JP4115261B2 - Rotating connector - Google Patents

Rotating connector Download PDF

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Publication number
JP4115261B2
JP4115261B2 JP2002355877A JP2002355877A JP4115261B2 JP 4115261 B2 JP4115261 B2 JP 4115261B2 JP 2002355877 A JP2002355877 A JP 2002355877A JP 2002355877 A JP2002355877 A JP 2002355877A JP 4115261 B2 JP4115261 B2 JP 4115261B2
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Japan
Prior art keywords
transmission line
damping plate
belt
shaped
case
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JP2002355877A
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Japanese (ja)
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JP2004192832A (en
Inventor
朋広 喜多村
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THE FURUKAW ELECTRIC CO., LTD.
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THE FURUKAW ELECTRIC CO., LTD.
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Description

【0001】
【発明の属する技術分野】
本発明は、相対的に回転する二部材間で電気、光信号あるいはこれら双方の信号等を電送する回転コネクタに関する。
【0002】
【従来の技術】
相対的に回転する二部材間で電気、光信号あるいはこれら双方の信号等を電送する回転コネクタとして、例えば、自動車のステアリング装置に設けて車体側とエアバッグとを電気的に接続し、エアバッグの起動に使用する回転コネクタが知られている。
【0003】
この回転コネクタは、互いに相対回転自在に組み合わされる回転ケースと固定ケースとによって形成される環状の空間に渦巻き状に巻回した帯状伝送線が収容されている。この帯状伝送線は、巻き締まりや巻き緩みによる回転ケースと固定ケースとの相対回転を実現するため、前記環状の空間にルーズに収容されている。
【0004】
従って、上記回転コネクタは、自動車の走行に伴って前記帯状伝送線が回転軸方向及び回転軸に直交する方向に振動し、両ケースと衝突する結果、いわゆる叩き音(踊り音)と呼ばれる異音が発生する。このような異音は、自動車の車内環境を悪化させる。かかる異音の発生を抑制するため、図10に記載されたような回転コネクタが考えられている(特許文献1参照)。
【0005】
すなわち、図10の回転コネクタは、互いに相対回転自在に組み合わされ、内部に環状の空間Sが形成される回転ケース2及び固定ケース3を有する回転コネクタにおいて、一端が前記回転ケース2に、他端が前記固定ケース3に、それぞれ接続される帯状伝送線6が前記環状の空間に収容され、前記環状の空間に配置された帯状伝送線6の振動を抑制するリング状の制振板7を有するものである。制振板7は、複数箇所に周方向に沿って弾性体となるばね部7aを設けて、帯状伝送線6の側面を押圧するようにしている。
【0006】
ばね部7aの作用により、制振板7が帯状伝送線6の側面を押圧しているため、自動車の走行に伴って帯状伝送線6が回転軸方向及び回転軸に直交する方向の振動を抑えることができる。そのため、帯状伝送線6が回転ケース2、固定ケース3に衝突することがないため、叩き音(踊り音)の発生を抑制することができる。また、ばね部7aを調整することにより、制振板7の押圧力を適切に設定することができるため、回転ケース2と固定ケース3の相対回転をスムーズに行うことができる。
【0007】
【特許文献1】
特許第3311703号公報
【0008】
【発明が解決しようとする課題】
しかし、図10のような回転コネクタでは以下のような問題があった。すなわち、図10の回転コネクタに用いられるリング状をなす制振板7が帯状伝送線6に接する面は図11のように平面構造をなしている。そのため、帯状伝送線6の側面の全面を制振板7で押圧することになり、回転ケース2と固定ケース3の相対回転に際して摺音が発生するという問題があった。そのため、叩き音(踊り音)の発生を抑制することができても、摺音が発生することになるため、異音発生防止の根本的な解決を図ることができない。そのため、車内環境を依然として解消しにくいという問題があった。
