JP6483977B2

JP6483977B2 - Hinge device

Info

Publication number: JP6483977B2
Application number: JP2014177760A
Authority: JP
Inventors: 章郎石黒
Original assignee: 四方工業株式会社
Priority date: 2014-09-02
Filing date: 2014-09-02
Publication date: 2019-03-13
Anticipated expiration: 2034-09-02
Also published as: JP2016050659A

Description

本発明は、例えば、ノート型のパーソナルコンピュータ、携帯情報端末、携帯型ゲーム機、携帯電話機などの折り畳み式の電子機器、開閉する蓋体を有する複写機などのＯＡ機器、医療機器、ＦＡ機器等、更には一部又は全体が回転して上下に開閉するテーブル、蓋、扉等に用いるヒンジ装置に関する。 The present invention includes, for example, a foldable electronic device such as a notebook personal computer, a portable information terminal, a portable game machine, and a mobile phone, an OA device such as a copying machine having a lid that opens and closes, a medical device, an FA device, and the like. Further, the present invention relates to a hinge device used for a table, a lid, a door or the like that is partially or wholly rotated to open and close up and down.

従来より、上下に開閉する蓋や扉には、一定の抵抗トルクを発生するヒンジ装置が用いられている。ヒンジ装置は、ヒンジ軸まわりに抵抗トルクを生じる機構を設けることによって、開閉途中で手を離した際に蓋体が自重で落下することを防止する。蓋体を開くためには、蓋体の重量及びヒンジ軸まわりの抵抗トルクに抗する力を蓋体に作用させる必要がある。蓋体の重量が大きくなるに従って、蓋体を開くために作用させる力も大きくなる。 Conventionally, a hinge device that generates a certain resistance torque is used for a lid or a door that opens and closes up and down. The hinge device prevents a lid from falling by its own weight when a hand is released during opening and closing by providing a mechanism that generates a resistance torque around the hinge shaft. In order to open the lid, it is necessary to apply a force against the weight of the lid and a resistance torque around the hinge axis to the lid. As the weight of the lid increases, the force applied to open the lid also increases.

蓋体を開き易くするために、一方向の回転時には抵抗トルクが発生せず、逆方向の回転時には抵抗トルクが発生するヒンジ装置が開発されている。このヒンジ装置は、ワンウェイトルクヒンジ装置と呼ばれている。ワンウェイトルクヒンジ装置を用いることにより、蓋体の重量に抗する力で蓋体を開くことができ、蓋体を閉める際には、抵抗トルクがヒンジ軸まわりに作用し、蓋体の自重落下を防止することができる。 In order to facilitate opening of the lid, a hinge device has been developed that does not generate resistance torque when rotating in one direction and generates resistance torque when rotating in the opposite direction. This hinge device is called a one-way torque hinge device. By using a one-way torque hinge device, the lid can be opened with a force that resists the weight of the lid, and when the lid is closed, resistance torque acts around the hinge axis, causing the lid to fall by its own weight. Can be prevented.

特許文献１に記載のヒンジ装置は、一対の取付リーフ部、中央リーフ部、互いに平行な２つのヒンジ軸、ワンウェイ輪、及び制動筒体を備える。一方の取付リーフ部は可動体に、他方の取付リーフ部は固定体に取り付けられる。中央リーフ部は、平行な２つの貫通孔を有し、各貫通孔に制動筒体を収納し、制動筒体にヒンジ軸が圧入されている。各取付リーフ部は、貫通孔を有し、貫通孔にワンウェイ輪を収納している。一方のヒンジ軸の端部は、中央リーフ部から突出し、一方の取付リーフ部に収納されたワンウェイ輪に挿入されている。同様に、他方のヒンジ軸の端部は、中央リーフ部から突出し、他方の取付リーフ部に収納されたワンウェイ輪に挿入されている。 The hinge device described in Patent Literature 1 includes a pair of attachment leaf portions, a central leaf portion, two hinge shafts parallel to each other, a one-way wheel, and a brake cylinder. One attachment leaf portion is attached to the movable body, and the other attachment leaf portion is attached to the fixed body. The central leaf portion has two parallel through holes, the brake cylinders are accommodated in the respective through holes, and a hinge shaft is press-fitted into the brake cylinder. Each attachment leaf portion has a through hole, and the one-way wheel is accommodated in the through hole. The end portion of one hinge shaft protrudes from the central leaf portion, and is inserted into a one-way wheel housed in one attachment leaf portion. Similarly, the end portion of the other hinge shaft protrudes from the central leaf portion and is inserted into a one-way wheel housed in the other attachment leaf portion.

ワンウェイ輪は、ヒンジ軸の外周面に接する複数の小ローラ、各小ローラを保持するための円筒状の保持器、及び、各小ローラを収容するための複数の凹部を内周面に形成した外輪を備える。外輪に形成した各凹部は、円周方向の一端部の深さが他端部よりも深いくさび状をなす。小ローラは、保持器に組み込まれた押圧ばねによって、凹部の浅い側へ押圧されている。小ローラが凹部の深い側へ移動する方向にヒンジ軸が回転すると、外輪、小ローラ及びヒンジ軸は噛み込むことなく、ヒンジ軸は外輪に対して回転フリーになる。逆に、小ローラが凹部の浅い側へ移動する方向にヒンジ軸が回転すると、外輪、小ローラ及びヒンジ軸が噛み込んで、ヒンジ軸が外輪に対してロックする。 The one-way wheel is formed with a plurality of small rollers in contact with the outer peripheral surface of the hinge shaft, a cylindrical cage for holding each small roller, and a plurality of recesses for accommodating each small roller on the inner peripheral surface. An outer ring is provided. Each recess formed in the outer ring has a wedge shape in which the depth of one end in the circumferential direction is deeper than the other end. The small roller is pressed toward the shallow side of the recess by a pressing spring incorporated in the cage. When the hinge shaft rotates in the direction in which the small roller moves to the deep side of the recess, the hinge shaft is free to rotate with respect to the outer ring without the outer ring, the small roller, and the hinge shaft being engaged. Conversely, when the hinge shaft rotates in the direction in which the small roller moves to the shallow side of the recess, the outer ring, the small roller, and the hinge shaft are engaged, and the hinge shaft is locked with respect to the outer ring.

可動体を上方へ開く動作によって、可動体に取り付けられた取付リーフ部が一方向に回転すると、ヒンジ軸は外輪に対して回転フリーになるため、可動体の重量に抗する力で、可動体を上方へ開くことができる。一方、可動体を下方へ閉める動作によって、可動体に取り付けられた取付リーフ部が逆方向に回転すると、ヒンジ軸は外輪に対してロックし、中央リーフ部に収納した制動筒体とヒンジ軸との間に生じる抵抗トルクによって、可動体の自重落下を防止することができる。 When the attachment leaf attached to the movable body rotates in one direction by opening the movable body upward, the hinge shaft becomes free to rotate with respect to the outer ring. Can be opened upward. On the other hand, when the mounting leaf attached to the movable body rotates in the reverse direction by closing the movable body downward, the hinge shaft locks against the outer ring, and the brake cylinder and hinge shaft housed in the central leaf portion Due to the resistance torque generated between the movable body and the movable body, it is possible to prevent the movable body from falling by its own weight.

特開２０１４−０６２５９５号公報JP 2014-062595 A

しかしながら、特許文献１に記載のヒンジ装置では、ヒンジ軸の外周面に、小ローラ及び外輪を含むワンウェイ輪を配置し、更に該ワンウェイ輪を収納する貫通孔を取付リーフ部に設けるため、ヒンジ軸の径方向におけるヒンジ装置の外形寸法が大きくなってしまうという問題点があった。また、ワンウェイ輪は、複数の小ローラ、外輪、保持器及び押圧ばねを有しており、部品点数が多く、コストが高くなるという問題点があった。 However, in the hinge device described in Patent Document 1, a one-way wheel including a small roller and an outer ring is disposed on the outer peripheral surface of the hinge shaft, and a through hole for accommodating the one-way wheel is provided in the attachment leaf portion. There is a problem that the outer dimension of the hinge device in the radial direction becomes large. In addition, the one-way wheel has a plurality of small rollers, an outer ring, a cage, and a pressing spring, and has a problem that the number of parts is large and the cost is increased.

本発明は、斯かる事情に鑑みてなされたものであり、その目的とするところは、一方向への回転時に抵抗トルクを遮断し、他方向への回転時に抵抗トルクをヒンジ軸に伝達し、ヒンジ軸の径方向の寸法を小さくすることができるヒンジ装置を提供することにある。 The present invention has been made in view of such circumstances, and its purpose is to block the resistance torque when rotating in one direction, and transmit the resistance torque to the hinge shaft when rotating in the other direction. An object of the present invention is to provide a hinge device capable of reducing the radial dimension of the hinge shaft.

本発明に係るヒンジ装置は、ヒンジ軸を回転可能に支持するベース部と、前記ヒンジ軸の軸線まわりの抵抗トルクを発生するトルク発生部と、前記ヒンジ軸が一側へ回転する場合に前記抵抗トルクを遮断し、他側へ回転する場合に前記ヒンジ軸に伝達する伝達部とを備えたヒンジ装置において、前記伝達部は、前記ヒンジ軸とともに回転し、端部に切欠部を設けた筒体、及び前記ヒンジ軸に挿入されており、前記切欠部の奥側端部に接触する突起部を設けた環体を有し、前記トルク発生部は、前記ヒンジ軸に回転可能に支持されており、一端部が前記切欠部に対向し、該一端部で前記環体に接触する軸体、及び該軸体の回転に伴って摩擦を生じ、前記抵抗トルクを発生する摩擦部を有し、前記切欠部の奥側端部が周方向に対して傾斜しており、前記環体は、前記一側への回転時に、前記突起部が前記切欠部の深い側に移動し、前記一端部に対して滑って前記抵抗トルクを遮断し、前記他側への回転時に、前記突起部が前記切欠部の浅い側に移動し、前記一端部と前記奥側端部との間に噛み込んでロック状態となって前記抵抗トルクを伝達することを特徴とする。 The hinge device according to the present invention includes a base portion that rotatably supports a hinge shaft, a torque generating portion that generates a resistance torque around an axis of the hinge shaft, and the resistance when the hinge shaft rotates to one side. A hinge device comprising: a transmission portion that interrupts torque and transmits to the hinge shaft when rotating to the other side; the transmission portion rotates together with the hinge shaft and has a notch at the end , And a ring body provided with a protrusion that contacts a rear end portion of the notch, and the torque generator is rotatably supported by the hinge shaft. A shaft body having one end facing the notch and contacting the ring body at the one end, and a friction portion that generates friction with the rotation of the shaft and generates the resistance torque, and the rear end portion of the notch is inclined with respect to the circumferential direction When the ring is rotated to the one side, the protrusion moves to a deeper side of the notch, and slides against the one end to cut off the resistance torque, and when rotated to the other side, The protrusion is moved to a shallow side of the notch, and is engaged between the one end and the back end to be locked to transmit the resistance torque .

