JP6815502B2 - Rotating connector - Google Patents

Rotating connector Download PDF

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Publication number
JP6815502B2
JP6815502B2 JP2019525075A JP2019525075A JP6815502B2 JP 6815502 B2 JP6815502 B2 JP 6815502B2 JP 2019525075 A JP2019525075 A JP 2019525075A JP 2019525075 A JP2019525075 A JP 2019525075A JP 6815502 B2 JP6815502 B2 JP 6815502B2
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fpc
rotor
wiring member
wiring
housing
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JPWO2018235341A1 (en
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健悟 齋藤
健悟 齋藤
俊晃 朝倉
俊晃 朝倉
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Alps Alpine Co Ltd
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Alps Electric Co Ltd
Alps Alpine Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/77—Coupling devices for flexible printed circuits, flat or ribbon cables or like structures
    • H01R12/79—Coupling devices for flexible printed circuits, flat or ribbon cables or like structures connecting to rigid printed circuits or like structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • B60R16/027—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems between relatively movable parts of the vehicle, e.g. between steering wheel and column
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R35/00—Flexible or turnable line connectors, i.e. the rotation angle being limited
    • H01R35/04—Turnable line connectors with limited rotation angle with frictional contact members

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Description

本開示は、回転コネクタに関する。 The present disclosure relates to a rotary connector.

回転コネクタにおけるロータとステータの電気的な接続に複数のフラットケーブルを使用する技術が知られている。 A technique is known in which a plurality of flat cables are used for electrical connection between a rotor and a stator in a rotary connector.

特開２０１３−２１９００７号公報Japanese Unexamined Patent Publication No. 2013-219007 特開２００６−１００７３３号公報Japanese Unexamined Patent Publication No. 2006-100733

しかしながら、上記の特許文献１に開示される従来技術では、フラットケーブルを用いることに起因した課題がある。かかる課題としては、絶縁フィルムにPET（Polyethylene terephthalate）が使用されており耐熱性が低い点や、微細ピッチが困難なため信号線が増えるとフラットケーブルの本数も複数本に増える点等がある。 However, in the prior art disclosed in Patent Document 1 above, there is a problem caused by using a flat cable. Such problems include the fact that PET (Polyethylene terephthalate) is used for the insulating film and has low heat resistance, and that the number of flat cables increases as the number of signal lines increases due to the difficulty of fine pitching.

この課題を解決するためにフラットケーブルの替わりにＦＰＣ（Flexible Printed Circuits）を使用する方法があり得るが、ＦＰＣは、上記の特許文献２に開示されているように、シート基材に単位基板が形成された形で納入されるのが一般的である。シート基材から各単位基板に分割してから製品への組み込みを行うが、単位基板の形状が、Ｌ字形状、もしくはＴ字形状のように部分的に凹凸がある形状の場合、シート基材に複数個を並べた際に各単位基板間に比較的大きい隙間ができてしまう。そのため、１枚のシート基材から得られる単位基板の個数が減ってしまい（即ち歩留まりが悪くなり）、ＦＰＣの部品費がアップし、結果として回転コネクタの低価格化が困難となる。 In order to solve this problem, there may be a method of using FPC (Flexible Printed Circuits) instead of the flat cable, but in FPC, as disclosed in Patent Document 2 above, a unit substrate is used as a sheet base material. It is generally delivered in a formed form. The sheet substrate is divided into each unit substrate and then incorporated into the product. If the unit substrate has an L-shape or a T-shape with partial irregularities, the sheet substrate is used. When a plurality of units are arranged in a row, a relatively large gap is created between the unit substrates. Therefore, the number of unit substrates obtained from one sheet substrate is reduced (that is, the yield is deteriorated), the component cost of the FPC is increased, and as a result, it becomes difficult to reduce the price of the rotary connector.

そこで、１つの側面では、本発明は、ＦＰＣを使用しても低価格化が可能な回転コネクタの提供を目的とする。 Therefore, on one aspect, it is an object of the present invention to provide a rotary connector that can be reduced in price even if FPC is used.