【0009】
本発明は上記の点に鑑みてなされたもので、図10のような回転コネクタの回転ケースと固定ケースの相対回転に際する摺音の発生を抑制することを目的とする。
【0010】
【課題を解決するための手段】
上記した目的を達成するために、本発明は互いに相対回転自在に組み合わされ、内部に環状の空間が形成される回転ケース及び固定ケース、一端が前記回転ケースに、他端が前記固定ケースに、それぞれ接続し、前記状の空間に収容される帯状伝送線、前記環状の空間に配置された前記帯状伝送線の振動を抑制するリング状の制振板を有する回転コネクタにおいて、前記制振板は環状の空間内の回転ケースの上フランジと帯状伝送線との間に配置され、その半径方向略中央の複数箇所に周方向に沿ってばね部が設けられており、さらに前記制振板の前記帯状伝送線の側面と接する部位に多数の穴、または、凹凸が設けられることにより、前記帯状伝送線の側面はその全体が接触しない状態で前記制振板により押圧されていることを特徴とする。
【0011】
好ましくは、前記固定ケースは発泡体層からなるベースプレートを有し、前記固定ケースの少なくとも前記帯状伝送線側に防振シートが貼付され、前記ばね部が制振板の板面から回転ケースの上フランジ側に向かってアーチ状に突出形成され、その頂部が幅狭に形成されており、前記制振板は回転ケースの内筒軸部に形成した係合部が係合する切欠き及び上フランジに形成した係合孔と係合する突起が形成されているようにする。
【0012】
【発明の実施の形態】
以下、本発明の一実施形態を図1乃至図9に基づいて詳細に説明する。回転コネクタ1は、図1に示すように、回転ケース2、固定ケース3、帯状伝送線6及び制振板7を有している。回転ケース2は、帯状伝送線6の一端(内端)が接続される内筒軸部2aと上フランジ2bとを有している。
【0013】
固定ケース3は、図1に示すように、外筒4とベースプレート5とを有し、回転ケース2と相対回転自在に組み合わされ、内部に帯状伝送線6を収納する環状の空間Sを形成する。外筒4は、帯状伝送線6の他端(外端)が接続され、側壁4aと上フランジ4bとを有している。ベースプレート5は、図1に示すように、中央に内筒軸部2aの下端を係合する開口5aが形成されたリング状の部材で、外周縁に外筒4が配置される。ベースプレート5は、発泡体層を有し、少なくとも帯状伝送線6側にポリエチレンテレフタレート等が設けられた防振シート5bが貼付されている。
【0014】
帯状伝送線6は、例えば、複数の平行な電気導体、光ファイバ或いはこれら双方を電気絶縁性等の被覆で覆った可撓性を有する帯状伝送線で、渦巻き状に巻回されて回転ケース2と固定ケース3とによって形成される環状の空間Sにルーズに収納される。制振板7は、環状の空間S内の回転ケース2の上フランジ2bと帯状伝送線6との間に配置され、帯状伝送線6の振動を抑制するリング状の部材で、ポリエステルエラストマー、ポリアセタール、ポリエチレン、ポリプロピレン等の合成樹脂から成形されている。
【0015】
制振板7には、図2及び図9(a)に示すように、制振板7の帯状伝送線6と接する部位に多数の穴11を設けている。これにより以下記載するように、制振板7が帯状伝送線6の側面の全体を接触しない状態で押圧することになる。
なお、穴の代わりに、図9(b)に示すように多数の凹部12を設けても同様な作用を奏する。さらに、制振板7には多数の穴11や、凹部12を設ける以外にも、制振板が帯状伝送線の側面の全体を接触しない状態で押圧するようなものであればこれに限られるものではない。例えば、図9(c)のように、波状の凹凸13を設けてもよい。
【0016】
制振板7は、図1乃至図3(c)に示すように、半径方向の断面形状において、内周縁及び外周縁が帯状伝送線6から遠ざかるように湾曲あるいはテーパ状に成形され、半径方向略中央の複数箇所に周方向に沿ってばね部7aが設けられている。
【0017】
ばね部7aは、図2及び図3に示すように、制振板7の板面から回転ケース2の上フランジ2b側に向かってアーチ状に突出成形され、頂部7bが幅狭に形成されている。また、制振板7は、図2及び図3(c)に示すように、回転ケース2の内筒軸部2aに形成した係合部(図示せず)が係合する切欠き7c及び上フランジ2bに形成した係合孔(図示せず)と係合する突起7dが形成されている。従って、制振板7は、回転ケース2の上フランジ2bと帯状伝送線6との間に配置することにより、回転ケース2と共に回転する。
【0018】
以上のように構成される本発明の回転コネクタ1は、一端(内端)を内筒軸部2aに、他端(外端)を外筒4に、それぞれ接続し、渦巻き状に巻回した帯状伝送線6を巻き締まりと巻き緩みの中立位置に調節した状態で、両ケース2、3によって形成される環状の空間S内にルーズに収容して組み立てられる。このとき、回転コネクタ1は、制振板7を上フランジ2bと帯状伝送線6との間に配置し、複数のばね部7aによるばね力によって帯状伝送線6をベースプレート5側へと押圧する。
【0019】
従って、組み立てられた回転コネクタ1は、巻き締まりや巻き緩みによって帯状伝送線6の長さに対応した所定回数だけ両ケース2、3が相対回転することができる。このとき、回転コネクタ1は、制振板7が帯状伝送線6をベースプレート5側へと押圧し、この押圧力を生むばね部7aが半径方向略中央の複数箇所に周方向に沿って設けられている。