本発明にあっては、ヒンジ軸がベース部によって回転可能に支持されている。トルク発生部は、ヒンジ軸の軸線まわりの抵抗トルクを発生する。伝達部は、前記ヒンジ軸が一側へ回転する場合に前記抵抗トルクを遮断し、他側へ回転する場合に前記ヒンジ軸に伝達する。伝達部は、ヒンジ軸とともに回転する筒体を有し、該筒体の端部には切欠部が設けられている。伝達部は、ヒンジ軸に挿入された環体を有し、該環体には、切欠部の奥側端部に接触する突起部が設けられている。トルク発生部は、ヒンジ軸に回転可能に支持された軸体を有し、該軸体の一端部が切欠部に対向し、該一端部で環体に接触する。トルク発生部は、軸体の回転に伴って摩擦を生じ、抵抗トルクを発生する摩擦部を有する。切欠部は、奥側端部が周方向に対して傾斜しているので、くさび状に形成されている。環体は、前記一側への回転時に、突起部が切欠部の深い側に移動し、前記一端部に対して滑って抵抗トルクの伝達を遮断する。環体は、前記他側への回転時に、突起部が切欠部の浅い側に移動し、前記一端部と前記奥側端部との間に噛み込んでロック状態となって抵抗トルクを伝達する。伝達部における切欠部、環体の突起部、及び切欠部に対向する軸体の一端部がヒンジ軸の軸線方向に配置されており、ヒンジ装置は、ヒンジ軸の径方向の寸法を小さくすることができる。 In the present invention, the hinge shaft is rotatably supported by the base portion. The torque generator generates a resistance torque around the axis of the hinge shaft. The transmission unit interrupts the resistance torque when the hinge shaft rotates to one side, and transmits it to the hinge shaft when rotating to the other side. The transmission portion has a cylindrical body that rotates together with the hinge shaft, and a cutout portion is provided at an end of the cylindrical body. The transmission portion has a ring inserted into the hinge shaft, and the ring is provided with a protrusion that contacts the back end of the notch. The torque generating portion has a shaft body rotatably supported by the hinge shaft, and one end portion of the shaft body is opposed to the notch portion, and contacts the ring body at the one end portion. The torque generation unit includes a friction unit that generates friction with the rotation of the shaft body and generates resistance torque. The notch portion is formed in a wedge shape because the rear side end portion is inclined with respect to the circumferential direction. Annulus, said during rotation to one side, the protrusion is moved to the deep side of the notch, to block the transmission of the resistance torque slip relative to the one end. Annulus, during rotation of the said other side, the protrusion is moved to the shallow side of the notch to transmit the resistance torque becomes locked bite between said one end portion and the rear end portion . The notch part in the transmission part, the projecting part of the ring body, and one end part of the shaft body opposed to the notch part are arranged in the axial direction of the hinge shaft, and the hinge device reduces the dimension of the hinge shaft in the radial direction. Can do.

本発明に係るヒンジ装置は、前記伝達部が、前記切欠部の奥側端部の傾斜により前記切欠部の切欠きが浅い端部側へ前記突起部を押圧する押圧手段を有することを特徴とする。 The hinge device according to the present invention is characterized in that the transmission portion includes a pressing unit that presses the projection portion toward the end portion where the notch of the notch portion is shallow due to the inclination of the rear end portion of the notch portion. To do.

本発明にあっては、伝達部が押圧手段を有する。押圧手段は、奥側端部の傾斜により切欠部の切欠きが浅い端部側へ突起部を押圧するので、ヒンジ軸の回転時のガタを抑えることができる。 In this invention, a transmission part has a press means. Since the pressing means presses the protruding portion toward the end portion where the cutout portion is shallow due to the inclination of the back end portion, play at the time of rotation of the hinge shaft can be suppressed.

本発明に係るヒンジ装置は、前記環体が、軸方向に突出する凸部を有し、前記押圧手段は、前記凸部に接触し、前記軸方向に対して傾斜した当接面を設けた押圧部材、及び該押圧部材を押圧する圧縮コイルばねを有することを特徴とする。 In the hinge device according to the present invention, the ring body has a convex portion protruding in the axial direction, and the pressing means is provided with a contact surface that contacts the convex portion and is inclined with respect to the axial direction. A pressing member and a compression coil spring that presses the pressing member are provided.

本発明にあっては、環体が軸方向に突出する凸部を有する。押圧手段は、押圧部材、及び該押圧部材を押圧する圧縮コイルばねを有する。押圧部材は、環体に設けた凸部に接触し、軸方向に対して傾斜した当接面を有する。押圧部材の当接面が凸部を周方向に押圧し、環体に設けた突起部は、筒体に設けた切欠部の切欠きが浅い端部側へ押圧される。 In the present invention, the ring body has a convex portion protruding in the axial direction. The pressing means includes a pressing member and a compression coil spring that presses the pressing member. The pressing member is in contact with the convex portion provided on the ring body and has a contact surface inclined with respect to the axial direction. The contact surface of the pressing member presses the convex portion in the circumferential direction, and the protrusion provided on the ring body is pressed toward the end portion where the notch of the notch provided in the cylindrical body is shallow.

本発明に係るヒンジ装置は、前記突起部が円柱状をなし、前記軸体の一端部は、前記突起部の周側面に接触することを特徴とする。 The hinge device according to the present invention is characterized in that the protruding portion has a cylindrical shape, and one end portion of the shaft body is in contact with a peripheral side surface of the protruding portion.

本発明にあっては、突起部が円柱状をなし、軸体の一端部は、突起部の周側面に接触するので、突起部が切欠部の奥側端部と軸体の一端部に噛み込む際に発生する応力を突起部に作用させることができる。 In the present invention, the protrusion is cylindrical, and one end of the shaft is in contact with the peripheral side surface of the protrusion, so that the protrusion is engaged with the rear end of the notch and one end of the shaft. It is possible to apply a stress generated during the insertion to the protrusion.

本発明に係るヒンジ装置は、前記摩擦部が、前記ベース部によって前記軸線まわりの回転が拘束された静止板、及び前記軸体とともに回転し、前記静止板との間で摩擦を生じる摩擦板を有することを特徴とする。 In the hinge device according to the present invention, the friction portion includes a stationary plate whose rotation about the axis is restricted by the base portion, and a friction plate that rotates together with the shaft body and generates friction with the stationary plate. It is characterized by having.

本発明にあっては、摩擦部が静止板、及び摩擦板を有する。静止板はベース部によって軸線まわりの回転が拘束されており、摩擦板は軸体とともに回転し、静止板との間で摩擦を生じるので、摩擦による抵抗トルクを発生させることができる。 In the present invention, the friction part has a stationary plate and a friction plate. The rotation of the stationary plate around the axis is restricted by the base portion, and the friction plate rotates with the shaft body and generates friction with the stationary plate, so that it is possible to generate resistance torque due to friction.

本発明に係るヒンジ装置は、前記軸体の一端部に放射状の凹凸が設けられていることを特徴とする。 The hinge device according to the present invention is characterized in that radial concavities and convexities are provided at one end of the shaft body.

本発明にあっては、軸体の一端部に放射状の凹凸が設けられているので、環体が切欠部の奥側端部と軸体の一端部に噛み込み易くなる。 In the present invention, since the radial concavities and convexities are provided at one end of the shaft body, the ring body can easily bite into the rear end portion of the notch portion and the one end portion of the shaft body.

本発明によれば、ヒンジ軸がベース部によって回転可能に支持されている。トルク発生部は、ヒンジ軸の軸線まわりの抵抗トルクを発生する。伝達部は、前記ヒンジ軸が一側へ回転する場合に前記抵抗トルクを遮断し、他側へ回転する場合に前記ヒンジ軸に伝達する。伝達部は、ヒンジ軸とともに回転する筒体を有し、該筒体の端部には切欠部が設けられている。伝達部は、ヒンジ軸に挿入された環体を有し、該環体には、切欠部の奥側端部に接触する突起部が設けられている。トルク発生部は、ヒンジ軸に回転可能に支持された軸体を有し、該軸体の一端部が切欠部に対向し、該一端部で環体に接触する。トルク発生部は、軸体の回転に伴って摩擦を生じ、抵抗トルクを発生する摩擦部を有する。切欠部は、奥側端部が周方向に対して傾斜している。環体は、前記一側への回転時に、突起部が切欠部の深い側に移動し、前記一端部に対して滑って抵抗トルクの伝達を遮断する。環体は、前記他側への回転時に、突起部が切欠部の浅い側に移動し、前記一端部と前記奥側端部との間に噛み込んでロック状態となり抵抗トルクを伝達する。伝達部における切欠部、環体の突起部、及び切欠部に対向する軸体の一端部がヒンジ軸の軸線方向に配置されており、ヒンジ装置は、ヒンジ軸の径方向の寸法を小さくすることができる。 According to the present invention, the hinge shaft is rotatably supported by the base portion. The torque generator generates a resistance torque around the axis of the hinge shaft. The transmission unit interrupts the resistance torque when the hinge shaft rotates to one side, and transmits it to the hinge shaft when rotating to the other side. The transmission portion has a cylindrical body that rotates together with the hinge shaft, and a cutout portion is provided at an end of the cylindrical body. The transmission portion has a ring inserted into the hinge shaft, and the ring is provided with a protrusion that contacts the back end of the notch. The torque generating portion has a shaft body rotatably supported by the hinge shaft, and one end portion of the shaft body is opposed to the notch portion, and contacts the ring body at the one end portion. The torque generation unit includes a friction unit that generates friction with the rotation of the shaft body and generates resistance torque. As for the notch part, the back side edge part inclines with respect to the circumferential direction. Annulus, said during rotation to one side, the protrusion is moved to the deep side of the notch, to block the transmission of the resistance torque slip relative to the one end. Annulus, during rotation of the said other side, the protrusion is moved to the shallow side of the notch, to transmit the crowded is in the locked state resistance torque biting between said one end portion and the rear end portion. The notch part in the transmission part, the projecting part of the ring body, and one end part of the shaft body opposed to the notch part are arranged in the axial direction of the hinge shaft, and the hinge device reduces the dimension of the hinge shaft in the radial direction. Can do.

