JP6520379B2 - Resistance generator - Google Patents

Resistance generator Download PDF

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JP6520379B2
JP6520379B2 JP2015101602A JP2015101602A JP6520379B2 JP 6520379 B2 JP6520379 B2 JP 6520379B2 JP 2015101602 A JP2015101602 A JP 2015101602A JP 2015101602 A JP2015101602 A JP 2015101602A JP 6520379 B2 JP6520379 B2 JP 6520379B2
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friction member
elastic deformation
rotational
rotary
friction
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JP2016216973A (en
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酒井 俊行
俊行 酒井
竜生 鈴木
竜生 鈴木
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Aisin Corp
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Aisin Seiki Co Ltd
Aisin Corp
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Description

本発明は、車両に設けられる回転体の回転運動に対する抵抗を発生する抵抗発生装置に関する。   The present invention relates to a resistance generating device that generates a resistance to the rotational movement of a rotating body provided in a vehicle.

従来、車両には、バックドア、スウィングドア、スライドドア又は窓ガラスなどの開閉部材を開閉する駆動装置が設けられている。例えば、バックドア(後尾扉)を開閉する駆動装置は、一端部に車体に連結される継ぎ手を有し、他端部に開閉部材に連結される継ぎ手を有する。駆動装置は、モータの動力やユーザの人力(動力)により回転するねじ付きスピンドルと、ねじ付きスピンドルに螺合するスピンドルナットと、一端部がスピンドルナットに固定され、他端部が開閉部材に連結される継ぎ手に固定されるスピンドル管とを有する。   Conventionally, a vehicle is provided with a drive device for opening and closing an opening and closing member such as a back door, a swing door, a slide door, or a window glass. For example, the drive device for opening and closing the back door (rear door) has a joint connected to the vehicle body at one end, and has a joint connected to the opening and closing member at the other end. The drive unit has a threaded spindle that is rotated by the power of the motor or the user's manual force (power), a spindle nut screwed to the threaded spindle, one end fixed to the spindle nut, and the other end connected to the opening / closing member And a spindle tube fixed to the joint.

動力によりねじ付きスピンドルが回転すると、ねじ付きスピンドルの回転運動は、ねじ付きスピンドルとスピンドルナットとによりスピンドルナットの直線運動へ変換される。これにより、スピンドルナットに固定されたスピンドル管が直線的に移動して開閉部材が開閉する。また、駆動装置は、ユーザが開閉部材に手をかけて手動で開閉部材を開閉することもできるように構成されている。駆動装置は、開閉部材が開いた状態を保持するために圧縮コイルばねを有する。圧縮コイルばねは、開閉部材の自重に釣り合った反力を発生することにより開閉部材の開状態を保持する。   As the powered spindle rotates the threaded spindle, the rotational motion of the threaded spindle is converted to linear motion of the spindle nut by the threaded spindle and the spindle nut. Thereby, the spindle tube fixed to the spindle nut moves linearly, and the opening and closing member opens and closes. The drive device is also configured such that the user can manually open and close the opening and closing member by putting a hand on the opening and closing member. The drive has a compression coil spring to hold the open / close member in an open state. The compression coil spring holds the open state of the opening and closing member by generating a reaction force balanced with the weight of the opening and closing member.

また、駆動装置は、風や雪などの外力が開閉部材に作用した場合でも開閉部材の開状態を保持するために、ねじ付きスピンドルの回転運動に対する抵抗を発生する抵抗発生装置が設けられている(特許文献1)。特許文献1は、ねじ付きスピンドル及びスピンドルナットを有する駆動装置における抵抗発生装置を開示している。抵抗発生装置は、モータからの動力を受ける回転可能な動力受け部と、動力受け部の回転運動をねじ付きスピンドルへ伝達する出力部材と、動力受け部の周りを取り囲む中空円筒伝達要素と、中空円筒伝達要素を取り囲む固定部材と、固定部材の内周面に摩擦係合する第一ねじりコイルばねと、中空円筒伝達要素の内周面に摩擦係合する第二ねじりコイルばねとを有している。動力受け部の回転運動は、出力部材へ伝達される。   In addition, the drive device is provided with a resistance generator that generates a resistance to the rotational movement of the threaded spindle in order to maintain the open state of the open / close member even when external force such as wind or snow acts on the open / close member. (Patent Document 1). Patent Document 1 discloses a resistance generating device in a drive device having a threaded spindle and a spindle nut. The resistance generator comprises a rotatable power receiver receiving power from the motor, an output member transmitting the rotational movement of the power receiver to the threaded spindle, a hollow cylindrical transmission element surrounding the power receiver, and a hollow A fixed member surrounding the cylindrical transfer element, a first torsion coil spring frictionally engaged with the inner peripheral surface of the fixed member, and a second torsion coil spring frictionally engaged with the inner peripheral surface of the hollow cylindrical transfer element There is. The rotational movement of the power receiver is transmitted to the output member.

モータにより動力受け部が回転すると、動力受け部が第二ねじりコイルばねを巻き増し(付勢)して第二ねじりコイルばねの外径を小さくし第二ねじりコイルばねと中空円筒伝達要素との摩擦係合を弱める。これによって、動力受け部は、小さな抵抗で出力部材を回転し、開閉部材を開閉することができる。モータの回転が停止すると、固定部材と第一ねじりコイルばねとの摩擦係合及び中空円筒伝達要素と第二ねじりコイルばねとの摩擦係合により、開閉部材が開かれた開度で開閉部材の開状態が保持される。   When the power receiving portion is rotated by the motor, the power receiving portion winds up (biases) the second torsion coil spring to reduce the outer diameter of the second torsion coil spring, and the second torsion coil spring and the hollow cylindrical transmission element Decrease the frictional engagement. Thus, the power receiving portion can rotate the output member with a small resistance and open and close the opening and closing member. When the rotation of the motor is stopped, the open / close member is opened at the opening degree by the frictional engagement between the fixed member and the first torsion coil spring and the frictional engagement between the hollow cylindrical transfer element and the second torsion coil spring. The open state is maintained.

一方、ユーザが手動で開閉部材に力をかけると、出力部材が第二ねじりコイルばねを巻き減らし(付勢)して第二ねじりコイルばねと中空円筒伝達要素との摩擦係合を強め、中空円筒伝達要素が回転される。中空円筒伝達要素の回転は、第一ねじりコイルばねを巻き増し(付勢)して第一ねじりコイルばねの外径を小さくし第一ねじりコイルばねと固定部材との摩擦係合を弱める。これによって、出力部材は、小さな抵抗で回転し、ユーザは手動で開閉部材を開閉することができる。   On the other hand, when the user manually applies a force to the opening / closing member, the output member reduces (biases) the second torsion coil spring to strengthen the frictional engagement between the second torsion coil spring and the hollow cylindrical transmission element, resulting in the hollow The cylindrical transfer element is rotated. The rotation of the hollow cylindrical transfer element winds up (biases) the first torsion coil spring to reduce the outer diameter of the first torsion coil spring and weakens the frictional engagement between the first torsion coil spring and the fixing member. By this, the output member rotates with a small resistance, and the user can manually open and close the opening and closing member.

独国実用新案出願公開第202007015597号明細書German Utility Model Application Publication No. 202007015597

しかし、特許文献1においては、開閉部材を開閉するためにモータにより出力部材を回転するとき、第二ねじりコイルばねと中空円筒伝達要素との間の摩擦係合を完全には解除できないので、モータによる出力部材の回転運動に対する抵抗がゼロにならない。   However, in Patent Document 1, when the output member is rotated by the motor to open and close the opening and closing member, the frictional engagement between the second torsion coil spring and the hollow cylindrical transmission element can not be completely released. Resistance to the rotational movement of the output member due to.

また、第一及び第二ねじりコイルばねの直径の伸縮により摩擦抵抗を発生しているので、抵抗力が安定しないという問題がある。第一及び第二ねじりコイルばねの直径の伸縮により摩擦抵抗力を調整する場合、摩擦抵抗力の設定が困難である。第一及び第二ねじりコイルばねによる摩擦抵抗力の設定が困難であるため、開状態の開閉部材にわずかな外力が作用しただけで開閉部材が意図せずに閉じるおそれがあるという問題もある。さらに、モータにより出力部材を回転させるときでさえ、第二ねじりコイルばねが中空円筒伝達要素と摩擦係合しているので、モータの駆動力に損失を生じる。   In addition, since the frictional resistance is generated by the expansion and contraction of the diameters of the first and second torsion coil springs, there is a problem that the resistance is not stable. When adjusting the frictional resistance force by the expansion and contraction of the diameter of the first and second torsion coil springs, it is difficult to set the frictional resistance force. Since the setting of the frictional resistance force by the first and second torsion coil springs is difficult, there is also a problem that the opening and closing member may be closed unintentionally only by applying a slight external force to the opening and closing member in the open state. Furthermore, even when the motor rotates the output member, the second torsion coil spring frictionally engages the hollow cylindrical transmission element, resulting in a loss in the driving force of the motor.

そこで、本発明は、解除部材の回転運動を回転体へ伝達するときに、回転体の回転運動に対する抵抗を簡単な構造で確実に解除することができる抵抗発生装置を提供する。   Therefore, the present invention provides a resistance generating device capable of reliably releasing resistance to rotational movement of a rotating body with a simple structure when transmitting rotational movement of a release member to the rotating body.

上記課題を解決するために、本発明の一実施例による車両に設けられる抵抗発生装置は、
動力を受けて回転する解除部材と、
前記動力を受けずに固定された固定部材と、
前記固定部材に固定して配置された弾性変形部材と、
前記解除部材が前記動力を受けて回転するのに伴い、前記弾性変形部材と接触する接触位置と前記弾性変形部材から離れる離間位置との間を移動可能な回転摩擦部材と、
前記回転摩擦部材の回転運動を回転体へ伝達する出力部材と、
前記回転摩擦部材を前記接触位置へ付勢する付勢部材と、
を備え
前記付勢部材は、前記出力部材と前記回転摩擦部材の間に配置され、
前記出力部材と前記回転摩擦部材の間に前記付勢部材を保持するために、前記出力部材は、前記回転摩擦部材に設けられた突起部に係止する爪部を有する。
In order to solve the above-mentioned subject, a resistance generating device provided in a vehicle according to an embodiment of the present invention is:
A release member that receives power and rotates;
A fixing member fixed without receiving the power;
An elastic deformation member disposed fixed to the fixing member;
A rotational friction member movable between a contact position in contact with the elastic deformation member and a separated position away from the elastic deformation member as the release member receives the power and rotates;
An output member for transmitting the rotational movement of the rotational friction member to the rotating body;
A biasing member for biasing the rotational friction member to the contact position;
Equipped with
The biasing member is disposed between the output member and the rotational friction member.
To hold the biasing member between said rotary friction member and the output member, the output member, that have a claw portion for engaging the projecting portion provided on said rotary friction member.

本発明によれば、解除部材の回転運動を回転体へ伝達するときに、回転体の回転運動に対する抵抗を簡単な構造で確実に解除することができる。   According to the present invention, when transmitting the rotational movement of the release member to the rotating body, the resistance to the rotational movement of the rotating body can be reliably released with a simple structure.

車両のバックドアに設けられた駆動装置を示す図。The figure which shows the drive device provided in the back door of the vehicle. 駆動装置の斜視図。FIG. 駆動装置の断面図。Sectional drawing of a drive device. モータと減速機との間に配置された抵抗発生装置の断面図。Sectional drawing of the resistance generator arrange | positioned between a motor and a reduction gear. 抵抗発生装置の分解斜視図。The disassembled perspective view of a resistance generator. 解除部材の斜視図。FIG. 弾性変形部材と保持部材の断面図。Sectional drawing of an elastic deformation member and a holding member. 回転摩擦部材を示す図。The figure which shows a rotation friction member. 出力部材と回転摩擦部材を示す図。The figure which shows an output member and a rotation friction member. 回転摩擦部材と弾性変形部材の拡大断面図。The expanded sectional view of a rotation friction member and an elastic deformation member. モータから見た回転摩擦部材と解除部材を示す図。The figure which shows the rotation friction member and releasing member seen from the motor. 変形例のカム部が設けられた回転摩擦部材を示す図。The figure which shows the rotation friction member in which the cam part of the modification was provided.