【0020】
このため、制振板7は、巻き締まったり巻き緩んだりする中立位置近傍において、帯状伝送線6をベースプレート5側へとバランス良く適度な押圧力で押圧して振動を抑えるので、異音(叩き音)の発生を良好に抑制される。
【0021】
さらに、上述した効果に加え、本発明の実施の形態では、図2に示すように、制振板7が帯状伝送線6と接する部位には多数の穴11を設けている。そのため、帯状伝送線6の側面の全体が接触しない状態で制振板7により押圧されていることになり、制振板7と帯状伝送線6との接触面積が減少する。これにより両者が擦れあって発生する摺音を低減させることもできる。
前記穴の代わりに、図9(b)に示すように多数の凹部12を設けても、図9(c)のように波状の凹凸13を設けても、穴を設けた場合と同様の効果が得られる。
【0022】
なお、回転コネクタ1は、制振板7に形成するばね部7aの数並びに頂部7bの形状を適宜変更することにより、帯状伝送線6を押圧する押圧力を最適な大きさに調整することができる。そのため、帯状伝送線が回転軸方向及び回転軸に直交する方向に振動し、両ケースと衝突して叩き音が発生しない程度の制振板7の押圧力を維持しつつ、制振板7と帯状伝送線6とが擦れあって発生する摺音を低減させることもできる。また、押圧力の最適化により、回転ケース2と固定ケース3とが適度な回転トルクの下に円滑に相対回転させることも可能である。
【0023】
また、回転コネクタ1は、制振板7の内周縁及び外周縁が帯状伝送線6から遠ざかるように湾曲あるいはテーパ状に成形されている。このため、回転コネクタ1は、回転ケース2と固定ケース3との相対回転による帯状伝送線6の巻き締まりや巻き緩み、あるいは回転コネクタを取り付けた自動車の走行に伴って振動、特にベースプレート5の板面に沿った方向に振動したときに、帯状伝送線6の上縁が制振板7の内周縁や外周縁と干渉することがない。このため、回転コネクタ1は、両ケース2、3が一層円滑に相対回転して好ましい。
【0024】
ここで、制振板7は、図4に示すように、ばね部7aを切り離してもよい。このようにすると、制振板7が加熱されても、ばね部7aのばね力は低減するが、叩き音(踊り音)と呼ばれる異音の低減効果が維持されるので好ましい。また、制振板は、例えば、図5、6に示す制振板8のように、半径方向の断面形状において、内周縁及び外周縁が帯状伝送線6から遠ざかるように湾曲あるいはテーパ状に成形し、半径方向略中央の複数箇所に周方向に沿って形成した係止部8aにポリエステルエラストマー、ポリアセタール、ポリエチレン、ポリプロピレン等の合成樹脂あるいはステンレス、リン青銅等の金属からなるばね板9を着脱自在に係止してばね部としても、制振板7と同様の効果を得ることができるうえ、ばね板9を適宜着脱することにより、帯状伝送線6を押圧する押圧力を簡単に調整することができる。
【0025】
このとき、制振板8は、制振板7と同様の切欠き8bと突起8cを形成する。また、ばね板9は、制振板7のばね部7aと同様に、中間を幅狭に形成する。更に、制振板は、図7、8に示す制振板10のように、制振板8と同様に係止部10aにばね板(図示せず)を着脱自在に係止してばね部とすると共に、下面に帯状伝送線6側に突出し、周方向に延びる凸条10bを形成してもよい。
【0026】
ここで、制振板10は、制振板7と同様の切欠き10cと突起10dを形成する。このような構成すると、制振板10は、巻き締まったり巻き緩んだりする中立位置近傍において帯状伝送線6をベースプレート5側へとバランス良く一層適度な押圧力で押圧し、異音の発生を一層抑制することができる。
【0027】
【発明の効果】
本発明によれば、回転ケース2と固定ケース3とが適度な回転トルクの下に円滑に相対回転ができ、両ケースが衝突して叩き音が発生しないという従来の回転コネクタの長所を生かしつつ、制振板7と帯状伝送線6とが擦れあって発生する摺音の発生を抑えることができる。
【図面の簡単な説明】
【図1】本発明の回転コネクタを断面にして示した断面正面図である。
【図2】図1の回転コネクタで使用する制振板の平面図である。
【図3】図2の制振板の正面図(a)、同じくA−A線に沿った断面図(b)、同じくB−B線に沿った断面図(c)及び同じくC−C線に沿った断面図(d)である。
【図4】図3に示す制振板の変形例を示す断面図である。
【図5】本発明の回転コネクタで使用する制振板の他の態様を示す平面図である。
【図6】図5の制振板のV−V線に沿った断面図である。
【図7】本発明の回転コネクタで使用する制振板の更に他の態様を示すもので、図5の制振板のVII −VII 線に沿った断面図である。
【図8】図7の制振板の裏面図である。
【図9】制振板の断面図であり、制振板の帯状伝送線と接する部位に(a)は穴を開けたもの、(b)は凹部を設けたもの、(c)は波状の凹凸部を設けたものであるである。
【図10】従来の回転コネクタを断面にして示した断面正面図である。
【図11】図10の従来の回転コネクタに使用する制振板の平面図である。
【符号の説明】
1 回転コネクタ
2 回転ケース
3 固定ケース
