JP5342866B2 - Rotating connector device - Google Patents

Rotating connector device Download PDF

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JP5342866B2
JP5342866B2 JP2008323380A JP2008323380A JP5342866B2 JP 5342866 B2 JP5342866 B2 JP 5342866B2 JP 2008323380 A JP2008323380 A JP 2008323380A JP 2008323380 A JP2008323380 A JP 2008323380A JP 5342866 B2 JP5342866 B2 JP 5342866B2
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peripheral wall
outer peripheral
wall
inner peripheral
guide
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JP2010148254A (en
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隆彦 三井
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Yazaki Corp
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Description

本発明は、回転コネクタ装置に係り、例えば自動車のステアリング廻りに配置される回転コネクタ装置に関する。   The present invention relates to a rotary connector device, for example, a rotary connector device arranged around a steering of an automobile.

この種の装置としては、特許文献１の回転コネクタ装置が知られている。この回転コネクタ装置は、固定カバーと、固定カバーに回転自在に装着された回転カバーと、固定カバーの外周壁と回転カバーの内周壁とが対向して外周壁と内周壁との間に形成された環状の空間内に収容される複数のフラットハーネスとを備えている。フラットハーネスは、外周壁の入口から空間内に引き込まれ、外周壁に沿って案内されるとともに折り返されてから渦巻き状に巻かれて内周壁の出口から引き出され、両端が固定カバーと回転カバーにそれぞれ設けられた端子と電気的に接続されている。   As this type of device, a rotary connector device of Patent Document 1 is known. This rotary connector device is formed between an outer peripheral wall and an inner peripheral wall with the fixed cover, the rotary cover rotatably mounted on the fixed cover, and the outer peripheral wall of the fixed cover and the inner peripheral wall of the rotary cover facing each other. And a plurality of flat harnesses housed in the annular space. The flat harness is drawn into the space from the inlet of the outer peripheral wall, guided along the outer peripheral wall, folded back, wound in a spiral, and pulled out from the outlet of the inner peripheral wall, and both ends are fixed to the fixed cover and the rotating cover. Each is electrically connected to a provided terminal.

空間内の外周壁の内側には、外周壁と同方向に起立され、外周壁との間でフラットハーネスを案内するガイド壁が設けられている。このガイド壁は、外周壁に沿って延在し、フラットハーネスの長手方向に離間して複数配置されている。各ガイド壁は、フラットハーネスが折り返される折り返し部まで延在して設けられ、各フラットハーネスは、各ガイド壁の先端側の折り返し部で一枚ずつ折り返されて、空間内へ導かれる。   A guide wall is provided on the inner side of the outer peripheral wall in the space so as to stand in the same direction as the outer peripheral wall and guide the flat harness between the outer peripheral wall and the outer peripheral wall. The guide walls extend along the outer peripheral wall, and a plurality of the guide walls are arranged apart from each other in the longitudinal direction of the flat harness. Each guide wall is provided so as to extend to a folded portion where the flat harness is folded, and each flat harness is folded one by one at the folded portion on the tip side of each guide wall and guided into the space.

このような構成によれば、回転カバーが回転することにより、万一フラットハーネスが過大な力で各ガイド壁の先端と干渉して摩耗等を生じた場合でも、各フラットハーネスが損傷する位置が異なるため、ハーネス間の短絡が起こらず、短絡に起因する電装品等の作動不良を防ぐことができる。   According to such a configuration, even if the flat harness is caused to wear due to interference with the tip of each guide wall by excessive force due to rotation of the rotating cover, the position where each flat harness is damaged Since they are different, a short circuit between the harnesses does not occur, and malfunction of electrical components and the like due to the short circuit can be prevented.

特開２００７−２１３９５８号公報JP 2007-213958 A

しかしながら、特許文献１の回転コネクタ装置によれば、複数のガイド壁が周方向に離間させて設けられるため、外周壁の入口から空間内に引き込まれたフラットハーネスの一部は、ハーネス長手方向で入口から最も遠い位置に配置されるガイド壁の先端まで引き伸ばしてから折り返さなければならず、入口から最も近い位置に配置されるガイド壁の先端で折り返されるハーネスと比べると、全長が長くなる。このような全長の長いハーネスは、製造コストの増加や装置自体の大型化等を招く要因となる。   However, according to the rotary connector device of Patent Document 1, since a plurality of guide walls are provided apart from each other in the circumferential direction, a part of the flat harness drawn into the space from the entrance of the outer circumferential wall is in the longitudinal direction of the harness. The length of the guide wall must be extended after being extended to the tip of the guide wall that is located farthest from the entrance, and the overall length is longer than that of a harness that is turned back at the tip of the guide wall that is located closest to the entrance. Such a long-length harness causes an increase in manufacturing cost, an increase in size of the device itself, and the like.

本発明は、フラットハーネスの長さを短くするとともに、複数のフラットハーネスがガイド壁と接触して損傷したときの短絡を防止することができる回転コネクタ装置を提供することを課題とする。   This invention makes it a subject to provide the rotation connector apparatus which can prevent a short circuit when shortening the length of a flat harness and a some flat harness contacts a guide wall, and is damaged.