以下、添付図面を参照して、本発明を実施するための形態を説明する。ただし、以下の実施形態に記載されている構成部品の寸法、材質、形状、その相対配置などは、特に特定的な記載がない限りは、この発明の範囲をそれらのみに限定する趣旨のものではない。   Hereinafter, with reference to the accompanying drawings, modes for carrying out the present invention will be described. However, the dimensions, materials, shapes, relative arrangements, etc. of components described in the following embodiments are intended to limit the scope of the present invention to only those unless otherwise specified. Absent.

(駆動装置)
図1は、車両150のバックドア(開閉部材)200に設けられた駆動装置100を示す図である。本実施例において、駆動装置100は、いわゆるスピンドルパワーバックドア駆動ユニットである。しかし、駆動装置100は、車両のスウィングドア、スライドドア、窓ガラスなどの開閉部材を開閉するために用いてもよい。また、駆動装置100は、ドアの開閉に限らず、車両のシートを昇降させるために使用してもよい。
(Drive)
FIG. 1 is a view showing a drive device 100 provided in a back door (opening and closing member) 200 of a vehicle 150. As shown in FIG. In the present embodiment, the drive device 100 is a so-called spindle power backdoor drive unit. However, the drive device 100 may be used to open and close an opening and closing member such as a swing door, a slide door, and a window glass of a vehicle. Moreover, the drive device 100 may be used not only to open and close the door but also to raise and lower the seat of the vehicle.

駆動装置100は、車両150の車体150Aの幅方向の両側で車体150Aとバックドア200との間に設けられている。駆動装置100の両端部に継ぎ手102及び104がそれぞれ設けられている。駆動装置100の一端部の継ぎ手102は、車体150Aに連結されている。駆動装置100の他端部の継ぎ手104は、バックドア200に連結されている。駆動装置100に内蔵されているモータ110(図3)により円筒状のカバー管106が円筒状のハウジング管107に対して相対移動することにより、バックドア200が開閉する。   Drive device 100 is provided between vehicle body 150A and back door 200 on both sides in the width direction of vehicle body 150A of vehicle 150. Joints 102 and 104 are provided at both ends of the drive device 100, respectively. The joint 102 at one end of the drive device 100 is connected to the vehicle body 150A. The joint 104 at the other end of the drive device 100 is connected to the back door 200. When the cylindrical cover tube 106 is moved relative to the cylindrical housing tube 107 by the motor 110 (FIG. 3) incorporated in the drive device 100, the back door 200 is opened and closed.

図2は、駆動装置100の斜視図である。駆動装置100は、ハウジング管107と、ハウジング管107に入れ子式に嵌合されたカバー管106とを有する。カバー管106は、ハウジング管107に対して軸線方向に往復移動可能である。カバー管106及びハウジング管107は、伸縮自在管を構成している。ハウジング管107の端部に継ぎ手102が設けられている。カバー管106の端部に継ぎ手104が設けられている。電気ケーブル108は、ハウジング管107に収納されたモータ110(図3)へ電力を供給する。   FIG. 2 is a perspective view of the drive device 100. FIG. The drive device 100 comprises a housing tube 107 and a cover tube 106 telescopically fitted to the housing tube 107. The cover tube 106 is axially reciprocally movable with respect to the housing tube 107. The cover pipe 106 and the housing pipe 107 constitute a telescopic pipe. A joint 102 is provided at the end of the housing tube 107. A joint 104 is provided at the end of the cover tube 106. Electrical cable 108 supplies power to motor 110 (FIG. 3) housed in housing tube 107.

図3は、駆動装置100の断面図である。図3(a)は、バックドア200を全閉したときの駆動装置100を示す図である。図3(b)は、バックドア200を全開したときの駆動装置100を示す図である。駆動装置100の駆動源としてのモータ110は、ハウジング管107に収納されている。モータ110の回転軸(入力軸)111は、抵抗発生装置1に連結されている。抵抗発生装置1は、減速機(遊星歯車)112に連結されて、モータ110の動力を減速機112へ伝達する。減速機112は、ねじ付きスピンドル(回転体)113に連結されている。抵抗発生装置1は、モータ110と減速機112との間に配置されている。減速機112は、抵抗発生装置1の回転速度を減速してねじ付きスピンドル113へ伝達する。抵抗発生装置1は、減速機112を介してモータ110の回転運動をねじ付きスピンドル113へ伝達する。   FIG. 3 is a cross-sectional view of the drive device 100. As shown in FIG. FIG. 3A shows the drive unit 100 when the back door 200 is fully closed. FIG. 3B is a view showing the drive device 100 when the back door 200 is fully opened. A motor 110 as a drive source of the drive device 100 is housed in a housing tube 107. The rotating shaft (input shaft) 111 of the motor 110 is connected to the resistance generator 1. The resistance generator 1 is connected to a reduction gear (planet gear) 112 to transmit the power of the motor 110 to the reduction gear 112. The reduction gear 112 is connected to a threaded spindle (rotary body) 113. The resistance generator 1 is disposed between the motor 110 and the reduction gear 112. The reduction gear 112 reduces the rotational speed of the resistance generator 1 and transmits it to the threaded spindle 113. The resistance generator 1 transmits the rotational movement of the motor 110 to the threaded spindle 113 via the reduction gear 112.

スピンドルナット114は、ねじ付きスピンドル113に螺合している。ねじ付きスピンドル113は、回転可能にハウジング管107により保持されている。ねじ付きスピンドル113は、円筒状のスピンドル管115に挿入されている。スピンドル管115の一端部は、スピンドルナット114に固定され、他端部は、継ぎ手104及びカバー管106に固定されている。   The spindle nut 114 is in threaded engagement with the threaded spindle 113. The threaded spindle 113 is rotatably held by the housing tube 107. The threaded spindle 113 is inserted into a cylindrical spindle tube 115. One end of the spindle tube 115 is fixed to the spindle nut 114, and the other end is fixed to the joint 104 and the cover tube 106.

カバー管106の内部には、圧縮コイルばね116が収納されている。圧縮コイルばね116は、バックドア200が開かれたときに、バックドア200を開状態に保持するためにバックドア200の自重と釣り合う付勢力を発生する。なお、ここでいう「バックドア200の自重と釣り合う」は、バックドア200が任意の位置に開放されたときにバックドア200を当該任意の位置に保持できることを意味する。   A compression coil spring 116 is housed inside the cover tube 106. The compression coil spring 116 generates a biasing force that balances the weight of the back door 200 to hold the back door 200 in an open state when the back door 200 is opened. Here, "balance with the weight of the back door 200" means that the back door 200 can be held at any position when the back door 200 is opened at any position.

モータ110が回転すると、抵抗発生装置1及び減速機112を介してねじ付きスピンドル113が回転する。ねじ付きスピンドル113の回転運動は、ねじ付きスピンドル113とスピンドルナット114との螺合によりスピンドルナット114及びスピンドル管115の直線運動へ変換される。スピンドルナット114及びスピンドル管115の直線運動により、カバー管106は、ハウジング管107に対して移動してバックドア200を開閉する。   When the motor 110 rotates, the threaded spindle 113 rotates via the resistance generator 1 and the reduction gear 112. The rotational movement of the threaded spindle 113 is converted into linear movement of the spindle nut 114 and the spindle tube 115 by screwing the threaded spindle 113 and the spindle nut 114. The linear motion of the spindle nut 114 and the spindle tube 115 causes the cover tube 106 to move relative to the housing tube 107 to open and close the back door 200.

バックドア200が全閉されているとき、図3(a)に示すように、スピンドルナット114は、ねじ付きスピンドル113の下部に位置し、カバー管106のほとんどの部分がハウジング管107を覆っている。すなわち、伸縮自在管は、縮んだ状態である。バックドア200を開くためにモータ110が回転すると、ねじ付きスピンドル113の回転によりスピンドルナット114が上方へ移動する。バックドア200が全開されると、図3(b)に示すように、スピンドルナット114は、ねじ付きスピンドル113の上部に位置し、カバー管106がハウジング管107に対して上方へ移動する。すなわち、伸縮自在管は、伸びた状態である。   When the back door 200 is fully closed, as shown in FIG. 3A, the spindle nut 114 is located below the threaded spindle 113, and most of the cover tube 106 covers the housing tube 107. There is. That is, the telescopic tube is in a contracted state. When the motor 110 rotates to open the back door 200, the rotation of the threaded spindle 113 moves the spindle nut 114 upward. When the back door 200 is fully opened, as shown in FIG. 3 (b), the spindle nut 114 is positioned above the threaded spindle 113, and the cover tube 106 moves upward with respect to the housing tube 107. That is, the telescopic tube is in an extended state.

カバー管106は、ハウジング管107に対して任意の位置に停止することができる。任意の位置に停止したカバー管106には、バックドア200の自重がかかるが、バックドア200の自重は、圧縮コイルばね116の付勢力と釣り合う。これによって、バックドア200は、任意の位置に停止可能である。駆動装置100は、バックドア200をどの開度でも自由に止められるフリーストップを実現するドア保持装置である。バックドア200に風などの不所望の外力が作用した場合や車両が傾斜面に停車しており、バックドア200の自重と圧縮コイルばね116の付勢力との釣り合いが崩れた場合、抵抗発生装置1は、バックドア200の開閉動作に対する抵抗を発生してバックドア200の位置を保持する。   The cover tube 106 can stop at any position relative to the housing tube 107. Although the weight of the back door 200 is applied to the cover pipe 106 stopped at an arbitrary position, the weight of the back door 200 is balanced with the biasing force of the compression coil spring 116. Thereby, the back door 200 can be stopped at any position. The driving device 100 is a door holding device which realizes a free stop which can freely stop the back door 200 at any opening degree. When an undesirable external force such as wind is applied to the back door 200 or when the vehicle is stopped on a slope and the balance between the weight of the back door 200 and the biasing force of the compression coil spring 116 is broken, the resistance generating device 1 generates resistance to the opening and closing operation of the back door 200 to hold the back door 200 in position.

(抵抗発生装置)
バックドア200が開いたときに、バックドア200が自重により閉じることを防止するために、駆動装置100には、圧縮コイルばね116が設けられている。しかし、バックドア200の開状態でバックドア200に風や雪などの負荷が作用した場合や、車両が傾斜面に停車しておりバックドア200の自重と圧縮コイルばね116の付勢力との釣り合いが崩れた場合、バックドア200が不所望に閉じるおそれがある。そこで、開かれたバックドア200にある程度の外力が作用してもバックドア200が閉じることがないように、駆動装置100には、抵抗発生装置1が設けられている。抵抗発生装置1は、電気的制御を必要とすることなく、バックドア200の作動状態に応じて、停止保持状態(保持力付与状態)と作動許容状態(保持力解除状態)とを機械的に切り替えることができる抵抗機構である。抵抗発生装置1は、バックドア200を任意の開度で停止させるときに抵抗(保持力)を発生してバックドア200を任意の開度で保持する機能と、モータ110によりバックドア200を開閉するときに抵抗を解除してモータ110の出力損失なくモータ110によるバックドア200の開閉を許容する機能とを有する。
(Resistance generator)
In order to prevent the back door 200 from closing by its own weight when the back door 200 is opened, the drive device 100 is provided with a compression coil spring 116. However, when a load such as wind or snow acts on the back door 200 in the open state of the back door 200, or when the vehicle is stopped on an inclined surface, the balance between the weight of the back door 200 and the biasing force of the compression coil spring 116 If it is broken, the back door 200 may close undesirably. Therefore, the resistance generating device 1 is provided in the drive device 100 so that the back door 200 does not close even if an external force of a certain degree acts on the opened back door 200. The resistance generating device 1 mechanically does not require electrical control and mechanically holds the stop holding state (holding force application state) and the operation permitting state (holding force release state) according to the operation state of the back door 200. It is a resistance mechanism that can be switched. The resistance generator 1 generates a resistance (holding force) when stopping the back door 200 at an arbitrary opening degree and holds the back door 200 at an arbitrary opening degree, and opens and closes the back door 200 by the motor 110. And the function of allowing the motor 110 to open and close the back door 200 without output loss of the motor 110.