4 外筒(固定ケース)
5 ベースプレート(固定ケース)
6 フラットケーブル
7 制振板
7a ばね部
8 制振板
9 ばね板(ばね部)
10 制振板
10b 凸条
11 制振板の帯状伝送線と接する部位に設けた穴
12 制振板の帯状伝送線と接する部位に設けた凹部
13 制振板の帯状伝送線と接する部位に設けた波状の凹凸
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rotary connector that transmits electricity, an optical signal, or both signals between two members that rotate relatively.
[0002]
[Prior art]
As a rotary connector for transmitting electricity, an optical signal, or both of these signals between two relatively rotating members, for example, in a steering device of an automobile, the vehicle body side and the airbag are electrically connected, and the airbag Rotating connectors used for starting up are known.
[0003]
In this rotary connector, a band-shaped transmission line wound in a spiral shape is accommodated in an annular space formed by a rotary case and a fixed case which are combined to be rotatable relative to each other. The belt-like transmission line is loosely accommodated in the annular space in order to realize relative rotation between the rotating case and the fixed case due to tightening or loosening.
[0004]
Therefore, the rotating connector vibrates in the direction of the rotation axis and in the direction perpendicular to the rotation axis as the automobile travels, and collides with both cases. As a result, the so-called tapping sound (dance sound) is generated. Will occur. Such abnormal noise worsens the interior environment of the automobile. In order to suppress generation | occurrence | production of this abnormal noise, the rotation connector as described in FIG. 10 is considered (refer patent document 1).
[0005]
That is, the rotary connector of FIG. 10 is combined with each other so as to be rotatable relative to each other, and has a rotary case 2 and a fixed case 3 in which an annular space S is formed. The ring-shaped transmission line 6 connected to the fixed case 3 is accommodated in the annular space, and has a ring-shaped damping plate 7 for suppressing the vibration of the band-shaped transmission line 6 disposed in the annular space. Is. The damping plate 7 is provided with spring portions 7 a that are elastic bodies along a circumferential direction at a plurality of locations so as to press the side surface of the band-shaped transmission line 6.