本発明の実施の形態１に係るヒンジ装置を用いた電子機器の外観を示す斜視図である。It is a perspective view which shows the external appearance of the electronic device using the hinge apparatus which concerns on Embodiment 1 of this invention. 本発明の実施の形態１に係るヒンジ装置の外観を示す斜視図である。It is a perspective view which shows the external appearance of the hinge apparatus which concerns on Embodiment 1 of this invention. ヒンジ装置の分解斜視図である。It is a disassembled perspective view of a hinge apparatus. ヒンジ装置の伝達部を拡大した正面図である。It is the front view which expanded the transmission part of the hinge apparatus. 筒体及び押圧部材の一部を破断した伝達部の正面図である。It is a front view of the transmission part which fractured | ruptured a cylinder and a part of press member. 抵抗トルクを遮断した状態でのヒンジ装置の伝達部の外観を示す正面図である。It is a front view which shows the external appearance of the transmission part of the hinge apparatus in the state which interrupted | blocked resistance torque. 抵抗トルクを伝達した状態でのヒンジ装置の伝達部の外観を示す正面図である。It is a front view which shows the external appearance of the transmission part of the hinge apparatus in the state which transmitted resistance torque. 実施の形態２に係るヒンジ装置の環体の外観を示す斜視図である。It is a perspective view which shows the external appearance of the annular body of the hinge apparatus which concerns on Embodiment 2. FIG. 実施の形態３に係るヒンジ装置の伝達部の正面図である。It is a front view of the transmission part of the hinge apparatus which concerns on Embodiment 3. FIG. 実施の形態４に係るヒンジ装置の軸体の外観を示す斜視図である。It is a perspective view which shows the external appearance of the shaft body of the hinge apparatus which concerns on Embodiment 4. FIG.

以下、本発明に係るヒンジ装置の実施の形態を図面に基づいて説明する。 DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a hinge device according to the present invention will be described with reference to the drawings.

（実施の形態１）
図１は本発明の実施の形態１に係るヒンジ装置１を用いた電子機器１００の外観を示す斜視図である。電子機器１００は、例えばノート型のパーソナルコンピュータであり、携帯情報端末、電子手帳、電子辞書、携帯型ゲーム機、携帯電話機などの他の折り畳み式の機器であっても良い。ヒンジ装置１は、折り畳み式の電子機器に限らず、開閉する蓋体を有する複写機などのＯＡ機器、医療機器、ＦＡ機器等に用いることができ、更には一部又は全体が回転して上下に開閉するテーブル、蓋、扉等に用いることもできる。 (Embodiment 1)
FIG. 1 is a perspective view showing an external appearance of an electronic device 100 using a hinge device 1 according to Embodiment 1 of the present invention. The electronic device 100 is, for example, a notebook personal computer, and may be another foldable device such as a portable information terminal, an electronic notebook, an electronic dictionary, a portable game machine, or a mobile phone. The hinge device 1 can be used not only for folding electronic devices but also for OA devices such as copiers having a lid that opens and closes, medical devices, FA devices, and the like. It can also be used for tables, lids, doors, etc. that open and close.

電子機器１００は、カバー部１１０、本体部１２０、及びヒンジ装置１を備える。カバー部１１０は、液晶ディスプレイ１１１、及び液晶ディスプレイ１１１を装着するカバー部筐体１１３を有する。液晶ディスプレイ１１１は、情報処理されたデータ、文字、画像などを表示面１１２に表示する液晶パネル、表示面１１２に接触することにより入力操作が行えるタッチパネル等（図示略）を有する。カバー部筐体１１３は矩形状をなし、液晶ディスプレイ１１１の周縁部及び表示面１１２と反対側の面を覆う。 The electronic device 100 includes a cover part 110, a main body part 120, and the hinge device 1. The cover unit 110 includes a liquid crystal display 111 and a cover unit housing 113 on which the liquid crystal display 111 is mounted. The liquid crystal display 111 includes a liquid crystal panel that displays processed data, characters, images, and the like on the display surface 112, a touch panel that can perform an input operation by touching the display surface 112, and the like (not shown). The cover housing 113 has a rectangular shape and covers the peripheral edge of the liquid crystal display 111 and the surface opposite to the display surface 112.

本体部１２０は、キーボード１２１、タッチパッド１２２、及び本体部筐体１２３を有する。キーボード１２１及びタッチパッド１２２は、操作部分が露出するように本体部筐体１２３に装着されている。本体部筐体１２３は矩形状をなし、内部にＣＰＵ、磁気ディスク、メモリ等（図示略）を収容する。ヒンジ装置１は、カバー部筐体１１３及び本体部筐体１２３の対応する一辺の両端部にそれぞれ１つずつ取り付けられている。例えば、カバー部１１０は、本体部１２０に対して０°から１８０°まで開閉動作が可能である。 The main body 120 includes a keyboard 121, a touch pad 122, and a main body housing 123. The keyboard 121 and the touch pad 122 are attached to the main body housing 123 so that the operation part is exposed. The main body housing 123 has a rectangular shape and houses a CPU, a magnetic disk, a memory, and the like (not shown) inside. One hinge device 1 is attached to each of both ends of one side corresponding to the cover housing 113 and the main body housing 123. For example, the cover part 110 can be opened and closed with respect to the main body part 120 from 0 ° to 180 °.

図１は、カバー部１１０の開き角度が約６０°となっている状態を示している。一般的に、ユーザはカバー部１１０を開く方向（図１に示すＡ方向）へ回転し、開き角度を約１３５°程度に設定した状態で、液晶ディスプレイ１１１の表示面１１２を視認し、キーボード１２１及びタッチパッド１２２を用いて入力操作を行う。 FIG. 1 shows a state where the opening angle of the cover part 110 is about 60 °. In general, the user rotates the cover 110 in the opening direction (A direction shown in FIG. 1) and visually recognizes the display surface 112 of the liquid crystal display 111 in a state where the opening angle is set to about 135 °. In addition, an input operation is performed using the touch pad 122.

後述するように、ヒンジ装置１は、一方向即ちＡ方向への回転時には内部発生する抵抗トルクを遮断する。ユーザは、カバー部１１０をＡ方向へ回転させる場合、カバー部１１０の自重に抗する力でカバー部１１０を回転させることができる。一方、ヒンジ装置１は、Ａ方向と逆方向であるＢ方向への回転時には、内部発生する抵抗トルクをヒンジ軸に伝達する。ユーザは、カバー部１１０をＢ方向へ回転させる場合、ヒンジ軸に伝達された抵抗トルクに抗する力を作用させることでカバー部１１０を回転させることができる。ユーザがカバー部１１０をＢ方向へ回転させている途中で動作を止めると、抵抗トルクによってカバー部１１０は、その回転位置で静止する。 As will be described later, the hinge device 1 blocks internally generated resistance torque when rotating in one direction, that is, in the A direction. When rotating the cover part 110 in the A direction, the user can rotate the cover part 110 with a force that resists the weight of the cover part 110. On the other hand, the hinge device 1 transmits internally generated resistance torque to the hinge shaft when rotating in the B direction, which is the direction opposite to the A direction. When the user rotates the cover part 110 in the direction B, the user can rotate the cover part 110 by applying a force against the resistance torque transmitted to the hinge shaft. When the user stops the operation while rotating the cover unit 110 in the B direction, the cover unit 110 is stopped at the rotation position by the resistance torque.

図２は本発明の実施の形態１に係るヒンジ装置１の外観を示す斜視図、図３はヒンジ装置１の分解斜視図である。ヒンジ装置１は、ベース部１０、ブラケット１３、ヒンジ軸２０、伝達部４０、及びトルク発生部５０等を備える。ベース部１０は、ブラケット１１及び支持部材１２を有する。ブラケット１１は、平板状の取付部１１ａ、取付部１１ａの一辺から垂直に立ち上げた軸支持部１１ｂを有する。軸支持部１１ｂは、先端部分にヒンジ軸２０を挿通する軸孔１１ｃを有する。支持部材１２は棒状をなし、一端部を軸支持部１１ｂに設けた取付孔に挿入してブラケット１１に固定し、ヒンジ軸２０に平行に配置されている。取付部１１ａは本体部１２０に螺子止めするための取付孔を有する。ブラケット１３は矩形板状をなし、長手方向の一端部に取付孔１３ａを有し、取付孔１３ａにヒンジ軸２０を挿通し、ヒンジ軸２０に固定される。ブラケット１３は、長手方向の中途部及び他端部にカバー部１１０へ螺子止めするための取付孔を有する。 FIG. 2 is a perspective view showing an appearance of the hinge device 1 according to Embodiment 1 of the present invention, and FIG. 3 is an exploded perspective view of the hinge device 1. The hinge device 1 includes a base unit 10, a bracket 13, a hinge shaft 20, a transmission unit 40, a torque generation unit 50, and the like. The base unit 10 includes a bracket 11 and a support member 12. The bracket 11 includes a plate-like attachment portion 11a and a shaft support portion 11b that is vertically raised from one side of the attachment portion 11a. The shaft support portion 11b has a shaft hole 11c through which the hinge shaft 20 is inserted at the tip portion. The support member 12 has a rod shape, and one end portion is inserted into an attachment hole provided in the shaft support portion 11 b and fixed to the bracket 11, and is disposed in parallel to the hinge shaft 20. The attachment portion 11 a has an attachment hole for screwing to the main body portion 120. The bracket 13 has a rectangular plate shape, has a mounting hole 13a at one end in the longitudinal direction, is inserted into the mounting hole 13a, and is fixed to the hinge shaft 20. The bracket 13 has attachment holes for screwing the cover portion 110 to the middle portion and the other end portion in the longitudinal direction.