本発明は、上記課題を解決するため、固定体と、この固定体に回転自在に装着された回転体と、固定体及び回転体の一方に起立された外周壁と他方に起立された内周壁とが対向して外周壁と内周壁との間に形成される環状の空間と、外周壁の入口から空間内に引き込まれ、外周壁に沿って案内されるとともに折り返されてから渦巻き状に巻かれて内周壁の出口から引き出され、両端が固定体及び回転体にそれぞれ設けられた端子と電気的に接続される複数の可橈性のフラットハーネスとを備える回転コネクタ装置において、外周壁及び内周壁と同方向に沿って起立され、少なくとも外周壁の空間側に、入口から引き入れたフラットハーネスを案内する間隙を形成する複数のガイド壁が径方向に配置され、複数のガイド壁はフラットハーネスが折り返される折り返し部まで延在して設けられることを特徴としている。   In order to solve the above-described problems, the present invention provides a fixed body, a rotating body rotatably mounted on the fixed body, an outer peripheral wall standing on one side of the fixed body and the rotating body, and an inner peripheral wall standing on the other side. Is opposed to the annular space formed between the outer peripheral wall and the inner peripheral wall, and is drawn into the space from the inlet of the outer peripheral wall, guided along the outer peripheral wall, folded back, and then spirally wound. In a rotary connector device comprising a plurality of flexible flat harnesses that are pulled out from the outlet of the inner peripheral wall and electrically connected to terminals provided at both ends of the fixed body and the rotary body, respectively, A plurality of guide walls, which stand up along the same direction as the peripheral wall and form a gap for guiding the flat harness drawn from the entrance at least in the space side of the outer peripheral wall, are arranged in the radial direction. Ri is characterized in that it is provided to extend to the folded portion to be returned.

このような構成によれば、空間内に引き込まれた複数のフラットハーネスは、それぞれガイド壁で仕切られて形成される間隙に一枚ずつ分かれて案内され、各ガイド壁の先端側の折り返し部を経由して折り返される。このため、固定体と回転体が相対的に回転することにより、フラットハーネスがガイド壁の先端と干渉して損傷したとしても、各フラットハーネスは互いにガイド壁で仕切られて配置されるため、ハーネス間の短絡を防ぐことができる。また、各ガイド壁は、外周壁の内側に径方向で順次配置されるため、周方向に離間させて配置される従来のガイド壁と比べて、フラットハーネスが折り返し部まで引き出される長さを短くすることができる。これにより、使用するハーネスの全長が短くなるため、製造コストの増加を抑制し、構造の簡単化、省スペース化を図ることができる。   According to such a configuration, the plurality of flat harnesses drawn into the space are guided separately one by one in the gaps formed by being partitioned by the guide walls, and the folded portions on the front end side of the respective guide walls are guided. Wrap through. For this reason, even if the flat harness is damaged by interference with the tip of the guide wall due to the relative rotation of the fixed body and the rotating body, each flat harness is partitioned and arranged by the guide wall. Short circuit between can be prevented. In addition, since each guide wall is sequentially arranged in the radial direction inside the outer peripheral wall, the length that the flat harness is pulled out to the folded portion is shorter than a conventional guide wall that is spaced apart in the circumferential direction. can do. Thereby, since the full length of the harness to be used becomes short, the increase in manufacturing cost can be suppressed and the structure can be simplified and the space can be saved.

この場合において、ガイド壁は、外周壁に近い位置に設けられるほど、折り返し部まで延在する延在方向の先端の位置が、延在方向にずらして設けられるものとする。このような構成によれば、各フラットハーネスが折り返し部で損傷したとしても、その損傷する位置がより離れた位置となるため、より確実にハーネス間の短絡を防ぐことができる。   In this case, as the guide wall is provided at a position closer to the outer peripheral wall, the position of the tip in the extending direction that extends to the folded portion is shifted in the extending direction. According to such a configuration, even if each flat harness is damaged at the turn-up portion, the damaged position is further away, so that a short circuit between the harnesses can be prevented more reliably.

また、内周壁の空間側には、フラットハーネスを出口へ向けて案内する間隙を形成する複数のガイド壁が、内周壁と同方向に沿って起立されるとともに、径方向に配置されているものとする。このように内周壁におけるフラットハーネスの引き出し側においても、外周壁におけるフラットハーネスの引き入れ側と同様に複数のガイド壁を設けることにより、引き入れ側と同様の作用効果を得ることができる。   In addition, on the space side of the inner peripheral wall, a plurality of guide walls forming gaps for guiding the flat harness toward the outlet are erected along the same direction as the inner peripheral wall and are arranged in the radial direction And As described above, by providing a plurality of guide walls similarly to the drawing-in side of the flat harness on the outer peripheral wall on the drawing-out side of the flat harness on the inner peripheral wall, the same operational effects as those on the drawing-in side can be obtained.