１つの側面では、ステータと、前記ステータに対して相対的に回転可能なロータと、前記ステータに備えられたステータ側の端子部材と前記ロータに備えられたロータ側の端子部材との間を電気的に接続するケーブルと、を備える回転コネクタにおいて、
前記ケーブルは、略長方形の形態のＦＰＣ（Flexible Printed Circuits）であり、
前記ＦＰＣの一端が電気的に接続されるとともに前記ステータ側の端子部材又は前記ロータ側の端子部材が電気的に接続される配線を有する筐体配線部材を更に備え、前記筐体配線部材は、成形回路部品（ＭＩＤ）である、回転コネクタが提供される。On one side, electricity is provided between the stator, a rotor that is rotatable relative to the stator, and a stator-side terminal member on the stator and a rotor-side terminal member on the rotor. In a rotating connector that includes a cable that connects
The cables are FPCs (Flexible Printed Circuits) in the form of a substantially rectangular shape.
The housing wiring member further includes a housing wiring member having a wiring in which one end of the FPC is electrically connected and the terminal member on the stator side or the terminal member on the rotor side is electrically connected. A rotating connector, which is a molded circuit component (MID), is provided.

１つの側面では、本発明によれば、ＦＰＣを使用しても低価格化が可能な回転コネクタが得られる。 On one side, according to the present invention, it is possible to obtain a rotary connector that can be reduced in price even if FPC is used.

一実施例による回転コネクタ１の外観斜視図である。It is external perspective view of the rotary connector 1 by one Example. ＦＰＣ４の一例の説明図である。It is explanatory drawing of an example of FPC4. 筐体配線部材７上におけるＦＰＣ４及び端子部材５０の実装状態を示す斜視図である。It is a perspective view which shows the mounting state of the FPC 4 and the terminal member 50 on the housing wiring member 7. 図３の分解斜視図である。It is an exploded perspective view of FIG. 一の筐体配線部材に複数本のＦＰＣが電気的に接続される変形例の説明図である。It is explanatory drawing of the modification of the modification in which a plurality of FPCs are electrically connected to one housing wiring member.

以下、添付図面を参照しながら各実施例について詳細に説明する。 Hereinafter, each embodiment will be described in detail with reference to the accompanying drawings.

図１は、一実施例による回転コネクタ１の外観斜視図である。図１には、回転コネクタ１の回転軸Ｉが示されると共に、回転軸Ｉに平行なＺ軸が示される。以下では、説明上、Ｚ方向のＺ１側を「上側」とし、Ｚ方向のＺ２側を「下側」とし、軸方向、前記軸方向に直交する径方向、及び前記回転コネクタ１の周方向は、回転軸Ｉを基準とする。具体的には、軸方向とは、回転軸Ｉの方向を指す。径方向内側とは、前記径方向において回転軸Ｉに近い側を指し、前記径方向において径方向外側とは、回転軸Ｉに遠い側を指す。また、周方向とは、回転軸Ｉまわりの周方向を指す。またＦＰＣ（Flexible Printed Circuits）を以下では単にＦＰＣと記載する。 FIG. 1 is an external perspective view of the rotary connector 1 according to an embodiment. In FIG. 1, the rotation axis I of the rotation connector 1 is shown, and the Z axis parallel to the rotation axis I is shown. In the following, for the sake of explanation, the Z1 side in the Z direction is referred to as "upper side", the Z2 side in the Z direction is referred to as "lower side", and the axial direction, the radial direction orthogonal to the axial direction, and the circumferential direction of the rotary connector 1 are defined. , With reference to the axis of rotation I. Specifically, the axial direction refers to the direction of the rotation axis I. The radial inside refers to the side close to the rotation axis I in the radial direction, and the radial outside refers to the side far from the rotation axis I in the radial direction. Further, the circumferential direction refers to the circumferential direction around the rotation axis I. Further, FPC (Flexible Printed Circuits) will be simply referred to as FPC below.

回転コネクタ１は、車両のステアリングコラム（図示せず）と、ステアリングシャフト（図示せず）と一体に回転する電子部品（図示せず）との間で電気信号を伝送するための接続装置である。 The rotary connector 1 is a connecting device for transmitting an electric signal between the steering column (not shown) of the vehicle and an electronic component (not shown) that rotates integrally with the steering shaft (not shown). ..