ヒンジ軸２０は、大径部２１の両側に軸体２２及び軸体２３を有する。大径部２１、軸体２２及び軸体２３は同軸をなす。ヒンジ軸２０は、軸体２２をブラケット１１の軸孔１１ｃに挿入して軸線まわりに回転可能となるようベース部１０に支持されている。２つの摩擦用ワッシャ３１は、ブラケット１１の軸支持部１１ｂの両面を挟むように軸体２２に挿入されており、摩擦及び摩耗を低減する。大径部２１は、外径が軸孔１１ｃの直径よりも大きく、一側端面が摩擦用ワッシャ３１を介して軸支持部１１ｂの板面に当接し、ヒンジ軸２０の軸線方向の位置がベース部１０に対して決まる。 The hinge shaft 20 has a shaft body 22 and a shaft body 23 on both sides of the large diameter portion 21. The large diameter portion 21, the shaft body 22, and the shaft body 23 are coaxial. The hinge shaft 20 is supported by the base portion 10 so that the shaft body 22 is inserted into the shaft hole 11c of the bracket 11 and can be rotated around the axis. The two friction washers 31 are inserted into the shaft body 22 so as to sandwich both surfaces of the shaft support portion 11b of the bracket 11, and reduce friction and wear. The large-diameter portion 21 has an outer diameter larger than the diameter of the shaft hole 11c, one end face abuts against the plate surface of the shaft support portion 11b via the friction washer 31, and the position of the hinge shaft 20 in the axial direction is the base. Part 10 is determined.

ブラケット１３は、取付孔１３ａに軸体２２を挿入し、軸体２２の先端部にワッシャ３２及びナット３３を取り付けることによって、ヒンジ軸２０に固定される。軸体２２の周面には一部を切除した平坦面が形成してあり、該平坦面がブラケット１３の取付孔１３ａの内周面に設けた平坦面に接触することによって、ブラケット１３はヒンジ軸２０と一体的に回転する。 The bracket 13 is fixed to the hinge shaft 20 by inserting the shaft body 22 into the mounting hole 13 a and attaching a washer 32 and a nut 33 to the tip of the shaft body 22. A flat surface with a part cut away is formed on the peripheral surface of the shaft body 22, and the bracket 13 is hinged by contacting the flat surface provided on the inner peripheral surface of the mounting hole 13 a of the bracket 13. It rotates integrally with the shaft 20.

軸体２３は、大径部２１側の基端部から中途部に亘って伝達部４０の各部品が挿入されており、中途部から先端部に亘ってトルク発生部５０が挿入されている。 In the shaft body 23, each component of the transmission unit 40 is inserted from the base end part on the large diameter part 21 side to the middle part, and the torque generating part 50 is inserted from the middle part to the tip part.

伝達部４０は、筒体４１、環体４２、圧縮コイルばね４３、押圧部材４４等を有する。筒体４１は、一端部の円周上の対向位置に２つの切欠部４１ａを有し、他端部は、ヒンジ軸２０の大径部２１に嵌合する。大径部２１の周面には一部を切除した平坦面が形成してあり、該平坦面が筒体４１の他端部の内周面に設けた平坦面に接触することによって、筒体４１はヒンジ軸２０と一体的に回転する。 The transmission unit 40 includes a cylindrical body 41, an annular body 42, a compression coil spring 43, a pressing member 44, and the like. The cylindrical body 41 has two notches 41 a at opposite positions on the circumference of one end, and the other end is fitted to the large diameter portion 21 of the hinge shaft 20. A flat surface with a part cut away is formed on the peripheral surface of the large-diameter portion 21, and the flat surface comes into contact with the flat surface provided on the inner peripheral surface of the other end portion of the cylindrical body 41, thereby 41 rotates integrally with the hinge shaft 20.

図４はヒンジ装置１の伝達部４０を拡大した正面図である。図４に示すように、筒体４１の一端部に設けた切欠部４１ａは、筒体４１の周方向Ｃの一方の端部における切欠きの深さが、他方の端部より深いくさび状をなし、奥側端部が周方向Ｃに対して角度θ傾斜している。切欠部４１ａの奥側端部の傾斜角度θは、５°から３０°程度が好適である。筒体４１の軸方向の中途部には軸方向に対して長手方向が傾斜する規制溝４１ｂが設けられている。 FIG. 4 is an enlarged front view of the transmission unit 40 of the hinge device 1. As shown in FIG. 4, the notch 41 a provided at one end of the cylinder 41 has a wedge shape in which the notch depth at one end in the circumferential direction C of the cylinder 41 is deeper than the other end. None, the back end is inclined at an angle θ with respect to the circumferential direction C. The inclination angle θ of the rear end portion of the notch 41a is preferably about 5 ° to 30 °. A regulating groove 41b whose longitudinal direction is inclined with respect to the axial direction is provided in the middle part of the cylindrical body 41 in the axial direction.

環体４２は、外周面の対向位置に２つの円柱状の突起部４２ａを有し、ヒンジ軸２０の軸体２３に挿入される。環体４２の外周面の径は、筒体４１の一端部の内径よりやや小さく、環体４２は筒体４１に収容される。環体４２の突起部４２ａは、筒体４１の切欠部４１ａに嵌まり、突起部４２ａの周側部が、切欠部４１ａの奥側端部に接触する。環体４２の突起部４２ａの周側部は、環体４２の環状部分におけるトルク発生部５０側の端面４２ｃよりも軸方向に突出しており、後述するトルク発生部５０の接触面に当接する。環体４２は、大径部２１側の端面における円周上の対向位置に、軸方向に突出する２つの凸部４２ｂを有する。筒体４１の内部には、圧縮コイルばね４３及び押圧部材４４が収容されている。 The ring body 42 has two columnar projections 42 a at positions opposed to the outer peripheral surface, and is inserted into the shaft body 23 of the hinge shaft 20. The diameter of the outer peripheral surface of the ring body 42 is slightly smaller than the inner diameter of one end portion of the cylinder body 41, and the ring body 42 is accommodated in the cylinder body 41. The projecting portion 42a of the ring body 42 is fitted into the cutout portion 41a of the cylindrical body 41, and the peripheral side portion of the projecting portion 42a is in contact with the rear end portion of the cutout portion 41a. A circumferential side portion of the protrusion 42a of the ring body 42 protrudes in the axial direction from an end surface 42c on the torque generation unit 50 side in the annular portion of the ring body 42, and abuts against a contact surface of the torque generation unit 50 described later. The ring body 42 has two convex portions 42b projecting in the axial direction at opposing positions on the circumference of the end surface on the large diameter portion 21 side. A compression coil spring 43 and a pressing member 44 are accommodated in the cylindrical body 41.

圧縮コイルばね４３は、ヒンジ軸２０の軸体２３の基端部に挿入されており、一端部が大径部２１の端面に当接している。押圧部材４４は円筒状であり、内径は圧縮コイルばね４３の外径より大きく、圧縮コイルばね４３を内部に収容するように、軸体２３の基端部に挿入されている。圧縮コイルばね４３は、ヒンジ装置１に組み込まれた状態で、軸方向に押し込まれて圧縮された状態になる。押圧部材４４は、軸体２３の基端部側と逆側の端部に環状の底部４４ａを有し、底部４４ａの内底面に圧縮コイルばね４３の他端部が当接している。尚、圧縮コイルばね４３及び押圧部材４４は、本発明の押圧手段に相当する。 The compression coil spring 43 is inserted into the proximal end portion of the shaft body 23 of the hinge shaft 20, and one end portion is in contact with the end surface of the large diameter portion 21. The pressing member 44 is cylindrical, has an inner diameter larger than the outer diameter of the compression coil spring 43, and is inserted into the proximal end portion of the shaft body 23 so as to accommodate the compression coil spring 43 therein. The compression coil spring 43 is in a state of being compressed by being pushed in the axial direction while being incorporated in the hinge device 1. The pressing member 44 has an annular bottom 44 a at the end opposite to the base end of the shaft body 23, and the other end of the compression coil spring 43 is in contact with the inner bottom surface of the bottom 44 a. The compression coil spring 43 and the pressing member 44 correspond to the pressing means of the present invention.

図５は筒体４１及び押圧部材４４の一部を破断した伝達部４０の正面図である。図５に示すように、底部４４ａの外縁部の対向位置には、環体４２に設けた凸部４２ｂが嵌まる２つの切欠部４４ｂが形成されている。切欠部４４ｂは、軸方向に対し略４５°傾斜した当接面を有し、該当接面に凸部４２ｂが接触する。押圧部材４４は、軸方向の周側部に突起部４４ｃを有する。突起部４４ｃは、筒体４１に設けた規制溝４１ｂに嵌合している。 FIG. 5 is a front view of the transmission part 40 in which a part of the cylindrical body 41 and the pressing member 44 is broken. As shown in FIG. 5, two notches 44b into which the convex portions 42b provided on the ring body 42 are fitted are formed at positions opposed to the outer edge portion of the bottom portion 44a. The notch 44b has an abutment surface inclined by approximately 45 ° with respect to the axial direction, and the convex portion 42b contacts the corresponding contact surface. The pressing member 44 has a protruding portion 44c on the circumferential side portion in the axial direction. The protrusion 44 c is fitted in a restriction groove 41 b provided in the cylindrical body 41.