図4は、モータ110と減速機112との間に配置された抵抗発生装置1の断面図である。図4(a)は、モータ110が停止し、回転摩擦部材5が弾性変形部材7に接触している状態を示す。図4(b)は、モータ110が回転し、回転摩擦部材5が弾性変形部材7から離間している状態を示す。抵抗発生装置1は、ハウジング管107内に収納される。図4においては、ハウジング管107の図示を省略している。抵抗発生装置1の入力側は、モータ110に連結されている。抵抗発生装置1の出力側は、減速機112に連結されている。抵抗発生装置1は、モータ110の回転軸111から動力を受けて回転する。モータ110は、高速で回転するので、抵抗発生装置1の出力部材2は、高速で回転する。減速機112は、出力部材2の回転速度を減速し、減速した回転速度でねじ付きスピンドル113を回転する。   FIG. 4 is a cross-sectional view of the resistance generator 1 disposed between the motor 110 and the reduction gear 112. FIG. 4A shows a state in which the motor 110 is stopped and the rotational friction member 5 is in contact with the elastic deformation member 7. FIG. 4B shows a state in which the motor 110 rotates and the rotational friction member 5 is separated from the elastic deformation member 7. The resistance generator 1 is housed in a housing tube 107. In FIG. 4, the illustration of the housing pipe 107 is omitted. The input side of the resistance generator 1 is connected to the motor 110. The output side of the resistance generator 1 is connected to the reduction gear 112. The resistance generator 1 receives power from the rotating shaft 111 of the motor 110 and rotates. Since the motor 110 rotates at high speed, the output member 2 of the resistance generator 1 rotates at high speed. The reduction gear 112 reduces the rotational speed of the output member 2 and rotates the threaded spindle 113 at the reduced rotational speed.

図5は、抵抗発生装置1の分解斜視図である。抵抗発生装置1は、出力部材2、軸受3、軸受保持部材(スペーサー)4、回転摩擦部材(シュー)5、ケース(固定部材)6、弾性変形部材(摩擦抵抗発生摺動部品)7、保持部材8、支持板(ベース)9及び解除部材(動力受け部)10を有する。解除部材10は、モータ110からの動力を受けて回転する。解除部材10は、圧入によりモータ110の回転軸111に係止され、回転軸111と一体に回転する。なお、解除部材10は、ねじ、ピン、セレーションなどの係止部材によりモータ110の回転軸111に係止されていてもよい。   FIG. 5 is an exploded perspective view of the resistance generator 1. The resistance generator 1 includes an output member 2, a bearing 3, a bearing holding member (spacer) 4, a rotational friction member (shoe) 5, a case (fixing member) 6, an elastic deformation member (frictional resistance generating sliding component) 7, and holding A member 8, a support plate (base) 9 and a release member (power receiver) 10 are provided. The release member 10 receives power from the motor 110 and rotates. The release member 10 is engaged with the rotating shaft 111 of the motor 110 by press-fitting, and rotates integrally with the rotating shaft 111. The release member 10 may be locked to the rotation shaft 111 of the motor 110 by a locking member such as a screw, a pin, or a serration.

支持板9は、2本のねじ11によりモータ110に固定される。支持板9の外周部には、複数(本実施例において4つ)の突起9a及び複数の係止部9bが設けられている。突起9aは、回転軸線Xに沿って延在している。弾性変形部材(弾性部材)7は、保持部材8に保持されている。保持部材8の外周部には、複数(本実施例において2つ)の突起8aが設けられている。突起8aは、回転軸線Xに沿って延在している。ケース6は、円筒形状をしている。ケース6は、解除部材10の回りに配置された固定部材である。弾性変形部材7は、保持部材8を介してケース6に固定して配置されている。保持部材8及びケース6は、モータ110の動力を受けずに固定された固定部材である。ケース6は、ケース6の一端部に開口する複数(本実施例において4つ)の溝穴6aが設けられている。また、ケース6は、ケース6の他端部に開口する複数(本実施例において4つ)の溝穴6bが設けられている。溝穴6a及び6bは、回転軸線Xに沿って延在している。保持部材8は、保持部材8の突起8aが支持板9の突起9aと一直線に整列するように、支持板9に隣接して配置される。ケース6は、ケース6の溝穴6aが保持部材8の突起8a及び支持板9の突起9aに嵌合するように、保持部材8及び支持板9に取り付けられる。保持部材8は、ケース6により、支持板9すなわちモータ110に対して回転しないように固定される。   The support plate 9 is fixed to the motor 110 by two screws 11. A plurality of (four in the present embodiment) protrusions 9 a and a plurality of locking portions 9 b are provided on the outer peripheral portion of the support plate 9. The protrusion 9 a extends along the rotation axis X. The elastic deformation member (elastic member) 7 is held by the holding member 8. A plurality of (two in the present embodiment) protrusions 8 a are provided on the outer peripheral portion of the holding member 8. The protrusion 8 a extends along the rotation axis X. The case 6 has a cylindrical shape. The case 6 is a fixing member disposed around the release member 10. The elastic deformation member 7 is fixed to the case 6 via the holding member 8. The holding member 8 and the case 6 are fixing members fixed without receiving the power of the motor 110. The case 6 is provided with a plurality of (four in the present embodiment) slot holes 6 a opening at one end of the case 6. Further, the case 6 is provided with a plurality of (four in the present embodiment) slot holes 6 b opened at the other end of the case 6. The slots 6a and 6b extend along the rotation axis X. The holding member 8 is disposed adjacent to the support plate 9 such that the protrusions 8 a of the holding member 8 are aligned with the protrusions 9 a of the support plate 9. The case 6 is attached to the holding member 8 and the support plate 9 such that the slot 6 a of the case 6 is fitted to the protrusion 8 a of the holding member 8 and the protrusion 9 a of the support plate 9. The holding member 8 is fixed by the case 6 so as not to rotate with respect to the support plate 9, that is, the motor 110.

ケース6の一端部には、複数の係止穴6cが設けられている。支持板9の複数の係止部9bとケース6の複数の係止穴6cは、スナップフィット嵌めを構成する。支持板9の複数の係止部9bとケース6の複数の係止穴6cとのスナップフィット嵌めにより、ケース6は、支持板9すなわちモータ110に対して回転軸線Xの方向に移動しないように保持される。ケース6は、支持板9に固定されるように構成されているが、モータ110そのものに、又は、ハウジング管107に直接固定されるように構成されていてもよい。保持部材8は、弾性変形部材7が回転軸線Xの方向に移動しないように固定し、弾性変形部材7が回転軸線Xの回りに回転しないように固定する固定部材として機能する。   At one end of the case 6, a plurality of locking holes 6c are provided. The plurality of locking portions 9b of the support plate 9 and the plurality of locking holes 6c of the case 6 constitute a snap fit. The case 6 is prevented from moving in the direction of the rotation axis X with respect to the support plate 9, that is, the motor 110 by the snap fit fitting between the plurality of locking portions 9 b of the support plate 9 and the plurality of locking holes 6 c of the case 6. It is held. The case 6 is configured to be fixed to the support plate 9, but may be configured to be fixed to the motor 110 itself or directly to the housing tube 107. The holding member 8 functions as a fixing member that fixes the elastic deformation member 7 so as not to move in the direction of the rotation axis X and that the elastic deformation member 7 does not rotate around the rotation axis X.

出力部材2は、軸受3を介して軸受保持部材4に回転可能に保持されている。回転摩擦部材5は、出力部材2と一体に回転するが、出力部材2に対して回転軸線Xの方向に移動可能に出力部材2に支持されている。軸受保持部材4の外周には、複数(本実施例において4つ)の突起4aが設けられている。突起4aは、回転軸線Xに沿って延在している。出力部材2、軸受3及び回転摩擦部材5が軸受保持部材4に組み付けられた状態で、軸受保持部材4は、軸受保持部材4の突起4aがケース6の溝穴6bに嵌合するように、ケース6に取り付けられる。軸受保持部材4は、ケース6により、支持板9すなわちモータ110に対して回転しないように固定される。   The output member 2 is rotatably held by the bearing holding member 4 via the bearing 3. The rotary friction member 5 rotates integrally with the output member 2, but is supported by the output member 2 so as to be movable in the direction of the rotation axis X with respect to the output member 2. A plurality of (four in the present embodiment) protrusions 4 a are provided on the outer periphery of the bearing holding member 4. The protrusion 4 a extends along the rotation axis X. In a state where the output member 2, the bearing 3 and the rotational friction member 5 are assembled to the bearing holding member 4, the bearing holding member 4 is fitted such that the projection 4 a of the bearing holding member 4 fits in the slot 6 b of the case 6 It is attached to the case 6. The bearing holding member 4 is fixed by the case 6 so as not to rotate with respect to the support plate 9, that is, the motor 110.

出力部材2には、出力軸12が固定されている。出力軸12には、歯車13が設けられている。減速機112の外周部には、複数の突起112aおよび複数の係止部112bが設けられている。ケース6の他端部には、複数の係止穴6dが設けられている。減速機112の複数の係止部112bとケース6の複数の係止穴6dは、スナップフィット嵌めを構成する。減速機112は、減速機112の突起112aがケース6の溝穴6bに嵌合し、減速機112の係止部112bがケース6の係止穴6dにスナップフィット嵌めされるように、ケース6に取り付けられる。減速機112は、ケース6により、支持板9すなわちモータ110に対して回転しないように固定される。また、減速機112の係止部112bとケース6の係止穴6dとのスナップフィット嵌めにより、減速機112、軸受保持部材4及び保持部材8は、モータ110に対して回転軸線Xの方向に移動しないように保持される。出力部材2の歯車13は、減速機112の歯車14と噛合する。   An output shaft 12 is fixed to the output member 2. A gear 13 is provided on the output shaft 12. The outer peripheral portion of the reduction gear 112 is provided with a plurality of protrusions 112 a and a plurality of locking portions 112 b. The other end of the case 6 is provided with a plurality of locking holes 6d. The plurality of locking portions 112 b of the reduction gear 112 and the plurality of locking holes 6 d of the case 6 constitute a snap fit. The case of the reduction gear 112 is such that the projection 112 a of the reduction gear 112 is fitted in the slot 6 b of the case 6 and the locking portion 112 b of the reduction gear 112 is snap fit fitted in the locking hole 6 d of the case 6. Attached to The reduction gear 112 is fixed by the case 6 so as not to rotate with respect to the support plate 9 or the motor 110. Further, due to the snap fit of the locking portion 112 b of the reduction gear 112 and the locking hole 6 d of the case 6, the reduction gear 112, the bearing holding member 4 and the holding member 8 move in the direction of the rotation axis X with respect to the motor 110. It is held so as not to move. The gear 13 of the output member 2 meshes with the gear 14 of the reduction gear 112.

図6は、解除部材10の斜視図である。解除部材10は、円筒状の本体10aと、本体10aに設けられた穴10bと、本体10aから回転軸線Xに垂直な方向へ突出する2つの突出部10cとからなる。突出部10cは、本体10aの半径方向に挿入されたピンで形成されていてもよい。穴10bは、回転軸線Xの方向に延在している。穴10bにモータ110の回転軸111が圧入され、解除部材10は、回転軸111と一体に回転する。   FIG. 6 is a perspective view of the release member 10. The release member 10 comprises a cylindrical main body 10a, a hole 10b provided in the main body 10a, and two projections 10c projecting from the main body 10a in a direction perpendicular to the rotation axis X. The protrusion 10 c may be formed by a pin inserted in the radial direction of the main body 10 a. The holes 10 b extend in the direction of the axis of rotation X. The rotary shaft 111 of the motor 110 is press-fit into the hole 10 b, and the release member 10 rotates integrally with the rotary shaft 111.