本発明によれば、フラットハーネスの長さを短くしても、複数のフラットハーネスがガイド壁と接触して損傷したときの短絡を防止することができる。   According to the present invention, even when the length of the flat harness is shortened, it is possible to prevent a short circuit when a plurality of flat harnesses are in contact with the guide wall and are damaged.

以下、本発明を適用してなる実施の形態について図面を参照して説明する。図１は、本発明に係る回転コネクタ装置の一実施形態を示す分解斜視図である。図２は、図１の固定カバーと回転カバーを裏面側から見た状態を示す斜視図である。図３は、固定カバーのガイド壁の間隙にフラットハーネスが配索された状態を示す平面図である。図４は、本発明に係る回転コネクタ装置の固定カバーのガイド壁の間隙にフラットハーネスを配索した状態を示す要部斜視図である。なお、本実施形態では、回転コネクタ装置１を自動車のステアリング廻りに配置する例について説明する。   Hereinafter, embodiments to which the present invention is applied will be described with reference to the drawings. FIG. 1 is an exploded perspective view showing an embodiment of a rotary connector device according to the present invention. FIG. 2 is a perspective view showing a state where the fixed cover and the rotating cover of FIG. 1 are viewed from the back side. FIG. 3 is a plan view showing a state in which the flat harness is routed in the gap between the guide walls of the fixed cover. FIG. 4 is a main part perspective view showing a state in which a flat harness is routed in the gap between the guide walls of the fixed cover of the rotary connector device according to the present invention. In the present embodiment, an example in which the rotary connector device 1 is arranged around the steering of an automobile will be described.

本実施形態の回転コネクタ装置１は、図１（表面側から見た図）に示すように、固定カバー（固定体）２、回転カバー（回転体）３、固定蓋４、回転筒５及び可橈性の３枚のフラットハーネス６を備えて構成される。固定カバー２、回転カバー３、固定蓋４、回転筒５は、いずれも例えば合成樹脂製の成形品で形成されている。フラットハーネス６は、固定カバー２と回転カバー３と固定蓋４とで囲まれた環状の空間（ドーナツ状）内に重ねて渦巻き状に巻かれて収容されている。   As shown in FIG. 1 (viewed from the front side), the rotary connector device 1 according to the present embodiment includes a fixed cover (fixed body) 2, a rotary cover (rotary body) 3, a fixed lid 4, a rotary cylinder 5, and a movable cylinder. It is configured with three inertial flat harnesses 6. The fixed cover 2, the rotating cover 3, the fixed lid 4, and the rotating cylinder 5 are all formed of a molded product made of synthetic resin, for example. The flat harness 6 is accommodated by being wound spirally in an annular space (doughnut shape) surrounded by the fixed cover 2, the rotating cover 3, and the fixed lid 4.

固定カバー２の外周縁には、裏面側に起立する外周壁７が全周に渡って形成され、この外周壁７の内側（空間側）には、図２に示すように空間内に引き込まれたフラットハーネスを案内する間隙を形成するガイド壁８，９が順次径方向に配置されている。本実施形態では、ガイド壁８，９が空間内で径方向に配置され、外周壁７とガイド壁８との間の間隙、及び、ガイド壁８とガイド壁９との間の間隙に、それぞれフラットハーネス６を導いて折り返している点を特徴としている。   An outer peripheral wall 7 standing on the back surface side is formed on the outer peripheral edge of the fixed cover 2 over the entire circumference, and the inner side (space side) of the outer peripheral wall 7 is drawn into the space as shown in FIG. Guide walls 8 and 9 forming a gap for guiding the flat harness are sequentially arranged in the radial direction. In the present embodiment, the guide walls 8 and 9 are arranged radially in the space, and the gap between the outer peripheral wall 7 and the guide wall 8 and the gap between the guide wall 8 and the guide wall 9 are respectively It is characterized in that the flat harness 6 is guided and folded.

図１，２に示すように、固定カバー２は、中央の孔部１１を有する円板状の壁部１２と、円板状の壁部１２の外周端に直交して一体的に続く外周壁７とを備え、円板状の壁部１２は外周寄りのリブ１３（図１）を有し、リブ１３に回転カバー３の外周壁１４の先端内面が回転自在に係合する。   As shown in FIGS. 1 and 2, the fixed cover 2 includes a disc-shaped wall portion 12 having a central hole portion 11, and an outer peripheral wall that integrally extends orthogonally to the outer peripheral end of the disc-shaped wall portion 12. 7, the disk-shaped wall portion 12 has a rib 13 (FIG. 1) closer to the outer periphery, and the inner surface of the distal end of the outer peripheral wall 14 of the rotary cover 3 is rotatably engaged with the rib 13.

固定カバー２の外周壁７にはコネクタハウジング１５が一体的に設けられている。コネクタハウジング１５内には複数の雄端子（図示せず）が設けられ、雄端子の基端が小さな回路基板（図示せず）を介して各フラットハーネス６の一端部１６に接続される。コネクタハウジング１５と端子とでコネクタが構成される。なお、雄端子に代えて雌端子等を用いることもできる。   A connector housing 15 is integrally provided on the outer peripheral wall 7 of the fixed cover 2. A plurality of male terminals (not shown) are provided in the connector housing 15, and the base ends of the male terminals are connected to one end 16 of each flat harness 6 through a small circuit board (not shown). The connector housing 15 and the terminals constitute a connector. A female terminal or the like can be used instead of the male terminal.