[0006]
Since the damping plate 7 presses the side surface of the band-shaped transmission line 6 by the action of the spring portion 7a, the band-shaped transmission line 6 suppresses the vibration in the direction of the rotation axis and the direction orthogonal to the rotation axis as the automobile travels. be able to. For this reason, since the band-shaped transmission line 6 does not collide with the rotating case 2 and the fixed case 3, it is possible to suppress the generation of a beating sound (dance sound). Moreover, since the pressing force of the damping plate 7 can be appropriately set by adjusting the spring portion 7a, the relative rotation between the rotating case 2 and the fixed case 3 can be performed smoothly.
[0007]
[Patent Document 1]
Japanese Patent No. 3311703 gazette
[Problems to be solved by the invention]
However, the rotary connector as shown in FIG. 10 has the following problems. That is, the surface of the ring-shaped damping plate 7 used in the rotary connector of FIG. 10 that contacts the belt-like transmission line 6 has a planar structure as shown in FIG. Therefore, the entire surface of the side surface of the belt-like transmission line 6 is pressed by the damping plate 7, and there is a problem that a sliding sound is generated when the rotating case 2 and the fixed case 3 are relatively rotated. Therefore, even if it is possible to suppress the generation of a hitting sound (dance sound), a sliding sound is generated, and thus a fundamental solution for preventing the generation of abnormal noise cannot be achieved. For this reason, there has been a problem that it is still difficult to eliminate the in-vehicle environment.
[0009]
The present invention has been made in view of the above points, and it is an object of the present invention to suppress the generation of sliding noise during the relative rotation of the rotary case and the fixed case of the rotary connector as shown in FIG.
[0010]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention is combined with each other so as to be rotatable relative to each other, a rotating case and a fixed case in which an annular space is formed, one end in the rotating case, the other end in the fixed case, respectively connected in rotary connector having a ring-shaped strip transmission line which is accommodated in the space, inhibiting ring-shaped damper plate vibrations of the strip transmission line arranged in a space of said annular, said damper Is disposed between the upper flange of the rotating case in the annular space and the belt-like transmission line, and spring portions are provided along the circumferential direction at a plurality of locations substantially in the center in the radial direction. The side surface of the band-shaped transmission line is pressed by the damping plate in a state where the entire surface is not in contact with each other by providing a large number of holes or irregularities in a portion that contacts the side surface of the band-shaped transmission line. You .
[0011]
Preferably, the fixed case has a base plate made of a foam layer, a vibration-proof sheet is affixed to at least the band-like transmission line side of the fixed case, and the spring portion is located above the rotating case from the plate surface of the vibration damping plate. An arch-shaped projection is formed toward the flange side, and the top is formed with a narrow width, and the damping plate has a notch and an upper flange with which an engaging portion formed on the inner cylindrical shaft portion of the rotating case is engaged. Protrusions that engage with the engaging holes formed in are formed .
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. As shown in FIG. 1, the rotary connector 1 includes a rotary case 2, a fixed case 3, a belt-like transmission line 6, and a damping plate 7. The rotating case 2 has an inner cylindrical shaft portion 2a to which one end (inner end) of the belt-like transmission line 6 is connected and an upper flange 2b.
[0013]
As shown in FIG. 1, the fixed case 3 includes an outer cylinder 4 and a base plate 5, and is combined with the rotary case 2 so as to be relatively rotatable, thereby forming an annular space S in which the band-shaped transmission line 6 is accommodated. . The outer cylinder 4 is connected to the other end (outer end) of the belt-like transmission line 6 and has a side wall 4a and an upper flange 4b. As shown in FIG. 1, the base plate 5 is a ring-shaped member in which an opening 5 a that engages the lower end of the inner cylinder shaft portion 2 a is formed at the center, and the outer cylinder 4 is disposed on the outer peripheral edge. The base plate 5 has a foam layer, and a vibration-proof sheet 5b provided with polyethylene terephthalate or the like is attached to at least the belt-like transmission line 6 side.
[0014]
The band-shaped transmission line 6 is a flexible band-shaped transmission line in which, for example, a plurality of parallel electric conductors, an optical fiber, or both of them are covered with a coating such as an electric insulating property. And the fixed case 3 are housed loosely in an annular space S. The damping plate 7 is a ring-shaped member that is disposed between the upper flange 2b of the rotating case 2 in the annular space S and the band-shaped transmission line 6 and suppresses vibration of the band-shaped transmission line 6, and is made of polyester elastomer, polyacetal. Molded from synthetic resin such as polyethylene and polypropylene.