図7は、弾性変形部材7と保持部材8の断面図である。本実施例において、弾性変形部材7及び保持部材8は、円環形状である。保持部材8は、半径方向で内方へ延在するツバ部(フランジ部)8bを有する。ツバ部8bの先端部8cは、回転軸線Xの方向に屈曲している。本実施例において、保持部材8は、金属製である。しかし、保持部材8は、必ずしも金属製である必要はない。弾性変形部材7は、回転摩擦部材5に摩擦接触する摩擦接触部7aと、保持部材8の先端部8cに固定される固定部7bとを有する。弾性変形部材7は、回転摩擦部材5が摩擦接触部7aに接触しやすいように、摩擦接触部7aと固定部7bとの間に円環状の傾斜部(テーパ―部)7cが設けられている。摩擦接触部7aは、全周にわたって連続的に均一に設けられている。しかし、摩擦接触部7aは、周方向に間隔を空けて断続的に設けられていてもよい。弾性変形部材7は、エラストマー、ゴム、ウレタン、樹脂又は金属(例えば、板ばね)などからつくられている。弾性変形部材7及び保持部材8は、樹脂材料に一部金属材料が組み込まれているインサート成形、または、金属材料に一部樹脂が組み込まれているアウトサート成形により一体に形成されていてもよい。弾性変形部材7と保持部材8との間には、弾性変形部材7の変形を容易にするために、空間15が設けられている。しかし、弾性変形部材7が十分に変形可能な場合、空間15は、必ずしも必要ない。   FIG. 7 is a cross-sectional view of the elastic deformation member 7 and the holding member 8. In the present embodiment, the elastic deformation member 7 and the holding member 8 have an annular shape. The holding member 8 has a radially inward extending flange portion 8b. The tip 8 c of the flange 8 b is bent in the direction of the rotation axis X. In the present embodiment, the holding member 8 is made of metal. However, the holding member 8 does not necessarily have to be made of metal. The elastic deformation member 7 has a friction contact portion 7 a in frictional contact with the rotary friction member 5 and a fixing portion 7 b fixed to the tip 8 c of the holding member 8. The elastic deformation member 7 is provided with an annular inclined portion (taper portion) 7c between the friction contact portion 7a and the fixing portion 7b so that the rotary friction member 5 easily contacts the friction contact portion 7a. . The frictional contact portion 7a is provided continuously and uniformly over the entire circumference. However, the frictional contact portions 7a may be provided intermittently at intervals in the circumferential direction. The elastic deformation member 7 is made of an elastomer, rubber, urethane, resin or metal (for example, a leaf spring). The elastic deformation member 7 and the holding member 8 may be integrally formed by insert molding in which a metal material is partially incorporated in a resin material, or outsert molding in which a resin is partially incorporated in a metal material. . A space 15 is provided between the elastic deformation member 7 and the holding member 8 in order to facilitate deformation of the elastic deformation member 7. However, if the elastically deformable member 7 is sufficiently deformable, the space 15 is not necessarily required.

なお、弾性変形部材7は、保持部材8を設けることなく直接にケース6に固定されていてもよい。あるいは、弾性変形部材7は、保持部材8を設けることなく直接に支持板9に固定されていてもよい。または、弾性変形部材7がハウジング管107に固定されていてもよい。または、弾性変形部材7は、モータ110そのものに固定されてもよい。または、弾性変形部材7は、軸受保持部材4に固定されていてもよい。弾性変形部材7のケース6、支持板9、ハウジング管107又は軸受保持部材4への固定は、圧入であってもよい。保持部材8、ケース6、支持板9、ハウジング管107、モータ110又は軸受保持部材4は、これらのいずれかに弾性変形部材7が固定して配置された場合、動力を受けずに固定された固定部材として機能する。弾性変形部材7は、モータ110に対して回転しないように且つ移動しないように固定されていればよい。なお、弾性変形部材7及び保持部材8の代わりに、市販のオイルシールを用いることもできる。市販のオイルシールは、安価、安定性、長寿命及び低騒音という効果を有する。ただし、本実施例に用いるオイルシールは、オイルをシールする機能を発揮する必要はない。   The elastic deformation member 7 may be directly fixed to the case 6 without providing the holding member 8. Alternatively, the elastic deformation member 7 may be directly fixed to the support plate 9 without providing the holding member 8. Alternatively, the elastically deformable member 7 may be fixed to the housing tube 107. Alternatively, the elastic deformation member 7 may be fixed to the motor 110 itself. Alternatively, the elastically deformable member 7 may be fixed to the bearing holding member 4. Fixing of the elastically deformable member 7 to the case 6, the support plate 9, the housing tube 107 or the bearing holding member 4 may be a press fit. The holding member 8, the case 6, the support plate 9, the housing tube 107, the motor 110 or the bearing holding member 4 are fixed without receiving power when the elastic deformation member 7 is fixed and disposed on any of them. It functions as a fixing member. The elastic deformation member 7 may be fixed so as not to rotate with respect to the motor 110 and to prevent movement. A commercially available oil seal can be used instead of the elastic deformation member 7 and the holding member 8. Commercially available oil seals have the advantages of low cost, stability, long life and low noise. However, the oil seal used in the present embodiment does not have to exhibit the function of sealing oil.

図8は、回転摩擦部材5を示す図である。図8(a)は、回転摩擦部材5の側面図である。図8(b)は、図8(a)のVIIIB−VIIIB線に沿って取った回転摩擦部材5の断面図である。図8(c)は、回転摩擦部材5のカム部16の側から見た回転摩擦部材5の斜視図である。図8(d)は、回転摩擦部材5のスプライン穴17の側から見た回転摩擦部材5の斜視図である。回転摩擦部材5は、解除部材10に係合するカム部16と、出力部材2のスプライン軸(スプライン部)22に噛合するスプライン穴(スプライン部)17と、弾性変形部材7に摩擦接触する摩擦接触部18と、圧縮ばね(付勢部材)21を受けるばね座(受け部)19と、円環状突起部(係止部)20とを有する。回転摩擦部材5は、回転軸線Xの回りに概略回転対称な形状を有する同心構造である。   FIG. 8 is a view showing the rotary friction member 5. FIG. 8A is a side view of the rotary friction member 5. FIG. 8B is a cross-sectional view of the rotary friction member 5 taken along line VIIIB-VIIIB in FIG. FIG. 8C is a perspective view of the rotary friction member 5 as viewed from the side of the cam portion 16 of the rotary friction member 5. FIG. 8D is a perspective view of the rotary friction member 5 viewed from the side of the spline hole 17 of the rotary friction member 5. The rotary friction member 5 includes a cam portion 16 engaged with the release member 10, a spline hole (spline portion) 17 meshed with a spline shaft (spline portion) 22 of the output member 2, and friction which frictionally contacts the elastic deformation member 7. It has a contact portion 18, a spring seat (receiving portion) 19 that receives a compression spring (biasing member) 21, and an annular projection (locking portion) 20. The rotary friction member 5 is a concentric structure having a substantially rotationally symmetric shape around the rotation axis X.

カム部16は、回転摩擦部材5の一端部で回転摩擦部材5の内部に設けられている。カム部16は、解除部材10と係合する係合部である。カム部16は、複数(本実施例においては4つ)のカム面16aと、複数(本実施例においては2つ)の回転方向当接部16bと、複数(本実施例においては2つ)の軸方向当接部16cを有する。カム面16aは、解除部材10の突出部10cと係合する。モータ110が回転し、解除部材10が回転摩擦部材5に対して相対的に回転すると、解除部材10の突出部10cとカム面16aとのカム作用により、回転摩擦部材5を回転軸線Xの方向へ滑り移動させる。回転方向当接部16bは、解除部材10の突出部10cに当接して、回転摩擦部材5に対する解除部材10の相対回転量を規制する。解除部材10の突出部10cが回転方向当接部16bに当接することにより、モータ110の回転を回転摩擦部材5へ伝達し、回転摩擦部材5を回転させる。軸方向当接部16cは、モータ110が停止しているときに、後述する圧縮ばね21のばね力により解除部材10の突出部10cに当接して、回転摩擦部材5の回転軸線Xの方向の移動を規制する。   The cam portion 16 is provided inside the rotary friction member 5 at one end of the rotary friction member 5. The cam portion 16 is an engaging portion that engages with the release member 10. The cam portion 16 has a plurality of (four in the present embodiment) cam surfaces 16a, a plurality (two in the present embodiment) rotational direction contact portions 16b, and a plurality (two in the present embodiment) Axial contact portion 16c. The cam surface 16 a engages with the protrusion 10 c of the release member 10. When the motor 110 rotates and the release member 10 rotates relative to the rotation friction member 5, the rotation friction member 5 is moved in the direction of the rotation axis X by the cam action of the projection 10c of the release member 10 and the cam surface 16a. Slide to move. The rotational direction contact portion 16 b abuts on the protrusion 10 c of the release member 10 and regulates the relative rotation amount of the release member 10 with respect to the rotational friction member 5. When the protrusion 10 c of the release member 10 abuts on the rotation direction contact portion 16 b, the rotation of the motor 110 is transmitted to the rotation friction member 5 to rotate the rotation friction member 5. When the motor 110 is stopped, the axial contact portion 16c is in contact with the projection 10c of the release member 10 by the spring force of the compression spring 21 described later, and in the direction of the rotation axis X of the rotational friction member 5 Regulate movement.

スプライン穴17は、カム部16が設けられた回転摩擦部材5の一端部と反対の他端部に設けられている。スプライン穴17は、内周に複数の歯17aが設けられている。歯17aは、回転軸線Xに平行に延在するキー形状に形成されている。スプライン穴17の複数の歯17aは、出力部材2のスプライン軸22の複数の歯22aと噛合して、回転摩擦部材5の回転トルクを出力部材2へ伝達するとともに、出力部材2に対する回転摩擦部材5の回転軸線Xの方向の滑り移動を可能にする。   The spline hole 17 is provided at the other end opposite to the one end of the rotary friction member 5 provided with the cam portion 16. The spline hole 17 is provided with a plurality of teeth 17 a on the inner periphery. The teeth 17 a are formed in a key shape extending in parallel with the rotation axis X. The plurality of teeth 17 a of the spline hole 17 mesh with the plurality of teeth 22 a of the spline shaft 22 of the output member 2 to transmit the rotation torque of the rotation friction member 5 to the output member 2 and the rotation friction member for the output member 2 Allowing a sliding movement in the direction of the axis of rotation X of 5.