図１に示すように、回転コネクタ１は、ロータ２と、ステータ３と、ＦＰＣ４（図２参照）と、筐体配線部材７とを備えている。 As shown in FIG. 1, the rotary connector 1 includes a rotor 2, a stator 3, an FPC 4 (see FIG. 2), and a housing wiring member 7.

ロータ２は、ステアリングコラムに内包されたステアリングシャフトが軸方向に挿通される。ロータ２は、径方向内側に内周壁８を画成する円環状の部材である。ロータ２は、例えば樹脂材料から成る。ロータ２の内周壁８により画成される径方向内側の空間には、ステアリングシャフトが軸方向に挿通される。ロータ２は、ステータ３に対して回転可能に支持される。 A steering shaft included in a steering column is inserted into the rotor 2 in the axial direction. The rotor 2 is an annular member that defines an inner peripheral wall 8 inward in the radial direction. The rotor 2 is made of, for example, a resin material. A steering shaft is inserted in the axial direction into the space inside the radial direction defined by the inner peripheral wall 8 of the rotor 2. The rotor 2 is rotatably supported with respect to the stator 3.

ステータ３は、車両に固定される。ステータ３は、ステアリングコラムに取り付けられる。ステータ３には、ロータ２が回転自在に組み付けられる。ステータ３は、径方向外側に外周壁９を画成する円環状の部材である。 The stator 3 is fixed to the vehicle. The stator 3 is attached to the steering column. The rotor 2 is rotatably assembled to the stator 3. The stator 3 is an annular member that defines the outer peripheral wall 9 on the outer side in the radial direction.

図２は、ＦＰＣ４の一例の説明図であり、ロータ２の一部（上側の上方フランジ部）に取り付けられるＦＰＣ４を下方から見た斜視図である。図２では、説明のため、ＦＰＣ４の一部が直線状に延在する態様で模式的に示される。実際には、ＦＰＣ４は、渦巻き状に巻回されて収納される。 FIG. 2 is an explanatory view of an example of the FPC 4, and is a perspective view of the FPC 4 attached to a part of the rotor 2 (upper flange portion) as viewed from below. In FIG. 2, for the sake of explanation, a part of the FPC 4 is schematically shown in a linearly extending manner. In reality, the FPC 4 is spirally wound and stored.

ＦＰＣ４は、ステータ３とロータ２との間を電気的に接続するケーブルの一例であり、ロータ２とステータ３との間での電気的導通を確保する。ＦＰＣ４は、略長方形でかつ平らな形態であり、エッチングにより長手方向に亘って形成される銅箔等の複数の導電パターンと、これらを両面から挟んでカバーするポリイミド等の絶縁フィルムにより形成される。「略長方形」とは、一定の幅ｄ（図２参照）で長尺方向に直線状に延在する形態であるが、幅ｄがＦＰＣ４の端部等で僅かに変化してもよい。 The FPC 4 is an example of a cable that electrically connects the stator 3 and the rotor 2, and ensures electrical continuity between the rotor 2 and the stator 3. The FPC 4 has a substantially rectangular and flat shape, and is formed of a plurality of conductive patterns such as copper foil formed in the longitudinal direction by etching and an insulating film such as polyimide that sandwiches and covers these from both sides. .. The "substantially rectangular" is a form in which the width d (see FIG. 2) extends linearly in the elongated direction, but the width d may change slightly at the end of the FPC 4 or the like.

ＦＰＣ４は、回転コネクタ１の本体内の環状空間部（図示せず）内に設けられる。具体的には、径方向で内周壁８と外周壁９の間には、周方向に延在する環状空間部が形成され、環状空間部内にはＦＰＣ４が収容される。ＦＰＣ４は、例えば、重ね合わされた態様で、渦巻き状に巻回されて収納されてもよい。 The FPC 4 is provided in an annular space (not shown) in the main body of the rotary connector 1. Specifically, an annular space portion extending in the circumferential direction is formed between the inner peripheral wall 8 and the outer peripheral wall 9 in the radial direction, and the FPC 4 is housed in the annular space portion. The FPC 4 may be spirally wound and stored, for example, in a superposed manner.