図２，３に示すように、固定カバー２のコネクタハウジング１５に続く水平な支持壁１７の裏面にはハーネス配索用の凹溝１８が設けられている。固定カバー２の外周壁７の内側には、外周壁７と同方向に起立して外周壁７の内面と間隔をあけて内面に沿って延在する環状の壁部１９が設けられている。   As shown in FIGS. 2 and 3, a recessed groove 18 for harness wiring is provided on the back surface of the horizontal support wall 17 following the connector housing 15 of the fixed cover 2. On the inner side of the outer peripheral wall 7 of the fixed cover 2, an annular wall portion 19 is provided that stands in the same direction as the outer peripheral wall 7 and extends along the inner surface with a space from the inner surface of the outer peripheral wall 7.

環状の壁部１９が連なる前側にはガイド壁９が形成され、環状の壁部１９と同じ曲率半径で湾曲して形成されている。ここで、前側とはハーネス挿通方向の前側（図２，３の時計回転方向）をいう。   A guide wall 9 is formed on the front side where the annular wall portion 19 is continuous, and is curved with the same radius of curvature as the annular wall portion 19. Here, the front side refers to the front side in the harness insertion direction (the clockwise direction in FIGS. 2 and 3).

ガイド壁９と外周壁７の内面との間には、外周壁７及びガイド壁９と同方向に沿って起立する環状の短いガイド壁８が設けられ、このガイド壁８は外周壁７とガイド壁９との曲率半径の略半分の曲率半径で湾曲して形成されている。ガイド壁８と外周壁７との間、及び、ガイド壁８とガイド壁９との間には、それぞれフラットハーネス６を挿通させる隙間Ｙ，Ｚ（図４）が設けられ、この隙間Ｙ，Ｚは各々支持壁１７の凹溝１８に続いている。凹溝１８を通じて空間内に引き込まれた二枚のフラットハーネスは、重なった状態で折り曲げられてから、図４に示すように、それぞれ隙間Ｙ，Ｚに挿通される。そして、各ガイド壁８，９の前側の端部（以下、折り返し端部という。）を経由して各フラットハーネス６が折り返された状態で、一枚ずつ空間の内側へ導かれる。 Between the guide wall 9 and the inner surface of the outer peripheral wall 7, there is provided an annular short guide wall 8 that stands up in the same direction as the outer peripheral wall 7 and the guide wall 9. It is curved and formed with a radius of curvature that is approximately half of the radius of curvature with the wall 9. Between the guide wall 8 and the outer peripheral wall 7 and between the guide wall 8 and the guide wall 9, gaps Y and Z (FIG. 4) through which the flat harness 6 is inserted are respectively provided. Each follow a concave groove 18 in the support wall 17. The two flat harnesses drawn into the space through the concave groove 18 are bent in an overlapping state and then inserted into the gaps Y and Z, respectively, as shown in FIG. Then, the flat harnesses 6 are led back to the inside of the space one by one in a state where the flat harnesses 6 are folded back via the front end portions (hereinafter referred to as folded-back end portions ) of the guide walls 8 and 9.

固定カバー２の外周壁７には、固定蓋４（図１）の低い外周壁２１の係止突起２２を係合させる係止枠部２３や、自動車のステアリングシャフト（図示せず）の外側のコンビスイッチ（固定構造体）にねじ固定させるブラケット２４が設けられている。固定蓋４の中央の孔部２５を有する円板状の壁部２６の外周端には、凹溝１８を塞ぐ板部２７が突設されている。   On the outer peripheral wall 7 of the fixed cover 2, there is a locking frame portion 23 that engages a locking projection 22 of the lower outer peripheral wall 21 of the fixed lid 4 (FIG. 1), and an outer side of an automobile steering shaft (not shown). A bracket 24 is provided for screwing the combination switch (fixed structure). A plate portion 27 that closes the concave groove 18 protrudes from the outer peripheral end of the disk-shaped wall portion 26 having the central hole portion 25 of the fixed lid 4.

回転カバー３は、中央の孔部２８を有する円板状の壁部２９と、円板状の壁部２９の外周端に直交して続く低い外周壁１４と、孔部２８の内周端に直交して筒状に長く突出した内周壁３０とを備え、内周壁３０の空間側には、壁部３１（図２）が内周壁３０の外面と間隔をあけて内周壁３０と同方向に円環状で起立して設けられている。壁部３１の前側にはガイド壁３２が連なって形成されている。ガイド壁３２は環状の壁部３１と同じ曲率半径で湾曲して形成されている。ここで、前側とはハーネス挿入方向の後側（図２の時計回転方向）をいう。   The rotary cover 3 includes a disc-shaped wall portion 29 having a central hole portion 28, a lower outer peripheral wall 14 that extends orthogonally to the outer peripheral end of the disc-shaped wall portion 29, and an inner peripheral end of the hole portion 28. And an inner peripheral wall 30 projecting long in a cylindrical shape at right angles, and on the space side of the inner peripheral wall 30, a wall portion 31 (FIG. 2) is spaced from the outer surface of the inner peripheral wall 30 in the same direction as the inner peripheral wall 30. It is provided upright in an annular shape. A guide wall 32 is formed continuously on the front side of the wall portion 31. The guide wall 32 is curved with the same radius of curvature as the annular wall portion 31. Here, the front side means the rear side in the harness insertion direction (clockwise rotation direction in FIG. 2).