[0015]
As shown in FIG. 2 and FIG. 9A, the damping plate 7 is provided with a number of holes 11 at portions of the damping plate 7 that are in contact with the belt-like transmission line 6. Thereby, as will be described below, the damping plate 7 presses the entire side surface of the belt-like transmission line 6 without contacting it.
It should be noted that the same effect can be obtained by providing a large number of recesses 12 as shown in FIG. In addition to providing a large number of holes 11 and recesses 12 in the damping plate 7, the damping plate 7 is not limited to this as long as the damping plate presses the entire side surface of the belt-like transmission line without contacting it. It is not a thing. For example, as shown in FIG. 9C, a wavy unevenness 13 may be provided.
[0016]
As shown in FIG. 1 to FIG. 3C, the damping plate 7 is formed in a curved or tapered shape so that the inner peripheral edge and the outer peripheral edge are away from the belt-shaped transmission line 6 in the radial cross-sectional shape. Spring portions 7a are provided along the circumferential direction at a plurality of substantially central positions.
[0017]
As shown in FIGS. 2 and 3, the spring portion 7 a is formed so as to project in an arch shape from the plate surface of the damping plate 7 toward the upper flange 2 b side of the rotating case 2, and the top portion 7 b is formed with a narrow width. Yes. Further, as shown in FIGS. 2 and 3 (c), the damping plate 7 includes a notch 7c that engages with an engaging portion (not shown) formed on the inner cylindrical shaft portion 2a of the rotating case 2, and an upper portion. A protrusion 7d that engages with an engagement hole (not shown) formed in the flange 2b is formed. Therefore, the damping plate 7 rotates with the rotating case 2 by being disposed between the upper flange 2 b of the rotating case 2 and the belt-like transmission line 6.
[0018]
The rotary connector 1 of the present invention configured as described above has one end (inner end) connected to the inner cylinder shaft portion 2a and the other end (outer end) connected to the outer cylinder 4 and wound in a spiral shape. The belt-shaped transmission line 6 is loosely accommodated and assembled in an annular space S formed by the cases 2 and 3 in a state where the belt-like transmission line 6 is adjusted to the neutral position of the tightening and loosening. At this time, the rotary connector 1 arranges the damping plate 7 between the upper flange 2b and the band-shaped transmission line 6, and presses the band-shaped transmission line 6 toward the base plate 5 by the spring force of the plurality of spring portions 7a.
[0019]
Therefore, the assembled rotary connector 1 can rotate both the cases 2 and 3 by a predetermined number of times corresponding to the length of the belt-like transmission line 6 by tightening or loosening. At this time, in the rotary connector 1, the damping plate 7 presses the band-shaped transmission line 6 toward the base plate 5, and spring portions 7 a that generate this pressing force are provided along a circumferential direction at a plurality of locations substantially in the center in the radial direction. ing.
[0020]
For this reason, the damping plate 7 suppresses the vibration by pressing the belt-like transmission line 6 toward the base plate 5 side with an appropriate pressing force in the vicinity of the neutral position where the winding is tightened or loosened. Sound) is suppressed satisfactorily.
[0021]
Furthermore, in addition to the effects described above, in the embodiment of the present invention, as shown in FIG. 2, a large number of holes 11 are provided in a portion where the damping plate 7 is in contact with the belt-like transmission line 6. For this reason, the entire side surface of the belt-shaped transmission line 6 is pressed by the vibration damping plate 7 without being in contact with it, and the contact area between the vibration damping plate 7 and the belt-shaped transmission line 6 is reduced. As a result, it is possible to reduce the squeaking noise that occurs when the two rub against each other.
Instead of the holes, even if a large number of recesses 12 are provided as shown in FIG. 9B or wavy unevenness 13 is provided as shown in FIG. Is obtained.