回転摩擦部材5は、解除部材10がモータ110の動力を受けて回転するのに伴い、弾性変形部材7と接触する接触位置と、弾性変形部材7から離れる離間位置との間を移動可能である。回転摩擦部材5の摩擦接触部18は、弾性変形部材7の摩擦接触部7aに接離する。摩擦接触部18は、摩擦接触部7aに接触しているときに、摩擦接触部7aにより緊締(締め付け)される。摩擦接触部18は、摩擦接触部7aに接触しやすいように、摩擦接触部18から回転摩擦部材5の一端部へ向って傾斜する円環状の傾斜部(テーパ―部)18aが設けられている。回転摩擦部材5が回転軸線Xの方向へ移動して摩擦接触部18が摩擦接触部7aに接触するときに、回転摩擦部材5の傾斜部18aが弾性変形部材7の傾斜部7cに当接するので、摩擦接触部18と摩擦接触部7aの接触を容易にすることができる。摩擦接触部18は、全周にわたって連続的に均一に設けられている。しかし、摩擦接触部18は、周方向に間隔を空けて断続的に設けられていてもよい。本実施例においては、摩擦接触部18は、カム部16の外側に設けられている。回転軸線Xの方向において、摩擦接触部18は、カム部16と重なり合う位置に配置されている。よって、回転摩擦部材5の回転軸線Xの方向の長さを短くすることができ、ひいては、抵抗発生装置1を小型化することができる。   The rotation friction member 5 is movable between a contact position in contact with the elastic deformation member 7 and a separation position away from the elastic deformation member 7 as the release member 10 is rotated by receiving the power of the motor 110. . The frictional contact portion 18 of the rotational friction member 5 contacts and separates the frictional contact portion 7 a of the elastically deformable member 7. The frictional contact portion 18 is tightened by the frictional contact portion 7a when in contact with the frictional contact portion 7a. The frictional contact portion 18 is provided with an annular inclined portion (taper portion) 18a which is inclined from the frictional contact portion 18 toward one end of the rotary friction member 5 so as to easily contact the frictional contact portion 7a. . Since the inclined portion 18a of the rotational friction member 5 abuts on the inclined portion 7c of the elastic deformation member 7 when the rotational friction member 5 moves in the direction of the rotational axis X and the frictional contact portion 18 contacts the frictional contact portion 7a. The contact between the frictional contact portion 18 and the frictional contact portion 7a can be facilitated. The frictional contact portion 18 is provided continuously and uniformly over the entire circumference. However, the frictional contact portions 18 may be provided intermittently at intervals in the circumferential direction. In the present embodiment, the friction contact portion 18 is provided on the outside of the cam portion 16. In the direction of the axis of rotation X, the friction contact 18 is arranged at a position overlapping the cam 16. Therefore, the length of the rotational friction member 5 in the direction of the rotation axis X can be shortened, and the resistance generator 1 can be miniaturized.

図9は、出力部材2と回転摩擦部材5を示す図である。図9(a)は、出力部材2に組み込まれた回転摩擦部材5を示す図である。図9(b)は、出力部材2に回転摩擦部材5を組み込む前の状態を示す図である。出力部材2は、軸受3を介して軸受保持部材4に回転可能に保持されている。出力部材2は、軸受3を保持する溝穴2aが設けられている(後述の図10を参照)。また、軸受保持部材4は、軸受3を保持する溝穴4bが設けられている。溝穴2aは、出力部材2が矢印A又は矢印Bで示す方向へ移動することを規制する。溝穴2aは、出力部材2が減速機112側へ又はモータ110側へ移動することを規制する軸線方向ストッパーとして機能する。出力部材2は、複数の歯22aが設けられたスプライン軸22と、圧縮ばね21を受けるばね座(受け部)23(図4参照)と、回転軸線Xの方向へ延在する二つの腕部(係止部)24とを有する。図9(b)に示すように、圧縮ばね21を出力部材2のばね座23と回転摩擦部材5のばね座19との間に配置する。回転摩擦部材5を矢印Aで示す方向に出力部材2へ向って押し込み、回転摩擦部材5のスプライン穴17をスプライン軸22に嵌合させる。回転摩擦部材5は、スプライン軸22上を回転軸線Xに沿って摺動可能である。さらに、回転摩擦部材5を矢印Aで示す方向に出力部材2へ向って押し込むと、出力部材2の腕部24の爪部24aが回転摩擦部材5の円環状突起部20を乗り越える。爪部24aが円環状突起部20を乗り越えるために腕部24が撓みやすいように、出力部材2に溝2bが形成されている(後述の図10参照)。出力部材2へ向って回転摩擦部材5を押し込む押し込み力を解除すると、回転摩擦部材5は、圧縮ばね21のばね力(付勢力)により矢印Bで示す方向に付勢される。圧縮ばね21のばね力(付勢力)により出力部材2の腕部24の爪部24aが回転摩擦部材5の円環状突起部20を係止するので、圧縮ばね21及び回転摩擦部材5は、出力部材2に保持される(図9(a))。   FIG. 9 is a view showing the output member 2 and the rotational friction member 5. FIG. 9A is a view showing the rotary friction member 5 incorporated in the output member 2. FIG. 9 (b) is a view showing a state before the rotary friction member 5 is incorporated into the output member 2. The output member 2 is rotatably held by the bearing holding member 4 via the bearing 3. The output member 2 is provided with a slot 2a for holding the bearing 3 (see FIG. 10 described later). Further, the bearing holding member 4 is provided with a slot 4 b for holding the bearing 3. The slot 2 a restricts the movement of the output member 2 in the direction indicated by the arrow A or the arrow B. The slot 2 a functions as an axial stopper that restricts the movement of the output member 2 toward the reduction gear 112 or the motor 110. The output member 2 has a spline shaft 22 provided with a plurality of teeth 22a, a spring seat (receiving portion) 23 (see FIG. 4) for receiving the compression spring 21, and two arms extending in the direction of the rotation axis X (Locking portion) 24 is provided. As shown in FIG. 9B, the compression spring 21 is disposed between the spring seat 23 of the output member 2 and the spring seat 19 of the rotary friction member 5. The rotary friction member 5 is pushed toward the output member 2 in the direction indicated by the arrow A, and the spline hole 17 of the rotary friction member 5 is fitted to the spline shaft 22. The rotary friction member 5 is slidable along the rotational axis X on the spline shaft 22. Further, when the rotary friction member 5 is pushed toward the output member 2 in the direction indicated by the arrow A, the claws 24 a of the arm 24 of the output member 2 ride over the annular projection 20 of the rotary friction member 5. A groove 2 b is formed in the output member 2 so that the arm 24 is easily bent so that the claw 24 a passes over the annular projection 20 (see FIG. 10 described later). When the pressing force for pushing the rotary friction member 5 toward the output member 2 is released, the rotary friction member 5 is urged in the direction indicated by the arrow B by the spring force (biasing force) of the compression spring 21. Since the claws 24 a of the arm 24 of the output member 2 engage the annular projection 20 of the rotary friction member 5 by the spring force (biasing force) of the compression spring 21, the compression spring 21 and the rotary friction member 5 output It is held by the member 2 (FIG. 9 (a)).

回転摩擦部材5を出力部材2に組み込む際に、圧縮ばね21を圧縮し圧縮ばね21のばね力により爪部24aが円環状突起部20を係止するので、出力部材2、圧縮ばね21及び回転摩擦部材5がばらばらにならないように組み立てることができる。出力部材2、軸受3、軸受保持部材4、圧縮ばね21及び回転摩擦部材5の組立体を安定して、ケース6へ挿入することができる。組立体をケース6へ挿入すると、図4(a)に示すように回転摩擦部材5が弾性変形部材7へ挿入され、摩擦接触部18と摩擦接触部7aが接触する。本実施例においては、回転摩擦部材5の外側に弾性変形部材7が配置され、弾性変形部材7の内側に弾性変形しない金属製の回転摩擦部材5が配置される。   When the rotary friction member 5 is incorporated into the output member 2, the compression spring 21 is compressed, and the claw portion 24 a locks the annular projection 20 by the spring force of the compression spring 21, so the output member 2, the compression spring 21 and the rotation It can assemble so that friction member 5 may not fall apart. The assembly of the output member 2, the bearing 3, the bearing holding member 4, the compression spring 21 and the rotational friction member 5 can be stably inserted into the case 6. When the assembly is inserted into the case 6, as shown in FIG. 4A, the rotary friction member 5 is inserted into the elastic deformation member 7, and the frictional contact portion 18 and the frictional contact portion 7a come into contact. In the present embodiment, the elastic deformation member 7 is disposed outside the rotational friction member 5, and the metal rotational friction member 5 not being elastically deformed is disposed inside the elastic deformation member 7.

(抵抗発生装置の動作)
以下、図4、図10及び図11を参照して、抵抗発生装置1の動作を説明する。図10は、回転摩擦部材5と弾性変形部材7の拡大断面図である。図10(a)は、回転摩擦部材5が弾性変形部材7に接触している状態を示す。図10(b)は、回転摩擦部材5が弾性変形部材7から離間している状態を示す。図11は、モータ110から見た回転摩擦部材5と解除部材10を示す図である。図11(a)は、解除部材10の突出部10cが回転摩擦部材5の軸方向当接部16cに当接している状態を示す。図11(b)は、解除部材10の突出部10cが回転摩擦部材5の回転方向当接部16bに当接している状態を示す。
(Operation of resistance generator)
Hereinafter, the operation of the resistance generating device 1 will be described with reference to FIGS. 4, 10 and 11. FIG. 10 is an enlarged sectional view of the rotational friction member 5 and the elastic deformation member 7. FIG. 10A shows a state in which the rotational friction member 5 is in contact with the elastic deformation member 7. FIG. 10 (b) shows a state in which the rotational friction member 5 is separated from the elastic deformation member 7. FIG. 11 is a view showing the rotation friction member 5 and the release member 10 as viewed from the motor 110. As shown in FIG. FIG. 11A shows a state in which the protrusion 10 c of the release member 10 is in contact with the axial contact portion 16 c of the rotary friction member 5. FIG. 11 (b) shows a state in which the protrusion 10 c of the release member 10 is in contact with the rotational direction contact portion 16 b of the rotary friction member 5.

モータ110が停止してバックドア200が任意の位置に停止しているとき、抵抗発生装置1は、図4(a)及び図10(a)に示す状態にある。また、ユーザがバックドア200に手をかけてバックドア200を手動で開閉するときも、抵抗発生装置1は、図4(a)及び図10(a)に示す状態にある。回転摩擦部材5は、圧縮ばね21のばね力により矢印Bで示す方向に付勢されている。このとき、図11(a)に示すように、解除部材10の突出部10cは、回転摩擦部材5の軸方向当接部16cに当接して回転摩擦部材5の回転軸線Xの方向への移動を規制する。解除部材10の突出部10cは、回転摩擦部材5のモータ110へ向う移動を所定の位置で規制するストッパーとして機能する。なお、突出部10cと軸方向当接部16cとの当接の代わりに、回転摩擦部材5の円環状突起部20が出力部材2の腕部24の爪部24aに当接することにより、回転摩擦部材5の回転軸線Xの方向への移動を規制してもよい。この場合、出力部材2の腕部24の爪部24aがストッパーとして機能する。あるいは、モータ110の回転軸111にストッパーの機能をもたせてもよい。   When the motor 110 is stopped and the back door 200 is stopped at an arbitrary position, the resistance generator 1 is in the state shown in FIGS. 4 (a) and 10 (a). In addition, even when the user hands the back door 200 and manually opens and closes the back door 200, the resistance generating device 1 is in the state illustrated in FIGS. 4A and 10A. The rotary friction member 5 is biased in the direction indicated by the arrow B by the spring force of the compression spring 21. At this time, as shown in FIG. 11A, the projecting portion 10c of the releasing member 10 abuts on the axial contact portion 16c of the rotary friction member 5 to move the rotary friction member 5 in the direction of the rotation axis X Regulate. The protrusion 10 c of the release member 10 functions as a stopper for restricting the movement of the rotary friction member 5 toward the motor 110 at a predetermined position. Note that, instead of the contact between the projecting portion 10c and the axial contact portion 16c, the annular projection 20 of the rotational friction member 5 contacts the claw portion 24a of the arm 24 of the output member 2 to thereby achieve rotational friction. The movement of the member 5 in the direction of the rotation axis X may be restricted. In this case, the claws 24 a of the arm 24 of the output member 2 function as a stopper. Alternatively, the rotating shaft 111 of the motor 110 may have the function of a stopper.