ＦＰＣ４は、図２のＸ部に示すように、一端がロータ２に電気的に接続され、図示しない他端がステータ３に電気的に接続される。図２のＸ部では、ＦＰＣ４の一端は、ロータ２に固定される筐体配線部材７に固定され、筐体配線部材７上の配線７４（図３参照）に電気的に接続される。 As shown in part X of FIG. 2, one end of the FPC 4 is electrically connected to the rotor 2, and the other end (not shown) is electrically connected to the stator 3. In the X portion of FIG. 2, one end of the FPC 4 is fixed to the housing wiring member 7 fixed to the rotor 2 and electrically connected to the wiring 74 (see FIG. 3) on the housing wiring member 7.

筐体配線部材７は、上述のように、ＦＰＣ４の一端が電気的に接続されるとともに、ロータ２に備えられたロータ２側の端子部材５０（図３参照）が電気的に接続される。筐体配線部材７は、ＦＰＣ４及び端子部材５０と共に、図３以降を参照して詳説する。 As described above, one end of the FPC 4 of the housing wiring member 7 is electrically connected, and the terminal member 50 (see FIG. 3) on the rotor 2 side provided in the rotor 2 is electrically connected. The housing wiring member 7 will be described in detail together with the FPC 4 and the terminal member 50 with reference to FIGS. 3 and 3.

次に、図３及び図４を参照して、ＦＰＣ４とロータ２との間の電気的な接続構造（図２のＸ部）について説明する。尚、ここでは、ＦＰＣ４とロータ２側との間を電気的に接続する構造について説明するが、ＦＰＣ４とステータ３側との間を電気的に接続する構造についても実質的に同様である。 Next, the electrical connection structure (part X in FIG. 2) between the FPC 4 and the rotor 2 will be described with reference to FIGS. 3 and 4. Although the structure for electrically connecting the FPC 4 and the rotor 2 side will be described here, the structure for electrically connecting the FPC 4 and the stator 3 side is substantially the same.

図３は、筐体配線部材７上におけるＦＰＣ４及び端子部材５０の実装の状態を示す斜視図であり、図４は、図３の分解斜視図である。尚、図３及び図４は、径方向内側から視た斜視図であり、図２と同様に、ＦＰＣ４の一部が直線状に延在する態様で模式的に示される。 FIG. 3 is a perspective view showing a state in which the FPC 4 and the terminal member 50 are mounted on the housing wiring member 7, and FIG. 4 is an exploded perspective view of FIG. It should be noted that FIGS. 3 and 4 are perspective views viewed from the inside in the radial direction, and are schematically shown in a manner in which a part of the FPC 4 extends linearly, as in FIG. 2.

筐体配線部材７は、第１表面７１と第２表面７２を有する。径方向が第１表面７１の法線方向となり、軸方向が第２表面７２の法線方向となる。尚、第１表面７１は、平面ではなく僅かに湾曲した曲面（例えばロータ２の内周壁８に沿った曲面）となっていてもよい。 The housing wiring member 7 has a first surface 71 and a second surface 72. The radial direction is the normal direction of the first surface 71, and the axial direction is the normal direction of the second surface 72. The first surface 71 may be a slightly curved curved surface (for example, a curved surface along the inner peripheral wall 8 of the rotor 2) instead of a flat surface.

筐体配線部材７は、成形回路部品（ＭＩＤ：Molded Interconnect Device）であり、射出成形品に配線等が形成された部品である。尚、ＭＩＤの工法は任意であり、One-Shot法やTwo-Shot法が用いられてもよい。例えば、配線（後述の配線７４）は、例えば筐体配線部材７を形成する樹脂構造体上にメッキや蒸着を行うことで形成されてよい。 The housing wiring member 7 is a molding circuit component (MID: Molded Interconnect Device), and is a component in which wiring or the like is formed on an injection molded product. The MID construction method is arbitrary, and the One-Shot method or the Two-Shot method may be used. For example, the wiring (wiring 74 described later) may be formed, for example, by plating or vapor deposition on the resin structure forming the housing wiring member 7.

図３及び図４に示す例では、第１表面７１及び第２表面７２上には、配線７４が形成される。従って、配線７４は、第１表面７１及び第２表面７２の両表面上にわたり延在する。図３及び図４に示す例では、配線７４は２本であるが、１本であってよいし、３本以上であってもよい。 In the examples shown in FIGS. 3 and 4, the wiring 74 is formed on the first surface 71 and the second surface 72. Therefore, the wiring 74 extends over both surfaces of the first surface 71 and the second surface 72. In the example shown in FIGS. 3 and 4, the number of wirings 74 is two, but the number of wirings 74 may be one or three or more.

