-08-06 古河電気工業株式会社 Flexible flat cable with connector and rotary connector device
JP5797892B2 (en) * 2010-11-14 2015-10-21 株式会社エクスプロア Connector
KR101322593B1 (en) * 2011-03-14 2013-10-28 알프스 덴키 가부시키가이샤 Rotary connector
EP2637264B1 (en) * 2012-03-09 2018-09-19 Alps Electric Co., Ltd. Rotary connector
KR101961043B1 (en) * 2017-11-14 2019-03-21 주식회사 현대케피코 Holder for resistance welding
EP4222817A1 (en) 2020-09-30 2023-08-09 Saint-Gobain Glass France Electrical line connection for making electrical contact with a surface electrode

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