ガイド壁３２と内周壁３０との間には、内周壁３０の外面と間隔をあけて内周壁３０と同方向に起立する環状の短いガイド壁３３が設けられている。ガイド壁３３と内周壁３０の外面との間、及び、ガイド壁３３とガイド壁３２との間には、それぞれフラットハーネス６を挿通させる隙間が設けられ、これらの隙間は、内周壁３０と壁部３１との間の隙間３４を介して、回転カバー３の出口となるコネクタハウジング３５（図１）に続いている。ここで、固定カバー２の各ガイド壁から空間内へのハーネス導入方向と、回転カバー３の各ガイド壁から空間内へのハーネス導入方向は同じである。   Between the guide wall 32 and the inner peripheral wall 30, an annular short guide wall 33 that stands in the same direction as the inner peripheral wall 30 is provided with a space from the outer surface of the inner peripheral wall 30. Gaps through which the flat harness 6 is inserted are provided between the guide wall 33 and the outer surface of the inner peripheral wall 30, and between the guide wall 33 and the guide wall 32, and these gaps are formed between the inner peripheral wall 30 and the wall. It continues to the connector housing 35 (FIG. 1) which becomes the exit of the rotation cover 3 via the gap 34 between the portions 31. Here, the harness introduction direction from each guide wall of the fixed cover 2 into the space and the harness introduction direction from each guide wall of the rotary cover 3 into the space are the same.

本実施形態のように二枚のフラットハーネスを用いる場合、ガイド壁３３と内周壁３０の外面との隙間、ガイド壁３３とガイド壁３２との隙間には、それぞれ一枚ずつフラットハーネス６が挿通され、各隙間を挿通したフラットハーネス６は、壁部３１と内周壁３０との間の隙間を介して引き出される。   When two flat harnesses are used as in the present embodiment, one flat harness 6 is inserted into each of the gap between the guide wall 33 and the outer surface of the inner peripheral wall 30 and the gap between the guide wall 33 and the guide wall 32. Then, the flat harness 6 inserted through each gap is drawn through the gap between the wall portion 31 and the inner peripheral wall 30.

回転カバー３の円板状の壁部２９に設けられたコネクタハウジング３５内には、複数の雄端子（図示せず）が配設され、雄端子が回路基板（図示せず）を介して各フラットハーネス６の他端部３８に接続される。回路基板は回転カバー３の円板状の壁部２９との間で小さなサブカバー（図示せず）で覆われて絶縁保護される。コネクタハウジング３５と端子とでコネクタが構成される。なお、雄端子に代えて雌端子等を用いることもできる。   A plurality of male terminals (not shown) are disposed in the connector housing 35 provided on the disk-shaped wall portion 29 of the rotary cover 3, and the male terminals are connected to each other via a circuit board (not shown). The other end 38 of the flat harness 6 is connected. The circuit board is covered and insulated and protected by a small sub-cover (not shown) between the disk-shaped wall portion 29 of the rotary cover 3. The connector housing 35 and the terminals constitute a connector. A female terminal or the like can be used instead of the male terminal.

回転カバー３の円板状の壁部２９には、自動車のステアリングホイル（回動体）と連結するための連結ピン３９が設けられている。回転カバー３の内周壁３０の内面には、回転筒５の係止枠部４０に係合する係止突起４１が設けられている。回転筒５はターンキャンセラとも呼称され、ステアリングシャフト（図示せず）の外周に位置し、回転カバー３と一体的に回転する。取付状態で回転カバー３は上側に位置し、固定カバー２は下側に位置する。   A connecting pin 39 for connecting to a steering wheel (rotating body) of an automobile is provided on the disk-shaped wall portion 29 of the rotating cover 3. On the inner surface of the inner peripheral wall 30 of the rotating cover 3, a locking projection 41 that engages with the locking frame portion 40 of the rotating cylinder 5 is provided. The rotating cylinder 5 is also called a turn canceller, and is positioned on the outer periphery of a steering shaft (not shown) and rotates integrally with the rotating cover 3. In the mounted state, the rotary cover 3 is positioned on the upper side, and the fixed cover 2 is positioned on the lower side.