筐体配線部材７の第１表面７１には、ＦＰＣ４の一端が電気的に接続される。筐体配線部材７の第１表面７１には、好ましくは、図４に示すように、ＦＰＣ４を位置決めして保持するカシメピン７１１が例えば筐体配線部材７を形成する樹脂と同一の樹脂により筐体配線部材７に一体的に設けられる。これに対応して、ＦＰＣ４には、カシメピン７１１が挿通される穴４２が形成される。カシメピン７１１及び穴４２は、複数組形成され、図３及び図４に示す例では、４組形成される。ＦＰＣ４は、穴４２内にカシメピン７１１を通し、
カシメピン７１１をカシメることで筐体配線部材７に固定される。これにより、筐体配線部材７に対してＦＰＣ４を正確に位置決めして固定できる。このようにして、ＦＰＣ４は、筐体配線部材７に位置決めして保持できるので、簡単な構成で確実に端子同士（配線７４とＦＰＣ４の配線）の電気的な接続を実現できる。尚、第１表面７１上の配線７４とＦＰＣ４の配線とは、例えば半田や導電性接着剤等により接合されてよい。例えば、ＦＰＣ４の実装前に、ペースト状の半田（例、クリーム半田）が塗布され、カシメ後に、リフロー工程により接合が実現されてもよい。尚、この場合、リフロー実装可能となるように、筐体配線部材７は、はんだ耐熱性を備える樹脂により形成されるとよい。One end of the FPC 4 is electrically connected to the first surface 71 of the housing wiring member 7. The first surface 71 of the housing wiring member 7 is preferably made of the same resin as the resin forming the housing wiring member 7, for example, the caulking pin 711 that positions and holds the FPC 4, as shown in FIG. It is integrally provided on the wiring member 7. Correspondingly, the FPC 4 is formed with a hole 42 through which the caulking pin 711 is inserted. A plurality of sets of caulking pins 711 and holes 42 are formed, and in the examples shown in FIGS. 3 and 4, four sets are formed. The FPC4 passes the caulking pin 711 through the hole 42 and passes it through the hole 42.
By caulking the caulking pin 711, it is fixed to the housing wiring member 7. As a result, the FPC 4 can be accurately positioned and fixed to the housing wiring member 7. In this way, since the FPC 4 can be positioned and held on the housing wiring member 7, it is possible to reliably realize electrical connection between the terminals (wiring of the wiring 74 and the FPC 4) with a simple configuration. The wiring 74 on the first surface 71 and the wiring of the FPC 4 may be joined by, for example, solder or a conductive adhesive. For example, a paste-like solder (eg, cream solder) may be applied before mounting the FPC 4, and after caulking, joining may be realized by a reflow step. In this case, the housing wiring member 7 may be made of a resin having solder heat resistance so that the reflow can be mounted.

筐体配線部材７の第２表面７２には、端子部材５０が電気的に接続される。具体的には、筐体配線部材７の第２表面７２には、端子部材５０が実装され、端子部材５０が保持する端子５２が第２表面７２上の配線７４に電気的に接続される。尚、図３及び図４に示す例では、筐体配線部材７の第２表面７２には、端子部材５０の嵌合溝５４０（図４参照）とのスナップ嵌合用の爪部７８０や、端子部材５０の突起５３０（図４参照）が嵌合される嵌合穴７８２が形成される。第２表面７２上の配線７４と端子５２とは、例えば半田や導電性接着剤等により接合されてよい。 The terminal member 50 is electrically connected to the second surface 72 of the housing wiring member 7. Specifically, the terminal member 50 is mounted on the second surface 72 of the housing wiring member 7, and the terminal 52 held by the terminal member 50 is electrically connected to the wiring 74 on the second surface 72. In the examples shown in FIGS. 3 and 4, the second surface 72 of the housing wiring member 7 has a claw portion 780 for snap fitting with the fitting groove 540 (see FIG. 4) of the terminal member 50 and a terminal. A fitting hole 782 is formed in which the protrusion 530 (see FIG. 4) of the member 50 is fitted. The wiring 74 and the terminal 52 on the second surface 72 may be joined by, for example, solder or a conductive adhesive.