[0022]
In addition, the rotary connector 1 can adjust the pressing force which presses the strip | belt-shaped transmission line 6 to an optimal magnitude | size by changing suitably the number of the spring parts 7a formed in the damping board 7, and the shape of the top part 7b. it can. Therefore, while maintaining the pressing force of the vibration damping plate 7 to such an extent that the belt-like transmission line vibrates in the direction of the rotation axis and the direction perpendicular to the rotation axis and does not collide with both cases to generate tapping noise, The noise generated by rubbing with the belt-like transmission line 6 can be reduced. In addition, by optimizing the pressing force, the rotating case 2 and the fixed case 3 can be smoothly relatively rotated under an appropriate rotational torque.
[0023]
The rotary connector 1 is formed in a curved or tapered shape so that the inner and outer peripheral edges of the damping plate 7 are away from the belt-like transmission line 6. For this reason, the rotary connector 1 vibrates as the belt-like transmission line 6 is tightened or loosened due to the relative rotation of the rotary case 2 and the fixed case 3, or the automobile travels with the rotary connector attached. When vibrating in a direction along the surface, the upper edge of the band-shaped transmission line 6 does not interfere with the inner and outer peripheral edges of the damping plate 7. For this reason, the rotary connector 1 is preferable because both the cases 2 and 3 rotate relatively smoothly.
[0024]
Here, the damping plate 7 may cut off the spring portion 7a as shown in FIG. In this way, even if the damping plate 7 is heated, the spring force of the spring portion 7a is reduced, but it is preferable because an effect of reducing abnormal noise called a beating sound (dance sound) is maintained. Further, the damping plate is formed in a curved or tapered shape so that the inner and outer peripheral edges are away from the belt-like transmission line 6 in the radial cross-sectional shape as in the damping plate 8 shown in FIGS. A spring plate 9 made of a synthetic resin such as polyester elastomer, polyacetal, polyethylene, or polypropylene, or a metal such as stainless steel or phosphor bronze can be detachably attached to the engaging portions 8a formed in the circumferential direction at a plurality of substantially central locations in the radial direction. The same effect as that of the damping plate 7 can be obtained by engaging with the spring plate, and the pressing force for pressing the belt-like transmission line 6 can be easily adjusted by attaching and detaching the spring plate 9 as appropriate. Can do.
[0025]
At this time, the damping plate 8 forms a notch 8b and a protrusion 8c similar to the damping plate 7. Further, the spring plate 9 is formed to have a narrow middle portion in the same manner as the spring portion 7 a of the damping plate 7. Further, like the damping plate 10 shown in FIGS. 7 and 8, the damping plate has a spring plate (not shown) detachably locked to the locking portion 10a in the same manner as the damping plate 8. In addition, a protrusion 10b that protrudes toward the band-shaped transmission line 6 and extends in the circumferential direction may be formed on the lower surface.
[0026]
Here, the damping plate 10 forms a notch 10 c and a projection 10 d similar to the damping plate 7. With such a configuration, the damping plate 10 presses the band-shaped transmission line 6 toward the base plate 5 with a more appropriate pressing force in the vicinity of the neutral position where the winding is tightened or loosened, thereby further generating abnormal noise. Can be suppressed.
[0027]
【The invention's effect】
According to the present invention, the rotating case 2 and the fixed case 3 can smoothly rotate relative to each other under an appropriate rotational torque, while taking advantage of the advantages of the conventional rotating connector that the two cases collide and do not generate tapping noise. Further, it is possible to suppress the generation of the squeaking noise generated by rubbing between the damping plate 7 and the belt-like transmission line 6.
[Brief description of the drawings]
FIG. 1 is a cross-sectional front view showing a rotary connector of the present invention in cross section.
2 is a plan view of a damping plate used in the rotary connector of FIG. 1. FIG.
3 is a front view (a) of the vibration damping plate of FIG. 2, a cross-sectional view (b) along the line AA, a cross-sectional view (c) along the line BB, and a CC line. It is sectional drawing in alignment with (d).
4 is a cross-sectional view showing a modified example of the vibration damping plate shown in FIG. 3;
FIG. 5 is a plan view showing another aspect of the vibration damping plate used in the rotary connector of the present invention.
6 is a cross-sectional view taken along line VV of the vibration damping plate of FIG.
7 shows still another aspect of the vibration damping plate used in the rotary connector of the present invention, and is a cross-sectional view taken along line VII-VII of the vibration damping plate of FIG.