解除部材10の突出部10cが回転摩擦部材5の軸方向当接部16cに当接している状態において、弾性変形部材7の摩擦接触部7aは、回転摩擦部材5の摩擦接触部18に接触して摩擦接触部7aの内径が拡大するように弾性変形している。弾性変形部材7の摩擦接触部7aの内周面は、弾性変形部材7の弾性力により回転摩擦部材5の摩擦接触部18の外周面に所定の接触圧(緊迫力)で接触する接触状態にある。抵抗発生装置1は、停止保持状態(保持力付与状態)にある。弾性変形部材7の摩擦接触部7aは、回転摩擦部材5の摩擦接触部18を掴んでいるので、この状態で、回転摩擦部材5を回転させようとすると、回転摩擦部材5の摩擦接触部18と弾性変形部材7の摩擦接触部7aとの圧接により摩擦抵抗力が発生する。   In a state where the protrusion 10 c of the release member 10 is in contact with the axial contact portion 16 c of the rotation friction member 5, the friction contact portion 7 a of the elastic deformation member 7 contacts the friction contact portion 18 of the rotation friction member 5. Is elastically deformed so that the inner diameter of the frictional contact portion 7a is enlarged. The inner peripheral surface of the frictional contact portion 7a of the elastic deformation member 7 is brought into contact with the outer peripheral surface of the frictional contact portion 18 of the rotary friction member 5 by the elastic force of the elastic deformation member 7 with a predetermined contact pressure (tension force). is there. The resistance generator 1 is in the stop holding state (holding force application state). The frictional contact portion 7 a of the elastic deformation member 7 grips the frictional contact portion 18 of the rotary friction member 5. Therefore, when trying to rotate the rotary friction member 5 in this state, the frictional contact portion 18 of the rotary friction member 5 As a result of pressure contact between the elastic deformation member 7 and the frictional contact portion 7a of the elastic deformation member 7, a frictional resistance force is generated.

開状態にあるバックドア200に風や雪などの外的負荷がかかりバックドア200が開閉しようとすると、ねじ付きスピンドル113が回転しようとする。ねじ付きスピンドル113の回転運動は、減速機112を介して出力部材2を回転させようとする。出力部材2のスプライン軸22は、回転摩擦部材5のスプライン穴17に噛合しているので、出力部材2は、回転摩擦部材5を回転させようとする。回転摩擦部材5の摩擦接触部18は、弾性変形部材7の摩擦接触部7aに圧接しているので、ねじ付きスピンドル113の回転運動に対する摩擦抵抗が発生する。よって、抵抗発生装置1は、バックドア200の任意の位置での開状態を保持することができる。一方、抵抗発生装置1が抵抗を発生している状態でもユーザがバックドア200に手をかけてバックドア200を開閉できるように、抵抗発生装置1の抵抗は設定されている。抵抗発生装置1の抵抗の大きさは、弾性変形部材7の摩擦接触部7aと回転摩擦部材5の摩擦接触部18との締め代を変更することにより容易に設定することができる。弾性変形部材7は、摩擦接触部18へ接触圧を高めるため、又はその接触圧を維持するために、弾性変形部材7にばね(付勢部材)を設けてもよい。ばねは、弾性変形部材7の外周にわたって延在する環形状をしていてもよい。しかし、ばねは、基本的になくてよい。   When an external load such as wind or snow is applied to the open back door 200 and the back door 200 tries to open or close, the threaded spindle 113 tries to rotate. The rotational movement of the threaded spindle 113 attempts to rotate the output member 2 via the reduction gear 112. Since the spline shaft 22 of the output member 2 is in mesh with the spline hole 17 of the rotary friction member 5, the output member 2 tries to rotate the rotary friction member 5. Since the frictional contact portion 18 of the rotational friction member 5 is in pressure contact with the frictional contact portion 7 a of the elastic deformation member 7, frictional resistance to the rotational movement of the threaded spindle 113 is generated. Thus, the resistance generator 1 can hold the open state of the back door 200 at an arbitrary position. On the other hand, the resistance of the resistance generating device 1 is set so that the user can open the back door 200 by putting a hand on the back door 200 even when the resistance generating device 1 is generating resistance. The magnitude of the resistance of the resistance generating device 1 can be easily set by changing the interference between the frictional contact portion 7 a of the elastic deformation member 7 and the frictional contact portion 18 of the rotary friction member 5. The elastic deformation member 7 may be provided with a spring (biasing member) on the elastic deformation member 7 in order to increase the contact pressure to the friction contact portion 18 or to maintain the contact pressure. The spring may have an annular shape extending around the outer periphery of the elastic deformation member 7. However, the spring does not have to be basically.

弾性変形部材7の摩擦接触部7aと回転摩擦部材5の摩擦接触部18は、回転軸線Xに沿う断面において平坦部を有していてもよい。すなわち、弾性変形部材7の摩擦接触部7aと回転摩擦部材5の摩擦接触部18は、それぞれ円筒形状に形成されていてもよい。本実施例において、弾性変形部材7の摩擦接触部7aと回転摩擦部材5の摩擦接触部18は、全周にわたって連続的に且つ均一に設けられている。摩擦接触部7a及び18を全周にわたって連続的に且つ均一に設けることにより、回転摩擦部材5が回転する際に発生する音を低減することができる。   The friction contact portion 7 a of the elastic deformation member 7 and the friction contact portion 18 of the rotary friction member 5 may have a flat portion in a cross section along the rotation axis X. That is, the friction contact portion 7a of the elastic deformation member 7 and the friction contact portion 18 of the rotary friction member 5 may be formed in a cylindrical shape, respectively. In the present embodiment, the frictional contact portion 7a of the elastic deformation member 7 and the frictional contact portion 18 of the rotary friction member 5 are provided continuously and uniformly over the entire circumference. By providing the frictional contact portions 7a and 18 continuously and uniformly over the entire circumference, it is possible to reduce the noise generated when the rotary friction member 5 rotates.

バックドア200の開閉によるねじ付きスピンドル113の正転及び逆転のいずれの場合にも、抵抗発生装置1によりねじ付きスピンドル113の回転運動に対する抵抗を発生することができる。抵抗発生装置1は、停止時も手動による回転時も常にほぼ安定した摩擦抵抗力を発生することができる。   In either case of forward or reverse rotation of the threaded spindle 113 by opening and closing the back door 200, the resistance generator 1 can generate resistance to the rotational movement of the threaded spindle 113. The resistance generator 1 can generate a substantially stable frictional resistance at all times both at the time of stopping and at the time of manual rotation.

モータ110が回転すると、回転軸111と一体に解除部材(保持抵抗解除部材)10が回転する。解除部材10は、図11(b)に示すように、回転摩擦部材5に対して所定の角度だけ相対的に回転する。解除部材10が回転するときに、解除部材10の突出部10cは、回転摩擦部材5のカム部16のカム面16aの上へ乗り上げる。カム面16aは、軸方向当接部16cと回転方向当接部16bとの間に形成された傾斜面である。カム面16aは、軸方向当接部16cから回転方向当接部16bまでモータ110へ向って傾斜している。解除部材10は、回転軸線Xの方向へ移動しないように回転軸111に固定されているので、解除部材10の回転により突出部10cがカム面16aの上へ乗り上げると、突出部10cは、圧縮ばね21のばね力(付勢力)に抗して回転摩擦部材5を矢印Aで示す方向へ移動させる。回転摩擦部材5は、スプライン穴17と出力部材2のスプライン軸22との係合により、回転軸線Xに沿って矢印Aで示す方向へ出力部材2に対して移動する。   When the motor 110 rotates, the release member (holding resistance release member) 10 rotates integrally with the rotating shaft 111. The release member 10 rotates relative to the rotary friction member 5 by a predetermined angle, as shown in FIG. When the release member 10 rotates, the protrusion 10 c of the release member 10 rides on the cam surface 16 a of the cam portion 16 of the rotational friction member 5. The cam surface 16a is an inclined surface formed between the axial contact portion 16c and the rotational direction contact portion 16b. The cam surface 16a is inclined toward the motor 110 from the axial contact portion 16c to the rotational direction contact portion 16b. The release member 10 is fixed to the rotating shaft 111 so as not to move in the direction of the rotation axis X. Therefore, when the protrusion 10 c rides on the cam surface 16 a by rotation of the release member 10, the protrusion 10 c compresses The rotary friction member 5 is moved in the direction indicated by the arrow A against the spring force (biasing force) of the spring 21. The rotational friction member 5 moves relative to the output member 2 in the direction indicated by the arrow A along the rotation axis X due to the engagement between the spline hole 17 and the spline shaft 22 of the output member 2.

モータ110が回転しているとき、抵抗発生装置1は、図4(b)及び図10(b)に示す状態にある。本実施例において、回転摩擦部材5の回転軸線Xの方向の移動量は、弾性変形部材7の摩擦接触部7aと回転摩擦部材5の摩擦接触部18との接触部の回転軸線Xの方向の長さより大きい。従って、モータ110が回転して回転摩擦部材5が矢印Aで示す方向へ移動すると、回転摩擦部材5の摩擦接触部18は、弾性変形部材7の摩擦接触部7aから離れる。これによって、弾性変形部材7は、摩擦接触部7aと回転摩擦部材5の摩擦接触部18との接触を解除する解除状態になる。従って、回転摩擦部材5及び出力部材2の回転運動に対する抵抗がなくなる。抵抗発生装置1は、モータ110による作動許容状態(保持力解除状態)になる。弾性変形部材7の摩擦接触部7aと回転摩擦部材5の摩擦接触部18が非接触状態になるので、モータ110の出力損失が無くなる。   When the motor 110 is rotating, the resistance generator 1 is in the state shown in FIGS. 4 (b) and 10 (b). In the present embodiment, the amount of movement of the rotational friction member 5 in the direction of the rotation axis X is in the direction of the rotation axis X of the contact portion between the frictional contact portion 7 a of the elastic deformation member 7 and the frictional contact portion 18 of the rotational friction member 5. Greater than length. Therefore, when the motor 110 rotates and the rotary friction member 5 moves in the direction indicated by the arrow A, the frictional contact portion 18 of the rotary friction member 5 separates from the frictional contact portion 7 a of the elastic deformation member 7. As a result, the elastically deformable member 7 is in a released state in which the contact between the frictional contact portion 7 a and the frictional contact portion 18 of the rotary friction member 5 is released. Therefore, the resistance to the rotational movement of the rotary friction member 5 and the output member 2 is eliminated. The resistance generator 1 is in an operation permitted state (holding force released state) by the motor 110. Since the frictional contact portion 7a of the elastic deformation member 7 and the frictional contact portion 18 of the rotary friction member 5 are not in contact with each other, the output loss of the motor 110 is eliminated.

モータ110により解除部材10が回転すると、図11(b)に示すように、解除部材10の突出部10cは、回転摩擦部材5のカム部16の回転方向当接部16bに当接する。突出部10cと回転方向当接部16bとの当接により、回転摩擦部材5は、解除部材10と一体となって回転する。突出部10cと回転方向当接部16bは、解除部材10の回転を回転摩擦部材5へ伝達する回転伝達機構を構成する。回転摩擦部材5の回転トルクは、スプライン穴17と出力部材2のスプライン軸22との係合により、出力部材2へ伝達される。従って、出力部材2は、回転摩擦部材5とともに回転する。このとき、弾性変形部材7は、摩擦接触部7aと回転摩擦部材5の摩擦接触部18との接触を解除する解除状態にあるので、出力部材2は、保持抵抗なしに回転することができる。スプライン穴17とスプライン軸22は、回転摩擦部材5の回転を出力部材2へ伝える回転伝達手段として機能する。出力部材2の出力軸12に設けられた歯車13は、減速機112の歯車14と噛合し、出力部材2の回転運動を減速機112へ伝達する。   When the release member 10 is rotated by the motor 110, as shown in FIG. 11B, the projection 10c of the release member 10 abuts on the rotational direction contact portion 16b of the cam portion 16 of the rotational friction member 5. The rotational friction member 5 rotates integrally with the release member 10 due to the contact between the protrusion 10 c and the rotational direction contact portion 16 b. The projecting portion 10 c and the rotational direction contact portion 16 b constitute a rotation transmission mechanism for transmitting the rotation of the release member 10 to the rotational friction member 5. The rotational torque of the rotational friction member 5 is transmitted to the output member 2 by the engagement between the spline hole 17 and the spline shaft 22 of the output member 2. Accordingly, the output member 2 rotates with the rotary friction member 5. At this time, since the elastic deformation member 7 is in the release state for releasing the contact between the friction contact portion 7a and the friction contact portion 18 of the rotary friction member 5, the output member 2 can rotate without holding resistance. The spline hole 17 and the spline shaft 22 function as a rotation transmission means for transmitting the rotation of the rotary friction member 5 to the output member 2. The gear 13 provided on the output shaft 12 of the output member 2 meshes with the gear 14 of the reduction gear 112 to transmit the rotational motion of the output member 2 to the reduction gear 112.