端子部材５０は、複数のピン５２１がＺ方向に延在するピンヘッダの形態である。図３及び図４に示す例では、複数のピン５２１は、２本であり、それぞれ端子５２と一体である。端子部材５０は、ロータ２のコネクタ部２Ｂ（図１及び図２参照）に挿入される。ピン５２１は、コネクタ部２Ｂ内の端子（外部端子）として機能する。 The terminal member 50 is in the form of a pin header in which a plurality of pins 521 extend in the Z direction. In the examples shown in FIGS. 3 and 4, the plurality of pins 521 are two, and each is integrated with the terminal 52. The terminal member 50 is inserted into the connector portion 2B (see FIGS. 1 and 2) of the rotor 2. The pin 521 functions as a terminal (external terminal) in the connector portion 2B.

本実施例によれば、上述のように、筐体配線部材７を介してＦＰＣ４及び端子部材５０とが電気的に接続されるので、ＦＰＣ４としてＦＰＣを使用しても低価格化が可能な回転コネクタ１を実現できる。具体的には、筐体配線部材７は、樹脂成型品であるので、形状の自由度が高く、ＦＰＣ４を略長方形の形態で実現した場合でも、ＦＰＣ４との電気的な接続が容易となる。従って、ＦＰＣ４を略長方形の形態で実現することで、略長方形状のシート基材から複数のＦＰＣ４を製造する際の歩留まりが向上し、低価格化を図ることができる。即ち、ＦＰＣ４が略長方形である場合、シート基材に最小の隙間で複数のＦＰＣ４を形成できるので、歩留まりが向上し、低価格化を図ることができる。 According to this embodiment, as described above, since the FPC 4 and the terminal member 50 are electrically connected via the housing wiring member 7, the rotation that can be reduced in price even if the FPC is used as the FPC 4. Connector 1 can be realized. Specifically, since the housing wiring member 7 is a resin molded product, the degree of freedom in shape is high, and even when the FPC 4 is realized in a substantially rectangular shape, electrical connection with the FPC 4 becomes easy. Therefore, by realizing the FPC 4 in the form of a substantially rectangular shape, the yield when a plurality of FPC 4s are manufactured from the substantially rectangular sheet base material can be improved, and the price can be reduced. That is, when the FPC 4 is substantially rectangular, a plurality of FPC 4 can be formed on the sheet base material with the minimum gap, so that the yield can be improved and the price can be reduced.

また、本実施例によれば、上述のように、筐体配線部材７は、径方向が第１表面７１の法線方向となるように第１表面７１を有し、第１表面７１上でＦＰＣ４が電気的に接続される。ここで、比較例として、ＦＰＣを筐体配線部材７の第２表面７２上で電気的に接続する構成（図示せず）の場合、第２表面７２上から周方向に延在させるためにＦＰＣを複数回曲げる必要（例えば４５度に折り曲げる必要）が生じる。この点、本実施例によれば、上述のように、第１表面７１上でＦＰＣ４が電気的に接続されるので、かかる比較例で生じる曲げが不要となり、組み付け作業が容易であり、曲げ位置のバラつき等の影響を無くすことができる。 Further, according to the present embodiment, as described above, the housing wiring member 7 has the first surface 71 so that the radial direction is the normal direction of the first surface 71, and the housing wiring member 7 has the first surface 71 on the first surface 71. The FPC 4 is electrically connected. Here, as a comparative example, in the case of a configuration in which the FPC is electrically connected on the second surface 72 of the housing wiring member 7 (not shown), the FPC extends in the circumferential direction from the second surface 72. Needs to be bent multiple times (for example, needs to be bent at 45 degrees). In this regard, according to the present embodiment, as described above, since the FPC 4 is electrically connected on the first surface 71, the bending that occurs in the comparative example becomes unnecessary, the assembly work is easy, and the bending position. It is possible to eliminate the influence of variations and the like.

以上、各実施例について詳述したが、特定の実施例に限定されるものではなく、特許請求の範囲に記載された範囲内において、種々の変形及び変更が可能である。また、前述した実施例の構成要素を全部又は複数を組み合わせることも可能である。 Although each embodiment has been described in detail above, the present invention is not limited to a specific embodiment, and various modifications and changes can be made within the scope of the claims. It is also possible to combine all or a plurality of the components of the above-described embodiment.