二枚のフラットハーネス６（図１）は、固定カバー２のコネクタハウジング１５内の端子に接続される一端部１６と、一端部１６に続いて固定カバー２の凹溝１８（図２）に沿う真直な部分４２と、真直な部分４２から固定カバー２の外周壁７の内面に沿って案内される方向に捻られ、図１の例で反時計回りに大径に一周する外周部分４３と、外周部分４３から反転、つまり折り返して（折り返し部分を符号４４で示す）、時計回りに小径に一周する内周（内側）部分４５と、内周部分４５から立ち上げられて、回転カバー３のコネクタハウジング３５内の端子に接続される部分（接続部）３８を有して、略環状ないし略螺旋状に構成される。   The two flat harnesses 6 (FIG. 1) are connected to one end portion 16 connected to a terminal in the connector housing 15 of the fixed cover 2 and the concave groove 18 (FIG. 2) of the fixed cover 2 following the one end portion 16. A straight portion 42, and an outer peripheral portion 43 that is twisted in a direction guided from the straight portion 42 along the inner surface of the outer peripheral wall 7 of the fixed cover 2, and rotates around the large diameter counterclockwise in the example of FIG. Inverted from the outer peripheral portion 43, that is, folded (indicated by reference numeral 44), is rotated from the inner peripheral portion 45 and the inner peripheral (inner) portion 45 that makes one round clockwise, and the connector of the rotary cover 3. It has a portion (connecting portion) 38 connected to a terminal in the housing 35 and is configured in a substantially annular or substantially spiral shape.

各フラットハーネス６の外周部分４３が固定カバー２の各ガイド壁８，９（図２）に沿って独立して配索され、各フラットハーネス６の内周部分４５が回転カバー３の各ガイド壁３２，３３に沿って独立して配索される。図４は、固定カバー２の各ガイド壁８，９から各フラットハーネス６が導入されつつ折り返された（折り返し部を符号４６で示す）状態を示している。本実施形態では、ガイド壁８の前側の折り返し端部の位置は、ガイド壁９の折り返し端部の位置よりもハーネス長手方向（図４の右側）にずらして配置されている。 The outer peripheral portion 43 of each flat harness 6 is routed independently along each guide wall 8, 9 (FIG. 2) of the fixed cover 2, and the inner peripheral portion 45 of each flat harness 6 is each guide wall of the rotary cover 3. 32 and 33 are routed independently. FIG. 4 shows a state in which each flat harness 6 is folded back from the respective guide walls 8 and 9 of the fixed cover 2 (the folded portion is indicated by reference numeral 46). In the present embodiment, the position of the folded end portion on the front side of the guide wall 8 is shifted from the position of the folded end portion of the guide wall 9 in the harness longitudinal direction (right side in FIG. 4).

次に、このようにして構成される回転コネクタ装置の動作を説明する。   Next, the operation of the rotary connector device configured as described above will be described.

ステアリングホイル（図示せず）の回転操作に伴って回転カバー３が回転し、回転カバー３と一体的にフラットハーネス６の内周部分４５が回動する。図１でフラットハーネス６の内周部分４５が時計回りに回転した場合は、折り返し部分４４が外周部分４３とともに同方向にほぼ半分の距離で移動し、内周部分４５が反時計回りに回転した場合は、折り返し部分４４が外周部分４３とともに同方向にほぼ半分の距離で移動して、ステアリングホイルの回転を吸収する。   As the steering wheel (not shown) rotates, the rotating cover 3 rotates, and the inner peripheral portion 45 of the flat harness 6 rotates integrally with the rotating cover 3. In FIG. 1, when the inner peripheral portion 45 of the flat harness 6 is rotated clockwise, the folded portion 44 is moved in the same direction along the outer peripheral portion 43 at a half distance, and the inner peripheral portion 45 is rotated counterclockwise. In this case, the folded portion 44 moves with the outer peripheral portion 43 in the same direction at a distance of almost half, and absorbs the rotation of the steering wheel.

図４において、万一各フラットハーネス６が過大な力で固定カバー２の各ガイド壁８，９の前側の折り返し端部と接触し、該折り返し端部を支点として反転方向に強く引っ張られたり、繰り返しの屈曲等により各フラットハーネス６が各ガイド壁８，９の折り返し端部と干渉して摩耗等を生じた場合、各フラットハーネス６は鎖線４７の位置で損傷を起こす。本実施形態では、ガイド壁８，９が外周壁７に対して径方向に配置されており、ハーネス６１とハーネス６２はガイド壁８で互いに仕切られているため、両ハーネスの短絡が起こらず、短絡に起因するホーンやオートクルーズコントロール等の車両システムの誤動作を確実に防止することができる。 4, event in contact with the front side of the folded end portion of the guide walls 8, 9 of the fixed cover 2 at each flat harness 6 is excessive force, or strongly pulled reversing direction said folded end portion as a fulcrum, When each flat harness 6 interferes with the folded end portions of the guide walls 8 and 9 due to repeated bending or the like and wears or the like, each flat harness 6 is damaged at the position of the chain line 47. In this embodiment, the guide walls 8, 9 are disposed radially with respect to the outer peripheral wall 7, the harness 61 and the harness 6 2 because it has been separated from each other by the guide wall 8, a short circuit of both harness occur Therefore, it is possible to reliably prevent malfunctions of the vehicle system such as a horn and auto cruise control due to a short circuit.