8 is a rear view of the vibration damping plate of FIG. 7;
FIGS. 9A and 9B are cross-sectional views of the damping plate, where FIG. 9A shows a portion where the band-shaped transmission line of the damping plate is in contact, FIG. 9B shows a hole, FIG. 9B shows a concave portion, and FIG. An uneven portion is provided.
FIG. 10 is a cross-sectional front view showing a conventional rotary connector in cross section.
11 is a plan view of a damping plate used in the conventional rotary connector of FIG.
[Explanation of symbols]
1 Rotating connector 2 Rotating case 3 Fixed case 4 Outer cylinder (fixed case)
5 Base plate (fixed case)
6 Flat cable 7 Damping plate 7a Spring portion 8 Damping plate 9 Spring plate (spring portion)
DESCRIPTION OF SYMBOLS 10 Damping board 10b Convex strip 11 Hole 12 provided in the site | part which contact | connects the strip | belt-shaped transmission line of a damping board 12 Recessed part provided in the site | part which contact | connects the strip | belt-shaped transmission line of damping board 13 Wavy irregularities

Claims (2)

互いに相対回転自在に組み合わされ、内部に環状の空間が形成される回転ケース及び固定ケース、一端が前記回転ケースに、他端が前記固定ケースに、それぞれ接続し、前記状の空間に収容される帯状伝送線、前記環状の空間に配置された前記帯状伝送線の振動を抑制するリング状の制振板を有する回転コネクタにおいて、前記制振板は環状の空間内の回転ケースの上フランジと帯状伝送線との間に配置され、その半径方向略中央の複数箇所に周方向に沿ってばね部が設けられており、さらに前記制振板の前記帯状伝送線の側面と接する部位に多数の穴、または、凹凸が設けられることにより、前記帯状伝送線の側面はその全体が接触しない状態で前記制振板により押圧されていることを特徴とする回転コネクタ。Combined freely rotate relative to each other, rotating case and the fixed case annular space is formed inside at one end said rotating case, the other end the fixed casing, respectively connected, accommodated in the ring-shaped space A rotary connector having a ring-shaped damping plate that suppresses vibration of the belt-like transmission line disposed in the annular space, and the damping plate includes an upper flange of a rotating case in the annular space; It is arranged between the belt-shaped transmission line, and spring portions are provided along the circumferential direction at a plurality of locations substantially in the center in the radial direction, and a large number of portions are in contact with the side surface of the band-shaped transmission line of the damping plate. The rotary connector is characterized in that the side surface of the belt-like transmission line is pressed by the damping plate in a state where the whole is not in contact with the hole or the unevenness . 前記固定ケースは発泡体層からなるベースプレートを有し、前記固定ケースの少なくとも前記帯状伝送線側に防振シートが貼付され、前記ばね部が制振板の板面から回転ケースの上フランジ側に向かってアーチ状に突出形成され、その頂部が幅狭に形成されており、前記制振板は回転ケースの内筒軸部に形成した係合部が係合する切欠き及び上フランジに形成した係合孔と係合する突起が形成されていることを特徴とする請求項1記載の回転コネクタ。 The fixed case has a base plate made of a foam layer, a vibration-proof sheet is affixed to at least the band-shaped transmission line side of the fixed case, and the spring portion is on the upper flange side of the rotating case from the plate surface of the vibration damping plate. It is formed to project in an arch shape toward the top, and the top part is formed narrow, and the damping plate is formed in the notch and the upper flange that engage with the engaging part formed in the inner cylindrical shaft part of the rotating case. The rotation connector according to claim 1, wherein a protrusion engaging with the engagement hole is formed .
JP2002355877A 2002-12-06 2002-12-06 Rotating connector Expired - Fee Related JP4115261B2 (en)

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JP2002355877A JP4115261B2 (en) 2002-12-06 2002-12-06 Rotating connector

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JP2002355877A JP4115261B2 (en) 2002-12-06 2002-12-06 Rotating connector

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JP2004192832A JP2004192832A (en) 2004-07-08
JP4115261B2 true JP4115261B2 (en) 2008-07-09

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Publication number Priority date Publication date Assignee Title
JP4574296B2 (en) * 2004-09-10 2010-11-04 ナイルス株式会社 Rotating connector

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