例えば、上述した実施例では、一の筐体配線部材７に１本のＦＰＣ４が電気的に接続されるが、一の筐体配線部材７に複数本のＦＰＣ４が電気的に接続されてもよい。例えば、図５に示す例では、筐体配線部材７Ａの第１表面７１Ａには、２本のＦＰＣ４Ａ，４Ｂが電気的に接続されている。この場合、図５に示すように、筐体配線部材７Ａの第２表面７２Ａには、２つの端子部材５０Ａ，５０Ｂが電気的に接続されてもよい。尚、図５に示す例では、ＦＰＣ４Ａ，４Ｂのそれぞれに対応して、２組の配線（２本の配線７４Ａ、及び２本の配線７４Ｂ）が形成されている。図５に示すように、一の筐体配線部材７に複数本のＦＰＣ４が電気的に接続される場合は、１本のＦＰＣ４あたりの筐体配線部材７の部品点数を少なくできる。また、筐体配線部材７への複数本のＦＰＣ４の接続作業も冶具へのセットが１度で済むため組み立て性が良好となる効果もある。 For example, in the above-described embodiment, one FPC 4 is electrically connected to one housing wiring member 7, but a plurality of FPC 4s may be electrically connected to one housing wiring member 7. .. For example, in the example shown in FIG. 5, two FPCs 4A and 4B are electrically connected to the first surface 71A of the housing wiring member 7A. In this case, as shown in FIG. 5, two terminal members 50A and 50B may be electrically connected to the second surface 72A of the housing wiring member 7A. In the example shown in FIG. 5, two sets of wirings (two wirings 74A and two wirings 74B) are formed corresponding to each of the FPCs 4A and 4B. As shown in FIG. 5, when a plurality of FPCs 4 are electrically connected to one housing wiring member 7, the number of parts of the housing wiring member 7 per FPC 4 can be reduced. Further, the work of connecting the plurality of FPCs 4 to the housing wiring member 7 can be set to the jig only once, which has the effect of improving the assembleability.

また、上述した実施例では、ＦＰＣ４は、両端で筐体配線部材７を介して外部端子（ロータ２側とステータ３側の各外部端子）に電気的に接続されるが、一端だけが筐体配線部材７を介して外部端子に電気的に接続されてもよい。この場合、ＦＰＣ４の他端については、任意の方法で外部端子に電気的に接続されてもよい。 Further, in the above-described embodiment, the FPC 4 is electrically connected to external terminals (each external terminal on the rotor 2 side and the stator 3 side) via the housing wiring member 7 at both ends, but only one end is the housing. It may be electrically connected to the external terminal via the wiring member 7. In this case, the other end of the FPC 4 may be electrically connected to the external terminal by any method.

以上、本発明を実施例に基づいて説明したが、本発明は上記実施例に限定されるものではなく、特許請求の範囲に記載の範囲内で様々な変形が可能である。 Although the present invention has been described above based on the examples, the present invention is not limited to the above examples, and various modifications can be made within the scope of the claims.

本願は、日本特許庁に２０１７年６月２１日に出願された基礎出願２０１７−１２１７２５号の優先権を主張するものであり、その全内容を参照によりここに援用する。 This application claims the priority of Basic Application No. 2017-121725 filed with the Japan Patent Office on June 21, 2017, the entire contents of which are incorporated herein by reference.

１ 回転コネクタ
２ ロータ
２Ｂ コネクタ部
３ ステータ
４ ＦＰＣ
４Ａ ＦＰＣ
４Ｂ ＦＰＣ
７ 筐体配線部材
７Ａ 筐体配線部材
８ 内周壁
９ 外周壁
４２ 穴
５０ 端子部材
５０Ａ 端子部材
５０Ｂ 端子部材
５２ 端子
７１ 第１表面
７１Ａ 第１表面
７２ 第２表面
７２Ａ 第２表面
７４ 配線
７４Ａ 配線
７４Ｂ 配線
５２１ ピン
５３０ 突起
５４０ 嵌合溝
７１１ カシメピン
７８０ 爪部
７８２ 嵌合穴1 Rotating connector 2 Rotor 2B Connector part 3 Stator 4 FPC
4A FPC
4B FPC
7 Housing wiring member 7A Housing wiring member 8 Inner peripheral wall 9 Outer wall 42 Hole 50 Terminal member 50A Terminal member 50B Terminal member 52 Terminal 71 First surface 71A First surface 72 Second surface 72A Second surface 74 Wiring 74A Wiring 74B Wiring 521 Pin 530 Protrusion 540 Fitting groove 711 Caulking pin 780 Claw 782 Fitting hole