トルク発生部５０は、軸体５１、静止板５２、摩擦用ワッシャ５３、皿ばね５４等を有する。軸体５１は管状であり、内径がヒンジ軸２０の軸体２３の外径よりもやや大きく、軸体２３の軸線方向の中途部から先端部に亘って挿入されている。軸体５１は、伝達部４０側の端部に環状の鍔部５１ａを有する。鍔部５１ａの伝達部４０側の端面５１ｂは、筒体４１の切欠部４１ａに対向しており、環体４２の突起部４２ａの周側部に接触する接触面となっている。端面５１ｂは、平坦面、又はサンドブラスト等の粗面加工を施した面とする。軸体５１は、外周面に一部を切除した平坦面を有する。 The torque generator 50 includes a shaft body 51, a stationary plate 52, a friction washer 53, a disc spring 54, and the like. The shaft body 51 is tubular, has an inner diameter slightly larger than the outer diameter of the shaft body 23 of the hinge shaft 20, and is inserted from a midway portion to an end portion in the axial direction of the shaft body 23. The shaft body 51 has an annular flange 51a at the end on the transmission unit 40 side. An end surface 51b of the flange portion 51a on the transmission portion 40 side is opposed to the notch portion 41a of the cylindrical body 41 and serves as a contact surface that comes into contact with the peripheral side portion of the projection portion 42a of the annular body 42. The end surface 51b is a flat surface or a surface subjected to roughing such as sandblasting. The shaft body 51 has a flat surface obtained by partially cutting the outer peripheral surface.

静止板５２は、長円板状をなし、一端部に貫通孔５２ａ、他端部に取付孔５２ｂを有する。静止板５２は、貫通孔５２ａの直径が軸体５１の外径よりやや大きく、貫通孔５２ａに軸体５１を挿通する。静止板５２は、取付孔５２ｂにベース部１０の支持部材１２を挿通することにより、回転が規制され、ベース部１０に対して静止した状態となっている。 The stationary plate 52 has an oblong plate shape, and has a through hole 52a at one end and a mounting hole 52b at the other end. In the stationary plate 52, the diameter of the through hole 52a is slightly larger than the outer diameter of the shaft body 51, and the shaft body 51 is inserted into the through hole 52a. The stationary plate 52 is in a state of being stationary with respect to the base portion 10 by restricting the rotation by inserting the support member 12 of the base portion 10 through the mounting hole 52b.

摩擦用ワッシャ５３は、内周面に平坦面が形成さており、該平坦面が軸体５１の外周面に設けた平坦面に接触することによって回転が拘束され、軸体５１と一体的に回転する。静止板５２及び摩擦用ワッシャ５３は、交互に２つ重ねて、軸体５１に挿入されている。複数の皿ばね５４は、押さえ用のワッシャ５５とともに軸体５１に挿入され、ナット５６を軸体５１の先端部に取り付けることによって軸方向の予圧を発生する。尚、摩擦用ワッシャ５３は本発明の摩擦板に相当し、摩擦用ワッシャ５３及び静止板５２は本発明の摩擦部に相当する。 The friction washer 53 is formed with a flat surface on the inner peripheral surface, and the flat surface comes into contact with the flat surface provided on the outer peripheral surface of the shaft body 51, so that the rotation is constrained and rotates integrally with the shaft body 51. To do. The stationary plate 52 and the friction washer 53 are inserted into the shaft body 51 so as to be alternately stacked. The plurality of disc springs 54 are inserted into the shaft body 51 together with a pressing washer 55, and a preload in the axial direction is generated by attaching a nut 56 to the distal end portion of the shaft body 51. The friction washer 53 corresponds to the friction plate of the present invention, and the friction washer 53 and the stationary plate 52 correspond to the friction portion of the present invention.

トルク発生部５０は、軸体５１をヒンジ軸２０の軸体２３に挿入し、ナット５６から突出した軸体２３の先端部にワッシャ３４を嵌め、軸体２３の先端部を鍔状に変形加工することで、ヒンジ軸２０に組み込まれる。静止板５２は、ベース部１０に対して静止した状態であるので、摩擦用ワッシャ５３が軸体５１とともに回転すると、皿ばね５４が発生する予圧によって摩擦用ワッシャ５３と静止板５２との間で摩擦が生じ、抵抗トルクＲが発生する。尚、抵抗トルクＲは、軸体５１が回転する際に発生する。 The torque generating unit 50 inserts the shaft body 51 into the shaft body 23 of the hinge shaft 20, fits the washer 34 to the tip of the shaft body 23 protruding from the nut 56, and deforms the tip of the shaft body 23 into a bowl shape. By doing so, the hinge shaft 20 is incorporated. Since the stationary plate 52 is in a stationary state with respect to the base portion 10, when the friction washer 53 rotates with the shaft 51, the preload generated by the disc spring 54 causes the friction washer 53 and the stationary plate 52 to move. Friction occurs and resistance torque R is generated. The resistance torque R is generated when the shaft body 51 rotates.

次にヒンジ装置１の動作について説明する。図５に示すように、圧縮コイルばね４３の復元力が押圧部材４４に作用し、切欠部４４ｂの傾斜した当接面が環体４２の凸部４２ｂを押圧する。筒体４１の規制溝４１ｂに押圧部材４４の突起部４４ｃが嵌合しているので、押圧部材４４は、切欠部４４ｂに設けた当接面が環体４２の凸部４２ｂを押圧する方向に押し出され、ガタが生じにくい。環体４２は、ヒンジ軸２０の軸線方向に伝達部４０側へ押圧されるとともに、軸線まわりのトルクを受ける。環体４２の突起部４２ａは、筒体４１の切欠部４１ａ内に位置しており、切欠部４１ａ内の深さが浅い一端部側へ押圧されて移動した状態となっている。 Next, the operation of the hinge device 1 will be described. As shown in FIG. 5, the restoring force of the compression coil spring 43 acts on the pressing member 44, and the inclined contact surface of the notch 44 b presses the convex portion 42 b of the annular body 42. Since the protrusion 44c of the pressing member 44 is fitted in the restriction groove 41b of the cylindrical body 41, the pressing member 44 is in a direction in which the contact surface provided on the notch 44b presses the convex portion 42b of the annular body 42. Extruded and less likely to play. The ring body 42 is pressed toward the transmission unit 40 in the axial direction of the hinge shaft 20 and receives torque around the axis. The projecting portion 42a of the ring body 42 is located in the cutout portion 41a of the cylindrical body 41, and is in a state of being moved by being pressed toward one end portion where the depth in the cutout portion 41a is shallow.

図６は抵抗トルクを遮断した状態でのヒンジ装置１の伝達部４０の外観を示す正面図、図７は抵抗トルクを伝達した状態でのヒンジ装置１の伝達部４０の外観を示す正面図である。電子機器１００のカバー部１１０を開く動作によってＡ方向（図１参照）へ回転させると、図６に示すように、ブラケット１３、ヒンジ軸２０及び筒体４１は、カバー部１１０とともにＡ方向へ回転する。尚、図１及び図６に示すＡ方向は、ヒンジ軸２０まわりの同じ回転方向を表している。上述のように伝達部４０の環体４２は、押圧部材４４から伝達部４０側への押圧力を受けており、接触する突起部４２ａの周側部と軸体５１の端面５１ｂとの間で摩擦が生じ、摩擦トルクＦ１が働く。 6 is a front view showing the external appearance of the transmission unit 40 of the hinge device 1 in a state where the resistance torque is cut off, and FIG. 7 is a front view showing the external appearance of the transmission unit 40 of the hinge device 1 in a state where the resistance torque is transmitted. is there. When the cover part 110 of the electronic device 100 is rotated in the A direction (see FIG. 1) by opening the cover part 110, the bracket 13, the hinge shaft 20, and the cylinder 41 rotate together with the cover part 110 in the A direction as shown in FIG. To do. The A direction shown in FIGS. 1 and 6 represents the same rotational direction around the hinge shaft 20. As described above, the ring body 42 of the transmission portion 40 receives a pressing force from the pressing member 44 toward the transmission portion 40, and is between the peripheral side portion of the protruding portion 42 a and the end surface 51 b of the shaft body 51. Friction occurs and the friction torque F1 works.

筒体４１がＡ方向に回転する際、環体４２は摩擦トルクＦ１によって回転方向の位置を維持し、突起部４２ａは、筒体４１の切欠部４１ａ内を深さの深い他端部側へ見かけ上移動する。突起部４２ａが切欠部４１ａの他端部に当接すると、カバー部１１０のＡ方向への回転に応じて、筒体４１とともに環体４２もＡ方向へ回転する。カバー部１１０の回転には、カバー部１１０の自重に加え、摩擦トルクＦ１、さらにはブラケット１１の軸支持部１１ｂとヒンジ軸２０との間に生じる摩擦トルクＦ２が働くが、摩擦トルクＦ１及びＦ２を十分に小さいトルク値とすることで、カバー部１１０の重量に応じた手動トルクで、カバー部１１０を開くことができる。 When the cylinder 41 rotates in the A direction, the ring body 42 maintains the position in the rotation direction by the friction torque F1, and the protrusion 42a passes through the notch 41a of the cylinder 41 toward the other end with a deep depth. Moves in appearance. When the projecting portion 42a comes into contact with the other end portion of the cutout portion 41a, the ring body 42 is also rotated in the A direction together with the cylindrical body 41 in accordance with the rotation of the cover portion 110 in the A direction. In addition to the weight of the cover part 110, the rotation of the cover part 110 is caused by the friction torque F1 and the friction torque F2 generated between the shaft support part 11b of the bracket 11 and the hinge shaft 20, but the friction torques F1 and F2 By making the torque value sufficiently small, the cover portion 110 can be opened with a manual torque corresponding to the weight of the cover portion 110.