出力部材2の回転は、出力部材2の歯車13から減速機112の歯車14へ伝達されるので、減速機112は、ねじ付きスピンドル113を回転させる。それによって、バックドア200がモータ110により開閉される。本実施例においては、モータ110の正転又は逆転のいずれの場合においても、解除部材10は、弾性変形部材7と回転摩擦部材5との係合を解除するとともに回転摩擦部材5を回転させる。よって、モータ110は、解除部材10及び回転摩擦部材5を介して出力部材2を保持抵抗なしに回転させることができる。   Since the rotation of the output member 2 is transmitted from the gear 13 of the output member 2 to the gear 14 of the reduction gear 112, the reduction gear 112 rotates the threaded spindle 113. Thereby, the back door 200 is opened and closed by the motor 110. In the present embodiment, in either case of normal rotation or reverse rotation of the motor 110, the release member 10 releases the engagement between the elastic deformation member 7 and the rotation friction member 5 and rotates the rotation friction member 5. Thus, the motor 110 can rotate the output member 2 without holding resistance via the release member 10 and the rotational friction member 5.

モータ110の回転が停止すると、圧縮ばね21のばね力により回転摩擦部材5を図10の矢印Bで示す方向へ移動させて、抵抗発生装置1を、回転摩擦部材5が弾性変形部材7に接触して保持抵抗を発生する保持状態にする。圧縮ばね21のばね力により回転摩擦部材5の摩擦接触部18が弾性変形部材7の摩擦接触部7aに接触しやすくするために、摩擦接触部7a及び回転摩擦部材5に傾斜部7c及び18aがそれぞれ設けられている。圧縮ばね21は、回転摩擦部材5が弾性変形部材7から離れた保持解除状態から保持状態へ復帰させる復帰手段として機能する。このとき、回転摩擦部材5が保持解除状態から保持状態へ戻るのに伴い、解除部材10およびモータ110も保持状態のときの位置まで戻る。   When the rotation of the motor 110 is stopped, the rotational friction member 5 is moved in the direction indicated by the arrow B in FIG. 10 by the spring force of the compression spring 21 to contact the resistance generating device 1 with the elastic deformation member 7. And a holding state to generate a holding resistance. In order to make the frictional contact portion 18 of the rotational friction member 5 contact the frictional contact portion 7 a of the elastic deformation member 7 easily by the spring force of the compression spring 21, the inclined portions 7 c and 18 a are formed on the frictional contact portion 7 a and the rotational friction member 5. Each is provided. The compression spring 21 functions as a return means for returning the rotational friction member 5 from the holding release state away from the elastic deformation member 7 to the holding state. At this time, as the rotary friction member 5 returns from the holding release state to the holding state, the releasing member 10 and the motor 110 also return to the position in the holding state.

本実施例によれば、金属製(剛体)の回転摩擦部材5の外側に、固定された弾性変形部材7が配置された構成とすることができる。回転摩擦部材5の同心構造と弾性変形部材のゴムの減衰効果により、原理的に高速回転に対して有利な構造とすることができる。回転摩擦部材5をモータ110と同じ回転速度で回転させた場合であっても、作動音を低減することができる。回転摩擦部材5の回りに環状の弾性変形部材7を配置したことにより、寿命・耐久性や性能安定など量産品質確保への短期対応が可能で、簡素な構成で小型・低コスト化も可能となる。   According to the present embodiment, the elastically deformable member 7 fixed can be disposed outside the rotary friction member 5 made of metal (rigid body). Due to the concentric structure of the rotary friction member 5 and the damping effect of the rubber of the elastic deformation member, it is possible in principle to be a structure advantageous to high speed rotation. Even when the rotation friction member 5 is rotated at the same rotation speed as the motor 110, the operation noise can be reduced. By arranging the annular elastic deformation member 7 around the rotational friction member 5, it is possible to cope with the mass production quality such as life, durability and performance stability in a short period of time, and with a simple configuration, downsizing and cost reduction are also possible. Become.

本実施例によれば、解除部材の回転運動を回転体へ伝達するときに、回転体の回転運動に対する抵抗を簡単な構造で確実に解除することができる。   According to this embodiment, when the rotational movement of the release member is transmitted to the rotating body, the resistance to the rotational movement of the rotating body can be reliably released with a simple structure.

本実施例においては、解除部材10をモータ110の回転軸111と一体に回転させているので、抵抗発生装置1を小型化することができる。しかし、解除部材10を歯車、プーリ等の動力伝達部材を介してモータ又はモータ以外の原動機により回転させてもよい。   In the present embodiment, since the release member 10 is rotated integrally with the rotation shaft 111 of the motor 110, the resistance generator 1 can be miniaturized. However, the release member 10 may be rotated by a motor or a motor other than the motor via a power transmission member such as a gear or a pulley.

本実施例によれば、抵抗発生装置1は、バックドア200が開かれたときに、バックドア200の開位置を保持する保持抵抗を発生し、バックドア200の落下を防止することができる。抵抗発生装置1は、モータ110によりバックドア200を開閉するときに抵抗を発生しないので、ねじ付きスピンドル113のねじのリードを長く設定することができバックドア200の開閉速度を早くすることができる。また、抵抗発生装置1は、手動でバックドア200を開閉するときには抵抗を発生するので、ねじ付きスピンドル113のねじのリードを長く設定してもバックドア200の保持力を維持することができる。   According to the present embodiment, when the back door 200 is opened, the resistance generating device 1 can generate a holding resistance that holds the open position of the back door 200, and can prevent the back door 200 from falling. The resistance generator 1 does not generate resistance when the back door 200 is opened and closed by the motor 110. Therefore, the screw lead of the threaded spindle 113 can be set long, and the opening and closing speed of the back door 200 can be increased. . Further, since the resistance generating device 1 generates resistance when manually opening and closing the back door 200, the holding force of the back door 200 can be maintained even if the lead of the screw of the threaded spindle 113 is set long.

本実施例によれば、モータ110でバックドア200を開閉するときに保持抵抗力を完全に解除できるので、モータ110の損失が無く、モータ110を大型化する必要がない。また、モータ110による駆動時は、弾性変形部材7と回転摩擦部材5が離れるため、摩擦による性能劣化、部品の破損を低減することができる。   According to this embodiment, when the back door 200 is opened and closed by the motor 110, the holding resistance can be completely released. Therefore, there is no loss of the motor 110, and it is not necessary to enlarge the motor 110. In addition, since the elastic deformation member 7 and the rotary friction member 5 are separated when the motor 110 is driven, performance deterioration due to friction and breakage of parts can be reduced.

本実施例によれば、解除部材の回転運動を回転体へ伝達するときに、回転体の回転運動に対する抵抗を簡単な構造で確実に解除することができる。   According to this embodiment, when the rotational movement of the release member is transmitted to the rotating body, the resistance to the rotational movement of the rotating body can be reliably released with a simple structure.

(カム部の変形例)
カム部16は、回転摩擦部材5の内部に設けられていたが、カム部16は、回転摩擦部材5の外部又は外周に形成されていてもよい。以下、カム部の変形例として、図12を参照して、回転摩擦部材5の外周に形成されたカム部36を説明する。図12は、変形例のカム部36が設けられた回転摩擦部材5を示す図である。図12(a)は、モータ110の駆動が停止されているときの回転摩擦部材5の側面図である。図12(b)は、モータ110が回転されているときの回転摩擦部材5の側面図である。図12(c)は、図12(a)のXIIC−XIIC線に沿って取った回転摩擦部材5の断面図である。図12に示す回転摩擦部材5において、図8に示す回転摩擦部材5と同様の構造には同様の参照符号を付して説明を省略する。
(Modification of cam section)
The cam portion 16 is provided inside the rotary friction member 5, but the cam portion 16 may be formed on the outside or the outer periphery of the rotary friction member 5. Hereinafter, as a modified example of the cam portion, the cam portion 36 formed on the outer periphery of the rotary friction member 5 will be described with reference to FIG. FIG. 12 is a view showing the rotary friction member 5 provided with the cam portion 36 of the modified example. FIG. 12A is a side view of the rotary friction member 5 when the drive of the motor 110 is stopped. FIG. 12B is a side view of the rotational friction member 5 when the motor 110 is rotated. FIG.12 (c) is sectional drawing of the rotation friction member 5 taken along the XIIC-XIIC line of FIG. 12 (a). In the rotational friction member 5 shown in FIG. 12, the same reference numerals as those in the rotational friction member 5 shown in FIG.

回転摩擦部材5は、解除部材10に係合するカム部36を有する。カム部36は、回転摩擦部材5の外周壁に内側から外側へ貫通する傾斜溝穴として形成されている。解除部材10の突出部10cは、カム部36を貫通している。本実施例において、カム部36は、回転軸線Xに対して対称な二つの位置にそれぞれ設けられている。それぞれのカム部36は、複数(本実施例においては2つ)のカム面36aと、複数(本実施例においては2つ)の回転方向当接部36bと、本実施例においては1つの軸方向当接部36cを有する。カム面36aは、解除部材10の突出部10cと係合する。モータ110が回転し、解除部材10が回転摩擦部材5に対して相対的に回転すると、解除部材10の突出部10cとカム面36aとのカム作用により、回転摩擦部材5を回転軸線Xの方向へ滑り移動させる。回転方向当接部36bは、解除部材10の突出部10cに当接して、回転摩擦部材5に対する解除部材10の相対回転量を規制する。解除部材10の突出部10cが回転方向当接部36bに当接することにより、モータ110の回転を回転摩擦部材5へ伝達し、回転摩擦部材5を回転させる。軸方向当接部36cは、モータ110が停止しているときに、圧縮ばね21のばね力により解除部材10の突出部10cに当接して、回転摩擦部材5の回転軸線Xの方向の移動を規制する。   The rotational friction member 5 has a cam portion 36 engaged with the release member 10. The cam portion 36 is formed in the outer peripheral wall of the rotary friction member 5 as an inclined slot penetrating from the inside to the outside. The protrusion 10 c of the release member 10 penetrates the cam portion 36. In the present embodiment, the cam portions 36 are provided at two symmetrical positions with respect to the rotation axis X, respectively. Each cam portion 36 has a plurality of (two in the present embodiment) cam surfaces 36a, a plurality (two in the present embodiment) rotational direction contact portions 36b, and one shaft in the present embodiment. It has the direction contact part 36c. The cam surface 36 a engages with the protrusion 10 c of the release member 10. When the motor 110 rotates and the release member 10 rotates relative to the rotational friction member 5, the rotational friction member 5 is moved in the direction of the rotation axis X by the cam action of the projection 10c of the release member 10 and the cam surface 36a. Slide to move. The rotational direction contact portion 36 b abuts on the protrusion 10 c of the release member 10 and regulates the relative rotation amount of the release member 10 with respect to the rotational friction member 5. When the protrusion 10 c of the release member 10 abuts on the rotation direction contact portion 36 b, the rotation of the motor 110 is transmitted to the rotation friction member 5, and the rotation friction member 5 is rotated. When the motor 110 is at rest, the axial contact portion 36c is in contact with the projection 10c of the release member 10 by the spring force of the compression spring 21 to move the rotational friction member 5 in the direction of the rotation axis X. regulate.