Claims (6)

ステータと、前記ステータに対して相対的に回転可能なロータと、前記ステータに備えられたステータ側の端子部材と前記ロータに備えられたロータ側の端子部材との間を電気的に接続するケーブルと、を備える回転コネクタにおいて、
前記ケーブルは、略長方形のＦＰＣ（Flexible Printed Circuits）であり、
前記ＦＰＣの一端が電気的に接続されるとともに前記ステータ側の端子部材又は前記ロータ側の端子部材が電気的に接続される配線を有する筐体配線部材を更に備え、
前記筐体配線部材は、成形回路部品（ＭＩＤ：Molded Interconnect Device）であり、前記ロータの回転軸に対する径方向が第１表面の法線方向となるような第１表面と、前記ロータの回転軸の方向が第２表面の法線方向となるような第２表面とを有し、
前記ＦＰＣは、前記第１表面上の前記配線に電気的に接続され、前記筐体配線部材の配線に電気的に接続される前記端子部材は、前記第２表面上の前記配線に電気的に接続され、
前記筐体配線部材は、折れ曲がっていることにより、前記第１表面および前記第２表面を有し、
前記筐体配線部材の前記配線が、前記第１表面と前記第２表面とに沿って折れ曲がっている
回転コネクタ。 A cable that electrically connects the stator, a rotor that can rotate relative to the stator, and a terminal member on the stator side provided on the stator and a terminal member on the rotor side provided on the rotor. In a rotary connector with
The cable is a substantially rectangular FPC (Flexible Printed Circuits).
A housing wiring member having a wiring in which one end of the FPC is electrically connected and the terminal member on the stator side or the terminal member on the rotor side is electrically connected is further provided.
The housing wiring member is a molded circuit component (MID: Molded Interconnect Device), and has a first surface such that the radial direction with respect to the rotation axis of the rotor is the normal direction of the first surface, and the rotation axis of the rotor. Has a second surface such that the direction of is the normal direction of the second surface.
The FPC is electrically connected to the wiring on the first surface, and the terminal member electrically connected to the wiring of the housing wiring member is electrically connected to the wiring on the second surface. are connected,
The housing wiring member has the first surface and the second surface because it is bent.
A rotary connector in which the wiring of the housing wiring member is bent along the first surface and the second surface . 前記筐体配線部材の前記配線が、前記第１表面の前記ＦＰＣと前記第２表面の前記端子部材とを直結する
請求項１に記載の回転コネクタ。 Rotating connector according to claim 1 wherein said wire housing wiring member is directly connected to said terminal member of said FPC and said second surface of said first surface. 前記筐体配線部材の前記第１表面に対し、前記ＦＰＣが水平に接続される
請求項１または２に記載の回転コネクタ。 The rotary connector according to claim 1 or 2 , wherein the FPC is horizontally connected to the first surface of the housing wiring member. 一の前記筐体配線部材の前記配線に複数の前記ＦＰＣが接続される、請求項１から３のいずれか一項に記載の回転コネクタ。 The rotary connector according to any one of claims 1 to 3 , wherein a plurality of the FPCs are connected to the wiring of the housing wiring member. 前記端子部材は、複数のピンが前記第２表面の法線方向に延在するピンヘッダである、請求項１から４のいずれか一項に記載の回転コネクタ。 The rotary connector according to any one of claims 1 to 4 , wherein the terminal member is a pin header in which a plurality of pins extend in the normal direction of the second surface. 前記筐体配線部材には、前記ＦＰＣを位置決めして保持するカシメピンが設けられる、請求項１から５のいずれか１項に記載の回転コネクタ。 The rotary connector according to any one of claims 1 to 5 , wherein the housing wiring member is provided with a caulking pin for positioning and holding the FPC.
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