また、本実施形態によれば、凹溝１８を介して空間内に引き込まれたハーネス６１，６２が、ガイド壁８，９の折り返し端部まで引き出される長さはほぼ同じであるから、周方向に複数のガイド壁を離間させて設ける従来の構成と比べて、フラットハーネス６の長さを短くすることができる。 Further, according to the present embodiment, the lengths of the harnesses 6 1 , 6 2 drawn into the space through the concave groove 18 to the folded ends of the guide walls 8, 9 are substantially the same, The length of the flat harness 6 can be shortened compared to the conventional configuration in which a plurality of guide walls are provided apart from each other in the circumferential direction.

また、本実施形態によれば、ガイド壁８の前側の折り返し端部の位置は、ガイド壁９の折り返し端部の位置よりもハーネス長手方向にずらして配置しているため、それだけフラットハーネス６の損傷位置の距離が長くなり、フラットハーネス６が折り返し端部と接触して損傷しても、より確実に短絡を防ぐことができる。以上述べたような作用効果は、回転カバー３側のガイド壁３２，３３においても同様である。 Further, according to the present embodiment, the position of the folded-back end portion on the front side of the guide wall 8 is shifted from the position of the folded-back end portion of the guide wall 9 in the harness longitudinal direction. Even if the distance of the damage position becomes long and the flat harness 6 comes into contact with the folded end portion and is damaged, a short circuit can be prevented more reliably. The effects as described above are the same in the guide walls 32 and 33 on the rotary cover 3 side.

また、上記実施形態では、二枚のフラットハーネス６を用いた例を説明したが、フラットハーネス６を三枚ないしそれ以上用いる場合は、フラットハーネス６の枚数と同じ数、或いはそれ以上の数のガイド壁を外周壁７の内側、内周壁３０の外側に径方向で配置して、一枚ずつハーネスを挿通させるための間隙を設けることにより、上記と同様の作用効果を得ることができる。なお、フラットハーネス６の枚数よりも多い数のガイド壁を設けておけば、車両グレード等に応じて回路数が増えた場合でも共通で使用することができる。   Moreover, in the said embodiment, although the example using two flat harnesses 6 was demonstrated, when using three or more flat harnesses 6 or more, it is the same number as the number of flat harnesses 6 or more. By arranging the guide walls in the radial direction on the inner side of the outer peripheral wall 7 and the outer side of the inner peripheral wall 30 and providing gaps for inserting the harnesses one by one, the same effect as described above can be obtained. If a larger number of guide walls than the number of flat harnesses 6 are provided, they can be used in common even when the number of circuits increases according to the vehicle grade or the like.

また、上記実施形態においては、ガイド壁８，９を径方向に配置する例を説明したが、これに加えて、例えば、図２のガイド壁９を周方向の途中で切り欠いて離間させ、複数のガイド壁９からなるように構成してもよい。このようにすれば、複数のガイド壁８を設けなくても、フラットハーネス６の長さをより短くして、三枚以上のフラットハーネス６の短絡を防ぐことができる。また、フラットハーネス６の長さは長くなるが、例えばガイド壁８，９の前側に周方向で短い別のガイド壁を離間させて設けることもできる。   Moreover, in the said embodiment, although the example which arrange | positions the guide walls 8 and 9 to radial direction was demonstrated, in addition to this, for example, the guide wall 9 of FIG. 2 is notched and spaced apart in the middle of the circumferential direction, You may comprise so that it may consist of a some guide wall 9. FIG. In this way, even if the plurality of guide walls 8 are not provided, the length of the flat harness 6 can be shortened to prevent a short circuit between three or more flat harnesses 6. Moreover, although the length of the flat harness 6 becomes long, for example, another guide wall that is short in the circumferential direction can be provided separately on the front side of the guide walls 8 and 9.

また、上記実施形態においては、固定カバー２と回転カバー３にそれぞれ各ガイド壁８，９，３２，３３を設けたが、固定カバー２のみ、或いは回転カバー３のみに各ガイド壁を設けることも有効である。   In the above embodiment, the guide walls 8, 9, 32, and 33 are provided on the fixed cover 2 and the rotary cover 3, respectively. However, the guide walls may be provided only on the fixed cover 2 or only on the rotary cover 3. It is valid.

また、上記実施形態においては、固定カバー２に外周壁７を設け、回転カバー３に内周壁３０を設けたが、例えば固定カバー２に内周壁３０を設け、回転カバー３に外周壁７を設ける等して、上記固定カバー２を回転自在とし、上記回転カバー３を固定させることも可能である。両カバー２，３の回転は相対的なものだからである。   In the above embodiment, the outer peripheral wall 7 is provided on the fixed cover 2 and the inner peripheral wall 30 is provided on the rotary cover 3. For example, the inner peripheral wall 30 is provided on the fixed cover 2, and the outer peripheral wall 7 is provided on the rotary cover 3. For example, the fixed cover 2 can be freely rotated, and the rotary cover 3 can be fixed. This is because the rotation of the covers 2 and 3 is relative.