電子機器１００のカバー部１１０を閉める動作によってＢ方向（図１参照）へ回転させると、図７に示すように、ブラケット１３、ヒンジ軸２０及び筒体４１は、カバー部１１０とともにＢ方向へ回転する。尚、図１及び図７に示すＢ方向は、ヒンジ軸２０まわりの同じ回転方向を表している。上述のように伝達部４０の環体４２は、押圧部材４４から軸線まわりのトルクを受けており、突起部４２ａは筒体４１の切欠部４１ａ内を深さの浅い一端部側へ見かけ上移動する。突起部４２ａは、切欠部４１ａの傾斜する奥側端部と軸体５１の端面５１ｂとに挟まれて噛み込み、突起部４２ａと端面５１ｂとの間で生じる摩擦力が急速に増大し、環体４２と軸体５１とがロック状態となる。 When the cover part 110 of the electronic device 100 is closed and rotated in the B direction (see FIG. 1), the bracket 13, the hinge shaft 20, and the cylinder 41 rotate together with the cover part 110 in the B direction as shown in FIG. To do. The B direction shown in FIGS. 1 and 7 represents the same rotational direction around the hinge shaft 20. As described above, the ring body 42 of the transmission portion 40 receives torque around the axis from the pressing member 44, and the protrusion 42 a apparently moves in the notch portion 41 a of the cylindrical body 41 toward one end portion having a shallow depth. To do. The protrusion 42a is caught between the inclined rear end of the notch 41a and the end surface 51b of the shaft body 51, and the frictional force generated between the protrusion 42a and the end surface 51b increases rapidly. The body 42 and the shaft body 51 are locked.

環体４２と軸体５１とがロック状態になると、トルク発生部５０の可動部分、即ち軸体５１及び摩擦用ワッシャ５３等がＢ方向へ回転し、静止板５２と摩擦用ワッシャ５３との間で抵抗トルクＲが発生する。抵抗トルクＲは、カバー部１１０の自重で生じるトルクよりも大きい値に設定しておくことによって、カバー部１１０の自重落下を防止することができる。皿ばね５４の構成及びナット５６の締め込み量によってトルク発生部５０内に生じる予圧を調整し、抵抗トルクＲを設定する。 When the ring body 42 and the shaft body 51 are locked, the movable part of the torque generating unit 50, that is, the shaft body 51, the friction washer 53, and the like rotate in the B direction, and between the stationary plate 52 and the friction washer 53. A resistance torque R is generated. By setting the resistance torque R to a value larger than the torque generated by the weight of the cover part 110, it is possible to prevent the cover part 110 from falling by its own weight. The preload generated in the torque generator 50 is adjusted by the configuration of the disc spring 54 and the tightening amount of the nut 56, and the resistance torque R is set.

以上のとおり、本実施形態によれば、ヒンジ軸２０がベース部１０の軸支持部１１ｂによって回転可能に支持されている。トルク発生部５０は、ヒンジ軸２０の軸線まわりの抵抗トルクＲを発生する。伝達部４０は、ヒンジ軸２０がＡ方向へ回転する場合に抵抗トルクＲを遮断し、Ｂ方向へ回転する場合にヒンジ軸２０に伝達する。伝達部４０は、ヒンジ軸２０とともに回転する筒体４１を有し、筒体４１の端部には切欠部４１ａが設けられている。伝達部４０は、ヒンジ軸２０に挿入された環体４２を有し、環体４２には、切欠部４１ａの奥側端部に接触する突起部４２ａが設けられている。トルク発生部５０は、ヒンジ軸２０に回転可能に支持された軸体５１を有し、軸体５１の一端部に鍔部５１ａを有し、端面５１ｂが切欠部４１ａに対向し、端面５１ｂで環体４２の突起部４２ａの周側部に接触する。トルク発生部５０は、軸体５１の回転に伴って摩擦を生じ、抵抗トルクＲを発生する摩擦用ワッシャ５３及び静止板５２を有する。 As described above, according to the present embodiment, the hinge shaft 20 is rotatably supported by the shaft support portion 11 b of the base portion 10. The torque generator 50 generates a resistance torque R around the axis of the hinge shaft 20. The transmission unit 40 interrupts the resistance torque R when the hinge shaft 20 rotates in the A direction, and transmits the resistance torque R to the hinge shaft 20 when the hinge shaft 20 rotates in the B direction. The transmission unit 40 includes a cylinder 41 that rotates together with the hinge shaft 20, and a cutout 41 a is provided at an end of the cylinder 41. The transmission unit 40 includes a ring body 42 inserted into the hinge shaft 20, and the ring body 42 is provided with a protrusion 42 a that contacts the back end of the notch 41 a. The torque generating unit 50 includes a shaft body 51 that is rotatably supported by the hinge shaft 20, has a flange portion 51a at one end portion of the shaft body 51, an end surface 51b faces the cutout portion 41a, and an end surface 51b It contacts the peripheral side of the protrusion 42a of the ring body 42. The torque generator 50 includes a friction washer 53 and a stationary plate 52 that generate friction and generate resistance torque R as the shaft body 51 rotates.

切欠部４１ａは、奥側端部が周方向に対して傾斜しているので、くさび状に形成されている。環体４２に設けた突起部４２ａが切欠部４１ａの切欠きが深い端部へ相対的に移動するＡ方向に、筒体４１がヒンジ軸２０とともに回転すると、ヒンジ軸２０への抵抗トルクの伝達は遮断される。環体４２に設けた突起部４２ａが切欠部４１ａの切欠きが浅い端部へ相対的に移動するＢ方向に、筒体４１がヒンジ軸２０とともに回転すると、突起部４２ａが切欠部４１ａの奥側端部と軸体５１の端面５１ｂに噛み込んで、軸体５１がヒンジ軸２０とともに回転し、ヒンジ軸２０へ抵抗トルクが伝達される。伝達部５０における切欠部４１ａ、環体４２の突起部４２ａ、及び切欠部４１ａに対向する軸体５１の端面５１ｂがヒンジ軸２０の軸線方向に配置されており、ヒンジ装置１は、ヒンジ軸２０の径方向の寸法を小さくすることができる。 The notch 41a is formed in a wedge shape because the end on the back side is inclined with respect to the circumferential direction. When the cylindrical body 41 rotates together with the hinge shaft 20 in the direction A in which the protrusion 42a provided on the ring body 42 moves relatively to the end portion where the notch 41a is deep, the resistance torque is transmitted to the hinge shaft 20. Is cut off. When the cylindrical body 41 rotates together with the hinge shaft 20 in the B direction in which the protrusion 42a provided on the ring body 42 moves relatively to the end where the cutout of the cutout 41a is shallow, the protrusion 42a is located behind the cutout 41a. The shaft body 51 rotates with the hinge shaft 20 by being engaged with the side end portion and the end surface 51 b of the shaft body 51, and resistance torque is transmitted to the hinge shaft 20. The notch 41a in the transmission part 50, the projecting part 42a of the annular body 42, and the end face 51b of the shaft body 51 facing the notch 41a are arranged in the axial direction of the hinge shaft 20, and the hinge device 1 is the hinge shaft 20 The dimension in the radial direction can be reduced.

また本実施形態によれば、伝達部４０は圧縮コイルばね４３及び押圧部材４４を有する。押圧部材４４は、筒体４１の切欠部４１ａにおける奥側端部の傾斜により切欠部４１ａの切欠きが浅い端部側へ環体４２の突起部４２ａを押圧するので、ヒンジ軸２０の回転時のガタを抑えることができる。 According to the present embodiment, the transmission unit 40 includes the compression coil spring 43 and the pressing member 44. The pressing member 44 presses the projection 42a of the ring body 42 toward the end portion where the cutout of the cutout portion 41a is shallow due to the inclination of the rear end portion of the cutout portion 41a of the cylindrical body 41. Therefore, when the hinge shaft 20 rotates. Can be suppressed.

また本実施形態によれば、環体４２が軸方向に突出する凸部４２ｂを有する。押圧部材４４は、底部４４ａの外縁部に切欠部４４ｂが形成されている。切欠部４４ｂは、環体４２に設けた凸部４２ｂに接触し、軸方向に対して傾斜した当接面を有する。押圧部材４４の切欠部４４ｂに設けた当接面が凸部４２ｂを周方向に押圧し、環体４２に設けた突起部４２ａは、筒体４１に設けた切欠部４１ａの切欠きが浅い端部側へ押圧される。 Moreover, according to this embodiment, the annular body 42 has the convex part 42b which protrudes in an axial direction. The pressing member 44 has a notch 44b formed on the outer edge of the bottom 44a. The notch 44b is in contact with the convex portion 42b provided on the ring body 42 and has a contact surface inclined with respect to the axial direction. The contact surface provided in the notch 44b of the pressing member 44 presses the convex part 42b in the circumferential direction, and the protrusion 42a provided in the annular body 42 has an end where the notch 41a provided in the cylindrical body 41 is shallow. It is pressed to the part side.

また本実施形態によれば、環体４２に設けた突起部４２ａが円柱状をなし、軸体５１の端面５１ｂは、突起部４２ａの周側面に接触するので、突起部４２ｂが切欠部４１ａの奥側端部と軸体５１の端面５１ｂに噛み込む際に発生する応力を突起部４２ｂに作用させることができる。 Further, according to the present embodiment, the protrusion 42a provided on the ring body 42 has a cylindrical shape, and the end surface 51b of the shaft body 51 is in contact with the peripheral side surface of the protrusion 42a. Therefore, the protrusion 42b is formed on the notch 41a. The stress generated when the rear end and the end surface 51b of the shaft body 51 are bitten can be applied to the protrusion 42b.

また本実施形態によれば、トルク発生部５０は、摩擦用ワッシャ５３及び静止板５２を有する。静止板５２はベース部１０に固定された支持部材１２によって軸線まわりの回転が拘束されており、摩擦用ワッシャ５３は軸体５１とともに回転し、静止板５２との間で摩擦を生じるので、摩擦による抵抗トルクＲを発生させることができる。 Further, according to the present embodiment, the torque generator 50 includes the friction washer 53 and the stationary plate 52. The stationary plate 52 is constrained from rotating about the axis by the support member 12 fixed to the base portion 10, and the friction washer 53 rotates together with the shaft body 51 to generate friction with the stationary plate 52. The resistance torque R can be generated.