図12(a)は、モータ110が停止しているときの回転摩擦部材5の回転軸線Xの方向の位置を示し、図12(b)は、モータ110が回転しているときの回転摩擦部材5の回転軸線Xの方向の位置を示している。モータ110が停止しているとき、回転摩擦部材5は、圧縮ばね21のばね力により矢印Bで示す方向に付勢されている。このとき、図12(a)に示すように、解除部材10の突出部10cは、カム部36の軸方向当接部36cに当接して回転摩擦部材5の回転軸線Xの方向への移動を規制する。解除部材10の突出部10cがカム部36の軸方向当接部36cに当接している状態において、弾性変形部材7の摩擦接触部7aは、回転摩擦部材5の摩擦接触部18に接触する。モータ110が回転すると、解除部材10の突出部10cとカム面36aとのカム作用により、回転摩擦部材5は、矢印Aで示す方向へ移動する。図12(a)及び図12(b)から分かるように、回転摩擦部材5は、回転軸線Xの方向に移動量Dだけ移動する。回転摩擦部材5の回転軸線Xの方向の移動量Dは、弾性変形部材7の摩擦接触部7aと回転摩擦部材5の摩擦接触部18との接触部の回転軸線Xの方向の長さより大きい。従って、モータ110が回転して回転摩擦部材5が矢印Aで示す方向へ移動すると、回転摩擦部材5の摩擦接触部18は、弾性変形部材7の摩擦接触部7aから離れる。   12 (a) shows the position of the rotational friction member 5 in the direction of the rotation axis X when the motor 110 is stopped, and FIG. 12 (b) shows the rotational friction member when the motor 110 is rotating. The position in the direction of the rotation axis X of 5 is shown. When the motor 110 is stopped, the rotary friction member 5 is biased in the direction indicated by the arrow B by the spring force of the compression spring 21. At this time, as shown in FIG. 12A, the projecting portion 10c of the releasing member 10 abuts on the axial contact portion 36c of the cam portion 36 to move the rotary friction member 5 in the direction of the rotation axis X. regulate. The frictional contact portion 7 a of the elastic deformation member 7 contacts the frictional contact portion 18 of the rotational friction member 5 in a state where the projection 10 c of the release member 10 is in contact with the axial contact portion 36 c of the cam portion 36. When the motor 110 rotates, the rotational friction member 5 moves in the direction indicated by the arrow A by the cam action of the projection 10 c of the release member 10 and the cam surface 36 a. As can be seen from FIGS. 12A and 12B, the rotary friction member 5 moves in the direction of the rotation axis X by the movement amount D. The amount of movement D in the direction of the rotational axis X of the rotational friction member 5 is larger than the length in the direction of the rotational axis X of the contact portion between the frictional contact portion 7a of the elastic deformation member 7 and the frictional contact portion 18 of the rotational friction member 5. Therefore, when the motor 110 rotates and the rotary friction member 5 moves in the direction indicated by the arrow A, the frictional contact portion 18 of the rotary friction member 5 separates from the frictional contact portion 7 a of the elastic deformation member 7.

このように、カム部36も、カム部16と同様にモータ110の回転に連動して回転摩擦部材5を回転軸線Xの方向へ移動させるとともに解除部材10の回転トルクを回転摩擦部材5へ伝達することができる。   As described above, the cam portion 36 also moves the rotational friction member 5 in the direction of the rotation axis X in conjunction with the rotation of the motor 110 similarly to the cam portion 16 and transmits the rotational torque of the release member 10 to the rotational friction member 5 can do.

なお、本実施例においては、回転摩擦部材5のカム部が設けられているが、解除部材10にカム部(傾斜面)を設けられてもよいし、回転摩擦部材5及び解除部材10の両方にカム部が設けられていてもよい。解除部材10にカム部を設けた場合、解除部材10のカム部に係合する突出部(係合部)を回転摩擦部材5に設けてもよい。また、回転摩擦部材5及び解除部材10のそれぞれに円盤状カム部を設け、回転摩擦部材5の円盤状カム部が解除部材10の円盤状カム部に係合するようにしてもよい。円盤状カム部は、回転位相に山谷が形成されていてもよい。   Although the cam portion of the rotation friction member 5 is provided in the present embodiment, the release member 10 may be provided with a cam portion (inclined surface), and both the rotation friction member 5 and the release member 10 may be provided. The cam portion may be provided on the When the release member 10 is provided with the cam portion, the rotational friction member 5 may be provided with a protrusion (engagement portion) that engages with the cam portion of the release member 10. Alternatively, a disk-shaped cam portion may be provided on each of the rotation friction member 5 and the release member 10, and the disk-shaped cam portion of the rotation friction member 5 may be engaged with the disk-shaped cam portion of the release member 10. The disk-shaped cam portion may have peaks and valleys formed in the rotational phase.

本実施例においては、出力部材2のスプライン軸22の外周に圧縮ばね21を設けているので、抵抗発生装置1を小型化することができる。しかし、スプライン軸22に隣接して、又は、スプライン軸22の内側に設けた空間内に圧縮ばね21を設けてもよい。   In the present embodiment, since the compression spring 21 is provided on the outer periphery of the spline shaft 22 of the output member 2, the resistance generator 1 can be miniaturized. However, the compression spring 21 may be provided in the space provided adjacent to the spline shaft 22 or inside the spline shaft 22.

また、本実施例においては、回転摩擦部材5にスプライン穴(スプライン部)17が設けられ、出力部材2にスプライン軸(スプライン部)22が設けられているが、回転摩擦部材5にスプライン軸を設け、出力部材2にスプライン穴を設けてもよい。スプライン軸及びスプライン穴は、出力部材2に対して回転摩擦部材5を軸線方向へスラスト移動可能に保持するとともに、回転摩擦部材5の回転トルクを出力部材2へ伝達して出力部材2を回転摩擦部材5に同期して回転させる軸線方向移動可能な回転伝達手段を構成する。なお、回転摩擦部材5と出力部材2の係合は、スプライン穴17とスプライン軸22との係合に限らず、回転摩擦部材5と出力部材2の一方に凹部を設け、他方に凸部を設け、凹部と凸部を係合可能とするとともに、凸部が凹部に対して軸線方向Xへスラスト移動可能とする種々の構成を取り得る。   Further, in the present embodiment, the rotational friction member 5 is provided with the spline hole (spline portion) 17 and the output member 2 is provided with the spline shaft (spline portion) 22. However, the rotational friction member 5 is provided with the spline shaft. Alternatively, the output member 2 may be provided with spline holes. The spline shaft and the spline hole rotatably hold the rotary friction member 5 in the axial direction with respect to the output member 2 so as to be able to thrust move the rotary friction member 5 to the output member 2 to rotate the output member 2 An axially movable rotation transmitting means that rotates in synchronization with the member 5 is configured. The engagement between the rotational friction member 5 and the output member 2 is not limited to the engagement between the spline hole 17 and the spline shaft 22, and one of the rotational friction member 5 and the output member 2 is provided with a recess, and the other is provided with a protrusion. It is possible to provide various configurations in which the concave portion and the convex portion can be engaged and the convex portion can move in the axial direction X with respect to the concave portion.

本実施例において、抵抗発生装置1は,モータ110と減速機112との間に設けられている。しかし、抵抗発生装置1は、減速機112とねじ付きスピンドル113との間に設けられていてもよい。すなわち、抵抗発生装置1は、減速機112で減速された駆動力をねじ付きスピンドル113へ伝達し、また、ねじ付きスピンドル113の駆動力を減速機112へ伝達するように構成されていてもよい。   In the present embodiment, the resistance generator 1 is provided between the motor 110 and the reduction gear 112. However, the resistance generator 1 may be provided between the reduction gear 112 and the threaded spindle 113. That is, the resistance generation device 1 may be configured to transmit the driving force decelerated by the reduction gear 112 to the threaded spindle 113 and to transmit the driving force of the threaded spindle 113 to the reduction gear 112. .

1・・・抵抗発生装置
2・・・出力部材
5・・・回転摩擦部材
6・・・ケース(固定部材)
7・・・弾性変形部材
10・・・解除部材
113・・・ねじ付きスピンドル(回転体)
150・・・車両
1 ... resistance generating device 2 ... output member 5 ... rotational friction member 6 ... case (fixed member)
7 ··· Elastic deformation member 10 ··· Release member 113 ··· Threaded spindle (rotary body)
150: Vehicle

Claims (6)

車両に設けられる抵抗発生装置であって、
動力を受けて回転する解除部材と、
前記動力を受けずに固定された固定部材と、
前記固定部材に固定して配置された弾性変形部材と、
前記解除部材が前記動力を受けて回転するのに伴い、前記弾性変形部材と接触する接触位置と前記弾性変形部材から離れる離間位置との間を移動可能な回転摩擦部材と、
前記回転摩擦部材の回転運動を回転体へ伝達する出力部材と、
前記回転摩擦部材を前記接触位置へ付勢する付勢部材と、
を備え
前記付勢部材は、前記出力部材と前記回転摩擦部材の間に配置され、
前記出力部材と前記回転摩擦部材の間に前記付勢部材を保持するために、前記出力部材は、前記回転摩擦部材に設けられた突起部に係止する爪部を有する抵抗発生装置。
A resistance generator provided in a vehicle, wherein
A release member that receives power and rotates;
A fixing member fixed without receiving the power;
An elastic deformation member disposed fixed to the fixing member;
A rotational friction member movable between a contact position in contact with the elastic deformation member and a separated position away from the elastic deformation member as the release member receives the power and rotates;
An output member for transmitting the rotational movement of the rotational friction member to the rotating body;
A biasing member for biasing the rotational friction member to the contact position;
Equipped with
The biasing member is disposed between the output member and the rotational friction member.
To hold the biasing member between said rotary friction member and the output member, the output member, that have a claw portion for engaging the projecting portion provided on said rotary friction member resistance generating device.
前記動力により前記解除部材が回転すると、前記解除部材は、前記付勢部材の付勢力に抗して前記回転摩擦部材を前記離間位置へ移動させる請求項に記載の抵抗発生装置。 The resistance generating device according to claim 1 , wherein when the release member is rotated by the power, the release member moves the rotational friction member to the separated position against the biasing force of the biasing member. 前記回転体により前記出力部材を介して前記回転摩擦部材が回転させられるときに、前記回転摩擦部材は、前記接触位置で前記弾性変形部材に接触することより前記回転体の回転運動に対する抵抗力を発生する請求項1又は2に記載の抵抗発生装置。 When the rotary friction member is rotated by the rotary body through the output member, the rotary friction member contacts the elastic deformation member at the contact position to resist the rotational movement of the rotary body. The resistance generator according to claim 1 or 2, which generates. 前記回転摩擦部材は、円環状の摩擦接触部を有し、前記弾性変形部材は、前記回転摩擦部材の前記摩擦接触部の外周面に接触可能な内周面を有する円環状の摩擦接触部を有する請求項1乃至のいずれか一項に記載の抵抗発生装置。 The rotary friction member has an annular friction contact portion, and the elastic deformation member is an annular friction contact portion having an inner circumferential surface capable of contacting the outer circumferential surface of the friction contact portion of the rotary friction member. The resistance generator according to any one of claims 1 to 3 which has. 前記回転摩擦部材が前記弾性変形部材に接触したときに、前記弾性変形部材の内径が拡大するように前記弾性変形部材が弾性変形し、前記弾性変形部材は、前記弾性変形部材の弾性力により前記回転摩擦部材を締め付ける請求項に記載の抵抗発生装置。 When the rotational friction member contacts the elastic deformation member, the elastic deformation member is elastically deformed so that the inner diameter of the elastic deformation member is expanded, and the elastic deformation member is deformed by the elastic force of the elastic deformation member. The resistance generator according to claim 4 , wherein the rotary friction member is tightened. 前記回転摩擦部材と前記出力部材のいずれか一方に凹部が設けられ、他方に前記凹部に対して前記回転摩擦部材の軸線方向に移動可能な凸部を設ける、請求項1乃至のいずれか一項に記載の抵抗発生装置。 Wherein one of the rotary friction member and the output member recess provided in the other to provide a convex portion that is movable in the axial direction of said rotary friction member relative to the recess, one of the claims 1 to 5 one The resistance generator as described in a term.
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