また、上記実施形態においては、自動車のステアリング廻りに配置する回転コネクタ装置１として説明したが、ステアリング以外の他の回転部分に配置して、回転を吸収しつつ回転部分への給電等を行わせるために適用することも可能である。   Moreover, in the said embodiment, although demonstrated as the rotation connector apparatus 1 arrange | positioned around the steering | stirring of a motor vehicle, it arrange | positions in rotation parts other than a steering wheel, and it supplies electric power etc. to a rotation part, absorbing rotation. It is also possible to apply for this purpose.

本発明を適用してなる回転コネクタ装置の一実施形態を示す分解斜視図である。It is an exploded perspective view showing one embodiment of a rotation connector device to which the present invention is applied. 図１の固定カバーと回転カバーを裏面側から見た状態を示す斜視図である。It is a perspective view which shows the state which looked at the fixed cover and rotation cover of FIG. 1 from the back surface side. 本発明を適用してなる回転コネクタ装置の固定カバーのガイド壁の間隙にフラットハーネスを配索した状態を示す平面図である。It is a top view which shows the state which wired the flat harness in the clearance gap between the guide walls of the fixed cover of the rotation connector apparatus to which this invention is applied. 本発明を適用してなる回転コネクタ装置の固定カバーのガイド壁の間隙にフラットハーネスを配索した状態を示す要部斜視図である。It is a principal part perspective view which shows the state which wired the flat harness in the clearance gap between the guide walls of the fixed cover of the rotation connector apparatus formed by applying this invention.

符号の説明Explanation of symbols

１ 回転コネクタ装置
２ 固定カバー
３ 回転カバー
６ フラットハーネス
７ 外周壁
８，９，３２，３３ ガイド壁
３０ 内周壁
１９，３１ 壁部 DESCRIPTION OF SYMBOLS 1 Rotation connector apparatus 2 Fixed cover 3 Rotation cover 6 Flat harness 7 Outer wall 8, 9, 32, 33 Guide wall 30 Inner wall 19, 31 Wall part

Claims (3)

固定体と、
該固定体に回転自在に装着された回転体と、
前記固定体及び前記回転体の一方に起立された外周壁と他方に起立された内周壁とが対向して前記外周壁と前記内周壁との間に形成される環状の空間と、
前記外周壁の入口から前記空間内に引き込まれ、前記外周壁に沿って案内されるとともに折り返されてから渦巻き状に巻かれて前記内周壁の出口から引き出され、両端が前記固定体及び前記回転体にそれぞれ設けられた端子と電気的に接続される複数の可橈性のフラットハーネスとを備える回転コネクタ装置において、
前記外周壁及び前記内周壁と同方向に沿って起立され、少なくとも前記外周壁の前記空間側に、前記入口から引き入れた前記フラットハーネスを案内する間隙を形成する複数のガイド壁が径方向に配置され、該複数のガイド壁は前記フラットハーネスが折り返される折り返し部まで延在して設けられることを特徴とする回転コネクタ装置。 A fixed body,
A rotating body rotatably mounted on the fixed body;
An annular space formed between the outer peripheral wall and the inner peripheral wall, with the outer peripheral wall standing on one of the fixed body and the rotating body and the inner peripheral wall standing on the other facing each other;
It is drawn into the space from the inlet of the outer peripheral wall, guided along the outer peripheral wall, folded back, wound in a spiral shape, drawn out from the outlet of the inner peripheral wall, and both ends of the fixed body and the rotation In a rotary connector device comprising a plurality of flexible flat harnesses that are electrically connected to terminals provided on the body,
A plurality of guide walls that are erected along the same direction as the outer peripheral wall and the inner peripheral wall and that are arranged at least on the space side of the outer peripheral wall to form a gap for guiding the flat harness drawn from the inlet are arranged in the radial direction. The rotary connector device is characterized in that the plurality of guide walls are provided to extend to a folded portion where the flat harness is folded. 前記ガイド壁は、前記外周壁に近い位置に設けられるほど、前記折り返し部まで延在する延在方向の先端の位置が、該延在方向にずらして設けられることを特徴とする請求項１に記載の回転コネクタ装置。   2. The guide wall according to claim 1, wherein as the guide wall is provided at a position closer to the outer peripheral wall, the position of the tip in the extending direction extending to the folded portion is shifted in the extending direction. The rotary connector device according to the description. 前記内周壁の前記空間側には、前記フラットハーネスを前記出口へ向けて案内する間隙を形成する複数のガイド壁が前記内周壁と同方向に沿って起立されるとともに、径方向に配置されていることを特徴とする請求項１又は２のいずれかに記載の回転コネクタ装置。   On the space side of the inner peripheral wall, a plurality of guide walls forming gaps for guiding the flat harness toward the outlet are erected along the same direction as the inner peripheral wall, and are arranged in the radial direction. The rotary connector device according to claim 1, wherein the rotary connector device is provided.
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