（実施の形態２）
実施の形態１では、環体４２に円柱状の突起部４２ａを設け、突起部４２ａの側面が、切欠部４１ａの奥側端部及びトルク発生部５０の端面５１ｂに当接する構成とした。実施の形態２では、環体４２の環状部分の端面４２ｃがトルク発生部５０の端面５１ｂに当接する構成とする。図８は実施の形態２に係るヒンジ装置１の環体４２の外観を示す斜視図である。尚、実施の形態２における環体４２以外のヒンジ装置１の構成及び動作は、実施の形態１におけるヒンジ装置１の構成及び動作と同等であり、記載の簡潔化のため、説明を省略する。 (Embodiment 2)
In the first embodiment, the ring-shaped body 42 is provided with the columnar protrusion 42 a, and the side surface of the protrusion 42 a is in contact with the back end of the notch 41 a and the end surface 51 b of the torque generator 50. In the second embodiment, the end surface 42c of the annular portion of the ring body 42 is configured to abut on the end surface 51b of the torque generating unit 50. FIG. 8 is a perspective view showing an appearance of the ring body 42 of the hinge device 1 according to the second embodiment. The configuration and operation of the hinge device 1 other than the ring body 42 in the second embodiment are the same as the configuration and operation of the hinge device 1 in the first embodiment, and a description thereof will be omitted for the sake of brevity.

環体４２は、外周面の対向位置に円柱状の突起部４２ａを有し、ヒンジ軸２０の軸体２３に挿入される。環体４２の突起部４２ａは、筒体４１の切欠部４１ａに嵌まり、突起部４２ａの側面が、切欠部４１ａの奥側端部に接触する。環体４２のトルク発生部５０側の端面４２ｃは、突起部４２ａの周側部よりも軸方向に突出しており、トルク発生部５０の軸体５１の端面５１ｂに当接する。 The ring body 42 has a cylindrical protrusion 42 a at a position facing the outer peripheral surface, and is inserted into the shaft body 23 of the hinge shaft 20. The projecting portion 42a of the ring body 42 is fitted into the cutout portion 41a of the cylindrical body 41, and the side surface of the projecting portion 42a is in contact with the back end portion of the cutout portion 41a. The end face 42c of the ring body 42 on the torque generating portion 50 side protrudes in the axial direction from the peripheral side portion of the protrusion 42a, and abuts on the end face 51b of the shaft body 51 of the torque generating portion 50.

カバー部１１０をＡ方向（図１参照）に回転する際、環体４２の端面４２ｃと軸体５１の端面５１ｂとの間に働く摩擦トルクＦ１によって環体４２の回転方向の位置が維持され、突起部４２ａは、筒体４１の切欠部４１ａ内を深さの深い他端部側へ見かけ上移動する。突起部４２ａが切欠部４１ａの他端部に当接すると、カバー部１１０のＡ方向への回転に応じて、筒体４１とともに環体４２もＡ方向へ回転する。カバー部１１０の回転には、カバー部１１０の自重に加え、摩擦トルクＦ１、さらにはブラケット１１の軸支持部１１ｂとヒンジ軸２０との間に生じる摩擦トルクＦ２が働くが、摩擦トルクＦ１及びＦ２を十分に小さいトルク値とすることで、カバー部１１０の重量に応じた手動トルクで、カバー部１１０を開くことができる。 When the cover part 110 is rotated in the A direction (see FIG. 1), the position of the annular body 42 in the rotational direction is maintained by the friction torque F1 acting between the end face 42c of the annular body 42 and the end face 51b of the shaft body 51, The protrusion 42a apparently moves in the notch 41a of the cylindrical body 41 toward the other end having a deep depth. When the projecting portion 42a comes into contact with the other end portion of the cutout portion 41a, the ring body 42 is also rotated in the A direction together with the cylindrical body 41 in accordance with the rotation of the cover portion 110 in the A direction. In addition to the weight of the cover part 110, the rotation of the cover part 110 is caused by the friction torque F1 and the friction torque F2 generated between the shaft support part 11b of the bracket 11 and the hinge shaft 20, but the friction torques F1 and F2 By making the torque value sufficiently small, the cover portion 110 can be opened with a manual torque corresponding to the weight of the cover portion 110.

カバー部１１０を閉める動作によってＢ方向（図１参照）へ回転させると、押圧部材４４からの押圧力によって、突起部４２ａは筒体４１の切欠部４１ａ内を深さの浅い一端部側へ見かけ上移動する。環体４２は、突起部４２ａが切欠部４１ａの傾斜する奥側端部に当接し、端面４２ｃが軸体５１の端面５１ｂに当接し、筒体４１と軸体５１とに挟まれて噛み込む。環体４２が筒体４１と軸体５１に噛み込むと、端面４２ｃと端面５１ｂとの間で生じる摩擦力が急速に増大し、環体４２と軸体５１とがロック状態となる。 When the cover portion 110 is rotated in the direction B (see FIG. 1) by the operation of closing the cover portion 110, the protruding portion 42a appears inside the cutout portion 41a of the cylindrical body 41 toward the one end portion having a shallow depth by the pressing force from the pressing member 44. Move up. In the ring body 42, the projecting portion 42 a comes into contact with the inclined rear end portion of the notch portion 41 a, the end surface 42 c comes into contact with the end surface 51 b of the shaft body 51, and is sandwiched between the cylindrical body 41 and the shaft body 51 and bites. . When the ring body 42 is engaged with the cylinder body 41 and the shaft body 51, the frictional force generated between the end surface 42c and the end surface 51b is rapidly increased, and the ring body 42 and the shaft body 51 are locked.

環体４２と軸体５１とがロック状態になると、トルク発生部５０の可動部分、即ち軸体５１及び摩擦用ワッシャ５３等がＢ方向へ回転し、静止板５２と摩擦用ワッシャ５３との間で抵抗トルクＲが発生する。抵抗トルクＲは、カバー部１１０の自重で生じるトルクよりも大きい値に設定しておくによって、カバー部１１０の自重落下を防止することができる。 When the ring body 42 and the shaft body 51 are locked, the movable part of the torque generating unit 50, that is, the shaft body 51, the friction washer 53, and the like rotate in the B direction, and between the stationary plate 52 and the friction washer 53. A resistance torque R is generated. By setting the resistance torque R to a value larger than the torque generated by the weight of the cover part 110, it is possible to prevent the cover part 110 from dropping its own weight.

（実施の形態３）
実施の形態１及び２では、伝達部４０の押圧部材４４を圧縮コイルばね４３によって押圧する構成としたが、実施の形態３では、ねじりコイルばねによって押圧する構成とする。図９は実施の形態３に係るヒンジ装置１の伝達部４０の正面図である。図９では、筒体４１及び押圧部材４４の一部を破断して伝達部４０を示す。尚、実施の形態３における押圧部材４４及びねじりコイルばね４５以外のヒンジ装置１の構成及び動作は、実施の形態１及び２におけるヒンジ装置１の構成及び動作と同等であり、記載の簡潔化のため、説明を省略する。 (Embodiment 3)
In the first and second embodiments, the pressing member 44 of the transmission unit 40 is pressed by the compression coil spring 43. However, in the third embodiment, the pressing member 44 is pressed by the torsion coil spring. FIG. 9 is a front view of the transmission unit 40 of the hinge device 1 according to the third embodiment. In FIG. 9, a part of the cylindrical body 41 and the pressing member 44 is broken to show the transmission unit 40. The configuration and operation of the hinge device 1 other than the pressing member 44 and the torsion coil spring 45 in the third embodiment are the same as the configuration and operation of the hinge device 1 in the first and second embodiments, and the description is simplified. Therefore, the description is omitted.

ねじりコイルばね４５は、ヒンジ軸２０の大径部２１と押圧部材４４との間に配置されており、一方の端部が突起部４４ｃに、他方の端部が大径部２１又は筒体４１に掛けられている。押圧部材４４は、ねじりコイルばね４５の復元力によってトルクを受け、切欠部４４ｂに設けた当接面で環体４２の凸部４２ｂを押圧する。環体４２は、押圧部材４４からの押圧力により軸線まわりのトルクを受けるとともに軸方向に押圧され、接触する突起部４２ａの周側部と軸体５１の端面５１ｂとの間で摩擦が生じ、摩擦トルクＦ１が働く。 The torsion coil spring 45 is disposed between the large-diameter portion 21 of the hinge shaft 20 and the pressing member 44, and one end portion is the protrusion 44 c and the other end portion is the large-diameter portion 21 or the cylindrical body 41. It is hung on. The pressing member 44 receives torque by the restoring force of the torsion coil spring 45, and presses the convex portion 42b of the annular body 42 with the contact surface provided in the notch 44b. The ring body 42 receives torque around the axis by the pressing force from the pressing member 44 and is pressed in the axial direction, and friction is generated between the peripheral side portion of the projecting portion 42a and the end surface 51b of the shaft body 51, The friction torque F1 works.

カバー部１１０をＡ方向（図１参照）に回転する際、環体４２は摩擦トルクＦ１によって回転方向の位置を維持し、突起部４２ａは、筒体４１の切欠部４１ａ内を深さの深い他端部側へ見かけ上移動する。突起部４２ａが切欠部４１ａの他端部に当接すると、カバー部１１０のＡ方向への回転に応じて、筒体４１とともに環体４２もＡ方向へ回転する。カバー部１１０の回転には、カバー部１１０の自重に加え、摩擦トルクＦ１、さらにはブラケット１１の軸支持部１１ｂとヒンジ軸２０との間に生じる摩擦トルクＦ２が働くが、摩擦トルクＦ１及びＦ２を十分に小さいトルク値とすることで、カバー部１１０の重量に応じた手動トルクで、カバー部１１０を開くことができる。 When the cover 110 is rotated in the A direction (see FIG. 1), the ring body 42 maintains the position in the rotation direction by the friction torque F1, and the protrusion 42a has a deep depth in the notch 41a of the cylinder 41. Apparently moves to the other end side. When the projecting portion 42a comes into contact with the other end portion of the cutout portion 41a, the ring body 42 is also rotated in the A direction together with the cylindrical body 41 according to the rotation of the cover portion 110 in the A direction. In addition to the weight of the cover part 110, the rotation of the cover part 110 is caused by the friction torque F1 and the friction torque F2 generated between the shaft support part 11b of the bracket 11 and the hinge shaft 20, but the friction torques F1 and F2 By making the torque value sufficiently small, the cover portion 110 can be opened with a manual torque corresponding to the weight of the cover portion 110.

カバー部１１０を閉める動作によってＢ方向（図１参照）へ回転させると、押圧部材４４からの押圧力によって、突起部４２ａは筒体４１の切欠部４１ａ内を深さの浅い一端部側へ見かけ上移動する。突起部４２ａは、切欠部４１ａの傾斜する奥側端部と軸体５１の端面５１ｂとに挟まれて噛み込み、突起部４２ａと端面５１ｂとの間で生じる摩擦力が急速に増大し、環体４２と軸体５１とがロック状態となる。 When the cover portion 110 is rotated in the direction B (see FIG. 1) by the operation of closing the cover portion 110, the protruding portion 42a appears inside the cutout portion 41a of the cylindrical body 41 toward the one end portion having a shallow depth by the pressing force from the pressing member 44. Move up. The protrusion 42a is caught between the inclined rear end of the notch 41a and the end surface 51b of the shaft body 51, and the frictional force generated between the protrusion 42a and the end surface 51b increases rapidly. The body 42 and the shaft body 51 are locked.

尚、押圧部材４４を設けずに、ねじりコイルばね４５の一方の端部を環体４２の凸部４２ｂに掛けるようにしてもよく、この場合、部品点数を削減することができるとともに、伝達部４０の軸方向の寸法を小さくすることができる。 It should be noted that one end portion of the torsion coil spring 45 may be hung on the convex portion 42b of the annular body 42 without providing the pressing member 44. In this case, the number of parts can be reduced and the transmission portion Forty axial dimensions can be reduced.

（実施の形態４）
実施の形態１から３では、軸体５１の端面５１ｂは、平坦面、又は粗面加工を施した面とする例を示したが、実施の形態４では、端面５１ｂに放射状の凹凸を設ける。図１０は実施の形態４に係るヒンジ装置１の軸体５１の外観を示す斜視図である。尚、実施の形態４における軸体５１以外のヒンジ装置１の構成及び動作は、実施の形態１から３におけるヒンジ装置１の構成及び動作と同等であり、記載の簡潔化のため、説明を省略する。 (Embodiment 4)
In the first to third embodiments, the end surface 51b of the shaft body 51 is an example of a flat surface or a roughened surface. However, in the fourth embodiment, radial unevenness is provided on the end surface 51b. FIG. 10 is a perspective view showing an appearance of the shaft body 51 of the hinge device 1 according to the fourth embodiment. The configuration and operation of the hinge device 1 other than the shaft body 51 in the fourth embodiment are the same as the configuration and operation of the hinge device 1 in the first to third embodiments, and the description is omitted for the sake of brevity. To do.

軸体５１の端面５１ｂには、中心部から外周部に向けて放射状の凹凸が形成されている。また、半径方向の中途部から外周部に向けて、凸部分を切除した三角形状の面を設けることで、凹凸の深さが浅くなるようにしている。 On the end surface 51b of the shaft body 51, radial irregularities are formed from the center portion toward the outer peripheral portion. Further, by providing a triangular surface with the convex portion cut away from the midway portion in the radial direction toward the outer peripheral portion, the depth of the unevenness is made shallower.

環体４２は、筒体４１をＢ方向（図１及び図７参照）方向に回転する際に、筒体４１の切欠部４１ａと軸体５１の端面５１ｂに噛み込む。軸体５１の端面５１ｂに放射状の凹凸を設けることで、突起部４２ａ、又は環状部分の端面４２ｃが端面５１ｂに噛み込み易くなる。 The ring body 42 is engaged with the notch 41 a of the cylinder body 41 and the end surface 51 b of the shaft body 51 when the cylinder body 41 is rotated in the B direction (see FIGS. 1 and 7). Providing radial irregularities on the end surface 51b of the shaft body 51 makes it easier for the protrusion 42a or the end surface 42c of the annular portion to bite into the end surface 51b.

（変形例）
上述の実施形態では、押圧部材４４に切欠部４４ｂを設け、環体４２に凸部４２ｂを設けているが、押圧部材４４に凸部を設け、環体４２に切欠部を設けるようにしてもよい。 (Modification)
In the above-described embodiment, the pressing member 44 is provided with the notch portion 44b and the annular body 42 is provided with the convex portion 42b. However, the pressing member 44 may be provided with the convex portion and the annular body 42 may be provided with the notched portion. Good.

また、上述の実施形態では、トルク発生部５０は、皿ばね５４が発生する予圧によって摩擦用ワッシャ５３と静止板５２との間で摩擦が生じ、抵抗トルクＲが発生する構成としているが、静止板５２に固定した制動筒体に軸体５１を圧入し、該制動筒体の内周面と軸体５１の外周面との間の摩擦によって一定の抵抗トルクが発生する構成等としてもよい。 In the above-described embodiment, the torque generating unit 50 is configured to generate the resistance torque R by generating friction between the friction washer 53 and the stationary plate 52 by the preload generated by the disc spring 54. The shaft body 51 may be press-fitted into the brake cylinder fixed to the plate 52, and a certain resistance torque may be generated by friction between the inner peripheral surface of the brake cylinder and the outer peripheral surface of the shaft body 51.

また、上述の実施形態では、ヒンジ装置１はブラケット１３を用いてカバー部１１０に取り付けられているが、ヒンジ軸２０の軸体２２の端部をカバー部１１０側に設けた取付孔に挿入するようにして組み立てる構成としてもよい。カバー部１１０側の取付孔の内周面に平坦面を設け、軸体２２に設けた平坦面と接触させことによって、カバー部１１０とヒンジ軸２０とを一体的に回転させることができる。 In the above-described embodiment, the hinge device 1 is attached to the cover portion 110 using the bracket 13, but the end portion of the shaft body 22 of the hinge shaft 20 is inserted into an attachment hole provided on the cover portion 110 side. It is good also as a structure assembled in this way. By providing a flat surface on the inner peripheral surface of the mounting hole on the cover portion 110 side and bringing it into contact with the flat surface provided on the shaft body 22, the cover portion 110 and the hinge shaft 20 can be rotated integrally.

尚、本発明は、上述の実施形態に限ることなく、特許請求の範囲に記載された発明の技術範囲及びそれと均等な範囲に及ぶものとする。 The present invention is not limited to the above-described embodiment, but covers the technical scope of the invention described in the claims and the equivalent scope thereof.

１ヒンジ装置
１０ベース部
２０ヒンジ軸
４０伝達部
４１筒体
４１ａ切欠部
４２環体
４２ａ突起部
４２ｂ凸部
４３圧縮コイルばね（押圧手段）
４４押圧部材（押圧手段）
４５ねじりコイルばね（押圧手段）
５０トルク発生部
５１軸体
５２静止板（摩擦部）
５３摩擦用ワッシャ（摩擦部、摩擦板） DESCRIPTION OF SYMBOLS 1 Hinge apparatus 10 Base part 20 Hinge shaft 40 Transmission part 41 Cylindrical body 41a Notch part 42 Ring body 42a Projection part 42b Protrusion part 43 Compression coil spring (pressing means)
44 Pressing member (pressing means)
45 Torsion coil spring (pressing means)
50 Torque generating part 51 Shaft body 52 Static plate (friction part)
53 Friction washers (friction part, friction plate)

Claims

A base portion that rotatably supports the hinge shaft;
A torque generating section for generating a resistance torque around the axis of the hinge shaft;
In the hinge device comprising: a transmission portion that interrupts the resistance torque when the hinge shaft rotates to one side and transmits to the hinge shaft when rotating to the other side;
The transmission portion rotates together with the hinge shaft, and has a cylindrical body provided with a notch portion at an end portion thereof, and a ring provided with a projection portion that is inserted into the hinge shaft and is in contact with the rear end portion of the notch portion. Have a body,
The torque generating portion is rotatably supported by the hinge shaft, one end of the torque generating portion is opposed to the notch, and the one end contacts the ring body, and the shaft is rotated. A friction part that generates friction and generates the resistance torque;
The rear side end of the notch is inclined with respect to the circumferential direction ,
When the ring is rotated to the one side, the protrusion moves to a deeper side of the notch, and slides against the one end to cut off the resistance torque, and when rotated to the other side, The hinge device is characterized in that the projection moves to a shallow side of the notch and is engaged between the one end and the back end to be locked and transmit the resistance torque .

2. The hinge according to claim 1, wherein the transmission unit includes a pressing unit that presses the protruding portion toward the end portion where the notch of the notch portion is shallow due to the inclination of the rear end portion of the notch portion. apparatus.

The ring body has a convex portion protruding in the axial direction;
The said pressing means has a pressing member which contacted the said convex part, and provided the contact surface inclined with respect to the said axial direction, and the compression coil spring which presses this pressing member, It is characterized by the above-mentioned. The hinge apparatus as described.

The hinge device according to any one of claims 1 to 3, wherein the protruding portion has a cylindrical shape, and one end portion of the shaft body is in contact with a peripheral side surface of the protruding portion.

The friction portion includes a stationary plate whose rotation about the axis is constrained by the base portion, and a friction plate that rotates with the shaft body and generates friction with the stationary plate. The hinge apparatus as described in any one of Claims 1-4.

The hinge device according to any one of claims 1 to 5, wherein radial concavities and convexities are provided at one end of the shaft body.